JP2601588Y2 - Liquid injector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid dispenser such as a hand disinfecter for disinfecting a disinfectant stored in a disinfectant storage tank by ejecting the disinfectant from an injection nozzle to a finger.

[0002] Here, the term "disinfectant" is a concept including, in addition to alcohol, soapy water comprising a surfactant or the like.

[0003]

2. Description of the Related Art Conventionally, in a medical facility such as a hospital or a food processing site, as a means for disinfecting a finger before work, a finger in which a disinfectant is automatically sprayed on the finger simply by inserting the finger into the apparatus. Disinfectors are heavily used. In recent years, a hand disinfection device has attracted attention as a means for effectively preventing nosocomial infections in hospitals.

[0004] One form of such a hand sterilizer is disclosed in Japanese Patent Application Laid-Open No. Hei 3-15472.

The hand disinfecting apparatus includes a disinfecting solution storage tank for storing a disinfecting solution, an injection nozzle, an ejection path connecting the injection nozzle and the disinfecting solution storage tank, and having a pressure pump installed halfway. The fingers and the like are disinfected by the disinfecting solution ejected from the ejection nozzle.

[0006] Such a hand disinfection device usually includes a hand detection sensor near the injection nozzle. The hand detection sensor detects a hand that is provided for disinfection, and based on the detected output, The injection nozzle is driven via the control unit, so that the fingers can be automatically washed.

[0007]

However, the conventional liquid ejector including the above-mentioned hand disinfecting device still has the following problems to be solved.

[0008] That is, in the disinfecting solution storage tank in such a hand disinfecting device, an opening / closing lid is placed on an upper opening thereof in order to prevent evaporation of the liquid in the tank as much as possible.

However, since the opening / closing lid is merely placed on the tank, if the lid is frequently opened due to mischief or the like even though the liquid exchange time has not yet reached, various germs and the like may remain in the tank. There is a risk of contamination. Also,
When the disinfectant storage tank is pulled out, the disinfectant may overflow from the overflowing tank.

An object of the present invention is to provide a liquid ejector which can solve the above-mentioned problems.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to a liquid ejector having a structure in which a liquid can be ejected from a liquid storage tank having an opening / closing lid to an ejection nozzle through a pressure pump to eject the liquid. And a liquid level detection sensor for detecting the liquid level in the liquid storage tank, and when the liquid detection sensor detects that the liquid exchange required liquid level has been reached, the opening / closing lid lock device can be released. It relates to a characteristic liquid ejector.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the accompanying drawings.

(Configuration) First, the configuration of the liquid ejector according to the present invention will be specifically described with reference to FIGS. In this embodiment, the liquid ejector is a hand disinfection device A.

FIG. 1 shows a hand disinfecting device A,
It shows a state where it is attached to a position above and above the basin 12.

FIGS. 2 to 6 show the configuration of the hand disinfecting device A in detail. First, the basic configuration of the hand disinfecting device A will be described.

As shown in FIG. 3, a vertically rectangular casing 13 forming the outer shell of the hand disinfecting device A is detachably attached to the wall surface 11 by attaching means 20 described later.

As shown in FIGS. 2 to 4, the casing 13 has front and rear walls 13a and 13b, left and right side walls 13c and 13d, and a bottom wall 13e, each of which has a rectangular plate shape. And lid 13f.

As is apparent from FIGS. 3 and 4, a disinfecting solution storage tank 14 in the form of a rectangular box having an upper end opening is disposed in the upper space of the casing 13. A rectangular box-shaped disinfectant liquid cartridge 15 is exchangeably housed.

As shown in FIGS. 2 and 3, a liquid level detector 16 for detecting the current remaining amount of the disinfecting solution in the tank 14 is mounted at one corner of the lower portion of the disinfecting solution storage tank 14. Have been.

On the other hand, as shown in FIGS. 2 to 4, in the lower space of the casing 13, the disinfecting solution pumped from the disinfecting solution storage tank 14 is directed to the fingers protruded into the bowl of the basin 12. Disinfectant injection unit 17 that can be ejected
Disinfectant liquid supply pipe 19 from disinfectant storage tank 15
And a pressure pump 18 for pumping through the pump.

The pressure pump 18 is located above the disinfecting solution jetting unit 17.

With the above-described structure, the disinfecting solution in the disinfecting solution storage tank 14 can be pressure-fed to the disinfecting solution jetting unit 17 through the disinfecting solution feed pipe 19 by the operation of the pressure feeding pump 18, and thereafter, the disinfecting solution jetting unit 17 It can be spouted to the fingers more effectively for disinfection.

Further, in the present embodiment, the disinfecting solution storage tank 14, the pressure pump 18 and the disinfecting solution jetting unit 17 are disposed in this order from the upper portion to the lower portion in the casing 13.
The disinfecting solution supply pipe 19 can be made almost unnecessary, and the flow path resistance can be reduced, and the casing 13, that is, the hand disinfecting device A can be made compact.

Further, even if the remaining amount of the disinfecting solution in the disinfecting solution storage tank 14 decreases, the stability under the installed condition is improved because the lower portion of the casing 13 is heavy.

Next, each component of the hand disinfecting device A having the above-described basic configuration will be described in detail.

(Disinfectant Storage Tank 14 and Disinfectant Cartridge 15) As shown in FIG. 3, the disinfectant storage tank 14 has a bottom plate 14.
At the center of a, a cross-shaped cartridge support in plan view
The cap 23 of the antiseptic solution cartridge 15 in a reverse state, which has an on-off valve 22, is mounted on the cartridge support 21.

In this mounted state, the on-off valve 22 in the cap 23 is opened by a projection 24 provided at the center of the cartridge support 21. Accordingly, the disinfecting solution flows from the disinfecting solution cartridge 15 into the disinfecting solution storage tank 14 through the on-off valve 22. Disinfectant storage tank
The liquid level of the disinfecting liquid after flowing into 14 is kept at the normal liquid level NL by the atmospheric pressure.

Then, the normal liquid level NL starts to decrease after the disinfecting solution in the disinfecting solution cartridge 14 runs out.

A disinfectant outflow hole 25 is provided in the peripheral portion of the bottom plate 14 of the disinfectant storage tank 14.
Is connected in communication with an impeller chamber 26 of the pressure pump 18 described later.

(Liquid Level Detecting Unit 16) The liquid level detecting unit 16 is disposed in a space in which a lower corner of the disinfecting solution storage tank 14 is recessed inward as shown in FIGS. ing.

That is, as can be best understood from FIG. 4, the lower side wall 14b of the disinfecting solution storage tank 14 is provided with upper and lower liquid communication holes 27, 28 at intervals in the vertical direction. , 28 are connected to both ends of a transparent communication pipe 29 having a U-shape in side view.

As shown in FIGS. 4 and 6, a liquid level detection sensor 30 having a U-shape in plan view is provided with a disinfectant storage tank.
The light-emitting element 32 and the light-receiving element 33 buried at both ends of the liquid level detection sensor 30 are attached to the lower side wall 14b of the 14 via a mounting bracket 31, and face each other with the transparent communication pipe 29 interposed therebetween. I have.

Further, the portion of the transparent communication tube 29 sandwiched between the two elements 32 and 33 has a diamond-shaped cross section as shown in FIG.

Therefore, when the liquid level in the disinfecting solution storage tank 14 is at the normal liquid level NL in a normal use state, the disinfecting solution is also filled into the transparent communication pipe 29 at the same liquid level. become.

In this case, the light from the light emitting element 32 passes through the inside of the transparent communication pipe 29 and is emitted to the outside as shown by a dotted line a due to the refractive index of water. And only an off output is output.

Thereafter, when the liquid level begins to drop and reaches the reference liquid level RL, which is a warning liquid level, the liquid level in the transparent communication hole 29 is positioned below the line connecting the light emitting element 32 and the light receiving element 33. Therefore, the light from the light emitting element 32 passes through the transparent communication pipe 29 as shown by the dotted line b and is received by the light receiving element 33 due to the refractive index of air, and an on output is generated. I do.

In this embodiment, the cross section of the transparent communication pipe 29 is a regular rhombus, but may be a circular cross section, a long rhombus or the like.

(Pumping Pump 18) As shown in FIG. 3, the pumping pump 18 includes an impeller casing 34 having an impeller chamber 26 therein, and an impeller rotatably disposed in the impeller casing 34. 35
And a rotary motor 36 formed integrally with the impeller casing 34 and having an impeller 35 fixed to the end of an output shaft 37 thereof.

The pressure pump 18 has an impeller chamber 26
The central opening is connected to the inside of the disinfectant storage tank 14 through the disinfectant outflow hole 25 described above.

On the other hand, as shown in FIGS. 3 and 4, a disinfectant outflow hole 38 provided on the outer peripheral edge of the impeller chamber 26 has a disinfectant supply pipe.
It is communicatively connected to the base end side of 19.

With this configuration, the impeller 35 is rotated by the driving of the rotation motor 36, and the rotation causes the disinfecting solution in the disinfecting solution storage tank 14 to be disinfected through the pressure pump 18 and the disinfecting solution feed pipe 19 to be described later. The liquid can be sent to the liquid ejecting unit 17 by pressure.

(Disinfectant Injection Unit 17) As shown in FIGS. 2 to 4 and 8, the same center is located at the front center of the bottom wall 13 a of the casing 13 which has a gradually increasing slope from the wall surface 11 toward the front. An injection unit mounting opening 40 having a rectangular shape having a slope is provided, and an injection unit casing 41 having a substantially rectangular box shape is disposed in the opening 40. Note that the axis of the injection unit casing 41 is substantially directed toward the center of the bowl of the basin 12 located therebelow.

Bearing brackets 42, 43 integral with the bottom wall 13a of the casing 13 are provided upright at the front and rear portions of the opening 40.
4,45 are formed.

Pivot shafts 46, 47 provided on the upper portions of the front and rear walls of the injection portion casing 41 are pivotally supported by the bearings 44, 45, respectively.

With this configuration, the injection unit casing 41
As shown in FIG. 2, the camera can be swung or swung at a fixed angle (for example, 15 °) in the left-right direction around the pivots 46 and 47.

Next, the internal structure of the injection unit casing 41 composed of the cylindrical main body 41a and the bottom plate 41b will be described.

As is apparent from FIG. 3, an injection nozzle 48 and a finger detection sensor 49 as a human body detection sensor are housed in the injection section casing 41 in a state of being juxtaposed in the same direction as the axis of the injection section casing 41. Have been. And the injection nozzle
The distal end of the bottom plate 41 projects downward through a through hole 50 provided in the bottom plate 41b, while the bottom plate 41 facing the finger detection sensor 49.
A transparent window 51 made of a transparent plastic or the like is formed in a portion b.

That is, in this embodiment, the ejection nozzle 48 and the finger detection sensor 49 as a human body detection sensor are integrally installed in the ejection section casing 41, and the ejection direction of the ejection nozzle 48 and the finger detection sensor 49 are provided. The emission direction of the injection part casing 41 is made coincident, and the emission direction of the injection nozzle 48 and the emission direction of the finger detection sensor 49 can be simultaneously changed by the swinging operation of the injection part casing 41.

Therefore, malfunctions caused by differences in the shape, material, and the like of the receiving side of the basin 12 and the like can be eliminated by a simple method of changing the light emitting direction of the finger detection sensor 49.

Further, since the light emitting direction of the finger detection sensor 49 and the injection direction of the injection nozzle 48 are always constant, there is no sense of incongruity during use, and the usability can be significantly improved.

As shown in FIG. 3, a check valve is provided at the upper end of the injection nozzle body 48 in the injection section casing 41.
52 are connected. On the other hand, the check valve 52 is connected to the distal end of the bendable disinfecting solution supply pipe 19 through a pipe joint 53 and an elbow 54 formed integrally with the check valve 52.

(Mounting Structure of Casing 13 on Wall 11) In this embodiment, as is apparent from FIGS. 3 and 6, a rectangular mounting plate 61 is mounted by bolts 60, and the mounting plate 61
By fitting the rear wall 13b of the casing 13 provided on the front surface of the hand, the hand disinfecting device A can be easily attached to the wall surface 11.

(Opening / closing structure of the opening / closing lid 13f) Further, in this embodiment, as shown in FIG.
An opening / closing lid 13f provided on the upper portion of the upper part 13 pivotally supports the rear end side of the rear end thereof by a pivot 70 such as a spring pin so as to be vertically rotatable. And an opening / closing lid lock device D that is activated by the on / off output of the vehicle.

The structure of the opening / closing lid lock device D will be described. As can be best understood from FIGS.
A fitting recess 90 is formed at the center of the front wall of the opening / closing lid 13f, and a fitting ridge 91 integrally connected to the center of the upper edge of the front wall 13a of the casing 13 is fitted into the recess. .

One end of the fitting ridge 91 is provided with an electromagnetic coil 92.
a and a plunger 92b, a lid locking solenoid 92
In the center of the front wall of the opening / closing lid 13f opposed to the end, a fitting hole 93 is provided for removably fitting the plunger 92b of the solenoid 92.

With this configuration, the plunger 92b of the lid locking solenoid 92 is at a position retracted by the tension spring 95 connected to the rear of the plunger 92b in a non-energized state where no electric current is supplied from the electric wire 94. It is in a state of being detached from the fitting hole 93.

On the other hand, when electricity is supplied by the conducting wire 94,
The plunger 92b advances into the insertion hole 93, and the opening / closing lid 13f can be locked.

The operation of the lid locking solenoid 92 is interlocked with the output signal of the liquid level detection sensor 30. Specifically, the liquid level detection sensor 30 operates until the reference liquid level RL is detected. Since the ON output is continuously sent to the lid locking solenoid 92, the plunger 92b continues to engage with the fitting hole 93,
The lid 13f is kept in a locked state.

On the other hand, when the liquid level detection sensor 30 detects the reference liquid level RL, an off output is made, and the lid locking solenoid is
The 92 plunger 92b is removed from the fitting hole 93, and the opening / closing lid 13f
Will be unlocked.

As described above, in this embodiment, the opening operation of the opening / closing lid 13b is reliably prevented until the liquid level detecting sensor 30 detects the reference liquid level RL, that is, until the time for replacing the disinfecting liquid comes. Can be opened and closed frequently due to mischief etc.
Various adverse effects caused by f, for example, accidents such as mixing of germs into the tank and overflow of the disinfecting solution out of the disinfecting solution storage tank 14 due to withdrawal of the disinfecting solution cartridge 15 can be reliably prevented.

(Display Structure of Casing 13) As shown in FIGS. 1 and 2, on the surface of the front wall 13a of the casing 13, a state display section 75 is provided. A lamp 76 and a supply indicating lamp 77 are provided.

The replenishment display lamp 77 blinks when the liquid level in the disinfectant storage tank 14 reaches the reference liquid level RL, as described later, to indicate that the time for replacement of the disinfectant cartridge 15 is imminent. Notify user.

Further, the drive time of the rotary motor 36 of the pressure pump 18 is replaced with a flow rate, and a volume from the reference liquid level RL to a level at which the pressure pump 18 does not run idle is set in advance. When the amount is reached, the supply indicator lamp 77 is turned on.

(Control Unit) A control unit C is provided inside the casing 13 of the hand sterilizer A according to the present invention, and the configuration is shown in FIG. 11 by a block diagram.

As shown in the figure, the control unit C comprises a microcomputer 80. The input side interface 81 of the microcomputer 80 is connected to the liquid level detection sensor 30 and the finger detection sensor 49. 82 includes a motor drive circuit 83 of the pump 18, a power indicator lamp 76, a supply indicator lamp 77, and a lid lock solenoid 92.
Etc. are connected.

(Operation) Next, a procedure for using the hand disinfecting device A having the above-described configuration will be described with reference to FIGS.

Now, when the hand is put out of the hand disinfecting device A shown in FIG. 1 and above the basin 12, the finger detecting sensor 49 is turned on, and the control unit C is controlled based on the sensor output. The pump 18 is driven through this, and the disinfecting liquid is ejected from the ejection nozzle 48 toward the finger, thereby disinfecting the finger.

Thus, the disinfecting solution in the disinfecting solution storage tank 14 decreases with each drive of the injection nozzle 48, and the liquid level of the disinfecting solution also gradually decreases. In the present invention, as described above,
Until the liquid level detection sensor 30 detects the reference liquid level RL, that is,
Until it is time to replace the disinfecting solution, the opening operation of the opening / closing lid 13b can be reliably prevented.

Therefore, the frequent opening / closing lid 13 due to mischief etc.
Various adverse effects caused by f, for example, accidents such as mixing of germs into the tank and overflow of the disinfecting solution out of the disinfecting solution storage tank 14 due to withdrawal of the disinfecting solution cartridge 15 can be reliably prevented.

[0070]

According to the present invention, there is provided a liquid ejector having a configuration in which a liquid can be pressure-fed from a liquid storage tank having a lid to be opened to a jet nozzle via a pressure pump to eject the liquid, an opening / closing lid locking device, a liquid storage A liquid level detection sensor for detecting the liquid level in the tank, and when the liquid detection sensor detects that the liquid exchange required liquid level has been reached, the opening / closing lid locking device can be released.

Accordingly, various adverse effects caused by frequent opening / closing lids due to mischief or the like, for example, accidents such as contamination of bacteria into the tank and overflow of the disinfectant out of the disinfectant storage tank due to withdrawal of the disinfectant cartridge. Can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hospital room equipped with a hand disinfectant which is an example of a liquid ejector according to the present invention.

FIG. 2 is a partially cutaway front view of the same finger disinfector.

FIG. 3 is a right sectional side view of the same finger disinfector.

FIG. 4 is a partially cutaway side view of the left side of the same finger disinfector.

FIG. 5 is a rear view of the same finger disinfector.

FIG. 6 is a cross-sectional plan view of the finger sterilizer.

FIG. 7 is a detailed view of a main part of a finger detection sensor of the finger sterilizer.

FIG. 8 is a bottom view of the same finger disinfector.

FIG. 9 is a perspective view of a main part of an opening / closing lid of the finger sterilizer.

FIG. 10 is a cross-sectional front view of an opening / closing lid lock device of the same finger sterilizer.

FIG. 11 is a block diagram illustrating a configuration of a control unit of the same-hand finger sterilizer.

[Explanation of symbols]

 A hand disinfection device C control unit D opening / closing lid lock device 18 pressure pump 30 liquid level detection sensor 48 injection nozzle 49 finger detection sensor

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Abeta 4680 Ikata, Ogata-machi, Fukuoka Prefecture Fukuoka Prefecture Inside Kyushu Hitachi Maxell Co., Ltd. (56) References JP-A-3-18372 (JP, A) JP-A-3-15472 (JP, A) JP-A-62-272362 (JP, A) JP-A-6-245980 ( JP, A) Japanese Utility Model Showa 58-73245 (JP, U) Japanese Utility Model Showa 58-191039 (JP, U) Japanese Utility Model Showa 59-130 (JP, U) Japanese Utility Model Showa 43-30876 (JP, Y1) (58 ) Surveyed field (Int.Cl. ⁶ , DB name) A61L 2/00-2/26

Claims (1)

(57) [Scope of request for utility model registration] 1. A liquid ejector configured to be able to eject a liquid from a liquid storage tank having an opening / closing lid to an injection nozzle through a pressure feed pump and eject the liquid, and to lock the opening / closing lid and a liquid in the liquid storage tank. A liquid ejector comprising: a liquid level detection sensor for detecting a liquid level, wherein when the liquid detection sensor detects that the liquid exchange required liquid level has been reached, the opening / closing lid lock device can be released.