JPS58157439A - Cleaning apparatus for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope cleaning device that can selectively supply cleaning water and a chemical solution to a cleaning tank.

Generally, endoscope cleaning devices are known that are capable of not only simply cleaning the endoscope with cleaning water, but also disinfecting it with a chemical solution after cleaning.

In the case of disinfection using a chemical solution, a method of storing the chemical solution in a cleaning tank and immersing the endoscope for a predetermined period of time has come to be widely used. In this type of cleaning equipment,
It must be possible to selectively supply cleaning water and chemical solutions to the cleaning tank in which the Therefore,
The cleaning tank is connected via piping to a water supply tank containing cleaning water and a chemical solution tank containing a chemical solution via fluid control equipment such as a pump and a switching valve. In addition, the above water supply tank is designed to be supplied with wash water from the water supply [phase] such as tap water via a switching valve, so if the wash water overflows due to a malfunction of the above switching valve, the excess water will be replaced. It is considered that the water is drained into the above-mentioned cleaning tank.

Therefore, the chemical solution is stored in the cleaning tank and the endoscope is cleaned! i
(In the case of sterilization by soaking, the sterilization cannot be performed reliably unless it is detected whether or not a predetermined amount of chemical solution is supplied to the cleaning tank.

Furthermore, if the overflowing cleaning water from the water supply tank is discharged into the cleaning tank and the water level rises as described above during immersion disinfection, if this is not detected and the liquid in the cleaning tank is not immediately discharged, the cleaning This could lead to a serious accident in which the liquid overflows from the tank.

This invention has been made based on the above circumstances, and its object is to provide a water level detection device having two contact portions for detecting different water levels in the cleaning tank, so that a predetermined amount of liquid can be supplied to the cleaning tank. An object of the present invention is to provide an endoscope cleaning device that detects whether liquid is being supplied and whether liquid is not being supplied above a predetermined level.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 in Fig. 1 is the main body of the cleaning device for the internal value, and inside the main body 1 of the device there is a cleaning tank 1 (
(shown in FIG. 4) is provided. The opening of the cleaning tank 2 is closed by a cover 3 that can be opened and closed. and,
By installing an endoscope (not shown) inside the cleaning tank 2, this endoscope can be automatically cleaned and disinfected using cleaning water or a chemical solution (described later).

An endoscope fixing part 4 consisting of a recess is provided at the left end of the front end of the upper surface of the device main body l, and this fixing part 4 is used to clean and disinfect an endoscope whose insertion part can only be cleaned. When doing so, the operating section is installed. A plurality of supply ports 5 are provided near the fixing part 4, which are connected to the operating part installed in the fixing part 4 by tubes (not shown), and are used to supply cleaning water and chemical solutions to the channels of the endoscope. ... is provided.

Furthermore, in an endoscope that can be completely cleaned, the operating section is also installed in the cleaning tank 2, so the supply ports 5 used at that time are provided in the cleaning tank 2.

A main panel s6 constituting an operation panel is provided at the right end of the front end of the upper surface of the device main body 1, and a sub-panel portion 8 is installed at the upper front of the device main body 1 below the main panel s6. ing. As shown in FIG. 2, the main panel s6 is provided with relatively frequently used switches and displays. As switches, a detergent switch 10, a disinfection switch 11, an overnight switch 12, a stop switch 13, a start switch 14, and a leakage inspection switch 15 are provided. I, each switch 10 except the stop switch 13
,11°7! , 14.75 are provided with indicator lamps 1g, 11, 111, and 19.10 that indicate when each switch is operated. The main panel 1fl- is provided with display sections xxa and x1b that display the water washing process and air blowing process during cleaning, and display sections 21G and 11d that display the water washing process and air blowing process during disinfection. Display lamps 12°13.24 are placed above each display section JJI to xxd.
, 25, 26 are provided. In addition, the display lamp 24
is to indicate the disinfection process. In addition, the main panel part 6 has a construction of 4! A time display @IF consisting of a 4-digit LED is provided to display the remaining time of operation, and an abnormality lamp 28 is provided at the upper right side to indicate that an abnormal situation occurs during process operation. ing. All of the switches mentioned above are touch-type switches that can be operated simply by touching them, and are sheet-type switches whose external shapes do not protrude from the surface of the main panel section C.

Further, the display devices are also provided so as not to protrude from the surface of the main panel section 6. In other words, the main panel s-
The surface is generally flat.

On the other hand, as shown in FIG. 3, the sub-panel iB& has switches such as a push-button power switch 31 and a flush time setting timer 1 consisting of a click-type dial switch.
A disinfection time setting timer 33, a water flush switch 34 for cleaning water consisting of a two-action switch, an air switch 35, and a discharge switch 36 for discharging the chemical solution in the cleaning tank 2 are provided. The two-action switch is turned on by the first operation and turned off by the second operation. In this way, since the sub-panel section 8 is mainly installed with items that are rarely used, even if the sub-panel section 8 is located in a recessed area on the front of the main body 1 of the device, it will not interfere with use. Never.

Next, the internal structure of the device main body 1 will be explained based on FIG. 4. Inside the device main body 1 are a water tank 40 and a detergent tank 4.
1 and a chemical tank 42 are provided. The upper part of the water supply tank 40 is connected to a tap water faucet 45, which is a water supply source, via a filter 4J and a first switching valve 44.

Furthermore, a first water level detection device 46 is provided within the water supply tank 40 . This first water level detection device 4- has first to third contact portions 47m that detect water levels at different heights,
4rb, 41C, these contacts i114Fm, 4F
Various devices are controlled as described later by the on/off states of Fc and Fc. Furthermore, one end of a communication pipe 48 is connected to the upper part of the water supply tank 40. The other end of this communication pipe 48 is connected to the cleaning tank 2, and is used to vent air in the water tank 40 and to release it to the cleaning tank 2 when too much cleaning water is supplied to the water tank 40. There is.

Further, a water supply pipe 49 is connected to the bottom of the water supply tank 40. This water supply pipe 4g communicates with a first liquid pump 51 via a second switching valve 50. Great, water pipe 4
9 is connected to the detergent tank 41 via a third switching valve 52 and an orifice j3, and is further connected to the inside of the cleaning tank 2 (a rotary nozzle 55 provided therein) via a second liquid pump 54 and a filter 55. The rotary nozzle 55 is rotatably driven by a first motor 56.

Further, a second water level detection device 5 is installed in the chemical tank 42.
7 is provided. This second water level detection device 57 is
Contact portions 58a, 511b, 5a of fgl to #I3 that detect different water levels of the chemical liquid stored in the chemical liquid tank 42
c, and communicates with a plug 51 that controls various devices as described later by the on/off states of these contact portions 58m, 58b, and 51c. Further, the upper part of the chemical tank 42 is connected to a 3-position fifth switching valve 61 which is switched by a second motor 601 via a cam (not shown). That is, the fifth switching valve 61 is formed with two outflow ports 3 and one inflow port, and the chemical solution tank 42 is connected to one of the outflow ports. A drain pump d2 is connected to the other outflow port, and the inflow port is connected to the bottom of the cleaning tank 2. The fifth switching valve 6J is
A first state in which the cleaning tank 2 and the chemical tank 42 are connected to each other, a second state in which the outflow of liquid from the cleaning tank 2 is disconnected, and a third state in which the cleaning tank 2 and the drain pump 62 are connected to each other are disconnected. It's about to change.

Further, a sixth t is provided on the discharge side of the first liquid pump 5).
/I sho 63 is connected. This sixth switching f6
3 has two outflow ports, one of which communicates with the cleaning tank 2 and the other of which communicates with the mixing header 66 via the first check valve 64.
It is connected to the. This mixing header 65 is connected to the discharge side of the liquid pump 54 of the 10th I-piston 2 via a second reverse valve 66, and the air of 61!1 is connected via the third check valve 61. A pump 61 is connected. 147 switching valves 69 are connected between the first T-pump 8 and the third check valve 67, and when the seventh switching valve 69 is operated in the closed state, Compressed air is supplied to the mixing header #1 only during this period. Moreover, the mixing header 65 is provided with a supply port 5 similar to the supply port 5 provided outside the device main body 1,
Supply port 5 when cleaning an endoscope that can be completely cleaned
The internal viewing channel 10 is connected to...

Further, a third water level detection device 71 is provided in the upper ml washing tank 2 . This third water level detection device 71 has a first contact @ 73 a and a second contact @ 7 j b that detect water levels of different degrees, and these contacts @'rza,'
Depending on the on/off state of tab, various devices are controlled as described below.

Furthermore, a second air pump 73 is provided within the device main body 1. The compressed air from this second air pump 13 is passed through a relief valve r4 to a connection port (not shown) provided in the connector 75 of the universal cord of the endoscope.
is supplied to the inside of the endoscope. Therefore, if compressed air is supplied while the entire endoscope is immersed in cleaning water in the cleaning tank 1, if there is a hole in the outer skin of the endoscope, the hole can be detected by the air leaking from the hole. It is now possible to do so. In addition, if compressed air is supplied when cleaning or disinfecting the endoscope, even if there is a hole in the outer skin of the endoscope, cleaning water or chemicals can be prevented from entering the inside through the hole. can.

First, the first to II3 contact portions 47M, 47b, and 47C of the first water level detection device 46 are connected to the CPU r& as a control portion, as shown in FIG. and,
If the first contact portion 41m is on before starting the cleaning device, it means that enough cleaning water is supplied to the water tank 40, and the first switching valve 44 is turned on by the signal from the CPUF 4f. is closed.

When the cleaning device is started and the cleaning process begins, the water level in the water tank 40 decreases. And the second contact portion 47b
When the switch is turned off, the first switching valve 44 is opened by the CPUF 4F in response to the signal, and cleaning water is supplied to the water supply tank 40.

That is, the water level of the water supply tank 40 is determined by the first contact IB47.
W is controlled between a and w, contact lI47b of 2.

Also, before starting the cleaning device, the second contact part 4
When the CPU 7b is off, the cleaning water necessary for the cleaning process is not stored in the water supply tank 40 in advance, so the cleaning device cannot be started by a signal from the CPU 7C at that time. Furthermore, 5
g, the drain pump 62 and the first air pump 6# are stopped, and the motor 60 of iw2 causes the fifth switching valve 6J to connect the cleaning tank 2, and the second switching valve 50
, the third switching valve 51 and the fourth switching valve j9 are switched to the closed state.

That is, the cleaning device is stopped. Further, at this time, the abnormality lamp 28 provided on the main panel section 6 lights up, and a buzzer (not shown) sounds to indicate this fact.

Furthermore, the first to third contact portions sag, s8b, and sac of the second water level detection device j1 are connected to the CPUF#, which is a control portion, as shown in FIG. This first contact portion sag detects an abnormal rise in the water level in the chemical tank 41 (due to inflow of cleaning water, etc.), and this first contact portion 58m is turned on before operating the cleaning device. Sometimes the signal from cpuyg does not allow the disinfection process to start. During the cleaning process, pump 6J and first air pump 6
8 stops, and the fifth switching valve 6 is operated by the motor 60 of copper 2.
At the same time, the second switching valve 62 and the fourth switching valve 5# are switched to the closed state. That is, the cleaning device is stopped. Further, at this time, the abnormality lamp 1a provided on the main panel section C lights up, and a buzzer (not shown) sounds to indicate this fact. Also,! ! It is normal when the contact part jJtb of 2 transfers the chemical solution in the chemical solution tank 42 to the cleaning tank 2 and starts the immersion sterilization process, but after starting the immersion sterilization process, the chemical solution recovery process This is because when the liquid is turned on when removing the inside, the chemical liquid leaks from the cleaning tank 2 into the chemical liquid tank 41 and the water level rises. is controlled, the cleaning device stops, the abnormality lamp 21 lights up, and the buzzer sounds. However, at this time, the drain pump 62 is stopped, and the fifth switching valve 61 is placed in a state where the cleaning tank 2 and the chemical solution tank 42 are communicated with each other, that is, the disinfection process is interrupted and the chemical solution is recovered. Furthermore, if the second contact jab is off from the beginning, it means that there is not enough chemical solution in the chemical tank 42 to immerse the endoscope in it for disinfection. Unable to start process. Furthermore, the third contact part SaC is turned on when the water level of the chemical solution tank 42 is above a predetermined level during the disinfection factory, that is, after a predetermined amount of the chemical solution is supplied to the cleaning tank 2 and turned off once. When the chemical liquid leaks from the cleaning tank 2 into the chemical liquid tank 42, the operation of the cleaning device is controlled by the signal from the CPU 76 in the same way as when the first contact part saa is turned on midway, and the operation of the cleaning device is stopped. I am made to do so.

In addition, the first contact portion 72a of the water level detection device 11 of 4↓3
The contact portions 72b of and 42 are connected to a CPU 76, which is a control portion, as shown in FIG. The first contact part 72a detects that the water level in the cleaning tank 2 has become abnormally high.When the first contact part 12a is turned on during the disinfection process, the motor 60 of @2 , a state in which the fifth switching valve 61 communicates the cleaning tank 2 and the drain pump 62 (when this switch is made, the drain pump 62 operates to discharge the liquid in the cleaning tank 2. Among the devices, the first liquid pump 51 is stopped and the fourth switching valve 59 is closed.Furthermore, the second contact portion 7Jb is for detecting the appropriate water level in the cleaning tank 2, and is used during the disinfection process. When it is turned on, the chemical solution is supplied to the cleaning tank 2 at the appropriate water level and the water level is reduced.
When a predetermined amount of liquid is supplied to the cleaning tank 2 and turned on and then turned off, the chemical liquid is supplied from the cleaning tank 2 to the chemical tank 4.
2 or the drain pump 62 side is leaking, so in this case, various devices are controlled in the same way as when the first contact part 58a of the water level detection device 51 of IR2 is turned on in the middle of the disinfection process. The cleaning equipment will stop when the

Next, a process of cleaning and disinfecting the endoscope using the upper lki cleaning device will be described. First, an endoscope is installed in the cleaning tank 2, and if the entire endoscope can be cleaned and disinfected, the entire endoscope is installed in the cleaning tank 2. Then, the various channels 70 of the endoscope and the supply port 5 are connected with a tube (not shown). Further, a second air pump 73 is connected to a connection port provided in the connector 1j for leakage testing of the endoscope through a tube (not shown). If such preparations are covered,
Power switch 3 of sub-panel section 1 with cover 3 open
Turn on 1 to make it ready for operation. When the leak test switch 15 on the main panel section 6 is pressed, the indicator lamp 10 on the main panel II6 immediately lights up to indicate that a leak test is in progress. This display will remain lit until all leak tests are completed. At the same time, the second motor #0
is activated to close the fifth switching valve 61 and disconnect the cleaning tank 2. Note that the switching operation of this fifth switching valve 61 is properly regulated by a limit switch incorporated therein. Immediately after the outflow of the cleaning tank 1 is completely blocked in this way, the second air pump r1 starts operating and supplies compressed air to the internal space of the endoscope. On the other hand, when a certain period of time T1 has elapsed after the second air pump 11 is activated, the second switching valve 10 is opened, the sixth switching valve 13 is switched to the state in which the cleaning tank 1 is opened, and 1 liquid pump Nil is activated.

Therefore, the cleaning water in the water supply tank 4- is detected by the eighth detection 5tab of the third water level detection device 11 provided in the cleaning tank 2.
is fed by the neck which is turned on.

In this way, when water is poured into the cleaning tank 1, the entire endoscope installed in the cleaning tank 1 is submerged in water. And this endoscope @4! As mentioned above, since it is pressurized with compressed air, if there is a leak such as a crack or pinhole in the outer skin of the endoscope, air bubbles will come out from there. Therefore, by observing and confirming this, the leakage site can be discovered.

In addition, if the leak test switch 15 is pressed again within a predetermined time, the operating time will be extended, but if the switch is not pressed, the second motor O will automatically operate after the predetermined time has passed and the fifth switching valve will be activated. 61 is switched to the discharge side, and at the end of this switching, the drain pump 61 is operated to discharge the water in the cleaning tank 2. 11. The second air pump 13 also stops, but
The pressurized state of the internal space of the endoscope continues for a while. and,
When all the water in the cleaning tank 2 has been drained, a termination buzzer sounds to notify you of this.

Next, the operations of the cleaning process using cleaning* and the disinfection process using a chemical solution will be explained. When only the cleaning process is selected, only that cleaning process is performed, but when the disinfection process is selected,
A cleaning step is performed as a pre-process. Therefore, we will explain the steps to take when selecting a disinfection process. First, after setting the water washing time setting timer 32 and the disinfection time setting timer 33 to a predetermined time, turn on the start switch 14, the indicator lamp III will light up, and the time display will show the full process time. 174 items are displayed. Further, the second motor 60 operates to switch the fifth switching valve 61 to the discharge side. Immediately after this σ), the second liquid pump 51 is activated, and the tsl motor 56 is activated to rotate the rotating nozzle 55.
Rotate. At the same time, the 7th σ) switching valve 6g
is switched to close, and the first air pump 68 is activated. Therefore, each food channel 10 of the endoscope is supplied with cleaning water sent from the water supply tank 40 by the second liquid pump 64 and pressure Ji sent from the first air pump 68.
It is sent in a mixed state with air in the mixing header 65. That is, since a so-called bubble flow is fed into the channel 70, the channel 10 can be effectively cleaned by 6C. In addition, the cleaning water in the water supply tank 40 is also sent to the first air pump 68 and the rotating nozzle 55.
In cleaning 4!12, cleaning water is sprayed onto the surface of the endoscope.

On the other hand, a detergent can also be added to the washing water in this washing step. When adding detergent, turn on the detergent switch 10 before turning on the start switch J4.

Then, the third switching valve 52 opens for a predetermined amount of time according to the washing time set by the washing time setting timer 32.
During actual washing, the detergent in the detergent tank 41 is added to perform what is called detergent washing. For example, if you set the flushing time setting timer J2 to 3 minutes, the first one will start at the same time as the flushing starts.
The detergent is added for 5 minutes, and the detergent is applied for 2 minutes after 1 minute has passed since the start of washing. Furthermore, at 6 minutes (this means 3 minutes after 1 minute has passed after the start of cleaning).
Detergent is added for minutes. That is, detergent switch 1
If 0 is entered, the time for adding detergent will be automatically set according to the washing time set by the washing time setting timer 32, and after washing with detergent, only washing water will be supplied to remove the detergent. , a so-called rinsing process is performed for a certain period of time.

When this rinsing process is completed, the second liquid pump 54 is stopped, and the supply of washing water is stopped.

At the same time, the first motor 56 stops, and the rotating nozzle 6
5 stops rotating. However, the first air pump 61
continues to operate for a certain period of time to supply only air into the channel 10 of the endoscope and discharge the cleaning water remaining therein. Incidentally, the drain pump 62 starts operating and automatically stops when the washing water in the washing tank 2 is completely exhausted.0 or above is the washing process, and if only the washing process is selected, the process ends here. However, when the disinfection switch 11 is pressed to select a disinfection factory, the disinfection process is performed following the cleaning process.

That is, the second motor 60 operates and the fifth switching valve 6
1 switches to the cut-off state. Immediately after this, the fourth switching valve 5#
opens and the liquid pump 51 of 1111 operates, thereby supplying the chemical liquid in the chemical liquid tank 42 to the cleaning tank 2.

When the endoscope is sufficiently immersed in the chemical solution, the second contact 1i7jb of the third water level detection device I turns on to detect this, and this detection signal is input to the CPU 161. This causes the sixth switching valve 63 to switch,
A medical solution is supplied to the channel 70 of the endoscope. When the channel 10 is filled with the chemical liquid and the third contact portion 58c of the third water level detection device 51 is turned off, the fourth switching valve 59 is closed and the liquid pump 51 of the pump is stopped. do. That is, not only the outer surface of the endoscope but also the inside of the channel 10 is immersed and sterilized in the chemical solution.

Then, when the time set by the disinfection time setting timer 3J has elapsed, the chemical solution recovery operation is performed. That is, the second motor 60 operates to switch the inlet of the fifth switching valve 61 to the chemical tank 42, and the chemical in the cleaning tank 2 is returned to the chemical tank 42, and the first air pump 6a is activated to also discharge and collect the chemical liquid that has entered the channel 10 of the endoscope.

When this collection is completed, the second motor 60 operates again, the fifth switching valve 61 is switched to the discharge side, and the drain pump 62 starts operating. At the same time, the first air pump 68 and the second liquid pump 54 are operated to carry out the same rinsing operation as described above, that is, the ring 11Sl flow bottle is rinsed with water without the addition of detergent. , the inside of the channel 70 as well as the outer surface of the endoscope is rinsed.

When this rinsing step is completed, the second liquid pump 54 is stopped and only the first air pump 68 continues to operate to drain the water inside the channel 70.

In addition, when the disinfection switch 11 is turned on and the overnight switch 12 is turned on in the disinfection process, the endoscope is immersed in the chemical solution for a long time, for example, about 10 hours, and then the above-mentioned rinsing process and draining process are performed. will be carried out. Such overnight sterilization is often used to reliably disinfect endoscopes with excellent chemical resistance.

- By turning on the manual flushing switch 34 or the air switch 35 provided on the sub-panel s35, the above-mentioned washing and draining can be carried out, and when replacing the chemical solution in the chemical solution tank 42, the discharge switch can be turned on. 36, the first liquid pump s1,
Drainage pump 62, fourth. Fifth. Sixth switching valve 59.61
．． 63 is activated and the chemical solution is discharged.

By the way, according to the cleaning device having the above configuration, there are two different water levels in the cleaning tank 2, that is, the first one detects that the water level in the cleaning tank 1 has risen abnormally, and the other detects that the water level in the cleaning tank 1 is appropriate. A third water level detection device 11 having second contact portions yza and yzb was provided. Therefore, when a predetermined amount of cleaning water or a chemical solution must be stored in the cleaning tank 2, such as when inspecting endoscopes for leaks or sterilizing them by immersing them in a chemical solution, it is necessary to store a predetermined amount of cleaning water or a chemical solution in the cleaning tank 2. is detected by the second contact portion yzb, and the supply of cleaning water and chemical solution is stopped in response to this detection signal.

Therefore, the water level of the cleaning water or chemical solution in the cleaning tank 2 can be automatically maintained at an appropriate level, so that the above-mentioned leakage inspection and immersion disinfection can be performed reliably and quickly.

Additionally, a first switching valve 4 controls the supply of cleaning water to the water tank 40 during leakage inspection or immersion disinfection.
4 or the first water level detection device 46 malfunctions, and the cleaning water continues to be supplied, and the cleaning water overflowing from the water supply tank 40 flows into the communication pipe 41.
When the water flows into the cleaning tank 2 through the water, the water level in the cleaning tank 2 rises abnormally. In such a case, the abnormally raised water level is detected by the first contact part 12 of the third water level detection device 11.
m detects it, and this detection signal is input to the CPU 7g.

Then, the drain pump 62 is operated by the output from the CPU 76, and the switching valve 61 of II5 is switched to the discharge side, so that the liquid in the cleaning tank 2 is discharged, so that the liquid does not overflow from the cleaning tank 2. I never go out.

At this time, the operation of the cleaning device is stopped and the abnormality lamp 28 or buzzer is used to notify that an abnormality has occurred.
Subsequent treatment can be carried out reliably and quickly.

As described above, in the present invention, a water level detection device having two contact portions for detecting different water levels in the cleaning tank is provided in the cleaning tank to which cleaning water and chemical solution are selectively supplied.
The two contact points can detect whether the water level in the cleaning tank has risen abnormally or has become appropriate. Therefore, when storing cleaning water or chemical solutions in the cleaning tank, the water level at that time can be automatically and reliably maintained at an appropriate level. Even if the water level rises abnormally due to inflow into the
This can be reliably detected and the liquid can be discharged from the cleaning tank.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view of the cleaning device, FIG. 2 is a plan view of the main panel section, FIG. 3 is a plan view of the sub-panel section, and FIG. FIG. 9 is a time chart for a four-mirror leakage test, and FIG. 9 is a time chart for a cleaning process and a disinfection process. 2...Cleaning tank, 71...Water level detection device (13), 1
2a: first contact portion; 12b: contact portion of silk 2; Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3

Claims (3)

[Claims] (1) An endoscope cleaning device characterized in that a cleaning tank to which cleaning water and a chemical solution are selectively supplied is provided with a water level detection device having two contact points for detecting different water levels in the cleaning tank. Device. (2) The endoscope cleaning device 0 according to claim 1, wherein one contact portion of the water level detection device detects when too much liquid is supplied to the cleaning tank. (3) The endoscope cleaning device according to claim 1, wherein the other contact portion of the water level detection device detects an appropriate water level of the liquid supplied to the cleaning tank.