JP2016140677A - Cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning device facilitating cleaning of a lower part in a cleaning tank.SOLUTION: The cleaning device includes: a cleaning tank 2 in which cleaning objects are stored; cleaning nozzles 3 for jetting liquid to the cleaning objects in the cleaning tank 2; a liquid storage part 4 concatenated to a lower part inside the cleaning tank 2; water feeding means 5 to the liquid storage part 4; drainage means 6 from the liquid storage part 4; a first heater 10 for heating the liquid in the liquid storage part 4; circulation means 8 circulatingly feeding the liquid in the liquid storage part 4 to the cleaning nozzles 3. The first heater 10 is means for heating a wall of an upward-opened box-shaped part 2b constituting the liquid storage part 4, from the outside and opened upward, and comprises, for example, a steam jacket 10A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cleaning device that performs cleaning by jetting a liquid onto an object to be cleaned.

  Conventionally, as disclosed in Patent Document 1 below, a spray arm (8) is rotatably provided in a chamber (3), and a liquid is ejected from a nozzle of the spray arm (8) onto an object to be cleaned. A cleaning device for cleaning or disinfecting an object to be cleaned is known. In this apparatus, the liquid ejected from the spray arm (8) is collected in a collection space (10) below the chamber (3), and is sprayed by the circulation pump (12) via the circulation pipe (16) ( It is circulated and supplied to 8).

  In connection with this type of washer, the applicant proposed a washer that can heat the liquid in the liquid reservoir even before the start of circulation by providing a heater in the liquid reservoir in the lower part of the washing tank. (Claim 4 of Japanese Patent Application No. 2014-205162, paragraphs 0013-0014).

Japanese Patent No. 48868847

  In the case of the invention of the prior application, the heating tube of the electric heater or the steam heater is inserted into the liquid storage part. For this reason, even when trying to clean the lower part in the cleaning tank, the work is not possible and the workability is poor.

  Therefore, the problem to be solved by the present invention is to provide a cleaning device that can easily clean the lower part in the cleaning tank.

  The present invention has been made to solve the above problems, and the invention according to claim 1 is a cleaning tank in which an object to be cleaned is accommodated, and a cleaning in which a liquid is jetted onto the object to be cleaned in the cleaning tank. A nozzle, a liquid reservoir connected to the lower part in the cleaning tank, a water supply means to the liquid reservoir, a drain means from the liquid reservoir, a heater for heating the liquid in the liquid reservoir, Circulation means for circulatingly supplying the liquid in the liquid reservoir to the cleaning nozzle, and the heater is a means for heating the wall of the box-shaped portion that opens upward that constitutes the liquid reservoir from the outside. This is a featured washer.

  According to the first aspect of the present invention, the heater that heats the liquid in the liquid reservoir is a means for heating the wall of the box-shaped portion that opens upward that constitutes the liquid reservoir from the outside. The heating part does not protrude into the part. Therefore, cleaning in the liquid storage unit can be easily performed.

  According to a second aspect of the present invention, the heater is a steam jacket provided so as to surround the front and rear side walls and the left and right side walls and the bottom wall of the box-shaped portion opened upward, and steam is supplied into the steam jacket. By doing so, the liquid in the liquid storage part is heated.

  According to the second aspect of the present invention, the heater for heating the liquid in the liquid storage section is a steam jacket provided so as to surround the front and rear and the left and right side walls and the bottom wall of the box-shaped part opened upward. Therefore, the heat generating part does not protrude into the liquid storage part, and cleaning is easy. And since the five surfaces of the said box-shaped part become a heat-transfer surface, the heat-transfer area can be ensured and the liquid in a liquid storage part can be heated rapidly.

  Furthermore, the invention according to claim 3 is the cleaning device according to claim 2, wherein the side walls and the bottom wall are provided with irregularities.

  According to invention of Claim 3, since the unevenness | corrugation was provided in each side wall and bottom wall of the said box-shaped part, the heat-transfer area can be ensured and the liquid in a liquid storage part can be heated rapidly.

  According to the cleaning device of the present invention, the lower portion in the cleaning tank can be easily cleaned.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the washing | cleaning device of one Example of this invention, and shows one part in cross section.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic view showing a cleaning device 1 according to an embodiment of the present invention, and a part thereof is shown in cross section. The cleaning device 1 of this embodiment can be used as a washer disinfector.

  The cleaning device 1 of this embodiment is connected to a cleaning tank 2 in which an object to be cleaned is accommodated, a cleaning nozzle 3 for injecting a liquid to the object to be cleaned in the cleaning tank 2, and a lower part in the cleaning tank 2. Liquid storage part 4, water supply means 5 to this liquid storage part 4, drainage means 6 from liquid storage part 4, chemical solution supply means 7 to liquid storage part 4, and cleaning nozzle for liquid in liquid storage part 4 Circulator 8 for circulating and supplying to 3, a blower 9 for sending air into the cleaning tank 2, a first heater 10 provided in the liquid reservoir 4 for heating the liquid, and air into the cleaning tank 2 by the blower 9 And a control means (not shown) for controlling the blowers 9 and the heaters 10 and 11.

  The object to be cleaned is not particularly limited, but is a medical instrument such as forceps. In the cleaning tank 2, cleaning nozzles 3 are provided in a plurality of upper and lower stages, and an object to be cleaned is disposed between the upper and lower cleaning nozzles 3. At this time, an object to be cleaned is placed on a net shelf (not shown) provided in the upper and lower stages in the cleaning tank 2. Further, the object to be cleaned may be accommodated in a basket or the like as desired.

  The cleaning tank 2 is a hollow container that accommodates an object to be cleaned. In the present embodiment, the cleaning tank 2 has a substantially rectangular hollow box shape. The cleaning tank 2 can be opened and closed by a door (not shown). The object to be cleaned can be taken in and out of the cleaning tank 2 by opening the door. The door is provided on the front surface of the cleaning tank 2, but may be provided on both the front surface and the back surface of the cleaning tank 2.

  The cleaning tank 2 is preferably provided with a jacket 12 as a hollow portion opening downward in the cleaning tank 2 on at least the left and right side walls. In the present embodiment, the jacket 12 is continuously formed on the upper wall and the left and right side walls of the cleaning tank 2. Specifically, the upper wall and the left and right side walls of the cleaning tank 2 have a double structure of an inner wall and an outer wall, and a jacket 12 is configured with a gap between the inner wall and the outer wall. At that time, the jacket 12 is closed before and after the cleaning tank 2 and opens downward on the left and right side walls. Thus, the left and right jackets 12 open to the lower part in the cleaning tank 2. In addition, when the washing tank 2 does not include a door on the back surface, the jacket 12 may be provided on the back surface of the washing tank 2.

  The cleaning nozzle 3 is provided in the cleaning tank 2 in multiple upper and lower stages. In the present embodiment, the base end portion of the arm-shaped support member 13 is held in one side portion of the cleaning tank 2 in a plurality of upper and lower stages. Extend towards. Then, the central portion in the longitudinal direction of the cleaning nozzle 3 is held at the extended tip portion so as to be rotatable around the vertical axis. The cleaning nozzle 3 is formed with a plurality of nozzle holes (not shown) for ejecting fluid (liquid or air) supplied through the support member 13. When a fluid is supplied into the cleaning nozzle 3 through the support member 13, the fluid is ejected from the nozzle hole of the cleaning nozzle 3. With this jet, the cleaning nozzle 3 rotates around the bearing portion at the end of the support member 13. The cleaning nozzle 3 provided at the upper end in the cleaning tank 2 ejects fluid only downward, and the cleaning nozzle 3 provided at the lower end in the cleaning tank 2 ejects fluid upward only, The cleaning nozzles 3 other than the unit inject fluids both upward and downward.

  The liquid storage unit 4 is connected to the lower part in the cleaning tank 2. In other words, the cleaning tank 2 includes the liquid storage unit 4 in the lower part. In the present embodiment, the lower wall of the cleaning tank 2 is formed as an inclined surface 2a that is inclined downward as both left and right end portions go inward in the left-right direction, and the central portion in the left-right direction is recessed downward in a substantially rectangular shape. The recess extends in the front-rear direction and the front and rear ends are closed by a wall (not shown). As a result, a box-shaped portion 2 b that opens upward is formed in the lower portion of the cleaning tank 2. And the lower part in the washing tank 2 is made into the liquid storage part 4 in the form including this box-shaped part 2b. During the operation of the circulation means 8, the liquid sprayed from the cleaning nozzle 3 into the cleaning tank 2 falls downward in the cleaning tank 2, and is collected in the box-shaped part 2b by the inclined surface 2a.

  The water supply means 5 supplies water to the liquid storage section 4 at the lower part of the cleaning tank 2 via a water supply path 14. In the present embodiment, the water supply from the water supply channel 14 is sent from the upper part of the cleaning tank 2 to the liquid storage unit 4. A check valve 15 and a water supply valve 16 are provided in the water supply path 14 toward the cleaning tank 2. Water is supplied into the cleaning tank 2 through the water supply path 14 from the upper part of the cleaning tank 2 into the jacket 12. Therefore, the water from the water supply channel 14 is discharged to the lower part in the cleaning tank 2 through the left and right jackets 12 and supplied to the liquid storage unit 4.

  In the illustrated example, only one water supply channel 14 is shown, but each water supply channel 14 of normal temperature water and hot water may be provided in parallel if desired. At that time, each water supply path 14 of normal temperature water and warm water may be joined in the middle, and water supply to the washing tank 2 as a desired temperature may be possible. Furthermore, the water supply path 14 may be provided in parallel so that water selected from different types of liquids such as soft water or RO water in addition to tap water can be supplied into the cleaning tank 2.

  The cleaning tank 2 with the liquid storage part 4 is provided with a liquid level detector (not shown). Although the liquid level detector does not ask | require the structure in particular, For example, it is comprised from the pressure sensor installed in the bottom part of the liquid storage part 4. FIG. In this case, the liquid level is grasped by utilizing the fact that the water pressure changes according to the liquid level in the liquid storage unit 4 (and the cleaning tank 2). The cleaning tank 2 is provided with an overflow path 17 for discharging a predetermined amount or more of liquid to the outside.

  The drainage means 6 drains from the liquid storage part 4 at the lower part of the cleaning tank 2 via a drainage channel 18. The drainage channel 18 extends downward from a bottom wall of the box-shaped portion 2b through a steam jacket 10A described later in an airtight manner. A drain valve 19 is provided in the drain channel 18. By opening the drain valve 19, the stored water in the liquid storage unit 4 can be drained to the outside.

  The chemical liquid supply unit 7 supplies the chemical liquid to the stored water in the liquid storage unit 4 via the liquid supply path 20. Specifically, a chemical liquid tank 21 in which a chemical liquid is stored is connected to the cleaning tank 2 via a liquid supply path 20, and a chemical liquid pump 22 is provided in the liquid supply path 20. By controlling the operation of the chemical liquid pump 22, the amount of chemical liquid supplied from the chemical liquid tank 21 into the cleaning tank 2 can be adjusted. Note that a plurality of sets of the chemical liquid tank 21 and the liquid supply path 20 may be provided in parallel so that the type of the chemical liquid can be changed. For example, a plurality of chemical tanks 21 storing desired chemicals such as alkaline detergents, enzyme-containing detergents, lubricating rust preventives, and drying accelerators may be provided, and the chemicals to be used may be changed depending on the object to be cleaned and the process. .

  The circulation means 8 circulates and supplies the stored liquid in the liquid storage unit 4 to the cleaning nozzle 3. Specifically, the circulation means 8 includes a circulation pump 23 and a circulation pipe 24. The circulation pump 23 is provided on the lower side of the liquid storage unit 4. A branch path 25 is branched in the drain path 18 upstream from the drain valve 19, and the branch path 25 is connected to a suction port of the circulation pump 23. On the other hand, the discharge port of the circulation pump 23 is connected to the support member 13 of the cleaning nozzle 3 via an appropriate circulation pipe 24. Accordingly, when the circulation pump 23 is operated, the liquid in the liquid storage unit 4 can be supplied to the cleaning nozzle 3 via the circulation pipe 24 and the support member 13, and the liquid ejected from the cleaning nozzle 3 Returned to the reservoir 4.

  The 1st heater 10 is provided in the liquid storage part 4 in a present Example, and heats a stored liquid. Under the present circumstances, the 1st heater 10 heats the wall of the box-shaped part 2b opened upwards which comprises the liquid storage part 4 from the outer side. Specifically, in the present embodiment, the first heater 10 is a steam jacket 10A as a hollow portion provided so as to surround the front and rear of the box-shaped portion 2b and the left and right side walls and the bottom wall. Then, the liquid in the liquid storage unit 4 is heated by supplying the steam into the steam jacket 10A. That is, steam is supplied into the steam jacket 10 </ b> A via the steam supply path 26. The temperature of the stored liquid can be adjusted by controlling the opening / closing or opening of the steam supply valve 27 provided in the steam supply path 26. The steam condensate supplied to the steam jacket 10 </ b> A is discharged through the drain discharge path 28. A steam trap 29 and a check valve 30 are provided in the drain discharge path 28 from the steam jacket 10A.

  In the case of such a configuration, the front and rear left and right side walls and the bottom wall of the box-shaped part 2 b are formed in a flat plate shape at least on the inner side of the liquid storage part 4, and the heat generating part does not protrude into the liquid storage part 4. Therefore, the cleaning tank 2 can be opened and the liquid storage unit 4 can be easily cleaned. And since the five surfaces of the box-shaped part 2b become a heat-transfer surface, the heat-transfer area can be ensured and the liquid in the liquid storage part 4 can be heated rapidly. However, the side walls and the bottom wall may be provided with irregularities as desired. For example, appropriate irregularities may be bent and formed on the plate constituting the box-shaped portion 2b. Even in that case, cleaning is easier than in the case where the heating pipe of the electric heater or the steam heater enters the space in the liquid storage unit 4. Moreover, by providing irregularities on each side wall and bottom wall of the box-shaped part 2b, the heat transfer area can be secured and the liquid in the liquid storage part 4 can be heated quickly.

  The blower 9 is connected to the upper part of the cleaning tank 2 via an air supply path 31. The air supply path 31 from the blower 9 is branched downstream from the second heater 11, the first air supply path 31 a is connected to the circulation pipe 24 via the air supply valve 32, and the second air supply path 31 b is washed. It is connected to the jacket 12 at the top of the tank 2. The air from the blower 9 is heated by the second heater 11 and then injected from the cleaning nozzle 3 through the first air supply path 31a, the circulation pipe 24 and the support member 13, while the second air supply path 31b. And it supplies to the washing tank 2 from the lower end part of the right and left jacket 12 through the jacket 12.

  An exhaust path 33 to the outside is connected to the upper part of the cleaning tank 2. A part of the exhaust from the exhaust path 33 is exhausted to the outside, and the remaining part is returned to the suction port of the blower 9 via the circulation path 34. In order to keep this return amount as desired, the exhaust passage 33 is provided with an orifice 35. Therefore, the exhaust from the cleaning tank 2 and new air (outside air) through the filter 36 are supplied to the blower 9. In other words, the air can be circulated between the cleaning tank 2 and the blower 9 while partially replacing the air. However, the exhaust from the cleaning tank 2 may be exhausted to the outside in addition to circulating while exchanging a part. In that case, the installation of the circulation path 34 and the orifice 35 is omitted.

  The cleaning device 1 may further include a heating tank 37. The heating tank 37 is used for preheating a liquid used in a later process. In the present embodiment, the heating tank 37 is provided in the upper part of the cleaning tank 2 (for example, directly above or above the cleaning tank 2) due to the installation space.

  Water is supplied to the heating tank 37 via a tank water supply path 38. The tank water supply path 38 is provided with a tank water supply valve 39, and the water supply to the heating tank 37 can be controlled by controlling the opening and closing of the tank water supply valve 39. In the present embodiment, the heating tank 37 is provided with a water level detector (not shown) so that at least a full water state (a water supply state up to a set water level) and an air water state can be detected. Based on the detection signal of the water level detector, the tank water supply valve 39 can be controlled to supply water to the heating tank 37 up to the set water level. The heating tank 37 is provided with an overflow path 40 that overflows water of a predetermined amount or more.

  A third heater 41 is provided in the heating tank 37. The third heater 41 is an electric heater in the illustrated example, but may be a steam heater in some cases. The liquid in the heating tank 37 can be heated to the set temperature by the third heater 41. Typically, hot water used in the decontamination process described below can be produced.

  The heating tank 37 and the washing tank 2 are connected by a hot water passage 42, and a hot water valve 43 is provided in the hot water passage 42. The hot water channel 42 is a common pipe line with the water supply channel 14 on the downstream side (the washing tank 2 side). By opening the hot water valve 43, hot water can be supplied from the heating tank 37 into the cleaning tank 2. Since the hot water heated in the heating tank 37 is sent to the liquid storage part 4 via the jacket 12 provided on the side wall of the cleaning tank 2, even if the door of the cleaning tank 2 is open, Is safe without splashing out of the washing tank 2.

  The cleaning tank 2 may further be provided with an ultrasonic transducer 44. In the present embodiment, ultrasonic transducers 44 are provided on the left and right inclined surfaces 2a of the lower wall of the cleaning tank 2, respectively.

  A first temperature sensor 45 is provided in the liquid storage part 4 (more specifically, in the box-shaped part 2b). By controlling the first heater 10 based on the temperature detected by the first temperature sensor 45 (in this embodiment, the steam supply valve 27 is controlled), the water stored in the liquid storage unit 4 and the liquid ejected from the cleaning nozzle 3 are thus controlled. The temperature can be adjusted.

  A second temperature sensor 46 is provided in the air supply path 31 from the blower 9 to the cleaning tank 2 on the downstream side of the installation position of the second heater 11. By controlling the second heater 11 based on the temperature detected by the second temperature sensor 46, the supply air temperature into the cleaning tank 2 can be adjusted.

  A third temperature sensor 47 is provided in the heating tank 37. By controlling the third heater 41 based on the temperature detected by the third temperature sensor 47, the stored water in the heating tank 37 can be adjusted to a desired temperature.

  The cleaning device 1 further includes a controller (not shown) as control means. Specifically, the water supply valve 16, the drain valve 19, the chemical pump 22, the circulation pump 23, the blower 9, the air supply valve 32, the tank water supply valve 39, the hot water valve 43, the first heater 10 (the steam supply valve 27), Second heater 11, third heater 41, ultrasonic transducer 44, liquid level detector of liquid reservoir 4, water level detector of heating tank 37, first temperature sensor 45, second temperature sensor 46, and third temperature sensor 47 etc. are connected to the controller. The controller then cleans or rinses the object to be cleaned in the cleaning tank 2 according to a predetermined procedure (program) as described below.

  Hereinafter, the operation of the cleaning device 1 of the present embodiment will be specifically described. In the initial state, the valves 16, 19, 32, 39, and 43 are closed, and the pumps 22 and 23, the heaters 10, 11, and 41, the blower 9, and the ultrasonic vibrator 44 are stopped. In this state, the object to be cleaned is accommodated in the cleaning tank 2, and the door of the cleaning tank 2 is closed in an airtight manner.

  The cleaning device 1 of the present embodiment executes a selected process among a pre-cleaning process, a cleaning process, an ultrasonic cleaning process, a rinsing process, a decontamination process, and a drying process. Which process is performed in what order (and how many times each process is performed) is set in the controller by the user prior to the start of operation. For example, a cleaning process (and / or an ultrasonic cleaning process) and a rinsing process are sequentially included and executed. Typically, after the pre-washing process is performed as desired, the washing process and the rinsing process are sequentially performed, and then the decontamination process is performed as necessary, and finally the drying process is performed. In any case, when the operation start is instructed by a predetermined operation start button, the controller sequentially executes the selected steps. Hereinafter, the specific content of each process is demonstrated.

≪Prewash process≫
The pre-washing step is a step of washing the object to be washed with water without adding a chemical solution. Specifically, first, the water supply valve 16 is opened to supply water to the liquid storage unit 4. When water is stored in the liquid storage unit 4 up to the set water level, it is detected by the liquid level detector and the water supply valve 16 is closed. Thereafter, the circulation pump 23 is operated to supply water from the liquid storage unit 4 to the cleaning nozzle 3 via the circulation pipe 24 and the support member 13, and while rotating the cleaning nozzle 3, the nozzle hole of the cleaning nozzle 3. Is sprayed onto the object to be cleaned. Thus, the object to be cleaned is cleaned with water sprayed from the upper and lower cleaning nozzles 3. The water sprayed from each cleaning nozzle 3 is returned to the liquid reservoir 4 below the cleaning tank 2. After circulating water for the set time, the circulation pump 23 is stopped. And the drain valve 19 is opened and it drains from the liquid storage part 4, and after draining is completed, the drain valve 19 is closed. In the pre-washing step, normal temperature water is circulated in the present embodiment, but in some cases, hot water heated to a predetermined temperature by the first heater 10 or the like may be circulated.

≪Cleaning process≫
The cleaning process is a process of cleaning the object to be cleaned with water (cleaning liquid) charged with a chemical liquid (detergent). The cleaning process is basically the same as the pre-cleaning process. Therefore, here, the difference between the cleaning process and the pre-cleaning process will be described. In the washing process, the chemical liquid pump 22 is operated after the water is stored in the liquid storage unit 4 to the set water level or during the storage, and the detergent is put into the stored water in the liquid storage unit 4. Furthermore, the 1st heater 10 is operated and the stored water in the liquid storage part 4 is heated to preset temperature (for example, 40 degreeC). However, the stored water in the liquid storage unit 4 may be heated to the set temperature while the circulation pump 23 is operated. Moreover, when the hot water of preset temperature can be supplied by the water supply path 14 or the hot water path 42, you may utilize the hot water. In any case, after preparing the cleaning liquid in the liquid storage unit 4, the circulation pump 23 is operated to clean the object to be cleaned with the cleaning liquid. During the circulation of the cleaning liquid, the first heater 10 is controlled based on the temperature detected by the first temperature sensor 45 to maintain the temperature of the cleaning liquid at the set temperature. After circulating the cleaning liquid for the set time, the circulation pump 23 is stopped. And the drain valve 19 is opened and it drains from the liquid storage part 4, and after draining is completed, the drain valve 19 is closed. Note that the cleaning process may be performed a plurality of times while changing (or not changing) the set temperature. At that time, each time the set temperature is changed, the cleaning liquid in the cleaning tank 2 may be replaced or may not be replaced. Moreover, although the example which heats cleaning liquid with the 1st heater 10 was shown here, you may abbreviate | omit heating of cleaning liquid depending on the case.

≪Ultrasonic cleaning process≫
The ultrasonic cleaning step is a step of ultrasonically cleaning the object to be cleaned. Specifically, first, the water supply valve 16 is opened to supply water into the cleaning tank 2. At this time, water is supplied into the cleaning tank 2 until the object to be cleaned in the cleaning tank 2 is submerged (that is, the object to be cleaned is immersed in the cleaning liquid). If the object to be cleaned in the cleaning tank 2 is submerged, it is not always necessary to supply water to the upper part in the cleaning tank 2. When water is stored in the washing tank 2 to a desired water level, it is detected by the liquid level detector and the water supply valve 16 is closed. Thereafter, the ultrasonic vibrator 44 is operated to ultrasonically clean the object to be cleaned. However, in some cases, the operation of the ultrasonic vibrator 44 may be started during water supply into the cleaning tank 2 (particularly after at least a part of the object to be cleaned is immersed). Further, during the ultrasonic cleaning, the circulation pump 23 may be operated to use water jet from the cleaning nozzle 3 together. The object to be cleaned disposed in the upper part of the cleaning tank 2 may be difficult to be subjected to ultrasonic waves in some cases and the cleaning effect may be diminished. However, the liquid from the cleaning nozzle 3 can be obtained by using jet cleaning from the cleaning nozzle 3 together. All the objects to be cleaned can be effectively cleaned by the injection of the water and the flow of the stored water. In the ultrasonic cleaning process, similarly to the cleaning process, a chemical solution may be mixed into the stored liquid, or the stored liquid may be heated to a desired temperature by the first heater 10. After performing ultrasonic cleaning for a set time, the ultrasonic vibrator 44 and the circulation pump 23 are stopped. And the drain valve 19 is opened, it drains from the washing tank 2 and the liquid storage part 4, and the drain valve 19 is closed after drainage completion.

≪Rinse process≫
The rinsing step is a step similar to the pre-washing step, in which water is stored in the liquid storage unit 4 and then the circulation pump 23 is operated to inject water from the cleaning nozzle 3 to rinse the object to be cleaned. is there. At this time, the stored water may be heated to the set temperature by the first heater 10. Moreover, you may throw a chemical | medical agent into stored water depending on the case. After circulating water for the set time, the circulation pump 23 is stopped. And the drain valve 19 is opened and it drains from the liquid storage part 4, and after draining is completed, the drain valve 19 is closed.

  In this embodiment, the rinsing process is repeated a set number of times (at least once). Specifically, a set of water supply by the water supply means 5, circulation of a set time by the circulation means 8, and drainage by the drainage means 6 is repeated a set number of times (for example, twice).

≪Decontamination process≫
The decontamination process is basically the same as the prewash process, but the water temperature is different. In the decontamination process, the circulating water is hot water (high-temperature water of 80 ° C. or more and less than 100 ° C.). The hot water may be heated by the first heater 10, but if hot water is prepared in the heating tank 37 in advance and hot water is supplied from the heating tank 37 instead of the water supply from the water supply path 14, the operation is performed. Time can be shortened. In the decontamination process, a first temperature sensor 45 is provided on the outlet side of the circulation pump 23 so that the temperature of the liquid sprayed onto the object to be cleaned can be reliably maintained at the disinfection temperature, and the first temperature sensor 45 is based on the temperature. The heater 10 may be controlled. In addition, after a decontamination process, you may perform a finishing process if desired. The finishing process is the same as the cleaning process except that a lubricating rust inhibitor and / or a drying accelerator is used instead of the detergent.

≪Drying process≫
The drying step is a step of drying the object to be cleaned with hot air. Specifically, the air blower 9 may be operated and the air supply valve 32 may be opened. Moreover, hot air can be sent into the cleaning tank 2 by operating the second heater 11. At this time, the temperature of the hot air can be maintained at a predetermined temperature by controlling the second heater 11 based on the temperature detected by the second temperature sensor 46. Hot air from the blower 9 is jetted from the nozzle hole of the cleaning nozzle 3 while rotating the cleaning nozzle 3 through the first air supply path 31 a, the circulation pipe 24 and the support member 13. In parallel with this, hot air from the blower 9 is supplied to the bottom of the cleaning tank 2 via the second air supply path 31 b and the jacket 12. These hot air is led out from the exhaust passage 33 at the upper part of the cleaning tank 2 and is circulated by the blower 9 while replacing a part thereof as described above.

  That is, by operating the blower 9 and the second heater 11, hot air can be circulated in the cleaning tank 2, and at this time, a part of the circulating air is discharged to the outside through the orifice 35, while being passed through the filter 36. Then, a part of the circulating air is gradually replaced by taking new air into the blower 9. The inside of the cleaning tank 2 can be maintained at a relative humidity suitable for drying by discharging the moisture-containing air to the outside and taking in the new air to make up the discharged air.

  As described above, the hot air heated by the second heater 11 from the blower 9 is not only jetted from the cleaning nozzle 3 via the circulation pipe 24 and the support member 13, but also the cleaning tank 2 via the jacket 12. It is also supplied to the lower part. The hot air thus supplied is led out to the exhaust path 33 at the upper part of the cleaning tank 2. Compared with the case where hot air is supplied from the lower part of the cleaning tank 2 via the jacket 12 and the hot air discharge port is provided at the upper part of the cleaning tank 2, the hot air is supplied only from the cleaning nozzle 3. Hot air can be passed through the entire tank 2, and the object to be cleaned can be dried quickly and reliably. Further, the supply air flow rate through the cleaning nozzle 3 may be sufficient to dry the inside of the cleaning nozzle 3, and the supply air flow rate through the jacket 12 can be main, so that the pressure loss of the piping can be reduced, and the blower 9 can be miniaturized.

  The cleaning device 1 of the present invention is not limited to the configuration (including control) of the above-described embodiment, and can be changed as appropriate. In particular, a cleaning tank 2 in which an object to be cleaned is accommodated, a cleaning nozzle 3 for injecting a liquid to the object to be cleaned in the cleaning tank 2, a liquid storage unit 4 connected to a lower part in the cleaning tank 2, Water supply means 5 to the liquid storage section 4, drainage means 6 from the liquid storage section 4, first heater 10 for heating the liquid in the liquid storage section 4, and circulation supply of the liquid in the liquid storage section 4 to the cleaning nozzle 3 The first heater 10 is a means for heating the wall of the box-shaped part 2b that opens upward that constitutes the liquid storage part 4 from the outside, and other configurations can be changed as appropriate. It is.

  For example, in the said Example, although the 1st heater 10 comprised from the steam jacket 10A, you may comprise from an electric heater. In that case, for example, sheet-like electric heaters may be provided on the front and rear of the box-shaped part 2b that opens upward and on the left and right side walls and the bottom wall. In that case, a sheet-like heater may be affixed on the outer surface of each side wall and bottom wall of the box-shaped part 2b, or may be embedded in each wall constituting the box-shaped part 2b. Or the 1st heater 10 is good also as a coil-shaped electric heater or steam heater provided so that the outer peripheral part of the box-shaped part 2b may be surrounded. In the case of a steam heater, the outer periphery of the box-shaped part 2b is surrounded by a coiled steam pipe, and steam may be introduced into the steam pipe in the same manner as the steam jacket of the above embodiment.

  Moreover, in the said Example, although the 1st heater 10 made the heating surface the side wall on the front and back, right and left of the box-shaped part 2b, and a bottom wall, it can change suitably which surface is made into a heating surface. For example, the steam jacket 10A may be provided so as to surround only the front, rear, left and right side walls of the box-shaped portion 2b.

  Moreover, in the said Example, the heating tank 37 and the ultrasonic transducer | vibrator 44 are omissible depending on the case.

  Furthermore, in the said Example, although the to-be-cleaned object was taken in / out with respect to the net shelf in the washing tank 2, a washing rack can be taken in / out in the washing tank 2, and to-be-cleaned object can be accommodated in the net shelf of the washing rack Also good. In that case, the cleaning nozzles (particularly the cleaning nozzles other than the uppermost and / or lowermost cleaning nozzles) 3 provided in a plurality of upper and lower stages are provided in the cleaning rack. As in the above-described embodiment, the cleaning rack is provided with arm-shaped support members 13 in a plurality of upper and lower stages on one side, and the cleaning nozzle 3 is rotatably held by each support member 13. Then, in a state where the cleaning rack is accommodated in the cleaning tank 2, the fluid from the circulation pump 23 (or the air from the blower 9) can be supplied to the cleaning nozzle 3 of the cleaning rack, and the fluid to the support member 13 on the cleaning rack side The supply port and the fluid discharge port of the piping from the circulation pump 23 on the cleaning tank 2 side are detachably connected. Note that the cleaning rack may have a wagon shape with a caster at the lower end. In the embodiment, one or both of the cleaning nozzles 3 provided at the upper and lower end portions in the cleaning tank 2 may be provided on the cleaning tank 2 side instead of being provided in the cleaning rack.

1 Washer 2 Washing tank (2b: Box-shaped part)
DESCRIPTION OF SYMBOLS 3 Washing nozzle 4 Liquid storage part 5 Water supply means 6 Drainage means 7 Chemical solution supply means 8 Circulation means 9 Blower 10 First heater (10A: Steam jacket)

Claims (3)

A cleaning tank in which the object to be cleaned is accommodated, a cleaning nozzle for injecting liquid to the object to be cleaned in the cleaning tank, a liquid reservoir connected to the lower part in the cleaning tank, and water supply to the liquid reservoir Means, draining means from the liquid storage part, a heater for heating the liquid in the liquid storage part, and circulation means for circulatingly supplying the liquid in the liquid storage part to the cleaning nozzle,
The said heater is a means to heat the wall of the box-shaped part opened upwards which comprises the said liquid storage part from the outer side. The heater is a steam jacket provided so as to surround the front and rear and left and right side walls and the bottom wall of the box-shaped portion opened upward,
The cleaning device according to claim 1, wherein the liquid in the liquid storage section is heated by supplying steam into the steam jacket. The washer according to claim 2, wherein unevenness is provided on each of the side walls and the bottom wall.

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