JPH0928651A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the attaching/detaching operation of a waterproof cover, in the washing machine provided with a controller arranged in the lower part of the washing tank and with a waterproof cover covering this controller from above, in the repair of the controller or the maintenance. SOLUTION: Hinges 47 are attached between the front part of a storage case 38 and that of a placing base 39. These hinges 47 are attached to both two places, fixing the storage case 38 on the placing base 39 so that the case 38 may be only turnable forward on the front bottom side 38a as a fulcrum. With the control box 37 placed on the placing base 39, the storage case 38 and the waterproof cover 40 are fixed on the placing base 39 with screws 51 as is the rear side of the control box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer for mainly washing containers such as a washer for washing dishes and a washer for washing medical and laboratory instruments such as flasks and test tubes.

[0002]

2. Description of the Related Art Conventionally, as one of the general structures of this type of cleaning machine, there is, for example, the structure of an instrument cleaning machine described in Japanese Patent Laid-Open No. 62-282683.

That is, in this equipment cleaning machine, a cleaning nozzle for injecting cleaning water into the equipment is arranged in a cleaning tank for containing equipment such as a flask and a test tube, and it is in a casing surrounding the cleaning tank. Under the cleaning tank, a load such as a cleaning pump for supplying water to the cleaning nozzle and a drainage pump for discharging the cleaning water in the cleaning tank to the outside of the machine are arranged.

The control unit for controlling the drive of these loads is located below the front part of the cleaning tank and in front of the load in consideration of easiness of repair and maintenance of the control unit and downsizing of the equipment. It is located in the space. That is, the control unit is attached below the door and is attached to the back side of the front plate that covers the front surface of the housing.

By the way, since the control section is located under the cleaning tank, water may leak into the control section if water leaks from the tank. To prevent this, the control section must be covered with a cover. I won't However, in the case of the configuration in which the control unit is attached to the back side of the front plate as described above, the control unit is covered from the rear by using the box-shaped cover with the front opening, so that the top surface most likely to be splashed with water. There will be a seam between the front plate and the cover. Therefore, in this case, there arises a problem that water easily enters from the joint portion.

Therefore, the control unit is mounted on a mounting table provided on the bottom surface of the housing, and the control unit is covered from above by a box-shaped cover having an opening on the lower surface to prevent water from entering. It is possible to

[0007]

However, in the above structure, due to the relationship between the size of the control unit and the mounting space, there is sufficient space between the control unit mounted on the mounting table and the upper cleaning tank. If it cannot be obtained, the cover may not be attachable / detachable while the cleaning tank is obstructed and the control unit remains on the mounting table.

In such a case, at the time of repair or maintenance of the electrical components in the control unit, the control unit is pulled out to a position where the upper cleaning tank does not interfere with the attachment and detachment of the cover, and the cover is attached and detached. Must be done. Therefore, in a case where the control unit is large and the weight is considerably large because the control is complicated in a large-sized device, there arises a problem that the work of pulling out the control unit becomes difficult. In addition, there is a problem that the wiring connecting the control unit and the load such as the cleaning pump has to be lengthened as much as the control unit is pulled out.

The present invention relates to a washer such as a dish washer and an instrument washer, and solves such a problem.

[0010]

According to a first aspect of the present invention, there is provided a cleaning tank in which a cleaning nozzle is arranged, and various loads such as a cleaning pump and a drainage pump arranged below the cleaning tank. It is arranged below the front part of the cleaning tank and in front of the various loads, and is formed in a box shape with an opening and a storage case that houses electrical components such as a microcomputer for controlling the drive of the various loads. A cleaning machine comprising a control box including a cover for covering the storage case from above, a mounting table on which the control box is mounted, and a fixing member for fixing the control box on the mounting table. When the control box is rotated forward with the front side bottom portion as a fulcrum in a state where the fixing by the member is released, the control box is provided with a support member for supporting the bottom side portion so as not to move forward. .

According to a second aspect of the present invention, in the configuration of the first aspect, the hinge attached between the storage case and the mounting table is used as the supporting member.

According to a third aspect of the present invention, in the configuration of the second aspect, the fixing member acts on the rear side of the control box to fix the control box on the mounting table. is there.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the fixing member fixes the storage case and the cover together to the mounting table. .

[0014]

In order to remove the cover from the storage case when repairing or maintaining the electrical components in the control box, first, the fixing of the control box to the mounting table by the fixing member is released. At this time, when the storage case and the cover are both fixed to the mounting table by the fixing member, this also releases the fixing of the waterproof cover to the storage case.

However, even if an attempt is made to remove the cover upward in this state, if a sufficient space cannot be obtained between the cover and the upper cleaning tank, the cover will hit the upper cleaning tank and cannot be removed.

Then, the rear side of the control box is lifted and rotated forward with the bottom side of the front side as a fulcrum. At this time, the bottom part serving as a fulcrum is supported by a supporting member, for example, a hinge so as not to move forward, and can be easily rotated. Then, the control box is rotated to a position where it does not hit the cleaning tank even if the cover is removed upward, and the cover is removed from above the storage case at that position.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 is an instrument washer which is an embodiment of the washer of the present invention. The instrument washer 1 is for washing instruments such as flasks and test tubes for medical / experimental use.

Reference numeral 2 is a cleaning tank, the front surface of which is closed by a door 3 which can be opened and closed. Reference numeral 4 denotes a front opening-like casing that surrounds the cleaning tank 2, and 5 denotes a front face of the casing 4, which is attached to a position below the door 3 with screws (not shown). Is a front plate that covers the.

Reference numerals 6 and 7 are an upper rack and a lower rack which are housed in the upper and lower stages of the cleaning tank 2, respectively.
These racks are for storing flasks and test tubes to be washed.

Reference numeral 8 is an upper nozzle which is attached to the outer bottom of the upper rack 6 so as to be rotatable in the horizontal direction. The upper nozzle 8 has a plurality of jet ports on the upper surface and the lower surface, respectively, and sprays the washing water onto the instruments in the upper rack 6 and the lower rack 7. The number of ejection ports on the lower surface is half the number of ejection ports on the upper surface. The receiving port 9a of the upper nozzle shaft 9 which is a water shaft and a support shaft for the upper nozzle 8 has a water inlet 10a provided on the top surface of the tank when the upper rack 6 is stored at a predetermined position in the cleaning tank 2. Connected to.

Reference numeral 11 denotes a lower nozzle which is horizontally rotatably arranged at the bottom of the cleaning tank 2. The lower nozzle 11 has a plurality of jet ports on the upper surface, and sprays washing water onto the equipment in the lower rack 7. The lower nozzle 11 is attached to a lower nozzle shaft 12 that is a water pipe that also serves as a support shaft that is erected from the bottom of the cleaning tank 2.

The upper nozzle 8 and the lower nozzle 11
Corresponds to the cleaning nozzle of the present invention. 13 is a water reservoir formed on the bottom surface of the cleaning tank 2, and 14 is a filter provided at the inlet to the water reservoir 13. Reference numeral 15 denotes a cleaning pump, the suction port of which is connected to the bottom of the water reservoir 13 by a circulation pipe 16 and the discharge port of which is connected to the water supply port 10 and the lower nozzle shaft 12 by a water supply pipe 17.

Reference numeral 18 is a drainage pump connected to the bottom of the water reservoir 13. Reference numeral 19 is an overflow port opened at a predetermined height from the bottom of the cleaning tank 2, and 20 is an overflow pump connected to the overflow port 19. The drain pipes 21 and 22 connected to the discharge ports of the drain pump 18 and the overflow pump 20 are linked to a double check valve device 23, and the outlet of the double check valve device 23 is connected to an external drain hose. Be connected.

The drainage pump 18 operates during the drainage stroke and discharges the water in the cleaning tank 2 used for cleaning and rinsing to the outside of the machine. The overflow pump 20 operates during a water pouring rinsing process in which rinsing is performed while supplying water (hot water),
Water overflowing from the overflow port 19 is discharged to the outside of the machine.

Reference numeral 24 is a hot water supply detergent input box, and 25 is a water supply detergent input box. These input boxes are provided on the side surface of the cleaning tank 2, and include a detergent, a finishing agent, a disinfectant, a neutralizer, etc. It is for accommodating. 26, 27 and 28
Are a hot water supply port, a water supply port, and a pure water supply port provided on the rear surface of the cleaning tank 2, respectively.

Reference numeral 29 is a hot water supply pipe for supplying hot water to the detergent supply box 24 for hot water supply and the hot water supply port 26 from an external hot water supply source such as a water heater, and 30 is an electromagnetic hot water supply provided in the middle of the hot water supply pipe 29. It is a valve. This electromagnetic hot water supply valve 30 supplies hot water from the detergent supply box 24 for hot water supply into the cleaning tank 2 or the hot water supply port 2
It is for switching between supplying hot water from the cleaning tank 2 to the cleaning tank 2 or stopping hot water supply. The hot water supplied to the hot water supply detergent supply box 24 is washed with the detergent and the like in the cleaning tank 2
Is supplied in.

Reference numeral 31 is a water supply pipe for supplying water to the detergent supply box 25 for water supply and the water supply port 27 from an external water supply source such as a water supply, and 32 is an electromagnetic water supply valve provided in the middle of the water supply pipe 31. Is. The electromagnetic water supply valve 32 supplies water from the detergent supply box 25 for water supply into the cleaning tank 2 or the water supply port 27.
To switch between supplying water into the cleaning tank 2 or stopping water supply. The water supplied to the detergent feed box 25 for water supply is supplied into the cleaning tank 2 together with the detergent and the like.

33 is a pure water supply pipe for supplying pure water to the pure water supply port 28, and 34 is an electromagnetic supply valve provided in the middle of the supply pipe 33. This electromagnetic supply valve 34 is
The purpose is to switch between supplying pure water into the cleaning tank 2 and stopping the supply.

Reference numeral 35a designates the steam generated during the operation of the cleaning tank 2
In order to discharge from the inside, an exhaust port provided on the rear surface of the cleaning tank 2, and an exhaust duct 35 for guiding the steam exhausted from the exhaust port 35a to the outside of the machine.

Reference numeral 36 is a hose for a siphon breaker which connects the downstream side of the check valve in the double check valve device 23 and the upper portion of the exhaust duct 35.

Reference numeral 37 is a control box disposed below the front part of the cleaning tank 2 and in front of the load such as the cleaning pump 15 and the drainage pump 18. The control box 37 is mounted on a mounting table 39 attached to the bottom surface of the housing 4. The control box 37 includes a storage case 38 for storing electrical components, and a box-shaped waterproof cover (corresponding to the cover of the present application) having an open lower surface, which covers the storage case 38 from above. The waterproof cover 40 is for preventing water from entering the storage case 38 should water leak from the cleaning tank 2.

As shown in FIG. 2, the storage case 38 stores electrical components such as a printed circuit board 41 on which small electronic components such as a microcomputer are mounted, a power transformer 42, a relay 43, and a noise filter 44. These electrical components are for controlling driving of loads such as the cleaning pump 15 and the drainage pump 18. Further, the storage case 38 has a shape in which a front surface and an upper surface are opened so that the electrical component can be easily stored. Further, flanges 45, 45 are formed from the bottoms of both sides of the storage case 38, and screw holes 46 are formed on the rear side of the flanges 45, 45.
(Only one side is shown) is formed.

Reference numeral 47 is a hinge serving as a supporting member of the present invention, which is mounted between the front portion of the storage case 38 and the front portion of the mounting table 39. The hinges 47 are provided at two locations on both sides, and the storage case 38 has a bottom portion 38 on the front side.
Only forward rotation is possible with a as the fulcrum,
The storage case 38 is fixed to the mounting table 39.

Flange 48, 48 is formed from the bottom of both sides of the waterproof cover 40. These flanges 48, 48 are flanges 45, 4 of the storage case 38 when the waterproof cover 40 is completely covered with the storage case 38.
Overlay on 5. In the flanges 48, 48, screw holes 49 (only one side is shown) are also formed at positions corresponding to the screw holes 46 formed in the flanges 45, 45 of the storage case 38.

Further, the top surface of the waterproof cover 40 is inclined so that the front is lowered. On the rear side of the control box 37, there are many wirings (not shown) connecting the load such as the cleaning pump 15 and the control box 37.
The water that leaks from the front of the water and falls on the top surface of the waterproof cover 40 does not flow to the rear side but to the front side where there is nothing, so that the wiring is not affected by the water.

Further, the lower end 40a of the front surface of the waterproof cover 40 extends further below the lower end of the side surface, that is, the flanges 48, 48. This makes the waterproof cover
When the storage case 38 is completely covered with 40, the lower end 40a of the front surface of the waterproof cover 40 is located below the bottom surface of the storage case 38. That is, when the lower end of the front surface of the waterproof cover 40 is equal to or higher than the bottom surface of the storage case 38, the waterproof cover 40 flows forward along the slope of the top surface of the waterproof cover 40 and travels along the front surface to reach the lower end. The incoming water may enter the storage case 38 from the open front surface, but since the lower end 40a of the front surface is made lower than the bottom surface of the storage case 38 here, the water transmitted to the lower end is stored in the storage case. Do not invade into 38.

Reference numeral 50 denotes the mounting surface of the mounting table 39,
Screw holes 46 in the storage case 38 and the waterproof cover 40,
It is a locking hole which is provided corresponding to 49 and stops the screw 51 (second fixing member) penetrating both screw holes 46 and 49. On the rear side of the control box 37, with the control box 37 mounted on the mounting portion 39, the storage case 38 is secured by the screw 51.
And the waterproof cover 40 are both fixed to the mounting table 39.

The control box 37 is fixed by a front hinge 47 so as to be only rotatable forward.
The screw 51 on the rear side is fixed in a state in which the forward rotation is blocked. That is, it is fixed in all directions by the hinge 47 and the screw 51.

Now, with the control box 37 mounted on the mounting table 39, the waterproof cover 40 is moved upward in this state between the top surface of the waterproof cover 40 and the bottom surface of the cleaning tank 2 for storage. There is not enough space to remove it from the case 38 (see FIG. 1). That is, when attempting to remove the waterproof cover 40, the top surface of the waterproof cover 40 collides with the cleaning tank 2 before it is removed from the storage case 38. This is because if you take enough space for this removal,
This is because the size of the device body will increase accordingly. Therefore, when removing the waterproof cover 40, it is necessary to move the control box 37 so that the cleaning tank 2 does not get in the way and then remove the cover.

Therefore, according to the present invention, when the waterproof cover 40 is removed from or attached to the storage case 38 during repair or maintenance of the electrical components in the control box 37, the work of a service person is facilitated as described above. The waterproof cover 40 is attached and detached in the following manner.

To remove the waterproof cover 40 from the storage case 38, first, the front plate 5 is removed. Then, the screws 51 (two) on the rear side, which hold both the waterproof cover 40 and the storage case 38 to the mounting table 39, are removed. As a result, the fixing of the waterproof cover 40 is released, and the control box 38 can be rotated only forward.

Next, the control box 37 is attached to the bottom portion 38a on the front side.
With the fulcrum as a fulcrum, it is rotated forward to bring the waterproof cover 40 to a position where it does not hit the cleaning tank 2 even if it is moved upward. Thus, the waterproof cover 40 is removed from above (see FIG. 2).

On the contrary, the waterproof cover 40 is attached to the storage case 38.
To cover it, the above procedure can be performed in the reverse order.

It should be noted that the control box 38 is an obstacle when repairing or maintaining the load of the cleaning pump 15 or the like. In this case, the control box 38 should be pivoted and tilted to secure a working space. You can

As described above, in the instrument washer of the embodiment of the present invention,
When the screws 51 are removed to release the fixation of the control box 37 to the mounting table 39, the hinge 47 prevents the bottom portion 38a of the storage case 38, which serves as a fulcrum of the rotation of the control box 37, from moving forward. By supporting the control box 37 by simply lifting the rear side, the control box 37 can be rotated to a position where the upper cleaning tank 2 does not get in the way when the waterproof cover 40 is removed from the storage case 38. Since the waterproof cover 40 can be removed by rotating the control box 37, it is not necessary to lift the entire control box 37, and the amount of moving the control box 37 can be small. Therefore, the waterproof cover 40 can be removed during repair or maintenance. Can be done easily.

Moreover, since the amount of movement of the control box 37 is small, it is not necessary to lengthen the wiring between the control box 37 and the load such as the cleaning pump 15.

Further, since the hinges 47 are fixed except for the rotation direction, the control box 37 is firmly fixed on the mounting table 39 by stopping with screws 51 to the extent that the rotation can be blocked. Therefore, it is not necessary to use many screws 51. Therefore, in order to release the fixing of the control box 37 to the mounting table 39, a small amount of work such as removing a few screws is required, and the waterproof cover 40 is used.
Can be easily removed.

Further, since the screw 51 is stopped at the rear side opposite to the front side where the hinge 47 is attached, the control box 38 can be fixed uniformly.

Further, the storage case 38 is provided by the screw 51.
Since the waterproof cover 40 and the waterproof cover 40 are both fixed to the mounting table 39, the fixing of the control box 37 to the mounting table 39 can be released at the same time by removing the screw 51.
Since the fixing to the storage case 38 can be released, the work of removing the waterproof cover 40 becomes easier.

The supporting member in the present invention is the hinge 4
It is not necessary to prevent all the movements of the control box 37 other than the rotation direction as in 7, and at least a member that can prevent the bottom portion 38 of the storage case 38 from moving forward.

Further, the washing machine of the present invention is not limited to the instrument washing machine, and may be a dish washing machine.

[0053]

According to the configuration of the first aspect of the washing machine of the present invention, the storage box serving as a fulcrum of the rotation of the control box when the fixing of the control box to the mounting table by the fixing member is released. The bottom part of the control box is supported by a support member so that it does not move forward, so that the control box can easily rotate by simply lifting the rear side, and the upper cleaning tank interferes when removing the cover from the storage case. Since the cover can be removed by rotating the control box to the position where it does not become necessary, it is not necessary to lift the entire control box and the amount of moving the control box can be small, so it is necessary to remove the cover during repair and maintenance. Can be done easily.

Moreover, since the amount of movement of the control box is small, it is not necessary to lengthen the wiring between the control box and the load such as the washing pump.

According to the second aspect of the present invention, the hinge is used as the support member to fix all parts except the direction of rotation, and the remaining parts can be prevented from rotating by using a fixing member such as a screw. Since the control box can be firmly fixed on the mounting table by stopping it to a certain degree, it is not necessary to firmly fix the control box by the fixing member. Therefore, in order to release the fixing of the control box to the mounting table, a small amount of work such as removing a few screws is sufficient, and the work of removing the cover can be facilitated.

Further, according to the structure of claim 3,
Since the fixing member is stopped on the rear side opposite to the front side where the hinge is attached, the control box can be fixed uniformly.

Further, according to the structure of claim 4,
Since the storage case and the cover are both fixed to the mounting table by the fixing member, the fixing of the control box to the mounting table can be released at the same time by releasing the fixing by the fixing member. Since the fixing of can be released, the work of removing the cover becomes easier.

[Brief description of drawings]

FIG. 1 is a side cross-sectional view showing a configuration of an instrument washer that is an embodiment of a washer of the present invention.

FIG. 2 is a perspective view of a main part showing a detailed configuration of a control box and a waterproof cover.

[Explanation of symbols]

 2 Cleaning Tank 4 Housing 8 Upper Nozzle (Washing Nozzle) 11 Lower Nozzle (Washing Nozzle) 15 Washing Pump 18 Drainage Pump 37 Control Box 38 Storage Case 39 Mounting Stand 40 Waterproof Cover 47 Hinge (Supporting Member) 51 Screw (Fixing Member)

Front page continued (72) Inventor Tetsuo Sakane 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takenari Yuki 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. A cleaning tank provided in a housing, in which a cleaning nozzle is arranged, various loads such as a cleaning pump and a drainage pump arranged below the cleaning tank, and below a front portion of the cleaning tank. There is a storage case that is arranged in front of the various loads and that stores electrical components such as a microcomputer for performing drive control of the various loads, and a cover that is formed in a box shape with an open bottom and covers the storage case from above. In a washing machine including a control box, a mounting table on which the control box is mounted, and a fixing member for fixing the control box at a predetermined position on the mounting table, the fixing by the fixing member is released. In this state, when the control box rotates forward with the front bottom part as a fulcrum,
A washing machine comprising a support member for supporting the bottom of the base so as not to move forward. 2. The washing machine according to claim 1, wherein the support member is a hinge attached between the storage case and the mounting table. 3. The fixing member acts on the rear side of the control box to fix the control box on the mounting table.
The washing machine described in. 4. The washing machine according to claim 1, wherein the fixing member fixes both the storage case and the cover to the mounting table.