JP3392636B2 - washing machine - Google Patents

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 a structure such as an instrument cleaning machine described in JP-A-62-282683 (B08B11 / 00).

That is, in this instrument washer, a washing nozzle for injecting washing water into the instrument is arranged in a washing chamber for accommodating the instrument such as a flask and a test tube, and the washing nozzle is provided in a casing surrounding the washing chamber. A cleaning pump for supplying water to the cleaning nozzle is arranged below the cleaning chamber. Further, a detergent storage box for storing detergent is provided in the middle of a supply path for supplying hot water or water serving as cleaning water or rinse water into the cleaning chamber, such as a water supply pipe or a hot water supply pipe.

There is one in which the above-mentioned detergent storage box is provided on one side wall of the cleaning chamber, and the configuration thereof is shown in FIG.

The detergent storage box 55 is fixed to the side wall of the cleaning chamber 56, and the entire box is in a state of being projected into the cleaning chamber 56. Further, the detergent storage box 55 is opened from the front side facing the inside of the washing chamber 56 to the side face facing the loading opening side (front side) of the dishes into the washing chamber, and the detergent container containing the detergent is placed in the detergent storage box. A detergent input port 57 for entering the inside of 55 is formed. The detergent inlet 57 is covered with an inlet cover 58. The input port cover 58 is rotatably supported by a hinge 59 at a side end located at the back of the cleaning chamber 56, and is opened laterally.

An elbow type water supply nozzle 60 is attached to the upper part of the rear surface of the detergent storage box 55 from the outside of the cleaning chamber 56. A water supply hose 61 is connected to the connection port 60 a of the water supply nozzle 60, and a water supply port 62 is formed on the lower surface of the tip portion 60 b of the water supply nozzle 60 protruding into the detergent storage box 55. Then, the detergent container 63 described above is stored under the water supply port 62.

Thus, in the process in which a treatment agent such as detergent is required, when water is supplied from the water supply nozzle 60, the inlet cover 58 is opened by the force of the flowing water, and the detergent in the detergent container 63 and the water in the cleaning chamber 56. Is flushed to.

[0008]

However, in the above-mentioned equipment washing machine, the detergent is poured out together with water from the detergent feeding port of the detergent by the water supply action, and the detergent can be easily fed. In addition, since the detergent inlet is provided up to the surface of the detergent storage box facing the instrument inlet side, if the detergent storage box is too close to the instrument inlet,
When the door of the cleaning chamber was opened during water supply, there was a risk that water containing the detergent that had flowed out from the detergent inlet would leak out from the inlet of the device. Normally, considering the safety, the water supply is stopped when the door is opened, but even if the water supply is stopped, there is a time lag, so the outflow from the detergent storage box does not stop suddenly, so There is fear.

Therefore, if the detergent storage box is arranged in the back of the cleaning chamber in consideration of the above, there arises a problem that it is difficult to put the detergent into the detergent storage box.

The present invention relates to a washing machine and solves such problems.

[0011]

According to a first aspect of the present invention, there is provided a cleaning machine for cleaning a tool to be cleaned by using a cleaning chamber containing the tool to be cleaned and water stored in the bottom of the cleaning chamber. A cleaning device, an inlet for the cleaning target provided on the front of the cleaning chamber,
A door that opens and closes the input port, a storage chamber for the detergent fixed to the upper wall or side wall near the input port in the cleaning chamber, and is connected to the storage chamber, and water is supplied into the cleaning chamber through the storage chamber. A water supply pipe, a detergent input port provided on the surface of the storage chamber facing the input port side, and the detergent input port,
A lid that is opened when the detergent is supplied and is closed when water is supplied to prevent water from flowing out from the detergent supply port, and water supplied to the storage chamber that is provided on the surface of the storage chamber facing the detergent supply port. And a detergent supply port through which the detergent in the storage chamber flows out into the cleaning chamber.

That is, in this structure, since the detergent storage chamber is arranged in the vicinity of the loading port of the article to be cleaned, and the detergent loading port faces the loading port side of the article to be cleaned, the detergent loading operation into the storage chamber is performed. Easy to peel. In addition, a detergent supply port is provided on the side opposite to the detergent supply port, and when supplying water, the detergent supply port is closed by the lid, and the water (cold water or hot water) supplied to the storage chamber is supplied to the detergent supply port. Since the water is poured into the washing chamber together with the detergent, the water containing the detergent does not leak out through the inlet of the article to be cleaned even if the door of the washing chamber is opened.

According to a second aspect of the present invention, in the washing machine according to the first aspect, the lid is slid back and forth to open and close the detergent inlet, and the back side of the lid is provided. When a shelf for placing a detergent to be taken into and out of the accommodation chamber is provided along the bottom wall of the accommodation chamber, and the detergent input port is closed by the lid to completely store the shelf in the accommodation chamber. The rear end of the mounting shelf is configured to project from the detergent supply port.

That is, in this structure, the lid is slid toward the front side to pull out the placing shelf from the accommodating chamber, the detergent is placed on the placing shelf, and then the lid is returned to place the placing shelf in the accommodating chamber. Since the detergent can be put into the storage chamber by storing it, the work of putting the detergent into the storage chamber is easy. Moreover, since the rear end of the placing shelf is made to project from the detergent supply port when the placing shelf is completely housed in the storage chamber, the water containing the detergent will not contact the placing shelf and the bottom wall of the storage chamber. It is hard to get into the space, and it is hard for detergent to accumulate during this period.

According to a third aspect of the present invention, in the washing machine according to the first aspect, the lid is slid forward and backward to open and close the detergent inlet, and the back side of the lid is provided. A loading rack for the detergent to be taken in and out of the loading chamber along the bottom wall of the loading chamber, and this loading rack is placed from the detergent loading port side to the detergent loading port side so that the cleaning agent feeding port side becomes lower. The structure is inclined toward.

That is, in this structure, the water supplied to the storage chamber smoothly flows into the detergent supply port together with the detergent. In addition, since it becomes difficult for the detergent to flow into the detergent inlet, it is possible to prevent the water containing the detergent from flowing out from the detergent inlet even if the lid is not so tightly closed.

According to a fourth aspect of the present invention, in the washing machine according to any one of the first to third aspects, a second water supply pipe for supplying water into the washing chamber without passing through the storage chamber, and a preliminary washing before the washing process. A water supply control device is provided for supplying water from the second water supply pipe during water supply during the stroke, and for supplying water through the water supply pipe during water supply during the cleaning process.

That is, with this configuration, the detergent can be reliably introduced into the cleaning chamber during the cleaning process without introducing the detergent into the cleaning chamber during the preliminary cleaning process.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a dishwasher of an embodiment of the washing machine of the present invention, 2 is a machine frame made of metal, and 3 is a cleaning chamber for resin molded products arranged in the machine frame 2. Is.

Reference numeral 4 denotes a tableware inlet provided on the front surface of the washing chamber 3, and a tableware basket (not shown) for storing the tableware.
Is stored in the cleaning room 3 from here. 5 is this inlet 4
It is a door that opens and closes, and the lower end is pivotally supported. The lower end opens as a fulcrum.

Reference numeral 6 is an operation panel provided below the door 5. Reference numeral 7 denotes a control box attached to the back surface of the operation panel 6, in which electrical components such as a microcomputer, which is the center of the control mechanism of the dishwasher 1, are stored.

Reference numeral 8 is a nozzle tower provided substantially in the center of the bottom of the cleaning chamber 3, and reference numeral 9 is a long nozzle body rotatably supported in the horizontal direction by the nozzle tower 8.
A plurality of injection ports 10 ... Are formed on the upper surface of the nozzle body 9. In addition, a propulsion injection port (not shown) is provided on both sides of one tip of the nozzle body 9, and the propulsion jet is provided inside the nozzle body 9 every time the rotation of the nozzle body 9 is stopped. A reversing mechanism (not shown) including a ball valve or the like for closing and changing one of the injection ports is provided. Then, the nozzle body 9 is rotated in the reverse direction by this reversing mechanism.

Reference numeral 11 is a cleaning pump arranged at the outer bottom of the cleaning chamber 3, and water (cold water or hot water) stored in the bottom of the cleaning chamber 3 to serve as cleaning water or rinse water is passed through the nozzle tower 8. It is sent to the nozzle body 9.

Thus, at the time of washing and rinsing, the washing pump 11 operates to circulate the washing water (rinsing water) and jet the washing water from the nozzle body 9 toward the tableware above. The nozzle tower 8, the nozzle body 9 and the cleaning pump 11 constitute the cleaning device of the present invention.

Reference numeral 12 denotes a drain tank which is formed at the front part of the bottom surface of the cleaning chamber 3 and is connected to the cleaning pump 11. Reference numeral 13 is a filter provided above the drainage tank 12 for collecting debris such as leftovers dropped from tableware.

Reference numeral 14 denotes a drain pump connected to the drain tank 12 for draining the water in the cleaning chamber 3 to the outside of the machine via a drain hose 15.

Reference numeral 16 denotes a loop-shaped sheathed heater which is provided from near the center of the bottom of the cleaning chamber 3 to the rear, heats the water in the cleaning chamber 3 during cleaning, and raises the temperature in the cleaning chamber 3 during drying. , Enhances the cleaning / drying effect.

Reference numeral 17 denotes a water level detection chamber which is provided in the lower rear portion of the cleaning chamber 3 and communicates with the cleaning chamber 3, and a float (not shown) is arranged inside. The water level in the cleaning chamber 3 is detected by the vertical movement of the float.

Denoted at 18 is a detergent charging device attached to the upper wall of the cleaning chamber 3 in the vicinity of the charging port 4. The detergent previously charged into the cleaning device 3 is introduced into the cleaning chamber 3 by utilizing the flow force of water. It is something to throw in. The detergent charging device 18 will be described in detail later.

Reference numeral 19 is a water supply pipe connected to the detergent charging device 18, and 20 is a second water supply pipe connected to the water level detection chamber 17. These water supply pipes 19 and 20 are two-way water supply valve device 2 having two electromagnetic water supply valves corresponding to each water supply pipe.
1 (corresponding to the water supply control device of the present invention),
The dual water supply valve device 21 is connected to an external water supply source such as water supply or an external hot water supply source such as a water heater. The dual water supply valve device 21 supplies water from the second water supply pipe 20 when supplying water in the preliminary cleaning process, and supplies water from the water supply pipe 19 when supplying water in the cleaning process. The water supplied from the water supply pipe 19 flows into the cleaning chamber 3 through the detergent feeding device 18, and the water supplied from the second water supply pipe 20 flows into the cleaning chamber 3 through the water level detection chamber 17.

Reference numeral 22 denotes a circulating air blower provided at the rear of the cleaning chamber 3, which has a blower fan and a dehumidifier inside, and takes in the moist air in the cleaning chamber 3 during drying and dehumidifies it. The air is circulated by returning it to the cleaning chamber 3. The tableware is dried by being introduced into the washing room 3 and being heated by the heater 16 to apply air to the tableware.

Now, the detergent charging device 18, which is a feature of the present invention, will be described in detail with reference to FIGS. 2 and 3.

A box-shaped storage chamber 23 has a front surface (a surface facing the inlet 3) which is fully opened as a detergent inlet 24 and a rear surface (a surface which faces the detergent inlet 24) is a detergent supply port 25. It is open, leaving the upper part a little. The upper wall of the storage chamber 23 is fixed to the upper wall of the cleaning chamber 3. A water supply port 26 connected to the water supply pipe 19 is formed at a front position of the upper wall of the storage chamber 23. The upper wall of the cleaning chamber 3 is provided with a hole into which the water supply port 26 is inserted, and the water supply port 26 is connected to a water supply pipe on the back side of the upper wall.

Reference numeral 27 is a lid for closing the detergent inlet 24. The lid 27 slides back and forth to open and close the detergent inlet 24. The lower end of the lid 27 has the accommodation chamber 3
Is extended downward from the bottom, and the extending portion 27a serves as a handle portion when the lid 27 is slid.

On the back side of the lid 27, the accommodation chamber 23
A shelf 28 for placing the detergent in and out of the storage chamber 23 is provided along the bottom wall of the. The depth of the loading shelf 28 is such that when the detergent loading port 24 is closed by the lid 27 and the loading shelf 28 is completely housed in the storage chamber 23, the rear end portion of the loading shelf 28. Has a length protruding from the detergent supply port 25. Further, the mounting shelf 28 is attached to the lid 27 so as to incline from the detergent input port 24 side toward the detergent supply port 25 side, and the detergent supply port 25 side is lowered.

When carrying out the washing operation using the dishwasher having the above construction, first, the door 5 is opened to store the dishes. Next, the detergent is put into the detergent feeding device 18. That is, the lid 27 is slid forward to pull out the placing shelf 28 from the storage chamber 23, and after placing the detergent on the placing shelf 28,
The lid 27 is returned and the mounting shelf 28 is housed in the housing chamber 23.
Thus, when the detergent is completely added, the door 5 is closed and the washing operation is started.

In the cleaning process, water is supplied into the cleaning chamber 3 via the detergent charging device 18. Water flows into the accommodation chamber 23 from the water supply port 26 through the water supply pipe 19. The water that has flowed in flows backward along the placing shelf 28, flows out from the detergent supply port 25 into the cleaning chamber 3, and the detergent placed on the placing shelf 28 also flows out into the cleaning chamber 3. Thus
Detergent is put into the cleaning chamber 3.

At this time, since the rear end portion of the mounting shelf 28 projects rearward from the detergent supply port 25, water containing detergent is unlikely to enter between the mounting shelf 28 and the bottom wall of the storage chamber 23. . For this reason, the detergent does not easily accumulate between the placing shelf 28 and the bottom wall of the storage chamber 23, and the placing shelf 28 is not easily pulled out.

Further, since the mounting shelf 28 is inclined so that the detergent supply port 25 side becomes lower, the water supplied into the storage chamber 23 flows smoothly into the detergent supply port 25 together with the detergent. Moreover, since it becomes difficult to flow toward the detergent input port 24 side, it is possible to prevent the water containing the detergent from flowing out from the detergent input port 24, even if the lid 27 is not so strongly closed.

When the door 5 is opened to add tableware to the water supply, the water supply is automatically stopped. But,
Since it takes some time to detect the opening of the door 5 and close the valve of the double water supply valve device 21 to completely stop the water supply, the outflow of water from the storage chamber 23 does not stop suddenly.

With this dishwasher configuration, when water is supplied,
Since the detergent input port 24 is closed by the lid 27 and the water containing the detergent is poured into the cleaning chamber 3 from the detergent supply port 25 provided on the side opposite to the detergent input port 24,
The water containing the detergent does not leak out through the tableware inlet 4.

Next, another embodiment of the detergent charging device 18 is shown in FIG. In the second embodiment, the guide ribs 28a are provided upright along the both sides of the mounting shelf 28 so that water does not flow laterally and smoothly flows to the detergent supply port 25 on the rear side. Further, a recess 28b for placing the detergent is provided on the portion of the mounting shelf 28 located downstream of the water supply port 26 so that the detergent can be placed on the recess 28b so that the detergent can be easily placed and the water supply port 26 The water that flows in from the outlet surely hits the detergent so that the detergent can flow.

In this embodiment, the detergent charging device 18 is fixed to the upper wall of the cleaning chamber 3, but it may be fixed to the side wall. Further, although the dishwasher is described as an example, the washing machine of the present invention may be an instrument washing machine.

[0045]

According to the washing machine of claim 1 of the present invention,
The detergent storage chamber is arranged in the vicinity of the loading port of the article to be cleaned, and since the detergent loading port faces the loading port side of the tool to be washed, it is easy to load the detergent into the storage chamber. In addition, a detergent supply port is provided on the side opposite to the detergent input port,
At the time of water supply, the lid closes the detergent inlet, and the water (cold water or hot water) supplied to the storage chamber is made to flow out from the detergent supply port into the washing chamber together with the detergent. Even if it is opened, the water containing the detergent does not leak out from the inlet of the item to be cleaned.

In the washing machine according to the second aspect of the present invention, the lid is slid toward the front to draw out the placing shelf from the storage chamber, the detergent is placed on the placing shelf, and then the lid is returned. Since the detergent can be put into the storage chamber by storing the placing shelf in the storage chamber, the work of putting the detergent into the storage chamber is easy. Moreover, since the rear end of the placing shelf is made to project from the detergent supply port when the placing shelf is completely housed in the storage chamber, the water containing the detergent will not contact the placing shelf and the bottom wall of the storage chamber. It is hard to get into the space, and it is hard for detergent to accumulate during this period. Therefore, it is possible to prevent the detergent from sticking to the storage shelf and hindering it from being taken in and out.

In the washing machine according to the third aspect of the present invention, since the mounting shelf is inclined so that the detergent supply port side is lowered, the water supplied to the storage chamber smoothly flows together with the detergent. Since it becomes difficult to flow to the detergent input port side while flowing into, it is possible to prevent the water containing the detergent from flowing out from the detergent input port even if the lid is not so tightly closed.

In the washing machine according to the fourth aspect of the present invention, the detergent is not put into the washing chamber in the preliminary washing step,
Detergent can be reliably put into the washing chamber during the washing process.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a configuration of a dishwasher which is an embodiment of the present invention.

FIG. 2 is a side sectional view showing a structure of a detergent feeding device.

FIG. 3 is a front cross-sectional view showing the structure of a detergent feeding device.

FIG. 4 is a front sectional view showing another structure of the detergent feeding device.

FIG. 5 is a perspective view showing a structure of a conventional detergent feeding device.

[Explanation of symbols]

3 washing room 4 slot 5 doors 8 nozzle tower (cleaning device) 9 Nozzle body (cleaning device) 11 Cleaning pump (cleaning device) 19 water pipe 21 2 consecutive water supply valve device (water supply control device) 23 accommodation room 24 Detergent input port 25 Detergent supply port 27 Lid 28 mounting shelves

Front Page Continuation (72) Inventor Kenji Yamane 2-5-5 Keihan Hon-dori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (56) Bibliography Sho 55-19551 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A47L 15/00-15/44 D06F 39/02

Claims (4)

(57) [Claims] 1. A cleaning chamber for accommodating an article to be cleaned, a cleaning device for cleaning the article to be cleaned using water stored in the bottom of the cleaning chamber, and an article to be cleaned provided in front of the cleaning chamber. An input port, a door that covers the input port in an openable and closable manner, and a detergent storage chamber fixed to an upper wall or a side wall near the input port in the cleaning chamber,
A water supply pipe connected to this storage chamber for supplying water to the cleaning chamber through the storage chamber, a detergent inlet provided on the surface of the storage chamber facing the inlet, and a detergent inlet provided in the detergent inlet. The lid is opened at the time of introducing the detergent and is closed at the time of supplying water to prevent the water from flowing out from the detergent introducing port, and is provided on the surface of the accommodation chamber facing the detergent introducing port and supplied to the accommodation chamber. A washing machine comprising: a detergent supply port through which the detergent in the storage chamber flows out into the washing chamber together with water. 2. The shelves for placing detergent into and out of the storage chamber along the bottom wall of the storage chamber on the back side of the cover while the cover slides back and forth to open and close the detergent inlet. And a rear end portion of the placing shelf is projected from the detergent supply port when the placing shelf is completely housed in the storage chamber by closing the detergent feeding port with the lid. The washing machine according to 1. 3. The shelf on which the lid is slid back and forth to open and close the detergent inlet, and on the back side of the lid, a detergent loading shelf to be put in and taken out of the storage chamber along the bottom wall of the storage chamber. 2. The washing machine according to claim 1, wherein the mounting shelf is tilted from the detergent input port side toward the detergent supply port side such that the detergent supply port side is lowered. 4. A second water supply pipe for supplying water into the cleaning chamber without passing through the storage chamber, and a water supply from the second water supply pipe during water supply in a pre-cleaning process before the cleaning process, and the water supply during water supply in the cleaning process. The washing machine according to any one of claims 1 to 3, further comprising a water supply control device for supplying water from a pipe.