JP3138188B2 - Structure of water supply channel in washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to tableware, test tubes,
The present invention relates to a structure of a water supply path in a washing machine for automatically washing test instruments such as a beaker and a flask.

[0002]

2. Description of the Related Art Conventionally, a washing machine has been used for automatically washing test utensils such as tableware, test tubes, beakers, and flasks. In order to wash test instruments with this washing machine, usually, used test instruments are placed on a dedicated wire mesh rack (hereinafter simply referred to as “rack”), and the rack on which the test instruments are placed is attached to the washing machine. Set in the washing tank and perform washing.

[0003] The cleaning tank is provided with a rotary nozzle, and the rotary nozzle is provided with a plurality of injection ports. The cleaning water containing the detergent stored in the cleaning tank is pumped by a pump and supplied to a rotary nozzle. As a result, the washing water is sprayed from the injection port toward the test device, whereby the test device can be cleaned. The water after washing is
After collecting at the bottom of the washing tank (called a water tank), it is pumped by a pump and used again for washing.

[0004] When rinsing the test equipment after washing, rinse water not containing detergent is supplied to the washing tank and stored in the water tank. The rinsing water stored in the water storage tank is supplied to the rotating nozzle and injected. As a result, the test equipment is rinsed with the jetted rinse water. The rinse water after rinsing accumulates in the water tank and is then pumped by the pump and used again for rinsing.

[0005]

In the above-mentioned washing machine, it is necessary to supply washing water and the like into the washing tank.
A water supply channel for this water supply is provided in the washing machine.
The water supply path is connected to a predetermined water supply member such as a water supply valve or a hot water supply valve, and supplies water or hot water supplied from the water supply member into the cleaning tank.

The conventional water supply channel is provided to prevent water leakage from the water supply channel itself and water leakage from a connection portion with the washing tank.
Many joint parts and packings are used. For this reason, the number of parts increases, the cost increases,
There is a problem that it takes time to assemble, and a problem that it takes time to inspect the water leak after assembling. Therefore, realization of a structure that can easily assemble this water supply channel has been desired.

Accordingly, the present invention relates to a washing machine for placing an object to be washed on a rack, setting the object in a washing tank, pumping washing water or the like accumulated in the washing tank with a pump, and jetting the washing water through a nozzle to wash the washing machine. It is another object of the present invention to realize a water supply channel structure that can easily configure a water supply channel for supplying cleaning water or the like into a cleaning tank.

[0008]

According to a first aspect of the present invention, there is provided a water supply passage in a washing machine, wherein a part of a water supply passage for supplying cleaning water or the like into a cleaning tank is provided. One end of the tube is connected to a predetermined water supply member, and a portion including the other end of the tube is inserted into a hole in the washing tank wall, and the tube is It is characterized in that it is liquid-tightly fixed to the cleaning tank wall by an integrated sealing body, and at the other end of the tube, an injection port for injecting cleaning water or the like into the cleaning tank is formed. I do.

The "predetermined water supply member" may be any member that supplies cleaning water or the like to the water supply passage, such as a water supply valve or a water supply hose. According to the above configuration, the cleaning water or the like supplied from the predetermined water supply member is injected into the cleaning tank from the injection port through the pipe. At this time, since the sealing body integrated with the pipe is fixed to the cleaning tank wall in a liquid-tight manner, water leakage from a hole in the cleaning tank wall is prevented.

According to a second aspect of the present invention, the structure of the water supply passage in the washer is the structure of the water supply passage in the washer according to the first aspect, wherein the sealing body is formed with an opposed flange integrally formed with a pipe. It is characterized by being. With this configuration, the tube can be fitted into the hole in the cleaning tank wall with one touch. Moreover, the opposed flange integrated with the pipe body is made of a flexible material, and the washing tank wall is sandwiched and fixed by the opposed flange. It comes into perfect engagement. Therefore, "liquid-tight fixation" can be performed without complicated preparation, and packing is not required.

According to a third aspect of the present invention, the structure of the water supply passage in the washing machine is the same as the structure of the water supply passage in the washing machine according to the first or second embodiment. Characterized in that it is oriented in the direction along. With this structure, the cleaning water or the like is sprayed from the injection port of the tubular body in a direction along the cleaning tank wall, so that the cleaning water or the like is not directly applied to the object to be cleaned.

Further, the washing water or the like flowing through the pipe body is subjected to considerable resistance since the course of the washing water is bent and exits the injection port oriented in the direction along the washing tank wall. Therefore, when applied to the structure of claim 2, the water pressure in the pipe can be further increased, and the liquid-tight effect is improved.

[0013]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic perspective view showing the external configuration of the utensil washer. This apparatus cleaning machine is for cleaning test apparatuses such as a test tube, a beaker, and a flask. An openable and closable door 2 is attached to an upper front part of the cabinet 1. Inside the door 2 is formed a washing tank for accommodating test instruments.

A latch 3 for operating the door 2 when the door 2 is opened is provided at an upper portion of the door 2. Latch 3
Functions as a stopper when closing the door 2 that has been opened, and also functions as a door switch that detects opening and closing of the door 2. A display panel 4 is provided on the left side of the center of the door 2. As described later, the display panel 4
Various indicators are arranged. On the right side of the display panel 4, an operation panel 5 is provided. The operation panel 5 is provided with various operation keys for inputting operation signals as described later. Further, a power switch SW is provided on the right side of the operation panel 5.

A transparent glass window 6 is provided below the door 2 so that the inside of the utensil washer can be observed from the outside. A service hatch 7 that can be opened and closed is attached to a lower portion of the front surface of the cabinet 1. The service hatch 7 is opened when a serviceman or the like performs maintenance or repair of the utensil washer.

On the right side surface of the cabinet 1, an earth leakage breaker 8 and a power supply 9 for exclusive use of a pure water pressurizing device are provided.
The power supply 9 dedicated to the pure water pressurizing device is a power supply necessary for operating the pure water pressurizing device including the pure water pump for pumping the pure water from the pure water tank. FIG. 2 is a schematic perspective view showing the utensil washer in a state where a door 2 is removed and a part of a right side surface is partially cut away, mainly for explaining a configuration inside the cleaning tank.

In the utensil washer of this embodiment, an upper rack UR and a lower rack DR for placing test utensils to be cleaned are used. Each of the racks UR and DR is configured as a net-like container for injecting washing water or the like toward the placed test instrument. Test equipment in upper rack U
When mounted on the R or the lower rack DR, the test equipment is mounted such that the portion to be cleaned faces downward. This is because washing water or rinsing water is sprayed upward from below the upper rack UR or the lower rack DR, as described later.

A rail 21a for holding the upper rack for setting the upper rack UR to the cleaning tank 20 is attached to the upper left inner wall of the cleaning tank 20. Although not shown, a similar upper rack holding rail is also attached to the right inner wall facing the upper rack holding rail 21a. A rail 22a for holding the lower rack for setting the lower rack DR to the cleaning tank 20 is attached to the lower left inner wall of the cleaning tank 20. Although not shown, a similar lower rack holding rail is also attached to the right inner wall facing the lower rack holding rail 22a.

When cleaning the test equipment, the user places the test equipment on the upper rack UR or the lower rack DR, and places the upper rack UR or the lower rack DR on the upper rack holding rail 21a or the lower rack holding, respectively. On the rail 22a for use. At the lower part of the upper rack UR, an upper nozzle 23 for injecting washing water or the like upward to the test instruments mounted on the upper rack UR is provided.
It is mounted rotatably with respect to. On the upper surface of the upper nozzle 23, a plurality of upper injection ports 23a are arranged.
A plurality of lower injection ports (not shown) are arranged on the lower surface of 3, and a propulsion injection port (not shown) is arranged on one side of the tip of the upper nozzle 23. This propulsion jet is
This is for rotating the upper nozzle 23 in one direction A by the water pressure of the jetted water.

An upper water supply shaft 24 is attached to the upper nozzle 23. When the upper rack UR is set in the cleaning tank 20, the water supply shaft 24 comes into contact with a supply port 25 attached to the ceiling of the cleaning tank 20. The supply port 25 is connected to a second supply pipe described later. Therefore, when the washing water or the like is supplied from the second supply pipe to the supply port 25, if the upper rack UR is set on the rail 21a for holding the upper rack, the washing water or the like flows through the upper nozzle via the water supply shaft 24. 23, the upper injection port 23a
And upward from the lower outlet. As a result, the upper rack UR
Cleaning water or the like can be sprayed on the test instruments mounted on the lower rack DR, and washing or the like can be sprayed from above on the test instruments mounted on the lower rack DR.

In the lower part of the washing tank 20, a lower nozzle 26 for spraying washing water or the like from below onto test instruments mounted on the lower rack DR is rotatably supported. A plurality of upper injection ports 26a are arranged on the upper surface of the lower nozzle 26, and propulsion injection ports (not shown) are arranged on one side surface of the tip of the lower nozzle 26. The propulsion injection port is for rotating the lower nozzle 26 in one direction B by the water pressure of the water to be injected. Lower nozzle 2
Cleaning water to be sprayed from 6 is supplied from a first supply pipe described later. When washing water or the like is supplied from the first supply pipe to the lower nozzle 26, the washing water or the like is jetted upward from the upper jet port 26a. Therefore, the lower rack D
Rinsing water or the like can be sprayed on the test instrument placed on R.

FIG. 3 is a view for mainly explaining a mechanism for supplying the washing water or the like of the utensil washer. Note that FIG.
Shows a case where both the upper rack UR and the lower rack DR are set in the cleaning tank 20. Cleaning tank 2
0, a water supply port 30, a water supply port 31, and a pure water port 32
Are formed with the injection port facing downward. A hot water supply pipe 33 connected to a hot water supply pipe (not shown) is connected to the hot water supply port 30. A hot water supply valve 34 is interposed in the hot water supply pipe 33. When the hot water supply valve 34 is turned on, the hot water travels along the inner wall of the cleaning tank 20 via the hot water supply pipe 33 and the hot water supply port 30 and is stored in the cleaning tank 20.

A first detergent supply pipe 35 branches off from the middle of the hot water supply pipe 33 via a first detergent valve 37. A first detergent supply port 36 is connected to a forward portion of the first detergent supply pipe 35. The first detergent inlet 36 is a space formed on the inner wall of the washing tank 20 and for introducing a detergent for washing the test instrument. When the hot water supply valve 34 is turned off and the first detergent valve 37 is turned on, hot water is supplied to the first detergent inlet 36 through the hot water supply pipe 33 and the first detergent supply pipe 35. As a result, the detergent and the warm water are mixed at the first detergent inlet 36, and the washing water is produced. The created washing water is transmitted along the inner wall of the washing tank 20 to the water tank 27.
It is stored in.

A water supply port 31 provided on the inner wall of the washing tank 20
Is connected to a water supply pipe 38 connected to a water supply pipe (not shown). The water supply pipe 38 is provided with a water supply valve 39. In this configuration, when the water supply valve 39 is turned on, water exits from the water supply port 31 via the water supply pipe 38, travels along the inner wall of the cleaning tank 20, and is stored in the water storage tank 27.

A second detergent supply pipe 40 branches off from the water supply pipe 38 via a second detergent valve 42. A second detergent supply port 41 is connected to a forward portion of the second detergent supply pipe 40. The second detergent inlet 41 is a space formed on the inner wall of the washing tank 20 and in which the detergent is injected, similarly to the first detergent inlet 36. When the water supply valve 39 is turned off and the second detergent valve 42 is turned on, water is supplied to the second detergent inlet 41 via the water supply pipe 38 and the second detergent supply pipe 40. As a result, in the same manner as described above, cleaning water is produced at the second detergent inlet 41, and the produced cleaning water travels along the inner wall of the cleaning tank 20 and is stored in the water storage tank 27.

A pure water supply pipe 43 connected to a pure water pressurizing device (not shown) is connected to the pure water port 32. The pure water supply pipe 43 is provided with a pure water valve 44. In this configuration, when the pure water valve 44 is turned on, the pure water travels along the inner wall of the cleaning tank 20 via the pure water supply pipe 44 and is stored in the water storage tank 2.
Stored in 7. In this embodiment, the water storage tank 27 can store about 9 liters of washing water and the like. The water storage tank 27 is provided with a water temperature detection thermistor 50 for detecting the temperature of the washing water or the like stored in the water storage tank 27. The water tank 27 also includes a loop heater 51.
Is provided. The heater 51 is provided so that the utensil washer can be installed in a place where a hot water supply pipe is not provided. In other words, it is sometimes preferable to use hot water to wash the test equipment. Therefore, when only normal-temperature water can be supplied to the washing tank 20,
This is because the water needs to be heated by the heater 51.

A drain 52 is formed at the bottom of the water storage tank 27. One end of an outlet pipe 54 is connected to the drain 52 via a filter 53 for removing dirt. The other end of the outflow pipe 54 is branched and connected to the inlet side of the circulation pump 55 and the inlet side of the drainage pump 56. A water level detection device 58 is connected to the other end of the outflow pipe 54 via a float pipe 57. Water level detector 58
Is for detecting the water level of the washing water or the like stored in the water storage tank 27. Details will be described later.

A first supply pipe 59 and a second supply pipe 60 are connected to the discharge side of the circulation pump 55. The first supply pipe 59 is connected to the lower nozzle 26 supported by the water storage tank 27. The second supply pipe 60 is connected to the supply port 25 attached to the upper wall of the cleaning tank 20. In this configuration, when the circulation pump 55 is turned on, the outflow pipe 5
The washing water and the like flowing out of the circulation pump 55 are sucked into the circulation pump 55 and are discharged from the discharge side of the circulation pump 55 to the first supply pipe 59 and the second supply pipe 60. As a result, the washing water and the like are jetted upward from the upper jet port 26a (see FIG. 2) of the lower nozzle 26, and are jetted vertically from the upper jet port 23a and the lower jet port of the upper nozzle 23, respectively.

A drain pipe 61 extending outside the machine is connected to the discharge side of the discharge pump 56. The drain pipe 61 is provided with a check valve 62. The check valve 62 is for preventing overflow water drained from a second overflow pipe described later from flowing back to the drain pipe 61. In this configuration, when the drainage pump 56 is turned on, the washing water and the like flowing out of the outflow pipe 54 are discharged.
And drained out of the machine via a drain pipe 61.

A first overflow pipe 63 is provided outside the cleaning tank 20. First overflow pipe 63
Is for draining out of the washing tank 20 washing water or the like having a predetermined overflow water level or higher among washing water and the like stored in the water storage tank 27 in an overflow rinsing process described later. One end of the first overflow pipe 63 enters the water storage tank 27 from the bottom of the water storage tank 27, and forms an intake port 64 at a height corresponding to the overflow water level. The other end of the first overflow pipe 63 is connected to the inlet side of the overflow pump 65. One end of a second overflow pipe 66 is connected to the discharge side of the overflow pump 65. The other end of the second overflow pipe 66 is connected to the drain pipe 61 via a check valve 62.

In this configuration, when the overflow pump 65 is turned on, washing water or the like above the overflow level in the water storage tank 27 is sucked into the overflow pump 65 via the first overflow pipe 63, and the second overflow pipe 66 and The water is drained out of the machine via the drain pipe 61. An exhaust duct 67 is further attached to the upper part of the cleaning tank 20. The exhaust duct 67 is for exhausting hot and humid air inside the cleaning tank 20 to the outside of the cleaning tank 20. From the exhaust duct 67, a check valve 62 in which a siphon breaker hose 68 is interposed in the drain pipe 61 is provided.
Has been extended. Hose 68 for siphon breaker
Is to prevent excessive drainage from occurring through the drain pipe 61 and the overflow pipe 66 due to the so-called siphon phenomenon.

FIG. 4 is a block diagram showing a configuration of an electric control circuit of the utensil washer. The control circuit includes a microcomputer 200 as a control center. The microcomputer 200 receives signals from various switches and sensors. Microcomputer 2
At 00, control signals are output to various elements and devices based on the given signals.

Specifically, in response to pressing of various keys provided on the operation panel 5, corresponding key switches 201
Are supplied to the microcomputer 200. The outputs of the water temperature detection thermistor 50, the door switch (latch) 3, the specified water level switch 58i, and the overflow water level switch 58h are given to the microcomputer 200.

The microcomputer 200 gives a segment signal to the remaining time display 4a and the temperature display 4b provided on the display panel 4 based on the above-mentioned input signals. At the same time, the remaining time indicator 4a and the temperature indicator 4
b and a control signal to the stroke display lamp 4c. In addition, a light emitting diode (LED) output is given to the stroke display lamp 4c.

The microcomputer 200 also provides control signals to the hot water supply valve 34, the water supply valve 39, the first detergent valve 37, the second detergent valve 42, and the pure water valve 44, respectively. Thus, the opening and closing of each valve is controlled.
Further, control signals are given to the overflow pump 65, the drain pump 56, the pure water pump 202, and the circulation pump 55, respectively. Thus, the suction operation of each pump is controlled. The microcomputer 200 further supplies control signals to the heater 51 and the buzzer 203, respectively.

FIG. 5 shows a hot water supply port 30 protruding from the inner wall 20a of the cleaning tank 20, and the hot water supply port 30 and the hot water supply valve 34.
And a water supply port 31 protruding from the inner wall 20a of the washing tank 20,
FIG. 4 is a perspective view of a main part showing a mounting state of a water supply hose 31a connecting the water supply port 31 and a water supply valve 39. Although a pure water hose connecting the pure water port 32 and the pure water valve 44 is also used, the hot water supply hose 30a, the water supply hose 3
Since it has the same structure as 1a, it is not shown for simplicity.

Hot water supply hose 30a and water supply hose 31a
Since both have the same structure, the hot water supply hose 30
This will be described with reference to a. The hot water supply hose 30a is integrally formed of rubber or flexible resin, and has two 90 ° bent portions. The water intake end is directly connected to the outlet of the hot water supply valve 34, and the water discharge end has a wall 30d as shown in the cross section in FIG. 6, and an injection port 30b for discharging hot water is formed near the wall 30d. The hot water supplied from the hot water supply valve 34 passes through the inside of the hot water supply hose 30a to reach the water discharge end, where it hits the wall 30d, is bent sideways, is jetted from the jet port 30b, and is jetted from the jet port 30b.
a to be stored in the cleaning tank 20.

Here, the reason why the test piece is bent laterally and ejected from the injection port 30b will be explained. Usually, a large amount of test equipment is mounted on the rack. As a result, the test instruments may fall down and not be sufficiently cleaned, or the test instruments may come into strong contact with each other and be damaged.In addition, when cleaning with hot water, This is because direct contact with warm water may cause a high-temperature damage such as cloudiness due to a rapid rise in temperature.

The inner wall 20a of the cleaning tank 20 is provided with a through hole 20b through which a hot water supply hose 30a is passed. At an intermediate portion of the hot water supply hose 30a, an opposed hole for fixing the hot water supply hose 30a through the through hole 20b is provided. A flange portion 30c is formed. Therefore, by sandwiching the front and rear of the through hole 20b with the facing flange portion 30c, the hot water supply hose 30a
Can be fixed to the inner wall 20a of the cleaning tank 20.

The wall 30d of the hot water supply hose 30a, the opposed flange portion 30c, the portion bent at 90 °, and the mounting end to the hot water supply valve 34 are all integrally formed with the main body of the hot water supply hose 30a. There is no need to use many fitting parts or packings to prevent water leakage,
The water supply path is completed if the water supply channel is attached to the cleaning tank wall 20a with one touch. In addition, due to the integration, water leakage inspection after assembly is not required in principle.

When the hot water supply valve 34 is opened, water pressure is applied to the hot water supply hose 30a.
0a is flexible, so the facing flange portion 30c
Is expanded (see the arrow in FIG. 6), and the washing tank 20 is expanded.
Is more tightly engaged with the inner wall 20a. Therefore, the effect of preventing water leakage such as washing water can be further enhanced. In particular, since the end of the hot water supply hose 30a is the wall 30d, there is an effect of blocking the water flow, whereby the water pressure inside the hose is increased, and the water leakage prevention effect can be further enhanced.

The embodiments of the present invention are not limited to those described above. In the embodiment,
Although the description has been given by taking as an example a utensil washer for cleaning test utensils as a cleaning machine, the present invention can be widely applied to other cleaning machines such as a dishwasher for cleaning tableware, for example. Can be. In addition, various design changes can be made within the scope described in the claims.

[0043]

As described above, according to the structure of the water supply channel in the washing machine according to the first aspect, the flexible pipe integrated with the sealing body is liquid-tightly fixed to the washing tank wall. Along with
Cleaning water or the like can be guided and injected into the cleaning tank from the injection port. Therefore, it is not necessary to use many joint parts, packings, and the like for preventing water leakage, and the number of parts is reduced, and mounting on the washing tank wall becomes easy. In addition, due to the integration, water leakage inspection after assembly is not required in principle.

According to the structure of the water supply channel in the washing machine according to the second aspect of the present invention, the pipe can be fitted into the hole of the washing tank wall with one touch, so that the pipe can be easily mounted on the washing tank wall. In addition, since the opposing flange is engaged with the hole in the cleaning tank wall using the water pressure, the effect of preventing water leakage can be further enhanced. According to the structure of the water supply channel in the washing machine according to the third aspect, the washing water or the like is sprayed from the injection port of the pipe in the direction along the washing tank wall, so that the washing water or the like is sprayed on the object to be washed. The tableware and test utensils placed on the rack are not knocked down or damaged by the force of the jet. Further, for example, when using high-temperature hot water, it is also possible to prevent the object to be cleaned from being directly exposed to hot water, thereby avoiding an obstacle due to a sudden high temperature. In particular, when applied to the structure described in claim 2, the water pressure in the pipe can be further increased, and the effect of preventing water leakage due to the opposed flange can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an external configuration of an apparatus washer according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing the utensil washer in a state where a door is removed and a part of a right side surface is partially cut away, mainly for explaining a configuration of a washing tank.

FIG. 3 is a diagram for mainly explaining a water channel configuration of the utensil washer.

FIG. 4 is a block diagram showing a configuration of an electric control circuit of the utensil washer.

FIG. 5 is a perspective view of a main part showing a mounting state of a hot water supply hose on an inner wall of the cleaning tank.

FIG. 6 is a cross-sectional view of a hot water supply hose attached to an inner wall of the cleaning tank.

[Explanation of symbols]

 Reference Signs List 20 cleaning tank 20b through hole 27 water storage tank 30a hot water supply hose (tube) 30b injection port 30c opposed flange 31a water supply hose (tube) 34 hot water supply valve 39 water supply valve

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tetsuo Sakane 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takenari Yuki 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (56) References JP-A-4-314413 (JP, A) JP-A-5-146389 (JP, A) JP-A 4-80471 (JP, U) JP-A Sho-56 -48358 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B08B 3/00-3/14 A47L 15/42

Claims (3)

(57) [Claims] 1. A washing machine for placing an object to be washed on a rack, setting the object in a washing tank, pumping washing water or the like accumulated in the washing tank with a pump, and spraying the same with a nozzle to wash.
Part of the water supply channel for supplying cleaning water etc. into the cleaning tank,
One end of this tube is connected to a predetermined water supply member, and a portion including the other end of the tube is inserted into a hole in the washing tank wall,
The sealing member integrated with the pipe body is liquid-tightly fixed to the wall of the cleaning tank, and the other end of the pipe body has an injection port for spraying cleaning water or the like into the cleaning tank. The structure of the water supply channel in the washing machine, characterized in that: 2. The structure of a water supply passage in a washing machine according to claim 1, wherein said sealing body is an opposed flange formed integrally with said tube. 3. The injection port at the other end of the pipe body is oriented in a direction along a cleaning tank wall.
Structure of the water supply channel in the washer described.