JP3234457B2 - Elastic packing applied to washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a dishwasher for washing dishes and a dishwasher for washing laboratory instruments such as test tubes, beakers, flasks and the like. The present invention relates to an elastic packing for sealing the gap so that washing water or the like used for washing or the like does not leak out of the machine from a gap with a water storage tank.

[0002]

2. Description of the Related Art Conventionally, there have been dishwashers for washing dishes, and dishwashers for washing laboratory instruments such as test tubes, beakers, flasks, and the like. Used. Among these, the utensil washing machine is provided with a washing room and a door for opening and closing the washing room. A rotary nozzle is provided in the cleaning chamber. A plurality of injection ports are formed in the nozzle. A water tank is also provided in the cleaning chamber. Specifically, the water storage tank is provided such that one side of the edge portion faces one side of the door.

When cleaning laboratory equipment, first, the laboratory equipment is mounted on a dedicated rack, and the rack on which the laboratory equipment is mounted is set in the cleaning room. Thereafter, when the start of cleaning is instructed, the cleaning water is stored in the water tank, and the stored cleaning water is supplied to the nozzle. As a result, the washing water is sprayed from the nozzle toward the laboratory equipment. At this time, the nozzle rotates. This cleans the laboratory equipment.

[0004] By the way, at the time of cleaning, as described above, the cleaning water is sprayed while the nozzle rotates, so that the cleaning water and the like are scattered in the cleaning chamber. Therefore, an elastic packing is usually fitted in the gap between the door and the main body so that the washing water or the like does not leak out of the machine. this house,
The elastic packing for sealing the gap corresponding to the door attachment point is attached to the edge of the water storage tank facing the door attachment point (hereinafter referred to as “door side edge”).

[0005] Since the water storage tank is manufactured by pressing, the door side edge is constituted by a straight edge and a curved edge extending to both sides thereof. On the other hand, the elastic packing is made of rubber or the like, and is usually manufactured according to the size (width) of the water storage tank. In this case, if a long linear product is manufactured and attached to the door side edge, a gap is created between the elastic packing and the water storage tank at the curved edge of the door side edge, and the sealing is performed well. Can not. Therefore, in order to improve the sealing property, it is necessary to form a dedicated elastic packing according to the size of the water storage tank. Therefore, there was a problem that the cost was increased.

It is an object of the present invention to solve the above-mentioned technical problems and to provide an elastic packing capable of reliably sealing between a door and a water storage tank and reducing costs.

[0007]

According to a first aspect of the present invention, there is provided an elastic packing comprising: a cleaning chamber; a door for opening and closing the cleaning chamber; and a water tank provided in the cleaning chamber. Wherein the water tank is applied to a washer having a linear edge portion facing one side of the door and a curved edge portion extending on both sides thereof, and the water reservoir is provided with each of the door and the water reservoir. An elastic packing for preventing water leakage from between the edge and a linear packing that has a constant cross-sectional shape and is formed linearly long, and can be attached to the linear edge, and at both ends of the linear packing. Respectively, and including a curved packing shaped along the inner wall of the curved edge ,
The straight packing is located inside the straight edge,
When the door is closed, one side of the door is pressed
The packing body has a straight edge.
Puddle space formed by the part, door and packing body
Water holes are formed to guide the water that accumulates in the storage tank
It is characterized by having.

[0008] In this configuration, a linear packing according to the shape can be attached to the linear edge of the water storage tank. A curved packing formed into a shape along the inner wall of the curved edge can be connected to both ends of the straight packing. As described above, according to this configuration, the elastic packing corresponding to the shape of the water storage tank can be attached to the edge of the water storage tank, so that the space between the door and each edge of the water storage tank can be reliably sealed. Moreover, the elastic packing can be adjusted to the size of the water storage tank only by changing the length of the formed straight packing, so that it is not necessary to form a special elastic packing.

[0009]

[0010]

[0011] Further , since a water passage hole for guiding water accumulated in the water pool formed by the linear edge portion, the door and the packing body to the water storage tank is formed in the packing body, water is discharged from the space to the outside of the machine. Does not leak.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an external configuration of an appliance washer of one embodiment to which an elastic packing of the present invention is applied. This utensil washer
It is for cleaning laboratory equipment such as test tubes, beakers, flasks, etc., and its appearance is formed by a cabinet 1. A door 2 is attached to an upper front portion of the cabinet 1. The door 2 is for opening and closing a washing room described later.

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 opened door 2. In addition, the latch 3 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. Various displays are arranged on the display panel 4. On the right side of the display panel 4, an operation panel 5 is provided. Operation panel 5
Is provided with various operation keys for inputting operation signals. Further, a power switch SW is provided on the right side of the operation panel 5. The display panel 4, the operation panel 5, and the power switch SW are embedded inside the door 2. Details will be described later.

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 of the cabinet 1, an earth leakage breaker 8 and a power supply 9 for the pure water pressurizing device are provided. The power supply 9 dedicated to the pure water pressurizing device is a power source necessary for operating the pure water pressurizing device. The pure water pressurizing device includes a pure water pump for pumping pure water from a pure water tank when performing rinsing with pure water. FIG. 2 is a front view showing the internal configuration of the door 2, and FIG. The exterior shape of the door 2 includes a door outer plate 2a and a door inner plate 2b. An electrical panel 2c is attached to the door inner plate 2b. An electrical component 2d including a display panel 4, an operation panel 5, and a power switch SW is mounted on the electrical panel 2c.

As described above, in this embodiment, the electrical component 2 d is embedded in the door 2. Therefore, door 2
Has no lugs. Therefore, it looks very good. A heat insulating material 2e is interposed between the electrical equipment panel 2c excluding the glass window 6 and the door inner plate 2b. Insulation material 2e
Is for protecting mainly the electrical components 2d from the high temperature of the cleaning water used for cleaning in the cleaning chamber, and is made of, for example, foamed polyethylene. An air layer 2f is formed between the electrical component panel 2c and the heat insulating material 2e. The air layer 2f is for further dissipating the heat absorbed by the heat insulating material 2e. Thereby, the electrical component 2d can be reliably protected from heat. 2g is a lead wire for electrically connecting between the electrical component 2d and a control target means (not shown) such as a circulation means.

A projecting portion 2h projects from below the door inner plate 2b. The projecting portion 2h is, as described later, a door 2
At the time of closing the water tank. An L-shaped reinforcing metal fitting 2i is attached between the protrusion 2h and the door outer plate 2a. A steam packing 2j is provided above the reinforcing fitting 2i. Packing for steam 2
j is for preventing steam generated in the cleaning chamber from entering the inside of the door 2, and is made of, for example, foamed polyethylene.

FIG. 4 is a schematic perspective view showing the utensil washer in a state where the door 2 and a part of the right side surface are cut away. A washing room 20 is provided inside the utensil washer of this embodiment. An accommodation port 21 is formed in the upper front part of the cabinet 1. The accommodation port 21 is for accommodating laboratory equipment to be washed in the washing room 20. Door 2
Is mounted to be openable and closable with the lower edge 21a of the accommodation opening 21 as a fulcrum. Specifically, the door 2 is attached to the cabinet 1 by a door support 22 that connects between the cabinet 1 and the door 2.

A water storage tank 23 is provided below the washing chamber 20. Specifically, the water storage tank 23 is provided such that the upper peripheral edge 24 on the front side of the upper peripheral edge of the water storage tank 23 faces the lower edge 21 a of the storage port 21. Hereinafter, the upper peripheral edge 24 on the front side of the water storage tank 24 is referred to as a “door-side edge 24”. The water storage tank 23 is for storing cleaning water used when cleaning the laboratory equipment.

An elastic packing 25 is mounted on the door side edge 24. As will be described later, the elastic packing 25 functions as a sealing member so that cleaning water or the like injected in the cleaning chamber 20 does not leak out of the apparatus. That is, when the door 2 is changed from the open state shown to the closed state, the protrusion 2h of the door 2
Pressed to 5.

In the washing chamber 20, an upper rack UR and a lower rack DR can be set. Each rack UR, D
R is for placing the laboratory equipment to be cleaned. Each of the racks UR, DR is configured as a net-like container for injecting washing water or the like from the outside toward the mounted laboratory equipment, as described later. When placing the laboratory equipment on the upper rack UR or the lower rack DR, the laboratory equipment is mounted such that the portion to be cleaned faces downward. This is because the washing water is sprayed upward from below the upper rack UR or the lower rack DR as described later.

An upper rack holding portion 26a for setting the upper rack UR in the cleaning chamber 20 is attached to the upper left inner wall of the cleaning chamber 20. Although not shown,
A similar upper rack holding portion is also attached to the right inner wall facing the upper rack holding portion 26a. A lower rack holding portion 27 a for setting the lower rack DR in the cleaning chamber 20 is attached to the lower left inner wall of the cleaning chamber 20. Although not shown, the lower rack holding portion 2
A similar lower rack holding portion is also attached to the right inner wall facing 7a.

When washing the laboratory equipment, the user places the laboratory 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 part 26a or the lower rack holding part 27a, respectively. Set to. An upper nozzle 28 is provided below the upper rack UR.
Are rotatably mounted by a predetermined mounting member. The upper nozzle 28 is mainly for injecting washing water to the laboratory equipment mounted on the upper rack UR. Upper nozzle 2
On the upper surface of 8, a plurality of upper injection ports 28a are arranged. The upper nozzle 28 has a water supply shaft 29 facing upward.
Is installed. When the upper rack UR is set in the cleaning chamber 20, the water supply shaft 29 comes into contact with a supply port 30 attached to the upper wall of the cleaning chamber 20. The supply port 30 is connected to a supply pipe (not shown). Wash water stored in the water storage tank 23 can be supplied to the supply pipe by a predetermined circulation means (not shown).

According to this configuration, at the time of washing, the washing water is stored in the water storage tank 23 to a predetermined water level. Thereafter, the washing water stored in the water storage tank 23 is supplied to the supply pipe by the circulation means. At this time, if the upper rack UR is set in the upper rack holding portion 26a, the washing water is guided to the upper nozzle 28 via the water supply shaft 29, and is jetted upward from the upper jet port 28a. As a result, the washing water is sprayed on the laboratory equipment mounted on the upper rack UR. As a result, the laboratory equipment placed on the upper rack UR can be washed.

When the overflow rinsing step is started among the steps included in the washing step, the washing water is stored in the water storage tank 23 up to a predetermined overflow start water level. The overflow rinsing step is a step for rinsing the laboratory equipment while discharging dirt washed out of the laboratory equipment outside the machine. Specifically, in the overflow rinsing process, the washing tank 23 is supplied with washing water appropriately.
Of the washing water stored in the chamber, the washing water having a predetermined overflow drainage level or more is appropriately drained, and the laboratory equipment is rinsed.

The upper nozzle 28 is rotatably mounted on the upper rack UR so as to rotate in the rotation direction A. According to this configuration, when the cleaning water is injected from the upper injection port 28a, the upper nozzle 28
Is rotated along the rotation direction A by the water pressure of the washing water supplied to the cleaning device. More specifically, a rotary injection port (not shown) is formed on the side surface on the front side of the left end portion of the upper nozzle 28 and on the side surface on the other side of the right end portion of the upper nozzle 28, respectively. . When the cleaning water is supplied to the upper nozzle 28, the cleaning water is injected from the rotation injection port. As a result, a rotational force along the rotational direction A is applied to the upper nozzle 28. As a result, the washing water can be uniformly sprayed on the laboratory instruments mounted on the upper rack UR.

The upper nozzle 28 is also provided with a plurality of injection ports (not shown) on the lower surface thereof. This jet is
This is for mainly cleaning the outside of the laboratory equipment placed on the lower rack DR. A lower nozzle 31 is provided at a lower portion of the cleaning chamber 20. The lower nozzle 31 is for injecting cleaning water to the laboratory equipment mounted on the lower rack DR. On the upper surface of the lower nozzle 31, a plurality of lower injection ports 31a are arranged. Wash water to be sprayed from the lower nozzle 31 is supplied from a supply pipe (not shown).
Wash water stored in the water storage tank 23 can be supplied to the supply pipe by a predetermined circulation means (not shown).

According to this configuration, at the time of washing, the washing water is stored in the water storage tank 23 up to the specified water level as described above, and the washing water is supplied to the supply pipe by the circulation means. As a result, the cleaning water is injected upward from the lower injection port 31a. At this time, if the lower rack DR is set in the lower rack holding portion 27a, the washing water can be sprayed on the laboratory equipment mounted on the lower rack DR.

In the case of the overflow rinsing process, the washing water stored up to the overflow start water level is supplied to the supply pipe and supplied to the lower nozzle 31 in the same manner as described above, and the laboratory equipment is rinsed. The lower nozzle 31 is rotatably supported by a water storage tank 27 provided below the cleaning chamber 20 so as to rotate in the rotation direction B. In this configuration, the lower nozzle 31 rotates in the rotation direction B due to the water pressure of the cleaning water supplied to the lower nozzle 31 when the cleaning water is being injected from the lower nozzle 31a. More specifically, a rotary injection port (not shown) is formed on the side surface on the front side of the left end portion of the lower nozzle 31 and on the side surface on the other side of the right end portion of the lower nozzle 31. . When the cleaning water is supplied to the lower nozzle 31, the cleaning water is injected from the rotation injection port. As a result, a rotational force in the rotational direction B is applied to the lower nozzle 31. At this time, the lower rack D is
If R is set, the washing water can be uniformly sprayed on the laboratory instruments mounted on the lower rack DR.

FIG. 5A shows the door side edge 24 of the water storage tank 23.
FIG. 5B is an exploded perspective view for specifically explaining the configuration of the water storage tank 23 and the elastic packing 25. FIG. The water tank 23
It is manufactured by press working. Therefore, FIG.
, (B), the corner of the water storage tank 23 is curved. Therefore, the door side edge 24 of the water storage tank 23 has a straight edge 40 and two ends extending to both ends of the straight edge 40.
It is composed of two curved edges 41.

As shown in FIG. 5B, the elastic packing 25 includes a straight packing 42 and two curved packings 43.
Is included. The straight packing 42 includes a grip 42a.
And a linear packing body 42b. The linear packing 42 is manufactured by, for example, an extrusion molding technique, in which the grip section 42a and the linear packing main body 42b are integrally formed into a linear shape with a constant cross section. Therefore, the length in the length direction of the straight packing 42 can be freely changed. Therefore, when the linear packing 42 is provided to the water tanks 23 of various sizes, the linear packing 42 can be easily manufactured.

The grip portion 42a is provided on the straight edge portion 4 of the water storage tank 23.
0 is to be gripped. With this configuration, the straight packing 42 can be attached to the straight edge 40. When the door is closed, the straight packing body 42b presses the protruding portion 2h (see FIG. 3) of the door 2 with its central portion pressed.
It is for holding. That is, the linear packing 4
It plays a central role in the function of the second seal member. A through hole 44 is formed in the straight packing body 42b along the length direction. That is, the linear packing body 42b has a hollow structure. With this configuration, the linear packing main body 42b has a larger elastic force as compared with the case of a solid structure.

A fitting insertion portion 45 is formed in the straight packing body 42b. The metal fitting insertion portion 45 is for inserting a holding metal fitting as described later. The curved packing 43 includes the fitting portion 43a and the curved packing body 4.
3b, and is manufactured by integrally molding the fitting portion 43a and the curved packing body 43b by, for example, a direct pressure molding technique. The fitting portion 43a has a shape that can be fitted into the through hole 44 formed in the straight packing 42. A part of the curved packing body 43b has a curved edge portion 4.
1 along the inner wall. Curved packing body 4
3b is for holding the protruding portion 2h of the door 2 with its end pressed down when the door is closed when the fitting portion 43a is fitted into the through hole 44.

FIG. 6 is a diagram for specifically explaining the elastic packing 25 and the relationship between the elastic packing 25 and the door 2. When the elastic packing 25 is attached to the door side edge 24 of the water storage tank 23, the holding metal fitting 46 is inserted into the metal fitting inserting portion 45 of the straight packing main body 42b. The holding fitting 46 is fixed to the bottom of the water storage tank 23. With this configuration, the elastic packing 25 can be securely fixed.

When the elastic packing 25 is attached to the door side edge 24 of the water storage tank 23 and the door 2 is changed from the open state shown by the solid line to the closed state shown by the two-dot chain line, the door 2
Is received by the straight packing body 42b and the curved packing body 43b (not shown).
On the other hand, since the straight packing body 42b that receives most of the protrusion 2h of the door 2 has a hollow structure as described above,
It has a greater elastic force than a solid structure. Therefore, when the door 2 is closed, the straight packing body 42 is closed.
The impact force acting on b can be absorbed. When the door 2 is closed, the protruding portion 2h of the door 2 is held by the straight packing body 42b while being pressed.

The straight packing body 42 has a water passage hole 50 formed therein. The water passage hole 50 is for guiding washing water and the like accumulated in the water accumulation space 51 into the water storage tank 23 along a white arrow. In FIG. 6, the water passage hole 50 is formed by continuously notching the upper surface and the side surface of the straight packing body 42b. When the door is closed, the water tank 23 has a linear packing 42 attached to the inner wall of the water tank 23.
, The protrusion 2h of the door 2, and the linear packing main body 42b form a puddle space 51. The puddle space 51 is connected to the outside of the machine. In the water pool space 51, cleaning water is normally stored at the time of cleaning. That is, at the time of cleaning, the upper nozzle 28 and the lower nozzle 31
Cleaning water is injected from the upper injection port 28a and the lower injection port 31a formed respectively. Moreover, the upper nozzle 28 and the lower nozzle 31 are rotating. Therefore, in the cleaning room 20 and the water storage tank 23, the cleaning water always scatters greatly. As a result, the washing water accumulates in the water accumulation space 51. On the other hand, if the washing water is left standing in the pool space 51, the washing water may leak out of the machine.

Therefore, by forming the water passage hole 50 in the straight packing body 42b, the washing water accumulated in the water accumulation space 51 is returned into the water storage tank 23.
As shown in FIGS. 7 and 8, a plurality of the water passage holes 50 are formed in the straight packing body 42b at predetermined intervals. FIG. 7 is a plan view showing a state in which the elastic packing 25 is attached to the door-side edge 24 of the water storage tank 23 and a part of the grip portion 42a and the linear packing main body 42b are cut away. FIG. 8 is a sectional view taken along the line AOO-A'-A in FIG.

The discharge side corresponding to the water reservoir 23 side of the water hole 50 needs to be formed at least at a position higher than the above-mentioned overflow water level. That is, if the discharge side of the water passage hole 50 is formed at a height equal to or lower than the overflow drainage water level, the washing water accumulated in the water accumulation space 51 cannot be returned into the water storage tank 23 during the overflow rinsing process. .

As described above, according to the shape of the door side edge 24 of the water storage tank 23, the elastic packing 25 of the present embodiment has a straight packing 42 and two curved packings that can be fitted to the straight packing 42. 43.
Therefore, the elastic packing 25 can be attached according to the shape of the door side edge 24 of the water storage tank 23. Moreover,
The protruding portion 2h of the door 2 is held in a state pressed by the elastic packing 25. Therefore, the function as a sealing member can be sufficiently performed. Therefore, the cleaning water does not leak from between the cabinet 1 and the door 2.

Moreover, the linear packing 42 can be adjusted to the water tanks 23 of various sizes only by changing its length. Therefore, there is no need to form and manufacture a dedicated elastic packing 25 for the water storage tank 23. Therefore, cost can be reduced. The elastic packing 25 is attached by fitting the curved packing 43 to both ends of the linear packing 42 and by applying the elastic packing 25 to the elastic packing 25.
Is mounted on the door-side edge portion 24 of the water storage tank 23.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the water passage holes 50 are formed at regular intervals by cutting out a continuous portion from the upper surface to the side surface of the linear packing body 42b. For example, as shown in FIG. A long hole is formed on the upper surface of the linear packing body 42b along the length direction (a direction perpendicular to the paper surface in the figure), and a long hole is formed on the side surface of the straight packing body 42b along the length direction. The water passage hole 50 may be connected inside the straight packing body 42b.

In the above embodiment, the linear packing body 42b is manufactured by an extrusion molding technique and has a hollow structure. However, it may be manufactured by a pressure molding technique and may have a solid structure. In this case, for example, as shown in FIG. 10, a hole penetrating the inside of the straight packing body 42b may be used as the water passage hole 50. Various other design changes can be made within the scope described in the claims.

[0043]

As described above, according to the elastic packing of the present invention, the elastic packing corresponding to the shape of the water storage tank can be attached to the edge of the water storage tank. Can be reliably sealed. Therefore, the washing water does not leak out of the machine. Moreover, the elastic packing can be adjusted to the size of the water storage tank only by changing the length of the formed straight packing, so that it is not necessary to form a special elastic packing. Therefore, cost can be reduced.

Further , since the packing main body is formed with a water passage hole for guiding water accumulated in the water accumulation space to the water storage tank, it is possible to reliably prevent water from leaking out of the machine.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external configuration of an appliance washer of one embodiment to which an elastic packing of the present invention is applied.

FIG. 2 is a front view showing the internal configuration of a door provided in the utensil washer.

FIG. 3 is a cross-sectional view of the door.

FIG. 4 is a schematic perspective view showing the utensil washer in a state where the door and a part of the right side surface are partially cut away.

FIG. 5 (a) is a view showing a state in which an elastic packing is attached to a door-side edge of a water storage tank provided in the utensil washer, and FIG. FIG. 3 is an exploded perspective view for specifically explaining a configuration with an elastic packing.

FIG. 6 is a view for specifically explaining an elastic packing and a relationship between the elastic packing and a door.

FIG. 7 is a view showing a state in which an elastic packing is attached to a door side edge of the water storage tank, and a part of a straight packing body is cut away.

FIG. 8 is a sectional view taken along the line AOO-A 'of FIG. 7;

FIG. 9 is a view for explaining another configuration of the water hole formed in the straight packing body.

FIG. 10 is a view for explaining another configuration of the water hole formed in the straight packing body.

[Explanation of symbols]

 2 Door 2h Projection 20 Cleaning Room 23 Water Storage Tank 24 Door Side Edge 25 Elastic Packing 40 Straight Edge 41 Curved Edge 42 Straight Packing 43 Curved Packing 44 Through Hole 50 Water Hole 51 Water Pool Space

──────────────────────────────────────────────────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-1-163788 (JP, U) JP-A-4-112361 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) ) A47L 15/42 F16J 15/10 F25D 23/02

Claims (1)

(57) [Claims] 1. A cleaning chamber, a door for opening and closing the cleaning chamber, and a water storage tank provided in the cleaning chamber, wherein the water storage tank has a linear edge facing one side of the door. An elastic packing for preventing water leakage from between the door and each edge of the water storage tank, which is applied to a washing machine having a portion and a curved edge extending on both sides thereof. A linear packing having a constant cross-sectional shape and being linearly elongated, and capable of being attached to the linear edge; and a curved packing that can be coupled to both ends of the linear packing and that is shaped along the inner wall of the curved edge. Wherein the straight packing is located inside the straight edge,
When the door is closed, one side of the door is pressed
The packing body has a straight edge.
Puddle space formed by the part, door and packing body
Water holes are formed to guide the water that accumulates in the storage tank
Elastic packing, characterized by that.