JP2903994B2 - Cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for cleaning an object to be cleaned by using jet water.

[0002]

2. Description of the Related Art Conventionally, there is a well-known dishwasher in which dishes are stored in a main body, and washing water is sprayed into the main body to wash the dishes.
However, in this dishwasher, since the washing water is circulated for washing, the stain of the washing water increases, and the washing must be incomplete. To improve this, a dishwasher described in, for example, Japanese Patent Application No. 5-181745 has been proposed. This has an opening on the upper surface of the main body, puts the tableware held by hand into the washing space inside from this opening, and jets fresh water supplied with a water source as washing water to wash it. A stream is sprayed to blow off water droplets attached to tableware and dry.

[0003]

In the conventional dishwasher as described above, since an opening is provided on the upper surface of the main body, mist and water droplets generated by a jet flow at the time of washing blow out to the outside from the opening of the main body. There is a problem.

[0004] The present invention has been made to solve the above problems, and an object of the present invention is to provide a cleaning apparatus capable of easily preventing the mist from blowing up even if the mist is generated by a jet. I do.

[0005]

According to a first aspect of the present invention, there is provided a cleaning apparatus comprising: an inner tub forming a cleaning space; and a spray generated during cleaning between the inner tub provided outside the inner tub. An outer tank that forms a flowing spray passage is provided, and a suction port and a window hole that communicate with the spray flow path are provided in the inner tank.

A cleaning apparatus according to a second aspect of the present invention includes the inner tank and the outer tank according to the first aspect of the present invention, and has fins protruding into the washing space on the inner wall of the inner tank.

A cleaning apparatus according to a third aspect of the present invention comprises a nozzle for injecting cleaning water to the object to be cleaned, comprising a main nozzle and a sub-nozzle disposed above the main nozzle.

[0008]

According to the first aspect of the present invention, a spray channel is formed between the inner tank and the outer tank, a suction port is provided on the bottom surface of the inner tank, and a window hole is provided on the inner wall. Because of the communication, the spray generated in the washing space by colliding with tableware etc. is guided to the suction port by the kinetic energy of the jet from the nozzle, adheres to the spray channel wall, and only the air flow flows through the spray channel. The jet is blown out from the window hole, and the blow-up of the spray is suppressed by the air flow generated by the jet.

In the second aspect of the present invention, fins are provided on the inner wall of the inner tank so as to protrude into the washing space, so that the water jet caused by the jet from the nozzle colliding with the inner tank is suppressed.

In the third aspect of the present invention, since the sub-nozzle is disposed above the main nozzle for jetting the cleaning water, the water colliding with the object to be cleaned during the cleaning and scattered upward is discharged by the jet from the sub-nozzle. Suppressed by water flow.

[0011]

【Example】

Embodiment 1 FIG. 1 to 10 show an embodiment in which the first to third inventions of the present invention are applied to a dishwasher. FIG. 1 is a perspective view showing the inside of the dishwasher, and FIG. 2 is an inner tank and an outer tank. FIG. 3 is a cross-sectional view of FIG. 2, FIG. 4 is a detailed view of a main nozzle, FIG. 5 is a vertical sectional view of an inner tank and an outer tank showing a circulating spray flow, and FIG. 7 to 9 are explanatory views of the operation of the main nozzle and the sub-nozzle, and FIG. 10 is an explanatory view of removing the inner tank. FIG. Show.

1 to 3, (1) is a main body of a dishwasher, (2) is an opening formed at an upper portion of the main body (1), and (3) is one edge of the main body (1). A foldable lid pivotally attached to the upper surface to open and close the opening (2), (4) is an inner tank that is housed in the main body (1) and has a washing space (5) formed inside, and (6) is an inner tank In the outer tank provided outside of (4), a spray channel (7) is formed between the outer tank and the inner tank (4), and a curved surface (6a) is formed at a bottom corner.

The inner tank (4) is provided at its bottom with a suction port (4a) communicating with the spray channel (7), and the inner wall is provided with a window hole (4b) as a blowout port. 4b) is provided with a flow straightening plate (4c) inclined toward the spray flow path (7). In addition, inner tank (4)
A fin (4d) projecting downward is protruded from one of the inner walls, and a notch (4e) for loosely fitting an air nozzle (14) to be described later is formed on the other inner wall. (8) is an upper plate that closes upper edges of the inner tank (4) and the outer tank (6) and forms an opening (2).

(9) is a main nozzle mounted on one side of the inner surface of the outer tub (6), and the tableware (10) held by hand in the washing space (5) through a hole provided in the inner tub (4). ) Is sprayed with a water film-like washing water (11). (12) is a similar sub-nozzle arranged above the main nozzle (9), (13) is a main nozzle mounted on the other side of the inner surface of the outer tank (6)
(9) and a thread bottom nozzle provided opposite to the sub-nozzle (12), (14) protrudes into the washing space (5) through the notch (4e) of the inner tank (4) to discharge air for draining. Nozzle for blowing air, (15) (1
5) is a cleaning sensor that emits and receives light rays that are provided in the outer tank (6) to face each other and crosses the inner tank (4), and detects an object that blocks the light rays. Sensor
(15) and (15) are disposed closer to one side of the opening (2), and the drainage sensors (16) and (16) are also disposed closer to the other side.

(17) is a water storage tank which is installed in the main body (1) and stores fresh water such as a water pipe, and its inner wall is formed with a wave return (not shown) having irregularities for suppressing the water surface from oscillating. Have been. (18) is a base installed on the bottom of the main body (1) and inclined low with respect to the front, (19) is installed on the base (18) and the suction side is connected to the water storage tank (17) by piping, and the discharge side is each nozzle (9) Pressurizing pump connected to (12) (13), (2
(0) is installed on the base (18) and the discharge side is a nozzle for air (14)
This is a blower that is connected to a pipe and sends air under pressure.

In FIG. 4, a washing water flow path (9a) having a rectangular cross section is provided at the center of the axis of the main nozzle (9), and the tip (9b) has a smooth flow path cross-sectional area from the point a. And the end face has a rectangular slit elongated in the lateral direction. That is, assuming that the pressure inside the flow path (9a) is P and the distance in the flow direction of the washing water is x, the rate of change of the pressure with respect to the distance dp / dx
= The flow channel cross-sectional area is smoothly changed so as to be constant. Note that the sub nozzle (12) and the yarn bottom nozzle (13) are similarly formed.

Next, the operation of the cleaning apparatus configured as described above will be described. When the washing device is not used, the opening (2) is closed by the lid (3), thereby preventing the tableware (10) from falling and expanding the kitchen work space. At the time of use, as shown in FIG. 1, the lid (3) is opened and folded in two to stand, thereby preventing splashing water from colliding with the tableware (10) during washing. It should be noted that if the lid (3) is moved further outward from the position shown in FIG. 1, cleaning becomes easier.

The opening (2) opened by the lid (3)
Then, the tableware (10) held by hand is put into the washing space (5), and washing is started. First, the tableware (10) is inserted into the washing space (5) from just before the opening (2), and when the light beam of the washing sensor (15) is blocked, the washing sensor (15) operates and the pressurizing pump ( 19)
Is driven. With this, the washing water is pressurized to a level that can remove dirt attached to the tableware (10), and the main nozzle (9),
It is sprayed from the auxiliary nozzle (12) and the yarn bottom nozzle (13).

As shown in FIGS. 5 and 6, the washing water (11) from the main nozzle (9) collides with the dishes (10) and the inner tank (4) to generate spray. This spray is guided to the suction port (4a) by the kinetic energy of the washing water (11). At this time, the flow passage area of the suction port (4a) is set wider than the other flow passage portions, and the curved surface portion (6a) of the corner of the outer tank (6) is provided, so that spraying is performed. Is collected efficiently. The collected spray goes up the spray channel (7), and the washing water (11)
Window hole (4b) provided above the position where it collides with (10)
Rectified by the rectifier plate (4c), stably washing space
(5) Squirted into the inside.

As a result, the spray generated in the cleaning space (5) is stably guided from the cleaning space (5) into the spray channel (7), adheres to the wall of the spray channel (7), The removed air circulates and the outflow of the spray out of the washing space (5) is reduced. Since the fin (4d) is provided above the position where the washing water (11) collides with the inner tank (4), the water scattered by the collision is prevented from jumping. The window hole (4b) is provided above the inner tank (4).
A window hole communicating with (7) may be added, so that the scattered water can escape to the spray channel (7).

The sub-nozzle (12) and the yarn bottom nozzle (13) are jetted at a lower pressure than the main nozzle (9) by an orifice (not shown) provided between the sub-nozzle (12) and the pressurizing pump (19). Squirt. The jet (21) from the sub-nozzle (12) is located above the high-pressure washing water (11) from the main nozzle (9) as shown in FIG. ) Is in the form of a water film, so that water that collides with the tableware (10) and is scattered is shielded, and water is prevented from scattered to the outside from the opening (2).

At the same time, the jet (21) from the sub-nozzle (12)
Tableware (10) above the wash water (11) from the main nozzle (9)
The jet (21) which has lost energy and collides with the water drops downward. The washing water (11) from the main nozzle (9) collides with the tableware (10) and jumps, but since the falling water flow is suppressed,
Water is prevented from splashing from the opening (2) to the outside.

The water film-like jets (11) and (21) from the main nozzle (9) and the sub-nozzle (12) have divergence as shown in FIGS. 8 and 9, respectively. Main nozzle (9)
Is θ ₁ and the sub-nozzle (12) is θ ₂ , θ ₁ ≦ θ ₂ , that is, the spreading angle θ ₂ by the sub-nozzle (12) is equal to or larger than the spreading angle θ ₁ by the main nozzle (9). Widely set. Thus, water that collides with the tableware (10) during the washing and jumps can be suppressed.

The discharge pressure of the jet (21) from the sub-nozzle (12) is lower than the discharge pressure of the washing water (11) from the main nozzle (9), and is 0.2 to 1.0 kgf / cm ^2. Set to about. As a result, the jet (21) from the sub nozzle (12) suppresses the scattering of the washing water from the main nozzle (9), and the splash of water by the jet (21) from the sub nozzle (12) is extremely small. Less.

In addition, the bowl can be washed with the main nozzle (9) at the same time as the inside of the bowl by the washing water from the yarn bottom nozzle (13) and the yarn bottom side. At this time,
The water pressure of the washing water from the yarn bottom nozzle (13) is reduced to such an extent that jumping due to collision does not occur.

The jet (21) from the main nozzle (9) and the sub-nozzle (12) is not limited to a water film, but may be a sub-nozzle (12).
It is sufficient that the jet (21) from the nozzle is about the same as or wider than the spread angle of the washing water (11) from the main nozzle (9), and it is possible to shield the spray that is going to be ejected from the opening (2). .

When the washing of the tableware (10) is completed in this way, the tableware (10) is moved in the horizontal direction while holding the tableware (10), and when the light beam of the drainer sensor (16) is blocked, the drainer sensor (16) is activated. The blower (20) is driven to operate. As a result, the blower (20) sends air under pressure, and the air is blown out from the air nozzle (14) to blow off water droplets attached to the tableware (10) to dry. This completes the cleaning and drying operations.

In the above embodiment, when the cleaning device is not used, the opening (2) is closed by the lid (3). However, the opening (2) is not completely closed and a part of the opening (2). May be left open. In this way, if there is water on the lid (3), it can be dropped into the main body (1), and the water can be prevented from falling around the cleaning device.

Further, since the base (18) is inclined forward and low, even if water leaks in the cabin, water flows forward,
Water does not accumulate inside the body (1) and is easy to find. Further, at the time of maintenance, the work can be easily performed by pulling out the base (18). Further, the inner tank (4) can be removed upward as shown in FIG. 10, so that cleaning is easy.

Embodiment 2 FIG. FIGS. 11A and 11B are diagrams showing another embodiment of the main nozzle of the first embodiment, wherein FIG. 11A is a side view and FIG. 11B is a top view. In this embodiment, two symmetrical nozzle bodies (9A) having a semicircular cross section obtained by dividing a main nozzle (9) (same for a sub nozzle (12) and a nozzle for a yarn bottom (13)) into two along the axis. (9B). In the embodiment, the nozzle body (9A)
Although (9B) is symmetric, it is not limited to symmetric. This embodiment is easy to process and can be manufactured at low cost.

Embodiment 3 FIG. 12A and 12B are diagrams showing another embodiment of the main nozzle of the first embodiment, wherein FIG. 12A is a side view and FIG. 12B is a right end view. In this embodiment, the main nozzle (9) (the sub-nozzle (12) and the yarn bottom nozzle (13) are also the same) are divided into two along the axis to constitute the nozzle bodies (9A) and (9C). 9A) is formed in a semicircular cross section to provide a flow path (9a), the nozzle body (9C) does not have a flow path, and has a flat mating surface with the nozzle body (9A). This embodiment can also be manufactured at low cost because of easy processing.

Embodiment 4 FIG. FIG. 13 is an exploded perspective view showing another embodiment of the main nozzle of the first embodiment. In this embodiment, the nozzle body (9A) (9B) of the second embodiment is combined with a cylinder (9D).
Is press-fitted and fixed, and is easy to process and can be manufactured at low cost.

Embodiment 5 FIG. Each of the nozzles (9), (12), and (13) can be manufactured by injection molding, which further reduces the cost.

In the above embodiments, the tableware (10) was described as being washed, but the present invention is not limited to this, and it can be used for washing, for example, a filter of a ventilation fan. In the industrial field, it can be widely applied as a cleaning device for degreasing a pressed product, removing cutting powder, and the like.

[0035]

As described above, according to the first aspect of the present invention, a spray channel is formed between the inner tank and the outer tank, and the inner wall is provided with a window hole and a suction port located below the window hole. The spray generated in the cleaning space is guided to the suction port by the kinetic energy of the jet flow from the nozzle, and adheres to the spray flow path wall surface while flowing through the spray flow path. The removed air flow blows out from the window hole, and furthermore, the blow-up spray is suppressed by the air flow generated by the blow out, and there is an effect that water can be prevented from splashing out of the machine through the opening on the upper surface.

In the second aspect of the present invention, fins are provided on the inner wall of the inner tank so as to protrude into the washing space. This has the effect of preventing water from splashing out of the machine.

In the third aspect of the present invention, since the sub-nozzle is disposed above the main nozzle for jetting the cleaning water, the water colliding with the object to be cleaned during the cleaning and being scattered is suppressed by the jet from the sub-nozzle. This has the effect of preventing water from splashing out of the machine through the opening in the upper surface.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the inside of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of an inner tank and an outer tank of FIG. 1;

FIG. 3 is a transverse sectional view of FIG. 2;

FIG. 4 is a detailed view of the main nozzle of FIG. 1, (A) is a longitudinal sectional view,
(B) is a side (half) view, (C) is a left end (half) view of (A),
(D) is a right end (half) view of (A).

FIG. 5 is a longitudinal sectional view of an inner tank and an outer tank showing a circulating spray flow according to the first embodiment of the present invention.

FIG. 6 is a vertical sectional view of an inner tank and an outer tank showing a cleaning state according to the first embodiment of the present invention.

FIG. 7 is an operation explanatory view of a main nozzle and a sub-nozzle according to Embodiment 1 of the present invention.

FIG. 8 is an explanatory diagram of the operation of the main nozzle and the sub-nozzle according to the first embodiment of the present invention.

FIG. 9 is an operation explanatory diagram of a main nozzle and a sub nozzle according to the first embodiment of the present invention.

FIG. 10 is an explanatory view of removing an inner tank according to the first embodiment of the present invention.

FIG. 11 is a detailed view of a main nozzle showing a second embodiment of the present invention, wherein (A) is a side view and (B) is a plan view.

12A and 12B are detailed views of a main nozzle showing a third embodiment of the present invention, wherein FIG. 12A is a side view, and FIG. 12B is a right end view of FIG.

FIG. 13 is an exploded perspective view of a main nozzle showing a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Opening part 4 Inner tank 4a Suction port 4b Window hole (outlet) 4c Rectifier plate 4d Fin 5 Cleaning space 6 Outer tank 7 Spray channel 9 Main nozzle 10 Object to be cleaned (tableware) 11 Cleaning water 12 Secondary nozzle 13 Nozzle for thread bottom 14 Nozzle for air 19 Pump for pressurization 21 Jet

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-189888 (JP, A) JP-A-6-197857 (JP, A) JP-A-6-296573 (JP, A) JP-A-6-296573 296574 (JP, A) JP-A-6-343592 (JP, A) JP-A-6-343593 (JP, A) JP-A-3-41656 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47L 15/42

Claims (3)

(57) [Claims] An opening through which an object to be cleaned can be taken in and out;
A cleaning space that communicates with the opening, and a nozzle that jets cleaning water for cleaning the object to be cleaned into the cleaning space; an inner tank that forms the cleaning space; and an outer tank that is provided outside the inner tank. And an outer tank that forms a spray flow path through which the spray generated during the washing flows between the inner tank and the inner tank, a window hole is provided in the inner wall of the inner tank, and an inner tank below the window hole is provided. A cleaning device, wherein a suction port is provided to communicate with each of the spray channels. 2. It has an opening through which an object to be cleaned can be taken in and out,
A cleaning space that communicates with the opening, and a nozzle that jets cleaning water for cleaning the object to be cleaned into the cleaning space; an inner tank that forms the cleaning space; and an outer tank that is provided outside the inner tank. An outer tank that forms a spray flow path through which the spray generated during the washing flows between the inner tank and the inner tank, and a fin that protrudes into the washing space on the inner wall of the inner tank. Cleaning equipment. 3. An opening through which an object to be cleaned can be taken in and out,
A nozzle provided with a washing space communicating with the opening and a nozzle for jetting washing water for washing the object to be washed into the washing space, wherein the nozzle is a main nozzle and a sub-nozzle arranged above the main nozzle A cleaning apparatus characterized by comprising: