JPH07265252A - Washing device - Google Patents

Abstract

PURPOSE:To prevent the freezing of washing water in a washing device for washing objects to be washed such as dishes with a jet of fresh water. CONSTITUTION:Fresh water is injected into a washing space 5 communicated with the opening section 2 of a main body 1 from a main nozzle 9, an auxiliary nozzle 12 and a bottom rim nozzle 13 to wash objects to be washed, and an air current is injected from an air nozzle 14 after washing for dripping. A temperature sensor 21 detects the temperature of washing water. When the temperature becomes a prescribed value or below, the washing water is intermittently injected to prevent freezing. The intermittent time is set according to the temperature of the washing water.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art FIG.
It is a longitudinal cross-sectional view which shows the conventional dishwasher shown by the 1st publication.

In the figure, (51) is a main body, and (52) is a main body (51).
A water supply valve provided above, (53) an inner tank provided in the main body (51), (54) a nozzle bearing fixed to the bottom of the inner tank (53), and (55) a nozzle bearing ( 54) rotatably supported injection nozzle, (56) is a tower nozzle fixed in the center of the injection nozzle (55), and (57) is an internal tank located directly above the injection nozzle (55).
Tableware (58) is stored in the lower basket supported by the side wall of (53). (59) is an internal tank located above the tower nozzle (56)
Tableware (58) is stored in the upper basket supported by the side wall of (53).

Reference numeral (60) is a recess formed in a part of the bottom surface of the inner tank (53), and a residual food filter (61) is provided therein. (62) is a pump, the suction port of which is a recess (60) through a suction pipe (63).
The discharge port of the pump (62) is connected to the nozzle bearing (54) through the discharge pipe (64). Reference numeral (65) is a drain pipe connected to the bottom of the recess (60) and provided outside the main body (51).

The conventional dishwasher is constructed as described above, and the dishes (58) are stored in the lower basket (57) and the upper basket (59).
It is set in the inner tank (53). Then, open the water supply valve (52), inject tap water into the inner tank (53), mix the detergent and pump.
Drive (62). With this, the cleaning water sucked by the pump (62) is discharged through the water discharge pipe (64), is sprayed upward from the spray nozzle (55), and is rotated by its reaction to rotate in the lower basket (57). Wash the dishes (58). Similarly, the tower nozzle (56) also sprays the washing water and rotates to wash the dishes (58) in the upper basket (59).

In this way, the washing water for washing the dishes (58) falls in the inner tank (53) and flows into the recess (60). Then, it is cleaned by the residual food filter (61), sucked into the pump (62), supplied again from the discharge pipe (64) to the injection nozzle (55) and the tower nozzle (56), and the cleaning water is circulated for cleaning. Repeat the operation. Then, when the cleaning with the detergent is completed, the polluted water is drained through the drain pipe (65).

After that, fresh water is again supplied by the water supply valve (52), and the water is sprayed from the spray nozzle (55) and the tower nozzle (56) for rinsing as in the case of cleaning. When the rinse is finished, drain it again. Finally, the tableware (58) is blown by a blower (not shown) to dry the tableware (58).

[0008]

In the conventional dishwasher as described above, tap water is injected through the water supply valve (52) for cleaning, but the temperature of the cleaning water is controlled. Since it does not exist, there is a problem that the washing water may be frozen during cold weather, which may damage the pump (62) and the like.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cleaning device capable of preventing freezing of cleaning water and preventing damage to the cleaning mechanism.

[0010]

A cleaning device according to a first aspect of the present invention has a nozzle that uses fresh water supplied from a water source as cleaning water for cleaning an object to be cleaned and injects the fresh water into a cleaning space. In the cleaning device, a temperature sensor for detecting the temperature of the cleaning water is provided, and freeze prevention control means for instructing intermittent ejection of the cleaning water when the detected temperature becomes a predetermined value or less is provided.

The cleaning apparatus according to a second aspect of the present invention is the cleaning apparatus according to the first aspect of the present invention, wherein the antifreezing control means is configured to set the intermittent time of the jet of cleaning water in correspondence with the detected temperature. is there.

Further, in the cleaning apparatus according to the third aspect of the present invention, fresh water supplied from a water source is used as cleaning water for cleaning the object to be cleaned, and the cleaning apparatus has a nozzle for ejecting the fresh water into the cleaning space. A temperature sensor for detecting the temperature and a heating mechanism for heating the wash water are provided, and when the detected temperature becomes a predetermined value or less, the antifreeze control means for operating the heating mechanism for a time corresponding to the detected temperature is provided. It is a thing.

[0013]

In the first aspect of the present invention, when the temperature of the wash water becomes equal to or lower than the predetermined value, the wash water is ejected intermittently, and in the second aspect of the invention, the interruption time is set according to the temperature of the wash water. As a result, the washing water flow is generated even during the rest.

Further, in the third aspect of the invention, when the temperature of the wash water becomes equal to or lower than a predetermined value, the time corresponding to the temperature of the wash water,
Since the cleaning water is heated, it can be heated for a long time when the cleaning water temperature is low and for a short time when the cleaning water temperature is high.

[0015]

【Example】

Example 1. 1 to 8 are views showing one embodiment of the first and second inventions of the present invention, FIG. 1 is a perspective view showing the inside of a dishwasher, and FIG. 2 is a partially cutaway perspective view of the inner tank and the outer tank. Fig. 3, Fig. 3 is a transverse sectional view of Fig. 2, Fig. 4 is a longitudinal sectional view of Fig. 2, Fig. 5 is a longitudinal sectional view of an inner tank and an outer tank portion showing a circulating spray flow, and Fig. 6 is an inner tank showing a cleaning state. 7 is a longitudinal sectional view of the outer tank portion, FIG. 7 is an operation explanatory view of the main nozzle and the sub nozzle, and FIG. 8 is a diagram showing a freeze prevention control device. In the figure, the same reference numerals indicate the same portions.

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

The inner tank (4) is provided with a suction port (4a) communicating with the spray channel (7) at the bottom thereof, a window hole (4b) serving as an outlet port on the inner wall, and a window hole (4b). 4b) is provided with a rectifying plate (4c) inclined downward. Further, a fin (4d) inclined downward is projected on one of the inner walls of the inner tank (4), and a notch for loosely fitting an air nozzle (14) described later on the other inner wall.
(4e) is formed. In addition, a hole (4f) for passing a light ray of a sensor and a flow of washing water, which will be described later, is provided in the upper portion of the inner wall. (8) is an upper plate that closes the upper edges of the inner tank (4) and the outer tank (6) and forms the opening (2).

(9) is a main nozzle mounted on one side of the inner surface of the outer tank (6), which is held by hand in the cleaning space (5) through the hole (4f) provided in the inner tank (4). Wash water (1) on the tableware (10).
Inject 1). (12) is a similar sub-nozzle arranged above the main nozzle (9), and (13) is mounted on the other side of the inner surface of the outer tank (6) and faces the main nozzle (9) and the sub-nozzle (12). The nozzle for the thread bottom provided in (14) is the nozzle for the air which blows out the air for draining by protruding into the washing space (5) through the notch (4e) of the inner tank (4),

(15) (15) are washers which face each other and emit and receive a ray of light passing through the inner vessel (4) through the hole (4f) through the hole (4f) and detect an object which blocks this ray. Sensor, (16)
(16) is a drainage sensor. Then, the cleaning sensor (15) (1
5) is located near one side of the opening (2) and the drain sensor (1
6) and (16) are also arranged on the other side.

Reference numeral (17) is a water storage tank installed in the main body (1) for storing fresh water such as a water pipe, and a corrugation (not shown) is formed on the inner wall of the water storage tank, which is composed of irregularities for suppressing rocking of the water surface. Has been done. (18) is a base installed on the bottom of the main body (1) and tilted lower than the front, (19) is installed on the base (18), the suction side is connected to the water tank (17) by piping, and the discharge side is each nozzle. (9) (12) (13) pipe pressurizing pump, (2
0) is installed on the base (18) and the discharge side is the air nozzle (14)
An air blower connected to the with a hose to send air under pressure, and (21) is a temperature sensor provided near the water intake of the water storage tank (17). The temperature sensor (21) may detect the temperature directly from the wash water (11) in the water storage tank (17) or detect the temperature of the air in the water storage tank (17) to detect the temperature of the wash water (11). It may be estimated, or the temperature of the water pipe further upstream of the water storage tank (17) may be detected.

In FIG. 8A, (25) is a temperature sensor (21).
And a cleaning mechanism (26) is connected to the controller.
Here, the cleaning mechanism (26) has a pressurizing pump (19) as a main part.

Next, the general operation of this embodiment will be described. When the cleaning device is not used, the opening (2) is closed by the lid (3), which prevents the dishes (10) from falling and expands the working space of the kitchen. When in use,
Open the lid (3) and fold it in half to stand, as shown in
Prevents splashed water from splashing against the tableware (10) during washing. It should be noted that if the lid (3) is tilted further outward from the position shown in FIG. 1, cleaning becomes easier.

Now, the opening (2) opened by the lid (3)
Then, the tableware (10) held by hand is put into the washing space (5) to start washing. First, when the tableware (10) is inserted into the cleaning space (5) from the front of the opening (2) and the light beam of the cleaning sensor (15) is blocked, the cleaning sensor (15) operates and the pressurizing pump ( 19)
Is driven. With this, the washing water is pressurized to a water force capable of removing dirt adhering to the dishes (10), and the main nozzle (9),
It is jetted from the sub 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 tableware (10) and the inner tank (4) to generate spray. This spray is guided to the suction port (4a) by the kinetic energy of the wash water (11). At this time, the flow passage area of the suction port (4a) is set to be wider than the other flow passage portions, and the curved surface portion (6a) at the corner of the outer tank (6) is provided, so Are efficiently collected. The collected mist rises up the mist path (7) and the wash water (11)
Window hole (4b) provided above the position where it collides with (10)
And, it is rectified by the rectification plate (4c), and it is a stable washing space.
(5) It is jetted out.

As a result, the spray generated in the cleaning space (5) is stably guided from the cleaning space (5) into the spray passage (7), adheres to the wall surface of the spray passage (7), Only the flow circulates,
Outflow of spray to the outside of the washing space (5) is reduced. Fin (4d)
Is provided above the position where the wash water (11) collides with the inner tank (4), and thus the splashed water is suppressed from splashing. Further, the window hole (4b) is provided above the inner tank (4), but a window hole communicating with the spray channel (7) may be added to the inner wall of the inner tank (4), and the scattered water Can be released to the spray channel (7).

The sub-nozzle (12) and the yarn bottom nozzle (13) jet a jet of lower pressure than the main nozzle (9) by an orifice (not shown) provided between the sub-nozzle (12) and the yarn bottom nozzle (13). . The jet flow (23) from the sub nozzle (12) is above the high pressure washing water (11) from the main nozzle (9) as shown in FIG. 7, and the washing water (11) from the main nozzle (9) is Since () is in the form of a water film, the water that collides with the tableware (10) and is about to be scattered is shielded, and water is prevented from splashing outside from the opening (2).

At the same time, the jet flow (23) from the sub nozzle (12) is
Tableware (10) above the wash water (11) from the main nozzle (9)
The jet (23) which has collided with and loses energy drops downward. The wash water (11) from the main nozzle (9) collides with the dishes (10) and jumps, but since the falling water flow is suppressed,
Prevents water from splashing outside from the opening (2).

Further, with respect to the bowl, the washing water from the yarn bottom nozzle (13) can be used to wash the inside of the bowl with the main nozzle (9) and simultaneously wash the yarn bottom side. At this time,
The water pressure of the wash water from the thread bottom nozzle (13) is lowered to the extent that splashing due to collision does not occur.

When the dishes (10) have been washed in this way, the dishes (10) are moved in the horizontal direction while being held,
When the light beam of the water drain sensor (16) is blocked, the water drain sensor (16) operates and the blower (20) is driven. With this, the blower (20)
Blows air, and the air is blown out from the air nozzle (14) to blow away water droplets adhering to the tableware (10) to dry. This completes the cleaning and drying work.

Next, the freeze prevention control operation will be described with reference to FIG. Now, it is assumed that the cleaning device is not in use. In step (31), the temperature sensor (21) detects the temperature of the wash water supplied from the tap water. And step (32)
Check whether the temperature of the washing water is below a predetermined temperature (low temperature that may freeze). If the temperature exceeds the predetermined temperature, the process proceeds to step (33), and the cleaning mechanism (26) remains stopped.

When the temperature of the washing water becomes equal to or lower than a predetermined temperature, the process proceeds to step (34), the intermittent operation time (on / off time) is determined according to the detected temperature, and this intermittent operation is performed at step (35) (freezing prevention control means). The cleaning mechanism (26) is turned on / off according to the operation time. Therefore, a flow of washing water is generated even during suspension, and freezing is efficiently prevented.

Example 2. In the first embodiment, the intermittent operation time is determined depending on the temperature of the cleaning water, but it is sufficiently useful to turn on / off the cleaning mechanism (26) at a constant intermittent operation time regardless of the temperature. Therefore, the configuration can be simplified.

Example 3. 9 and 10 are views showing an embodiment of the third invention of the present invention, FIG. 9 is a partial view of FIG. 1, and FIG. 10 is a view showing a freeze prevention control device. 9 and 1
In 0 (A), (41) is a heating mechanism which is provided in the housing of the pressurizing pump (19) and includes a heater for heating the washing water, and (42) is a temperature adjusting means for adjusting the heating temperature. is there.

Next, the operation of this embodiment will be described with reference to FIG. As described above, it is determined in step (32) whether the temperature of the washing water is equal to or lower than the predetermined temperature. If the temperature is higher than the predetermined temperature, the process proceeds to step (45), and the heating mechanism (41) maintains the stopped state. If the temperature of the wash water drops below the specified temperature, step
Proceeding to (46), the heating time corresponding to the detected temperature is determined, and the heating mechanism (41) is turned on for this heating time in step (47). With this, when the washing water temperature is low, it can be heated for a long time, and when it is high, it can be heated for a short time, and freezing is efficiently prevented.

Example 4. In the third embodiment, the heating time is determined according to the temperature of the washing water, but the heating mechanism (41) may be turned on for a fixed time or continuously regardless of the detected temperature. It is sufficiently useful, and the configuration can be simplified.

Example 5. FIG. 11 shows the first to third aspects of the present invention.
It is a figure which shows the freeze prevention control apparatus which shows other Example of invention. In FIG. 11 (A), (47) is a flow rate adjusting means for adjusting the flow rate of the washing water.

Next, the operation of this embodiment will be described with reference to FIG. As described above, in step (32), it is determined whether the temperature of the washing water is equal to or lower than the predetermined temperature. If the temperature is higher than the predetermined temperature, the process proceeds to step (33), and the washing mechanism (26) remains stopped. If the temperature of the wash water drops below the specified temperature, step
Proceed to (51), determine the wash water flow rate corresponding to the detected temperature,
In step (52), the cleaning mechanism (26) is operated at this flow rate.
Therefore, the wash water is supplied at a flow rate corresponding to the temperature at that time, and freezing is efficiently prevented.

Example 6. FIG. 12 shows the first to third aspects of the present invention.
It is a figure which shows the freeze prevention control apparatus which shows other Example of invention. Note that FIG. 12A is similar to FIG. 11A. next,
The operation of this embodiment will be described with reference to FIG. As described above, it is judged in step (32) whether the temperature of the washing water is below the predetermined temperature, and if it is above the predetermined temperature, the step (33)
And the cleaning mechanism remains stopped. When the temperature of the cleaning water becomes lower than the predetermined temperature, the process proceeds to step (54), the flow rate of the cleaning water is adjusted to be lower than usual, and the cleaning mechanism (2
6) Turn on. As a result, a small amount of washing water flow is generated even during suspension, freezing can be prevented, and water is saved more than in normal operation.

Example 7. In the sixth embodiment, the flow rate of the washing water at the time of antifreezing is suppressed to save water, but even if it is made to flow at a normal flow rate, it is sufficiently useful for antifreezing.

Example 8. FIG. 13 shows the first to third aspects of the present invention.
It is a figure which shows the freeze prevention control apparatus which shows other Example of invention. In FIG. 13 (A), (57) is an informing means including an indicator lamp, a buzzer and the like.

Next, the operation of this embodiment will be described with reference to FIG. As described above, it is judged in step (32) whether the temperature of the washing water is lower than or equal to the predetermined temperature, and if it is higher than the predetermined temperature, the process proceeds to step (58) to cancel the notification operation and wash in step (33). The mechanism (26) remains stopped. Therefore,
The notification means (57) does not operate. When the temperature of the washing water becomes equal to or lower than the predetermined temperature, the process proceeds to step (59), the notifying means (57) is operated, and the washing mechanism (26) is turned on in step (52).

In this way, the freezing of the washing water is prevented and the user can be informed of the reason why the washing mechanism (26) is operating during the rest. In addition, the temperature sensor (2
The temperature of the wash water detected in 1) can be easily displayed on the display means, and the user can be notified of the temperature of the wash water.

In each of the above-mentioned embodiments, the tableware (10) is cleaned, but the invention is not limited to this, and the invention can be used for cleaning a filter of a ventilation fan, for example. Further, in the industrial field, it can be widely applied as a cleaning device for degreasing pressed products and removing cutting powder.

[0044]

As described above, according to the first aspect of the present invention, when the temperature of the washing water becomes lower than the predetermined value, the washing water is intermittently ejected. It has the effect of preventing freezing and damage to the cleaning mechanism.

Further, in the second aspect of the invention, when the temperature of the wash water becomes equal to or lower than the predetermined value, the wash water is ejected intermittently and the interruption time is set according to the temperature of the wash water, so that the freezing can be effectively prevented. There is.

Further, in the third aspect of the invention, when the temperature of the wash water is equal to or lower than the predetermined value, the wash water is heated for a time corresponding to the temperature of the wash water. When it is high, it can be heated for a short time, and it is effective in preventing freezing efficiently.

[Brief description of drawings]

FIG. 1 is an internal perspective view of a dishwasher showing 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.

3 is a cross-sectional view of FIG.

FIG. 4 is a vertical sectional view of FIG.

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

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

FIG. 7 is an operation explanatory diagram of the main nozzle and the sub nozzle according to the first embodiment of the present invention.

8A and 8B are diagrams showing a freeze prevention control device according to the first embodiment of the present invention, in which FIG. 8A is a block diagram and FIG. 8B is an operation flowchart.

FIG. 9 is a partial view of FIG. 1 showing the third embodiment of the present invention.

10A and 10B are diagrams showing a freeze prevention control device according to a third embodiment of the present invention, in which FIG. 10A is a block diagram and FIG. 10B is an operation flowchart.

11A and 11B are diagrams showing a freeze prevention control device according to a fifth embodiment of the present invention, in which FIG. 11A is a block diagram and FIG. 11B is an operation flowchart.

12A and 12B are views showing a freeze prevention control device according to a sixth embodiment of the present invention, in which FIG. 12A is a block diagram and FIG. 12B is an operation flowchart.

13A and 13B are diagrams showing a freeze prevention control device showing an eighth embodiment of the invention, in which FIG. 13A is a block diagram and FIG. 13B is an operation flowchart.

FIG. 14 is a vertical cross-sectional view showing a conventional dishwasher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 main body 2 opening part 4 inner tank 5 cleaning space 6 outer tank 9 main nozzle 10 objects to be cleaned (tableware) 11 cleaning water 19 pressurizing pump 21 temperature sensor 25 control device 26 cleaning mechanism 41 heating mechanism 42 temperature adjusting means 47 Flow rate adjustment means

Claims (3)

[Claims] 1. An opening through which an object to be cleaned can be taken in and out, a cleaning space communicating with the opening, a water storage tank for supplying fresh water for cleaning the object to be cleaned as cleaning water, and the cleaning water in the cleaning space. In the one provided with a nozzle for jetting to the, a temperature sensor for detecting the temperature of the washing water is provided,
A washing apparatus comprising: antifreeze control means for instructing the intermittent ejection of the washing water when the detected temperature becomes equal to or lower than a predetermined value. 2. The cleaning apparatus according to claim 1, wherein the antifreezing control means is configured to set an intermittent time of jetting of cleaning water in accordance with the detected temperature. 3. An opening through which an object to be cleaned can be taken in and out, a cleaning space communicating with the opening, a water storage tank for supplying fresh water for cleaning the object to be cleaned as cleaning water, and the cleaning water in the cleaning space. In the one provided with a nozzle for ejecting to the nozzle, a temperature sensor for detecting the temperature of the cleaning water and a heating mechanism for heating the cleaning water are provided, and when the detected temperature becomes equal to or lower than a predetermined value, the temperature is detected. A cleaning device comprising freeze prevention control means for operating the heating mechanism for a corresponding time.