JP4457731B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for cleaning dishes and the like.

Conventionally, a washing tank is equipped with a water particle generation mechanism that sprays washing water in a mist form, and the dirt on the dishes is swollen with water particles before washing, making the dirt stuck to the dishes soft and easy to remove. The thing of the structure which improves this is known (for example, refer patent document 1).
JP 2000-189375 A

  However, in the above-described conventional configuration, the washing performance is improved because the stains of the dishes are swollen with water particles. However, the spray amount varies depending on the water temperature of the wash water, and when the water temperature is low, the spray amount decreases and If the atmospheric temperature in the tank is low, air convection in the cleaning tank is less likely to occur. Therefore, there is a problem that it is difficult to sufficiently attach water particles to every corner of the surface of tableware or the like housed in the cleaning tank.

  In addition, the use of high-concentration detergent liquid in the sprayed washing water can effectively remove dish stains. However, when ultrasonic vibration is used for the spraying means, water particles generated by spraying are not contained in the detergent liquid. Therefore, in order to continuously generate water particles of high-concentration detergent liquid, it is necessary to collect non-atomized detergent liquid and generate water particles again. If it is provided, the sprayed water particles cannot be sufficiently diffused into the cleaning tank, resulting in a problem that a good cleaning effect cannot be obtained.

  The present invention solves the above-described conventional problems, and aims to enhance the cleaning effect by sufficiently diffusing the sprayed water particles into the cleaning tank.

  In order to solve the above-mentioned conventional problems, the dishwasher of the present invention blows air into the washing tank by the blowing means during the operation of the spraying means for spraying the washing water in the form of a mist, and further according to the temperature of the washing water. The driving time of the blowing means is changed.

  Thereby, the sprayed water particles can be sufficiently diffused in the cleaning tank regardless of the spray amount of the cleaning water, and high cleaning performance can be obtained.

  The dishwasher of the present invention can sufficiently diffuse the sprayed water particles into the cleaning tank regardless of the spray amount of the cleaning water, and can obtain high cleaning performance.

The first invention includes a cleaning tank, a cleaning pump for pressurizing the cleaning water, a cleaning nozzle for injecting the cleaning water, a heater for heating the cleaning water, a spraying means for spraying the cleaning water in the form of a mist, and the cleaning An air blowing means for blowing air into the tank; and a control means for controlling the driving of the air blowing means, wherein the control means causes the air to be blown into the washing tank by the air blowing means during operation of the spraying means . When the temperature is higher than a predetermined temperature , the sprayed water particles are sufficiently diffused into the washing tank by blowing air regardless of the amount of washing water sprayed by controlling the driving time of the blowing means to be short. Water particles can be sufficiently adhered to the surface of tableware or the like accommodated in the washing tank. In addition, a stable spray amount can be ensured regardless of the temperature of the washing water.

  The second invention includes a cleaning tank, a cleaning pump for pressurizing the cleaning water, a cleaning nozzle for spraying the cleaning water, a heater for heating the cleaning water, a spraying means for spraying the cleaning water in the form of a mist, and the cleaning A blowing means for blowing air into the tank; and a control means for controlling the driving of the blowing means, wherein the control means blows air into the cleaning tank by the blowing means during operation of the spraying means. Since it is also used as a tableware drying fan, it is not necessary to newly provide a blowing means, and the configuration can be simplified.

  According to a third aspect of the present invention, a temperature sensor for detecting the temperature of the cleaning water is provided, and when the control means detects that the temperature of the cleaning water is equal to or lower than a predetermined temperature by the temperature sensor, the air blowing means enters the cleaning tank. By blowing air, the sprayed water particles can be sufficiently diffused into the cleaning tank even when the temperature of the cleaning water supplied to the cleaning tank is low.

  According to a fourth aspect of the present invention, when the temperature sensor detects that the temperature of the cleaning water is equal to or lower than a predetermined temperature, the heater is energized to heat the cleaning water, and when the temperature of the cleaning water exceeds a predetermined temperature, the blowing means Since the temperature of the cleaning water is equal to or higher than the predetermined temperature, the sprayed water particles are washed without driving the blowing means by the convection action. It can be diffused in the tank, and power consumption can be reduced.

  According to the fifth aspect of the present invention, since the air blowing means intermittently blows air, the actual driving time of the air blowing means can be reduced, and water particles sprayed with a small amount of electric power can be diffused in the cleaning tank. Become.

According to the sixth aspect of the present invention, the water particles sprayed by the spraying means can be efficiently diffused by adopting a configuration that blows air toward the spraying means.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
1 and 2 show a dishwasher according to Embodiment 1 of the present invention. As shown in FIG. 1, the water supply path 1 supplies tap water to the washing machine main body 2, and the water supply is controlled by a water supply valve 3. Reference numeral 4 denotes a washing tank. The washing tank 4 houses therein tableware baskets 10a and 10b for setting tableware and the like (not shown), and is provided with a water storage unit 5 for storing the supplied water. An auxiliary tank 6 provided with a water level detection means 25 communicates with the water storage section 5 of the cleaning tank 4.

  The water stored in the water storage unit 5 is heated by the heater 7 provided in the water storage unit 5 and pressurized by the cleaning pump 8, and is directed from the cleaning nozzle 9 toward the tableware in the tableware baskets 10 a and 10 b in the cleaning tank 4. The tableware is sprayed and washed. The drain pump 11 discharges the water in the cleaning tank 4.

The cleaning machine main body 2 is provided with a front door 12, and the table baskets 10 a and 10 b can be taken in and out of the cleaning tank 4 by opening and closing the front door 12. The leftover filter 13 captures leftovers attached to the tableware. The tableware drying fan heater 16 dries the tableware after washing the tableware. The driving of the tableware drying fan heater 16 is controlled by the control means 23, and the wind generated by the tableware drying fan heater 16 is sent to the cleaning tank 4 through the air passage 17. The air is blown toward the spray means 21.

  Further, a detergent inlet 18 is provided inside the cleaning tank 4 so that tap water is introduced. A cleaning liquid tank 20 for storing a detergent dissolved in tap water as cleaning water is provided below the detergent charging port 18 and communicates with the water storage unit 5 through the communication unit 26. The communication part 26 is positioned above the heater 7 and heats not only the water storage part 5 but also the water in the cleaning liquid tank 20 when the heater is energized. The cleaning water in the cleaning liquid tank 20 is atomized by the spraying means 21 having a method such as ultrasonic vibration or spraying.

  A temperature sensor 24 detects the temperature of the cleaning water in the cleaning liquid tank 20. However, the temperature sensor 24 is not necessarily arranged in the washing water tank 20, and the washing water tank 20 and the water storage unit 5 are in communication with each other, and may be arranged in the water storage unit 5. Further, the temperature of the cleaning water may be detected directly, or may be detected indirectly via a member to which the temperature of the cleaning water is transmitted.

  Next, the operation of the above configuration will be described. When the tableware is placed in the tableware baskets 10a and 10b and accommodated in the washing tank 4 and the operation is started after the detergent is put into the detergent inlet 18, the water supply valve 3 is opened and both the water storage unit 5 and the washing water tank 20 are opened. To be supplied with water. When it is detected by the water level detection means 25 that the supplied water has reached a predetermined water level, the water supply valve 3 is closed and the water supply is stopped. Next, the cleaning water in the cleaning liquid tank 20 is atomized by the spraying means 21 and sprayed into the cleaning tank 4.

  Here, as shown in FIG. 2A, when the temperature sensor 24 detects that the water temperature is equal to or lower than tk ° C., the heater 7 is energized to heat the cleaning water, and the control means 23 causes the blower means 16 to Driven. Here, the blower means the fan heater 16 for drying dishes. By this blowing, the air in the vicinity of the spray means 21 is diffused, and water particles are quickly filled into the cleaning tank 4. In particular, when the spraying means 21 is based on ultrasonic vibration, the water particles immediately after spraying are largely diffused to reduce collisions between the water particles immediately after spraying, thereby greatly reducing the disappearance of the water particles. The spray amount increases. Since the spray amount is small at low temperatures, the amount of spray can be increased by blowing air, and a stable spray amount can be secured regardless of the influence of the water temperature. The blower may be hot air or cold air. In particular, even when the water temperature is low, the necessary spray amount can be ensured by extending the air blowing time, and the spray can be accurately sprayed according to the temperature of the washing water.

  Eventually, the heated washing water reaches tk ° C. at time s1, but the blowing means 16 is stopped here. This tk ° C. is a water temperature that can be obtained without the blower means 16 for the amount of spray necessary for ensuring the cleaning performance, and it is generally set to 10 to 30 ° C. FIG. 2B shows a case where the initial water temperature t0 of the cleaning water is close to tk, but the water heated by the heater 7 reaches tk ° C. at time s2. Therefore, in this case, the driving time of the air blowing means 16 is shorter than that in FIG. FIG. 2 (c) shows a case where the initial water temperature t0 is higher than tk. At this time, it is not necessary to drive the blowing means 16.

  As described above, the time s1 varies depending on the difference between the initial water temperatures t0 and tk of the cleaning water, but may be set to a uniform time in order to simplify the control. Further, by blowing air during the entire spray period regardless of the water temperature, the spray amount can be increased as much as possible, and the cleaning performance can be maximized.

The detergent solution is sprayed and left for a predetermined time with water particles adhering to the surface of tableware or the like stored in the washing tank 4. Thereafter, after supplying a predetermined amount of water necessary for cleaning into the cleaning tank 4, the cleaning pump 8 is driven and cleaning water is jetted from the cleaning nozzle 9. As a result, the detergent adhered to the surface of the tableware or the like is dissolved in the washing water, and the washing process is performed so that the concentration of the detergent is reached by the supplied water. Thereafter, rinsing and drying are performed in the same manner as a general dishwasher.

  The air blowing means 16 is driven intermittently. Since the amount of air required to increase the amount of spray is very small, intermittent driving is sufficient, saving energy and improving the reliability of the blowing means. However, the air blowing means may naturally be a continuous drive.

  As described above, since the dishwasher according to the present invention blows during spraying, stable spraying can be performed regardless of the water temperature, and high cleaning performance can be realized. The present invention can also be applied to uses for improving the cleaning performance of clothes, shoes, human bodies, machine parts, electric parts and the like, and is also useful as a washing machine other than tableware.

Side sectional view of the dishwasher in Embodiment 1 of the present invention (A), (b), (c) Operation explanatory drawing which shows the relationship between the temperature of the washing water of the tableware washing machine, and a ventilation means

4 Washing tank 8 Washing pump 9 Washing nozzle 7 Heater 16 Blowing means (fan for tableware drying)
21 Spraying means 23 Control means 24 Temperature sensor

Claims (6)

A cleaning tank, a cleaning pump for pressurizing the cleaning water, a cleaning nozzle for spraying the cleaning water, a heater for heating the cleaning water, a spraying means for spraying the cleaning water in a mist state, and an air blown into the cleaning tank And control means for controlling the drive of the blowing means, wherein the control means blows air into the washing tank by the blowing means during operation of the spray means, and the temperature of the washing water is higher than a predetermined temperature. In the case, the dishwasher which controls so that the drive time of the said ventilation means becomes short . A cleaning tank, a cleaning pump for pressurizing the cleaning water, a cleaning nozzle for spraying the cleaning water, a heater for heating the cleaning water, a spraying means for spraying the cleaning water in a mist state, and an air blown into the cleaning tank And a control means for controlling the driving of the blowing means, wherein the control means blows air into the cleaning tank by the blowing means during operation of the spraying means, and the blowing means is a dish drying fan. A dishwasher combined with the above A temperature sensor for detecting the temperature of the cleaning water is provided, and when the control unit detects that the temperature of the cleaning water is equal to or lower than a predetermined temperature by the temperature sensor, the air is blown into the cleaning tank by the blowing unit. Item 3. A dishwasher according to item 1 or 2. When the control means detects that the temperature of the cleaning water is equal to or lower than a predetermined temperature by the temperature sensor, the controller energizes the heater to heat the cleaning water, and when the temperature of the cleaning water becomes equal to or higher than the predetermined temperature, The dishwasher according to claim 3, wherein the dishwasher is stopped. The dishwasher according to any one of claims 1 to 4, wherein the control means is configured to intermittently blow air by the blower means. The dishwasher according to any one of claims 1 to 5 , wherein the blowing means is configured to blow air toward the spraying means.

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