KR101151558B1 - Dishwasher - Google Patents

Abstract

A cleaning tank provided in the housing, inside the housing, for storing and cleaning the object to be cleaned, the outside of the housing and the inside of the cleaning tank, and a blowing path having a blower fan therein, and air discharged from the cleaning tank. Since a sterilization unit for sterilization is provided, the air in the washing tank is disinfected and discharged, so that no odor is emitted to the outside of the dishwasher even if the remnants etc. are left in the remnant filter after washing the dishes.

Description

Dishwasher {DISHWASHER}

The present invention relates to a dishwasher which sterilizes the object to be cleaned inside the cleaning tank.

The conventional dishwasher was used to sterilize the object to be cleaned and the like using, for example, heated washing water as described in JP-A-2000-189377 (Patent Document 1).

8 is a cross-sectional view of the dish washing machine described in Patent Document 1. FIG. The dishwasher is provided with a washing tank 102 for storing dishes 101 and the like to be cleaned, a dish basket 103 provided inside the washing tank 102, and storing the dish 101, and a dish basket 103. ), A cleaning nozzle 104 for spraying water onto the tableware 101 stored therein. In addition, the dishwasher includes a washing pump 105 for supplying water to the washing nozzle 104, a control unit 106 for controlling each step of washing, rinsing and drying, and a water supply for supplying water to the washing tank 102. Has a portion 107. Furthermore, the dishwasher includes a lid 108 which prevents the water inside the washing tank 102 from scattering to the outside, a heating unit 109 for heating the washing water, and a remnant for filtering the washing water. Has a filter 110.

The washing water supplied from the water supply unit 107 is heated in the heating unit 109, and is sprayed from the washing nozzle 104 to the dishware 101. As a result, foreign substances such as residues attached to the tableware 101 are mixed in the washing water. The foreign matter remains in the remnant filter 110. With this configuration, the conventional dishwasher sprays the heated washing water onto the dishware 101 to perform washing and sterilization.

However, in the above-described conventional structure, the tableware 101 is disinfected, but various germs propagate in the remnants remaining in the remnant filter 110. For this reason, if it is left to wash for several days after wash | cleaning the tableware 101, a bad smell will generate | occur | produce and attachment of the microorganisms to the tableware 101 will occur. As a result, the inside of the cleaning tank 102 had the problem that it became easy to become unsanitary.

The present invention solves the above problems, and even when the remnant is left in the remnant filter, the odor of the remnant is reduced to the outside of the dishwasher, and bacteria are attached to the dish, so that the inside of the washing tank is unsanitary. It is provided with a dishwasher which is reduced to be.

The dishwasher according to the present invention is provided with a housing, a cleaning tank provided inside the housing, for storing and cleaning the object to be cleaned, a blower path communicating with the outside of the housing and the inside of the cleaning tank, and having a blower fan therein; And a sterilizing unit for sterilizing the air discharged from the washing tank.

As a result, the air of the cleaning tank is disinfected and deodorized, and therefore, even if the remnants and the like are left in the remnant filter after washing the dishes, the odor coming out of the dishwasher is reduced. In addition, since the germs inside the washing tank are reduced by the germicidal bacteria, it is also suppressed that the germs adhere to the tableware.

1 is a cross-sectional view of the dish washer according to the first embodiment of the present invention;
2 is a cross-sectional view of the dish washer according to the second embodiment of the present invention;
3 is a cross-sectional view of the dish washing machine in the third embodiment of the present invention;
4 is a cross-sectional view of the dish washing machine in the fourth embodiment of the present invention;
5 is a cross-sectional view of the dish washing machine of the fourth embodiment;
6 is a cross-sectional view of the dish washing machine in the fifth embodiment of the present invention;
7 is a cross-sectional view of the dish washing machine of the above embodiment;
8 is a cross-sectional view of a conventional dishwasher.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings.

(Embodiment 1)

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the dishwasher in Embodiment 1 of this invention. The dishwasher includes a washing tank 2, a water supply unit 3 such as a water supply valve for supplying water to the washing tank 2, a washing drain pump 4, and a control unit inside the housing 1. Have 5). In addition, the dishwasher includes a dish basket (7), a rotary washing nozzle (8), and a non-rotating washing nozzle (9) on which inside of the washing tank (2), for example, a dish (6) that is to be cleaned is mounted. Has The rotary cleaning nozzle 8 is provided so that the center of rotation of the bottom part of the washing tank 2 becomes a center of rotation. The non-rotating washing nozzle 9 is provided on the inner wall side of the washing tank 2. The rotary washing nozzle 8 and the non-rotating washing nozzle 9 wash the dishes 6 by spraying the washing water onto the dishes 6 to be cleaned. The washing and draining pump 4 operates as a washing pump for pressurizing and supplying the washing water to the rotary washing nozzle 8 and the non-rotating washing nozzle 9 by an internal switching mechanism (not shown), and the washing water after washing the dishes. Perform both of the operations as a drain pump to drain the gas. Specifically, the forward and reverse directions of the rotational direction of the pump are switched. The control unit 5 controls each step of washing, rinsing and drying.

The dishwasher has a heater 10 at the bottom of the washing tank 2. The heater 10 heats the washing water in the washing tank 2 or the air in the washing tank 2. In the bottom part of the washing tank 2, the remnant filter 11 which filters washing water is provided. The washing water filtered by the remnant filter 11 enters and circulates through the washing water circulation path 12 into the washing drain pump 4.

The dishwasher is a blower path communicating with the intake port 13 provided below the outer wall of the housing 1 (hereinafter referred to as the left side in the drawing) and the air vent 14 provided below the inner wall of the front surface of the cleaning tank 2. Has 15. As a result, the outside of the housing 1 and the inside of the cleaning tank 2 communicate with each other by the air blowing path 15. The blowing fan 16 is provided inside the blowing path 15. When the blower fan 16 is driven, the outside air is sucked from the intake port 13 and sent to the inside of the cleaning tank 2 through the blower port 14.

The dish washer includes an exhaust path 17 communicating with an exhaust port 17 provided above the front outer wall of the housing 1 and an exhaust port 18 provided above the blower port 14 of the front inner wall of the cleaning tank 2 ( 19). As a result, the outside of the housing 1 and the inside of the cleaning tank 2 communicate with each other by the exhaust passage 19. Inside the exhaust path 19, the germicidal part 20 is provided. The outside air sent to the inside of the washing tank 2 by the blowing path 15 pushes the air inside the washing tank 2 from the discharge port 18. When the air pushed out of the discharge port 18 passes through the exhaust path 19, it is sterilized by the disinfecting unit 20 inside the exhaust path 19 and then exhausted to the outside of the housing 1.

Here, the germicidal part 20 is equipped with the germicidal filter 21 which has a photocatalyst which consists of a compound which has silver, for example, zirconium silver phosphate, and the irradiation part 22 which irradiates the germicidal filter 21 with light. . As a result, the germicidal unit 20 sterilizes bacteria and the like existing in the air and deodorizes by decomposing organic substances in the air. The irradiation unit 22 irradiates the germicidal filter 21 with light including a wavelength for exciting the photocatalyst. Moreover, the irradiation part 22 is comprised by arrange | positioning a some irradiation element (for example, light emitting diode) on a board | substrate.

Moreover, the odor detection part 23 which detects the grade of the odor inside the washing tank 2 is provided in the exhaust path 19. In this embodiment, although the odor detection part 23 is provided in the exhaust path 19, you may provide in the inside of the washing tank 2. As shown in FIG. In addition, by providing a plurality of odor detection units 23, the detection accuracy is improved.

In this embodiment, the irradiation part 22 is arrange | positioned so that light may be irradiated to the direction of the exhaust path 19, and light is irradiated to the germicidal filter 21. FIG. In addition, the irradiation part 22 may be arrange | positioned so that light may irradiate not only the disinfection filter 21 but the inside of the washing tank 2. As shown in FIG. In addition, although the wavelength of the light irradiated by the irradiation part 22 is preferable to be a visible light region, even if it is the light of the wavelength of an ultraviolet region, the disinfection or deodorization effect by silver can be improved.

Instead of the washing drain pump 4 of the present embodiment, a washing pump and a drain pump may be used. This increases the degree of freedom for piping for cleaning and drainage, installation of a pump, and the like.

In addition, in this embodiment, although the rotation cleaning nozzle 8 which has a rotation center in the substantially center of the bottom part of the cleaning tank 2 was demonstrated, a plurality of rotation cleaning nozzles 8 may be provided in the bottom part of the cleaning tank 2. You may provide. Moreover, in order to spray washing water to the to-be-cleaned objects, such as the upper and lower tableware 6, you may provide a some washing nozzle up and down. In addition, in this embodiment, although it described about the non-rotational washing nozzle 9, you may wash | clean a to-be-cleaned object only by the rotational washing nozzle 8. As shown in FIG.

The operation and action of the dishwasher configured as described above will be described below. First, the dishwasher starts operation by storing the dish 6 to be cleaned in the dish basket 7 inside the washing tank 2 and pressing a washing start button (not shown).

The dishwasher initially performs a washing step. In the washing step, the water supply part 3 is opened and water is supplied from the water supply pipe 24 to the cleaning tank 2. When a predetermined amount of water is supplied, the water supply part 3 is closed and water supply stops. The water supplied is sent to the rotary washing nozzle 8 and the non-rotating washing nozzle 9 which are washing units by the washing and draining pump 4, and is ejected as washing water. As a result, the dish 6 to be cleaned is washed. In addition, the rotary cleaning nozzle 8 is rotated by the reaction force when the washing water is jetted. As the rotary cleaning nozzle 8 rotates, the washing water spreads to every corner of the object to be cleaned, and the cleaning performance is increased. In addition, when the water supplied is heated and jetted by the heater 10, the washing performance is increased. When detergent is mixed with the washing water, the washing performance is further improved. When the washing is finished, the switching mechanism of the washing drainage pump 4 is switched to the drainage side, and the washing water is drained. Specifically, drainage is performed by making the rotation direction of the washing | cleaning drainage pump 4 into a direction opposite to the case where washing water is sent to a washing | cleaning part.

Next, a rinse step is performed. In the rinsing step, water supply is performed, and the water supplied is sprayed from the rotary cleaning nozzle 8 and the non-rotating cleaning nozzle 9 to the object to be cleaned by the washing drain pump 4 to rinse the object to be cleaned. The water which has rinsed the object to be cleaned is drained by the washing drain pump 4. In addition, the water supplied is heated by the heater 10 as needed. One set of operations consisting of these water supply operation, rinsing operation and drainage operation is the same as the washing step. In the rinsing step, one such set of operations is performed about three times. In the last rinsing operation, the water supplied is heated to 60 ° C to 70 ° C by the heater 10. As a result, the temperature of the object to be cleaned after the rinsing step is completed is increased. As a result, in the drying step performed after the rinsing step, the object to be cleaned is dried in a short time.

Next, a drying step is performed. The air inside the cleaning tank 2 is at high temperature and high humidity by the last rinsing operation. In the drying step, it is first necessary to discharge such high-temperature, high-humidity air to introduce external air into the washing tank 2. Here, the blowing fan 16 is driven for a predetermined time. As a result, outside air is introduced into the cleaning tank 2 through the air blowing path 15 and the air vent 14 from the air inlet 13. At the same time, the air of high temperature and high humidity is exhausted from the discharge port 18 to the outside of the housing 1 through the exhaust path 19 and the exhaust port 17. Arrows in FIG. 1 indicate this air flow.

The object to be cleaned is dried by air introduced into the cleaning tank 2. In addition, drying performance is improved by heating the air introduced into the cleaning tank 2 by the heater 10. As the object to be cleaned is dried, the air inside the cleaning tank 2 becomes high humidity. Introduction and discharge of the outside air are repeated appropriately, and the object to be cleaned is dried.

Here, the operation | movement which the air discharged | emitted from the inside of the washing tank 2 disinfects by the germicidal part 20 in the exhaust path 19 is demonstrated. In the germicidal unit 20, the germicidal filter 21 is irradiated from the plurality of irradiation units 22 to generate hydroxy radicals having a germicidal deodorizing effect. The air inside the cleaning tank 2 is discharged from the discharge port 18 and passes through the exhaust path. The discharged air passes through the germicidal filter 21 and is sterilized and deodorized by the action of hydroxy radicals. Therefore, the air which has been sterilized and deodorized is exhausted outside the housing 1. In addition, since the germs inside the washing tank 2 also decrease, the unsanitary state inside the washing tank 2 due to the adherence of the germs to the tableware 6 left inside the washing tank 2 is suppressed.

Moreover, what is necessary is just to operate the germicidal part 20 when the air discharged from the washing tank 2 passes, ie, when the blowing fan 16 is driving. In addition, you may operate the germicidal part 20 according to the grade of the bad smell which the odor detection part 23 detected. For example, when there is little odor, the sterilization part 20 is stopped, and when there is much odor, it is also possible to operate the sterilization part 20 after that. In addition, when the odor detection unit 23 detects that there are many odors, the blowing ability of the blower fan 16 may be lowered. Thereby, the quantity of air passing through the germicidal part 20 is reduced, and the efficiency of germicidal deodorization is improved.

As described above, the series of operations of the dishwasher is finished through the drying step including the washing step, the rinsing step, and the sterilization deodorization. On the other hand, all or part of the dishes 6 in the cleaning tank 2 may be left inside the cleaning tank 2 until the user needs it. Here, when the remainder etc. remain in the remainder filter 11, odor may generate | occur | produce from a remainder and may be accumulated in the inside of the washing tank 2. As shown in FIG. In addition, the bacteria generated in the remnants may be attached to the tableware 6. For this reason, the dishwasher of the present embodiment has a sterilization step of disinfecting and deodorizing the air inside the washing tank 2, unlike a normal series of operations. The sterilization step is executed when the odor detection unit 23 detects that there is much odor inside the cleaning tank 2. The operation of the sterilization step is the same as the drying step.

(Embodiment 2)

It is sectional drawing of the dishwasher in Embodiment 2 of this invention. In the present embodiment, the difference from the first embodiment is that an exhaust fan 25 is added to the inside of the exhaust path 19 of the first embodiment. Since the other structure is the same as that of Embodiment 1, the same code | symbol is used about the same component and detailed description is abbreviate | omitted.

In FIG. 2, an exhaust fan 25 is provided between the disinfection section 20 and the exhaust port 18 inside the exhaust path 19. In addition, the exhaust fan 25 can switch the flow direction of air by changing the rotation direction. Hereinafter, in this embodiment, the air (flow direction shown by the arrow of FIG. 2) which flows air from the discharge port 18 to the exhaust port 17 is a positive direction, and the air flows from the exhaust port 17 to the discharge port 18 on the contrary. The sending direction is described in the reverse direction. In addition, the blowing ability of the exhaust fan 25 uses what is lower than the blowing ability of the blowing fan 16.

The operation and action of the dishwasher configured as described above will be described below. In addition, the cleaning step, the rinsing step, the drying step only by driving the blower fan 16, and the sterilization step only by driving the blower fan 16 are the same as those in the first embodiment.

In the drying step, in addition to driving the blower fan 16, by driving the exhaust fan 25 in the forward direction, air in the cleaning tank 2 is discharged in a short time compared to driving only the blower fan 16. do. This shortens the time required for drying.

Here, it is difficult to normally flow air using a fan, that is, to flow air at a small amount of air using the fan. In this embodiment, in addition to the drive of the blower fan 16, the air inside the washing tank 2 is discharged slowly by driving the exhaust fan 25 in the reverse direction. The flow of air by the blower fan 16 and the flow of air by the exhaust fan 25 are opposed to each other, but the blower capacity of the blower fan 16 is larger, and consequently the positive direction, that is, the exhaust port. Air flows slowly in the exhaust direction from (17). In the drying step and the sterilization step, by passing air slowly through the sterilization unit 20, the efficiency of the sterilization deodorization is improved.

In addition, the blowing fan 16 has a large blowing ability and a driving sound is also large. The exhaust fan 25 has a small blowing capacity and a low driving sound. Therefore, when the drying step or the sterilization step is executed by driving the exhaust fan 25 only in the forward direction, the operation sound of the dish washing machine is reduced. As a result, even when the dishwasher is operated at bedtime at night, sleep is not disturbed.

(Embodiment 3)

It is sectional drawing of the dishwasher in Embodiment 3 of this invention. In this embodiment, the same code | symbol is used about the same component as Embodiment 1, 2, and detailed description is abbreviate | omitted.

The dishwasher of this embodiment communicates the exhaust port 17 provided above the front outer wall of the housing 1, and the discharge port 26 provided above the blower opening 14 of the front inner wall of the washing tank 2. It has an exhaust path 27. As a result, the outside of the housing 1 and the inside of the cleaning tank 2 communicate with each other by the exhaust passage 27. Moreover, the dishwasher of this embodiment has the circulation port 28 provided above the blow port 14 and below the discharge port 26, and the circulation path 29 which communicates with the exhaust path 27. As shown in FIG. As a result, the exhaust path 27 and the inside of the cleaning tank 2 communicate with each other by the circulation path 29. Inside the circulation path 29, a circulation fan 30 is provided. Moreover, the disinfection part 20 is provided in the circulation path 29.

Moreover, the circulation exhaust switching valve 31 is provided in the connection part of the exhaust path 27 and the circulation path 29. The circulation exhaust switching valve 31 can switch the path so as to open either the exhaust path 27 or the circulation path 29. In addition, the circulation exhaust switching valve 31 may open both the exhaust path 27 and the circulation path 29. In this case, the circulation exhaust switching valve 31 flows through the exhaust path 27 and the circulation path 29 by adjusting the cross-sectional area through which air at the connecting portion of the exhaust path 27 and the circulation path 29 passes. The amount of air can be adjusted.

Further, the odor detection unit 23 is provided in the exhaust path 27 between the circulating exhaust switching valve 31 and the discharge port 26. Moreover, although the odor detection part 23 was provided in the exhaust path 27, you may provide in the inside of the washing tank 2 and the inside of the circulation path 29. As shown in FIG.

The operation and action of the dishwasher configured as described above will be described below. First, the washing step and the rinsing step are the same as in the first embodiment. In addition, the drying step operates in the same manner as in the first embodiment by switching the circulating exhaust switching valve 31 to open only the exhaust path 27. That is, by driving the blower fan 16, outside air is introduced into the washing tank 2 through the blowing path, and the air inside the washing tank 2 is exhausted through the exhaust path.

The sterilization step in the present embodiment is executed by an operation different from the sterilization step in the first embodiment. The sterilization step in the present embodiment will be described below. For example, when it detects that there are many odors in the inside of the washing tank 2 by the odor detection part 23, a sterilization step is performed.

In the sterilization step, the circulation exhaust switching valve 31 is first switched to open only the circulation path 29. Thereafter, by driving the circulation fan 30, the air inside the cleaning tank 2 circulates inside the circulation path 29 and is disinfected. In other words, the air inside the cleaning tank 2 enters the exhaust path 27 from the discharge port 26. The circulating exhaust switching valve 31 at the connecting portion of the exhaust path 27 and the circulation path 29 is switched to open the circulation path 29. For this reason, air then enters the circulation path 29. The circulation path 29 has the germicidal part 20 provided with the germicidal filter 21 and the irradiation part 22. The air is sterilized by the sterilization unit 20 and returned to the inside of the washing tank 2 again through the circulation port 28. Sterilization is performed by repeating the circulation of air indicated by the arrow in FIG. 3. In addition, similarly to Embodiment 1, deodorization is performed simultaneously with disinfection.

In addition, although the case where the circulation exhaust switching valve 31 was switched so that only the circulation path 29 was opened was demonstrated, the circulation exhaust switching valve 31 may open both the exhaust path 27 and the circulation path 29. It may be. That is, the opening degree of the circulation exhaust switching valve 31 can be made into the intermediate state. In this case, the drying step and the sterilization step are executed at the same time. Moreover, in the dishwasher which does not have the circulation exhaust switching valve 31, both the exhaust path 27 and the circulation path 29 are always open. In other words, the drying step and the sterilization step can always be performed simultaneously. In addition, by switching the opening degree of the circulating exhaust switching valve 31, the cross-sectional area communicating with the exhaust path 27 and the cross-sectional area communicating with the circulation path 29 can be changed. That is, by adjusting the opening degree of the circulation exhaust switching valve 31, the ratio of the amount of air flowing through the exhaust path 27 and the amount of air flowing through the circulation path 29 can be changed. Thereby, the ratio of both can be adjusted, performing a drying step and a disinfection step simultaneously.

Adjustment of the ratio of a drying step and a disinfection step is performed based on the detection result of the odor detection part 23, for example. That is, the degree of sterilization deodorization can be adjusted according to the degree of odor. For this reason, sterilization deodorization is performed efficiently. Moreover, drying is also performed efficiently.

(Fourth Embodiment)

4 and 5 are cross-sectional views of the dish washing machine in the fourth embodiment of the present invention. In this embodiment, the point different from Embodiment 3 is that the communication path 32 which communicates the circulation path 29 and the exterior of the housing 1 of Embodiment 3 was added, and the circulation exhaust switching valve 31 It does not have a point. Since the other structure is the same as Embodiment 3, the same code | symbol is used about the same component and detailed description is abbreviate | omitted.

The dishwasher of this embodiment has the communication port 33 provided below the front outer wall of the housing 1, and the communication path 32 which communicates with the circulation path 29. As shown in FIG. As a result, the outside of the housing 1 and the circulation path 29 communicate with each other by the communication path 32. Moreover, the dishwasher of this embodiment has the circulation port 28 provided above the blow port 14 and below the discharge port 26, and the circulation path 29 which communicates with the exhaust path 27. As shown in FIG. As a result, the exhaust path 27 and the inside of the cleaning tank 2 communicate with each other by the circulation path 29.

In addition, the sanitizing unit 20 and the circulation fan 30 are provided inside the circulation path 29. The germicidal part 20 is provided in the exhaust path 27 side, and the circulation fan 30 is provided in the circulation port 28 side. In addition, the circulation fan 30 can also flow air in a reverse direction by switching the rotation direction of a fan. Hereinafter, in this embodiment, the direction which flows air from the germicidal part 20 to the circulation fan 30 is described as a forward direction, and the direction which flows air from the circulation fan 30 to the germicidal part 20 in a reverse direction is described. do.

In addition, the communication path 32 communicates with the communication port 33 with respect to the circulation fan 30 from the side opposite to the exhaust path 27. The circulation communication switching valve 34 is provided in the connection part of the circulation path 29 and the communication path 32. The circulation communication switching valve 34 switches whether the circulation fan 30 and the communication port 33 communicate with each other, or the circulation fan 30 and the circulation port 28 communicate with each other. Moreover, the circulation communication switching valve 34 communicates with both the circulation fan 30, the communication port 33, and the circulation port 28 by adjusting the opening degree of the valve, and also flows into each of them. You can adjust the amount.

The operation and action of the dishwasher configured as described above will be described below. First, the washing step and the rinsing step are the same as in the third embodiment, that is, the same as the first embodiment.

First, as shown in FIG. 4, the case where the circulation communication switching valve 34 is switched so that the circulation fan 30 and the circulation port 28 may communicate is demonstrated. In the sterilization step, the circulation fan 30 is driven so that air flows in the forward direction (the direction indicated by the arrow in FIG. 4). Thereby, the air in the washing tank 2 discharged from the discharge port 26 passes through the exhaust path 27, the disinfecting part 20, the circulation fan 30, and the circulation port 28 in sequence, and then again It returns to the inside of the bath 2. In this way, air circulates and sterilization is performed.

On the other hand, in the drying step, outside air is introduced into the washing tank 2 by the driving of the blower fan 16, and the air inside the washing tank 2 is exhausted from the exhaust port 17. Here, when the circulation fan 30 is driven so that air flows in the reverse direction, the air inside the cleaning tank 2 is also discharged from the circulation port 28. Air inside the cleaning tank 2 discharged from the circulation port 28 passes through the circulation fan 30, the exhaust path 27, and the exhaust port 17 in sequence, and is exhausted to the outside of the housing 1. . Thereby, the humid air inside the washing tank 2 is exhausted quickly, and drying performance is improved.

Next, as shown in FIG. 5, the case where the circulation communication switching valve 34 is switched to communicate with the circulation fan 30 and the communication port 33 will be described. In the sterilization step, the circulation fan 30 is driven so that air flows in the forward direction (direction indicated by the arrow in FIG. 5). Thereby, the air inside the washing tank 2 discharged from the discharge port 26 passes through the exhaust path 27, the disinfecting part 20, the circulation fan 30, and the communication port 33 in sequence, and the housing It is exhausted to the outside of (1). Only the sterile air is exhausted in this way. In addition, since the circulation fan 30 is driven in the forward direction, the air inside the cleaning tank 2 is sucked from the discharge port 26 and the outside air is also sucked from the exhaust port 17. Therefore, although the exhaust port 26 and the exhaust port 17 are in communication, the air which has not been disinfected is not exhausted from the exhaust port 17.

On the other hand, in the drying step, outside air is introduced into the washing tank 2 by the driving of the blower fan 16, and the air inside the washing tank 2 is exhausted from the exhaust port 17. Here, when the circulation fan 30 is driven so that air flows in the reverse direction, the air from the inside of the washing tank 2 and the outside air sucked from the communication port 33 are mixed. Although the air inside the washing tank 2 is high temperature and high humidity, by mixing with outside air, temperature becomes low and humidity also becomes low. Thereby, the high temperature, high humidity air is not discharged | emitted from the exhaust port 17, and a safe dishwasher can be obtained.

(Embodiment 5)

6 and 7 are cross-sectional views of the dish washing machine in the fifth embodiment of the present invention. In this embodiment, the difference from Embodiment 4 is that the communication port 33 is provided above the front outer wall of the housing 1. In addition, the difference from Embodiment 4 is that the communication path 32 is provided in the exhaust path 27 side with respect to the circulation fan 30. Also, the difference from the fourth embodiment is whether the circulation communication switching valve 34 communicates with the circulation fan 30 and the outlet 26, or communicates with the circulation fan 30 and the communication port 33. Switch. In addition, the circulation communication switching valve 34 communicates with both the circulation fan 30, the discharge port 26, and the communication port 33 by adjusting the opening degree of the valve, and further controls the flow of air. You can adjust the amount. Since other configurations are the same as those in the fourth embodiment, the same reference numerals are used for the same components, and detailed description thereof will be omitted.

The operation and action of the dishwasher configured as described above will be described below. In addition, the washing step and the rinsing step are the same as in the fourth embodiment, that is, the same as the first embodiment. In addition, as in Embodiment 4, the direction in which air flows from the bactericidal unit 20 to the circulation fan 30 is described in the forward direction, and the direction in which air flows from the circulation fan 30 to the germicidal unit 20 in the reverse direction. do.

First, as shown in FIG. 6, the case where the circulation communication switching valve 34 is switched so that the circulation fan 30 and the discharge port 26 may communicate is demonstrated. In the sterilization step, the circulation fan 30 is driven so that air flows in the forward direction (the direction indicated by the arrow in FIG. 6). Thereby, the air inside the washing tank 2 discharged from the discharge port 26 passes through the exhaust path 27, the disinfecting part 20, the circulation fan 30, and the circulation port 28 in sequence, and again. Return to the inside of the washing tank (2). In this way, air circulates and sterilization is performed. In addition, since the circulation fan 30 is driven in the forward direction, the air inside the cleaning tank 2 is sucked from the discharge port 26 and the outside air is also sucked from the exhaust port 17. Therefore, although the exhaust port 26 and the exhaust port 17 are in communication, the air which has not been disinfected is not exhausted from the exhaust port 17.

On the other hand, in the drying step, outside air is introduced into the washing tank 2 by the driving of the blower fan 16, and the air inside the washing tank 2 is exhausted from the exhaust port 17. Here, when the circulation fan 30 is driven so that the air flows in the reverse direction, the air inside the cleaning tank 2 is also discharged from the circulation port 28, and the circulation fan 30 and the exhaust path 27 Then, the exhaust port 17 is sequentially passed through and exhausted to the outside of the housing 1. Thereby, the humid air inside the washing tank 2 is exhausted quickly, and drying performance is improved.

Next, as shown in FIG. 7, the case where the circulation communication switching valve 34 is switched so that the circulation fan 30 and the communication port 33 may communicate is demonstrated. When the blower fan 16 is driven, outside air is introduced into the washing tank 2, and the air inside the washing tank 2 is exhausted from the exhaust port 17. Here, when the circulation fan 30 is driven so that air flows in the forward direction (direction indicated by the arrow in FIG. 7), outside air is also introduced into the washing tank 2 from the communication port 33, and the washing tank The air inside (2) is exhausted from the exhaust port 17. This is effective in the drying step because the high humidity air inside the cleaning tank 2 is quickly exhausted and the drying performance is improved.

On the other hand, when the circulation communication switching valve 34 is switched so that the circulation fan 30 and the communication port 33 communicate with each other, the cleaning fan 2 is driven by driving the circulation fan 30 so that air flows in the reverse direction. The air inside is discharged from the circulation port 28 and is exhausted from the communication port 33 to the outside of the housing 1. As a result, the exhausted air is disinfected. Furthermore, at the same time as the exhaust by the circulation fan 30, the exhaust by the driving of the blower fan 16 is also performed. This is effective in the drying step because the high humidity air inside the cleaning tank 2 is quickly exhausted and the drying performance is improved.

1 housing 2 cleaning tank
3: tableware 15: ventilation path
16: blower fan 19, 27: exhaust path
20: sterilization unit 21: sterilization filter
22: investigator 23: odor detection unit
25 exhaust fan 29 circulation path
30: circulation fan 31: circulation exhaust switching valve
32: communication path 34: circulation communication switching valve

Claims (11)

A housing,
A washing tank provided inside the housing for storing and cleaning the object to be cleaned;
A blowing path communicating with the outside of the housing and the inside of the cleaning tank and having a blowing fan therein;
A sterilizing unit for sterilizing the air discharged from the cleaning tank;
An exhaust path communicating between the inside of the cleaning tank and the outside of the housing;
A circulation path communicating with the exhaust path and the inside of the cleaning tank and having a circulation fan therein;
The bactericidal part is provided inside the circulation path.
dish washer. The method of claim 1,
It further has an exhaust path communicating the inside of the cleaning tank and the outside of the housing,
The germicidal part is provided inside the exhaust path.
dish washer. The method of claim 2,
An exhaust fan is provided inside the exhaust path.
dish washer. delete The method of claim 1,
A circulation exhaust switching valve is further provided at a connection portion between the circulation path and the exhaust path.
dish washer. The method of claim 1,
At least one of the cleaning tank and the circulation path includes an odor detection unit.
dish washer. The method of claim 1,
Further comprising a communication path for communicating the circulation path and the outside of the housing
dish washer. The method of claim 7, wherein
It is further provided with a circulation communication switching valve in the connection part of the said circulation path and the said communication path,
The circulation fan is capable of switching between forward rotation and reverse rotation
dish washer. The method of claim 8,
The circulation communication switching valve is provided on the exhaust path side with respect to the circulation fan.
dish washer. The method of claim 8,
The circulation communication switching valve is provided on the side opposite to the exhaust path with respect to the circulation fan.
dish washer. The method of claim 1,
The sterilization unit includes a sterilization filter having a photocatalyst and an irradiation unit for irradiating light to the sterilization filter.
dish washer.

Images