JPH0779906A - Dish washing and drying machine - Google Patents

Abstract

PURPOSE:To prevent bad odor of fish, meat and oil of leavings stuck to dishes from leaking out of a dish washing and drying machine by deodorizing. CONSTITUTION:The air circulation route composed of a drying heater 20, a washing tank 2, a dehumudifying heat exchanger 25 and a circuit duct 28 through which hot air circulates and flows back to the washing tank 2 is formed and a deodorant catalyst 27 is equipped in this route. The bad odor of leavings stuck to dishes smells in the drying process after dishing and rinsing is killed by the deodorant catalyst 27 equipped in this route, which prevents from leaking of bad odor so that anyone in the kitchen where the dish washing and drying machine is furnished does not smell bad odor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dish washer / dryer, and in particular, it is provided with a deodorizing device and a structure for preventing the odor emitted from fish, meat, etc. of food scraps adhering to tableware from being discharged outside during the drying process. It relates to a dishwasher.

[0002]

2. Description of the Related Art Conventionally, a drying mechanism of a dishwasher, as described in, for example, Japanese Patent Application Laid-Open No. 2-124125, sucks outside air into a heater portion by a blower fan and heats the sucked outside air with a heater to generate hot air. , The hot air was blown to the dishes arranged in the washing tank to dry the dishes.
Then, the hot air containing moisture after being used for the drying process is configured to be discharged to the outside of the machine through an exhaust port provided in the upper part of the cleaning tank.

[0003]

In the above-mentioned prior art, in order to discharge the hot air after drying the tableware from the exhaust port to the outside of the machine, food residues attached to the tableware, such as fish, meat, The odor emitted from eggs and the like was exhausted outside the machine together with the hot exhaust air. For this reason, the smell of fish or the like is scattered in the kitchen where the dishwasher is placed, and there is a problem that the person in the vicinity of the dishwasher feels uncomfortable and that the kitchen is unsanitary.

The object of the present invention is to solve the above-mentioned problems of the prior art. It removes the odor from fish, meat and eggs of food residue attached to the dishes and removes the odor from the dishwasher. An object of the present invention is to provide a dishwasher equipped with a deodorizing device and a structure that does not discharge it out of the machine. Another object of the present invention is to provide a dishwasher / dryer equipped with a deodorizing device for effectively removing the odor emitted from the food residue attached to the dishes in the washing tank.

[0005]

According to the present invention, there is provided a washing tank in which dishes are placed, a means for spraying washing water on the dishes, and a hot air delivery section for blowing hot air into the washing tank to dry the washed dishes. And a circulating air passage that circulates the feeding of hot air to the cleaning tank and the discharge of hot air from the cleaning tank via the hot air delivery unit, and the circulating air passage has a drying heater for generating hot air. Disclosed is a dishwasher equipped with a hot air blowing means and a deodorizing device provided with a deodorizing material.

Further, according to the present invention, in the dish washer / dryer, the hot dry air is blown to the drying heater, the washing tank, and the dehumidifying heat exchanger, and a circulating air passage is circulated to the drying heater and the washing tank again. A deodorizing device using a deodorizing catalyst, activated carbon, or the like as a deodorizing material is installed in a part of the circulation path of the hot air.

Further, in the present invention, the deodorizing catalyst in the above deodorizing device is installed in the central portion of the drying heater in the circulation air passage, and the hot air passing through the deodorizing catalyst and the deodorizing catalyst are heated to a high temperature by the drying heater. It is configured.

Further, according to the present invention, the deodorizing catalyst in the above deodorizing device is installed immediately after the drying heater in the circulation path of the dry hot air so that the hot air passing through the deodorizing catalyst is heated to a high temperature by the drying heater. It is the one.

[0009]

In the above construction of the dishwasher / dryer, the hot air heated by the drying heater in the drying step is sent to the washing tank, and the hot air is blown onto the tableware to dry the tableware. Then, the hot air that is obtained by drying the tableware and moistening the water is sent to the dehumidifying heat exchanger, is cooled by the outside air cooling air, and is condensed and dehumidified. Further, the dehumidified air is heated by a drying heater and then blown again to the cleaning tank to be used for drying.
In this way, a deodorizing device using a deodorizing catalyst or activated carbon as a deodorizing material is installed in the circulation air passage that circulates dry hot air.
The deodorizer removes the odor from food residue attached to the tableware, such as fish, meat, and eggs. This prevents the smell of fish and other substances from spreading to the kitchen where the dishwasher is placed.

Further, the deodorizing catalyst is installed in the center of the drying heater, and the hot air and the catalyst passing through the deodorizing catalyst are heated to a high temperature by the heat transfer and the radiant heat of the drying heater to improve the deodorizing performance of the deodorizing catalyst. Improve. As a result, the odor contained in the circulating dry hot air can be sufficiently deodorized.

By providing the deodorizing catalyst in the hot air circulating air passage immediately after the drying heater, the hot air passing through the deodorizing catalyst can have the highest temperature in the circulating air passage. The deodorizing performance can be improved, and the odor contained in the circulating dry hot air can be effectively deodorized.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing the overall structure of a dishwasher / dryer according to a first embodiment of the present invention. In FIG. 1, 1 is an outer frame main body of a dishwasher / dryer, 2 is a cleaning tank provided inside the outer frame main body 1, 3 and 4 are dish baskets stored in and out of the cleaning tank 2, 5, 6 Is a tableware arranged in the tableware baskets 3 and 4, 7 is a cleaning motor for driving the cleaning pump 8, 8 is a cleaning pump, 9 is an injection nozzle provided at the bottom of the cleaning tank 2, 10
Is an injection port of the injection nozzle 9, 11 is an injection nozzle provided above the cleaning tank 2, 12 is a water supply tower for sending the cleaning water from the cleaning pump 8 to the injection nozzle 11, and 13 is provided on the bottom surface of the cleaning tank 2. The residual food filter A is a food residue accumulated in the residual food filter 13 by washing and rinsing, that is, a residual food. 14 is a cleaning heater for heating the cleaning water, 15 is a heater tank surrounding the cleaning heater 14, 16 is the heater tank 1
5 is a pump casing that is connected to the cleaning pump 5 and surrounds the cleaning pump 8. Reference numeral 17 is a blower fan that blows hot air for drying dishes to the cleaning tank 2, 18 is a blower fan casing surrounding the blower fan 17, 19 is a heater case connected to the fan casing 18, and 20 is a ring installed in the heater case 19. A shaped drying heater, 21 a blower duct for guiding the hot air heated by the drying heater 20 to the cleaning tank 2, 22 a hot air blower port provided in the lower portion of the cleaning tank 2, 23 an exhaust duct from the cleaning tank 2, 24 Is an exhaust port provided above the cleaning tank 2, 25 is a dehumidifying heat exchanger for dehumidifying hot air, 26 is a deodorizing duct provided between the exhaust duct 23 and the dehumidifying heat exchanger 25, and 27 is a deodorizing duct. A deodorizing catalyst installed inside 26, and 28 is a circulation duct for hot air that connects from the dehumidifying heat exchanger 25 to the fan casing 18. Above fan casing 1
8, the heater case 19, the blower duct 21, the cleaning tank 2, the exhaust duct 23, the dehumidifying heat exchanger 25, and the circulation duct 28 constitute a circulating air passage for hot air to the cleaning tank 2. Here, the circulation air passage is defined excluding the air passage in the cleaning tank, but it may be functionally considered to include the air passage in the cleaning tank. 29 is a dehumidifying water receiver provided below the dehumidifying heat exchanger 25, B is a dehumidifying water drop, 3
Reference numeral 0 denotes a drain hose connected to the dehumidifying water receiver 29 and the heater tank 15. Reference numeral 31 is a cooling air passage plate provided on the back surface of the outer frame body 1, 31a is a cooling air exhaust port provided in the cooling air passage plate 31, and 32 is cooling air between the dehumidifying heat exchanger 25 and the cooling air passage plate 31. A cooling duct (details will be described with reference to FIGS. 4 and 5) for sending outside air cooling air to the passage, and 33 is an opening / closing for inserting and removing the tableware basket 3 in which the tableware 5 provided on the front surface of the cleaning tank 2 is placed. It's a door. Reference numeral 65 is a thermostat (90 ° C.) (shown in FIG. 6) for preventing heating. The same reference numerals or symbols throughout the drawings indicate the same or corresponding parts.

FIG. 2 is a perspective view showing the shape of the deodorizing catalyst 27 of FIG. The deodorizing catalyst 27 is a honeycomb type,
Many ventilation small holes 27a of about 1.5 mm square are
It has a penetrating structure as indicated by a broken line in b. The component of the deodorizing catalyst 27 is, for example, manganese dioxide. FIG. 3 is a perspective view showing a state in which the deodorizing catalyst 27 of FIG. 1 is installed in a deodorizing duct 26 provided between the exhaust duct 23 and a dehumidifying heat exchanger 25, which is a part of a circulating hot air passage. Is. In FIG. 3, the deodorizing catalyst 27 is configured such that its outer shape is installed inside the deodorizing duct 26 without any gap, and the front surface 26 a of the deodorizing duct 26 has the dehumidifying heat exchanger 25.
It is fixed to the upper surface of the. The air outlet 23a of the exhaust duct 23 is connected to the deodorizing duct 26.

FIG. 4 is a sectional view showing the structure of a cooling fan and a cooling fan casing for air-cooling the dehumidifying heat exchanger 25 of FIG. In FIG. 4, 1a is a bottom plate of the outer frame body 1, 34 is a double-sided fan disk having the blades of the blower fan 17 on one surface, and 35 is a cooling fan having cooling fan blades on the other surface of the double-sided fan disk 34. , 36 are fan motors for rotating both the blower fan 17 and the cooling fan 35, and 37
Is a motor shaft of a fan motor 36, and a double-sided fan disk 34 having a blower fan 17 and a cooling fan 35 on both sides is attached to the motor shaft 37. 38 is a double-sided fan disk 3
4, a partition casing for dividing the air passages of the blower fan 17 and the cooling fan 35 provided along the outer peripheral surface of 4, a cooling fan casing 39 surrounding the cooling fan 35, 40 a fan motor 36 at the bottom of the outer frame body 1. The motor holder is fixed to the face plate 1a, 41 is a fixing screw, and 42 is an outside air intake duct for sucking outside air into the cooling fan casing 39 as indicated by a broken arrow.

FIG. 5 is a side sectional view showing the structure of the cooling duct shown in FIG. In FIG. 5, reference numeral 43 is an intake port of the outside air intake duct.

FIG. 6 is a connection diagram of the electric circuit of FIG. 1 and a control circuit (microcomputer). In FIG. 6, 60 is a control circuit (microcomputer), 61 is a power switch, 62 is a drain motor, 6
3 is a door switch, 64 is a water supply valve, and 65 is a thermostat (90 ° C) for preventing heating.

Next, the operation of the first embodiment will be described. The dishwasher / dryer of this embodiment performs washing, rinsing and drying of dishes. Further, the odor contained in the hot air in the cleaning tank is deodorized during the drying process.

In order to wash the dishes, the opening / closing door 33 of FIG. 1 is tilted horizontally to open, and the dishes 5 and 6 are placed in the dish baskets 3 and 4,
Cleaning water is poured into the heater tank 15, and the opening / closing door 33 is closed, and at the same time, dishwashing detergent is added. Then, the cleaning heater 14 is energized to heat the cleaning water stored in the heater tank 15. Then, the washing motor 7 is energized to drive the washing pump 8. When the cleaning pump 8 is driven, the heater tank 15
The washing water of hot water is sprayed from the spray nozzle 9 and the spray nozzle 11 and sprayed on the dishes 5 and 6 to wash the dishes. For rinsing dishes, drain the cleaning water from the drain hose 30
After the water is drained from the tank, rinse water is poured into the heater tank 15 again, and the rinse water is heated by the cleaning heater 14 to become warm water. The hot water is sprayed onto the dishes 5 and 6 from the spray nozzle 9 and the spray nozzle 11 by the cleaning pump 8 as in the cleaning. When the rinsing is finished, the rinsing water is drained and then the drying is performed. The washing of the food is, for example, once for 30 minutes, the rinsing is performed twice for 15 minutes, and the drying is once for about 20 minutes.

The tableware is dried by energizing the drying heater 20.
This is performed by rotating the blower fan 17 and the cooling fan 35 by driving the fan motor 36. When the blower fan 17 is rotated in FIG.
The air is blown from the heater case 19 to the heater case 19 and is heated by the drying heater 20 to become high-temperature hot air. The hot air is blown from the heater case 19 through the air duct 21 into the cleaning tank 2 through the air outlet 22. As shown in FIG. 1, the hot air flows in the cleaning tank 2 from the lower side to the upper side in the arrow direction. The hot air comes into contact with the dishes 5 and 6 to dry the dishes. The drying temperature in the cleaning tank 2 is set to 60 ° to 80 °. Due to the drying of the tableware, the hot air that has absorbed moisture from the tableware and is moist is discharged from the exhaust port 24, passes through the exhaust duct 23, and is blown into the deodorizing duct 26. The hot air blown to the deodorizing duct 26 passes through the ventilation small holes 27a of the deodorizing catalyst 27 shown in FIGS. 2 and 3, and is then blown to the dehumidifying heat exchanger 25. On the other hand, the outside air is taken in through the intake port 43 by the cooling fan 35 shown in FIG. 5, blown through the outside air intake duct 42, passes through the cooling air passage between the dehumidifying heat exchanger 25 and the cooling air passage plate 31, The air is exhausted from the cooling air exhaust port 31a.

In FIG. 1, while the hot air blown to the dehumidifying heat exchanger 25 passes through the heat exchanger 25, the cooling fan 3
The heat exchanger 2 is cooled by the outside air cooling air blown in 5
Dehumidified water droplets B are generated on the cooling surface of No. 5 and dehumidified. The dehumidified water droplets B pass through the cooling surface, flow down, are collected in the dehumidified water receiver 29, and are then discharged from the drain hose 30 to the outside of the machine. Next, the deodorizing operation will be described.

In FIG. 1, when the dishes 5 and 6 are washed and rinsed by spraying warm water with the spray nozzles 9 and 11 in the cleaning tank 2, food residue, that is, the residual food A is the bottom of the cleaning tank 2. It accumulates in the residual food filter 13 provided in. Further, since the hot water is sprayed by the spray nozzles 9 and 11 to wash the tableware, the hot water with which the food residue is washed is repeatedly sprayed on the tableware and the wall surface of the washing tank 2. As described above, when the cleaning and rinsing are completed, the cleaning tank 2 is filled with the odor emitted from the residual food A accumulated in the residual food filter 13 and the odor dissolved in the warm water used to wash the food residue. .

Therefore, in the drying, as described above, the hot air blown from the blower port 22 to the cleaning tank 2 flows in the cleaning tank 2 from the lower side to the upper side indicated by the arrow. Along with the flow of the hot air, the odor emitted from the residual food A and the odor emitted from the jetted hot water move to the exhaust port 24 above the cleaning tank 2. The hot air containing the odor exits the exhaust port 24, passes through the exhaust duct 23, and flows into the deodorizing duct 26. And the hot air is
The deodorizing catalyst 27 passes through the ventilation small holes 27a. Odorous components contained in the hot air (eg, methylamine of fish, methyl mercaptan of meat, hydrocarbons and acetaldehyde of fats and oils) rapidly combine with oxygen while passing through the ventilation holes 27a of the deodorizing catalyst 27, that is, Combustion oxidation is performed to deodorize. The hot air after deodorization is blown to the dehumidifying heat exchanger 25, cooled and dehumidified as described in the above drying, returned to the blower fan 17 through the circulation duct 28, and again heated by the drying heater 20. The air is blown into the cleaning tank 2 through the air duct 21. Thus, the odorous components contained in the hot air are removed by repeating the deodorizing action of the deodorizing catalyst 27.

As described above, according to the first embodiment, the smell of food residue attached to the tableware, that is, the odor emitted from the leftovers such as fish, meat and oil, is provided in the hot air circulating air passage in the drying process. Since the deodorization is performed by passing it through the deodorization catalyst 27, the smell of fish, meat, etc. will not be discharged to the outside of the machine, and the person in the kitchen where the dishwasher is placed will feel uncomfortable. It is possible to prevent this and to make the kitchen hygienic. Further, since the deodorizing catalyst 27 only performs a catalytic action, it does not need to be replaced, and it has a convenient and practical effect.

In the present embodiment, the configuration in which the deodorizing catalyst 27 is provided in the deodorizing duct 26 in the circulation air passage has been described. However, as the deodorizing device, the odor component is physically removed by using activated carbon as the deodorizing material. There is a method of adsorption. With activated carbon,
The deodorizing effect gradually weakens and it is necessary to replace the activated carbon. As described above, even if the activated carbon is used in the deodorizing duct 26, there is a troublesome point that the activated carbon is replaced, but there is a similar effect in deodorizing the odor. Therefore, the contents of installing activated carbon in the deodorizing duct 26 are also included in this embodiment.

FIG. 7 is a side sectional view of the dishwasher / dryer according to the second embodiment of the present invention. In FIG. 7, newly added are a holder 44 and a catalyst 45. That is, the holder 44 is a deodorizing device holder provided in the heater case 19, and a catalyst 45.
Is a deodorizing catalyst fixed to the deodorizing device holder 44 and installed in the center of the ring-shaped drying heater 20.

8 and 9 are a sectional view showing the details of the installation structure of the deodorizing catalyst 45 of FIG. 7, and a perspective view showing the structure of the deodorizing catalyst 45 and the drying heater 20. 8 and 9
Reference numerals 20a and 20b are cross-sections of the drying heater 20.
The deodorizing device holder 44 is provided in close contact with the inside of the heater case 19, and the deodorizing catalyst 45 is fixed in close contact with the deodorizing device holder 44, and is installed at the center of the ring-shaped drying heater 20. 45a is a ventilation small hole which the deodorizing catalyst 45 penetrates. In FIG. 8, 46 is a heater fixing terminal of the drying heater 20 to the heater case 19, and 47 is a wiring of the drying heater 20. The above-mentioned FIGS. 4, 5 and 6 are the same in this embodiment.

Next, the operation of the second embodiment will be described. The dishwasher / dryer of this embodiment performs washing, rinsing and drying of dishes. Further, the odor contained in the hot air in the cleaning tank is deodorized during the drying process.

The washing of the dishes is performed by heating the washing water in which the detergent accumulated in the heater tank 15 is heated by the heater 14 and spraying the washing water of warm water from the jet nozzle 9 to the dishes 6 by the washing pump 8. Similarly to washing, the dishes are rinsed by spraying hot water rinsing water from the jet nozzle 9 onto the dishes 6 by the washing pump 8. The tableware is dried by draining the rinse water and then energizing the drying heater 20 and rotating the blower fan 17 and the cooling fan 35 by driving the fan motor 36. In FIG. 7, when the blower fan 17 is rotated,
Dry air flows from the fan casing 18 to the heater case 1
9 and is heated by the drying heater 20 to become high-temperature hot air. The hot air is blown from the heater case 19 through the air duct 21 into the cleaning tank 2. Figure 7
As shown in, the flow in the cleaning tank 2 is from the bottom to the top in the direction of the arrow. The hot air comes into contact with the tableware 6 to dry the tableware. Due to the drying of the tableware, the hot air that has absorbed moisture from the tableware and is moist is discharged from the exhaust port 24, passes through the exhaust duct 23, and is sent to the dehumidifying heat exchanger 25. Dehumidifying heat exchanger 25
While passing through the heat exchanger 25, the hot air blown to is cooled by the outside air cooling air blown by the cooling fan, and dehumidified water droplets B are generated on the cooling surface of the heat exchanger 25 to be dehumidified.
The dehumidified water droplets B pass through the cooling surface, flow down, are collected in the dehumidified water receiver 29, and are then discharged from the drain hose 30 to the outside of the machine. Next, the deodorizing operation will be described.

In FIG. 7, when the tableware 6 is washed and rinsed by spraying warm water from the spray nozzle 9 in the cleaning tank 2, food residue, that is, the residual food A is the residual food provided on the bottom of the cleaning tank 2. Collect in the filter 13. Further, when hot water is sprayed by the spray nozzle 9 to wash the dishes, the hot water obtained by washing the food residue is repeatedly sprayed on the dishes and the wall surface of the washing tank 2. As described above, when the cleaning and rinsing are completed, the cleaning tank 2 is filled with the odor emitted from the residual food A accumulated in the residual food filter 13 and the odor dissolved in the warm water used to wash the food residue. .

Therefore, in drying, as shown in FIG. 7, the hot air containing the odor is passed through the deodorizing catalyst 45 to deodorize the odor in the cleaning tank 2. In the method, in the drying step, as described above, the hot air blown from the blower port 22 to the cleaning tank 2 flows through the cleaning tank 2 from the lower side to the upper side indicated by the arrow.
Along with the flow of this hot air, the odor emitted from the residue A and the odor emitted from the jetted hot water are discharged from the exhaust port 24 above the cleaning tank 2.
Move to. The hot air containing the odor exits the exhaust port 24, passes through the exhaust duct 23, enters the dehumidifying heat exchanger 25,
It passes through the circulation duct 28 and enters the fan casing 18. The hot air then enters the heater case 19 from the fan casing 18. In FIG. 8, the hot air blown to the heater case 19 is heated by the heat transfer of the drying heater 20 and reaches a high temperature (100 to 120 ° C.). Furthermore, the hot air is
As shown in, the deodorizing catalyst 45 is located in the center of the ring-shaped drying heater 20, so that before and after passing through the ventilation small holes 45a of the deodorizing catalyst 45, the radiant heat of the drying heater 20 further locally High temperature (150-200 ℃)
To be heated. While passing through the ventilation small holes 45a of the deodorizing catalyst 45 shown in FIGS. 8 and 9, this high-temperature hot air has odorous components (for example, methylamine of fish, methylmercaptan of meat, hydrocarbons of oils and fats) contained in the hot air. (Or acetaldehyde) is rapidly combined with oxygen, that is, burned and oxidized to deodorize. The hot air after deodorization is blown again to the cleaning tank 2 through the blower duct 21. Thus, the odorous components contained in the hot air are removed by repeating the deodorizing action of the deodorizing catalyst 45.

According to the second embodiment described above, the temperature of the hot air passing through the deodorizing catalyst 45 is 150 to 200 ° C. depending on the heat transfer and the radiant heat of the drying heater 20 as described above.
Therefore, the deodorizing performance of the deodorizing catalyst 45 can be improved. FIG. 10 is a graph showing the deodorizing data. FIG. 11 shows a catalyst in which the material component of the deodorizing catalyst is manganese dioxide. The odorous component removal rate of the deodorizing catalyst improves as the temperature of the hot air in contact with the catalyst, that is, the reaction temperature, increases. The odor removal rate is 60 ° C. which is the temperature near the exhaust port 24 of the cleaning tank 2.
In this case, the odor removal rate is about 25%, but when the reaction temperature is 150 ° C., the odor removal rate improves to about 50%. Further, when the temperature reaches 200 ° C., the odor removal rate improves to about 70%. When the deodorizing catalyst 45 shown in FIGS. 8 and 9 of this embodiment is heated by heat transfer and radiant heat of a ring-shaped drying heater, the odor removal rate can be improved to 50 to 70%. Therefore, it is possible to sufficiently remove the odors of the fish, meat, oil, etc., of the residual foods that have been filled in the cleaning tank 2, and to prevent the residual foods from attaching to the dishes taken out after cleaning and drying. There is. Further, in this embodiment,
Circulating hot air containing odors, deodorizing the odors in the circulation air passage, and not discharging the odors from the leftovers outside the dishwasher, causing discomfort to people in the kitchen. There is an effect that can prevent. It also has the effect of making the kitchen clean and hygienic.

FIG. 11 is a side sectional view showing the installation structure of the deodorizing catalyst of the dishwasher according to the third embodiment of the present invention. In FIG. 11, reference numeral 48 denotes the heater case 19 and the air duct 2
1, a deodorizing duct provided between the deodorizing duct 1 and the deodorizing duct 4
8 is a deodorizing catalyst provided inside. The entire structure of this dishwasher except for FIG. 11 is the same as that shown in FIG.
5 and 6 are the same in this embodiment.

FIG. 12 is a sectional perspective view showing the construction of the deodorizing catalyst 50 and the drying heater 20 shown in FIG. 12
Reference numeral 49 denotes a deodorizing catalyst holder provided in the deodorizing duct 48 while maintaining airtightness, and 50a denotes a large number of ventilation small holes of the deodorizing catalyst 50.

Next, the operation of the third embodiment will be described. The dishwasher / dryer of this embodiment performs washing, rinsing and drying of dishes. Since these operations are the same as those in the second embodiment shown in FIG. 7, they are omitted. Then, the odor contained in the hot air in the cleaning tank is deodorized during the drying process. The deodorizing operation will be described here.

As shown in FIG. 7, when the tableware 6 is washed and rinsed by spraying warm water from the spray nozzle 9 in the cleaning tank 2, food residue, that is, the residual food A is at the bottom of the cleaning tank 2. Accumulate in the provided residual food filter 13. In addition, the injection nozzle 9
When the tableware is washed by spraying hot water with, the hot water obtained by washing the food residue is repeatedly sprayed on the tableware and the wall surface of the washing tank 2. As described above, when cleaning and rinsing are completed,
The cleaning tank 2 is filled with the odor emitted from the residual food A accumulated in the residual food filter 13 and the odor dissolved in the warm water for cleaning the food residue.

Therefore, in drying, as shown in FIG. 11, hot air containing the odor is passed through the deodorizing catalyst 50 to deodorize the odor in the cleaning tank 2. In the method, hot air is made to flow in the washing tank 2 from the lower side to the upper side indicated by an arrow in the drying step, and along with the flow of the hot air, the odor emitted from the residual food A and the odor emitted from the jetted hot water are discharged from the washing tank 2. It moves to the upper exhaust port 24. The hot air containing the smell exits the exhaust port 24,
It passes through the exhaust duct 23, enters the dehumidifying heat exchanger 25, passes through the circulation duct 28, and enters the fan casing 18.
The hot air then enters the heater case 19 from the fan casing 18. In FIG. 12, the hot air blown to the heater case 19 is heated to a high temperature (100 to 12 by the drying heater 20).
Heated to 0 ° C). This high-temperature hot air passes through the ventilation small holes 50a of the deodorizing catalyst 50 shown in FIG. While the hot air of high temperature passes through the ventilation small holes 50a of the deodorizing catalyst 50, the odorous components (for example, methylamine of fish, methyl mercaptan of meat, hydrocarbons and acetaldehyde of fats and oils) contained in the hot air are oxygenated. Deodorization is performed by rapidly combining, that is, by burning and oxidizing. The hot air after deodorization is blown again to the cleaning tank 2 through the blower duct 21. Thus, the odorous components contained in the hot air are removed by repeating the deodorizing action of the deodorizing catalyst 50.

According to the third embodiment described above, the temperature of the hot air passing through the deodorizing catalyst 50 can be raised to a high temperature of 100 to 120 ° C. immediately after being heated by the drying heater 20. The deodorizing performance of the catalyst 50 can be improved.
The deodorization data is shown in FIG. FIG. 10 shows a catalyst in which the material component of the deodorizing catalyst is manganese dioxide. The odorous component removal rate of the deodorizing catalyst improves as the temperature of the hot air in contact with the catalyst, that is, the reaction temperature, increases. The odor removal rate is about 25% when the temperature near the exhaust port 24 of the cleaning tank 2 is 60 ° C.
However, when the reaction temperature is 100 to 120 ° C. immediately after the drying heater 20 is heated, the odor removal rate is improved to 40 to 45%. Therefore, it is possible to sufficiently remove the odors of the fish, meat, oil, etc., of the residual foods that have been filled in the cleaning tank 2, and to prevent the residual foods from attaching to the dishes taken out after cleaning and drying. There is. In addition, in this embodiment, hot air containing odor is circulated, the odor is deodorized in the circulation air passage, and the odor from the leftover dishes is not discharged to the outside of the dishwasher. There is an effect that can be prevented from giving discomfort. It also has the effect of making the kitchen clean and hygienic.

The present invention is not limited to the one having the circulation air passage and the dehumidifying heat exchanger, and even if the air passage does not circulate, a deodorizing material is provided on the exhaust side so that a considerable deodorization can be achieved. effective.

[0039]

EFFECTS OF THE INVENTION According to the present invention, hot air containing odorous components emitted from fish, meat, oil, etc. of residual vegetables attached to tableware,
In the drying step, the odor component is burned and oxidized by passing through the deodorizing catalyst installed in the circulation air passage to deodorize, so that the odor from the leftover dishes is not discharged to the outside of the dishwasher. Therefore, it is possible to prevent the person in the kitchen from feeling uncomfortable. In addition, by using a deodorizing catalyst for the deodorizing material, it uses a catalytic effect to promote combustion oxidation, as opposed to the one that uses the odor adsorption function like activated carbon, so replace the deodorizing material. You do n’t have to
There is a practical effect that makes it easy to use. Alternatively, even if activated carbon is used as the deodorizing material, it is necessary to replace the activated carbon, but there is a considerable deodorizing effect.

Further, according to the present invention, the deodorizing catalyst is installed in the center of the ring-shaped drying heater, so that the hot air passing through the deodorizing catalyst is heated by the heat transfer and the radiant heat of the drying heater. Since the temperature at which hot air comes into contact with the deodorizing catalyst, that is, the reaction temperature of the catalyst, is increased, the performance of removing the odorous component with the deodorizing catalyst can be improved. Therefore, it is possible to sufficiently remove the odors of the fish, meat, oil, etc., of the residual foods that have been filled in the cleaning tank 2, and to prevent the residual foods from attaching to the dishes taken out after cleaning and drying. There is. Also, hot air containing odors is circulated, the odors are deodorized in the circulation air passage, and the odors from the leftover dishes are not discharged to the outside of the dishwasher. It has the effect of being able to prevent giving. It also has the effect of making the kitchen clean and hygienic.

Further, according to the present invention, the deodorizing catalyst is installed in the duct immediately after the drying heater in the hot air circulating air passage, and the hot air passing through the deodorizing catalyst is heated to a high temperature by the drying heater. Since the temperature at which the hot air comes into contact with the deodorizing catalyst, that is, the reaction temperature of the catalyst, is increased, the performance of removing the odorous component with the deodorizing catalyst can be improved. Therefore, it is possible to sufficiently remove the odors of the fish, meat, oil, etc., of the residual foods that have been filled in the cleaning tank 2, and to prevent the residual foods from attaching to the dishes taken out after cleaning and drying. There is. Also, hot air containing odors is circulated, the odors are deodorized in the circulation air passage, and the odors from the leftover dishes are not discharged to the outside of the dishwasher. It has the effect of being able to prevent giving. Further, according to the present invention,
Even if the air passage is not circulating, placing a deodorizing material on the exhaust side has a considerable deodorizing effect.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an overall configuration of a dishwasher / dryer according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the shape of the deodorizing catalyst shown in FIG.

FIG. 3 is a perspective view showing an installation configuration of the deodorizing catalyst of FIG.

FIG. 4 is a cross-sectional view showing a configuration of a hot air blowing fan and a cooling fan of FIG.

5 is a side sectional view showing a configuration of a cooling fan and a cooling duct of FIG.

6 is a connection diagram of the electric circuit and the control circuit of FIG.

FIG. 7 is a side sectional view showing the overall construction of the dishwasher / dryer according to the second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing an installation configuration of the deodorizing catalyst of FIG.

9 is a perspective view showing a configuration of a deodorizing catalyst and a drying heater of FIG. 7. FIG.

10 is a characteristic diagram showing a reaction temperature and an odor component removal rate in the deodorizing catalyst of FIG. 7.

FIG. 11 is a cross-sectional view showing the installation configuration of the deodorizing catalyst of the third embodiment of the present invention.

FIG. 12 is a cross-sectional perspective view showing a configuration of a deodorizing catalyst and a drying heater of FIG.

[Explanation of symbols]

 1 Outer Frame Main Body 2 Cleaning Tank 3, 4 Tableware Basket 5, 6 Tableware 7 Cleaning Motor 8 Cleaning Pump 9, 11 Injection Nozzle 10 Injection Port 13 Leftover Filter 14 Cleaning Heater 15 Heater Tank 16 Pump Casing 17 Blower Fan 18 Blower Fan Casing 19 Heater Case 20 Drying Heater 21 Blower Duct 22 Blower Port 23 Exhaust Duct 24 Exhaust Port 25 Dehumidifying Heat Exchanger 26 Deodorizing Duct 27 Deodorizing Catalyst 27a Deodorizing Catalyst Ventilation Hole 28 Circulating Duct 29 Dehumidifying Water Receptor 30 Drain Hose 31 Cooling Air passage plate 31a Cooling air exhaust port 32 Cooling duct 33 Opening / closing door 34 Double-sided fan disk 35 Cooling fan blades 36 Fan motor 39 Cooling fan casing 42 Outside air intake duct 43 Outside air intake port 44 Deodorizing device holder 45 Deodorizing catalyst 45a Deodorizing catalyst Ventilation holes 8 ventilation eyelets 60 control circuit (microcomputer) of the deodorizing duct 49 deodorizing catalyst holder 50 deodorizing catalyst 50a deodorizing catalyst 61 power switch 62 drain motor 63 door switch 64 water supply valve 65 Thermostat

Claims (11)

[Claims] 1. A washing tank for arranging dishes, a means for spraying washing water on the dishes, a hot air delivery section for blowing hot air into the washing vessel to dry the washed dishes, and a hot air delivery section through the hot air delivery section. In addition to a circulating air passage for circulating hot air to the cleaning tank and discharging hot air from the cleaning tank, the circulating air passage has a drying heater for generating hot air, a hot air blowing means, and a deodorizing device. Dishwasher equipped with deodorizing equipment with wood. 2. A washing tank for arranging dishes, a means for spraying washing water on the dishes, a hot air blower for blowing hot air into the washing tank to dry the washed dishes, and a hot air blower through the hot air blower. In addition to a circulating air passage for circulating hot air to the cleaning tank and discharging hot air from the cleaning tank, the circulating air passage has a drying heater for generating hot air, a hot air blowing means, and a deodorizing device. Dishwasher equipped with a deodorizing device using a catalyst or activated carbon as a deodorizing material. 3. A washing tank for arranging dishes, a means for spraying washing water on the dishes, a hot air blower for blowing hot air into the washing tank to dry the washed dishes, and a hot air blower through the hot air blower. The circulating air passage for circulating hot air to the cleaning tank and discharging hot air from the cleaning tank, and the circulating air passage includes a drying heater for generating hot air, hot air blowing means, and drying. Dishwasher equipped with a deodorizing device with a deodorizing material, which is installed in the center of the heater. 4. A washing tank for arranging dishes, a means for spraying washing water on the dishes, a hot air blower for blowing hot air into the washing tank to dry the washed dishes, and a hot air blower through the hot air blower. The circulating air passage for circulating hot air to the cleaning tank and discharging hot air from the cleaning tank, and the circulating air passage includes a drying heater for generating hot air, hot air blowing means, and drying. Dishwasher equipped with a deodorizing device with deodorizing material, which is installed immediately after the heater. 5. A washing tank for arranging dishes, a means for spraying washing water on the dishes, a hot air blower for blowing hot air into the washing tank to dry the washed dishes, and a hot air blower through the hot air blower. A circulating air passage that circulates hot air to the cleaning tank and discharge hot air from the cleaning tank, and is attached to a part of the circulating air path to cool and dehumidify the hot air exhausted from the cleaning tank. The dishwasher / dryer, which comprises a dehumidifying heat exchanger, and a circulation air passage, which is provided with a drying heater for generating hot air, a hot air blowing means, and a deodorizing device having a deodorizing material. 6. A washing tank for arranging dishes, a means for spraying washing water on the dishes, a hot air blower for blowing hot air into the washing tank to dry the washed dishes, and a hot air blower through the hot air blower. A circulating air passage that circulates hot air to the cleaning tank and discharge hot air from the cleaning tank, and is attached to a part of the circulating air path to cool and dehumidify the hot air exhausted from the cleaning tank. Dehumidifying heat exchanger, and the circulation air passage is equipped with a drying heater for generating hot air, a hot air blowing means, and a deodorizing device with a deodorizing material provided in the center of the drying heater for dishwashing and drying. Machine. 7. A washing tank in which dishes are placed, a means for spraying washing water on the dishes, a hot air delivery section for blowing hot air into the washing vessel to dry the washed dishes, and a hot air delivery section through the hot air delivery section. A circulating air passage that circulates hot air to the cleaning tank and discharge hot air from the cleaning tank, and is attached to a part of the circulating air path to cool and dehumidify the hot air exhausted from the cleaning tank. And a deodorizing device having a deodorizing material provided immediately after the drying heater for generating hot air, a hot air blowing means, and a drying heater in the circulation air passage. . 8. A washing tank in which dishes are placed, a means for spraying washing water on the dishes, a drying heater and a heater duct for heating air for drying washed dishes, and hot air heated by the heater is used in the washing tank. Connects a blower fan and fan casing that blows air, a blower duct that guides hot air from the heater duct to the cleaning tank, a dehumidifying heat exchanger that cools and dehumidifies the exhaust hot air from the cleaning tank, and a connection from the cleaning tank to the dehumidifying heat exchanger. An exhaust duct, a circulation duct that connects the dehumidifying heat exchanger to the fan casing, a cooling fan that blows outside air cooling air to the dehumidifying heat exchanger, and an air passage that circulates hot air when drying dishes, that is, the fan casing. , A heater duct, a ventilation duct, a washing tank, an exhaust duct, a dehumidifying heat exchanger, and a circulation duct for deodorizing catalyst installed in a part of the circulation path of the dry hot air. Alternatively, the dishwasher is provided with a deodorizing material made of activated carbon and a deodorizing duct surrounding the deodorizing material and forming a part of a circulation air passage. 9. A washing tank in which dishes are placed, a means for spraying washing water on the dishes, a drying heater and a heater duct for heating air for drying washed dishes, and hot air heated by the heater is used in the washing tank. Connects a blower fan and fan casing that blows air, a blower duct that guides hot air from the heater duct to the cleaning tank, a dehumidifying heat exchanger that cools and dehumidifies the exhaust hot air from the cleaning tank, and a connection from the cleaning tank to the dehumidifying heat exchanger. An exhaust duct, a circulation duct that connects the dehumidifying heat exchanger to the fan casing, and a cooling fan that blows outside air cooling air to the dehumidifying heat exchanger, and the fan casing, the heater duct, the blowing duct, and the cleaning tank, A dishwasher / dryer in which a circulation air passage for drying dishes is constituted by an exhaust duct, a dehumidifying heat exchanger, and a circulation duct, and is installed in the central portion of the drying heater. A dishwasher comprising a deodorizing catalyst and a deodorizing catalyst holder for fixing the deodorizing catalyst in the heater duct. 10. A washing tank in which dishes are placed, a means for spraying washing water on the dishes, a drying heater and a heater duct for heating air for drying washed dishes, and hot air heated by the heater is used in the washing tank. Connects a blower fan and fan casing that blows air, a blower duct that guides hot air from the heater duct to the cleaning tank, a dehumidifying heat exchanger that cools and dehumidifies the exhaust hot air from the cleaning tank, and a connection from the cleaning tank to the dehumidifying heat exchanger. An exhaust duct, a circulation duct that connects the dehumidifying heat exchanger to the fan casing, and a cooling fan that blows outside air cooling air to the dehumidifying heat exchanger, and the fan casing, the heater duct, the blowing duct, and the cleaning tank, A dishwasher / dryer in which a circulation air passage for drying dishes is constituted by an exhaust duct, a dehumidifying heat exchanger, and a circulation duct. A deodorizing catalyst installed later, and a deodorizing duct that surrounds and fixes the deodorizing catalyst between the heater duct and the air blowing duct and that constitutes a part of the circulation air passage are provided. Dishwasher. 11. A washing tank in which dishes are placed, a means for spraying dishwashing water, and hot air heated by a drying heater for heating air from the outside to dry washed dishes is blown to the washing tank. A dishwasher / dryer having an air passage for exhausting the exhaust air from the washing tank to the outside air, characterized in that a deodorizing device having a deodorizing material is provided on the exhaust side of the air passage.