JP2007312869A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dry dishes without discharging air containing high-temperature and high-humidity steam from the front surface of a main body to the outside. <P>SOLUTION: The dishwasher, which comprises a drawer type washing tub 3 movable when taking dishes 35 in and out, a rotary nozzle body 7 for jetting washing water into the washing tub 3, a hot air fan 11 for sending drying air into the washing tub 3 and a hot air heating heater 22 for heating the washing water and/or the drying air, is provided with an air-cooled heat exchange unit 13 for dehumidifying highly humid hot air sent from the inside of the washing tub 3 by cooling air during a drying process. The air-cooled heat exchange unit 13 is fixed to the washing tub 3 separately from the washing tub 3 keeping a prescribed space, and the washing tub 3 and the air-cooled heat exchange unit 13 are integrally movable. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher that dehumidifies and dries after dishware placed in a drawer-type washing tank is washed.

  There are roughly two types of dishwashers that clean the tableware placed in the drawer-type washing tank and then dehumidify it from the warm exhaust air by cooling in the drying process.

  For example, Patent Document 1 discloses an air-cooling type. In this apparatus, a duct is attached to the outside of the vertical wall surface of the back surface of the cleaning tank, and external air is blown to the duct by a blower fan to cool the vertical wall surface.

  Further, there is also one disclosed in Patent Document 2. This device is provided with a circulation passage that guides the air in the washing tank to the outside of the washing tank by a fan and then introduces it again into the washing tank, and a heat exchanger section that removes moisture in the air passing through the circulation passage in the passage. It is provided.

On the other hand, the water-cooled type uses a cooling water such as tap water to perform dehumidification cooling during the drying process. In this method, the heat exchange performance of cooling and dehumidification is better than that of the air cooling method, but several liters of cooling water such as tap water is required, and water saving becomes somewhat difficult. Moreover, the dishwasher may be connected to a hot water supply facility that can supply hot water immediately, and water supply (eg, 40 ° C. to 60 ° C.) having a higher temperature level than normal tap water (eg, about 20 ° C.) is performed. The exhaust temperature (e.g.
60 ° C.) and the cooling water supply cannot take a sufficient temperature difference, and the required heat exchange performance cannot be ensured.

Japanese Patent Laid-Open No. 5-161591 JP-A-6-154148

  In the above-described conventional configuration, the air cooling type disclosed in Patent Document 1 has water vapor in the washing tank condensed by cooling of the external air through the standing wall, but the air in the washing tank containing water vapor is retained. It is easy and cannot be efficiently dehumidified to flow through the circulation passage.

  On the other hand, in the thing shown in patent document 2, since the circulation path of the air containing water vapor | steam is comprised, dehumidification more efficient than patent document 1 can be anticipated, but the air side containing the moisture of the heat exchange part adjoins the tank wall. Therefore, the surface cannot be used effectively as a cooling surface.

  Moreover, the flow direction of the air containing moisture and the cooling air in the heat exchanging section is a parallel flow, and the temperature difference between the two fluids cannot be used effectively for heat exchange. Moreover, the flow direction of the air containing moisture in the heat exchange section is from the bottom to the top, and the flow of water dehumidified and condensed is reversed to the downward flow of water to inhibit the smooth fall of the condensed water.

  Further, in the configuration on the air side including moisture, a drying heater is provided between the circulation fan and the heat exchange unit, and the air dehumidified in the heat exchange unit is heated to air having a relative humidity close to 100%. There is no means.

  In any of the above-described conventional examples, the washing tank is fixed to the tableware washing machine main body, and there is no mention of a configuration in which the washing tank is pulled out freely. In addition, there is no mention of a treatment method such as a case where an odor occurs or a cleaning property.

  On the other hand, as described above, since the water-cooled type is dehumidified and cooled using cooling water such as tap water during the drying process, the heat exchange performance of dehumidification is better than that of the air-cooled type. However, several liters are required, which is not preferable in terms of water saving, that is, energy saving.

  The present invention is to improve an air-cooled dishwasher that is excellent in energy saving compared to a water-cooled type that requires several liters of cooling water such as tap water and is difficult to save water.

  In Claim 1, the drawer-type washing | cleaning tank which can move to the front-back direction at the time of putting in / out of tableware, the rotary nozzle body which injects washing water in the said washing tank, the air blower which ventilates air in the said washing tank, and the said washing | cleaning A dishwasher having a heater for heating water and / or air, comprising: an air-cooling heat exchange unit that dehumidifies the high-humidity hot air blown from the inside of the washing tank during the drying process with cooling air; A heat exchange unit is fixed to the washing tank, and the washing tank and the air-cooled heat exchange unit are moved together.

  According to a second aspect of the present invention, an air-cooling heat exchange unit that dehumidifies the high-humidity hot air blown from the cleaning tank with cooling air is provided, and the air-cooling heat exchange unit is fixed to the cleaning tank while maintaining a predetermined space. The washing tank and the air-cooled heat exchange unit are moved together.

  According to a third aspect of the present invention, the air-cooled heat exchange unit is installed on the back side of the washing tank, and high-humidity hot air is circulated from the upper side to the lower side in the air-cooled heat exchange unit, and the cooling air is passed from the lower side to the upper side. The heat exchange is performed by causing the two flows to face each other.

  According to a fourth aspect of the present invention, the flow path in the air-cooled heat exchange unit is divided into a flow path through which high-humidity hot air flows and a flow path through which cooling air flows through a heat exchange plate, Heat is exchanged between the cooling air and the humid air is dehumidified.

  In claim 5, the heat exchange plate is made of a thin metal plate, and is configured to be continuously bent into a wave shape a plurality of times on a surface perpendicular to the direction in which the high-humidity hot air and the cooling air flow. Is larger than the wavy interval.

  According to a sixth aspect of the present invention, a material having a deodorizing function is applied to at least the surface of the heat exchange plate on the side where high-humidity hot air flows.

  In claim 7, the high-humidity hot air and the cooling air are blown at right angles to the heat exchange plate at the high-humidity hot air and the cooling air inlet of the air-cooled heat exchange unit, and then the heat exchange plate It flows in parallel along.

  In claim 8, the hot air intake port of the high-humidity hot air from the cleaning tank and the hot air inlet port of the air-cooling heat exchange unit are connected by a pipe line, and the hot air flow of the air-cooling heat exchange unit of the high-humidity hot air The outlet and the hot air exhaust port of the washing tank are connected by a pipe line, and the cooling air inlet and outlet of the air-cooling heat exchange unit are connected to the outside air through the pipe line, respectively. An inflow space is provided at each inflow port of the air-cooled heat exchange unit, and an inflow opening cross-sectional area of the inflow space to the heat exchange plate is larger than a cross-sectional area of the connected pipe line.

  According to a ninth aspect of the present invention, in the air-cooled heat exchange unit, at least one of the one wall surface and the heat exchange plate constituting the flow path through which the cooling air flows is detachable to facilitate cleaning.

  In Claim 10, the washing tank which stores tableware, the rotating nozzle body which injects washing water in the washing tank, the blower which blows air in the washing tank, and the washing water and / or air are heated. In a dishwasher having a heater, an air-cooling heat exchange unit that cools and dehumidifies high-humidity hot air blown from the inside of the washing tub with cooling air during a drying process, and the air-cooling heat exchange unit is a predetermined unit. The space is kept away from the washing tank.

  According to the first aspect of the present invention, the air-cooled heat exchange unit that moves integrally with the drawer-type cleaning tank realizes the cooling and dehumidification of the high-humidity hot air, so the hot air containing steam is exhausted to the surroundings. The indoor environment will not be humid.

  Moreover, since highly efficient cooling dehumidification is implement | achieved, the operation time of drying can be shortened and the dishwasher which improved drying performance can be provided.

  Furthermore, since the washing tank and the air-cooling heat exchange unit are always moved together, a telescopic pipe is not necessary.

  According to claim 2, when the air-cooled heat exchange unit and the washing tank are fixed while maintaining a predetermined space, in addition to the cooling of the high-humidity hot air by the cooling air in the air-cooled heat exchange unit, Cooling of high-humidity hot air with the air flowing around the air-cooled heat exchange unit can also be expected, and the heat exchange performance can be further improved.

  According to the third aspect, when the air-cooled heat exchange unit is installed on the back side of the washing tank, the empty space of the dishwasher can be used effectively without obstructing the drawer.

  In addition, by making the flow of the high-humidity hot air and the cooling air counterflow, the temperature efficiency and the like are improved, leading to an increase in heat exchange performance.

  According to the fourth aspect, since the heat exchange plate that partitions the flow path in the air-cooled heat exchange unit is a metal plate having good thermal conductivity, the thermal resistance during heat conduction can be reduced.

  According to claim 5, by bending the metal plate in a wave shape, it is possible to increase the heat radiation surface area that contributes to heat transfer in a limited space, to reduce the heat resistance of the convection, and to increase the heat exchange performance. Connected.

  According to the sixth aspect, when odor is generated in the circulating hot air, it is deodorized by the heat exchange plate having a deodorizing function, so that the odor of the warm air is removed, and further in the deodorization in the washing tank or the like. Is also connected.

  According to claim 7, heat transfer is good by blowing high-humidity hot air and cooling air at right angles to the heat exchange plate at the inlet of high-humidity hot air and cooling air of the air-cooled heat exchange unit. Impinging jet heat transfer can be obtained, leading to an increase in heat exchange performance.

  According to the eighth aspect of the present invention, since the high-humidity hot air and cooling air flowing into the inflow port from the narrow pipe line are adjusted so that the pressure and flow velocity are uniformly introduced into the heat exchange plate in the inflow space, Reduction can be suppressed.

  According to the ninth aspect, even when the heat exchange plate and the flow path are dirty, the cleaning property is easy, and the attached dirt and dust can be easily removed.

  According to the tenth aspect, the dehumidification of high-humidity hot air is performed by the air-cooling heat exchange unit that is fixed to the cleaning tank away from the drawer-type cleaning tank while maintaining a predetermined space, and moves integrally with the drawer-type cleaning tank. Therefore, the warm air containing steam is not exhausted to the surroundings, and the indoor environment is not humidified.

  Moreover, since highly efficient cooling dehumidification is implement | achieved, the operation time of drying can be shortened and the dishwasher which improved the drying performance can be provided.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a dishwasher that is incorporated in a kitchen unit 1 such as a system kitchen. A drawer-type washing tank 3 is arranged in two upper and lower stages on a main body 2 of the dishwasher. Note that the dishwasher of the present invention may have a configuration of not less than the upper and lower two stages as shown in the figure, but may be one stage or three or more stages in the vertical direction, and may be configured in a plurality of rows in the left and right direction.

  FIG. 2 is a perspective view of the drawer-type cleaning tank 3.

  The cleaning tank 3 is supported by a guide rail 5a provided in the lower part of the side surface along the front-rear direction and a roller 5b provided on the storage unit side of the kitchen unit 1 so as to face the guide rail 5a. The guide rail 5a and the roller 5b are lightly inserted and removed in the front-rear direction.

  The cleaning tank 3 is provided with a door portion 4 having a decorative panel front panel 4a on the front surface. The door portion 4 is provided with various operation buttons and the like. have.

  FIG. 3 is a side sectional view of the main body 2 of the dishwasher shown in FIGS. 1 and 2, and the cleaning tank 3 includes a rotating nozzle body 7, a cleaning pump 8, and the like on the inner bottom side. The cleaning pump 8 sucks up the cleaning water accumulated in the storage unit 9 provided on the inner bottom side of the cleaning tank 3 and supplies it to the rotating nozzle body 7. The rotating nozzle body 7 jets the supplied cleaning water with a high water pressure vigorously into the cleaning tank 3 from the nozzle hole 7a provided on the upper surface thereof. The tableware 35 stored in the storage basket 10 in the cleaning tank 3 is cleaned with the sprayed cleaning water. In addition, a heater 12 for heating the cleaning water in a heating washing process, a heating rinsing process, and the like is provided on the inner bottom surface of the cleaning tank 3.

  And in FIG. 3, 13 is the air-cooling type heat exchange unit of this invention. The air-cooled heat exchange unit 13 is characterized by being placed away from the cleaning tank 3 while maintaining a predetermined space 14, and is firmly fixed to the cleaning tank 3 so as to be movable together with the cleaning tank 3. It has been done. This will be described with reference to FIGS. 4 and 5. FIG.

  FIG. 4 is a perspective view of FIG. 2 as viewed from the back side. The air-cooling heat exchange unit 13 is provided on the back side of the cleaning tank 3, and is fixed to the cleaning tank 3 together with some peripheral components. Moves together with the tank 3.

  Here, the cooling air path will be described. Reference numeral 15 denotes a cooling air inlet provided in the lower front portion of the cleaning tank 3, which is connected to a suction port of a cooling fan 16 that is also a blower provided in the lower part of the cleaning tank 3. The ambient air is sucked in from the open space and is sent to the cooling air intake pipe 17 connected to the outlet of the cooling fan 16 as cooling air, and the cooling air flow provided in the lower part of the air-cooling heat exchange unit 13 It reaches the entrance 18.

  Although the structure of the air-cooling heat exchange unit 13 will be described later, a cooling air outlet 19 is provided in the upper part thereof, and the cooling air warmed by cooling from the cooling air outlet 19 passes through the cooling air exhaust pipe 20. Then, it discharges | emits from the cooling air exhaust port 21 provided in the front lower part of the washing tank 3 to the circumference | surroundings.

  The cooling fan 16 may be an axial fan such as a propeller fan, but a sirocco fan or a turbo fan may be used when the pressure loss in the entire path increases. Further, the installation location of the cooling fan 16 is not limited to the lower surface of the cleaning tank 3 as shown in the figure, and may be the rear part of the cleaning tank 3, the inside of the door part 4, or the like.

Here, if the warm cooling air exhausted from the cooling air exhaust port 21 enters the cooling air intake port 15 as it is, the cooling performance is deteriorated. For example, in FIG. 2, the warm cooling air exhausted from the cooling air exhaust port 21 May flow in the right direction, and cool cooling air sucked into the cooling air inlet 15 may flow in from the left direction. In order to change the direction of the cooling air intake or exhaust flow, a flow control guide rib or the like may be provided in the cooling air intake port 15 or the cooling air exhaust port 21.

  The positions and combinations of the cooling air inlet 15 and the cooling air exhaust 21 need not be limited to the above contents. For example, the cooling air intake port 15 may be provided in the lower front portion of the cleaning tank 3 as described above, and the cooling air exhaust port 21 may be provided on either the side surface or the upper front surface of the cleaning tank 3. Further, the cooling air exhaust port 21 may be provided separately at several locations around the cleaning tank 3, and the heated cooling air may be exhausted at a low speed from several exhaust ports having a wide cross-sectional area as a whole. .

  Further, in FIG. 4, the entire cooling air outlet 19 of the air-cooling heat exchange unit 13 is removed, or the connecting portion 19 a with the cooling air exhaust pipe 20 is removed and the air-cooling heat exchange unit 13 flows out of the air-cooling heat exchange unit 13. The warmed cooling air may be exhausted on the back side of the cleaning tank 3 as it is. In this case, the exhausted cooling air flows around the washing tub 3 and slowly flows out to the outside air from the side surface, the lower surface, the upper surface, or the rear surface of the dishwasher body 2.

  FIG. 5 is a translucent perspective view showing the internal structure of the cleaning tank 3. The path of the circulating hot air, which is dry air for drying the dishes, will be described with reference to FIG. 4 and FIG. 4 described above.

  The hot air deprived of the moisture evaporated from the tableware 35 to be highly humid is sucked in from the hot air inlet 23 provided at the upper back of the cleaning tank 3 and is also provided above the air-cooled heat exchange unit 13. The hot air inlet 24 is reached. Then, the cooled and dehumidified warm air from the warm air outlet 25 provided at the lower part of the air-cooling heat exchange unit 13 reaches the warm air heater 22 through the warm air fan 11 and is heated again to a high temperature to be washed. 3 is blown out into the washing tub 3 from a hot air exhaust port 26 provided at the lower back of the table 3 to dry the dishes. Hot air circulates in this way.

  Here, when the warm air discharged from the warm air heater 22 is directly put into the cleaning tank 3, the hot air blowing position 26 a in the cleaning tank 3 becomes the upper part in the cleaning tank 3. Therefore, the heated hot air is sucked from the hot air intake port 23 as it is. Further, in order to efficiently apply the heated warm air to many dishes 35, it is preferable to lower the warm air blowing position so that the rising flow of warm air hits the dishes 35. Therefore, in FIG. 6, a duct 26 b that guides the hot air from the hot air blowing position 26 a to the lower part is provided, and finally, the warm air exhaust port 26 provided at the lower back of the cleaning tank 3 is heated into the cleaning tank 3. I try to blow out the wind. As a result, the cleaning water in the cleaning tank 3 can be heated.

  Here, the hot air fan 11 may be an axial fan such as a propeller fan, but a sirocco fan or a turbo fan may be used when the pressure loss in the entire path increases. Moreover, as the warm air heater 22, a sheathed heater or a PTC heater may be used. Furthermore, heat dissipation fins may be added to the sheathed heater to improve the heating performance of the heater.

  Further, the warm air for drying the tableware 35 after being dehumidified and cooled and then blown out again to the washing tub 3 may be heated using the heater 12 for heating the washing water in the washing tub 3. Is possible. In this case, a part of the heater 12 may be exposed to the warm air passage.

  Next, FIG. 6 shows a system diagram of the cooling air path, the hot air path, and the air-cooling heat exchange unit 13 described above.

  The air-cooled heat exchange unit 13 is disposed away from the cleaning tank 3 while maintaining a predetermined space 14, so that ambient air can easily enter the space 14 and can easily circulate vertically and horizontally. ing.

  As described above, when the air-cooling heat exchange unit 13 and the washing tank 3 are fixed while maintaining the predetermined space 14, air cooling is performed in addition to the cooling of the high-humidity air 33 by the cooling air 34 in the air-cooling heat exchange unit 13. Cooling of high-humidity hot air can be expected also by the cold air flowing around the heat exchanger unit 13, particularly the predetermined space 14, and the heat exchange performance can be further improved.

  Inside the air-cooled heat exchange unit 13, a heat exchange plate 27 is arranged substantially in the middle so as to be divided into a flow path 28 through which high-humidity hot air flows and a flow path 29 through which cooling air flows. Heat exchange is performed between the high-humidity air 33 and the cooling air 34 via the air to cool and dehumidify the high-humidity air 33. The moisture dehumidified and condensed in the air-cooled heat exchange unit 13 is sent into the washing tank 3 by a thin drain pipe 32 connecting the lower part of the air-cooled heat exchange unit 13 and the lower part of the washing tank 3, and finally It is drained.

  Further, in the air-cooled heat exchange unit 13, as shown in the figure, the high-humidity air 33 is circulated from the upper side to the lower side of the heat exchange plate 27, and the cooling air 34 is circulated from the lower side to the upper side. Heat is exchanged efficiently by making the flow countercurrent.

  Further, since the high-humidity air 33 is cooled by the heat exchange plate 27 and the moisture in the high-humidity air is condensed and liquefied, the condensed water is circulated from above to below. It can be smoothly transported to the drain pipe 32.

  Here, an example of the shape of the heat exchange plate 27 will be described with reference to FIG. FIG. 7A is a cross-sectional view taken along a plane perpendicular to the flow direction, and FIG. 7B is a plan view. Moreover, (c) is the elements on larger scale of the (circle) part of Fig. (A).

  The heat exchange plate 27 of the present invention is a thin metal plate and has a so-called tin plate-like (meandering) configuration that is continuously bent a plurality of times in a wavy manner on a plane perpendicular to the flow direction. Here, as a material of the metal plate, an aluminum material or a copper material having a good thermal conductivity may be used, or a stainless material which is not easily rusted, for example, a SUS304 material may be used. In addition, the metal plate may be subjected to a surface treatment that improves corrosion resistance. The plate thickness t is preferably thin, for example, about 0.2 mm to 0.6 mm, for example, about 0.4 mm is the best, but may be 0.6 mm or more when strength is required.

  Another feature of the heat exchange plate 27 of the present invention is that the wave height h folded in a wave shape as shown in FIG. 7C is considerably larger than the wave interval p folded in a wave shape. For example, when the wave interval p is about 6 mm to 10 mm, for example 8 mm, the wave height h is about 15 mm to 25 mm, for example 20 mm. By bending deeply in this way, as can be seen from FIG. 7A, the surface area of the heat exchange plate 27 on each of the warm air side 28 and the cooling air side 29 can be increased in a limited space. This leads to improved exchange performance. For example, the surface area of the heat exchange plate 27 can be about 3 to 5 times, for example, 4 times the projected area (A × B). In the above embodiment, the heat exchange plate 27 is made of metal. However, in some cases, resin or the like may be used, and it is not necessary to limit the specification to the numerical values described above.

  Thus, by making the heat exchange plate 27 a metal plate with good thermal conductivity, heat resistance due to conduction is reduced, and by bending the metal plate in a wave shape, it contributes to heat transfer in a limited space. The heat dissipation surface area can be increased, the thermal resistance due to convection can be reduced, and the heat exchange performance is increased.

  Further, when it is necessary to deodorize the circulating hot air, a material having a deodorizing function may be applied to the surface of the heat exchange plate 27 as one method for ensuring the deodorizing function. As a material having a deodorizing function, a photocatalyst such as titanium oxide, a silver-based or zinc-based deodorizing material, and the like are conceivable. The surface on which the material having the deodorizing function is applied may be only the surface on which the hot air flows, but may be applied together on each surface on which the hot air and cooling air flow. Thus, when odor is generated in the circulating air, it is deodorized by the heat exchange plate 27 having a deodorizing function, so that the odor of the circulating air is removed, and further, the entire inside of the washing tank 3 and the like is also deodorized. Further, in the present invention, the high-humidity air 33 can be condensed on the surface of the heat exchange plate 27 and the water can be liquefied, so that the odor component in the high-humidity air 33 can be adsorbed and aggregated to the liquefied water during the condensation. The odorous component can be smoothly carried to the drain pipe 32 together with water and discharged at the same time.

  Next, another embodiment of the present invention will be described with reference to FIGS.

First, in FIG. 6, the high humidity air 33 a and the cooling air 34 a are respectively transferred to the heat exchange plate 27 at the hot air inlet 24 and the cooling air inlet 18 of the high humidity air 33 and the cooling air 34 of the air-cooling heat exchange unit 13. Then, as shown by the arrows, the air was blown at right angles, and thereafter, the high-humidity air 33 and the cooling air 34 flowed in parallel along the heat exchange plate 27. As described above, the high humidity air 33a and the cooling air 34a are blown to the heat exchange plate 27 at substantially right angles at the inlets 24 and 18 of the high humidity hot air 33 and the cooling air 34, respectively, thereby heat transfer coefficient. Good impact jet heat transfer can be obtained, leading to an increase in heat exchange performance.

  Note that, as described above, it is preferable to spray both the high-humidity air 33a and the cooling air 34a at right angles to the heat exchange plate 27, but either the high-humidity air 33a or the cooling air 34a may be used. Good.

Next, in FIG. 4 and FIG. 6, the hot air inlet 23 of the high-humidity air 33 and the hot air inlet 24 of the air-cooling heat exchange unit 13 are connected by a pipe 30 and the air-cooling heat exchange of the high-humidity air 33 is performed. The hot air outlet 25 and the hot air outlet 26 of the unit 13 are connected by a pipe 31, and the cooling air inlet 18 and the outlet 19 are connected to the outside air by pipes 17 and 20, respectively. Pipe lines 30 and 31 and pipe lines 17 provided with inflow spaces (enlarged chambers) at the respective inlets 24 and 18 of the cooling air 34 and connected to the cross-sectional area of the inflow opening to the heat exchange plate 27 of the inflow spaces. , 20 so as to be larger than the cross-sectional area. This is because if the humid air 33a and the cooling air 34a that have entered the inlets 24 and 18 from the pipes 30 and 31 and the pipes 17 and 20 with a small cross-sectional area are immediately introduced into the heat exchange plate 27, the flow path Since the flow velocity distribution can be caused by an increase in pressure loss and drift, the heat exchange performance is lowered. However, if configured as described above, the high-humidity air 33a and the cooling air 34a that have flowed into the heat exchange plate 27 in the inflow space. On the other hand, since the pressure and flow rate are adjusted so that they can flow uniformly, it is possible to suppress a decrease in heat exchange performance. Also in this case, as described above, it is preferable that the high-humidity air 33a and the cooling air 34a are blown to the heat exchange plate 27 at a substantially right angle.

  FIG. 8 shows still another embodiment. The outer wall surface 13a, which is one of the wall surfaces constituting the flow path 29 through which the cooling air 34 of the air-cooling heat exchange unit 13 flows, is made detachable. Furthermore, the heat exchange plate 27 may be detachable, and it is not necessary to be able to detach it only on the outer wall surface 13a.

  By doing so, when the surface of the heat exchange plate 27 or the wall surface of the cooling air side flow path 29 becomes dirty, for example, the outer wall surface 13a can be removed as shown in the figure and cleaning can be easily performed. Even if dirt or dust adheres, it can be easily removed.

  As described above, in the present invention, when the hot air fan 11 is operated during the drying operation, the high-humidity air 33 including the humidity in the cleaning tank 3 is transferred from the hot air inlet 23 in the cleaning tank 3 to the air-cooled heat exchange unit. 13, heat exchange is performed with the cooling air 34 on the surface of the heat exchange plate 27, the water vapor is condensed and liquefied to remove moisture in the washing tank 3, and the hot air is routed to the hot air heating heater 22. Then, the temperature is raised and the air is blown again into the washing tank 3 from the hot air exhaust port 26, so that a circulation path of the hot air completely separated from the outside air can be formed, and the high temperature from the front of the main body 2 to the outside can be formed.・ Dishware can be dried without exhausting high-humidity water vapor.

It is a perspective view of the dishwasher of the form integrated in the kitchen unit of this invention. It is a perspective view of the washing tank. It is side surface sectional drawing of the same dishwasher. It is the perspective view seen from the back side of the washing tank. It is a perspective view of the washing tank. It is a systematic diagram of the same air cooling type heat exchange unit. (A) is sectional drawing of the heat exchanger plate, (b) is a top view, (c) is the elements on larger scale. It is a back perspective view of the dishwasher which can attach or detach the wall surface of the air cooling type heat exchange unit.

Explanation of symbols

3 ... Cleaning tank, 11 ... Warm air fan, 13 ... Air-cooled heat exchange unit, 16 ... Cooling fan,
DESCRIPTION OF SYMBOLS 18 ... Cooling air inflow port, 21 ... Cooling air exhaust port, 22 ... Hot air heater, 24 ... High humidity hot air inflow port, 27 ... Heat exchange plate, 33 ... High humidity air, 34 ... Cooling air

Claims (10)

  A drawer-type washing tank movable in the front-rear direction when taking in and out of the tableware, a rotating nozzle body for injecting washing water into the washing tank, a blower for blowing air into the washing tank, and the washing water and / or air A dishwasher having a heater for heating the air-cooling system, comprising: an air-cooling heat exchange unit that dehumidifies the high-humidity hot air blown from the inside of the washing tank during the drying process with cooling air; A dishwasher fixed to a washing tank, wherein the washing tank and the air-cooled heat exchange unit move together.   An air-cooling heat exchange unit that dehumidifies the high-humidity hot air blown from the cleaning tank with cooling air, and the air-cooling heat exchange unit is fixed to the cleaning tank while maintaining a predetermined space; and The dishwasher according to claim 1, wherein the air-cooled heat exchange unit moves as a unit.   The air-cooled heat exchange unit is installed on the back side of the washing tank, and in the air-cooled heat exchange unit, high-humidity hot air is circulated from above to below, and cooling air is circulated from below to above. 3. The dishwasher according to claim 1, wherein heat exchange is performed by making the two flows opposite to each other.   The flow path in the air-cooled heat exchange unit is divided into a flow path for high-humidity hot air and a flow path for cooling air using a heat exchange plate, and heat exchange is performed between the high-humidity hot air and cooling air via the heat exchange plate. The dishwasher according to any one of claims 1 to 3, wherein the humid air is dehumidified.   The heat exchange plate is made of a thin metal plate, and is configured to be continuously folded in a wave shape multiple times on a plane perpendicular to the direction in which the high-humidity hot air and the cooling air flow. The dishwasher according to any one of claims 1 to 4, wherein the dishwasher is larger.   The dishwasher according to any one of claims 1 to 5, wherein a material having a deodorizing function is applied to at least a surface of the heat exchange plate on a side where high-humidity hot air flows.   At the high-humidity hot air and cooling air inlet of the air-cooled heat exchange unit, the high-humidity hot air and the cooling air are blown at right angles to the heat exchange plate, and then parallel to the heat exchange plate. The dishwasher according to any one of claims 1 to 6, wherein the dishwasher flows.   The hot air intake port of the high-humidity hot air from the washing tank and the hot air inlet port of the air-cooling heat exchange unit are connected by a pipe line, and the hot-air outlet of the high-humidity hot air cooling unit and the washing tank The hot air exhaust port is connected by a pipe line, and the cooling air inlet and outlet of the air-cooled heat exchange unit are connected to the outside air through the pipe line, respectively, and the air-cooled heat exchange of the high-humidity hot air and the cooling air is performed. The inflow space is provided in each inflow port of the unit, and the cross-sectional area of the inflow opening to the heat exchange plate of the inflow space is larger than the cross-sectional area of the connected pipe line. A dishwasher according to any of the above.   2. The air-cooled heat exchange unit according to claim 1, wherein at least one of a wall surface and a heat exchange plate constituting a flow path through which cooling air flows is detachable and easy to clean. The dishwasher in any one of 8. A washing tub for storing tableware, a rotating nozzle body for injecting washing water into the washing tub, a blower for blowing air into the washing tub, and a hot air heating heater for heating the washing water and / or dry air. -A tableware washing machine having an air cooler, comprising: an air-cooling heat exchange unit that dehumidifies the high-humidity hot air blown from the inside of the washing tub with cooling air during the drying step, wherein the air-cooling heat exchange unit has a predetermined space. A dishwasher characterized in that it is provided separately from the washing tank.

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