JP2734544B2 - Tableware dryer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dish dryer for drying dishes and the like after washing.

2. Description of the Related Art In a conventional dish dryer of this type, when a drying time is set by a drying switch, hot air of about 80 ° C. heated by a heat source such as a heater during a predetermined period is sent into a drying chamber by a fan, and The tableware is dried by evaporating water attached to the tableware stored in the drying chamber with warm air. Then, after the drying time set by the drying switch has passed, the drying operation ends, and the power of the fan and the heat source is turned off.

In such a conventional configuration, the temperature of the tableware immediately after drying is as high as about 60 ° C., but after a certain time,
The temperature of the tableware stored in the drying chamber drops to room temperature. Therefore, in recent years, as the eating habits have become more gourmet, users often use hot dishes or dishes cooled to a low temperature in accordance with the temperature of the dishes in order to utilize the taste of the dishes. However, conventionally, if it is desired to immediately heat the tableware, the tableware is immersed in boiling water or dried again with a tableware dryer. In addition, when they wanted to cool the dishes immediately, they had to put the dishes in ice water or temporarily store them in a refrigerator freezer.

However, if the dishes were soaked in boiling water or ice water, they would get wet and they would have to be wiped again, and it would take some time to reheat the dishes once cooled down to room temperature using a dryer. More cumbersome work such as being involved increases the efficiency of cooking work. In addition, it is very unsanitary if the dishes are placed in a freezer or the like of a refrigerator in use for cooling the dishes.

The present invention solves such a problem, and after drying the tableware, always keeps the temperature of the tableware stored in the drying room at a certain temperature, thereby matching the temperature of the dish. The tableware of the temperature can be used immediately in a dry and clean state, and the cooking operation is simplified.

Means for Solving the Problems A tableware dryer of the present invention has at least one drying chamber, a heating device for heating the drying chamber, a drying switch for driving the heating device, and detecting a temperature in the drying chamber. At least one heat-sensitive element, comprising a cooling device, switching means capable of selecting the driving of the heating device and the cooling device, a stop switch to stop the driving of the heating device and the cooling device,
Temperature control means for controlling the driving of the heating device and the cooling device based on a signal from the thermosensitive element.

The tableware dryer of the present invention, when the drying operation is completed,
The temperature controller compares a signal of the thermosensitive element in the drying chamber with a signal from the changeover switch. When the changeover switch is set to a low temperature level, the temperature control device drives the cooling device to cool the inside of the drying chamber, and when the changeover switch is set to a high temperature level, The heating device is driven to heat the inside of the drying chamber. In either case, when the temperature level of the thermal element reaches or approaches the set temperature level set by the changeover switch, the temperature control device switches to duty control. As a result, the temperature of the tableware in the drying room is kept constant at the low or high temperature set by the changeover switch, so that when necessary, tableware having a temperature suitable for the dish is used. It is possible.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a tableware dryer main body, and a frame 2 is fitted to an opening edge of a front surface thereof. 3 is a door,
It is stored in a door storage chamber 6 partitioned by a partition wall 5 above the drying chamber 4. The partition wall 5 has an exhaust hole 7 opening to the door storage chamber 6.
An on-off valve 8 made of a shape memory alloy is attached to the exhaust hole 7 on the drying chamber 4 side. Reference numeral 9 denotes a bottom plate, on which an outlet 10 is provided.
An on-off valve 8 'made of a similar shape memory alloy is also mounted on the drying chamber 4 side of the outlet 10. In addition, drying room 4
There is a basket 11 for storing dried items such as tableware on the bottom plate 9,
It can be installed on the main body wall rib 1a. 12
Is a chassis fixed to the lower portion of the bottom plate 9, to which a fan motor 13 and a heater 14 are attached. Air intake holes 15 and 16 are formed in the lower surface of the main body 1 and the chassis 12, respectively, and a temperature control controller 17, a compression type cooling device 18,
An electric motor 19 serving as a power of the cooling device 18 is fixedly mounted,
Refrigerant 20 (not shown) sent from compression type cooling device 18
A cylindrical bent metal tube evaporator 21 serving as a passage is accommodated in the side walls and the rear wall of the main body 1. Refrigerant 20
Is sent out from the compression-type cooling device 18 as shown by the arrow a, and circulates in the evaporator 21 in the order of the left side surface 1c → the rear surface 1d → the right side surface 1e → the rear surface 1d → the left side surface 1c →. While
It flows as it is sucked into the steam inlet 22 of the compression type cooling device 18.

A thermistor 23 is attached to a wall surface of the partition wall 5 on the drying room side. 24 is the main power switch of the tableware dryer main body, 25 is a drying switch with a timer function for starting the drying of the tableware and determining the drying time, 26 is heating and keeping the tableware warm after drying (the position of the display height in FIG. 1) This is a switch for turning on the function of keeping the temperature at two stages of the temperature when cooling is set (when set to the low position in Fig. 1) and the cooling and keeping (when set to the low position in Fig. 1). When the switch is set to the position, both functions of the above two steps are OFF
That is, this is the set position when it is not necessary to operate the heat retaining function after the drying function ends.

In addition, as shown in FIG.
Are the microcomputer 27, the relay A, the relay B, the electrical components such as the resistors R _a , R _b , R _c , R _d and the microcomputer 27.
It is composed of the DC power supply circuit supplying a power supply voltage value V _cc to the component (not shown) or the like etc., the thermistor 23 and the resistor
The divided voltage V _P00 with _Ra is input to the input port P00 of the microcomputer 27, and the input port P01 is provided with a changeover switch.
The 26 setting positions of the divided voltage of the cooling heat retaining position 26a and the resistor R _b and the resistor R _c, insulation function OFF position 26b the power supply voltage V
_cc, is inputted kept set voltage V _P01 of 3 stages: dividing the voltage of the high-temperature thermal insulation position 26c and the resistor R _b and the resistor R _d, the input port P02, a drying switch 25, timer ON state
_VH and _VL when the timer is off.
_P02 has been entered. Relay A and relay B are connected to output ports P10 and P11 of microcomputer 27, respectively.
Upon receiving the N signal, the output Aout, Bout is caused to output the 100V voltage of the AC power supply 28. The motor 19 is connected to the output of the relay A, and the fan motor 13 and the heater 14 are connected to the output of the relay B. The compression type cooling device 18 includes a compressor 29, a condenser 30, an expansion valve
31, one end of the evaporator 21 is connected to the expansion valve 31 and the other end is connected to the steam intake port 22 connected to the compressor 29, and the compressor 29 is configured to be driven by the electric motor 19. I have.

In the above configuration, the operation of the embodiment will be described with reference to FIGS.
This will be described with reference to FIGS. 4 and 5. First, regarding the drying function, turn on the main power switch 24 and turn on the drying switch.
When 25 is turned on to set the drying time t, _VH is input to the input port P02 of the microcomputer 27, 100 V AC is output to the output Bout of the relay B, and the fan motor 13 and the heater 14 are driven. Then, the fan motor 13 sucks air from the intake hole 15 to the intake hole 16 as shown by an arrow b, and sends it as hot air from the outlet 10 to the drying chamber 4 as shown by an arrow c at the heater 14. At this time, the valve 8 'is in an open state warmed by hot air. The warm air sent to the drying chamber 4 dries the dishes placed on the basket 11 while convection in the room, and is sent once to the door storage chamber 6 through the upper exhaust hole 7,
Next, it is discharged outside through a gap 1b between the frame 2 and the door 3.
At this time, the valve 8 is also warmed by the hot air and is in an open state. This drying operation is continuously performed for a time t set by the drying switch 25.

During the period t, the temperature in the drying chamber 4 rises rapidly, so that the resistance value of the thermistor 23 decreases, the input port P00 voltage V _P00 of the microcomputer 27 increases, and naturally the tableware temperature T _D from the initial room temperature T _a, it becomes higher as shown in Figure 4. When the drying period t has elapsed and the signal of the drying switch 25 is switched to _VL , the microcomputer 27 outputs an OFF signal from the output port P11 to the relay B,
The relay B output Bout is opened from 100 V AC, and the fan motor 13 and the heater 14 are turned off. Next, the operation of the heat retention function after the end of the drying operation will be described. First, when the drying operation is completed and the changeover switch 26 is set to the OFF position 26b, the input port P01 voltage V
_P01 becomes V _P01 = V _cc and the output port input becomes V _P02 = V _cc
H (drying function turned on) or V _P01 ≠ V _cc (selection switch
Since the microcomputer 27 continues to operate in the loop of A → B → C → D → A in FIG. 5 except that the position 26 is set to the cooling / insulating position 26a or the high-temperature keeping position 26c).
Signal voltage V _P00 and tableware temperature T _D from the thermistor 23 continues to drop both the temperature T _D of the dishes go back to any again room temperature T _a. Next, when the changeover switch 26 is set to the cooling and warming position 26a, the input port P01 of the microcomputer 27 is
The voltage is And the microcomputer 27 is A → E → F in FIG.
Operation, the hysteresis setting level for cooling and warming V _HH
And determine the _VHL . If the hysteresis voltage is V _hys , this level is V _HH = V _{P01 (L)} + V _hys , V _HL = V _{P01 (L)} -V
_hys two levels. Then, the microcomputer 27 comprises the two levels V _HH and V _HL and the thermistor 23
By comparing with the signal voltage V _P00 from the relay A
Outputs an ON / OFF signal from the output port P10, and in response, the relay A turns ON / OFF the AC 100 V to the output Aout, and the motor 19
Is performed. That is, the microcomputer 27
If G determines that V _P00 is greater than V _HL , it immediately turns on the relay A output Aout and starts driving the motor 19. The microcomputer 27 remains at H until V _P00 ≤ V _HL.
→ D → A → E → F → G → H The detection operation is repeated repeatedly, and when V _P00 ≤ V _HL , OF is relayed from P10 to relay A.
The relay A outputs the F signal, and the relay A receives the signal and sets Aout to open to stop the motor 19, so that the cooling function is stopped.
Then, I → J → K → until V _P00 ≧ V _HH
To repeat the detection operation in the loop of I, turn on the drying switch again.
Or 25 is turned ON, whether the changeover switch is switched to 26b or 26c, cooling if no temperature T _D dishes remain stopped gradually increases. Then, when V _P00 ≧ V _HH , the microcomputer 27 turns on the relay A again.
A signal is output, AC 100V is output to Aout, and the cooling function is restarted. The duty control of the compression type cooling device 18 of the temperature control device 17 as described above, the temperature T _D of the dishes will be stable in the low temperatures T ₁ set by the changeover switch 26. Next, when the changeover switch 26 is set to 26c (high temperature keeping position), the input port P01 of the microcomputer 27 is similarly set.
To Is input, thermistor signal voltages V _P00 and V
_{P01 (H)} a 'is compared with _{(= V P01 (H) +} V hys), (L) V P00 <V HH' based on the microcomputer 27 at the set hysteresis voltage high side V _HH any in if the microcomputer 27P11 ON output → relay B output Bout AC 100V output → the fan motor 13, the heater 14 drive, is heating function is ON, V _P00 and T _D are both increased. Until V _P00 ≧ V _HH ′, the microcomputer 27 repeats the detection operation in a loop of M → D → A → E → L → M. Therefore, the heating function continues to be ON, and the heating is continued when V _P00 ≧ V _HH ′. Stop the function, V _P00 ≤ V _HL ′
(= V _{P01 (H)} -V _hys ) or the drying switch
H → J until 25ON or switch 26 becomes 26a or 26b
The duty control of the fan motor 13 and the heater 14 of the temperature control controller 17 in which the heating function is kept OFF by the loop of → K → N and the heating function is turned ON again when V _P00 ≦ V _HL ′ The tableware temperature T _D is set by a changeover switch
Follow the stabilization in hot temperature T ₂ that is set at 26.

 Next, another embodiment of the present invention will be described below.

In this case, as shown in FIGS. 6 and 7, a drying chamber having both the heating and cooling function and the cooling and heating function described in the first embodiment is provided in the tableware dryer body 1 '. And 4 ". The door storage chamber 6 'for storing the door 3' of the first drying chamber 4 'is provided above the main body 1'. A surface heater 14 'for heating or cooling the inside of the upper drying chamber 4' and an evaporator 21 'are alternately arranged in both side walls and a rear wall of the upper drying chamber 4'. A thermistor 2 for detecting the temperature in the upper drying chamber 4 'is provided on the wall on the drying chamber 4' side of the partition wall 5 'from the 6'.
3 'is attached. Bottom plate 9 'of upper drying chamber 4'
Is made of a heat insulating material and also serves as a partition wall for a door storage room 6 "for storing the door 3" of the lower drying room 4 ". A rear part of the door storage room 6" Drying room 4 '
Is provided with a shielding wall 33 for preventing air sent from the arrow d to the arrow e from flowing into the door storage chamber 6 "from the ventilation chamber 32 of the upper drying chamber 4 '. The lower drying chamber 4" and the door storage are provided. The chamber 6 "is partitioned by a second partition wall 5" made of a heat insulating material, and a thermistor 23 "for detecting the temperature in the lower drying chamber 4" is attached to the lower surface of the partition wall 5 ". A bottom plate 9 "of the drying chamber 4" is also made of a heat insulating material, and a chassis 12 'to which a fan motor 13' is attached is fixed at a lower portion. Further, a side wall and a ventilation chamber 32 of the lower drying chamber 4 "and a lower drying chamber. As in the upper drying chamber 4 ', a surface heater 14 "and an evaporator 21" are alternately arranged in an inner wall 34 formed of a heat insulating material on the rear side partitioning the 4 ". Temperature control device 1
7 ', a compression cooling device 18a on the upper drying chamber 4' side, a compression cooling device 18b on the lower drying chamber 4 "side, these two cooling devices 18a, 18b
A driving device 19 'composed of two electric motors capable of driving the motors simultaneously or one by one is fixedly mounted. 24 'is a main power switch of the tableware dryer main body, 25a is a drying switch for turning on a drying function of the upper drying chamber 4', and 25b is a lower drying chamber 4 ".
The drying switch 25c for turning on the drying function is a time switch for setting the drying time, and starts the timer operation from the time when the drying switch 25a or the drying switch 25b or both of them are turned on. 26 'is an upper tableware switch, and 26 "is a lower tableware warming switch, both of which have a function of switching between three stages of a warming function OFF, a cooling warming function ON, and a heating warming function ON. The refrigerant discharged from the cooling device 18a and passing through the evaporator 21 'passes through the bottom plate 9 "and passes through a gap 35 provided between the ventilation chamber 32 and the rear wall of the main body 1' as shown by an arrow f. Upper drying room 4 'rear wall
The gap enters into the gap 35 'provided between the main body 1' and the rear wall of the main body 1 ', from which the left side 1'c' of the main body 1 '→ the gap 35' → the right side 1'e '→ the gap 35' → the left side 1 'B' and finally go through the gap 35 '→ the gap 35 again,
As described above, the heat in the upper drying chamber 4 'is absorbed in the path of suction to the steam suction port 22a of the compression cooling apparatus 18a to cool the inside of the upper drying chamber 4'. The refrigerant discharged from the evaporator 21 ″ passes through the chassis 12 ′ and the bottom plate 9 ″ as indicated by an arrow h → i, and enters the inner wall 34 → the main body 1 ′ and the left side wall 1 ′ c as in the case of the above-mentioned upper cooling system ′ → inner wall
34 → body 1 'right wall 1'e' → inner wall 34 → left wall 1 '
c 'and finally the compression cooling device 18b
By absorbing heat in the lower drying chamber 4 ″ in the course of suction into the steam suction port 22b, the inside of the lower drying chamber 4 ″ is cooled. Therefore, in the tableware dryer of the present embodiment, the drying function in the upper drying chamber 4 'can be performed by turning on the drying switch 25a and setting the drying time by the timer switch 25c. And the surface heater 14 'is turned on, and the surface heater 14' is provided with a fan motor 13 'for supplying steam, which is formed by evaporating moisture attached to tableware stored in the drying chamber 4', to the lower portion of the main body 1 'by a fan motor 13'. An outlet of the bottom plate 9 from 15 'to an upper drying chamber 4' through a suction hole 16 'provided in the chassis 12' through a path of arrow d → e.
The air sent from 10 'is exhausted through the exhaust holes 1'b' to dry the air. The heating and keeping function in the upper drying chamber 4 'is controlled by receiving a signal from the thermistor 23'. ′ Controls the duty of the fan motor 13 ′ and the surface heater 14 ′ (at this time, the cooling device 18 a
The temperature of the tableware in the upper drying chamber 4 'is kept constant at the high temperature set by the changeover switch 26'. The function of cooling and maintaining the temperature in the upper drying chamber 4 'is thermistor 23'. In response to this signal, the temperature control controller 17 'controls the duty of the driving device 19'. (If the lower drying chamber 4 "does not operate the heating / heating function at this time, the fan motor 13 'and the surface heater 14' Is turned off, and if operated, only the surface heater 14 'is turned off.) The cooling function by the compression type cooling device 18a is turned on / off, and a switch for changing the temperature of the tableware in the upper drying chamber 4' is set. The drying, heating and cooling functions of the lower drying chamber 4 ″ are the same as the operations in the upper drying chamber 4 ′, and the fan motor 13 is used during the drying function. 'And the surface heater 14 "are continuously ON (fan motor Wind flows to the exhaust hole 1'b "from j) during the heating insulation function fan motor
When the 13 'and the surface heater 14 "are in a duty drive state and the cooling and warming function is in effect, the drive device 19' and the compression type cooling device 18b are in a duty drive state. As described above, the dish dryer of this embodiment is Since the drying chamber having the function of the first embodiment is provided independently at the upper and lower two stages by a partition wall made of a heat insulating material and a valve 8 "made of a shape memory alloy, the upper stage is cooled and kept warm and the lower stage is arranged. It has a function that can be switched according to the use of the user, such as heat insulation, heat insulation (or vice versa) or upper and lower stage cooling insulation (heat insulation possible).

In the above embodiment, the upper and lower drying chambers 4 'and 4 "can be switched between heating and cooling and cooling and heating. However, the present invention is not limited to this. For this reason, the upper drying chamber 4 ′ may be dedicated to the drying function and heat insulation, and the lower drying chamber 4 ″ may be dedicated to the drying function and cooling insulation (the upper and lower dedicated functions may of course be reversed). This achieves the effects of the present invention.

Effects of the Invention As is clear from the above description of the embodiments, the present invention has the following effects.

In other words, the tableware dryer of the present invention, in addition to the drying function,
It has a cooling and warming function to store the temperature of the tableware after drying at a certain low temperature, and a heating and warming function to store it at a certain high temperature. If you want to use the tableware of the above, you can do extra work such as putting the dried tableware in hot water again, heating it in hot water, cooling it in ice water and getting it wet and wiping it again, or reheating the tableware Eliminate waste of time, such as drying and heating with a dryer, and unsanitary conditions, such as storing in a freezer such as a refrigerator to cool dishes. The operation is simplified, and according to the second embodiment, the low-temperature tableware and the high-temperature tableware can be used at a time, which is more convenient and improves the efficiency of the cooking operation.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dish dryer showing one embodiment of the present invention,
FIG. 2 is a cross-sectional view taken along the line II, FIG. 3 is a circuit diagram of the main part, FIG. 4 is a time chart showing the operation of the three functions of drying, heating and cooling, and cooling, and FIG. FIG. 6 is a perspective view of a dish dryer showing another embodiment, and FIG. 7 is a sectional view taken along the line I'-I 'of the computer. 1,1 '... Dish dryer body, 4,4', 4 "... Drying room, 5"
…… Partition wall (insulation material), 9 ', 9 ″ …… Bottom plate (insulation material),
13,13 '... fan motor, 14 ... heater, 14', 14 "...
... surface heaters, 17, 17 '... temperature control devices, 18, 18a, 18b ...
… Compression cooling device, 19 …… motor, 19 ′ …… drive device,
21,21 ', 21 "... Evaporator, 23,23', 23" ... Thermistor, 24,24 '... Main power switch, 25 ... Dry switch with timer function, 25a, 25b ... Dry switch, 25c Time switch for setting the drying time, 26, 26 ', 26 "... Changeover switch, 34 (rear side) ... Inner wall (insulation material).

Claims (3)

(57) [Claims] 1. A heating device having at least one drying chamber for heating the drying chamber, a drying switch for driving the heating device, at least one thermosensitive element for detecting a temperature in the drying chamber, and a cooling device. Switching means for selecting the driving of the heating device and the cooling device, a stop switch for stopping the driving of the heating device and the cooling device, and the driving of the heating device and the cooling device by a signal from the heat-sensitive element A dish dryer including temperature control means for performing control. 2. A drying apparatus comprising at least two drying chambers divided by a partition wall made of a heat insulating material or the like, one of the drying chambers heating a drying chamber, a drying switch driving the heating apparatus, At least one thermosensitive element for detecting the temperature in the drying chamber, and a temperature control unit for controlling the driving of the heating device based on a signal from the thermosensitive element, and the other drying chamber includes a heating device for heating the drying chamber. And a drying switch for driving the heating device, a cooling device, and at least one thermosensitive element for detecting a temperature in the drying chamber, and a temperature control means for controlling the driving of the cooling device based on a signal from the thermosensitive element. The tableware dryer according to claim 1, wherein a drying chamber exclusively used for heating and keeping heat and a cooling chamber exclusively used for keeping heat are provided. 3. A plurality of drying chambers divided by a partition wall made of a heat insulating material or the like, wherein each of the drying chambers can be switched between a heating function and a cooling function. The dish dryer according to claim 1, wherein