JPH05154042A - Cabinet with steam ejecting fan - Google Patents

Abstract

PURPOSE:To reduce noises and electric power consumption by controllably operating a steam ejecting fan according to a signal of a temperature sensor provided in a steam ejecting port. CONSTITUTION:A temperature detecting device 67 detects a room temperature to send the signal to an amplification delaying section 74 and rotational frequency controlling section 75. When steam is not ejected, the temperature of a steam ejecting port 63 is low so that the rotational frequency controlling section 75 rotates a steam ejecting fan 51 with the low rotational frequency. When cooking proceeds to heat a pan 45 and raise the temperature of the steam ejecting port 63 with steam, the rotational frequency of the steam ejecting fan 51 is increased to eject quickly the steam. The amplification delaying section 74 judges the room temperature according to the first signal of the temperature detecting device 67 and applies voltage to a coil 72 for relaying a delay time determined by the room temperature to close a normally opened contact 73 and delaying the operation of the steam ejecting fan motor 51. After the completion of cooking, the delay time is short in the high room temperature and long in the low room temperature to control the operation of the steam ejecting fan.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage box with a steam discharge fan which is adapted to perform cooking while storing cooking utensils such as rice cookers in the storage box.

[0002]

2. Description of the Related Art In recent years, while the number of storages in which cooking utensils can be stored and used increases, the size and shape of cooking utensils themselves, the position of steam cylinders, heating means, etc. have also changed.

Conventionally, this kind of storage has been disclosed in Japanese Utility Model Publication No. Sho 61-37.
The configuration is as shown in Japanese Laid-Open Patent Publication No. 317, and is shown in FIGS.
Will be described with reference to.

As shown in FIG. 4, a storage stand 3 is provided inside a storage cabinet 1 and is movable back and forth by a drawer rail 2.
The cooking utensil 4 is placed at a predetermined position on the storage table 3. A ventilation device 7 including a steam discharge fan 5 and a steam discharge motor 6 is provided above the storage case 1.
The ventilation device 7 sucks the outside air from the intake port 8 and uses the cooking utensil 4
The steam generated from the exhaust gas is discharged from the exhaust port 9.

As shown in FIG. 5, the ventilator 7 has a transformer 11 which constitutes a detection circuit 10 for detecting a current value flowing to the cooking utensil 4, and an amplification delay circuit 12 which amplifies the signal detected by the transformer 11, It is controlled by opening and closing the contact 14 of the relay with the relay coil 13.

In the above structure, when the cooking utensil 4 is turned on, cooking is started. At this time, the current value flowing to the cooking utensil 4 is detected by the transformer 11, and the signal detected by the transformer 11 is amplified by the amplification delay circuit 12,
Voltage is applied to the relay coil 13 for a certain period of time and the normally open contact 14
Is closed and the ventilation device 7 operates. Then, when cooking is completed and the temperature is switched to heat retention or the like, the value of the current flowing to the cooking utensil 4 becomes small. Therefore, after the time set by the delay amplification circuit 12, no voltage is applied to the relay coil 13 and the relay contact 14 is opened. Then, the operation of the ventilation device 7 is stopped.

[0007]

However, in such a conventional storage box with a steam discharge fan, even if the amount of steam generated from the cooking utensil 4 changes, the steam is surely discharged when the amount of steam is maximum. The steam exhaust fan 5 of the ventilation device 7 operates at a high rotation speed set to be possible. for that reason,
When the amount of steam is small, not only the noise of the steam exhaust fan 5 is high but also electricity is consumed more than necessary, which is uneconomical. Further, even after the cooking is completed, the steam exhaust fan 5 is operated for a certain period of time to exhaust the steam in the storage, but when the room temperature is high, the dew condensation at the exhaust port 9 is small, so the delay time may be short. It was uneconomical to operate for a certain period of time when it was low.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems and to reduce the noise and the electricity consumption.

A second object is to provide an economical storage box with a steam exhaust fan.

[0010]

In order to achieve the first object, the present invention has a storage part for storing cooking utensils that generate steam, and discharges the generated steam from a steam outlet to the outside of the storage. A steam processing unit equipped with a steam discharge fan and a rotation speed control unit for varying the rotation speed of the steam discharge fan are provided, and this rotation speed control unit outputs the signal from the temperature detector provided at the steam discharge port to the cookware. When the amount of generated steam is high and the discharge temperature is high, the rotation speed is high, and when the amount of steam is low and the temperature is low, the rotation speed is low and the steam discharge fan is controlled to operate.

In order to achieve the second object, a drive control unit for the steam exhaust fan is provided, and an amplification delay unit for operating the steam exhaust fan for a set time after receiving a signal from the drive control unit is provided. The delay time is configured to control the operation of the steam exhaust fan short when the room temperature is high and long when the room temperature is low by the signal of the temperature detector.

[0012]

According to the present invention, in the above structure, the rotation speed is high when a large amount of steam is generated from the cooking utensil and the discharge temperature is high due to the signal from the temperature detector provided at the steam discharge port, and the rotation speed is low and the temperature is low Has a low rotational speed and controls the operation of the steam exhaust fan. After the cooking is completed, the operation of the steam exhaust fan is controlled by the signal from the temperature detector to be short when the room temperature is high and long when the room temperature is low. That is, the steam exhaust fan is operated for a time suitable for the room temperature at a rotation speed suitable for the amount of steam generated from the cooking utensil.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to.

As shown in the figure, the storage box 31 has a storage section 32.
A storage stand 34 is provided in the storage section 32 and is movable back and forth by a drawer rail 33. A guide 36 for determining the position where the cooking utensil 35 is placed is provided on the storage table 34. The guide 36 is moved in the guide portion 38 by loosening the fixing screw 37, and is brought into contact with the cooking utensil 35 so that the cooking utensil 35 is brought into a predetermined position.
To position. A vent 39 is provided on the outer periphery of the storage table 34. The vent 39 is the intake port 4 provided at the bottom of the storage 31.
It communicates with 0. A steam processing unit 42 including a fan unit 41 is provided above the storage unit 32, and a front surface is covered with a door 43. Door 43 and storage 32
Has an insect-proof structure by packing 44. The cooking utensil 35 is a pan 45 for storing cooked food such as rice inside.
And a heating element 46 for heating the pan 45. The upper surface of the pan 45 is covered with a lid 47, and a steam cylinder 48 that penetrates a part of the lid 47 is provided.

The steam processing section 42 includes a storage section 32 and a partition plate 4.
A fan unit 41 provided with a steam discharge fan 50 and a steam discharge motor 51, which are provided above and separated by 9, and a steam guide which is inclined in an inverted funnel shape by opening upper and lower openings 52 and 53 as upper and lower openings, respectively. It is constituted by 54. A lower end opening portion 53 of the steam guide 54 opens into the storage portion 32, and a groove-shaped water collecting portion 56 is formed on the outer periphery thereof. The inner surface of the inclined portion 57 of the steam guide 54 is provided with unevenness in the vertical direction to relieve the surface tension of the water droplets that adhere to it, guide the soup to the water collecting portion 56, and prevent it from dropping into the cooking utensil 35 in the form of droplets. ing. The drainage port 58 is provided at the lowest point of the water collecting portion 56 of the steam guide 54, and is connected to the water receiving guide 60 by the tube 59. The water receiver 61 is detachably attached to the water receiver guide 60. The fan unit 41 includes a fan case 62 having the steam exhaust fan 50 built therein, a steam exhaust port 63 having one end opening to the front, and a duct 64 having the other end communicating with the upper end opening 52 of the steam guide 54.
Is formed by. An upper wall surface 65 that covers the upper end opening 52 has an inverted funnel-shaped slope. A water drain hole 66 is provided in the fan case 62 and at the lowest point which is inclined like a funnel from the steam exhaust port 63 and the upper end opening 52 of the steam guide 54. Further, the vapor exhaust port 63 is provided with a temperature detecting device 67 for detecting the exhaust temperature.

The control circuit 68 detects the current value flowing from the outlet 69 to the cooking utensil 35 by the transformer 70,
The drive control unit 71 that drives the steam discharge fan motor 53 when the current value supplied to the cooking utensil 35 is equal to or greater than the set value.
Then, the signal detected by the transformer 70 receives the signal of the temperature detecting device 67, and the relay coil 72 receives the signal from the contact 7 of the relay.
By opening and closing 3, the steam exhaust fan motor 51
Is constituted by an amplification delay unit 74 that operates for a set time, and a rotation speed control unit 75 that receives a signal from the temperature detection device 67 and changes the rotation speed of the steam discharge fan motor 51 by phase control.

In the above structure, the operation will be described. When the cooking utensil 35 is turned on, cooking is started. At this time, the drive control unit 71 detects the current value flowing through the cooking utensil 35 by the transformer 70 and sends the signal detected by the transformer 70 to the amplification delay unit 74. Further, the temperature detection device 67 detects the room temperature and sends a signal to the amplification delay unit 74 and the rotation speed control unit 75. The above operation is performed every fixed cycle. In the amplification delay unit 74, the room temperature is first judged from the signal of the temperature detecting device 67, the delay time corresponding to the room temperature is determined, and thereafter, each time the signal of the transformer 70 comes, a voltage is applied to the relay coil 72 for a certain time, The normally open contact 73 is closed to operate the steam exhaust fan motor 51 for a certain period of time.
Then, the flow of air that is sucked from the lower end opening 53 of the steam guide 54 through the intake port 40, the ventilation port 39 of the storage stand 34, and is discharged from the steam exhaust port 63 to the outside of the storage 31.
That is, an air flow from the bottom to the top of the storage section 32 is generated. At this time, since the steam is not discharged, the temperature of the steam exhaust port 63 is low, and therefore the rotation speed control unit 75 causes the steam discharge fan 51 to rotate at a low rotation speed. Then, when cooking proceeds and the pan 45 is heated, steam is discharged from the steam cylinder 48. The steam is sucked together with the air flowing from the bottom to the top in the storage section 32, passes through the steam guide 54, passes through the duct 64 and the fan case 62, and is discharged to the outside of the storage box 31 through the steam exhaust port 63. When the temperature of the steam exhaust port 63 rises due to the steam, the rotation speed controller 75
Discharges steam promptly by increasing the rotation speed of the steam exhaust fan 50. Then, when cooking is completed and the amount of steam is reduced, the rotation speed of the steam exhaust fan 50 is lowered, and when the cooking is completed and the temperature is switched to heat retention, the current value flowing to the cooking utensil 35 is reduced. The transformer 70 no longer detects the current value flowing to the cooking utensil 35, and the transformer 70 no longer sends a signal to the amplification delay unit 74. Then, in the amplification delay unit 74, the first temperature detection device 6
The room temperature is judged by the signal of No. 7 and the voltage is applied to the relay coil 72 for the delay time determined according to the room temperature to make the normally open contact 73
Is closed and the steam exhaust fan motor 51 is delayed.
After the delay time passes, the voltage is not applied to the relay coil 72, the relay contact 73 is opened, and the operation of the steam exhaust fan 53 is stopped.

Now, the highly condensing vapor always causes soup on the contact surface. In the steam guide 54, the inclined portion 57
The soup is quickly collected on the water collecting portion 56 along the wall surface before it becomes water droplets due to the unevenness provided on the inner surface in the vertical direction. Also in the upper end opening portion 52, the soup dew condensed on the upper wall surface 65 flows along the inclined surface and the wall surface of the steam guide 54 to be collected in the water collecting portion 56, or flows into the fan unit 41. The soup that has condensed in the fan unit 41 flows into the fan case 62 and is collected in the water collecting portion 56 through the water draining hole 66. The soup sauce collected in the water collecting portion 56 is provided at the lowest point of the water collecting portion 56 and is discharged from the drain port 58 into the tube 5
The water receiver passes through the guide 9, and is stored in the water receiver 61.

As described above, in the storage box with the steam discharge fan according to the embodiment of the present invention, the rotation speed of the steam discharge fan is controlled according to the amount of steam, so that the noise is low and the electricity consumption is small and economical. Therefore, it is very convenient for the user.

[0020]

As is apparent from the above embodiments, according to the present invention, a storage portion for storing cooking utensils that generate steam, and a steam exhaust fan that exhausts the generated steam from the steam outlet to the outside of the storage. And a rotation speed control unit for changing the rotation speed of the steam discharge fan. The rotation speed control unit generates steam generated from the cooking utensil by a signal from a temperature detector provided at the steam discharge port. When the steam temperature is high and the discharge temperature is high, the rotation speed is high, and when the steam is low and the temperature is low, the rotation speed is low and the steam discharge fan operates.The steam speed is always suitable for the amount of steam generated from the cookware. The exhaust fan can operate. Therefore, when the steam generated from the cookware is high and the discharge temperature is high, the rotation speed is high, and when the steam is low and the temperature is low, the rotation speed is low and the steam discharge fan operates, which reduces noise and consumes electricity. The amount can be reduced.

Further, after receiving the signal from the drive control unit, an amplification delay unit is provided in which the steam exhaust fan is operated for a set time. This delay time is short when the room temperature is high due to the signal from the temperature detector. When the room temperature is low, the delay time is changed depending on the room temperature so that the steam exhaust fan is operated for a long time. Therefore, the steam exhaust fan can be economically operated for an optimum time period when the dew condensation at the exhaust port is small.

[Brief description of drawings]

FIG. 1 is a side sectional view of a storage box with a steam exhaust fan according to an embodiment of the present invention.

FIG. 2 is a front sectional view of the same.

FIG. 3 is a block diagram of the electric circuit.

FIG. 4 is a side sectional view of a conventional storage box with a steam exhaust fan.

FIG. 5 is a block diagram of the electric circuit.

[Explanation of symbols]

 31 Storage Cabinet 32 Storage Section 35 Cookware 39 Vent 41 Fan Unit 42 Steam Processing Section 50 Steam Discharge Fan 63 Steam Exhaust 67 Temperature Detector 68 Control Circuit 71 Drive Control 74 Amplification Delay 75 Rotation Control

Claims (2)

[Claims] 1. A storage part for storing cooking utensils that generate steam, a steam processing part having a steam discharge fan for discharging the generated steam to the outside of the storage from a steam discharge port, and an operation of the steam discharge fan. A drive control unit to start and a rotation speed control unit that changes the rotation speed of the steam discharge fan are provided. This rotation speed control unit generates much steam from the cooking utensil in response to a signal from a temperature detector provided at the steam discharge port. A storage box with a steam discharge fan that controls the operation of the steam discharge fan when the discharge temperature is high and the rotation speed is high, and when the temperature is low and the temperature is low, the rotation speed is low. 2. An amplification delay unit for operating the steam exhaust fan for a set time after receiving a signal from the drive control unit,
The storage box with a steam exhaust fan according to claim 1, wherein the delay time is controlled by a signal from the temperature detector to be short when the room temperature is high and to be long when the room temperature is low.