JPH0391642A - System range hood fan - Google Patents

Abstract

PURPOSE:To enable an automatic changing-over into a discharge amount of air to be attained in correspondence with hot steam generated or oily smoke by a method wherein an amount of discharged air during a discharging operation is varied in response to the number of heating portions kept under an electrical energized state detected by a sensing means. CONSTITUTION:An electrical heating and cooking device 2 provided with a plurality of heating portions 3 to 5 is arranged. A range hood fan 6 is arranged above this electrical heating and cooking device 2. An electrical energization or deenergization of the heating portions 3 to 5 is detected and at the same time a sensor means 33 for use in sensing the number of heating portions 3 to 5 kept at their electrical energized condition is provided. This sensing means 33 may start or stop a ventilation operation of the range hood fan 6 in response to a sensing of an electrical energization of any of the heating portions 3 to 5 and an electrical shutting off of all the heating portions 3 to 5. An amount of discharged air during the ventilating operation is varied in response to the number of heating portions 3 to 5 kept at an electrical energized condition detected by the sensing means 33. With such an arrangement, since a selection of the amount of discharged air becomes an amount of air corresponding to the number of heating portions 3 to 5 kept at its electrical energized state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a system range hood fan in which the operation of the range hood fan is controlled in conjunction with an electric cooking device.

(Prior Art) Most range hood fans installed in kitchens are operated by manually operating a switch provided at the front of the hood.

Needless to say, the range hood fan is operated to exhaust steam and oil smoke generated during cooking, but in the manually operated type mentioned above, it is used to control the start and end of cooking in the cooker. In addition to the operation, a switch must also be operated.

On the other hand, a heating cooker usually includes a plurality of heating sections. For example, a recent electric cooker that uses a halogen lamp heater as a heat source usually has a three-day heating unit (heating section) including a roaster section. In an electric heating cooker equipped with such a multi-port heating unit,
- Naturally, the amount of steam, oil smoke, etc. generated differs between when cooking with only the heating unit for the mouth and when cooking using all the heating units for the third day. However, in the above-mentioned manually operated range hood fan, the ventilation air volume must be manually changed depending on the amount of steam and oil smoke generated.

By the way, on the premise that a gas range is used as a heating cooker, a range hood fan is equipped with a gas sensor and configured to automatically control the operation of the range hood fan in response to the detection operation of this gas sensor. be. When switching the ventilation air volume with this device, the exhaust air volume is controlled based on the gas concentration detected by the gas sensor, but the gas concentration in the air that comes into contact with the gas sensor is determined by the heating part (gas burner) during cooking. It is not necessarily proportional to the number of vents, and it is difficult to accurately control the exhaust air volume to be appropriate for the amount of steam, oil smoke, etc. generated.

(Problems to be Solved by the Invention) As mentioned above, in the manually operated range hood fan, starting and stopping the operation and switching the exhaust air volume must all be done manually, which is troublesome and also requires the use of a gas sensor. With range hood fans that can be automatically operated in combination, it is difficult to control the exhaust air volume to match the amount of steam, oil smoke, etc. generated.

The present invention has been made in view of the above circumstances, and its purpose is to link the operation of the range hood fan to cooking with the electric cooker, on the premise that the range hood fan is combined with an electric cooker. The range hood fan is a system that can automatically switch to the exhaust air volume that is suitable for the amount of steam and oil smoke generated depending on the number of heating parts that are energized. It is on offer.

[Structure of the Invention] (Means for Solving the Problems) The system range hood fan of the present invention includes an electric heating cooker equipped with a plurality of heating parts, and a range hood fan above the electric heating cooker. and detecting means for detecting energization or disconnection of the heating section and detecting the number of heating sections that are energized; Ventilation that starts and stops the ventilation operation of the range hood fan based on the detection of a power outage in the section, and changes the exhaust air volume during the ventilation operation according to the number of heating sections that are in the energized state detected by the detection means. It is equipped with operation control means.

In this case, it is preferable that the ventilation operation control means stops the ventilation operation of the range hood fan after a predetermined time delay from the time when the detection means detects the power outage of all the heating parts.

Further, the range hood fan may also be operable by manual operation, and a group of operation switches for this purpose may be provided in the electric heating cooker.

(Function) When the heating section of the electric heating cooker is energized to perform cooking, the ventilation operation of the range hood fan is started in response to the energization. In this case, when the number of heating parts in the energized state is one, the range hood fan performs ventilation operation in a state where the exhaust air volume is medium. Then, when the heating section at the negative opening is energized, if other heating sections are also energized, the exhaust air volume of the range hood fan increases in accordance with the number of heating sections that are energized. can be switched to

When all the heating parts are cut off, the operation of the range hood fan is also stopped. In this case, if the range hood fan is stopped after a predetermined period of delayed operation, the delayed operation will cause the steam and smoke that remains in the kitchen and the steam that rises from the food even after the power is cut off to the heating section to be removed. It can exhaust oil smoke, etc.

In addition, if a switch for manual operation of the range hood fan is provided, the range hood fan can be operated regardless of cooking with the electric cooking device, which is convenient for use. If the electric heating cooker is equipped with this, it will be easy to operate.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 3 shows a part of the kitchen, and an electric cooking device 2 is installed on the top of a cooking table 1 installed in the kitchen. This electric heating cooker 2 is equipped with heating units 3 to 5 serving as heating sections for a plurality of mouths, for example, three-day heating units, of which three-day heating units 3 and 4 are used to heat a pot or the like through an upper top plate 2a. The remaining heating unit 5 is installed in the roaster section and is used to grill fish and the like. Each of these heating units 3 to 5 is composed of, for example, a plurality of halogen lamps.

On the other hand, above the electric cooking device 2, a range hood fan 6 is arranged. This range hood fan 6 is
A fan 9 rotated by a fan motor 8 is disposed inside the hood 7, and the air sucked in from the opening at the bottom of the hood 7 by the fan 9 is discharged outside through an exhaust duct 10. There is.

Now, on the front side of the electric heating cooker 2, operation panels 12.
12 are provided, and these operation panels 12 include:
As shown in Figures 31i1!4, a power switch 13 and switch groups 14 to 16 for the heating units 3 to 5 are provided as appropriate. The switch groups 14 to 16 of each heating unit 3 to 5 are connected to switches 17 to 20 for "on" and "off" for turning on and off the power, and "output increase" and "output range" for adjusting the amount of heat generated, respectively. Become. Also, on one side of the operation panel 12, for example on the right side, there is a switch group 2 for the range hood fan 6.
1 is provided, and this switch group 21 includes "mode switching" for automatic/manual switching, "strong/weak switching" for switching the rotation speed of the fan motor 8 during manual operation, and a lamp 22 provided on the hood 7. It consists of "on/off" switches 23 to 25 for turning on and off electricity. And these "mode switching"
Above both the "strong/weak" switches 23 and 24, there is a display 26 consisting of a plurality of light emitting diodes for displaying the contents set by each switch 23 and 24.
is installed.

FIG. 2 shows the electrical control structure of the electric cooking device 2 and the range hood fan 6 as described above, and this will be explained below.

That is, the bus bar 28 directly connected to the AC power source 27
The heating units 3 to 5 each have a triac 30 to 32 connected to the bus bar 29 connected via the power switch 13.
are connected in parallel via. This triac 30~
32 is a drive circuit 34 controlled by a microcomputer 33.
The input (heat amount) of the heating units 3 to 5 is controlled by phase control of the triacs 30 to 32. The microcomputer 33 is supplied with power by a constant voltage circuit 35 connected between both bus bars 28 and 29, and is initialized by an initialization circuit 36 that detects the rise of the voltage of the constant voltage circuit 35. It is now possible to do so.

On the other hand, the fan motor 8 is configured as a capacitor-started induction motor, and has a main coil 8a and an auxiliary coil 8b.
are connected in parallel between both bus bars 28 and 29 via a triac 37. In order to change the rotational speed of the fan motor 8 in three stages by switching the taps of the auxiliary coil 8b, two intermediate taps of the auxiliary coil 8b are connected to the bus bar 28 via triacs 38 and 39, respectively.
It is connected to the. Further, a lamp 22 provided on the hood 7 is connected between both lines 28 and 29 via a triac 40. These triacs 37 to 40 are controlled on and off by a microcomputer 33. This microcomputer 33 is
As is clear from the explanation below, range hood fan 6
Detection means for detecting the start and stop of cooking in the electric heating cooker 2 and the number of heating units in an energized state during an automatic operation mode in which the operation of the electric heating cooker 2 is linked to cooking in the electric heating cooker 2, based on this detection. It functions as an exhaust operation control means for controlling the operation of the range hood fan 6. Note that the triacs 30 to 32 degrees 37 to 40, the microcomputer 33, the drive circuit 34, the constant voltage circuit 35, the initialization circuit 36, etc. are connected to the operation panel 12 of the electric cooking device 2.
It is located on the back side of the .

The microcomputer 33 is configured to receive ON signals for the various switches 17 to 20 and 23 to 25 manually, and the microcomputer 33 receives these manual signals and control programs stored in advance. Based on indicator 26, triac 30~32.37~4
0 control is performed.

That is, when the "mode changeover" switch 23 is set to automatic operation mode, the microcomputer 33 automatically operates the range hood fan 6 in conjunction with cooking in the electric cooking device 2. Furthermore, when the manual operation mode is set, the range hood fan 6 can be operated independently regardless of cooking with the electric cooking device 2.

The details of the control by the microcomputer 33 will be explained below. First, the case where the "mode changeover" switch 23 is set to automatic operation mode will be explained with reference to the flowchart of FIG. When the automatic operation mode is set using the "mode changeover" switch 23, the microcomputer 3
A state in which each operation flag described later in 3 is set to rOJ (step A), and it is monitored whether any of the "on" switches 17 of each switch group 14 to 16 is turned on (any heating unit is energized). becomes. In this state, for example, if the "person" switch 17 of the switch group 14 is turned on (YES in step B), the microcomputer 33 energizes the heating unit 3 (TRIAC 30 is turned on), and at the same time turns on the fan (step C). Rotate motor 8 at low speed (TRIAC 39 on, step D)
, the weak operation flag is set to "1" (step E).

Then, the fan 8 is rotated at a relatively low speed by the fan motor 8, and the range hood fan 6 starts ventilation operation in a weak operation state with a small exhaust air volume. discharge.

Now, during cooking in such a heating unit 3, if another "on" switch 17 of the switch group 15 is turned on (NO in step B).

YES in step F), the microcomputer 33
In addition to the heating unit 3, the heating unit 4 is also energized (TRIAC 31 is turned on) (Step G), and the fan motor 8 is switched to medium speed rotation (3 TRIACs are turned off,
The triac 38 is turned on (Step H), and the weak operation flag is cleared to "0" and the medium operation flag is set to "1" (Step I). By switching the fan motor 8 to medium speed rotation, the ventilation operation of the range hood fan 6 is
Switched to medium operation with small exhaust air volume.

Also, while heating this roller in heating units 3 and 4,
When the "person" switch 17 of the switch group 16 is turned on (
(NO in steps B and F, YES in step J), the microcomputer 33 also energizes (triac 32 on) the heating units 5 of the remaining rollers (step K
), switch the fan motor 8 to high speed rotation (TRIAC 38 OFF, TRIAC 37 ON, step L), clear the medium operation flag to "0", and set the strong operation flag to "
1" (step M). This fan motor 8
By switching to high speed rotation, the ventilation operation of the range hood fan 6 is switched to strong operation with a large air volume.

Now, when any one of the switch groups 14 to 16, for example, the "off" switch 18 of the switch group 14, is turned on, the on-latched state of the "on" switch 17 of the switch group 14 is released (YES in step F). ). Then, the microcomputer 33 turns off the power to the heating unit 3 while leaving the heating units 4 and 5 energized (step G), switches the fan motor 8 to medium speed rotation (step H), and sets the strong operation flag. is cleared to "0" and the medium operation flag is set to "1". Furthermore, for example, when the "off" switch 18 of the switch group 15 is turned on, the on-latch state of the "on" switch 17 of the switch group 15 is released (YES in step B), so the microcomputer 33 controls the heating unit. At the same time, the heating unit 4 is cut off while only the heating unit 5 remains energized (step C).
, switch the fan motor 8 to low speed rotation (step D),
Then, the medium operation flag is cleared to "0" and the weak operation flag is set to "1". From this state, when the "off" switch 18 of the switch group 16 is also turned on, the on-latched state of the "person" switch air of the switch group 16 is also released (NO in steps B, F, and J), so the heating Unit 5 is also cut off (step N). At this time, since the weak operation flag is set to "1" (YES in step O), the fan motor 8 is operated at a low speed for a predetermined period of time (step P).

Due to this delayed operation of the fan motor 8, steam, oily smoke, etc. that still rises from the food to be cooked for a while even after the power is cut off to the heating unit, and steam, oily smoke, etc. remaining in the kitchen are discharged. Then, when the delayed operation ends, that is, the ventilation operation of the range hood fan 6 ends, the weak operation flag becomes "0".
is cleared (step Q), and the state returns to the original state of monitoring whether any "on" switch air is turned on.

In addition, when all three heating units are energized and the "off" switches 18 of all switch groups 14 to 16 are turned on at the same time (all three heating units 3 to 5 are turned off at the same time), (NO in Step 0 and R, YES in Step S), the fan motor 8 is operated with a delay of a predetermined time while in a high speed rotation state (Step T), and as the delayed operation ends, the strong operation flag is set to "0". ” (Step U). In addition, while the heating unit on the third day is energized, turn off the ``off'' switch 1 of the heating unit on the third day.
8 are turned on at the same time (NO in step O, YES in step R), the fan motor 8 remains in the medium speed operating state and performs delayed operation for a predetermined time (step v), and upon completion of the delayed operation. The medium operation flag is cleared to "0" (step W).

Further, when the "mode changeover" switch 23 is set to the manual operation mode, the range hood fan 6 can be operated regardless of whether the heating units 3 to 5 are energized or disconnected. That is, when the "strong/weak changeover" switch 24 is turned on, the fan motor 8 is sequentially switched to low speed, medium speed, high speed operation, and power cut. It is possible to manually select and execute medium operation at a high air volume or strong operation at a large exhaust air volume.

According to this embodiment, when the automatic operation mode is set, the range hood fan 6 can be operated in conjunction with the cooking of the electric cooking device 2, and moreover, among the heating units 3 to 5, If the heating unit is energized for one bite, it is low, if it is three days, it is medium, and if it is three days, it is high.
The operation strength of the range hood fan 6 is automatically selected according to the number of heating units that are energized, so the operations for starting and stopping the operation of the range hood fan 6 and selecting the exhaust air volume are performed one by one. It is convenient to use as there is no need to do so.

Moreover, it detects the number of heating units that are energized,
Since the operating strength of the range hood fan 6 is automatically switched according to the number of fan units, ventilation operation can be performed with an exhaust air volume suitable for the amount of steam, oil smoke, etc. generated. Therefore, even though only the negative heating unit is energized (although it does not generate much steam or oil smoke), strong operation with a large air volume is performed, resulting in wasted electricity,
Especially in winter, the problem of feeling cold due to unnecessarily drawing in a large amount of cold outdoor air through exhaust can be prevented as much as possible.

Further, as in this embodiment, if the range hood fan 6 is made to stop after a predetermined time delay operation after the heating units 3 to 5 of the electric cooking device 2 are cut off, the heating units 3 to 5 can be turned off. Even after heating, steam and oil smoke generated from the food being cooked and remaining in the kitchen can be discharged, and the top plate 2a of the electric heating cooker 6 can also be cooled by the flow of air, reducing the risk of burns. can be reduced.

Furthermore, in this embodiment, the range hood fan 6 can also be operated manually, which is convenient for use.

In this case, switch group 2 for manual operation
1 is provided on the operation panel 12 of the electric heating cooker 2, so it is different from the conventional range hood fan shown in FIG. It is different, easier to operate, and switch group 2
1 is no longer exposed to oil smoke or relatively high temperature air. In addition, in the conventional range hood fan in which the switch group 41 is arranged in the front part of the hood 42, the switch group 41
In order to prevent oil and dust from adhering to the inside of the hood 42, a space separated from the inside of the hood 42 was formed by a partition plate 43, and the switch group 41 was disposed in this space. Since there is no need to provide a large space, it is possible to improve the air intake effect by forming air intake holes 44 in the front and upper surfaces of the hood 7, as shown in FIG.

Note that the heating section is not limited to a halogen lamp, but may be one that heats by electrical means, such as one using a resistance heating wire or one that performs induction heating using an alternating magnetic field.

[Effects of the Invention] As explained above, according to the present invention, the following excellent effects can be obtained.

The operation of the range hood fan is automatically started and stopped based on the energization and disconnection of the heating section of the electric cooking device, and the exhaust air volume of the range hood fan is adjusted depending on the number of ports in the energized heating section. Since it is automatically selected, there is no need to perform power on/off operations for the range hood fan or to select the exhaust air volume in addition to the power on/off operations for the electric cooking device. Since the air volume corresponds to the number of heating parts that are energized, it is possible to always operate at an appropriate air volume.

In addition, the range hood fan operates with a delay of a predetermined period of time after the power is cut off to the heating section, so even after the power is cut off to the heating section, the steam and smoke that rises from the food being cooked and remains in the room are discharged. can.

Furthermore, you can also manually operate the range hood fan.
This group of switches for manual operation is arranged on the electric heating cooker and is therefore easy to operate.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention,
Fig. 1 is a flowchart of automatic operation, Fig. 2 is an electric circuit configuration diagram, Fig. 3 is a perspective view of the electric cooking device and range hood fan, and Fig. 4 is an enlarged front view of the operation panel of the electric cooking device. FIG. 5 is a partially enlarged longitudinal sectional side view of the hood of the range hood fan, and FIG. 6 is a view corresponding to FIG. 5 showing a conventional range hood fan. In the figure, 2 is an electric cooking device, 3 to 5 are heating units (heating parts), 6 is a range hood fan, 8 is a fan motor,
14 to 16 are a group of switches for the heating unit, 21 is a group of switches for a range hood fan, and 33 is a microcomputer (detection means, ventilation operation control means).

Claims (1)

[Claims] 1. An electric heating cooker equipped with a plurality of heating parts, a range hood fan disposed above the electric heating cooker, and a range hood fan that detects energization and disconnection of the heating part and energizes the heating part. a detection means for detecting the number of heating parts in a state, and ventilation of the range hood fan based on the detection means detecting energization of any of the heating parts and detecting power outage of all the heating parts. A system range hood fan comprising a ventilation operation control means for starting and stopping the operation and changing the exhaust air volume during the ventilation operation according to the number of heating parts in the energized state detected by the detection means. 2. The ventilation operation control means according to claim 1, characterized in that the ventilation operation of the range hood fan is stopped after a delay operation of a predetermined time from the time when the detection means detects the power outage of all the heating parts. System range hood fan. 3. The system range hood fan according to claim 1 or 2, wherein the range hood fan can also be operated by manual operation, and a group of operation switches for this purpose are arranged on the electric heating cooker.