JPH02282641A - Range hood - Google Patents

Abstract

PURPOSE:To actuate a mechanism without taking trouble to make the function of a range hood appropriate to the occasion both at the time of using a fire and not using a fire by providing a drive device for moving the lower end of the front plate forward and backward in relation to the main body of the range hood and by providing also a temperature sensor which actuates the drive device. CONSTITUTION:When, for example, a gas range is used under the main body 1 of a hood, a temperature sensor 11 inside the main body 1 outputs a signal, which causes a fan 2 to start to work and also an electric motor 7 for driving the front plate to rotate positively; this rotative motion of the electric motor 7 is transmitted to a pinion 8 and a rack 9 so that by moving a lower part-supporting rail 5' toward the front the lower end of the front plate 3 is pushed toward the front. When the lower part- supporting rail 5' has been moved by a specified distance, a limit switch 12 stops the movement of the lowe part-supporting rail 5' by cutting off the power supply to the motor 7. When, for example, the use of a gas range is stopped, the signal from the temperature sensor 11 changes so that the fan 2 stops working and the electric motor 7 rotates in reverse so as to retract the front plate 3 as a whole into the main body 1 of the hood.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a range hood that is installed above a gas stove or other fire-using equipment in the kitchen, covers the top during cooking, and exhausts oil smoke, exhaust gas, steam, etc. be.

2. Description of the Related Art Conventionally, this type of range hood has generally had a structure as shown in FIG. That is, the hood body 101 has a built-in blower 102 for discharging oil smoke, waste gas, steam, etc., and has an open front and bottom surface, and a hood body 101 whose upper end rotates around the hood body 101 in order to open and close the front opening of the hood body 101. A support rail connected to a movably supported lever 104 to form a link mechanism, supported by a bearing 106 held by the hood body 101 at the lower end, and movable back and forth) v1
It consisted of a front plate 1o3 having an o6 and a blower operation switch (not shown).

In the above configuration, when using hot equipment such as a gas range, the range hood switch is turned on and the blower is operated, and the lower end of the front plate 102 is pulled forward to cover the upper part of the hot equipment to prevent oil smoke.

Collects exhaust gas, steam, etc. and exhausts it outdoors. When the hot equipment is not in use, the switch is turned off and the lower end of the front plate 102 is pushed rearward to be stored inside the hood body 101, thereby improving the aesthetic appearance of the kitchen.

Problems to be Solved by the Invention In such a conventional configuration, when using hot equipment, the user has to turn on the range hood and pull it out by holding the lower end of the front plate 102 with his/her hand. First, if the lower end remains housed in the hood main body 101, it will not be possible to cover the upper part of the hot equipment, and it will not be possible to sufficiently exhaust oil smoke, exhaust gas, steam, etc. In addition, regardless of whether or not hot equipment is used, the front plate 10
If 2 is left pulled out to the front, it will protrude into the kitchen space, creating a feeling of pressure and not aesthetically pleasing. Depending on whether or not hot equipment is used,
The lower end of the front plate 102 has to be pulled out from the hood body 101 and then stored, which requires a lot of effort to operate.

The present invention is intended to solve such problems, and a first object thereof is to operate the hot equipment so that it can perform its original function without any effort, both when it is in use and when it is not in use. The second purpose is to ensure that the above-mentioned operations can be performed safely for people who are in the kitchen for cooking or the like.

Means for Solving the Problems In order to achieve the first object, the first means of the present invention is to provide a hood main body having an open front and lower surface and a built-in blower, and a hood main body having an upper end above the front opening of the hood main body. A front plate is rotatably supported, and its lower end is connected to the lower end of the front plate and fixed within the hood main body, and the lower end thereof is connected to the lower end of the front plate and fixed within the hood main body. a front plate drive device that moves the lower end of the plate forward and backward relative to the hood body; and a front plate drive device provided in the hood body that detects the temperature inside the hood body and operates the blower when the temperature reaches a predetermined temperature. is driven so that the front plate appears outside the hood body, and when the temperature inside the hood body becomes less than a predetermined value, the blower is stopped and the drive unit is housed within the hood body. The range hood is configured to include a temperature detection section that is driven so that the temperature is increased.

The second means to achieve the second purpose is to include, within the hood body,
When the temperature inside the hood body reaches a predetermined temperature, a signal is sent to a human body detection sensor provided on the front plate, and then the blower is operated and the front plate driving device is driven so that the front plate appears outside the hood body. Further, when the temperature inside the hood body becomes less than a predetermined value, a temperature detection unit is provided that stops the blower and drives the drive device so that the front plate is housed in the hood body, and The range hood has a configuration in which a detection sensor receives a signal from the temperature detection section and is provided with a warning device that operates in response to a signal output when a human body is detected.

Effect: With the configuration of the first means, when a gas regenerator or the like located below the hood body is used, the temperature is detected by the temperature detection section, and when the temperature reaches a predetermined temperature, the blower is operated and the drive device is driven to open the front plate. Pull it out of the hood body to form a normal hood shape.

When the gas range is stopped, the temperature detection unit stops the blower and drives the drive device in the opposite direction to retract the front plate into the hood body, thereby determining whether or not the gas range is being used. In conjunction with this, the range hood will operate automatically.

With the configuration of the second means, when the temperature detection section detects the use of a gas range etc., it first sends a signal to the human body detection sensor, and upon receiving this signal, the human body detection sensor detects whether there is a person in front of the range hood. When the presence of a person is detected, a signal is sent to the warning device to generate a warning, and then the blower is automatically operated and the front panel is pulled out.

Embodiment First, an embodiment according to the first means of the present invention will be described based on FIG.

In the figure, the other end of an upper support lever 4 is rotatably supported by the hood body 1 with one end as a fulcrum in order to open and close the front opening of the hood body 1 which has a built-in blower 2 and is open on the front and lower surfaces. the upper end of which is movably connected to the
A front plate 3 is provided, the lower part of which is connected to the front end of a lower support rail 6,6' supported by a bearing 6 held by the hood body 1 so as to be movable forward and backward relative to the hood body 1. Inside the hood body 1, there is provided a front plate driving electric motor 7 having a pinion 8 at a position opposite to the lower support rail 6' on the negative side, and
is provided with a rack 9, and by engaging these binions 8 and rack 9 and rotating the front plate driving electric motor in forward and reverse directions,
The front plate 3 is moved forward or backward. Further, a limit switch 12 is provided inside the hood body 1 to turn off the power to the front plate driving electric motor 7 when the lower support rail 6' moves forward or backward by a predetermined distance. The lower support rail 6', bearing 6, electric motor for driving the front plate 7. Binion8. Rack 9. The limit switch 12 constitutes a driving device for the front plate 3. Further, inside the hood body 1, there is provided a temperature detection section 11 that detects the temperature inside the hood body 1 and, when the temperature reaches a predetermined temperature, causes the blower 2 to operate and the front plate driving electric motor 7 to rotate forward. Also, front plate 3
There is a switch 10 for adjusting the speed of the blower 2 on the lower front of the
is provided.

In the above configuration, when a gas range or the like below the hood body 1 is used, the temperature inside the hood body 1 rises due to the generated exhaust gas, etc., and a signal is output from the temperature detection section 11 inside the hood body 1. The blower 2 receives the signal from the temperature detection section 11 and starts operating, and the front plate driving electric motor 7 rotates in the forward direction, and its rotational movement is caused by the pinion 8. The lower support rail 6' is pushed forward through the rack 9, and the lower end of the front plate 3 is pushed forward. When the lower support rail 6' has moved a predetermined distance, the limit switch 12 turns off the power to the front plate drive motor 7 and stops the movement of the lower support rail 6'. Then, the lower support rail 5' is fixed at this position using a solenoid or the like (not shown).

On the other hand, when the gas range etc. is stopped, the temperature inside the hood body 1 decreases, the signal from the temperature detection section 11 changes, the blower 2 stops, and the fixation of the lower support rail 6' by the solenoid etc. is released. The front plate driving electric motor 7 is rotated in the opposite direction, and the pinion 8. The lower support rail 6' is retreated via the rack 9 until the entire front plate 3 is accommodated within the hood body 1.

As described above, according to this embodiment, the ventilation effect as a range hood or the improvement of the aesthetics of the kitchen can be achieved in conjunction with whether or not the gas range is used, both when the gas range is in use and when it is not in use. Since this can be achieved automatically, it can be used correctly without any trouble, and problems caused by erroneous or forgotten operations can be reliably prevented.

Next, an embodiment according to the second means of the present invention will be described based on FIGS. 2 and 3.

In this embodiment, a human body detection sensor 20 that detects the presence of a person in front of the range hood and generates a signal when receiving a signal from a temperature detection section 23, which will be described later, is installed at the bottom of the front plate 3, and this human body detection sensor A warning device including a buzzer 21 and an LED light emitting section 22 are provided to receive a signal from the warning device 20 and issue a warning. Also, inside the hood body 1, the human body detection sensor 2 detects the temperature of the hood body 1, and when the temperature reaches a predetermined temperature, the human body detection sensor 2 is installed.
o, then sends a signal to the blower 2 and front plate drive motor 7.
A temperature detection section 23 is provided to drive the temperature detection section 23.

In the above configuration, the gas range 2 below the hood body 1
4, the temperature inside the hood body 1 rises due to the generated exhaust gas, etc., and when the temperature reaches a predetermined temperature, the temperature detection part 2
3 sends a signal to the human body detection sensor 20. When the human body detection sensor 20 receives the signal and detects the presence of a person in front of the range hood during cooking, etc., it sends a signal to the buzzer 21 and the LED light emitting unit 22, which generates a warning sound and lights up. The people in the room are informed that the front panel 3 will be opened. Next, the temperature detection unit 23 drives the blower 2 and the front plate driving electric motor 7 similarly to the first embodiment. Further, when the gas range 24 is stopped, the same operation as in the first embodiment is performed.

As mentioned above, when the front plate 3 is pushed forward to exhaust gases etc. during cooking, it alerts the people in the kitchen, so they should not work in the kitchen holding cutlery or hot food. It is possible to prevent the front plate 3 from unexpectedly hitting a person who is in a dangerous situation.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, when a gas range or the like located below the hood body is used, the temperature is detected and the front plate is automatically pulled out from the hood body. The hood is shaped to effectively collect and exhaust exhaust gases, and when the gas range is stopped, the front plate automatically retracts into the hood body, eliminating the feeling of pressure in the kitchen. This prevents deterioration of the appearance, and in this way, whether the gas range or the like is used or not, normal usage conditions can be obtained easily and reliably.

However, when the above operation is performed, the person in the kitchen, which is a place where relatively dangerous items are handled, is warned of the operation. This has the effect of enabling automatic driving.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a range hood showing an embodiment of the first means of the present invention, FIG. 2 is an exploded perspective view of a range hood showing an embodiment of the second means, and FIG. FIG. 4 is a perspective sectional view of a conventional range hood. 1...Hood body, 3...Front plate, 6.
6'...Lower support rail, 7...--Front plate driving electric motor, 11...Temperature detection section, 20...
...Human body detection sensor 21...Buzzer, 22
...LED light emitting section, 23...Temperature detection section.

Claims (2)

[Claims] (1) A hood main body with an open front and bottom surface and a built-in blower, the upper end of which is rotatably supported above the front opening of the hood main body, and the lower end of which is formed to be able to move in and out of the hood main body. a front plate; a front plate driving device connected to a lower end of the front plate and fixed within the hood body for moving the lower end of the front plate forward and backward with respect to the hood body; When the temperature inside the hood main body is detected and the temperature reaches a predetermined temperature, the blower is operated and the drive device is driven so that the front plate appears outside the hood main body. A range hood comprising: a temperature detection unit that stops the blower and drives the drive device so that the front plate is housed in the hood body when the temperature becomes less than a predetermined value. (2) A hood main body with an open front and bottom surface and a built-in blower, the upper end of which is rotatably supported above the front opening of the hood main body, and the lower end of which is formed to be able to move in and out of the hood main body. a front plate; a front plate driving device connected to a lower end of the front plate and fixed within the hood body for moving the lower end of the front plate forward and backward with respect to the hood body; and when the temperature inside the hood body reaches a predetermined temperature, it sends a signal to a human body detection sensor provided on the front plate, and then operates the blower and drives the drive device so that the front plate appears outside the hood body. a temperature sensing unit that drives the hood so that the front plate is housed in the hood body, and when the temperature inside the hood body becomes less than a predetermined value, stops the blower and drives the drive device so that the front plate is housed in the hood body; A range hood comprising: a warning device that is operated by the human body detection sensor receiving a signal from the temperature detection section and a signal output when a human body is detected.