JP2500182B2 - Range hood - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood, and more specifically, a lifting hood is provided in an opening on the lower surface of the hood body, and the lifting hood can be lowered and raised between the hood body and the range. Therefore, the present invention relates to a range hood that improves the collection effect of oil smoke emitted from a range without sacrificing the workability of cooking.

[0002]

2. Description of the Related Art Conventionally, a range hood is installed at a relatively high position above the range, and oil smoke rising from the range is sucked and exhausted from an opening on the lower surface of the hood body. If you only want to collect the oil smoke from the range hood, it is better to install it in the lower position on the range so that the opening on the bottom of the hood body that serves as the suction port is as close as possible to the range, but it is too low. If it is installed on the cooking stove, the cooking stove will be located directly above the cooking stove, which will interfere with cooking. Therefore,
Conventional range hoods are often installed at a height of about 800 to 850 mm from the top surface of the range table even if the collection effect is slightly reduced.

[0003]

In order to achieve both the collection effect of the range hood and the workability of cooking, the applicant of the present application slidably fits a tubular hood into the opening on the lower surface of the hood body, and this lifting hood We have developed a range hood that raises and lowers by a drive mechanism that uses an electric motor. This range hood enhances the effect of collecting oil and smoke coming out of the stove by lowering the lift hood fitted to the opening of the hood body close to the stove, and when not cooking, the lift hood to the hood body It is raised and stored so that it does not get in the way. However, the above-mentioned range hood, when the elevating hood is lowered to be used in order to enhance the collection effect of oil smoke, and used, it becomes difficult to see the state of cooking performed on the range due to the descending elevating hood, and There was a problem that the workability of cooking became poor because it was not possible to secure a sufficient space necessary for cooking with the range.

The object of the present invention is to provide the above range hood with a function of automatically raising and lowering the lifting hood according to the working condition of cooking, thereby making it possible to collect the oil smoke of the range hood. It is to improve without sacrificing sex.

[0005]

In order to solve the above-mentioned problems, the range hood of the present invention comprises a substantially box-shaped hood body having an opening on the lower surface, and an elevating hood for extending the hood body downward. While being slidably fitted, the elevating hood is supported by a drive mechanism so as to be able to descend and rise between the hood body and a low position near the range, and the drive of the drive mechanism and the drive of the exhaust fan are controlled. The control unit is electrically connected to the control unit, and a human sensor for detecting a cook standing in front of the range and a signal for controlling the control unit to lower and raise the lifting hood and turn the exhaust fan on and off are provided. The control section is electrically connected to the input section for input.
When the exhaust fan is in the OFF state, the elevating hood is raised to the hood body, and when the exhaust fan is in the ON state and the human sensor is detecting the cooker, the elevating hood is lowered or raised to the intermediate lowering position, Moreover, the exhaust fan is ON.
It is provided with a lifting control means for lowering the lifting hood to a low descent position when the human sensor is not detecting the cooker in the state. Further, a storage unit is provided in the control unit, and information on the intermediate lowering position and the lower position of the lifting hood is stored by inputting and setting the storage unit to the input unit,
Based on this information, the lifting hood may be lowered to the intermediate lowering position or the lowering position.

[0006]

According to the above means, an elevating hood extending from the hood main body is slidably fitted in the lower opening of the hood main body so that the hood main body and a low descent position near the range are driven by the drive mechanism. It descends and rises between. The drive of the drive mechanism described above is controlled by the controller. The control unit controls the drive of the drive mechanism and the drive of the exhaust fan, and is in communication with a human sensor for detecting a cook standing in front of the range and an input unit. The input unit inputs a signal for turning the elevator hood down / up and an exhaust fan ON / OFF to the control unit, and the control unit controls the drive of the drive mechanism by an input operation from the input unit. As a result, the elevating hood descends and rises and stops at a predetermined position.

The above-mentioned control section is provided with a lifting control means. The elevating control means, when the exhaust fan is in the OFF state,
The lifting hood is raised to the hood body, that is, the rising end, and the lifting hood is stored. Further, when the exhaust fan is in the ON state and the human sensor is in the sensing state, the elevating control means determines that the cook is standing in front of the stove and cooking, and moves the elevating hood to a predetermined intermediate lowering position. Down to. In this state, a space required for cooking without a hindrance is secured between the lower surface of the lifting hood and the range, and at the same time, the effect of collecting oil smoke from the suction port on the lower surface of the lifting hood is somewhat improved. Further, when the exhaust fan is in the ON state and the human sensor is in the non-sensing state, the lift control means
Assuming that the cook has left the front of the range while cooking on the range, the lifting hood is lowered to a predetermined low descent position. In this state, the suction port on the lower surface of the lifting hood descends close to the stove, and the oil smoke coming out of the food on the stove is sucked and effectively exhausted before spreading.

Further, when the control section is provided with a storage section as in the range hood of claim 2, the intermediate descending position and the low descending position inputted from the input section are stored in the storage section, and the control section performs the descending operation. The lifting hood is lowered and stopped based on the position.

[0009]

EFFECT OF THE INVENTION Since the present invention is constructed as described above, it is possible to avoid the situation where the range hood is not used.
Accommodates the lifting hood in response to each usage situation where the cook is standing in front of the stove while operating the exhaust fan, and when the cook has left the stove while operating the exhaust fan It is possible to automatically move to the position, the intermediate descending position when performing cooking work, and the low descending position where the effect of collecting oil smoke is high. Therefore, according to the range hood of the present invention, it is possible to effectively improve the repair efficiency of the oil smoke rising from the range while maintaining good workability during cooking. Further, in the case where the control section is provided with a storage section for storing the lowered position of the lifting hood,
Depending on the input setting from the input section, the intermediate lowering position of the lifting hood,
The low descent position can be adjusted to the optimum position by the cook according to the actual installation situation and the height of the cook.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The range hood a shown in FIGS. 1 to 3 is installed above the wall surface c of the cooking chamber in which the range table b is installed, and the hood body 1 is installed with the back surface abutting against the wall surface C. The hood body 1 is provided with an exhaust fan unit 3 and an elevating hood 2 which is vertically slidably fitted in an opening on the lower surface of the hood body 1.

The hood main body 1 is formed into a box shape in which a partition plate 1a is provided above the inside of a cylindrical steel plate having an opening on the lower surface, and the lower surface is opened. The rear plate 1b is attached to the wall surface c by wood screws, anchor bolts or the like. It is installed along the wall surface c by being fixed. The exhaust fan unit 3 is configured by providing a propeller fan 3a that is rotated by a drive motor 3c inside a cylindrical cover 3b that extends downward from a lower surface of the partition plate 1a in the hood main body 1. The exhaust gas of the range b sucked from the suction port 3d at the lower end of the cover 3 in accordance with the rotation of 1 is discharged to the outside of the room through the exhaust duct 4 connected to the upper end port 3e of the cover 3. A sirocco type Yuan unit may be used as the exhaust fan unit 3 described above.

An elevating hood 2 is vertically slidably fitted in the opening 1b of the hood body 1 described above. Lifting hood 2
Is formed by bending a steel plate into a U-shaped cross-section so that the back surface is opened, and a slide portion 2a fitted inside the opening 1b of the hood body 1 and an expansion formed at the lower end of the slide portion 2a. It is composed of a part 2b. The expanding portion 2b has a suction port 2 that expands downward by causing the front surface of the lower end of the slide portion 2a and the left and right side surfaces to project in an inclined manner.
c is configured. Therefore, the lifting hood 2 has a shape similar to that of a so-called boot hood. On the other hand, the entire height of the slide portion 2a of the lifting hood 2 is formed to be slightly lower than the height from the lower end opening of the hood body 1 to the partition plate 1a. Therefore, when all of the slide portions 2a are fitted inside the hood body 2, the expanding portion 2b causes the opening portion 1 at the lower end of the hood body 1 to open.
It will be in the stored state of hitting under b. In this stored state, the hood body 1 and the lifting hood 2 form a normal boot-type hood. Also, the lifting hood 2 slide portion 2a
A groove 5 extending in the vertical direction is formed on the side surface of the hood, and a guide piece 6 having both ends bent into an L shape is attached and fixed to the upper part of the groove 5, and both inner sides of the hood body 1 are fixed. A guide rail 7 having a substantially C-shaped cross section is attached to the surface. Then, when the slide portion 2a is fitted into the opening 1b of the main body hood 1 as described above, the guide piece 6 of the lifting hood 2 is slidably fitted into the inner groove of the guide rail 7. The lifting hood 2 is configured to be slidable up and down along the hood body 1.

Pulleys 8 that rotate forward and backward by a drive motor 9 are provided on both left and right sides of the partition plate 1a of the hood body 1, and wires 10 wound around these pulleys 8 are provided on the partition plate 1a. From the opening 11 to the hood body 1
The wire 10 is hung inside, and the lower end of the wire 10 is fixed to the ear pieces 12 provided on the upper edges of the left and right side surfaces of the lifting hood 2. Both drive motors 9 that rotate and drive the pulley 8 are configured by using, for example, pulse motors, and both motors 9 are driven and rotated in a synchronized state. According to this, the both pulleys 8 are rotationally driven to wind or unwind the wire 10, so that the lifting hood 2 is located between the storage position T1 at the rising end and the low descent position T3 close to the range b. To descend and rise. As shown in FIG. 3, the lifting hood 2
Remains in a state where substantially all of the slide portion 2a is housed in the hood body 1 at the rising end position T1. Further, the lifting hood 2 that has descended to the low descent position T3 is designed to stop at a height of about 200 mm from the upper surface of the range stand a as shown by the phantom line in FIG. Although the lifting hood 2 described above is fitted inside the hood body 1, the lifting hood 2 can also be configured to move up and down while being fitted outside the hood body 1.

An operation panel 20 is provided on the front surface of the expanding portion 2b below the lifting hood 2. The operation panel 20 includes a control unit 3 for individually controlling the drive motor 3c of the exhaust fan unit 3 and the drive motor 9 of both pulleys 8 described above.
0, switches s1, s2, s3 for driving their drive motors 3c, 8 and a human sensor 40 for detecting a cook standing in front of the range b. (Fig. 6).
The control unit 30 is composed of a microcomputer,
It is stored inside the operation panel 20. Further, on the front surface of the operation panel 20, a switch s1 for performing automatic operation, strength, and OFF operation of the exhaust fan 3, and switches s2, s3 for adjusting the height of the intermediate lowering position T2 and the lowering position T3 of the lifting hood 2 are provided. Are provided, and these switches s1 and s
2, s3 are electrically connected to the control unit 30 described above.

A control unit 30 built in the operation panel 20.
A wiring 21 is drawn out from. The wiring 21 electrically connects the control unit 30, the drive motor 3c, and the drive motor 9 to each other, and is provided with a curl portion at an intermediate portion so as to be expandable and contractible and provided along the inner surface of the elevating hood 2. The drive motor 3c of the exhaust fan unit 3 and the drive motor 9 of the lifting hood 2 are connected to each other through the inside of the wiring cover 15. As described above, by providing the curl portion in the middle portion of the wiring 21, the wiring 21 can be expanded and contracted in response to the rise and fall of the lifting hood 2.

The human sensor 40 provided on the front surface of the operation panel 20 is constructed by using a photoelectric sensor or the like, and is attached to a position where the cook stands just before the range b. The human sensor 40 electrically communicates with the control unit 30 like the switches s1, s2, and s3, and constantly informs the control unit 30 about the presence or absence of the cook in front of the range b. It is outputting.

On the other hand, the control unit 30 has an elevating and lowering control means 31 for controlling the elevating and lowering of the elevating and lowering hood 2 in accordance with the usage condition of the range hood, and T which is set by the switches s2 and s3.
The storage unit 32 stores the data of T2 and T3. The elevating control means 31 includes a drive motor 3 for the exhaust fan 3.
When c is in the OFF state, the drive motor 9 including the pulse motor is rotated to the position where the lifting hood 2 corresponds to the rising end T1 and the state is maintained. As a result, the pulley 8 rotates in the winding direction by a predetermined amount, the wire 10 is wound by the pulleys 8, and the lifting hood 2 moves from the upper surface of the range b to 8
It rises to the storage position T1 having a height of about 100 to 1000 mm and stops. In addition, the lifting control means 31 controls the exhaust fan 3
When the drive motor 3c is in the ON state and the human sensor 40 is in the sensing state, it is determined that the cook is standing in front of the range b and cooking is performed, and the elevating hood 2 is lowered to a predetermined intermediate position. Lower to position T2. In this state, a space with a height of about 500 mm is ensured between the lower surface of the elevating hood 2 and the upper surface of the range b, which is necessary for cooking without trouble. Furthermore, when the drive motor 3c of the exhaust fan 3 is in the ON state and the human sensor 40 is in the non-sensing state, the elevating control means 31 allows the cook to continue cooking from the front of the range b while cooking is being performed on the range b. When it is determined that the player has left, the elevating hood 2 is lowered from the upper surface of the range b to a low descent position T3 having a height of about 200 mm.

The control section 30 comprises a storage section 32, as well as a lifting control means 31 which functions as described above. The storage unit 32 stores data of the intermediate lowering position T2 and the lowering lowering position T3 of the lifting hood 2 which are input and set from the switches s2 and s3 on the front surface of the operation panel 20, and the control unit 30.
Lowers the lifting hood 2 to the set lowering positions T2, T3 based on the data of T2, T3 stored in the storage unit 32. An average value is initially set in the storage unit 32. However, when the cooker newly inputs and sets a desired value from the switches s2 and s3, the lowering position T is set.
2, T3 can be adjusted to the height desired by the cook. The height values of the descending positions T2 and T3 input from the switches s2 and s3 and the details of the strength operation of the exhaust fan 3 performed by the switch s1 are displayed on the display unit 23 provided on the operation panel 20. It

According to the range hood a constructed as described above, in the situation where the range hood a is not used, the elevating hood 2 is raised to the ascending end T1 and maintained in the housed state. Further, when the exhaust fan 3 of the range hood a is turned on to exhaust the oil smoke emitted from the range b, and the cook is standing in front of the range b and cooking, cooking is performed on the range b. The lifting hood 2 automatically descends to the intermediate lowering position T2 in order to secure a space that can be carried out without trouble. As a result, a space with a height of about 500 mm where a pan or frying pan can be placed on the range for cooking is secured, and at the same time, the suction port on the lower surface of the elevating hood 2 approaches the range b, and oil smoke is captured. Collective effect is also improved. Furthermore, if the cook leaves the range b while using the range hood a,
Since it is not necessary to secure a space required for cooking work between the range b and the suction port 2c of the lifting hood 2, the lifting hood 2 is lowered to the low descent position T3. In this state, the suction port on the lower surface of the lifting hood 2 is located near the range b 2
It descends to around 00 mm, and the oil smoke coming out of the cooking on the range b is sucked and diffused effectively before it diffuses.
The lifting hood 2 described above has a strong, weak, and
It can also be driven up and down in conjunction with the operation of the FF.
Further, it is possible to contribute to the prevention of oil fires by linking the elevating hood 2 with a flame sensor provided in the range b, a temperature / gas sensor, or the like, and lowering the tempura oil when it fires.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a range hood embodying the present invention.

FIG. 2 is a vertical sectional side view of the range hood.

FIG. 3 is a side view showing an installed state of the range hood.

FIG. 4 is an enlarged cross-sectional view showing a rail and a rail guide.

5 is a cross-sectional view taken along line VV in FIG.

FIG. 6 is a block diagram showing a control unit.

[Explanation of symbols]

 a ... range hood b ... range s1, s2, s3 ... switch 1 ... hood body 2 ... lifting hood 3 ... exhaust fan unit 9 ... drive motor 20 ... operation Panel 30 ... Control unit 31 ... Elevating control unit 32 ... Storage unit 40 ... Human sensor

Claims (2)

(57) [Claims] 1. An elevation hood extending downward from the hood body, which is substantially box-shaped and whose bottom surface is open, is slidably fitted in the hood body, and the elevation hood is combined with the hood body by a drive mechanism. Is supported so as to be able to move down and up between the low position and the low position close to, and the control unit that controls the drive of the drive mechanism and the drive of the exhaust fan is electrically connected and the range of the drive unit is connected to the control unit. A human sensor for detecting a cook standing in front and an input section for inputting a signal for lowering and raising the lifting hood and turning ON / OFF the exhaust fan to the control section are electrically connected to each other. When the exhaust fan is in the OFF state, the lifting hood is raised to the hood body, and when the exhaust fan is in the ON state and the motion sensor detects the cooker, the lifting hood is lowered to the intermediate lowering position, and Further, the range hood is provided with an ascending / descending control means for descending the ascending / descending hood to a low descending position when the exhaust fan is in the ON state and the human sensor does not sense the cooker. 2. The control unit is provided with a storage unit, and information on the intermediate lowering position and lower position of the lifting hood which is input and set from the input unit is stored in the storage unit, and the lifting hood is moved to the intermediate lowering position based on this information. Alternatively, the range hood according to claim 1, which is configured to be lowered to a low descent position.