JPH0120602Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a ventilation device comprising a hood front plate rotatably mounted on a front opening of a hood body.

[Technical background of the invention and its problems]

Conventionally, in a ventilation device called a range hood fan, a blower, such as a ventilation fan, is installed in a hood body with openings on the front and bottom sides, and the front plate of the hood is moved up and down to open and close it through the front opening of the hood body. Further, a filter is disposed in the lower opening of the hood body, and a so-called push-off type switch that turns off when the operator is pressed is disposed near the lower opening. death,
Therefore, when the hood front plate is closed, the hood front plate presses the switch operator to turn off the switch, thereby cutting off the energization path of the ventilation fan motor, and when the hood front plate is opened, the hood front plate There is a configuration in which the energizing path for the motor is formed by releasing the pressure on the switch operator and turning on the switch. Since the gas is located near the opening on the bottom of the hood body, which is in the exhaust air circulation path, a large amount of oil dust, etc. may adhere to the switch, causing malfunctions such as malfunction or poor insulation. In addition, when cleaning the filter, the switch gets in the way when removing and installing the filter from the opening on the bottom of the hood body, and there is a problem that fingers, the filter, or other objects may accidentally come into contact with the switch, causing damage. be. In order to eliminate such defects,
Although it is conceivable to cover the switch with a cover, in this case, the cover needs to have a highly airtight and robust structure, which creates a new problem of increased cost.

[Purpose of invention]

The present invention was developed in view of the above circumstances, and its purpose is to prevent oil dust etc. from adhering to the switch as much as possible, and to prevent the switch from getting in the way when cleaning filters, etc. To provide a ventilation device that does not require a cover with a high degree of sealing and a robust structure even when covering with a cover, and does not require a high cost.

[Summary of the idea]

In the present invention, the upper end of the hood front plate is pivotably mounted on the front opening of the hood main body in order to open and close the front opening, and the front support plate is mounted so that the front end thereof is oriented diagonally downward to the rear. A rear support plate is provided at the lower part of the back plate of the hood main body so that the front plate is continuous with the front plate, and the front end is oriented diagonally upward forward, and a rear support plate is provided at the bottom of the back plate of the hood body, and between the front and rear support plates. A filter is provided on the front support plate, and a switch is provided on the front support plate and is interposed in the energizing path of the motor in the blower of the hood body and is turned on and off in conjunction with opening and closing of the front plate of the hood. It is designed to exclude the switch from the circulation path of exhaust gas containing oil smoke, etc.

[Example of idea]

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 designates a hood body in the shape of a rectangular box, the lower surface of which is open, and the front surface that is open except for the upper front plate 2. Three auxiliary intake ports 3 are formed on the front plate 2. Further, substantially U-shaped support pieces 4, 4 are fixed to both left and right end portions of the front plate 2. Reference numeral 5 denotes a ventilation fan which is a blower attached to the upper part of the back plate 6 of the hood main body 1 so as to protrude rearward, and this is composed of an outer frame 7, a motor 8, a fan 9, a bell mouth 10, a shutter 11, etc. . Reference numeral 12 denotes a front support plate provided continuously on the front plate 2 of the hood body 1, and its tip is oriented diagonally downward to the rear inside the hood body 1. A holding member 13 made of a leaf spring is attached. Reference numeral 14 denotes a rear support plate attached to the lower part of the back plate 6 of the hood main body 1, the tip of which is oriented diagonally upward and forward inside the hood main body 1, and the tip is provided with a holding plate. A member 15 is attached. And 16
is a filter, the front end of which is connected to the presser member 13.
It is detachably bridged between the front and rear support plates 12 and 14, with the rear end being inserted and held by the holding member 15. Reference numeral 17 designates a rectangular hood front plate, on the upper end of which is formed an upper plate portion 18 that points rearward, and on both left and right ends of the back side plate portions 19 that point rearward protrude. It is set up. Further, at both left and right ends of the upper plate portion 18 of the hood front plate 17, substantially arc-shaped support pieces 20, 20 are formed in a curved manner, and these support pieces 4 of the hood body 1 are bent. , 4 so as to be rotatably and detachably supported. Reference numeral 21 designates an engaged member as an engaged portion, the upper half of which is fixed to the upper back surface of the hood front plate 17;
The lower half portion is bent so as to be oriented diagonally backward and downward, and its lower end is an engaged protrusion portion 21a. Reference numeral 23 denotes a plastic cover disposed on the front support plate 12, which will be described below. That is, 24 is the front support plate 1
2, which has a triangular box shape with an open slanted back surface, and a flange 24a that protrudes outward from the periphery of the back opening. It is formed. Reference numeral 25 designates an upper cover portion disposed above the front support plate 12, which has a rectangular box shape with an open front surface, and a flange portion 25a that protrudes outward is formed at the peripheral edge of the front surface opening. At the same time, an opening 25b is formed in the lower surface plate. Reference numeral 26 denotes a switch mounting plate, which is disposed inside the lower cover part 24 and has screws 2 attached to the lower plate of the lower cover part 24.
7, and a switch 28 is fitted and attached to the front part.
The operator 28a passes through the front plate of the lower cover portion 24 and projects forward. In this case, this switch 28 is always on, and the operator 28a
It is a push-off type that turns off when pressed. Reference numeral 29 denotes an outlet serving as a connection part, which is located inside the upper cover part 25 and is connected to the opening 25.
It is arranged in part b. The lower cover part 24 and the upper cover part 25 are arranged opposite to each other with an opening 12a formed in the front support plate 12 in between, and the flanges 24a and 25a are supported on the front side by a plurality of screws 30. It is attached to the tip of the plate 12 by co-tightening. Reference numeral 31 denotes a power cord wire having a plug 31a connected to a power outlet (not shown) at one end, and the other end passes through a bush 32 attached to the back plate of the upper cover part 25. One power wire 31b of the power cord wire 31 is connected to one terminal 28b of the switch 28, and the other power wire 31c is connected to one female terminal ( ) and the other terminal 2 of the switch 28
8c is connected to the other female terminal (not shown) of the outlet 29 via a lead wire 33. 3
4 is a power cord wire whose one end is connected to the motor 8 of the ventilation fan 5, and which has a plug 3 at the other end.
4a, and this plug 34a is inserted and connected to the outlet 29. Therefore, the switch 28 is interposed in the energizing path of the motor 8 formed by the power cords 31 and 34. 3
Reference numeral 5 denotes a support member fixed to the lower cover part 24, the upper end of which protrudes forward from the front opening of the hood main body 1 and protrudes upward so as to be located near the front plate 2. It's getting old.
Reference numeral 36 denotes a lever whose upper end is rotatably mounted on the upper end of the support member 35 by a pin 35a, and the operator 2 of the switch 28 is located in the middle of the lever.
A pressing protrusion 36a corresponding to 8a is bent, and an intermediate portion of an engaging member 37, which is an engaging portion corresponding to the engaged member 21, is rotatably pivoted at the lower end by a pin 38. The front end of the engaging member 37 is bent into an arc to form a hook portion 37a whose tip is directed upward. A tension coil spring 39 is stretched between the rear end portion of the engagement member 37 and the front cover portion 24, and the spring force of the tension coil spring 39 causes the lever 36 to be not always engaged. The pressing protrusion 36a is urged to rotate rearward in the direction of arrow A through the mating member 37, so that the pressing protrusion 36a presses the operator 28a of the switch 28, and the engaging member 37 is always pressed against its hook. 37a is biased in the direction of arrow B so that it points upward. Reference numerals 40 and 40 designate well-known locking mechanisms having lock levers 41 and 41 that are movable in the front and rear directions, and these are fixed to the lower inner surfaces of both left and right side panels 42 and 42 of the hood main body 1, and the lock levers 41,4
The front end of 1 is removably attached to the lower inner surface of the side plates 19, 19 of the hood main body 17 by means of mounting screws 43 (only one is shown), and the front end of the hood 17 can be attached as described below. When opened, the hood front plate 17 is locked at a fixed opening angle position.

Next, the operation of this embodiment will be explained.

First, when attaching the hood front plate 17 to the front opening of the hood main body 1, the supporting pieces 20, 20 of the hood front plate 17 are fitted into the supporting pieces 4, 4 of the hood main body 1 from above to support them, Furthermore, the side plate part 1
The front end portions of the lock levers 41, 41 of the lock mechanisms 40, 40 are screwed to 9, 19. Thereafter, when the hood front plate 17 is rotated in the direction of arrow C, which is the closing direction, the engaged projecting piece 21a of the engaged member 21 engages the arc-shaped hook portion 3 of the engaging member 37.
7a, and as a result, the engaging member 37 is rotated in a direction opposite to the direction of arrow B against the spring force of the tension coil spring 39, and the engaged protrusion 37 is rotated in the direction opposite to the direction of arrow B. When the portion 21a passes over the tip of the hook portion 37a, the engaging member 37 is rotated again in the direction of arrow B by the spring force of the tension coil spring 39, so that the hook portion 37a engages with the engaged projection portion 21a. (See Figure 1). When the front opening of the hood main body 1 is closed by the hood front plate 17 shown in FIG. The pressing protrusion 36a presses the operator 28a of the switch 28, so that the switch 28 is turned off and the energizing path of the motor 8 of the ventilation fan 5 is cut off.

When the hood front plate 17 is rotated in the opening direction opposite to the direction of arrow C from the state shown in FIG. Since the hook portion 37a of the engagement member 37 is pulled forward, the lever 36 is rotated in the direction opposite to the direction of arrow A through the engagement member 37 against the spring force of the tension coil spring 39. The pressing protrusion 36a releases the pressure on the operator 28a of the switch 28 (see FIG. 2). As a result, the switch 28 is turned on to form an energizing path for the motor 8 of the ventilation fan 5.
The fan 9 rotates and directs indoor air to the hood body 1.
The air is sucked into the interior through the bottom opening of the hood body 1, and the sucked air is discharged outdoors through the filter 16 and the outer frame 7, so that the exhaust gas containing oil smoke, etc. inside the hood body 1 is sucked into the bottom opening of the hood body 1. Distribution path passing through the filter 16 and ventilation fan 5 (indicated by arrow D in FIG. 2)
A ventilation operation is carried out in which the air is discharged outdoors through the air. Incidentally, when the hood front plate 17 is rotated to a certain opening angle in the direction opposite to the direction of arrow C, the hood front plate 17 is locked at the certain opening angle position by the locking mechanisms 40, 40. As a result, the opening on the lower surface of the hood main body 1, which is the main intake port, becomes larger by the amount that the hood front plate 17 is opened. still,
When stopping the ventilation operation, remove the hood front plate 17.
Once a rotational force is applied in the closing direction (direction of arrow C) and then a rotational force is applied again in the opening direction (direction opposite to arrow C), the locking of the hood front plate 17 by the locking mechanisms 40, 40 is released. Therefore, if the hood front plate 17 is rotated again in the closing direction, the closed state shown in FIG. 1 will be returned to.
The switch 28 is turned off and the energization path of the motor 8 of the ventilation fan 5 is cut off.

On the other hand, when removing the hood front plate 17 from the front opening of the hood body 1 in order to clean the inside of the hood body 1, the side plate portions 19 of the hood front plate 17,
The lock levers 41, 41 of the lock mechanisms 40, 40 are separated by removing the mounting screw 43 from the lock mechanism 19, and then the hood front plate 17 is moved upward to allow the support pieces 20, 20 to escape from the support pieces 4, 4. . In this case, when the hood front plate 17 is moved upward, the engaged member 21 also moves upward, so that the engaged protrusion 21a slips out from the hook portion 37a of the engaging member 37. These engagements are now automatically disengaged, thus
The lever 36 is biased in the direction of arrow A by the spring force of the tension coil spring 39 via the engagement member 37.
The pressing protrusion 36a is the operator 28a of the switch 28.
, and the switch 28 is automatically turned off.

According to this embodiment, the following effects can be obtained. That is, since the switch 28 is disposed in the front support plate 12 above the filter 16 in the upper part of the hood body 1, the switch 28 is excluded from the distribution path D of the exhaust gas from the ventilation fan 5 in the hood body 1. Therefore, the switch 28 is not constantly exposed to exhaust gas containing oil smoke, etc., so even if the temporary cover 23 is not provided, it is necessary to prevent oil dust etc. from adhering to the switch 28 as much as possible. It is possible to prevent the switch 28 from malfunctioning due to oil dust, etc., malfunctions such as poor insulation, and as mentioned above, the switch 28 is located above the front end of the filter 16. Therefore, when cleaning the filter 16, the switch 28 does not get in the way when removing and attaching the filter 16 to the front support plate 12 and the rear support plate 14, and therefore, there is no temporary cover 23. Even if that filter 16
When removing or installing the switch 28, the filter 16 etc. will not come into contact with the switch 28 and cause damage. By the way, when cooking indoors, oil smoke etc. may temporarily exceed the exhaust capacity of the ventilation fan 5, but in this case, conventionally, the excess oil smoke etc. is removed from the outside of the hood front plate 17. As shown by the arrow E in FIG. 2, the ejection becomes difficult, but in this embodiment, the front plate 2 of the hood main body 1, the front support plate 12, and the hood front plate 1
Since a relatively large space F is formed between 7 and 7, even excess oil smoke, etc. that would normally rise as shown by arrow E, will be temporarily captured and stagnate in the space F. Then, the oil smoke, etc. captured and accumulated in this space F is then discharged outdoors by the ventilation fan 5 through the filter 16 in a short time, and therefore, the effect of trapping oil smoke, etc. is high. . Furthermore, if excess oil smoke or the like is captured in such a space F, for example, if the cover 23 is not present, this oil smoke or the like may cause the switch 28 to
In this case, this space F
Since the accumulation of oil smoke, etc. in the switch 28 is temporary, the adhesion of oil dust, etc. to the switch 28 is extremely slight. In particular, in this embodiment, the switch 28 is covered with the cover 23. Therefore, there is almost no adhesion of oil dust or the like to the switch 28. And like this, switch 28
Even if the cover 23 is provided to cover the switch 28 and the cover 23, as mentioned above, the oil smoke etc. that stays in the space F is temporary and the adhesion of oil dust etc. to the cover 23 is slight and that the switch 28 and the cover 23 are The filter 1 is located above the front end of the filter 16.
Since the filter 16 and the like do not come into contact with the cover 23 during the removal and installation of the filter 6, the cover 23 is not required to have a highly sealed and robust structure, and therefore costs are high. Never. On the other hand, in this example,
A space F between the hood body 1 and the hood front plate 17
is formed to capture oil smoke, etc. exceeding the exhaust capacity of the ventilation fan 5 in this space F, but furthermore, there may be cases where oil smoke, etc., exceeds the capture capacity of this space F indoors. In this case, oil smoke etc. may rise to the upper part of the room as shown by arrow E. However, in this embodiment, an auxiliary intake port 3 is formed on the front plate 2 of the hood body 1. Therefore, as shown by arrow E, oil smoke etc. rising to the upper part of the room can also be removed from the auxiliary intake port 3 to the hood main body 1.
After being sucked into the upper part of the interior, it is discharged outdoors by the ventilation fan 5, which greatly improves the effectiveness of exhausting oil smoke and the like. Since an air flow (indicated by arrow G in FIG. 2) is formed from the auxiliary intake port 3 toward the ventilation fan 5, the air that tends to stay in the upper part of the hood body 1 away from the exhaust gas distribution path D is also generated. Along with this air flow G, it is discharged outdoors, and therefore, oil smoke, etc. that remain in the upper part of the hood body 1 without being completely captured by the filter 16 are also promptly discharged outdoors. become. In this case, oil dust, etc. may adhere to the upper cover part 25 due to oil smoke, etc. contained in the air flow G due to the formation of the air flow G, but since the oil smoke, etc. contained in the air flow G is extremely small, the upper cover part 25, and even if oil dust or the like adheres to the upper cover portion 25, in this embodiment, the opening 25b for the outlet 29
is formed on the bottom plate of the upper cover portion 25, so that oil dust and the like will not enter into the cover 23 through this opening 25b.

Furthermore, the front support plate 1 is tilted so that the cover 23 and therefore the switch 28 are oriented diagonally downward to the rear.
2, the switch 28 can be located as close to the inside of the hood body 1 as possible. Therefore, for example, if the switch 28 is attached to the outer surface of the front panel 2, the hood can be removed to escape the switch 28. While it is necessary to increase the front and rear depth dimensions of the front plate 17, this embodiment does not require such a need, and the hood front plate 17 can be made thinner.

Furthermore, according to this embodiment, the following effects can be obtained. That is, the operator 2 of the switch 28
Lever 3 having a pressing protrusion 36a that presses 8a
An engaging member 37 is pivotally provided at
1, the lever 36 can be linked to the hood front plate 17, and the pressing protrusion of the lever 36 can be moved in response to the closing and opening operations of the hood front plate 17. 36a presses and releases the pressure from the operator 28a of the switch 28, and the hood front plate 1
7 is removed from the front opening of the hood body 1, the engagement between the engaged protrusion 21a and the hook portion 37a is automatically released, and the pressing protrusion 36 of the lever 36 is released.
Since the switch 28 is turned off by pressing the operator 28a of the switch 28, when the hood front plate 17 is removed to clean the inside of the hood body 1, the plug 31a of the power cord line 31 is connected to a power outlet (not shown). There is no need to pull out the switch from the switch 28, which improves cleaning work efficiency, and there is no need to provide an additional manually operated switch in addition to the switch 28, so the cost does not increase significantly. Furthermore, when removing the hood front plate 17 from the front opening of the hood body 1, it is only necessary to remove the mounting screws 43 from the side plate parts 19, 19 of the hood front plate 17 and then move the hood front plate 17 upward. Therefore, the removal work is easy, and when the hood front plate 17 is to be attached to the front opening of the hood main body 1, the operation described above is reversed, so the attachment work is also easy. Furthermore, when the hood front plate 17 is removed from the front opening of the hood body 1, the operator 28a of the switch 28 is moved to the lever 3.
Since the operator 28a is pressed and covered by the pressing protrusion 36a of No. 6, the operator 28a does not protrude greatly toward the front opening of the hood body 1. This prevents damage to the switch 28 due to a human body, object, etc. accidentally colliding with the operator 28a of the switch 28 during cleaning.

In the above embodiment, the switch 28 is turned on and off by the lever 36, but instead, the switch 28 may be turned on and off directly by the engaged member 21.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be implemented with appropriate modifications within the scope of the gist, for example, a Shirotskov fan may be used as the blower. Of course.

[Effect of idea]

As explained above, in the ventilation system of the present invention, the upper end of the hood front plate is pivotably mounted above the front opening of the hood main body, and the filter bridge is installed on the front plate above the front opening. A front support plate of the hood is continuously provided so that the front end thereof is oriented diagonally rearward and downward, and the front support plate is interposed in the energizing path of the blower motor and turned on in conjunction with the opening and closing of the hood front plate. Since a switch that is turned off is provided, the switch can be excluded from the circulation path of exhaust gas containing oil smoke, etc., and therefore, it is possible to prevent oil dust, etc. from adhering to the switch as much as possible, and the filter The switch does not get in the way when cleaning the switch, etc., and as a result, even if the switch is covered with a cover, the cover does not need to have a highly sealed and robust structure, and the cost does not increase so much. , it is possible to enhance the capture effect of oil smoke, etc., and furthermore, the switch can be located as far inward as possible in the hood body, and the front panel of the hood can be made thinner. It is something to play.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are longitudinal sectional side views in different operating states, FIG. 3 is a perspective view with the front hood plate removed, and FIG. 4 is a view of the cover part. It is an enlarged vertical side view. In the drawing, 1 is the hood body, 2 is the front plate, 3 is the auxiliary intake port, 4 is the support piece, 5 is the ventilation fan (blower),
6 is a back plate, 8 is a motor, 12 is a front support plate, 1
4 is a rear support plate, 16 is a filter, 17 is a hood front plate, 20 is a support piece, 23 is a cover, 24 is a lower cover part, 25 is an upper cover part, 25b is an opening, 28 is a switch, and 28a is a Operator, 29 is an outlet (connection part), 34 is a power cord wire, 36
indicates a lever, and 40 indicates a lock mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A hood main body that is open at the bottom and open at the front leaving the upper front panel open and equipped with a blower, and the upper end of the hood main body is rotatable to open and close the front opening. a hood front plate pivotally mounted on the hood body; a front support plate provided continuously on the front plate of the hood main body and having a distal end oriented rearward and obliquely downward;
a rear support plate provided at the lower part of the back plate of the hood main body and whose tip is oriented diagonally forward and upward; a filter installed as a bridge between the tips of the front and rear support plates; and the front support plate. and a switch disposed in the air blower, interposed in the current conduction path of the motor of the blower, and turned on and off in conjunction with opening and closing of the front plate of the hood. 2. The switch is covered by a cover, and the cover has an opening on the lower side, and a connection part to which the power cord of the blower is connected is disposed in the opening. The ventilation device according to claim 1 of the utility model registration claim. 3. The ventilation device according to claim 1 or 2 of the utility model registration claim, characterized in that an auxiliary intake port is formed on the front plate of the hood body.