JP3436601B2 - Blower unit for range hood fan - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower unit for a range hood fan, and more particularly, to a double-sided suction type blower unit having intake openings on both right and left sides of a fan casing. Things. 2. Description of the Related Art Conventionally, this type of blower unit has a fan casing for accommodating a multi-blade fan, in which air inlets are opened on both left and right sides, and a fan motor is provided in one air inlet. A range hood fan is configured by being installed in a hood body formed in a box shape having an open bottom surface using a metal material such as stainless steel, and further having a filter detachably attached to the hood body. [0003] In the case of a conventional range hood fan having such a structure, a large work area is required when a filter is attached at an installation site, so that it is assembled in a factory or the like in advance. After installing the blower unit in the hood, ship in the completed state with the filter attached,
It will be carried into the installation site and will be installed. Therefore, the assembling is not only a large-scale operation in a factory, but also has a problem that a large number of workers are required for the installation work since the entire range hood fan becomes considerably heavy. In addition, since the filter is supported by the filter bar provided on the top plate and the partition plate of the hood, the frontage, depth, design (shape), etc., have variations depending on the efficiency of smoke exhaustion and customer requests. In making
Change of length of partition plate, change of length of filter bar,
There are many corrections and changes due to changes in the width of the filter, etc.
It becomes necessary to prepare and prepare a filter. Incidentally, if the blower unit is integrally provided with a filter, the above-mentioned problem can be solved. However, simply providing a filter cannot improve the efficiency of adsorbing fats and oils contained in flue gas, and needs to be improved in view of this point. Also, in this type of blower unit, the suction port on the opposite side facing the motor mounting portion is formed by a detachable bell mouth, and by removing this bell mouth, a fan attachment / detachment slightly larger than the fan is formed. Inspection and replacement of the fan, cleaning of the inside of the fan casing, and the like can be performed. However, the bell mouth is attached to the side surface of the fan casing by screwing into the fan casing with a number of screw members at a predetermined angle on the same circumference,
There is also a problem that the work after assembling (assembly) of the fan into the blower unit and the work of removing the bell mouth at the time of inspection and replacement of the fan become troublesome. SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances, and an object thereof is to provide a blower unit for a range hood provided with a filter, which has an improved absorption efficiency of oils and fats contained in flue gas. That is. Still another object of the present invention is to provide a blower unit for a range hood fan that can easily perform the pre-operation and post-operation such as inspection, replacement and repair of a fan and a motor, and cleaning of a fan casing. The technical means taken to achieve the above object is to provide either a main intake port or a sub intake port on both left and right sides of a fan casing accommodating a multi-blade fan. A motor mounting portion is attached to a part of the sub intake port so as to traverse the motor, and the motor mounting portion is equipped with a fan motor. A bell mouth forming the main intake port is provided integrally with the air guide cylinder on the side of the main intake port, which is surrounded by a converging air guide cylinder provided on the side surface, and the air guide cylinder is an air guide cylinder. And a hook claw provided on one of the side portions of the fan casing facing the air guide cylinder, a hooking hole provided on the other side, and hooking / unlocking the hooking hook, and the hooking hook and the hooking hole. Air guide tube in the hooked condition The gist is that it is detachably attached to the fan casing with a threaded portion to be pinched to the side surface of the casing. According to the above-mentioned technical means, the main and sub intake ports on the left and right side surfaces of the fan casing are each made to have a widened shape (flapper type).
And a filter is provided at the open end of the air guide cylinder, so that a large filter can be provided. Further, after the hook and the hook hole are engaged with each other, the air guide tube is attached to the fan casing simply by screwing and screwing one screw member, and the process is performed in reverse. Thus, the air guide cylinder can be removed.
In addition, since the filter is provided, it is possible to design the hood body with priority given to the efficiency of capturing smoke, and the packaging (range hood fan) and assembly at the installation site (range hood fan) are simplified. In addition, when providing variations in frontage, depth, design (shape), etc., it is only necessary to change the hood body and the front plate, eliminating the need to manufacture partition plates, filter bars, filters, etc. of various sizes and shapes. . As described above, according to the present invention, the main and sub intake ports on the left and right sides of the fan casing are formed to have a widened shape (wrapper type).
Since it is a blower unit surrounded by an air guide tube and provided with a filter at the open end of the air guide tube, it is possible to use a large filter, and it is possible to increase the efficiency of adsorbing fats and oils contained in flue gas. . In addition, since the air guide cylinder is engaged with the engaging relationship between the engaging claw and the engaging hole and sandwiched by one screw member, the engaging relationship is set at the time of mounting.
At the time of screwing and removing, remove the screwing member and then release the engagement to install and remove the air guide cylinder, before and after work such as inspection and replacement of the fan and motor, repair, cleaning of the fan casing, etc. Work is easy. Furthermore, because it has a filter, there is no filter between the blower unit and the front plate like a traditional range hood fan,
The hood body can be designed to prioritize high capture efficiency in consideration of the prevention of smoke diffusion, and based on that, it is possible to design and shape the customer's request, giving priority to the smoke capture efficiency of the hood body After that, you can have various variations. Then, the blower unit should be shipped separately from the hood body and installed on the hood body attached at the installation site.The filter, blower unit and hood body are integrated and shipped, and this is installed at the installation site. Each operation such as packing, transportation, and installation can be easily performed by a small number of workers as compared with the prior art to be installed. Next, embodiments of the present invention will be described with reference to the drawings. An embodiment of the present invention will be described with reference to the drawings.
Reference symbol A denotes a blower unit, and B denotes a hood body in which the blower unit A is installed. The blower unit A has a fan casing 1 having a volute shape and having a main intake port 11 on one of the left and right sides and a sub intake port 21 on the other, and a fan attached to the fan casing 1. The motor 2 and the air guide cylinder 3 and the like, which are detachably attached to the left and right side surfaces of the fan casing 1 so as to surround the main intake port 11 and the sub intake port 21 and have a detachable filter 4 at an open end. It is configured. The sub intake port 21 is formed by bending a bell mouth 31 in a curved shape inward on the side surface of the fan casing 1, and a motor mounting provided parallel to the sub intake port 21 so as to partially cross the sub intake port 21. The fan motor 2 is attached to the part 41. The main intake port 11 is provided with a rotating shaft 12 of the fan motor 2.
A bell mouth 31 is detachably attached to a detachable opening 51 opened on the side surface of the fan casing 1 with a diameter larger than the outer dimensions of a multi-blade fan (hereinafter referred to as a fan) 32 fixed to the nut 22. I have. The air guide cylinders 3 include a main intake port 11 side (hereinafter referred to as a first air guide cylinder 13) and a sub intake port 21 side (hereinafter referred to as a second air guide cylinder 23). As shown in FIG. 2, the first air guide cylinder 13 integrally has the bell mouth 31, and extends integrally with the outer end of the bell mouth 31, and the side surface of the fan casing 1 around the main intake port 11. A tubular part 13b of a flared type (flapper type) is formed to extend outward from an annular flange part 13a that comes into contact with the cylindrical part 13a, and a large rectangular suction port 13c is opened at the tip of the tubular part 13b. A support frame 13d of the filter 4 is formed at the edge of the suction port 13c. As shown in FIG. 2, the second air guide cylinder 23 extends from an annular flange 23a which comes into contact with the side surface of the fan casing 1 around the sub intake port 21 similarly to the first air guide cylinder 13. A tubular portion 23b is formed in a continuous manner in a projecting manner outwardly, and a large rectangular suction port 23c is opened at the tip of the tubular portion 23b, and a support frame portion of the filter 4 is provided at an edge of the suction port 23c. 23d. The filter 4 has a well-known structure formed in a rectangular plate shape by using an expanded metal, a lath net, or a slot filter. The filter 4 is dropped into the support frame portions 13d and 23d like a sliding door and is supported. Although not shown, a handle is provided near the lower end. Further, the cylindrical portions 13b of the first and second air guide cylinders,
As is clear from FIGS. 1 and 2, 23b extends from the annular flanges 13a, 23a at the base end to the rectangular suction ports 13c, 23c by expanding in the shape of a quadrangular pyramid, and extending to the rear surface. 13
The extended length of b 'and 23b' is longer than that of the front portions 13b "and 23b", so that a larger filter 4 is provided. The first and second air guide cylinders 13 and 23 are both detachable from the side surface of the fan casing 1. The attachment / detachment means includes first and second air guide cylinders 13,
A plurality of hooking claws 5 provided at a desired angle on one of the annular flange portions 13a, 23a of the fan case 1 and the side surface portion of the fan case 1 and cut and raised in the same direction; A plurality of engaging holes 6 formed corresponding to the claws 5 to which the engaging claws 5 are engaged and disengaged, and a flange portion in a state where the engaging claws 5 and the engaging holes 6 are engaged.
Threaded portion 7 for holding 13a, 23a on the side of fan case 1
And three members. As shown in FIGS. 3, 5 and 6, the hooking claws 5 are cut and raised at a desired angle so as to face two and the same direction in an L-shape on the same circumference on the side surface of the fan casing 1. Have been. The same direction does not indicate that the angles are the same, but indicates a wide range such as an obliquely upward direction, an obliquely downward direction, a lateral direction, and an upward direction. As shown in FIG. 4, the engaging hole 6 is opened at a position corresponding to the engaging claw 5 of the annular flanges 13a and 23a in a rectangular shape slightly larger than the engaging claw 5. Become
As shown in FIG. 5, each of the two hooking claws 5 is inserted, and in this state, the hooking hole edge 16 on the side close to the tip of the hooking claw 5 becomes The air guide cylinder 3 is slid so as to be sandwiched between them, thereby supporting the air guide cylinder 3 so as not to fall as shown in FIG. The screwing portion 7 includes a screwing tube portion 17 formed by drawing on the side surface of the fan casing 1 by burring, a screwing member (hereinafter referred to as a mounting screw) 27 screwed to the screwing tube portion 17, It is formed by an insertion hole 37 which is opened in the annular flange portions 13a and 23a and through which the mounting screw 27 is inserted, and is screwed into a position where the engagement between the engaging claw 5 and the engaging hole 6 coincides as described above. The cylindrical portion 17 and the insertion hole 37 are respectively provided, and in the hooked state, the mounting screw 27 is screwed through the insertion hole 37 so as to cut a tap into the screwing cylindrical portion 17, thereby stabilizing the two guide cylinder portions 3. To the side of the fan casing 1. Of course, a nut to which the mounting screw 27 is screwed may be fixed to the back surface of the side surface of the fan casing 1.
More than two pieces may be provided so as to be more stable. Also,
Contrary to the above-described embodiment, the hook claw 5 is
The fan casing 1 is provided with an engaging hole 6 through which the engaging claw 5 is engaged and disengaged.
The air guide tube 3 may be detachably attached to the fan casing 1 by a user. Therefore, when the air guide tube 3 is removed for the purpose of checking and replacing the fan 32, cleaning the inside of the fan casing 1, checking and repairing the fan motor 2, etc., remove the filter 4 from the supporting frame portions 13d and 23d. To open the suction ports 13c and 23c, insert a tool through the suction ports 13c and 23c, remove the mounting screw 27, and easily remove the air guide cylinder 3 by sliding it in the direction opposite to the sliding direction. Since the bell mouth 31 is integrated with the first air guide tube 13, the fan 32 can be removed from the opening 51 by releasing the nut 22, and the fan motor 2
Since the air guide tube 23 is eliminated, it is possible to remove the motor guide portion 41 from the motor mounting portion 41 using a large space, or to perform inspection and repair with the mounted state. In such a blower unit A, the exhaust port at the upper end of the fan casing 1 at the installation site is a hood b1.
Is attached to the top plate b1 'in a suspended manner so as to communicate with the exhaust duct 100 connected to the top plate b1'. Thereafter, the front opening portion of the hood body b1 is covered with the front plate b2 to cover the hood body B.
Is composed. Reference numeral 8 denotes an operation unit provided at the lower end portion of the front plate b2, 9 denotes an illumination unit for illuminating the lower side, 10 denotes control of turning on / off the illumination unit 9, operation / stop of the fan 32, and the number of rotations. And 200, an electric cord for connecting the operation unit 8 and the control unit 10, and the lighting unit 9 together with the control unit 10,
It is housed in a control room 300 provided at the lower end.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a use state, in which one air guide cylinder is removed. FIG. 2 is a cross-sectional view of FIG. FIG. 3 is an enlarged perspective view of a retaining claw portion, which is a main part. FIG. 4 is an enlarged front view of the air guide cylinder, with a filter removed. FIG. 5 is an enlarged front view showing a state in which the air guide cylinder is attached, showing a state in which a filter is removed. FIG. 6 is an enlarged front view showing a state where the air guide cylinder is attached, and a state where a filter is removed. [Description of Signs] A: Blower unit 32: Fan (multi-blade fan) 1: Fan casing 11: Main intake port 41: Sub intake port 41: Motor mounting part 2: Fan motor 4: Filter 3: Air guide cylinder 31: Bell mouth 5: Hook claw 6: Hook hole 7: Screw part

Claims (1)

(57) [Claim 1] Either a main intake port or a sub intake port is provided on both left and right sides of a fan casing accommodating a multi-blade fan, and a part thereof is provided in the sub intake port. A motor mounting portion is traversed and a fan motor is mounted on the motor mounting portion, and the main and sub intake ports are provided with filters at the open end portions and a widened air guide tube provided on the side surface of the fan casing. A bell mouth that forms the main intake port is provided integrally with the surrounding air guide cylinder on the side of the main intake port, and the air guide cylinder is a side surface of a fan casing that faces the air guide cylinder and the air guide cylinder. A hook claw provided on one of the portions, a hooking hole provided on the other side, on which the hooking claw is hooked / unfastened, and the air guide cylinder being connected to the side of the fan casing in a hooking state of the hooking hook and the hooking hole. With a screw part to be pinched to Blower unit for range hood fan, characterized in that is removably attached to.