JPS6132546B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a duct connection device for a range hood.

[Background of the invention]

Conventional range hoods have been developed in which an exhaust hole is provided on the side of the range hood body and a duct communicating with the outdoors is directly connected around the exhaust hole.
However, with such a configuration, it is necessary to set the duct so that it closely matches the area around the exhaust hole, and in a range hood where the duct is generally fixed to the house in advance, both are It was difficult to make a tight connection.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a range hood duct connection device that allows easy communication between the duct and the circumference of the exhaust hole on the range hood main body side, without having to set the duct so that they match exactly. be.

[Summary of the invention]

The present invention provides a joint case 53 for the range hood main body F.
In a range hood duct device in which a cylindrical duct 51 is connected in communication with an exhaust hole 57 of a joint case 53, a cylindrical intermediate joint 61 is slidably inserted into the duct 51, and this intermediate The flange 62 provided on one side of the joint 61 is connected to the exhaust hole 5.
7, a part of the flange 62 is made into a wide eccentric flange, and a handle 63 is provided in the middle joint 61.
The range hood duct connection device is characterized in that the intermediate joint 61 is fixed to the range hood main body F from the inside of the joint case 53.

[Embodiments of the invention]

An embodiment of the present invention will be described below based on the drawings. First, the main body of the range hood will be explained in FIG. 1. Reference numeral 1 denotes a main body cabinet, which is composed of two opposing side plates 2, a top plate 3, and a rear plate 4. The rear part of the main body cabinet is partitioned by a partition plate 5, and the partition plate 5, the rear plate 4, and the upper plate 3 constitute a fan chamber 6. The upper plate 3 and the rear plate 4 are integrally formed by bending a steel plate. Reference numeral 7 denotes a motor fixed to the rear plate 4 with a mounting leg 8, and a turbo-type impeller 9 is fixed to its rotating shaft. 10 is a suction port of a fan formed in the partition plate 5. Reference numeral 11 is removably attached by means of a support fitting 12 provided on the partition plate 5 with a grease filter, and an elastic support fitting 14 provided on the horizontal partition plate 13 and made of a leaf spring or the like so that the upper part thereof is tilted toward the front. When removing this grease filter 11, use the handle 15 provided at the lower end of the grease filter 11.
This can be easily done by placing your finger on the handle, pulling up the grease filter 11 in the direction of the arrow, and rotating it as shown by the two-dot chain line. A front cover 16 is rotatably attached to the front end of the upper plate 3 by a hinge 17. The front cover 16 has an operation box 18 at its lower end and an auxiliary intake hole 19 at its upper part. Reference numeral 20 indicates a plurality of switches disposed within the operation box 18 for switching the rotational speed of the motor 7 between high, medium, and low speeds. When the front cover 16 is attached, the front cover 16 is placed in contact with the packing 21 provided at the front end of the horizontal partition plate 13, as shown in the figure. , the upper part thereof constitutes the auxiliary intake chamber 23. This packing 21 maintains airtightness between the main intake chamber 22 and the auxiliary intake chamber 23. Reference numeral 24 designates a vent hole opened at the rear of the elastic support fitting 14 of the horizontal partition plate 13. 25 is located at the rear part of the auxiliary intake chamber 23 and is connected to the horizontal partition plate 13.
Electrical parts such as transformers installed on top.
This transformer 25 is provided to open a gas stove (not shown) connected to a gas stove when the range hood is turned on. Reference numeral 26 indicates a hole for connecting a duct provided in each side plate 2, and reference numeral 27 indicates a duct hole attached to the upper plate 3 for connecting an exhaust duct (not shown). 28 is at the upper end of the rear plate 4;
This recess 2 is a recess provided over the entire width L.
A mounting bracket 29 for the main body, which fits within the main body 8 or protrudes slightly, is provided over the entire width. This mounting bracket 29 engages with a bracket 30 fixed to the wall W to which the range hood is attached, and the range hood is attached to the wall W.
Used to install on. This recessed portion 28 is
It is formed by integrally bending the rear plate 4 made of a steel plate, and is used to increase the strength of the main body and to mount the range hood as close to the wall W as possible. The lower part of the partition plate 5 has a sloped part 31 that slopes downward as it approaches the rear plate 4, and oil droplets dripping from the grease filter 11 are transmitted from this sloped part 31 surface to the inner surface of the rear plate 4, and finally reach the rear plate 4. The oil is made to accumulate in the oil receiving groove 33 formed at the bent portion 32 of. Further, this inclined portion 31 greatly contributes to improving the performance of the fan device configured with the turbo-type impeller 9. That is, the air discharged to the outer periphery by the impeller 9 disposed close to the suction port 10 is smoothly guided and exhausted to the rear of the fan chamber 6 by the inclined portion 31, so that the air is directly below the impeller 9. This improves the performance of the fan device. 34 is a cord holding groove formed by bending the outer periphery of the front cover 16;
The cord 35 connecting the switch 20 and the switch 20 is inserted and held. This cord 35 is particularly held along the upper retaining groove and the side retaining groove, and the cord 35 is connected to the auxiliary intake hole 19 through which the oil smoke passes.
In addition to preventing the cord 35 from crossing the section, the cord 35 is also prevented from dangling. 38 is a felt pasted around the entire circumference of this holding groove 34; 39 is a cord drawn out from the transformer 25 and connected to an external power source; 40 is a front panel of the operation box 18; 41 is a cord of the front cover 16. When the switch 20, which represents the support rod, is operated to operate the motor 7, the oil smoke etc. coming out of the gas range rises and reaches the vicinity of the main intake chamber 22 of the range hood. The air containing oil smoke that has reached the vicinity of the main intake chamber 22 is sucked by the impeller 9 through the grease filter 11, the oil smoke is collected by the grease filter 11, and clean air is transferred to the impeller 9.
Therefore, the air is exhausted from, for example, a duct attached to the duct hole 27. On the other hand, the air containing dilute oil smoke that leaves the air passage taken into the main intake chamber 22 rises to the ceiling, and the air stagnant on the ceiling is sucked in through the auxiliary intake holes 19, and the air that leaves the air passageway opened in the horizontal partition plate 13. It passes through the opening 24 and reaches the fan chamber 6.
The air is similarly exhausted to the outside by the impeller 9. The oil smoke sucked in from the auxiliary intake hole 19 is very thin.
There is no particular problem even if the exhaust is directly exhausted without passing through the grease filter 11.

Figure 2 shows the range hood body F shown in Figure 1.
This is a general example of attaching a cylindrical exhaust duct 51 to a cylindrical exhaust duct 51, and 52 is a T-shaped joint pipe. Generally, the exhaust duct 51 is fixed to the house in advance by a construction company, and when the range hood F is attached to the wall W of the house, misalignment is sure to occur. Therefore, as shown in FIG.
If a joint pipe 52 with the same diameter is used, the joint pipe 52 and exhaust duct 51 cannot be joined. Therefore, as shown in Figure 3, it absorbs misalignment and maintains good airtightness between the range hood F and the existing exhaust duct 5.
It is conceivable to use a joint case 53 for connecting 1. The present invention provides a pipe connection device that can be easily attached to an existing exhaust duct 51 using the joint case 53. FIG. 4 shows the relationship between the range hood F and the joint case 53 that is attached to the range hood F with screws or the like. In this figure, reference numeral 55 indicates an exhaust hole formed on the upper surface of the range hood F, 56 indicates an intake hole formed on the lower surface of the joint case 53, and 57 indicates a circular exhaust hole formed on both sides of the joint case 53. Exhaust hole 5
5 and the intake hole 56 are of the same size, and the exhaust hole 5
It has a larger area compared to 7. in this way,
The air discharged from the range hood F is temporarily transferred to the large intake hole 5.
6 into the joint case 53, and then led to the exhaust duct 51 through the small diameter exhaust hole 57, so that the passage of the discharged air is gradually narrowed and the exhaust efficiency is increased. According to experiments, when the passage area of the intake hole 56 is made 1.5 to 2 times that of the exhaust hole 57, the exhaust volume is reduced by about 50%.
It increased. FIG. 5 shows an exhaust duct 51 of dφ having the same diameter as an exhaust hole 57 of dφ provided in the joint case 53.
A configuration has been described in which a cylindrical intermediate joint 59 having a flange 58 is used to absorb misalignment when attaching. As is clear in this figure, the exhaust hole 57
Assuming that the exhaust duct 51 is deviated by the maximum amount eφ, the diameter Dφ of the collar 58 is set as (d
+e) φ If the deviation is within eφ, the collar 58 of the intermediate joint 59 will hit the outer periphery of the exhaust hole 57 and the exhaust duct 51 and the exhaust hole 57 can be reliably connected regardless of the deviation in any direction. It is. However, if the flange 58 is made to protrude with the same diameter all around the circumference as shown in FIGS. 5 and 6, the upper end of the flange 58 will be When protruding upward from the upper surface of the joint case 53 and coming into contact with the ceiling of the room to absorb misalignment toward the back side, there was a risk that the rear end of the collar 58 would come into contact with the wall of the room. FIG. 8 shows an intermediate joint that is a feature of the present invention, and for this reason, the intermediate joint 61
As shown in Fig. 8, there is an eccentric tsuba 6 which is partially wide.
2 is provided. Reference numeral 63 denotes a handle provided at the end of the intermediate joint 61 on the flange side.

In addition, in FIG. 7, the exhaust duct 51 is shown as a solid line.
The figure shows a state in which the middle joint hand 59 inserted into the joint case 59 is pulled out and the collar 62 is brought into contact with the exhaust hole 57 of the joint case 53 as shown by the imaginary line, that is, adjusted by L in the axial direction. FIG. 9 shows the size of the tsuba 62 shown in FIG. 8, and according to this diagram,
The maximum diameter of the tsuba 62 is d+e/2+f (e>
f), it is smaller than the collar 58 shown in FIG.
Therefore, the dimension from the center of the exhaust hole 57 to the top surface of the joint case 53 is as shown in FIG.
e) /2 can absorb misalignment. Furthermore, since the collar 62 is only partially enlarged (in the embodiment, about 1/3 of the entire circumference), material costs can be reduced. FIG. 11 is a view of the state in which the intermediate joint 61 is attached to the exhaust hole 57 of the joint case 53, as seen from the inside of the joint case 53. As is clear from this figure, insert your hand through the front cover attachment opening portion 64 and the exhaust hole 57 and pull out the handle 63 of the middle joint hand 61 toward the middle joint hand 53 side. Then, the collar 62 is rotated in the direction opposite to the displacement of the exhaust duct 51, and a pair of fixing metal fittings that are passed from the inner surface of the joint case 53 to the periphery of the exhaust hole 57 are fixed to the periphery 66 of the exhaust hole 57 with screws 67. do. Thereby, the intermediate joint 61 is fixed to the joint case 53. Thereafter, the lid attachment opening portion 64 is closed with a lid (not shown).
FIG. 12 is a detailed sectional view of the intermediate joint 61, and FIG. 13 is a detailed sectional view of the intermediate joint 61 attached to the joint case. In the figure, 68 is the middle joint 61
An asbestos tube 70 that does not have much elasticity is provided on the outer circumference of an elastic ring housed in an outer circumferential groove 69 to maintain fire resistance and airtightness. FIG. 13 shows this intermediate joint 61 inserted into the exhaust duct 51, pulled out to the joint case 53 side, and fixed. In this figure, 71 is fireproof packing, 72
is the intermediate cylinder. According to this figure, the asbestos cylinder 70, which does not have elasticity, can be brought into direct contact with the intermediate cylinder 72 or the exhaust duct 51 using the elastic ring 68, and even if there is some fitting error, airtightness can be maintained. can.

According to this range hood duct connection device, the intermediate joint 61 is slidably inserted into the duct 51, and the collar 6 provided on one side of the intermediate joint 61 is provided.
2 is brought into contact with the peripheral edge of the exhaust hole 57, so the axial gap between the duct 51 and the range hood main body F can be adjusted. Furthermore, since the flange 62 is an eccentric flange with a wide part, if the wide part is located on the opposite side to the direction in which the duct 51 is misaligned, the exhaust hole 57 and the duct 51 can be misaligned. In this case, the collar 62 will not protrude from the range hood main body F in the direction of misalignment, and will not come into contact with the ceiling, wall, etc. of the room. Furthermore, the handle 63 of the intermediate joint 61 is inserted into the exhaust hole 57.
Since the collar 62 of the intermediate joint 61 can be brought into contact with the range hood main body F by pulling it from the inside, assembly is easy. Moreover, since the intermediate joint 61 is fixed to the range hood main body F by fastening the fixing metal fitting 65 to the handle 63 from inside the range hood main body F, the wide part of the collar 62 can be fixed at any position.

〔Effect of the invention〕

According to the range hood duct connection device of the present invention, the intermediate joint is slidably inserted into the duct, and the collar provided on one side of the intermediate joint is brought into contact with the peripheral edge of the exhaust hole. The axial clearance between the duct and the range hood body F can be adjusted. Furthermore, since the flange is an eccentric flange with a wide part, if the wide part is located on the opposite side to the direction in which the center of the duct is misaligned, the exhaust hole and the duct can be communicated even if the center of the duct is misaligned. In this case, the collar does not protrude from the range hood main body F in the direction of misalignment, and does not come into contact with the ceiling, wall, etc. of the room. Furthermore, since the handle of the intermediate joint can be pulled from inside the exhaust hole and the collar of the intermediate joint can be brought into contact with the range hood main body F, assembly is easy. Moreover, since the fixing metal fitting was fixed to the handle from the inside of the range hood body F, and the intermediate joint was fixed to the range hood body F,
The wide part of the tsuba can be fixed at any position.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the range hood main body, Fig. 2 is a general duct connection configuration diagram, Fig. 3 is a duct connection configuration diagram showing an embodiment of the present invention, and Fig. 4 is a range hood and connection configuration diagram. A perspective view showing the relationship between the joint cases,
Fig. 5 is a developed view showing a general connection configuration, Fig. 6 is a side view, Fig. 7 is a front view, Fig. 8 is a front view of the middle joint, Figs. 9A and 9B are schematic front views of the same, Side view, Fig. 10 is a side view shown with the range hood,
FIG. 11 is an inner view of the joint case showing a state in which the intermediate joint is attached to the joint case, FIG. 12 is a cross-sectional view of the intermediate joint, and FIG. 13 is a cross-sectional view of the intermediate joint attached to the joint case. 1... Cabinet, 2... Side plate, 3... Top plate, 4... Rear plate, 5... Partition plate, 6... Fan chamber, 11... Grease filter, 13... Horizontal partition plate, 16... Front cover, 18...operation box,
19...Auxiliary intake hole, 51...Exhaust duct, 53
... Joint case, 56 ... Intake hole, 57 ... Exhaust hole, 58 ... Flange, 61 ... Middle joint, 62 ... Eccentric collar, 63 ... Handle, 65 ... Fixing metal fitting, 68 ...
...Elastic ring, 70...Asbestos cylinder.

Claims (1)

[Claims] 1. A circular exhaust hole 57 on one side of the range hood body F.
Attach the joint case 53 having the exhaust hole 5.
In the range hood duct device in which a circular duct 51 is connected to the duct 7 in communication, a cylindrical intermediate joint 6 is slidably connected to the duct 51.
A collar 62 provided on one side of the cylindrical intermediate joint 61 is brought into contact with the outer circumferential edge of the exhaust hole 57, and the collar 62 is made into an eccentric collar with a portion wide. A duct connection device for a range hood, characterized in that a handle 63 is provided inside the joint case 53, and the intermediate joint hand 61 is fixed to the outer peripheral edge of the exhaust hole 57 of the joint case 53 from inside the joint case 53.