JPH11294820A - Range hood fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the problems of an entire body to become large and a structure to be complex, which are ascribed to the relative positions of a blower and a heat exchanger which are arranged to have a long air path, drain receivers for oil reservoirs at two positions, and the like. SOLUTION: A range hood comprises a body which comprises an indoor air suction port 23 at a lower portion thereof, an indoor air exhaust port 2 at an upper portion thereof, an outdoor air suction port 3 and an outdoor air outlet port 4. The body further comprises an exhaust path 8 formed between the suction port 23 and the exhaust port 2, an indoor air exhaust blower 5 arranged at the exhaust path 8, an air-supply path 9 formed between the outdoor air suction port 3 and the outdoor air outlet port 4, and an air-supply blower 6 arranged at the blow path 9. The exhaust path 8 and the blow path 9 are crossed with each other, and a heat exchanger 10 is provided at the crossing. The exhaust path 8 and the air-supply path 9 are partitioned therebetween with a path wall. Further, the exhaust blower 5 is arranged so that the direction of the suction port thereof substantially makes a right angle with the direction of the suction port of the air-supply blower 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood fan used in a kitchen.

[0002]

2. Description of the Related Art A conventional range hood fan is shown in FIGS. FIG. 4 is a side sectional view showing an exhaust path, and FIG. 5 is a side sectional view showing an air supply path. In the drawing, an exhaust blower 5 for exhausting cooking exhaust to the outside of a main body 20 having an exhaust port 2, an air supply port 3, and an air supply outlet 19 on an upper surface, and external air from outside to a kitchen room. An air supply blower 6 for introduction and a heat exchanger 10 in which the temperature of the high-temperature air is transmitted to the low-temperature air side by a temperature difference by intersecting and passing the exhaust and the air without mixing. An exhaust air passage 8 and an air supply air passage 9 are defined by a partition wall 7 so as not to mix the exhaust gas or the air supply.

[0003] The exhaust blower 5 and the air supply blower 6 are mounted so that the suction ports are oriented in the same direction. The heat exchanger 10 is provided below the exhaust blower 5 and the air supply blower 6. A drain receiver 21 for storing dew water is provided below the heat exchanger 10, a filter 13 is horizontally mounted below the drain receiver 21, and an oil reservoir 22 is provided at a lower end of the exhaust air passage 8.

[0004] In the above configuration, the oil in the exhaust gas during cooking is collected by the filter 13 disposed horizontally, and the oil is retained. Oil that cannot be collected by the filter 13 adheres to the exhaust air path wall and is collected in the oil sump 22.
Condensed water condensed on the heat exchanger 10 is collected by a drain receiver 21 below the heat exchanger 10.

[0005]

In the conventional range hood fan, the exhaust blower and the air supply blower are installed in the same direction, so that the surrounding space is increased, and the heat exchanger is located below the blower. , There is a problem that each air path becomes long and the body becomes large due to the presence of many spaces. In addition, since a filter is attached to the lower surface of the main body, it has been necessary to remove the filter when removing the oil reservoir or the drain catcher, which was troublesome.

Further, since the position where oil contained in the exhaust gas during cooking accumulates and the position where the dew condensation water generated due to the temperature difference accumulates when the exhaust gas and the supply air intersect are dispersed, the oil is accumulated. Separate trays for storing dew and dew water must be provided separately, increasing the number of parts and complicating the structure.In addition, the trays must be separately attached and detached during maintenance, and the cleaning of the plates is troublesome. There was a problem that it took.

[0007] The present invention solves the above-mentioned problems by shortening the air passage in the main body, eliminating unnecessary space, and reducing the size. In addition, oil and dew water are stored in the same tray. It is an object of the present invention to provide a range hood with a simplified structure and reduced maintenance work.

[0008]

According to the present invention, there is provided a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing outdoor air. A main body having a suction port for sucking the room air, an exhaust air path formed between the exhaust port and the exhaust air path, and an exhaust blower for exhausting the room air to the exhaust air path; A suction air passage is formed between a suction opening for sucking air and an outlet for blowing out the outdoor air, and an air supply blower for supplying outside air to the supply air passage is provided. Cross the air supply path,
In a range hood fan provided with a heat exchanger for exchanging heat at the intersection, the exhaust air path and the air supply air path are partitioned by an air path wall, and a suction port of the exhaust air blower is connected to the air supply blower. Are arranged so as to be substantially perpendicular to the suction port surface.

In addition, the main body having a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blow-off port for blowing outdoor air is provided in the main body. A suction port for sucking indoor air,
An exhaust air path is formed between the exhaust air path and the exhaust air path, the exhaust air path has an exhaust blower that exhausts indoor air, and a suction port that sucks the outdoor air and a blowout port that blows the outdoor air. A heat exchange for forming an air supply passage between the air supply passages, providing an air supply blower for supplying outside air to the air supply passage, intersecting the exhaust air passage with the air supply passage, and performing heat exchange at the intersection. In a range hood fan provided with a heat exchanger, the exhaust air path and the supply air path are partitioned by an air path wall, and the direction of the exhaust air path of the heat exchanger and the direction of the suction port of the exhaust blower are adjusted. They are arranged so as to be substantially parallel.

The distance between the end face on the outlet side of the exhaust air path of the heat exchanger and the side face of the suction port of the exhaust blower is set within a range of 1/6 to 1/2 of the suction diameter of the exhaust blower. It was done.

[0011] Further, in the main body having a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing out outdoor air, A suction port for sucking indoor air,
An exhaust air path is formed between the air outlet and the air outlet, and an exhaust air blower that exhausts indoor air is provided in the exhaust air path between the air inlet that sucks the outdoor air and the air outlet that blows the outdoor air. A heat exchanger for forming an air supply passage in the air supply passage, providing an air supply blower for supplying outside air to the air supply passage, intersecting the exhaust air passage with the air supply passage, and performing heat exchange at the intersection. In the range hood fan, the air exhaust path and the supply air path are partitioned by an air path wall, and the lower surface of the air path wall is inclined so that the exhaust blower side is lowered.

[0012] Further, the indoor unit has a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing out outdoor air. A suction port for sucking air, and an exhaust air path formed between the exhaust port and an exhaust blower for exhausting room air in the exhaust air path, and a suction port for sucking the outdoor air; An air supply passage is formed between the air supply outlet and the air outlet, and an air supply blower for supplying outside air is provided in the air supply passage, and the exhaust air passage and the air supply passage intersect with each other. In a range hood fan provided with a heat exchanger for exchanging heat at an intersection, an air path wall separates the exhaust air path and the supply air path, and a filter support plate is provided at a position below the air path wall. Absorbs the indoor air A filter for collecting oil at the suction port is attached to the filter support plate, and under the filter support plate, dew condensation water condensing on the air supply side of the air path wall and oil collected by the filter. One tray is provided to receive the tray.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a side sectional view showing an exhaust path of a range hood fan embodying the present invention, FIG. 2 is a side view showing an air supply path of the range hood fan, and FIG. It is the front perspective view which showed the path | route. In the figure, a box-shaped main body 1 has an exhaust port 2 on its upper surface for exhausting room air to the outside, an air supply port 3 for sucking outside air, and a blowout port 4 for blowing out the sucked outside air into the room.
And a curtain plate 18 having an opening 17 so as to face the blow-out port 4, and an opening as a suction port 23 for sucking room air on the lower surface, and a space 23 a on the front side. I have. The lower corner portion 1a of the front surface of the main body is formed so as to be higher than the lower surface of the main body, and is rounded.

The main body 1 has a suction port 23 and an exhaust port 2
An exhaust air passage 8 is formed to reach the mounting plate A1
Exhaust blower 5 is fixed to exhaust port 2 via exhaust 5. Further, an air supply passage 9 extending from the air supply opening 3 to the blow-out opening 4 is formed, and the air supply blower 6 is fixed to the side surface of the main body 1 so as to suck the air supply from the air supply opening 3 through the mounting plate B16. .

The exhaust air blower 5 and the air supply air blower 6 have the air supply air blower 6 disposed beside the exhaust air blower 5, and the suction opening of the air supply air blower 6 faces the suction opening side of the exhaust air blower 5. It has a right angle relationship. The outer diameter of the casing of the exhaust blower is separated from the center of the inlet of the air blower 6 so that the area where the air flows to the air inlet 3 is secured. Can be approached. A heat exchanger 10 is disposed in front of a suction port of the exhaust blower 5, and an inlet surface of an air supply passage of the heat exchanger is arranged at a height near the center of the suction port of the blower.

On the back of the main body 1, a partition 7f is provided in a box shape so as to surround the exhaust blower 5 and the air supply blower 6, and an exhaust air passage at a suction portion of the exhaust blower 5 so that the exhaust and the air supply do not mix. 8 and an air supply passage 9 from the air supply opening 3 to the air supply outlet 4 are defined by connecting a plurality of partition walls 7f in a box shape. At a position above the center of the inlet of the air supply blower 6 where the air supply air path 9 and the exhaust air path 8 intersect,
A heat exchanger 10 is attached, and forms a supply air passage 9 a in a vertical direction toward the outlet 4, and forms an exhaust air passage in a horizontal direction toward a suction port of the exhaust blower 5.

In the heat exchanger 10, the exhaust air passage 8 and the supply air passage 9 are orthogonal to each other, and heat is exchanged between the two air passages from the high temperature side to the low temperature side to exchange heat. Heat exchanger 1
0 so that the direction of the exhaust air path is substantially parallel to the center axis direction of the suction port of the exhaust blower 5, and the center of the suction port of the exhaust blower 5 is lower than the center of the air path of the heat exchanger 10. Arrangement. Thereby, the flow of the wind from the heat exchanger 10 to the suction port of the exhaust blower 5 is not easily disturbed, and the pressure loss can be reduced. Further, the distance between the end face of the heat exchanger 10 on the outlet side of the exhaust air passage and the side face of the exhaust port of the exhaust blower 5 is about 1/5 of the suction port diameter. If this interval is in the range of 1/6 to 1/2, there is no great influence on the reduction of the blowing performance, and the pressure loss and noise can be suppressed so as not to increase.

The filter support A11 and the filter support A11 are provided in the opening serving as a suction port 23 for sucking air in the room below the partition wall 7a of the supply air passage 9 so that U-shaped portions are opposed to each other inside the main body 1. The supports B12 are each 12b,
The filter 1 provided at the end of the filter support plate 12a
3 are supported. The filter 13 is supported so as to be sandwiched between the U-shaped inner sides of the filter supports A11 and B12.
It is slanted so that the side is low.

From the outlet of the air supply blower 6, the heat exchanger 1
The partition wall 7a as the lower surface of the air path wall of the supply air path 9 up to 0 is inclined so that the blower side becomes lower. Due to this inclination, the cross-sectional area of the supply air passage 9 can be increased by that much.
The space between the suction port 23 and the filter support A11 can be widened. The lowermost end of the partition 7a is located above the filter support plate 12a, so that dew condensation water and oil fall on the filter support plate 12a. Below the filter support plate 12a, a tray 14 having a width wider than the filter support plate 12a and having a depth capable of storing water, oil, and the like is fixed to the bottom surface of the filter support plate 12a. The receiving tray 14 is provided with a supporting portion 14a having a horizontal surface extending in a brim shape.

The support portion 14a has a filter support plate 12a.
A notch for fixing the filter support plate 1a to the filter support plate 1a.
It is fixed by overlapping with the bottom surface of 2a. The tray 14 can be easily attached and detached from the near side by loosening the screw 14b. The filter support plate 12a has the lowest portion on the filter support B12 side, and a tray 1
4 are located. Water or oil that has fallen on the filter support plate 12a falls into the tray 14 from the end of the filter support plate 12a.

With the above configuration, when the range hood is operated, the exhaust gas during cooking passes through the filter 13 from the suction port 23, so that the oil adheres to the surface of the filter 13 and is removed, and then passes through the heat exchanger 10. Then, the air passes through the exhaust air passage 8 while exchanging heat with the supply air, and is discharged from the exhaust port 2 to the outside by the exhaust blower 5. On the other hand, outside air introduced from the outside is sucked in from the air supply port 3, passes through the air supply path 9 by the air supply blower 6, passes through the heat exchanger 10, and exchanges heat with the exhaust air, and then passes through the air outlet 4. Twister 18
And is blown out into the room through the opening 17.

At this time, dew condensation occurs on the exhaust air path side of the supply air path 9 outside the partition wall 7a due to the temperature difference between the exhaust air and the supply air.
Condensation water generated outside the partition 7a of the supply air passage 9 is
a, it falls down above the filter support plate 12a, which is the lowermost end of the partition wall 7a, and further falls along the filter support B12 into the tray 14, where it collects in the tray 14.

The oil contained in the exhaust gas during cooking is collected on the surface of the filter 13 when passing through the filter 13, flows along the surface to the filter support B 12, and forms dew condensation water in the tray 14. Drops and accumulates in the same way as. In this way, oil and dew water accumulate in one tray, and when discarded, oil and water can be disposed of simply by handling one tray, so that handling can be simplified.

Further, the filter support plate 12a is provided on the back side and the air path wall and the filter are inclined so that the filter support plate 12a side is lowered, so that the lowermost portions thereof can be formed almost close, and one oil or dew water can be removed. Since it can be dropped to a place, the size can be reduced by using a single tray. Also,
Since a space is ensured below the front side of the main body, the lower front corner of the main body can be rounded or the corner can be dropped, so that a person who cooks can afford and can easily use it.

[0025]

As described above, according to the present invention, the air supply blower is placed beside the exhaust blower in the main body of the range hood, and the suction opening surface of the exhaust blower and the suction opening surface of the air supply blower are substantially at right angles. In addition, by disposing the heat exchanger in front of the exhaust blower, there is no wasteful space, and the exhaust and supply air paths are shortened, so that the main body can be reduced in size.

Further, since the direction of the exhaust air path of the heat exchanger and the direction of the suction port of the exhaust blower are substantially parallel to each other in the main body of the range hood, the resistance to the flow of air can be reduced. There is an effect that the size can be reduced.

The distance between the end face of the exhaust air passage on the outlet side of the heat exchanger and the side face on the suction side of the exhaust blower is set within a range of ６ to の of the suction diameter of the exhaust blower. There is an effect that the size of the main body can be reduced without increasing the height.

Further, the lower surface of the air path wall between the exhaust air path and the supply air path is inclined so that the side of the exhaust blower becomes lower, so that the cross-sectional area of the supply air path can be increased and the pressure loss of the air path can be reduced. At the same time, the distance between the filter mounting portion and the filter mounting portion can be widened, and the pressure loss at the suction port can be reduced.

Further, since the condensed water generated on the wind path wall and the oil collected and transmitted by the filter are stored in the same saucer, the user only needs to handle one saucer, and the condensed water can be collected. Since oil and oil can be discarded, it is easy to handle and maintenance work is easy.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an exhaust path of a range hood fan of the present invention.

FIG. 2 is a sectional view showing an air supply path of the range hood fan of the present invention.

FIG. 3 is a perspective view showing an air supply path of the range hood fan of the present invention.

FIG. 4 is a sectional view showing an exhaust path of a conventional range hood fan.

FIG. 5 is a cross-sectional view illustrating an air supply path of a conventional range hood fan.

[Explanation of symbols]

1 body, 2 exhaust port, 3 air supply port, 4 outlet, 5 exhaust blower, 6 air supply blower, 7a
Partition wall, 7f partition wall, 8 exhaust air path, 9 supply air path,
Reference Signs List 10 heat exchanger, 11 filter support A, 12
Filter support B, 13 filters, 14 saucers.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hiroyuki Sakagami 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (5)

[Claims] 1. A main body having a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing out outdoor air. A suction port for sucking room air, an exhaust air path formed between the exhaust port and the exhaust port, and an exhaust blower for exhausting room air in the exhaust air path; a suction port for sucking the outdoor air; Forming an air supply path between the air outlet and the air outlet, and providing an air supply blower for supplying outside air to the air supply path, crossing the exhaust air path and the air supply path, A range hood fan provided with a heat exchanger for exchanging heat at the intersection, wherein the exhaust air path and the air supply air path are partitioned by an air path wall, and a suction port surface of the exhaust air blower is provided by the air supply blower. At right angles to the suction surface of the Range hood fan, characterized in that arranged in so that. 2. A main body having a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing out outdoor air. A suction port for sucking room air, an exhaust air path formed between the exhaust port and the exhaust port, and an exhaust blower for exhausting room air in the exhaust air path; a suction port for sucking the outdoor air; Forming an air supply path between the air outlet and the air outlet, and providing an air supply blower for supplying outside air to the air supply path, crossing the exhaust air path and the air supply path, In a range hood fan provided with a heat exchanger for exchanging heat at the intersection, the partition between the exhaust air path and the supply air path by an air path wall, and the direction of the exhaust air path of the heat exchanger and the The direction of the suction port of the exhaust blower is almost Range hood fan, characterized in that arranged so that the rows. 3. An interval between an outlet end face of an exhaust air passage of the heat exchanger and a side face of a suction port of the exhaust blower is within a range of １ ／ to の of a suction diameter of the exhaust blower. The range hood fan according to claim 2, wherein 4. A main body having a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing out outdoor air. A suction port for sucking room air, an exhaust air path formed between the exhaust port and the exhaust port, and an exhaust blower for exhausting room air in the exhaust air path; a suction port for sucking the outdoor air; Forming an air supply path between the air outlet and the air outlet, and providing an air supply blower for supplying outside air to the air supply path, crossing the exhaust air path and the air supply path, In a range hood fan provided with a heat exchanger for exchanging heat at the intersection, the exhaust air path and the supply air path are partitioned by an air path wall, and the lower surface of the air path wall is lower on the exhaust blower side. It is characterized by tilting Range hood fan. 5. A main body having a suction port for sucking room air downward, an exhaust port for discharging room air upward, a suction port for sucking outdoor air, and a blowout port for blowing out outdoor air. A suction port for sucking room air, an exhaust air path formed between the exhaust port and the exhaust port, and an exhaust blower for exhausting room air in the exhaust air path; a suction port for sucking the outdoor air; Forming an air supply path between the air outlet and the air outlet, and providing an air supply blower for supplying outside air to the air supply path, crossing the exhaust air path and the air supply path, In a range hood fan provided with a heat exchanger for exchanging heat at the intersection, a partition wall is provided between the exhaust air path and the supply air path by an air path wall, and a filter support plate is provided below the air path wall. Provided and sucks the indoor air A filter for collecting oil at the suction port is attached to the filter support plate, and under the filter support plate, dew condensation water condensed on the air supply side of the air path wall and oil collected by the filter are formed. A range hood fan characterized by a single saucer for receiving.