JPH04281135A - Range hood fan - Google Patents

Abstract

PURPOSE:To obtain a range hood fan having an air feed chamber incorporating a cooling and heating temperature controlling unit which can take into a room air of an appropriate volume at an appropriate temperature without decreasing trap efficiency. CONSTITUTION:A hood 33 having a cylinder 33 is mounted in the lower part of a chamber 21 having inside a fan means 25, and a filter 41 is provided in the cylinder 33, whereby a range hood fan body is formed. In the upper part of the body, a plurality of air feed ports 54 are provided and an air feed box 53 having a duct connection member 58, to the rear part of which an air feed duct 60 from the outdoor is connected, is mounted detachably. Further, a heating spiral fin 66 and a cooling spiral fin 67 are provided in the air feed box 53.

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 in which a temperature control unit for heating and cooling is provided in an air supply box for supplying outside air.

0002

BACKGROUND ART FIG. 9 is a diagram showing a conventional range hood fan disclosed in, for example, Japanese Utility Model Publication No. 1-23057. A motor 6 is attached to the rear wall of the casing via a mounting base 5, and a centrifugal fan 8 is attached to the rotating shaft (not shown) of this motor with a nut 7. There is. and,
A suction port 3 faces the centrifugal fan, and an exhaust port 4 faces a predetermined position on the outer periphery of the centrifugal fan 8 on the discharge side. Reference numeral 9 denotes a filter that covers an opening 10 formed at the bottom of the range hood main body 2. Reference numeral 11 denotes an exhaust chamber formed at a predetermined position on the upper surface of the range hood main body 2, and a tapered duct connection frame 13 provided at the rear opening 12 of the exhaust chamber has a free end extending through a wall (not shown). The inside of the exhaust duct 14, which is connected to the outside, is fitted and connected. Reference numeral 15 denotes a plurality of mounting screws 1 at predetermined positions on the upper surface of the range hood main body 2 so as to cover the exhaust chamber 11 from the front thereof.
6, the air supply chamber doubles as a cosmetic case and has a slit-shaped intake hole 17 formed on the front surface. The inner end of a duct 19 whose free end passes through the wall and communicates with the outside is fitted and connected. 20 is an air blowing section.

A conventional range hood fan is constructed as described above, and when power is input to the motor 6 and the fan 8 rotates, oily smoke from the kitchen (not shown) is sucked into the suction port 3 through the filter 9, and the fan Air is discharged from the exhaust duct 14 to the outside through the duct connection frame 13 from the fan 8, and the air is discharged to the outside, resulting in a negative pressure inside the room compared to the outside, and the air supply duct 19 and the air supply Air flows in from the outside through the chamber 15 and is blown into the room through the air supply hole 17.

0004

[Problems to be Solved by the Invention] In the conventional range hood fan as described above, the opening 10 of the range main body 2 and the suction port 3 of the blowing air section 20 are close to each other, and the suction space is wide.
There were problems in that a sufficient suction flow rate could not be obtained, oil smoke overflowed from the outer periphery of the range main body 2, the collection efficiency was poor, and the mounting location of the range main body 2 was contaminated by the overflowing oil smoke.

Furthermore, since the air supply hole 17 is opened only on one side, and a large opening area cannot be secured, it gives directionality to the indoor airflow at the installation point, and the wind speed increases, resulting in a strong directional flow in the room. There was a problem in that a certain air current was generated, which disturbed the oil smoke and reduced the collection efficiency of the range.

[0006] In addition, the air supply from the air supply hole 17 allows outside air to enter as is, cold air in winter, and hot air in summer.
There was a problem that it caused discomfort.

[0007] This invention was made to solve the above problems, and has a structure that allows a sufficient suction flow rate to prevent oil smoke from overflowing from the outer periphery of the microwave oven body, has good collection efficiency, and prevents dirt from being installed. To provide a range hood fan that is easy to use without causing discomfort, which can obtain appropriate air supply without deteriorating collection efficiency, and which can supply air from an air supply hole at an appropriate temperature. The purpose is to

[0008]

[Means for Solving the Problems] A range hood fan according to the present invention includes a chamber in which a blower is disposed inside, a discharge port on an upper surface and a suction port on a lower surface, and a peripheral end of the suction port of the chamber. A hood provided through a cylindrical portion that is connected to the cylindrical portion with an inclination further outward, and a side wall that is disposed within the hood to face the suction port at a predetermined distance, and that faces the hood. an air supply box comprising: a rectifying plate having a rectifying plate, a filter provided between the rectifying plate and the inner wall of the cylindrical part, and a panel provided around the hood, and having a plurality of air supply ports at the upper part of the panel. A temperature control unit for heating and cooling is installed inside the air supply box, and a duct connection port communicating with the air supply port is provided on the back.

Furthermore, the air supply box is provided with a temperature sensor switch that is set to a predetermined supply air temperature, and this temperature sensor switch is linked to a heating/cooling temperature control unit.

0010

[Operation] The present invention includes a chamber in which a blower is disposed inside and has an exhaust port on the top surface and a suction port on the bottom surface, and is connected to the chamber with an inclination outward from the peripheral edge of the suction port of the chamber. a hood provided through a cylindrical portion; a rectifying plate disposed in the hood to face the suction port at a predetermined distance and having opposing side walls; An air supply box having a plurality of air supply ports is provided in the upper part of the panel, and includes a filter provided between the inner wall of the cylindrical part and a panel provided around the hood. By installing a control unit inside and providing a duct connection port on the back that communicates with the air supply port, the suction flow is drawn in between the rectifying plate and the inner wall of the cylindrical part as a suction air path, and the dimensions of this suction air path are As a result of this relationship, the suction flow velocity increases, and the air supply flow flows from the duct connection port through the air supply port, and furthermore, the air supply flow can be adjusted to cold air or hot air by the cooling/heating temperature control unit.

[0011] Furthermore, by providing a temperature sensor switch set to a predetermined supply air temperature in the air supply box and interlocking this temperature sensor switch with the cooling/heating temperature control unit, any temperature set on the temperature sensor switch can be adjusted. Temperature air flow enters from the air supply port.

0012

[Embodiment] Figures 1 to 8 are diagrams showing an embodiment of the present invention. In the figures, 21 is a chamber, which is made of a box and has a suction port 22 on the bottom surface and an exhaust port 23 on the top surface. A duct 24, one end of which is connected to the outside, is connected to this outlet. Note that a plurality of the discharge ports 23 are provided depending on the construction conditions. Reference numeral 25 denotes an air blower installed in this chamber, and a motor 26 is connected to the rotating shaft 2 on the upper surface of the chamber 21.
7 is directed downward, and a blade 28 made of, for example, a sirocco blade is attached to this rotating shaft. Reference numeral 29 denotes a casing provided around this blade, which is connected to the suction port 22 and the discharge port 23.
will be communicated with. Reference numeral 30 denotes a wall fitting provided on the back side wall of the chamber 21, which is engaged with a fitting provided on a wall (not shown) to fix the range main body 31. Reference numeral 32 denotes a hood, which is connected to the lower part of the chamber 21 via a cylindrical part 33 formed with an outward slope from the peripheral end of the suction port 22, and has a switch part 34 and a circuit part 35 on the front surface. It is installed internally. Reference numeral 34a denotes a summer temperature control unit operation switch provided in this switch section, which operates a cooling/heating temperature control unit to be described later. 34b is a winter temperature control unit operation switch, which also operates the cooling/heating temperature control unit. 36 is a piece fixed to the inner wall of the cylindrical part 33, 37 is a metal fitting attached to the inner wall of the cylindrical part 33 opposite to this piece, and 38 is a rectifying plate, for example, a rectangular side wall 39 with opposing side walls 39 inclined toward the center. It is held and bent to form a trapezoidal cross-sectional shape, and each corner is formed into an arc. Reference numeral 40 denotes a fixing claw provided at the bottom of the current plate, on which fixing arms A and B, which will be described later, are locked. Reference numeral 41 denotes a filter, which is made of a perforated plate made of aluminum, for example, with both ends bent at a predetermined angle, and the center part is placed in the rectifying plate 38, and the rectifying plate 38 serves as an oil receptacle from this filter. Becomes a department. Note that this filter has porous holes to rectify the intake air flow and collect oil from oil smoke. 42 is a two-layer filter installed above the filter 41,
For example, it is made of an aluminum net and collects oil smoke. Reference numeral 43 denotes a fixed arm A, which has a U-shape, one side of which is held by a fixed claw 40 of the rectifying plate 38, and the other side fixed to the cylindrical portion 33 with a screw 44. Reference numeral 45 denotes a fixed arm B, which has a U-shape and is held by the fixing claw 40 at one end, and the other end is inserted into an opening (not shown) provided in the inner wall of the cylindrical portion 33 and the end thereof is bent to form the cylindrical portion. It is locked with 33. A panel body 46 is provided around the hood 32 in a U-shape to cover the chamber 21 and the hood 32, and has a hook hole 47 for mounting the panel and a screw hole 48 on the front side. Reference numeral 49 denotes a panel, which is provided with a claw 50 on the upper part that engages with the hook hole 47 and a stopper part 51 that comes into contact with the screw hole 48 on the lower part, and is detachable from the panel main body 46, and is installed at a location where the microwave main body 31 is installed. You can replace it with any color based on the color relationship. 52 is a cover that covers the upper surface of the panel 49, and 53 is an air supply box disposed on this cover, which has air supply ports 54 on the front and left and right sides. Reference numeral 55 denotes an air supply chamber connected through an opening 56 formed at the back of the air supply box, with a communication port 57 communicating with the opening 56 at the front, and an air supply port 54 at the rear lower surface. Duct connection port 58 communicating with
is installed. 59 is a duct connecting member attached to this duct connecting port, which is an L-shaped elbow and connects the air supply chamber 5.
5 protrudes downward, and an air supply duct 60 is connected to the tip of the air supply duct 60 from outside through the wall. Reference numeral 61 denotes a shutter provided at the opening 56, which is sealed by a drive motor 62, and an operation instruction is interlocked with the switch section 34 to shut off the air flow from the duct connection port 58. Note that the air supply box 53 including the air supply chamber 55 can be attached to and detached from the panel 49 using mounting screws (not shown). Reference numeral 65 denotes a temperature control unit for heating and cooling, which is provided in the air supply chamber 55 of the air supply box 53. Reference numeral 66 denotes a heating spiral fin forming one side of this heating and cooling unit, which is connected to a hot water pipe from a hot water boiler (not shown), through which hot water flows. Reference numeral 67 denotes a cooling spiral fin that also forms the other side, and is connected to a cold water pipe of a cooler (not shown), through which cold water flows. A temperature sensor switch 68 is installed inside the air supply box 53 and is linked to a heat source control switch (not shown) for each spiral fin 66, 67.

In the range hood fan configured as described above, the range main body 31 is fixed by engaging the wall-mounted fitting 30 with a fitting provided on the wall, which is the installation surface, and the duct 24 is connected to the outlet 23. Connected and piped to the outside. Next, from below the hood 32, the two-layer filter 4 is
One side of the filter 41 on which the filter 2 is placed is locked to the piece 36, and the other side is placed on the stopper 37. Then, one of the fixed arm A43 and the fixed arm B45 is attached to the fixed claw 4.
The rectifying plate 38 held between the two is disposed within the hood 32 so as to face the suction port 22 by fixing the other of the fixing arms A43 and B45 to the cylindrical portion 33 from below the hood 32, and then assembled. Can be done. Next, when power is input to the blower unit 25, oily smoke generated from a cooking appliance (not shown) is removed from the rectifying plate 3 by the operation of the blower unit 25.
8 and the inner wall of the cylindrical portion 33, the filter 41
The two-layer filter 42 performs rectification and oil collection, and since the air passage is narrow, the flow velocity increases, and even oil smoke overflowing from the outer periphery of the hood 32 is forcibly sucked in by its negative pressure. Then, it flows from the suction port 22 to the discharge port 23 and is discharged from the duct 24 to the outside. In this case, the oil collected by the filter 41 accumulates in the rectifier plate 38 and is disposed of when the rectifier plate 38 is removed. In addition, due to the operation of the blower 25, a large amount of air is discharged to the outside along with oily smoke, so that the indoor pressure becomes negative pressure compared to the outdoor pressure, and outside air is sucked through the air supply duct 60 and the air supply box Air flow is blown out from three air supply ports 53 . At this time, in winter, by turning on the winter temperature control unit operation switch 34b, hot water flows through the heating spiral fins 66 and the air is heated. Furthermore, in the summer, by turning on the summer temperature control unit operation switch 34, cold water flows through the cooling spiral fins 67, and the air flow is cooled. Furthermore, by using the temperature sensor switch 68, cooling/heating is performed at a constant temperature, and heating/cooling can be automatically performed in a stable air flow. On the other hand, when the air blower 25 is not operated, the opening 56 of the air supply box 53 is sealed by the shutter 61 by the drive motor 62, and outside air does not enter.

[0014]

Effects of the Invention As described above, the present invention comprises a chamber in which a blower is disposed inside, a discharge port on the top surface and a suction port on the bottom surface, and A hood provided through a cylindrical portion that is continuous with an inclination, and a current plate disposed within the hood so as to face the suction port at a predetermined distance, and having side walls facing each other. , a filter provided between the baffle plate and the inner wall of the cylindrical portion, and a panel provided around the hood, an air supply box having a plurality of intake ports provided at the top of the panel, and the air supply box By installing a temperature control unit for heating and cooling inside the box, and providing a duct connection port on the back that communicates with the air intake port, the temperature of the air flowing from the intake port can be brought close to the indoor temperature regardless of the season. This allows for a comfortable air supply to be taken in, providing countermeasures against the cold in the winter and the heat in the summer.

[0015] Furthermore, by providing a temperature sensor switch set to a predetermined supply air temperature in the air supply box and interlocking this temperature sensor switch with the cooling/heating temperature control unit, the temperature of the supply air can be adjusted arbitrarily. It is possible to automate the process and improve usability.

[Brief explanation of the drawing]

FIG. 1 is a slanted view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is an installation plan view showing an embodiment of the present invention.

FIG. 4 shows an embodiment of the present invention, and is a partial cross-sectional view showing how the current plate is attached to the cylindrical portion, and a plan view showing the connection between the current plate and fixed arms A and B.

FIG. 5 is an exploded perspective view of a panel body showing an embodiment of the present invention.

FIG. 6 shows an embodiment of the present invention, in which a is a plan view of a rectifying plate and b is a sectional view taken along the cross section A--A of a.

FIG. 7 is a cross-sectional view showing an embodiment of the present invention without an air supply box attached.

FIG. 8 is a front view showing an embodiment of the present invention, including a partial cross section, when an air supply box is not attached.

FIG. 9 is a sectional view showing a conventional range hood fan.

[Explanation of symbols]

21 Chamber 22 Suction port 23　Discharge port 25　Blower device 32 Food 33 Cylinder part 38 Current plate 39 Side wall 41 Filter 49 Panel 53 Air supply box 54 Air supply port 55 Air supply chamber 58 Duct connection port 65 Temperature control unit for heating and cooling 68 Temperature sensor switch

Claims (2)

[Claims] Claim 1: A chamber having an air blower disposed therein, having a discharge port on the top surface and a suction port on the bottom surface, and a chamber connected to the chamber so as to be inclined outward from the peripheral edge of the suction port of the chamber. a hood provided through a cylindrical portion; a rectifying plate disposed within the hood to face the suction port at a predetermined distance and having opposing side walls; and the rectifying plate and the cylindrical portion. An air supply box including a filter provided between the inner wall and a panel provided around the hood, and a plurality of air supply ports is provided at the top of the panel, and a temperature control unit for heating and cooling is installed in the air supply box. A range hood fan characterized by having a duct connection port installed inside the fan and a duct connection port communicating with the air supply port on the back. 2. Claim 1, characterized in that the air supply box is provided with a temperature sensor switch that is set to a predetermined supply air temperature, and the temperature sensor switch and a heating/cooling temperature control unit are linked. Range hood fan as described in section.