Air Purifier for Cooking

Abstract

To provide an air cleaner for cooking which is excellent in cleaning of an indoor environment without impairing design of an indoor space including a kitchen.SOLUTION: An air cleaner for cooking includes: an indoor hood; a suction chamber disposed within the indoor hood and having a suction port on a lower surface; a cleaner unit which communicates with the suction chamber through an exhaust unit and is disposed at an outdoor space; and an air supply duct which allows the cleaner unit and the indoor hood to communicate with each other. The cleaner unit has: a cleaning part including a water spray nozzle and a filter; an air blow part including an air blow function; and a connection part connected to the air supply duct. Cleaned air is supplied from air supply ports provided at the upper part side of the indoor hood to an indoor space.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air purifier that purifies cooking exhaust air in a purification device section installed outdoors and circulates the purified air indoors. [Background technology]

[0002] For example, in the home, the use of a cooking appliance that does not generate combustion gas generates cooking exhaust containing water vapor, oily smoke, odors, etc., but discharging this cooking exhaust outdoors creates issues such as a pressure difference within the room. As a result, air purifiers have been developed that purify cooking exhaust air indoors and circulate it instead of discharging it outdoors. For example, Patent Documents 1 and 2 disclose an indoor circulation type range hood in which cooking exhaust air is purified by passing it through a filter provided inside the indoor hood, and the purified air is circulated inside the room.

[0003] However, indoor hoods with such cleaning functions tend to be large because they require filters and cleaning devices inside, which detracts from the design of the room, including the kitchen. Some air purifiers supply purified air from a single or multiple air intake ports, but this can cause discomfort if the air is blowing directly onto the human body. Furthermore, when a large amount of cooking exhaust gas is generated or when the odor is strong, it may not be possible to purify all of the exhaust gas, and air containing residual odors may circulate within the room. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-104618 A [Patent Document 2] JP 2011-89739 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide an air purifier for cooking that is excellent in purifying the indoor environment without compromising the design of the room, including the kitchen. [Means for solving the problem]

[0006] The cooking air purifier of the present invention comprises an indoor hood, an air intake chamber arranged within the indoor hood and having an air intake port on its underside, a purification device unit arranged outdoors and communicating with the air intake chamber via an exhaust section, and an air intake duct connecting the purification device unit to the indoor hood, wherein the purification device unit has a purification section equipped with a water spray nozzle and a filter, an air blowing section equipped with an air blowing function, and a connection section with the air intake duct, and purified air is supplied into the room from the air intake port on the upper side of the indoor hood.

[0007] Here, the indoor hood refers to a cooking appliance that does not generate combustion gas, such as an electromagnetic cooking appliance installed in a kitchen. With the air purifier of the present invention, cooking exhaust air generated, for example, by the use of an electromagnetic cooker is exhausted from the lower side (air intake) of the indoor hood through an exhaust section such as an exhaust duct to an outdoor purification device section, and after being purified in this purification device section, is supplied into the room from the upper side (air intake) of the indoor hood via an air intake duct. Therefore, there is no need to provide a cleaning function inside the indoor hood, making it easier to make the indoor hood smaller. In addition, by supplying purified air from the upper side of the indoor hood, for example along the ceiling surface, even if a large intake port is provided in the intake chamber inside the indoor hood, the intake airflow is not affected, and the intake pressure can be reduced.

[0008] In the present invention, the connection portion may have a connection port for connecting to the air supply duct, an exhaust port capable of discharging air to the outdoors, and a switching damper for switching the passage of air to the connection port or the exhaust port. This allows the switching damper to be switched so that, when purified air is not being supplied to the room, steam generated by washing the inside of the purification section with hot water and strong odors that cannot be completely purified can be exhausted outdoors.

[0009] In the present invention, the exhaust section has an exhaust duct and an exhaust chamber arranged along the lower part from the back side of the purification section, and a part of the exhaust chamber may be provided between the purification section and the exterior wall of the building, in which case the purification section can be arranged on the back side of the indoor hood, separated by the exterior wall of the building. The exhaust section may have an outdoor exhaust duct extending along an exterior wall of a building, and the cleaning device section may be configured so that its mounting position on the exterior wall is adjustable by means of the outdoor exhaust duct. In this way, the purifying device unit can be disposed on or near the outdoor ground surface for easy maintenance, and the installation position of the purifying device unit can be changed to suit the shape and structure of the exterior wall. Effect of the Invention

[0010] The cooking air purifier of the present invention has a purification device unit with a purification function installed outdoors and circulates purified air indoors, so the indoor hood installed inside the room can be made smaller and it is also excellent at purifying the indoor environment. [Brief description of the drawings]

[0011] [Figure 1] 1A and 1B show an example of the structure of an air purifier for cooking according to the present invention, in which (a) is a schematic side view showing the flow of air, and (b) is a schematic top view thereof. [Diagram 2] (a) shows a perspective view seen from inside the room, and (b) shows a perspective view seen from outside. [Diagram 3] FIG. 13 is a perspective view of the second embodiment as viewed from the outdoor side. [Figure 4] FIG. 1(a) is a schematic side view showing the air flow in Example 2, and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An example of the structure of the air purifier for cooking according to the present invention will be described below with reference to the drawings. 1(a) and (b) show schematic diagrams showing the air flow, FIG. 2(a) shows a perspective view from the indoor side, and FIG. 2(b) shows a perspective view from the outdoor side. In this specification, the exterior wall 1 of a building refers to a wall that separates the inside and outside of a kitchen in the building.

[0013] As shown in Figures 1(a) and (b), the cooking air purifier comprises an indoor hood 10 arranged indoors, a purification device unit (purification unit 31, air blowing unit 33, connection unit 34) arranged outdoors, an exhaust unit (exhaust duct 21, exhaust chamber 22) for exhausting air from the indoor hood 10 to the purification device unit, and an air supply duct 41 for supplying air from the purification device unit to the indoor hood 10. In this embodiment, an electromagnetic cooker (hereinafter referred to as cooker 2) installed in a kitchen is installed close to the indoor surface of an exterior wall 1, and an indoor hood 10 is installed above the cooker 2 and in contact with the indoor surface of the exterior wall 1 and the ceiling 3. In this specification, the back surface refers to the surface facing the indoor surface of the exterior wall 1 in the case of an indoor hood 10, or the surface facing the outdoor surface of the exterior wall 1 in the case of a cleaning device unit, i.e., the surface closer to the exterior wall 1.

[0014] The indoor hood 10 has a generally rectangular shape that is open at the bottom, and as shown in FIG. 1(a), an air intake chamber 12 is held by a partition 14 that divides the interior space in the vertical direction. The air intake chamber 12 is roughly rectangular and has an air intake port 11 on the bottom and an exhaust duct connection port on the back, but there are no particular limitations on its shape as long as the cooking exhaust air sucked in from the air intake port 11 does not leak into the space above the indoor hood 10. The insulated exhaust duct 21 extends from the exhaust duct connection port of the intake chamber 12 so as to penetrate the exterior wall 1, and connects the intake chamber 12 to an exhaust chamber 22 arranged adjacent to the outdoor surface of the exterior wall 1 in a direction approximately perpendicular to the exterior wall 1. The insulated exhaust chamber 22 is generally L-shaped with a hollow space inside, and is disposed along the rear and lower parts of the purifying section 31 to ventilate cooking exhaust air into the purifying section 31. At this time, by driving the blower in blower section 33 provided adjacent to the upper part of purification section 31, cooking exhaust air is sucked from intake port 11 through exhaust duct 21 and exhaust chamber 22 from bottom to top within purification section 31.

[0015] The cleaning section 31 has a filter 32 therein and a water spray nozzle disposed in the vicinity thereof, and the cooking exhaust gas passing through the filter 32 is cleaned with water sprayed from the water spray nozzle. The water spray nozzle is preferably installed so that the flow rate of sprayed water is approximately uniform in the horizontal direction relative to the filter, and the water spray nozzle connected to a water supply pipe may supply water by operating a blower using, for example, an electromagnetic valve. Examples of the filter include a baffle filter, a punching filter, a mesh filter, and a baffle slit filter. Filters may be provided in two locations, upper and lower, within the purification section 31. In addition, an adsorbent such as activated carbon or ceramic may be placed inside the purification section 31, exhaust duct 21, exhaust chamber 22, etc. to adsorb odors and the like in the cooking exhaust air. The blower 33 blows the air purified by the purifier 31 to the connection part 34 . As shown in FIG. 1(b), the connection part 34 has a connection port 34a on its back side for connecting to the air supply duct 41, an exhaust port 34b on the front side through which air can be exhausted to the outdoors, and a switching damper 35 inside for switching the passage of air to either the connection port 34a or the exhaust port 34b. When supplying purified air into the room, the switching damper 35 prevents air from passing through the exhaust port 34b. However, in cases where a strong odor is generated, for example, by cooking curry or smoked food, the switching damper 35 can be switched to exhaust air outdoors through the exhaust port 34b. It is preferable that the switching damper 35 be capable of switching the air passing direction in cooperation with a manual button provided on the indoor hood 10, for example. As shown in FIG. 2(b), the cleaning section 31 may be automatically cleaned with hot water from an adjacent cleaning hot water tank 36, and it is preferable that the steam generated during this process be exhausted to the outside of the room through the exhaust port 34b.

[0016] As shown in Figure 1 (b), the air supply duct 41 extends from the connection port 34a of the connection part 34, through the exhaust chamber 22 and the exterior wall 1, and connects the connection part 34 to the upper rear side of the indoor hood 10 in a direction approximately perpendicular to the exterior wall 1. The purified air is blown out from the air intake duct 41 into the upper space of the indoor hood 10 and supplied to the room through air intakes 13a, 13b, and 13c provided on the upper side of the indoor hood 10 on three sides (front and both sides) other than the back. In this embodiment, slit-shaped air intakes are provided on three sides, but there are no limitations on the shape, number, or position of the air intakes. For example, it is preferable to provide the air intakes at the top of the indoor hood 10 close to the ceiling 3 so that purified air is supplied along the ceiling surface.

[0017] FIG. 3, and FIGS. 4(a) and (b) show a second embodiment. The second embodiment is an example in which a cooking appliance 2 is disposed away from an outer wall 1, as in an island kitchen or a counter-style kitchen, and an indoor hood 10 is disposed above the cooking appliance 2 and adjacent to a ceiling 3. In such a case, the kitchen air purifier according to the present invention is also useful. The following will particularly explain the differences from the first embodiment. In this embodiment, as shown in FIG. 4(a), the purifying unit 31 is provided adjacent to the outdoor ground 4 and on the outdoor side of the exterior wall 1, but there is no particular limitation on the location where the purifying device unit is provided outdoors.

[0018] As shown in FIG. 4(a), an air intake chamber 12 in the indoor hood 10 has an air intake port 11 on its lower surface and an exhaust duct connection port on its upper surface. The insulated exhaust duct 21a is arranged inside the ceiling 3 from the exhaust duct connection port of the intake chamber 12, extends along the ceiling surface to the outdoors, penetrating the exterior wall 1, and connects to an outdoor exhaust duct 21b extending along the exterior wall 1. As shown in FIG. 4(b), the insulated exhaust chamber 23 has a generally rectangular shape with a hollow space inside, and is disposed approximately perpendicular to the outdoor exhaust duct 21b and the purification section 31, connecting the two. Cooking exhaust air is sucked from bottom to top inside the purification section 31 by driving the blower section 33, purified and blown out to the connection section 34, and then supplied to the air supply duct 41b extending along the outer wall 1 from the connection port 34a provided on the upper surface of the connection section 34. The air supply duct 41b is connected to another air supply duct (not shown) that penetrates the upper surface side of the indoor hood 10 along the ceiling 3 so as to be parallel to the exhaust duct 21a shown in FIG. 4(a). As a result, the purified air is blown out into the space above the indoor hood 10 and supplied to the room through the air intakes 13a and 13b of the indoor hood 10 as shown in FIG. The air intake ports may be provided on the upper side of the indoor hood 10 on four surfaces (front, back, and both side surfaces) or on three surfaces. [Explanation of symbols]

[0019] 1. Exterior wall 2 Cooker 3. Ceiling 10. Indoor Food 11 Air Intake 12 Intake chamber 21 Exhaust duct 22 Exhaust chamber 31 Cleaning Section 32 Filters 33 Blower section 34 Connection 34a Connection port 34b Exhaust port 35 Switching damper 41 Air supply duct

Claims

1. The air conditioner is provided with an indoor hood, an air intake chamber disposed within the indoor hood and having an air intake port on a lower surface thereof, a cleaning device unit disposed outdoors and communicating with the air intake chamber via an exhaust unit, and an air supply duct communicating the cleaning device unit with the indoor hood, The cleaning device unit has a cleaning unit equipped with a water spray nozzle and a filter, a blower unit equipped with a blowing function, and a connection unit with the air intake duct, and the cleaned air is supplied into the room from an air intake port on the upper side of the indoor hood, This cooking air purifier is characterized in that the exhaust section has an exhaust duct and an exhaust chamber arranged along the rear and lower part of the purification section, and a part of the exhaust chamber is provided between the purification section and the exterior wall of a building.

2. The cooking air purifier according to claim 1, characterized in that the connection part has a connection port for connecting to the air supply duct, an exhaust port capable of discharging air to the outdoors, and a switching damper for switching the passage of air to the connection port or the exhaust port.

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