Ventilation system

Abstract

To provide a ventilation system that performs ventilation by a range hood without giving discomfort to a person staying in a room and a cooking person.SOLUTION: A ventilation system comprises: an air supply fan 28; an air supply device 2 for discharging air sucked from an underfloor space by the air supply fan 28, as an air supply flow A1 from a back surface side and both right and left surface sides of a cooking device installation part 82; and an air exhaust device 3 installed above the cooking device installation part 82, comprising an air exhaust fan 42, and for sucking and exhausting the air supply flow A1 by the air exhaust fan 42. The air supply device 2 operates in conjunction with the air exhaust device 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a ventilation system.

Background Art

[0002] There is known a device that blows fresh air obtained from the air supply and exhaust function of a kitchen range hood upward from around the stove. For example, Patent Document 1 describes a device that efficiently collects oil fumes generated and rising from the stove side during cooking with a range hood by an air wall that blows air from around the stove. This device includes a nozzle provided with air outlets that blow out fresh outdoor air to the left and right and rear, excluding the front around the stove, a reverse bowl-shaped range hood that opens downward above the stove and sucks in oil fumes, an exhaust fan motor provided in an air flow path that communicates the suction port of the hood with the outdoors, and an air supply fan motor that supplies air in the kitchen to the air flow path. and has.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When exhausting air with a range hood during cooking, an attempt is made to supply the same amount of air (air supply amount) from the outside as the amount of air exhausted (exhaust amount). At this time, in a house with high airtightness, sufficient air supply from the outside cannot be obtained, resulting in an imbalance between the exhaust amount and the air supply amount and a negative pressure in the room. When a negative pressure occurs, problems such as a decrease in the collection efficiency of oil fumes due to poor suction of the exhaust fan, abnormal noise, and increased noise of gap air may occur.

[0005] In order to increase the air supply volume while improving the collection efficiency, it is conceivable to provide an air supply port on the wall facing the outdoors, introduce outside air from this air supply port, and blow it out in the form of an air curtain toward the range hood from three directions, namely, the left and right and the rear around the cooker. In this case, unconditioned air whose temperature and humidity have not been adjusted enters the conditioned living room or the like. As in Patent Document 1, When unconditioned air enters the conditioned living room directly it may disrupt the air conditioning in the living room and cause discomfort to the occupants. In addition, when unconditioned air directly hits the hands of the cook who is cooking on the cooker, it may cause discomfort to the cook.

[0006] In this way, The exhaust device described in Patent Document 1 does not provide sufficient countermeasures from the viewpoint of the comfort of the occupants and the cook due to the disruption of the air conditioning.

Means for Solving the Problems

[0007] In order to solve the above problems, A ventilation system according to one aspect of the present disclosure is it includes an air supply fan, an air supply device that blows out the air sucked from the underfloor space by the air supply fan as an air supply flow from three directions around the cooking device installation part, and an exhaust device that is installed above the cooking device installation part, has an exhaust fan, and sucks and exhausts the air supply flow by the exhaust fan. The three directions are both sides and the rear in the left - right direction excluding the front of the cooking device installation part, and the air supply device operates in conjunction with the exhaust device.

[0008] It should be noted that what is obtained by converting the expression of the present disclosure among methods, devices, systems, recording media, computer programs, etc. is also effective as an aspect of the present disclosure.

Effects of the Invention

[0009] According to the present disclosure, it is possible to provide a ventilation system that ventilates with a range hood without causing discomfort to the occupants and the cook.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. In the examples and modification examples, the same or equivalent components and members are denoted by the same reference numerals, and appropriate redundant descriptions are omitted. Also, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. In addition, some of the members that are not important for explaining the examples in each drawing are omitted from the display.

[0012] Also, terms including ordinals such as first and second are used to describe various components, but this term is used only for the purpose of distinguishing one component from another component, and the components are not limited by this term.

[0013] The ventilation system according to the present disclosure includes an air supply function for conveying the air in the underfloor space into the room and an exhaust function for conveying the air in the room to the outside.

[0014] (Embodiment 1) Hereinafter, the ventilation system 100 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view for explaining the ventilation system of the present embodiment. FIG. 2 is a front view showing the ventilation system 100. As shown in FIG. 1, the ventilation system 100 is installed in a room 80 such as a kitchen having a cooking appliance installation part 82. The cooking appliance installation part 82 may be a table on which a cooking appliance 84 such as a gas stove or an IH stove is installed, or may be a table in which the cooking appliance 84 is incorporated.

[0015] Hereinafter, for the sake of convenience, the front-rear direction of the cooking device installation part 82 will simply be referred to as the "front-rear direction", the left-right direction of the cooking device installation part 82 as viewed from the user will simply be referred to as the "left-right direction", and the up-down direction of the cooking device installation part 82 will simply be referred to as the "up-down direction". The side where the user of the cooking device 84 stands with respect to the cooking device installation part 82 is referred to as the front side of the cooking device installation part 82, and the opposite side is referred to as the rear side. When viewing the front side of the cooking device 84 from the user, the left side is referred to as the left side surface side, and the right side is referred to as the right side surface side. Also, the front side of the cooking device installation part 82 is referred to as the "front side" or "front", the rear side is referred to as the "rear side" or "rear", the left side surface side is referred to as the "left side" or "left", and the right side surface side is referred to as the "right side" or "right". As shown in FIG. 1, the ventilation system 100 includes an air supply device 2 that supplies an air supply flow to the room 80 and an exhaust device 3 that exhausts the air in the room 80.

[0016] Referring to FIGS. 1 and 2, the air supply device 2 will be described. In this embodiment, the air supply device 2 is installed below the cooking device installation part 82. Specifically, as shown in FIG. 1, the air supply device 2 is installed in the underfloor space. As shown in FIG. 1, the air supply device 2 includes a main body part 20, a conveyance duct 26, and a blowout nozzle 24. In this embodiment, the main body part 20 is box-shaped and includes a suction port 22, a delivery port 23, an air supply fan 28, and a first control part 50. The main body part 20 is installed in the underfloor space of a room 80 such as a kitchen having a cooking device installation part 82 where a cooking device 84 such as a gas stove or an IH stove is installed. A flange 29 provided on the upper surface of the main body part 20 is fixed to the floor material 88.

[0017] The suction port 22 is provided on one side surface of the main body 20, and the air outlet 23 is provided on the side surface of the main body 20 opposite to the suction port 22. A filter 21 for reducing the inflow of foreign matters in the inhaled air is disposed between the suction port 22 and the air supply fan 28. The air supply fan 28 has a motor 27. The air supply fan 28 rotates integrally with the motor 27 based on the control of the first control unit 50. When the air supply fan 28 rotates, air is sucked from the suction port 22 according to its rotation speed and sent out from the air outlet 23. The base end side of the conveyance duct 26 is connected to the air outlet 23. As the air supply fan 28, a known fan mechanism such as a sirocco fan or a turbo fan can be adopted.

[0018] The conveyance duct 26 has a lateral dimension larger than its longitudinal dimension and has a flat cross section in the longitudinal direction. The conveyance duct 26 extends vertically in the vicinity of the cooking apparatus installation portion 82. The conveyance duct 26 is an air passage for conveying the air sent out from the air outlet 23 to the blowout nozzle 24. The blowout nozzle 24 is connected to the distal end side of the conveyance duct 26.

[0019] The conveyance duct 26 branches into three in the vicinity of the connection position to the air outlet 23, and has a first conveyance duct 26a, a second conveyance duct 26b, and a third conveyance duct 26c at the branched ends.

[0020] The first conveyance duct 26a has a lateral dimension larger than its longitudinal dimension and has a flat cross section in the longitudinal direction. The first conveyance duct 26a extends vertically on the back side of the cooking apparatus installation portion 82.

[0021] The second conveyance duct 26b has a longitudinal dimension larger than its lateral dimension and has a flat cross section in the lateral direction. The second conveyance duct 26b extends vertically on the left side surface of the cooking apparatus installation portion 82.

[0022] The third conveyance duct 26c has a longitudinal dimension larger than its lateral dimension and has a flat cross section in the lateral direction. The third conveyance duct 26c extends vertically on the right side surface of the cooking apparatus installation portion 82.

[0023] The air supply nozzle 24 includes a first air supply nozzle 24a provided on the back side of the cooking appliance installation section 82, a second air supply nozzle 24b provided on the left side surface of the cooking appliance installation section 82, and a third air supply nozzle 24c provided on the right side surface of the cooking appliance installation section 82. A first air supply flow A1a is blown out from the first air supply nozzle 24a, a second air supply flow A1b is blown out from the second air supply nozzle 24b, and a third air supply flow A1c is blown out from the third air supply nozzle 24c.

[0024] The air supply device 2 configured as described above blows the air in the underfloor space (inhaled air) sucked from the suction port 22 by the air supply fan 28 into the room 80 as the air supply flow A1 through the back side, the left side surface, and the right side surface of the cooking appliance installation section 82 from the air supply nozzle 24.

[0025] The first control unit 50 is composed of a microcomputer or the like and mainly controls the on / off of the air supply flow A1 and the air supply amount of the air supply flow A1 through the rotation of the motor 27. In particular, the first control unit 50 in this example communicates with a second control unit 52 of an exhaust device 3 described later via wired or wireless communication means. By communicating in this way, the air supply device 2 operates in conjunction with the exhaust device 3, and the air supply amount of the air supply device 2 changes in response to a change in the exhaust amount of the exhaust device 3.

[0026] That is, it includes an air supply fan 28, an air supply device 2 that blows the air sucked from the underfloor space by the air supply fan 28 as the air supply flow A1 from the back side and both the left and right side surfaces of the cooking appliance installation section 82, and an exhaust device 3 that is installed above the cooking appliance installation section 82, has an exhaust fan 42, and sucks and exhausts the air supply flow A1 by the exhaust fan 42. The air supply device 2 is configured to operate in conjunction with the exhaust device 3.

[0027] Since the supply air flow A1 blows out from three directions, namely the back side, the left side, and the right side, excluding the front side, when the user of the cooking device 84 stands in front for cooking, it is difficult for the supply air flow A1 to hit the hands, and the possibility of causing discomfort during cooking is low. Also, the air in the underfloor space is often warmer than the outside air in winter and cooler in summer. Therefore, even if the air in the underfloor space enters the air-conditioned room, the disturbance of the room air conditioning is small, and even if the supply air flow A1 hits the hands of the user of the cooking device 84, discomfort can be reduced. From this, a ventilation system can be obtained that ventilates with a range hood without causing discomfort to the occupants and the cook.

[0028] Also, the first supply air flow A1a flows toward the back side of the hood 36 of the exhaust device 3, the second supply air flow A1b flows toward the left side surface side of the hood 36 of the exhaust device 3, and the third supply air flow A1c flows toward the right side surface side of the hood 3 6. In this case, the steam, oil fumes, etc. (hereinafter referred to as "oil fumes, etc. S") generated from the cooking utensil 86 can be efficiently induced into the exhaust device 3 by being entrained. Also, even in the case of an IH cooker that is less likely to generate an updraft compared to a gas stove, since the supply air flow A1 pushes up the oil fumes, etc. S upward in the same way as an updraft, the hood 36 of the exhaust device 3 described later can be arranged at a higher position compared to the case where there is no supply air flow A1. Therefore, an effect of improving the construction freedom with respect to the installation height of the exhaust device 3 can be expected.

[0029] Referring to FIGS. 1 and 2, the exhaust device 3 will be described. The exhaust device 3 is provided above the cooking device installation portion 82. The exhaust device 3 sucks in the supply air flow A1 integrally with the surrounding air and exhausts it. Also, when performing heat cooking using cooking utensils 86 such as a pot or a frying pan on the cooking device 84, the exhaust device 3 sucks in the air containing the oil fumes, etc. S generated from the cooking utensils 86 and the supply air flow A1 integrally with the surrounding air and exhausts it as an exhaust flow A2. The exhaust device 3 may be referred to as a range hood.

[0030] The exhaust device 3 of this example includes a rectifying plate 32, an exhaust fan 42, a fan box 34, a hood 36, and a second control unit 52. The hood 36 has a suction port 33, a hood outlet 38, and a hood front portion 43. The hood 36 has a rectangular outer shape in plan view and is an inverted bowl-shaped member that is flat in the vertical direction and has an opening on its lower surface. The rectifying plate 32 has a flat plate-shaped rectangular shape and is provided above the cooking device installation portion 82 and inside the opening of the hood 36 or below the lower surface of the hood 36.

[0031] The suction port 33 is formed between the opening of the hood 36 and the rectifying plate 32 in the hood 36. In this example, the suction port 33 is formed in front of, behind, to the left of, and to the right of the rectifying plate 32. The suction port 33 sucks in the oil fume S and the supply air flow A1 generated from the cooking utensil 86 together with the surrounding air. The suction port 33 communicates with the internal space 41 partitioned by the rectifying plate 32 and the hood 36.

[0032] The hood outlet 38 is provided on the top surface of the hood 36. The hood outlet 38 communicates with the inlet side of the exhaust fan 42 via a duct (not shown).

[0033] The fan box 34 is installed on the upper part of the hood 36. Specifically, the fan box 34 is provided above the hood 36, that is, on the ceiling side, and on the rear side of the rectifying plate 32, that is, on the side opposite to the side where the user stands. The fan box 34 communicates with the internal space 41 through the hood outlet 38.

[0034] The exhaust fan 42 is arranged near the hood outlet 38 of the fan box 34. The exhaust fan 42 has a motor 37. The exhaust fan 42 rotates integrally with the motor 37 based on the control of the second control unit 52. When the exhaust fan 42 rotates, it sucks in air from the suction port 33 according to its rotation speed, and sends out the air sucked in from the suction port 33 to the outside through a duct (not shown) from the exhaust port 35. As the exhaust fan 42, a known fan mechanism such as a sirocco fan or a turbo fan can be adopted.

[0035] In the exhaust device 3, air containing fumes S and the supply air flow A1 are sucked in from the suction port 33 by the operation of the exhaust fan 42 and discharged from the exhaust port 35.

[0036] The front part 43 of the hood is arranged on the front side of the hood 36, that is, on the side where the user stands. An operation part 45 having a switch or the like for selecting the operation type of the exhaust device 3 is provided on the front part 43 of the hood. In the example of FIG. 2, the operation part 45 includes four buttons B0, B1, B2, and B3.

[0037] The second control part 52 is composed of a microcomputer or the like, and mainly controls the on / off of the exhaust air flow A2 and the exhaust air volume of the exhaust air flow A2 through the rotation of the motor 37. The second control part 52 controls the operation of the exhaust fan 42 according to the button selected by the operation part 45. In addition, the second control part 52 in this example communicates with the first control part 50 via wired or wireless communication means C. In particular, the second control part 52 transmits operation information regarding the selection of the buttons B0, B1, B2, and B3 that the operation part 45 has to the first control part 50 via the communication means C.

[0038] The cooperative operation of the ventilation system 100 configured as described above will be described. In order to reduce the imbalance between the exhaust air volume and the supply air volume, the supply device 2 operates in conjunction with the exhaust device 3 in the ventilation system 100. That is, when the exhaust device 3 is operating, the supply device 2 is also operated, and when the exhaust device 3 is stopped, the supply device 2 is also stopped.

[0039] In addition, when the exhaust air volume of the exhaust device 3 changes, if the supply air volume of the supply device 2 is constant, the imbalance between the exhaust air volume and the supply air volume increases. Therefore, in this embodiment, the supply air volume of the supply device 2 is controlled so as to reduce the imbalance between the exhaust air volume and the supply air volume in response to the change in the exhaust air volume of the exhaust device 3. In other words, the supply air volume of the supply device 2 is controlled so as to approach the exhaust air volume of the exhaust device 3.

[0040] ​An example of the interlocking operation will be described. When the push button of the operation unit 45 is selected by the user while the air supply device 2 and the exhaust device 3 are stopped, the second control unit 52 causes the exhaust fan 42 to generate an exhaust flow A2 with an air volume corresponding to the selected button. For example, when the button B1 is operated, the second control unit 52 generates a small air volume exhaust flow A2, when the button B2 is selected, it generates a medium air volume exhaust flow A2, when the button B3 is selected, it generates a large air volume exhaust flow A2, and when the button B0 is selected, it stops the exhaust fan 42 to stop the generation of the exhaust flow A2. Note that in terms of the air volume of the exhaust flow A2, the small air volume exhaust flow A2 < the medium air volume exhaust flow A2 < the large air volume exhaust flow A2.

[0041] The second control unit 52 controls the exhaust fan 42 and at the same time transmits operation information regarding the operation of the operation unit 45 to the first control unit 50 via the communication means C. This operation information includes, for example, information on whether any of the buttons B0, B1, B2, and B3 has been selected.

[0042] The first control unit 50 causes the air supply fan 28 to generate an air supply flow A1 with an air volume corresponding to the operation indicated by the operation information received from the second control unit 52. For example, when the operation information includes information that the button B1 has been selected, the first control unit 50 generates a small air volume air supply flow A1. Also, when the operation information includes information that the button B2 has been selected, the first control unit 50 generates a medium air volume air supply flow A1. Also, when the operation information includes information that the button B3 has been selected, the first control unit 50 generates a large air volume air supply flow A1. Also, when the operation information includes information that the button B0 has been selected, the first control unit 50 stops the air supply fan 28 to stop the generation of the air supply flow A1. Note that in terms of the air volume of the air supply flow A1, the small air volume air supply flow A1 < the medium air volume air supply flow A1 < the large air volume air supply flow A1.

[0043] That is, when the exhaust volume of the exhaust device 3 increases, the air supply volume of the air supply device 2 also increases so as to approach the increased exhaust volume. Also, when the exhaust volume decreases, the air supply volume also decreases so as to approach the decreased exhaust volume. Also, when the exhaust fan 42 is stopped, the air supply fan 28 is also stopped.

[0044] That is, the air supply amount of the air supply device 2 is configured to change in response to a change in the exhaust amount of the exhaust device 3.

[0045] By operating in this manner, the air supply amount of the air supply device 2 changes (increases or decreases) in response to a change (increase or decrease) in the exhaust amount of the exhaust device 3, so that the imbalance between the exhaust amount and the air supply amount is reduced.

[0046] The first blowing nozzle 24a is connected to the tip side of the first transport duct 26a and is a linear nozzle extending in the left-right direction of the cooking device installation portion 82. As shown in FIG. 1, the first blowing nozzle 24a opens upward and blows out the first air supply flow A1a upward. For this reason, the first air supply flow A1a blown out from the first blowing nozzle 24a forms an air curtain that is thin in the front and rear and wide in the left and right.

[0047] The second blowing nozzle 24b is connected to the tip side of the second transport duct 26b and is a linear nozzle extending in the front-rear direction of the cooking device installation portion 82. As shown in FIG. 1, the second blowing nozzle 24b opens upward and blows out the second air supply flow A1b upward. For this reason, the second air supply flow A1b blown out from the second blowing nozzle 24b forms an air curtain that is thin in the left and right and wide in the front and rear.

[0048] The third blowing nozzle 24c is connected to the tip side of the third transport duct 26c and is a linear nozzle extending in the front-rear direction of the cooking device installation portion 82. As shown in FIG. 1, the third blowing nozzle 24c opens upward and blows out the third air supply flow A1c upward. For this reason, the third air supply flow A1c blown out from the third blowing nozzle 24c forms an air curtain that is thin in the left and right and wide in the front and rear.

[0049] In plan view, the end portions on the back side of the second blowing nozzle 24b and the third blowing nozzle 24c are in contact with the first blowing nozzle 24a.

[0050] That is, the blowing nozzle 24 includes a first blowing nozzle 24a, a second blowing nozzle 24b, and a third blowing nozzle 24c. The first blowing nozzle 24a is provided behind the cooking device installation part 82 and is a linear nozzle extending in the left-right direction of the cooking device installation part 82. The second blowing nozzle 24b is provided to the left of the cooking device installation part 82 and is a linear nozzle extending in the front-rear direction of the cooking device installation part 82. The third blowing nozzle 24c is provided to the right of the cooking device installation part 82 and is a linear nozzle extending in the front-rear direction of the cooking device installation part 82. The ends of the first blowing nozzle 24a, the second blowing nozzle 24b, and the third blowing nozzle 24c are connected without gaps, and the supply air flow A1 is configured to form an air curtain.

[0051] In order to reduce the outflow amount of the oil fume S flowing out into the space such as a living room, it is desirable that the oil fume S is sucked into the exhaust device 3 without being dispersed around the cooking device installation part 82. If there is a gap between the first supply air flow A1a, the second supply air flow A1b, and the third supply air flow A1c, the oil fume S may be dispersed around the cooking device installation part 82 and may not be sucked into the exhaust device 3. In this embodiment, in a plan view, the end portions on the back side of the second blowing nozzle 24b and the third blowing nozzle 24c are in contact with the first blowing nozzle 24a. Thereby, an air curtain in a U-shape without gaps can be formed, and the oil fume S is sucked into the exhaust device 3 without being dispersed around. Thus, a ventilation system capable of more accurately collecting the steam, oil fume, etc. generated from the cooking utensils can be obtained. Further, as shown in FIG. 2, the left-right dimension of the first blowing nozzle 24a is larger than the left-right dimension of the cooking device 84, the front-rear dimension of the second blowing nozzle 24b is larger than the front-rear dimension of the cooking device 84, and the front-rear dimension of the third blowing nozzle 24c is larger than the front-rear dimension of the cooking device 84. Thereby, an effect of reducing the outflow amount of the oil fume S or the like flowing into the space such as the living room on the back side, the left side, and the right side of the cooking device installation portion 82 and the cooking device 84 can be expected. Further, as shown in FIG. 2, the left-right dimension of the first blowing nozzle 24a is smaller than the left-right dimension of the cooking device installation portion 82, the front-rear dimension of the second blowing nozzle 24b is smaller than the front-rear dimension of the cooking device installation portion 82, and the front-rear dimension of the third blowing nozzle 24c is smaller than the front-rear dimension of the cooking device installation portion 82. Thereby, since the blowing nozzle 24 protrudes from the left-right and front-rear directions of the cooking device installation portion 82, an effect of reducing the possibility that the blowing nozzle 24 becomes a noise in appearance (the appearance is impaired) can be expected.

[0052] FIG. 3 is a top view showing the damper mechanism of the ventilation system 100. FIG. 4 is a top view showing the cooking device installation portion and the cooking device of the ventilation system 100.

[0053] As shown in FIG. 3, it is desirable that the transport duct 26 is provided with a damper mechanism 60 for adjusting the amount of air transported to each of the first transport duct 26a, the second transport duct 26b, and the third transport duct 26c.

[0054] As shown in FIG. 4, in this type of cooking device 84, it is common that there are three cooking locations 85 for installing cooking utensils 86 such as pans and frying pans on the cooking device 84. As shown in FIG. 4, the arrangement is symmetric about the front side in two places and one place on the front center line on the back side. When performing heat cooking using the cooking utensil 86 on the cooking device 84, since the amount of oil fume S or the like generated from the three cooking utensils 86 varies depending on the cooking content, if the air volume flowing through the first transport duct 26a, the second transport duct 26b, and the third transport duct 26c is the same, the sufficient effect as an air curtain cannot be exhibited, and problems such as a decrease in the collection efficiency of the oil fume S or the like occur.

[0055] The damper mechanism 60 is provided near each of the inlets branched into three of the transport ducts 26. The damper mechanism 60 includes a first damper 60a that can be opened and closed, a second damper 60b, and a third damper 60c. By adjusting the degree of opening and closing of the first damper 60a, the second damper 60b, and the third damper 60c, the amount of air (air volume) transported to each of the first transport duct 26a, the second transport duct 26b, and the third transport duct 26c can be adjusted. For example, the air volume to the first transport duct 26a is set to a small air volume, the air volume flowing through the second transport duct 26b is set to a medium air volume, and the air volume flowing through the third transport duct 26c is set to a large air volume. Note that in terms of the air volume of the transport duct 26, the small air volume < the medium air volume < the large air volume. Further, the operation of the damper mechanism is controlled by the third control unit 54.

[0056] The third control unit 54 controls the opening and closing of the damper mechanism 60 through the operating status of the cooking device 84, the firepower operation, etc. For example, when only the right side on the front side of the cooking device 84 is operating, the damper mechanism 60 is opened and closed so as to increase the air volume ratio flowing through the third transport duct 26c. Further, when the cooking device 84 stops, the damper mechanism 60 is opened and closed so that the air volume ratios of the first transport duct 26a, the second transport duct 26b, and the third transport duct 26c become equal.

[0057] That is, the air supply device 2 includes a transport duct 26 that transports air from the air supply fan 28 to the blowing nozzles 24. The transport duct 26 branches into a first transport duct 26a, a second transport duct 26b, and a third transport duct 26c on the downstream side of the air supply fan 28. The first transport duct 26a transports air to the first blowing nozzle 24a, the second transport duct 26b transports air to the second blowing nozzle 24b, and the third transport duct 26c transports air to the third blowing nozzle 24c. The damper mechanism 60 that adjusts the amount of air transported to each of the first transport duct 26a, the second transport duct 26b, and the third transport duct 26c is provided, and the operation of the damper mechanism 60 is controlled by the third control unit 54.

[0058] That is, by adjusting the ratio of the air conveyance amounts (air volumes) to the first conveyance duct 26a, the second conveyance duct 26b, and the third conveyance duct 26c respectively, the air volume ratios of the first air supply flow A1a, the second air supply flow A1b, and the third air supply flow A1c blown out from the first blowing nozzle 24a, the second blowing nozzle 24b, and the third blowing nozzle 24c also change in conjunction. Thus, by providing the damper mechanism 60, it becomes possible to form an air curtain in which the air volume ratio changes according to the cooking content and the usage status of the cooking apparatus, and an effect of reducing the outflow amount of the oil fume S and the like flowing out into a space such as a living room can be expected. From this, a ventilation system capable of more accurately collecting the steam, oil fume, and the like generated from the cooking utensils can be obtained.

[0059] The third control unit 54 is incorporated in the cooking apparatus 84 or the cooking apparatus installation unit 82, and includes a determination unit 55 and an instruction unit 56.

[0060] The determination unit 55 determines which cooking location 85 on the cooking apparatus 84 is in operation, and determines the heating power of the cooking location 85, and transmits the determination result to the instruction unit 56.

[0061] The instruction unit 56 is connected to the damper mechanism 60 by wired or wireless communication means D, determines the degree of opening and closing of each of the first damper 60a, the second damper 60b, and the third damper 60c from the determination result sent from the determination unit 55, and operates the damper mechanism 60 according to the determined result.

[0062] That is, a plurality of cooking apparatuses 84 such as a gas stove and an IH stove are incorporated in the cooking apparatus installation unit 82, and the third control unit 54 is incorporated in the cooking apparatus 84 or the cooking apparatus installation unit 82, and includes a determination unit 55 that determines the operating status of the cooking apparatus 84, and an instruction unit 56 that instructs the operation of the damper mechanism 60 based on the determination result of the determination unit 55.

[0063] With the above configuration, according to the content cooked by the user of the cooking device 84, the air volume ratio flowing into the first conveying duct 26a, the second conveying duct 26b, and the third conveying duct 26c is automatically adjusted, and the first air supply flow A1a, the second air supply flow A1b, and the third air supply flow A1c blown out from the first blowing nozzle 24a, the second blowing nozzle 24b, and the third blowing nozzle 24c also change in conjunction. In this way, by providing the damper mechanism 60, an air curtain with an air volume ratio according to the cooking content or the like is formed, and an effect of reducing the outflow amount of the oil fume S flowing out into a space such as a living room can be expected. From this, a ventilation system capable of more accurately collecting the steam, oil fume, etc. generated from the cooking utensils can be obtained.

[0064] (Embodiment 2) FIG. 5 is a cross-sectional view of the ventilation system according to Embodiment 2 of the present invention. For the components similar to those in Embodiment 1, the same reference numerals are given, and the detailed description thereof is omitted. The difference from Embodiment 1 is the configuration of the third control unit.

[0065] The third control unit 90 includes a heat detection means 91, a signal transmission means 92, a signal reception means 93, and an instruction unit 94.

[0066] The heat detection means 91 is provided in the exhaust device 3 and is an infrared sensor capable of analyzing the temperature distribution on the cooking device 84.

[0067] The signal transmission means 92 is provided in the exhaust device 3 and is a wireless device capable of transmitting the analysis result of the heat detection means 91 as a signal by wire or wirelessly.

[0068] The signal reception means 93 is provided in the air supply device 2 and is a communication device capable of receiving the analysis result of the heat detection means 91 transmitted from the signal transmission means 92 by a wired or wireless communication means (not shown).

[0069] The indicating unit 94 is provided in the air supply device 2. Based on the analysis results of the heat detection means 91 received by the signal receiving means 93, it determines the degree of opening and closing of the first damper 60a, the second damper 60b, and the third damper 60c, and operates the damper mechanism 60 according to the determined result.

[0070] An example of the operation of the damper mechanism 60 by the third control unit 90 is shown. For example, when only the right side on the front side of the cooking device 84 is operating and the temperature distribution on the right side becomes high, the heat detection means 91 analyzes the temperature distribution and transmits the analysis result to the signal transmission means 92. The signal transmission means 92 converts the analysis result into a signal and wirelessly transmits it to the signal receiving means 93. The signal receiving means 93 transmits the received signal to the indicating unit 94. The indicating unit 94 opens and closes the damper mechanism 60 so as to increase the air volume ratio flowing through the third conveying duct 26c based on the analysis result of the heat detection means 91 transmitted as a signal. When the cooking device 84 stops and the temperature distribution becomes uniform, the damper mechanism 60 is opened and closed so that the air volume ratios of the first conveying duct 26a, the second conveying duct 26b, and the third conveying duct 26c are in an equal state.

[0071] That is, the third control unit 90 includes the heat detection means 91 and the signal transmission means 92 provided in the exhaust device 3, and the signal receiving means 93 and the indicating unit 94 provided in the air supply device 2. The heat detection means 91 detects the temperature distribution of the cooking device 84 and sends the information of the detection result to the signal transmission means 92. The signal transmission means 92 converts the information sent from the heat detection means 91 into a signal and transmits it towards the signal receiving means 93. The signal receiving means 93 receives the signal transmitted from the signal transmission means 92, sends the information to the indicating unit 94, and the indicating unit instructs the operation of the damper mechanism 60 from the information.

[0072] With the above configuration, according to the content cooked by the user of the cooking device 84, the air volume ratio flowing into the first transfer duct 26a, the second transfer duct 26b, and the third transfer duct 26c is automatically adjusted, and the first air supply flow A1a, the second air supply flow A1b, and the third air supply flow A1c blown out from the first blowing nozzle 24a, the second blowing nozzle 24b, and the third blowing nozzle 24c also change in conjunction. In this way, by providing the damper mechanism 60, an air curtain with an air volume ratio according to the cooking content or the like is formed, and an effect of reducing the outflow amount of the oil fume S or the like flowing out into a space such as a living room can be expected. From this, a ventilation system capable of more accurately collecting the steam, oil fume, etc. generated from the cooking utensils can be obtained. Further, the third control unit 90 of the present embodiment is also beneficial in terms of the ease of introducing the ventilation system 100. Even if the cooking device installation part 82 and the cooking device 84 that have already been installed or are newly installed have a configuration in which the third control unit 54 of the first embodiment cannot be incorporated, the third control unit 90 of the present embodiment enables the introduction of the ventilation system 100 of the present invention, and a more easily introduced ventilation system can be obtained.

Industrial Applicability

[0073] The exhaust device according to the present disclosure can be used as a ventilation system including an air supply device and an exhaust device.

Explanation of Signs

[0074] 2 Air supply device 3 Exhaust device 20 Main body part 21 Filter 22 Suction port 23 Outlet 24 Blowing nozzle 24a First blowing nozzle 24b Second blowing nozzle 24c Third blowing nozzle 26 Transfer duct 26a First transfer duct 26b Second transfer duct 26c Third transfer duct 27 Motor 28 Air supply fan 29 Flange 32 Rectifying plate 33 Suction port 34 Fan box 35 Exhaust port 36 Hood 37 Motor 38 Hood outlet 41 Internal space 42 Exhaust fan 43 Hood front part 45 Operation part 50 First control unit 52 Second control unit 54 Third control unit 55 Judgment unit 56 Indication unit 60 Damper mechanism 60a First damper 60b Second damper 60c Third damper 80 Room 82 Cooking appliance installation part 84 Cooking appliance 85 Cooking location 86 Cooking utensils 88 Floor covering 90 Third control unit 91 Heat detection means 92 Signal transmission means 93 Signal reception means 94 Indication unit 100 Ventilation system A1 Air supply flow A1a First air supply flow A1b Second air supply flow A1c Third air supply flow A2 Exhaust flow B0 Button B1 Button B2 Button B3 Button C Communication means D Communication means S Oil fume, etc.

Claims

1. An air supply fan, an air supply device that blows out, as an air supply flow, the air sucked from the underfloor space by the air supply fan to the back side and both left and right side surfaces of the cooking device installation section, an exhaust device that is installed above the cooking device installation section, has an exhaust fan, and sucks and exhausts the air supply flow by the exhaust fan, wherein the air supply device operates in conjunction with the exhaust device, the air sucked from the underfloor space by the air supply fan is warmer than the outside air in winter and cooler than the outside air in summer, the exhaust device has a hood that opens downward, the air supply device has a blowout nozzle that opens upward to blow out the air supply flow, the blowout nozzle includes a first blowout nozzle, a second blowout nozzle, and a third blowout nozzle, the first blowout nozzle is a linear nozzle provided behind the cooking device installation section and extending in the left-right direction of the cooking device installation section, the second blowout nozzle is a linear nozzle provided in the left direction of the cooking device installation section and extending in the front-rear direction of the cooking device installation section, the third blowout nozzle is a linear nozzle provided in the right direction of the cooking device installation section and extending in the front-rear direction of the cooking device installation section, the air supply device includes a conveyance duct that conveys air from the air supply fan to the blowout nozzle, the conveyance duct branches into a first conveyance duct, a second conveyance duct, and a third conveyance duct on the downstream side of the air supply fan, the first conveyance duct conveys air to the first blowout nozzle, the second conveyance duct conveys air to the second blowout nozzle, the third conveyance duct conveys air to the third blowout nozzle, and a damper mechanism that adjusts the amount of air conveyed to each of the first conveyance duct, the second conveyance duct, and the third conveyance duct, wherein the operation of the damper mechanism is controlled by a third control unit. A ventilation system 。

2. The first blowout nozzle, the second blowout nozzle, and the third blowout nozzle are connected at their ends without gaps, and the air supply flow forms an air curtain. The ventilation system according to claim 1.

3. A plurality of cooking devices such as a gas stove and an IH stove are incorporated in the cooking device installation section, the third control unit, is incorporated in the cooking device or the cooking device installation section, and a determination unit that determines the operating status of the cooking device The ventilation system according to claim 1, further comprising an instruction unit that instructs the operation of the damper mechanism based on the determination result of the determination unit.

4. A plurality of cooking devices such as a gas stove and an IH stove are incorporated in the cooking device installation section, The third control unit, thermal detection means and signal transmission means provided in the exhaust device, signal reception means and an instruction unit provided in the air supply device, comprising: The thermal detection means detects the temperature distribution of the cooking device and sends information on the detection result to the signal transmission means, The signal transmission means converts the information sent from the thermal detection means into a signal and transmits it toward the signal reception means, The signal reception means receives the signal transmitted from the signal transmission means and sends the information to the instruction unit, The ventilation system according to claim 1, wherein the instruction unit instructs the operation of the damper mechanism from the information.

5. The ventilation system according to any one of claims 1 to 4, wherein the air supply amount of the air supply device changes corresponding to a change in the exhaust amount of the exhaust device.

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