WO2022190625A1 - Range hood intake/exhaust device - Google Patents

Range hood intake/exhaust device Download PDF

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Publication number
WO2022190625A1
WO2022190625A1 PCT/JP2022/001161 JP2022001161W WO2022190625A1 WO 2022190625 A1 WO2022190625 A1 WO 2022190625A1 JP 2022001161 W JP2022001161 W JP 2022001161W WO 2022190625 A1 WO2022190625 A1 WO 2022190625A1
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exhaust
intake
cylinder
air
range hood
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PCT/JP2022/001161
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French (fr)
Japanese (ja)
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明彦 山口
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明彦 山口
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Publication of WO2022190625A1 publication Critical patent/WO2022190625A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit

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  • the present invention relates to a range hood, and more particularly to an intake and exhaust device that sucks gas around the range hood and discharges it to the outside air.
  • a range hood is provided with an exhaust fan in the middle of an exhaust pipe provided to communicate between the indoor and outdoor areas, and the exhaust fan creates a pressure difference between the downstream side and the upstream side. , the air in the room is sucked into the exhaust pipe and exhausted to the outside.
  • the sucked indoor air is passed through the blower fan.
  • the indoor air that is sucked contains oil generated during cooking, and the oil-laden air is sucked and exhausted by an exhaust fan.
  • the present inventor has proposed an intake cylinder communicating with the indoor space, an outer cylinder that covers the downstream end of the intake cylinder while forming an annular gap, and an exhaust compressed air that is fed into the gap.
  • a cooker hood configured with a blower fan (Patent Document 1).
  • This technology forms a negative pressure area in front of the intake cylinder by injecting compressed air for exhaust from an annular gap toward the front of the exhaust side end of the intake cylinder. The air inside is sucked and sent into the outer cylinder to be exhausted to the outside of the room.
  • the present invention has been made based on the above-mentioned knowledge, and provides a range hood intake and exhaust device that can improve exhaust efficiency by minimizing the flow in the direction opposite to the suction direction generated at the edge of the intake cylinder.
  • the problem to be solved is to provide
  • the range hood intake and exhaust system of the present invention comprises an intake cylinder communicating with a space around the range hood, and an annular airtight air passage around the intake cylinder. and a blower for supplying the compressed air into the air passage, wherein the downstream end of the intake pipe is separated from the exhaust pipe over the entire circumference.
  • an annular ejection port communicating with the inside of the exhaust pipe is formed in the air passage, and the downstream end of the intake pipe is formed to gradually approach the inner wall of the exhaust pipe over the entire circumference.
  • An annular constricted portion having the ejection port as a discharge portion is formed, and the constricted portion is provided with a baffle plate for guiding the compressed air supplied to the air passage to the ejection port.
  • the compressed air sent into the air passage is moved so as to circulate in the air passage around the outer circumference of the intake cylinder, and is moved toward the ejection port through the constricted portion. Then, it is ejected along the inner wall of the exhaust pipe from this ejection port.
  • the compressed air is accelerated at the throttle and ejected along the inner wall of the exhaust pipe from the ejection opening, thereby forming a negative pressure region in front of the intake cylinder.
  • the compressed air moving toward the ejection port is guided by the air guide plate along the axial direction of the air supply pipe and the exhaust pipe, and is ejected so as to be substantially orthogonal to the edge of the ejection port.
  • a plurality of the baffle plates can be provided along the spout.
  • the compressed air sent into the air passage is guided in a direction perpendicular to the edge of the jet port at a plurality of locations around the intake cylinder, and the rectification effect produced thereby is achieved around the intake cylinder. It can be produced uniformly.
  • the baffle plate be provided substantially along the central axis of the exhaust pipe and the intake pipe.
  • the exhaust efficiency can be improved by minimizing the flow in the direction opposite to the suction direction generated at the edge of the intake cylinder.
  • FIG. 1 is an external perspective view showing an embodiment of the present invention
  • FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention
  • FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention
  • FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention
  • reference numeral 1 indicates a range hood to which the air intake and exhaust system according to the present embodiment is applied
  • reference numeral 2 indicates the air intake and exhaust system of the present embodiment.
  • the cooker hood 1 includes a base 3 formed with an outside air suction port 3a. It has been incorporated.
  • the intake/exhaust device 2 of the present embodiment includes an intake cylinder 4 communicating with a space around the range hood 1, and an annular airtight air blower around the intake cylinder 4. Equipped with an exhaust pipe 5 that forms and surrounds a passage A, and a blower 6 that supplies compressed air into the air blowing passage A, and the downstream end of the intake pipe 4 is separated from the exhaust pipe 5 over the entire circumference.
  • an annular ejection port B communicating with the inside of the exhaust pipe 5 is formed in the air passage A, and the downstream end of the intake pipe 4 gradually approaches the inner wall of the exhaust pipe 5 over the entire circumference.
  • an annular constricted portion C having the ejection port B as a discharge portion is formed. is provided.
  • a plurality of baffle plates 7 are provided along the jet port B (see FIG. 3), and are provided along the central axes of the intake cylinder 4 and the exhaust cylinder 5 .
  • a filter 8 formed with a large number of through holes 8a is detachably attached to the base 3 so as to cover the outside air suction port 3a.
  • the compressed air sent into the air passage A by the activation of the air blower 6 is blown as shown in FIG. It is moved to circulate around the outer periphery of the intake cylinder 4 in the path A, and is moved toward the ejection port B through the constricted portion C, as shown in (b) in FIG. B is ejected along the inner wall of the exhaust pipe 5 (see FIG. 3).
  • the compressed air is accelerated at the throttle portion C and ejected along the inner wall of the exhaust cylinder 5 from the ejection port B, thereby causing the pressure P2 in front of the intake cylinder 4 as shown in FIG. A negative pressure region is created.
  • the pressure P2 in this negative pressure area is much lower than the air pressure P1 outside the cooker hood 1.
  • the compressed air moving toward the ejection port B is guided by the air guide plate 7 along the axial direction of the air supply pipe and the four exhaust pipes 5 so as to be substantially perpendicular to the edge of the ejection port B. It is ejected.
  • the compressed air sent into the air passage A is directed at a plurality of locations around the intake cylinder 4 in a direction perpendicular to the edge of the jet port B. , and the rectifying action exerted thereby can be uniformly generated around the intake cylinder 4 . As a result, the exhaust efficiency of the range hood 1 can be significantly improved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Abstract

Provided is a range hood intake/exhaust device capable of achieving an improvement in exhaust efficiency by minimizing the flow in the opposite direction of the suction direction that occurs at the edge of an intake cylinder.　The present invention is characterized by comprising: an intake cylinder (4) that communicates with the space around a range hood; an exhaust cylinder (5) that forms an annular airtight air passage (A) around the intake cylinder and surrounds the intake cylinder; and a blower (6) that supplies the compressed air into the air passage. The downstream end of the intake cylinder is separated from the exhaust cylinder over the entire circumference, thereby forming an annular jet outlet (B) in the air passage, the annular jet outlet communicating with the inside of the exhaust cylinder. The downstream end of the intake cylinder is formed so as to gradually approach the inner wall of the exhaust cylinder over the entire circumference, thereby forming an annular throttle portion (C) with the jet outlet as a discharge portion, and a wind guide plate (7) that guides the compressed air supplied to the air passage to the jet outlet is disposed in the throttle portion.

Description

レンジフードの吸排気装置Range hood intake and exhaust system
　本発明は、レンジフードに係わり、特に、レンジフード回りの気体を吸引して外気へ排出する吸排気装置に関する。 The present invention relates to a range hood, and more particularly to an intake and exhaust device that sucks gas around the range hood and discharges it to the outside air.
　一般に、レンジフードは、室内と室外とを連通するように設けられた排気筒の途中に排気ファンを設け、この排気ファンによって、その下流側と上流側との間に圧力差を生じさせることにより、排気筒内に室内の空気を吸引するとともに室外へ排気するようにしている。 In general, a range hood is provided with an exhaust fan in the middle of an exhaust pipe provided to communicate between the indoor and outdoor areas, and the exhaust fan creates a pressure difference between the downstream side and the upstream side. , the air in the room is sucked into the exhaust pipe and exhausted to the outside.
　このようなレンジフードにおいては、吸引された室内の空気が送風ファンを通過させられる。 In such a range hood, the sucked indoor air is passed through the blower fan.
　ここで、キッチンでの使用を目的としたレンジフードにおいては、吸引される室内の空気に調理中に発生する油が含まれて、この油を含んだ空気が排気ファンによって吸引排気される。 Here, in range hoods intended for use in kitchens, the indoor air that is sucked contains oil generated during cooking, and the oil-laden air is sucked and exhausted by an exhaust fan.
　このように油を含んだ空気が排気ファンを通過させられると、油が排気ファンに付着して汚れの原因となり、また、付着した油によって排気ファンや排気筒内壁に埃が捕獲されて蓄積されることにより、排気筒に詰まりを生じさせ、あるいは、排気ファンの排気効率を低下させてしまうことがある。 When oil-laden air is passed through the exhaust fan in this way, the oil adheres to the exhaust fan and causes contamination. As a result, the exhaust pipe may be clogged, or the exhaust efficiency of the exhaust fan may be reduced.
　そこで、本発明者は、室内空間に連通させられた吸気筒と、この吸気筒の下流側の端部を、環状の隙間を形成しつつ覆う外筒と、隙間に排気用の圧縮空気を送り込む送風ファンとによって構成したレンジフードを提案した（特許文献１）。 Therefore, the present inventor has proposed an intake cylinder communicating with the indoor space, an outer cylinder that covers the downstream end of the intake cylinder while forming an annular gap, and an exhaust compressed air that is fed into the gap. We have proposed a cooker hood configured with a blower fan (Patent Document 1).
　この技術は、排気用の圧縮空気を環状の隙間から吸気筒の排気側端部の前方に向けて噴射することにより、吸気筒の前方に負圧領域を形成し、この負圧により、吸気筒内の空気を吸引するとともに外筒内に送り込んで室外へ排気するようにしたものである。 This technology forms a negative pressure area in front of the intake cylinder by injecting compressed air for exhaust from an annular gap toward the front of the exhaust side end of the intake cylinder. The air inside is sucked and sent into the outer cylinder to be exhausted to the outside of the room.
　これによって、排気ファンを空気の排出経路から排除してその汚染を防止するようにしたものである。 As a result, the exhaust fan is removed from the air discharge path to prevent contamination.
特許第６６８７９５６号公報Japanese Patent No. 6687956
　前述した先の出願において、排気量を増加させるための諸改善を行なった結果、上記構成では排気量増加の効果が頭打ちであるとの結果となった。 In the previous application mentioned above, as a result of making various improvements to increase the displacement, the result was that the effect of increasing the displacement had reached a plateau with the above configuration.
　そして、その原因が、環状の隙間から吸気筒の排気側端部の前方に向けて噴射する圧縮空気が吸気筒の縁部において乱れて、吸引方向と逆向きの流れが生じ、この逆向きの流れが、吸気筒からの空気の吸引量を阻害していることが、排気量の増加を阻害していることを知見した。 The reason for this is that the compressed air injected from the annular gap toward the front of the exhaust side end of the intake cylinder is disturbed at the edge of the intake cylinder, causing a flow in the direction opposite to the intake direction. It has been found that the flow inhibits the amount of air sucked from the intake cylinder, which inhibits the increase in displacement.
　本発明は、前述した知見に基づきなされたもので、吸気筒の縁部において生じる吸引方向と逆向きの流れを極力なくすことにより、排気効率の向上を図ることができるレンジフードの吸排気装置を提供することを解決すべき課題とする。 The present invention has been made based on the above-mentioned knowledge, and provides a range hood intake and exhaust device that can improve exhaust efficiency by minimizing the flow in the direction opposite to the suction direction generated at the edge of the intake cylinder. The problem to be solved is to provide
　本発明のレンジフードの吸排気装置は、前述した課題を解決するために、レンジフード回りの空間に連通された吸気筒と、この吸気筒を、この吸気筒の周りに環状の気密な送風路を形成して取り囲む排気筒と、前記送風路内にその圧縮空気を供給する送風機とを備え、前記吸気筒の下流側の端部が全周に亘って前記排気筒から離間させられていることにより、前記送風路に前記排気筒内へ連通された環状の噴出口が形成され、前記吸気筒の下流側の端部が全周に亘って漸次前記排気筒の内壁に近づくように形成されていることにより、前記噴出口を吐出部とした環状の絞り部が形成され、この絞り部に、前記送風路に供給される圧縮空気を前記噴出口へ導く導風板が設けられていることを特徴とする。 In order to solve the above-mentioned problems, the range hood intake and exhaust system of the present invention comprises an intake cylinder communicating with a space around the range hood, and an annular airtight air passage around the intake cylinder. and a blower for supplying the compressed air into the air passage, wherein the downstream end of the intake pipe is separated from the exhaust pipe over the entire circumference. As a result, an annular ejection port communicating with the inside of the exhaust pipe is formed in the air passage, and the downstream end of the intake pipe is formed to gradually approach the inner wall of the exhaust pipe over the entire circumference. An annular constricted portion having the ejection port as a discharge portion is formed, and the constricted portion is provided with a baffle plate for guiding the compressed air supplied to the air passage to the ejection port. Characterized by
　このような構成とすることにより、送風路に送り込まれた圧縮空気は、送風路内を吸気筒の外周周りを循環するように移動させられるとともに、絞り部を経て噴出口へ向けて移動させられて、この噴出口から排気筒の内壁に沿うように噴出される。 With such a configuration, the compressed air sent into the air passage is moved so as to circulate in the air passage around the outer circumference of the intake cylinder, and is moved toward the ejection port through the constricted portion. Then, it is ejected along the inner wall of the exhaust pipe from this ejection port.
　そして、圧縮空気は、絞り部において加速されつつ噴出口から排気筒の内壁に沿うように噴出され、これによって、吸気筒の前方に負圧領域が形成される。 The compressed air is accelerated at the throttle and ejected along the inner wall of the exhaust pipe from the ejection opening, thereby forming a negative pressure region in front of the intake cylinder.
　このように、圧縮空気が排気筒内の吸気筒の前方に負圧領域が形成されると、この負圧により、吸気筒内の空気が排気筒内に吸引されて、噴出口から噴出される圧縮空気とともに排気筒を経て排気される。 In this way, when the compressed air forms a negative pressure area in front of the intake cylinder in the exhaust cylinder, the air in the intake cylinder is sucked into the exhaust cylinder due to this negative pressure and is ejected from the ejection port. It is exhausted through an exhaust pipe together with compressed air.
　ここで、噴出口へ向けて移動する圧縮空気は、導風板によって、給気管および排気筒の軸線方向に沿うように誘導され、噴出口の縁部とほぼ直交するように噴出される。 Here, the compressed air moving toward the ejection port is guided by the air guide plate along the axial direction of the air supply pipe and the exhaust pipe, and is ejected so as to be substantially orthogonal to the edge of the ejection port.
　このように、圧縮空気が噴出口の縁部とほぼ直交するように噴出されると、噴出口へ送り込まれる圧縮空気が整流されて噴出口縁部の内側に回り込むことが抑制される。 In this way, when the compressed air is ejected so as to be substantially orthogonal to the edge of the ejection port, the compressed air sent to the ejection port is rectified and prevented from flowing inside the edge of the ejection port.
　したがって、噴出口縁部の内側において、吸気筒内の空気の流れに逆行する空気の流れの発生が抑制され、吸気筒から排気筒へ吸引される空気の流れが円滑に行なわれる。
　この結果、レンジフード外側の空気の排出効率が向上する。 Therefore, the occurrence of an air flow that runs counter to the air flow in the intake cylinder is suppressed inside the ejection port edge, and the air that is sucked from the intake cylinder to the exhaust cylinder flows smoothly.
As a result, the efficiency of discharging the air outside the range hood is improved.
　前記導風板は、前記噴出口に沿って複数設けることができる。 A plurality of the baffle plates can be provided along the spout.
　このような構成とすることにより、送風路に送り込まれる圧縮空気を吸気筒周りの複数箇所において噴出口の縁部と直交する方向に誘導して、これによって奏される整流作用を吸気筒周りにおいて均一に生じさせることができる。 With such a configuration, the compressed air sent into the air passage is guided in a direction perpendicular to the edge of the jet port at a plurality of locations around the intake cylinder, and the rectification effect produced thereby is achieved around the intake cylinder. It can be produced uniformly.
　したがって、前記導風板は、排気筒や吸気筒の中心軸線にほぼ沿うように設けることが望ましい。 Therefore, it is desirable that the baffle plate be provided substantially along the central axis of the exhaust pipe and the intake pipe.
　本発明のレンジフードの吸排気装置によれば、吸気筒の縁部において生じる吸引方向と逆向きの流れを極力なくすことにより、排気効率の向上を図ることができる。 According to the range hood intake and exhaust device of the present invention, the exhaust efficiency can be improved by minimizing the flow in the direction opposite to the suction direction generated at the edge of the intake cylinder.
本発明の一実施形態を示す分解斜視図である。It is an exploded perspective view showing one embodiment of the present invention. 本発明の一実施形態を示す外観斜視図である。1 is an external perspective view showing an embodiment of the present invention; FIG. 本発明の一実施形態を示す要部の縦断面図である。1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention; FIG. 本発明の一実施形態を示す要部の縦断面図である。1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention; FIG.
　以下、本発明の一実施形態を、図面を参照して説明する。
　これらの図において、符号１は、本実施形態に係わる吸排気装置が適用されたレンジフードを示し、符号２は本実施形態の吸排気装置を示す。 An embodiment of the present invention will be described below with reference to the drawings.
In these figures, reference numeral 1 indicates a range hood to which the air intake and exhaust system according to the present embodiment is applied, and reference numeral 2 indicates the air intake and exhaust system of the present embodiment.
　前記レンジフード１は、図１および図３に示すように、外気吸引口３ａが形成された基体３を備え、この基体３に外気吸引口３ａを覆うように本実施形態の吸排気装置２が組み込まれている。 As shown in FIGS. 1 and 3, the cooker hood 1 includes a base 3 formed with an outside air suction port 3a. It has been incorporated.
　本実施形態の吸排気装置２は、図３に示すように、レンジフード１回りの空間に連通された吸気筒４と、この吸気筒４を、この吸気筒４の周りに環状の気密な送風路Ａを形成して取り囲む排気筒５と、送風路Ａ内に圧縮空気を供給する送風機６とを備え、吸気筒４の下流側の端部が全周に亘って排気筒５から離間させられていることにより、送風路Ａに排気筒５内へ連通された環状の噴出口Ｂが形成され、吸気筒４の下流側の端部が全周に亘って漸次排気筒５の内壁に近づくように形成されていることにより、噴出口Ｂを吐出部とした環状の絞り部Ｃが形成され、この絞り部Ｃに、送風路Ａに供給される圧縮空気を噴出口Ｂへ導く導風板７が設けられている構成となっている。 As shown in FIG. 3, the intake/exhaust device 2 of the present embodiment includes an intake cylinder 4 communicating with a space around the range hood 1, and an annular airtight air blower around the intake cylinder 4. Equipped with an exhaust pipe 5 that forms and surrounds a passage A, and a blower 6 that supplies compressed air into the air blowing passage A, and the downstream end of the intake pipe 4 is separated from the exhaust pipe 5 over the entire circumference. As a result, an annular ejection port B communicating with the inside of the exhaust pipe 5 is formed in the air passage A, and the downstream end of the intake pipe 4 gradually approaches the inner wall of the exhaust pipe 5 over the entire circumference. As a result, an annular constricted portion C having the ejection port B as a discharge portion is formed. is provided.
　本実施形態においては、導風板７が噴出口Ｂに沿って複数設けられており（図３参照）、かつ、吸気筒４および排気筒５の中心軸線に沿うように設けられている。 In this embodiment, a plurality of baffle plates 7 are provided along the jet port B (see FIG. 3), and are provided along the central axes of the intake cylinder 4 and the exhaust cylinder 5 .
　前記基体３には、外気吸引口３ａを覆うように多数の貫通孔８ａが形成されたフィルタ８が着脱可能に装着されている。 A filter 8 formed with a large number of through holes 8a is detachably attached to the base 3 so as to cover the outside air suction port 3a.
　このように構成された本実施形態のレンジフード１の吸排気装置２によれば、送風機６の起動により送風路Ａに送り込まれた圧縮空気は、図４に（イ）で示すように、送風路Ａ内を吸気筒４の外周周りを循環するように移動させられるとともに、図４に（ロ）で示すように、絞り部Ｃを経て噴出口Ｂへ向けて移動させられて、この噴出口Ｂから排気筒５の内壁に沿うように噴出される（図３参照）。 According to the intake and exhaust device 2 of the cooker hood 1 of the present embodiment configured in this way, the compressed air sent into the air passage A by the activation of the air blower 6 is blown as shown in FIG. It is moved to circulate around the outer periphery of the intake cylinder 4 in the path A, and is moved toward the ejection port B through the constricted portion C, as shown in (b) in FIG. B is ejected along the inner wall of the exhaust pipe 5 (see FIG. 3).
　そして、圧縮空気は、絞り部Ｃにおいて加速されつつ噴出口Ｂから排気筒５の内壁に沿うように噴出され、これによって、吸気筒４の前方に、図３に示すように、圧力Ｐ２で示す負圧領域が形成される。 The compressed air is accelerated at the throttle portion C and ejected along the inner wall of the exhaust cylinder 5 from the ejection port B, thereby causing the pressure P2 in front of the intake cylinder 4 as shown in FIG. A negative pressure region is created.
　この負圧領域の圧力Ｐ２は、レンジフード１の外側の空気圧Ｐ１よりも遙かに低い圧力となされる。 The pressure P2 in this negative pressure area is much lower than the air pressure P1 outside the cooker hood 1.
　このように、圧縮空気が排気筒５内の吸気筒４の前方に負圧領域が形成されると、この負圧により、吸気筒４内の空気が排気筒５内に吸引されるとともに、噴出口Ｂから噴出される圧縮空気とともに排気筒５を経て排気される。 In this way, when the compressed air forms a negative pressure area in front of the intake cylinder 4 in the exhaust cylinder 5, the air in the intake cylinder 4 is sucked into the exhaust cylinder 5 due to this negative pressure, and the air is injected into the exhaust cylinder 5. It is exhausted through the exhaust pipe 5 together with the compressed air jetted from the outlet B.
　ここで、噴出口Ｂへ向けて移動する圧縮空気は、導風板７によって、給気管および４排気筒５の軸線方向に沿うように誘導され、噴出口Ｂの縁部とほぼ直交するように噴出される。 Here, the compressed air moving toward the ejection port B is guided by the air guide plate 7 along the axial direction of the air supply pipe and the four exhaust pipes 5 so as to be substantially perpendicular to the edge of the ejection port B. It is ejected.
　このように、圧縮空気が噴出口Ｂの縁部とほぼ直交するように噴出されると、噴出口Ｂへ送り込まれる圧縮空気が整流されて噴出口Ｂ縁部の内側に回り込むことが抑制される。 In this way, when the compressed air is ejected so as to be substantially orthogonal to the edge of the ejection port B, the compressed air sent to the ejection port B is rectified and prevented from flowing inside the edge of the ejection port B. .
　したがって、噴出口Ｂ縁部の内側において、吸気筒４内の空気の流れに逆行する空気の流れの発生が抑制され、吸気筒４から排気筒５へ吸引される空気の流れが円滑に行なわれる。
　この結果、レンジフード外側の空気の排気効率が向上する。 Therefore, inside the edge of the ejection port B, the occurrence of an air flow that runs counter to the air flow in the intake cylinder 4 is suppressed, and the air that is sucked from the intake cylinder 4 to the exhaust cylinder 5 flows smoothly. .
As a result, the exhaust efficiency of the air outside the range hood is improved.
　ここで、導風板７が、噴出口Ｂに沿って複数設けられていることにより、送風路Ａに送り込まれる圧縮空気が吸気筒４周りの複数箇所において噴出口Ｂの縁部と直交する方向に誘導され、これによって奏される整流作用を吸気筒４周りにおいて均一に生じさせることができる。
　この結果、レンジフード１の排気効率を大幅に向上させることができる。 Here, since a plurality of air guide plates 7 are provided along the jet port B, the compressed air sent into the air passage A is directed at a plurality of locations around the intake cylinder 4 in a direction perpendicular to the edge of the jet port B. , and the rectifying action exerted thereby can be uniformly generated around the intake cylinder 4 .
As a result, the exhaust efficiency of the range hood 1 can be significantly improved.
　なお、前記実施形態において示した各構成部材の諸形状や寸法等は一例であって、設計要求等に基づき種々変更可能である。 It should be noted that the shapes, dimensions, etc., of the constituent members shown in the above embodiment are examples, and can be changed in various ways based on design requirements and the like.
１　レンジフード
２　吸排気装置
３　基体
３ａ　外気吸引口
４　吸気筒
５　排気筒
６　送風機
７　導風板
Ａ　送風路
Ｂ　噴出口
Ｃ　絞り部

  1 Cooker hood 2 Intake and exhaust device 3 Base 3a Outside air suction port 4 Intake cylinder 5 Exhaust cylinder 6 Air blower 7 Wind guide plate A Air blast path B Jet outlet C Throttle part

Claims (1)

  1. 　レンジフード回りの空間に連通された吸気筒と、この吸気筒を、この吸気筒の周りに環状の気密な送風路を形成して取り囲む排気筒と、前記送風路内に圧縮空気を供給する送風機とを備え、前記吸気筒の下流側の端部が全周に亘って前記排気筒から離間させられていることにより、前記送風路に前記排気筒内へ連通された環状の噴出口が形成され、前記吸気筒の下流側の端部が全周に亘って漸次前記排気筒の内壁に近づくように形成されていることにより、前記噴出口を吐出部とした環状の絞り部が形成され、この絞り部に、前記送風路に供給される圧縮空気を前記噴出口へ導く導風板が設けられ、この導風板が前記噴出口に沿って複数設けられているとともに、前記噴出口の縁部から前記排気筒の中心軸線に沿って設けられていることを特徴とするレンジフードの吸排気装置。

          An intake pipe communicated with a space around the range hood, an exhaust pipe surrounding the intake pipe by forming an annular airtight air passage around the air intake pipe, and a blower supplying compressed air into the air passage. and the downstream end of the intake cylinder is separated from the exhaust cylinder over the entire circumference, so that an annular ejection port communicating with the inside of the exhaust cylinder is formed in the blowing passage. , the downstream end of the intake cylinder is formed so as to gradually approach the inner wall of the exhaust cylinder over the entire circumference, thereby forming an annular restrictor having the ejection port as a discharge part. A baffle plate that guides the compressed air supplied to the air passage to the ejection port is provided in the narrowed portion. A range hood intake and exhaust device, characterized in that it is provided along the central axis of the exhaust pipe.
PCT/JP2022/001161 2021-03-11 2022-01-14 Range hood intake/exhaust device WO2022190625A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061612A (en) * 2014-07-16 2014-09-24 侯春景 Cooking fume extraction method and smoke exhaust ventilator manufactured by utilizing cooking fume extraction method
CN204115033U (en) * 2014-07-16 2015-01-21 侯春景 A kind of cooking fume removing machine
CN104296219A (en) * 2014-11-07 2015-01-21 郭军 Range hood with rectifying function
CN108758755A (en) * 2018-09-09 2018-11-06 王亮 A kind of novel environment friendly range hood driving oil smoke indirectly by wind turbine
JP2019167944A (en) * 2018-03-26 2019-10-03 東邦瓦斯株式会社 Blower device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202521782U (en) * 2011-10-11 2012-11-07 漆一伟 Air exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061612A (en) * 2014-07-16 2014-09-24 侯春景 Cooking fume extraction method and smoke exhaust ventilator manufactured by utilizing cooking fume extraction method
CN204115033U (en) * 2014-07-16 2015-01-21 侯春景 A kind of cooking fume removing machine
CN104296219A (en) * 2014-11-07 2015-01-21 郭军 Range hood with rectifying function
JP2019167944A (en) * 2018-03-26 2019-10-03 東邦瓦斯株式会社 Blower device
CN108758755A (en) * 2018-09-09 2018-11-06 王亮 A kind of novel environment friendly range hood driving oil smoke indirectly by wind turbine

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