JP2022144265A - air conditioner - Google Patents

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JP2022144265A
JP2022144265A JP2021045186A JP2021045186A JP2022144265A JP 2022144265 A JP2022144265 A JP 2022144265A JP 2021045186 A JP2021045186 A JP 2021045186A JP 2021045186 A JP2021045186 A JP 2021045186A JP 2022144265 A JP2022144265 A JP 2022144265A
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water
air
refrigerant
housing
temperature
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佳憲 河村
Yoshinori Kawamura
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Toshiba Lifestyle Products and Services Corp
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Toshiba Lifestyle Products and Services Corp
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Priority to JP2021045186A priority Critical patent/JP2022144265A/en
Priority to CN202210020625.9A priority patent/CN115111655A/en
Publication of JP2022144265A publication Critical patent/JP2022144265A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0076—Indoor units, e.g. fan coil units with means for purifying supplied air by electric means, e.g. ionisers or electrostatic separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

To provide an air conditioner which can perform sterilization treatment of an indoor space more effectively and inhibit drying of indoor air with a simple structure.SOLUTION: An air conditioner includes a housing, a fan, a photocatalytic filter, a water receiving part, and a light source as one example. The fan takes air outside the housing into a ventilation flue in the housing, causes the air to pass through a heat exchanger, and discharges the air to the outside of the housing. The photocatalytic filter is provided so as to allow passage of air in a part of the ventilation flue, includes a photocatalyst, and may contain water. The water receiving part may supply water to the photocatalyst filter. The light source may radiate ultraviolet light to the photocatalytic filter.SELECTED DRAWING: Figure 1

Description

本発明の実施形態は、空気調和装置に関する。 An embodiment of the present invention relates to an air conditioner.

従来、高電圧放電を用いて除菌効果を有する有効成分（例えば、ＯＨラジカルやオゾン等）を発生させて、温度調整済みの空気とともに室内に放出し、室内の除菌や消臭を行う空気調和装置が提案されている。また、放電部分に水分を供給して有効成分を含む過酸化水素を生成し温度調整済みの空気とともに放出させる空気調和装置が提案されている。 Conventionally, high-voltage discharge is used to generate active ingredients (for example, OH radicals, ozone, etc.) that have a sterilizing effect, and they are released into the room together with temperature-controlled air to sterilize and deodorize the room. Harmonizing devices have been proposed. Also, an air conditioner has been proposed in which moisture is supplied to a discharge portion to generate hydrogen peroxide containing an active ingredient, and the hydrogen peroxide is released together with temperature-controlled air.

特開２０１０－１９６９６０号公報JP 2010-196960 A

しかしながら、従来技術の場合、小形の放電部周囲に水分を供給して過酸化水素等を生成しているのにとどまり、室内の乾燥対策は十分に行われていないというのが現状である。特に、暖房運転するような冬季の場合、室内空気の乾燥程度が高い場合が多く、室内の除菌処理を行うとともに、室内空気の乾燥抑制ができれば、室内環境をより改善することが可能となり、有意義である。 However, in the case of the prior art, only water is supplied to the periphery of the small discharge section to generate hydrogen peroxide, etc., and the current situation is that sufficient countermeasures against dryness in the room have not been taken. Especially in the winter when the heating is operated, the degree of dryness of the indoor air is often high. Meaningful.

本発明が解決する課題の一例は、容易な構成で、より効率的に室内の除菌処理が行えるとともに、室内空気の乾燥抑制が可能な空気調和装置を提供することである。 One example of the problem to be solved by the present invention is to provide an air conditioner that can more efficiently sterilize indoor air and suppress drying of indoor air with a simple configuration.

本発明の一つの実施形態に係る空気調和装置は、ハウジングと、ファンと、光触媒フィルタと、水受け部と、光源と、を備える。ファンは、前記ハウジングの外部の空気を当該ハウジングの内部の通風路に取り入れ、熱交換器を通過させて前記ハウジングの外部に排出させる。光触媒フィルタは、前記通風路の一部で前記空気の通過を許容するように設けられ、光触媒を含む含水可能なフィルタである。水受け部は、前記光触媒フィルタに水を供給可能である。光源は、前記光触媒フィルタに紫外線光を照射可能である。 An air conditioner according to one embodiment of the present invention includes a housing, a fan, a photocatalyst filter, a water receiver, and a light source. The fan draws air from the outside of the housing into a ventilation passage inside the housing, passes the air through the heat exchanger, and exhausts the air to the outside of the housing. The photocatalyst filter is a water-retainable filter containing a photocatalyst, provided to allow passage of the air in a portion of the ventilation passage. The water receiver can supply water to the photocatalyst filter. The light source can irradiate the photocatalyst filter with ultraviolet light.

前記水受け部は、当該水受け部に供給される前記水に継続的に界面活性成分を供給可能な界面活性剤を保持可能である。 The water receiving portion can hold a surfactant capable of continuously supplying a surface active component to the water supplied to the water receiving portion.

また、前記ハウジングの前記空気の排出側に、少なくとも暖房運転時に前記ハウジングの内部を流れる空気から水を生成する水生成部が設けられてもよい。 A water generator may be provided on the air discharge side of the housing for generating water from the air flowing through the housing at least during heating operation.

また、前記水生成部は、前記熱交換器の下流側で冷媒の流れを第一の分流路と第二の分流路に分岐させる分岐部と、前記第一の分流路に設けられて前記冷媒の温度を結露水の発生可能温度以下まで低下させて前記水受け部に供給する結露水を生成する低温化部と、前記第二の分流路に設けられて前記低温化部の下流側で当該低温化部で低下した前記冷媒の温度を前記第二の分流路を流れる前記冷媒の温度に接近させて前記第二の分流路を流れる前記冷媒に合流させられるように加熱する再加熱部と、を含んでもよい。 In addition, the water generation section includes a branching section that branches the flow of the refrigerant into a first branched flow path and a second branched flow path on the downstream side of the heat exchanger, and a branching section that is provided in the first branched flow path and the refrigerant a temperature lowering unit that lowers the temperature of to a temperature at which condensed water can be generated or less to generate condensed water to be supplied to the water receiving unit; a reheating unit that brings the temperature of the refrigerant lowered in the low-temperature unit closer to the temperature of the refrigerant flowing through the second branch channel and heats the refrigerant so that it can join the refrigerant flowing through the second branch channel; may include

また、前記光源を挟んで、前記光触媒フィルタとは逆側で前記通風路の上流側の位置にオゾン発生部を備えてもよい。 Further, an ozone generator may be provided at a position opposite to the photocatalyst filter and upstream of the ventilation passage with the light source interposed therebetween.

以上の空気調和装置によれば、例えば、光触媒フィルタに紫外線光を照射するのみで、光触媒フィルタの表面に正孔（ホール）が形成され、光触媒フィルタに含浸された水の水酸化イオンから電子を奪い、酸化力の強いＯＨラジカルを生成する。このとき、光触媒フィルタには、充分な水が含浸可能なため、ＯＨラジカルを含む過酸化水素を十分に生成可能となる。その結果、容易な構成で通風路から排出される温度調整済みの空気に過酸化水素を乗せて室内に放出することが可能になり、室内の除菌効果の向上が図れる。また、通風路の途中に設けられる光触媒フィルタには、充分な水が含浸可能なため、空気中に十分な水分を放出可能である。その結果、室内の乾燥抑制に寄与することができる。 According to the air conditioner described above, for example, only by irradiating the photocatalyst filter with ultraviolet light, holes are formed on the surface of the photocatalyst filter, and electrons are removed from hydroxyl ions of the water impregnated in the photocatalyst filter. to generate OH radicals with strong oxidizing power. At this time, since the photocatalyst filter can be impregnated with sufficient water, hydrogen peroxide containing OH radicals can be generated sufficiently. As a result, with a simple structure, it is possible to put hydrogen peroxide on the temperature-adjusted air discharged from the ventilation passage and discharge it into the room, thereby improving the sterilization effect in the room. In addition, since the photocatalyst filter provided in the middle of the ventilation path can be impregnated with sufficient water, it is possible to release sufficient moisture into the air. As a result, it is possible to contribute to the suppression of dryness in the room.

図１は、実施形態に係る空気調和装置（室内機）の構成を示す例示的かつ模式的な断面図である。FIG. 1 is an exemplary and schematic cross-sectional view showing the configuration of an air conditioner (indoor unit) according to an embodiment. 図２は、光触媒を用いてＯＨラジカルを生成することを示す例示的かつ模式的な説明図である。FIG. 2 is an exemplary and schematic explanatory diagram showing generation of OH radicals using a photocatalyst. 図３は、実施形態に係る空気調和装置において、結露水を含浸した光触媒フィルタに紫外線光を照射し、ＯＨラジカルを含む過酸化水素を生成することを示す例示的かつ模式的な説明図である。FIG. 3 is an exemplary and schematic explanatory diagram showing that a photocatalyst filter impregnated with condensed water is irradiated with ultraviolet light to generate hydrogen peroxide containing OH radicals in the air conditioner according to the embodiment. . 図４は、実施形態に係る空気調和装置において、光触媒フィルタに含浸させる水に界面活性剤を添加し、加速度過酸化水素を生成することを示す例示的かつ模式的な説明図である。FIG. 4 is an exemplary and schematic explanatory diagram showing that a surfactant is added to water with which a photocatalyst filter is impregnated to generate accelerated hydrogen peroxide in the air conditioner according to the embodiment. 図５は、実施形態に係る空気調和装置において、暖房運転時に循環する冷媒を用いて結露水を生成するシステムを示す例示的かつ模式的な説明図である。FIG. 5 is an exemplary and schematic explanatory diagram showing a system for generating condensed water using refrigerant circulating during heating operation in the air conditioner according to the embodiment. 図６は、実施形態に係る空気調和装置において、循環する冷媒を用いて結露水を発生させることと、水生成に利用した冷媒を循環系に戻すシステムを示す例示的かつ模式的な説明図である。FIG. 6 is an exemplary and schematic explanatory view showing a system for generating condensed water using a circulating refrigerant and returning the refrigerant used for water generation to the circulation system in the air conditioner according to the embodiment. be. 図７は、実施形態に係る空気調和装置の変形例で、オゾンを用いて加速化過酸化水素の生成効率を向上するシステムを示す例示的かつ模式的な説明図である。FIG. 7 is an exemplary and schematic explanatory diagram showing a system for improving the production efficiency of accelerated hydrogen peroxide using ozone, which is a modification of the air conditioner according to the embodiment.

以下に、一つの実施形態について、図を参照して説明する。なお、本明細書において、実施形態に係る構成要素及び当該要素の説明が、複数の表現で記載されることがある。構成要素及びその説明は、一例であり、本明細書の表現によって限定されない。構成要素は、本明細書におけるものとは異なる名称でも特定され得る。また、構成要素は、本明細書の表現とは異なる表現によっても説明され得る。 One embodiment will be described below with reference to the drawings. Note that, in this specification, the constituent elements according to the embodiment and the description of the relevant elements may be described with a plurality of expressions. The components and their descriptions are examples and are not limited by the expressions herein. Components may also be identified by names different from those herein. Also, components may be described in terms that differ from the terms used herein.

図１は、実施形態に係る空気調和装置１０（室内機１０Ａ）の構成を示す例示的かつ模式的な図である。図１示す室内機１０Ａは、例えば、家庭用のエアコンディショナである。室内機１０Ａは、建造物の室内に配置されるとともに、冷媒配管及び電気配線を介して室外に配置された室外機１０Ｂ（図５参照）に接続される。なお、空気調和装置１０は、この例に限られず、業務用のエアコンディショナのような他の空気調和装置であってもよい。 FIG. 1 is an exemplary and schematic diagram showing the configuration of an air conditioner 10 (indoor unit 10A) according to an embodiment. The indoor unit 10A shown in FIG. 1 is, for example, a home air conditioner. The indoor unit 10A is arranged indoors in a building and is connected to an outdoor unit 10B (see FIG. 5) arranged outdoors via refrigerant pipes and electrical wiring. Note that the air conditioner 10 is not limited to this example, and may be another air conditioner such as a commercial air conditioner.

空気調和装置１０としての室内機１０Ａは、ハウジング１２と、吸込口フィルタ１４と、ファン１６と、熱交換器１８と、風向板２０等を備える。また、本実施形態の室内機１０Ａは、さらに、過酸化水素発生部２２として、光源２４、光触媒フィルタ２６、水受け部２８等を備える。 An indoor unit 10A as an air conditioner 10 includes a housing 12, a suction port filter 14, a fan 16, a heat exchanger 18, a wind direction plate 20, and the like. Further, the indoor unit 10A of the present embodiment further includes a light source 24, a photocatalytic filter 26, a water receiver 28, etc. as the hydrogen peroxide generator 22. FIG.

図１に示されるように、本明細書において、便宜上、Ｘ軸、Ｙ軸及びＺ軸が定義される。Ｘ軸とＹ軸とＺ軸とは、互いに直交する。Ｘ軸は、室内機１０Ａ（空気調和装置１０）の幅に沿って設けられる。Ｙ軸は、室内機１０Ａの奥行に沿って設けられる。Ｚ軸は、室内機１０Ａの高さに沿って設けられる。 As shown in FIG. 1, the X, Y and Z axes are defined herein for convenience. The X-axis, Y-axis and Z-axis are orthogonal to each other. The X-axis is provided along the width of the indoor unit 10A (air conditioner 10). The Y-axis is provided along the depth of the indoor unit 10A. The Z-axis is provided along the height of the indoor unit 10A.

さらに、本明細書において、Ｘ方向、Ｙ方向及びＺ方向が定義される。Ｘ方向は、Ｘ軸に沿う方向であって、Ｘ軸の矢印が示す＋Ｘ方向と、Ｘ軸の矢印の反対方向である－Ｘ方向とを含む。Ｙ方向は、Ｙ軸に沿う方向であって、Ｙ軸の矢印が示す＋Ｙ方向と、Ｙ軸の矢印の反対方向である－Ｙ方向とを含む。Ｚ方向は、Ｚ軸に沿う方向であって、Ｚ軸の矢印が示す＋Ｚ方向と、Ｚ軸の矢印の反対方向である－Ｚ方向とを含む。本実施形態において、＋Ｚ方向は上方向であり、－Ｚ方向は下方向である。 Further, the X, Y and Z directions are defined herein. The X direction is a direction along the X axis and includes a +X direction indicated by an arrow on the X axis and a −X direction opposite to the arrow on the X axis. The Y direction is a direction along the Y axis and includes a +Y direction indicated by an arrow on the Y axis and a −Y direction opposite to the arrow on the Y axis. The Z direction is a direction along the Z axis and includes the +Z direction indicated by the Z axis arrow and the −Z direction opposite to the Z axis arrow. In this embodiment, the +Z direction is upward and the -Z direction is downward.

ハウジング１２は、Ｘ方向に延びた略直方体状に形成される。なお、ハウジング１２は、他の形状に形成されてもよい。ハウジング１２は、例えば、建造物の壁に架けられる。また、別の例では、室内空気の吸込み口１２ａおよび空気調整済みの空気の吹出し口１２ｂを壁面に開口させ、ハウジング１２自体は壁内部に埋め込まれる形態でもよい。図１の場合、吸込み口１２ａはハウジング１２の上面に設けられ、吹出し口１２ｂはＹ方向の側面に設けられているが、室内の空気の吸込みおよび吹出しがスムーズに行えれば、吸込み口１２ａおよび吹出し口１２ｂの位置は適宜変更可能である。 The housing 12 is formed in a substantially rectangular parallelepiped shape extending in the X direction. Note that the housing 12 may be formed in other shapes. The housing 12 is hung, for example, on the wall of a building. In another example, the indoor air inlet 12a and the air-conditioned air outlet 12b may be opened in the wall surface, and the housing 12 itself may be embedded in the wall. In the case of FIG. 1, the suction port 12a is provided on the top surface of the housing 12, and the air outlet 12b is provided on the side surface in the Y direction. The position of the outlet 12b can be changed as appropriate.

吸込み口１２ａは、通風路ＷＲの一端に開口し、吹出し口１２ｂは通風路ＷＲの他端に開口している。通風路ＷＲの一部には、熱交換器１８、ファン１６および過酸化水素発生部２２が配置されている。本実施形態の室内機１０Ａ（空気調和装置１０）は、室内の空気の温度調節および過酸化水素（ＯＨラジカルを含む）を用いた室内の除菌処理を行う装置である。なお、本明細書では、通風路ＷＲにおいて吸込み口１２ａに近い側を上流、吹出し口１２ｂに近い側を下流と称する場合がある。また、吸込み口１２ａ及び吹出し口１２ｂの開口形状及び位置は、例示されたものに限られない。 The suction port 12a opens at one end of the air passage WR, and the air outlet 12b opens at the other end of the air passage WR. A heat exchanger 18, a fan 16, and a hydrogen peroxide generator 22 are arranged in a part of the ventilation passage WR. The indoor unit 10A (air conditioner 10) of the present embodiment is a device that performs indoor air temperature control and indoor sterilization using hydrogen peroxide (including OH radicals). In this specification, the side of the air passage WR near the suction port 12a may be called upstream, and the side near the blowout port 12b may be called downstream. Moreover, the opening shape and position of the suction port 12a and the blowing port 12b are not limited to those illustrated.

吸込口フィルタ１４は、例えば、ファン１６及び熱交換器１８の上流側で吸込み口１２ａの部分または吸込み口１２ａより下流側の通風路ＷＲに配置される。吸込口フィルタ１４は、例えば、網状に形成され、吸込み口１２ａから吸い込まれた空気を濾過し、当該空気中の塵埃を捕捉する。なお、室内機１０Ａは、吸込口フィルタ１４で捕集した塵埃を除去する掃除機構を設けてもよい。 The suction port filter 14 is arranged, for example, in the portion of the suction port 12a on the upstream side of the fan 16 and the heat exchanger 18 or in the air passage WR on the downstream side of the suction port 12a. The suction port filter 14 is formed in a mesh shape, for example, filters the air sucked from the suction port 12a, and captures dust in the air. In addition, the indoor unit 10A may be provided with a cleaning mechanism for removing dust collected by the suction port filter 14 .

ファン１６は、Ｘ方向に延びる回転軸まわりに回転することで、ハウジング１２の外部の空気を吸込み口１２ａから当該ハウジング１２の内部の通風路ＷＲに取り入れ、熱交換器１８を通過させて、ハウジング１２の外部に排出させる。つまり、室内機１０Ａは、吸込み口１２ａからハウジング１２外部の空気（室内の空気）をハウジング１２の内部の通風路ＷＲへ吸い込む。そして、吸い込まれた空気は、熱交換器１８および過酸化水素発生部２２を通過し、吹出し口１２ｂから除菌効果を有する温度調整済みの空気（風）として吹き出される。 The fan 16 rotates around a rotation axis extending in the X direction, thereby taking in air from the outside of the housing 12 from the suction port 12a into the air passage WR inside the housing 12, passing through the heat exchanger 18, and passing the air through the housing. 12 is discharged to the outside. That is, the indoor unit 10A sucks air outside the housing 12 (indoor air) into the air passage WR inside the housing 12 through the suction port 12a. Then, the sucked air passes through the heat exchanger 18 and the hydrogen peroxide generator 22, and is blown out from the outlet 12b as temperature-adjusted air (wind) having a sterilizing effect.

熱交換器１８は、通風路ＷＲに設けられる。図１の場合、熱交換器１８は、通風路ＷＲにおいて、ファン１６を取り囲むように配置されている。別の例では、熱交換器１８は、ファン１６より上流側に配置されてもよく、更に別の例では、ファン１６より下流側に配置されてもよい。熱交換器１８は、例えば冷媒配管と複数のフィンとを有する。熱交換器１８は、通風路ＷＲにおいて周囲の気体と熱交換を行う。熱交換器１８は通風路ＷＲに位置するため、ファン１６が駆動し下流側への送風動作を行うと、吸込み口１２ａから吸い込まれた空気が熱交換器１８に送り込まれ通過する。これにより、通風路ＷＲを流れる空気が熱交換器１８と熱交換を行い、冷房運転時には通風路ＷＲを流れる空気（風）を冷却し、暖房運転時には通風路ＷＲを流れる空気（風）を加熱する。なお、本実施形態において、熱交換器１８は、Ｘ方向に沿ってファン１６のＺ方向側（図中上側）を取り囲むように配置されている。この配置姿勢および形状は、通風路ＷＲの経路やハウジング１２の形状、内蔵する各部品のレイアウト等に応じて適宜変更可能である。 A heat exchanger 18 is provided in the air passage WR. In the case of FIG. 1, the heat exchanger 18 is arranged so as to surround the fan 16 in the ventilation passage WR. In another example, heat exchanger 18 may be positioned upstream from fan 16 , and in yet another example, may be positioned downstream from fan 16 . The heat exchanger 18 has, for example, refrigerant pipes and a plurality of fins. The heat exchanger 18 exchanges heat with surrounding gas in the ventilation passage WR. Since the heat exchanger 18 is located in the ventilation path WR, when the fan 16 is driven to blow air downstream, the air sucked from the suction port 12a is sent to the heat exchanger 18 and passes through it. As a result, the air flowing through the ventilation passage WR exchanges heat with the heat exchanger 18, cooling the air (wind) flowing through the ventilation passage WR during cooling operation, and heating the air (wind) flowing through the ventilation passage WR during heating operation. do. In this embodiment, the heat exchanger 18 is arranged along the X direction so as to surround the Z direction side (upper side in the figure) of the fan 16 . This arrangement attitude and shape can be changed as appropriate according to the path of the ventilation path WR, the shape of the housing 12, the layout of each built-in component, and the like.

風向板２０は、ルーバとも称され得る。風向板２０は、室内機１０Ａの吹出し口１２ｂの近傍に設けられる。風向板２０は、ファン１６の下流に位置する。風向板２０は、図１に破線で示す閉じ位置Ｐｃと、実線で示す開き位置Ｐｏとの間で連続的または間欠的に移動可能である。風向板２０は、閉じ位置Ｐｃに位置する場合、吹出し口１２ｂほぼ全域を覆う。風向板２０の開き角度を制御することにより、吹出し口１２ｂから吹き出す風の向きが調整可能である。例えば、風向板２０を水平姿勢に近づくように開けば、室内機１０Ａからより離れた位置に向けて風を送り、風向板２０を閉じ位置Ｐｃに近づけることにより、室内機１０Ａにより近い位置に向けて風を送ることができる。また、Ｘ方向及び－Ｘ方向に揺動可能な左右風向板を併せて設けて、吹出し口１２ｂから吹き出す風の向きをＸ方向及び－Ｘ方向に制御するようにしてもよい。 The wind deflector 20 may also be referred to as a louver. The wind direction plate 20 is provided near the outlet 12b of the indoor unit 10A. The wind deflector 20 is positioned downstream of the fan 16 . The wind direction plate 20 is continuously or intermittently movable between the closed position Pc indicated by the dashed line in FIG. 1 and the open position Po indicated by the solid line. When positioned at the closed position Pc, the wind direction plate 20 covers substantially the entire area of the outlet 12b. By controlling the opening angle of the airflow direction plate 20, the direction of the air blown out from the air outlet 12b can be adjusted. For example, if the wind direction plate 20 is opened so as to approach the horizontal posture, air is sent toward a position further away from the indoor unit 10A, and by moving the wind direction plate 20 closer to the closed position Pc, the wind is directed closer to the indoor unit 10A. can send wind. Further, a horizontal wind direction plate capable of swinging in the X direction and the -X direction may also be provided to control the direction of the wind blowing out from the blowing port 12b in the X direction and the -X direction.

過酸化水素発生部２２は、前述したように光源２４と、光触媒フィルタ２６と、水受け部２８とで構成され、ハウジング１２内部で過酸化水素を生成する。 The hydrogen peroxide generator 22 is composed of the light source 24, the photocatalyst filter 26, and the water receiver 28 as described above, and generates hydrogen peroxide inside the housing 12. As shown in FIG.

光源２４は、例えば酸化チタン(二酸化チタンＴｉＯ２)等の光触媒の価電子帯の電子を伝導帯に励起し得るような光、例えば紫外線光を照射可能である。光源２４は、室内機１０Ａが運転中常時紫外線光を照射するようにしてもよいし、除菌処理モードが選択された場合のみに紫外線光を照射するようにしてもよい。光源２４は、光触媒フィルタ２６の概ね全面に所定の強度の紫外線光を照射できるように、光触媒フィルタ２６の表面の延設方向（Ｘ軸方向）に照射面を有し、照射領域が設定されている。なお、後述するが、本実施形態の過酸化水素発生部２２の場合、光源２４は、図１に示されるように、２枚の光触媒フィルタ２６に挟まれた状態で配置され、両方の光触媒フィルタ２６に紫外線光を照射できるように配置される。したがって、光源２４は、光触媒フィルタ２６を通過する空気を遮らないように、例えば、所定間隔を空けてＸ方向に複数個が設置されてもよい。また別の実施形態では、光源２４は、通風路ＷＲの空気の流れを遮らないような位置（例えば、通風路ＷＲの上方の位置）から紫外線光を照射するようにしてもよい。この場合、光源２４は照射領域をカバー可能な単一の照射面としてもよい。 The light source 24 can emit light, such as ultraviolet light, which can excite electrons in the valence band of a photocatalyst such as titanium oxide (titanium dioxide TiO 2 ) to the conduction band. The light source 24 may emit ultraviolet light all the time while the indoor unit 10A is in operation, or may emit ultraviolet light only when the sterilization mode is selected. The light source 24 has an irradiation surface in the extension direction (X-axis direction) of the surface of the photocatalyst filter 26 so that the entire surface of the photocatalyst filter 26 can be irradiated with ultraviolet light of a predetermined intensity, and an irradiation area is set. there is As will be described later, in the case of the hydrogen peroxide generator 22 of the present embodiment, the light source 24 is sandwiched between two photocatalyst filters 26 as shown in FIG. 26 is arranged so that it can be irradiated with ultraviolet light. Therefore, a plurality of light sources 24 may be installed in the X direction at predetermined intervals, for example, so as not to block the air passing through the photocatalyst filter 26 . In another embodiment, the light source 24 may irradiate ultraviolet light from a position that does not block the flow of air in the airway WR (for example, a position above the airway WR). In this case, the light source 24 may be a single illumination surface capable of covering the illumination area.

光触媒フィルタ２６は、通風路ＷＲの一部で空気の通過を許容するように設けられた、光触媒を含む含水可能な部材である。具体的には、光触媒フィルタ２６は、Ｘ方向に延びるとともに、Ｚ方向に略垂直に延びた、縦置き配置された扁平形状の部材で、例えば不織布等で形成されている。この光触媒フィルタ２６の形状および配置は、通風路ＷＲの経路やハウジング１２の形状、内蔵する各部品のレイアウト等に応じて適宜変更可能である。そして、光触媒フィルタ２６のＺ方向の下端部は、水受け部２８に貯留された水に浸かり、毛細管現象を利用して光触媒フィルタ２６の上端部まで水を吸い上げている。つまり、光触媒フィルタ２６は水を潤沢に含んだ状態が維持可能である。光触媒フィルタ２６は、例えば粉末状の酸化チタン（二酸化チタンＴｉＯ２）を担持している。 The photocatalyst filter 26 is a water-absorbable member that contains a photocatalyst and is provided to allow passage of air in a portion of the ventilation path WR. Specifically, the photocatalyst filter 26 is a vertically arranged flat member extending in the X direction and substantially perpendicular to the Z direction, and is formed of, for example, a non-woven fabric. The shape and arrangement of the photocatalyst filter 26 can be changed as appropriate according to the path of the ventilation path WR, the shape of the housing 12, the layout of each built-in component, and the like. The lower end of the photocatalytic filter 26 in the Z direction is immersed in the water stored in the water receiving portion 28, and sucks up the water to the upper end of the photocatalytic filter 26 using capillary action. In other words, the photocatalyst filter 26 can maintain a state in which it contains plenty of water. The photocatalyst filter 26 carries, for example, powdered titanium oxide (titanium dioxide TiO 2 ).

図２に例示的かつ模式的に示されるように、光触媒フィルタ２６（光触媒２６ａ）は、光源２４から紫外線光（ＵＶ）の照射を受けると、その表面から電子２６ｂが飛び出す。このとき、電子２６ｂが抜け出た穴は正孔（ホール）と呼ばれ、プラスの電荷２６ｃを帯びる。正孔は強い酸化力をもち、水中にある水酸化物イオン３０（ＯＨ－）などから電子を奪う。このとき、電子を奪われた水酸化物イオン３０は非常に不安定な状態のＯＨラジカル３２になる。ＯＨラジカル３２は強力な酸化力を持ち、近くの有機物から電子を奪い、自分自身が安定になろうとする。その結果、電子を奪われた有機物は結合を分断され、最終的には二酸化炭素や水となり大気中に発散する。つまり、有機物である菌やウイルスの不活性化が可能となる。 As exemplarily and schematically shown in FIG. 2, when the photocatalyst filter 26 (photocatalyst 26a) is irradiated with ultraviolet light (UV) from the light source 24, electrons 26b are emitted from its surface. At this time, the hole from which the electron 26b escapes is called a hole, and is charged with a positive charge 26c. Holes have a strong oxidizing power and take electrons from hydroxide ions 30 (OH − ) in water. At this time, the hydroxide ions 30 deprived of electrons become OH radicals 32 in a very unstable state. The OH radical 32 has a strong oxidizing power, steals electrons from nearby organic matter, and tries to stabilize itself. As a result, the bonds of the organic substances that have lost electrons are broken, and finally they become carbon dioxide and water, which are released into the atmosphere. In other words, it becomes possible to inactivate bacteria and viruses that are organic matter.

光触媒フィルタ２６で生成されたＯＨラジカル３２は、通風路ＷＲを流れる空気が光触媒フィルタ２６を通過する空気流により効果的に排出される。そのため、光触媒フィルタ２６は、通風路ＷＲを概ね覆うような大きさで設置されることが望ましいが、通風路ＷＲにおける空気の空気抵抗等を考慮し、空気抵抗の調整のために、図１に示すように、光触媒フィルタ２６が非存在となる領域を適宜調整設定してもよい。また、例えば、光触媒フィルタ２６を回動可能に取り付け、光触媒フィルタ２６の回動により、その傾きを変更させて、通風路ＷＲにおける空気の空気抵抗を適宜調整できるようにしてもよい。 The OH radicals 32 generated by the photocatalyst filter 26 are effectively discharged by the air flow passing through the photocatalyst filter 26 in the ventilation passage WR. Therefore, it is desirable that the photocatalyst filter 26 be installed in a size that covers the ventilation passage WR. As shown, the region where the photocatalyst filter 26 does not exist may be appropriately adjusted and set. Further, for example, the photocatalyst filter 26 may be rotatably attached, and the tilt of the photocatalyst filter 26 may be changed by rotating the photocatalyst filter 26 so that the air resistance of the air in the ventilation passage WR can be appropriately adjusted.

水受け部２８は、例えば、室内機１０Ａの冷房運転時に熱交換器１８で発生した結露水を図示を省略したドレンパンで受け、図示を省略した配管を通して受け入れ貯留してもよいし、給水タンクや給水口等を介して外部から供給された水を受け入れて貯留してもよい。給水タンクから水を供給する場合は、あらかじめ給水タンクに界面活性剤を含む水を導入することで、界面活性剤を含む水を水受け部２８に供給することができる。このようにすれば、後述するように、加速度過酸化水素を生成することができる。また、後述するが、室外機１０Ｂと室内機１０Ａの熱交換器１８とを循環する冷媒を利用して積極的に生成した結露水を貯留してもよい。前述したように、水受け部２８には、光触媒フィルタ２６の下端部が浸かり、毛細管現象を利用し、貯留した水を光触媒フィルタ２６が十分に含水できるようにしている。 The water receiving unit 28 may receive, for example, a drain pan (not shown) to receive condensed water generated in the heat exchanger 18 during the cooling operation of the indoor unit 10A, and receive and store the water through a pipe (not shown). Water supplied from the outside through a water supply port or the like may be received and stored. When water is supplied from the water tank, the water containing the surfactant can be supplied to the water receiver 28 by introducing the water containing the surfactant into the water tank in advance. In this way, accelerated hydrogen peroxide can be produced as will be described later. Further, as will be described later, the condensed water that is actively generated using the refrigerant that circulates between the outdoor unit 10B and the heat exchanger 18 of the indoor unit 10A may be stored. As described above, the lower end of the photocatalyst filter 26 is immersed in the water receiving portion 28 so that the photocatalyst filter 26 can sufficiently absorb the retained water using capillary action.

図３は、室内機１０Ａ（空気調和装置１０）において、結露水を含水する光触媒フィルタ２６に紫外線光を照射し、ＯＨラジカル３２を含む過酸化水素３６を生成することを示す例示的かつ模式的な説明図である。 FIG. 3 is an exemplary and schematic illustration of irradiating a photocatalyst filter 26 containing condensed water with ultraviolet light to generate hydrogen peroxide 36 containing OH radicals 32 in an indoor unit 10A (air conditioner 10). It is an explanatory diagram.

上述したように、酸化チタン等の光触媒を担持した光触媒フィルタ２６が水受け部２８に貯留された水（Ｈ２Ｏ）を毛細管現象を利用して吸い上げられている状態で、光源２４から紫外線光（ＵＶ）の照射を受けると、図２で説明したように、光触媒フィルタ２６の表面から電子２６ｂが飛び出す。このとき、電子２６ｂが抜け出た穴である正孔は、プラスの電荷２６ｃを帯びる。そして、正孔は水受け部２８から吸い上げた水の中にある水酸化物イオン３０などから電子を奪う。このとき、電子を奪われた水酸化物イオン３０は非常に不安定な状態のＯＨラジカル３２になる。生成されたＯＨラジカル３２の周囲には、光触媒フィルタ２６で吸い上げられた水受け部２８から供給される水（Ｈ２Ｏ）が十分に存在するため、ＯＨラジカル３２が水に可溶し過酸化水素３６（Ｈ２Ｏ２）が生成される。ＯＨラジカル３２は、一般に酸化されやすく短寿命であるが、過酸化水素３６とすることにより、酸化されにくくなり寿命を延ばすことができる。 As described above, the water (H 2 O) stored in the water receiving portion 28 is sucked up by the photocatalyst filter 26 supporting a photocatalyst such as titanium oxide, and the ultraviolet light is emitted from the light source 24 . When irradiated with (UV), electrons 26b are ejected from the surface of the photocatalyst filter 26, as described with reference to FIG. At this time, a hole, which is a hole from which the electron 26b has escaped, has a positive charge 26c. Then, the holes take electrons from the hydroxide ions 30 and the like in the water sucked up from the water receiving portion 28 . At this time, the hydroxide ions 30 deprived of electrons become OH radicals 32 in a very unstable state. Since there is sufficient water (H 2 O) sucked up by the photocatalyst filter 26 and supplied from the water receiving part 28 around the generated OH radicals 32, the OH radicals 32 are dissolved in water and peroxidized. Hydrogen 36 (H 2 O 2 ) is produced. The OH radical 32 is generally easily oxidized and has a short life. However, by using the hydrogen peroxide 36, it is difficult to be oxidized and the life can be extended.

過酸化水素発生部２２で発生した過酸化水素３６は、ファン１６の動作によりハウジング１２内部を流れ、光触媒フィルタ２６を通過する風Ｗに乗り室内機１０Ａの外部（室内）に放出される。室内機１０Ａから放出された過酸化水素３６は、空気中に浮遊するウイルス等の表面でプラスイオン（Ｈ＋）とマイナスイオン（Ｏ２ －）が結合し、一部がＯＨラジカル３２に戻る。酸化力の強いＯＨラジカル３２は、ウイルスのたんぱく質の表面から、水素原子（Ｈ）を奪い、非活性化（除菌）する。なお、ＯＨラジカル３２は奪い取った水素原子（Ｈ）と結合し、反応後は水（Ｈ２Ｏ）になり空気中に戻る。 The hydrogen peroxide 36 generated by the hydrogen peroxide generator 22 flows inside the housing 12 due to the operation of the fan 16, rides on the wind W passing through the photocatalyst filter 26, and is released to the outside (indoor) of the indoor unit 10A. In the hydrogen peroxide 36 released from the indoor unit 10A, positive ions (H + ) and negative ions (O 2 − ) combine on the surfaces of viruses and the like floating in the air, and part of the hydrogen peroxide 36 returns to OH radicals 32 . The OH radical 32, which has a strong oxidizing power, deprives the surface of the virus protein of hydrogen atoms (H) and inactivates (sterilizes) the virus. Note that the OH radicals 32 bond with the hydrogen atoms (H) that have been taken away, and after the reaction, become water (H 2 O) and return to the air.

このように、本実施形態の空気調和装置１０（室内機１０Ａ）は、光触媒フィルタ２６に紫外線光を照射するのみで、酸化力の強いＯＨラジカル３２を生成する。このとき、光触媒フィルタ２６には、充分な水が含浸可能なため、ＯＨラジカル３２を含む過酸化水素３６を十分に生成可能となる。このとき、通風路ＷＲに対して十分な広さ（大きさ）の光触媒フィルタ２６を容易に配置可能なので、十分な量の過酸化水素３６を発生させることが可能である。その結果、容易な構成で通風路ＷＲから排出される温度調整済みの空気に過酸化水素３６を含ませて室内に放出することにより室内の除菌効果の向上が図れる。また、通風路ＷＲに設けられる光触媒フィルタ２６には、充分な水が含浸可能なため、空気中に十分な水分を放出可能であるとともに、放出されたＯＨラジカル３２は除菌処理の結果、水に戻るため、室内に水分を戻すことが可能で、室内の乾燥抑制に寄与できる。前述したように、水を含浸可能な光触媒フィルタ２６は、ハウジング１２の中で比較的容易に大型部品として組み込み易いため、より多くの水分を放出可能となり室内の乾燥抑制を容易に実現することができる。 Thus, the air conditioner 10 (indoor unit 10A) of the present embodiment generates the OH radicals 32 with strong oxidizing power only by irradiating the photocatalyst filter 26 with ultraviolet light. At this time, since the photocatalyst filter 26 can be impregnated with sufficient water, hydrogen peroxide 36 containing the OH radicals 32 can be generated sufficiently. At this time, a sufficient amount of hydrogen peroxide 36 can be generated because the photocatalyst filter 26 having a sufficient width (size) can be easily arranged with respect to the ventilation path WR. As a result, with a simple structure, the temperature-controlled air discharged from the ventilation passage WR is impregnated with the hydrogen peroxide 36 and discharged into the room, thereby improving the sterilization effect in the room. In addition, since the photocatalyst filter 26 provided in the ventilation path WR can be impregnated with sufficient water, it is possible to release sufficient moisture into the air, and the released OH radicals 32 are removed from the water as a result of the sterilization treatment. , it is possible to return the moisture to the room, which contributes to the suppression of dryness in the room. As described above, the water-impregnable photocatalyst filter 26 can be relatively easily assembled as a large-sized component in the housing 12, so that more water can be released, and the indoor drying can be easily suppressed. can.

ところで、ＯＨラジカル３２は、界面活性剤と組み合わせることで、より除菌能力が向上（除菌効率が向上）する、いわゆる、「加速度過酸化水素」とすることができる。加速度過酸化水素は、界面活性剤の働きにより菌やウイルスの表面からＯＨラジカルが浸透しやすくなり、より短時間で菌やウイルスを不活性化できると考えられている。そこで、本実施形態の空気調和装置１０（室内機１０Ａ）は、図４に示されるように、水受け部２８は、界面活性剤３８を保持可能である。例えば、水受け部２８に貯留された水に継続的に界面活性成分を供給可能なように、水受け部２８の底面部２８ａには、界面活性剤３８としての界面活性剤シートやビーズ状の界面活性剤ビーズ等を保持可能な保持部が形成されている。保持部は、例えば、網等で構成された保持領域を形成し、界面活性剤３８が水受け部２８の内部で浮遊し片寄った位置に移動すること等を抑制し、水受け部２８に貯留された水の界面活性成分の濃度の均一化を実現している。なお、水受け部２８が保持する界面活性剤３８は、長期間継続的に徐々に界面活性成分が溶け出すように構成し、長期間メンテナンス不要（界面活性剤の投入作業の不要）とすることが望ましい。別の実施形態では、固形タイプや液状タイプの界面活性剤３８を定期的に投入する自動投入装置を設けてもよい。この界面活性成分の濃度ばらつきを抑制するために、水受け部２８の槽内に攪拌装置等を設けてもよい。例えば、水受け部２８に定期的に振動を与えたり、水受け部２８の内部で定期的に動作する攪拌片を設けたりしてもよい。 By the way, the OH radical 32 can be made into so-called "accelerated hydrogen peroxide" that further improves the sterilization ability (improves the sterilization efficiency) by combining it with a surfactant. Accelerated hydrogen peroxide is thought to be able to inactivate bacteria and viruses in a shorter period of time by facilitating penetration of OH radicals from the surface of bacteria and viruses due to the action of a surfactant. Therefore, in the air conditioner 10 (indoor unit 10A) of the present embodiment, the water receiver 28 can hold the surfactant 38 as shown in FIG. For example, a surface-active agent sheet or bead-like surfactant 38 may be provided on the bottom surface portion 28a of the water receiving portion 28 so that the surface active component can be continuously supplied to the water stored in the water receiving portion 28. A holding portion capable of holding surfactant beads or the like is formed. The holding part forms a holding area made up of, for example, a net, etc., suppresses the surfactant 38 from floating inside the water receiving part 28 and moving to a one-sided position, and is stored in the water receiving part 28. It realizes the uniformity of the concentration of surface-active components in the water. The surfactant 38 held by the water receiving portion 28 should be configured so that the surfactant component gradually dissolves continuously over a long period of time so that maintenance is not required for a long period of time (no need to add the surfactant). is desirable. In another embodiment, an automatic dosing device may be provided for periodically dosing the surfactant 38 in solid or liquid form. A stirrer or the like may be provided in the tank of the water receiver 28 in order to suppress variations in concentration of the surface-active component. For example, the water receiving portion 28 may be periodically vibrated, or an agitating piece that operates periodically may be provided inside the water receiving portion 28 .

このように、水受け部２８に界面活性剤３８を投入して、貯留する水に界面活性成分を含ませて、光触媒フィルタ２６に吸い上げさせておく。そして、光触媒フィルタ２６に光源２４から紫外線光（ＵＶ）を照射することにより、加速度過酸化水素３６Ａ（Ｈ２Ｏ２）を容易に生成し、図３の例と同様に、通風路ＷＲを流れる風Ｗに乗せてより除菌効率のよい加速度過酸化水素３６Ａを室内に放出することができる。なお、加速度過酸化水素３６Ａを生成するための界面活性剤の濃度は高くないため、除菌処理後に水に戻った場合でも、拭き取り等は必要ない。また、次亜塩素酸等のように塩分を含まないため錆の発生等を心配する必要もない。 In this manner, the surface active agent 38 is put into the water receiving portion 28 so that the water to be stored contains the surface active component, and the photocatalyst filter 26 sucks up the water. Then, by irradiating the photocatalyst filter 26 with ultraviolet light (UV) from the light source 24, accelerated hydrogen peroxide 36A (H 2 O 2 ) is easily generated, and flows through the ventilation path WR as in the example of FIG. The accelerated hydrogen peroxide 36A, which is carried on the wind W and has a higher sterilization efficiency, can be discharged into the room. Note that since the concentration of the surfactant for generating the accelerated hydrogen peroxide 36A is not high, wiping or the like is not necessary even when the liquid returns to water after the sterilization process. In addition, unlike hypochlorous acid, it does not contain salt, so there is no need to worry about the occurrence of rust.

ところで、室内機１０Ａ（空気調和装置１０）を運転する際、一般的に冷房運転時には、熱交換器１８の部分で結露水が発生するが、暖房運転時には、熱交換器１８の部分で結露水は発生しない。そのため、暖房運転時に光触媒フィルタ２６を用いて過酸化水素３６や加速度過酸化水素３６Ａを発生させるためには、外部より水を水受け部２８に供給する必要がある。 By the way, when the indoor unit 10A (air conditioner 10) is operated, condensed water generally occurs at the heat exchanger 18 during cooling operation, but condensed water is generated at the heat exchanger 18 during heating operation. does not occur. Therefore, in order to generate the hydrogen peroxide 36 and the accelerated hydrogen peroxide 36A using the photocatalytic filter 26 during the heating operation, it is necessary to supply water to the water receiver 28 from the outside.

そこで、本実施形態の室内機１０Ａ（空気調和装置１０）は、暖房運転時にも結露水を生成する水生成部を備える。例えば、図４に示すように、水受け部２８の壁面の一部、例えば、底面部２８ａは、水生成部の一部を構成する冷却管３４を下方に備え、水受け部２８自体の冷却を行う。冷却管３４には、熱交換器１８を含む冷媒回路の中を循環する冷媒を、例えば、５℃程度の状態にして流す。その結果、暖房運転時でも水受け部２８を冷却し、水受け部２８の壁面で結露を生じさせ、結露水を溜めることができる。なお、水受け部２８の外壁や冷却管３４の周囲には、断熱材が配置され、結露が水受け部２８の内壁側（槽内、容器内）で発生するように構成している。なお、冷却管３４は、水受け部２８の外壁を厚くして、そこに埋め込まれるように配管されてもよい。また、冷却管３４は、水受け部２８の内側（例えば、底面部２８ａの上面）に配管されてもよい。 Therefore, the indoor unit 10A (air conditioner 10) of the present embodiment includes a water generator that generates condensed water even during heating operation. For example, as shown in FIG. 4, a part of the wall surface of the water receiving part 28, for example, the bottom part 28a, has a cooling pipe 34 below which constitutes a part of the water generating part, and cools the water receiving part 28 itself. I do. Refrigerant that circulates in the refrigerant circuit including the heat exchanger 18 is allowed to flow through the cooling pipe 34 in a state of, for example, about 5°C. As a result, the water receiving portion 28 can be cooled even during heating operation, dew condensation can be generated on the wall surface of the water receiving portion 28, and the condensed water can be collected. A heat insulating material is disposed around the outer wall of the water receiving portion 28 and the cooling pipe 34 so that dew condensation occurs on the inner wall side of the water receiving portion 28 (inside the tank and inside the container). Incidentally, the cooling pipe 34 may be arranged so that the outer wall of the water receiving portion 28 is thickened and embedded therein. Also, the cooling pipe 34 may be arranged inside the water receiving portion 28 (for example, the upper surface of the bottom portion 28a).

図５に示されるように、空気調和装置１０の室外機１０Ｂは、室外熱交換器４０および室外ファン４２、圧縮機４４と、四方弁４６と、膨張弁４８と、を備える。室外機１０Ｂの室外熱交換器４０、圧縮機４４、四方弁４６、膨張弁４８と、室内機１０Ａの熱交換器１８（室内熱交換器）とは、冷媒配管Ｐ（Ｐ１～Ｐ５）で接続され、冷媒が循環可能な冷媒回路を構成する。図５の場合、室外熱交換器４０と圧縮機４４に接続されたアキュムレータ４４ａが四方弁４６を介して冷媒配管Ｐ１で接続され、圧縮機４４は、四方弁４６を介して（室内）熱交換器１８と冷媒配管Ｐ２で接続されている。また、本実施形態の室内機１０Ａにおいて、（室内）熱交換器１８と室外機１０Ｂの膨張弁４８との間には、水受け部２８で結露水を生成する水生成部５０が配置されている。（室内）熱交換器１８と水生成部５０とは、冷媒配管Ｐ３で接続され、水生成部５０と膨張弁４８とは、冷媒配管Ｐ４で接続されている。そして、膨張弁４８と室外熱交換器４０とは、冷媒配管Ｐ５で接続されている。 As shown in FIG. 5, the outdoor unit 10B of the air conditioner 10 includes an outdoor heat exchanger 40, an outdoor fan 42, a compressor 44, a four-way valve 46, and an expansion valve 48. The outdoor heat exchanger 40, compressor 44, four-way valve 46, expansion valve 48 of the outdoor unit 10B and the heat exchanger 18 (indoor heat exchanger) of the indoor unit 10A are connected by refrigerant pipes P (P1 to P5). and form a refrigerant circuit in which the refrigerant can circulate. In the case of FIG. 5, the outdoor heat exchanger 40 and the accumulator 44a connected to the compressor 44 are connected via a four-way valve 46 to a refrigerant pipe P1, and the compressor 44 is connected to (indoor) heat exchange via the four-way valve 46. 18 and the refrigerant pipe P2. In addition, in the indoor unit 10A of the present embodiment, a water generating unit 50 for generating condensed water in the water receiving unit 28 is arranged between the (indoor) heat exchanger 18 and the expansion valve 48 of the outdoor unit 10B. there is The (indoor) heat exchanger 18 and the water generator 50 are connected by a refrigerant pipe P3, and the water generator 50 and the expansion valve 48 are connected by a refrigerant pipe P4. The expansion valve 48 and the outdoor heat exchanger 40 are connected by a refrigerant pipe P5.

室外熱交換器４０は、伝熱管（図示せず）を通流する冷媒と、室外ファン４２によって送り込まれる外気と、の間で熱交換を行う。 The outdoor heat exchanger 40 exchanges heat between a refrigerant flowing through a heat transfer tube (not shown) and outside air sent by an outdoor fan 42 .

圧縮機４４は、低温低圧のガス冷媒を圧縮し、高温高圧のガス冷媒として吐出する。なお、圧縮機４４の吸込側には、冷媒の気液分離を行うためのアキュムレータ４４ａが接続されている。 The compressor 44 compresses the low-temperature, low-pressure gas refrigerant and discharges it as a high-temperature, high-pressure gas refrigerant. An accumulator 44a is connected to the suction side of the compressor 44 for separating gas and liquid of the refrigerant.

膨張弁４８は、凝縮器としての室外熱交換器４０または（室内）熱交換器１８の一方で凝縮した冷媒を減圧する弁である。膨張弁４８で減圧された冷媒は、蒸発器としての室外熱交換器４０または（室内）熱交換器１８の他方に導かれる。 The expansion valve 48 is a valve that decompresses the refrigerant condensed in either the outdoor heat exchanger 40 or the (indoor) heat exchanger 18 as a condenser. The refrigerant decompressed by the expansion valve 48 is led to the other of the outdoor heat exchanger 40 and the (indoor) heat exchanger 18 as an evaporator.

なお、（室内）熱交換器１８は、内部の伝熱管を通流する冷媒と、（室内）ファン１６によって送り込まれる室内空気と、の間で熱交換を行う。 The (indoor) heat exchanger 18 exchanges heat between the refrigerant flowing through the internal heat transfer tubes and the indoor air sent by the (indoor) fan 16 .

四方弁４６は、空気調和装置１０の運転モードに応じて、冷媒の流路を切り替える弁である。 The four-way valve 46 is a valve that switches the refrigerant flow path according to the operation mode of the air conditioner 10 .

例えば、冷房運転時には、冷媒回路において、圧縮機４４、室外熱交換器４０、膨張弁４８、及び（室内）熱交換器１８の順番で冷媒が循環する。その結果、（室内）熱交換器１８で室内空気と冷媒との間で熱交換が行われ、熱交換によって冷却された空気が室内に排出され、室内温度を低下させる。熱交換で回収された熱（冷媒の熱）は、室外熱交換器４０で室外空気との間で熱交換され、屋外に排出され、冷媒回路から排出する。一方、暖房運転時には、冷媒回路において、圧縮機４４、（室内）熱交換器１８、膨張弁４８、室外熱交換器４０の順番で冷媒が循環する。その結果、（室内）熱交換器１８で室内空気と冷媒との間で熱交換が行われ、熱交換によって暖められた空気が室内に排出され、室内温度を上昇させる。熱交換で冷やされた冷媒は、室外熱交換器４０で室外空気との間で熱交換され、屋外から熱を回収し、冷媒回路内に取り込む。 For example, during cooling operation, the refrigerant circulates in the order of the compressor 44, the outdoor heat exchanger 40, the expansion valve 48, and the (indoor) heat exchanger 18 in the refrigerant circuit. As a result, heat is exchanged between the indoor air and the refrigerant in the (indoor) heat exchanger 18, and the air cooled by the heat exchange is discharged indoors, thereby lowering the indoor temperature. The heat (refrigerant heat) recovered by heat exchange is heat-exchanged with the outdoor air in the outdoor heat exchanger 40, discharged to the outdoors, and discharged from the refrigerant circuit. On the other hand, during heating operation, the refrigerant circulates in the order of the compressor 44, the (indoor) heat exchanger 18, the expansion valve 48, and the outdoor heat exchanger 40 in the refrigerant circuit. As a result, heat is exchanged between the indoor air and the refrigerant in the (indoor) heat exchanger 18, and the air warmed by the heat exchange is discharged indoors, raising the indoor temperature. The refrigerant cooled by heat exchange is heat-exchanged with the outdoor air in the outdoor heat exchanger 40, recovers heat from the outdoors, and takes it into the refrigerant circuit.

図６は、空気調和装置１０（室内機１０Ａ）の水生成部５０において、循環する冷媒を用いて結露水を発生させることと、利用した冷媒を循環系に戻すシステムを示す例示的かつ模式的な説明図である。 FIG. 6 is an exemplary and schematic diagram showing a system for generating condensed water using the circulating refrigerant and returning the used refrigerant to the circulation system in the water generating unit 50 of the air conditioner 10 (indoor unit 10A). It is an explanatory diagram.

暖房運転時に（室内）熱交換器１８から室内空気との熱交換の結果として冷媒配管Ｐ３に排出される冷媒は、例えば、中温、中圧の液状である。熱交換器１８の下流側の分岐部Ｓで、冷媒の流れは、第一の分流路Ｐ３１と第二の分流路Ｐ３２に分岐させられる。第一の分流路Ｐ３１には、冷媒の温度を結露水の発生可能温度以下まで低下させて水受け部２８に接触するように配置された冷却管３４に供給する低温化部５２が設けられている。低温化部５２は、例えばキャピラリで構成可能で、キャピラリにて冷媒を膨張させ、冷媒温度を、例えば５℃程度まで低下させる。低温化部５２の下流が冷却管３４であり、図４等に示されるように、水受け部２８の底面部２８ａに接続されている。その結果、暖房運転時でも水受け部２８の冷却を行い周囲に存在する空気を結露させ、水受け部２８の内部（槽内）に結露水で生成し、ＯＨラジカル３２、さらには過酸化水素３６（加速度過酸化水素３６Ａ）を生成するために利用される。 During heating operation, the refrigerant discharged from the (indoor) heat exchanger 18 to the refrigerant pipe P3 as a result of heat exchange with the indoor air is, for example, medium-temperature, medium-pressure liquid. At the branching portion S on the downstream side of the heat exchanger 18, the refrigerant flow is branched into a first branched channel P31 and a second branched channel P32. The first branch flow path P31 is provided with a low-temperature part 52 that lowers the temperature of the refrigerant to a temperature at which dew condensation water can be generated or lower, and supplies the refrigerant to the cooling pipe 34 arranged so as to contact the water receiving part 28. there is The low-temperature part 52 can be configured by, for example, a capillary, and expands the refrigerant with the capillary to lower the temperature of the refrigerant to, for example, about 5°C. A cooling pipe 34 is located downstream of the low-temperature part 52, and is connected to the bottom surface part 28a of the water receiving part 28 as shown in FIG. As a result, even during the heating operation, the water receiver 28 is cooled and the surrounding air is condensed. 36 (accelerated hydrogen peroxide 36A).

なお、暖房運転時に（室内）熱交換器１８から室内空気との熱交換の結果として冷媒配管Ｐ３に排出される冷媒は、中温、中圧の状態で膨張弁４８に提供される必要がある。この場合、分岐部Ｓで第一の分流路Ｐ３１に流れ、低温、低圧になった冷媒をそのままの状態で、第二の分流路Ｐ３２を流れる中温、中圧の冷媒に合流させると逆流してしまうので、スムーズに合流させることができない。そこで、水生成部５０は、冷却管３４を通過して結露水の生成に寄与した冷媒を、再加熱している。具体的には、第一の分流路Ｐ３１に設けられた低温化部５２の下流側で、当該低温化部５２で低下した冷媒の温度を第二の分流路Ｐ３２を流れる中温、中圧の冷媒を用いて、第二の分流路Ｐ３２を流れる冷媒の温度に接近させるように再加熱する再加熱部５４を備える。再加熱部５４は、例えば、冷却管３４の下流側の配管部と、第二の分流路Ｐ３２とが螺旋状の二重配管構造を形成し、第二の分流路Ｐ３２を流れる中温、中圧の冷媒によって、冷却管３４を通過した冷媒を加熱して冷媒流路Ｐ３３に排出する。そして、再加熱部５４を通過した第二の分流路Ｐ３２、すなわち冷媒配管Ｐ３４が、再加熱された冷媒が流れる冷媒流路Ｐ３３と、合流部Ｊで合流する。その結果、第一の分流路Ｐ３１に流れて低温、低圧になった冷媒は、再加熱処理の結果、第二の分流路Ｐ３２を流れる中温、中圧の冷媒にスムーズに合流し、冷媒配管Ｐ４に入り、膨張弁４８に供給されることができる。つまり、冷房運転時でも容易に結露水を生成することができる。なお、低温化部５２は、キャピラリを用いることで安価に構成することができるが、キャピラリに代えて、例えば膨張弁で構成してもよく、同様の効果を得ることができる。 Note that the refrigerant discharged from the (indoor) heat exchanger 18 to the refrigerant pipe P3 as a result of heat exchange with the indoor air during heating operation must be supplied to the expansion valve 48 in an intermediate temperature and intermediate pressure state. In this case, when the refrigerant that has flowed into the first branched passage P31 at the branch portion S and has become low temperature and low pressure is allowed to join the medium temperature and medium pressure refrigerant that flows through the second branched passage P32, it flows backward. Therefore, it is not possible to merge smoothly. Therefore, the water generator 50 reheats the refrigerant that has passed through the cooling pipe 34 and contributed to the generation of the condensed water. Specifically, on the downstream side of the low-temperature portion 52 provided in the first branch passage P31, the temperature of the refrigerant lowered in the low-temperature portion 52 is reduced to medium-temperature, medium-pressure refrigerant flowing through the second branch passage P32. is used to reheat the refrigerant flowing through the second branch path P32 so as to approach the temperature thereof. The reheating section 54 has, for example, a spiral double-pipe structure formed by a piping section on the downstream side of the cooling pipe 34 and the second branch flow path P32. The refrigerant that has passed through the cooling pipe 34 is heated by the refrigerant and discharged to the refrigerant flow path P33. Then, the second branch flow path P32 that has passed through the reheating section 54, that is, the refrigerant pipe P34 joins the refrigerant flow path P33 through which the reheated refrigerant flows at the junction J. As a result, the low-temperature, low-pressure refrigerant flowing through the first branch passage P31 smoothly joins the medium-temperature, medium-pressure refrigerant flowing through the second branch passage P32 as a result of the reheating treatment, and the refrigerant pipe P4 can enter and be supplied to the expansion valve 48 . That is, it is possible to easily generate condensed water even during cooling operation. Although the low-temperature part 52 can be constructed at a low cost by using a capillary, it may be constructed with, for example, an expansion valve instead of the capillary, and the same effect can be obtained.

なお、冷房運転時には、（室内）熱交換器１８で熱交換を行う際に結露水が発生する。この場合、結露水を水受け部２８に供給してもよい。このとき、過酸化水素３６（加速度過酸化水素３６Ａ）の発生に必要な量以上の結露水が発生する場合がある。この場合、水受け部２８に、例えば水位センサを設け、必要以上の結露水が水受け部２８に流入した場合、ドレンパンの排出口から余分な水を排出するようにしてもよい。なお、水生成部５０は、冷房運転時に熱交換器１８で十分な結露水が生成可能な場合、結露水の生成を一時的に停止してもよい。この場合、例えば、分岐部Ｓおよび合流部Ｊに切替弁を設け、第一の分流路Ｐ３１に冷媒が供給されないようにしてもよい。 It should be noted that condensed water is generated when heat is exchanged in the (indoor) heat exchanger 18 during cooling operation. In this case, the condensed water may be supplied to the water receiver 28 . At this time, an amount of condensed water larger than that required to generate hydrogen peroxide 36 (accelerated hydrogen peroxide 36A) may be generated. In this case, for example, a water level sensor may be provided in the water receiving portion 28 so that when excessive dew condensation water flows into the water receiving portion 28, excess water may be discharged from the outlet of the drain pan. Note that the water generator 50 may temporarily stop the generation of condensed water when the heat exchanger 18 can generate a sufficient amount of condensed water during cooling operation. In this case, for example, switching valves may be provided at the branching portion S and the merging portion J to prevent the refrigerant from being supplied to the first branched flow path P31.

図７は、空気調和装置１０（室内機１０Ａ）の変形例で、オゾン５８を用いて加速度過酸化水素３６Ａの生成効率を向上するシステムを示す例示的かつ模式的な説明図である。図３に示す過酸化水素発生部２２の場合、光触媒フィルタ２６に光源２４から紫外線光を照射し、水酸化物イオン３０を生成、さらにＯＨラジカル３２を生成して、最終的に過酸化水素３６を生成した。 FIG. 7 is a modified example of the air conditioner 10 (indoor unit 10A), and is an exemplary and schematic explanatory diagram showing a system that uses ozone 58 to improve the generation efficiency of the accelerated hydrogen peroxide 36A. In the case of the hydrogen peroxide generator 22 shown in FIG. 3, the photocatalyst filter 26 is irradiated with ultraviolet light from the light source 24 to generate hydroxide ions 30, OH radicals 32, and finally hydrogen peroxide 36. generated.

一方、図７に示す過酸化水素発生部２２Ａは、オゾン発生器５６（オゾン発生部）を用いて、オゾン５８（Ｏ３）を発生し、発生したオゾン５８に基づいて、加速度過酸化水素３６Ａを発生させている。オゾン発生器５６は、例えば、光源２４を挟んで、光触媒フィルタ２６とは逆側で通風路ＷＲの上流側の位置に配置される。 On the other hand, the hydrogen peroxide generator 22A shown in FIG. is causing The ozone generator 56 is arranged, for example, at a position opposite to the photocatalyst filter 26 and upstream of the air passage WR with the light source 24 interposed therebetween.

オゾン５８は、周知のオゾン発生装置を用いて発生させることができる。例えば、誘電体（例えばガラス）を介した電極間に交流電圧を印加して無声放電を発生させることで容易に発生させることができる。このとき、光触媒フィルタ２６には、界面活性剤３８が溶け込んだ水（Ｈ２Ｏ）が毛細管現象により全体に行き渡っている。この状態で、光触媒フィルタ２６に光源２４により紫外線光が照射されると、光触媒によって、オゾン５８は分解され、一重項の酸素が生成される（Ｏ＋Ｏ２）。この一重項の酸素が、光触媒フィルタ２６に存在する水（Ｈ２Ｏ）と反応し、二分子のＯＨラジカル３２を生成する。さらに、生成されたＯＨラジカル３２の周囲には、界面活性剤３８を含む水が存在するため、その水にＯＨラジカル３２が可溶し加速度過酸化水素３６Ａ（Ｈ２Ｏ２）が生成される。 Ozone 58 can be generated using a known ozone generator. For example, it can be easily generated by applying an AC voltage between electrodes via a dielectric (for example, glass) to generate silent discharge. At this time, the water (H 2 O) in which the surfactant 38 is dissolved spreads throughout the photocatalyst filter 26 due to capillary action. In this state, when the photocatalyst filter 26 is irradiated with ultraviolet light from the light source 24, the photocatalyst decomposes the ozone 58 to generate singlet oxygen (O+ O2 ). This singlet oxygen reacts with water (H 2 O) present in the photocatalytic filter 26 to generate bimolecular OH radicals 32 . Furthermore, since water containing surfactant 38 exists around the generated OH radicals 32, the OH radicals 32 are dissolved in the water to generate accelerated hydrogen peroxide 36A (H 2 O 2 ). .

このように、過酸化水素発生部２２Ａにおいて、オゾン５８を予め生成しておくことにより、図３のように、光触媒フィルタ２６に紫外線光を照射することのみで、ＯＨラジカル３２を生成し、過酸化水素３６（加速度過酸化水素３６Ａ）を生成する場合に比べて、より効率的に大量の過酸化水素３６（加速度過酸化水素３６Ａ）を生成することができる。なお、オゾン５８は、濃度が高くなると臭いを感じさせ易くなったり、人体に悪影響を及ぼしたりする場合があるが、本実施形態の場合、オゾン５８は分解されるので、そのような不都合を解消し易い。 Thus, by generating the ozone 58 in advance in the hydrogen peroxide generation unit 22A, as shown in FIG. A large amount of hydrogen peroxide 36 (accelerated hydrogen peroxide 36A) can be produced more efficiently than in the case of producing hydrogen oxide 36 (accelerated hydrogen peroxide 36A). When the concentration of the ozone 58 increases, the ozone 58 tends to give off an odor or adversely affect the human body. easy to do

この場合も過酸化水素発生部２２Ａで発生した加速度過酸化水素３６Ａは、ファン１６の動作によりハウジング１２内部を流れ、光触媒フィルタ２６を通過する風Ｗに乗り室内機１０Ａの外部（室内）に放出される。室内機１０Ａから放出された加速度過酸化水素３６Ａは、空気中に浮遊するウイルス等の表面でプラスイオン（Ｈ＋）とマイナスイオン（Ｏ２ －）が結合し、一部がＯＨラジカル３２に戻る。酸化力の強いＯＨラジカル３２は、ウイルスのたんぱく質の表面から、水素原子（Ｈ）を奪い、非活性化（除菌）する。なお、過酸化水素発生部２２Ａは、界面活性剤３８の投入を省略してもよい。この場合でも、大量の過酸化水素３６を効率的に発生させて除菌を行うことができる。 In this case as well, the accelerated hydrogen peroxide 36A generated by the hydrogen peroxide generating section 22A flows inside the housing 12 due to the operation of the fan 16, and is released outside (indoors) of the indoor unit 10A on the wind W passing through the photocatalytic filter 26. be done. In the accelerated hydrogen peroxide 36A released from the indoor unit 10A, positive ions (H + ) and negative ions (O 2 − ) combine on the surface of viruses or the like floating in the air, and some of them return to OH radicals 32. . The OH radical 32, which has a strong oxidizing power, deprives the surface of the virus protein of hydrogen atoms (H) and inactivates (sterilizes) the virus. It should be noted that the addition of the surfactant 38 to the hydrogen peroxide generating section 22A may be omitted. Even in this case, a large amount of hydrogen peroxide 36 can be efficiently generated for sterilization.

このように、過酸化水素発生部２２Ａによれば、オゾン５８を併用することで、ＯＨラジカル３２を含む加速度過酸化水素３６Ａ（過酸化水素３６）を容易かつ大量に生成可能となる。この場合も、通風路ＷＲに対して十分な広さ（大きさ）の光触媒フィルタ２６を容易に配置可能なので、十分な量の加速度過酸化水素３６Ａ（過酸化水素３６）を発生させることが可能である。その結果、容易な構成で通風路ＷＲから排出される温度調整済みの空気に加速度過酸化水素３６Ａ（過酸化水素３６）を乗せて室内に放出することにより室内の除菌効果の向上が図れる。また、通風路ＷＲに設けられる光触媒フィルタ２６には、充分な水が含浸可能なため、空気中に十分な水分を放出可能であるとともに、放出されたＯＨラジカル３２は除菌処理の結果、水に戻るため、室内に水分を戻すことが可能で、室内の乾燥抑制に寄与できる。前述したように、水を含浸可能な光触媒フィルタ２６は、ハウジング１２の中で比較的容易に大型部品として組み込み易いため、室内の乾燥抑制を容易に実現することができる。 Thus, according to the hydrogen peroxide generator 22A, by using the ozone 58 together, it is possible to easily generate a large amount of the accelerated hydrogen peroxide 36A (hydrogen peroxide 36) containing the OH radicals 32. FIG. Also in this case, since the photocatalyst filter 26 having a sufficient width (size) can be easily arranged with respect to the ventilation path WR, it is possible to generate a sufficient amount of accelerated hydrogen peroxide 36A (hydrogen peroxide 36). is. As a result, the accelerated hydrogen peroxide 36A (hydrogen peroxide 36) is put on the temperature-controlled air discharged from the air passage WR with a simple structure and discharged into the room, thereby improving the sterilization effect in the room. In addition, since the photocatalyst filter 26 provided in the ventilation path WR can be impregnated with sufficient water, it is possible to release sufficient moisture into the air, and the released OH radicals 32 are removed from the water as a result of the sterilization treatment. , it is possible to return the moisture to the room, which contributes to the suppression of dryness in the room. As described above, the water-impregnable photocatalyst filter 26 can be relatively easily incorporated as a large-sized component in the housing 12, so that it is possible to easily suppress indoor drying.

なお、上述した実施形態では、過酸化水素発生部２２，２２Ａをファン１６より下流側に配置したが、これには限られない。例えば、過酸化水素発生部２２，２２Ａをファン１６より上流側に配置することもできる。つまり、過酸化水素発生部２２，２２Ａは、通風路ＷＲに配置されていればよい。また、上述した実施形態では、例えば住宅用の空気調和装置１０を想定して説明したが、各種空気調和装置１０についても同様に本実施形態の構成が適用可能である。例えば、業務用の空気調和装置や車両や航空機、船舶等設けられる空気調和装置についても本実施形態の構成が適用可能であり、同様の効果を得ることができる。 Although the hydrogen peroxide generators 22 and 22A are arranged downstream of the fan 16 in the above-described embodiment, the arrangement is not limited to this. For example, the hydrogen peroxide generators 22 and 22A can be arranged upstream of the fan 16. FIG. In other words, the hydrogen peroxide generators 22, 22A may be arranged in the ventilation passage WR. In the above-described embodiment, the air conditioner 10 for residential use is assumed, for example, but the configuration of the present embodiment can also be applied to various air conditioners 10 in the same manner. For example, the configuration of the present embodiment can be applied to commercial air conditioners and air conditioners installed in vehicles, aircraft, ships, etc., and similar effects can be obtained.

以上、本発明の実施形態を説明したが、上記実施形態はあくまで一例であって、発明の範囲を限定することは意図していない。上記実施形態は、様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。上記実施形態は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 Although the embodiment of the present invention has been described above, the above embodiment is merely an example and is not intended to limit the scope of the invention. The above embodiments can be implemented in various forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. The above embodiments are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

１０…空気調和装置、１０Ａ…室内機、１０Ｂ…室外機、１２…ハウジング、１２ａ…吸込み口、１２ｂ…吹出し口、１６…ファン、１８…熱交換器、２２…過酸化水素発生部、２４…光源、２６…光触媒フィルタ、２８…水受け部、３２…ＯＨラジカル、３４…冷却管、３６…過酸化水素、３６Ａ…加速度過酸化水素、３８…界面活性剤、５０…水生成部、５２…低温化部（キャピラリ）、５４…再加熱部（二重排管部）、５６…オゾン発生器、５８…オゾン。 DESCRIPTION OF SYMBOLS 10... Air conditioner, 10A... Indoor unit, 10B... Outdoor unit, 12... Housing, 12a... Inlet, 12b... Outlet, 16... Fan, 18... Heat exchanger, 22... Hydrogen peroxide generator, 24... Light source 26 Photocatalyst filter 28 Water receiver 32 OH radical 34 Cooling tube 36 Hydrogen peroxide 36A Accelerated hydrogen peroxide 38 Surfactant 50 Water generator 52 Low-temperature part (capillary), 54... Reheating part (double exhaust tube part), 56... Ozone generator, 58... Ozone.

Claims (5)

ハウジングと、
前記ハウジングの外部の空気を当該ハウジングの内部の通風路に取り入れ、熱交換器を通過させて前記ハウジングの外部に排出させるファンと、
前記通風路の一部で前記空気の通過を許容するように設けられた、光触媒を含む含水可能な光触媒フィルタと、
前記光触媒フィルタに水を供給可能な水受け部と、
前記光触媒フィルタに紫外線光を照射可能な光源と、
を備えた空気調和装置。 a housing;
a fan for taking in air from the outside of the housing into a ventilation passage inside the housing, passing the air through a heat exchanger, and discharging the air to the outside of the housing;
a water impregnable photocatalyst filter containing a photocatalyst, provided to allow passage of the air in a portion of the air passage;
a water receiver capable of supplying water to the photocatalyst filter;
a light source capable of irradiating the photocatalyst filter with ultraviolet light;
Air conditioner with. 前記水受け部は、当該水受け部に供給される前記水に継続的に界面活性成分を供給可能な界面活性剤を保持可能である、請求項１に記載の空気調和装置。 2. The air conditioner according to claim 1, wherein said water receiving portion is capable of holding a surfactant capable of continuously supplying a surface active component to said water supplied to said water receiving portion. 前記ハウジングの前記空気の排出側に、少なくとも暖房運転時に前記ハウジングの内部を流れる空気から水を生成する水生成部が設けられている、請求項１または請求項２に記載の空気調和装置。 3. The air conditioning apparatus according to claim 1, further comprising a water generator that generates water from the air flowing through the housing at least during heating operation, on the air discharge side of the housing. 前記水生成部は、
前記熱交換器の下流側で冷媒の流れを第一の分流路と第二の分流路に分岐させる分岐部と、
前記第一の分流路に設けられて前記冷媒の温度を結露水の発生可能温度以下まで低下させて前記水受け部に供給する結露水を生成する低温化部と、
前記第二の分流路に設けられて前記低温化部の下流側で当該低温化部で低下した前記冷媒の温度を前記第二の分流路を流れる前記冷媒の温度に接近させて前記第二の分流路を流れる前記冷媒に合流させられるように加熱する再加熱部と、
を含む、請求項３に記載の空気調和装置。 The water generation unit is
a branching part that branches the flow of the refrigerant into a first branched channel and a second branched channel on the downstream side of the heat exchanger;
a temperature lowering unit provided in the first branch passage for reducing the temperature of the refrigerant to a temperature at which condensed water can be generated or less to generate condensed water to be supplied to the water receiving unit;
On the downstream side of the low-temperature portion provided in the second branch passage, the temperature of the refrigerant lowered in the low-temperature portion is brought close to the temperature of the refrigerant flowing through the second branch passage, and the second a reheating unit that heats the refrigerant so that it merges with the refrigerant flowing through the branch flow path;
The air conditioner according to claim 3, comprising: 前記光源を挟んで、前記光触媒フィルタとは逆側で前記通風路の上流側の位置にオゾン発生部を備える、請求項１から請求項４のいずれか１項に記載の空気調和装置。 5. The air conditioner according to any one of claims 1 to 4, further comprising an ozone generating section on the opposite side of the photocatalyst filter and on the upstream side of the ventilation passage with the light source interposed therebetween.
JP2021045186A 2021-03-18 2021-03-18 air conditioner Pending JP2022144265A (en)

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