JP2011112308A

JP2011112308A - Sterilization structure of tank and air conditioning hot water supply system

Info

Publication number: JP2011112308A
Application number: JP2009270580A
Authority: JP
Inventors: Masahito Watanabe; 将人渡辺; Misao Fujitsuka; 操藤塚; Kenju Chiba; 健樹千葉; Kazutoshi Ota; 和利太田
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Appliances Inc
Priority date: 2009-11-27
Filing date: 2009-11-27
Publication date: 2011-06-09

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sterilization structure of a tank, incorporated in the tank for storing liquid while maintaining the liquid at predetermined boiling temperature, and enabling secure sterilization by using ultraviolet rays, and also to provide an air conditioning hot water supply system. <P>SOLUTION: The inside of a hot water storage tank 9 has: a long ultraviolet germicidal lamp 92 extended from the upper part to the lower part; a flow passage 93a for running hot water along the side face 92a of the ultraviolet germicidal lamp 92 while turning the hot water around the ultraviolet germicidal lamp 92; and a retention region 9C formed on the lower side of the tip 92b of the ultraviolet germicidal lamp 92 and communicated with the flow passage 93a. In the sterilization structure of the tank, hot water running in the flow passage 93a is exposed to ultraviolet rays irradiated from the side face 92a of the ultraviolet germicidal lamp 92, and hot water in the retention region 9C is exposed to ultraviolet rays irradiated from the tip 92b of the ultraviolet germicidal lamp 92. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、加熱した湯水を貯湯する貯湯タンクの殺菌構造と、その殺菌構造が組み込まれた貯湯タンクを備える空調給湯システムに関する。 The present invention relates to a sterilization structure for a hot water storage tank for storing heated hot water and an air conditioning hot water supply system including a hot water storage tank in which the sterilization structure is incorporated.

例えば、利用者の居住空間を冷暖房する機能及び利用者に湯水を給湯する機能を有する空調給湯システムに備わって熱源によって加熱された湯水を貯湯する貯湯タンクに、摂氏４５〜６０℃の湯水が貯湯されると、レジオネラ菌や大腸菌などの雑菌が繁殖しやすくなる。
そのため、貯湯タンクに殺菌構造を備えて、繁殖する雑菌を殺菌することは広く実施されている。そして、貯湯タンクに備わる殺菌構造としては、加熱器によって湯水を加熱殺菌する殺菌構造が主流になっている。
しかしながら、加熱殺菌する殺菌構造には、加熱器として電気ヒータが用いられることから、消費電力が大きい、貯湯タンク全体の殺菌に時間がかかる、という問題がある。 For example, hot water of 45 to 60 ° C. is stored in a hot water storage tank for storing hot water heated by a heat source in an air conditioning hot water supply system having a function of cooling and heating a user's living space and a function of supplying hot water to the user. If it is done, bacteria such as Legionella and Escherichia coli will easily propagate.
Therefore, it is widely practiced that the hot water storage tank has a sterilization structure to sterilize the germs that propagate. And as a sterilization structure with which a hot water storage tank is equipped, the sterilization structure which heat-sterilizes hot water with a heater has become mainstream.
However, since the sterilization structure for heat sterilization uses an electric heater as a heater, there is a problem that power consumption is large and it takes time to sterilize the entire hot water storage tank.

一方、冷水の殺菌には、紫外線を利用した殺菌が広く実施されている。そこで、貯湯タンクに貯湯される湯水を紫外線で殺菌する殺菌構造が考えられている。
例えば、湯水に繁殖する代表的な雑菌のレジオネラ菌を紫外線で殺菌する場合、９９．９％のレジオネラ菌を殺菌するためには、１平方センチメートルあたり３．０ｍＷ・ｓｅｃ以上の紫外線照射量が必要になることがわかっている。 On the other hand, sterilization using ultraviolet rays is widely performed for sterilization of cold water. Therefore, a sterilization structure for sterilizing hot water stored in a hot water storage tank with ultraviolet rays has been considered.
For example, in the case of sterilizing 99.9% of Legionella, which is a typical bacteria that propagates in hot water with ultraviolet rays, an ultraviolet irradiation amount of 3.0 mW · sec or more per square centimeter is required to sterilize 99.9% of Legionella bacteria. I know that

したがって、大量の湯水が貯湯される貯湯タンクを紫外線で殺菌する場合、大出力の紫外線灯が必要になり、消費電力の増大、殺菌装置の大型化、紫外線の発熱や防爆管理の困難さ、などの問題が発生する。 Therefore, when sterilizing a hot water storage tank that stores a large amount of hot water with ultraviolet rays, a high-power ultraviolet lamp is required, increasing power consumption, increasing the size of the sterilizer, heating of ultraviolet rays, difficulty in explosion-proof management, etc. Problems occur.

この問題を解決するため、例えば、特許文献１には、紫外線を液体の殺菌処理に有効に照射できる殺菌装置が開示されている。しかしながら、特許文献１に開示される技術を貯湯タンクの殺菌に利用する場合、貯湯タンクと殺菌装置の接続部での放熱によって、接続部で湯水の温度が低下するという問題がある。
また、殺菌装置の内部に滞留する湯水の温度維持ができないという問題がある。 In order to solve this problem, for example, Patent Document 1 discloses a sterilization apparatus that can effectively irradiate ultraviolet light to liquid sterilization treatment. However, when the technique disclosed in Patent Literature 1 is used for sterilization of a hot water storage tank, there is a problem that the temperature of the hot water decreases at the connection portion due to heat radiation at the connection portion between the hot water storage tank and the sterilization apparatus.
Moreover, there exists a problem that the temperature of the hot water which retains inside a sterilizer cannot be maintained.

特開平３−２４２２８６号公報JP-A-3-242286

そこで、本発明は、液体を所定の沸き上げ温度に維持しながら貯液できるタンクに組み込まれ、紫外線を利用して確実に殺菌できるタンクの殺菌構造、及び空調給湯システムを提供することを課題とする。 Accordingly, the present invention has an object to provide a tank sterilization structure that can be stored in a tank that can store liquid while maintaining the liquid at a predetermined boiling temperature, and that can reliably sterilize using ultraviolet rays, and an air conditioning hot water supply system. To do.

前記課題を解決するため、本発明は、液体がタンクから取り出されるときに流れる流路及び流路を流れる前に液体が滞留する領域で、液体が紫外線に露光するタンクの殺菌構造とする。
また、そのタンクの殺菌構造が組み込まれたタンクを備える空調給湯システムとする。 In order to solve the above-mentioned problems, the present invention provides a sterilization structure for a tank in which the liquid is exposed to ultraviolet rays in a flow path when the liquid is taken out from the tank and an area where the liquid stays before flowing through the flow path.
Moreover, it is set as the air-conditioning hot-water supply system provided with the tank incorporating the sterilization structure of the tank.

本発明によると、液体を所定の沸き上げ温度に維持しながら貯液できるタンクに組み込まれ、紫外線を利用して確実に殺菌できるタンクの殺菌構造、及び空調給湯システムを提供できる。 ADVANTAGE OF THE INVENTION According to this invention, it can incorporate in the tank which can store liquid, maintaining a liquid at predetermined boiling temperature, and can provide the sterilization structure of a tank which can be sterilized reliably using an ultraviolet-ray, and an air-conditioning hot-water supply system.

空調給湯システムの一構成例を示す図である。It is a figure showing an example of 1 composition of an air-conditioning hot-water supply system. 貯湯タンクの内部構造を示す断面図である。It is sectional drawing which shows the internal structure of a hot water storage tank. （ａ）は、湯水が流路を流れる状態を示す断面図、（ｂ）は、湯水が滞留領域で対流する状態を示す断面図である。(A) is sectional drawing which shows the state in which hot water flows through a flow path, (b) is sectional drawing which shows the state in which hot water convects in a retention area | region. （ａ）、（ｂ）は、流路の別の形態を示す図である。(A), (b) is a figure which shows another form of a flow path. 流路の入口部に備わる流量調節弁を示す断面図である。It is sectional drawing which shows the flow control valve with which the inlet_port | entrance part of a flow path is equipped.

以下、本発明の実施形態について、適宜図を参照して詳細に説明する。
本実施形態に係るタンクの殺菌構造は、例えば図１に示す空調給湯システム１００に備わる貯湯タンク９に組み込まれている。
空調給湯システム１００は、湯水（液体）を沸き上げる熱源としてのヒートポンプユニット３０、沸き上がった高温の湯水を貯湯（貯液）する貯湯ユニット４０（貯液ユニット）、利用者の居住空間を冷暖房する空調ユニット６０、及び運転制御装置５０を備えて構成される。
以下の説明において、「高温」は沸き上げ温度を示し、「低温」は沸き上げ温度より低温を示す。そして、沸き上げ温度は、例えば、空調給湯システム１００の仕様として予め設定されている温度とする。
なお、空調給湯システム１００は、水道水などの水をヒートポンプユニット３０等の熱源で沸き上げたお湯（湯水）を貯湯ユニット４０の貯湯タンク９に貯湯する装置であるが、水以外の液体を熱源で沸き上げてタンクにためる装置にも本実施形態を適用できる。
すなわち、湯水は液体の一例であり、貯湯ユニット４０及び貯湯タンク９は、それぞれ貯液ユニット及び貯液タンクの一例である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The tank sterilization structure according to the present embodiment is incorporated in, for example, a hot water storage tank 9 provided in the air conditioning and hot water supply system 100 shown in FIG.
The air-conditioning hot water supply system 100 includes a heat pump unit 30 as a heat source for boiling hot water (liquid), a hot water storage unit 40 (liquid storage unit) for storing hot hot water that has been boiled, and air conditioning for cooling and heating a living space of a user. A unit 60 and an operation control device 50 are provided.
In the following description, “high temperature” indicates a boiling temperature, and “low temperature” indicates a temperature lower than the boiling temperature. And let boiling temperature be the temperature preset as the specification of the air-conditioning hot-water supply system 100, for example.
The air-conditioning hot water supply system 100 is a device that stores hot water (hot water) obtained by boiling water such as tap water with a heat source such as the heat pump unit 30 in the hot water storage tank 9 of the hot water storage unit 40, but liquid other than water is used as a heat source. The present embodiment can also be applied to an apparatus that boils and accumulates in a tank.
That is, hot water is an example of a liquid, and the hot water storage unit 40 and the hot water storage tank 9 are examples of a liquid storage unit and a liquid storage tank, respectively.

ヒートポンプユニット３０は、圧縮機１、加熱冷媒熱交換器１０、冷暖房用熱交換器６１、膨張弁３（膨張機構）、及び空気熱交換器２（蒸発器ともいう）が冷媒管３０ａで接続されて備わり、封入された冷媒（二酸化炭素など）が循環するように構成される第１ユニットと、圧縮機２０１、冷暖房用熱交換器６１、膨張弁２０３（膨張機構）、及び空気熱交換器２０２が冷媒管３０ｂで接続されて備わり、封入された冷媒が循環するように構成される第２ユニットを含んでいる。
加熱冷媒熱交換器１０は貯湯ユニット４０の貯湯タンク９内に備わり、冷媒管１０ａを流れる高温の冷媒と、貯湯タンク９内に滞留している低温の水との間で熱交換が行われるように構成されている。
冷暖房用熱交換器６１は加熱冷媒熱交換器１０と並列に配置されて空調ユニット６０に備わり、冷媒管６１ａを流れる冷媒と、冷暖房機６３に供給される水（以下、冷暖房用水と称する）との間で熱交換が行われるように構成されている。
なお、第１ユニットには、加熱冷媒熱交換器１０の冷媒管１０ａの冷媒の流れを遮断する遮断弁６６が備わっている。
遮断弁６６は運転制御装置５０によって開閉が制御され、遮断弁６６が閉弁すると、冷媒管１０ａの冷媒の流れが遮断される。 The heat pump unit 30 includes a compressor 1, a heating refrigerant heat exchanger 10, an air conditioner heat exchanger 61, an expansion valve 3 (expansion mechanism), and an air heat exchanger 2 (also referred to as an evaporator) connected by a refrigerant pipe 30a. A first unit configured to circulate an enclosed refrigerant (such as carbon dioxide), a compressor 201, an air conditioner heat exchanger 61, an expansion valve 203 (expansion mechanism), and an air heat exchanger 202. Is connected to the refrigerant pipe 30b and includes a second unit configured to circulate the enclosed refrigerant.
The heating refrigerant heat exchanger 10 is provided in the hot water storage tank 9 of the hot water storage unit 40 so that heat exchange is performed between the high temperature refrigerant flowing through the refrigerant pipe 10a and the low temperature water staying in the hot water storage tank 9. It is configured.
The air conditioner heat exchanger 61 is disposed in parallel with the heating refrigerant heat exchanger 10 and is provided in the air conditioning unit 60. The refrigerant flows through the refrigerant pipe 61a, and water supplied to the air conditioner 63 (hereinafter referred to as air conditioning air). Heat exchange is performed between the two.
The first unit is provided with a shutoff valve 66 that shuts off the refrigerant flow in the refrigerant pipe 10a of the heating refrigerant heat exchanger 10.
The shutoff valve 66 is controlled to be opened and closed by the operation control device 50. When the shutoff valve 66 is closed, the refrigerant flow in the refrigerant pipe 10a is shut off.

また、第１ユニットには、空気熱交換器２を流通する冷媒を冷却する外気を取り込む送風ファン４ａ、及び送風ファン４ａを駆動するファンモータ４が備わり、第２ユニットには、空気熱交換器２０２を流通する冷媒を冷却する外気を取り込む送風ファン２０４ａ、及び送風ファン２０４ａを駆動するファンモータ２０４が備わっている。
空気熱交換器２は、ファンモータ４で回転駆動する送風ファン４ａで外気を取り込み、外気と冷媒の間で熱交換する。
同様に、空気熱交換器２０２は、ファンモータ２０４で回転駆動する送風ファン２０４ａで外気を取り込み、外気と冷媒の間で熱交換する。 In addition, the first unit includes a blower fan 4a that takes in outside air that cools the refrigerant flowing through the air heat exchanger 2, and a fan motor 4 that drives the blower fan 4a. The second unit includes an air heat exchanger. A blower fan 204a that takes in outside air that cools the refrigerant flowing through 202 and a fan motor 204 that drives the blower fan 204a are provided.
The air heat exchanger 2 takes in outside air with a blower fan 4a that is rotationally driven by a fan motor 4, and exchanges heat between the outside air and the refrigerant.
Similarly, the air heat exchanger 202 takes in outside air by the blower fan 204a that is rotationally driven by the fan motor 204, and exchanges heat between the outside air and the refrigerant.

第１ユニットに備わる圧縮機１は容量制御が可能であり、例えば、多量の湯水を沸き上げる場合には大きな容量で運転される。
圧縮機１は、ＰＷＭ（Pulse Width Modulation）制御、電圧制御（例えば、ＰＡＭ（Pulse Amplitude Modulation）制御）、及びこれらの組み合わせによる制御によって、低速（例えば、７００ｒｐｍ）から高速（例えば、７０００ｒｐｍ）の間で回転速度が制御できるように構成されている。 The capacity of the compressor 1 provided in the first unit can be controlled. For example, when a large amount of hot water is boiled, the compressor 1 is operated with a large capacity.
The compressor 1 is controlled between a low speed (for example, 700 rpm) and a high speed (for example, 7000 rpm) by PWM (Pulse Width Modulation) control, voltage control (for example, PAM (Pulse Amplitude Modulation) control), and a combination thereof. The rotation speed can be controlled with the.

また、圧縮機１で圧縮された冷媒は、四方弁５によって流れる方向が切り替えられる。
四方弁５は運転制御装置５０によって制御され、圧縮機１で圧縮された冷媒が加熱冷媒熱交換器１０または冷暖房用熱交換器６１に流れるとともに、空気熱交換器２で冷却された冷媒が圧縮機１に流れる状態（以下、第１状態と称する）と、圧縮機１で圧縮された冷媒が空気熱交換器２に流れるとともに、冷暖房用熱交換器６１で気化した冷媒が圧縮機１に流れる状態（以下、第２状態と称する）が選択的に切り替わる。 In addition, the flow direction of the refrigerant compressed by the compressor 1 is switched by the four-way valve 5.
The four-way valve 5 is controlled by the operation control device 50, and the refrigerant compressed by the compressor 1 flows to the heating refrigerant heat exchanger 10 or the air conditioner heat exchanger 61 and the refrigerant cooled by the air heat exchanger 2 is compressed. When the refrigerant flows into the machine 1 (hereinafter referred to as the first state), the refrigerant compressed by the compressor 1 flows to the air heat exchanger 2 and the refrigerant vaporized by the air conditioner heat exchanger 61 flows to the compressor 1. A state (hereinafter referred to as a second state) is selectively switched.

同様に、第２ユニットに備わる圧縮機２０１は容量制御が可能であり、例えば、冷暖房機６３を高い冷暖房能力で運転するときには、大きな容量で運転される。
そして、第２ユニットの圧縮機２０１で圧縮された冷媒は、四方弁２０５によって流れる方向が切り替えられる。
第２ユニットの四方弁２０５は運転制御装置５０によって制御され、圧縮機２０１で圧縮された冷媒が冷暖房用熱交換器６１に流れるとともに、空気熱交換器２０２で冷却された冷媒が圧縮機２０１に流れる第１状態と、圧縮機２０１で圧縮された冷媒が空気熱交換器２０２に流れるとともに、冷暖房用熱交換器６１で気化した冷媒が圧縮機２０１に流れる第２状態が選択的に切り替わる。
因みに、図１の四方弁５は第１状態を示し、四方弁２０５は第２状態を示している。 Similarly, the capacity of the compressor 201 provided in the second unit can be controlled. For example, when the air conditioner 63 is operated with high air conditioning capacity, the compressor 201 is operated with a large capacity.
The refrigerant compressed by the compressor 201 of the second unit is switched by the four-way valve 205.
The four-way valve 205 of the second unit is controlled by the operation control device 50, and the refrigerant compressed by the compressor 201 flows to the air conditioner heat exchanger 61 and the refrigerant cooled by the air heat exchanger 202 is supplied to the compressor 201. The first state flowing and the second state in which the refrigerant compressed by the compressor 201 flows to the air heat exchanger 202 and the refrigerant vaporized by the air conditioner heat exchanger 61 flows to the compressor 201 are selectively switched.
Incidentally, the four-way valve 5 of FIG. 1 shows the first state, and the four-way valve 205 shows the second state.

第１ユニットの膨張弁３には、開度調整の応答速度が速い電動膨張弁が使用され、加熱冷媒熱交換器１０から導入される冷媒を減圧して蒸発しやすい状態にする。
また、膨張弁３は、弁開度の調節によって、冷媒管３０ａを流れる冷媒の流量を調節できる。
例えば、空気熱交換器２に着霜した場合に膨張弁３の弁開度が大きくなると、中温冷媒を大量に空気熱交換器２へ送り込むことができ、空気熱交換器２を除霜できる。
同様に、第２ユニットの膨張弁２０３にも開度調整の応答速度が速い電動膨張弁が使用され、冷媒管３０ｂを流れる冷媒の流量を調節できる。
膨張弁３、及び膨張弁２０３の弁開度は、運転制御装置５０によってそれぞれ単独に制御される。 As the expansion valve 3 of the first unit, an electric expansion valve having a quick response speed of opening adjustment is used, and the refrigerant introduced from the heating refrigerant heat exchanger 10 is decompressed to be easily evaporated.
The expansion valve 3 can adjust the flow rate of the refrigerant flowing through the refrigerant pipe 30a by adjusting the valve opening.
For example, if the air heat exchanger 2 is frosted and the valve opening of the expansion valve 3 increases, a large amount of medium temperature refrigerant can be sent to the air heat exchanger 2, and the air heat exchanger 2 can be defrosted.
Similarly, the expansion valve 203 of the second unit uses an electric expansion valve with a quick response speed of opening adjustment, and can adjust the flow rate of the refrigerant flowing through the refrigerant pipe 30b.
The valve openings of the expansion valve 3 and the expansion valve 203 are individually controlled by the operation control device 50.

貯湯ユニット４０には、給水金具６、減圧弁７、給水水量センサ８、貯湯タンク９（タンク）、湯水混合弁１１、及び出湯金具１２が、この順に水配管４０ａを介して接続されている。 The hot water storage unit 40 is connected with a water supply fitting 6, a pressure reducing valve 7, a water supply amount sensor 8, a hot water storage tank 9 (tank), a hot water mixing valve 11, and a hot water supply fitting 12 in this order via a water pipe 40a.

貯湯タンク９は、貯湯運転によって加熱された高温の湯水（液体）を貯湯するためのタンクであり、上部には、水配管４０ａ、湯水混合弁１１、及び出湯金具１２を介して台所蛇口等の給湯栓１３が給湯端末として接続される。
なお、給湯端末は給湯栓１３のほか、例えば浴室に備わる図示しない蛇口や図示しないシャワーヘッドであってもよい。 The hot water storage tank 9 is a tank for storing hot hot water (liquid) heated by a hot water storage operation, and the upper part thereof is a kitchen faucet or the like via a water pipe 40 a, a hot water mixing valve 11, and a tapping metal fitting 12. A hot-water tap 13 is connected as a hot-water supply terminal.
The hot water supply terminal may be, for example, a faucet (not shown) provided in the bathroom or a shower head (not shown) in addition to the hot water tap 13.

また、貯湯タンク９の下部には、水配管４０ａ、給水金具６、減圧弁７、給水水量センサ８を介して図示しない水道などの給水源が接続される。給水金具６は、図示しない給水源に接続され、低温の水が図示しない給水源から貯湯タンク９の下部に給水される。
さらに、貯湯タンク９には、貯湯される湯水の温度を計測するための複数のタンクサーミスタ９ａが備わっている。 A water supply source such as a water supply (not shown) is connected to the lower part of the hot water storage tank 9 through a water pipe 40 a, a water supply fitting 6, a pressure reducing valve 7, and a water supply water amount sensor 8. The water supply fitting 6 is connected to a water supply source (not shown), and low-temperature water is supplied from the water supply source (not shown) to the lower part of the hot water storage tank 9.
Further, the hot water storage tank 9 is provided with a plurality of tank thermistors 9a for measuring the temperature of the hot water stored.

なお、貯湯運転は、低温の湯水をヒートポンプユニット３０で沸き上げ、高温の湯水として貯湯タンク９に貯湯する運転を示す。
そして、貯湯運転していないときに利用者に湯水を給湯する運転を給湯運転と称する。 The hot water storage operation refers to an operation in which low temperature hot water is boiled by the heat pump unit 30 and stored in the hot water storage tank 9 as high temperature hot water.
An operation for supplying hot water to the user when the hot water storage operation is not performed is referred to as a hot water supply operation.

減圧弁７は、図示しない給水源から供給される低温の水を減圧して、貯湯ユニット４０に流通させる機能を有し、給水水量センサ８は、図示しない給水源から供給される低温の水の流量を検出する機能を有する。 The pressure reducing valve 7 has a function of depressurizing low-temperature water supplied from a water supply source (not shown) and distributing it to the hot water storage unit 40. The water supply amount sensor 8 is a low-temperature water supplied from a water supply source (not shown). It has a function to detect the flow rate.

湯水混合弁１１は、貯湯タンク９から取り出された高温の湯水に、図示しない給水源から供給される低温の水を混合する機能を有する。
湯水混合弁１１は、弁開度の調節によって、貯湯タンク９から取り出された高温の湯水に混合する低温の水の流量を調節し、給湯栓１３から利用者に供給される湯水の温度（以下、給湯温度と称する）を調節する。
湯水混合弁１１の弁開度は、運転制御装置５０によって制御される。 The hot water mixing valve 11 has a function of mixing low temperature water supplied from a water supply source (not shown) with high temperature hot water taken out from the hot water storage tank 9.
The hot water mixing valve 11 adjusts the flow rate of the low temperature water mixed with the high temperature hot water taken out from the hot water storage tank 9 by adjusting the valve opening, and the temperature of the hot water supplied to the user from the hot water tap 13 (hereinafter referred to as “hot water temperature”). , Referred to as hot water supply temperature).
The valve opening degree of the hot and cold mixing valve 11 is controlled by the operation control device 50.

空調ユニット６０は、利用者の居住空間に備わる冷暖房機６３に供給される冷暖房用水と冷媒が熱交換する冷暖房用熱交換器６１、冷暖房用水が循環するための冷暖房水管６０ａ、及び冷暖房用水を冷暖房水管６０ａに循環させるためのポンプ６２を含んで構成される。
冷暖房用熱交換器６１には、冷媒が流れる冷媒管６１ａと冷暖房用水が流れる水配管６１ｂが備わり、冷媒管６１ａを流れる冷媒と水配管６１ｂを流れる冷暖房用水の間で熱交換が行われる。 The air-conditioning unit 60 heats and cools the air-conditioning water supplied to the air-conditioning machine 63 provided in the user's living space, the air-conditioning heat exchanger 61 that exchanges heat between the refrigerant and the refrigerant, the air-conditioning water pipe 60a for circulating the air-conditioning water, and the air-conditioning water A pump 62 for circulating the water pipe 60a is included.
The air conditioner heat exchanger 61 includes a refrigerant pipe 61a through which refrigerant flows and a water pipe 61b through which air for cooling and heating flows, and heat exchange is performed between the refrigerant flowing through the refrigerant pipe 61a and the air for cooling and heating through the water pipe 61b.

冷暖房用熱交換器６１に高温の冷媒が流れると、冷暖房機６３には加熱された冷暖房用水が供給されて居住空間を暖房することができ、冷暖房用熱交換器６１に低温の冷媒が流れると、冷暖房機６３には冷却された冷暖房用水が供給されて冷暖房機６３は居住空間を暖房できる。
冷暖房用熱交換器６１に高温の冷媒が流れて冷暖房機６３が居住空間を暖房する空調給湯システム１００の運転を暖房運転と称し、冷暖房用熱交換器６１に低温の冷媒が流れて冷暖房機６３が居住空間を冷房する空調給湯システム１００の運転を冷房運転と称する。 When a high-temperature refrigerant flows into the air conditioner heat exchanger 61, the air-conditioner 63 can be supplied with heated air-conditioning water to heat the living space. When the low-temperature refrigerant flows into the air conditioner heat exchanger 61, The air conditioning unit 63 is supplied with cooled air conditioning water, and the air conditioning unit 63 can heat the living space.
The operation of the air-conditioning hot water supply system 100 in which the high-temperature refrigerant flows into the air-conditioning heat exchanger 61 and the air-conditioning / heating unit 63 heats the living space is referred to as heating operation, and the low-temperature refrigerant flows into the air-conditioning / heat-heating heat exchanger 61. The operation of the air conditioning and hot water supply system 100 that cools the living space is referred to as a cooling operation.

なお、冷暖房用熱交換器６１には２系統の冷媒管６１ａが備わり、１つの系統の冷媒管６１ａは第１ユニットと冷媒管３０ａを介して接続され、他の１つの系統の冷媒管６１ａは第２ユニットと冷媒管３０ｂを介して接続される。
また、第１ユニットと接続される冷媒管６１ａには、遮断弁６５が備わっている。
遮断弁６５は運転制御装置５０によって開閉が制御され、遮断弁６５が閉弁すると、第１ユニットに接続される冷媒管６１ａの冷媒の流れが遮断される。 The air conditioner heat exchanger 61 includes two refrigerant pipes 61a, one refrigerant pipe 61a is connected to the first unit via the refrigerant pipe 30a, and the other one refrigerant pipe 61a is The second unit is connected to the refrigerant pipe 30b.
The refrigerant pipe 61a connected to the first unit is provided with a shutoff valve 65.
The shutoff valve 65 is controlled to be opened and closed by the operation control device 50. When the shutoff valve 65 is closed, the refrigerant flow in the refrigerant pipe 61a connected to the first unit is shut off.

運転制御装置５０は、圧縮機１，２０１の回転速度、膨張弁３，２０３の弁開度、ファンモータ４，２０４の運転・停止、四方弁５，２０５の状態、湯水混合弁１１の弁開度、遮断弁６５の開閉、及び遮断弁６６の開閉をそれぞれ制御して、空調給湯システム１００の冷房運転、暖房運転、貯湯運転、及び給湯運転を制御する。
また、運転制御装置５０には、利用者が給湯温度を設定するための図示しない温度調節機能が備わり、利用者が給湯温度を設定可能に構成される。 The operation control device 50 includes the rotational speed of the compressors 1, 201, the opening degree of the expansion valves 3, 203, the operation / stop of the fan motors 4, 204, the state of the four-way valves 5, 205, the valve opening of the hot water mixing valve 11. The opening / closing of the shutoff valve 65 and the opening / closing of the shutoff valve 66 are controlled to control the cooling operation, heating operation, hot water storage operation, and hot water supply operation of the air conditioning and hot water supply system 100.
Further, the operation control device 50 is provided with a temperature adjustment function (not shown) for the user to set the hot water supply temperature, so that the user can set the hot water supply temperature.

以上のように構成される空調給湯システム１００を給湯運転する場合、運転制御装置５０は、予め設定される給湯温度に応じて湯水混合弁１１の弁開度を調節する。
利用者が給湯栓１３を開くと、図示しない給水源の水圧によって、貯湯タンク９の上部に滞留している高温の湯水が貯湯タンク９の上部から湯水混合弁１１に向かって押し出される。
貯湯タンク９から押し出された高温の湯水は湯水混合弁１１に流れ込み、図示しない給水源から供給される低温の水と混合する。 When the hot water supply operation of the air conditioning hot water supply system 100 configured as described above is performed, the operation control device 50 adjusts the valve opening degree of the hot water mixing valve 11 in accordance with a preset hot water supply temperature.
When the user opens the hot water tap 13, hot hot water staying in the upper part of the hot water storage tank 9 is pushed out from the upper part of the hot water storage tank 9 toward the hot water / water mixing valve 11 by the water pressure of a water supply source (not shown).
Hot hot water pushed out from the hot water storage tank 9 flows into the hot water mixing valve 11 and mixes with low temperature water supplied from a water supply source (not shown).

湯水混合弁１１の弁開度は給湯温度に応じて設定されていることから、湯水混合弁１１で低温の水と混合した高温の湯水は、給湯温度の湯水となって給湯栓１３から利用者に給湯される。 Since the opening degree of the hot water mixing valve 11 is set according to the hot water supply temperature, the hot hot water mixed with the low temperature water by the hot water mixing valve 11 becomes hot water at the hot water supply temperature from the hot water tap 13 to the user. Hot water is supplied.

一方、貯湯タンク９の下部には、押し出された高温の湯水の量に相当する量の低温の水が、図示しない給水源から給水（補給）される。
貯湯タンク９の上部に滞留する高温の湯水と貯湯タンク９の下部に補給される低温の水の間には境界層が形成され、高温の湯水と低温の水は混合することなく分離した状態になる。そして、貯湯タンク９の内部は境界層より上部が高温で下部が低温の状態になる。
このように、給湯栓１３から給湯温度の湯水が利用者に給湯されるように、運転制御装置５０は空調給湯システム１００を給湯運転する。 On the other hand, in the lower part of the hot water storage tank 9, low temperature water corresponding to the amount of hot hot water pushed out is supplied (supplemented) from a water supply source (not shown).
A boundary layer is formed between the hot water staying in the upper part of the hot water storage tank 9 and the low temperature water replenished in the lower part of the hot water storage tank 9, and the hot hot water and the low temperature water are separated without mixing. Become. And the inside of the hot water storage tank 9 is in a state where the upper part is higher than the boundary layer and the lower part is low.
In this manner, the operation control device 50 performs the hot water supply operation of the air conditioning hot water supply system 100 so that hot water having a hot water supply temperature is supplied to the user from the hot water tap 13.

また、空調給湯システム１００を貯湯運転する場合、運転制御装置５０は、開始時には徐々に第１ユニットの圧縮機１の回転速度を上昇させ、加熱立ち上げ時間を早めるために所定の高速回転速度（例えば、７０００ｒｐｍ）で運転する。そして、運転制御装置５０は、加熱安定後に圧縮機１の回転速度を下げて中速回転速度で運転するとともに、熱負荷に応じて加熱温度に見合った回転速度で圧縮機１を運転する。 When the hot water storage system 100 is operated to store hot water, the operation control device 50 gradually increases the rotational speed of the compressor 1 of the first unit at the start, and a predetermined high speed rotational speed ( For example, it is operated at 7000 rpm). Then, the operation control device 50 operates at a medium rotational speed by lowering the rotational speed of the compressor 1 after stable heating, and operates the compressor 1 at a rotational speed commensurate with the heating temperature according to the heat load.

貯湯タンク９の下部に滞留している低温の水は、加熱冷媒熱交換器１０の冷媒管１０ａを流通する高温の冷媒によって沸き上げ温度まで加熱され、対流によって上部に向かって移動し、貯湯タンク９の上部に貯湯される。 The low-temperature water staying in the lower part of the hot water storage tank 9 is heated to the boiling temperature by the high-temperature refrigerant flowing through the refrigerant pipe 10a of the heating refrigerant heat exchanger 10 and moves toward the upper part by convection. Hot water is stored at the top of 9.

前記したように、貯湯タンク９には、貯湯される湯水の温度を計測してその計測信号（湯水温計測信号）を運転制御装置５０に入力する複数（図１には５つを例示）のタンクサーミスタ９ａが備えられている。
複数のタンクサーミスタ９ａは、例えば、貯湯タンク９の上部から下部に向かって上下に配設され、貯湯タンク９の上部に高温の湯水が溜まり下部に低温の水が溜まっている状態のとき、高温の湯水と低温の水の境界層より上部に配置されるタンクサーミスタ９ａは高温の湯水の温度を計測し、境界層より下部に配置されるタンクサーミスタ９ａは低温の水の温度を計測する。 As described above, in the hot water storage tank 9, a plurality of (five examples are shown in FIG. 1) for measuring the temperature of the hot water stored and inputting the measurement signal (hot water temperature measurement signal) to the operation control device 50. A tank thermistor 9a is provided.
For example, the plurality of tank thermistors 9 a are arranged vertically from the upper part to the lower part of the hot water storage tank 9, and hot water is stored in the upper part of the hot water storage tank 9 and low temperature water is stored in the lower part. The tank thermistor 9a arranged above the boundary layer of the hot and cold water measures the temperature of the hot water and the tank thermistor 9a arranged below the boundary layer measures the temperature of the low temperature water.

例えば、図１に示すように、５台のタンクサーミスタ９ａ１〜９ａ５がこの順に貯湯タンク９の上部から配設され、高温の湯水と低温の水の境界層が、タンクサーミスタ９ａ３とタンクサーミスタ９ａ４の間に形成される場合、タンクサーミスタ９ａ１〜９ａ３は高温の湯水の温度を計測し、タンクサーミスタ９ａ４，９ａ５は低温の水の温度を計測する。 For example, as shown in FIG. 1, five tank thermistors 9a1 to 9a5 are arranged in this order from the upper part of the hot water storage tank 9, and a boundary layer between hot and cold water is formed between the tank thermistor 9a3 and the tank thermistor 9a4. When formed in between, the tank thermistors 9a1 to 9a3 measure the temperature of hot hot water, and the tank thermistors 9a4 and 9a5 measure the temperature of low temperature water.

したがって、運転制御装置５０は、タンクサーミスタ９ａ１〜９ａ３が計測する温度が所定の沸き上げ温度であり、タンクサーミスタ９ａ４，９ａ５が計測する温度が所定の沸き上げ温度より低温の場合、タンクサーミスタ９ａ１〜９ａ３が配設される位置に高温の湯水が滞留し、タンクサーミスタ９ａ４，９ａ５が配設される位置に低温の水が滞留していることを検知できる。
このようにして、運転制御装置５０は、貯湯タンク９に溜まる高温の湯水の量、すなわち貯湯量を検知できる。
なお、タンクサーミスタ９ａの数は５台に限定されるものではない。 Therefore, when the temperature measured by the tank thermistors 9a1 to 9a3 is a predetermined boiling temperature and the temperature measured by the tank thermistors 9a4 and 9a5 is lower than the predetermined boiling temperature, the operation control device 50 has the tank thermistors 9a1 to 9a1. It can be detected that hot hot water stays at a position where 9a3 is disposed and low temperature water stays at a position where tank thermistors 9a4 and 9a5 are disposed.
In this way, the operation control device 50 can detect the amount of hot hot water accumulated in the hot water storage tank 9, that is, the amount of hot water stored.
The number of tank thermistors 9a is not limited to five.

そして、空調給湯システム１００の運転制御装置５０は、２３時から翌朝７時など安価な夜間割引電気料金が適用される時間帯（以下、指定時間帯と称する）に貯湯運転するように予め設定され、指定時間帯になると空調給湯システム１００を貯湯運転して、高温の湯水を貯湯タンク９に貯湯する。
なお、２３時から翌朝７時は指定時間帯の一例であり、指定時間帯をこの時間帯に限定するものではない。 The operation control device 50 of the air conditioning and hot water supply system 100 is set in advance so as to perform hot water storage operation in a time zone (hereinafter referred to as a designated time zone) in which an inexpensive night discount electricity rate is applied, such as from 23:00 to 7:00 in the next morning. When the designated time zone is reached, the air-conditioning hot-water supply system 100 is operated to store hot water, and hot water is stored in the hot water storage tank 9.
In addition, from 23:00 to 7:00 the next morning is an example of a designated time zone, and the designated time zone is not limited to this time zone.

運転制御装置５０は、空調給湯システム１００を貯湯運転するとき、第１ユニットの四方弁５を第１状態に切換え、遮断弁６６を開弁するとともに遮断弁６５を閉弁する。
そして、圧縮機１を駆動して冷媒を高温高圧の状態にし、加熱冷媒熱交換器１０の冷媒管１０ａに流通させる。
冷媒管１０ａを流れ、貯湯タンク９内の湯水と熱交換して温度が低下した冷媒は、膨張弁３で減圧した後、空気熱交換器２を流れるときに送風ファン４ａによって取り込まれる外気によって冷却され、圧縮機１で圧縮される。
このように、空調給湯システム１００が貯湯運転するとき、冷媒は圧縮膨張を繰り返しながらヒートポンプユニット３０の第１ユニットの冷媒管３０ａを循環する。 When the air-conditioning hot water supply system 100 performs a hot water storage operation, the operation control device 50 switches the four-way valve 5 of the first unit to the first state, opens the shutoff valve 66, and closes the shutoff valve 65.
And the compressor 1 is driven, a refrigerant | coolant is made into a high temperature / high pressure state, and it distribute | circulates to the refrigerant | coolant pipe | tube 10a of the heating refrigerant | coolant heat exchanger 10. FIG.
The refrigerant that has flowed through the refrigerant pipe 10a and exchanged heat with hot water in the hot water storage tank 9 and reduced in temperature is cooled by outside air taken in by the blower fan 4a when it flows through the air heat exchanger 2 after being decompressed by the expansion valve 3. And compressed by the compressor 1.
Thus, when the air conditioning and hot water supply system 100 performs a hot water storage operation, the refrigerant circulates through the refrigerant pipe 30a of the first unit of the heat pump unit 30 while repeating compression and expansion.

そして冷媒は、加熱冷媒熱交換器１０の冷媒管１０ａを流れるときに貯湯タンク９内の湯水と熱交換して貯湯タンク９内の湯水を加熱する。
冷媒との熱交換によって加熱された高温の湯水は、対流によって貯湯タンク９の上部に移動して滞留するため、運転制御装置５０は、最も下部に配置されるタンクサーミスタ９ａ５が計測する温度が所定の沸き上げ温度になったときに貯湯タンク９に高温の湯水が満たされたと判定できる。
したがって、運転制御装置５０は、最も下部に配置されるタンクサーミスタ９ａ５が計測する温度が所定の沸き上げ温度になったときに貯湯運転を停止するように構成される。
このように、指定時間帯になると、運転制御装置５０は貯湯タンク９が高温の湯水で満たされるように空調給湯システム１００を貯湯運転する。 The refrigerant exchanges heat with hot water in the hot water storage tank 9 to heat the hot water in the hot water storage tank 9 when flowing through the refrigerant pipe 10 a of the heating refrigerant heat exchanger 10.
Since hot hot water heated by heat exchange with the refrigerant moves and stays in the upper part of the hot water storage tank 9 by convection, the operation control device 50 has a predetermined temperature measured by the tank thermistor 9a5 arranged at the lowermost part. When the boiling temperature is reached, it can be determined that the hot water storage tank 9 is filled with high-temperature hot water.
Therefore, the operation control device 50 is configured to stop the hot water storage operation when the temperature measured by the tank thermistor 9a5 disposed at the lowest level reaches a predetermined boiling temperature.
In this way, when the designated time zone comes, the operation control device 50 performs hot water storage operation of the air conditioning hot water supply system 100 so that the hot water storage tank 9 is filled with hot hot water.

空調給湯システム１００の貯湯運転と冷房運転を同時にする場合、運転制御装置５０は、第１ユニットで貯湯運転をするとともに、第２ユニットの四方弁２０５を第２状態に切り替え、第２ユニットの圧縮機２０１を駆動する。
圧縮機２０１で圧縮されて高温となった冷媒は、空気熱交換器２０２を流れるときに送風ファン２０４ａで取り込まれる外気で冷却されて凝縮し、膨張弁２０３で断熱膨張して低温になる。そして、低温になった冷媒が冷暖房用熱交換器６１の冷媒管６１ａを流れるときに気化しながら水配管６１ｂを流れる冷暖房用水を冷却して、冷暖房機６３に冷却された冷暖房用水が供給される。
この場合、冷媒は、空気熱交換器２０２で凝縮し冷暖房用熱交換器６１で気化（蒸発）する。したがって、空気熱交換器２０２は凝縮器として機能し、冷暖房用熱交換器６１は蒸発器として機能する。 When the hot water storage operation and the cooling operation of the air conditioning and hot water supply system 100 are performed simultaneously, the operation control device 50 performs the hot water storage operation in the first unit, switches the four-way valve 205 of the second unit to the second state, and compresses the second unit. The machine 201 is driven.
The refrigerant that has been compressed by the compressor 201 and heated to a high temperature is cooled and condensed by the outside air taken in by the blower fan 204 a when flowing through the air heat exchanger 202, and is adiabatically expanded by the expansion valve 203 to become a low temperature. And when the low temperature refrigerant | coolant flows through the refrigerant | coolant pipe | tube 61a of the heat exchanger 61 for cooling / heating, the cooling / heating water which flows through the water piping 61b is cooled, and the cooled cooling / heating water is supplied to the cooling / heating machine 63. .
In this case, the refrigerant is condensed by the air heat exchanger 202 and vaporized (evaporated) by the air conditioner heat exchanger 61. Therefore, the air heat exchanger 202 functions as a condenser, and the air conditioner heat exchanger 61 functions as an evaporator.

空調給湯システム１００の貯湯運転と暖房運転を同時にする場合、運転制御装置５０は、第１ユニットで貯湯運転をするとともに、第２ユニットの四方弁２０５を第１状態に切り替え、第２ユニットの圧縮機２０１を駆動する。
圧縮機２０１で圧縮されて高温となった冷媒は、冷暖房用熱交換器６１の冷媒管６１ａを流れるときに水配管６１ｂを流れる冷暖房用水を加熱して、冷暖房機６３に加熱された冷暖房用水が供給される。
この場合、冷媒は、冷暖房用熱交換器６１で凝縮し空気熱交換器２０２で気化（蒸発）する。したがって、冷暖房用熱交換器６１は凝縮器として機能し、空気熱交換器２０２は蒸発器として機能する。 When the hot water storage operation and the heating operation of the air conditioning and hot water supply system 100 are performed simultaneously, the operation control device 50 performs the hot water storage operation in the first unit, switches the four-way valve 205 of the second unit to the first state, and compresses the second unit. The machine 201 is driven.
The refrigerant that has been compressed by the compressor 201 and has a high temperature heats the cooling / heating water flowing through the water pipe 61b when flowing through the refrigerant pipe 61a of the cooling / heating heat exchanger 61, and the cooling / heating water heated by the cooling / heating machine 63 is heated. Supplied.
In this case, the refrigerant condenses in the air conditioner heat exchanger 61 and is vaporized (evaporated) in the air heat exchanger 202. Therefore, the air conditioner heat exchanger 61 functions as a condenser, and the air heat exchanger 202 functions as an evaporator.

また、空調給湯システム１００を冷房運転のみする場合（給湯運転と冷房運転を同時にする場合）、運転制御装置５０は、遮断弁６６を閉弁するとともに遮断弁６５を開弁する。そして、運転制御装置５０は、第１ユニットの四方弁５と第２ユニットの四方弁２０５をともに第２状態に切り替え、第１ユニットの圧縮機１と第２ユニットの圧縮機２０１を駆動する。
冷暖房用熱交換器６１の水配管６１ｂを流れる冷暖房用水は、第１ユニット及び第２ユニットで低温になって冷媒管６１ａを流れる冷媒で冷却され、冷暖房機６３に冷却された冷暖房用水が供給される。 When the air conditioning and hot water supply system 100 is only in the cooling operation (when the hot water supply operation and the cooling operation are performed simultaneously), the operation control device 50 closes the shutoff valve 66 and opens the shutoff valve 65. Then, the operation control device 50 switches both the four-way valve 5 of the first unit and the four-way valve 205 of the second unit to the second state, and drives the compressor 1 of the first unit and the compressor 201 of the second unit.
The cooling / heating water flowing through the water pipe 61b of the cooling / heating heat exchanger 61 is cooled by the refrigerant flowing through the refrigerant pipe 61a at a low temperature in the first unit and the second unit, and the cooled cooling / heating water is supplied to the cooling / heating unit 63. The

さらに、空調給湯システム１００を暖房運転のみする場合（給湯運転と暖房運転を同時にする場合）、運転制御装置５０は、遮断弁６６を閉弁するとともに遮断弁６５を開弁する。そして、運転制御装置５０は、第１ユニットの四方弁５と第２ユニットの四方弁２０５をともに第１状態に切り替え、第１ユニットの圧縮機１と第２ユニットの圧縮機２０１を駆動する。
冷暖房用熱交換器６１の水配管６１ｂを流れる冷暖房用水は、第１ユニット及び第２ユニットで高温になって冷媒管６１ａを流れる冷媒で加熱され、冷暖房機６３に加熱された冷暖房用水が供給される。 Further, when the air conditioning and hot water supply system 100 is only in the heating operation (when the hot water supply operation and the heating operation are performed simultaneously), the operation control device 50 closes the shutoff valve 66 and opens the shutoff valve 65. Then, the operation control device 50 switches both the four-way valve 5 of the first unit and the four-way valve 205 of the second unit to the first state, and drives the compressor 1 of the first unit and the compressor 201 of the second unit.
The cooling / heating water flowing through the water pipe 61b of the heating / cooling heat exchanger 61 is heated by the refrigerant flowing through the refrigerant pipe 61a at a high temperature in the first unit and the second unit, and the heated cooling / heating water is supplied to the cooling / heating unit 63. The

このように構成される空調給湯システム１００で利用者が設定できる給湯温度の範囲は摂氏４５〜６０℃程度であり、図示しない給水源から供給される低温の水と貯湯タンク９から取り出される高温の湯水が湯水混合弁１１で混合して利用者が設定する給湯温度に調節される。
このため、貯湯タンク９には、例えば６０℃など、給湯温度の上限値に近い温度の湯水が貯湯されることになり、レジオネラ菌や大腸菌などの雑菌が繁殖しやすい環境となっている。
そこで、レジオネラ菌などの雑菌を殺菌することが必要になり、貯湯タンク９には殺菌構造が必要になる。
そして、本実施形態に係る空調給湯システム１００の貯湯タンク９には、紫外線を利用した殺菌構造が組み込まれる。 The range of the hot water temperature that can be set by the user in the air-conditioning hot water supply system 100 configured in this way is about 45 to 60 ° C., and the hot water extracted from the hot water storage tank 9 and the low temperature water supplied from a water supply source (not shown). The hot water is mixed by the hot water mixing valve 11 and adjusted to the hot water supply temperature set by the user.
For this reason, hot water having a temperature close to the upper limit value of the hot water supply temperature, such as 60 ° C., is stored in the hot water storage tank 9, and an environment in which miscellaneous bacteria such as Legionella bacteria and Escherichia coli are easy to propagate.
Therefore, it is necessary to sterilize various bacteria such as Legionella, and the hot water storage tank 9 needs a sterilization structure.
And the sterilization structure using an ultraviolet-ray is integrated in the hot water storage tank 9 of the air-conditioning hot-water supply system 100 which concerns on this embodiment.

図２に示すように、貯湯タンク９の下部には、低温の水を取り込むための入水口９０と加熱冷媒熱交換器１０が備わり、入水口９０を介して貯湯タンク９に給水される低温の水は、加熱冷媒熱交換器１０の冷媒管１０ａを流通する冷媒と熱交換して加熱される。
また、貯湯タンク９の上部には貯湯される湯水を取り出すための出湯口９１が備わっている。 As shown in FIG. 2, the lower part of the hot water storage tank 9 is provided with a water inlet 90 for taking in low-temperature water and a heating refrigerant heat exchanger 10, and the low temperature water supplied to the hot water storage tank 9 through the water inlet 90 is provided. The water is heated by exchanging heat with the refrigerant flowing through the refrigerant pipe 10a of the heating refrigerant heat exchanger 10.
A hot water outlet 91 for taking out hot water to be stored is provided at the upper part of the hot water storage tank 9.

そして、貯湯タンク９の上部を閉塞する上蓋部９Ｔには、貯湯タンク９の下部を閉塞する底床部９Ｂに向かって伸びるように、長尺の紫外線殺菌灯９２（紫外線照射手段）が配設されている。
例えば、貯湯タンク９が円筒形状の場合、紫外線殺菌灯９２は、貯湯タンク９の上蓋部９Ｔ（円形状）の中心に備わることが好適である。 A long ultraviolet germicidal lamp 92 (ultraviolet irradiation means) is disposed on the upper lid portion 9T that closes the upper portion of the hot water storage tank 9 so as to extend toward the bottom floor portion 9B that closes the lower portion of the hot water storage tank 9. Has been.
For example, when the hot water storage tank 9 has a cylindrical shape, the ultraviolet germicidal lamp 92 is preferably provided at the center of the upper lid portion 9T (circular shape) of the hot water storage tank 9.

紫外線殺菌灯９２は、長尺の側面９２ａ及び先端部９２ｂが紫外線を照射する照射面を形成し、先端部９２ｂから貯湯タンク９の底床部９Ｂに向かって紫外線を照射し、側面９２ａから側壁面９Ｓに向かって紫外線を照射するように構成される。 The ultraviolet germicidal lamp 92 forms an irradiation surface on which the long side surface 92a and the front end portion 92b irradiate ultraviolet light, and irradiates the ultraviolet light from the front end portion 92b toward the bottom floor portion 9B of the hot water storage tank 9, and from the side surface 92a. It is comprised so that an ultraviolet-ray may be irradiated toward the wall surface 9S.

また、紫外線殺菌灯９２の側面９２ａの周囲には、貯湯タンク９の側壁面９Ｓに向かって広がる螺旋板９３が備わっている。
螺旋板９３は、紫外線殺菌灯９２を中心とする径方向に側面９２ａから広がり、紫外線殺菌灯９２の軸方向に沿って螺旋状にねじれて形成され、紫外線殺菌灯９２の側面９２ａに沿って貯湯タンク９の下部から上部に向かう螺旋状の流路９３ａを形成する。そして、流路９３ａは上部で出湯口９１と連通する。 Further, around the side surface 92 a of the ultraviolet germicidal lamp 92, a spiral plate 93 that extends toward the side wall surface 9 </ b> S of the hot water storage tank 9 is provided.
The spiral plate 93 extends from the side surface 92 a in the radial direction centering on the ultraviolet germicidal lamp 92, is formed by being spirally twisted along the axial direction of the ultraviolet germicidal lamp 92, and stores hot water along the side surface 92 a of the ultraviolet germicidal lamp 92. A spiral flow path 93a is formed from the lower part of the tank 9 toward the upper part. And the flow path 93a communicates with the hot water outlet 91 in the upper part.

このように形成される流路９３ａを流れる湯水は、紫外線殺菌灯９２を中心に旋回しながら紫外線殺菌灯９２の側面９２ａに沿って上部に向かって流れ、紫外線殺菌灯９２の側面９２ａから照射される紫外線に露光して、湯水に含まれるレジオネラ菌等の雑菌が紫外線によって殺菌される。
流路９３ａは紫外線殺菌灯９２の周囲に螺旋状に形成され、湯水が出湯口９１まで流れる経路の長さ（経路長）を、螺旋板９３が備わらない場合に比べて長くできる。
そして、湯水が出湯口９１まで流れる経路長が長くなると、紫外線殺菌灯９２の側面９２ａから照射される紫外線に湯水が露光する時間が長くなり、紫外線による湯水の殺菌効果が向上する。 The hot water flowing through the flow path 93a formed in this way flows upward along the side surface 92a of the ultraviolet germicidal lamp 92 while turning around the ultraviolet germicidal lamp 92, and is irradiated from the side surface 92a of the ultraviolet germicidal lamp 92. When exposed to ultraviolet rays, bacteria such as Legionella contained in hot water are sterilized by ultraviolet rays.
The channel 93 a is formed in a spiral shape around the ultraviolet germicidal lamp 92, and the length of the path (route length) through which hot water flows to the tap outlet 91 can be made longer than when the spiral plate 93 is not provided.
And when the path | route length which hot water flows to the tap outlet 91 becomes long, the time which hot water exposes to the ultraviolet-ray irradiated from the side surface 92a of the ultraviolet germicidal lamp 92 will become long, and the bactericidal effect of the hot water by an ultraviolet-ray will improve.

前記したように、レジオネラ菌を紫外線で殺菌する場合、１平方センチメートル当たり３．０ｍＷ・ｓｅｃ以上の紫外線照射量が必要になる。
そこで、紫外線殺菌灯９２の側面９２ａから照射される紫外線の照射量で、流路９３ａを流れる湯水のレジオネラ菌を殺菌できるように流路９３ａの形状を設定することが好適である。 As described above, when Legionella is sterilized with ultraviolet rays, an ultraviolet irradiation amount of 3.0 mW · sec or more per square centimeter is required.
Therefore, it is preferable to set the shape of the flow path 93a so that Legionella bacteria in hot water flowing through the flow path 93a can be sterilized by the amount of ultraviolet light irradiated from the side surface 92a of the ultraviolet germicidal lamp 92.

例えば、図示しない給水源の水圧、入水口９０及び出湯口９１の径などから、流路９３ａを流れる湯水の流速が決定できる。
流路９３ａを流れる湯水の流速が速い場合、流路９３ａの経路長を長くして湯水が紫外線に露光する時間を長くすることが好適である。
そこで、流路９３ａを流れる湯水の流速が速い場合は、例えば螺旋板９３の螺旋の傾斜を小さくして流路９３ａの経路長を長くする。
また、流路９３ａを流れる湯水の流速が遅い場合、流路９３ａの経路長が短く湯水が紫外線に露光する時間が短くても好適な殺菌効果を得ることができる。
そこで、流路９３ａを流れる湯水の流速が遅い場合は、例えば螺旋板９３の螺旋の傾斜を大きくして流路９３ａの経路長を短くする。 For example, the flow rate of hot water flowing through the flow path 93a can be determined from the water pressure of a water supply source (not shown), the diameters of the water inlet 90 and the hot water outlet 91, and the like.
When the flow rate of the hot water flowing through the flow path 93a is high, it is preferable to lengthen the path length of the flow path 93a so that the hot water is exposed to ultraviolet rays.
Therefore, when the flow rate of the hot water flowing through the flow path 93a is high, for example, the inclination of the spiral of the spiral plate 93 is reduced to increase the path length of the flow path 93a.
In addition, when the flow rate of the hot water flowing through the flow path 93a is slow, a suitable sterilizing effect can be obtained even if the path length of the flow path 93a is short and the time during which the hot water is exposed to ultraviolet rays is short.
Therefore, when the flow rate of hot water flowing through the flow path 93a is slow, for example, the spiral slope of the spiral plate 93 is increased to shorten the path length of the flow path 93a.

また、流路９３ａを流れる湯水の紫外線の露光量は、紫外線殺菌灯９２から離れるほど減少する。
そこで、最も紫外線殺菌灯９２から離れた位置を流れる湯水に、所定量の紫外線が露光するように紫外線殺菌灯９２の紫外線の照射量を設定することが好適である。
このような、螺旋板９３の傾斜及び紫外線殺菌灯９２の照射量は、実験等に基づいて設定することができる。
そして、紫外線殺菌灯９２及び螺旋板９３を含んで殺菌構造が構成される。 Further, the ultraviolet light exposure amount of the hot water flowing through the flow path 93a decreases as the distance from the ultraviolet germicidal lamp 92 increases.
Therefore, it is preferable to set the ultraviolet irradiation amount of the ultraviolet germicidal lamp 92 so that a predetermined amount of ultraviolet light is exposed to the hot water flowing through the position farthest from the ultraviolet germicidal lamp 92.
The inclination of the spiral plate 93 and the irradiation amount of the ultraviolet germicidal lamp 92 can be set based on experiments or the like.
The sterilization structure is configured including the ultraviolet germicidal lamp 92 and the spiral plate 93.

また、紫外線殺菌灯９２の先端部９２ｂの下部、すなわち、先端部９２ｂと底床部９Ｂの間には、湯水を滞留させるための滞留領域９Ｃが形成される。
滞留領域９Ｃと流路９３ａの境界には入口部９３ｂが開口し、滞留領域９Ｃと流路９３ａは連通する。この構成によって、滞留領域９Ｃに滞留する湯水は、必要に応じて流路９３ａを流れて出湯口９１から貯湯タンク９の外部に取り出される。
さらに、滞留領域９Ｃには加熱冷媒熱交換器１０の冷媒管１０ａが配設され、冷媒管１０ａを流れる高温の冷媒で湯水が加熱されると対流が発生する。
そして、紫外線殺菌灯９２の先端部９２ｂが滞留領域９Ｃに突出している構成が好適である。 Further, a retention region 9C for retaining hot water is formed below the distal end portion 92b of the ultraviolet germicidal lamp 92, that is, between the distal end portion 92b and the bottom floor portion 9B.
An entrance portion 93b opens at the boundary between the stay region 9C and the flow path 93a, and the stay region 9C and the flow path 93a communicate with each other. With this configuration, hot water staying in the stay region 9C flows through the flow path 93a as needed, and is taken out from the hot water outlet 91 to the outside of the hot water storage tank 9.
Furthermore, the refrigerant | coolant pipe | tube 10a of the heating refrigerant | coolant heat exchanger 10 is arrange | positioned in the retention area | region 9C, and a convection will generate | occur | produce when hot water is heated with the high temperature refrigerant | coolant which flows through the refrigerant | coolant pipe | tube 10a.
And the structure which the front-end | tip part 92b of the ultraviolet germicidal lamp 92 protrudes in the retention area | region 9C is suitable.

図２に示す紫外線殺菌灯９２及び螺旋板９３を含んで構成される殺菌構造は、紫外線殺菌灯９２の周囲に螺旋状の流路９３ａを形成することによって、湯水が出湯口９１まで流れる経路長を長くすることができ、湯水が紫外線に露光する露光量を多くすることができる。
また、湯水が流路９３ａを流れる前に滞留領域９Ｃにあるとき、紫外線殺菌灯９２の先端部９２ｂから照射される紫外線に湯水が露光することで湯水に含まれる雑菌の一部を殺菌することができ、流路９３ａを流れる湯水に含まれる雑菌の数を減らすことができる。
このように、湯水が滞留領域９Ｃにあるときに、紫外線殺菌灯９２の先端部９２ｂから照射される紫外線に露光することによる殺菌を予備殺菌と称する。 The sterilization structure including the ultraviolet germicidal lamp 92 and the spiral plate 93 shown in FIG. 2 has a path length through which hot water flows to the tap 91 by forming a spiral flow path 93 a around the ultraviolet germicidal lamp 92. The exposure amount of hot water exposed to ultraviolet rays can be increased.
In addition, when hot water is in the staying area 9C before flowing through the flow path 93a, the hot water is exposed to the ultraviolet rays irradiated from the tip 92b of the ultraviolet germicidal lamp 92 to sterilize some of the germs contained in the hot water. The number of germs contained in the hot water flowing through the flow path 93a can be reduced.
Thus, sterilization by exposing to ultraviolet rays irradiated from the tip end portion 92b of the ultraviolet sterilization lamp 92 when hot water is in the staying area 9C is referred to as preliminary sterilization.

なお、貯湯される湯水を加熱殺菌するための補助加熱器２０が、殺菌構造として貯湯タンク９に備わる構成であってもよい。補助加熱器２０は例えば電気ヒータであり、運転制御装置５０（図１参照）からの制御信号によって運転が制御される。
運転制御装置５０は、例えば、定期的に補助加熱器２０を運転して貯湯タンク９に貯湯される湯水の温度を、雑菌が死滅する温度（約７０℃）まで上昇させ、湯水に含まれる雑菌を加熱殺菌する。
しかしながら、補助加熱器２０による殺菌は消費電力が大きく、空調給湯システム１００の運用コストが高くなる。
そこで、図２に示す紫外線殺菌灯９２及び螺旋板９３を含んで構成される殺菌構造を併用することで、運用コストが高くなることを抑えながら湯水に対する殺菌効果を向上できる。 In addition, the structure with which the auxiliary | assistant heater 20 for heat-sterilizing the hot water stored hot water is provided in the hot water storage tank 9 as a sterilization structure may be sufficient. The auxiliary heater 20 is, for example, an electric heater, and the operation is controlled by a control signal from the operation control device 50 (see FIG. 1).
The operation control device 50, for example, periodically operates the auxiliary heater 20 to raise the temperature of hot water stored in the hot water storage tank 9 to a temperature at which various germs are killed (about 70 ° C.), and the germs contained in the hot water Sterilize by heating.
However, sterilization by the auxiliary heater 20 consumes a large amount of power, and the operating cost of the air conditioning and hot water supply system 100 increases.
Therefore, the combined use of the sterilization structure including the ultraviolet sterilization lamp 92 and the spiral plate 93 shown in FIG. 2 can improve the sterilization effect on hot water while suppressing an increase in operation cost.

給湯栓１３（図１参照）から湯水が給湯される場合、図３の（ａ）に示すように、貯湯タンク９に貯湯される湯水ＨＷは、図示しない給水源から入水口９０を介して給水される低温の水の圧力によって上部に向かって押され、螺旋状の流路９３ａを流れて出湯口９１から水配管４０ａに押し出される。
このとき湯水ＨＷは、紫外線殺菌灯９２の側面９２ａ（図２参照）に沿って流路９３ａを流れるため、側面９２ａから照射される紫外線ＵＶに露光し、湯水ＨＷに含まれるレジオネラ菌などの雑菌が殺菌される。 When hot water is supplied from the hot water tap 13 (see FIG. 1), as shown in FIG. 3A, the hot water HW stored in the hot water storage tank 9 is supplied from a water supply source (not shown) through a water inlet 90. It is pushed upward by the pressure of the low-temperature water, flows through the spiral flow path 93a, and is pushed out from the hot water outlet 91 to the water pipe 40a.
At this time, since the hot water HW flows through the flow path 93a along the side surface 92a (see FIG. 2) of the ultraviolet germicidal lamp 92, the hot water HW is exposed to the ultraviolet UV irradiated from the side surface 92a, and various bacteria such as Legionella contained in the hot water HW. Is sterilized.

また、紫外線殺菌灯９２の先端部９２ｂ（図２参照）が滞留領域９Ｃに突出していることから、滞留領域９Ｃにある湯水ＨＷは、先端部９２ｂから照射される紫外線に露光する。
したがって湯水ＨＷは、流路９３ａを流れる前に滞留領域９Ｃにあるときに、先端部９２ｂから下部に向かって照射される紫外線ＵＶで予備殺菌される。この構成によって、流路９３ａを流れる前にレジオネラ菌等の雑菌の一部が殺菌され、湯水ＷＨに含まれる雑菌の量が減少する。 Moreover, since the front-end | tip part 92b (refer FIG. 2) of the ultraviolet germicidal lamp 92 protrudes in the residence area | region 9C, the hot water HW in the residence area | region 9C exposes to the ultraviolet-ray irradiated from the front-end | tip part 92b.
Therefore, the hot water HW is preliminarily sterilized with the ultraviolet rays UV irradiated from the front end portion 92b toward the lower portion when it is in the staying region 9C before flowing through the flow path 93a. With this configuration, some bacteria such as Legionella bacteria are sterilized before flowing through the flow path 93a, and the amount of bacteria contained in the hot water WH is reduced.

このように、湯水ＨＷが給湯栓１３（図１参照）から利用者に給湯される場合、貯湯タンク９内の湯水ＨＷは、流路９３ａを流れる前に滞留領域９Ｃにあるときに、紫外線殺菌灯９２の先端部９２ｂから下部に向かって照射される紫外線ＵＶによって雑菌の一部が殺菌され（予備殺菌）、さらに、流路９３ａを流れるときに、長時間に亘って紫外線殺菌灯９２の側面９２ａから照射される紫外線ＵＶに露光することになる。
つまり、本実施形態に係る殺菌構造は、予備殺菌によって雑菌の数が減った状態の湯水ＨＷを流路９３ａに流し、長時間に亘って紫外線ＵＶに露光させることができる。
したがって、大出力の紫外線殺菌灯９２を必要とすることなく、湯水ＨＷに含まれるレジオネラ菌等の雑菌を紫外線ＵＶで殺菌できる。 Thus, when the hot water HW is supplied to the user from the hot water tap 13 (see FIG. 1), the hot water HW in the hot water storage tank 9 is ultraviolet sterilized when it is in the stay region 9C before flowing through the flow path 93a. A part of various germs is sterilized by ultraviolet rays UV irradiated from the front end portion 92b of the lamp 92 toward the lower part (preliminary sterilization), and further, the side surface of the ultraviolet sterilization lamp 92 is taken for a long time when flowing through the flow path 93a. It will be exposed to ultraviolet rays UV irradiated from 92a.
That is, the sterilization structure according to the present embodiment allows the hot water HW in which the number of germs has been reduced by the preliminary sterilization to flow through the flow path 93a and be exposed to the ultraviolet rays UV for a long time.
Therefore, various bacteria such as Legionella contained in the hot water HW can be sterilized with the ultraviolet rays UV without requiring the high-power ultraviolet germicidal lamp 92.

以上のように、本実施形態に係る空調給湯システム１００（図１参照）は、湯水ＨＷが利用者に給湯されるときに、湯水ＨＷに含まれるレジオネラ菌等の雑菌を、貯湯タンク９に組み込まれる殺菌構造によって効果的に殺菌することができる。 As described above, the air-conditioning hot water supply system 100 (see FIG. 1) according to the present embodiment incorporates germs such as Legionella contained in the hot water HW into the hot water storage tank 9 when the hot water HW is supplied to the user. Can be effectively sterilized by the sterilization structure.

さらに、本実施形態に係る空調給湯システム１００（図１参照）は、貯湯運転のときにも湯水に含まれる雑菌の一部を殺菌できる。
運転制御装置５０（図１参照）が空調給湯システム１００を貯湯運転する場合、図３の（ｂ）に示すように、貯湯タンク９の滞留領域９Ｃに滞留する低温の水は、加熱冷媒熱交換器１０の冷媒管１０ａを流れる高温の冷媒によって加熱されて高温の湯水ＨＷになり、滞留領域９Ｃに対流が発生する。このとき、紫外線殺菌灯９２の先端部９２ｂ（図２参照）から紫外線ＵＶが滞留領域９Ｃに向かって照射されると、対流によって上昇した湯水ＨＷが紫外線ＵＶに露光する。
そして、湯水ＨＷが紫外線ＵＶに露光することで、湯水ＨＷに含まれるレジオネラ菌等の雑菌の一部が殺菌される。したがって、貯湯タンク９内に貯湯される湯水ＨＷに含まれる雑菌の数を減らすことができる。 Furthermore, the air-conditioning hot-water supply system 100 (refer FIG. 1) which concerns on this embodiment can disinfect some germs contained in hot water at the time of hot water storage operation.
When the operation control device 50 (see FIG. 1) performs a hot water storage operation of the air conditioning hot water supply system 100, as shown in FIG. 3 (b), the low temperature water staying in the stay region 9C of the hot water storage tank 9 is heated refrigerant heat exchange. Heated by the high-temperature refrigerant flowing through the refrigerant pipe 10a of the vessel 10 becomes high-temperature hot water HW, and convection occurs in the staying region 9C. At this time, when the ultraviolet ray UV is irradiated toward the staying area 9C from the tip end portion 92b (see FIG. 2) of the ultraviolet germicidal lamp 92, the hot water HW that has been raised by convection is exposed to the ultraviolet ray UV.
And the hot water HW exposes to ultraviolet-ray UV, and some germs, such as Legionella bacteria contained in the hot water HW, are sterilized. Therefore, the number of germs contained in the hot water HW stored in the hot water storage tank 9 can be reduced.

以上説明したように、本実施形態に係る空調給湯システム１００（図１参照）の貯湯タンク９（図１参照）に組み込まれる殺菌構造は、紫外線殺菌灯９２（図２参照）から照射される紫外線ＵＶによって、湯水ＨＷに含まれるレジオネラ菌などの雑菌を殺菌する構成である。
そして、螺旋板９３（図２参照）によって、紫外線殺菌灯９２の側面９２ａ（図２参照）に軸方向に沿った螺旋状の流路９３ａ（図２参照）を形成し、流路９３ａを湯水ＨＷが上部に向かって流れるように構成する。
この構成によって、湯水ＨＷが、紫外線殺菌灯９２から照射される紫外線ＵＶに露光する時間を長くすることができ、紫外線ＵＶによる湯水ＨＷに対する殺菌効果を向上できる。 As described above, the sterilization structure incorporated in the hot water storage tank 9 (see FIG. 1) of the air conditioning and hot water supply system 100 (see FIG. 1) according to the present embodiment is the ultraviolet ray irradiated from the ultraviolet sterilization lamp 92 (see FIG. 2). In this configuration, germs such as Legionella contained in the hot water HW are sterilized by UV.
And the spiral flow path 93a (refer FIG. 2) along the axial direction is formed in the side surface 92a (refer FIG. 2) of the ultraviolet germicidal lamp 92 by the spiral plate 93 (refer FIG. 2), and the flow path 93a is made into hot water. The HW is configured to flow upward.
With this configuration, it is possible to lengthen the time during which the hot water HW is exposed to the ultraviolet light UV irradiated from the ultraviolet germicidal lamp 92, and the sterilizing effect of the ultraviolet light UV on the hot water HW can be improved.

さらに、本実施形態に係る空調給湯システム１００（図１参照）は、螺旋板９３（図２参照）の下部に形成される滞留領域９Ｃ（図２参照）にも紫外線ＵＶを照射できる構成とすることで、流路９３ａを流れる前に滞留領域９Ｃにある湯水ＨＷを予備殺菌できる。
したがって、湯水ＨＷに含まれる雑菌の一部を流路９３ａを流れる前に殺菌することができ、湯水ＨＷが流路９３ａを流れるときの殺菌効果をさらに向上できる。 Furthermore, the air-conditioning hot water supply system 100 (see FIG. 1) according to the present embodiment is configured to be able to irradiate ultraviolet rays UV also on the staying region 9C (see FIG. 2) formed in the lower part of the spiral plate 93 (see FIG. 2). Thus, the hot water HW in the stay region 9C can be preliminarily sterilized before flowing through the flow path 93a.
Therefore, some of the germs contained in the hot water HW can be sterilized before flowing through the flow path 93a, and the sterilizing effect when the hot water HW flows through the flow path 93a can be further improved.

つまり、螺旋状の流路９３ａ（図２参照）の形成及び予備殺菌によって、湯水ＨＷの紫外線ＵＶの露光量を増やすことができ、大出力の紫外線殺菌灯９２（図２参照）を備えた場合と同様の効果を得ることができる。
換言すると、本実施形態に係る空調給湯システム１００（図１参照）は、大出力の紫外線殺菌灯９２を使用することなく湯水ＨＷに対する殺菌効果を向上できるという優れた効果を奏する。
そして、消費電力の増大、殺菌装置の大型化、紫外線の発熱や防爆管理の困難さ、などの問題を解決できる。 That is, the amount of ultraviolet ray UV exposure of the hot water HW can be increased by the formation of the spiral flow path 93a (see FIG. 2) and the preliminary sterilization, and the high-power ultraviolet sterilization lamp 92 (see FIG. 2) is provided. The same effect can be obtained.
In other words, the air-conditioning hot water supply system 100 (see FIG. 1) according to the present embodiment has an excellent effect that the sterilization effect on the hot water HW can be improved without using the high-power ultraviolet sterilization lamp 92.
And problems, such as increase in power consumption, enlargement of a sterilizer, heat generation of ultraviolet rays and difficulty in explosion-proof management, can be solved.

なお、本実施形態は、発明の趣旨を変更しない範囲において適宜設計変更可能である。
例えば、図２に示す螺旋板９３の替わりに、図４の（ａ）に示すように、紫外線殺菌灯９２の周囲に側壁面９Ｓに向かって広がる複数（図４の（ａ）には３つを例示）の整流板９４が備わる構成としてもよい。
つまり、整流板９４は、紫外線殺菌灯９２を中心とする径方向に側面９２ａから広がる。
また、整流板９４は、上蓋部９Ｔ及び底床部９Ｂに平行に、互いに平行に上下方向に備わり、貯湯タンク９の内部を複数の領域に区分する。 Note that the design of this embodiment can be changed as appropriate without departing from the spirit of the invention.
For example, instead of the spiral plate 93 shown in FIG. 2, as shown in FIG. 4A, a plurality of (three in FIG. 4A) spread toward the side wall surface 9S around the ultraviolet germicidal lamp 92. For example) may be provided.
That is, the rectifying plate 94 extends from the side surface 92 a in the radial direction centering on the ultraviolet germicidal lamp 92.
Moreover, the baffle plate 94 is provided in an up-down direction in parallel with each other in parallel with the upper lid portion 9T and the bottom floor portion 9B, and divides the inside of the hot water storage tank 9 into a plurality of regions.

例えば、図４の（ａ）に示すように３つの整流板９４ａ〜９４ｃが備わる場合、整流板９４は貯湯タンク９の内部を４つの領域に区分する。
整流板９４ａは最も上部の側に備わり、整流板９４ｃは最も下部の側に備わる。そして、整流板９４ａと整流板９４ｃの間に整流板９４ｂが配設される。
また、最も下部に備わる整流板９４ｃの下部には滞留領域９Ｃが形成され、紫外線殺菌灯９２の先端部９２ｂが滞留領域９Ｃに突出している。 For example, as shown in FIG. 4A, when three rectifying plates 94a to 94c are provided, the rectifying plate 94 divides the inside of the hot water storage tank 9 into four regions.
The rectifying plate 94a is provided on the uppermost side, and the rectifying plate 94c is provided on the lowermost side. A rectifying plate 94b is disposed between the rectifying plate 94a and the rectifying plate 94c.
Further, a staying area 9C is formed at the lower part of the rectifying plate 94c provided at the lowermost part, and the tip end portion 92b of the ultraviolet germicidal lamp 92 projects into the staying area 9C.

そして、整流板９４ａと上蓋部９Ｔの間に上部領域９４Ｕが形成され、整流板９４ａと整流板９４ｂの間に中間領域９４Ｍが形成され、整流板９４ｂと整流板９４ｃの間に下部領域９４Ｌが形成される。
上部領域９４Ｕ、中間領域９４Ｍ、及び下部領域９４Ｌは、紫外線殺菌灯９２の周囲に形成される領域であり、上部領域９４Ｕは出湯口９１と連通している。 An upper region 94U is formed between the rectifying plate 94a and the upper lid portion 9T, an intermediate region 94M is formed between the rectifying plate 94a and the rectifying plate 94b, and a lower region 94L is formed between the rectifying plate 94b and the rectifying plate 94c. It is formed.
The upper region 94U, the intermediate region 94M, and the lower region 94L are regions formed around the ultraviolet germicidal lamp 92, and the upper region 94U communicates with the tap 91.

さらに、上部領域９４Ｕ、中間領域９４Ｍ、及び下部領域９４Ｌは、各整流板９４に垂直な仕切板９５によって、整流板９４と垂直な方向に１箇所で仕切られている。 Furthermore, the upper region 94U, the intermediate region 94M, and the lower region 94L are partitioned at one place in a direction perpendicular to the rectifying plates 94 by a partition plate 95 perpendicular to each rectifying plate 94.

また、整流板９４には、平面を貫通する貫通孔９６が形成され、整流板９４で区分される隣接する領域は貫通孔９６を介して連通する。
そして、隣り合う２つの整流板９４（例えば、整流板９４ｃと整流板９４ｂ）の貫通孔９６（例えば、貫通孔９６ｃと貫通孔９６ｂ）は、当該２つの整流板９４の間によって形成される領域（例えば、下部領域９４Ｌ）を仕切る仕切板９５を、紫外線殺菌灯９２を中心とした周方向に挟んだ位置に形成されることが好適である。
貫通孔９６の形状は限定されるものではなく、図示するように１つの孔で形成されていてもよいし、図示はしないが複数の小孔の集まりであってもよい。また、整流板９４の一部を切り欠いて形成される構成であってもよい。 Further, the rectifying plate 94 is formed with a through hole 96 penetrating through the plane, and adjacent regions separated by the rectifying plate 94 communicate with each other through the through hole 96.
A through hole 96 (for example, the through hole 96c and the through hole 96b) of the two adjacent rectifying plates 94 (for example, the rectifying plate 94c and the rectifying plate 94b) is a region formed between the two rectifying plates 94. It is preferable that the partition plate 95 for partitioning (for example, the lower region 94L) is formed at a position sandwiched in the circumferential direction around the ultraviolet germicidal lamp 92.
The shape of the through hole 96 is not limited, and may be formed by a single hole as illustrated, or may be a collection of a plurality of small holes although not illustrated. Moreover, the structure formed by notching a part of the current plate 94 may be used.

図４の（ａ）に示すように構成される貯湯タンク９においては、滞留領域９Ｃに滞留する湯水ＨＷが、貫通孔９６ｃ、下部領域９４Ｌ、貫通孔９６ｂ、中間領域９４Ｍ、貫通孔９６ａ、上部領域９４Ｕの順に出湯口９１まで流れる流路９７が形成される。
流路９７は整流板９４ｃに形成される貫通孔９６ｃを介して滞留領域９Ｃと連通し、滞留領域９Ｃに滞留する湯水ＨＷは、必要に応じて流路９７を出湯口９１まで流れる。
そして、湯水ＨＷは、流路９７を流れるときに、紫外線殺菌灯９２の側面９２ａから照射される紫外線ＵＶに露光してレジオネラ菌等の雑菌が殺菌される。 In the hot water storage tank 9 configured as shown in FIG. 4A, the hot water HW staying in the staying region 9C is passed through the through hole 96c, the lower region 94L, the through hole 96b, the intermediate region 94M, the through hole 96a, and the upper portion. A flow path 97 is formed that flows to the hot water outlet 91 in the order of the region 94U.
The flow path 97 communicates with the staying area 9C through a through hole 96c formed in the rectifying plate 94c, and the hot water HW staying in the staying area 9C flows through the flow path 97 to the hot water outlet 91 as necessary.
And when the hot water HW flows through the flow path 97, it is exposed to ultraviolet rays UV irradiated from the side surface 92a of the ultraviolet germicidal lamp 92, and germs such as Legionella bacteria are sterilized.

そして、隣り合う２つの整流板９４の貫通孔９６を、当該２つの整流板９４の間に備わる仕切板９５を紫外線殺菌灯９２を中心とした周方向に挟んだ位置に形成することで、流路９７の経路長を長くすることができ、流路９７を流れる湯水ＨＷに、長時間に亘って紫外線ＵＶを露光することができる。この構成によって、湯水ＨＷに対する殺菌効果を向上できる。 Then, the through holes 96 of the two rectifying plates 94 adjacent to each other are formed at positions where the partition plate 95 provided between the two rectifying plates 94 is sandwiched in the circumferential direction around the ultraviolet germicidal lamp 92. The path length of the path 97 can be increased, and the UV water UV can be exposed to the hot water HW flowing through the flow path 97 for a long time. By this structure, the bactericidal effect with respect to the hot water HW can be improved.

さらに、整流板９４ｃより下部の湯水ＨＷは、流路９７を流れる前に滞留領域９Ｃで紫外線殺菌灯９２の先端部９２ｂから照射される紫外線ＵＶに露光し、湯水ＨＷに含まれる雑菌の一部が殺菌される。
したがって、流路９７を流れる前に湯水ＨＷに含まれる雑菌の数を減らすことができ、湯水ＨＷが流路９７を流れるときの殺菌効果を向上できる。 Further, the hot water HW below the rectifying plate 94c is exposed to the ultraviolet UV irradiated from the tip end portion 92b of the ultraviolet germicidal lamp 92 in the staying region 9C before flowing through the flow path 97, and a part of germs contained in the hot water HW. Is sterilized.
Therefore, the number of germs contained in the hot water HW before flowing through the flow path 97 can be reduced, and the sterilizing effect when the hot water HW flows through the flow path 97 can be improved.

なお、例えば、図４の（ｂ）に示すように、全ての仕切板９５が、紫外線殺菌灯９２を中心とする周方向の同じ位置に備わっていてもよい。この場合、貫通孔９６を、整流板９４の順に、紫外線殺菌灯９２を中心とする周方向に交互に仕切板９５を挟んで形成すれば、湯水ＨＷが出湯口９１まで流れる流路９７の経路長を長くすることができる。 For example, as shown in FIG. 4B, all the partition plates 95 may be provided at the same circumferential position around the ultraviolet germicidal lamp 92. In this case, if the through holes 96 are formed in the order of the rectifying plates 94 with the partition plates 95 sandwiched alternately in the circumferential direction around the ultraviolet germicidal lamp 92, the path of the flow path 97 through which the hot water HW flows to the tap outlet 91. The length can be increased.

また、貯湯タンク９（図２参照）は、利用者が、流路９３ａ（図２参照）を流れる湯水の流量を調節可能に構成されていてもよい。
そのため、図５に示すように、滞留領域９Ｃと流路９３ａの境界に形成される入口部９３ｂの開度を調節する開度調節手段として流量調節弁９３ｃを備え、入口部９３ｂの開度を調節することで流路９３ａを流れる湯水の流量を調節する。 Moreover, the hot water storage tank 9 (refer FIG. 2) may be comprised so that a user can adjust the flow volume of the hot water which flows through the flow path 93a (refer FIG. 2).
Therefore, as shown in FIG. 5, a flow rate adjusting valve 93c is provided as an opening degree adjusting means for adjusting the opening degree of the inlet part 93b formed at the boundary between the stay region 9C and the flow path 93a, and the opening degree of the inlet part 93b is set. By adjusting, the flow rate of the hot water flowing through the flow path 93a is adjusted.

流量調節弁９３ｃは、例えば、紫外線殺菌灯９２を中心とする径方向に伸びるように、入口部９３ｂの位置に備わる回転軸９３ｃ１と、回転軸９３ｃ１の回りに回転する弁体９３ｃ２とを含んで構成される。
そして、弁体９３ｃ２が螺旋板９３と略垂直になると入口部９３ｂを閉鎖し、その状態から回転軸９３ｃ１の回りに回転すると、入口部９３ｂの開度が大きくなるように構成される。 The flow rate adjustment valve 93c includes, for example, a rotation shaft 93c1 provided at the position of the inlet portion 93b and a valve body 93c2 that rotates around the rotation shaft 93c1 so as to extend in the radial direction centering on the ultraviolet germicidal lamp 92. Composed.
When the valve body 93c2 becomes substantially perpendicular to the spiral plate 93, the inlet portion 93b is closed, and when the valve body 93c2 rotates around the rotation shaft 93c1 from this state, the opening degree of the inlet portion 93b is configured to increase.

そして、利用者が、貯湯タンク９の外部から図示しないハンドル等の操作によって弁体９３ｃ２を回転可能に構成すれば、利用者は流量調節弁９３ｃで流路９３ａの入口部９３ｂの開度を任意に調節でき、流路９３ａを流れる湯水の流量を調節できる。 If the user can configure the valve body 93c2 to be rotatable from the outside of the hot water storage tank 9 by operating a handle or the like (not shown), the user can arbitrarily set the opening of the inlet 93b of the flow path 93a with the flow rate adjusting valve 93c. The flow rate of hot water flowing through the flow path 93a can be adjusted.

または、図示しないモータ等の駆動装置で弁体９３ｃ２を回転するように構成してもよい。この構成の場合、利用者は、貯湯タンク９の外部からのスイッチ操作等によって図示しない駆動装置を駆動して弁体９３ｃ２を回転し、入口部９３ｂの開度を任意に調節する。 Or you may comprise so that the valve body 93c2 may be rotated with drive devices, such as a motor which is not shown in figure. In the case of this configuration, the user rotates a valve body 93c2 by driving a driving device (not shown) by a switch operation or the like from the outside of the hot water tank 9, and arbitrarily adjusts the opening degree of the inlet portion 93b.

入口部９３ｂの開度が小さくなると、流路９３ａにおける湯水の流量が少なくなる。そして、紫外線による湯水に対する殺菌効果をより向上できる。
一方、入口部９３ｂの開度が大きくなると、流路９３ａにおける湯水の流量が多くなり、利用者に大量の湯水を給湯可能になる。 When the opening degree of the inlet 93b is reduced, the flow rate of hot water in the flow path 93a is reduced. And the bactericidal effect with respect to the hot water by an ultraviolet-ray can be improved more.
On the other hand, when the opening degree of the inlet part 93b becomes large, the flow rate of hot water in the flow path 93a increases, and a large amount of hot water can be supplied to the user.

すなわち、利用者は、大量の給湯を必要とするか、より確実な殺菌を必要とするかに応じて入口部９３ｂの開度を調節することができる。 That is, the user can adjust the opening degree of the inlet portion 93b according to whether a large amount of hot water is required or more reliable sterilization is required.

また、図４の（ａ）、（ｂ）に示すように、複数の整流板９４と貫通孔９６とで流路９７が形成されている貯湯タンク９の場合、最も下部に配置される整流板９４（図４の（ａ）、（ｂ）では整流板９４ｃ）の貫通孔９６（図４の（ａ）、（ｂ）では貫通孔９６ｃ）が流路９７の入口部になる。したがって、最も下部に配置される整流板９４の貫通孔９６の開度を調節可能な構成とすれば、図５に示す流量調節弁９３ｃを備える構成と同等の効果を得ることができる。 4A and 4B, in the case of the hot water storage tank 9 in which a flow path 97 is formed by a plurality of rectifying plates 94 and through holes 96, the rectifying plate disposed at the lowermost portion. The through hole 96 (the through hole 96c in FIGS. 4 (a) and 4 (b)) of the flow path 97 is an inlet portion of 94 (the rectifying plate 94c in FIGS. 4 (a) and 4 (b)). Therefore, if the opening of the through hole 96 of the rectifying plate 94 arranged at the lowermost part is adjustable, the same effect as that of the structure including the flow rate adjusting valve 93c shown in FIG. 5 can be obtained.

なお、図２に示す紫外線殺菌灯９２及び螺旋板９３を含んで構成される殺菌構造が組み込まれる貯湯タンク９は、図１に示す空調給湯システム１００の他、空調ユニット６０が備わらない給湯システムに備えることも可能である。 The hot water storage tank 9 incorporating the sterilization structure including the ultraviolet sterilization lamp 92 and the spiral plate 93 shown in FIG. 2 is a hot water supply system that does not include the air conditioning unit 60 in addition to the air conditioning hot water supply system 100 shown in FIG. It is also possible to prepare for.

９貯湯タンク（タンク）
１３給湯栓（給湯端末）
２０補助加熱器
３０ヒートポンプユニット（熱源）
３０ａ、３０ｂ冷媒管
４０貯湯ユニット（貯液ユニット）
６０空調ユニット
６１冷暖房用熱交換器（凝縮器、蒸発器）
９２紫外線殺菌灯（紫外線照射手段）
９２ａ側面
９２ｂ先端部
９３螺旋板
９３ａ、９７流路
９３ｂ入口部
９３ｃ流量調節弁（開度調節手段）
９４整流板
９５仕切板
９６貫通孔
９Ｃ滞留領域
１００空調給湯システム
２０１圧縮機
２０２空気熱交換器（凝縮器、蒸発器）
２０３膨張弁（膨張機構） 9 Hot water storage tank (tank)
13 Hot-water tap (hot-water supply terminal)
20 Auxiliary heater 30 Heat pump unit (heat source)
30a, 30b Refrigerant tube 40 Hot water storage unit (liquid storage unit)
60 Air conditioning unit 61 Heat exchanger for air conditioning (condenser, evaporator)
92 UV germicidal lamp (UV irradiation means)
92a Side surface 92b Tip portion 93 Spiral plate 93a, 97 Flow path 93b Inlet portion 93c Flow rate adjusting valve (opening adjusting means)
94 Current plate 95 Partition plate 96 Through hole 9C Residence area 100 Air-conditioning hot water supply system 201 Compressor 202 Air heat exchanger (condenser, evaporator)
203 expansion valve (expansion mechanism)

Claims

Inside the tank that stores liquid,
A long ultraviolet irradiation means arranged to extend from the upper part toward the lower part;
A flow path for allowing the liquid to flow along the side surface of the ultraviolet irradiation means while turning around the ultraviolet irradiation means;
A retention region formed in communication with the flow path below the tip of the ultraviolet irradiation means and where the liquid is retained,
The tip protrudes into the stay region;
The liquid flowing through the flow path is exposed to ultraviolet rays irradiated from the side surface,
The tank sterilization structure is characterized in that the liquid in the staying region is exposed to ultraviolet rays irradiated from the tip portion.

The flow path is
2. The tank according to claim 1, wherein the tank is formed by a spiral plate that spreads from the side surface in a radial direction centering on the ultraviolet irradiation means and is twisted spirally along the axial direction of the ultraviolet irradiation means. Sterilization structure.

The flow path is
A plurality of parallel rectifying plates extending from the side surface in the radial direction around the ultraviolet irradiation means;
A partition plate that partitions each of the regions formed around the ultraviolet irradiation means by the rectifying plate at one position in a direction perpendicular to the rectifying plate;
A through hole penetrating the current plate,
The through-holes of the two adjacent rectifying plates are formed at positions sandwiching the partition plate that divides the region formed by the two rectifying plates in the circumferential direction centering on the ultraviolet irradiation means. The tank sterilization structure according to claim 1.

The opening degree adjustment means which adjusts the opening degree of the inlet part of the said flow path formed in the boundary of the said retention area | region and the said flow path is provided. Tank sterilization structure.

The tank sterilization structure according to any one of claims 1 to 4, further comprising an auxiliary heater for heating and sterilizing the liquid stored in the tank.

A heat source to boil the liquid to a predetermined boiling temperature;
A liquid storage unit for storing the liquid at the boiling temperature in a tank;
An air conditioning unit including at least a compressor, a condenser, an expansion mechanism, and a refrigeration cycle in which an evaporator is connected by a refrigerant pipe.
An air conditioning and hot water supply system that supplies the liquid stored in the tank to a user via a hot water supply terminal,
An air-conditioning hot-water supply system, wherein the tank has the tank sterilization structure according to any one of claims 1 to 5 incorporated therein.