JP5099001B2 - Heat pump hot water heating system - Google Patents

Heat pump hot water heating system Download PDF

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JP5099001B2
JP5099001B2 JP2008333493A JP2008333493A JP5099001B2 JP 5099001 B2 JP5099001 B2 JP 5099001B2 JP 2008333493 A JP2008333493 A JP 2008333493A JP 2008333493 A JP2008333493 A JP 2008333493A JP 5099001 B2 JP5099001 B2 JP 5099001B2
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refrigerant
hot water
valve
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flow path
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俊彦 高橋
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Fujitsu General Ltd
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    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Description

本発明は、ヒートポンプ式温水暖房システムに係わり、より詳細には、冷媒水熱交換器の温水流路を詰まらせるスケールや浮遊物等の詰まり要因物質を除去できるようにした構造に関する。   The present invention relates to a heat pump hot water heating system, and more particularly, to a structure that can remove clogging factors such as scales and floating substances that clog a hot water flow path of a refrigerant water heat exchanger.

従来のヒートポンプ式温水暖房システムとして、例えば、スケールや浮遊物による冷媒水熱交換器の詰まり等の温水流路異常に関して、信頼性の向上を図ったヒートポンプ給湯機が知られている。   As a conventional heat pump type hot water heating system, for example, a heat pump water heater is known in which reliability is improved with respect to a hot water flow path abnormality such as clogging of a refrigerant water heat exchanger due to a scale or suspended matter.

具体的には、図６に示すように、圧縮機１を有するヒートポンプ回路６（以下、冷媒回路６という）と、水ポンプ７を有する温水回路１０と、冷媒回路６の冷媒と温水回路１０の給湯水（以下、温水という）とが熱交換する冷媒水熱交換器２と、温水回路１０の詰まり検知手段Ａおよび詰まり除去手段Ｂとを備えたものであり、析出されたスケールや浮遊物等の詰まりによる温水回路１０の異常をいち早く検知することができるとともに、温水回路１０に略最大流量で加圧通水させるだけの簡単な方法で、温水回路１０の内面に付着したスケールや浮遊物等の詰まり要因物質の除去を容易に実現できて、ヒートポンプ給湯機の信頼性向上を図ることができるものである（例えば、特開２００４−１４４４４５号公報参照）。   Specifically, as shown in FIG. 6, a heat pump circuit 6 having a compressor 1 (hereinafter referred to as a refrigerant circuit 6), a hot water circuit 10 having a water pump 7, a refrigerant in the refrigerant circuit 6, and a hot water circuit 10. A refrigerant water heat exchanger 2 that exchanges heat with hot water (hereinafter referred to as hot water) and a clogging detection means A and a clogging removal means B of the hot water circuit 10 are provided. It is possible to quickly detect an abnormality in the hot water circuit 10 due to clogging of the water, and a scale or suspended matter attached to the inner surface of the hot water circuit 10 by a simple method of allowing the hot water circuit 10 to pass pressurized water at a substantially maximum flow rate. The clogging factor substance can be easily removed, and the reliability of the heat pump water heater can be improved (see, for example, JP-A-2004-144445).

このものにおいては、温水回路１０に加圧通水させることで詰まり要因物質を除去する構成になっているが、近年、ヒートポンプ式温水暖房システムの冷媒水熱交換器として、冷媒流路と温水流路とを一体的に積層することにより、小型化・高性能化を実現したものが提示されている。   In this configuration, the clogging factor substance is removed by passing pressurized water through the hot water circuit 10, but in recent years, as a refrigerant water heat exchanger of a heat pump type hot water heating system, a refrigerant flow path and a hot water flow The one that realizes miniaturization and high performance by laminating the road integrally is presented.

しかしながら、この冷媒流路と温水流路とを一体的に積層した冷媒水熱交換器をヒートポンプ式温水暖房システムに適用した場合、該冷媒水熱交換器を構成する温水流路は、スケールや浮遊物等の詰まり要因物質によって詰まりやすくなり、加圧通水によって生じる壁面剪断力だけでは、とくに、析出されたスケールを温水流路の表面から剥離・除去することが難しいという問題点を有していた。
特開２００４−１４４４４５号公報 However, when the refrigerant water heat exchanger in which the refrigerant flow path and the hot water flow path are integrally laminated is applied to a heat pump type hot water heating system, the hot water flow path constituting the refrigerant water heat exchanger is not scaled or floated. It is easy to clog with clogging substances such as substances, and it is difficult to peel and remove the deposited scale from the surface of the hot water channel, especially with only the wall shear force generated by pressurized water flow. It was.
JP 2004-144445 A

そこで、本発明は上述した課題を解決するためになされたものであって、その目的は、冷媒水熱交換器を構成する温水流路からスケールや浮遊物等の詰まり要因物質を除去できるようにしたヒートポンプ式温水暖房システムを提供することにある。   Therefore, the present invention has been made to solve the above-described problems, and its purpose is to remove clogging factors such as scales and suspended solids from the hot water flow path constituting the refrigerant water heat exchanger. An object of the present invention is to provide a heat pump type hot water heating system.

上述した目的を達成できるように構成するため、本発明は以下に示す特徴を備えている。   In order to achieve the above-described object, the present invention has the following features.

圧縮機を有するヒートポンプ回路と、水ポンプを有する温水回路と、前記ヒートポンプ回路の冷媒と前記温水回路の温水とを熱交換する冷媒流路と温水流路とが一体的に積層された冷媒水熱交換器と、前記ヒートポンプ回路内の冷媒を回収ボンベに回収し前記温水流路を前記冷媒流路側に変形させる冷媒回収手段と、前記温水流路を詰まらせる詰まり要因物質を除去する除去手段と、を有してなることを特徴としている。   Refrigerant water heat in which a heat pump circuit having a compressor, a hot water circuit having a water pump, a refrigerant flow path for exchanging heat between the refrigerant of the heat pump circuit and the hot water of the hot water circuit, and the hot water flow path are integrally laminated. An exchanger, a refrigerant recovery means for recovering the refrigerant in the heat pump circuit in a recovery cylinder and deforming the hot water flow path toward the refrigerant flow path, and a removing means for removing a clogging factor substance that clogs the hot water flow path; It is characterized by having.

また、前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、冷媒回収装置と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回収弁が開放されて前記冷媒回収装置で前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁および前記排水弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴としている。 The refrigerant recovery means includes a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, a refrigerant recovery apparatus, and the recovery cylinder.
The removing means has a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel and a drainage valve provided in the drainage channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant recovery valve is opened and the refrigerant is recovered in the refrigerant recovery cylinder by the refrigerant recovery device, while the water supply valve and the drain valve are opened. The water channel is formed in a direction opposite to the hot water flow of the hot water flow channel and from the water supply channel to the drainage channel through the hot water flow channel.

また、前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、冷媒回収装置と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁と、前記温水回路に接続された加圧水路と、同加圧水路に順次設けられた低圧側加圧弁および低圧側加圧用圧縮機とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回収弁が開放されて前記冷媒回収装置で前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁、前記排水弁および前記低圧側加圧弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路および前記低圧側加圧用圧縮機から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴としている。 The refrigerant recovery means includes a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, a refrigerant recovery apparatus, and the recovery cylinder.
The removal means includes a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel, a drainage valve provided in the drainage channel, and a pressurized water channel connected to the hot water circuit. And a low pressure side pressurizing valve and a low pressure side pressurizing compressor sequentially provided in the pressurized water channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant recovery valve is opened and the refrigerant is recovered in the refrigerant recovery cylinder by the refrigerant recovery device, while the water supply valve, the drain valve, and the low pressure The side pressurization valve is opened, and a water passage is formed in a direction opposite to the hot water flow of the hot water flow channel, and from the water supply channel and the low pressure side pressurizing compressor to the drainage channel through the hot water flow channel. It is characterized by.

また、前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回路閉止弁および冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回路閉止弁が閉じられ前記冷媒回収弁が開放されて前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁および前記排水弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴としている。 The refrigerant recovery means includes a refrigerant circuit closing valve and a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, and the recovery cylinder.
The removing means has a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel and a drainage valve provided in the drainage channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant circuit closing valve is closed, the refrigerant recovery valve is opened, and the refrigerant is recovered in the refrigerant recovery cylinder, while the water supply valve and the drain valve Is opened, and the water channel is formed in a direction opposite to the hot water flow of the hot water channel and from the water supply channel to the drainage channel through the hot water channel.

また、前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回路閉止弁および冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁と、前記温水回路に接続された加圧水路と、同加圧水路に順次設けられた低圧側加圧弁および低圧側加圧用圧縮機とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回路閉止弁が閉じられ前記冷媒回収弁が開放されて前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁、前記排水弁および前記低圧側加圧弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路および前記低圧側加圧用圧縮機から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴としている。 The refrigerant recovery means includes a refrigerant circuit closing valve and a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, and the recovery cylinder.
The removal means includes a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel, a drainage valve provided in the drainage channel, and a pressurized water channel connected to the hot water circuit. And a low pressure side pressurizing valve and a low pressure side pressurizing compressor sequentially provided in the pressurized water channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant circuit closing valve is closed, the refrigerant recovery valve is opened, and the refrigerant is recovered in the refrigerant recovery cylinder, while the water supply valve, the drain valve And the low-pressure side pressurizing valve is opened, and a water path is formed in a direction opposite to the hot water flow of the hot water flow path, from the water supply path and the low pressure side pressurizing compressor to the drainage path via the hot water flow path. It is characterized by being.

本発明によれば、冷媒水熱交換器を構成する温水流路を詰まらせないように、該温水流路からスケールや浮遊物といった詰まり要因物質を除去できるようにしたヒートポンプ式温水暖房システムを提供できる。   According to the present invention, there is provided a heat pump hot water heating system capable of removing clogging factors such as scales and floating substances from the hot water flow path so as not to clog the hot water flow path constituting the refrigerant water heat exchanger. it can.

次に、本発明の実施形態について図面を参照しながら説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

図１は本発明によるヒートポンプ式温水暖房システムの第一の実施の形態を示す回路図、図２は本発明によるヒートポンプ式温水暖房システムの第二の実施の形態を示す回路図、図３は本発明によるヒートポンプ式温水暖房システムの第三の実施の形態を示す回路図、図４は本発明によるヒートポンプ式温水暖房システムの第四の実施の形態を示す回路図、図５は本発明によるヒートポンプ式温水暖房システムの要部説明図で、（Ａ）は冷媒水熱交換器の斜視図、（Ｂ）は図５（Ａ）に示すＡ矢視図である。   FIG. 1 is a circuit diagram showing a first embodiment of a heat pump hot water heating system according to the present invention, FIG. 2 is a circuit diagram showing a second embodiment of the heat pump hot water heating system according to the present invention, and FIG. FIG. 4 is a circuit diagram showing a fourth embodiment of the heat pump type hot water heating system according to the present invention, and FIG. 5 is a heat pump type according to the present invention. It is principal part explanatory drawing of a hot water heating system, (A) is a perspective view of a refrigerant | coolant water heat exchanger, (B) is A arrow view shown to FIG. 5 (A).

本発明によるヒートポンプ式温水暖房システムは、図１乃至図４に示すように、圧縮機１と、凝縮器として用いられる冷媒水熱交換器２と、膨張弁３と、送風機４を対向させた蒸発器５とを順次接続して冷媒を矢印ａのように循環する冷媒回路６と、水ポンプ７と、冷媒水熱交換器２と、膨張タンク８と、放熱器９とを順次接続して温水を矢印ｂのように循環する温水回路１０とを備えている。   As shown in FIGS. 1 to 4, the heat pump hot water heating system according to the present invention is an evaporation in which a compressor 1, a refrigerant water heat exchanger 2 used as a condenser, an expansion valve 3, and a blower 4 are opposed to each other. The refrigerant circuit 6 that circulates the refrigerant as shown by the arrow a, the water pump 7, the refrigerant water heat exchanger 2, the expansion tank 8, and the radiator 9 are connected in sequence to the hot water And a hot water circuit 10 that circulates as shown by an arrow b.

上述した冷媒水熱交換器２は、図５（Ａ）および図５（Ｂ）に示すように、冷媒回路６を循環する冷媒のための冷媒流路２ａと、該冷媒流路２ａに連通することのないように近接させ、温水回路１０を循環する温水のための温水流路２ｂとを、一体的に積層した構造で実現している小型で高効率のものとして構成されている。   As shown in FIGS. 5A and 5B, the refrigerant water heat exchanger 2 described above communicates with the refrigerant flow path 2a for the refrigerant circulating in the refrigerant circuit 6 and the refrigerant flow path 2a. The hot water flow path 2b for the hot water circulating in the hot water circuit 10 is made close to each other so as not to occur, and is configured as a small and highly efficient one realized by a structure in which the hot water flow paths 2b are integrally laminated.

ここで、上述したヒートポンプ式温水暖房システムの構成における動作について、以下に説明する。   Here, the operation | movement in the structure of the heat pump type hot water heating system mentioned above is demonstrated below.

圧縮機１で高温高圧に圧縮した冷媒は、冷媒回路６により、冷媒水熱交換器２を構成している冷媒流路２ａに循環して、冷媒水熱交換器２を構成している温水流路２ｂを流通する温水の加熱を促進する。   The refrigerant compressed to high temperature and high pressure by the compressor 1 is circulated by the refrigerant circuit 6 to the refrigerant flow path 2a constituting the refrigerant water heat exchanger 2, and the hot water flow constituting the refrigerant water heat exchanger 2 is obtained. The heating of warm water flowing through the path 2b is promoted.

温水流路２ｂを流通する温水によって冷却された高圧の冷媒は、冷媒流路２ａから膨張弁３に循環して膨張し、低温低圧となって蒸発器５に送られる。   The high-pressure refrigerant cooled by the hot water flowing through the hot water flow path 2b circulates from the refrigerant flow path 2a to the expansion valve 3 to expand, and is sent to the evaporator 5 at a low temperature and low pressure.

低温低圧となって蒸発器５に送られた冷媒は、送風機４により空気との熱交換が促進されることによって吸熱したのち、圧縮機１に戻る。   The refrigerant sent to the evaporator 5 at low temperature and low pressure absorbs heat by promoting heat exchange with air by the blower 4, and then returns to the compressor 1.

冷媒水熱交換器２で冷媒の熱を奪うことによって加熱された温水は、温水回路１０により、放熱器９に循環してユーザの部屋（被空調室）を暖房する。   The hot water heated by taking the heat of the refrigerant in the refrigerant water heat exchanger 2 is circulated to the radiator 9 by the hot water circuit 10 to heat the user's room (air-conditioned room).

ユーザの部屋（被空調室）を暖房した温水は、水ポンプ７に循環し、水ポンプ７は温水を加圧して、冷媒水熱交換器２に向けて温水回路１０に送り出すことになる。温水回路１０は密閉回路になっており、温度変動に伴う温水の容積変化は、膨張タンク８によって吸収されるようになっている。   The hot water that has heated the user's room (air-conditioned room) is circulated to the water pump 7, and the water pump 7 pressurizes the hot water and sends it to the hot water circuit 10 toward the refrigerant water heat exchanger 2. The hot water circuit 10 is a sealed circuit, and the volume change of the hot water accompanying the temperature fluctuation is absorbed by the expansion tank 8.

ところで、冷媒流路２ａと温水流路２ｂとを積層してなる冷媒水熱交換器２は、伝熱の基礎理論として、流路を小径にするほど均質に加熱・冷却（伝熱）することができる。しかし、流路が小径で短い場合は、熱交換可能な熱量は制限を受けることになる。そこで、多数の小径な流路に冷媒や水を高速流で流すことができれば、交換熱量を増加させて高効率化を実現できる。つまり、小径の流路を多数有することで、小型であっても高効率な熱交換器とすることができる。   By the way, the refrigerant | coolant water heat exchanger 2 formed by laminating | stacking the refrigerant | coolant flow path 2a and the warm water flow path 2b heats and cools (heat-transfers) uniformly, so that a flow path is made small as a basic theory of heat transfer. Can do. However, when the flow path is small and short, the amount of heat that can be exchanged is limited. Therefore, if refrigerant and water can be flowed through a large number of small-diameter flow paths at a high speed, the exchange heat amount can be increased and high efficiency can be realized. In other words, by having a large number of small-diameter flow paths, a highly efficient heat exchanger can be obtained even if it is small.

そこで、冷媒水熱交換器２を構成する冷媒用の流路および温水用の流路を、図５（Ａ）の矢印Ａに示す前後方向に延びる多数の冷媒流路２ａと、該冷媒流路２ａに直交する方向に延びる多数の温水流路２ｂとを一体的に積層することにより、小型化・高性能化を実現している。   Therefore, the refrigerant flow path and the hot water flow path constituting the refrigerant water heat exchanger 2 are provided with a number of refrigerant flow paths 2a extending in the front-rear direction indicated by arrow A in FIG. A large number of hot water flow paths 2b extending in a direction orthogonal to 2a are integrally laminated to achieve miniaturization and high performance.

冷媒流路２ａおよび温水流路２ｂを一体的に積層した冷媒水熱交換器２は、例えば材質の異なる構成部材を積層した状態で、真空雰囲気中において加熱しながら加圧することにより、積層された構成部材間の界面であたかも同一の材料のように接合された一体型積層構造としている。   The refrigerant water heat exchanger 2 in which the refrigerant flow path 2a and the hot water flow path 2b are integrally laminated is laminated by, for example, applying pressure while heating in a vacuum atmosphere in a state in which constituent members of different materials are laminated. It is an integrated laminated structure in which the interfaces between the constituent members are joined as if they were the same material.

なお、冷媒流路２ａと温水流路２ｂとは、互いに直交する方向に限らず、互いに連通することがなければどのような角度で交叉してもよいし、冷却流路および加熱流路としての出入口さえ確保できれば、互いに向き合うように流れる平行な流れ（対向流）であってもよいし、同じ向きに流れる平行な流れであってもよい。   The refrigerant flow path 2a and the hot water flow path 2b are not limited to directions orthogonal to each other, and may intersect at any angle as long as they do not communicate with each other. As long as only the entrance / exit can be secured, the parallel flows (opposite flows) flowing so as to face each other may be used, or the parallel flows flowing in the same direction may be used.

また、冷媒流路２ａと温水流路２ｂとは、ここでは夫々が直線的に形成されたものとして説明するが、直線に限らず曲線的に形成されてもよい。但し、その場合は流路抵抗が増加して加熱流体および冷却流体を送る圧縮機１や水ポンプ７の負荷が高まり、エネルギ損失が多くなる恐れがあるので、こうした点を考慮した上で形状や構造は設計される必要がある。   Moreover, although the refrigerant | coolant flow path 2a and the warm water flow path 2b are each demonstrated here as what was formed linearly, you may form not only in a straight line but in a curve. However, in that case, the flow path resistance increases and the load on the compressor 1 and the water pump 7 for sending the heating fluid and the cooling fluid increases, which may increase energy loss. The structure needs to be designed.

冷媒流路２ａや温水流路２ｂが一体的に積層されている場合、例えば図５（Ｂ）に示すように、温水流路２ｂが浮遊物１１（以下、固形分粒子１１という）や、析出された図示しないスケール等によって閉塞されてしまう恐れがあるため、本発明においては、該温水流路２ｂから、固形分粒子１１や析出された図示しないスケール等を除去できるように構成している。   When the refrigerant flow path 2a and the hot water flow path 2b are integrally laminated, for example, as shown in FIG. 5 (B), the hot water flow path 2b may be suspended matter (hereinafter referred to as solid particles 11) or precipitated. In the present invention, the solid content particles 11 and the deposited scale (not shown) can be removed from the hot water flow path 2b.

次に、冷媒水熱交換器２を構成する温水流路２ｂを清掃する際、この温水流路２ｂから固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去し、外部に排出できるようにした構成について、第一の実施の形態として示す図１と、図５（Ａ）および図５（Ｂ）とに基づいて説明する。   Next, when cleaning the hot water flow path 2b constituting the refrigerant water heat exchanger 2, the clogging factor substances such as solid particles 11 and deposited scale not shown are removed from the hot water flow path 2b and discharged to the outside. The configuration that can be performed will be described with reference to FIG. 1 shown as the first embodiment, and FIGS. 5 (A) and 5 (B).

冷媒回路６における圧縮機１と蒸発器５との間に冷媒回収路６ａが接続され、この冷媒回収路６ａに順次冷媒回収弁１２と、冷媒回収機１４と、冷媒回収ボンベ１３とが設けられることで、該冷媒回収ボンベ１３に冷媒を回収する冷媒回収手段を構成する一方、温水回路１０における冷媒水熱交換器２の温水流路２ｂと、膨張タンク８との間に給水路１０ａが接続され、この給水路１０ａに給水弁１５が設けられるとともに、温水流路２ｂと、水ポンプ７との間に排水路１０ｂが接続され、この排水路１０ｂに排水弁１６が設けられることで、冷媒水熱交換器２の温水流路２ｂから、固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去する除去手段を構成している。   A refrigerant recovery path 6a is connected between the compressor 1 and the evaporator 5 in the refrigerant circuit 6, and a refrigerant recovery valve 12, a refrigerant recovery machine 14, and a refrigerant recovery cylinder 13 are sequentially provided in the refrigerant recovery path 6a. Thus, the refrigerant recovery means for recovering the refrigerant is configured in the refrigerant recovery cylinder 13, while the water supply path 10 a is connected between the hot water flow path 2 b of the refrigerant water heat exchanger 2 in the hot water circuit 10 and the expansion tank 8. In addition, the water supply valve 15 is provided in the water supply path 10a, the drainage path 10b is connected between the hot water flow path 2b and the water pump 7, and the drainage valve 16 is provided in the drainage path 10b. A removing means for removing the clogging substances such as the solid particles 11 and the deposited scale (not shown) is configured from the hot water flow path 2b of the water heat exchanger 2.

これにより、冷媒回収弁１２を開放し、冷媒回収機１４で冷媒回路６から図１の矢印のように回収した冷媒を冷媒回収ボンベ１３に貯留することによって、冷媒流路２ａを減圧する一方、給水路１０ａの給水弁１５を開放し、図１の矢印ｃに示すように流れる水の圧力によって、温水流路２ｂを冷媒流路２ａよりも高圧にし、排水弁１６を開放して温水流路２ｂを流通させた水を開放された排水弁１６から排水路１０ｂに排出することによって、該温水流路２ｂを閉塞している固形分粒子１１や、析出された図示しないスケール等を外部に排出する水路が形成される。   Thus, the refrigerant recovery valve 12 is opened, and the refrigerant recovered by the refrigerant recovery machine 14 from the refrigerant circuit 6 as indicated by the arrow in FIG. The water supply valve 15 of the water supply path 10a is opened, and the hot water flow path 2b is made higher than the refrigerant flow path 2a by the pressure of the flowing water as shown by the arrow c in FIG. 1, and the drain valve 16 is opened to open the hot water flow path. By discharging the water that has circulated 2b from the open drain valve 16 to the drainage channel 10b, the solid particles 11 blocking the hot water channel 2b, the deposited scale not shown, etc. are discharged to the outside. A water channel is formed.

その時、減圧された冷媒流路２ａよりも温水流路２ｂの側が高圧になったことで、図５（Ｂ）に示す二点鎖線のように該温水流路２ｂが拡大して、その内径をなす壁面が圧力差によって冷媒流路２ａの側に湾曲するように変形している。   At that time, the hot water flow path 2b side becomes higher than the depressurized refrigerant flow path 2a, so that the hot water flow path 2b expands as shown by a two-dot chain line shown in FIG. The wall surface formed is deformed so as to bend toward the refrigerant flow path 2a due to the pressure difference.

これによって、とくに温水流路２ｂ内で析出された図示しないスケールに変形や亀裂が生じることになり、温水流路２ｂを流通させた水によって生じる壁面剪断力で、該スケールを該温水流路２ｂの表面から剥離・除去できることになる。   As a result, the scale (not shown) deposited in the hot water flow path 2b is particularly deformed or cracked, and the scale is removed from the scale by the wall shear force generated by the water flowing through the hot water flow path 2b. It can be peeled off and removed from the surface.

その際、温水回路１０を循環する温水が温水流路２ｂを流通しながら該温水流路２ｂにスケールを析出するのに対し、この温水流路２ｂに逆向きの水を流通させることにより、スケール析出時の流れに逆行する水の流れによって生じる壁面剪断力でスケールを剥離・除去できる。   At this time, the hot water circulating in the hot water circuit 10 deposits the scale in the hot water flow channel 2b while flowing through the hot water flow channel 2b, while the water in the opposite direction is circulated in the hot water flow channel 2b. The scale can be peeled and removed by the wall shear force generated by the flow of water that runs counter to the flow during precipitation.

また、温水流路２ｂは、その内径をなす壁面が冷媒流路２ａの側に湾曲変形して内径Ｄ２から内径Ｄ３のように拡がり、図５（Ｂ）に示す固形分粒子１１は、その外径Ｄ１と微細流路２ｂの内径Ｄ３との関係が「Ｄ１＜Ｄ３」となることで、該温水流路２ｂの表面から剥離・除去された図示しないスケールと一緒になって、温水回路１０を循環する温水流と逆向きであって、給水路１０ａから冷媒水熱交換器２の温水流路２ｂを経て排水路１０ｂに向かう水流ｃにより、容易に外部に排出されるようになる。   In addition, the wall surface of the hot water flow path 2b is curved and deformed toward the refrigerant flow path 2a and expands from the inner diameter D2 to the inner diameter D3. The solid particles 11 shown in FIG. Since the relationship between the diameter D1 and the inner diameter D3 of the fine flow path 2b is “D1 <D3”, the hot water circuit 10 is combined with the scale (not shown) peeled and removed from the surface of the hot water flow path 2b. The water flow is in the opposite direction to the circulating hot water flow, and is easily discharged to the outside by the water flow c from the water supply channel 10a to the drainage channel 10b through the hot water flow channel 2b of the refrigerant water heat exchanger 2.

次に、冷媒水熱交換器２を構成する温水流路２ｂを清掃する際、この温水流路２ｂから固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去し、外部に排出できるようにした構成について、第二の実施の形態として示す図２と、図５（Ａ）および図５（Ｂ）とに基づいて説明する。   Next, when cleaning the hot water flow path 2b constituting the refrigerant water heat exchanger 2, the clogging factor substances such as solid particles 11 and deposited scale not shown are removed from the hot water flow path 2b and discharged to the outside. The configuration which can be performed will be described based on FIG. 2 shown as the second embodiment, and FIGS. 5A and 5B.

冷媒回路６における圧縮機１と蒸発器５との間に冷媒回収路６ａが接続され、この冷媒回収路６ａに、順次冷媒回収弁１２と、冷媒回収機１４と、冷媒回収ボンベ１３とが設けられることで、該冷媒回収ボンベ１３に冷媒を回収する冷媒回収手段を構成する一方、温水回路１０における冷媒水熱交換器２の温水流路２ｂと、膨張タンク８との間に給水路１０ａが接続され、この給水路１０ａに給水弁１５が設けられ、給水路１０ａと温水流路２ｂとの間に加圧水路１０ｃが接続され、この加圧水路１０ｃに順次低圧側加圧弁１７と、低圧側加圧用圧縮機１８とが設けられるとともに、温水流路２ｂと水ポンプ７との間に排水路１０ｂが接続され、この排水路１０ｂに排水弁１６が設けられることで、冷媒水熱交換器２の温水流路２ｂから、固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去する除去手段を構成している。   A refrigerant recovery path 6a is connected between the compressor 1 and the evaporator 5 in the refrigerant circuit 6, and a refrigerant recovery valve 12, a refrigerant recovery machine 14, and a refrigerant recovery cylinder 13 are sequentially provided in the refrigerant recovery path 6a. As a result, the refrigerant recovery means for recovering the refrigerant is configured in the refrigerant recovery cylinder 13, while the water supply path 10 a is provided between the hot water flow path 2 b of the refrigerant water heat exchanger 2 in the hot water circuit 10 and the expansion tank 8. The water supply valve 15 is provided in the water supply channel 10a, and the pressurized water channel 10c is connected between the water supply channel 10a and the hot water channel 2b. The low-pressure side pressurizing valve 17 and the low-pressure side pressurizing valve 17 are sequentially connected to the pressurized water channel 10c. The compressor 18 for pressure is provided, and the drainage channel 10b is connected between the hot water channel 2b and the water pump 7, and the drainage valve 16 is provided in the drainage channel 10b, so that the refrigerant water heat exchanger 2 From the hot water flow path 2b, Min particles 11 and constitute a removal means for removing the deposited scale, such as clogging factors material (not shown).

これにより、冷媒回収弁１２を開放し、冷媒回収機１４で冷媒回路６から矢印のように回収した冷媒を冷媒回収ボンベ１３に貯留することによって、冷媒流路２ａを減圧する一方、給水路１０ａの給水弁１５を開放するとともに、低圧側加圧弁１７を開放して低圧側加圧用圧縮機１８を起動し、図１の矢印ｃおよび矢印ｄに示すように流れる水の圧力によって、温水流路２ｂを冷媒流路２ａよりも高圧にし、排水弁１６を開放して温水流路２ｂを流通させた水を排出することによって、該温水流路２ｂを閉塞している固形分粒子１１や、析出された図示しないスケール等を外部に排出する水路が形成される。   As a result, the refrigerant recovery valve 12 is opened, and the refrigerant recovered by the refrigerant recovery machine 14 from the refrigerant circuit 6 as indicated by the arrow is stored in the refrigerant recovery cylinder 13, whereby the refrigerant flow path 2a is depressurized while the water supply path 10a. The water supply valve 15 is opened, the low pressure side pressurization valve 17 is opened and the low pressure side pressurization compressor 18 is started, and the hot water flow path is determined by the pressure of the flowing water as shown by arrows c and d in FIG. 2b is made to have a pressure higher than that of the refrigerant flow path 2a, and the drain valve 16 is opened to discharge the water flowing through the hot water flow path 2b, thereby solid particles 11 blocking the hot water flow path 2b, A water channel for discharging the scale (not shown) and the like to the outside is formed.

その時、減圧された冷媒流路２ａよりも温水流路２ｂが高圧になったことで、図５（Ｂ）に示す二点鎖線のように該温水流路２ｂが拡大して、その内径をなす壁面が圧力差によって冷媒流路２ａの側に湾曲するように変形している。   At that time, the hot water flow path 2b becomes higher than the decompressed refrigerant flow path 2a, so that the hot water flow path 2b expands and forms its inner diameter as shown by a two-dot chain line shown in FIG. The wall surface is deformed so as to bend toward the refrigerant flow path 2a due to the pressure difference.

これによって、とくに、温水流路２ｂ内で析出された図示しないスケールに変形や亀裂が生じることになり、温水流路２ｂを流通させた水によって生じる壁面剪断力で、該スケールを該温水流路２ｂの表面から剥離・除去できることになる。   As a result, the scale (not shown) deposited in the hot water channel 2b is particularly deformed or cracked, and the scale is removed from the scale by the wall shearing force generated by the water flowing through the hot water channel 2b. It can be peeled and removed from the surface of 2b.

その際、温水回路１０を循環する温水が温水流路２ｂを流通しながら該温水流路２ｂにスケールを析出するのに対し、この温水流路２ｂに逆向きの水を流通させることにより、スケール析出時の流れに逆行する水の流れによって生じる壁面剪断力でスケールを剥離・除去できる。   At this time, the hot water circulating in the hot water circuit 10 deposits the scale in the hot water flow channel 2b while flowing through the hot water flow channel 2b, while the water in the opposite direction is circulated in the hot water flow channel 2b. The scale can be peeled and removed by the wall shear force generated by the flow of water that runs counter to the flow during precipitation.

また、温水流路２ｂは、その内径をなす壁面が冷媒流路２ａの側に湾曲変形して内径Ｄ２から内径Ｄ３のように拡がり、図５（Ｂ）に示す固形分粒子１１は、その外径Ｄ１と温水流路２ｂの内径Ｄ３との関係が「Ｄ１＜Ｄ３」となることで、該温水流路２ｂの表面から剥離・除去された図示しないスケールと一緒になって、温水回路１０を循環する温水流と逆向きであって、給水路１０ａから冷媒水熱交換器２の温水流路２ｂを経て排水路１０ｂに向かう水流ｃにより、容易に外部に排出されるようになる。   In addition, the wall surface of the hot water flow path 2b is curved and deformed toward the refrigerant flow path 2a and expands from the inner diameter D2 to the inner diameter D3. The solid particles 11 shown in FIG. Since the relationship between the diameter D1 and the inner diameter D3 of the hot water flow path 2b is “D1 <D3”, the hot water circuit 10 is combined with a scale (not shown) peeled and removed from the surface of the hot water flow path 2b. The water flow is in the opposite direction to the circulating hot water flow, and is easily discharged to the outside by the water flow c from the water supply channel 10a to the drainage channel 10b through the hot water flow channel 2b of the refrigerant water heat exchanger 2.

次に、冷媒水熱交換器２を構成する温水流路２ｂを清掃する際、この温水流路２ｂから固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去し、外部に排出できるようにした構成について、第三の実施の形態として示す図３と、図５（Ａ）および図５（Ｂ）とに基づいて説明する。   Next, when cleaning the hot water flow path 2b constituting the refrigerant water heat exchanger 2, the clogging factor substances such as solid particles 11 and deposited scale not shown are removed from the hot water flow path 2b and discharged to the outside. The configuration which can be performed will be described based on FIG. 3 shown as the third embodiment, and FIGS. 5A and 5B.

冷媒回路６における圧縮機１と冷媒水熱交換器２の冷媒流路２ａとの間に冷媒回収路６ａが接続され、この冷媒回収路６ａに順次冷媒回収弁１２と、冷媒回収ボンベ１３とが設けられることで、該冷媒回収ボンベ１３に冷媒を回収する冷媒回収手段を構成する一方、温水回路１０における冷媒水熱交換器２の温水流路２ｂと、膨張タンク８との間に給水路１０ａが接続され、この給水路１０ａに給水弁１５が設けられるとともに、温水流路２ｂと水ポンプ７との間に排水路１０ｂが接続され、この排水路１０ｂに排水弁１６が設けられることで、冷媒水熱交換器２の温水流路２ｂから、固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去する除去手段を構成している。   A refrigerant recovery path 6a is connected between the compressor 1 in the refrigerant circuit 6 and the refrigerant flow path 2a of the refrigerant water heat exchanger 2, and a refrigerant recovery valve 12 and a refrigerant recovery cylinder 13 are sequentially connected to the refrigerant recovery path 6a. By being provided, the refrigerant recovery means for recovering the refrigerant is configured in the refrigerant recovery cylinder 13, while the water supply path 10 a is provided between the hot water flow path 2 b of the refrigerant water heat exchanger 2 in the hot water circuit 10 and the expansion tank 8. The water supply valve 15 is provided in the water supply channel 10a, the drainage channel 10b is connected between the hot water channel 2b and the water pump 7, and the drainage valve 16 is provided in the drainage channel 10b. The removal means which removes clogging factor substances, such as the solid content particle | grains 11 and the scale which is not shown in figure from the warm water flow path 2b of the refrigerant | coolant water heat exchanger 2, is comprised.

これにより、冷媒回路閉止弁１９で冷媒回路６を閉止し、冷媒回収弁１２を開放して冷媒回路６から矢印のように回収した冷媒を冷媒回収ボンベ１３に貯留することによって、冷媒流路２ａを減圧する一方、温水回路１０の給水弁１５を開放し、図３の矢印ｃに示すように流れる水の圧力によって、温水流路２ｂを冷媒流路２ａよりも高圧にし、排水弁１６を開放して温水流路２ｂを流通させた水を排出することによって、該温水流路２ｂを閉塞している固形分粒子１１や、析出された図示しないスケールを外部に排出する水路が形成される。   Thereby, the refrigerant circuit 6 is closed by the refrigerant circuit closing valve 19, the refrigerant recovery valve 12 is opened, and the refrigerant recovered from the refrigerant circuit 6 as indicated by the arrow is stored in the refrigerant recovery cylinder 13, whereby the refrigerant flow path 2a. While the pressure is reduced, the water supply valve 15 of the hot water circuit 10 is opened, and the hot water flow path 2b is made higher than the refrigerant flow path 2a by the pressure of the flowing water as shown by the arrow c in FIG. By discharging the water flowing through the hot water flow channel 2b, a solid channel 11 closing the hot water flow channel 2b and a water channel for discharging the deposited scale (not shown) to the outside are formed.

その時、減圧された冷媒流路２ａよりも温水流路２ｂが高圧になったことで、図５（Ｂ）に示す二点鎖線のように該温水流路２ｂが拡大して、その内径をなす壁面が圧力差によって冷媒流路２ａの側に湾曲するように変形している。   At that time, the hot water flow path 2b becomes higher than the decompressed refrigerant flow path 2a, so that the hot water flow path 2b expands and forms its inner diameter as shown by a two-dot chain line shown in FIG. The wall surface is deformed so as to bend toward the refrigerant flow path 2a due to the pressure difference.

また、冷媒回路閉止弁１９で冷媒回路６を閉止し、冷媒回収弁１２を開放して冷媒回路６から矢印のように回収した冷媒を冷媒回収ボンベ１３に貯留できるように構成したことで、上述した第一の実施の形態および第二の実施の形態のように、冷媒回収機１４を用いるのに較べて、簡便な冷媒回路閉止弁１９を用いることによりコスト的に有利な構成になる。   Further, the refrigerant circuit 6 is closed by the refrigerant circuit closing valve 19, the refrigerant recovery valve 12 is opened, and the refrigerant recovered from the refrigerant circuit 6 as indicated by the arrow can be stored in the refrigerant recovery cylinder 13. As in the first embodiment and the second embodiment, using a simple refrigerant circuit closing valve 19 is advantageous in terms of cost compared to using the refrigerant recovery machine 14.

これによって、とくに、温水流路２ｂ内で析出された図示しないスケールに変形や亀裂が生じることになり、温水流路２ｂを流通させた水によって生じる壁面剪断力で、該スケールを該温水流路２ｂの表面から剥離・除去できることになる。   As a result, the scale (not shown) deposited in the hot water channel 2b is particularly deformed or cracked, and the scale is removed from the scale by the wall shearing force generated by the water flowing through the hot water channel 2b. It can be peeled and removed from the surface of 2b.

その際、温水回路１０を循環する温水が温水流路２ｂを流通しながら該温水流路２ｂにスケールを析出するのに対し、この温水流路２ｂに逆向きの水を流通させることにより、スケール析出時の流れに逆行する水の流れによって生じる壁面剪断力でスケールを剥離・除去できる。   At this time, the hot water circulating in the hot water circuit 10 deposits the scale in the hot water flow channel 2b while flowing through the hot water flow channel 2b, while the water in the opposite direction is circulated in the hot water flow channel 2b. The scale can be peeled and removed by the wall shear force generated by the flow of water that runs counter to the flow during precipitation.

また、温水流路２ｂは、その内径をなす壁面が冷媒流路２ａの側に湾曲変形して内径Ｄ２から内径Ｄ３のように拡がり、図５（Ｂ）に示す固形分粒子１１は、その外径Ｄ１と温水流路２ｂの内径Ｄ３との関係が「Ｄ１＜Ｄ３」となることで、該温水流路２ｂの表面から剥離・除去された図示しないスケールと一緒になって、温水回路１０を循環する温水流と逆向きであって、給水路１０ａから冷媒水熱交換器２の温水流路２ｂを経て排水路１０ｂに向かう水流ｃにより、容易に外部に排出されるようになる。   In addition, the wall surface of the hot water flow path 2b is curved and deformed toward the refrigerant flow path 2a and expands from the inner diameter D2 to the inner diameter D3. The solid particles 11 shown in FIG. Since the relationship between the diameter D1 and the inner diameter D3 of the hot water flow path 2b is “D1 <D3”, the hot water circuit 10 is combined with a scale (not shown) peeled and removed from the surface of the hot water flow path 2b. The water flow is in the opposite direction to the circulating hot water flow, and is easily discharged to the outside by the water flow c from the water supply channel 10a to the drainage channel 10b through the hot water flow channel 2b of the refrigerant water heat exchanger 2.

次に、冷媒水熱交換器２を構成する温水流路２ｂを清掃する際、この温水流路２ｂから固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去し、外部に排出できるようにした構成について、第四の実施の形態として示す図４と、図５（Ａ）および図５（Ｂ）とに基づいて説明する。   Next, when cleaning the hot water flow path 2b constituting the refrigerant water heat exchanger 2, the clogging factor substances such as solid particles 11 and deposited scale not shown are removed from the hot water flow path 2b and discharged to the outside. The configuration that can be performed will be described with reference to FIG. 4 shown as the fourth embodiment, and FIGS. 5 (A) and 5 (B).

冷媒回路６における圧縮機１と冷媒水熱交換器２の冷媒流路２ａとの間に、冷媒回路６を閉止する冷媒回路閉止弁１９を設けるとともに、該冷媒回路閉止弁１９と圧縮機１との間に冷媒回収路６ａが接続され、この冷媒回収路６ａに順次冷媒回収弁１２と冷媒回収ボンベ１３とが設けられることで、該冷媒回収ボンベ１３に冷媒を回収する冷媒回収手段を構成する一方、温水回路１０における冷媒水熱交換器２と膨張タンク８との間に給水路１０ａが接続され、この給水路１０ａに給水弁１５が設けられ、給水路１０ａと温水流路２ｂとの間に加圧水路１０ｃが接続され、この加圧水路１０ｃに順次低圧側加圧弁１７と、低圧側加圧用圧縮機１８とが設けられるとともに、温水流路２ｂと水ポンプ７との間に排水路１０ｂが接続され、この排水路１０ｂに排水弁１６が設けられることで、冷媒水熱交換器２の温水流路２ｂから、固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去する除去手段を構成している。   A refrigerant circuit closing valve 19 for closing the refrigerant circuit 6 is provided between the compressor 1 in the refrigerant circuit 6 and the refrigerant flow path 2a of the refrigerant water heat exchanger 2, and the refrigerant circuit closing valve 19 and the compressor 1 The refrigerant recovery path 6a is connected to the refrigerant recovery path 6a, and the refrigerant recovery path 6a is sequentially provided with the refrigerant recovery valve 12 and the refrigerant recovery cylinder 13, thereby constituting the refrigerant recovery means for recovering the refrigerant in the refrigerant recovery cylinder 13. On the other hand, a water supply path 10a is connected between the refrigerant water heat exchanger 2 and the expansion tank 8 in the hot water circuit 10, and a water supply valve 15 is provided in the water supply path 10a, between the water supply path 10a and the hot water flow path 2b. The pressurized water channel 10 c is connected to the pressurized water channel 10 c, and a low pressure side pressurizing valve 17 and a low pressure side pressurizing compressor 18 are sequentially provided in the pressurized water channel 10 c. Connected, this drain By providing the drain valve 16 in the passage 10b, a removal means for removing the clogging substances such as the solid particles 11 and the deposited scale (not shown) from the hot water passage 2b of the refrigerant water heat exchanger 2 is configured. Yes.

これにより、冷媒回路閉止弁１９で冷媒回路６を閉止し、冷媒回収弁１２を開放して冷媒回路６から矢印のように回収した冷媒を冷媒回収ボンベ１３に貯留することによって、冷媒流路２ａを減圧する一方、温水回路１０の給水弁１５を開放するとともに、低圧側加圧弁１７を開放して低圧側加圧用圧縮機１８を起動し、図４の矢印ｃおよび矢印ｄに示すように流れる水の圧力によって、温水流路２ｂを冷媒流路２ａよりも高圧にし、排水弁１６を開放して温水流路２ｂを流通させた水を排出することによって、該温水流路２ｂを閉塞している固形分粒子１１や、析出された図示しないスケールを外部に排出する水路が形成される。   Thereby, the refrigerant circuit 6 is closed by the refrigerant circuit closing valve 19, the refrigerant recovery valve 12 is opened, and the refrigerant recovered from the refrigerant circuit 6 as indicated by the arrow is stored in the refrigerant recovery cylinder 13, whereby the refrigerant flow path 2a. 4 is opened, the water supply valve 15 of the hot water circuit 10 is opened, the low pressure side pressurization valve 17 is opened, and the low pressure side pressurization compressor 18 is started, and flows as shown by arrows c and d in FIG. The hot water flow path 2b is made higher than the refrigerant flow path 2a by the pressure of water, and the drain valve 16 is opened to discharge the water flowing through the hot water flow path 2b, thereby closing the hot water flow path 2b. A water channel for discharging the solid particles 11 and the deposited scale (not shown) to the outside is formed.

その時、減圧された冷媒流路２ａよりも温水流路２ｂが高圧になったことで、図５（Ｂ）に示す二点鎖線のように該温水流路２ｂが拡大して、その内径をなす壁面が圧力差によって冷媒流路２ａの側に湾曲するように変形している。   At that time, the hot water flow path 2b becomes higher than the decompressed refrigerant flow path 2a, so that the hot water flow path 2b expands and forms its inner diameter as shown by a two-dot chain line shown in FIG. The wall surface is deformed so as to bend toward the refrigerant flow path 2a due to the pressure difference.

また、冷媒回路閉止弁１９で冷媒回路６を閉止し、冷媒回収弁１２を開放して冷媒回路６から矢印のように回収した冷媒を冷媒回収ボンベ１３に貯留できるように構成したことで、上述した第一の実施の形態および第二の実施の形態のように、冷媒回収機１４を用いるのに較べて、簡便な冷媒回路閉止弁１９を用いることによりコスト的に有利な構成になる。   Further, the refrigerant circuit 6 is closed by the refrigerant circuit closing valve 19, the refrigerant recovery valve 12 is opened, and the refrigerant recovered from the refrigerant circuit 6 as indicated by the arrow can be stored in the refrigerant recovery cylinder 13. As in the first embodiment and the second embodiment, using a simple refrigerant circuit closing valve 19 is advantageous in terms of cost compared to using the refrigerant recovery machine 14.

これによって、とくに、温水流路２ｂ内で析出された図示しないスケールに変形や亀裂が生じることになり、温水流路２ｂを流通させた水によって生じる壁面剪断力で、該スケールを該温水流路２ｂの表面から剥離・除去できることになる。   As a result, the scale (not shown) deposited in the hot water channel 2b is particularly deformed or cracked, and the scale is removed from the scale by the wall shearing force generated by the water flowing through the hot water channel 2b. It can be peeled and removed from the surface of 2b.

その際、温水回路１０を循環する温水が温水流路２ｂを流通しながら該温水流路２ｂにスケールを析出するのに対し、この温水流路２ｂに逆向きの水を流通させることにより、スケール析出時の流れに逆行する水の流れによって生じる壁面剪断力でスケールを剥離・除去できる。   At this time, the hot water circulating in the hot water circuit 10 deposits the scale in the hot water flow channel 2b while flowing through the hot water flow channel 2b, while the water in the opposite direction is circulated in the hot water flow channel 2b. The scale can be peeled and removed by the wall shear force generated by the flow of water that runs counter to the flow during precipitation.

また、温水流路２ｂは、その内径をなす壁面が冷媒流路２ａの側に湾曲変形して内径Ｄ２から内径Ｄ３のように拡がり、図５（Ｂ）に示す固形分粒子１１は、その外径Ｄ１と温水流路２ｂの内径Ｄ３との関係が「Ｄ１＜Ｄ３」となることで、該温水流路２ｂの表面から剥離・除去された図示しないスケールと一緒になって、温水回路１０を循環する温水流と逆向きであって、給水路１０ａから冷媒水熱交換器２の温水流路２ｂを経て排水路１０ｂに向かう水流ｃにより、容易に外部に排出されるようになる。   In addition, the wall surface of the hot water flow path 2b is curved and deformed toward the refrigerant flow path 2a and expands from the inner diameter D2 to the inner diameter D3. The solid particles 11 shown in FIG. Since the relationship between the diameter D1 and the inner diameter D3 of the hot water flow path 2b is “D1 <D3”, the hot water circuit 10 is combined with a scale (not shown) peeled and removed from the surface of the hot water flow path 2b. The water flow is in the opposite direction to the circulating hot water flow, and is easily discharged to the outside by the water flow c from the water supply channel 10a to the drainage channel 10b through the hot water flow channel 2b of the refrigerant water heat exchanger 2.

以上説明したように、本発明の構成によれば、冷媒水熱交換器２を構成する温水流路２ｂから、固形分粒子１１や、析出された図示しないスケールといった詰まり要因物質を除去できるようにしたヒートポンプ式温水暖房システムとなる。   As described above, according to the configuration of the present invention, the clogging substances such as the solid particles 11 and the deposited scale (not shown) can be removed from the hot water flow path 2b constituting the refrigerant water heat exchanger 2. It becomes a heat pump type hot water heating system.

本発明によるヒートポンプ式温水暖房システムの第一の実施の形態を示す回路図である。It is a circuit diagram showing a first embodiment of a heat pump type hot water heating system according to the present invention. 本発明によるヒートポンプ式温水暖房システムの第二の実施の形態を示す回路図である。It is a circuit diagram which shows 2nd embodiment of the heat pump type hot water heating system by this invention. 本発明によるヒートポンプ式温水暖房システムの第三の実施の形態を示す回路図である。It is a circuit diagram which shows 3rd embodiment of the heat pump type hot water heating system by this invention. 本発明によるヒートポンプ式温水暖房システムの第四の実施の形態を示す回路図である。It is a circuit diagram which shows 4th Embodiment of the heat pump type hot water heating system by this invention. 本発明によるヒートポンプ式温水暖房システムの要部説明図で、（Ａ）は冷媒水熱交換器の斜視図、（Ｂ）は図５（Ａ）に示すＡ矢視図（拡大図）である。It is principal part explanatory drawing of the heat pump type hot water heating system by this invention, (A) is a perspective view of a refrigerant | coolant water heat exchanger, (B) is an A arrow directional view (enlarged view) shown to FIG. 5 (A). 従来例によるヒートポンプ式温水暖房システムの回路図である。It is a circuit diagram of the heat pump type hot water heating system by a prior art example.

符号の説明Explanation of symbols

１ 圧縮機
２ 冷媒水熱交換器
２ａ 高圧側の微細流路
２ｂ 低圧側の微細流路
３ 膨張弁
４ 送風機
５ 蒸発器
６ 冷媒回路
６ａ 冷媒回収路
７ ポンプ
８ 膨張タンク
９ 放熱器
１０ 温水回路
１０ａ 給水路
１０ｂ 排水路
１０ｃ 加圧水路
１１ 固形分粒子（浮遊物）
１２ 冷媒回収弁
１３ 冷媒回収ボンベ
１４ 冷媒回収機
１５ 給水弁
１６ 排水弁
１７ 低圧側加圧弁
１８ 低圧側加圧用圧縮機
１９ 冷媒回路閉止弁 DESCRIPTION OF SYMBOLS 1 Compressor 2 Refrigerant water heat exchanger 2a High pressure side fine flow path 2b Low pressure side fine flow path 3 Expansion valve 4 Blower 5 Evaporator 6 Refrigerant circuit 6a Refrigerant recovery path 7 Pump 8 Expansion tank 9 Radiator 10 Hot water circuit 10a Water supply channel 10b Drainage channel 10c Pressurized water channel 11 Solid matter particles (floating matter)
12 Refrigerant Recovery Valve 13 Refrigerant Recovery Cylinder 14 Refrigerant Recovery Machine 15 Water Supply Valve 16 Drainage Valve 17 Low Pressure Side Pressurization Valve 18 Low Pressure Side Pressurization Compressor 19 Refrigerant Circuit Close Valve

Claims (5)

圧縮機を有するヒートポンプ回路と、水ポンプを有する温水回路と、前記ヒートポンプ回路の冷媒と前記温水回路の温水とを熱交換する冷媒流路と温水流路とが一体的に積層された冷媒水熱交換器と、前記ヒートポンプ回路内の冷媒を回収ボンベに回収し前記温水流路を前記冷媒流路側に変形させる冷媒回収手段と、前記温水流路を詰まらせる詰まり要因物質を除去する除去手段と、を有してなることを特徴とするヒートポンプ式温水暖房システム。   Refrigerant water heat in which a heat pump circuit having a compressor, a hot water circuit having a water pump, a refrigerant flow path for exchanging heat between the refrigerant of the heat pump circuit and the hot water of the hot water circuit, and the hot water flow path are integrally laminated. An exchanger, a refrigerant recovery means for recovering the refrigerant in the heat pump circuit in a recovery cylinder and deforming the hot water flow path toward the refrigerant flow path, and a removing means for removing a clogging factor substance that clogs the hot water flow path; A heat pump type hot water heating system characterized by comprising: 前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、冷媒回収装置と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回収弁が開放されて前記冷媒回収装置で前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁および前記排水弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴とする請求項１に記載のヒートポンプ式温水暖房システム。 The refrigerant recovery means includes a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, a refrigerant recovery device, and the recovery cylinder.
The removing means has a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel and a drainage valve provided in the drainage channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant recovery valve is opened and the refrigerant is recovered in the refrigerant recovery cylinder by the refrigerant recovery device, while the water supply valve and the drain valve are opened. 2. The heat pump hot water heating system according to claim 1, wherein a water channel is formed in a direction opposite to the hot water flow of the hot water flow channel and from the water supply channel to the drainage channel through the hot water flow channel. system. 前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、冷媒回収装置と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁と、前記温水回路に接続された加圧水路と、同加圧水路に順次設けられた低圧側加圧弁および低圧側加圧用圧縮機とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回収弁が開放されて前記冷媒回収装置で前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁、前記排水弁および前記低圧側加圧弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路および前記低圧側加圧用圧縮機から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴とする請求項１に記載のヒートポンプ式温水暖房システム。 The refrigerant recovery means includes a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, a refrigerant recovery device, and the recovery cylinder.
The removal means includes a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel, a drainage valve provided in the drainage channel, and a pressurized water channel connected to the hot water circuit. And a low pressure side pressurizing valve and a low pressure side pressurizing compressor sequentially provided in the pressurized water channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant recovery valve is opened and the refrigerant is recovered in the refrigerant recovery cylinder by the refrigerant recovery device, while the water supply valve, the drain valve, and the low pressure The side pressurization valve is opened, and a water passage is formed in a direction opposite to the hot water flow of the hot water flow channel, and from the water supply channel and the low pressure side pressurizing compressor to the drainage channel through the hot water flow channel. The heat pump type hot water heating system according to claim 1. 前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回路閉止弁および冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回路閉止弁が閉じられ前記冷媒回収弁が開放されて前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁および前記排水弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴とする請求項１に記載のヒートポンプ式温水暖房システム。 The refrigerant recovery means includes a refrigerant circuit closing valve and a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, and the recovery cylinder.
The removing means has a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel and a drainage valve provided in the drainage channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant circuit closing valve is closed, the refrigerant recovery valve is opened, and the refrigerant is recovered in the refrigerant recovery cylinder, while the water supply valve and the drain valve 2. The heat pump according to claim 1, wherein a water passage is formed in a direction opposite to the hot water flow of the hot water flow path and from the water supply passage to the drainage passage through the hot water flow passage. Type hot water heating system. 前記冷媒回収手段が、前記ヒートポンプ回路に接続された冷媒回路閉止弁および冷媒回収路と、同冷媒回収路に順次設けられた冷媒回収弁と、前記回収ボンベとを有し、
前記除去手段が、前記温水回路に接続された給水路および排水路と、前記給水路に設けられた給水弁および前記排水路に設けられた排水弁と、前記温水回路に接続された加圧水路と、同加圧水路に順次設けられた低圧側加圧弁および低圧側加圧用圧縮機とを有してなり、
前記冷媒水熱交換器の温水流路を清掃する際、前記冷媒回路閉止弁が閉じられ前記冷媒回収弁が開放されて前記冷媒回収ボンベに冷媒が回収される一方、前記給水弁、前記排水弁および前記低圧側加圧弁が開放され、前記温水流路の温水流と逆向きであって、前記給水路および前記低圧側加圧用圧縮機から前記温水流路を経て前記排水路に向かう水路が形成されることを特徴とする請求項１に記載のヒートポンプ式温水暖房システム。 The refrigerant recovery means includes a refrigerant circuit closing valve and a refrigerant recovery path connected to the heat pump circuit, a refrigerant recovery valve sequentially provided in the refrigerant recovery path, and the recovery cylinder.
The removal means includes a water supply channel and a drainage channel connected to the hot water circuit, a water supply valve provided in the water supply channel, a drainage valve provided in the drainage channel, and a pressurized water channel connected to the hot water circuit. And a low pressure side pressurizing valve and a low pressure side pressurizing compressor sequentially provided in the pressurized water channel,
When cleaning the hot water flow path of the refrigerant water heat exchanger, the refrigerant circuit closing valve is closed, the refrigerant recovery valve is opened, and the refrigerant is recovered in the refrigerant recovery cylinder, while the water supply valve, the drain valve And the low-pressure side pressurizing valve is opened, and a water path is formed in a direction opposite to the hot water flow of the hot water flow path, from the water supply path and the low pressure side pressurizing compressor to the drainage path via the hot water flow path. The heat pump type hot water heating system according to claim 1, wherein
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