JP5139177B2 - Heat pump type heating device - Google Patents

Heat pump type heating device Download PDF

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JP5139177B2
JP5139177B2 JP2008175267A JP2008175267A JP5139177B2 JP 5139177 B2 JP5139177 B2 JP 5139177B2 JP 2008175267 A JP2008175267 A JP 2008175267A JP 2008175267 A JP2008175267 A JP 2008175267A JP 5139177 B2 JP5139177 B2 JP 5139177B2
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heat exchanger
pipe
hot water
pipes
refrigerant
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JP2010014352A (en
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島村　　裕二
宏和 田中
淳 本多
孝二 太田
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Sharp Corp
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Sharp Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0016—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being bent

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)

Description

本発明は，冷媒が循環されるヒートポンプサイクルを有するヒートポンプ式加熱装置などに設けられる熱交換器に関し，特に，熱交換器の構造やその製造方法に関するものである。   The present invention relates to a heat exchanger provided in a heat pump type heating device having a heat pump cycle in which a refrigerant is circulated, and more particularly to a structure of a heat exchanger and a manufacturing method thereof.

従来から，圧縮機や膨張弁，水熱交換器，室外空気熱交換器などが接続されたヒートポンプサイクルを備えてなり，そのヒートポンプサイクルに循環される冷媒との熱交換によって水を加熱するヒートポンプ式給湯機が知られている。例えば，特許文献１には，給湯及び浴槽に用いる水を冷媒との熱交換によって加熱するヒートポンプ風呂給湯機が開示されている。
ここに，図７（ａ），（ｂ）は，特許文献１の図５及び図７を引用して符号を変更した図である。
図７（ａ），（ｂ）に示すように，特許文献１に開示された水熱交換器１００では，給湯用の水が流通する給湯用配管１０１と，冷媒が循環される冷媒配管１０２と，浴槽用の水が流通する浴槽用配管１０３とが曲成されて積層されている。水熱交換器１００では，冷媒配管１０２に循環される冷媒との熱交換によって給湯用配管１０１及び浴槽用配管１０３に流れる水を加熱することができる。 Conventionally, it has a heat pump cycle connected to a compressor, expansion valve, water heat exchanger, outdoor air heat exchanger, etc., and heat pump type that heats water by heat exchange with the refrigerant circulating in the heat pump cycle A water heater is known. For example, Patent Document 1 discloses a heat pump bath water heater that heats water used for hot water supply and a bathtub by heat exchange with a refrigerant.
Here, FIGS. 7A and 7B are diagrams in which the reference numerals are changed with reference to FIGS. 5 and 7 of Patent Document 1. FIG.
As shown in FIGS. 7A and 7B, in the water heat exchanger 100 disclosed in Patent Document 1, a hot water supply pipe 101 through which hot water is circulated, a refrigerant pipe 102 through which a refrigerant is circulated, and The bathtub pipe 103 through which the water for the bathtub circulates is laminated. In the water heat exchanger 100, the water flowing through the hot water supply pipe 101 and the bathtub pipe 103 can be heated by heat exchange with the refrigerant circulated through the refrigerant pipe 102.

ここで，例えば水熱交換器１００は，給湯用配管１０１，冷媒配管１０２及び床暖房用配管１０３各々を個別に螺旋状に曲成した後，その３つの配管を重ね合わせることで製造することが可能である。
また，水熱交換器１００では，図７（ｂ）に示されているように，給湯用配管１０１，冷媒配管１０２及び床暖房用配管１０３の全ての管径は同じであるため，その３つの配管を重ね合わせた状態で同時に曲成することも考えられる。この方法によれば，複数の配管を個別に曲成する工程とそれらを重ね合わせる工程とを順に実行する必要がないため，容易に熱交換器を製造することができ，生産性が高まる。
特開２００３−６５６０２号公報 Here, for example, the water heat exchanger 100 can be manufactured by individually bending a hot water supply pipe 101, a refrigerant pipe 102, and a floor heating pipe 103 into a spiral shape, and then superimposing the three pipes. Is possible.
Further, in the water heat exchanger 100, as shown in FIG. 7B, all the pipe diameters of the hot water supply pipe 101, the refrigerant pipe 102, and the floor heating pipe 103 are the same. It can be considered that the pipes are bent at the same time. According to this method, since it is not necessary to sequentially perform a process of bending a plurality of pipes individually and a process of superimposing them, a heat exchanger can be easily manufactured, and productivity is increased.
JP 2003-65602 A

しかしながら，水熱交換器１００において床暖房用配管１０３に流れる水量を給湯用配管１０１に流れる水量よりも多くするために，床暖房用配管１０３の管径を給湯用配管１０１の管径よりも大きくする場合など，水熱交換器１００に設けられる配管の外径を異ならせる場合には，その外径の異なる複数の配管をその中心が直線状に揃うように曲成して積層することが難しくなる。例えば，外径の異なる複数の配管の中心位置が一致する状態に位置決めしつつ曲成することのできる特殊な製造設備が必要となる。
従って，本発明は上記事情に鑑みてなされたものであり，その目的とするところは，少なくとも一つの配管の外径が異なる複数の配管が曲成されて積層される熱交換器であってその製造が容易である熱交換器を備えたヒートポンプ式加熱装置を提供することにある。 However, in order to make the amount of water flowing through the floor heating pipe 103 larger than the amount of water flowing through the hot water supply pipe 101 in the water heat exchanger 100, the pipe diameter of the floor heating pipe 103 is larger than the pipe diameter of the hot water supply pipe 101. When the outer diameters of the pipes provided in the water heat exchanger 100 are made different, for example, it is difficult to bend and stack a plurality of pipes having different outer diameters so that their centers are aligned in a straight line. Become. For example, special manufacturing equipment that can be bent while being positioned so that the center positions of a plurality of pipes having different outer diameters coincide with each other is required.
Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is a heat exchanger in which a plurality of pipes having different outer diameters are bent and stacked. An object of the present invention is to provide a heat pump type heating device including a heat exchanger that is easy to manufacture.

上記目的を達成するために本発明は，少なくとも一つの配管の外径が異なる３以上の配管が繰り返し曲成されて積層されることにより該配管各々が順に接触して熱的に結合された熱交換器と，冷媒が循環されるヒートポンプサイクルとを備えてなるヒートポンプ式加熱装置であって，前記熱交換器は，前記３以上の配管の全てが積層方向に沿って揃うように曲成され，積層される前記３以上の配管の全てを結ぶ共通外接線が当該熱交換器の外周面に沿った線分であり，前記３以上の配管が，平面視で略矩形状，略扁平形状，略円形状，略楕円形状のいずれかに曲成されてなることを特徴とするヒートポンプ式加熱装置として構成される。 In order to achieve the above-described object, the present invention provides a heat which is formed by repeatedly bending and laminating three or more pipes having different outer diameters of at least one pipe so that the pipes are in contact with each other and thermally coupled. A heat pump type heating device comprising an exchanger and a heat pump cycle in which a refrigerant is circulated, wherein the heat exchanger is bent so that all of the three or more pipes are aligned in the stacking direction, A common circumscribing line connecting all of the three or more pipes to be stacked is a line segment along the outer peripheral surface of the heat exchanger, and the three or more pipes are substantially rectangular, substantially flat, The heat pump type heating device is formed into a circular shape or a substantially elliptic shape .

前記ヒートポンプ式加熱装置では，前記３以上の配管のうちで最も外径の大きい配管を除く他の配管について，その管路をできるだけ長く確保することができる。例えば，前記他の配管が冷媒が循環される配管である場合に，その冷媒の管路長を長く確保することで高い熱交換性能を確保することができる。 Prior Symbol heat pump type heating apparatus, the other pipe except for large pipe of the most outer diameter of the at least three pipes can be secured as long as possible the conduit. For example, when the other pipe is a pipe through which the refrigerant is circulated, high heat exchange performance can be ensured by ensuring a long pipe length of the refrigerant.

本発明によれば，外径の異なる３以上の配管を外側に揃えて曲成して積層すればよいため，その製造を容易に行うことができる。例えば，前記３以上の配管を平坦な部材に押さえつけた状態でその部材と逆方向に折り曲げれば，その３以上の配管を外側に揃えて曲成することができる。しかも，外側を揃える場合には，外径の大きい配管断面の仮想外接矩形領域に，外径の小さい配管の一部が干渉することになるため，中心位置を合わせて曲成する場合に比べて，当該熱交換器の高さを縮めることができる。また，前記熱交換器では，外周面が略平坦面となるため見栄えもよい。 According to the present invention, since the different three or more pipe outer diameters may be stacked to form tracks aligned outside side, it is possible to perform the production easily. For example, if Orimagere pre Symbol 3 or more pipes to the member and the opposite direction while pressed against the planar member may be the bent aligning the three or more pipes to the outside. Moreover, when aligning the outer side, the virtual circumscribed rectangular area of a large pipe cross-section of the outer diameter, since a part of the pipe outside diameters smaller will interfere, compared to the case where the bent and centered position Thus, the height of the heat exchanger can be reduced. Further, the heat exchanger has a good appearance because the outer peripheral surface is a substantially flat surface.

以下添付図面を参照しながら，本発明の実施の形態について説明し，本発明の理解に供する。尚，以下の実施の形態は，本発明を具体化した一例であって，本発明の技術的範囲を限定する性格のものではない。
ここに，図１は本発明の実施の形態に係るヒートポンプ式給湯暖房機Ｘの概略構成を示すブロック図，図２は本発明の実施の形態に係る水熱交換器１４の外観を示す要部模式図，図３は本発明の実施の形態に係る水熱交換器１４の断面を示す要部模式図である。
まず，図１を用いて，本発明の実施の形態に係るヒートポンプ式給湯暖房機Ｘの概略構成について説明する。
図１に示すように，ヒートポンプ式給湯暖房機Ｘ（ヒートポンプ式加熱装置の一例）は，大別すると，冷媒が循環されるヒートポンプサイクル（冷凍サイクル）１と，後述の床暖房装置２１に温水を循環させるための床暖房回路２と，温水を貯留又は給湯するための給湯回路３とを備えて構成されている。ここに，ヒートポンプサイクル１に循環される冷媒には，例えばＣＯ2冷媒などの炭酸ガス冷媒（自然冷媒の一種）や，Ｒ４１０ＡなどのＨＦＣ冷媒が用いられる。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of a heat pump type hot water heater / heater X according to an embodiment of the present invention, and FIG. 2 is a main part showing an appearance of a water heat exchanger 14 according to the embodiment of the present invention. A schematic diagram and FIG. 3 are principal part schematic diagrams which show the cross section of the water heat exchanger 14 which concerns on embodiment of this invention.
First, the schematic configuration of the heat pump hot water supply / room heater X according to the embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the heat pump type hot water heater / heater X (an example of a heat pump type heating device) can be roughly divided into a heat pump cycle (refrigeration cycle) 1 in which refrigerant is circulated and a floor heating device 21 (to be described later). A floor heating circuit 2 for circulation and a hot water supply circuit 3 for storing or supplying hot water are provided. Here, as the refrigerant circulated in the heat pump cycle 1, for example, a carbon dioxide refrigerant such as CO 2 refrigerant (a kind of natural refrigerant) or an HFC refrigerant such as R410A is used.

ヒートポンプサイクル１は，冷媒を圧縮する圧縮機１１と，圧縮機１１から流出した冷媒と水との間で熱交換を行う水熱交換器１４（本発明に係る熱交換器の一例）と，水熱交換器１４から流出した冷媒を状態変化させる膨張弁１３と，冷媒と室外空気との間で熱交換を行う室外空気熱交換器１２とを備えている。なお，膨張弁１３は，冷媒を状態変化させる膨張機構の一例に過ぎず，キャピラリーチューブなどの他の膨張機構を採用してもよい。
床暖房回路２は，水熱交換器１４において冷媒との熱交換によって加熱された後の温水を床下の床暖房パネル等に循環させることで床暖房を実現する床暖房装置２１と，水熱交換器１４及び床暖房装置２１の間に水を循環させるための循環ポンプ２２とを備えている。床暖房回路２では，水に代えてブライン（不凍液）を用いる場合も考えられる。
給湯回路３は，水熱交換器１４において冷媒との熱交換によって加熱された後の温水（例えば４５〜９０℃程度）を貯留するための貯湯タンク３１と，貯湯タンク３１の下層から水熱交換器１４を経て貯湯タンク３１の上層に水を循環させるための循環ポンプ３２と，給水口３３からの水と貯湯タンク３１の上層から供給される湯とを混合して給湯口３４から給湯する温水の温度を調節するための電磁三方弁３５とを備えている。
ヒートポンプ式給湯暖房機Ｘでは，不図示の制御装置によって，各回路において図示する矢印方向に冷媒又は水が循環されることにより給湯運転や床暖房運転が実行されるが，これらの基本動作については従来と異なるところがないため，ここではその詳説を省略する。
本発明の実施の形態に係るヒートポンプ式給湯暖房機Ｘは，水熱交換器１４の構造に特徴を有しており，以下，図２及び図３を用いてこの点について説明する。 The heat pump cycle 1 includes a compressor 11 that compresses a refrigerant, a water heat exchanger 14 that performs heat exchange between the refrigerant that flows out of the compressor 11 and water (an example of a heat exchanger according to the present invention), water, An expansion valve 13 that changes the state of the refrigerant flowing out of the heat exchanger 14 and an outdoor air heat exchanger 12 that performs heat exchange between the refrigerant and the outdoor air are provided. The expansion valve 13 is merely an example of an expansion mechanism that changes the state of the refrigerant, and another expansion mechanism such as a capillary tube may be employed.
The floor heating circuit 2 includes a floor heating device 21 that realizes floor heating by circulating hot water heated by heat exchange with the refrigerant in the water heat exchanger 14 to a floor heating panel or the like under the floor, and a water heat exchange. And a circulation pump 22 for circulating water between the heater 14 and the floor heating device 21. In the floor heating circuit 2, it may be considered that brine (antifreeze) is used instead of water.
The hot water supply circuit 3 includes a hot water storage tank 31 for storing hot water (for example, about 45 to 90 ° C.) heated by heat exchange with the refrigerant in the water heat exchanger 14, and water heat exchange from the lower layer of the hot water storage tank 31. Hot water for supplying hot water from the hot water supply port 34 by mixing the circulation pump 32 for circulating water to the upper layer of the hot water storage tank 31 through the vessel 14, the water from the water supply port 33 and the hot water supplied from the upper layer of the hot water storage tank 31. And an electromagnetic three-way valve 35 for adjusting the temperature of the.
In the heat pump hot water heater / heater X, a hot water supply operation or a floor heating operation is performed by circulating a refrigerant or water in the direction of the arrow shown in each circuit by a control device (not shown). Since there is no difference from the conventional one, the detailed explanation is omitted here.
The heat pump hot water supply / room heater X according to the embodiment of the present invention is characterized by the structure of the water heat exchanger 14, and this point will be described below with reference to FIGS.

図２に示すように，本発明の実施の形態に係る水熱交換器１４は，ヒートポンプサイクル１に循環される冷媒が流通する冷媒配管４１と，床暖房回路２に循環される水が流通する床暖房用配管４２と，給湯回路３の水が流通する給湯用配管４３とを有しており，これらの配管が略螺旋状を描くように繰り返し曲成されて積層されることにより形成されている。
冷媒配管４１，床暖房用配管４２，給湯用配管４３各々は，ヒートポンプサイクル１，床暖房回路２，給湯回路３各々の回路上に接続されたものであって該回路の一部を形成している。
ここに，図２は水熱交換器１４の略半分の形状の斜視図であるが，該水熱交換器１４の残り略半分も同様の形状を有している。従って，水熱交換器１４は，平面視する（上面から見る）と直線部分及び曲線部分からなる略偏平形状（例えば，陸上競技場のトラックのような形状）を成している。もちろん，水熱交換器１４は，平面視で略矩形状，略楕円形状，略円形状などに形成されていてもよい。 As shown in FIG. 2, in the water heat exchanger 14 according to the embodiment of the present invention, the refrigerant pipe 41 through which the refrigerant circulated in the heat pump cycle 1 circulates and the water circulated through the floor heating circuit 2 circulates. It has a floor heating pipe 42 and a hot water supply pipe 43 through which water of the hot water supply circuit 3 flows, and these pipes are formed by being repeatedly bent and stacked so as to draw a substantially spiral shape. Yes.
Each of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 is connected to the heat pump cycle 1, the floor heating circuit 2, and the hot water supply circuit 3 and forms a part of the circuit. Yes.
Here, FIG. 2 is a perspective view of a substantially half shape of the water heat exchanger 14, but the remaining half of the water heat exchanger 14 has the same shape. Accordingly, when viewed in plan (viewed from the top), the water heat exchanger 14 has a substantially flat shape (for example, a shape like a track in an athletics stadium) composed of a straight portion and a curved portion. Of course, the water heat exchanger 14 may be formed in a substantially rectangular shape, a substantially elliptical shape, a substantially circular shape or the like in plan view.

水熱交換器１４では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３が繰り返し曲成されて積層され，該配管各々が順に接触した状態でろう付されることによって熱的に結合されている。
詳しくは，冷媒配管４１，床暖房用配管４２，給湯用配管４３，冷媒配管４１，床暖房用配管４２，給湯用配管４３，…という順に連続して接触しており，隣り合う冷媒配管４１と床暖房用配管４２，床暖房用配管４２と給湯配管４３，給湯配管４３と冷媒配管４１の各々が，ろう付によって熱的に結合されている。ここに，ろう付には，銀ろう，銅ろう，黄銅ろう，りん銅ろうなどのろう材が用いられる。また，ろう付に限られず，例えば溶接や半田付け，熱伝導性の高い接着剤などによって熱的に結合することも他の実施例として考えられる。 In the water heat exchanger 14, the refrigerant pipe 41, the floor heating pipe 42 and the hot water supply pipe 43 are repeatedly bent and laminated, and are thermally coupled by brazing the pipes in contact with each other in order. ing.
Specifically, the refrigerant pipe 41, the floor heating pipe 42, the hot water supply pipe 43, the refrigerant pipe 41, the floor heating pipe 42, the hot water supply pipe 43,... The floor heating pipe 42, the floor heating pipe 42 and the hot water supply pipe 43, and the hot water supply pipe 43 and the refrigerant pipe 41 are thermally coupled by brazing. Here, brazing materials such as silver brazing, copper brazing, brass brazing and phosphor copper brazing are used for brazing. In addition, the present invention is not limited to brazing, and it is also conceivable as another embodiment that, for example, thermal bonding is performed by welding, soldering, an adhesive having high thermal conductivity, or the like.

ここで，ヒートポンプ式給湯暖房機Ｘでは，給湯回路３よりも床暖房回路２でより多くの温水を利用するため，熱交換器１４の床暖房用配管４２の管径が冷媒配管４１や給湯用配管４３よりも大きく設計されている。なお，さらに冷媒配管４１と給湯用配管４３との管径が異なる構成であってもよい。
この場合，熱交換器１４には，少なくとも一つの配管の外径が異なる複数の配管が存在することになる。このように構成された水熱交換器１４では，その複数の配管を曲成して積層する際に，その複数の配管をその中心が直線状に揃うように同時に曲成することが難しくなる。例えば，外径の異なる複数の配管の中心位置が一致する状態に位置決めしつつ曲成することのできる特殊な製造設備が必要となる。
そこで，本発明の実施の形態に係る水熱交換器１４では，外径が異なる複数の配管を同時に曲成することが容易な構造を採用することにより，その製造方法を容易にして生産性を高めている。 Here, in the heat pump hot water heater / heater X, since the floor heating circuit 2 uses more hot water than the hot water supply circuit 3, the diameter of the floor heating pipe 42 of the heat exchanger 14 is set to the refrigerant pipe 41 or the hot water supply. It is designed to be larger than the pipe 43. Further, the refrigerant pipe 41 and the hot water supply pipe 43 may have different pipe diameters.
In this case, the heat exchanger 14 includes a plurality of pipes having different outer diameters of at least one pipe. In the water heat exchanger 14 configured as described above, when the plurality of pipes are bent and stacked, it is difficult to simultaneously curve the plurality of pipes so that the centers thereof are aligned in a straight line. For example, special manufacturing equipment that can be bent while being positioned so that the center positions of a plurality of pipes having different outer diameters coincide with each other is required.
Therefore, the water heat exchanger 14 according to the embodiment of the present invention employs a structure in which a plurality of pipes having different outer diameters can be bent at the same time, thereby simplifying the manufacturing method and increasing productivity. It is increasing.

ここに，図３は水熱交換器１４の断面を示す要部模式図であって，（ａ）は斜視図，（ｂ）は断面を示している。
図３に示す線分Ｐは，水熱交換器１４の外周面に沿った線分であって，水熱交換器１４の冷媒配管４１，床暖房用配管４２及び給湯用配管４３の全てを結ぶ二つの共通外接線の一方である外側の共通外接線である。
このように，水熱交換器１４では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３が，水熱交換器１４の外周面に揃うように曲成されて積層されている。そのため，最も外径の大きい床暖房用配管４２の仮想外接矩形領域に冷媒配管４１や給湯用配管４３が干渉することになり，これらの配管を中心位置を合わせて配置する場合に比べて，水熱交換器１４の高さ寸法を縮めることができるので水熱交換器１４をコンパクト化できる。また，図２に示すように，水熱交換器１４の外周面が略平坦状となり見栄えもよい。
さらに，水熱交換器１４では，冷媒配管４１を床暖房用配管４２の外側に合わせて配置することによって，床暖房用配管４２の中心に合わせて配置する場合や床暖房用配管４２の内側に合わせて配置する場合に比べて該冷媒配管４１の管路をできるだけ長く確保することができ，該水熱交換器１４において高い熱交換性能を発揮させることができる。
そして，水熱交換器１４では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の外側を揃えるだけでよいため，中心位置を揃える場合に比べて製造を容易に行うことができる。以下，前述の水熱交換器１４の製造方法の一例について説明する。 Here, FIG. 3 is a schematic view of a main part showing a cross section of the water heat exchanger 14, wherein (a) is a perspective view and (b) is a cross section.
A line segment P shown in FIG. 3 is a line segment along the outer peripheral surface of the water heat exchanger 14, and connects all of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 of the water heat exchanger 14. An outer common circumscribing line that is one of two common circumscribing lines.
As described above, in the water heat exchanger 14, the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are bent and laminated so as to be aligned with the outer peripheral surface of the water heat exchanger 14. For this reason, the refrigerant pipe 41 and the hot water supply pipe 43 interfere with the virtual circumscribed rectangular region of the floor heating pipe 42 having the largest outer diameter. Since the height dimension of the heat exchanger 14 can be reduced, the water heat exchanger 14 can be made compact. Moreover, as shown in FIG. 2, the outer peripheral surface of the water heat exchanger 14 is substantially flat and looks good.
Further, in the water heat exchanger 14, the refrigerant pipe 41 is arranged along the outside of the floor heating pipe 42, so that the refrigerant pipe 41 is arranged along the center of the floor heating pipe 42 or inside the floor heating pipe 42. Compared with the case where they are arranged together, the pipe line of the refrigerant pipe 41 can be ensured as long as possible, and the water heat exchanger 14 can exhibit high heat exchange performance.
In the water heat exchanger 14, it is only necessary to align the outside of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, and therefore, the manufacture can be easily performed as compared with the case where the center positions are aligned. Hereinafter, an example of the manufacturing method of the above-mentioned water heat exchanger 14 will be described.

水熱交換器１４を製造する場合には，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の全てを結ぶ共通外接線の一方である線分Ｐ（図３参照）が当該水熱交換器１４の外周面に沿うように該配管各々を同時に位置決めすることができる位置決め部材を用いる。このとき，前記位置決め部材は，冷媒配管４１，床暖房用配管４２及び給湯用配管４３ごとの外径に対応した凹凸を有するものでなく，単なる平坦状の部材などの簡単な位置決め部材であってよい。
そして，前記位置決め部材を用いて，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の外側の共通外接線である線分Ｐを，当該水熱交換器１４の外周面となる面に沿わせた状態で，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を同時に機械的に加圧することで内側に曲成する曲成工程を繰り返し実行する。
これにより，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の全てを結ぶ共通外接線である線分Ｐが，当該水熱交換器１４の外周面に沿った線分となるように積層された水熱交換器１４が製造される。なお，前述したように，曲成して積層された水熱交換器１４は，その後，冷媒配管４１，床暖房用配管４２及び給湯用配管４３各々がろう付されることで完成する。 When the water heat exchanger 14 is manufactured, a line segment P (see FIG. 3), which is one of common external tangent lines connecting all of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, is the water heat exchange. A positioning member capable of simultaneously positioning the pipes along the outer peripheral surface of the vessel 14 is used. At this time, the positioning member does not have irregularities corresponding to the outer diameters of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, but is a simple positioning member such as a flat member. Good.
Then, using the positioning member, a line segment P, which is a common outer tangent line outside the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, is aligned with the outer peripheral surface of the water heat exchanger 14. In this state, the bending process of bending the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 at the same time by mechanically pressurizing them is repeatedly executed.
Thus, the line segment P, which is a common outer tangent line connecting all of the refrigerant pipe 41, the floor heating pipe 42 and the hot water supply pipe 43, is laminated so as to be a line segment along the outer peripheral surface of the water heat exchanger 14. The produced water heat exchanger 14 is manufactured. As described above, the bent and stacked water heat exchanger 14 is completed by brazing the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, respectively.

このように，本実施の形態に係る水熱交換器１４は，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を外側に揃えるだけでよいため，特殊な位置決め部材を必要とせず，簡単な位置決め部材を用いて冷媒配管４１，床暖房用配管４２及び給湯用配管４３を同時に曲成することで容易に製造することができ，高い生産性を実現することができる。もちろん，熱交換器１４は，位置決め部材として平坦な部材に限られず，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を位置決めするための溝状部を有する部材などを用いて製造してもかまわない。
なお，本実施の形態及び後述の実施例１では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の３つの配管を有する構成について説明するが，本発明は，外径が異なる少なくとも２以上（複数の）配管を有する熱交換器に適用可能である。 As described above, the water heat exchanger 14 according to the present embodiment only requires the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 to be arranged on the outside. The refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 can be easily bent by using a simple positioning member, and high productivity can be realized. Of course, the heat exchanger 14 is not limited to a flat member as a positioning member, and is manufactured using a member having a groove portion for positioning the refrigerant pipe 41, the floor heating pipe 42 and the hot water supply pipe 43. It doesn't matter.
In the present embodiment and Example 1 described later, a configuration having three pipes, that is, a refrigerant pipe 41, a floor heating pipe 42, and a hot water supply pipe 43 will be described. However, the present invention has at least two different outer diameters. The present invention can be applied to a heat exchanger having the above (plural) pipes.

ここに，図４は本発明の実施例１に係る水熱交換器１４１の外観を示す要部模式図，図５は本発明の実施例１に係る水熱交換器１４１の断面を示す要部模式図である。なお，前記実施の形態で説明した水熱交換器１４と同様の構成については同じ符号を付してその説明を省略する。
本実施例１では，図４に示すように，冷媒配管４１，床暖房用配管４２及び給湯用配管４３が，その内側が揃うように曲成された水熱交換器１４１について説明する。前記実施の形態で説明した水熱交換器１４では，内周面に凹凸が形成されていたのに対し，本実施例１に係る水熱交換器１４１では，外周面に凹凸が形成されている。 FIG. 4 is a schematic diagram of the main part showing the appearance of the water heat exchanger 141 according to the first embodiment of the present invention, and FIG. 5 is a main part showing a cross section of the water heat exchanger 141 according to the first embodiment of the present invention. It is a schematic diagram. In addition, about the structure similar to the water heat exchanger 14 demonstrated in the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
In the first embodiment, as shown in FIG. 4, the water heat exchanger 141 in which the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are bent so that the inside thereof is aligned will be described. In the water heat exchanger 14 described in the above embodiment, irregularities are formed on the inner peripheral surface, whereas in the water heat exchanger 141 according to the first embodiment, irregularities are formed on the outer peripheral surface. .

ここに，図５は水熱交換器１４１の断面を示す要部模式図であって，（ａ）は斜視図，（ｂ）は断面を示している。
図５に示す線分Ｑは，水熱交換器１４１の内周面に沿った線分であって，水熱交換器１４１の冷媒配管４１，床暖房用配管４２及び給湯用配管４３の全てを結ぶ二つの共通外接線の一方である内側の共通外接線である。
このように，水熱交換器１４１は，冷媒配管４１，床暖房用配管４２及び給湯用配管４３が，水熱交換器１４１の内周面に揃うように繰り返し曲成されて積層されることにより略螺旋状に形成されている。そのため，最も外径の大きい床暖房用配管４２の仮想外接矩形領域に冷媒配管４１や給湯用配管４３が干渉することになり，これらの配管を中心位置を合わせて配置する場合に比べて，水熱交換器１４１の高さ寸法を縮めることができるので水熱交換器１４をコンパクト化できる。また，図４に示すように，水熱交換器１４１の内周面が略平坦状となり見栄えもよい。
そして，水熱交換器１４１では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の内側を揃えるだけでよいため，中心位置を揃える場合に比べて製造を容易に行うことができる。以下，前述の水熱交換器１４１の製造方法について説明する。 Here, FIG. 5 is a schematic view of a main part showing a cross section of the water heat exchanger 141, where (a) is a perspective view and (b) is a cross section.
A line segment Q shown in FIG. 5 is a line segment along the inner peripheral surface of the water heat exchanger 141, and all of the refrigerant pipe 41, the floor heating pipe 42 and the hot water supply pipe 43 of the water heat exchanger 141 are connected. It is an inner common outer tangent which is one of two common outer tangents to be connected.
Thus, the water heat exchanger 141 is formed by repeatedly bending the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 so as to be aligned with the inner peripheral surface of the water heat exchanger 141. It is formed in a substantially spiral shape. For this reason, the refrigerant pipe 41 and the hot water supply pipe 43 interfere with the virtual circumscribed rectangular region of the floor heating pipe 42 having the largest outer diameter. Since the height dimension of the heat exchanger 141 can be reduced, the water heat exchanger 14 can be made compact. Moreover, as shown in FIG. 4, the inner peripheral surface of the water heat exchanger 141 may be substantially flat and look good.
In the water heat exchanger 141, it is only necessary to align the inside of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, so that the manufacture can be easily performed as compared with the case where the center positions are aligned. Hereinafter, the manufacturing method of the above-mentioned water heat exchanger 141 is demonstrated.

水熱交換器１４１を製造する場合には，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の全てを結ぶ共通外接線の一方である線分Ｑ（図５参照）が当該水熱交換器１４１の内周面に沿うように該配管各々を同時に位置決めすることができる位置決め部材を用いる。このとき，前記位置決め部材は，冷媒配管４１，床暖房用配管４２及び給湯用配管４３ごとの外径に対応した凹凸を有するものでなく，単なる平坦状の部材などの簡単な位置決め部材であってよい。
そして，前記位置決め部材を用いて，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の内側の共通外接線である線分Ｑを，当該水熱交換器１４１の内周面となる面に沿わせた状態で，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を同時に機械的に加圧することで内側に曲成する曲成工程を繰り返し実行する。このとき冷媒配管４１，床暖房用配管４２及び給湯用配管４３は，前記位置決め部材の端部を支点にすることで容易に内側に折り曲げることができる。
これにより，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の全てを結ぶ共通外接線である線分Ｑが，当該水熱交換器１４１の内周面に沿った線分となるように積層された水熱交換器１４１が製造される。なお，前述したように，曲成して積層された水熱交換器１４は，その後，冷媒配管４１，床暖房用配管４２及び給湯用配管４３各々がろう付されることで完成する。 When the water heat exchanger 141 is manufactured, the line segment Q (see FIG. 5), which is one of the common outer tangent lines connecting all of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, is the water heat exchange. A positioning member capable of simultaneously positioning the pipes along the inner peripheral surface of the vessel 141 is used. At this time, the positioning member does not have irregularities corresponding to the outer diameters of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, but is a simple positioning member such as a flat member. Good.
Then, by using the positioning member, a line segment Q that is a common external tangent line inside the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 is formed on the surface that becomes the inner peripheral surface of the water heat exchanger 141. In the state of being along, the refrigerant pipe 41, the floor heating pipe 42 and the hot water supply pipe 43 are mechanically pressurized at the same time to repeatedly perform the bending process of bending inward. At this time, the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 can be easily bent inward by using the end of the positioning member as a fulcrum.
Thereby, the line segment Q which is a common outer tangent line connecting all of the refrigerant pipe 41, the floor heating pipe 42 and the hot water supply pipe 43 becomes a line segment along the inner peripheral surface of the water heat exchanger 141. The laminated water heat exchanger 141 is manufactured. As described above, the bent and stacked water heat exchanger 14 is completed by brazing the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, respectively.

このように，本実施例１に係る水熱交換器１４１は，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を内側に揃えるだけでよいため，前述の水熱交換器１４と同様に，簡単な位置決め部材を用いて冷媒配管４１，床暖房用配管４２及び給湯用配管４３を同時に曲成することで容易に製造することができ，高い生産性を実現することができる。もちろん，熱交換器１４１は，位置決め部材として平坦な部材に限られず，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を位置決めするための溝状部を有する部材などを用いて製造してもかまわない。
また，水熱交換器１４１は，冷媒配管４１，床暖房用配管４２及び給湯用配管４３の内側を揃える構造であるため，外側に揃える前述の水熱交換器１４に比べてより簡単に製造することが可能である。例えば，水熱交換器１４１の内部に形成される空間の形状，即ち横断面が略扁平形状であって水熱交換器１４１と同様の高さを有する巻付用部材を用意しておき，その巻付用部材の外周に沿って冷媒配管４１，床暖房用配管４２及び給湯用配管４３を巻き付けていき，巻き付け終了後にその部材を上方に引き抜く。これにより，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を，その全てを結ぶ共通外接線Ｑが内周面に沿う水熱交換器１４１を製造することができる。なお，ろう付されない材質で前記巻付用部材を形成しておけば，該巻付用部材に冷媒配管４１，床暖房用配管４２及び給湯用配管４３を巻き付けたまま，これらをろう付し，その後で前記巻付用部材を取り外してもよい。 As described above, the water heat exchanger 141 according to the first embodiment only has to arrange the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 on the inside, and thus, similarly to the above-described water heat exchanger 14. The refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 can be easily bent at the same time using a simple positioning member, and high productivity can be realized. Of course, the heat exchanger 141 is not limited to a flat member as a positioning member, and is manufactured using a member having a groove portion for positioning the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43, and the like. It doesn't matter.
Moreover, since the water heat exchanger 141 has a structure in which the inside of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are aligned, the water heat exchanger 141 is manufactured more easily than the above-described water heat exchanger 14 aligned outside. It is possible. For example, a winding member having a shape of a space formed inside the water heat exchanger 141, that is, a substantially flat cross section and the same height as the water heat exchanger 141, is prepared, The refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are wound along the outer periphery of the winding member, and the member is pulled upward after the winding is completed. As a result, the water heat exchanger 141 can be manufactured in which the common outer tangent line Q connecting the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 all along the inner peripheral surface. If the winding member is formed of a material that is not brazed, the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are wound around the winding member while brazing them, Thereafter, the winding member may be removed.

なお，前記実施の形態や前記実施例１で説明したように冷媒配管４１，床暖房用配管４２及び給湯用配管４３をその外側や内側に揃えて配置しない場合には，該冷媒配管４１，床暖房用配管４２及び給湯用配管４３の中心位置を揃えて配置することが考えられる。本実施例２では，図６を用いて係る構成について説明しておく。ここに，図６は，実施例２に係る水熱交換器１４２の断面を示す要部模式図であって，（ａ）は斜視図，（ｂ）は断面図である。
図６に示すように，本実施例２に係る水熱交換器１４２では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３が，それらの中心を通る線分Ｒが直線状となるように曲成されて積層されている。このように構成された水熱交換器１４２は，冷媒配管４１における床暖房用配管４２及び給湯用配管４３各々との接触点が最も離間しており，冷媒配管４１及び床暖房用配管４２の熱交換と，冷媒配管４１及び給湯用配管４３の熱交換との相互間の影響が最も小さい。また，水熱交換器１４２では，冷媒配管４１，床暖房用配管４２及び給湯用配管４３各々の長さを同じにすることができる。
但し，このように構成される水熱交換器１４２は，前記実施の形態及び前記実施例１で説明したように，冷媒配管４１，床暖房用配管４２及び給湯用配管４３を同時に曲成する場合には，平坦状の部材を用いて形成することができない。
そのため，水熱交換器１４２を製造する場合には，冷媒配管４１，床暖房用配管４２及び給湯用配管４３各々を，これらの中心位置が直線状となるように位置決めするべく，該配管各々の外径に対応して形成された凹凸状の溝部を有する位置決め部材を用いる。この位置決め部材を用いれば，配管各々の中心位置が直線状となるように位置決めした状態で該配管各々を同時に機械的に加圧して曲成することができる。このような製造方法によれば，冷媒配管４１，床暖房用配管４２及び給湯用配管４３各々を個別に曲成した後でそれらを組み合わせる場合に比べて容易に製造することが可能となる。
（付記）
上記の記載に関しては、以下のように付記することができる。
［発明が解決しようとする課題］
［０００４］
しかしながら，水熱交換器１００において床暖房用配管１０３に流れる水量を給湯用配管１０１に流れる水量よりも多くするために，床暖房用配管１０３の管径を給湯用配管１０１の管径よりも大きくする場合など，水熱交換器１００に設けられる配管の外径を異ならせる場合には，その外径の異なる複数の配管をその中心が直線状に揃うように曲成して積層することが難しくなる。例えば，外径の異なる複数の配管の中心位置が一致する状態に位置決めしつつ曲成することのできる特殊な製造設備が必要となる。
従って，本発明は上記事情に鑑みてなされたものであり，その目的とするところは，少なくとも一つの配管の外径が異なる複数の配管が曲成されて積層される熱交換器であってその製造が容易である熱交換器を提供することにある。
［課題を解決するための手段］
［０００５］
上記目的を達成するために本発明は，少なくとも一つの配管の外径が異なる複数の配管が繰り返し曲成されて積層されることにより該配管各々が順に接触して熱的に結合された熱交換器に適用されるものであって，積層される前記複数の配管の全てを結ぶ二つの共通外接線の一方が当該熱交換器の外周面或いは内周面に沿った線分であることを特徴とする熱交換器として構成される。具体的に，前記複数の配管は，平面視で略矩形状，略扁平形状，略円形状，略楕円形状のいずれかに曲成されてなることが考えられる。
本発明に係る熱交換器は，外径の異なる複数の配管を外側或いは内側に揃えて曲成して積層すればよいため，その製造を容易に行うことができる。例えば，前記複数の配管を平坦な部材を支点に内側に折り曲げれば，その複数の配管を内側に揃えて曲成することができる。また，前記複数の配管を平坦な部材に押さえつけた状態でその部材と逆方向に折り曲げれば，その複数の配管を外側に揃えて曲成することができる。しかも，外側又は内側のいずれか一方を揃える場合には，外径の大きい配管断面の仮想外接矩形領域に，外径の小さい配管の一部が干渉することになるため，中心位置を合わせて曲成する場合に比べて，当該熱交換器の高さを縮めることができる。また，前記熱交換器では，外周面或いは内周面のいずれか一方が略平坦面となるため見栄えもよい。
［０００６］
そして，前記熱交換器を，冷媒が循環されるヒートポンプサイクルを備えてなるヒートポンプ式加熱装置に用いる場合には，積層される前記複数の配管の全てを結ぶ二つの共通外接線の一方が当該熱交換器の外周面に沿った線分であることが望ましい。
これにより，前記ヒートポンプ式加熱装置では，前記複数の配管のうちで最も外径の大きい配管を除く他の配管について，その管路をできるだけ長く確保することができる。例えば，前記他の配管が冷媒が循環される配管である場合に，その冷媒の管路長を長く確保することで高い熱交換性能を確保することができる。
［０００７］
また，本発明は，前記熱交換器の製造方法として捉えることもできる。即ち，少なくとも一つの配管の外径が異なる複数の配管の全てを結ぶ共通外接線の一方が当該熱交換器の外周面或いは内周面に沿うように前記複数の配管を同時に位置決め可能な位置決め部材を用いて，前記一方の共通外接線を当該熱交換器の外周面或いは内周面に沿わせた状態で前記複数の配管を同時に加圧して曲成する曲成工程を繰り返し実行することにより，前記一方の共通外接線が当該熱交換器の外周面或いは内周面に沿った線分となる熱交換器を製造することを特徴とする熱交換器の製造方法である。係る熱交換器の製造方法によれば，複数の配管を同時に曲成することで前記熱交換器を製造することができるため，複数の配管を個別に曲成する工程とそれらを重ね合わせる工程とを順に実行する製造方法に比べて，本発明に係る熱交換器を容易に製造することができる。
［発明の効果］
［０００８］
本発明によれば，外径の異なる複数の配管を外側或いは内側に揃えて曲成して積層すればよいため，その製造を容易に行うことができる。例えば，前記複数の配管を平坦な部材を支点に内側に折り曲げれば，その複数の配管を内側に揃えて曲成することができる。また，前記複数の配管を平坦な部材に押さえつけた状態でその部材と逆方向に折り曲げれば，その複数の配管を外側に揃えて曲成することができる。しかも，外側又は内側のいずれか一方を揃える場合には，外径の大きい配管断面の仮想外接矩形領域に，外径の小さい配管の一部が干渉することになるため，中心位置を合わせて曲成する場合に比べて，当該熱交換器の高さを縮めることができる。また，前記熱交換器では，外周面或いは内周面のいずれか一方が略平坦面となるため見栄えもよい。
［付記１］
少なくとも一つの配管の外径が異なる複数の配管が繰り返し曲成されて積層されることにより該配管各々が順に接触して熱的に結合された熱交換器であって，
積層される前記複数の配管の全てを結ぶ二つの共通外接線の一方が当該熱交換器の外周面或いは内周面に沿った線分であることを特徴とする熱交換器。
［付記２］
前記複数の配管が，平面視で略矩形状，略扁平形状，略円形状，略楕円形状のいずれかに曲成されてなる付記１に記載の熱交換器。
［付記３］
前記付記１又は２のいずれかに記載の熱交換器と，冷媒が循環されるヒートポンプサイクルとを備えてなるヒートポンプ式加熱装置であって，
積層される前記複数の配管の全てを結ぶ二つの共通外接線の一方が当該熱交換器の外周面に沿った線分であることを特徴とするヒートポンプ式加熱装置。
［付記４］
少なくとも一つの配管の外径が異なる複数の配管の全てを結ぶ共通外接線の一方が当該熱交換器の外周面或いは内周面に沿うように前記複数の配管を同時に位置決め可能な位置決め部材を用いて，前記一方の共通外接線を当該熱交換器の外周面或いは内周面に沿わせた状態で前記複数の配管を同時に加圧して曲成する曲成工程を繰り返し実行することにより，前記一方の共通外接線が当該熱交換器の外周面或いは内周面に沿った線分となる熱交換器を製造することを特徴とする熱交換器の製造方法。 If the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are not arranged so as to be aligned outside or inside as described in the above embodiment or Example 1, the refrigerant pipe 41, the floor It is conceivable to arrange the central positions of the heating pipe 42 and the hot water supply pipe 43 so as to be aligned. In the second embodiment, the configuration will be described with reference to FIG. FIG. 6 is a schematic diagram of a main part showing a cross section of the water heat exchanger 142 according to the second embodiment, where (a) is a perspective view and (b) is a cross sectional view.
As shown in FIG. 6, in the water heat exchanger 142 according to the second embodiment, the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 have a straight line segment R passing through the center thereof. It is bent and laminated. The water heat exchanger 142 configured as described above has the contact points of the refrigerant pipe 41 with the floor heating pipe 42 and the hot water supply pipe 43 that are most distant from each other, and the refrigerant pipe 41 and the floor heating pipe 42 are heated. The influence between the exchange and the heat exchange of the refrigerant pipe 41 and the hot water supply pipe 43 is the smallest. In the water heat exchanger 142, the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 can have the same length.
However, the water heat exchanger 142 configured as described above is configured so that the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 are bent at the same time as described in the embodiment and the first embodiment. Cannot be formed using a flat member.
Therefore, when manufacturing the water heat exchanger 142, each of the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 is positioned so that the center positions thereof are linear. A positioning member having an uneven groove formed corresponding to the outer diameter is used. If this positioning member is used, the pipes can be simultaneously mechanically pressurized and bent while being positioned so that the center positions of the pipes are linear. According to such a manufacturing method, the refrigerant pipe 41, the floor heating pipe 42, and the hot water supply pipe 43 can be easily manufactured as compared with the case where they are individually bent and then combined .
(Appendix)
The above description can be appended as follows.
[Problems to be solved by the invention]
[0004]
However, in order to make the amount of water flowing through the floor heating pipe 103 larger than the amount of water flowing through the hot water supply pipe 101 in the water heat exchanger 100, the pipe diameter of the floor heating pipe 103 is larger than the pipe diameter of the hot water supply pipe 101. When the outer diameters of the pipes provided in the water heat exchanger 100 are made different, for example, it is difficult to bend and stack a plurality of pipes having different outer diameters so that their centers are aligned in a straight line. Become. For example, special manufacturing equipment that can be bent while being positioned so that the center positions of a plurality of pipes having different outer diameters coincide with each other is required.
Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is a heat exchanger in which a plurality of pipes having different outer diameters are bent and stacked. The object is to provide a heat exchanger that is easy to manufacture.
[Means for solving problems]
[0005]
In order to achieve the above object, the present invention provides a heat exchange in which a plurality of pipes having different outer diameters of at least one pipe are repeatedly bent and laminated so that the pipes are in contact with each other in order and are thermally coupled. One of two common outer tangent lines connecting all of the plurality of pipes to be stacked is a line segment along the outer peripheral surface or the inner peripheral surface of the heat exchanger. It is configured as a heat exchanger. Specifically, the plurality of pipes may be bent into any one of a substantially rectangular shape, a substantially flat shape, a substantially circular shape, and a substantially elliptical shape in plan view.
The heat exchanger according to the present invention can be manufactured easily because a plurality of pipes having different outer diameters may be bent and laminated on the outside or the inside. For example, if the plurality of pipes are bent inward with a flat member as a fulcrum, the plurality of pipes can be bent inward. Further, if the plurality of pipes are pressed against a flat member and bent in the opposite direction to the member, the plurality of pipes can be bent to the outside. In addition, when either the outer side or the inner side is aligned, a part of the pipe with the smaller outer diameter interferes with the virtual circumscribed rectangular area of the pipe section with the larger outer diameter. The height of the heat exchanger can be reduced as compared with the case where it is formed. Moreover, in the said heat exchanger, since either one of an outer peripheral surface or an inner peripheral surface becomes a substantially flat surface, it is good looking.
[0006]
When the heat exchanger is used in a heat pump type heating device having a heat pump cycle in which a refrigerant is circulated, one of two common outer tangent lines connecting all of the plurality of laminated pipes is the heat. A line segment along the outer peripheral surface of the exchanger is desirable.
Thereby, in the said heat pump type heating apparatus, the pipe line can be ensured as long as possible about other piping except piping with the largest outer diameter among these piping. For example, when the other pipe is a pipe through which the refrigerant is circulated, high heat exchange performance can be ensured by ensuring a long pipe length of the refrigerant.
[0007]
Moreover, this invention can also be grasped | ascertained as a manufacturing method of the heat exchanger. That is, the positioning member capable of simultaneously positioning the plurality of pipes so that one of the common outer tangent lines connecting all of the plurality of pipes having different outer diameters of at least one pipe is along the outer peripheral surface or the inner peripheral surface of the heat exchanger. By repeatedly performing the bending step of simultaneously pressing and bending the plurality of pipes in a state where the one common outer tangent line is along the outer peripheral surface or the inner peripheral surface of the heat exchanger, The heat exchanger manufacturing method is characterized in that a heat exchanger is manufactured in which the one common outer tangent is a line segment along an outer peripheral surface or an inner peripheral surface of the heat exchanger. According to the method for manufacturing a heat exchanger, since the heat exchanger can be manufactured by bending a plurality of pipes at the same time, a process of bending a plurality of pipes individually and a process of overlapping them, The heat exchanger according to the present invention can be easily manufactured as compared with the manufacturing method that sequentially executes the above.
[Effect of the invention]
[0008]
According to the present invention, a plurality of pipes having different outer diameters may be bent and laminated so as to be aligned on the outer side or the inner side, so that the manufacturing can be easily performed. For example, if the plurality of pipes are bent inward with a flat member as a fulcrum, the plurality of pipes can be bent inward. Further, if the plurality of pipes are pressed against a flat member and bent in the opposite direction to the member, the plurality of pipes can be bent to the outside. In addition, when either the outer side or the inner side is aligned, a part of the pipe with the smaller outer diameter interferes with the virtual circumscribed rectangular area of the pipe section with the larger outer diameter. The height of the heat exchanger can be reduced as compared with the case where it is formed. Moreover, in the said heat exchanger, since either one of an outer peripheral surface or an inner peripheral surface becomes a substantially flat surface, it is good looking.
[Appendix 1]
A heat exchanger in which a plurality of pipes having different outer diameters of at least one pipe are repeatedly bent and laminated so that the pipes are in contact with each other in order and are thermally coupled.
One of the two common outer tangent lines connecting all of the plurality of pipes to be laminated is a line segment along the outer peripheral surface or the inner peripheral surface of the heat exchanger.
[Appendix 2]
The heat exchanger according to appendix 1, wherein the plurality of pipes are bent into any one of a substantially rectangular shape, a substantially flat shape, a substantially circular shape, and a substantially elliptical shape in plan view.
[Appendix 3]
A heat pump type heating device comprising the heat exchanger according to any one of the above supplementary notes 1 and 2, and a heat pump cycle in which a refrigerant is circulated,
One of the two common outer tangent lines connecting all of the plurality of pipes to be stacked is a line segment along the outer peripheral surface of the heat exchanger.
[Appendix 4]
Using a positioning member capable of simultaneously positioning the plurality of pipes so that one of the common outer tangent lines connecting all of the plurality of pipes having different outer diameters of at least one pipe is along the outer peripheral surface or the inner peripheral surface of the heat exchanger. The one common outer tangent line along the outer peripheral surface or the inner peripheral surface of the heat exchanger, and repeatedly performing a bending step of simultaneously pressing and bending the plurality of pipes. A heat exchanger manufacturing method comprising manufacturing a heat exchanger in which a common outer tangent is a line segment along an outer peripheral surface or an inner peripheral surface of the heat exchanger.

本発明の実施の形態に係るヒートポンプ式給湯暖房機Ｘの概略構成を示すブロック図。The block diagram which shows schematic structure of the heat pump type hot-water supply heater X which concerns on embodiment of this invention. 本発明の実施の形態に係る水熱交換器１４の外観を示す要部模式図。The principal part schematic diagram which shows the external appearance of the water heat exchanger 14 which concerns on embodiment of this invention. 本発明の実施の形態に係る水熱交換器１４の断面を示す要部模式図。The principal part schematic diagram which shows the cross section of the water heat exchanger 14 which concerns on embodiment of this invention. 本発明の実施例１に係る水熱交換器１４１の外観を示す要部模式図。The principal part schematic diagram which shows the external appearance of the water heat exchanger 141 which concerns on Example 1 of this invention. 本発明の実施例１に係る水熱交換器１４１の断面を示す要部模式図。The principal part schematic diagram which shows the cross section of the water heat exchanger 141 which concerns on Example 1 of this invention. 実施例２に係る水熱交換器１４２の断面を示す要部模式図。The principal part schematic diagram which shows the cross section of the water heat exchanger 142 which concerns on Example 2. FIG. 従来の水熱交換器の構造を説明するための図（特許文献１の図５及び図７の引用）。The figure for demonstrating the structure of the conventional water heat exchanger (citation of FIG. 5 and FIG. 7 of patent document 1).

符号の説明Explanation of symbols

１…ヒートポンプサイクル
２…床暖房回路
３…給湯回路
１１…圧縮機
１２…室外空気熱交換器
１３…膨張弁
１４…水熱交換器（本発明に係る熱交換器の一例）
２１…床暖房装置
２２…循環ポンプ
３１…貯湯タンク
３２…循環ポンプ
３３…給水口
３４…給湯口
３５…電磁三方弁
４１…冷媒配管
４２…床暖房用配管
４３…給湯用配管
Ｘ…ヒートポンプ式給湯暖房機（本発明に係るヒートポンプ式加熱装置の一例） DESCRIPTION OF SYMBOLS 1 ... Heat pump cycle 2 ... Floor heating circuit 3 ... Hot water supply circuit 11 ... Compressor 12 ... Outdoor air heat exchanger 13 ... Expansion valve 14 ... Water heat exchanger (an example of the heat exchanger which concerns on this invention)
DESCRIPTION OF SYMBOLS 21 ... Floor heating apparatus 22 ... Circulation pump 31 ... Hot water storage tank 32 ... Circulation pump 33 ... Water supply port 34 ... Hot water supply port 35 ... Electromagnetic three-way valve 41 ... Refrigerant piping 42 ... Floor heating piping 43 ... Hot water supply piping X ... Heat pump type hot water supply Heater (an example of a heat pump heating device according to the present invention)

Claims (1)

少なくとも一つの配管の外径が異なる３以上の配管が繰り返し曲成されて積層されることにより該配管各々が順に接触して熱的に結合された熱交換器と，冷媒が循環されるヒートポンプサイクルとを備えてなるヒートポンプ式加熱装置であって，
前記熱交換器は，
前記３以上の配管の全てが積層方向に沿って揃うように曲成され，
積層される前記３以上の配管の全てを結ぶ共通外接線が当該熱交換器の外周面に沿った線分であり，
前記３以上の配管が，平面視で略矩形状，略扁平形状，略円形状，略楕円形状のいずれかに曲成されてなることを特徴とするヒートポンプ式加熱装置。 A heat exchanger in which three or more pipes having different outer diameters of at least one pipe are repeatedly bent and stacked so that the pipes are in contact with each other in order and thermally coupled, and a heat pump cycle in which refrigerant is circulated A heat pump type heating device comprising :
The heat exchanger is
All of the three or more pipes are bent so as to be aligned along the stacking direction;
Segment der the forming department co Tsugaisetsu line all the three or more pipe along the outer peripheral surface of the heat exchanger to be laminated is,
The heat pump heating apparatus, wherein the three or more pipes are bent into any one of a substantially rectangular shape, a substantially flat shape, a substantially circular shape, and a substantially elliptical shape in plan view .
JP2008175267A 2008-07-04 2008-07-04 Heat pump type heating device Expired - Fee Related JP5139177B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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WO2022164956A1 (en) * 2021-01-28 2022-08-04 Rheem Manufacturing Company Heat pump systems

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