JP4211040B2 - Outdoor unit for water heater - Google Patents

Outdoor unit for water heater Download PDF

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JP4211040B2
JP4211040B2 JP2005091605A JP2005091605A JP4211040B2 JP 4211040 B2 JP4211040 B2 JP 4211040B2 JP 2005091605 A JP2005091605 A JP 2005091605A JP 2005091605 A JP2005091605 A JP 2005091605A JP 4211040 B2 JP4211040 B2 JP 4211040B2
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pipe
hot water
refrigerant
heat exchanger
heat
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JP2006275322A5 (en
JP2006275322A (en
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洋一 高塚
要 服部
秀樹 森
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Mitsubishi Electric Corp
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Description

本発明は、給湯器用室外ユニットに係り、より詳しくは、断熱性能に優れた熱交換用配管を備えた給湯器用室外ユニットに関するものである。   The present invention relates to an outdoor unit for a water heater, and more particularly to an outdoor unit for a water heater provided with a heat exchange pipe having excellent heat insulation performance.

従来の給湯器用室外ユニットの熱交換用配管は、水が流れる給湯配管と、圧縮機で圧縮された高温、高圧のガス冷媒が流れる冷媒配管とが接触して熱交換できるように、交互に重ねて螺旋状に巻き回されており、全体形状がほぼ円筒状に形成され、熱交換用配管の外側のみが発泡断熱材で被覆されていた（例えば、特許文献１参照）。   The heat exchange pipes of the conventional outdoor unit for water heaters are alternately stacked so that the hot water pipes through which water flows and the refrigerant pipes through which high-temperature and high-pressure gas refrigerant compressed by the compressor come into contact can exchange heat. Thus, the entire shape was formed in a substantially cylindrical shape, and only the outside of the heat exchange pipe was covered with a foam heat insulating material (see, for example, Patent Document 1).

また、従来の蓄熱槽は、内槽、外装、及び発泡成形された硬質ウレタンフォームからなる断熱材で構成され、硬質ウレタンフォームは内槽側シート及び外槽側シートの間に注入されて一体成形され、蓄熱媒体と熱交換する蓄熱熱交換器を備えていた（例えば、特許文献２参照）。   The conventional heat storage tank is composed of an inner tank, an exterior, and a heat insulating material made of foamed rigid urethane foam. The rigid urethane foam is injected between the inner tank side sheet and the outer tank side sheet and integrally molded. And a heat storage heat exchanger that exchanges heat with the heat storage medium (see, for example, Patent Document 2).

特開２００３−２４７７４６号公報（第２頁−第３頁、第３図、第４図）Japanese Unexamined Patent Publication No. 2003-247746 (pages 2 to 3, FIGS. 3 and 4) 特開平６−３３１２８９号公報（第２頁−第３頁、第１図）JP-A-6-331289 (2nd page-3rd page, Fig. 1)

特許文献１に記載された給湯器用室外ユニットでは、ほぼ円筒形状に形成された熱交換用配管の外側を発泡断熱材で被覆しているが、熱交換用配管の周囲は空間となっていて断熱されていないため、この空間部より放熱されて放熱ロスが生じていた。また、熱交換用配管によって熱交換を行う場合、給湯配管と冷媒配管双方の温度差が大きい状態で実施するのが効率的であるが、冷媒配管の上下に給湯配管が配置され、さらにそれぞれが接触しているため、冷媒配管の熱は効率の一番良い給湯配管と熱交換すると共に、二番目に効率の良い次の相の給湯配管と同時に熱交換をしているため、もともと熱交換ロスが生じている。この状態において、熱交換用配管の外周を断熱するためには、給湯配管と冷媒配管との隙間に断熱材が入り込んで熱交換が阻害されないように、金属箔を外周に配置しなくてはならないため、この金属箔によって配管同士の熱伝導が促進され、さらに熱交換の効率ロスが増大し、しかも部品点数が増えるためコストアップの原因ともなっていた。   In the outdoor unit for hot water heater described in Patent Document 1, the outside of the heat exchange pipe formed in a substantially cylindrical shape is covered with a foam heat insulating material. Since this is not done, heat is radiated from the space and a heat dissipation loss occurs. In addition, when heat exchange is performed using heat exchange pipes, it is efficient to carry out in a state where the temperature difference between both the hot water supply pipe and the refrigerant pipe is large, but hot water supply pipes are arranged above and below the refrigerant pipe. Because of the contact, the heat of the refrigerant pipe exchanges heat with the hot water supply pipe with the highest efficiency, and heat exchange with the hot water supply pipe of the next most efficient next phase. Has occurred. In this state, in order to insulate the outer periphery of the heat exchange pipe, the metal foil must be disposed on the outer periphery so that the heat insulating material enters the gap between the hot water supply pipe and the refrigerant pipe and the heat exchange is not hindered. For this reason, heat conduction between the pipes is promoted by the metal foil, the efficiency loss of heat exchange is further increased, and the number of parts is increased, resulting in an increase in cost.

また、特許文献２に記載された蓄熱槽では、その形状を構成するために断熱材の周囲に外装部品を設けなければならず、コストアップをもたらしていた。   Moreover, in the heat storage tank described in patent document 2, in order to comprise the shape, exterior components had to be provided around the heat insulating material, resulting in an increase in cost.

本発明は、上記のような課題を解決するためになされたもので、冷媒対水熱交換器の熱交換用配管からの放熱ロスを低減すると共に、熱交換用配管間の無駄な接触によって生ずる熱交換ロスを低減し、より一層高効率に熱交換を行うことができる給湯用室外ユニットを提供することを目的とする。   The present invention has been made to solve the above-described problems, and reduces heat loss from the heat exchange pipe of the refrigerant-to-water heat exchanger and is caused by useless contact between the heat exchange pipes. An object of the present invention is to provide an outdoor unit for hot water supply that can reduce heat exchange loss and perform heat exchange with higher efficiency.

本発明に係る給湯器用室外ユニットは、圧縮機と、冷媒配管と給湯配管からなる熱交換用配管を有する冷媒対水熱交換器と、絞り弁と、蒸発器と、冷媒対水熱交換器から蒸発器へ流れる冷媒と蒸発器から圧縮機へと流れる冷媒間の熱交換を行う内部熱交換器とを備えた給湯用室外ユニットであって、熱交換用配管は螺旋状に形成されかつその螺旋形状が相互に非接触に形成され、複数単位に分離されて連通部で連通するとともに、熱交換用配管及び内部熱交換器の間に発泡断熱材を充填し、熱交換用配管及び内部熱交換器を一体成形する充填部を有する温水用ガスクーラーユニットを備えたものである。 An outdoor unit for a hot water heater according to the present invention includes a compressor, a refrigerant-to-water heat exchanger having a heat exchange pipe composed of a refrigerant pipe and a hot water supply pipe, a throttle valve, an evaporator, and a refrigerant-to-water heat exchanger. An outdoor unit for hot water supply comprising an internal heat exchanger for exchanging heat between a refrigerant flowing to the evaporator and a refrigerant flowing from the evaporator to the compressor, wherein the heat exchange pipe is formed in a spiral shape and the spiral Formed in non-contact with each other, separated into multiple units and communicated at the communication part, and filled with foam insulation between the heat exchange pipe and the internal heat exchanger, and the heat exchange pipe and the internal heat exchange A hot water gas cooler unit having a filling part for integrally molding the vessel is provided.

熱交換用配管及び内部熱交換器の隙間に発泡断熱材を充填して温水用ガスクーラーユニットを形成したので、熱交換用配管及び内部熱交換器の距離が一定に保たれ、熱交換効率が向上し、振動等による音の発生がなくなり、各部品間の間隔を必要最小限に抑えることができる。   Since the hot water gas cooler unit was formed by filling the gap between the heat exchange pipe and the internal heat exchanger with foam insulation, the distance between the heat exchange pipe and the internal heat exchanger was kept constant, and the heat exchange efficiency was improved. It is improved and the generation of sound due to vibration or the like is eliminated, and the interval between the components can be minimized.

実施の形態１．
図１は本発明の実施の形態１に係る給湯器用室外ユニットの分解斜視図、図２は図１の温水用ガスクーラーユニットの斜視図、図３は図１に示す給湯器用室外ユニットの冷媒給湯回路を示す配管系統図である。図において、給湯器用室外ユニットの最下段部には、冷媒対水用熱交換器４と、内部熱交換器５と、これらを接続する接続配管２と、サービス時などに給湯回路Ａから水を排水するための水抜き栓３とを内部に配置する温水用ガスクーラーユニット１が配置されている。 Embodiment 1 FIG.
1 is an exploded perspective view of an outdoor unit for water heater according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of a gas cooler unit for hot water in FIG. 1, and FIG. 3 is a refrigerant hot water supply for the outdoor unit for water heater shown in FIG. It is a piping system diagram showing a circuit. In the figure, in the lowermost part of the outdoor unit for water heater, water is supplied from the water heater A to the refrigerant-to-water heat exchanger 4, the internal heat exchanger 5, the connecting pipe 2 connecting them, and the service. A hot water gas cooler unit 1 is disposed in which a drain plug 3 for draining is disposed.

温水用ガスクーラーユニット１の上部には、冷凍サイクル回路Ｂの圧縮機１３が配置され、背面から図の左側面にかけてほぼＬ字状をした蒸発器１１が配置され、その手前には蒸発器１１と外気との熱交換を行うために風を送る送風機１２が配置されている。図１の右側面手前には、給湯回路Ａの水を循環させるための給湯ポンプ１４が配置され、給湯タンク（図示せず）からの水を水入口バルブ１５から温水用ガスクーラーユニット１の内部に取り入れ、冷媒対水熱交換器４の給湯配管４１を経由して給湯出口バルブ１９に至り、給湯タンクへ戻るようにしてある。また、給湯器用室外ユニットの外郭は、前面にグリル９を配置し、図の左側面に吸込み口を備えたフロントパネル８を配置すると共に、図の右側面から背面の蒸発器１１の端面まではこれらを覆うバックパネル１０を配置し、さらにバックパネル１０にはバルブ類を覆うサービスパネル１６が取り付けられ、これらの最上部にはトップパネル７を配置している。   A compressor 13 of the refrigeration cycle circuit B is disposed above the hot water gas cooler unit 1, and an approximately L-shaped evaporator 11 is disposed from the back side to the left side surface of the drawing. A blower 12 for sending wind to exchange heat with the outside air is arranged. A hot water supply pump 14 for circulating water in the hot water supply circuit A is disposed in front of the right side of FIG. 1, and water from a hot water supply tank (not shown) is supplied from the water inlet valve 15 to the inside of the hot water gas cooler unit 1. And the hot water outlet valve 19 is reached via the hot water supply pipe 41 of the refrigerant-to-water heat exchanger 4 and returned to the hot water tank. Further, the outer wall of the outdoor unit for the water heater is provided with a grille 9 on the front surface, a front panel 8 having a suction port on the left side surface in the figure, and from the right side surface in the figure to the end surface of the evaporator 11 on the back surface. A back panel 10 that covers them is disposed, and a service panel 16 that covers valves and the like is attached to the back panel 10, and a top panel 7 is disposed on the uppermost part thereof.

図４は図２に示す温水用ガスクーラーユニット１の縦断面図、図５は図４に示す冷媒対水熱交換器の熱交換用配管のイ−イ断面図である。図５に示すように、冷媒対水熱交換器４の熱交換用配管４０は、外周に複数条の山谷部を各条毎に連続して螺旋状に形成した捩り管を給湯配管４１としてその内部に水が流れるようにしてあり、一方、分岐した冷媒配管４２（４２ａ，４２ｂ，４２ｃ）を、給湯配管４１の外周に設けた各条毎の山谷部に沿ってそれぞれ螺旋状に巻きつけて嵌め込み、この冷媒配管４２内に冷媒が流れるようにしてある。そしてこの熱交換用配管４０を、図４に示すように螺旋状に形成して、その隙間に硬質ウレタン発泡断熱材５０を充填して、温水用ガスクーラーユニット１内に収納してある。   4 is a longitudinal sectional view of the hot water gas cooler unit 1 shown in FIG. 2, and FIG. 5 is a sectional view of the heat exchange pipe of the refrigerant-to-water heat exchanger shown in FIG. As shown in FIG. 5, the heat exchanging pipe 40 of the refrigerant-to-water heat exchanger 4 has a torsion pipe in which a plurality of peaks and valleys are continuously spirally formed on the outer circumference as a hot water supply pipe 41. Water is allowed to flow inside, and the branched refrigerant pipes 42 (42 a, 42 b, 42 c) are spirally wound along the mountain and valley portions of each strip provided on the outer periphery of the hot water supply pipe 41. The refrigerant is inserted into the refrigerant pipe 42 so that the refrigerant flows. The heat exchanging pipe 40 is formed in a spiral shape as shown in FIG. 4, and the gap is filled with a hard urethane foam heat insulating material 50 and accommodated in the hot water gas cooler unit 1.

熱交換用配管４０は、熱交換する距離を長くして加熱性能を向上するようにしてある。すなわち、螺旋状をなす熱交換用配管４０を例えば２単位の螺旋状の下部配管４０ａと上部配管４０ｂに分離して、限られたスペース内において有効に収納できるようにしてある。下部には距離の長い下部配管４０ａ配置し、上部には距離の短い上部配管４０ｂを配置して、これらを連通部４０ｃで連通してある。さらに、熱交換用配管４０の上部には内部熱交換器５を配置してあり、これらを冷媒回路Ｂの圧縮機１３や給湯回路Ａの給湯ポンプ１４などと接続するために、接続配管２を上方に突出させている。また、点検時等に、温水用ガスクーラーユニット１内部の水を給湯回路Ａから排水するために、給湯回路Ａの最下端より水抜き栓３を突出させている。   The heat exchanging pipe 40 is designed to improve the heating performance by increasing the distance for exchanging heat. That is, the heat exchange pipe 40 having a spiral shape is separated into, for example, two units of a spiral lower pipe 40a and an upper pipe 40b so that the heat exchange pipe 40 can be effectively stored in a limited space. A lower pipe 40a with a long distance is arranged at the lower part, and an upper pipe 40b with a short distance is arranged at the upper part, and these are communicated by a communication part 40c. Furthermore, an internal heat exchanger 5 is disposed above the heat exchanging pipe 40, and in order to connect these to the compressor 13 of the refrigerant circuit B, the hot water supply pump 14 of the hot water supply circuit A, etc. It protrudes upward. Further, at the time of inspection or the like, the drain plug 3 is protruded from the lowest end of the hot water supply circuit A in order to drain the water inside the hot water gas cooler unit 1 from the hot water supply circuit A.

次に、温水用ガスクーラーユニット１の製造方法について、図６を用いて説明する。図に示すように、金型６の内部に、熱交換用配管４０、内部熱交換器５をレイアウトし、そののちこれらの隙間に硬質ウレタン発泡断熱材５０を流し込み、箱体形状を形成する。こうして、熱交換用配管４０、接続配管２（図２参照）及び内部熱交換器５の周囲を硬質ウレタン発泡断熱材５０で覆うことによって、放熱ロスを低減することができる。   Next, the manufacturing method of the hot water gas cooler unit 1 is demonstrated using FIG. As shown in the figure, a heat exchanging pipe 40 and an internal heat exchanger 5 are laid out inside the mold 6, and thereafter, a hard urethane foam heat insulating material 50 is poured into these gaps to form a box shape. Thus, the heat loss can be reduced by covering the periphery of the heat exchange pipe 40, the connection pipe 2 (see FIG. 2) and the internal heat exchanger 5 with the hard urethane foam heat insulating material 50.

次に、給湯器用室外機ユニットの作用について説明する。圧縮機１３によって高温、高圧になった加熱ガス冷媒は、冷媒対水熱交換器４の熱交換用配管４０の冷媒配管４２に流入する。また、給湯ポンプ１４によって水入口バルブ１５から冷媒対水熱交換器４の熱交換用配管４０の給湯配管４１に取り入れられた水は、給湯配管４１を通過する際に冷媒配管４２を通過する冷媒によって熱交換され、水が加熱される。そして、凝縮液化した冷媒は絞り弁１７によって減圧され、蒸発器１１に流入し、送風機１２によって送風された大気の熱を吸収して蒸発ガス化され、内部熱交換器５において再加熱されて圧縮機１３に戻る。この際、内部熱交換器５へ流れ込む高温、高圧の加熱ガス冷媒の流量は、流量調整弁１８によって調整される。   Next, the operation of the outdoor unit for water heater will be described. The heated gas refrigerant that has become high temperature and high pressure by the compressor 13 flows into the refrigerant pipe 42 of the heat exchange pipe 40 of the refrigerant-to-water heat exchanger 4. In addition, water taken into the hot water supply pipe 41 of the heat exchange pipe 40 of the refrigerant-to-water heat exchanger 4 from the water inlet valve 15 by the hot water supply pump 14 passes through the refrigerant pipe 42 when passing through the hot water supply pipe 41. The water is heated by heat exchange. Then, the condensed and liquefied refrigerant is decompressed by the throttle valve 17, flows into the evaporator 11, absorbs the heat of the air blown by the blower 12, is evaporated and gasified, is reheated in the internal heat exchanger 5 and is compressed. Return to machine 13. At this time, the flow rate of the high-temperature and high-pressure heated gas refrigerant flowing into the internal heat exchanger 5 is adjusted by the flow rate adjusting valve 18.

実施の形態１に係る給湯器用室外ユニットの温水用ガスクーラユニット１は、冷媒配管４２及び給湯配管４１によって構成される熱交換用配管４０と、内部熱交換器５とを、硬質ウレタン発泡断熱材５０によって一体成形して箱体を形成したので、それぞれの表面が断熱されて放熱ロスが低減される。また、内部熱交換器５や熱交換用配管４０、あるいは接続する熱交換用配管４０同士の間隔を維持して接触を避けることができるため、配管同士の熱交換ロスによる無駄を省き、接触による音の発生を抑制することができる。また配管を硬質ウレタン発泡断熱材５０によって直接保持するため、配管同士の間隔を必要最小限に押さえることができ、コンパクト化することができるので、実用性が高い。   The hot water gas cooler unit 1 of the outdoor unit for hot water heater according to the first embodiment includes a heat exchange pipe 40 constituted by the refrigerant pipe 42 and the hot water supply pipe 41 and the internal heat exchanger 5, and a rigid urethane foam heat insulating material 50. Since the box is formed by integral molding, the surfaces are insulated and the heat dissipation loss is reduced. Moreover, since it is possible to avoid contact by maintaining the interval between the internal heat exchanger 5 and the heat exchange pipe 40 or between the heat exchange pipes 40 to be connected, the waste due to heat exchange loss between the pipes is eliminated, and the contact Generation of sound can be suppressed. Moreover, since piping is directly hold | maintained with the hard urethane foam heat insulating material 50, since the space | interval of piping can be suppressed to the required minimum and it can make compact, it is highly practical.

実施の形態２．
図７は本発明の実施の形態２に係る温水用ガスクーラーユニットの斜視図、図８は図７の縦断面図である。本実施の形態２では、温水用ガスクーラーユニット１の内部に硬質ウレタン発泡断熱材５０を注入する際、内部熱交換器５や熱交換用配管４０の位置が動いて接触したりしないように、あらかじめ位置を固定しておくようにしたものである。なお、図２、図４と同一部分には同じ符合を付し、説明を省略する。 Embodiment 2. FIG.
7 is a perspective view of a hot water gas cooler unit according to Embodiment 2 of the present invention, and FIG. 8 is a longitudinal sectional view of FIG. In the second embodiment, when the hard urethane foam heat insulating material 50 is injected into the hot water gas cooler unit 1, the positions of the internal heat exchanger 5 and the heat exchange pipe 40 are not moved and contacted. The position is fixed in advance. 2 and 4 are denoted by the same reference numerals, and description thereof is omitted.

図において、熱交換用配管４０の距離の短い上部配管４０ｂと内部熱交換器５の間には、距離が短い上部配管４０ｂの螺旋状の配管形状に合わせてほぼ半円状の凹みを備え、それぞれの上部配管４０ｂを保持する櫛形状の第１のスペーサー２０が配置される。また、距離の長い下部配管４０ａ、距離の短い上部配管４０ｂの間には第２のスペーサー２１が配置され、距離の長い下部配管４０ａの最下端には第３のスペーサー２２が配置されている。また、接続配管２の周囲には、それぞれの配管が接触しないよう配管位置を固定する第４のスペーサー２３が配置されている。そして、このようにして内部熱交換器５と上部配管４０ｂ、下部配管４０ａの関係を位置決めした後、これらの隙間に硬質ウレタン発泡断熱材５０を充填する。   In the figure, between the upper pipe 40b having a short distance of the heat exchanging pipe 40 and the internal heat exchanger 5, a substantially semicircular recess is provided in accordance with the spiral pipe shape of the upper pipe 40b having a short distance, Comb-shaped first spacers 20 that hold the respective upper pipes 40b are arranged. The second spacer 21 is disposed between the long lower pipe 40a and the short upper pipe 40b, and the third spacer 22 is disposed at the lowermost end of the long lower pipe 40a. A fourth spacer 23 is disposed around the connection pipe 2 to fix the pipe position so that the pipes do not come into contact with each other. And after positioning the relationship between the internal heat exchanger 5, the upper pipe 40b, and the lower pipe 40a in this way, the hard urethane foam heat insulating material 50 is filled into these gaps.

実施の形態２に係る給湯器用室外ユニットの温水用ガスクーラユニット１は、内部熱交換器５や熱交換用配管４０間に第１〜第４のスペーサー２０〜２３を設けて位置決めした後に、これらの隙間に硬質ウレタン発泡断熱材５０を充填したので、熱交換用配管４０間の距離が一定に保たれ、これによって熱交換用配管４０同士の接触や、組み立て時の位置ずれの発生を抑制することができ、接触による無駄な熱交換がなくなり、熱交換効率が向上し、振動等による音の発生もなくなる。また、各部品間の間隔を必要最小限に抑えることができるため、温水用ガスクーラーユニット１をコンパクトにすることができ、さらに、部品同士の位置決めを行ったのち硬質ウレタン発泡断熱材５０を注入するので、注入の際に配管などがずれることもなく、組み立て性が向上する。   After the hot water gas cooler unit 1 of the outdoor unit for hot water heater according to the second embodiment is positioned by providing the first to fourth spacers 20 to 23 between the internal heat exchanger 5 and the heat exchange pipe 40, these Since the gap is filled with the hard urethane foam heat insulating material 50, the distance between the heat exchanging pipes 40 is kept constant, thereby suppressing the contact between the heat exchanging pipes 40 and the occurrence of misalignment during assembly. This eliminates wasteful heat exchange due to contact, improves heat exchange efficiency, and eliminates the generation of sound due to vibration or the like. Moreover, since the space | interval between each component can be suppressed to the required minimum, the gas cooler unit 1 for hot water can be made compact, and also after positioning components, the hard urethane foam heat insulating material 50 is inject | poured. As a result, the piping and the like are not displaced during the injection, and the assemblability is improved.

本発明の実施の形態１に係る給湯器用室外ユニットの分解斜視図である。It is a disassembled perspective view of the outdoor unit for water heaters which concerns on Embodiment 1 of this invention. 図１の温水用ガスクーラーユニットの斜視図である。It is a perspective view of the gas cooler unit for hot water of FIG. 図１の給湯器用室外ユニットの冷媒給湯回路を示す配管系統図である。It is a piping system diagram which shows the refrigerant | coolant hot water supply circuit of the outdoor unit for hot water heaters of FIG. 図２の温水用ガスクーラーユニットの縦断面図である。It is a longitudinal cross-sectional view of the gas cooler unit for hot water of FIG. 図４の熱交換用配管のイ−イ断面図である。FIG. 5 is an II cross-sectional view of the heat exchange pipe of FIG. 4. 温水用ガスクーラーユニットの製造方法を示す縦断面図である。It is a longitudinal cross-sectional view which shows the manufacturing method of the gas cooler unit for warm water. 本発明の実施の形態２に係る温水用ガスクーラーユニットの斜視図である。It is a perspective view of the gas cooler unit for hot water which concerns on Embodiment 2 of this invention. 図７の縦断面図である。It is a longitudinal cross-sectional view of FIG.

符号の説明Explanation of symbols

１ 給湯器用ガスクーラーユニット、２ 接続配管、４ 冷媒対水用熱交換器、５ 内部熱交換器、６ 金型、２０，２１，２２，２３ スペーサー、４０ 熱交換用配管、４０ａ 下部配管、４０ｂ 上部配管、４０ｃ 連通部、４１ 給湯配管、４２ 冷媒配管、５０ 硬質ウレタン発泡断熱材。
1 Gas cooler unit for water heater, 2 connection piping, 4 heat exchanger for refrigerant to water, 5 internal heat exchanger, 6 mold, 20, 21, 22, 23 spacer, 40 heat exchange piping, 40a lower piping, 40b Upper piping, 40c communication portion, 41 hot water supply piping, 42 refrigerant piping, 50 rigid urethane foam insulation.

Claims (5)

圧縮機と、冷媒配管と給湯配管からなる熱交換用配管を有する冷媒対水熱交換器と、絞り弁と、蒸発器と、前記冷媒対水熱交換器から前記蒸発器へ流れる冷媒と前記蒸発器から前記圧縮機へと流れる冷媒間の熱交換を行う内部熱交換器とを備えた給湯用室外ユニットであって、
前記熱交換用配管は螺旋状に形成されかつその螺旋形状が相互に非接触に形成され、複数単位に分離されて連通部で連通するとともに、前記熱交換用配管及び内部熱交換器の間に発泡断熱材を充填し、前記熱交換用配管及び内部熱交換器を一体成形する充填部を有する温水用ガスクーラーユニットを備えたことを特徴とする給湯器用室外ユニット。 A compressor, a refrigerant-to-water heat exchanger having a heat exchange pipe composed of a refrigerant pipe and a hot water supply pipe, a throttle valve, an evaporator, a refrigerant flowing from the refrigerant-to-water heat exchanger to the evaporator, and the evaporation An outdoor unit for hot water supply comprising an internal heat exchanger for exchanging heat between the refrigerant flowing from the heater to the compressor,
The heat exchange pipe is formed in a spiral shape and the spiral shapes are formed in a non-contact manner, separated into a plurality of units and communicated with each other at a communication portion, and between the heat exchange pipe and the internal heat exchanger. An outdoor unit for a hot water heater comprising a hot water gas cooler unit that is filled with a foam heat insulating material and has a filling portion that integrally forms the heat exchange pipe and the internal heat exchanger. 前記熱交換用配管及び内部熱交換器を保持するスペーサを備え、これらの熱交換用配管及び内部熱交換器配管の間に前記発泡断熱材を充填することを特徴とする請求項１記載の給湯器用室外ユニット。   The hot water supply according to claim 1, further comprising a spacer for holding the heat exchange pipe and the internal heat exchanger, wherein the foam heat insulating material is filled between the heat exchange pipe and the internal heat exchanger pipe. Dexterity outdoor unit. 前記発泡断熱材が硬質ウレタン発泡断熱材であることを特徴とする請求項１または２記載の給湯器用室外ユニット。   The outdoor unit for hot water heaters according to claim 1 or 2, wherein the foam heat insulating material is a hard urethane foam heat insulating material. 前記熱交換用配管の給湯配管外周に凹状の螺旋部を設け、該螺線部に沿って冷媒配管を巻き付けたことを特徴とする請求項１〜３のいずれかに記載の給湯器用室外ユニット。 The outdoor unit for hot water heaters according to any one of claims 1 to 3 , wherein a concave spiral portion is provided on an outer periphery of the hot water supply pipe of the heat exchange pipe, and a refrigerant pipe is wound along the spiral portion. 圧縮機と、冷媒配管と給湯配管からなる熱交換用配管を有する冷媒対水熱交換器と、絞り弁と、蒸発器と、前記冷媒対水熱交換器から前記蒸発器へ流れる冷媒と前記蒸発器から前記圧縮機へと流れる冷媒間の熱交換を行う内部熱交換器とを備えた給湯用室外ユニットであって、
前記熱交換用配管は下部配管と、この下部配管の上部に配置された上部配管と、前記下部配管と前記上部配管を接続する連通部とを有するとともに、螺旋状に形成されかつその螺旋形状が相互に非接触に形成され、前記熱交換用配管の周囲に発泡断熱材を充填し一体成形した充填部を有する温水用ガスクーラーユニットを備えたことを特徴とする給湯器用室外ユニット。 A compressor, a refrigerant-to-water heat exchanger having a heat exchange pipe composed of a refrigerant pipe and a hot water supply pipe, a throttle valve, an evaporator, a refrigerant flowing from the refrigerant-to-water heat exchanger to the evaporator, and the evaporation An outdoor unit for hot water supply comprising an internal heat exchanger for exchanging heat between the refrigerant flowing from the heater to the compressor,
The heat exchanging pipe has a lower pipe, an upper pipe disposed on the lower pipe, a communication portion connecting the lower pipe and the upper pipe, and is formed in a spiral shape and has a spiral shape. An outdoor unit for a hot water heater, comprising a hot water gas cooler unit which is formed in a non-contact manner and has a filling portion integrally formed by filling a foam heat insulating material around the heat exchange pipe.
JP2005091605A 2005-03-28 2005-03-28 Outdoor unit for water heater Expired - Fee Related JP4211040B2 (en)

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JP5255236B2 (en) * 2007-06-25 2013-08-07 古河電気工業株式会社 Heat exchanger and heat exchange system
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JP5630427B2 (en) * 2011-11-25 2014-11-26 三菱電機株式会社 Heat pump water heater outdoor unit
JP6448771B2 (en) * 2015-04-09 2019-01-09 三菱電機株式会社 Twisted tube heat exchanger
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