JP2005241216A - Heat pump type hot water supply heating system - Google Patents

Heat pump type hot water supply heating system Download PDF

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JP2005241216A
JP2005241216A JP2004054519A JP2004054519A JP2005241216A JP 2005241216 A JP2005241216 A JP 2005241216A JP 2004054519 A JP2004054519 A JP 2004054519A JP 2004054519 A JP2004054519 A JP 2004054519A JP 2005241216 A JP2005241216 A JP 2005241216A
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hot water
heat exchanger
heating
valve
refrigerant
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JP4148909B2 (en
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Hideji Hibi
秀二 日比
Satoshi Hoshino
聡 星野
Kiyoshi Koyama
清 小山
Isao Arai
功 新井
Tomonori Isobe
知典 礒部
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Sanyo Electric Co Ltd
Sanyo Air Conditioners Co Ltd
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Sanyo Electric Co Ltd
Sanyo Air Conditioners Co 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]
    • Y02B30/12—Hot water central heating systems using heat pumps

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently stabilize capacity by preventing capacity deterioration of a heat pump unit. <P>SOLUTION: Control is carried out by controllers S1 and S2 such that hot water storage operation is stopped on the basis of an output of a hot water temperature detection sensor provided in a hot water storage tank 27, but when a detection output of 55°C or more is inputted into the controller S2 from a predetermined sensor, or operation stop signals are inputted from floor heating remote controllers 3 and 4, and a bathroom heating remote controller 23, the detection output or all of the operation stop signals are transmitted to the controller S1. In the controller S1, when the detection output or all of the operation stop signals is transmitted, discrimination of whether it is a hot water storage stop command or a heating stop command is carried out. If it is distinguished that it is a heating stop command, the controller S1 judges whether or not a first open and close valve 13 for heating is presently opened, and if it is opened, the controller S1 carries out control such that the first open and close valve 13 is closed after passage of a predetermined time such as ten seconds. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、ＨＦＣやＣＯ２等の冷媒を用いたヒートポンプ式給湯暖房装置に関する。 The present invention relates to a heat pump hot water heater / heater using a refrigerant such as HFC or CO 2 .

従来のこの種のヒートポンプ式給湯暖房装置は、ヒートポンプユニットで熱交換して得られた高温水を貯湯タンクに貯湯・蓄熱し、このタンクの高温水を給湯や風呂に使用するとともに、この高温水と熱交換して得られた暖房用温水を用いて温水暖房を行うものが知られている。このものでは、暖房負荷が大きいと十分な温度の温水が得られないものであった。   This type of conventional heat pump type hot water heater / heater stores hot water obtained by heat exchange in the heat pump unit in a hot water storage tank, stores the hot water in the hot water storage tank, and uses the hot water in this tank for hot water supply and baths. What performs warm water heating using the warm water for heating obtained by heat-exchange with is known. In this case, when the heating load is large, hot water with sufficient temperature cannot be obtained.

また、ヒートポンプユニットの冷媒回路に給湯用の水冷媒熱交換器と暖房用の水冷媒熱交換器を直列に組み込み、給湯用の温水と暖房用の温水とが得られるようにしたものが知られている（例えば、特許文献１参照）。   In addition, a water supply water refrigerant heat exchanger for heating and a water refrigerant heat exchanger for heating are incorporated in series in the refrigerant circuit of the heat pump unit so that hot water for hot water supply and hot water for heating can be obtained. (For example, refer to Patent Document 1).

ところが、この特許文献１に示すものでは、温水暖房を行っているときは高温水の貯湯ができなくなるため、高温水の貯湯と温水暖房のいずれかを優先させたり、交互に行うなどしなければならず、使い勝手の面で問題があった。   However, in the one shown in Patent Document 1, since hot water cannot be stored during hot water heating, priority is given to either hot water storage or hot water heating or alternately. There was a problem in terms of usability.

このため、高温水の貯湯と温水暖房とを同時に行う場合や、どちらか一方を行う場合のいずれにも対応できるようにし、使い勝手の良いヒートポンプ式給湯暖房装置が要望された。   For this reason, there has been a demand for an easy-to-use heat pump type hot water heater / heater that can handle both hot water storage and hot water heating at the same time and / or hot water heating.

そこで、特許文献２で示すように、能力調整可能な圧縮機と、第１水冷媒熱交換器、第１開閉弁及び第１減圧装置よりなる第１分岐路と第２水冷媒熱交換器、第２開閉弁及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と床暖房パネル等の温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを備える技術が提案された。
特開２００２−２５７３６６号公報 特願２００３−５９４２の願書に添付された明細書及び図面 Therefore, as shown in Patent Document 2, a compressor capable of adjusting capacity, a first water refrigerant heat exchanger, a first on-off valve and a first branching path composed of a first pressure reducing device and a second water refrigerant heat exchanger, A parallel circuit of the second branching path composed of the second on-off valve and the second pressure reducing device and the air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit, and the first water refrigerant heat exchanger and the floor A technology comprising a first hot water circulation path for circulating hot water between a hot water heater such as a heating panel and a second hot water circulation path for circulating hot water between the second water refrigerant heat exchanger and a hot water storage tank. Was proposed.
JP 2002-257366 A Specification and drawings attached to application for Japanese Patent Application No. 2003-5942

しかし、前記第１開閉弁は第１水冷媒熱交換器の下流に、また第２開閉弁は第２水冷媒熱交換器の下流に配設されたものである。このため、暖房と貯湯の同時運転から暖房の単独運転か貯湯単独運転に切り替る際に、運転しない側の開閉弁を閉じると、運転しない側の水冷媒熱交換器に凝縮された冷媒が溜まり、熱交換されてしまい、このためヒートポンプユニットの能力低下を招く問題がある。   However, the first on-off valve is disposed downstream of the first water refrigerant heat exchanger, and the second on-off valve is disposed downstream of the second water refrigerant heat exchanger. For this reason, when switching from the simultaneous operation of heating and hot water storage to the single operation of heating or the single operation of hot water storage, if the open / close valve on the non-operating side is closed, the condensed refrigerant accumulates in the water refrigerant heat exchanger on the non-operating side. Therefore, there is a problem that heat is exchanged, which causes a decrease in the capacity of the heat pump unit.

そこで本発明は、ヒートポンプユニットの能力低下を防止して、効率的に能力を安定させることを目的とする。   Accordingly, an object of the present invention is to prevent a decrease in the capacity of the heat pump unit and to stabilize the capacity efficiently.

このため第１の発明は、能力調整可能な圧縮機と、暖房用の第１開閉弁、暖房用の第１水冷媒熱交換器及び第１減圧装置よりなる第１分岐路と貯湯用の第２開閉弁、貯湯用の第２水冷媒熱交換器及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを備えたことを特徴とする。   For this reason, the first invention provides a first branch passage and a first hot water storage unit comprising a compressor capable of adjusting capacity, a first on-off valve for heating, a first water refrigerant heat exchanger for heating, and a first pressure reducing device. A parallel circuit of the second branch path composed of the two on-off valves, the second water refrigerant heat exchanger for storing hot water and the second pressure reducing device, and the air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit; A first hot water circulation path for circulating hot water between the first water refrigerant heat exchanger and the hot water heater; and a second hot water circulation for circulating hot water between the second water refrigerant heat exchanger and the hot water storage tank. And a road.

第２の発明は、能力調整可能な圧縮機と、暖房用の第１開閉弁、暖房用の第１水冷媒熱交換器及び第１減圧装置よりなる第１分岐路と貯湯用の第２開閉弁、貯湯用の第２水冷媒熱交換器及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と床暖房パネル等の温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを形成し、貯湯運転と暖房運転との同時運転から貯湯運転か暖房運転かを停止する際に停止する方に対応する前記第１開閉弁又は第２開閉弁を一定時間経過後に閉じるように制御する制御装置を設けたことを特徴とする。   According to a second aspect of the present invention, there is provided a first branch passage comprising a compressor capable of adjusting capacity, a first opening / closing valve for heating, a first water / refrigerant heat exchanger for heating, and a first pressure reducing device, and a second opening / closing for hot water storage. A parallel circuit of a valve, a second water refrigerant heat exchanger for hot water storage and a second branch path composed of a second pressure reducing device and an air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit, and the first 1st hot water circulation path which circulates warm water between 1 water refrigerant heat exchangers and hot water heaters, such as a floor heating panel, and the 2nd which circulates warm water between the 2nd water refrigerant heat exchanger and a hot water storage tank 2 forms a hot water circulation path, and the first on-off valve or the second on-off valve corresponding to the one that stops when stopping the hot water storage operation or the heating operation from the simultaneous operation of the hot water storage operation and the heating operation passes a certain time A control device that controls to be closed later is provided.

第３の発明は、能力調整可能な圧縮機と、暖房用の第１開閉弁、暖房用の第１水冷媒熱交換器及び第１減圧装置よりなる第１分岐路と貯湯用の第２開閉弁、貯湯用の第２水冷媒熱交換器及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と床暖房パネル等の温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを形成し、貯湯運転と暖房運転との同時運転から貯湯運転か暖房運転かを停止する際の停止信号を受けてから時間を計時するタイマと、このタイマによる所定時間経過後に停止信号に対応する前記第１開閉弁又は第２開閉弁を閉じるように制御する制御装置を設けたことを特徴とする。   According to a third aspect of the present invention, there is provided a first branch passage comprising a compressor capable of adjusting capacity, a first opening / closing valve for heating, a first water / refrigerant heat exchanger for heating, and a first pressure reducing device, and a second opening / closing for hot water storage. A parallel circuit of a valve, a second water refrigerant heat exchanger for hot water storage and a second branch path composed of a second pressure reducing device and an air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit, and the first 1st hot water circulation path which circulates warm water between 1 water refrigerant heat exchangers and hot water heaters, such as a floor heating panel, and the 2nd which circulates warm water between the 2nd water refrigerant heat exchanger and a hot water storage tank A timer that counts the time after receiving a stop signal when stopping the hot water storage operation or the heating operation from the simultaneous operation of the hot water storage operation and the heating operation, and after a predetermined time elapses by this timer A control for controlling the first on-off valve or the second on-off valve corresponding to the stop signal to be closed. Characterized in that a device.

また第４の発明は、第１乃至第３の発明において、前記冷媒回路の第１分岐路の第１水冷媒熱交換器から流出した冷媒と前記空気熱交換器から流出した冷媒との熱交換を行う熱交換器を備えたことを特徴とする。   According to a fourth invention, in the first to third inventions, heat exchange between the refrigerant flowing out of the first water refrigerant heat exchanger in the first branch of the refrigerant circuit and the refrigerant flowing out of the air heat exchanger. The heat exchanger which performs this is provided.

第１の発明によれば、運転しない暖房用の第１開閉弁又は貯湯用の第２開閉弁が閉じても、暖房用の第１水冷媒熱交換器又は貯湯用の第２水冷媒熱交換器に凝縮された冷媒が溜まるのが極力防止され、ヒートポンプユニットの能力低下を防止できて、効率的に能力を安定させることができる。また、第２及び第３の発明によれば、暖房と貯湯の同時運転が行なわれているときに、いずれかの運転を停止する場合には、対応する第１開閉弁又は第２開閉弁を直ちに閉じるのではなく、所定時間経過後に対応する第１開閉弁又は第２開閉弁を閉じるように制御するから、冷媒の流通を安定化でき、圧力の上昇を防止することができる。   According to the first aspect of the present invention, even if the first on-off valve for heating or the second on-off valve for hot water storage that is not operated is closed, the first water refrigerant heat exchanger for heating or the second water refrigerant heat exchange for hot water storage is closed. It is possible to prevent the refrigerant condensed in the vessel from accumulating as much as possible, to prevent the heat pump unit from being reduced in capacity, and to stabilize the capacity efficiently. Further, according to the second and third inventions, when any operation is stopped when simultaneous operation of heating and hot water storage is being performed, the corresponding first on-off valve or second on-off valve is set. Instead of closing immediately, the control is performed so that the corresponding first on-off valve or second on-off valve is closed after a lapse of a predetermined time. Therefore, it is possible to stabilize the refrigerant flow and prevent an increase in pressure.

以下、本発明の実施の形態を図面に基づき説明する。図１はヒートポンプ式給湯暖房装置の全体システムを示す系統図である。図１において、Ａはヒートポンプユニット、Ｂはタンクユニット、Ｃ１は温水暖房用の第１温水循環路、Ｃ２は貯湯用の第２温水循環路、Ｒは前記ヒートポンプユニットＡに内蔵された冷媒回路である。ＨＦＣやＣＯ２等の冷媒を用いることができるが、本実施形態ではＣＯ２を用いる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system diagram showing an overall system of a heat pump hot water supply / room heating system. In FIG. 1, A is a heat pump unit, B is a tank unit, C1 is a first hot water circulation path for hot water heating, C2 is a second hot water circulation path for hot water storage, and R is a refrigerant circuit built in the heat pump unit A. is there. Although a refrigerant such as HFC or CO 2 can be used, CO 2 is used in this embodiment.

１及び２は第１温水循環路Ｃ１に設けられた床暖房パネル、３及び４は前記床暖房パネル１及び２に対応して設けられた床暖房リモートコントローラ（以下、「床暖房リモコン」という）であり、前記第１温水循環路Ｃ１には、熱動弁５及び６、循環ポンプ７、膨張タンク８、冷媒と水とを熱交換させる暖房用の第１水冷媒熱交換器９の水流路９Ｂ、バイパス管１０などが設けられている。   1 and 2 are floor heating panels provided in the first hot water circulation path C1, and 3 and 4 are floor heating remote controllers provided corresponding to the floor heating panels 1 and 2 (hereinafter referred to as "floor heating remote controller"). In the first hot water circulation path C1, the water valves of the heat valves 5 and 6, the circulation pump 7, the expansion tank 8, and the first water refrigerant heat exchanger 9 for heating that exchanges heat between the refrigerant and water are provided. 9B, a bypass pipe 10 and the like are provided.

前記冷媒回路Ｒは、ＣＯ２冷媒を吸入圧縮し高温高圧にする能力調整が可能な２段圧縮式の圧縮機１１と、暖房用の第１開閉弁１３、前記第１水冷媒熱交換器９の冷媒流路９Ａ、内部熱交換器１２の一次流路１２Ａ及び第１膨張弁（減圧装置）１４よりなる第１分岐路Ｐ１と貯湯用の第２開閉弁１６、冷媒と水とを熱交換させる貯湯用の第２水冷媒熱交換器１５の冷媒流路１５Ａ及び第２膨張弁（減圧装置）１７よりなる第２分岐路Ｐ２との並列回路と、外気と冷媒との熱交換を行う空気熱交換器１８と、内部熱交換器１２の二次流路１２Ｂと、アキュムレーター１９とが順次環状に配管接続されている。 The refrigerant circuit R includes a two-stage compression compressor 11 capable of adjusting the capacity of suction and compression of CO 2 refrigerant into high temperature and high pressure, a first on-off valve 13 for heating, and the first water refrigerant heat exchanger 9. Heat exchange between the refrigerant flow path 9A, the primary flow path 12A of the internal heat exchanger 12 and the first expansion valve (pressure reduction device) 14, the second on-off valve 16 for hot water storage, and the refrigerant and water. Air for performing heat exchange between the outside air and the refrigerant, and a parallel circuit of the second branch passage P2 including the refrigerant flow path 15A of the second water refrigerant heat exchanger 15 and the second expansion valve (decompression device) 17 for hot water storage. The heat exchanger 18, the secondary flow path 12B of the internal heat exchanger 12, and the accumulator 19 are sequentially piped in a ring.

前記第１温水循環路Ｃ１には、第１水冷媒熱交換器９の水流路９Ｂから流出した暖房用温水の温度を検出するサーミスタ２０、流量調整弁２１、浴室暖房用のファンコイル２２が設けられている。２３は浴室暖房リモートコントローラ（以下、「浴室暖房リモコン」という）、２４はファンコイル２２の入口部に設けられた熱動弁、２５は循環ポンプ７によって膨張タンク８から流出した温水の一部を床暖房パネル１、２に供給するための熱動弁、２６は床暖房パネル１、２に流入する温水温度を検知するサーミスタである。   The first hot water circulation path C1 is provided with a thermistor 20, a flow rate adjusting valve 21, and a fan coil 22 for bathroom heating that detect the temperature of warm water for heating that has flowed out of the water flow path 9B of the first water refrigerant heat exchanger 9. It has been. Reference numeral 23 is a bathroom heating remote controller (hereinafter referred to as “bathroom heating remote controller”), 24 is a thermal valve provided at the inlet of the fan coil 22, and 25 is a part of hot water flowing out from the expansion tank 8 by the circulation pump 7. A thermal valve 26 for supplying the floor heating panels 1 and 2 is a thermistor 26 that detects the temperature of hot water flowing into the floor heating panels 1 and 2.

前記第２温水循環路Ｃ２は、第２水冷媒熱交換器１５の水流路１５Ｂと貯湯タンク２７とが循環ポンプ２８、流量調整弁２９を介して環状に接続されている。３０は第２水冷媒熱交換器１５の水流路１５Ｂから流出した温水温度を検知するサーミスタである。   In the second hot water circulation path C <b> 2, the water flow path 15 </ b> B of the second water refrigerant heat exchanger 15 and the hot water storage tank 27 are annularly connected via a circulation pump 28 and a flow rate adjustment valve 29. Reference numeral 30 denotes a thermistor that detects the temperature of hot water flowing out from the water flow path 15B of the second water refrigerant heat exchanger 15.

前記貯湯タンク２７には水々熱交換器３１の一次流路３１Ａが循環ポンプ３２を介して接続されている。また、水々熱交換器３１の二次流路３１Ｂには循環ポンプ３３を介して浴槽３４が接続されている。３５は貯湯タンク２７の上部に接続された給湯管であり、この給湯管３５にはミキシングバルブ３６が設けられている。３８は給水管であり、この給水管３８は貯湯タンク２７の下部と前記ミキシングバルブ３６とに分岐接続され、更に開閉弁３９を介して膨張タンク８に接続されている。   A primary flow path 31 </ b> A of the water heat exchanger 31 is connected to the hot water storage tank 27 via a circulation pump 32. A bathtub 34 is connected to the secondary flow path 31 </ b> B of the water heat exchanger 31 via a circulation pump 33. A hot water supply pipe 35 is connected to the upper portion of the hot water storage tank 27, and a mixing valve 36 is provided in the hot water supply pipe 35. A water supply pipe 38 is branched and connected to the lower part of the hot water storage tank 27 and the mixing valve 36, and is further connected to the expansion tank 8 via an on-off valve 39.

なお、前記貯湯タンク２７の容量は例えば３７０リットルであり、この貯湯タンク２７には湯温検出センサＴＳ１、ＴＳ２、ＴＳ３、ＴＳ４、ＴＳ５、ＴＳ６及びＴＳ７が貯湯タンク２７の下部から上部まで間隔を存して設けられ、沸き上げ温度が５５℃のため、前記各センサの検出湯温が５５℃以上の場合には貯湯タンク２７内の上端からその位置までは貯湯されており残湯ありと後述する制御装置Ｓ２が判断する。このとき、検出センサＴＳ１の配置箇所は残湯量が３５０リットル、ＴＳ２が同じく３００リットル、ＴＳ３が２５０リットル、ＴＳ４が２００リットル、ＴＳ５が１５０リットル、ＴＳ６が１００リットル、ＴＳ７が５０リットルの位置である。また、ＷＳ１は前記循環ポンプ２８の出口近くの湯温を検出する湯温検出センサである。   The hot water storage tank 27 has a capacity of, for example, 370 liters, and the hot water storage tank 27 has hot water temperature detection sensors TS1, TS2, TS3, TS4, TS5, TS6 and TS7 spaced from the lower side to the upper side of the hot water storage tank 27. Since the boiling temperature is 55 ° C., when the detected hot water temperature of each sensor is 55 ° C. or higher, the hot water is stored from the upper end in the hot water storage tank 27 to the position, and there will be residual hot water, which will be described later. The control device S2 determines. At this time, the detection sensor TS1 is disposed at a position where the remaining hot water amount is 350 liters, TS2 is also 300 liters, TS3 is 250 liters, TS4 is 200 liters, TS5 is 150 liters, TS6 is 100 liters, and TS7 is 50 liters. . WS1 is a hot water temperature detection sensor for detecting the hot water temperature near the outlet of the circulation pump 28.

そして、消費者は電力会社と時間帯別電灯契約を結んで、料金の安い深夜時間帯では所定の時刻に貯湯量から沸き上げ量、そして全量沸き上げに必要な時間を算出し、沸き上げ終了時刻より前記必要な時間を考慮して逆算した時刻から貯湯運転を開始し、全量沸き上げ終了（湯温検出センサＷＳ１の検出温度が５５℃以上）次第停止するように制御装置Ｓ２により制御されると共に、それ以外の時間帯では残湯量が１００リットルを割ったら貯湯運転を開始し、１５０リットル以上になったらこの貯湯運転を停止するように制御装置Ｓ２が制御する。   And the consumer signs a lighting contract according to the time with the electric power company, calculates the amount of water to be heated from the amount of hot water stored at a predetermined time and the time required to boil up the total amount at a predetermined time in the low-night time period when the fee is low, and the heating ends The hot water storage operation is started from the time calculated backward from the time in consideration of the necessary time, and is controlled by the control device S2 so as to stop as soon as the whole amount has been heated (the detected temperature of the hot water temperature detection sensor WS1 is 55 ° C. or higher). At the same time, the hot water storage operation is started when the remaining hot water volume is less than 100 liters, and the control device S2 controls to stop the hot water storage operation when the remaining hot water volume exceeds 150 liters.

また、ヒートポンプユニットＡとタンクユニットＢには、それぞれマイクロコンピュータ等から成る制御装置Ｓ１、Ｓ２が設けられている。この制御装置Ｓ１、Ｓ２は床暖房リモコン３、４、お風呂場に設けられた風呂リモートコントローラ（以下、「風呂リモコン」という）４０、台所に設けられた台所リモートコントローラ（以下、「台所リモコン」という）４１や浴室暖房用のファンコイル２２からの運転信号や温度信号と、サーミスタ２０、２６、３０の温度信号とに応じて、圧縮機１１の運転と周波数制御、循環ポンプ７、２８の運転制御、熱動弁５、６、２５、第１開閉弁１３及び第２開閉弁１６の開閉制御、膨張弁１４、１７の開度制御、流量調整弁２１、２９の開度制御などを行うものであり、以下その動作を説明する。   Further, the heat pump unit A and the tank unit B are provided with control devices S1 and S2 each composed of a microcomputer or the like. The control devices S1 and S2 include floor heating remote controllers 3 and 4, a bath remote controller (hereinafter referred to as “bath remote controller”) 40 provided in the bathroom, and a kitchen remote controller (hereinafter referred to as “kitchen remote controller”) provided in the kitchen. The operation and frequency control of the compressor 11 and the operation of the circulation pumps 7 and 28 according to the operation signal and temperature signal from the fan coil 22 for heating 41 and the bathroom, and the temperature signal of the thermistors 20, 26 and 30. Control, thermal valve 5, 6, 25, opening / closing control of first opening / closing valve 13 and second opening / closing valve 16, opening control of expansion valves 14, 17 and opening control of flow rate adjusting valves 21, 29, etc. The operation will be described below.

〈床暖房運転〉
床暖房パネル１による床暖房を行う場合、その部屋の壁面等に取り付けられた床暖房リモコン３の運転スイッチをオンにする。すると、制御装置Ｓ２はこれに対応した熱動弁５を開くように制御すると共に循環ポンプ７を運転させ、第１温水循環路Ｃ１では、膨張タンク８→循環ポンプ７→第１水冷媒熱交換器９の水流路９Ｂ→流量調整弁２１→熱動弁５→床暖房パネル１→膨張タンク８の順に温水が流れる。なお、バイパス管１０は、熱動弁５が開くのに時間がかかり、また熱動弁５が故障している場合でも対応できるように、温水の一部をバイパスさせるものであり、微少量の温水が流れる。 <Floor heating operation>
When performing floor heating by the floor heating panel 1, the operation switch of the floor heating remote controller 3 attached to the wall surface of the room is turned on. Then, the control device S2 controls to open the corresponding thermal valve 5 and operates the circulation pump 7. In the first hot water circulation path C1, the expansion tank 8 → the circulation pump 7 → the first water refrigerant heat exchange. The hot water flows in the order of the water flow path 9B of the vessel 9 → the flow rate adjusting valve 21 → the thermal valve 5 → the floor heating panel 1 → the expansion tank 8. It should be noted that the bypass pipe 10 bypasses a part of the hot water so that it takes time to open the thermal valve 5 and can cope with the case where the thermal valve 5 is broken. Hot water flows.

また、前記床暖房リモコン３の運転スイッチをオンにした際に、制御装置Ｓ１はヒートポンプユニットＡの圧縮機１１を運転させ、第１開閉弁１３及び第１膨張弁１４を開くように制御し、冷媒回路Ｒでは、圧縮機１１→第１開閉弁１３→暖房用の第１水冷媒熱交換器９の冷媒流路９Ａ→内部熱交換器１２の一次流路１２Ａ→第１膨張弁１４→空気熱交換器１８→内部熱交換器１２のニ次流路１２Ｂ→アキュムレーター１９→圧縮機１１の順に冷媒が流れる。このとき、貯湯は行われないので、第２開閉弁１６及び第２膨張弁１７は閉じている。   Further, when the operation switch of the floor heating remote controller 3 is turned on, the control device S1 controls the compressor 11 of the heat pump unit A to operate and opens the first on-off valve 13 and the first expansion valve 14, In the refrigerant circuit R, the compressor 11 → the first on-off valve 13 → the refrigerant flow path 9A of the first water refrigerant heat exchanger 9 for heating → the primary flow path 12A of the internal heat exchanger 12 → the first expansion valve 14 → air The refrigerant flows in the order of the heat exchanger 18 → the secondary flow path 12 </ b> B of the internal heat exchanger 12 → the accumulator 19 → the compressor 11. At this time, since hot water is not stored, the second on-off valve 16 and the second expansion valve 17 are closed.

前記床暖房パネル１に供給される温水の温度は６０〜７０℃であるが、サーミスタ２０が検知する温水温度がこの温度になるように圧縮機１１の周波数制御、第１膨張弁１４の弁開度制御及び流量調整弁２１の弁開度制御が制御装置Ｓ１により行われる。   The temperature of the hot water supplied to the floor heating panel 1 is 60 to 70 ° C. The frequency control of the compressor 11 and the opening of the first expansion valve 14 are performed so that the hot water temperature detected by the thermistor 20 becomes this temperature. The degree control and the valve opening degree control of the flow rate adjusting valve 21 are performed by the control device S1.

また、床暖房制御は、床暖房リモコン３に搭載された室温サーミスタ（図示せず）により室温を検知し、設定温度と室温との偏差に基づき熱動弁５を開閉制御し、床暖房パネル１への温水量を制御装置Ｓ２が制御することにより行われる。   Further, in the floor heating control, a room temperature thermistor (not shown) mounted on the floor heating remote controller 3 detects the room temperature, and controls the opening and closing of the thermal valve 5 based on the deviation between the set temperature and the room temperature. This is done by controlling the amount of hot water to the control device S2.

また、床暖房パネル２で同時に床暖房を行う場合、床暖房リモコン４の運転スイッチをオンにすることにより、同様に熱動弁６が開閉制御され、床暖房パネル１及び２に同時に温水が供給され、床暖房パネル１及び２への温水量を個別に制御することにより、床暖房の個別制御が可能となっている。   When floor heating is simultaneously performed by the floor heating panel 2, the operation valve of the floor heating remote controller 4 is turned on to similarly control the opening and closing of the thermal valve 6 so that hot water is simultaneously supplied to the floor heating panels 1 and 2. In addition, by individually controlling the amount of hot water to the floor heating panels 1 and 2, it is possible to individually control the floor heating.

このような床暖房運転を行う場合、床暖房する部屋が暖まってくると、床暖房パネル１、２からの放熱量が小さくなり、膨張タンク８から水冷媒熱交換器９の水流路９Ｂへは５０〜６０℃の温水が供給されることとなる。このため、水冷媒熱交換器９ではそれほど熱交換されず、冷媒温度も高温となって圧縮機１１に負荷がかかる。このような場合の冷媒の冷却機構として設けたのが内部熱交換器１２であり、内部熱交換器１２の一次流路１２Ａでの放熱分は同じ冷媒回路Ｒにある内部熱交換器１２の二次流路１２Ｂで再度吸収されるため、無駄なく、効率を落とすことなく、冷媒回路Ｒを構成できる。   When such a floor heating operation is performed, when the floor heating room is warmed, the amount of heat released from the floor heating panels 1 and 2 is reduced, and the expansion tank 8 to the water flow path 9B of the water refrigerant heat exchanger 9 50-60 degreeC warm water will be supplied. For this reason, the water / refrigerant heat exchanger 9 does not exchange much heat, the refrigerant temperature becomes high, and the compressor 11 is loaded. The internal heat exchanger 12 is provided as a cooling mechanism for the refrigerant in such a case, and the heat radiation in the primary flow path 12A of the internal heat exchanger 12 is two of the internal heat exchanger 12 in the same refrigerant circuit R. Since it is absorbed again by the next flow path 12B, the refrigerant circuit R can be configured without waste and without reducing the efficiency.

〈浴室暖房運転〉
ファンコイル２２による浴室暖房を行う場合、浴室暖房リモコン２３の運転スイッチ(図示せず)をオンにする。すると、制御装置Ｓ２がファンコイル２２入口部の熱動弁２４を開かせ、循環ポンプ７を運転させる。第１温水循環路Ｃ１では、膨張タンク８→循環ポンプ７→第１水冷媒熱交換器９の水流路９Ｂ→流量調整弁２１→熱動弁２４→ファンコイル２２→膨張タンク８の順に温水が流れる。バイパス管１０は、前記熱動弁２４が開くのに時間がかかり、また熱動弁２４が故障している場合でも対応できるように、温水の一部をバイパスさせるものであり、微少量の温水が流れる。 <Bathroom heating operation>
When bathroom heating by the fan coil 22 is performed, an operation switch (not shown) of the bathroom heating remote controller 23 is turned on. Then, the control device S2 opens the thermal valve 24 at the inlet of the fan coil 22 and operates the circulation pump 7. In the first hot water circulation path C1, the hot water flows in the order of the expansion tank 8 → circulation pump 7 → water flow path 9B of the first water refrigerant heat exchanger 9 → flow rate adjusting valve 21 → thermal valve 24 → fan coil 22 → expansion tank 8. Flowing. The bypass pipe 10 bypasses a part of hot water so that it takes time to open the thermal valve 24 and can cope with the case where the thermal valve 24 is broken. Flows.

なお、このときヒートポンプユニットＡの動作と冷媒循環は床暖房運転と同様であり、貯湯は行われないので、第２開閉弁１６及び第２膨張弁１７は閉じている。   At this time, the operation of the heat pump unit A and the refrigerant circulation are the same as in the floor heating operation, and no hot water is stored, so the second on-off valve 16 and the second expansion valve 17 are closed.

前記ファンコイル２２に供給される温水の温度は８０℃であるが、そのための温水制御は床暖房運転の場合と同様である。また、浴室暖房制御はファンコイル２２に搭載された室温サーミスタ（図示せず）により室温を検知し、制御装置Ｓ２がファン回転数を制御し、熱動弁２４を開閉制御することにより行われる。   The temperature of the hot water supplied to the fan coil 22 is 80 ° C., and the hot water control for that is the same as in the floor heating operation. The bathroom heating control is performed by detecting the room temperature with a room temperature thermistor (not shown) mounted on the fan coil 22, and the controller S <b> 2 controls the fan rotation speed and controls the opening and closing of the thermal valve 24.

〈床暖房と浴室暖房の同時運転〉
床暖房パネル１、２による床暖房と、ファンコイル２２による浴室暖房を同時に行う場合、それぞれのリモコン３、４、２３の運転スイッチをオンにする。すると、制御装置Ｓ２は熱動弁５、６、２４を開くように制御し、循環ポンプ７を運転させ、第１温水循環路Ｃ１では、膨張タンク８→循環ポンプ７→第１水冷媒熱交換器９の水流路９Ｂ→流量調整弁２１→熱動弁５、６→床暖房パネル１、２→膨張タンク８の順に温水が流れると共に、膨張タンク８→循環ポンプ７→第１水冷媒熱交換器９の水流路９Ｂ→流量調整弁２１→熱動弁２４→ファンコイル２２→膨張タンク８の順に温水が流れる。 <Simultaneous operation of floor heating and bathroom heating>
When floor heating by the floor heating panels 1 and 2 and bathroom heating by the fan coil 22 are performed simultaneously, the operation switches of the respective remote controllers 3, 4 and 23 are turned on. Then, the control device S2 controls to open the thermal valves 5, 6, and 24 to operate the circulation pump 7, and in the first hot water circulation path C1, the expansion tank 8 → the circulation pump 7 → the first water refrigerant heat exchange. The hot water flows in the order of the water flow path 9B → the flow regulating valve 21 → the thermal valves 5 and 6 → the floor heating panels 1 and 2 → the expansion tank 8 and the expansion tank 8 → the circulation pump 7 → the first water refrigerant heat exchange. The hot water flows in the order of the water flow path 9B of the vessel 9 → the flow rate adjusting valve 21 → the thermal valve 24 → the fan coil 22 → the expansion tank 8.

バイパス管１０は、前記熱動弁５、６、２４が開くのに時間がかかり、また、熱動弁５、６、２４が故障している場合でも対応できるように、温水の一部をバイパスさせるものであり、微少量の温水が流れる。   The bypass pipe 10 bypasses part of the hot water so that it takes time to open the thermal valves 5, 6, 24, and can cope with the case where the thermal valves 5, 6, 24 are out of order. A small amount of warm water flows.

このときのサーミスタ２０による温水温度制御は８０℃であるが、これでは床暖房パネル１、２用の温水としては温度が高すぎることになる。これを解決するために、熱動弁２５を開くことで８０℃の温水に膨張タンク８からの中温水を混ぜ、サーミスタ２６にて検知される温水の温度が６０〜７０℃になるように制御装置Ｓ２が制御している。また、中温水を混ぜすぎて低温になった場合は、制御装置Ｓ２は熱動弁２５を閉じるように制御すると共に、サーミスタ２６の検知温度に基づく熱動弁２５の開閉制御を行う。   Although the hot water temperature control by the thermistor 20 at this time is 80 ° C., this is too high as hot water for the floor heating panels 1 and 2. In order to solve this problem, the thermal valve 25 is opened to mix the warm water from the expansion tank 8 with the warm water at 80 ° C., and the temperature of the warm water detected by the thermistor 26 is controlled to 60 to 70 ° C. The device S2 is controlling. In addition, when the temperature is lowered due to excessive mixing of the medium temperature water, the control device S2 performs control to close the thermal valve 25, and performs opening / closing control of the thermal valve 25 based on the temperature detected by the thermistor 26.

ヒートポンプユニットＡの動作と冷媒循環は、床暖房運転又は浴室暖房運転と同様であり、貯湯は行われないので、第２開閉弁１６及び第２膨張弁１７は閉じている。   The operation of the heat pump unit A and the refrigerant circulation are the same as the floor heating operation or the bathroom heating operation, and no hot water is stored, so the second on-off valve 16 and the second expansion valve 17 are closed.

〈貯湯運転〉
料金の安い深夜時間帯では所定の時刻に貯湯量から沸き上げ量、そして全量沸き上げに必要な時間を算出し、沸き上げ終了時刻より前記必要な時間を考慮して逆算した時刻から貯湯運転が開始される。また、それ以外の時間帯では残湯量が１００リットルを割ったら、即ち検出センサＴＳ６が湯温５５℃未満を検出した場合には、貯湯運転が開始される。 <Hot water storage operation>
In late night hours when the price is low, calculate the amount of water to be heated from the amount of hot water stored at a predetermined time, and the time required to boil up the entire amount, and hot water storage operation starts from the time calculated in reverse from the boiling end time taking into account the required time. Be started. In addition, when the remaining hot water volume is less than 100 liters in other time zones, that is, when the detection sensor TS6 detects that the hot water temperature is less than 55 ° C., the hot water storage operation is started.

即ち、前記検出センサからの検出出力に基づいて、貯湯タンク２７に貯湯が行なわれ、制御装置Ｓ２は循環ポンプ２８を運転させ、第２温水循環路Ｃ２では、貯湯タンク２７→循環ポンプ２８→第２水冷媒熱交換器１５の水流路１５Ｂ→流量調整弁２９→貯湯タンク２７の順に給湯用の温水が流れ、貯湯タンク２７に貯湯される。   That is, hot water is stored in the hot water storage tank 27 based on the detection output from the detection sensor, and the control device S2 operates the circulation pump 28. In the second hot water circulation path C2, the hot water storage tank 27 → the circulation pump 28 → the second Hot water for hot water supply flows in the order of the water flow path 15 B of the two-water refrigerant heat exchanger 15 → the flow rate adjustment valve 29 → the hot water storage tank 27, and is stored in the hot water storage tank 27.

ヒートポンプユニットＡでは制御装置Ｓ１により圧縮機１１が運転すると共に第２開閉弁１６が開き、冷媒回路Ｒでは、圧縮機１１→第２開閉弁１６→第２水冷媒熱交換器１５の冷媒流路１５Ａ→第２膨張弁１７→空気熱交換器１８→内部熱交換器１２のニ次流路１２Ｂ→アキュムレーター１９→圧縮機１１の順に冷媒が流れる。このとき、暖房は行われないので、第１開閉弁１３及び第１膨張弁１４は閉じている。また、内部熱交換器１２の二次流路１２Ｂでは冷媒がただ通過するだけで、他に影響を及ぼすことはない。   In the heat pump unit A, the compressor 11 is operated by the control device S1 and the second on-off valve 16 is opened. In the refrigerant circuit R, the refrigerant flow path of the compressor 11 → the second on-off valve 16 → the second water refrigerant heat exchanger 15 The refrigerant flows in the order of 15A → second expansion valve 17 → air heat exchanger 18 → secondary flow path 12B of the internal heat exchanger 12 → accumulator 19 → compressor 11. At this time, since heating is not performed, the first on-off valve 13 and the first expansion valve 14 are closed. Further, the refrigerant simply passes through the secondary flow path 12B of the internal heat exchanger 12, and the other is not affected.

貯湯タンク２７へ供給される温水温度は９０℃であるが、サーミスタ３０が検知する温度がこの温度になるように、制御装置Ｓ１により圧縮機１１の周波数制御、第２膨張弁１７の弁開度制御、流量調整弁２９の弁開度制御が行われる。   The temperature of the hot water supplied to the hot water storage tank 27 is 90 ° C., but the control device S1 controls the frequency of the compressor 11 and the valve opening of the second expansion valve 17 so that the temperature detected by the thermistor 30 becomes this temperature. Control and valve opening control of the flow rate adjusting valve 29 are performed.

貯湯タンク２７に貯湯された高温水はミキシングバルブ３６にて適度な温度に調整され、給湯管３５から台所やシャワーへの給湯や浴槽３４へのお湯張り等に利用される。そして、給湯が行われると、給水管３８から貯湯タンク２７に給水が行われる。また、循環ポンプ３２、３３を運転することにより、貯湯タンク２７の高温水と浴槽３４の温水を水々熱交換器３１で熱交換し、浴槽３４の温水の追い焚きを行うこともできる。   The hot water stored in the hot water storage tank 27 is adjusted to an appropriate temperature by the mixing valve 36 and used for hot water supply from the hot water supply pipe 35 to the kitchen or shower, hot water filling to the bathtub 34, and the like. When hot water is supplied, water is supplied from the water supply pipe 38 to the hot water storage tank 27. In addition, by operating the circulation pumps 32 and 33, the hot water in the hot water storage tank 27 and the hot water in the bathtub 34 can be exchanged with the water heat exchanger 31, and the hot water in the bathtub 34 can be replenished.

そして、前記深夜時間帯では全量沸き上げが終了した場合（湯温検出センサＷＳ１が５５℃以上を検出した場合）、またそれ以外の時間帯では残湯量が１５０リットル以上となったら、即ち検出センサＴＳ５が５５℃以上を検出した場合には、貯湯運転が停止されるように制御装置Ｓ１及びＳ２が制御する。   When the boiling of the whole amount is completed in the midnight time zone (when the hot water temperature detection sensor WS1 detects 55 ° C. or more), and when the remaining hot water amount is 150 liters or more in other time zones, that is, the detection sensor When TS5 detects 55 degreeC or more, control apparatus S1 and S2 control so that a hot water storage driving | operation is stopped.

〈暖房と貯湯の同時運転〉
この場合の暖房用温水の循環経路と貯湯用の温水の循環経路は上述したとおりである。冷媒回路Ｒでは、圧縮機１１→第１開閉弁１３→第１水冷媒熱交換器９の冷媒流路９Ａ→内部熱交換器１２の一次流路１２Ａ→第１膨張弁１４→空気熱交換器１８→内部熱交換器１２の二次流路１２Ｂ→アキュムレーター１９→圧縮機１１の順に冷媒が流れると共に、圧縮機１１→第２開閉弁１６→第２水冷媒熱交換器１５の冷媒流路１５Ａ→第２膨張弁１７→空気熱交換器１８→内部熱交換器１２の二次流路１２Ｂ→アキュムレーター１９→圧縮機１１の順に冷媒が流れる。 <Simultaneous operation of heating and hot water storage>
In this case, the circulation path of the hot water for heating and the circulation path of the hot water for hot water storage are as described above. In the refrigerant circuit R, the compressor 11 → the first on-off valve 13 → the refrigerant flow path 9A of the first water refrigerant heat exchanger 9 → the primary flow path 12A of the internal heat exchanger 12 → the first expansion valve 14 → the air heat exchanger. 18 → Secondary flow path 12B of internal heat exchanger 12 → Accumulator 19 → Compressor 11 In this order, the refrigerant flows, and compressor 11 → second on-off valve 16 → refrigerant flow path of second water refrigerant heat exchanger 15 The refrigerant flows in the order of 15A → second expansion valve 17 → air heat exchanger 18 → secondary flow path 12B of the internal heat exchanger 12 → accumulator 19 → compressor 11.

また、サーミスタ２０、２６、３０においてそれぞれ上述した目標温度になるように、圧縮機１１の周波数制御、第１膨張弁１４及び第２膨張弁１７の弁開度制御、流量調整弁２１、２９の弁開度制御が制御装置Ｓ１及びＳ２により行われる。基本的には、膨張弁１４、１７の制御により、第１分岐路（暖房側）Ｐ１と第２分岐路Ｐ２（貯湯側）とに１：１の割合で冷媒を配分し、同時運転が行われた場合でも、暖房側と貯湯側とで十分な能力が得られるようにしてある。   Further, the frequency control of the compressor 11, the valve opening control of the first expansion valve 14 and the second expansion valve 17, and the flow rate adjustment valves 21, 29 of the thermistors 20, 26, 30 are set to the target temperatures described above. The valve opening degree control is performed by the control devices S1 and S2. Basically, the refrigerant is distributed at a ratio of 1: 1 between the first branch path (heating side) P1 and the second branch path P2 (hot water storage side) under the control of the expansion valves 14 and 17, and the simultaneous operation is performed. Even if it is broken, sufficient capacity can be obtained on the heating side and the hot water storage side.

ここで、前述したような暖房と貯湯の同時運転から暖房の単独運転又は貯湯の単独運転に切り替った場合の動作について、図２のフローチャートに基づいて説明する。   Here, the operation when the simultaneous operation of heating and hot water storage as described above is switched to the single operation of heating or the single operation of hot water storage will be described based on the flowchart of FIG.

先ず、前述したように、前記深夜時間帯では全量沸き上げ終了を認識（全量沸き上げ終了を検出、即ち湯温検出センサＷＳ１が５５℃以上を検出）した場合には、またそれ以外の時間帯では検出センサＴＳ５が５５℃以上を検出した場合には、これらの検出センサの出力に基づいて、貯湯運転が停止されるように制御装置Ｓ１、Ｓ２が制御するが、制御装置Ｓ２が所定の検出センサからの５５℃以上の検出出力を入力するか、床暖房リモコン３、４、浴室暖房リモコン２３からの全ての運転停止信号を入力すると、その検出出力か全ての運転停止信号かを制御装置Ｓ１に伝達する。   First, as described above, in the midnight time zone, when the end of the total amount boiling is recognized (the end of the total amount boiling is detected, that is, the hot water temperature detection sensor WS1 detects 55 ° C. or more), the other time zone Then, when the detection sensor TS5 detects 55 ° C. or higher, the control devices S1 and S2 control the hot water storage operation to be stopped based on the outputs of these detection sensors. When the detection output of 55 ° C. or more from the sensor is input, or when all the operation stop signals from the floor heating remote controllers 3 and 4 and the bathroom heating remote controller 23 are input, the control device S1 determines whether the detection output is all the operation stop signals. To communicate.

そして、制御装置Ｓ１ではその検出出力か全ての運転停止信号が伝達されると、それが貯湯停止命令か暖房停止命令かの判別を行なう。暖房停止命令と判別した場合には、暖房用の第１開閉弁１３が現在開いているか否かを制御装置Ｓ１が判断し、閉じている場合にはそのまま閉じた状態を維持し、開いている場合には図示しないタイマによる所定時間経過後、例えば１０秒間経過後にこの第１開閉弁１３を閉じるように制御装置Ｓ１が制御する。   Then, when the detected output or all the operation stop signals are transmitted, the control device S1 determines whether it is a hot water storage stop command or a heating stop command. If it is determined that the heating stop command has been issued, the control device S1 determines whether or not the heating first on-off valve 13 is currently open. If it is closed, the control device S1 maintains the closed state and opens it. In this case, the control device S1 controls the first on-off valve 13 to close after a predetermined time elapses by a timer (not shown), for example, after 10 seconds.

また、前述したように、制御装置Ｓ１で貯湯停止命令か暖房停止命令かの判別を行ない、貯湯停止命令と判別した場合には、貯湯用の第２開閉弁１６が現在開いているか否かを制御装置Ｓ１が判断し、閉じている場合にはそのまま閉じた状態を維持し、開いている場合には図示しないタイマによる所定時間経過後、例えば１０秒間経過後にこの第２開閉弁１６を閉じるように制御装置Ｓ１が制御する。   Further, as described above, the control device S1 determines whether the hot water storage stop command or the heating stop command is received. If it is determined that the hot water storage stop command is received, it is determined whether or not the hot water second opening / closing valve 16 is currently open. When the control device S1 determines and closes, the closed state is maintained as it is, and when it is open, the second on-off valve 16 is closed after elapse of a predetermined time by a timer (not shown), for example, after 10 seconds. The control device S1 controls.

なお、前記両タイマは、制御装置Ｓ１であるマイクロコンピュータに設けてもよい。更には、第１開閉弁１３に関係するタイマと、第２開閉弁１６に関係するタイマとを１つのタイマで兼用してもよい。   The two timers may be provided in a microcomputer that is the control device S1. Furthermore, the timer related to the first on-off valve 13 and the timer related to the second on-off valve 16 may be combined with one timer.

以上のように、暖房と貯湯の同時運転が行なわれている場合に、いずれかの運転を停止する場合には、対応する第１開閉弁１３又は第２開閉弁１６を直ちに閉じるのではなく、所定時間経過後に対応する第１開閉弁１３又は第２開閉弁１６を閉じるように制御する。   As described above, when simultaneous operation of heating and hot water storage is being performed, when any operation is stopped, the corresponding first on-off valve 13 or second on-off valve 16 is not immediately closed, Control is performed so that the corresponding first on-off valve 13 or second on-off valve 16 is closed after a predetermined time has elapsed.

従って、従来のように、暖房用の第１開閉弁又は貯湯用の第２開閉弁をそれぞれ暖房用の第１水冷媒熱交換器９又は貯湯用の第２水冷媒熱交換器１５の下流側に配設した場合には、運転しない暖房用の第１開閉弁又は貯湯用の第２開閉弁が閉じると、暖房用の第１水冷媒熱交換器９又は貯湯用の第２水冷媒熱交換器１５に凝縮された冷媒が溜まって、熱交換されてしまって、ヒートポンプユニットＡの能力低下を招く問題があったが、本実施形態のように暖房用の第１開閉弁１３又は貯湯用の第２開閉弁１６をそれぞれ暖房用の第１水冷媒熱交換器９又は貯湯用の第２水冷媒熱交換器１５の上流側に配設した場合には、運転しない暖房用の第１開閉弁１３又は貯湯用の第２開閉弁１６が閉じても、暖房用の第１水冷媒熱交換器９又は貯湯用の第２水冷媒熱交換器１５に凝縮された冷媒が溜まるのが極力防止され、ヒートポンプユニットの能力低下を防止できて、効率的に能力を安定させることができる。   Therefore, as in the prior art, the first on-off valve for heating or the second on-off valve for hot water storage is provided downstream of the first water refrigerant heat exchanger 9 for heating or the second water refrigerant heat exchanger 15 for hot water storage, respectively. When the first on-off valve for heating or the second on-off valve for hot water storage that is not operated is closed, the first water refrigerant heat exchanger 9 for heating or the second water refrigerant heat exchange for hot water storage is closed. There is a problem that the refrigerant condensed in the condenser 15 is accumulated and heat is exchanged to cause a reduction in the capacity of the heat pump unit A. However, as in the present embodiment, the first on-off valve 13 for heating or the hot water storage When the second on-off valve 16 is disposed upstream of the first water refrigerant heat exchanger 9 for heating or the second water refrigerant heat exchanger 15 for hot water storage, the first on-off valve for heating that is not operated. 13 or the second on-off valve 16 for hot water storage is closed, the first water refrigerant heat exchanger 9 for heating or the hot water storage 2 The water-refrigerant heat exchanger 15 condensed refrigerant in accumulation is prevented as much as possible, can be prevented the degradation capacity of the heat pump unit, the efficient ability can be stabilized.

しかも、暖房と貯湯の同時運転が行なわれている場合に、いずれかの運転を停止する場合には、対応する第１開閉弁１３又は第２開閉弁１６を直ちに閉じるのではなく、所定時間経過後に対応する第１開閉弁１３又は第２開閉弁１６を閉じるように制御するから、冷媒の流通を安定化でき、圧力の上昇を防止することができる。   In addition, when both heating and hot water storage operations are performed, if any operation is stopped, the corresponding first on-off valve 13 or second on-off valve 16 is not immediately closed, but a predetermined time has elapsed. Since control is performed so as to close the first on-off valve 13 or the second on-off valve 16 corresponding later, the flow of the refrigerant can be stabilized and an increase in pressure can be prevented.

以上本発明の実施態様について説明したが、上述の説明に基づいて当業者にとって種々の代替例、修正又は変形が可能であり、本発明の趣旨を逸脱しない範囲で前述の種々の代替例、修正又は変形を包含するものである。   Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the various alternatives and modifications described above are within the scope of the present invention. Or a modification is included.

ヒートポンプ式給湯暖房装置の全体系統図である。It is a whole system diagram of a heat pump type hot water supply and heating device. フローチャート図である。It is a flowchart figure.

符号の説明Explanation of symbols

１、２ 床暖房パネル（温水暖房器）
９ 第１水冷媒熱交換器
１１ 圧縮機
１２ 内部熱交換器
１３ 第１開閉弁
１５ 第２水冷媒熱交換器
１６ 第２開閉弁
１４ 第１膨張弁（減圧装置）
１７ 第２膨張弁（減圧装置）
２２ ファンコイル
２７ 貯湯タンク
Ｃ１ 第１温水循環路
Ｃ２ 第２温水循環路
１８ 空気熱交換器
Ｐ１ 第１分岐路
Ｐ２ 第２分岐路
Ｒ 冷媒回路 1, 2 Floor heating panel (hot water heater)
DESCRIPTION OF SYMBOLS 9 1st water refrigerant | coolant heat exchanger 11 Compressor 12 Internal heat exchanger 13 1st on-off valve 15 2nd water-refrigerant heat exchanger 16 2nd on-off valve 14 1st expansion valve (pressure reduction apparatus)
17 Second expansion valve (pressure reduction device)
22 Fan coil 27 Hot water storage tank C1 1st warm water circulation path C2 2nd warm water circulation path 18 Air heat exchanger P1 1st branch path P2 2nd branch path R Refrigerant circuit

Claims (4)

能力調整可能な圧縮機と、暖房用の第１開閉弁、暖房用の第１水冷媒熱交換器及び第１減圧装置よりなる第１分岐路と貯湯用の第２開閉弁、貯湯用の第２水冷媒熱交換器及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを備えたことを特徴とするヒートポンプ式給湯暖房装置。 A compressor capable of adjusting capacity, a first on-off valve for heating, a first water refrigerant heat exchanger for heating, a first branch passage comprising a first pressure reducing device, a second on-off valve for hot water storage, and a first one for hot water storage A parallel circuit of a two-water refrigerant heat exchanger and a second branch consisting of a second pressure reducing device and an air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit, and the first water-refrigerant heat exchanger A first hot water circulation path for circulating hot water between the hot water heater and a second hot water circulation path for circulating hot water between the second water refrigerant heat exchanger and the hot water storage tank. Heat pump type hot water supply and heating system. 能力調整可能な圧縮機と、暖房用の第１開閉弁、暖房用の第１水冷媒熱交換器及び第１減圧装置よりなる第１分岐路と貯湯用の第２開閉弁、貯湯用の第２水冷媒熱交換器及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と床暖房パネル等の温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを形成し、貯湯運転と暖房運転との同時運転から貯湯運転か暖房運転かを停止する際に停止する方に対応する前記第１開閉弁又は第２開閉弁を一定時間経過後に閉じるように制御する制御装置を設けたことを特徴とするヒートポンプ式給湯暖房装置。 A compressor capable of adjusting capacity, a first on-off valve for heating, a first water refrigerant heat exchanger for heating, a first branch passage comprising a first pressure reducing device, a second on-off valve for hot water storage, and a first one for hot water storage A parallel circuit of a two-water refrigerant heat exchanger and a second branch consisting of a second pressure reducing device and an air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit, and the first water-refrigerant heat exchanger A first hot water circuit that circulates hot water between the hot water heater such as a floor heating panel, and a second hot water circuit that circulates hot water between the second water refrigerant heat exchanger and the hot water storage tank. The first on-off valve or the second on-off valve corresponding to the one that stops when the hot water storage operation and the heating operation are stopped from the simultaneous operation of the hot water storage operation and the heating operation is controlled to be closed after a predetermined time has elapsed. A heat pump type hot water supply / room heating device characterized by comprising a control device. 能力調整可能な圧縮機と、暖房用の第１開閉弁、暖房用の第１水冷媒熱交換器及び第１減圧装置よりなる第１分岐路と貯湯用の第２開閉弁、貯湯用の第２水冷媒熱交換器及び第２減圧装置よりなる第２分岐路との並列回路と、空気熱交換器とを順次環状に接続して冷媒回路を形成すると共に、前記第１水冷媒熱交換器と床暖房パネル等の温水暖房器との間で温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で温水を循環させる第２温水循環路とを形成し、貯湯運転と暖房運転との同時運転から貯湯運転か暖房運転かを停止する際の停止信号を受けてから時間を計時するタイマと、このタイマによる所定時間経過後に停止信号に対応する前記第１開閉弁又は第２開閉弁を閉じるように制御する制御装置を設けたことを特徴とするヒートポンプ式給湯暖房装置。 A compressor capable of adjusting capacity, a first on-off valve for heating, a first water refrigerant heat exchanger for heating, a first branch passage comprising a first pressure reducing device, a second on-off valve for hot water storage, and a first one for hot water storage A parallel circuit of a two-water refrigerant heat exchanger and a second branch consisting of a second pressure reducing device and an air heat exchanger are sequentially connected in an annular manner to form a refrigerant circuit, and the first water-refrigerant heat exchanger A first hot water circuit that circulates hot water between the hot water heater such as a floor heating panel, and a second hot water circuit that circulates hot water between the second water refrigerant heat exchanger and the hot water storage tank. Forming a timer for measuring time after receiving a stop signal when stopping hot water storage operation or heating operation from simultaneous operation of hot water storage operation and heating operation, and corresponding to the stop signal after a predetermined time by this timer A control device for controlling the first on-off valve or the second on-off valve to close is provided. Heat pump water heater heating system, wherein the door. 前記冷媒回路の第１分岐路の第１水冷媒熱交換器から流出した冷媒と前記空気熱交換器から流出した冷媒との熱交換を行う熱交換器を備えたことを特徴とする請求項１乃至３のいずれかに記載のヒートポンプ式給湯暖房装置。 The heat exchanger which performs heat exchange with the refrigerant | coolant which flowed out from the 1st water refrigerant | coolant heat exchanger of the 1st branch of the said refrigerant circuit, and the refrigerant | coolant which flowed out of the said air heat exchanger was provided. The heat pump type hot water supply / room heating device according to any one of claims 1 to 3.
JP2004054519A 2004-02-27 2004-02-27 Heat pump water heater / heater Expired - Fee Related JP4148909B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007232232A (en) * 2006-02-27 2007-09-13 Sanyo Electric Co Ltd Cooling/heating device
JP2008304167A (en) * 2007-06-11 2008-12-18 Panasonic Corp Hot-water supply facility for multiple dwelling house
JP2012233685A (en) * 2012-07-19 2012-11-29 Mitsubishi Electric Corp Water heater
CN103403457A (en) * 2010-12-15 2013-11-20 罗伯特·博世有限公司 Method for operating a heat pump device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007232232A (en) * 2006-02-27 2007-09-13 Sanyo Electric Co Ltd Cooling/heating device
US7784297B2 (en) 2006-02-27 2010-08-31 Sanyo Electric Co., Ltd. Cooling heating device
JP4592617B2 (en) * 2006-02-27 2010-12-01 三洋電機株式会社 Cooling and heating device
JP2008304167A (en) * 2007-06-11 2008-12-18 Panasonic Corp Hot-water supply facility for multiple dwelling house
CN103403457A (en) * 2010-12-15 2013-11-20 罗伯特·博世有限公司 Method for operating a heat pump device
CN103403457B (en) * 2010-12-15 2016-04-06 罗伯特·博世有限公司 For the method that heat pump assembly runs
JP2012233685A (en) * 2012-07-19 2012-11-29 Mitsubishi Electric Corp Water heater

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