JP2013130343A - Heat pump water heater - Google Patents
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- JP2013130343A JP2013130343A JP2011280789A JP2011280789A JP2013130343A JP 2013130343 A JP2013130343 A JP 2013130343A JP 2011280789 A JP2011280789 A JP 2011280789A JP 2011280789 A JP2011280789 A JP 2011280789A JP 2013130343 A JP2013130343 A JP 2013130343A
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Abstract
Description
本発明はヒートポンプ給湯装置に関し、特にヒートポンプ回路の凝縮器の外周を覆う断熱材の固定構造を簡単化したヒートポンプ給湯装置に関する。 The present invention relates to a heat pump hot water supply apparatus, and more particularly to a heat pump hot water supply apparatus that simplifies the fixing structure of a heat insulating material that covers the outer periphery of a condenser of a heat pump circuit.
従来、貯湯式給湯装置の熱源機としてヒートポンプを利用したヒートポンプ給湯装置が実用に供されている。このヒートポンプ給湯装置は、温水を貯留する大容量の貯湯タンクと、ケースに収容されたヒートポンプ回路を有するヒートポンプ式の熱源機とを備え、夜間割引の安価な電力を利用して、貯湯タンク内の湯水を循環させて熱源機で加熱して、その加熱された湯水を貯湯タンクに貯留しておき、蛇口や風呂などの所望の給湯先に給湯するものである。 Conventionally, a heat pump water heater using a heat pump as a heat source device of a hot water storage type hot water supply apparatus has been put to practical use. This heat pump water heater has a large-capacity hot water storage tank for storing hot water and a heat pump type heat source device having a heat pump circuit housed in a case, and uses an inexpensive electric power at night discount to store in the hot water storage tank. Hot water is circulated and heated by a heat source device, and the heated hot water is stored in a hot water storage tank and supplied to a desired hot water supply destination such as a faucet or bath.
上記の熱源機のヒートポンプ回路において、圧縮機、凝縮器、膨張弁、蒸発器が冷媒配管を介して接続され、冷媒配管に封入された冷媒を利用して給湯加熱運転が行われる。給湯加熱運転では、蒸発器に外気を導入する送風機が駆動されて外気から冷媒に吸熱して冷媒を気化し、この気化した冷媒を圧縮機で高温高圧にし、凝縮器により高温高圧の冷媒と湯水との間で熱交換が行われて湯水が加熱される。 In the heat pump circuit of the heat source apparatus, a compressor, a condenser, an expansion valve, and an evaporator are connected via a refrigerant pipe, and a hot water supply heating operation is performed using the refrigerant sealed in the refrigerant pipe. In the hot water supply heating operation, a blower that introduces outside air into the evaporator is driven to absorb heat from the outside air into the refrigerant to vaporize the refrigerant, and the vaporized refrigerant is heated to high temperature and high pressure by the compressor. Heat is exchanged between the two and hot water is heated.
ところで、ケース内における圧縮機、凝縮器、膨張弁、蒸発器の配置構造に関して、例えば、特許文献１の空気調和機のような配置構造がある。具体的には、ケース内を垂直な仕切り板によって、蒸発器や送風機等が配置された送風室と、圧縮機や膨張弁等が配置された機械室とに区画し、ケース内の上端側部分を水平な仕切り板により区画し、この仕切り板の上面側に凝縮器が配置された構造が開示されている。 By the way, regarding the arrangement structure of the compressor, the condenser, the expansion valve, and the evaporator in the case, for example, there is an arrangement structure like the air conditioner of Patent Document 1. Specifically, the inside of the case is partitioned by a vertical partition plate into a blower chamber in which an evaporator, a blower, and the like are arranged, and a machine room in which a compressor, an expansion valve, and the like are arranged, and an upper end side portion in the case Is divided by a horizontal partition plate, and a structure is disclosed in which a condenser is disposed on the upper surface side of the partition plate.
一般的に、凝縮器は保温状態を維持する為に、凝縮器の外周は断熱材によって覆われている。特許文献１では、この断熱材は、箱状断熱部と蓋断熱部からなる上下１対の分割体で構成され、この上下１対の分割体は、１対のコ字形の固定バンドを介して密閉状態となるように水平な仕切り板に固定されている。 Generally, in order to maintain the heat insulation state of the condenser, the outer periphery of the condenser is covered with a heat insulating material. In Patent Document 1, this heat insulating material is composed of a pair of upper and lower divided bodies composed of a box-shaped heat insulating portion and a lid heat insulating portion, and the pair of upper and lower divided bodies are interposed via a pair of U-shaped fixing bands. It is fixed to a horizontal partition so as to be sealed.
ところで、上記のように断熱材は複数の断熱部材から構成されるのが一般的である。凝縮器の保温状態を維持する為に、複数の断熱部材を密閉状に固定することが望ましい。このため、断熱材の全周を覆うように金属製のカバーを被せて固定したり、特許文献１のように断熱材の両端部を１対の固定バンドにより固定する場合がある。 By the way, as above-mentioned, it is common that a heat insulating material is comprised from several heat insulation members. In order to maintain the heat insulating state of the condenser, it is desirable to fix a plurality of heat insulating members in a sealed state. For this reason, a metal cover may be covered and fixed so as to cover the entire circumference of the heat insulating material, or both ends of the heat insulating material may be fixed by a pair of fixing bands as in Patent Document 1.
しかし、上記の断熱材の固定構造では、金属製のカバーや１対の固定バンド等の断熱材を固定する為の専用の固定部材が必要となるので、固定構造が複雑化し、製造コストが高くなる。また、金属製のカバーや１対の固定バンドを組み付ける場合、凝縮器を断熱材で覆った後に、更に固定部材による固定作業が必要となるので手間が掛かる。 However, since the fixing structure for the heat insulating material described above requires a dedicated fixing member for fixing the heat insulating material such as a metal cover or a pair of fixing bands, the fixing structure is complicated and the manufacturing cost is high. Become. Further, when assembling a metal cover or a pair of fixing bands, it takes time and effort since fixing work by a fixing member is required after the condenser is covered with a heat insulating material.
本発明の目的は、凝縮器を覆う断熱材の固定構造を簡単化したヒートポンプ給湯装置を提供すること、断熱材の固定作業に手間が掛からないヒートポンプ給湯装置を提供すること、等である。 An object of the present invention is to provide a heat pump hot water supply apparatus that simplifies the fixing structure of the heat insulating material that covers the condenser, to provide a heat pump hot water supply apparatus that does not require time and effort for fixing the heat insulating material, and the like.
請求項１のヒートポンプ給湯装置は、ケース内に蒸発器と圧縮機と膨張手段と凝縮器とを備え且つこれらを冷媒配管で接続したヒートポンプ給湯装置であって、前記ケースは側板と天板と底板とを備え、前記ケース内の上端側部分は水平な仕切り板により区画され、前記凝縮器を前記仕切り板の上面側に配置したヒートポンプ給湯装置において、前記凝縮器は上下に２分割された断熱材によって覆われ、前記ケースの側板の上端部に内方に傾斜した折り曲げ部が設けられ、前記断熱材のうちの上部断熱材の角部に前記折り曲げ部を当接させて、前記上部断熱材を下方に下部断熱材に押圧して断熱材を密閉状に固定したことを特徴としている。 The heat pump hot water supply apparatus according to claim 1 is a heat pump hot water supply apparatus provided with an evaporator, a compressor, an expansion means, and a condenser in a case and connected by a refrigerant pipe. The case includes a side plate, a top plate, and a bottom plate. A heat pump hot water supply apparatus in which the upper end side portion in the case is partitioned by a horizontal partition plate, and the condenser is disposed on the upper surface side of the partition plate. A bent portion inclined inwardly is provided at an upper end portion of the side plate of the case, the bent portion is brought into contact with a corner portion of the upper insulating material of the heat insulating material, and the upper insulating material is The lower heat insulating material is pressed downward to fix the heat insulating material in a sealed state.
請求項２のヒートポンプ給湯装置は、請求項１の発明において、前記ケースの天板と前記上部断熱材との間には隙間が設けられていることを特徴としている。 The heat pump hot water supply apparatus according to claim 2 is characterized in that, in the invention according to claim 1, a gap is provided between the top plate of the case and the upper heat insulating material.
請求項３のヒートポンプ給湯装置は、請求項１の発明において、前記ケースの天板の外周部から下方へ延びる延長板部を前記側板の上端部分に外嵌させることによって、前記側板を内方に押圧し、前記折り曲げ部を介して前記上部断熱材の角部に下方への押圧力を発生させることを特徴としている。 According to a third aspect of the present invention, there is provided a heat pump hot-water supply apparatus according to the first aspect, wherein an extension plate portion extending downward from the outer peripheral portion of the top plate of the case is externally fitted to the upper end portion of the side plate, thereby Pressing and generating downward pressing force at the corners of the upper heat insulating material through the bent portion.
請求項１の発明によれば、凝縮器は上下に２分割された断熱材によって覆われ、ケースの側板の上端部に内方に傾斜した折り曲げ部が設けられ、断熱材のうちの上部断熱材の角部に折り曲げ部を当接させて、上部断熱材を下方に下部断熱材に押圧して断熱材を密閉状に固定しているので、側板を組み立てると、側板の折り曲げ部により、常に上部断熱材を下方に下部断熱材に押しつけた状態となる。従って、別途専用の固定部材を使用せずとも、断熱材を密閉状に固定することができるので、断熱材の固定構造を簡単化することができる。 According to the first aspect of the present invention, the condenser is covered with a heat insulating material that is divided into two parts in the vertical direction, and an inwardly bent portion is provided at the upper end portion of the side plate of the case. Since the upper insulation is pressed against the lower insulation downward and the insulation is fixed in a sealed manner, the side plate is always assembled by the bent portion of the side plate. It will be in the state which pressed the heat insulating material down to the lower heat insulating material. Therefore, since the heat insulating material can be fixed in a sealed state without using a separate dedicated fixing member, the fixing structure of the heat insulating material can be simplified.
また、断熱材を固定する為に、専用の固定部材を必要としないので、部品点数を削減することができ、製造コストを低減することができる。さらに、側板を組み付けるだけで、断熱材が密閉状に固定されるので、断熱材の固定作業に手間が掛からず組み立て作業をスムーズに行なうことができる。 Further, since a dedicated fixing member is not required to fix the heat insulating material, the number of parts can be reduced, and the manufacturing cost can be reduced. Furthermore, since the heat insulating material is hermetically fixed only by assembling the side plates, the fixing operation of the heat insulating material does not take time and assembly work can be performed smoothly.
請求項２の発明によれば、ケースの天板と上部断熱材との間には隙間が設けられているので、この隙間によって、凝縮器からの熱が天板へ伝達するのを防止することができるため、凝縮器の保温性が向上する。 According to invention of Claim 2, since the clearance gap is provided between the top plate of a case and an upper heat insulating material, it prevents that the heat | fever from a condenser is transmitted to a top plate by this clearance gap. Therefore, the heat retaining property of the condenser is improved.
請求項３の発明によれば、ケースの天板の外周部から下方へ延びる延長板部を側板の上端部分に外嵌させることによって、側板の上端部分を締め付けて内方に押圧し、折り曲げ部を介して上部断熱材の角部に下方への押圧力を発生させるので、下部断熱材と上部断熱材とを確実に固定することができる。 According to the invention of claim 3, the extension plate portion extending downward from the outer peripheral portion of the top plate of the case is externally fitted to the upper end portion of the side plate, whereby the upper end portion of the side plate is tightened and pressed inward, and the bent portion Since the downward pressing force is generated at the corner portion of the upper heat insulating material via the, the lower heat insulating material and the upper heat insulating material can be reliably fixed.
以下、本発明を実施するための形態について実施例に基づいて説明する。 Hereinafter, modes for carrying out the present invention will be described based on examples.
先ず、ヒートポンプ給湯装置１の全体構成について説明する。
図１に示すように、ヒートポンプ給湯装置１は、貯湯タンクユニット２と、ヒートポンプ式の熱源機３と、配管類６，７，８，９ａ，９ｂ，１０と、主制御装置１１等を有する。
First, the whole structure of the heat pump hot water supply apparatus 1 is demonstrated.
As shown in FIG. 1, the heat pump hot water supply device 1 includes a hot water storage tank unit 2, a heat pump heat source unit 3, pipes 6, 7, 8, 9 a, 9 b, 10, a main control device 11, and the like.
次に、貯湯タンクユニット２について説明する。
図１に示すように、貯湯タンクユニット２は、上下両端部に曲面部を有する縦長筒状の外周面を有する貯湯タンク１２と、この貯湯タンク１２の外面側を覆う保温材１３とを備えている。貯湯タンク１２は、熱源機３で加熱された高温の温水を貯留するものであり、耐腐食性に優れたステンレス製の板材で構成されている。
Next, the hot water storage tank unit 2 will be described.
As shown in FIG. 1, the hot water storage tank unit 2 includes a hot water storage tank 12 having a vertically long cylindrical outer peripheral surface having curved portions at both upper and lower ends, and a heat insulating material 13 covering the outer surface side of the hot water storage tank 12. Yes. The hot water storage tank 12 stores high-temperature hot water heated by the heat source device 3, and is made of a stainless steel plate material having excellent corrosion resistance.
貯湯タンク１２の下端部には、水道管などの給水管７と温水循環用配管９ａに接続される下部配管８が接続されている。給水管７を介して水道水を貯湯タンク１２内に補充するようになっている。その貯湯タンク１２から液送ポンプ１６を介して温水（貯留水）が下部配管８、温水循環用配管９ａを通り熱源機３に送られる。熱源機３で加熱された温水は温水循環用配管９ｂへ流れる。 A lower pipe 8 connected to a water supply pipe 7 such as a water pipe and a hot water circulation pipe 9 a is connected to the lower end of the hot water storage tank 12. The tap water is replenished into the hot water storage tank 12 through the water supply pipe 7. Hot water (reserved water) is sent from the hot water storage tank 12 to the heat source unit 3 through the lower pipe 8 and the hot water circulation pipe 9 a via the liquid feed pump 16. The hot water heated by the heat source device 3 flows into the hot water circulation pipe 9b.
貯湯タンク１２の上端部には、温水循環用配管９ｂと出湯用配管６に接続される上部配管１０が接続され、貯湯タンク１２内に貯留された高温の温水（例えば、８０〜９０℃）を上部配管１０に供給することができる。 An upper pipe 10 connected to the hot water circulation pipe 9 b and the hot water supply pipe 6 is connected to the upper end of the hot water storage tank 12, and hot hot water (for example, 80 to 90 ° C.) stored in the hot water storage tank 12 is supplied. It can be supplied to the upper pipe 10.
貯湯タンク１２には、複数の温度センサ３１〜３４が高さ方向所定間隔おきの位置に配置されている。温度センサ３１〜３４は主制御装置１１に接続されており、温度センサ３１〜３４の温度検出信号が主制御装置１１に供給される。 In the hot water storage tank 12, a plurality of temperature sensors 31 to 34 are arranged at predetermined intervals in the height direction. The temperature sensors 31 to 34 are connected to the main controller 11, and temperature detection signals from the temperature sensors 31 to 34 are supplied to the main controller 11.
保温材１３は、例えば、発泡ポリプロピレン、発泡ポリスチレン等の樹脂を発泡成形した発泡断熱材で構成され、貯湯タンク１２の外面側を覆って貯湯タンク１２に貯留された温水の温度低下を防ぐ断熱機能を有する。 The heat insulating material 13 is composed of, for example, a foam heat insulating material obtained by foaming a resin such as expanded polypropylene or expanded polystyrene, and covers the outer surface of the hot water storage tank 12 to prevent a decrease in temperature of the hot water stored in the hot water storage tank 12. Have
外装ケース１４は、薄鋼板製の箱状に形成され、貯湯タンクユニット２、配管類６，７，８，９ａ，９ｂ，１０、液送ポンプ１６、混合弁２７、複数の温度センサ２８〜３０等を収容している。 The outer case 14 is formed in a box shape made of a thin steel plate, and has a hot water storage tank unit 2, pipes 6, 7, 8, 9 a, 9 b, 10, a liquid feed pump 16, a mixing valve 27, and a plurality of temperature sensors 28 to 30. Etc. are accommodated.
ユーザーが給湯操作を行なうと、貯湯タンク１２に貯留された温水が出湯用配管６に流れ、その温水と給水管７から供給される水道水とが混合弁２７で混合され、所定の温度となって蛇口などの給湯栓４に給湯される。混合弁２７の上流部、下流部、給水管７の途中部には、夫々、温水温度又は入水温度を検知するための温度センサ２８〜３０が設けられ、これら温度センサ２８〜３０の検出信号が主制御装置１１に供給されている。主制御装置１１は、これら温度センサ２８〜３０で検知された温度検知データに基づいて、混合弁２７を制御して温水と水の混合比を調節することで給湯する温水の温度を調整する。 When the user performs a hot water supply operation, the hot water stored in the hot water storage tank 12 flows into the hot water supply pipe 6, and the hot water and the tap water supplied from the water supply pipe 7 are mixed by the mixing valve 27 to reach a predetermined temperature. The hot water is supplied to the hot water tap 4 such as a faucet. Temperature sensors 28 to 30 for detecting the hot water temperature or the incoming water temperature are provided in the upstream portion, the downstream portion of the mixing valve 27, and the middle portion of the water supply pipe 7, respectively. It is supplied to the main controller 11. Main controller 11 adjusts the temperature of hot water to be supplied by controlling mixing valve 27 and adjusting the mixing ratio of hot water and water based on the temperature detection data detected by these temperature sensors 28-30.
主制御装置１１は、ユーザーが操作可能な操作リモコン１１ａとの間でデータ通信可能であり、操作リモコン１１ａのスイッチ操作により目標給湯温度が設定されると、その目標給湯温度データが操作リモコン１１ａから主制御装置１１に送信される。主制御装置１１は、給湯動作時には、目標給湯温度データ及び温度センサ３１〜３４からの温度検知データに基づいて、熱源機３で温水を加熱する加熱温度を決定する。 The main controller 11 can communicate data with the operation remote controller 11a that can be operated by the user. When the target hot water temperature is set by the switch operation of the operation remote controller 11a, the target hot water temperature data is transferred from the operation remote controller 11a. It is transmitted to the main controller 11. Main controller 11 determines the heating temperature at which hot water is heated by heat source unit 3 based on target hot water supply temperature data and temperature detection data from temperature sensors 31 to 34 during a hot water supply operation.
次に、ヒートポンプ式の熱源機３について説明する。
図１〜図１０に示すように、熱源機３は、蒸発器としての外気熱吸収用熱交換器１８と、圧縮機２０と、凝縮器としての温水加熱用熱交換器２１と、高圧の冷媒を断熱膨張させて温度と圧力を下げる膨張弁２２とを有し、これら機器１８，２０，２１，２２が冷媒配管２３を介して接続されヒートポンプ回路を構成し、冷媒配管２３に収容された冷媒を利用して給湯加熱運転を行う。
Next, the heat pump type heat source unit 3 will be described.
As shown in FIGS. 1 to 10, the heat source unit 3 includes an outdoor air heat absorption heat exchanger 18 as an evaporator, a compressor 20, a hot water heating heat exchanger 21 as a condenser, and a high-pressure refrigerant. And an expansion valve 22 for adiabatic expansion to reduce the temperature and pressure. These devices 18, 20, 21, and 22 are connected via a refrigerant pipe 23 to form a heat pump circuit, and the refrigerant accommodated in the refrigerant pipe 23 The hot water supply heating operation is performed using.
熱源機３は、さらに送風モータ１９ａで駆動される送風機１９と、主制御装置１１に接続され且つ熱源機３を制御する補助制御装置２４と、これら収納する外装ケース２５等を備えている。 The heat source device 3 further includes a blower 19 driven by a blower motor 19a, an auxiliary control device 24 that is connected to the main control device 11 and controls the heat source device 3, and an exterior case 25 that accommodates these.
次に、外装ケース２５について説明する。
図２〜図９に示すように、外装ケース２５は、薄鋼板製の箱状に形成され、左右１対の側板３５，３６と、前側板３７と、後側板３８と、天板４０と、底板４１とを備えている。外装ケース２５内には、垂直な縦仕切り板４２と水平な横仕切り板４３とが設けられている。縦仕切り板４２と横仕切り板４３も同様に薄鋼板製のものである。
Next, the exterior case 25 will be described.
As shown in FIGS. 2 to 9, the exterior case 25 is formed in a box shape made of a thin steel plate, and a pair of left and right side plates 35, 36, a front side plate 37, a rear side plate 38, a top plate 40, And a bottom plate 41. In the exterior case 25, a vertical vertical partition plate 42 and a horizontal horizontal partition plate 43 are provided. Similarly, the vertical partition plate 42 and the horizontal partition plate 43 are made of thin steel plates.
左右１対の側板３５，３６は、平面視にてＬ字形に夫々構成され、左右対称に設置されている。左右１対の側板３５，３６のうち右側板３６の下側部分には、外側に膨出した形状の膨出部３６ｄが形成されている。この膨出部３６ｄ内には、温水循環用配管９ａ，９ｂと熱交換器通路部２１ａとの接続部が収納されている。 The pair of left and right side plates 35 and 36 are respectively configured in an L shape in plan view, and are installed symmetrically. Of the pair of left and right side plates 35, 36, a lower portion of the right side plate 36 is formed with a bulging portion 36d having a shape bulging outward. A connecting portion between the hot water circulation pipes 9a and 9b and the heat exchanger passage portion 21a is accommodated in the bulging portion 36d.
前側板３７には、外装ケース２５内の空気を排出する空気排出口としての開口部３７ｄが形成され、この開口部３７ｄの前面には金網状のカバー部材３７ｅが設けられている。前側板３７の内面側には空気流をガイドするベルマウス３７ｆが設けられている。送風機１９を駆動すると、後側板３８に形成された大きな矩形状の開口部や左側板３５に形成された複数の横長のスリットから外気が取り込まれ、外気熱吸収用熱交換器１８で冷媒と熱交換されて低温の空気となり、前側の開口部３７ｄから外部に排出される。 The front side plate 37 is formed with an opening 37d as an air discharge port for discharging the air in the exterior case 25, and a metal mesh cover member 37e is provided on the front surface of the opening 37d. A bell mouth 37 f for guiding the air flow is provided on the inner surface side of the front side plate 37. When the blower 19 is driven, outside air is taken in through a large rectangular opening formed in the rear side plate 38 and a plurality of horizontally long slits formed in the left side plate 35, and refrigerant and heat are absorbed by the outside air heat absorption heat exchanger 18. It is exchanged and becomes low-temperature air, and is discharged to the outside from the opening 37d on the front side.
縦仕切り板４２は、底板４１の右側約１／３部分から鉛直に立設され且つ左右１対の側板３５，３６と略平行に設けられている。縦仕切り板４２は、外装ケース２５内を外気熱吸収用熱交換器１８や送風機１９等が配置された左側の送風室４４と、圧縮機２０や膨張弁２２等が配置された右側の機械室４５とに区画している。縦仕切り板４２の上端側部分に、補助制御装置２４が装着されている。 The vertical partition plate 42 is vertically erected from about 右側 of the right side of the bottom plate 41 and is provided substantially in parallel with the pair of left and right side plates 35, 36. The vertical partition plate 42 includes a left blower chamber 44 in which the heat exchanger 18 for absorbing outside air heat, a blower 19 and the like are disposed in the outer case 25, and a right mechanical chamber in which the compressor 20 and the expansion valve 22 are disposed. It is divided into 45. An auxiliary control device 24 is attached to the upper end side portion of the vertical partition plate 42.
送風機１９は、送風モータ１９ａと、この送風モータ１９ａによって回動駆動される３枚の羽根部材１９ｂとを有し、支持金具１９ｃを介して底板４１と横仕切り板４３とに支持されている。圧縮機２０は気相状態の冷媒を断熱圧縮して温度上昇させる公知の密閉型圧縮機である。 The blower 19 includes a blower motor 19a and three blade members 19b that are rotationally driven by the blower motor 19a. The blower 19 is supported by the bottom plate 41 and the horizontal partition plate 43 through a support fitting 19c. The compressor 20 is a known hermetic compressor that adiabatically compresses a refrigerant in a gas phase state to increase the temperature.
横仕切り板４３は、縦仕切り板４２の上側に天板４０と平行に左右方向に延びるように設けられ、外装ケース２５内の上端側部分を区画している。横仕切り板４３は、左右両端部が複数のビスを介して左右側板３５，３６の内側面に固定されている。横仕切り板４３の前後外周壁部には、複数の係合部４３ａが形成され、これら係合部４３ａに支持金具１９ｃの上端部と縦仕切り板４２の上端部とが夫々固定されている。 The horizontal partition plate 43 is provided on the upper side of the vertical partition plate 42 so as to extend in the left-right direction in parallel with the top plate 40, and defines an upper end side portion in the exterior case 25. The horizontal partition plate 43 is fixed to the inner side surfaces of the left and right side plates 35 and 36 at both left and right end portions via a plurality of screws. A plurality of engaging portions 43a are formed on the front and rear outer peripheral wall portions of the horizontal partition plate 43, and the upper end portion of the support fitting 19c and the upper end portion of the vertical partition plate 42 are fixed to the engaging portions 43a, respectively.
外気熱吸収用熱交換器１８は、左側板３５と後側板３８の内面に沿うように平面視Ｌ字状に構成されている。外気熱吸収用熱交換器１８は、冷媒配管２３に含まれる蒸発器通路部１８ａを有し、この蒸発器通路部１８ａは複数のフィンを有し、この外気熱吸収用熱交換器１８において、蒸発器通路部１８ａを流れる冷媒と外気との間で熱交換され、冷媒は外気から吸熱して気化する。 The heat exchanger 18 for absorbing outside air heat is configured in an L shape in plan view so as to follow the inner surfaces of the left side plate 35 and the rear side plate 38. The outside air heat absorption heat exchanger 18 includes an evaporator passage portion 18a included in the refrigerant pipe 23. The evaporator passage portion 18a includes a plurality of fins. In the outside air heat absorption heat exchanger 18, Heat is exchanged between the refrigerant flowing through the evaporator passage portion 18a and the outside air, and the refrigerant absorbs heat from the outside air and vaporizes.
温水加熱用熱交換器２１は、発泡ポリプロピレン、発泡ポリスチレン等の樹脂を発泡成形した発泡断熱材５０（断熱材に相当する）で覆われている。温水加熱用熱交換器２１は、横仕切り板４３の上面側に配置されている。発泡断熱材５０は温水加熱用熱交換器２１が効率良く熱交換する為の断熱機能を有する。尚、発泡断熱材５０の詳細な構成に関しては後述する。 The hot water heating heat exchanger 21 is covered with a foam heat insulating material 50 (corresponding to a heat insulating material) obtained by foaming a resin such as foamed polypropylene or foamed polystyrene. The hot water heating heat exchanger 21 is disposed on the upper surface side of the horizontal partition plate 43. The foam heat insulating material 50 has a heat insulating function for the heat exchanger 21 for warm water heating to efficiently exchange heat. A detailed configuration of the foam heat insulating material 50 will be described later.
温水加熱用熱交換器２１は、熱交換器通路部２１ａと冷媒配管２３の一部となる内部通路２１ｂとを有する銅製の二重管で構成されている。この温水加熱用熱交換器２１において、内部通路２１ｂを流れる冷媒と温水循環用配管９ａから熱交換器通路部２１ａに供給される湯水との間で熱交換され、湯水は加熱され冷媒は冷却され液化する。 The hot water heating heat exchanger 21 is constituted by a copper double pipe having a heat exchanger passage portion 21 a and an internal passage 21 b which is a part of the refrigerant pipe 23. In this hot water heating heat exchanger 21, heat is exchanged between the refrigerant flowing in the internal passage 21b and hot water supplied from the hot water circulation pipe 9a to the heat exchanger passage 21a, and the hot water is heated and the refrigerant is cooled. Liquefaction.
膨張弁２２（膨張手段に相当する）は液相状態の冷媒を断熱膨張させ温度低下させる。この膨張弁２２は絞り量が可変な制御弁からなる。尚、膨張弁２２の代わりに絞り量が一定の膨張弁を採用してもよい。 The expansion valve 22 (corresponding to the expansion means) adiabatically expands the liquid phase refrigerant and lowers the temperature. The expansion valve 22 is a control valve having a variable throttle amount. Instead of the expansion valve 22, an expansion valve having a constant throttle amount may be employed.
冷媒配管２３は、外気熱吸収用熱交換器１８と圧縮機２０間を接続する冷媒配管２３ａ、圧縮機２０と温水加熱用熱交換器２１間を接続する冷媒配管２３ｂ、温水加熱用熱交換器２１と膨張弁２２間を接続する冷媒配管２３ｃ、膨張弁２２と外気熱吸収用熱交換器１８間を接続する冷媒配管２３ｄ等を備えている（図１参照）。 The refrigerant pipe 23 includes a refrigerant pipe 23a that connects between the heat exchanger 18 for absorbing outside air heat and the compressor 20, a refrigerant pipe 23b that connects between the compressor 20 and the heat exchanger 21 for heating hot water, and a heat exchanger for heating hot water. 21 and a refrigerant pipe 23c for connecting the expansion valve 22 and a refrigerant pipe 23d for connecting the expansion valve 22 and the heat exchanger 18 for absorbing outside heat (see FIG. 1).
熱源機３において、圧縮機２０により高圧に圧縮された加熱状態の冷媒は、温水加熱用熱交換器２１に送られ、液送ポンプ１６の駆動により貯湯タンク１２の下端部から下部配管８と温水循環用配管９ａを経て熱交換器通路部２１ａに流入した低温水と熱交換し、加熱された高温水が温水循環用配管９ｂ、上部配管１０を通って貯湯タンクユニット２の貯湯タンク１２に貯留され、熱源機３を経由する加熱動作を繰り返すことで貯湯タンク１２に高温の温水が貯留される。 In the heat source unit 3, the heated refrigerant compressed to a high pressure by the compressor 20 is sent to the hot water heating heat exchanger 21, and the liquid feed pump 16 is driven to drive the lower pipe 8 and the hot water from the lower end of the hot water storage tank 12. Heat is exchanged with the low-temperature water flowing into the heat exchanger passage 21a through the circulation pipe 9a, and the heated high-temperature water is stored in the hot water storage tank 12 of the hot water tank unit 2 through the hot water circulation pipe 9b and the upper pipe 10. The hot water is stored in the hot water storage tank 12 by repeating the heating operation via the heat source device 3.
補助制御装置２４は、主制御装置１１との間でデータ通信可能であり、主制御装置１１からの指令に従って熱源機３の各種機器（送風モータ１９ａ、圧縮機２０等）の駆動制御を行う。温水加熱用熱交換器２１の出口側部分において、温水循環用配管９ｂには、温水温度を検知するための温度センサ２６が設けられ、その検出信号が主制御装置１１に供給されている。補助制御装置２４は、温水の加熱温度が主制御装置１１から指示された温度となるように、熱源機３を作動させる。 The auxiliary control device 24 can perform data communication with the main control device 11, and performs drive control of various devices (the blower motor 19 a, the compressor 20, etc.) of the heat source device 3 according to instructions from the main control device 11. In the outlet side portion of the hot water heating heat exchanger 21, the hot water circulation pipe 9 b is provided with a temperature sensor 26 for detecting the hot water temperature, and the detection signal is supplied to the main controller 11. The auxiliary control device 24 operates the heat source unit 3 so that the heating temperature of the hot water becomes the temperature instructed from the main control device 11.
次に、発泡断熱材５０について説明する。
図３〜図５，図１０に示すように、発泡断熱材５０は、上下に２分割された構成であり、左右方向に長い平坦な箱状の下部断熱材５１と、この下部断熱材５１の上面側を覆う蓋状の上部断熱材５２とを備えている。発泡断熱材５０内には、温水加熱用熱交換器２１が収容されている。
Next, the foam heat insulating material 50 will be described.
As shown in FIG. 3 to FIG. 5 and FIG. 10, the foam heat insulating material 50 is divided into two parts in the vertical direction, a flat box-shaped lower heat insulating material 51 that is long in the left-right direction, and the lower heat insulating material 51. And a lid-like upper heat insulating material 52 covering the upper surface side. A heat exchanger 21 for heating hot water is accommodated in the foam heat insulating material 50.
発泡断熱材５０の前後方向幅は、横仕切り板４３の前後方向幅とほぼ同じ長さに形成され、発泡断熱材５０の左右方向幅は、横仕切り板４３の左右方向幅より僅かに短く形成されている。このため、発泡断熱材５０は、左側板３５との間に間隔を空けた状態で他の側板３６，３７，３８の上端部に当接又は近接した状態で固定される。 The front and rear width of the foam heat insulating material 50 is formed to be substantially the same as the front and rear width of the horizontal partition plate 43, and the left and right width of the foam heat insulating material 50 is slightly shorter than the left and right width of the horizontal partition plate 43. Has been. For this reason, the foam heat insulating material 50 is fixed in a state of being in contact with or close to the upper end portions of the other side plates 36, 37, 38 with a space between the left side plate 35.
下部断熱材５１の前端部と後端部には、複数の浅い溝状の被係合部５１ａが形成されている。横仕切り板４３の外周壁部の複数の係合部４３ａに対して、下部断熱材５１の複数の被係合部５１ａが係合されることで、下部断熱材５１は横仕切り板４３の上面側に固定される。下部断熱材５１内の右後ろ隅部には挿通孔５１ｂが形成され、この挿通孔５１ｂを介して、熱交換器通路部２１ａと内部通路２１ｂとは発泡断熱材５０の外部（機械室４５）へ延びている。上部断熱材５２の上端外周部の全周に亙って、水平面に対して傾斜した角部５２ａ〜５２ｄが形成されている。 A plurality of shallow groove-like engaged portions 51 a are formed at the front end portion and the rear end portion of the lower heat insulating material 51. The plurality of engaged portions 51 a of the lower heat insulating material 51 are engaged with the plurality of engaging portions 43 a of the outer peripheral wall portion of the horizontal partition plate 43, so that the lower heat insulating material 51 is placed on the upper surface of the horizontal partition plate 43. Fixed to the side. An insertion hole 51b is formed in the right rear corner of the lower heat insulating material 51, and the heat exchanger passage 21a and the internal passage 21b are connected to the outside of the foam heat insulating material 50 (machine room 45) via the insertion hole 51b. It extends to. Corner portions 52a to 52d that are inclined with respect to the horizontal plane are formed over the entire circumference of the upper end outer peripheral portion of the upper heat insulating material 52.
次に、発泡断熱材５０の固定構造に関わる各側板３５〜３８の上端部分の構造について説明する。
図３〜図９に示すように、各側板３５〜３８の上端部分の構造は基本的に同じ構成であり、夫々が、底板４１から縦方向に延びる本体板部３５ａ〜３８ａと、この本体板部３５ａ〜３８ａの上端部に連なり且つ内側へ僅かに段落ちした縦板部３５ｂ〜３８ｂと、この縦板部３５ｂ〜３８ｂの上端部から内方に向って傾斜した折り曲げ部３５ｃ〜３８ｃとを備えている。
Next, the structure of the upper end part of each side plate 35-38 in connection with the fixing structure of the foam heat insulating material 50 is demonstrated.
As shown in FIGS. 3 to 9, the structures of the upper end portions of the side plates 35 to 38 are basically the same, each of which has a main body plate portion 35 a to 38 a extending in the vertical direction from the bottom plate 41, and the main body plate. Vertical plate portions 35b to 38b that are connected to the upper end portions of the portions 35a to 38a and slightly stepped inward, and bent portions 35c to 38c that are inclined inward from the upper end portions of the vertical plate portions 35b to 38b. I have.
外装ケース２５が組み立てられた状態では、折り曲げ部３６ｃ〜３８ｃは上部断熱材５２の角部５２ｂ〜５２ｄに相対する位置関係になり、右側板３６の折り曲げ部３６ｃは、上部断熱材５２の右端角部５２ｂの全長と後端角部５２ｄの右側部分に当接し（図６，図７参照）、前側板３７の折り曲げ部３７ｃは、上部断熱材５２の前端角部５２ｃの全長に亙って当接し（図９参照）、後側板３８の折り曲げ部３８ｃは、上部断熱材５２の後端角部５２ｄの折り曲げ部３６ｃが当接していない部分の全長に亙って当接している（図８参照）。 In a state where the outer case 25 is assembled, the bent portions 36 c to 38 c are in a positional relationship relative to the corner portions 52 b to 52 d of the upper heat insulating material 52, and the bent portion 36 c of the right side plate 36 is the right end corner of the upper heat insulating material 52. The bent portion 37c of the front side plate 37 is in contact with the entire length of the front end corner portion 52c of the upper heat insulating material 52. (See FIG. 9), the bent portion 38c of the rear side plate 38 is in contact with the entire length of the portion where the bent portion 36c of the rear end corner portion 52d of the upper heat insulating material 52 is not in contact (see FIG. 8). ).
図７〜図９に示すように、外装ケース２５の天板４０の外周部には、下方へ延びる延長板部４０ａが全周に亙って形成され、この延長板部４０ａを各側板３５〜３８の上端部分の縦板部３５ｂ〜３８ｂに外嵌させることによって、各側板３５〜３８を締め付けて内方に押圧する。こうして、左側板３５の折り曲げ部３５ｃを除いた折り曲げ部３６ｃ〜３８ｃを介して上部断熱材５２の角部５２ｂ〜５２ｄに下方への押圧力が発生し、発泡断熱材５０を密閉状に固定している。 As shown in FIGS. 7 to 9, an extension plate portion 40 a extending downward is formed on the outer peripheral portion of the top plate 40 of the exterior case 25 over the entire periphery, and the extension plate portion 40 a is connected to each side plate 35-35. The side plates 35 to 38 are tightened and pressed inwardly by being fitted to the vertical plate portions 35 b to 38 b at the upper end portion of the plate 38. Thus, downward pressing force is generated at the corners 52b to 52d of the upper heat insulating material 52 via the bent portions 36c to 38c excluding the bent portion 35c of the left side plate 35, and the foam heat insulating material 50 is fixed in a sealed state. ing.
尚、天板４０が各側板３５〜３８の上端部分に外嵌され複数のビスを介して固定された状態では、上部断熱材５２の上端面と天板４０の下端面との間には、隙間５４が設けられている。この隙間５４は、発泡断熱材５０内の温水加熱用熱交換器２１の熱が天板４０に伝達するのを防止する機能を奏する。 In addition, in the state where the top plate 40 is externally fitted to the upper end portions of the side plates 35 to 38 and fixed via a plurality of screws, between the upper end surface of the upper heat insulating material 52 and the lower end surface of the top plate 40, A gap 54 is provided. The gap 54 has a function of preventing the heat of the hot water heating heat exchanger 21 in the foam heat insulating material 50 from being transmitted to the top board 40.
次に、本発明のヒートポンプ給湯装置１の作用及び効果について説明する。
発泡断熱材５０の組み立ての際に、外装ケース２５の各側板３５〜３８を取り外した状態で、横仕切り板４３の上面側に発泡断熱材５０の下部断熱材５１を設置する。このとき、下部断熱材５１の複数の被係合部５１ａを横仕切り板４３の複数の係合部４３ａに係合させて横仕切り板４６の上面側に水平方向への移動を規制した状態で固定する。
Next, the effect | action and effect of the heat pump hot-water supply apparatus 1 of this invention are demonstrated.
When assembling the foam heat insulating material 50, the lower heat insulating material 51 of the foam heat insulating material 50 is installed on the upper surface side of the horizontal partition plate 43 with the side plates 35 to 38 of the outer case 25 removed. At this time, in a state where the plurality of engaged portions 51 a of the lower heat insulating material 51 are engaged with the plurality of engaging portions 43 a of the horizontal partition plate 43 and the movement in the horizontal direction is restricted to the upper surface side of the horizontal partition plate 46. Fix it.
次に、下部断熱材５１内に温水加熱用熱交換器２１を収容して、これを覆うように下部断熱材５１を上部断熱材５２で蓋をする。次に、左側板３５，右側板３６，後側板３８を底板４１に順に取り付け、最後に前側板３７を取り付ける。このとき、左側板３５を除く各側板３６〜３８の折り曲げ部３６ｃ〜３８ｃを対応する上部断熱材５２の角部５２ｂ〜５２ｄに当接し、上部断熱材５２を下方に下部断熱材５１に押圧して発泡断熱材５０を固定する。 Next, the heat exchanger 21 for warm water heating is accommodated in the lower heat insulating material 51, and the lower heat insulating material 51 is covered with the upper heat insulating material 52 so as to cover it. Next, the left side plate 35, the right side plate 36, and the rear side plate 38 are attached to the bottom plate 41 in this order, and finally the front side plate 37 is attached. At this time, the bent portions 36c to 38c of the side plates 36 to 38 other than the left side plate 35 are brought into contact with the corresponding corner portions 52b to 52d of the upper heat insulating material 52, and the upper heat insulating material 52 is pressed downward to the lower heat insulating material 51. The foam heat insulating material 50 is fixed.
次に、天板４０を側板３５〜３８の上端部分に固定する。このとき、天板４０の延長板部４０ａを側板３５〜３８の上端部分の縦板部３５ｂ〜３８ｂに外嵌させて固定すると、側板３５〜３８が締め付けられて内方に押圧され、折り曲げ部３５ｃ〜３８ｃのうちの３辺の折り曲げ部３６ｃ〜３８ｃを介して上部断熱材５２の角部５２ｂ〜５２ｄに下方への押圧力が発生し、発泡断熱材５０をより強固に固定する。 Next, the top plate 40 is fixed to the upper end portions of the side plates 35 to 38. At this time, when the extension plate portion 40a of the top plate 40 is externally fitted and fixed to the vertical plate portions 35b to 38b of the upper end portions of the side plates 35 to 38, the side plates 35 to 38 are tightened and pressed inward, and the bent portion A downward pressing force is generated at the corners 52b to 52d of the upper heat insulating material 52 through the bent portions 36c to 38c on the three sides of 35c to 38c, thereby fixing the foamed heat insulating material 50 more firmly.
このように、側板３５〜３８を組み立てると、左側板３５を除く側板３６〜３８の折り曲げ部３６ｃ〜３８ｃにより、常に上部断熱材５２を下方に下部断熱材５１に押しつけた状態となる。従って、別途専用の固定部材を使用せずとも、発泡断熱材５０を密閉状に固定することができるので、発泡断熱材５０の固定構造を簡単化することができる。 As described above, when the side plates 35 to 38 are assembled, the upper heat insulating material 52 is always pressed downward against the lower heat insulating material 51 by the bent portions 36 c to 38 c of the side plates 36 to 38 except the left side plate 35. Therefore, since the foam heat insulating material 50 can be fixed in a sealed state without using a separate dedicated fixing member, the fixing structure of the foam heat insulating material 50 can be simplified.
また、発泡断熱材５０を固定する為に、専用の固定部材を必要としないので、部品点数を削減することができ、製造コストを低減することができる。さらに、側板３５〜３８を組み立てるだけで、発泡断熱材５０が密閉状に固定されるので、発泡断熱材５０の固定作業に手間が掛からず組み立て作業をスムーズに行なうことができる。 Further, since a dedicated fixing member is not required for fixing the foam heat insulating material 50, the number of parts can be reduced, and the manufacturing cost can be reduced. Furthermore, since the foam heat insulating material 50 is hermetically fixed only by assembling the side plates 35 to 38, the fixing operation of the foam heat insulating material 50 does not take time, and the assembly operation can be performed smoothly.
外装ケース２５の天板４０と上部断熱材５２との間には隙間５４が設けられているので、この隙間５４によって、温水加熱用熱交換器２１（凝縮器）からの熱が天板４０へ伝達するのを防止することができるため、温水加熱用熱交換器２１の保温性が向上する。 Since a gap 54 is provided between the top plate 40 of the outer case 25 and the upper heat insulating material 52, heat from the hot water heating heat exchanger 21 (condenser) is transferred to the top plate 40 through this gap 54. Since it can prevent transmitting, the heat retention property of the heat exchanger 21 for heating warm water improves.
外装ケース２５の天板４０の外周部から下方へ延びる延長板部４０ａを側板３５〜３８の上端部分に外嵌させることによって、側板３５〜３８を内方に押圧し、折り曲げ部３６ｃ〜３８ｃを介して上部断熱材５２の角部５２ｂ〜５２ｄに下方への押圧力を発生させるので、下部断熱材５１と上部断熱材５２とを確実に固定することができる。 By extending an extension plate portion 40a extending downward from the outer peripheral portion of the top plate 40 of the outer case 25 to the upper end portions of the side plates 35 to 38, the side plates 35 to 38 are pressed inward, and the bent portions 36c to 38c are Since the downward pressing force is generated at the corners 52b to 52d of the upper heat insulating material 52, the lower heat insulating material 51 and the upper heat insulating material 52 can be reliably fixed.
側板３５〜３８は、左右の側板３５，３６の一方の側板３６と、前側板３７と、後側板３８とを含むので、上部断熱材５２の少なくとも三辺の角部５２ｂ〜５２ｄを夫々押圧することができ、下部断熱材５１と上部断熱材５２とを安定的に固定することができる。 Since the side plates 35 to 38 include one side plate 36 of the left and right side plates 35 and 36, the front side plate 37, and the rear side plate 38, the side plates 35 to 38 press the corner portions 52 b to 52 d of at least three sides of the upper heat insulating material 52, respectively. The lower heat insulating material 51 and the upper heat insulating material 52 can be stably fixed.
次に、前記実施例を部分的に変更した形態について説明する。
［１］前記実施例では、上部断熱材５２の左端部の角部５２ａ以外の角部５２ｂ〜５２ｄに折り曲げ部３６ｃ〜３８ｄを当接して固定しているが、この構成に限定する必要はなく、上部断熱材５２の角部５２ａ〜５２ｄの全周（４辺）に亙って、側板３５〜３８の折り曲げ部３５ｃ〜３８ｃを当接して固定しても良い。
Next, a mode in which the above embodiment is partially changed will be described.
[1] In the above embodiment, the bent portions 36c to 38d are abutted and fixed to the corner portions 52b to 52d other than the corner portion 52a at the left end portion of the upper heat insulating material 52, but it is not necessary to be limited to this configuration. The bent portions 35c to 38c of the side plates 35 to 38 may be contacted and fixed over the entire circumference (four sides) of the corner portions 52a to 52d of the upper heat insulating material 52.
さらに、上部断熱材５２の角部５２ａ〜５２ｄのうち対向する２辺を固定するようにしても良い。つまり、上部断熱材５２の左右両端部の角部５２ａ，５２ｂに対して、左右の側板３５，３６の折り曲げ部３５ｃ，３６ｃを当接して固定しても良いし、上部断熱材５２の前後両端部の角部５２ｃ，５２ｄに対して、前後の側板３７，３８の折り曲げ部３７ｃ，３８ｃを当接して固定しても良い。 Furthermore, you may make it fix two opposing sides among the corner | angular parts 52a-52d of the upper heat insulating material 52. FIG. That is, the bent portions 35c and 36c of the left and right side plates 35 and 36 may be abutted and fixed to the corner portions 52a and 52b of the left and right end portions of the upper heat insulating material 52. The bent portions 37c, 38c of the front and rear side plates 37, 38 may be brought into contact with and fixed to the corner portions 52c, 52d.
［２］その他、当業者であれば、本発明の趣旨を逸脱することなく、前記実施例の種々の変更を付加した形態で実施可能で、本発明はそのような変更形態を包含するものである。 [2] In addition, those skilled in the art can implement the present invention in various forms with various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. is there.
１ ヒートポンプ給湯装置
１８ 外気熱吸収用熱交換器（蒸発器）
２０ 圧縮機
２１ 温水加熱用熱交換器（凝縮器）
２２ 膨張弁（膨張手段）
２３ 冷媒配管
２５ 外装ケース
３５〜３８ 側板
３５ｃ〜３８ｃ 折り曲げ部
４０ 天板
４０ａ 延長板部
４３ 横仕切り板
５０ 発泡断熱材
５１ 下部断熱材
５２ 上部断熱材
５２ａ〜５２ｄ 角部
５４ 隙間
1 Heat pump water heater 18 Heat exchanger for absorbing outside air heat (evaporator)
20 Compressor 21 Heat exchanger for heating hot water (condenser)
22 Expansion valve (expansion means)
23 Refrigerant piping 25 Outer case 35-38 Side plate 35c-38c Bending part 40 Top plate 40a Extension plate part 43 Horizontal partition plate 50 Foam heat insulating material 51 Lower heat insulating material 52 Upper heat insulating material 52a-52d Corner | angular part 54 Crevice
Claims (3)
前記凝縮器は上下に２分割された断熱材によって覆われ、
前記ケースの側板の上端部に内方に傾斜した折り曲げ部が設けられ、
前記断熱材のうちの上部断熱材の角部に前記折り曲げ部を当接させて、前記上部断熱材を下方に下部断熱材に押圧して断熱材を密閉状に固定したことを特徴とするヒートポンプ給湯装置。 A heat pump hot water supply apparatus comprising an evaporator, a compressor, an expansion means, and a condenser in a case and connected by refrigerant piping, the case comprising a side plate, a top plate, and a bottom plate, and an upper end in the case In the heat pump hot water supply apparatus in which the side portion is partitioned by a horizontal partition plate and the condenser is disposed on the upper surface side of the partition plate,
The condenser is covered with a heat insulating material divided into two parts,
A bent portion inclined inward is provided at the upper end of the side plate of the case,
A heat pump characterized in that the bent portion is brought into contact with a corner portion of the upper heat insulating material among the heat insulating materials, and the upper heat insulating material is pressed downward against the lower heat insulating material to fix the heat insulating material in a sealed state. Hot water supply device.
An extension plate portion extending downward from the outer peripheral portion of the top plate of the case is externally fitted to the upper end portion of the side plate, thereby pressing the side plate inwardly, and corner portions of the upper heat insulating material through the bent portions. The heat pump hot water supply device according to claim 1, wherein a downward pressing force is generated in the heat pump.
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| JP2015045424A (en) * | 2013-08-27 | 2015-03-12 | 株式会社ノーリツ | Heat pump hot water supply device |
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| KR102332112B1 (en) * | 2020-04-29 | 2021-11-30 | 린나이코리아 주식회사 | Boiler heat exchanger with insulation |
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