JP5413227B2 - Heat pump water heater - Google Patents
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- JP5413227B2 JP5413227B2 JP2010026182A JP2010026182A JP5413227B2 JP 5413227 B2 JP5413227 B2 JP 5413227B2 JP 2010026182 A JP2010026182 A JP 2010026182A JP 2010026182 A JP2010026182 A JP 2010026182A JP 5413227 B2 JP5413227 B2 JP 5413227B2
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Description
本発明は、ヒートポンプを用いて水の加熱を行うヒートポンプ給湯機に関する。 The present invention relates to a heat pump water heater that heats water using a heat pump.
従来、冷凍サイクルを用いたヒートポンプ式給湯機における熱交換器の配置方法が提案されており、例えば、図６に示すように、空気熱交換器１０２が水冷媒熱交換器１０３の背後に構成され、鉛直方向の高さが異なるフィンアンドチューブ式蒸発器で空気熱交換器を構成したものが提案されている（例えば、特許文献１参照）。 Conventionally, a method of arranging a heat exchanger in a heat pump type water heater using a refrigeration cycle has been proposed. For example, an air heat exchanger 102 is configured behind a water-refrigerant heat exchanger 103 as shown in FIG. A structure in which an air heat exchanger is configured by fin-and-tube evaporators having different vertical heights has been proposed (see, for example, Patent Document 1).
しかしながら、空気熱交換器１０２は蒸発器であるため結露し、その水が筐体底板に流れ込むように構成されているが、氷点下の条件においては、その筐体に流れ込んだ水が凍結することとなる。 However, since the air heat exchanger 102 is an evaporator and is condensed so that the water flows into the bottom plate of the casing, the water flowing into the casing is frozen under sub-freezing conditions. Become.
通常、氷点下においては熱交換器表面も凍結していくため、除霜運転を行い、空気熱交換器１０２に高温の冷媒を流すことで融かすことが可能であるが、本体筐体底板に滞留した氷は融かすことができない。 Normally, the surface of the heat exchanger also freezes below freezing, so it can be defrosted and melted by flowing a high-temperature refrigerant through the air heat exchanger 102. Ice that has been melted cannot be melted.
そして、凍結して滞留した氷は本体筐体からあふれ出す。さらには、筐体形状の変形につながるという課題を有していた。 And the ice which stayed by freezing overflows from the main body casing. Furthermore, it has a problem that it leads to deformation of the housing shape.
本発明は、前記従来の課題を解決するもので、氷の成長を抑制し、使用性の高いヒートポンプ給湯機を提供することを目的とする。 This invention solves the said conventional subject, and it aims at providing the heat pump water heater which suppresses the growth of ice and has high usability.
前記従来の課題を解決するために、本発明のヒートポンプ給湯機は、圧縮機、水冷媒熱交換器、減圧手段、蒸発器を順次接続したヒートポンプサイクルと、空気を前記蒸発器へ搬送する送風手段と、底板を有し、前記ヒートポンプサイクルおよび前記送風手段を内設した筐体と、を備え、前記水冷媒熱交換器は、前記底板上に配設され、前記蒸発器は、前記蒸発器の下面を構成するフィンの一部が前記底板と当接するように、前記底板上に配設され、前記蒸発器の直下の前記底板に、前記蒸発器から水が流れて滞留するような滞留部を設け、前記滞留部は、前記蒸発器の下面と当接する前記底板が、前記蒸発器の下面下方に延設されて形成され、前記蒸発器の直下に配置された排水穴を有するもので、筐体の底板と蒸発器とを接触させたことで、除霜時に高温となる蒸発器の熱により、筐体底板や滞留部に溜った氷を同時に融かすことができ、氷の成長による、筐体の変形、送風ファンとの接触による破損も防ぐことができる。 In order to solve the above-described conventional problems, a heat pump water heater of the present invention includes a heat pump cycle in which a compressor, a water refrigerant heat exchanger, a decompression unit, and an evaporator are sequentially connected, and an air blowing unit that conveys air to the evaporator. And a housing having a bottom plate, in which the heat pump cycle and the air blowing means are provided, the water-refrigerant heat exchanger is disposed on the bottom plate , and the evaporator is disposed on the evaporator. A retention portion disposed on the bottom plate so that a part of the fins constituting the lower surface is in contact with the bottom plate , and in which water flows from the evaporator and stays on the bottom plate immediately below the evaporator The retention portion is formed by extending the bottom plate in contact with the lower surface of the evaporator and extending below the lower surface of the evaporator, and has a drainage hole disposed immediately below the evaporator. The bottom plate of the housing is in contact with the evaporator In addition, the heat of the evaporator, which becomes hot during defrosting, can simultaneously melt the ice accumulated on the bottom plate and the retention part of the housing, preventing the deformation of the housing due to ice growth and damage due to contact with the blower fan. be able to.
本発明によれば、氷の成長を抑制し、使用性の高いヒートポンプ給湯機を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the growth of ice can be suppressed and a heat pump water heater with high usability can be provided.
第１の発明は、圧縮機、水冷媒熱交換器、減圧手段、蒸発器を順次接続したヒートポンプサイクルと、空気を前記蒸発器へ搬送する送風手段と、底板を有し、前記ヒートポンプサイクルおよび前記送風手段を内設した筐体と、を備え、前記水冷媒熱交換器は、前記底板上に配設され、前記蒸発器は、前記蒸発器の下面を構成するフィンの一部が前記底板と当接するように、前記底板上に配設され、前記蒸発器の直下の前記底板に、前記蒸発器から水が流れて滞留するような滞留部を設け、前記滞留部は、前記蒸発器の下面と当接する前記底板が、前記蒸発器の下面下方に延設されて形成され、前記蒸発器の直下に配置された排水穴を有することを特徴とするヒートポンプ給湯機で、筐体の底板と蒸発器とを接触させたことで、除霜時に高温となる蒸発器の熱により、筐体底板や滞留部に溜った氷を同時に融かすことができ、氷の成長による、筐体の変形、送風ファンとの接触による破損も防ぐことができる。 A first invention includes a heat pump cycle in which a compressor, a water refrigerant heat exchanger, a decompression unit, and an evaporator are sequentially connected, a blower unit that conveys air to the evaporator, and a bottom plate, and the heat pump cycle and the A housing having an air blowing means provided therein, the water-refrigerant heat exchanger is disposed on the bottom plate , and the evaporator includes a part of fins constituting a lower surface of the evaporator and the bottom plate. as contact is disposed on the bottom plate, the bottom plate immediately below the evaporator, the retention portion, such as retained by the water flowing from the evaporator is provided, wherein the retention portion, of the evaporator The heat pump water heater , wherein the bottom plate contacting the lower surface is formed to extend below the lower surface of the evaporator and has a drainage hole arranged immediately below the evaporator, and the bottom plate of the housing Due to the contact with the evaporator, the That by the evaporator of the heat may melt the ice accumulated on the bottom housing plate and the retainer portion at the same time, due to ice growth, deformation of the housing, breakage can be prevented due to contact with the blower fan.
また、滞留部に排水穴を配設したことを特徴とするもので、除霜時の熱により筐体底板の排水穴の凍結を防ぎ、除霜時に発生する水の排水を促進し、氷の成長による、筐体の変形、送風ファンとの接触による破損を防止することができる。 In addition, a drainage hole is provided in the staying part. The heat at the time of defrosting prevents freezing of the drainage hole of the casing bottom plate, promotes drainage of water generated at the time of defrosting, It is possible to prevent the deformation due to the growth and the damage due to the contact with the blower fan.
第２の発明は、蒸発器への冷媒入口部を、前記蒸発器を構成する冷媒管の最下段に設けたことを特徴とするもので、除霜運転時に最も冷媒が高温となる部分が、筐体底板と近接するように構成することにより、除霜時に高温となる蒸発器の熱により筐体底板の氷も同時に融かすことができ、氷の成長による、筐体の変形、送風ファンとの接触による破損を防止することができる。 The second invention is characterized in that the refrigerant inlet portion to the evaporator is provided at the lowest stage of the refrigerant pipe constituting the evaporator, and the portion where the refrigerant becomes hotest during the defrosting operation, By configuring it so that it is close to the case bottom plate, the ice on the case bottom plate can be melted at the same time by the heat of the evaporator, which becomes hot during defrosting. Can be prevented from being damaged.
第３の発明は、蒸発器の冷媒入口部を、前記蒸発器を構成する冷媒管の分岐上流側に設けたことを特徴とするもので、高温な冷媒の通過量が多く熱量が大きい部分を、筐体底板と近接するように構成することにより、除霜時に高温となる蒸発器の熱により筐体底板の氷も同時に融かすことができ、氷の成長による、筐体の変形、送風ファンとの接触による破損を防止することができる。 A third aspect of the invention is characterized in that the refrigerant inlet portion of the evaporator is provided on the upstream side of the branch of the refrigerant pipe constituting the evaporator. By constructing it close to the case bottom plate, the ice on the case bottom plate can be melted at the same time by the heat of the evaporator, which becomes hot during defrosting. Can be prevented from being damaged.
（実施の形態１）
図４は、実施の形態１におけるヒートポンプ給湯機システムの構成図である。まず、図４を用いてヒートポンプ給湯器の構成を説明する。
(Embodiment 1)
FIG. 4 is a configuration diagram of the heat pump water heater system in the first embodiment. First, the configuration of the heat pump water heater will be described with reference to FIG.
本実施の形態のヒートポンプ給湯機は、冷媒を圧縮して高温冷媒を吐出する圧縮機４と、水と高温冷媒とを熱交換して高温水を生成する水冷媒熱交換器１１と、冷媒を減圧する減圧装置６と、空気と冷媒とで熱交換を行う蒸発器７とを順次冷媒配管８で環状に接続してなる冷凍サイクルを有している。さらに、蒸発器７へ送風するための送風ファン９を有している。 The heat pump water heater of the present embodiment includes a compressor 4 that compresses a refrigerant and discharges a high-temperature refrigerant, a water-refrigerant heat exchanger 11 that exchanges heat between water and the high-temperature refrigerant to generate high-temperature water, and a refrigerant. It has a refrigeration cycle in which a decompression device 6 for decompressing and an evaporator 7 for exchanging heat between air and a refrigerant are sequentially connected in an annular manner by a refrigerant pipe 8. Further, it has a blower fan 9 for sending air to the evaporator 7.
また、過熱した水を貯留するためのタンク１２を備えており、水冷媒熱交換器１１で生成した高温水を給湯で利用するものである。そのため、タンク１２と水冷媒熱交換器１１とを水が循環する構成となっており、水を循環させるためのポンプ１６を備えている。 Moreover, the tank 12 for storing the overheated water is provided, and the high temperature water produced | generated with the water refrigerant | coolant heat exchanger 11 is utilized with hot water supply. Therefore, water is configured to circulate between the tank 12 and the water refrigerant heat exchanger 11, and a pump 16 for circulating water is provided.
図４では、除霜運転時には送風ファン９とポンプ１６を停止し、水冷媒熱交換器１１にある水の熱を圧縮機４による循環により蒸発器７に送ることにより蒸発器７の温度を上昇させ除霜をおこなう。 In FIG. 4, during the defrosting operation, the blower fan 9 and the pump 16 are stopped, and the temperature of the evaporator 7 is increased by sending the heat of water in the water / refrigerant heat exchanger 11 to the evaporator 7 by circulation through the compressor 4. To defrost.
以上のように構成されたヒートポンプ給湯機において、以下、蒸発器７の配置と構成について説明する。 In the heat pump water heater configured as described above, the arrangement and configuration of the evaporator 7 will be described below.
図１は、本発明の実施の形態１におけるヒートポンプ給湯機の側面図であり、図２は、その蒸発器と筐体底板近傍の拡大図で、図３は、本実施の形態のヒートポンプ給湯機の構成図である。 FIG. 1 is a side view of a heat pump water heater according to Embodiment 1 of the present invention, FIG. 2 is an enlarged view of the vicinity of the evaporator and a casing bottom plate, and FIG. 3 is a heat pump water heater according to the present embodiment. FIG.
蒸発器は、フィンアンドチューブ式の熱交換器を用いており、平型や波型の複数のフィン７ｂに直交するように冷媒管７ａが内部を貫通しており、空気と冷媒との熱交換を行っている。 The evaporator uses a fin-and-tube heat exchanger, and the refrigerant pipe 7a passes through the inside so as to be orthogonal to a plurality of flat and corrugated fins 7b, and heat exchange between the air and the refrigerant is performed. It is carried out.
そして、蒸発器７のフィン７ｂの一部は、筐体底板１７と接触するように配置されている。また、底板１７の水滞留部１７ａを、蒸発器７の直下に配し、除湿水排水穴１９も蒸発器７の直下に配している。 A part of the fin 7 b of the evaporator 7 is disposed so as to contact the housing bottom plate 17. Further, the water retention part 17 a of the bottom plate 17 is arranged directly under the evaporator 7, and the dehumidified water drain hole 19 is also arranged directly under the evaporator 7.
図５は、本実施の形態の蒸発器７の冷媒流路構成図である。冷媒入口７ｃを、冷媒管７ａの最下段に配置し、また冷媒分岐７ｅを冷媒入口７ｃより冷媒流路下流に配し、再度７ｆで合流、流出していくよう接続されている。 FIG. 5 is a refrigerant flow path configuration diagram of the evaporator 7 of the present embodiment. The refrigerant inlet 7c is arranged at the lowermost stage of the refrigerant pipe 7a, and the refrigerant branch 7e is arranged downstream of the refrigerant flow path from the refrigerant inlet 7c, and is connected so as to merge and flow out again at 7f.
以上のように、本実施の形態の蒸発器７の配置方法では、除霜時に高温となる冷媒入口７ｃ近傍のフィン７ｂが底板１７に接触していることで、除霜時の熱を底板１７に成長している氷の溶融に利用できる。 As described above, in the arrangement method of the evaporator 7 according to the present embodiment, the fin 7b in the vicinity of the refrigerant inlet 7c, which becomes a high temperature during defrosting, is in contact with the bottom plate 17, so that heat at the time of defrosting is reduced to the bottom plate 17. It can be used to melt ice that has grown.
また、冷媒分岐７ｅの上流に冷媒入口７ｃを配置することで、流れる冷媒量を増やし熱量を最大とすることができる。 Further, by arranging the refrigerant inlet 7c upstream of the refrigerant branch 7e, the amount of flowing refrigerant can be increased and the amount of heat can be maximized.
また、蒸発器７直下に排水穴１９を配置することで、溶融した水を速やかに排水するとともに、凍結による排水穴１９のつまりを防ぐことができる。 In addition, by disposing the drainage hole 19 immediately below the evaporator 7, it is possible to drain the molten water quickly and prevent the drainage hole 19 from clogging due to freezing.
また、底板に流れた水が底板滞留部１７ａに溜まる事で除霜水が排出されずに再度凍っても、次回除霜時に蒸発器７の熱で再度溶かすことができる。 Moreover, even if it defrosts again without draining defrost water because the water which flowed to the bottom plate accumulates in the bottom plate retention part 17a, it can be melted again by the heat of the evaporator 7 at the next defrost.
以上のように、本発明のヒートポンプ給湯機は、水冷媒熱交換器を蒸発器近傍に配した温水暖房装置にも、適用することができる。 As described above, the heat pump water heater of the present invention can also be applied to a hot water heating apparatus in which a water refrigerant heat exchanger is arranged in the vicinity of an evaporator.
１ ヒートポンプユニット筐体
２ 貯湯ユニット
３ 水回路
４ 圧縮機
６ 膨張弁
７ 蒸発器
７ａ 冷媒管
７ｂ フィン
７ｃ 冷媒入口
７ｄ 冷媒分岐
７ｅ 冷媒出口
８ 冷媒管
９ 送風ファン
１１ 水冷媒熱交換器
１２ タンク
１６ ポンプ
１７ 底板
１７ａ 底板水滞留部
１８ 水冷媒熱交換器カバー
１９ 排水穴
DESCRIPTION OF SYMBOLS 1 Heat pump unit housing | casing 2 Hot water storage unit 3 Water circuit 4 Compressor 6 Expansion valve 7 Evaporator 7a Refrigerant pipe 7b Fin 7c Refrigerant inlet 7d Refrigerant branch 7e Refrigerant outlet 8 Refrigerant pipe 9 Blower fan 11 Water refrigerant heat exchanger 12 Tank 16 Pump 17 Bottom plate 17a Bottom plate water retention part 18 Water refrigerant heat exchanger cover 19 Drain hole
Claims (3)
空気を前記蒸発器へ搬送する送風手段と、
底板を有し、前記ヒートポンプサイクルおよび前記送風手段を内設した筐体と、を備え、前記水冷媒熱交換器は、前記底板上に配設され、
前記蒸発器は、前記蒸発器の下面を構成するフィンの一部が前記底板と当接するように、前記底板上に配設され、
前記蒸発器の直下の前記底板に、前記蒸発器から水が流れて滞留するような滞留部を設け、
前記滞留部は、前記蒸発器の下面と当接する前記底板が、前記蒸発器の下面下方に延設されて形成され、前記蒸発器の直下に配置された排水穴を有することを特徴とするヒートポンプ給湯機。 A heat pump cycle in which a compressor, a water refrigerant heat exchanger, a decompression means, and an evaporator are sequentially connected;
Air blowing means for conveying air to the evaporator;
A housing having a bottom plate and including the heat pump cycle and the air blowing means, and the water-refrigerant heat exchanger is disposed on the bottom plate ,
The evaporator is disposed on the bottom plate such that a part of the fins constituting the lower surface of the evaporator is in contact with the bottom plate ,
In the bottom plate directly below the evaporator, a retention portion is provided so that water flows and stays from the evaporator ,
The residence part is formed by extending the bottom plate of the bottom surface of the evaporator in contact with the lower surface of the evaporator, and has a drain hole arranged immediately below the evaporator. Water heater.
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| JP2010026182A JP5413227B2 (en) | 2010-02-09 | 2010-02-09 | Heat pump water heater |
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| JP2010026182A JP5413227B2 (en) | 2010-02-09 | 2010-02-09 | Heat pump water heater |
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| JP5413227B2 true JP5413227B2 (en) | 2014-02-12 |
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| JP2014121492A (en) * | 2012-12-21 | 2014-07-03 | Sankyo Co Ltd | Game machine |
| JP6471059B2 (en) * | 2015-07-03 | 2019-02-13 | リンナイ株式会社 | Tank unit |
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| JPS5854347B2 (en) * | 1982-09-10 | 1983-12-03 | 株式会社日立製作所 | Evaporator |
| JP3993331B2 (en) * | 1999-01-07 | 2007-10-17 | 三菱重工業株式会社 | Air conditioner |
| JP4228976B2 (en) * | 2004-04-19 | 2009-02-25 | パナソニック株式会社 | Heat pump water heater |
| JP2008151418A (en) * | 2006-12-18 | 2008-07-03 | Mitsubishi Electric Corp | Heat pump type hot water supply apparatus |
| JP2009002549A (en) * | 2007-06-20 | 2009-01-08 | Panasonic Corp | Heat pump water heater |
| JP5012569B2 (en) * | 2008-02-29 | 2012-08-29 | 三菱電機株式会社 | Heat pump water heater |
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