JP4763508B2 - Drainage device for heat pump water heater - Google Patents
Drainage device for heat pump water heater Download PDFInfo
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- JP4763508B2 JP4763508B2 JP2006138582A JP2006138582A JP4763508B2 JP 4763508 B2 JP4763508 B2 JP 4763508B2 JP 2006138582 A JP2006138582 A JP 2006138582A JP 2006138582 A JP2006138582 A JP 2006138582A JP 4763508 B2 JP4763508 B2 JP 4763508B2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 136
- 239000003507 refrigerant Substances 0.000 claims description 31
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
この発明は、ヒートポンプ式給湯機の排水装置及びヒートポンプ式給湯機の給湯ユニットに関するものである。 The present invention relates to a drain device for a heat pump type hot water heater and a hot water supply unit for a heat pump type hot water heater.
例えば、ガス湯沸器などに設けられる排水装置は、排水管に水抜栓を螺合し、水抜栓をゆるめて排水する方式を一般とする。排水管は湯沸器等の熱交換器に接続されている水路に接続されている。排水管にはネジ部が設けられ、水抜栓がネジ部に螺合する。水抜栓に加圧防止装置が付いていて何らかの原因で内圧が高くなった時自動的に加圧防止装置が働き内圧を下げるようになっている。合成樹脂製のホースエンドが水抜栓に回動自在に取付けられ、ホースエンドの取付部が水抜栓の溝部にゆるく嵌合している。そして、ホースがホースエンドに取付けられている。排水をホースを介して別箇所へ排水する時でも、ホースを保持して水抜栓をゆるめれば排水ができる。水抜栓のゆるめ作業が行い易く、又ホースのねじれが生じることがない湯沸器等の排水装置が提案されている（例えば、特許文献１参照）。
従来の排水装置は、以上のように構成されているので、軟質合成樹脂にて形成された水抜き用のホースはホースエンドに常設しなければならずホースが劣化しやすくなる。またホースエンドは水抜栓本体に緩く嵌合されているため、水抜栓本体とホースエンドに生じる隙間から水または温水が漏れて周囲を汚すなどの課題があった。 Since the conventional drainage apparatus is configured as described above, a drainage hose formed of a soft synthetic resin must be permanently installed at the hose end, and the hose tends to deteriorate. Moreover, since the hose end is loosely fitted to the water drain main body, there is a problem that water or hot water leaks from the gap generated between the water drain main body and the hose end, thereby contaminating the surroundings.
この発明は、上記のよう課題を解決するためになされたもので、水抜きホースを劣化させることなくホースエンドに脱着可能で、水抜栓を緩めて排水する場合、本体とホースエンドに生じる隙間から水または温水の漏れることのないヒートポンプ式給湯機の排水装置及びヒートポンプ式給湯機の給湯ユニットを提供することを目的とする。 This invention has been made to solve the above-described problems, and can be attached to and detached from the hose end without deteriorating the drainage hose. An object of the present invention is to provide a drainage device for a heat pump water heater and a water heater unit for the heat pump water heater that does not leak water or hot water.
この発明に係るヒートポンプ式給湯機の排水装置は、冷媒と水とが熱交換を行う温水用熱交換器を有するヒートポンプ式給湯機の排水装置において、温水用熱交換器に接続し、内部に排水路を形成する排水管と、この排水管に止水用シール部材を介して螺合し、ホースエンド部を有する水抜栓と、ホースエンド部に着脱自在に装着される水抜きホースとを備えたことを特徴とする。 The heat pump water heater drain device according to the present invention is a heat pump water heater drain device having a hot water heat exchanger in which heat is exchanged between refrigerant and water, and is connected to the hot water heat exchanger and drained inside. A drain pipe that forms a passage, a drain plug that has a hose end portion screwed to the drain pipe via a water sealing seal member, and a drain hose that is detachably attached to the hose end portion It is characterized by that.
この発明に係るヒートポンプ式給湯機の排水装置は、上記構成により、水抜きホースは常設させることなく脱着可能となり水抜きホースの劣化を防止できる。 The drainage device of the heat pump type hot water heater according to the present invention can be attached and detached without permanently installing the drainage hose, and can prevent the drainage hose from being deteriorated.
実施の形態１．
図１乃至図８は実施の形態１を示す図で、図１はヒートポンプ式給湯機の給湯ユニット１０１の内部正面図、図２はヒートポンプ式給湯機の給湯ユニット１０１の冷媒及び水回路図、図３は温水用熱交換器２１の平面図（ａ）とＡ−Ａ断面図（ｂ）、図４は温水用熱交換器２１の部分斜視図、図５はヒートポンプ式給湯機の排水装置２０の構成図、図６はホースエンド部９付近の拡大図、図７はヒートポンプ式給湯機の排水装置２０の構成図、図８はフロン系冷媒と自然冷媒の特性を比較した図である。
Embodiment 1 FIG.
1 to 8 are diagrams showing Embodiment 1, FIG. 1 is an internal front view of a hot water supply unit 101 of a heat pump type hot water heater, FIG. 2 is a refrigerant and water circuit diagram of the hot water supply unit 101 of the heat pump type hot water heater, and FIG. 3 is a plan view (a) and AA cross-sectional view (b) of the heat exchanger 21 for hot water, FIG. 4 is a partial perspective view of the heat exchanger 21 for hot water, and FIG. 5 is a view of the drainage device 20 of the heat pump water heater. FIG. 6 is an enlarged view of the vicinity of the hose end portion 9, FIG. 7 is a view of the structure of the drain device 20 of the heat pump type hot water heater, and FIG. 8 is a view comparing the characteristics of a chlorofluorocarbon refrigerant and a natural refrigerant.
ヒートポンプ式給湯機の給湯ユニット１０１は、図１に示す構成であり、温水用熱交換器２１は、中間ベース２８より下の、ヒートポンプ式給湯機の給湯ユニット１０１の下部に設置される。 The hot water supply unit 101 of the heat pump type hot water heater is configured as shown in FIG. 1, and the hot water heat exchanger 21 is installed below the intermediate base 28 and below the hot water supply unit 101 of the heat pump type hot water heater.
空気用熱交換器２２、及びプロペラファン２３を有する空気熱交換室２４と、この空気熱交換室２４の側部に設けられ、冷媒回路の圧縮機２５、及びヒートポンプ式給湯機の給湯ユニット１０１の運転を制御する電気品２６等を有する機械室２７とを中間ベース２８の上に設置している。 An air heat exchange chamber 24 having an air heat exchanger 22 and a propeller fan 23, and a compressor 25 of a refrigerant circuit, and a hot water supply unit 101 of a heat pump water heater provided on a side portion of the air heat exchange chamber 24. A machine room 27 having an electrical component 26 and the like for controlling operation is installed on the intermediate base 28.
温水用熱交換器２１の側面下部に、後述するヒートポンプ式給湯機の排水装置２０が設置されている。ヒートポンプ式給湯機の排水装置２０には、水抜きホース８が接続される。 A drain device 20 of a heat pump type hot water heater, which will be described later, is installed at the lower part of the side surface of the hot water heat exchanger 21. A drain hose 8 is connected to the drain device 20 of the heat pump type hot water heater.
このように、容積の大きい温水用熱交換器２１をヒートポンプ式給湯機の給湯ユニット１０１の下部に設置し、空気熱交換室２４と機械室２７とをヒートポンプ式給湯機の給湯ユニット１０１の上部に設置することにより、容積効率のよい部品配置を実現している。 Thus, the hot water heat exchanger 21 having a large volume is installed in the lower part of the hot water supply unit 101 of the heat pump type hot water heater, and the air heat exchange chamber 24 and the machine room 27 are arranged in the upper part of the hot water supply unit 101 of the heat pump type hot water heater. By installing, component placement with high volume efficiency is realized.
図２に示すように、冷媒３２が流れる冷媒回路は、冷媒を圧縮する圧縮機２５、温水用熱交換器２１、絞り装置３６、空気用熱交換器２２を順次接続して構成される。本実施の形態は、温水用熱交換器２１の水回路における排水に関するものであるから、冷媒回路の詳細については説明は省略する。 As shown in FIG. 2, the refrigerant circuit through which the refrigerant 32 flows is configured by sequentially connecting a compressor 25 that compresses the refrigerant, a hot water heat exchanger 21, an expansion device 36, and an air heat exchanger 22. Since the present embodiment relates to drainage in the water circuit of the hot water heat exchanger 21, the details of the refrigerant circuit will be omitted.
尚、冷媒回路の冷媒には、臨界温度の低いＣＯ２（二酸化炭素）冷媒（臨界温度は３１℃）を使用している。図８に示すように、ＣＯ２冷媒はフロン系冷媒よりも地球温暖化係数（ＧＷＰ）、オゾン層破壊係数（ＯＤＰ）が小さい。このようなＣＯ２を冷媒として使用するので、効率良く高温（９０℃以上）沸き上げが可能となると同時に、地球温暖化防止に貢献できる効果がある。温水用熱交換器２１は、圧縮機２５より吐出された高圧のガス冷媒と給湯用水とを熱交換する。温水用熱交換器２１の下部に、排水管２と水抜栓１とを有するヒートポンプ式給湯機の排水装置２０が設けられる。 Note that a CO 2 (carbon dioxide) refrigerant having a low critical temperature (the critical temperature is 31 ° C.) is used as the refrigerant in the refrigerant circuit. As shown in FIG. 8, the CO 2 refrigerant has a global warming potential (GWP) and an ozone depletion coefficient (ODP) smaller than those of the chlorofluorocarbon refrigerant. Since such CO 2 is used as a refrigerant, boiling can be efficiently performed at a high temperature (90 ° C. or higher), and at the same time, there is an effect of contributing to prevention of global warming. The hot water heat exchanger 21 exchanges heat between the high-pressure gas refrigerant discharged from the compressor 25 and hot water supply water. A drainage device 20 of a heat pump type hot water heater having a drain pipe 2 and a water drain plug 1 is provided at the lower part of the heat exchanger 21 for hot water.
図３（ａ）に示すように、温水用熱交換器２１は、平面上において長円形状となるように渦巻き形状に、上下に二段（図３（ｂ）参照）に形成された水通路となる水配管３４と、水配管３４の外周に螺旋状に巻き付けられた冷媒通路となる冷媒配管３５とを備える。但し、温水用熱交換器２１の段数は任意でよい。 As shown in FIG. 3 (a), the hot water heat exchanger 21 is formed in a spiral shape so as to have an elliptical shape on a plane, and a water passage formed vertically in two stages (see FIG. 3 (b)). And a refrigerant pipe 35 serving as a refrigerant passage spirally wound around the outer circumference of the water pipe 34. However, the number of stages of the hot water heat exchanger 21 may be arbitrary.
温水用熱交換器２１は、例えば、ヒートポンプ式給湯機の室外ユニットの水側熱交換器に使用される。水配管３４を流れる水と、冷媒配管３５を流れる冷媒とは対向流となるように逆向きに流れる。冷媒には、ＣＯ２、ＨＦＣ、ＨＣＦＣ、ＨＣ等が用いられる。 The hot water heat exchanger 21 is used, for example, in a water side heat exchanger of an outdoor unit of a heat pump type hot water heater. The water flowing through the water pipe 34 and the refrigerant flowing through the refrigerant pipe 35 flow in opposite directions so as to face each other. The refrigerant, CO 2, HFC, HCFC, HC and the like are used.
図３に示す温水用熱交換器２１は、例えば、冷媒配管３５が外周に螺旋状に巻き付けられた水配管３４の一段目の渦巻きの外周側の水入口部３４ｅから巻き始め、一段目の渦巻きの中心部から二段目の渦巻きに移行し、その後二段目の渦巻きの外周側まで巻き、最後に曲線部２１ａで外周側の渦巻きの径より小さい径で曲げて、直線部２１ｂの先端の水出口部３４ｆが温水用熱交換器２１の中心部付近に位置するように構成する。 The hot water heat exchanger 21 shown in FIG. 3 starts to wind, for example, from the water inlet 34e on the outer periphery side of the first swirl of the water pipe 34 in which the refrigerant pipe 35 is spirally wound around the outer periphery. Transition from the center of the coil to the second-stage spiral, then wind to the outer periphery of the second-stage spiral, and finally bend the curved portion 21a with a diameter smaller than the diameter of the outer spiral, The water outlet 34f is configured to be located near the center of the hot water heat exchanger 21.
例えば、ヒートポンプ式給湯機の室外ユニットの水側熱交換器に温水用熱交換器２１が使用される場合に高温となる水配管３４の水出口部３４ｆが温水用熱交換器２１の中心部付近に位置するので、形状の自由度が増加し、実装密度が高くなり、省スペースでヒートポンプ式給湯機の室外ユニット内に設置できる効果がある。 For example, when the hot water heat exchanger 21 is used as the water side heat exchanger of the outdoor unit of the heat pump type hot water heater, the water outlet 34 f of the water pipe 34 that becomes high temperature is near the center of the hot water heat exchanger 21. Therefore, the degree of freedom of the shape is increased, the mounting density is increased, and there is an effect that it can be installed in the outdoor unit of the heat pump water heater in a small space.
図４に示すように、水配管３４は、外壁側に管外壁側螺旋状凹部３４ａが螺旋状に、ここでは３条並列に形成されている。条数は少なくとも１条あればよい。 As shown in FIG. 4, the water pipe 34 has a pipe outer wall side spiral recess 34 a formed in a spiral shape on the outer wall side, in this case, in parallel with three strips. There should be at least one article.
管外壁側螺旋状凹部３４ａの両端には、管外壁側螺旋状凸部３４ｂがやはり螺旋状に形成されている。 The pipe outer wall side spiral convex part 34b is also formed in a spiral shape at both ends of the pipe outer wall side spiral concave part 34a.
図５に示すように、ヒートポンプ式給湯機の排水装置２０の水抜栓１は、温水用熱交換器２１に接続し、内部に排水路６を形成する排水管２のネジ部３と螺合している。止水用シール部材４は排水管２の弁座５に接して水密を保ち、止水用シール部材４により排水管２の排水路６と、止水用シール部材４より下流側の水抜き路７を水密している。 As shown in FIG. 5, the drain plug 1 of the drain device 20 of the heat pump type hot water heater is connected to the heat exchanger 21 for hot water and screwed with the screw portion 3 of the drain pipe 2 that forms the drain channel 6 therein. ing. The water stop seal member 4 is in contact with the valve seat 5 of the drain pipe 2 to keep water tight, and the water stop seal member 4 causes the drain path 6 of the drain pipe 2 and the water drain path downstream from the water stop seal member 4. 7 is watertight.
水抜きホース８は、水抜栓１に一体に成形されたホースエンド部９に設けられたホース挿入部１０と嵌合している。 The drain hose 8 is fitted with a hose insertion portion 10 provided in a hose end portion 9 formed integrally with the drain plug 1.
ホース挿入部１０は、図６に示すように、水抜きホース８が挿入し易く、かつ簡単には抜けないように構成されている。ホース挿入部１０は、ホースエンド部９の外周面に、ホース挿入方向に径が徐々に拡大するテーパ部１０ａと、このテーパ部１０ａから屈曲して段差を形成する屈曲部１０ｂとが連続して複数形成された構成である。テーパ部１０ａの存在により、水抜きホース８がホース挿入部１０に挿入しやすく、またテーパ部１０ａと屈曲部１０ｂとの交点である角の存在により水抜きホース８が簡単には抜けない。但し、強い力で水抜きホース８を反挿入方向に引っ張ればホース挿入部１０から水抜きホース８は抜ける。即ち、水抜きホース８は、ホースエンド部９に着脱自在に取り付けられている。 As shown in FIG. 6, the hose insertion portion 10 is configured so that the drain hose 8 can be easily inserted and cannot be easily removed. The hose insertion part 10 has a taper part 10a whose diameter gradually increases in the hose insertion direction and a bent part 10b which is bent from the taper part 10a and forms a step on the outer peripheral surface of the hose end part 9. It is the structure formed in multiple numbers. Due to the presence of the tapered portion 10a, the drainage hose 8 can be easily inserted into the hose insertion portion 10, and the drainage hose 8 cannot be easily removed due to the presence of a corner that is the intersection of the tapered portion 10a and the bent portion 10b. However, if the drainage hose 8 is pulled in the anti-insertion direction with a strong force, the drainage hose 8 comes out from the hose insertion portion 10. That is, the drain hose 8 is detachably attached to the hose end portion 9.
水抜栓１には、水抜き用の水抜き孔１３が設けられている。 The drain plug 1 is provided with a drain hole 13 for draining water.
図７に示すように、リング状のシール部材１１が排水管２のネジ部３と螺合する部分の水抜栓１の端部に取り付けられ、水抜き路７を水密している。 As shown in FIG. 7, a ring-shaped sealing member 11 is attached to the end of the drain plug 1 at a portion that is screwed with the screw portion 3 of the drain pipe 2, thereby water-tightening the drain passage 7.
次に動作について説明する。
このように構成されたヒートポンプ式給湯機の排水装置２０において、水抜きホース８を、排水路６内の水または温水を機外へ排水する場合、水抜栓１と一体に形成されたホースエンド部９に設けられたホース挿入部１０に嵌合させて取り付ける。排水路６内の水または温水は、水抜栓１とネジ部３との螺合を緩めることにより弁座５と止水用シール部材４との間に形成される隙間より水抜き孔１３を通り水抜栓１と一体に成形されたホースエンド部９を通り、ホースエンド部９に設けられたホース挿入部１０と嵌合している水抜きホース８より外部へ排水される。
Next, the operation will be described.
In the drainage device 20 of the heat pump type water heater configured as described above, when the drainage hose 8 drains the water in the drainage channel 6 or the warm water to the outside of the machine, the hose end portion formed integrally with the drainage tap 1 The hose insertion part 10 provided in 9 is fitted and attached. The water or warm water in the drainage channel 6 passes through the drainage hole 13 from the gap formed between the valve seat 5 and the water-stop seal member 4 by loosening the screwing of the drain plug 1 and the screw portion 3. After passing through the hose end portion 9 formed integrally with the drain plug 1, the water is discharged from the drain hose 8 fitted to the hose insertion portion 10 provided in the hose end portion 9 to the outside.
排水路６内の水または温水の排水が完了した後、水抜きホース８はホースエンド部９より取り外す。 After draining the water in the drain channel 6 or warm water, the drain hose 8 is removed from the hose end portion 9.
排水路６内のリング状のシール部材１１は、水抜栓１とネジ部３との螺合を緩めた場合に生じる隙間から漏れる水または温水を保持し、水漏れを防止する。 The ring-shaped sealing member 11 in the drainage channel 6 holds water or hot water leaking from a gap generated when the screw connection between the water drain plug 1 and the screw portion 3 is loosened, and prevents water leakage.
以上のように、水抜きホース８はホースエンド部９の外周面に設けられた、ホース挿入方向に径が徐々に拡大するテーパ部１０ａと、このテーパ部１０ａから屈曲して段差を形成する屈曲部１０ｂとが連続して複数形成されたホース挿入部１０に嵌合するようにしているので、排水路６内の水または温水の排水完了後は取り外しすることができる。従って、水抜きホース８を劣化させることがない。 As described above, the drain hose 8 is provided on the outer peripheral surface of the hose end portion 9 and has a tapered portion 10a whose diameter gradually increases in the hose insertion direction, and a bent portion that is bent from the tapered portion 10a to form a step. Since the plurality of portions 10b are continuously fitted to the formed hose insertion portion 10, it can be removed after the drainage of the water in the drainage channel 6 or the hot water. Therefore, the drain hose 8 is not deteriorated.
１ 水抜栓、２ 排水管、３ ネジ部、４ 止水用シール部材、５ 弁座、６ 排水路、７ 水抜き路、８ 水抜きホース、９ ホースエンド部、１０ ホース挿入部、１０ａ テーパ部、１０ｂ 屈曲部、１１ シール部材、１３ 水抜き孔、２０ ヒートポンプ式給湯機の排水装置、２１ 温水用熱交換器、２１ａ 曲線部、２１ｂ 直線部、２２ 空気用熱交換器、２３ プロペラファン、２４ 空気熱交換室、２５ 圧縮機、２６ 電気品、２７ 機械室、２８ 中間ベース、２９ ポンプ、３０ 給水バルブ、３１ 水、３２ 冷媒、３３ 送水バルブ、３４ 水配管、３４ａ 管外壁側螺旋状凹部、３４ｂ 管外壁側螺旋状凸部、３４ｅ 水入口部、３４ｆ 水出口部、３５ 冷媒配管、３５ａ 冷媒配管、３５ｂ 冷媒配管、３５ｃ 冷媒配管、３６ 絞り装置、１０１ ヒートポンプ式給湯機の給湯ユニット。 1 Drain plug, 2 Drain pipe, 3 Screw part, 4 Sealing member for water stop, 5 Valve seat, 6 Drainage path, 7 Drainage path, 8 Drainage hose, 9 Hose end part, 10 Hose insertion part, 10a Taper part DESCRIPTION OF SYMBOLS 10b Bending part, 11 Seal member, 13 Drain hole, 20 Drainage device of heat pump type hot water heater, 21 Heat exchanger for hot water, 21a Curved part, 21b Straight part, 22 Air heat exchanger, 23 Propeller fan, 24 Air heat exchange chamber, 25 compressor, 26 electrical equipment, 27 machine room, 28 intermediate base, 29 pump, 30 water supply valve, 31 water, 32 refrigerant, 33 water supply valve, 34 water piping, 34a spiral recess on the pipe outer wall side, 34b Pipe outer wall side spiral convex part, 34e Water inlet part, 34f Water outlet part, 35 Refrigerant pipe, 35a Refrigerant pipe, 35b Refrigerant pipe, 35c Refrigerant pipe, 36 Device, 101 heat pump water heater hot-water supply unit.
Claims (2)
前記温水用熱交換器に接続し、内部に排水路を形成する排水管と、
この排水管に止水用シール部材を介して螺合し、ホースエンド部を有する水抜栓と、
前記ホースエンド部に着脱自在に装着される水抜きホースと、
前記水抜栓の前記排水管のネジ部と螺合する部分の端部に、前記止水用シール部材より下流側の水抜き路を水密するリング状のシール部材と、を備え、
前記シール部材は、前記水抜栓と前記ネジ部との螺合を緩めた場合に生じる隙間から漏れる水または温水を保持し、水漏れを防止することを特徴とするヒートポンプ式給湯機の排水装置。 In the drainage device of the heat pump water heater having a heat exchanger for hot water in which the refrigerant and water exchange heat,
A drainage pipe connected to the heat exchanger for hot water and forming a drainage channel therein;
A water draining screw having a hose end portion screwed to the drain pipe through a sealing member for water stop,
A drainage hose detachably attached to the hose end portion;
A ring-shaped seal member that tightly seals the drainage channel downstream of the water-stop sealing member at the end of the portion that is screwed with the threaded portion of the drain pipe of the drain plug;
The drainage device for a heat pump type hot water heater , wherein the seal member retains water or hot water leaking from a gap generated when the screw connection between the water drain plug and the screw portion is loosened to prevent water leakage .
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| Application Number | Priority Date | Filing Date | Title |
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| JP2006138582A JP4763508B2 (en) | 2006-05-18 | 2006-05-18 | Drainage device for heat pump water heater |
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| JP2006138582A JP4763508B2 (en) | 2006-05-18 | 2006-05-18 | Drainage device for heat pump water heater |
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| JP2007309573A JP2007309573A (en) | 2007-11-29 |
| JP4763508B2 true JP4763508B2 (en) | 2011-08-31 |
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| CN106322561A (en) * | 2016-08-31 | 2017-01-11 | 新昌县开铭制冷配件有限公司 | Aluminum adapting pipe applied to air conditioner refrigeration pipes |
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| JPS5029345U (en) * | 1973-07-11 | 1975-04-03 | ||
| JPS5654737U (en) * | 1979-10-02 | 1981-05-13 | ||
| JPS573939U (en) * | 1980-06-10 | 1982-01-09 | ||
| JP2002243207A (en) * | 2001-02-13 | 2002-08-28 | Denso Corp | Refrigerating device |
| JP2002267257A (en) * | 2001-03-05 | 2002-09-18 | Denso Corp | Heat exchanger |
| JP2003240343A (en) * | 2002-02-12 | 2003-08-27 | Denso Corp | Heat exchanger and hot water supply system |
| JP2006084164A (en) * | 2004-09-17 | 2006-03-30 | Mitsubishi Electric Corp | Hot water supply outdoor machine and hot water supply air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871859A (en) * | 1973-07-09 | 1975-03-18 | David A Jackson | Process of treating electrolytic zinc refining jarosite residues |
| DE2939207A1 (en) * | 1979-09-27 | 1981-04-16 | Siemens AG, 1000 Berlin und 8000 München | Low-voltage high-power fuse - has grip flaps joined by base and held to casing by straps passing around casing |
| JPS573939A (en) * | 1980-06-10 | 1982-01-09 | Sanko Kiki Kk | Opening and conveying apparatus of concrete cover |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5029345U (en) * | 1973-07-11 | 1975-04-03 | ||
| JPS5654737U (en) * | 1979-10-02 | 1981-05-13 | ||
| JPS573939U (en) * | 1980-06-10 | 1982-01-09 | ||
| JP2002243207A (en) * | 2001-02-13 | 2002-08-28 | Denso Corp | Refrigerating device |
| JP2002267257A (en) * | 2001-03-05 | 2002-09-18 | Denso Corp | Heat exchanger |
| JP2003240343A (en) * | 2002-02-12 | 2003-08-27 | Denso Corp | Heat exchanger and hot water supply system |
| JP2006084164A (en) * | 2004-09-17 | 2006-03-30 | Mitsubishi Electric Corp | Hot water supply outdoor machine and hot water supply air conditioner |
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