JP2008082684A - Heat pump - Google Patents

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JP2008082684A
JP2008082684A JP2006266756A JP2006266756A JP2008082684A JP 2008082684 A JP2008082684 A JP 2008082684A JP 2006266756 A JP2006266756 A JP 2006266756A JP 2006266756 A JP2006266756 A JP 2006266756A JP 2008082684 A JP2008082684 A JP 2008082684A
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Prior art keywords
condensed water
drain pipe
heater
heat pump
heat
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JP2006266756A
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Japanese (ja)
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Yasunobu Ito
康伸 伊藤
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Denso Corp
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Denso Corp
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Priority to JP2006266756A priority Critical patent/JP2008082684A/en
Priority to DE200710046009 priority patent/DE102007046009A1/en
Publication of JP2008082684A publication Critical patent/JP2008082684A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006—Preventing deposits of ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F24F2013/227—Condensate pipe for drainage of condensate from the evaporator
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the freezing of condensed water on the ground surface underneath the lower part of an outdoor unit. <P>SOLUTION: This heat pump comprising the outdoor unit 6 constituted to receive condensed water in a drain pan 61 is provided with drain piping 63 with its tip buried in the earth 72 to guide condensed water received in the drain pan 61, to the earth 72. Condensed water is thereby discharged into the earth 72 to prevent freezing of condensed water on the ground surface. In this case, the tip of the drain piping 63 is extended to a region where no freezing of condensed water occurs. Freezing of condensed water near the tip of the drain piping 63 is thereby prevented to positively discharge condensed water into the earth 72. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、低温側の熱を高温側に移動させるヒートポンプに関し、特に、ヒートポンプ式空調装置やヒートポンプ式給湯機に好適である。   The present invention relates to a heat pump that moves heat on a low temperature side to a high temperature side, and is particularly suitable for a heat pump air conditioner and a heat pump water heater.

従来、ヒートポンプにおける室外機の凝縮水の凍結防止に関しては、サイクルの熱を利用して凝縮水を加熱する方法（例えば、特許文献１参照）、ドレンパンにヒータを取付けて凝縮水を加熱する方法、ドレンパンの排水性を良くし凝縮水自体を凍結させない方法（例えば、特許文献２参照）、さらには架台にヒートポンプ式給湯機の室外機を搭載する方法等が知られている。
特開２００４−２１８８６１号公報 実開平６−１８８２３号公報 Conventionally, regarding prevention of freezing of condensed water of outdoor units in heat pumps, a method of heating condensed water using heat of a cycle (for example, refer to Patent Document 1), a method of heating a condensed water by attaching a heater to a drain pan, A method of improving drainage of the drain pan and preventing the condensed water itself from freezing (for example, see Patent Document 2), a method of mounting an outdoor unit of a heat pump type hot water heater on a gantry, and the like are known.
JP 2004-218861 A Japanese Utility Model Publication No. 6-18823.

しかしながら、上記の従来のヒートポンプは、室外機内での凝縮水の凍結は防止されるものの、室外機の下部の地表に溜まった凝縮水が凍結するという問題があった。   However, the conventional heat pump described above has a problem that although condensed water is prevented from freezing in the outdoor unit, condensed water accumulated on the ground surface below the outdoor unit is frozen.

本発明は上記点に鑑みて、室外機下部の地表での凝縮水の凍結を防止することを目的とする。   In view of the above points, an object of the present invention is to prevent freezing of condensed water on the ground surface below an outdoor unit.

本発明の第１の特徴では、凝縮水をドレンパン（６１）にて受けるようにした室外機（６）を備えるヒートポンプにおいて、先端が地中（７２）に埋設されて、ドレンパン（６１）にて受けた凝縮水を地中（７２）に導くドレン配管（６３）を備えている。   In the first feature of the present invention, in a heat pump including an outdoor unit (6) configured to receive condensed water in a drain pan (61), a tip is embedded in the ground (72), and the drain pan (61) A drain pipe (63) for guiding the condensed water received to the underground (72) is provided.

このような構成では、凝縮水が地中（７２）内に排出されるため、地表での凝縮水の凍結を防止することができる。   In such a configuration, since condensed water is discharged into the ground (72), it is possible to prevent the condensed water from freezing on the ground surface.

この場合、ドレン配管（６３）の先端を、凝縮水の凍結が発生しない領域まで延ばすことができる。   In this case, the tip of the drain pipe (63) can be extended to a region where the condensed water does not freeze.

このようにすれば、ドレン配管（６３）の先端付近での凝縮水の凍結を防止して、凝縮水を地中（７２）に確実に排出することができる。   If it does in this way, freezing of condensed water near the tip of drain piping (63) can be prevented, and condensed water can be discharged reliably in the ground (72).

この場合、ドレン配管（６３）内の凝縮水を加熱するヒータ（５）を備えることができる。   In this case, a heater (5) for heating the condensed water in the drain pipe (63) can be provided.

このようにすれば、ドレン配管（６３）内での凝縮水の凍結を防止して、凝縮水を地中（７２）に確実に排出することができる。   If it does in this way, freezing of condensed water in drain piping (63) can be prevented, and condensed water can be discharged certainly in the ground (72).

また、ドレン配管（６３）の外側に断熱材（８）を備えることができる。このようにすれば、ドレン配管（６３）内での凝縮水の凍結をより確実に防止することができる。   Moreover, a heat insulating material (8) can be provided outside the drain pipe (63). In this way, it is possible to more reliably prevent the condensed water from freezing in the drain pipe (63).

本発明の第２の特徴では、凝縮水をドレンパン（６１）にて受けるようにした室外機（６）を備えるヒートポンプにおいて、ドレンパン（６１）にて受けた凝縮水を室外機（６）の下部を除く場所に導くドレン配管（６３）と、このドレン配管（６３）内の凝縮水を加熱するヒータ（５）とを備えている。   In the second feature of the present invention, in the heat pump including the outdoor unit (6) configured to receive the condensed water by the drain pan (61), the condensed water received by the drain pan (61) is disposed below the outdoor unit (6). A drain pipe (63) leading to a place other than the drain pipe and a heater (5) for heating the condensed water in the drain pipe (63) are provided.

このような構成では、凝縮水は室外機（６）の下部を除く場所に導かれるため、室外機（６）下部の地表での凝縮水の凍結を防止することができる。この際、ヒータ（５）にてドレン配管（６３）内での凝縮水の凍結を防止して、凝縮水を室外機（６）の下部を除く場所に確実に排出することができる。   In such a configuration, since the condensed water is guided to a place other than the lower part of the outdoor unit (6), it is possible to prevent the condensed water from freezing on the ground surface below the outdoor unit (6). At this time, the condensed water can be prevented from freezing in the drain pipe (63) by the heater (5), and the condensed water can be reliably discharged to a place other than the lower part of the outdoor unit (6).

この場合においても、ドレン配管（６３）の外側に断熱材（８）を備えることができる。このようにすれば、ドレン配管（６３）内での凝縮水の凍結をより確実に防止することができる。   Also in this case, a heat insulating material (8) can be provided outside the drain pipe (63). In this way, it is possible to more reliably prevent the condensed water from freezing in the drain pipe (63).

本発明の第３の特徴では、本発明の第１の特徴を備えるヒートポンプの設置方法であって、ドレン配管（６３）の先端部の周囲を砂利または砂（７３）で覆っている。   According to a third aspect of the present invention, there is provided a heat pump installation method having the first aspect of the present invention, wherein the periphery of the drain pipe (63) is covered with gravel or sand (73).

このような方法では、ドレン配管（６３）から排出された凝縮水が砂利または砂（７３）の層に浸透して、ドレン配管（６３）の先端付近での凝縮水の凍結がより確実に防止される。   In such a method, the condensed water discharged from the drain pipe (63) penetrates into the gravel or sand (73) layer, and the freezing of the condensed water near the tip of the drain pipe (63) is more reliably prevented. Is done.

なお、特許請求の範囲およびこの欄で記載した各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each means described in a claim and this column shows the correspondence with the specific means as described in embodiment mentioned later.

（第１実施形態）
本発明の第１実施形態について説明する。図１は本実施形態に係るヒートポンプ式給湯機の構成を示す図、図２は室外機を一部断面で示す模式図である。 (First embodiment)
A first embodiment of the present invention will be described. FIG. 1 is a diagram illustrating a configuration of a heat pump type hot water heater according to the present embodiment, and FIG. 2 is a schematic diagram illustrating a partial cross section of an outdoor unit.

ヒートポンプ式給湯器は、図１に示すように、圧縮機１１、放熱用熱交換器をなす水−冷媒熱交換器１２、減圧器１３、吸熱用熱交換器をなす蒸発器１４、アキュムレータ１５、貯湯タンク１６等からなるもので、圧縮機１１にて圧縮されて高温となった冷媒と給湯水とを水−冷媒熱交換器１２で熱交換して給湯水を加熱し、減圧器１３にて減圧された冷媒を蒸発器１４にて蒸発させて外気から吸熱する。アキュムレータ１５は、余剰冷媒を液相冷媒として蓄えるとともに、気相冷媒と冷凍機油を圧縮機１１に供給する。貯湯タンク１６は、水−冷媒熱交換器１２で熱交換して加熱された給湯水を蓄える。   As shown in FIG. 1, the heat pump water heater includes a compressor 11, a water-refrigerant heat exchanger 12 that forms a heat exchanger for heat dissipation, a decompressor 13, an evaporator 14 that forms a heat exchanger for heat absorption, an accumulator 15, It consists of a hot water storage tank 16 or the like, and heat is exchanged between the refrigerant, which has been compressed by the compressor 11, and hot water, with the water-refrigerant heat exchanger 12, and the hot water is heated. The decompressed refrigerant is evaporated by the evaporator 14 and absorbs heat from the outside air. The accumulator 15 stores the surplus refrigerant as a liquid phase refrigerant and supplies the gas phase refrigerant and the refrigerating machine oil to the compressor 11. The hot water storage tank 16 stores hot water heated by heat exchange with the water-refrigerant heat exchanger 12.

電子制御装置２には、外気温度を検出する外気温センサ３の出力信号、及び給湯水温度に関する信号等が入力されており、電子制御装置２は、これら信号等に基づいて予め設定されたプログラムに従って減圧器１３の絞り開度、圧縮機１１の稼働率、第１ヒータ４（詳細後述）への通電を制御する。   The electronic control device 2 receives an output signal from the outside air temperature sensor 3 that detects the outside air temperature, a signal related to the hot water temperature, and the like, and the electronic control device 2 uses a program set in advance based on these signals and the like. The throttle opening of the decompressor 13, the operating rate of the compressor 11, and energization to the first heater 4 (details will be described later) are controlled.

図２に示すように、ヒートポンプ式給湯器の室外機６は、ブロックや樹脂からなる基礎７１の上に設置、固定される。   As shown in FIG. 2, the outdoor unit 6 of the heat pump type hot water heater is installed and fixed on a base 71 made of a block or resin.

室外機６は、蒸発器１４等が内部に収納されている。蒸発器１４の下方には、蒸発器１４の表面に発生した凝縮水を溜めるドレンパン６１が配置されて、ドレンパン６１の最下位部には、ドレンパン６１内の凝縮水を排出するドレンポート６２が形成されている。   In the outdoor unit 6, the evaporator 14 and the like are housed inside. A drain pan 61 for storing condensed water generated on the surface of the evaporator 14 is disposed below the evaporator 14, and a drain port 62 for discharging the condensed water in the drain pan 61 is formed at the lowest part of the drain pan 61. Has been.

このドレンポート６２には、ドレンパン６１にて受けた凝縮水を地中７２に導く樹脂もしくは金属製のドレン配管６３が接続されており、ドレン配管６３の先端は室外機６のほぼ下部の地中７２に埋設されている。より詳細には、冬季において凝縮水の凍結が発生しなくなる地中７２の深さを凍結深度Ｄとすると、ドレン配管６３の先端は、凍結深度Ｄ以上の深さまで延びている。因みに、札幌の場合、凍結深度Ｄは約６０ｃｍである。ドレン配管６３の埋設は施工業者によって行われ、その際、ドレン配管６３の先端部の周囲に、凝縮水の浸透を促すために砂利、砂、石７３が敷きつめられている。   The drain port 62 is connected to a drain pipe 63 made of resin or metal that guides the condensed water received by the drain pan 61 to the ground 72. The drain pipe 63 has a tip that is substantially underground in the lower part of the outdoor unit 6. 72 is buried. More specifically, assuming that the depth of the underground 72 where the condensed water does not freeze in winter is the freezing depth D, the tip of the drain pipe 63 extends to a depth equal to or higher than the freezing depth D. Incidentally, in the case of Sapporo, the freezing depth D is about 60 cm. The drain pipe 63 is buried by a contractor. At that time, gravel, sand, and stones 73 are spread around the front end of the drain pipe 63 in order to promote the penetration of condensed water.

電気ヒータからなる第１ヒータ４は、ドレンパン６１の下方側に貼付されて、ドレンパン６１内に溜まった凝縮水をドレンパン６１の外側から加熱するようになっている。   The first heater 4, which is an electric heater, is attached to the lower side of the drain pan 61 and heats the condensed water accumulated in the drain pan 61 from the outside of the drain pan 61.

ドレン配管６３内において凝縮水が流れる通路には、ドレン配管６３内の凝縮水を加熱する電気ヒータからなる第２ヒータ５が配置されている。第２ヒータ５は、紐状ないしは棒状に形成されており、ドレン配管６３の先端まで延びている。第２ヒータ５は、いわゆる自己制御ヒータであり、ヒータ自身が温度検知機能を有し、ヒータの表面温度が一定になるものである。そして、この第２ヒータ５は、室外機６内の電源、もしくは家屋などの電源に接続されている間は、常時作動するようになっている。   A second heater 5 composed of an electric heater for heating the condensed water in the drain pipe 63 is disposed in a passage through which the condensed water flows in the drain pipe 63. The second heater 5 is formed in a string shape or a rod shape, and extends to the tip of the drain pipe 63. The second heater 5 is a so-called self-control heater, and the heater itself has a temperature detection function, and the surface temperature of the heater becomes constant. The second heater 5 is always operated while being connected to a power source in the outdoor unit 6 or a power source such as a house.

本実施形態のヒートポンプ式給湯機では、電子制御装置２は、外気温度（外気温センサ３の検出温度）が例えば摂氏０度以下になったときに第１ヒータ４へ通電されるように制御し、これにより、第１ヒータ４にてドレンパン６１内の凝縮水が加熱されるので、ドレンパン６１内での凝縮水の凍結が防止される。なお、第１ヒータ４の通電開始の外気温度は、自由に設定可能である。   In the heat pump type water heater of the present embodiment, the electronic control device 2 controls the first heater 4 to be energized when the outside air temperature (the temperature detected by the outside air temperature sensor 3) becomes, for example, 0 degrees Celsius or less. Thus, the condensed water in the drain pan 61 is heated by the first heater 4, so that the condensed water in the drain pan 61 is prevented from freezing. Note that the outside air temperature at the start of energization of the first heater 4 can be set freely.

また、第２ヒータ５が電源に接続されている間は、第２ヒータ５によってドレン配管６３内の凝縮水が加熱されるので、ドレン配管６３内での凝縮水の凍結が防止される。   In addition, while the second heater 5 is connected to the power source, the condensed water in the drain pipe 63 is heated by the second heater 5, so that the condensed water in the drain pipe 63 is prevented from freezing.

したがって、蒸発器１４の表面に発生した凝縮水は、ドレンパン６１内やドレン配管６３内で凍結することなく、ドレンパン６１やドレン配管６３に案内されて地中７２に導かれる。   Therefore, the condensed water generated on the surface of the evaporator 14 is guided to the drain pan 61 and the drain pipe 63 and led to the underground 72 without being frozen in the drain pan 61 and the drain pipe 63.

このように、凝縮水は地中７２内に排出されるため、室外機６の下部の地表に凝縮水が溜まることがなく、室外機６の下部の見栄えが確保される。また、凝縮水は地中７２内に排出されるため、地表での凝縮水の凍結が防止され、凍結による人の転倒等が防止され、人の安全が確保される。   In this way, since the condensed water is discharged into the underground 72, the condensed water does not accumulate on the ground surface below the outdoor unit 6, and the appearance of the lower part of the outdoor unit 6 is ensured. In addition, since the condensed water is discharged into the underground 72, the condensed water is prevented from freezing on the ground surface, so that the person is not overturned due to the freezing, and human safety is ensured.

この際、ドレン配管６３の先端は、凍結深度Ｄ以上の深さまで延ばされているため、ドレン配管６３の先端付近での凝縮水の凍結を防止して、凝縮水を地中７２に確実に排出することができる。   At this time, since the tip of the drain pipe 63 is extended to a depth equal to or greater than the freezing depth D, the condensed water is prevented from freezing near the tip of the drain pipe 63, and the condensed water is reliably transferred to the underground 72. Can be discharged.

さらに、ドレン配管６３の先端部の周囲に砂利、砂、石７３が敷きつめられているため、ドレン配管６３から排出された凝縮水が砂利、砂、石７３の層に浸透して、ドレン配管６３の先端付近での凝縮水の凍結がより確実に防止される。   Further, since gravel, sand, and stone 73 are spread around the tip of the drain pipe 63, the condensed water discharged from the drain pipe 63 penetrates into the gravel, sand, and stone 73 layers, and the drain pipe 63 Freezing of the condensed water near the tip of the water is more reliably prevented.

（第２実施形態）
本発明の第２実施形態について説明する。図３は本実施形態に係るヒートポンプ式給湯機における室外機を示す模式図、図４はドレン配管６３の外観を示す図である。第１実施形態と同一もしくは均等部分には同一の符号を付し、その説明を省略する。 (Second Embodiment)
A second embodiment of the present invention will be described. FIG. 3 is a schematic view showing an outdoor unit in the heat pump type hot water heater according to the present embodiment, and FIG. 4 is a view showing an appearance of the drain pipe 63. The same or equivalent parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

図３、図４に示すように、本実施形態では、第２ヒータ５はドレン配管６３の外側に配置されている。より詳細には、第２ヒータ５は、テープ状に形成されたいわゆる自己制御ヒータからなり、ドレン配管６３の長手方向のほぼ全域に渡って螺旋状に巻かれている。   As shown in FIGS. 3 and 4, in the present embodiment, the second heater 5 is disposed outside the drain pipe 63. More specifically, the second heater 5 is a so-called self-control heater formed in a tape shape, and is wound spirally over almost the entire length of the drain pipe 63.

そして、第２ヒータ５が電源に接続されている間は、第２ヒータ５によって、ドレン配管６３を介してドレン配管６３内の凝縮水が加熱されるので、ドレン配管６３内での凝縮水の凍結が防止される。   While the second heater 5 is connected to the power source, the condensed water in the drain pipe 63 is heated by the second heater 5 through the drain pipe 63, so the condensed water in the drain pipe 63 is heated. Freezing is prevented.

（第３実施形態）
本発明の第３実施形態について説明する。図５は本実施形態に係るヒートポンプ式給湯機におけるドレン配管６３の断面図である。 (Third embodiment)
A third embodiment of the present invention will be described. FIG. 5 is a cross-sectional view of the drain pipe 63 in the heat pump type water heater according to the present embodiment.

図５に示すように、本実施形態の第２ヒータ５は、ヒータ線からなり、ドレン配管６３に埋設されている。また、ドレン配管６３の外側には、発泡樹脂等の熱伝導率が小さい材質よりなる断熱材８が巻かれている。第２ヒータ５および断熱材８は、ドレン配管６３の長手方向のほぼ全域に渡って配置されている。   As shown in FIG. 5, the second heater 5 of the present embodiment is composed of a heater wire and is embedded in the drain pipe 63. A heat insulating material 8 made of a material having a low thermal conductivity such as foamed resin is wound around the drain pipe 63. The second heater 5 and the heat insulating material 8 are disposed over almost the entire region of the drain pipe 63 in the longitudinal direction.

そして、第２ヒータ５が電源に接続されている間は、第２ヒータ５によって、ドレン配管６３を介してドレン配管６３内の凝縮水が加熱されるので、ドレン配管６３内での凝縮水の凍結が防止される。   While the second heater 5 is connected to the power source, the condensed water in the drain pipe 63 is heated by the second heater 5 through the drain pipe 63, so the condensed water in the drain pipe 63 is heated. Freezing is prevented.

また、断熱材８によって、第２ヒータ５で発生した熱が外気中に放熱されてしまうことを防止しているので、第２ヒータ５の熱によりドレン配管６３内の凝縮水を効率よく加熱することができる。   Further, since the heat generated by the second heater 5 is prevented from being radiated into the outside air by the heat insulating material 8, the condensed water in the drain pipe 63 is efficiently heated by the heat of the second heater 5. be able to.

（第４実施形態）
本発明の第４実施形態について説明する。図６は本実施形態に係るヒートポンプ式給湯機における室外機を一部断面で示す模式図である。第１実施形態と同一もしくは均等部分には同一の符号を付し、その説明を省略する。 (Fourth embodiment)
A fourth embodiment of the present invention will be described. FIG. 6 is a schematic diagram showing a partial cross section of the outdoor unit in the heat pump type hot water heater according to the present embodiment. The same or equivalent parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

第１実施形態では、室外機６のほぼ下部の地中７２に凝縮水を導くようにしたが、本実施形態は、室外機６から離れた位置に凝縮水を導くようにしたものであり、例えば室外機６の下部がコンクリートで覆われていて、ドレン配管６３の先端を室外機６の下部の地中７２に埋設するのが困難な場合に好適である。   In the first embodiment, the condensed water is guided to the underground 72 at substantially the lower part of the outdoor unit 6. However, in this embodiment, the condensed water is guided to a position away from the outdoor unit 6. For example, it is suitable when the lower part of the outdoor unit 6 is covered with concrete and it is difficult to bury the tip of the drain pipe 63 in the underground 72 below the outdoor unit 6.

図６に示すように、本実施形態のドレン配管６３は、室外機６の下部を除く場所で且つ凝縮水の排水に影響のない場所である排水溝７４まで延びている。また、ドレン配管６３内には、第２ヒータ５が配置されている。   As shown in FIG. 6, the drain pipe 63 of the present embodiment extends to a drainage groove 74 that is a place excluding the lower part of the outdoor unit 6 and has no influence on the drainage of condensed water. Further, the second heater 5 is disposed in the drain pipe 63.

本実施形態によると、凝縮水は排水溝７４に排出されるため、室外機６の下部の地表に凝縮水が溜まることがなく、室外機６の下部の見栄えが確保される。また、凝縮水は排水溝７４に排出されるため、地表での凝縮水の凍結が防止され、凍結による人の転倒等が防止され、人の安全が確保される。   According to the present embodiment, since the condensed water is discharged into the drainage groove 74, the condensed water does not accumulate on the ground surface below the outdoor unit 6, and the appearance of the lower part of the outdoor unit 6 is ensured. Further, since the condensed water is discharged to the drainage groove 74, the condensed water is prevented from freezing on the ground surface, so that the person is not overturned due to the freezing, and human safety is ensured.

この際、第２ヒータ５によってドレン配管６３内での凝縮水の凍結が防止されるため、凝縮水を排水溝７４に確実に排出することができる。   At this time, since the condensed water in the drain pipe 63 is prevented from being frozen by the second heater 5, the condensed water can be reliably discharged into the drain groove 74.

なお、ドレン配管６３は、図６に一点鎖線で示すように、中間部を地中７２に埋設して、先端を排水溝７４に臨ませてもよい。   Note that the drain pipe 63 may have an intermediate portion embedded in the ground 72 and a tip thereof facing the drain groove 74 as indicated by a one-dot chain line in FIG.

（他の実施形態）
上記第１〜第３実施形態のヒートポンプ式給湯機では、ドレン配管６３内に凝縮水が滞留しない構成にしたり或いは撥水性を持たせるなどにより、ドレン配管６３内での凝縮水の凍結の心配がなければ、第２ヒータ５は用いなくてもよい。 (Other embodiments)
In the heat pump type water heaters of the first to third embodiments, there is a concern that the condensed water in the drain pipe 63 may freeze due to a configuration in which the condensed water does not stay in the drain pipe 63 or water repellency. If not, the second heater 5 may not be used.

また、上記第１〜第３実施形態では、ドレン配管６３の先端部の周囲に砂利、砂、石７３等を敷きつめたが、砂利、砂、石７３等を敷きつめなくてもよい。   Moreover, in the said 1st-3rd embodiment, gravel, sand, stone 73 grade | etc., Was spread around the front-end | tip part of the drain piping 63, but gravel, sand, stone 73 grade | etc., Need not be spread.

また、上記各実施形態では、第２ヒータ５は自己制御式としたが、第２ヒータ５は自己制御式でなくてもよい。その場合、人がヒータ温度を調整してもよいし、或いは人がヒータへの通電を断続してもよいし、さらには、外気温センサ３で検出した外気温度が例えば摂氏０度以下になったときに、電子制御装置２が第２ヒータ５へ通電するように制御してもよい。   Moreover, in each said embodiment, although the 2nd heater 5 was made into the self-control type, the 2nd heater 5 does not need to be a self-control type. In that case, a person may adjust the heater temperature, or a person may intermittently energize the heater, and the outside air temperature detected by the outside air temperature sensor 3 is, for example, 0 degrees Celsius or less. The electronic control device 2 may be controlled so that the second heater 5 is energized.

また、上記各実施形態では、ヒートポンプ式給湯機を示したが、本発明は、ヒートポンプ式空調装置にも適用することができる。   Moreover, in each said embodiment, although the heat pump type hot water heater was shown, this invention is applicable also to a heat pump type air conditioner.

また、第３実施形態で用いた断熱材８は、他の実施形態のヒートポンプにも用いることができる。   Moreover, the heat insulating material 8 used in 3rd Embodiment can be used also for the heat pump of other embodiment.

本発明の第１実施形態に係るヒートポンプ式給湯機の構成を示す図である。It is a figure which shows the structure of the heat pump type water heater based on 1st Embodiment of this invention. 図１のヒートポンプ式給湯機における室外機を一部断面で示す模式図である。It is a schematic diagram which shows the outdoor unit in the heat pump type water heater of FIG. 本発明の第２実施形態に係るヒートポンプ式給湯機における室外機を示す模式図である。It is a schematic diagram which shows the outdoor unit in the heat pump type water heater which concerns on 2nd Embodiment of this invention. 図３のドレン配管６３の外観を示す図である。It is a figure which shows the external appearance of the drain piping 63 of FIG. 本発明の第３実施形態にに係るヒートポンプ式給湯機におけるドレン配管６３の断面図である。It is sectional drawing of the drain piping 63 in the heat pump type water heater which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係るヒートポンプ式給湯機における室外機を一部断面で示す模式図である。It is a schematic diagram which shows the outdoor unit in the heat pump type water heater which concerns on 4th Embodiment of this invention in a partial cross section.

符号の説明Explanation of symbols

６…室外機、１４…吸熱用熱交換器、６１…ドレンパン、６３…ドレン配管、７２…地中。   6 ... outdoor unit, 14 ... heat exchanger for heat absorption, 61 ... drain pan, 63 ... drain piping, 72 ... underground.

Claims (9)

吸熱用熱交換器（１４）にて冷媒と外気との間で熱交換を行い、この吸熱用熱交換器（１４）で発生した凝縮水をドレンパン（６１）にて受けるようにした室外機（６）を備えるヒートポンプにおいて、
先端が地中（７２）に埋設されて、前記ドレンパン（６１）にて受けた凝縮水を地中（７２）に導くドレン配管（６３）を備えることを特徴とするヒートポンプ。 An outdoor unit that exchanges heat between the refrigerant and the outside air in the heat absorption heat exchanger (14) and receives the condensed water generated in the heat absorption heat exchanger (14) in the drain pan (61) ( 6) In a heat pump comprising:
A heat pump comprising a drain pipe (63) having a tip embedded in the ground (72) and guiding the condensed water received by the drain pan (61) to the ground (72). 前記ドレン配管（６３）の先端は、前記凝縮水の凍結が発生しない領域まで延びていることを特徴とする請求項１に記載のヒートポンプ。 The heat pump according to claim 1, wherein a tip of the drain pipe (63) extends to a region where freezing of the condensed water does not occur. 前記ドレン配管（６３）内の凝縮水を加熱するヒータ（５）を備えることを特徴とする請求項１または２に記載のヒートポンプ。 The heat pump according to claim 1 or 2, further comprising a heater (5) for heating the condensed water in the drain pipe (63). 吸熱用熱交換器（１４）にて冷媒と外気との間で熱交換を行い、この吸熱用熱交換器（１４）で発生した凝縮水をドレンパン（６１）にて受けるようにした室外機（６）を備えるヒートポンプにおいて、
前記ドレンパン（６１）にて受けた凝縮水を前記室外機（６）の下部を除く場所に導くドレン配管（６３）と、
このドレン配管（６３）内の凝縮水を加熱するヒータ（５）とを備えることを特徴とするヒートポンプ。 An outdoor unit that exchanges heat between the refrigerant and the outside air in the heat absorption heat exchanger (14) and receives the condensed water generated in the heat absorption heat exchanger (14) in the drain pan (61) ( 6) In a heat pump comprising:
A drain pipe (63) for guiding the condensed water received by the drain pan (61) to a place excluding the lower part of the outdoor unit (6);
A heat pump comprising: a heater (5) for heating the condensed water in the drain pipe (63). 前記ヒータ（５）は、前記ドレン配管（６３）内において凝縮水が流れる通路に配置されていることを特徴とする請求項３または４に記載のヒートポンプ。 The heat pump according to claim 3 or 4, wherein the heater (5) is arranged in a passage through which condensed water flows in the drain pipe (63). 前記ヒータ（５）は、前記ドレン配管（６３）の外側に配置されていることを特徴とする請求項３または４に記載のヒートポンプ。 The heat pump according to claim 3 or 4, wherein the heater (5) is disposed outside the drain pipe (63). 前記ヒータ（５）は、前記ドレン配管（６３）に埋設されていることを特徴とする請求項３または４に記載のヒートポンプ。 The heat pump according to claim 3 or 4, wherein the heater (5) is embedded in the drain pipe (63). 前記ドレン配管（６３）の外側に断熱材（８）を備えることを特徴とする請求項１ないし７のいずれか１つに記載のヒートポンプ。 The heat pump according to any one of claims 1 to 7, further comprising a heat insulating material (8) outside the drain pipe (63). 請求項１ないし３のいずれか１つに記載のヒートポンプを設置する方法であって、前記ドレン配管（６３）の先端部の周囲は砂利または砂（７３）で覆われていることを特徴とするヒートポンプの設置方法。 It is a method of installing the heat pump as described in any one of Claim 1 thru | or 3, Comprising: The circumference | surroundings of the front-end | tip part of the said drain piping (63) are covered with gravel or sand (73), It is characterized by the above-mentioned. How to install a heat pump.
JP2006266756A 2006-09-29 2006-09-29 Heat pump Pending JP2008082684A (en)

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