WO2013088713A1 - Heater and outdoor unit for refrigeration unit provided with heater - Google Patents

Heater and outdoor unit for refrigeration unit provided with heater Download PDF

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Publication number
WO2013088713A1
WO2013088713A1 PCT/JP2012/007949 JP2012007949W WO2013088713A1 WO 2013088713 A1 WO2013088713 A1 WO 2013088713A1 JP 2012007949 W JP2012007949 W JP 2012007949W WO 2013088713 A1 WO2013088713 A1 WO 2013088713A1
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Prior art keywords
heater
heat exchanger
outdoor heat
outdoor
casing
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PCT/JP2012/007949
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French (fr)
Japanese (ja)
Inventor
彬 羅
竿尾　忠
幹夫 賀川
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ダイキン工業株式会社
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Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN201280058436.5A priority Critical patent/CN103988026B/en
Priority to KR1020147018993A priority patent/KR101428444B1/en
Priority to EP12857382.1A priority patent/EP2792955B1/en
Priority to US14/364,617 priority patent/US20140298844A1/en
Priority to AU2012353915A priority patent/AU2012353915B2/en
Publication of WO2013088713A1 publication Critical patent/WO2013088713A1/en

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/36—Drip trays for outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/34—Heater, e.g. gas burner, electric air heater

Definitions

  • the present invention relates to a heater for preventing freezing of drain water and an outdoor unit of a refrigeration apparatus having the heater.
  • a heater is provided to prevent freezing of drain water of an outdoor heat exchanger (see, for example, Patent Document 1 below).
  • a heater is provided on the outdoor unit base and below the outdoor heat exchanger.
  • the heater is formed in an L-shaped frame shape along the shape of the L-shaped outdoor heat exchanger in plan view. With such a configuration, the drain water of the outdoor heat exchanger falls on the outdoor unit base, is heated by the heater, and is discharged outside through a drain hole formed in the outdoor unit base without freezing.
  • some of the outdoor heat exchangers have four heat exchange surfaces corresponding to the four side surfaces of the casing in order to increase the heat exchange area (hereinafter simply referred to as “four-side heat exchange”). is there.
  • the heater for preventing the drain water of the outdoor heat exchanger from being frozen is formed along the outdoor heat exchanger and has a rectangular frame shape.
  • the four-surface heat exchange may be caught, and the installation work is complicated.
  • the first invention is a casing (20) having four side surfaces (4), and four heat exchange surfaces (inside the casing (20), corresponding to the side surfaces (4) of the casing (20)).
  • a rectangular along the lower end portion of the outdoor heat exchanger (30) of the outdoor unit (10) of the refrigeration apparatus having an outdoor heat exchanger (30) having an opening (3a) on the side surface with 30a) Is a heater for preventing the drain water of the outdoor heat exchanger (30) from freezing, and has a folded portion (70) for folding back in the longitudinal direction.
  • the heater (75) having a rectangular frame shape provided in the has a folded portion (70) for folding in the longitudinal direction. Therefore, the heater (75) is configured to be folded back in the longitudinal direction by folding the folded portion (70), and in the folded state, the heater (75) is heated from the opening (3a) formed on the side surface of the outdoor heat exchanger (30). It is inserted inside the exchanger (30) and installed along the lower end.
  • the first heater section (76) and the second heater section (77) arranged in the longitudinal direction are provided, and the turn-up section (70) includes the first heater section (76). And wiring (78, 79) connecting the second heater section (77).
  • each of the heater portions (76, 77) includes a main body portion (76a, 77a) extending along the bottom plate (22) of the casing (20), and the main body portion. (76a, 77a) each having an end (76b, 77b) formed so as to be bent upward and connected to the wiring (78, 79).
  • each heater portion (76, 77) has an end portion (76b, 77b) to which the wiring (78, 79) to be the folded portion (70) is connected, and the bottom plate (22) of the casing (20). ) So as to be bent upward with respect to the main body portions (76a, 77a) extending along. Therefore, when the main body (76a, 77a) of each heater (76, 77) is attached to the bottom plate (22) of the casing (20) of the outdoor unit (10), the end to which the wiring (78, 79) is connected (76b, 77b) rises upward from the bottom plate (22). That is, since the wiring (78, 79) connecting the heater parts (76, 77) is not arranged on the bottom plate (22) of the casing (20) that receives the drain water, the drain water adheres to the wiring (78, 79). There is nothing.
  • the folded back heater (75) after inserting it inside the outdoor heat exchanger (30), it is attached to the lower end of the outdoor heat exchanger (30) without being caught on the outdoor heat exchanger (30).
  • the heater (75) can be easily attached along the line. That is, the heater for the outdoor unit of the refrigeration apparatus can be configured to be easily attached.
  • the four upper side panels (23a) are attached to each support (21) so as to surround the outdoor fan (40).
  • An upper space (2b) in which the two outdoor fans (40) are accommodated is formed inside the upper side panel (23a) (see FIGS. 2 and 3).
  • the heater (75) includes an inclined portion (71b) inside the drainage passage (71) and an inner portion of the tapered side portion (73b) of the installation base (73). It is provided in the position pinched
  • the heater (75) has two heater parts, a first heater part (76) and a second heater part (77). That is, the heater (75) has a divided structure divided into two heater portions.
  • a 1st heater part (76) is L-shaped so that the heat exchange surface (30a) which comprises the left side surface and back surface of the four heat exchange surfaces (30a) of an outdoor heat exchanger (30) may be met. Is formed.
  • the second heater part (77) is along the heat exchange surface (30a) that constitutes the back surface, the right side surface, and the front surface of the four heat exchange surfaces (30a) of the outdoor heat exchanger (30). It is formed in a U shape.
  • the heater (75) is energized so that the drain water of the outdoor heat exchanger (30) does not freeze.
  • the drain water of the outdoor heat exchanger (30) falls downward and is received by the drainage passage (71) formed in the bottom frame (22). A part of the drain water flows into the drainage passageway (71) through the drainage hole (74) of the installation base (73) where the outdoor heat exchanger (30) is installed.
  • the heater (75) is energized, the drain water in the drainage passage (71) is heated to prevent freezing. And the drain water in a drainage channel (71) is discharged
  • the heater (75) includes the first heater part (76) and the second heater part (77) arranged in the longitudinal direction, and the first heater part (76) and the second heater are provided.
  • the wiring (78, 79) connecting the part (77) is configured to be the folded part (70). Therefore, the heater (75) that can be folded back in the longitudinal direction can be configured with an easy configuration.
  • the end portions (76b, 77b) to which the wirings (78, 79) to be the folded portions (70) are connected in the heater portions (76, 77) are connected to the bottom of the casing (20).
  • the main body (76a, 77a) provided along the frame (22) was bent upward. Therefore, when the heater (75) is attached to the bottom frame (22) of the outdoor unit (10), the heater prevents the drain water from adhering to the wiring (78,79) connecting each heater section (76,77). (75) can be configured.
  • the compressors (5a, 5b) are installed inside the outdoor heat exchanger (30).
  • the heater (75) may catch not only the outdoor heat exchanger (30) but also the compressor (5a, 5b) inside it. Work becomes more complicated.
  • such an outdoor unit (10) is provided with the heater (75) that can be folded back in the longitudinal direction as described above. Therefore, the compressor (5a, 5b) is inserted into the outdoor heat exchanger (30) through the opening (3a) formed on the side surface of the outdoor heat exchanger (30) with the heater (75) folded back.
  • the heater (75) can be easily installed along the lower end of the outdoor heat exchanger (30) while easily avoiding contact with the heat exchanger.
  • the arrangement of the refrigerant circuit device in the above embodiment is merely an example, and can be changed as appropriate.
  • the compressor (5a, 5b) or the like may not be disposed inside the outdoor heat exchanger (30).
  • the present invention is useful for a heater that prevents freezing of drain water and an outdoor unit of a refrigeration apparatus including the heater.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

An outdoor unit (10) is provided with: a casing (20) having four sides (4); and an outdoor heat exchanger (30) that is disposed inside the casing (20), has four heat exchanging surfaces (30a) corresponding to each side (4) of said casing (20), and has an opening (3a) formed on the sides. A heater (75), which is formed in the shape of a rectangular frame along the lower end of the outdoor heat exchanger (30) of the outdoor unit (10), for preventing drain water in the outdoor heat exchanger (30) from freezing is provided with folded sections (70) for folding the heater (75) in the longitudinal direction.

Description

ヒータ及びそれを備えた冷凍装置の室外ユニットHeater and outdoor unit of refrigeration apparatus provided with the same
　　本発明は、ドレン水の凍結を防止するためのヒータ及びそれを備えた冷凍装置の室外ユニットに関するものである。 The present invention relates to a heater for preventing freezing of drain water and an outdoor unit of a refrigeration apparatus having the heater.
　　従来より、冷凍装置の室外機において、室外熱交換器のドレン水の凍結を防止するためにヒータが設けられている（例えば、下記特許文献１を参照）。特許文献１では、室外機ベース上であって室外熱交換器の下方にヒータが設けられている。ヒータは、平面視においてＬ字形状の室外熱交換器の形状に沿ったＬ字形状の枠状に形成されている。このような構成により、室外熱交換器のドレン水は室外機ベース上に落下してヒータによって加熱され、凍結することなく室外機ベースに形成されたドレン穴から外部へ排出される。 Conventionally, in an outdoor unit of a refrigeration apparatus, a heater is provided to prevent freezing of drain water of an outdoor heat exchanger (see, for example, Patent Document 1 below). In Patent Document 1, a heater is provided on the outdoor unit base and below the outdoor heat exchanger. The heater is formed in an L-shaped frame shape along the shape of the L-shaped outdoor heat exchanger in plan view. With such a configuration, the drain water of the outdoor heat exchanger falls on the outdoor unit base, is heated by the heater, and is discharged outside through a drain hole formed in the outdoor unit base without freezing.
特開２００４－６９２２０号公報JP 2004-69220 A
　　ところで、上記室外熱交換器の中には、熱交換面積を大きくするためにケーシングの４つの側面に対応する４つの熱交換面を有するもの（以下では単に「４面熱交」と称する）がある。このような室外熱交換器を有する場合、該室外熱交換器のドレン水の凍結を防止するためのヒータは、該室外熱交換器に沿うように形成されて矩形枠状の形状となる。このような４面熱交に沿った形状のヒータでは、例えば、後付けやメンテナンス等の理由でヒータを取り付ける際に、４面熱交にひっかかるおそれがあり、取り付け作業が煩雑になっていた。 By the way, some of the outdoor heat exchangers have four heat exchange surfaces corresponding to the four side surfaces of the casing in order to increase the heat exchange area (hereinafter simply referred to as “four-side heat exchange”). is there. When such an outdoor heat exchanger is provided, the heater for preventing the drain water of the outdoor heat exchanger from being frozen is formed along the outdoor heat exchanger and has a rectangular frame shape. In such a heater having a shape along the four-surface heat exchange, for example, when the heater is attached for reasons such as retrofitting or maintenance, the four-surface heat exchange may be caught, and the installation work is complicated.
　　本発明は、かかる点に鑑みてなされたものであり、その目的は、冷凍装置の室外ユニット用のヒータを取り付け容易な形態に構成することにある。 The present invention has been made in view of such a point, and an object thereof is to configure a heater for an outdoor unit of a refrigeration apparatus so that it can be easily attached.
　　第１の発明は、４つの側面（4）を有するケーシング（20）と、該ケーシング（20）内に設けられて該ケーシング（20）の各側面（4）に対応する４つの熱交換面（30a）を有して側面に開口（3a）が形成された室外熱交換器（30）とを備えた冷凍装置の室外ユニット（10）の上記室外熱交換器（30）の下端部に沿う矩形の枠状に形成されて上記室外熱交換器（30）のドレン水の凍結を防止するためのヒータであって、長手方向に折り返すための折返し部（70）を有している。 The first invention is a casing (20) having four side surfaces (4), and four heat exchange surfaces (inside the casing (20), corresponding to the side surfaces (4) of the casing (20)). A rectangular along the lower end portion of the outdoor heat exchanger (30) of the outdoor unit (10) of the refrigeration apparatus having an outdoor heat exchanger (30) having an opening (3a) on the side surface with 30a) Is a heater for preventing the drain water of the outdoor heat exchanger (30) from freezing, and has a folded portion (70) for folding back in the longitudinal direction.
　　第１の発明では、冷凍装置の室外ユニット（10）の４つの熱交換面（30a）を有して側面に開口（3a）が形成された室外熱交換器（30）の下端部に沿うように設けられる矩形枠状のヒータ（75）が、長手方向に折り返すための折返し部（70）を有している。そのため、ヒータ（75）は、折返し部（70）を折り返すことによって長手方向に折り返し可能に構成され、折り返した状態で室外熱交換器（30）の側面に形成された開口（3a）から室熱交換器（30）の内側に挿入されて下端部に沿うように設置される。 In 1st invention, it has four heat exchange surfaces (30a) of the outdoor unit (10) of a freezing apparatus, and it follows the lower end part of the outdoor heat exchanger (30) by which the opening (3a) was formed in the side surface. The heater (75) having a rectangular frame shape provided in the has a folded portion (70) for folding in the longitudinal direction. Therefore, the heater (75) is configured to be folded back in the longitudinal direction by folding the folded portion (70), and in the folded state, the heater (75) is heated from the opening (3a) formed on the side surface of the outdoor heat exchanger (30). It is inserted inside the exchanger (30) and installed along the lower end.
　　第２の発明は、第１の発明において、長手方向に並ぶ第１ヒータ部（76）及び第２ヒータ部（77）を備え、上記折返し部（70）は、上記第１ヒータ部（76）及び第２ヒータ部（77）を接続する配線（78,79）によって構成されている。 According to a second invention, in the first invention, the first heater section (76) and the second heater section (77) arranged in the longitudinal direction are provided, and the turn-up section (70) includes the first heater section (76). And wiring (78, 79) connecting the second heater section (77).
　　第２の発明では、ヒータ（75）が、長手方向に並ぶ第１ヒータ部（76）及び第２ヒータ部（77）を備え、折返し部（70）が、２つのヒータ部（76,77）を接続する配線（78,79）によって構成されている。つまり、配線（78,79）は折り曲げ可能であるため、配線（78,79）を折り曲げることによって、ヒータ（75）が長手方向に折り返される。 In the second invention, the heater (75) includes the first heater portion (76) and the second heater portion (77) arranged in the longitudinal direction, and the folded portion (70) has two heater portions (76, 77). It is comprised by the wiring (78,79) which connects. That is, since the wiring (78, 79) can be bent, the heater (75) is folded back in the longitudinal direction by bending the wiring (78, 79).
　　第３の発明は、第２の発明において、上記各ヒータ部（76,77）は、上記ケーシング（20）の底板（22）に沿うように延びる本体部（76a,77a）と、該本体部（76a,77a）に対して上方に折り曲がるように形成されて上記配線（78,79）が接続される端部（76b,77b）とをそれぞれ有している。 According to a third invention, in the second invention, each of the heater portions (76, 77) includes a main body portion (76a, 77a) extending along the bottom plate (22) of the casing (20), and the main body portion. (76a, 77a) each having an end (76b, 77b) formed so as to be bent upward and connected to the wiring (78, 79).
　　第３の発明では、各ヒータ部（76,77）は、折返し部（70）となる配線（78,79）が接続される端部（76b,77b）が、ケーシング（20）の底板（22）に沿うように延びる本体部（76a,77a）に対して上方に折り曲がるように形成されている。そのため、各ヒータ部（76,77）の本体部（76a,77a）を室外ユニット（10）のケーシング（20）の底板（22）に取り付けると、配線（78,79）が接続される端部（76b,77b）は底板（22）から上方に立ち上がった状態となる。つまり、各ヒータ部（76,77）を接続する配線（78,79）がドレン水を受け止めるケーシング（20）の底板（22）に配置されないため、配線（78,79）にドレン水が付着することがない。 In the third invention, each heater portion (76, 77) has an end portion (76b, 77b) to which the wiring (78, 79) to be the folded portion (70) is connected, and the bottom plate (22) of the casing (20). ) So as to be bent upward with respect to the main body portions (76a, 77a) extending along. Therefore, when the main body (76a, 77a) of each heater (76, 77) is attached to the bottom plate (22) of the casing (20) of the outdoor unit (10), the end to which the wiring (78, 79) is connected (76b, 77b) rises upward from the bottom plate (22). That is, since the wiring (78, 79) connecting the heater parts (76, 77) is not arranged on the bottom plate (22) of the casing (20) that receives the drain water, the drain water adheres to the wiring (78, 79). There is nothing.
　　第４の発明は、第１乃至第３のいずれか１つのヒータ（75）を備えた冷凍装置の室外ユニットである。 The fourth invention is an outdoor unit of a refrigeration apparatus provided with any one of the first to third heaters (75).
　　第４の発明では、ヒータ（75）は、長手方向に折り返した状態で、４つの熱交換面（30a）を有する室外熱交換器（30）の側面に形成された開口（3a）から内側に挿入され、該室外熱交換器（30）の内側において広げられて該室外熱交換器（30）の下端部に沿うように室外ユニット（10）に取り付けられる。 In the fourth invention, the heater (75) is turned inward from the opening (3a) formed on the side surface of the outdoor heat exchanger (30) having four heat exchange surfaces (30a) in a state of being folded back in the longitudinal direction. The outdoor unit (10) is inserted and expanded inside the outdoor heat exchanger (30) and attached to the outdoor unit (10) along the lower end of the outdoor heat exchanger (30).
　　第５の発明は、第４の発明において、上記室外熱交換器（30）の内側に設置された圧縮機（5a,5b）を備えている。 The fifth aspect of the invention includes the compressor (5a, 5b) installed inside the outdoor heat exchanger (30) in the fourth aspect of the invention.
　　第５の発明では、ヒータ（75）は、長手方向に折り返した状態で、４つの熱交換面（30a）を有する室外熱交換器（30）の側面に形成された開口（3a）から圧縮機（5a,5b）との接触を避けながら室外熱交換器（30）の内側に挿入され、圧縮機（5a,5b）が内側に収まるように広げられて該室外熱交換器（30）の下端部に沿うように室外ユニット（10）に取り付けられる。 In 5th invention, a heater (75) is a compressor from the opening (3a) formed in the side surface of the outdoor heat exchanger (30) which has four heat exchange surfaces (30a) in the state folded in the longitudinal direction. (5a, 5b) is inserted into the outside of the outdoor heat exchanger (30) while avoiding contact with it, and the compressor (5a, 5b) is spread out so as to fit inside, and the lower end of the outdoor heat exchanger (30) It is attached to the outdoor unit (10) along the section.
　　第１の発明によれば、矩形枠状のヒータ（75）に折返し部（70）を設けて長手方向に折返し可能に構成したため、ヒータ（75）を冷凍装置の室外ユニット（10）に取り付ける際に、長手方向に折り返した状態で室外熱交換器（30）の側面に形成された開口（3a）から該室外熱交換器（30）の内側に挿入することができる。そのため、室外熱交換器（30）の側面に形成された開口（3a）が狭い場合であっても、室外熱交換器（30）にひっかけることなくヒータ（75）を室外熱交換器（30）の内側に容易に挿入することができる。また、室外熱交換器（30）の内側に挿入した後で、折返したヒータ（75）を広げることで、室外熱交換器（30）にひっかけることなく室外熱交換器（30）の下端部に沿うように容易にヒータ（75）を取り付けることができる。つまり、冷凍装置の室外ユニット用のヒータを取り付け容易な形態に構成することができる。 According to the first invention, the folded portion (70) is provided in the rectangular frame heater (75) so that it can be folded back in the longitudinal direction. Therefore, when the heater (75) is attached to the outdoor unit (10) of the refrigeration apparatus. Furthermore, it can be inserted into the outdoor heat exchanger (30) from the opening (3a) formed on the side surface of the outdoor heat exchanger (30) in a state of being folded back in the longitudinal direction. Therefore, even if the opening (3a) formed on the side surface of the outdoor heat exchanger (30) is narrow, the heater (75) can be connected to the outdoor heat exchanger (30) without being caught on the outdoor heat exchanger (30). Can be easily inserted inside. In addition, by inserting the folded back heater (75) after inserting it inside the outdoor heat exchanger (30), it is attached to the lower end of the outdoor heat exchanger (30) without being caught on the outdoor heat exchanger (30). The heater (75) can be easily attached along the line. That is, the heater for the outdoor unit of the refrigeration apparatus can be configured to be easily attached.
　　また、第２の発明によれば、容易な構成により、長手方向に折返し可能なヒータ（75）を構成することができる。 Further, according to the second invention, the heater (75) that can be folded back in the longitudinal direction can be configured with an easy configuration.
　　また、第３の発明によれば、各ヒータ部（76,77）の折返し部（70）となる配線（78,79）が接続される端部（76b,77b）を、ケーシング（20）の底板（22）に沿うように延びる本体部（76a,77a）に対して上方に折り曲がるように形成したため、ヒータ（75）を室外ユニット（10）の底板（22）に取り付けた際に、各ヒータ部（76,77）を接続する配線（78,79）にドレン水が付着しないようにヒータ（75）を構成することができる。 Further, according to the third invention, the end portions (76b, 77b) to which the wirings (78, 79) to be the folded portions (70) of the heater portions (76, 77) are connected are connected to the casing (20). Since the main body (76a, 77a) extending along the bottom plate (22) is bent upward, each heater (75) is attached to the bottom plate (22) of the outdoor unit (10). The heater (75) can be configured so that drain water does not adhere to the wiring (78, 79) connecting the heater portions (76, 77).
　　また、第４の発明によれば、長手方向に折返し可能に構成されたヒータ（75）を用いることにより、４つの熱交換面（30a）を有する室外熱交換器（30）にひっかけることなく室外熱交換器（30）の内側にヒータ（75）を挿入して室外ユニット（10）に該ヒータ（75）を取り付けることができる。 Further, according to the fourth invention, by using the heater (75) configured to be foldable in the longitudinal direction, the outdoor heat exchanger (30) having four heat exchange surfaces (30a) is not caught on the outdoor side. The heater (75) can be inserted into the heat exchanger (30), and the heater (75) can be attached to the outdoor unit (10).
　　また、第５の発明によれば、室外熱交換器（30）の内側に圧縮機（5a,5b）が設置された室外ユニットに上記ヒータ（75）を設けることとした。このような室外ユニットにヒータ（75）を取り付ける場合、ヒータ（75）が室外熱交換器（30）だけでなくその内側の圧縮機（5a,5b）にもひっかかるおそれがあり、取り付け作業がより煩雑になる。しかしながら、第５の発明では、このような室外ユニットに上述の長手方向に折返し可能なヒータ（75）を設けることとした。そのため、ヒータ（75）を折り返した状態で室外熱交換器（30）の側面に形成された開口（3a）から室外熱交換器（30）の内側に挿入することにより、圧縮機（5a,5b）との接触を容易に避けつつ、容易に室外熱交換器（30）の下端部に沿うようにヒータ（75）を設置することができる。 Further, according to the fifth invention, the heater (75) is provided in the outdoor unit in which the compressor (5a, 5b) is installed inside the outdoor heat exchanger (30). When attaching the heater (75) to such an outdoor unit, the heater (75) may catch not only the outdoor heat exchanger (30) but also the compressor (5a, 5b) inside it. It becomes complicated. However, in the fifth aspect of the invention, such an outdoor unit is provided with the heater (75) that can be folded back in the longitudinal direction. Therefore, the compressor (5a, 5b) is inserted into the outdoor heat exchanger (30) through the opening (3a) formed on the side surface of the outdoor heat exchanger (30) with the heater (75) folded back. The heater (75) can be easily installed along the lower end of the outdoor heat exchanger (30) while easily avoiding contact with the heat exchanger.
図１は、本発明の実施形態１に係る空気調和装置の室外ユニットの外観形状を示す斜視図である。FIG. 1 is a perspective view showing an external shape of an outdoor unit of an air-conditioning apparatus according to Embodiment 1 of the present invention. 図２は、図１の室外ユニットの内部構造を示す第１の斜視図である。FIG. 2 is a first perspective view showing the internal structure of the outdoor unit shown in FIG. 図３は、図１の室外ユニットの内部構造を示す第２の斜視図である。FIG. 3 is a second perspective view showing the internal structure of the outdoor unit shown in FIG. 図４は、図１の室外ユニットの主として底フレームとヒータとを示す斜視図である。FIG. 4 is a perspective view mainly showing a bottom frame and a heater of the outdoor unit of FIG. 図５は、図４のＡ－Ａ断面図である。FIG. 5 is a cross-sectional view taken along the line AA in FIG. 図６は、ヒータの構成を示す斜視図である。FIG. 6 is a perspective view showing the configuration of the heater.
　　以下、本発明の実施形態を図面に基づいて詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
　　〈発明の実施形態１〉
　　図１～図４に示すように、本実施形態１の室外ユニット（10）は、冷凍装置である空気調和装置に用いられるものであって、図示しないが、室内ユニットが接続されて蒸気圧縮式冷凍サイクルを構成している。 <Embodiment 1>
As shown in FIGS. 1 to 4, the outdoor unit (10) of the first embodiment is used for an air conditioner that is a refrigeration apparatus. Although not shown, the indoor unit is connected to a vapor compression type. It constitutes the refrigeration cycle.
　　上記室外ユニット（10）は、例えば、ビルの屋上等に設置され、ケーシング（20）と室外熱交換器（30）と室外ファン（40）と圧縮機構（50）とを備えている。 The outdoor unit (10) is installed, for example, on the roof of a building, and includes a casing (20), an outdoor heat exchanger (30), an outdoor fan (40), and a compression mechanism (50).
　　上記ケーシング（20）は、平面視矩形状に形成され、４本の支柱（21）と、底板を構成する底フレーム（22）と、側面パネル（23）と、平面状の天板（24）とを備えている。つまり、ケーシング（20）には、天板（24）と底フレーム（22）との間に４つの側面（4）が形成されている（図４を参照）。 The casing (20) is formed in a rectangular shape in plan view, and includes four support columns (21), a bottom frame (22) constituting a bottom plate, a side panel (23), and a flat top plate (24). And. That is, the casing (20) has four side surfaces (4) formed between the top plate (24) and the bottom frame (22) (see FIG. 4).
　　上記４つの支柱（21）は、四隅に設けられ、下部に底フレーム（22）が固定されている。また、前側の左右の支柱（21，21）の下端には基礎脚（27）が接続され、後ろ側の左右の支柱（21）の下端にも基礎脚（27）が接続されている。各基礎脚（27）は、底フレーム（22）から下方に延出している。これにより、他のケーシング（20）の平面状の天板（24）の４隅部ないし支柱（21）の上端に、各基礎脚（27）を設置することができ、複数の室外ユニット（10）を上下に重ねて配置できる。この状態では、平面状の天板（24）と底フレーム（22）との間に所定のクリアランスが確保される。 The four struts (21) are provided at the four corners, and the bottom frame (22) is fixed to the lower part. In addition, a foundation leg (27) is connected to the lower ends of the left and right support columns (21, 21) on the front side, and a foundation leg (27) is also connected to the lower ends of the left and right support columns (21) on the rear side. Each foundation leg (27) extends downward from the bottom frame (22). Thereby, each foundation leg (27) can be installed at the four corners of the flat top plate (24) of the other casing (20) or the upper end of the support column (21), and a plurality of outdoor units (10 ) Can be placed one above the other. In this state, a predetermined clearance is secured between the flat top plate (24) and the bottom frame (22).
　　図１に示すように、上記側面パネル（23）は、ケーシング（20）の上半部四面を形成する上側面パネル（23a）と、ケーシング（20）の下半部における前面を形成し且つ左半分を形成する前側面パネル（23b）と、ケーシング（20）の下半部における左側の横側面を形成し且つ前半分を形成する横側面パネル（23c）とを備えている。そして、上記ケーシング（20）の側面には、下半部における前面の右半分と、下半部における右側の横側面と、下半部における背面と、下半部における左側の横側面の後半分に吸込口（25）が形成されている。 As shown in FIG. 1, the side panel (23) forms an upper side panel (23a) that forms four upper half parts of the casing (20) and a front surface in the lower half part of the casing (20). A front side panel (23b) that forms a half, and a lateral side panel (23c) that forms the left side surface in the lower half of the casing (20) and forms the front half. The side surface of the casing (20) includes a right half of the front surface in the lower half, a right lateral surface in the lower half, a back surface in the lower half, and a rear half of the left lateral surface in the lower half. The suction port (25) is formed in.
　　４枚の上側面パネル（23a）は、室外ファン（40）を囲むように各支柱（21）に取り付けられる。上側面パネル（23a）の内部には、２つの室外ファン（40）が収納される上部空間（2b）が形成される（図２，３を参照）。 The four upper side panels (23a) are attached to each support (21) so as to surround the outdoor fan (40). An upper space (2b) in which the two outdoor fans (40) are accommodated is formed inside the upper side panel (23a) (see FIGS. 2 and 3).
　　また、上記天板（24）は、支柱（21）の上端に固定され、２つの吹出口（26）が形成されている。２つの吹出口（26）は、それぞれ２つの室外ファン（40）に対応する位置に形成されている。各吹出口（26）は、平面視において矩形に形成され、矩形に形成された網目状のグリル（24a）によって覆われている。具体的には、天板（24）には、上端面よりも下方に凹ませたグリル（24a）を設置するための設置面が形成されている。そのため、グリル（24a）を天板（24）に取り付けた状態において、グリル（24a）と該グリル（24a）を取り付けるビスとが天板（24）の上端面よりも上方に突出しなくなる。 Also, the top plate (24) is fixed to the upper end of the support post (21), and two air outlets (26) are formed. The two air outlets (26) are formed at positions corresponding to the two outdoor fans (40), respectively. Each air outlet (26) is formed in a rectangular shape in plan view, and is covered with a mesh-shaped grille (24a) formed in a rectangular shape. Specifically, the installation surface for installing the grille (24a) recessed below the upper end surface is formed on the top plate (24). Therefore, in a state where the grill (24a) is attached to the top plate (24), the grill (24a) and the screw to which the grill (24a) is attached do not protrude upward from the upper end surface of the top plate (24).
　　図２～図４に示すように、上記室外熱交換器（30）は、フィンアンドチューブ型熱交換器であって、室外空気と冷媒とを熱交換するように構成されている。つまり、室外熱交換器（30）は、上下に配列される複数の伝熱管が、板状のフィンを貫通して構成される。室外熱交換器（30）は、ケーシング（20）の４つの側面（4）に沿うように伝熱管が３箇所で直角に屈曲している。即ち、上記室外熱交換器（30）は、上下に起立した状態で設けられ、ケーシング（20）の４つの側面（4）にそれぞれ対応する４つの熱交換面（30a）を有する折曲熱交換器（角筒形熱交換器）に構成されている（図４を参照）。 As shown in FIGS. 2 to 4, the outdoor heat exchanger (30) is a fin-and-tube heat exchanger and is configured to exchange heat between outdoor air and the refrigerant. That is, the outdoor heat exchanger (30) is configured by a plurality of heat transfer tubes arranged vertically passing through plate-like fins. In the outdoor heat exchanger (30), the heat transfer tubes are bent at right angles at three locations along the four side surfaces (4) of the casing (20). That is, the outdoor heat exchanger (30) is provided in an upright state and has four heat exchange surfaces (30a) respectively corresponding to the four side surfaces (4) of the casing (20). (Refer to FIG. 4).
　　室外熱交換器（30）の内部には、圧縮機構（50）、油分離器（51）、アキュムレータ（52）等の機器類が設置される機械室（8）が区画される。また、これら圧縮機構（50）と油分離器（51）とアキュムレータ（52）とは、上記底フレーム（22）に取り付けられ、上記圧縮機構（50）は、２台の圧縮機（5a，5b）で構成されている。 In the outdoor heat exchanger (30), a machine room (8) in which devices such as a compression mechanism (50), an oil separator (51), an accumulator (52) are installed is partitioned. The compression mechanism (50), the oil separator (51), and the accumulator (52) are attached to the bottom frame (22), and the compression mechanism (50) includes two compressors (5a, 5b). ).
　　室外熱交換器（30）の４つの熱交換面（30a）のうちの４本の支柱（21）のうちの前側左隅の支柱（21a）を挟む２つの熱交換面（30a）には、それぞれ開口（3a,3a）が形成されている（図２，４を参照）。２つの開口（3a,3a）は、ケーシング（20）内の機器類のメンテナンス開口を構成する。この開口（3a）を形成する室外熱交換器（30）の両端には、室外熱交換器（30）をケーシング（20）に固定するのに用いる管板（31）が設けられている。 Of the four heat exchange surfaces (30a) of the outdoor heat exchanger (30), the two heat exchange surfaces (30a) sandwiching the column (21a) at the front left corner of the four columns (21) are respectively Openings (3a, 3a) are formed (see FIGS. 2 and 4). The two openings (3a, 3a) constitute a maintenance opening for the devices in the casing (20). Tube plates (31) used to fix the outdoor heat exchanger (30) to the casing (20) are provided at both ends of the outdoor heat exchanger (30) forming the opening (3a).
　　図１に示すように、上記ケーシング（20）には、室外熱交換器（30）の各開口（3a）に対応して上記前側面パネル（23b）と横側面パネル（23c）が設けられている。前側面パネル（23b）及び横側面パネル（23c）は、ケーシング（20）の下部に設けられる下側面パネルを構成している。前側面パネル（23b）及び横側面パネル（23c）は、各開口（3a,3a）を開閉自在に支柱（21a）に取り付けられる。 As shown in FIG. 1, the casing (20) is provided with the front side panel (23b) and the lateral side panel (23c) corresponding to each opening (3a) of the outdoor heat exchanger (30). Yes. The front side panel (23b) and the lateral side panel (23c) constitute a lower side panel provided at the lower part of the casing (20). The front side panel (23b) and the lateral side panel (23c) are attached to the column (21a) so that the openings (3a, 3a) can be opened and closed.
　　上記室外熱交換器（30）の開口（3a）が設けられているケーシング（20）の前面側は、サービス面になっており、前側面パネル（23b）を取り外した部分が開放面になる。該前側面パネル（23b）を取り外して開放される開口（3a）は、後述するヒータ（75）を取り付ける際にヒータ（75）を通過させるためのサービス開口となる。 The front side of the casing (20) in which the opening (3a) of the outdoor heat exchanger (30) is provided is a service surface, and the part from which the front side panel (23b) is removed becomes an open surface. The opening (3a) opened by removing the front side panel (23b) serves as a service opening for allowing the heater (75) to pass when the heater (75) described later is attached.
　　また、上記ケーシング（20）は、室外熱交換器（30）が収納される下部空間（2a）と、室外ファン（40）が収納される上部空間（2b）との間に位置して、水平方向に延びるステー（20a，20b，20c，20d）が４面に取り付けられている。 The casing (20) is positioned between the lower space (2a) in which the outdoor heat exchanger (30) is accommodated and the upper space (2b) in which the outdoor fan (40) is accommodated. Stays (20a, 20b, 20c, 20d) extending in the direction are attached to the four surfaces.
　　上記室外ファン（40）は、２台設けられ、ファン本体（41）とファンモータ（図示せず）とベルマウス（43）とを備え、上記ステー（20a，20c）に取り付けられている。 Two outdoor fans (40) are provided, which include a fan body (41), a fan motor (not shown), and a bell mouth (43), and are attached to the stays (20a, 20c).
　　さらに、上記ケーシング（20）には、圧縮機構（50）等を制御するための電装品が収納される電装品ユニット（60）が取り付けられている。該電装品ユニット（60）は、室外熱交換器（30）の前面上方において、室外熱交換器（30）の上端の直近に配置され、上側面パネル（23a）と室外ファン（40）のベルマウス（43）との間に設けられている。 Furthermore, an electrical component unit (60) that houses electrical components for controlling the compression mechanism (50) and the like is attached to the casing (20). The electrical component unit (60) is disposed above the front surface of the outdoor heat exchanger (30) and in the vicinity of the upper end of the outdoor heat exchanger (30), and the bell of the upper side panel (23a) and the outdoor fan (40). It is provided between the mouse (43).
　　上記底フレーム（22）には、上記圧縮機構（50）を覆う圧縮機カバーが取り付けられている。この圧縮機カバーは、圧縮機構（50）の振動による騒音を低減するための防音箱として設けられている。 A compressor cover that covers the compression mechanism (50) is attached to the bottom frame (22). The compressor cover is provided as a soundproof box for reducing noise caused by vibration of the compression mechanism (50).
　　また、底フレーム（22）には、室外熱交換器（30）のドレン水を排水するための排水通路（71）が形成されている（図４参照）。排水通路（71）は、底フレーム（22）の室外熱交換器（30）の下方に複数（本実施形態では５つ）形成されている。 Also, a drainage passage (71) for draining the drain water of the outdoor heat exchanger (30) is formed in the bottom frame (22) (see FIG. 4). A plurality (five in this embodiment) of drainage passages (71) are formed below the outdoor heat exchanger (30) of the bottom frame (22).
　　図５に示すように、各排水通路（71）は、底フレーム（22）に凹溝を形成することによって形成されている。凹溝は、室外熱交換器（30）に沿って延びる底部（71a）と、該底部（71a）の両側において底部（71a）に沿って延びる傾斜部（71b）とを有している。各排水通路（71）の底部（71a）には、複数の排水穴（72）が形成されている。また、各排水通路（71）には、室外熱交換器（30）を設置するための設置台（73）が複数形成されている。 As shown in FIG. 5, each drainage passage (71) is formed by forming a concave groove in the bottom frame (22). The concave groove has a bottom portion (71a) extending along the outdoor heat exchanger (30) and inclined portions (71b) extending along the bottom portion (71a) on both sides of the bottom portion (71a). A plurality of drain holes (72) are formed in the bottom (71a) of each drain passage (71). Each drainage passage (71) has a plurality of installation bases (73) for installing the outdoor heat exchanger (30).
　　各設置台（73）は、排水通路（71）上に凸部を形成することによって形成されている。凸部は、平坦に形成されて室外熱交換器（30）が設置される台部（73a）と、該台部（73a）から排水通路（71）に向かってテーパ状に形成された側部（73b）とを有している。各設置台（73）の台部（73a）には、複数の排水穴（74）が形成されている。 Each installation base (73) is formed by forming a convex part on the drainage passage (71). The convex part is flat and has a base part (73a) on which the outdoor heat exchanger (30) is installed, and a side part formed in a tapered shape from the base part (73a) toward the drainage passageway (71). (73b). A plurality of drain holes (74) are formed in the base portion (73a) of each installation base (73).
　　上記室外熱交換器（30）は、上記各設置台（73）の台部（73a）上に載置された状態で、両端に設けられた管板（31）を底フレーム（22）を含むケーシング（20）にネジ等によって締結することによってケーシング（20）に固定されている。 The outdoor heat exchanger (30) includes tube frames (31) provided at both ends in a state where the outdoor heat exchanger (30) is placed on the base part (73a) of each installation base (73), and a bottom frame (22). The casing (20) is fixed to the casing (20) by fastening with screws or the like.
　　また、図４，５に示すように、本室外ユニット（10）には、上記排水通路（71）に受け止められたドレン水が凍結しないように加熱するヒータ（75）が設けられている。ヒータ（75）は、室外熱交換器（30）の４つの熱交換面（30a）の下端部に沿うように矩形の枠状に形成されている。 4 and 5, the outdoor unit (10) is provided with a heater (75) for heating the drain water received in the drainage passage (71) so as not to freeze. The heater (75) is formed in a rectangular frame shape along the lower ends of the four heat exchange surfaces (30a) of the outdoor heat exchanger (30).
　　具体的には、図５に示すように、ヒータ（75）は、排水通路（71）の内側の傾斜部（71b）と設置台（73）のテーパ形状の側部（73b）の内側部分とによって挟まれる位置に設けられている。また、図６に示すように、ヒータ（75）は、第１ヒータ部（76）と第２ヒータ部（77）の２つのヒータ部を有している。つまり、ヒータ（75）は、２つのヒータ部に分割された分割構造に構成されている。 Specifically, as shown in FIG. 5, the heater (75) includes an inclined portion (71b) inside the drainage passage (71) and an inner portion of the tapered side portion (73b) of the installation base (73). It is provided in the position pinched | interposed by. Moreover, as shown in FIG. 6, the heater (75) has two heater parts, a first heater part (76) and a second heater part (77). That is, the heater (75) has a divided structure divided into two heater portions.
　　第１ヒータ部（76）は、室外熱交換器（30）の４つの熱交換面（30a）のうちの左側面と背面とを構成する熱交換面（30a）に沿うようにＬ字形状に形成されている。一方、第２ヒータ部（77）は、室外熱交換器（30）の４つの熱交換面（30a）のうちの背面と右側面と前面とを構成する熱交換面（30a）に沿うようにＵ字形状に形成されている。 A 1st heater part (76) is L-shaped so that the heat exchange surface (30a) which comprises the left side surface and back surface of the four heat exchange surfaces (30a) of an outdoor heat exchanger (30) may be met. Is formed. On the other hand, the second heater part (77) is along the heat exchange surface (30a) that constitutes the back surface, the right side surface, and the front surface of the four heat exchange surfaces (30a) of the outdoor heat exchanger (30). It is formed in a U shape.
　　第１ヒータ部（76）は、Ｌ字形状の本体部（76a）と該本体部（76a）に連続して該本体部（76a）が延びる平面から上方に向かって折り曲げられた端部（76b）とを有している。一方、第２ヒータ部（77）は、Ｕ字形状の本体部（77a）と該本体部（77a）に連続して該本体部（77a）が延びる平面から上方に向かって折り曲げられた端部（77b）とを有している。そして、第１ヒータ部（76）及び第２ヒータ部（77）は、一方側の端部（76b,77b）どうしが渡り配線（78）によって接続され、他方側の端部（76b,77b）にそれぞれ電源コネクタ（80）と接続するリード線（79）が接続されている。 The first heater portion (76) has an L-shaped main body portion (76a) and an end portion (76b) bent upward from a plane extending from the main body portion (76a) continuously to the main body portion (76a). ). On the other hand, the second heater part (77) has a U-shaped main body part (77a) and an end part bent upward from a plane extending from the main body part (77a) to the main body part (77a). (77b). The first heater portion (76) and the second heater portion (77) are connected to each other at the one end portions (76b, 77b) by the crossover wiring (78), and the other end portion (76b, 77b). A lead wire (79) connected to the power connector (80) is connected to each.
　　上述のように第１ヒータ部（76）と第２ヒータ部（77）とが各配線（78,79）によって接続されることにより、ヒータ（75）は矩形の枠状に形成されている。また、ヒータ（75）は、第１ヒータ部（76）と第２ヒータ部（77）とが長手方向に並ぶように各配線（78,79）によって接続されることにより、長手方向に折返し可能に構成される。つまり、各配線（78,79）は折り曲げ可能であるため、各配線（78,79）が折返し部（70）を構成し、該折返し部（70）を折り曲げることにより、ヒータ（75）自体が長手方向に２つに折り返される。 As described above, the heater (75) is formed in a rectangular frame shape by connecting the first heater portion (76) and the second heater portion (77) by the respective wires (78, 79). In addition, the heater (75) can be folded back in the longitudinal direction by connecting the first heater portion (76) and the second heater portion (77) with each wiring (78, 79) so that they are aligned in the longitudinal direction. Configured. That is, since each wiring (78,79) can be bent, each wiring (78,79) constitutes a folded portion (70), and the folded portion (70) is folded, so that the heater (75) itself is It is folded back into two in the longitudinal direction.
　　　－運転動作－
　　この空気調和装置の室外ユニット（10）の運転時は、圧縮機構（50）が動作して、この室外ユニット（10）と図示していない室内ユニットとの間に形成されている冷媒回路内を冷媒が循環して冷凍サイクルが行われる。また、室外ユニット（10）のケーシング（20）内では室外ファン（40）が回転し、ケーシング（20）の下半部に形成されている吸込口（25）により四方からケーシング（20）内に吸い込まれた室外空気が室外熱交換器（30）を通過する。室外熱交換器（30）を通過する室外空気は、室外熱交換器（30）の中を流れる冷媒と熱交換して、暖房運転時には蒸発器になっている室外熱交換器（30）で冷媒に熱を奪われて冷却され、冷房運転時には凝縮器になっている室外熱交換器（30）で冷媒から熱を奪って加熱される。そして、室外空気はさらに室外ファン（40）を通過して上方へ向きを変え、吹出口（26）から室外へ吹き出される。 -Driving operation-
When the outdoor unit (10) of the air conditioner is in operation, the compression mechanism (50) is operated, and the inside of the refrigerant circuit formed between the outdoor unit (10) and the indoor unit (not shown) A refrigerant circulates and a refrigeration cycle is performed. In addition, the outdoor fan (40) rotates in the casing (20) of the outdoor unit (10), and the suction port (25) formed in the lower half of the casing (20) allows the fan to enter the casing (20) from four directions. The sucked outdoor air passes through the outdoor heat exchanger (30). The outdoor air passing through the outdoor heat exchanger (30) exchanges heat with the refrigerant flowing in the outdoor heat exchanger (30), and the refrigerant is generated in the outdoor heat exchanger (30) that serves as an evaporator during heating operation. Heat is taken from the refrigerant and cooled, and during the cooling operation, heat is taken from the refrigerant by the outdoor heat exchanger (30) which is a condenser. The outdoor air further passes through the outdoor fan (40) and turns upward, and is blown out from the outlet (26).
　　　－ドレン水の排出動作－
　　また、上記空気調和装置が暖房運転を行う際に、室外ユニット（10）では、室外熱交換器（30）のドレン水が凍結しないようにヒータ（75）が通電される。室外熱交換器（30）のドレン水は、下方に落下して底フレーム（22）に形成された排水通路（71）に受け止められる。また、ドレン水の一部は、室外熱交換器（30）が設置された設置台（73）の排水穴（74）を介して排水通路（71）に流れ込む。このとき、ヒータ（75）が通電されているため、排水通路（71）内のドレン水が加熱され、凍結が防止される。そして、排水通路（71）内のドレン水は、排水通路（71）に形成された排水穴（72）を介してケーシング（20）の外部へ排出される。 -Drain water discharge operation-
Further, when the air conditioner performs the heating operation, in the outdoor unit (10), the heater (75) is energized so that the drain water of the outdoor heat exchanger (30) does not freeze. The drain water of the outdoor heat exchanger (30) falls downward and is received by the drainage passage (71) formed in the bottom frame (22). A part of the drain water flows into the drainage passageway (71) through the drainage hole (74) of the installation base (73) where the outdoor heat exchanger (30) is installed. At this time, since the heater (75) is energized, the drain water in the drainage passage (71) is heated to prevent freezing. And the drain water in a drainage channel (71) is discharged | emitted outside the casing (20) through the drainage hole (72) formed in the drainage channel (71).
　　なお、本実施形態では、暖房運転を行う際にヒータ（75）に通電することとしたが、他の運転モードにおいて外気温度が所定温度以下の場合に通電することとしてもよく、いずれの運転の際にも通電されることとしてもよい。 In the present embodiment, the heater (75) is energized when performing the heating operation. However, in other operation modes, the heater (75) may be energized when the outside air temperature is equal to or lower than the predetermined temperature. It is also possible to energize it.
　　　－ヒータの取り付け動作－
　　以下では、ヒータ（75）を後付けする又はヒータ（75）のメンテナンスを行う際に、各種構成機器を取り外すことなくヒータ（75）をケーシング（20）内に取り付ける動作について説明する。 -Heater installation operation-
Hereinafter, an operation of attaching the heater (75) in the casing (20) without removing various components when the heater (75) is retrofitted or the heater (75) is maintained will be described.
　　まず、ケーシング（20）の開口（3a）を閉塞する前側面パネル（23b）を取り外す。次に、ヒータ（75）を配線（78,79）を折り曲げることによって長手方向に２つに折返し、ケーシング（20）の開口（3a）を通過させて室外熱交換器（30）の内側に挿入する。その後、２つ折り状態のヒータ（75）を室外熱交換器（30）の内側において広げ、該室外熱交換器（30）の下端部に沿うように配置する。そして、図示しない取付板によってヒータ（75）を取り付ける。 First, remove the front side panel (23b) that closes the opening (3a) of the casing (20). Next, the heater (75) is folded back into two in the longitudinal direction by bending the wires (78, 79), passed through the opening (3a) of the casing (20), and inserted inside the outdoor heat exchanger (30). To do. Thereafter, the two-folded heater (75) is spread inside the outdoor heat exchanger (30), and is arranged along the lower end of the outdoor heat exchanger (30). Then, the heater (75) is attached by an attachment plate (not shown).
　　　－実施形態１の効果－
　　上記実施形態によれば、矩形枠状のヒータ（75）に折返し部（70）を設けて長手方向に折返し可能に構成したため、ヒータ（75）を冷凍装置の室外ユニット（10）に取り付ける際に、長手方向に折り返した状態で室外熱交換器（30）の側面に形成された開口（3a）から該室外熱交換器（30）の内側に挿入することができる。そのため、室外熱交換器（30）の側面に形成された開口（3a）が狭い場合であっても、室外熱交換器（30）にひっかけることなくヒータ（75）を室外熱交換器（30）の内側に容易に挿入することができる。また、室外熱交換器（30）の内側に挿入した後で、折返したヒータ（75）を広げることで、室外熱交換器（30）にひっかけることなく室外熱交換器（30）の下端部に沿うように容易にヒータ（75）を取り付けることができる。つまり、冷凍装置の室外ユニット用のヒータを取り付け容易な形態に構成することができる。 -Effect of Embodiment 1-
According to the above embodiment, since the folded portion (70) is provided in the rectangular frame heater (75) so that the heater can be folded back in the longitudinal direction, the heater (75) is attached to the outdoor unit (10) of the refrigeration apparatus. It can be inserted into the outdoor heat exchanger (30) from the opening (3a) formed in the side surface of the outdoor heat exchanger (30) in a folded state in the longitudinal direction. Therefore, even if the opening (3a) formed on the side surface of the outdoor heat exchanger (30) is narrow, the heater (75) can be connected to the outdoor heat exchanger (30) without being caught on the outdoor heat exchanger (30). Can be easily inserted inside. In addition, by inserting the folded back heater (75) after inserting it inside the outdoor heat exchanger (30), it is attached to the lower end of the outdoor heat exchanger (30) without being caught on the outdoor heat exchanger (30). The heater (75) can be easily attached along the line. That is, the heater for the outdoor unit of the refrigeration apparatus can be configured to be easily attached.
　　また、上記実施形態によれば、ヒータ（75）を、長手方向に並ぶ第１ヒータ部（76）及び第２ヒータ部（77）を備えて、該第１ヒータ部（76）及び第２ヒータ部（77）を接続する配線（78,79）が折返し部（70）となるように構成した。よって、容易な構成により、長手方向に折返し可能なヒータ（75）を構成することができる。 According to the above embodiment, the heater (75) includes the first heater part (76) and the second heater part (77) arranged in the longitudinal direction, and the first heater part (76) and the second heater are provided. The wiring (78, 79) connecting the part (77) is configured to be the folded part (70). Therefore, the heater (75) that can be folded back in the longitudinal direction can be configured with an easy configuration.
　　また、上記実施形態によれば、各ヒータ部（76,77）において折返し部（70）となる配線（78,79）が接続される端部（76b,77b）を、ケーシング（20）の底フレーム（22）に沿うように設けられる本体部（76a,77a）に対して上方に折り曲がるように形成した。そのため、ヒータ（75）を室外ユニット（10）の底フレーム（22）に取り付けた際に、各ヒータ部（76,77）を接続する配線（78,79）にドレン水が付着しないようにヒータ（75）を構成することができる。 Further, according to the above embodiment, the end portions (76b, 77b) to which the wirings (78, 79) to be the folded portions (70) are connected in the heater portions (76, 77) are connected to the bottom of the casing (20). The main body (76a, 77a) provided along the frame (22) was bent upward. Therefore, when the heater (75) is attached to the bottom frame (22) of the outdoor unit (10), the heater prevents the drain water from adhering to the wiring (78,79) connecting each heater section (76,77). (75) can be configured.
　　また、上記実施形態によれば、長手方向に折返し可能に構成されたヒータ（75）を用いることにより、４つの熱交換面（30a）を有する室外熱交換器（30）にひっかけることなく室外熱交換器（30）の内側にヒータ（75）を挿入して室外ユニット（10）に該ヒータ（75）を取り付けることができる。 Moreover, according to the said embodiment, by using the heater (75) comprised so that folding in the longitudinal direction was possible, outdoor heat was not caught on the outdoor heat exchanger (30) which has four heat exchange surfaces (30a). The heater (75) can be inserted into the exchanger (30) and the heater (75) can be attached to the outdoor unit (10).
　　ところで、上記実施形態の室外ユニット（10）では、室外熱交換器（30）の内側に圧縮機（5a,5b）が設置されている。このような室外ユニット（10）にヒータ（75）を取り付ける場合、ヒータ（75）が室外熱交換器（30）だけでなくその内側の圧縮機（5a,5b）にもひっかかるおそれがあり、取り付け作業がより煩雑になる。しかしながら、上記実施形態では、このような室外ユニット（10）に上述のような長手方向に折返し可能なヒータ（75）を設けることとした。そのため、ヒータ（75）を折り返した状態で室外熱交換器（30）の側面に形成された開口（3a）から室外熱交換器（30）の内側に挿入することにより、圧縮機（5a,5b）との接触を容易に避けつつ、容易に室外熱交換器（30）の下端部に沿うようにヒータ（75）を設置することができる。 Incidentally, in the outdoor unit (10) of the above embodiment, the compressors (5a, 5b) are installed inside the outdoor heat exchanger (30). When attaching the heater (75) to such an outdoor unit (10), the heater (75) may catch not only the outdoor heat exchanger (30) but also the compressor (5a, 5b) inside it. Work becomes more complicated. However, in the above embodiment, such an outdoor unit (10) is provided with the heater (75) that can be folded back in the longitudinal direction as described above. Therefore, the compressor (5a, 5b) is inserted into the outdoor heat exchanger (30) through the opening (3a) formed on the side surface of the outdoor heat exchanger (30) with the heater (75) folded back. The heater (75) can be easily installed along the lower end of the outdoor heat exchanger (30) while easily avoiding contact with the heat exchanger.
　　《その他の実施形態》
　　上記実施形態については、以下のような構成としてもよい。 << Other Embodiments >>
About the said embodiment, it is good also as the following structures.
　　上記実施形態では、ヒータ（75）は、配線（78,79）によって接続された２つのヒータ部（76,77）を有して長手方向に２つ折り可能に構成されていたが、３つ折り又は４つ折り可能に構成することとしてもよい。 In the above embodiment, the heater (75) has the two heater portions (76, 77) connected by the wiring (78, 79) and is configured to be foldable in the longitudinal direction. It is good also as comprising so that it can fold in four.
　　また、上記実施形態における冷媒回路機器の配置などは一例に過ぎず、適宜変更することが可能である。例えば、室外熱交換器（30）の内側に圧縮機（5a,5b）等が配置されていないものであってもよい。 In addition, the arrangement of the refrigerant circuit device in the above embodiment is merely an example, and can be changed as appropriate. For example, the compressor (5a, 5b) or the like may not be disposed inside the outdoor heat exchanger (30).
　　なお、以上の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。 It should be noted that the above embodiment is essentially a preferable example, and is not intended to limit the scope of the present invention, its application, or its use.
　　以上説明したように、本発明は、ドレン水の凍結を防止するヒータ及びそれを備えた冷凍装置の室外ユニットについて有用である。 As described above, the present invention is useful for a heater that prevents freezing of drain water and an outdoor unit of a refrigeration apparatus including the heater.
　　　　　４　　　　　側面
　　　　　５ａ、５ｂ　圧縮機
　　　　　１０　　　　室外ユニット
　　　　　２０　　　　ケーシング
　　　　　２２　　　　底フレーム（底板）
　　　　　３０　　　　室外熱交換器
　　　　　３０ａ　　　熱交換面
　　　　　７０　　　　折返し部
　　　　　７５　　　　ヒータ
　　　　　７６　　　　第１ヒータ部
　　　　　７６ａ　　　本体部
　　　　　７６ｂ　　　端部
　　　　　７７　　　　第２ヒータ部
　　　　　７７ａ　　　本体部
　　　　　７７ｂ　　　端部
　　　　　７８　　　　渡り配線（配線）
　　　　　７９　　　　リード線（配線） 4 Side surface 5a, 5b Compressor 10 Outdoor unit 20 Casing 22 Bottom frame (bottom plate)
30 Outdoor Heat Exchanger 30a Heat Exchange Surface 70 Folding Part 75 Heater 76 First Heater Part 76a Main Body Part 76b End 77 Second Heater Part 77a Main Body Part 77b End Part 78 Crossover Wiring (Wiring)
79 Lead wire (wiring)

Claims (5)

  1. 　　４つの側面（4）を有するケーシング（20）と、該ケーシング（20）内に設けられて該ケーシング（20）の各側面（4）に対応する４つの熱交換面（30a）を有して側面に開口（3a）が形成された室外熱交換器（30）とを備えた冷凍装置の室外ユニット（10）の上記室外熱交換器（30）の下端部に沿う矩形の枠状に形成されて上記室外熱交換器（30）のドレン水の凍結を防止するためのヒータであって、
    　　長手方向に折り返すための折返し部（70）を有している
    ことを特徴とするヒータ。     A casing (20) having four side surfaces (4), and four heat exchange surfaces (30a) provided in the casing (20) and corresponding to the side surfaces (4) of the casing (20). The outdoor unit (10) of the refrigeration apparatus having an outdoor heat exchanger (30) with an opening (3a) formed on the side surface is formed in a rectangular frame shape along the lower end of the outdoor heat exchanger (30). A heater for preventing the drain water of the outdoor heat exchanger (30) from freezing,
    A heater having a folded portion (70) for folding in the longitudinal direction.
  2. 　　請求項１において、
    　　長手方向に並ぶ第１ヒータ部（76）及び第２ヒータ部（77）を備え、
    　　上記折返し部（70）は、上記第１ヒータ部（76）及び第２ヒータ部（77）を接続する配線（78,79）によって構成されている
    ことを特徴とするヒータ。     In claim 1,
    A first heater section (76) and a second heater section (77) arranged in the longitudinal direction;
    The said folding | returning part (70) is comprised by the wiring (78,79) which connects the said 1st heater part (76) and 2nd heater part (77), The heater characterized by the above-mentioned.
  3. 　　請求項２において、
    　　上記各ヒータ部（76,77）は、上記ケーシング（20）の底板（22）に沿うように延びる本体部（76a,77a）と、該本体部（76a,77a）に対して上方に折り曲がるように形成されて上記配線（78,79）が接続される端部（76b,77b）とをそれぞれ有している
    ことを特徴とするヒータ。     In claim 2,
    Each said heater part (76,77) bends upward with respect to the main-body part (76a, 77a) extended along the bottom plate (22) of the said casing (20), and this main-body part (76a, 77a). The heater is characterized by having an end portion (76b, 77b) to which the wiring (78, 79) is connected.
  4. 　　請求項１乃至３のいずれか１つのヒータ（75）を備えた冷凍装置の室外ユニット。 An outdoor unit of a refrigeration apparatus comprising the heater (75) according to any one of claims 1 to 3.
  5. 　　請求項４において、
    　　上記室外熱交換器（30）の内側に設置された圧縮機（5a,5b）を備えている
    ことを特徴とする冷凍装置の室外ユニット。     In claim 4,
    An outdoor unit of a refrigeration apparatus comprising a compressor (5a, 5b) installed inside the outdoor heat exchanger (30).
PCT/JP2012/007949 2011-12-12 2012-12-12 Heater and outdoor unit for refrigeration unit provided with heater WO2013088713A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201280058436.5A CN103988026B (en) 2011-12-12 2012-12-12 Heater and possess the outdoor unit of refrigerating plant of this heater
KR1020147018993A KR101428444B1 (en) 2011-12-12 2012-12-12 Heater and outdoor unit for refrigeration unit provided with heater
EP12857382.1A EP2792955B1 (en) 2011-12-12 2012-12-12 Heater and outdoor unit for refrigeration unit provided with heater
US14/364,617 US20140298844A1 (en) 2011-12-12 2012-12-12 Heater and an outdoor unit including the same for a refrigerator
AU2012353915A AU2012353915B2 (en) 2011-12-12 2012-12-12 A heater and an outdoor unit including the same for a refrigerator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-271295 2011-12-12
JP2011271295A JP5218629B2 (en) 2011-12-12 2011-12-12 Heater and outdoor unit of refrigeration apparatus provided with the same

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WO2013088713A1 true WO2013088713A1 (en) 2013-06-20

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US (1) US20140298844A1 (en)
EP (1) EP2792955B1 (en)
JP (1) JP5218629B2 (en)
KR (1) KR101428444B1 (en)
CN (1) CN103988026B (en)
AU (1) AU2012353915B2 (en)
WO (1) WO2013088713A1 (en)

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JP5218629B2 (en) 2013-06-26
KR101428444B1 (en) 2014-08-07
JP2013122351A (en) 2013-06-20
EP2792955A1 (en) 2014-10-22
KR20140093755A (en) 2014-07-28
EP2792955A4 (en) 2015-12-02
AU2012353915A1 (en) 2014-07-17
CN103988026B (en) 2015-09-02
US20140298844A1 (en) 2014-10-09
EP2792955B1 (en) 2016-11-30
AU2012353915B2 (en) 2014-09-25
CN103988026A (en) 2014-08-13

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