EP2113729B1 - Engine-driven heat pump - Google Patents

Engine-driven heat pump Download PDF

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Publication number
EP2113729B1
EP2113729B1 EP08711642.2A EP08711642A EP2113729B1 EP 2113729 B1 EP2113729 B1 EP 2113729B1 EP 08711642 A EP08711642 A EP 08711642A EP 2113729 B1 EP2113729 B1 EP 2113729B1
Authority
EP
European Patent Office
Prior art keywords
engine
floorboard
heat pump
driven heat
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08711642.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2113729A1 (en
EP2113729A4 (en
Inventor
Hideyuki Kanai
Susumu Murai
Eiji Ota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yanmar Co Ltd filed Critical Yanmar Co Ltd
Publication of EP2113729A1 publication Critical patent/EP2113729A1/en
Publication of EP2113729A4 publication Critical patent/EP2113729A4/en
Application granted granted Critical
Publication of EP2113729B1 publication Critical patent/EP2113729B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • 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
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/12—Vibration or noise prevention 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
    • F24F1/36—Drip trays for outdoor units

Definitions

  • the present invention relates to a construction of a floorboard of an engine-driven heat pump having an engine driving a compressor and a receiver accommodating a refrigerant liquid.
  • JP 2003-279077 discloses an engine-driven heat pump including a bottom panel having an oil storage chamber formed by press working. If perchance the engine oil is leaked, the engine oil is accommodated in the oil storage chamber.
  • JP 2006071199 A discloses an outdoor unit having a reduced noise level by applying a novel construction of an oil tank. Between a device installation plate as an installation surface for an engine and a bed, the oil tank for engine oil is provided for lubricating the engine. The oil tank consumes vibration energy generated from the engine and a compressor as vibration sources (converts the vibration energy into the kinetic energy of the engine oil). Thus, the vibration energy to be transmitted from the bed to supporting columns is reduced and the vibration of a top plate is reduced, thereby reducing the noise level.
  • US patent application 2 984 993 A discloses a mechanism for controlling cooling and condensing equipment powered by an internal combustion engine.
  • the cooling system include an evaporative condenser, a cooling or evaporator coil equipment, and a compressor operable by an internal combustion engine for receiving expanded refrigerant from the coil equipment through an intake pipe and de livering compressed refrigerant through a discharge pipe to a hot refrigerant gas header and hence to condenser or heat exchanger coils forming part of the condenser equipment.
  • Refrigerant condensed in the coils is delivered to a liquid cooler bottom header and hence to a liquid refrigerant receiver from which the condensed refrigerant is delivered through a pipe, controlled by a solenoid valve, to an expansion valve of conventional construction controlling the passage of refrigerant to and expansion of the refrigerant in the evaporator coil 2.
  • the bottom panel of the engine-driven heat pump described in JP 2003-279077 are formed at four corners thereof with creasing chambers which drain away rainwater falling along brace members, and is the portion other than four corners is formed as the oil storage chamber.
  • the oil storage chamber and the creasing chambers are separated due to an oil weir. Therefore, there is a possibility that dropwise condensation generated on a surface of a refrigerating machine disposed at the equipment compartment becomes condensate water so as to be accommodated in the oil storage chamber.
  • the receiver generates the dropwise condensation on the surface thereof, because the refrigerant liquid accommodated inside of it during operation becomes low temperature.
  • the dropwise condensation collected so as to be the condensate water threatens to accumulate on the bottom face of the equipment compartment.
  • problems to be solved by the present invention are to provide a construction of a floor board in an engine-driven heat pump capable of preventing the leaking of the engine oil, of draining away the condensate water due to the dropwise condensation in the refrigeration machine and of reducing the noise due to the engine vibration as a vibratory source, using a simple construction.
  • an engine-driven heat pump of the present invention comprising of an engine for driving a compressor and a receiver for accommodating a refrigerant liquid, a floorboard for a refrigerating machine on which the receiver is provided and an engine mounting floorboard on which the engine is provided are comprised as different members.
  • the floorboard for the refrigerating machine and the engine mounting floorboard are comprised as different members, the collection of the condensate water due to the dropwise condensation and that of the engine oil when it is leaked can be separately performed,
  • the floorboard for the refrigerating machine is formed so that a drain outlet is provided thereon and a sidewall is provided on the peripheral border thereof, and the engine mounting floorboard is formed so that a sidewall is provided on the peripheral border thereof.
  • the condensate water generated in the equipment compartment can be assuredly drained away to the outside of the engine-driven heat pump, while as the engine mounting floorboard is interrupted from the outside thereof without an opening portion, when the engine oil is leaked, the leaked engine oil can be prevented from escaping to the outside of the engine-driven heat pump.
  • a plate-like member for introducing the engine oil flied in all directions from the engine on the engine mounting floorboard is provided, adjacent to a power transmitting portion from the engine to the compressor.
  • the engine oil can be fallen down to the engine mounting floorboard. Therefore, the engine oil flied in all directions can be prevented from escaping to the outside of the engine-driven heat pump.
  • the engine-driven heat pump 1 comprises two equipment chambers 10, 20 vertically separated.
  • the upper equipment chamber is a heat exchanging chamber 10, and the lower equipment chamber is an equipment compartment 20.
  • the heat exchanging chamber 10 is constructed so as to ventilate an ambient air for the heat exchange in an outdoor heat exchanger 11.
  • the heat exchanging chamber 10 includes outdoor heat exchangers 11, a radiator (not shown), outdoor fans 12 and motors 13 for outdoor fans 12 or the like.
  • the outdoor heat exchanger 11 is disposed on the front and the back sides of the heat exchanging chamber 10.
  • the outdoor fan 12 is constructed so as to inhale the ambient air from the front or the back side thereof, to exchange the heat of it by the outdoor heat exchanger 11 and to ventilate it out of the upper surface thereof. Due to the ventilating construction, the heat of the radiator is also exchanged.
  • this ventilating construction is a construction of the form referred to as top-blown type commonly used for a large-size engine-driven heat pump.
  • the equipment compartment 20 is a substantially hermetic type equipment compartment communicating with the exterior portion thereof only through a ventilating hole (not shown), an engine intake pipe (not shown) and an exhaust pipe (not shown).
  • Main equipments in the engine-driven heat pump 1, such as an engine system equipment, a refrigerating machine and an electric machinery box (not shown), are disposed in the equipment compartment 20.
  • An engine 22, peripheral equipments or the like are disposed therein, as the engine system equipment.
  • a compressor 23, an oil separator 25, a receiver 24 or the like are disposed therein, as the refrigerating machine.
  • the equipment compartment 20 is covered around the sides thereof with outer plates 21. Incidentally, a swash plate 50 will be described in greater detail later.
  • a floorboard 40 for the refrigerating machine A construction of a floorboard 40 for the refrigerating machine will be described in detail, with reference to Fig. 2 .
  • Fig. 2 illustrates only an engine 22, the receiver 24 and the oil separator 25 in the equipment compartment 20, and the outer plates 21 and the swash plates 50 are omitted, so as to explain it simply.
  • the floorboard 40 for the refrigerating machine is formed so as to be a dish-shaped or a box-shaped configuration, having a sidewall 43 on the periphery thereof.
  • the height of the sidewall 43 which is not especially limited in the present embodiment, is enough at the level of 50 mm to 100 mm.
  • the floorboard 40 for the refrigerating machine is provided on the bottom face thereof with a drain outlet 42.
  • the floorboard 40 for the refrigerating machine is communicated with the outside of the engine-driven heat pump 1 via the drain outlet 42.
  • the floorboard 40 for the refrigerating machine is disposed on the output side of the engine 22 (i.e., on the side of the compressor 23) in the width direction of the engine-driven heat pump 1, and approximately at the middle in the depth direction thereof.
  • the receiver 24 and the oil separator 25 attached to a mounting stage 45 are installed on the floorboard 40 for the refrigerating machine.
  • the receiver 24 causes the dropwise condensation on the surface thereof due to moisture in the air, because the refrigerant liquid accommodated therein during operation becomes low-temperature. Therefore, the dropwise condensation is dropped down and collected, so that it is accumulated as the condensate water on the bottom face of the equipment compartment 20.
  • the same type of phenomenon occurs at liquid pipes on the periphery of the receiver 24.
  • the floorboard 40 for the refrigerating machine is constructed so that it can collects these condensate water and assuredly drain away them from the drain outlet 42 to the outside of the engine-driven heat pump 1.
  • the engine mounting floorboard 30 is formed so as to be a dish-shaped or a box-shaped configuration, having a sidewall 33 on the periphery thereof.
  • the height of the sidewall 33 which is not especially limited in the present embodiment, is substantially the same height as the floorboard 40 for the refrigerating machine.
  • a bottom face 31 of the engine mounting floorboard do not have an opening portion, an aperture or the like, so that the engine mounting floorboard 30 is interrupted from the floorboard 40 for the refrigerating machine and the floorboards of the other portions of the equipment compartment 20.
  • the engine mounting floorboard 30 is disposed on the right side from an anterior view in the width direction of the engine-driven heat pump 1 and at the substantially middle portion in the depth direction thereof.
  • the engine 22 attached to an engine mount 51 (see Fig. 3 ) is installed on the engine mounting floorboard 30.
  • the following effect can be achieved.
  • a damage or the like to an oil seal portion in a flywheel 27 of the engine 22 or a drive shaft from the engine 22 to the compressor 23 result in flying the engine oil in all directions, or in leaking the engine oil out of a pipe or the like of the engine 22. Therefore, because the engine mounting floorboard 30 is formed so as to be a dish-shaped or a box-shaped configuration, the engine oil can be collected only by the engine mounting floorboard 30, thereby preventing the engine oil from leaking out of the outside of the engine mounting floorboard 30, if perchance the engine oil is leaked.
  • the floorboard 40 for the refrigerating machine and the engine mounting floorboard 30 are separately comprised, whereby the discharge of the condensate water due to the dropwise condensation, and the collection of the engine oil while it is leaked can be performed respectively.
  • the floorboard 40 for the refrigerating machine and the engine mounting floorboard 30 are easily manufacturable, as they are simply formed so as to be a dish-shaped or a box-shaped configuration. Because the engine 22 is installed only on the engine mounting floorboard 30, the amplitude of the floorboard due to the vibration of the engine 22 can be restrained, compared to the case when the whole bottom face of the engine-driven heat pump 1 is only comprised of one floorboard. Briefly, the noise by the engine-driven heat pump 1 can be reduced.
  • Fig. 3 illustrates only the engine 22 in the equipment compartment 20, so as to explain it simply.
  • the swash plate 50 is provided on each of the inner sides of the outer plates 21 at the front and the rear sides in the equipment compartment 20.
  • the swash plate 50 is comprised of an upper straight portion 50a, a sloped portion 50b and a lower straight portion 50c, from a lateral view of the engine-driven heat pump 1.
  • the upper straight portion 50a is adjacent to the outer plate 21 at the front or the rear side, and the sloped portion 50b is inclined toward the inner portion of the engine mounting floorboard 30, as well as the lower straight portion 50c is provided so as to be located inwardly from the sidewall 33 of the engine mounting floorboard 30 toward the engine 22. Also, the lower end of the lower straight portion 50c is extended from the upper end of the sidewall 33 to the upper surface of the bottom face 31 in the engine mounting floorboard downward thereof.
  • the height of the swash plate 50 is formed so that it becomes at least that of the engine 22 installed at the equipment compartment 20 or higher.
  • the thickness of the swash plate 50 which is not especially limited, is formed so that it becomes the same thickness as the outer plate 21in the present embodiment.
  • the swash plate 50 is formed so that it has the wide capable of covering the power transmitting portion from the engine 22 to the compressor 23, and it has the wide capable of covering at least the flywheel 27, from a front view of the engine-driven heat pump 1 (see Fig. 1 ).
  • the engine oil which flies in all directions due to the damage or the like to the oil seal portion in a flywheel 27 of the engine 22 or the drive shaft from the engine 22 to the compressor 23, can be assuredly received, so that it can be collected in the engine mounting floorboard 30, by the slope of the wash plate 50.
  • the collecting performance so as to collect it in the engine mounting floorboard 30 can be improved. Because the swash plate 50 is installed adjacent to a power transmitting portion from the engine 22 to the compressor 23 such as the flywheel 27, the increase in weight of the outer plates 21 involving the swash plates 50 can be minimized, so that the outer plates 21 involving the swash plates 50 can be dismounted easily.
  • the construction of the floorboard in the engine-driven heat pump in which the floorboard for the refrigerating machine and the engine mounting floorboard are separately formed, is widely applicable in the industrial instruments such as the air-conditioning system having the refrigerating machine and the engine.
EP08711642.2A 2007-02-21 2008-02-20 Engine-driven heat pump Not-in-force EP2113729B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007041347A JP4764363B2 (ja) 2007-02-21 2007-02-21 エンジン駆動式ヒートポンプ
PCT/JP2008/052836 WO2008102798A1 (ja) 2007-02-21 2008-02-20 エンジン駆動式ヒートポンプ

Publications (3)

Publication Number Publication Date
EP2113729A1 EP2113729A1 (en) 2009-11-04
EP2113729A4 EP2113729A4 (en) 2014-02-26
EP2113729B1 true EP2113729B1 (en) 2018-07-25

Family

ID=39710072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08711642.2A Not-in-force EP2113729B1 (en) 2007-02-21 2008-02-20 Engine-driven heat pump

Country Status (5)

Country Link
EP (1) EP2113729B1 (ja)
JP (1) JP4764363B2 (ja)
KR (1) KR101181881B1 (ja)
CN (1) CN101595352B (ja)
WO (1) WO2008102798A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2523243C1 (ru) * 2012-12-03 2014-07-20 Ильдус Юнусович Абдуллин Установка для отопления и/или горячего водоснабжения

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984993A (en) * 1957-07-03 1961-05-23 Thomas W Carraway Control mechanism for cooling and condensing equipment
JP3931709B2 (ja) * 2002-03-20 2007-06-20 アイシン精機株式会社 ガスエンジン駆動式空調装置
CN2545549Y (zh) * 2002-05-13 2003-04-16 广东三洋科龙冷柜有限公司 冰箱、冷柜的压缩机仓
JP2004286241A (ja) * 2003-03-19 2004-10-14 Yanmar Co Ltd エンジン駆動ヒートポンプ
JP2006071196A (ja) * 2004-09-02 2006-03-16 Yanmar Co Ltd エンジンヒートポンプの室外機
JP2006071199A (ja) * 2004-09-02 2006-03-16 Yanmar Co Ltd エンジンヒートポンプの室外機
CN2811873Y (zh) * 2005-07-08 2006-08-30 河南新飞电器有限公司 一种空调压缩机散热装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
KR101181881B1 (ko) 2012-09-11
CN101595352A (zh) 2009-12-02
EP2113729A1 (en) 2009-11-04
CN101595352B (zh) 2012-07-04
KR20090086131A (ko) 2009-08-10
WO2008102798A1 (ja) 2008-08-28
JP4764363B2 (ja) 2011-08-31
EP2113729A4 (en) 2014-02-26
JP2008202895A (ja) 2008-09-04

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