WO2014119073A1 - Chiller - Google Patents

Chiller Download PDF

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Publication number
WO2014119073A1
WO2014119073A1 PCT/JP2013/079773 JP2013079773W WO2014119073A1 WO 2014119073 A1 WO2014119073 A1 WO 2014119073A1 JP 2013079773 W JP2013079773 W JP 2013079773W WO 2014119073 A1 WO2014119073 A1 WO 2014119073A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
heat exchanger
water
chiller
heat pump
Prior art date
Application number
PCT/JP2013/079773
Other languages
French (fr)
Japanese (ja)
Inventor
大塚　伸一
久保　孝典
徹 北岡
田中　雄一郎
晶 村井
Original Assignee
ヤンマー株式会社
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
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Application filed by ヤンマー株式会社 filed Critical ヤンマー株式会社
Publication of WO2014119073A1 publication Critical patent/WO2014119073A1/en

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Classifications

    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the present invention relates to a chiller that exchanges heat between refrigerant and water in a heat pump including a compressor.
  • Patent Document 1 discloses a chiller unit using a heat pump equipped with a compressor.
  • Patent Document 1 discloses a configuration in which a chiller unit equipped with a water-refrigerant heat exchanger is separate from a heat pump unit (outdoor unit). For this reason, piping work for connecting the heat pump unit and the water-refrigerant heat exchanger is required at the installation site of the chiller.
  • the present invention provides a chiller that can eliminate the piping work for connecting the heat pump unit and the water-refrigerant heat exchanger at the installation site.
  • a chiller according to the present invention is a chiller that performs heat exchange between refrigerant and water of a heat pump including a compressor, and includes a package that accommodates the entire heat pump.
  • the heat pump includes a heat pump having an air-refrigerant heat exchanger.
  • the unit is equipped with a water-refrigerant heat exchanger, the water-refrigerant heat exchanger is disposed at a position facing the side plate of the package, and the air-refrigerant heat exchanger is provided by the water-refrigerant heat exchanger. Is also arranged at a high position.
  • the gas refrigerant pipe and the liquid refrigerant pipe of the heat pump unit are connected to the water-refrigerant heat exchanger using a flange connection.
  • the gas refrigerant pipe and the liquid refrigerant pipe of the heat pump unit are connected to the water-refrigerant heat exchanger using a flange connection.
  • the expansion valve and the four-way valve of the heat pump unit are provided at a higher position than the water-refrigerant heat exchanger.
  • the electric wiring group of the heat pump is provided at a position higher than the water-refrigerant heat exchanger.
  • the chiller according to the present invention can eliminate the piping work for connecting the heat pump unit and the water-refrigerant heat exchanger at the installation site.
  • FIG. 1 is a configuration diagram of a chiller 1000 according to the present embodiment.
  • the chiller 1000 is configured to exchange heat between the refrigerant of the heat pump and water.
  • the chiller 1000 includes a component (heat pump component) 1-12 that constitutes a heat pump, and is configured to exchange heat between the refrigerant of the heat pump and water.
  • the heat pump includes a heat pump unit 100 and a W / R heat exchanger (water-refrigerant heat exchanger) 9.
  • the heat pump includes two compressors 1, an oil separator 2, a four-way valve 3, two A / R heat exchangers (air-refrigerant heat exchanger) 4, a bridge circuit 5, a receiver 6, three main expansion valves 7, 2 Two auxiliary expansion valves 8, a W / R heat exchanger (water-refrigerant heat exchanger) 9, an auxiliary evaporator 10, an accumulator 11, and a refrigerant path 12 are provided.
  • the refrigerant path 12 connects these devices 1-11.
  • the compressor 1 causes the refrigerant to flow along the refrigerant path 12.
  • the oil separator 2 separates oil from the refrigerant discharged from the compressor 1.
  • the four-way valve 3 switches the flow direction of the refrigerant in the refrigerant path 12 so that the heating operation or the cooling operation is performed.
  • the A / R heat exchanger 4 functions as a condenser or an evaporator according to the execution of the cooling operation or the heating operation, and performs heat exchange between the outside air and the refrigerant.
  • the bridge circuit 5 induces the refrigerant flow so that the auxiliary evaporator 10 functions as an evaporator regardless of whether the heating operation or the cooling operation is performed.
  • the receiver 6 stores excess refrigerant as necessary.
  • the main expansion valve 7 expands the refrigerant flowing between the A / R heat exchanger 4 and the W / R heat exchanger 9.
  • the auxiliary expansion valve 8 expands the refrigerant flowing between the A / R heat exchanger 4 or the W / R heat exchanger 9 and the auxiliary evaporator 10.
  • the W / R heat exchanger 9 functions as an evaporator or a condenser according to the execution of the cooling operation or the heating operation, and performs heat exchange between water and the refrigerant.
  • a refrigerant path 12 and a water path 20 are arranged in parallel.
  • the auxiliary evaporator 10 performs heat exchange between the high-temperature heat medium from the heat source and the refrigerant.
  • the heat source is an engine that drives the compressor 1
  • the high-temperature heat medium is engine coolant that carries engine exhaust heat.
  • a refrigerant path 12 and a cooling water path 30 are arranged in parallel.
  • the accumulator 11 temporarily stores the refrigerant and suppresses the pulsation of the refrigerant.
  • the heat pump unit 100 includes two service ports 13 and 14.
  • the service ports 13 and 14 are ports that open to the refrigerant path 12 and are used to replenish or discharge the refrigerant.
  • the service port 13 is disposed between the A / R heat exchanger 4 and the bridge circuit 5.
  • the service port 14 is disposed between the W / R heat exchanger 9 and the bridge circuit 5.
  • the four-way valve 3 is configured to be switched to either the cooling position or the heating position.
  • a cooling operation for cooling the water flowing through the W / R heat exchanger 9 is executed.
  • a heating operation for heating the water flowing through the W / R heat exchanger 9 is executed.
  • the refrigerant flows from the compressor 1 to the oil separator 2, the four-way valve 3, the A / R heat exchanger 4, the bridge circuit 5, the receiver 6, the main expansion valve 7, the bridge circuit 5, and the W / R heat exchanger 9. , Flow through the four-way valve 3 and the accumulator 11, and return to the compressor 1.
  • engine exhaust heat is not used, so the main expansion valve 8 is closed and the refrigerant does not flow through the auxiliary evaporator 10.
  • the refrigerant flows from the compressor 1 to the oil separator 2, the four-way valve 3, the W / R heat exchanger 9, the bridge circuit 5, the receiver 6, the main expansion valve 7, the bridge circuit 5, and the A / R heat exchanger 4. , Flow through the four-way valve 3 and the accumulator 11, and return to the compressor 1.
  • engine exhaust heat may be used as a heat source for heating the refrigerant.
  • the cold auxiliary expansion valve 8 is opened.
  • the refrigerant further branches from the receiver 6 so as to flow through the auxiliary expansion valve 8, passes through the auxiliary evaporator 10, joins in the accumulator 11, and returns to the compressor 1.
  • FIG. 2 is an external front view of the chiller 1000.
  • the chiller 1000 includes a package 40 that houses the entire heat pump, and an anchor rail 41.
  • the package 40 has a rectangular parallelepiped shape and includes an upper part 50 and a lower part 60.
  • the upper part 50 includes a top plate 51 that closes the ceiling surface and a plurality of upper plates 52 that close four side surfaces.
  • the lower portion 60 includes a bottom plate 61 that closes the bottom surface and a plurality of lower plates 62 that close four side surfaces.
  • the A / R heat exchanger 4 is disposed in the upper part 50.
  • the W / R heat exchanger 9 is disposed in the lower part 60. For this reason, the A / R heat exchanger 4 is arranged at a position higher than the W / R heat exchanger 9.
  • a water inlet 91 and a water outlet 92 of the W / R heat exchanger 9 are opened to the outside of the package 40.
  • FIG. 3 is a front view of the heat pump components arranged in the lower part 60 of the package 40.
  • FIG. 4 is a perspective view of the heat pump component disposed in the lower portion 60 of the package 40 as viewed obliquely from the front. 3 and 4, the W / R heat exchanger 9 is located in the front part in the lower part 60 and is in a position facing the lower plate 62 (FIG. 2) on the front side.
  • the auxiliary evaporator 10 is located on the left side of the W / R heat exchanger 9.
  • the four-way valve 3 and the expansion valves 7 and 8 are located higher than the W / R heat exchanger 9.
  • a control box 15 for storing the control device is disposed behind the W / R heat exchanger 9.
  • the compressor 1 and the engine that drives the compressor 1 are located on the left side of the W / R heat exchanger 9, but are not shown in FIGS. 2-6.
  • FIG. 5 is a perspective view of the heat pump components arranged in the lower portion 60 of the package 40 as viewed obliquely from the rear.
  • a gas refrigerant pipe 16 and a liquid refrigerant pipe 17 are arranged behind the W / R heat exchanger 9.
  • the gas refrigerant pipe 16 is a refrigerant pipe connecting the W / R heat exchanger 9 and the four-way valve 3 in FIG.
  • the liquid refrigerant pipe 17 is a refrigerant pipe connecting the W / R heat exchanger 9 and the block circuit 5 in FIG.
  • the W / R heat exchanger 9 includes a gas refrigerant connection port 93 and a liquid refrigerant connection port 94 that open to the casing 90 of the W / R heat exchanger 9.
  • the front end of the gas refrigerant pipe 16 has a flange 16a, and the casing 90 has a receiving portion corresponding to the flange 16a around the gas refrigerant connection port 93.
  • the gas refrigerant pipe 16 is connected to the gas refrigerant connection port 93 using a flange connection.
  • the tip portion of the liquid refrigerant pipe 17 has a flange 17a, and the casing 90 has a receiving portion corresponding to the flange 17a around the liquid refrigerant connection port 94.
  • the liquid refrigerant pipe 17 is connected to the liquid refrigerant connection port 94 using a flange connection.
  • a receiver 6 and an accumulator 11 are disposed behind the refrigerant pipes 16 and 17. Furthermore, although the control box 15 is arrange
  • FIG. 6 is a perspective view of the heat pump components arranged in the lower portion 60 of the package 40 as viewed obliquely from the front.
  • FIG. 6 shows the electrical wiring group 18.
  • the electrical wiring group 18 connects between heat pump components that are electronically controlled and / or powered.
  • the electrical wiring group 18 is disposed at a position higher than the W / R heat exchanger 9.
  • the lower part 60 of the package 40 has an open space S above the W / R heat exchanger 9. No other equipment is arranged in the open space S.
  • the chiller 1000 according to the present embodiment has the following operations and effects by having the above-described configuration.
  • the chiller 1000 includes a package 40 that houses the entire heat pump.
  • the heat pump includes a heat pump unit 100 having an air-refrigerant heat exchanger 4 and a water-refrigerant heat exchanger 9.
  • the water-refrigerant heat exchanger 9 is disposed at a position facing the side plate (lower plate 62) of the package 40.
  • the water-refrigerant heat exchanger 9 is disposed at a position higher than the air-refrigerant heat exchanger 4.
  • the chiller 1000 can eliminate the need for piping work for connecting the heat pump unit 100 and the water-refrigerant heat exchanger 9 at the installation site.
  • the chiller 1000 can eliminate brazing in the connection work of the gas refrigerant pipe and the liquid refrigerant pipe and the water-refrigerant heat exchanger, and can reduce the number of work steps of the connection work.
  • the package 40 has an open space S above the water-refrigerant heat exchanger 9.
  • the chiller 1000 according to the present embodiment enables the water-refrigerant heat exchanger 9 to be assembled from above.
  • the expansion valves 7 and 8 and the four-way valve 3 of the heat pump unit 100 are provided at a position higher than the water-refrigerant heat exchanger 9.
  • the chiller 1000 can prevent dew condensation water generated on the outer surface of the water-refrigerant heat exchanger 9 from dripping onto the expansion valves 7, 8 and the four-way valve 3.
  • the electric wiring group 18 of the heat pump is provided at a position higher than the water-refrigerant heat exchanger 9.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

A chiller does not require piping work for connecting a heat pump unit and a water-refrigerant heat exchanger at an installation site. A chiller (1000) exchanges heat between a refrigerant in a heat pump and water, the heat pump being provided with a compressor (1). The chiller (1000) is provided with a package (40) for housing the entire heat pump. The heat pump is provided with a heat pump unit (100) having an air-refrigerant heat exchanger (4), and also with a water-refrigerant heat exchanger (9). The water-refrigerant heat exchanger (9) is disposed at a position which faces a side plate (62) of the package (40). The air-refrigerant heat exchanger (4) is disposed at a higher position than the water-refrigerant heat exchanger (9).

Description

チラーChiller
　本発明は、圧縮機を備えるヒートポンプの冷媒と水の間で熱交換を行うチラーに関する。 The present invention relates to a chiller that exchanges heat between refrigerant and water in a heat pump including a compressor.
　特許文献１は、圧縮機を備えるヒートポンプを利用したチラーユニットを開示している。 Patent Document 1 discloses a chiller unit using a heat pump equipped with a compressor.
特開２００９－２３６３３９号公報JP 2009-236339 A
　特許文献１は、水－冷媒熱交換器を搭載するチラーユニットを、ヒートポンプユニット（室外機）と別のユニットとする構成を開示している。このため、チラーの据え付け現場において、ヒートポンプユニットと水－冷媒熱交換器の間を接続する配管工事が必要となる。 Patent Document 1 discloses a configuration in which a chiller unit equipped with a water-refrigerant heat exchanger is separate from a heat pump unit (outdoor unit). For this reason, piping work for connecting the heat pump unit and the water-refrigerant heat exchanger is required at the installation site of the chiller.
　そこで、本発明は、据え付け現場において、ヒートポンプユニットと水－冷媒熱交換器の間を接続する配管工事を不要にできるチラーを提供する。 Therefore, the present invention provides a chiller that can eliminate the piping work for connecting the heat pump unit and the water-refrigerant heat exchanger at the installation site.
　本発明に係るチラーは、圧縮機を備えるヒートポンプの冷媒と水の間で熱交換を行うチラーにおいて、ヒートポンプの全体を収納するパッケージを備えており、ヒートポンプは、空気－冷媒熱交換器を有するヒートポンプユニットと、水－冷媒熱交換器を備えており、水－冷媒熱交換器は、パッケージの側板に対面する位置に配置されており、空気－冷媒熱交換器は、水－冷媒熱交換器よりも高い位置に配置されている、ことを特徴とする。 A chiller according to the present invention is a chiller that performs heat exchange between refrigerant and water of a heat pump including a compressor, and includes a package that accommodates the entire heat pump. The heat pump includes a heat pump having an air-refrigerant heat exchanger. The unit is equipped with a water-refrigerant heat exchanger, the water-refrigerant heat exchanger is disposed at a position facing the side plate of the package, and the air-refrigerant heat exchanger is provided by the water-refrigerant heat exchanger. Is also arranged at a high position.
　前記チラーにおいて、フランジ接続を用いて、ヒートポンプユニットのガス冷媒管及び液冷媒管は水－冷媒熱交換器に接続されている。 In the chiller, the gas refrigerant pipe and the liquid refrigerant pipe of the heat pump unit are connected to the water-refrigerant heat exchanger using a flange connection.
　前記チラーにおいて、フランジ接続を用いて、ヒートポンプユニットのガス冷媒管及び液冷媒管は水－冷媒熱交換器に接続されている。 In the chiller, the gas refrigerant pipe and the liquid refrigerant pipe of the heat pump unit are connected to the water-refrigerant heat exchanger using a flange connection.
　前記チラーにおいて、ヒートポンプユニットの膨張弁及び四方弁は、水－冷媒熱交換器よりも高い位置に設けられている。 In the chiller, the expansion valve and the four-way valve of the heat pump unit are provided at a higher position than the water-refrigerant heat exchanger.
　前記チラーにおいて、ヒートポンプの電気配線群は、水－冷媒熱交換器よりも高い位置に設けられている。 In the chiller, the electric wiring group of the heat pump is provided at a position higher than the water-refrigerant heat exchanger.
　本発明に係るチラーは、据え付け現場において、ヒートポンプユニットと水－冷媒熱交換器の間を接続する配管工事を不要にできる。 The chiller according to the present invention can eliminate the piping work for connecting the heat pump unit and the water-refrigerant heat exchanger at the installation site.
本実施形態に係るチラーの構成図である。It is a lineblock diagram of the chiller concerning this embodiment. チラーの外観正面図である。It is an external appearance front view of a chiller. パッケージの下部内に配置されたヒートポンプ部品の正面図である。It is a front view of the heat pump components arrange | positioned in the lower part of a package. 斜め前方から見たパッケージの下部内に配置されたヒートポンプ部品の斜視図である。It is a perspective view of the heat pump component arrange | positioned in the lower part of the package seen from diagonally forward. 斜め後方から見たパッケージの下部内に配置されたヒートポンプ部品の斜視図である。It is a perspective view of the heat pump components arrange | positioned in the lower part of the package seen from diagonally back. 斜め前方から見たパッケージの下部内に配置されたヒートポンプ部品の斜視図である。It is a perspective view of the heat pump component arrange | positioned in the lower part of the package seen from diagonally forward.
　図１は、本実施形態に係るチラー１０００の構成図である。チラー１０００は、ヒートポンプの冷媒と水との間で熱交換を行うように構成されている。チラー１０００は、ヒートポンプを構成する部品（ヒートポンプ部品）１－１２を備えており、ヒートポンプの冷媒と水との間で熱交換を行うように構成されている。ヒートポンプは、ヒートポンプユニット１００と、Ｗ／Ｒ熱交換器（水－冷媒熱交換器）９とからなっている。 FIG. 1 is a configuration diagram of a chiller 1000 according to the present embodiment. The chiller 1000 is configured to exchange heat between the refrigerant of the heat pump and water. The chiller 1000 includes a component (heat pump component) 1-12 that constitutes a heat pump, and is configured to exchange heat between the refrigerant of the heat pump and water. The heat pump includes a heat pump unit 100 and a W / R heat exchanger (water-refrigerant heat exchanger) 9.
　ヒートポンプは、２つの圧縮機１、オイルセパレータ２、四方弁３、２つのＡ／Ｒ熱交換器（空気－冷媒熱交換器）４、ブリッジ回路５、レシーバ６、３つの主膨張弁７、２つの補助膨張弁８、Ｗ／Ｒ熱交換器（水－冷媒熱交換器）９、補助蒸発器１０、アキュームレータ１１、及び冷媒経路１２を備えている。冷媒経路１２は、これらの機器１－１１を接続している。圧縮機１は冷媒を冷媒経路１２に沿って流す。オイルセパレータ２は、圧縮機１から吐出される冷媒からオイルを分離する。四方弁３は、加熱運転又は冷却運転が実行されるように、冷媒経路１２における冷媒の流れ方向を切り替える。Ａ／Ｒ熱交換器４は、冷却運転又は加熱運転の実行に応じて凝縮器又は蒸発器として機能し、外気と冷媒との間で熱交換を行う。ブリッジ回路５は、加熱運転及び冷却運転のどちらが実行されていても、補助蒸発器１０が蒸発器として機能するように冷媒の流れを誘導する。レシーバ６は、余剰の冷媒を必要に応じて蓄える。主膨張弁７は、Ａ／Ｒ熱交換器４とＷ／Ｒ熱交換器９との間を流れる冷媒を膨張させる。補助膨張弁８は、Ａ／Ｒ熱交換器４又はＷ／Ｒ熱交換器９と補助蒸発器１０との間を流れる冷媒を膨張させる。Ｗ／Ｒ熱交換器９は、冷却運転又は加熱運転の実行に応じて蒸発器又は凝縮器として機能し、水と冷媒との間で熱交換を行う。Ｗ／Ｒ熱交換器９には、冷媒経路１２及び水経路２０が並列に配置されている。補助蒸発器１０は、発熱源からの高温熱媒体と冷媒との間で熱交換を行う。本実施形態では、発熱源は圧縮機１を駆動するエンジンであり、高温熱媒体はエンジン排熱を運ぶエンジン冷却水である。補助蒸発器１０には、冷媒経路１２及び冷却水経路３０が並列に配置されている。アキュームレータ１１は、冷媒を一時的に蓄え、冷媒の脈動を抑制する。 The heat pump includes two compressors 1, an oil separator 2, a four-way valve 3, two A / R heat exchangers (air-refrigerant heat exchanger) 4, a bridge circuit 5, a receiver 6, three main expansion valves 7, 2 Two auxiliary expansion valves 8, a W / R heat exchanger (water-refrigerant heat exchanger) 9, an auxiliary evaporator 10, an accumulator 11, and a refrigerant path 12 are provided. The refrigerant path 12 connects these devices 1-11. The compressor 1 causes the refrigerant to flow along the refrigerant path 12. The oil separator 2 separates oil from the refrigerant discharged from the compressor 1. The four-way valve 3 switches the flow direction of the refrigerant in the refrigerant path 12 so that the heating operation or the cooling operation is performed. The A / R heat exchanger 4 functions as a condenser or an evaporator according to the execution of the cooling operation or the heating operation, and performs heat exchange between the outside air and the refrigerant. The bridge circuit 5 induces the refrigerant flow so that the auxiliary evaporator 10 functions as an evaporator regardless of whether the heating operation or the cooling operation is performed. The receiver 6 stores excess refrigerant as necessary. The main expansion valve 7 expands the refrigerant flowing between the A / R heat exchanger 4 and the W / R heat exchanger 9. The auxiliary expansion valve 8 expands the refrigerant flowing between the A / R heat exchanger 4 or the W / R heat exchanger 9 and the auxiliary evaporator 10. The W / R heat exchanger 9 functions as an evaporator or a condenser according to the execution of the cooling operation or the heating operation, and performs heat exchange between water and the refrigerant. In the W / R heat exchanger 9, a refrigerant path 12 and a water path 20 are arranged in parallel. The auxiliary evaporator 10 performs heat exchange between the high-temperature heat medium from the heat source and the refrigerant. In the present embodiment, the heat source is an engine that drives the compressor 1, and the high-temperature heat medium is engine coolant that carries engine exhaust heat. In the auxiliary evaporator 10, a refrigerant path 12 and a cooling water path 30 are arranged in parallel. The accumulator 11 temporarily stores the refrigerant and suppresses the pulsation of the refrigerant.
　ヒートポンプユニット１００は、２つのサービスポート１３、１４を備えている。サービスポート１３、１４は、冷媒経路１２に開口するポートであり、冷媒を補給する又は冷媒を排出するために用いられる。サービスポート１３は、Ａ／Ｒ熱交換器４とブリッジ回路５の間に配置されている。サービスポート１４は、Ｗ／Ｒ熱交換器９とブリッジ回路５の間に配置されている。 The heat pump unit 100 includes two service ports 13 and 14. The service ports 13 and 14 are ports that open to the refrigerant path 12 and are used to replenish or discharge the refrigerant. The service port 13 is disposed between the A / R heat exchanger 4 and the bridge circuit 5. The service port 14 is disposed between the W / R heat exchanger 9 and the bridge circuit 5.
　冷却運転及び加熱運転を説明する。四方弁３は、冷却位置及び加熱位置のいずれか一方に切り替えられるように構成されている。四方弁３が冷却位置にあるとき、Ｗ／Ｒ熱交換器９を流れる水を冷却する冷却運転が実行される。四方弁３が加熱位置にあるとき、Ｗ／Ｒ熱交換器９を流れる水を加熱する加熱運転が実行される。 冷却 Explain the cooling operation and heating operation. The four-way valve 3 is configured to be switched to either the cooling position or the heating position. When the four-way valve 3 is in the cooling position, a cooling operation for cooling the water flowing through the W / R heat exchanger 9 is executed. When the four-way valve 3 is in the heating position, a heating operation for heating the water flowing through the W / R heat exchanger 9 is executed.
　冷却運転では、冷媒は圧縮機１から、オイルセパレータ２、四方弁３、Ａ／Ｒ熱交換器４、ブリッジ回路５、レシーバ６、主膨張弁７、ブリッジ回路５、Ｗ／Ｒ熱交換器９、四方弁３、及びアキュームレータ１１を経由して流され、圧縮機１に戻る。冷却運転では、エンジン排熱を利用しないので、主膨張弁８は閉じられており、冷媒は補助蒸発器１０を流れない。 In the cooling operation, the refrigerant flows from the compressor 1 to the oil separator 2, the four-way valve 3, the A / R heat exchanger 4, the bridge circuit 5, the receiver 6, the main expansion valve 7, the bridge circuit 5, and the W / R heat exchanger 9. , Flow through the four-way valve 3 and the accumulator 11, and return to the compressor 1. In the cooling operation, engine exhaust heat is not used, so the main expansion valve 8 is closed and the refrigerant does not flow through the auxiliary evaporator 10.
　加熱運転では、冷媒は圧縮機１から、オイルセパレータ２、四方弁３、Ｗ／Ｒ熱交換器９、ブリッジ回路５、レシーバ６、主膨張弁７、ブリッジ回路５、Ａ／Ｒ熱交換器４、四方弁３、及びアキュームレータ１１を経由して流され、圧縮機１に戻る。加熱運転では、冷媒を加熱する熱源としてエンジン排熱が利用される場合がある。この場合、冷補助膨張弁８が開かれる。冷補助膨張弁８が開かれているとき、冷媒は更に、レシーバ６から補助膨張弁８を流れるように分岐し、補助蒸発器１０を経由し、アキュームレータ１１で合流し、圧縮機１に戻る。 In the heating operation, the refrigerant flows from the compressor 1 to the oil separator 2, the four-way valve 3, the W / R heat exchanger 9, the bridge circuit 5, the receiver 6, the main expansion valve 7, the bridge circuit 5, and the A / R heat exchanger 4. , Flow through the four-way valve 3 and the accumulator 11, and return to the compressor 1. In the heating operation, engine exhaust heat may be used as a heat source for heating the refrigerant. In this case, the cold auxiliary expansion valve 8 is opened. When the cold auxiliary expansion valve 8 is opened, the refrigerant further branches from the receiver 6 so as to flow through the auxiliary expansion valve 8, passes through the auxiliary evaporator 10, joins in the accumulator 11, and returns to the compressor 1.
　図２－６を参照して、チラー１０００におけるＷ／Ｒ熱交換器９のレイアウトを説明する。 Referring to FIG. 2-6, the layout of the W / R heat exchanger 9 in the chiller 1000 will be described.
　図２は、チラー１０００の外観正面図である。チラー１０００は、ヒートポンプの全体を収納するパッケージ４０、及びアンカーレール４１を備えている。パッケージ４０は、直方体形状を有しており、上部５０及び下部６０からなっている。上部５０は、天井面を閉じる天板５１と、４つの側面を閉じる複数の上側板５２を備えている。下部６０は、底面を閉じる底板６１と、４つの側面を閉じる複数の下側板６２を備えている。Ａ／Ｒ熱交換器４は上部５０内に配置されている。Ｗ／Ｒ熱交換器９は下部６０内に配置されている。このため、Ａ／Ｒ熱交換器４はＷ／Ｒ熱交換器９よりも高い位置に配置されている。Ｗ／Ｒ熱交換器９の水入口９１及び水出口９２は、パッケージ４０の外部に開口している。ここで、水入口９１及び水出口９２の開口側を、パッケージ４０の正面としている。 FIG. 2 is an external front view of the chiller 1000. The chiller 1000 includes a package 40 that houses the entire heat pump, and an anchor rail 41. The package 40 has a rectangular parallelepiped shape and includes an upper part 50 and a lower part 60. The upper part 50 includes a top plate 51 that closes the ceiling surface and a plurality of upper plates 52 that close four side surfaces. The lower portion 60 includes a bottom plate 61 that closes the bottom surface and a plurality of lower plates 62 that close four side surfaces. The A / R heat exchanger 4 is disposed in the upper part 50. The W / R heat exchanger 9 is disposed in the lower part 60. For this reason, the A / R heat exchanger 4 is arranged at a position higher than the W / R heat exchanger 9. A water inlet 91 and a water outlet 92 of the W / R heat exchanger 9 are opened to the outside of the package 40. Here, the opening side of the water inlet 91 and the water outlet 92 is the front surface of the package 40.
　図３は、パッケージ４０の下部６０内に配置されたヒートポンプ部品の正面図である。図４は、斜め前方から見たパッケージ４０の下部６０内に配置されたヒートポンプ部品の斜視図である。図３、４において、Ｗ／Ｒ熱交換器９は、下部６０内の前部に位置しており、前面側の下側板６２（図２）に対面する位置にある。補助蒸発器１０は、Ｗ／Ｒ熱交換器９の左側に位置している。四方弁３及び膨張弁７、８は、Ｗ／Ｒ熱交換器９よりも高い位置にある。また、制御機器を格納する制御ボックス１５がＷ／Ｒ熱交換器９の後方に配置されている。圧縮機１及び圧縮機１を駆動するエンジンは、Ｗ／Ｒ熱交換器９の左側に位置するが、図２－６では図示されていない。 FIG. 3 is a front view of the heat pump components arranged in the lower part 60 of the package 40. FIG. 4 is a perspective view of the heat pump component disposed in the lower portion 60 of the package 40 as viewed obliquely from the front. 3 and 4, the W / R heat exchanger 9 is located in the front part in the lower part 60 and is in a position facing the lower plate 62 (FIG. 2) on the front side. The auxiliary evaporator 10 is located on the left side of the W / R heat exchanger 9. The four-way valve 3 and the expansion valves 7 and 8 are located higher than the W / R heat exchanger 9. In addition, a control box 15 for storing the control device is disposed behind the W / R heat exchanger 9. The compressor 1 and the engine that drives the compressor 1 are located on the left side of the W / R heat exchanger 9, but are not shown in FIGS. 2-6.
　図５は、斜め後方から見たパッケージ４０の下部６０内に配置されたヒートポンプ部品の斜視図である。ガス冷媒管１６及び液冷媒管１７が、Ｗ／Ｒ熱交換器９の後方に配置されている。ガス冷媒管１６は、図１においてＷ／Ｒ熱交換器９と四方弁３を接続する冷媒配管である。液冷媒管１７は、図１においてＷ／Ｒ熱交換器９とブロック回路５を接続する冷媒配管である。Ｗ／Ｒ熱交換器９は、Ｗ／Ｒ熱交換器９のケーシング９０に開口するガス冷媒接続口９３及び液冷媒接続口９４を備えている。ガス冷媒管１６の先端部はフランジ１６ａを有しており、ケーシング９０はガス冷媒接続口９３周辺でフランジ１６ａに対応する受け部を有している。ガス冷媒管１６は、フランジ接続を用いてガス冷媒接続口９３に接続される。同様に、液冷媒管１７の先端部はフランジ１７ａを有しており、ケーシング９０は液冷媒接続口９４周辺でフランジ１７ａに対応する受け部を有している。液冷媒管１７は、フランジ接続を用いて液冷媒接続口９４に接続される。また、レシーバ６及びアキュームレータ１１が冷媒管１６、１７の後方に配置されている。更に、制御ボックス１５がレシーバ６及びアキュームレータ１１の後方に配置されているが、図５では省略されている。 FIG. 5 is a perspective view of the heat pump components arranged in the lower portion 60 of the package 40 as viewed obliquely from the rear. A gas refrigerant pipe 16 and a liquid refrigerant pipe 17 are arranged behind the W / R heat exchanger 9. The gas refrigerant pipe 16 is a refrigerant pipe connecting the W / R heat exchanger 9 and the four-way valve 3 in FIG. The liquid refrigerant pipe 17 is a refrigerant pipe connecting the W / R heat exchanger 9 and the block circuit 5 in FIG. The W / R heat exchanger 9 includes a gas refrigerant connection port 93 and a liquid refrigerant connection port 94 that open to the casing 90 of the W / R heat exchanger 9. The front end of the gas refrigerant pipe 16 has a flange 16a, and the casing 90 has a receiving portion corresponding to the flange 16a around the gas refrigerant connection port 93. The gas refrigerant pipe 16 is connected to the gas refrigerant connection port 93 using a flange connection. Similarly, the tip portion of the liquid refrigerant pipe 17 has a flange 17a, and the casing 90 has a receiving portion corresponding to the flange 17a around the liquid refrigerant connection port 94. The liquid refrigerant pipe 17 is connected to the liquid refrigerant connection port 94 using a flange connection. A receiver 6 and an accumulator 11 are disposed behind the refrigerant pipes 16 and 17. Furthermore, although the control box 15 is arrange | positioned behind the receiver 6 and the accumulator 11, it is abbreviate | omitted in FIG.
　図６は、斜め前方から見たパッケージ４０の下部６０内に配置されたヒートポンプ部品の斜視図である。図６は、電気配線群１８を示している。電気配線群１８は、電子制御される及び／又は電力供給されるヒートポンプ部品間を接続する。電気配線群１８は、Ｗ／Ｒ熱交換器９よりも高い位置に配置されている。 FIG. 6 is a perspective view of the heat pump components arranged in the lower portion 60 of the package 40 as viewed obliquely from the front. FIG. 6 shows the electrical wiring group 18. The electrical wiring group 18 connects between heat pump components that are electronically controlled and / or powered. The electrical wiring group 18 is disposed at a position higher than the W / R heat exchanger 9.
　図３－６において、パッケージ４０の下部６０は、Ｗ／Ｒ熱交換器９の上方に開放空間Ｓを有している。この開放空間Ｓには、他の機器は配置されていない。 3-6, the lower part 60 of the package 40 has an open space S above the W / R heat exchanger 9. No other equipment is arranged in the open space S.
　本実施形態に係るチラー１０００は、上述の構成を有することにより、次の作用、効果を有している。 The chiller 1000 according to the present embodiment has the following operations and effects by having the above-described configuration.
（１）チラー１０００は、ヒートポンプの全体を収納するパッケージ４０を備えている。ヒートポンプは、空気－冷媒熱交換器４を有するヒートポンプユニット１００と、水－冷媒熱交換器９を備えている。水－冷媒熱交換器９は、パッケージ４０の側板（下側板６２）に対面する位置に配置されている。水－冷媒熱交換器９は、空気－冷媒熱交換器４よりも高い位置に配置されている。 (1) The chiller 1000 includes a package 40 that houses the entire heat pump. The heat pump includes a heat pump unit 100 having an air-refrigerant heat exchanger 4 and a water-refrigerant heat exchanger 9. The water-refrigerant heat exchanger 9 is disposed at a position facing the side plate (lower plate 62) of the package 40. The water-refrigerant heat exchanger 9 is disposed at a position higher than the air-refrigerant heat exchanger 4.
　このため、本実施形態に係るチラー１０００は、据え付け現場において、ヒートポンプユニット１００と水－冷媒熱交換器９の間を接続する配管工事を不要にできる。 For this reason, the chiller 1000 according to this embodiment can eliminate the need for piping work for connecting the heat pump unit 100 and the water-refrigerant heat exchanger 9 at the installation site.
（２）フランジ接続を用いて、ヒートポンプユニット１００のガス冷媒管１６及び液冷媒管１７は、水－冷媒熱交換器９に接続されている。 (2) The gas refrigerant pipe 16 and the liquid refrigerant pipe 17 of the heat pump unit 100 are connected to the water-refrigerant heat exchanger 9 using a flange connection.
　高圧が掛かる冷媒配管同士をねじ込み接続を用いて接続する場合、液密性及び強度を確保するために、蝋付けを必要とする。一方、フランジ接続は、ねじ込み接続と比べて、液密性及び強度において優れている。このため、本実施形態に係るチラー１０００は、ガス冷媒管及び液冷媒管と水－冷媒熱交換器の接続作業において蝋付けを無くすことができ、接続作業の作業工数を低減できる。 When connecting refrigerant pipes with high pressure using screw connection, brazing is required to ensure liquid tightness and strength. On the other hand, the flange connection is superior in liquid tightness and strength compared to the screw connection. For this reason, the chiller 1000 according to this embodiment can eliminate brazing in the connection work of the gas refrigerant pipe and the liquid refrigerant pipe and the water-refrigerant heat exchanger, and can reduce the number of work steps of the connection work.
（３）パッケージ４０は、水－冷媒熱交換器９の上方に開放空間Ｓを有している。 (3) The package 40 has an open space S above the water-refrigerant heat exchanger 9.
　このため、本実施形態に係るチラー１０００は、上方からの水－冷媒熱交換器９の組み付けを可能にしている。 For this reason, the chiller 1000 according to the present embodiment enables the water-refrigerant heat exchanger 9 to be assembled from above.
（４）ヒートポンプユニット１００の膨張弁７、８及び四方弁３は、水－冷媒熱交換器９よりも高い位置に設けられている。 (4) The expansion valves 7 and 8 and the four-way valve 3 of the heat pump unit 100 are provided at a position higher than the water-refrigerant heat exchanger 9.
　このため、本実施形態に係るチラー１０００は、水－冷媒熱交換器９の外面に発生する結露水が膨張弁７、８及び四方弁３に滴下することを防止できる。 For this reason, the chiller 1000 according to this embodiment can prevent dew condensation water generated on the outer surface of the water-refrigerant heat exchanger 9 from dripping onto the expansion valves 7, 8 and the four-way valve 3.
（５）ヒートポンプの電気配線群１８は、水－冷媒熱交換器９よりも高い位置に設けられている。 (5) The electric wiring group 18 of the heat pump is provided at a position higher than the water-refrigerant heat exchanger 9.
　このため、水－冷媒熱交換器９の外面に発生する結露水が電気配線群１８に滴下することを防止できる。 For this reason, it is possible to prevent dew condensation water generated on the outer surface of the water-refrigerant heat exchanger 9 from dripping into the electrical wiring group 18.
　　　１　圧縮機
　　　３　四方弁
　　　４　空気－冷媒熱交換器
　　　７　主膨張弁
　　　８　補助膨張弁
　　　９　水－冷媒熱交換器
　　１６　ガス冷媒管
　１６ａ　フランジ
　　１７　液冷媒管
　１７ａ　フランジ
　　１８　電気配線群
　　４０　パッケージ
　１００　ヒートポンプユニット
１０００　チラー
　　　Ｓ　開放空間 DESCRIPTION OF SYMBOLS 1 Compressor 3 Four-way valve 4 Air-refrigerant heat exchanger 7 Main expansion valve 8 Auxiliary expansion valve 9 Water-refrigerant heat exchanger 16 Gas refrigerant pipe 16a Flange 17 Liquid refrigerant pipe 17a Flange 18 Electrical wiring group 40 Package 100 Heat pump unit 1000 Chiller S open space

Claims (5)

  1. 　圧縮機を備えるヒートポンプの冷媒と水の間で熱交換を行うチラーにおいて、
    　ヒートポンプの全体を収納するパッケージを備えており、
    　ヒートポンプは、空気－冷媒熱交換器を有するヒートポンプユニットと、水－冷媒熱交換器を備えており、
    　水－冷媒熱交換器は、パッケージの側板に対面する位置に配置されており、
    　空気－冷媒熱交換器は、水－冷媒熱交換器よりも高い位置に配置されている、ことを特徴とするチラー。     In a chiller that performs heat exchange between refrigerant and water in a heat pump equipped with a compressor,
    It has a package that houses the entire heat pump,
    The heat pump includes a heat pump unit having an air-refrigerant heat exchanger and a water-refrigerant heat exchanger.
    The water-refrigerant heat exchanger is placed in a position facing the side plate of the package,
    The chiller, wherein the air-refrigerant heat exchanger is disposed at a higher position than the water-refrigerant heat exchanger.
  2. 　請求項１に記載のチラーにおいて、
    　フランジ接続を用いて、ヒートポンプユニットのガス冷媒管及び液冷媒管は水－冷媒熱交換器に接続されている、チラー。     The chiller according to claim 1, wherein
    Using a flange connection, the gas refrigerant tube and liquid refrigerant tube of the heat pump unit are connected to a water-refrigerant heat exchanger.
  3. 　請求項１に記載のチラーにおいて、
    　パッケージは、水－冷媒熱交換器の上方に開放空間を有している、チラー。     The chiller according to claim 1, wherein
    The package has an open space above the water-refrigerant heat exchanger, the chiller.
  4. 　請求項１に記載のチラーにおいて、
    　ヒートポンプユニットの膨張弁及び四方弁は、水－冷媒熱交換器よりも高い位置に設けられている、チラー。     The chiller according to claim 1, wherein
    The chiller in which the expansion valve and the four-way valve of the heat pump unit are provided at a higher position than the water-refrigerant heat exchanger.
  5. 　請求項１に記載のチラーにおいて、
    　ヒートポンプの電気配線群は、水－冷媒熱交換器よりも高い位置に設けられている、チラー。     The chiller according to claim 1, wherein
    The chiller, in which the electrical wiring group of the heat pump is located higher than the water-refrigerant heat exchanger.
PCT/JP2013/079773 2013-01-29 2013-11-01 Chiller WO2014119073A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013014381A JP2014145525A (en) 2013-01-29 2013-01-29 Chiller
JP2013-014381 2013-01-29

Publications (1)

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WO2014119073A1 true WO2014119073A1 (en) 2014-08-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6176864A (en) * 1984-09-20 1986-04-19 三洋電機株式会社 Cooling device
JP2008145001A (en) * 2006-12-07 2008-06-26 Sharp Corp Heat pump unit
WO2012053229A1 (en) * 2010-10-18 2012-04-26 三菱電機株式会社 Refrigeration cycle system and refrigerant circulation method
JP2012184892A (en) * 2011-03-07 2012-09-27 Mitsubishi Electric Corp Outdoor unit of heat pump type water heater

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008267724A (en) * 2007-04-23 2008-11-06 Mitsubishi Electric Corp Heat pump device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6176864A (en) * 1984-09-20 1986-04-19 三洋電機株式会社 Cooling device
JP2008145001A (en) * 2006-12-07 2008-06-26 Sharp Corp Heat pump unit
WO2012053229A1 (en) * 2010-10-18 2012-04-26 三菱電機株式会社 Refrigeration cycle system and refrigerant circulation method
JP2012184892A (en) * 2011-03-07 2012-09-27 Mitsubishi Electric Corp Outdoor unit of heat pump type water heater

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