JP2011112235A - Unit number control device, unit number control method, and fluid supply system - Google Patents

Unit number control device, unit number control method, and fluid supply system Download PDF

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JP2011112235A
JP2011112235A JP2009266361A JP2009266361A JP2011112235A JP 2011112235 A JP2011112235 A JP 2011112235A JP 2009266361 A JP2009266361 A JP 2009266361A JP 2009266361 A JP2009266361 A JP 2009266361A JP 2011112235 A JP2011112235 A JP 2011112235A
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heat pump
frequency
number control
pump devices
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JP5053351B2 (en
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Koji Matsuzawa
耕司 松澤
Kazutaka Suzuki
一隆 鈴木
Nobuaki Uehara
伸哲 上原
Takahiro Ushijima
崇大 牛島
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/38—Control of compressors of heat pumps
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
    • F24F2203/021—Compression cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/335—Control of pumps, e.g. on-off control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • 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
    • F25B2400/06—Several compression cycles arranged in parallel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently control the number of heat pump units without the need of grasping air conditioning capacities of the heat pump units, in a fluid supply system including the plurality of heat pump units having compressors, and supplying the fluid heated or cooled by the heat pump units to a fluid using device. <P>SOLUTION: An operation frequency of the compressor of the prescribed heat pump unit among the plurality of heat pump units is acquired, and it is determined according to the acquired operation frequency whether the other heat pump units excluding the prescribed heat pump unit, among the plurality of heat pump units, are operated. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、例えば、複数のヒートポンプ装置を用いる流体供給システムにおいて、ヒートポンプ装置の運転台数を制御する技術に関する。   The present invention relates to a technique for controlling the number of operating heat pump devices in a fluid supply system using a plurality of heat pump devices, for example.

ヒートポンプ装置等の熱源機を複数備える空調システムにおいて、建物側の除去すべき空調負荷と、熱源機の空調能力（特性）とに基づき、熱源機の運転台数を制御することが考えられる。
特許文献１には、空調負荷データを計測して、計測した空調負荷データに基づき熱源機の運転台数を決定することについての記載がある。 In an air conditioning system including a plurality of heat source units such as a heat pump device, it is conceivable to control the number of operating heat source units based on the air conditioning load to be removed on the building side and the air conditioning capability (characteristics) of the heat source unit.
Patent Document 1 describes that air conditioning load data is measured and the number of operating heat source units is determined based on the measured air conditioning load data.

特開２００９−１２７９３６号公報JP 2009-127936 A

熱源機の運転台数を制御する台数制御装置が、空調負荷を把握するためには、計測機器（複数の配管温度計測用サーミスタ、流量計等）を設置して、空調負荷を検出する必要がある。一般に、日常的なエネルギー管理を実施していない建物（例えば、小規模な住宅やアパートなど）では、計測機器は設置されていない。このような建物に新たに計測機器を設置するにはコストがかかる。
また、台数制御装置が熱源機の空調能力を把握するには、予め空調能力を台数制御装置に入力しておくか、台数制御装置が通信回線を介して熱源機から空調能力に関する情報を取得する必要がある。しかし、熱源機を据付する据付業者が、任意に選択した熱源機を据付する場合がある。この場合には、接続される熱源機の空調能力を予め知ることはできないため、予め空調能力を台数制御装置に入力しておくことはできない。また、熱源機の据付方によっては、台数制御装置が通信回線を介して熱源機から空調能力に関する情報を取得することもできない場合がある。
この発明は、例えば、ヒートポンプ装置の空調能力を把握することなく、効率的にヒートポンプ装置の運転台数を制御することを目的とする。 In order for the unit control device that controls the number of operating heat source units to grasp the air conditioning load, it is necessary to install a measuring device (multiple piping temperature measurement thermistors, flow meters, etc.) and detect the air conditioning load. . In general, in a building where daily energy management is not performed (for example, a small house or an apartment), no measuring device is installed. It is costly to install a new measuring device in such a building.
Also, in order for the unit control device to grasp the air conditioning capability of the heat source unit, the air conditioning capability is input to the unit control unit in advance, or the unit control unit acquires information on the air conditioning capability from the heat source unit via a communication line. There is a need. However, an installation contractor who installs the heat source apparatus may install an arbitrarily selected heat source apparatus. In this case, since the air conditioning capability of the connected heat source machine cannot be known in advance, the air conditioning capability cannot be input to the unit control device in advance. Further, depending on how the heat source device is installed, the number control device may not be able to acquire information on the air conditioning capability from the heat source device via the communication line.
For example, an object of the present invention is to efficiently control the number of operating heat pump devices without grasping the air conditioning capability of the heat pump device.

この発明に係る台数制御装置は、例えば、
圧縮機を有する複数台のヒートポンプ装置を備え、前記ヒートポンプ装置で加熱又は冷却した流体を流体利用装置へ供給する流体供給システムにおいて、前記複数台のヒートポンプ装置の運転台数を制御をする台数制御装置であり、
前記複数台のヒートポンプ装置のうちの所定のヒートポンプ装置が備える前記圧縮機の運転周波数を取得する周波数取得部と、
前記周波数取得部が取得した運転周波数に応じて、前記複数台のヒートポンプ装置のうちの前記所定のヒートポンプ装置を除く他のヒートポンプ装置を運転させるか否かを決定する台数制御部と
を備えることを特徴とする。 The number control device according to the present invention is, for example,
In a fluid supply system comprising a plurality of heat pump devices having compressors and supplying fluid heated or cooled by the heat pump device to a fluid utilization device, a unit control device for controlling the number of operating the plurality of heat pump devices. Yes,
A frequency acquisition unit that acquires an operating frequency of the compressor included in a predetermined heat pump device of the plurality of heat pump devices;
A unit control unit for determining whether to operate other heat pump devices excluding the predetermined heat pump device among the plurality of heat pump devices, according to the operating frequency acquired by the frequency acquisition unit. Features.

この発明に係る台数制御装置は、あるヒートポンプ装置が備える圧縮機の運転周波数に応じて運転台数の制御を行う。そのため、ヒートポンプ装置の空調負荷を把握することなく、効率的にヒートポンプ装置の運転台数を制御することができる。   The number control device according to the present invention controls the number of operating units according to the operating frequency of a compressor provided in a certain heat pump device. Therefore, the number of operating heat pump devices can be efficiently controlled without grasping the air conditioning load of the heat pump device.

流体供給システム２００の基本構成図。1 is a basic configuration diagram of a fluid supply system 200. FIG. 実施の形態１に係る流体供給システム２００の構成図。1 is a configuration diagram of a fluid supply system 200 according to Embodiment 1. FIG. 運転コントローラ１００の機能を示す機能ブロック図。The functional block diagram which shows the function of the driving | operation controller 100. FIG. 台数制御における熱源機の運転効率の効果を示す概念図。The conceptual diagram which shows the effect of the operation efficiency of the heat source machine in number control. 台数制御部１２２による台数制御処理の流れを示すフローチャート。6 is a flowchart showing a flow of a unit number control process by a number control unit 122;

実施の形態１．
図１は、流体供給システム２００の基本構成図である。
流体供給システム２００は、ヒートポンプ装置１０、補助熱源２０、室内空間６０に設置された放熱器３０（流体利用装置の一例）、ポンプ４０を備え、順次流体配管５０によって接続されている。特に、流体配管５０は、ヒートポンプ装置１０が備える第１熱交換器２に接続されている。また、流体配管５０の内部には、水（流体の一例）が流れている。
また、放熱器３０が設置された室内空間６０には、設定温度等を入力するためのリモートコントローラ７０が設けられている。 Embodiment 1 FIG.
FIG. 1 is a basic configuration diagram of a fluid supply system 200.
The fluid supply system 200 includes a heat pump device 10, an auxiliary heat source 20, a radiator 30 (an example of a fluid utilization device) installed in an indoor space 60, and a pump 40, which are sequentially connected by a fluid pipe 50. In particular, the fluid pipe 50 is connected to the first heat exchanger 2 included in the heat pump device 10. Further, water (an example of a fluid) flows inside the fluid pipe 50.
In addition, a remote controller 70 for inputting a set temperature or the like is provided in the indoor space 60 where the radiator 30 is installed.

ヒートポンプ装置１０は、圧縮機１と第１熱交換器２と膨張機構３と第２熱交換器４とが冷媒配管５により順次接続されたヒートポンプサイクルを有する。圧縮機１、第１熱交換器２、膨張機構３、第２熱交換器４の順にヒートポンプサイクル内を冷媒が循環することにより、冷媒は、第２熱交換器４で空気等から吸熱して、第１熱交換器２で流体配管５０を流れる水へ放熱する。つまり、ヒートポンプ装置１０により、流体配管５０を流れる水が加熱され、温水になる。
補助熱源２０は、ヒートポンプ装置１０が加熱した温水を、さらに加熱する。例えば、補助熱源２０は、電気ヒータ等である。
放熱器３０は、ヒートポンプ装置１０や補助熱源２０により加熱された温水の熱を、室内空間６０の空気へ放出する。その結果、室内空間６０内部は暖かくなり、温水は冷却され冷水になる。例えば、放熱器３０は、輻射熱による自然対流の熱交換により温水と空気とを熱交換させる床暖房パネルやラジエータ、内部ファンによる強制対流の熱交換により温水と空気とを熱交換させるファンコイルユニット等である。
ポンプ４０は、流体配管５０内を水を循環させる。つまり、ポンプ４０が稼動することにより、ヒートポンプ装置１０、補助熱源２０、放熱器３０の順に水が循環する。そして、上述したように、水は、ヒートポンプ装置１０で加熱され、補助熱源２０でさらに加熱され、放熱器３０で冷却されることを繰り返す。これにより、室内空間６０が暖められる。 The heat pump device 10 has a heat pump cycle in which a compressor 1, a first heat exchanger 2, an expansion mechanism 3, and a second heat exchanger 4 are sequentially connected by a refrigerant pipe 5. As the refrigerant circulates in the heat pump cycle in the order of the compressor 1, the first heat exchanger 2, the expansion mechanism 3, and the second heat exchanger 4, the refrigerant absorbs heat from the air or the like in the second heat exchanger 4. The first heat exchanger 2 radiates heat to the water flowing through the fluid pipe 50. That is, the water flowing through the fluid pipe 50 is heated by the heat pump device 10 to become hot water.
The auxiliary heat source 20 further heats the hot water heated by the heat pump device 10. For example, the auxiliary heat source 20 is an electric heater or the like.
The radiator 30 releases the heat of hot water heated by the heat pump device 10 and the auxiliary heat source 20 to the air in the indoor space 60. As a result, the interior of the indoor space 60 becomes warm, and the hot water is cooled and becomes cold water. For example, the radiator 30 is a floor heating panel or radiator that exchanges heat between hot water and air by natural convection heat exchange by radiant heat, a fan coil unit that exchanges heat between hot water and air by forced convection heat exchange by an internal fan, etc. It is.
The pump 40 circulates water through the fluid piping 50. That is, when the pump 40 is operated, water circulates in the order of the heat pump device 10, the auxiliary heat source 20, and the radiator 30. As described above, the water is repeatedly heated by the heat pump device 10, further heated by the auxiliary heat source 20, and cooled by the radiator 30. Thereby, the indoor space 60 is warmed.

図２は、実施の形態１に係る流体供給システム２００の構成図である。
図２に示す流体供給システム２００は、３台のヒートポンプ装置１０ａ，１０ｂ，１０ｃを備える。各ヒートポンプ装置１０は、流体配管５０によって並列に接続されている。
つまり、ポンプ４０から流出した水は、第１分岐点８０と第２分岐点８１とで分岐して、ヒートポンプ装置１０ａ，１０ｂ，１０ｃそれぞれへ流れる。そして、ヒートポンプ装置１０ａ，１０ｂ，１０ｃそれぞれで加熱された温水は、第１合流点８２と第２合流点８３とで合流し、補助熱源２０でさらに加熱されて放熱器３０へ供給される。そして、放熱器３０で冷却された水がポンプ４０を通り、再びヒートポンプ装置１０ａ，１０ｂ，１０ｃへ流れる。 FIG. 2 is a configuration diagram of the fluid supply system 200 according to the first embodiment.
A fluid supply system 200 shown in FIG. 2 includes three heat pump devices 10a, 10b, and 10c. Each heat pump device 10 is connected in parallel by a fluid pipe 50.
That is, the water that flows out of the pump 40 branches at the first branch point 80 and the second branch point 81 and flows to the heat pump devices 10a, 10b, and 10c, respectively. The hot water heated by each of the heat pump devices 10a, 10b, and 10c is merged at the first merge point 82 and the second merge point 83, further heated by the auxiliary heat source 20, and supplied to the radiator 30. And the water cooled with the heat radiator 30 passes the pump 40, and flows into heat pump apparatus 10a, 10b, 10c again.

また、図２に示す流体供給システム２００は、運転コントローラ１００（台数制御装置）を備える。運転コントローラ１００は、ヒートポンプ装置１０ａ，１０ｂ，１０ｃ、補助熱源２０、ポンプ４０の運転制御を行う。
運転コントローラ１００とヒートポンプ装置１０ａとはネットワーク９０により直接接続されている。また、運転コントローラ１００とヒートポンプ装置１０ｂ，１０ｃとは中継器１０１ａ，１０１ｂを介して、ネットワーク９０により接続されている。ここでは、ヒートポンプ装置１０ａを親ヒートポンプ装置と呼び、ヒートポンプ装置１０ｂ，１０ｃを子ヒートポンプ装置と呼ぶ。 The fluid supply system 200 shown in FIG. 2 includes an operation controller 100 (number control device). The operation controller 100 performs operation control of the heat pump devices 10a, 10b, and 10c, the auxiliary heat source 20, and the pump 40.
The operation controller 100 and the heat pump device 10a are directly connected by a network 90. The operation controller 100 and the heat pump devices 10b and 10c are connected by a network 90 via relays 101a and 101b. Here, the heat pump device 10a is called a parent heat pump device, and the heat pump devices 10b and 10c are called child heat pump devices.

図３は、運転コントローラ１００の機能を示す機能ブロック図である。
運転コントローラ１００は、データ収集部１１０、運転制御部１２０、データ記憶部１３０を備える。 FIG. 3 is a functional block diagram showing functions of the operation controller 100.
The operation controller 100 includes a data collection unit 110, an operation control unit 120, and a data storage unit 130.

データ収集部１１０は、周波数取得部１１１、実測温度検出部１１２、目標温度取得部１１３、運転情報取得部１１４を備える。
周波数取得部１１１は、親ヒートポンプ装置（ヒートポンプ装置１０ａ）の圧縮機１ａに設置された周波数検出器６ａが検出した運転周波数をネットワーク９０を介して受信することにより、親ヒートポンプ装置の圧縮機１ａの運転周波数を取得する。
実測温度検出部１１２は、流体配管５０における補助熱源２０と放熱器３０との間に設けられた温度センサ１０２によって検出された水の温度を実測温度として取得する。つまり、実測温度検出部１１２は、放熱器３０へ供給される水の温度を実測温度として取得する。なお、温度センサ１０２は、例えば、温度サーミスタである。
目標温度取得部１１３は、リモートコントローラ７０により入力された目標温度を、リモートコントローラ７０からネットワーク９０を介して受信することにより取得する。目標温度とは、放熱器３０へ供給する水の目標温度である。
運転情報取得部１１４は、リモートコントローラ７０により入力された流体供給システム２００のＯＮ／ＯＦＦ情報をリモートコントローラ７０からネットワーク９０を介して受信することにより取得する。 The data collection unit 110 includes a frequency acquisition unit 111, an actually measured temperature detection unit 112, a target temperature acquisition unit 113, and an operation information acquisition unit 114.
The frequency acquisition unit 111 receives the operating frequency detected by the frequency detector 6a installed in the compressor 1a of the parent heat pump device (heat pump device 10a) via the network 90, so that the compressor 1a of the parent heat pump device Get the operating frequency.
The actually measured temperature detection unit 112 acquires the temperature of water detected by the temperature sensor 102 provided between the auxiliary heat source 20 and the radiator 30 in the fluid pipe 50 as the actually measured temperature. That is, the measured temperature detection unit 112 acquires the temperature of the water supplied to the radiator 30 as the measured temperature. The temperature sensor 102 is, for example, a temperature thermistor.
The target temperature acquisition unit 113 acquires the target temperature input by the remote controller 70 by receiving it from the remote controller 70 via the network 90. The target temperature is a target temperature of water supplied to the radiator 30.
The operation information acquisition unit 114 acquires ON / OFF information of the fluid supply system 200 input by the remote controller 70 by receiving it from the remote controller 70 via the network 90.

運転制御部１２０は、空調制御部１２１、台数制御部１２２を備える。
空調制御部１２１は、流体供給システム２００のＯＮ／ＯＦＦ情報に応じて、ポンプ４０のＯＮ／ＯＦＦ制御を行う。また、空調制御部１２１は、全てのヒートポンプ装置１０が運転中である場合に、目標温度と実測温度との温度差に応じて、補助熱源２０のＯＮ／ＯＦＦ制御を行う。つまり、空調制御部１２１は、全てのヒートポンプ装置１０が運転中であり、目標温度と実測温度との温度差が大きい場合に、補助熱源２０の運転を開始させ、目標温度と実測温度との温度差が小さくなると、補助熱源２０の運転を中止する。なお、空調制御部１２１は、補助熱源２０のＯＮ／ＯＦＦ制御を行う場合には、空調制御部１２１は、ヒートポンプ装置１０ａ，１０ｂ，１０ｃの起動してからの時間を加味する。例えば、ヒートポンプ装置１０ｃを起動したばかりである場合には、ヒートポンプ装置１０ｃが十分に機能していない可能性があるため、目標温度と実測温度との温度差がある場合であっても補助熱源２０の運転を開始することを控える。さらに、空調制御部１２１は、目標温度と実測温度とをネットワークを介してヒートポンプ装置１０ａ，１０ｂ，１０ｃへ送信して、ヒートポンプ装置１０ａ，１０ｂ，１０ｃに自身の能力（運転周波数）を決定させる。なお、ヒートポンプ装置１０ａ，１０ｂ，１０ｃは、目標温度と実測温度との温度差が大きい場合、運転周波数を高くし、温度差が小さい場合、運転周波数を低くする。
台数制御部１２２は、補助熱源２０の運転が停止されている場合に、親ヒートポンプ装置の圧縮機１の運転周波数と、目標温度と実測温度との温度差とに応じて、子ヒートポンプ装置（ヒートポンプ装置１０ｂ，１０ｃ）のＯＮ／ＯＦＦ制御を行う。 The operation control unit 120 includes an air conditioning control unit 121 and a number control unit 122.
The air conditioning control unit 121 performs ON / OFF control of the pump 40 according to the ON / OFF information of the fluid supply system 200. Moreover, the air-conditioning control part 121 performs ON / OFF control of the auxiliary heat source 20 according to the temperature difference between the target temperature and the actually measured temperature when all the heat pump devices 10 are in operation. That is, the air conditioning control unit 121 starts the operation of the auxiliary heat source 20 when all the heat pump devices 10 are in operation and the temperature difference between the target temperature and the measured temperature is large, and the temperature between the target temperature and the measured temperature is reached. When the difference becomes smaller, the operation of the auxiliary heat source 20 is stopped. In addition, when the air-conditioning control part 121 performs ON / OFF control of the auxiliary heat source 20, the air-conditioning control part 121 considers the time after starting of the heat pump apparatus 10a, 10b, 10c. For example, if the heat pump device 10c has just been started, the heat pump device 10c may not function sufficiently, so even if there is a temperature difference between the target temperature and the measured temperature, the auxiliary heat source 20 Refrain from starting driving. Further, the air conditioning control unit 121 transmits the target temperature and the actually measured temperature to the heat pump apparatuses 10a, 10b, and 10c via the network, and causes the heat pump apparatuses 10a, 10b, and 10c to determine their own capabilities (operation frequencies). The heat pump devices 10a, 10b, and 10c increase the operating frequency when the temperature difference between the target temperature and the measured temperature is large, and decrease the operating frequency when the temperature difference is small.
When the operation of the auxiliary heat source 20 is stopped, the number control unit 122 determines the child heat pump device (heat pump) according to the operating frequency of the compressor 1 of the parent heat pump device and the temperature difference between the target temperature and the measured temperature. ON / OFF control of the devices 10b and 10c) is performed.

データ記憶部１３０は、ヒートポンプ装置１０ａ，１０ｂ，１０ｃそれぞれの運転状況（運転しているか停止しているか）等、運転制御部１２０が運転制御を行うのに必要な情報を記憶装置に記憶する。   The data storage unit 130 stores, in the storage device, information necessary for the operation control unit 120 to perform operation control, such as the operation status (operating or stopped) of each of the heat pump apparatuses 10a, 10b, and 10c.

図４は、台数制御における熱源機の運転効率の効果を示す概念図である。
ヒートポンプ装置は、一般に、定格周波数付近の周波数で運転する場合の効率がよく、定格周波数から離れた周波数で運転する場合の効率は悪い。例えば、熱源機周波数制御が３０Ｈｚから１００Ｈｚの範囲で実施されている場合、３０Ｈｚ付近（低周波数領域）の周波数で運転する場合の効率が最も悪く、定格周波数に近い５０Ｈｚから７０Ｈｚ付近（定格周波数領域）の周波数で運転する場合の効率が最もよい。
そのため、図４に示すように、３台のヒートポンプ装置１０ａ，１０ｂ，１０ｃを、能力を落として低周波数領域の周波数で運転するよりも、２台のヒートポンプ装置１０ａ，１０ｂを、能力を高くして定格周波数領域の周波数で運転する方が効率がよい。 FIG. 4 is a conceptual diagram showing the effect of the operation efficiency of the heat source machine in the number control.
In general, the heat pump device has high efficiency when operated at a frequency near the rated frequency, and poor efficiency when operated at a frequency away from the rated frequency. For example, when the heat source frequency control is performed in the range of 30 Hz to 100 Hz, the efficiency when operating at a frequency near 30 Hz (low frequency range) is the worst, and 50 Hz to 70 Hz close to the rated frequency (rated frequency range) ) The best efficiency when operating at a frequency of
Therefore, as shown in FIG. 4, the capacity of the two heat pump devices 10 a, 10 b is increased rather than operating the three heat pump devices 10 a, 10 b, 10 c at a low frequency range with a reduced capacity. It is more efficient to operate at a frequency in the rated frequency range.

ここで、目標温度と実測温度との温度差が小さく、親ヒートポンプ装置の圧縮機１の運転周波数が低周波数領域にある場合、ヒートポンプ装置１０の能力は空調負荷を満足し、かつヒートポンプ装置１０は低効率な運転していると判断できる。そこで、台数制御部１２２は、目標温度と実測温度との温度差が小さく、親ヒートポンプ装置の圧縮機１の運転周波数が低周波数領域にある場合、子ヒートポンプ装置を１台（図４ではヒートポンプ装置１０ｃ）停止させる。
すると、ヒートポンプ装置１０の台数が減ったことにより、一時的に能力不足となり、目標温度と実測温度との温度差が大きくなる。ヒートポンプ装置１０は、上述したように、目標温度と実測温度との温度差に応じて運転周波数を決定している。そのため、運転中のヒートポンプ装置１０（図４では、ヒートポンプ装置１０ａ，１０ｂ）は、目標温度と実測温度との温度差が大きくなると、運転周波数を高くする。その結果、運転周波数が定格周波数に近づき、ヒートポンプ装置１０の効率がよくなる。 Here, when the temperature difference between the target temperature and the measured temperature is small and the operation frequency of the compressor 1 of the parent heat pump device is in the low frequency region, the capability of the heat pump device 10 satisfies the air conditioning load, and the heat pump device 10 It can be judged that the vehicle is operating at low efficiency. Therefore, when the temperature difference between the target temperature and the actually measured temperature is small and the operating frequency of the compressor 1 of the parent heat pump device is in the low frequency region, the number control unit 122 has one child heat pump device (in FIG. 4, the heat pump device). 10c) Stop.
Then, since the number of heat pump devices 10 is reduced, the capacity is temporarily insufficient, and the temperature difference between the target temperature and the actually measured temperature increases. As described above, the heat pump device 10 determines the operating frequency according to the temperature difference between the target temperature and the actually measured temperature. Therefore, the operating heat pump device 10 (heat pump devices 10a and 10b in FIG. 4) increases the operating frequency when the temperature difference between the target temperature and the actually measured temperature increases. As a result, the operating frequency approaches the rated frequency, and the efficiency of the heat pump device 10 is improved.

図５は、台数制御部１２２による台数制御処理の流れを示すフローチャートである。なお、前提として、補助熱源２０の運転は停止されているものとする。
（Ｓ１）では、台数制御部１２２は、親ヒートポンプ装置であるヒートポンプ装置１０ａの効率が低下しているか否かを判定する。具体的には、台数制御部１２２は、ヒートポンプ装置１０ａの圧縮機１ａの運転周波数が予め定められた第１の周波数以下で、かつ、目標温度と実測温度との温度差が予め定められた第１の温度以下（温度差小）であるか否かを判定する。この条件を満たす場合には、（Ｓ２）へ進み、この条件を満たさない場合には（Ｓ３）へ進む。
（Ｓ２）では、台数制御部１２２は、ヒートポンプ装置１０ａの効率が低下しているため、現在運転中の子ヒートポンプ装置のうちの１台の運転を停止（ＯＦＦ）する。 FIG. 5 is a flowchart showing the flow of the number control process by the number control unit 122. As a premise, it is assumed that the operation of the auxiliary heat source 20 is stopped.
In (S1), the number control unit 122 determines whether or not the efficiency of the heat pump device 10a that is the parent heat pump device is reduced. Specifically, the number control unit 122 is a first controller in which the operating frequency of the compressor 1a of the heat pump apparatus 10a is equal to or lower than a predetermined first frequency, and the temperature difference between the target temperature and the measured temperature is predetermined. It is determined whether or not the temperature is 1 or less (small temperature difference). If this condition is satisfied, the process proceeds to (S2), and if this condition is not satisfied, the process proceeds to (S3).
In (S2), since the efficiency of the heat pump device 10a is reduced, the number control unit 122 stops (OFF) the operation of one of the child heat pump devices currently in operation.

（Ｓ３）では、台数制御部１２２は、空調能力が不足しているか否かを判定する。具体的には、台数制御部１２２は、ヒートポンプ装置１０ａの圧縮機１ａの運転周波数が第１の周波数よりも高い予め定められた第２の周波数以上で、かつ、目標温度と実測温度との温度差が第１の温度よりも大きい予め定められた第２の温度以上（温度差大）であるか否かを判定する。この条件を満たす場合には、（Ｓ４）へ進み、この条件を満たさない場合には（Ｓ５）へ進む。なお、第２の周波数は、例えば、圧縮機１ａの最大運転周波数であってもよい。
（Ｓ４）では、台数制御部１２２は、空調能力が不足しているため、現在運転を停止している子ヒートポンプ装置のうちの１台の運転を開始（ＯＮ）する。
（Ｓ５）では、台数制御部１２２は、ヒートポンプ装置１０ａの効率が低下していることや、空調能力が不足していることがないため、現状維持とする。つまり、台数制御部１２２は、子ヒートポンプ装置のＯＮ／ＯＦＦ制御を行わない。 In (S3), the number control unit 122 determines whether the air conditioning capability is insufficient. Specifically, the number control unit 122 has a predetermined frequency equal to or higher than a predetermined second frequency where the operating frequency of the compressor 1a of the heat pump device 10a is higher than the first frequency, and a temperature between the target temperature and the actually measured temperature. It is determined whether or not the difference is greater than or equal to a predetermined second temperature greater than the first temperature (large temperature difference). If this condition is satisfied, the process proceeds to (S4), and if this condition is not satisfied, the process proceeds to (S5). The second frequency may be the maximum operating frequency of the compressor 1a, for example.
In (S4), since the air conditioning capability is insufficient, the number control unit 122 starts (ON) one of the child heat pump devices that are currently stopped.
In (S5), the number control unit 122 maintains the current state because the efficiency of the heat pump device 10a is not reduced and the air conditioning capability is not insufficient. That is, the number control unit 122 does not perform ON / OFF control of the child heat pump device.

（Ｓ６）では、台数制御部１２２は、（Ｓ２）や（Ｓ４）で台数制御を行った場合には、所定の時間待ちに入り、所定の時間台数制御を行わない。これは、ヒートポンプ装置１０の運転開始や停止をしたことが水温の変化に反映される時間遅れを考慮するためである。また、ヒートポンプ装置１０のＯＮ／ＯＦＦの切り替えが短時間のうちに繰り返されるハンチング動作を防止するためである。なお、（Ｓ２）で運転台数を減少させた場合と、（Ｓ４）で運転台数を増加させた場合とでは、台数制御の結果が水温の変化に反映されるまでの時間等が異なる場合がある。この場合には、（Ｓ２）で運転台数を減少させた場合（つまり、（Ｓ２）から（Ｓ６）へ遷移した場合）と、（Ｓ４）で運転台数を増加させた場合（つまり、（Ｓ４）から（Ｓ６）へ遷移した場合）とで待ち時間を異なる時間としてもよい。
台数制御部１２２は、所定の時間経過後、再び（Ｓ１）から処理を行う。 In (S6), when the number control unit 122 performs the number control in (S2) or (S4), the number control unit 122 waits for a predetermined time and does not perform the number control for a predetermined time. This is to take into account the time delay that the start or stop of the operation of the heat pump device 10 is reflected in the change in the water temperature. Moreover, it is for preventing the hunting operation | movement where switching of ON / OFF of the heat pump apparatus 10 is repeated within a short time. In addition, when the number of operating units is decreased in (S2) and when the number of operating units is increased in (S4), the time until the result of unit control is reflected in the change in water temperature may be different. . In this case, when the number of operating units is decreased in (S2) (that is, when transitioning from (S2) to (S6)) and when the number of operating units is increased in (S4) (that is, (S4) The waiting time may be a different time in the case of transition from (S6) to (S6).
The number control unit 122 performs the processing from (S1) again after a predetermined time has elapsed.

なお、子ヒートポンプ装置が運転中である場合には、空調制御部１２１により補助熱源２０のＯＮ／ＯＦＦ制御が行われる。つまり、目標温度と実測温度との温度差が所定の温度以上である場合には、空調制御部１２１により補助熱源２０の運転が開始される。目標温度と実測温度との温度差が所定の温度より小さい場合には、空調制御部１２１により補助熱源２０の運転が停止される。   In addition, when the child heat pump device is in operation, the air conditioning control unit 121 performs ON / OFF control of the auxiliary heat source 20. That is, when the temperature difference between the target temperature and the actually measured temperature is equal to or higher than a predetermined temperature, the operation of the auxiliary heat source 20 is started by the air conditioning control unit 121. When the temperature difference between the target temperature and the actually measured temperature is smaller than the predetermined temperature, the air conditioning control unit 121 stops the operation of the auxiliary heat source 20.

また、（Ｓ１）で、ヒートポンプ装置１０ａの運転周波数が第１の周波数よりも低い第３の周波数以下であると判定された場合、（Ｓ２）で、台数制御部１２２は現在運転中の２台の子ヒートポンプ装置の運転を停止してもよい。
同様に、（Ｓ３）で、目標温度と実測温度との温度差が第２の温度よりも大きい第３の温度以上であると判定された場合、（Ｓ４）で、台数制御部１２２は現在運転中の２台の子ヒートポンプ装置の運転を開始してもよい。
つまり、台数制御部１２２は、親ヒートポンプ装置の圧縮機１の運転周波数と、目標温度と実測温度との温度差とに応じて、一度に複数の子ヒートポンプ装置のＯＮ／ＯＦＦ制御を行ってもよい。すなわち、台数制御部１２２は、親ヒートポンプ装置の圧縮機１の運転周波数と、目標温度と実測温度との温度差とに応じて、ヒートポンプ装置１０の運転台数を制御する。 When it is determined in (S1) that the operation frequency of the heat pump device 10a is equal to or lower than the third frequency lower than the first frequency, the number control unit 122 is set to two units currently in operation in (S2). The operation of the child heat pump device may be stopped.
Similarly, when it is determined in (S3) that the temperature difference between the target temperature and the actually measured temperature is equal to or higher than a third temperature that is greater than the second temperature, the number control unit 122 performs the current operation in (S4). The operation of the two child heat pump devices may be started.
That is, the number control unit 122 may perform ON / OFF control of a plurality of child heat pump devices at a time according to the operating frequency of the compressor 1 of the parent heat pump device and the temperature difference between the target temperature and the actually measured temperature. Good. In other words, the number control unit 122 controls the number of operating heat pump devices 10 according to the operating frequency of the compressor 1 of the parent heat pump device and the temperature difference between the target temperature and the measured temperature.

以上のように、実施の形態１に係る運転コントローラ１００は、ヒートポンプ装置１０の能力を把握することなく、ヒートポンプ装置１０の運転台数の制御をすることができ、運転効率が向上する。
ここで、ヒートポンプ装置１０ａ，１０ｂ，１０ｃは、据付業者により選定され据え付られる場合には、それぞれの能力が同じ能力（例えば、５ｋＷ，５ｋＷ，５ｋＷ）の場合だけでなく、それぞれの能力が異なる能力（例えば、５ｋＷ，３ｋＷ，７ｋＷ）の場合もある。しかし、実施の形態１に係る運転コントローラ１００であれば、いずれの場合であっても、的確な運転台数の制御を行うことができ、運転効率が向上する。 As described above, the operation controller 100 according to Embodiment 1 can control the number of operating heat pump devices 10 without grasping the capability of the heat pump device 10, thereby improving the operation efficiency.
Here, when the heat pump apparatuses 10a, 10b, and 10c are selected and installed by an installation contractor, the respective capacities are not only the same (for example, 5 kW, 5 kW, and 5 kW), but also have different capacities. There is also a case of capacity (for example, 5 kW, 3 kW, 7 kW). However, if the operation controller 100 according to the first embodiment is used, in any case, it is possible to accurately control the number of operation, and the operation efficiency is improved.

なお、上記説明では、３台のヒートポンプ装置１０を備える流体供給システム２００を例として説明した。しかし、ヒートポンプ装置１０は、２台であっても、４台以上であってもよい。
また、上記説明では、放熱器３０を流体供給装置の一例として説明した。しかし、放熱器３０に代えて、流体供給装置として給湯機等を用いてもよい。
また、放熱器３０に代えて、流体供給装置として吸熱機や冷水供給機を用いてもよい。この場合、ヒートポンプ装置１０は、冷媒を、圧縮機１、第２熱交換器４、膨張機構３、第１熱交換器２の順にヒートポンプサイクル内を循環させる。これにより、冷媒は、第１熱交換器２で流体配管５０を流れる水から吸熱して、第２熱交換器４で空気等へ放熱する。つまり、ヒートポンプ装置１０により、流体配管５０を流れる水が冷却され、冷水になる。この冷水を吸熱機や冷水供給機へ供給することにより、冷房や冷水の供給を行ってもよい。
また、上記説明では、流体配管５０の内部を水が流れているとしたが、水以外の流体が流れているとしてもよい。
また、上記説明では、流体供給システム２００は、放熱器３０を１台のみ備える構成としたが、複数台の放熱器３０を備える構成としてもよい。 In the above description, the fluid supply system 200 including the three heat pump devices 10 has been described as an example. However, the number of heat pump devices 10 may be two, or four or more.
In the above description, the radiator 30 is described as an example of the fluid supply device. However, instead of the radiator 30, a water heater or the like may be used as the fluid supply device.
Further, instead of the radiator 30, a heat absorber or a cold water feeder may be used as the fluid supply device. In this case, the heat pump device 10 circulates the refrigerant in the heat pump cycle in the order of the compressor 1, the second heat exchanger 4, the expansion mechanism 3, and the first heat exchanger 2. Thereby, the refrigerant absorbs heat from the water flowing through the fluid pipe 50 in the first heat exchanger 2 and dissipates heat to the air or the like in the second heat exchanger 4. That is, the water flowing through the fluid pipe 50 is cooled by the heat pump device 10 and becomes cold water. By supplying this cold water to an endothermic machine or a cold water supply machine, cooling or cold water may be supplied.
In the above description, water flows through the fluid pipe 50, but fluid other than water may flow.
In the above description, the fluid supply system 200 is configured to include only one radiator 30, but may be configured to include a plurality of radiators 30.

１ 圧縮機、２ 第１熱交換器、３ 膨張機構、４ 第２熱交換器、５ 冷媒配管、６ａ 周波数検出器、１０ ヒートポンプ装置、２０ 補助熱源、３０ 放熱器、４０ ポンプ、５０ 流体配管、６０ 室内空間、７０ リモートコントローラ、７１ 入力部、７２ 表示部、８０ 第１分岐点、８１ 第２分岐点、８２ 第１合流点、８３ 第２合流点、９０ ネットワーク、１００ 運転コントローラ、１０１ 中継器、１０２ 温度センサ、１１０ データ収集部、１１１ 周波数取得部、１１２ 実測温度検出部、１１３ 目標温度取得部、１１４ 運転情報取得部、１２０ 運転制御部、１２１ 空調制御部、１２２ 台数制御部、１３０ データ記憶部、１４０ データ記憶部、２００ 流体供給システム。   DESCRIPTION OF SYMBOLS 1 Compressor, 2 1st heat exchanger, 3 Expansion mechanism, 4 2nd heat exchanger, 5 Refrigerant piping, 6a Frequency detector, 10 Heat pump apparatus, 20 Auxiliary heat source, 30 Radiator, 40 Pump, 50 Fluid piping, 60 indoor space, 70 remote controller, 71 input unit, 72 display unit, 80 1st branch point, 81 2nd branch point, 82 1st junction point, 83 2nd junction point, 90 network, 100 operation controller, 101 relay , 102 Temperature sensor, 110 Data collection unit, 111 Frequency acquisition unit, 112 Actual temperature detection unit, 113 Target temperature acquisition unit, 114 Operation information acquisition unit, 120 Operation control unit, 121 Air conditioning control unit, 122 Number control unit, 130 Data Storage unit, 140 Data storage unit, 200 Fluid supply system.

Claims (9)

圧縮機を有する複数台のヒートポンプ装置を備え、前記ヒートポンプ装置で加熱又は冷却した流体を流体利用装置へ供給する流体供給システムにおいて、前記複数台のヒートポンプ装置の運転台数を制御をする台数制御装置であり、
前記複数台のヒートポンプ装置のうちの所定のヒートポンプ装置が備える前記圧縮機の運転周波数を取得する周波数取得部と、
前記周波数取得部が取得した運転周波数に応じて、前記複数台のヒートポンプ装置のうちの前記所定のヒートポンプ装置を除く他のヒートポンプ装置を運転させるか否かを決定する台数制御部と
を備えることを特徴とする台数制御装置。 In a fluid supply system comprising a plurality of heat pump devices having compressors and supplying fluid heated or cooled by the heat pump device to a fluid utilization device, a unit control device for controlling the number of operating the plurality of heat pump devices. Yes,
A frequency acquisition unit that acquires an operating frequency of the compressor included in a predetermined heat pump device of the plurality of heat pump devices;
A unit control unit for determining whether to operate other heat pump devices excluding the predetermined heat pump device among the plurality of heat pump devices, according to the operating frequency acquired by the frequency acquisition unit. Feature number control device. 前記台数制御部は、前記運転周波数が予め決められた第１の周波数以下である場合、前記他のヒートポンプ装置のうち、運転しているヒートポンプ装置の少なくとも１台のヒートポンプ装置の運転を停止させる
ことを特徴とする請求項１に記載の台数制御装置。 When the operation frequency is equal to or lower than a predetermined first frequency, the number control unit stops the operation of at least one heat pump device that is operating among the other heat pump devices. The number control device according to claim 1. 前記台数制御部は、前記運転周波数が予め決められた第２の周波数以上である場合、前記他のヒートポンプ装置のうち、運転を停止しているヒートポンプ装置の少なくとも１台のヒートポンプ装置の運転を開始させる
ことを特徴とする請求項１又は２に記載の台数制御装置。 When the operation frequency is equal to or higher than a predetermined second frequency, the number control unit starts operation of at least one heat pump device of the heat pump device that has stopped operating among the other heat pump devices. The number control device according to claim 1, wherein the number control device is a control unit. 前記台数制御装置は、さらに、
前記流体利用装置へ供給する流体の目標温度を取得する目標温度取得部と、
前記流体利用装置へ供給される流体の温度を実測温度として検出する実測温度検出部とを備え、
前記台数制御部は、前記目標温度取得部が取得した目標温度と前記実測温度検出部が検出した実測温度との温度差と、前記運転周波数とに応じて、前記他のヒートポンプ装置を運転させるか否かを決定する
ことを特徴とする請求項１から３までのいずれかに記載の台数制御装置。 The number control device further includes:
A target temperature acquisition unit for acquiring a target temperature of a fluid to be supplied to the fluid utilization device;
An actual temperature detector that detects the temperature of the fluid supplied to the fluid utilization device as an actual temperature;
Whether the number control unit operates the other heat pump device according to the temperature difference between the target temperature acquired by the target temperature acquisition unit and the actual temperature detected by the actual temperature detection unit, and the operation frequency. The number control device according to claim 1, wherein it is determined whether or not. 前記台数制御部は、前記温度差が予め決められた第１の温度以下であって、かつ前記運転周波数が予め決められた第１の周波数以下である場合、前記他のヒートポンプ装置のうち、運転しているヒートポンプ装置の少なくとも１台のヒートポンプ装置の運転を停止させる
ことを特徴とする請求項４に記載の台数制御装置。 When the temperature difference is equal to or lower than a predetermined first temperature and the operating frequency is equal to or lower than a predetermined first frequency, the number control unit operates among the other heat pump devices. The number control device according to claim 4, wherein the operation of at least one heat pump device of the heat pump device is stopped. 前記台数制御部は、前記温度差が予め決められた第２の温度以上であって、かつ前記運転周波数が予め決められた第２の周波数以上である場合、前記他のヒートポンプ装置のうち、運転を停止しているヒートポンプ装置の少なくとも１台のヒートポンプ装置の運転を開始させる
ことを特徴とする請求項４又は５に記載の台数制御装置。 When the temperature difference is equal to or higher than a predetermined second temperature and the operating frequency is equal to or higher than a predetermined second frequency, the number control unit operates among the other heat pump devices. 6. The number control device according to claim 4, wherein the operation of at least one heat pump device of the heat pump devices that are stopped is started. 前記台数制御部は、前記他のヒートポンプ装置の運転を停止又は開始した後、所定の時間は、前記他のヒートポンプ装置の運転を停止又は開始を行わない
ことを特徴とする請求項１から６までのいずれかに記載の台数制御装置。 The number control unit does not stop or start the operation of the other heat pump device for a predetermined time after stopping or starting the operation of the other heat pump device. The number control device according to any one of the above. 圧縮機を有する複数台のヒートポンプ装置を備え、前記ヒートポンプ装置で加熱又は冷却した流体を流体利用装置へ供給する流体供給システムにおいて、前記複数台のヒートポンプ装置の運転台数を制御をする台数制御方法であり、
前記複数台のヒートポンプ装置のうちの所定のヒートポンプ装置が備える前記圧縮機の運転周波数を受信する周波数受信工程と、
前記周波数受信工程で取得した運転周波数に応じて、前記複数台のヒートポンプ装置のうちの前記所定のヒートポンプ装置を除く他のヒートポンプ装置を運転させるか否かを決定する台数制御工程と
を備えることを特徴とする台数制御方法。 In a fluid supply system comprising a plurality of heat pump devices having compressors and supplying fluid heated or cooled by the heat pump device to a fluid utilization device, a unit control method for controlling the number of operating the plurality of heat pump devices. Yes,
A frequency receiving step of receiving an operating frequency of the compressor included in a predetermined heat pump device of the plurality of heat pump devices;
A number control step of determining whether to operate other heat pump devices except the predetermined heat pump device among the plurality of heat pump devices, according to the operating frequency acquired in the frequency receiving step. Characteristic unit control method. 圧縮機を備える複数台のヒートポンプ装置と、
前記複数台のヒートポンプ装置の運転台数を制御をする台数制御装置とを備え、
前記ヒートポンプ装置で加熱又は冷却した流体を流体利用装置へ供給する流体供給システムであり、
前記台数制御装置は、
前記複数台のヒートポンプ装置のうちの所定のヒートポンプ装置が備える前記圧縮機の運転周波数を取得する周波数取得部と、
前記周波数取得部が取得した運転周波数に応じて、前記複数台のヒートポンプ装置のうちの前記所定のヒートポンプ装置を除く他のヒートポンプ装置を運転させるか否かを決定する台数制御部と
を備えることを特徴とする流体供給システム。 A plurality of heat pump devices including compressors;
A number control device that controls the number of operating heat pump devices.
A fluid supply system for supplying fluid heated or cooled by the heat pump device to a fluid utilization device;
The number controller is
A frequency acquisition unit that acquires an operating frequency of the compressor included in a predetermined heat pump device of the plurality of heat pump devices;
A unit control unit for determining whether to operate other heat pump devices excluding the predetermined heat pump device among the plurality of heat pump devices, according to the operating frequency acquired by the frequency acquisition unit. A fluid supply system.
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