WO2021200176A1 - Équipement de chauffage et de refroidissement ergonomique - Google Patents

Équipement de chauffage et de refroidissement ergonomique Download PDF

Info

Publication number
WO2021200176A1
WO2021200176A1 PCT/JP2021/010931 JP2021010931W WO2021200176A1 WO 2021200176 A1 WO2021200176 A1 WO 2021200176A1 JP 2021010931 W JP2021010931 W JP 2021010931W WO 2021200176 A1 WO2021200176 A1 WO 2021200176A1
Authority
WO
WIPO (PCT)
Prior art keywords
chiller
control box
control
boxes
operator
Prior art date
Application number
PCT/JP2021/010931
Other languages
English (en)
Inventor
Kai MATSUHASHI
Hidehiro Ishii
Original Assignee
Daikin Industries, 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 Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2021200176A1 publication Critical patent/WO2021200176A1/fr

Links

Images

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
    • 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
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/006—Cooling of compressor or motor
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • 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
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25B2400/12—Inflammable refrigerants
    • F25B2400/121—Inflammable refrigerants using R1234
    • 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
    • F25B2500/19—Calculation of parameters
    • 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
    • F25B2600/00—Control issues
    • F25B2600/07—Remote controls
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/15—Power, e.g. by voltage or current
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures

Definitions

  • This invention relates generally to ergonomically designed heating and cooling equipment and, in particular, to distributed controller arrangements for chillers used for heating, ventilation, air conditioning and refrigeration.
  • HVAC heating, ventilation, and air-conditioning
  • a fluid refrigerant circulates through a closed loop of tubing that uses compressors and other flow-control devices to manipulate the refrigerant’s flow and pressure, causing the refrigerant to cycle between the liquid and gas phases.
  • These phase transitions generally occur within the HVAC’s heat exchangers, which are part of the closed loop and designed to transfer heat between the circulating refrigerant and flowing ambient air. This is the foundation of the refrigeration cycle.
  • the heat exchanger where the refrigerant transitions from a gas to a liquid is called the “condenser,” and the condensing fluid releases heat to the surrounding environment.
  • the heat exchanger where the refrigerant transitions from liquid to gas is called the “evaporator,” and the evaporating refrigerant absorbs heat from the surrounding environment.
  • chillers are an economical way to control the indoor climate of large buildings.
  • multiple fluid loops cooperate to transfer heat from one location to another.
  • the refrigerant loop At the core of a typical chiller is the refrigerant loop that circulates a fluid refrigerant transitioning between liquid and gaseous phases, to create the desired absorption or release of heat. This is similar to traditional residential systems. But instead of the refrigerant transferring or absorbing heat directly to or from the surrounding or circulating air, chillers often employ loops of circulating water to which or from which heat is transferred.
  • the refrigerant loop’s evaporator may be designed to absorb heat from water circulating in a chilled-water loop that, in turn, absorbs heat from the indoor environment via a heat exchanger in an air-handling unit.
  • the refrigerant loop’s condenser may be designed to release heat from the circulating refrigerant to water circulating in a cooling-water loop that, in turn, releases heat to the outdoor environment via a heat exchanger in a cooling tower.
  • Chiller size can vary depending on the tonnage of the chiller.
  • a Refrigeration Ton (RT) is equal to the amount of heat required to melt one ton of ice in a 24-hour period or about equal to 12,000 BTU/hour.
  • Commercial or industrial chillers may be at least 30 RTs and can be as high as 2,000 tons or higher.
  • control boxes and panels can present an issue.
  • control boxes are placed above the average operator height which requires the operator to use a ladder or stairs to access the control box.
  • a control box may be placed next to the chiller which increases the total footprint of the chiller.
  • the use of a single large control box may also present issues for the operator.
  • Embodiments of the present disclosure generally relate to a chiller system for supplying chilled water to a building comprising a chiller that has a capacity of at least 30 tons, a first chiller control box that has an upper surface that is less than two meters high, and a second chiller control box that has an upper surface that is less than two meters high and is in data communication with the first chiller control box.
  • Embodiments of the present disclosure generally relate to a refrigeration system comprising a chiller with at least a 300 refrigeration ton (RT) capacity mounted on a frame, one or more programable logic controllers, a first control box mounted on the frame, and a second control box mounted on the frame.
  • the first control box is in wireless communication with the second control box, and the first and second control boxes each have an upper side and a lower side.
  • the lower side of the first control box and second control box is about 1.6 meters high and the upper side of the first control box and second control box is about 1.8 meters high.
  • one or more chiller control boxes is ergonomically positioned so that an operator can access the control box without the use of a ladder and without reaching overhead.
  • the ergonomic positioning of one or more control boxes reduces the likelihood of operator injury due to falling or shoulder strain.
  • FIG. 1 illustrates schematically a chiller system for a building in accordance with one embodiment of the present disclosure.
  • FIG. 2 illustrates a chiller system for a building in accordance with a traditional design.
  • FIG. 3 illustrates schematically a chiller system for a building with a single control box.
  • FIG. 4 illustrates schematically a chiller system for a building with a plurality of control boxes in accordance with one embodiment of the present disclosure.
  • FIG. 5A, 5B, and 5C illustrate schematically an operator standing next to a chiller heat exchanger and control box.
  • FIG. 1 illustrates an overview of a chiller system 100.
  • a refrigeration loop 110 At the center of the chiller is a refrigeration loop 110.
  • a compressor 120 converts a relatively cool low-pressure refrigerant gas into a hot high-pressure gas. That hot high-pressure gas then transitions into a high-pressure liquid refrigerant in the condenser 125.
  • heat from the high-pressure gas is transferred to the water circulating in a cooling water-loop 130, often through a heat exchanger in the condenser 125.
  • the heat transferred to the water in the cooling-water loop 130 is expelled to the outdoor environment via another heat exchanger in a cooling tower 140. It will be noted that heat may be expelled from the water loop using a ground loop, or other form of heat exchange other than a cooling tower.
  • the now-liquid refrigerant leaving the condenser 125 in the refrigerant loop transitions into a low-pressure liquid when it passes through an expansion valve 127. This drop in pressure also reduces the temperature of the refrigerant as it becomes a low-pressure liquid.
  • the cool low-pressure liquid then enters the evaporator 145 where heat is transferred back into the refrigerant, converting the refrigerant into back into a low-pressure gas to be compressed by the compressor.
  • the heat transferred to the refrigerant in the evaporator 145 is provided by water circulating in a chilled-water loop 150, often through a heat exchanger in the evaporator 145.
  • the chilled-water loop 150 carries the now-cooled water to air-handling units (AHUs) 160 that circulate the building’s indoor air over a heat exchanger, to cool the indoor space.
  • AHUs air-handling units
  • the refrigerant could be any number of refrigerants, including, without limitation, R410A, R32, R454B, R452B, R134a, R513A, R515A, R515B, HFO refrigerants such as HFO-1234ze, HFO-1233zd, or HFO-1234yf, or any number of combinations thereof.
  • FIG. 2 shows a person standing next to a chiller with a control box.
  • the person in the image is about 1.8m or 6 feet tall.
  • the bottom surface of the control box is about 2m above the floor surface.
  • the control box is about 0.5m tall, so the top surface of the control box is about 2.5m above the floor surface the chiller is resting on and the person is standing on.
  • the operator is required to use a ladder, stairs, or similar device.
  • the use of a ladder, stairs, or similar device increases the risk of an accident or injury occurring while the operator is accessing the control box.
  • By ergonomically configuring one or more chiller control boxes operator injury may be reduced.
  • a control box allows an operator or user to operate, adjust, manage, diagnose, maintain, and/or repair the chiller.
  • a control box may contain terminal blocks, programable logic controller (PLC) inputs and outputs, human machine interface (HMI), relays, power supplies, circuit breakers or fuses, PC modules, noise filter and/or a power conditioning circuit.
  • PLC programable logic controller
  • HMI human machine interface
  • relays power supplies
  • circuit breakers or fuses PC modules
  • noise filter and/or a power conditioning circuit are generally contained within a housing or cabinet. Traditionally, these components have been housed within a single large control box housing. This arrangement centralizes the components, but can require that an operator reach a significant distance from the bottom of the control box to the top of the control box while operating the device. For some operators, this may mean that at least a portion of the control box is outside of the ideal working height for that user even if the user is on a ladder.
  • the operator may be forced to either work overhead or bend down to access the control box or certain controls within the control box.
  • Working overhead or working while bending down both violate general safety principles and can lead to accidents and injuries even without the use of a ladder.
  • FIG 3 illustrates schematically a chiller according to one embodiment.
  • the control box is about 1.5 m above the surface the chiller is resting on.
  • the control box itself is 0.6m tall, making the top surface of the control box about 2.1 m high.
  • This arrangement places portions of the control box within the ideal working zone for a typical operator but may still require an operator to work overhead to reach controllers and components located toward the top of the control box. If the operator works overhead for a sustained period of time, the operator may experience shoulder or other injuries. If the control box were lowered such that the upper portion of the control box were located in the ideal working range for a typical operator, the operator would be required to bend down to access the controllers and components located at the lower portion of the control box.
  • the preferred working range for a typical operator is at or below the eye-level of the operator and high enough that the operator does not need to squat, kneel, or bend over to access the control panel.
  • the operator should not be required to use a ladder or other stepping device to access the control panel.
  • FIG. 4 illustrates schematically a chiller using multiple control boxes according to one embodiment.
  • the chiller is at least a 300 refrigeration ton (RT) chiller or at least a 1,000 RT chiller, or at least a 3,000 RT chiller.
  • a plurality of control boxes may be utilized, rather than a single large control box. This has the benefit of allowing an operator to access the entirety of any single control box without reaching across a large distance or outside of the ideal working area for the operator.
  • the upper surface of a control box is about 2.0 meters high, or about 1.8 meters high, or about 1.6 meters high.
  • lower surface of a control box is about 1.3 meters high, or about 1.5 meters high, or about 1.7 meters high.
  • a control box has a height from the lower surface of the control box to the upper surface of the control box of about 1.0 meters, or about 0.6 meters, or about 0.3 meters, or about 0.2 meters.
  • a chiller includes a single primary control box and plurality of secondary control boxes. In such embodiments, one or all of the secondary control boxes are in communication with the primary control box. In some embodiments, the user may operate the chiller from the primary control box without physically accessing the secondary control boxes.
  • control boxes may be separated based on function. For example, a first control box may provide the operator with data and control feature related to temperature, a second control box may provide the operator with data and control features related to pressure, and a third control box may provide the operator with data and control features related to powering the chiller system.
  • this arrangement simplifies wiring arrangements and may reduce wiring errors.
  • the use of multiple separate control boxes reduces the amount of electrical noise at certain locations in the chiller and/or control box.
  • Chiller sensors may include but are not limited to, for example, temperature sensors, pressure sensors, flow sensors, voltage sensors, amperage sensors, RPM sensors, and/or liquid sensors.
  • the chiller is configured to transmit data from one or more sensors to the plurality of control boxes.
  • One or more of the plurality of control boxes is configured to display the data to an operator and/or allow the operator to control the operations of the chiller through a human machine interface (HMI).
  • HMI human machine interface
  • two or more control boxes are in wireless communication with each other.
  • one or more control box is in wireless communication with a sensor, processor, controller, or other chiller component that is positioned outside of the control box.
  • Wireless communication may be achieved using a Wi-Fi, 5G, Bluetooth(Registered Trademark), radio-wave, infrared, or similar methods of data communication.
  • a local wireless communication module is used to transmit wireless signals from a first control box to a second control box.
  • multiple modalities of wireless communication may be used within a single chiller system.
  • an indicator light or other notification provides the operator with an indication of the communication status between multiple control boxes or between a control box and a sensor. If electrical noise or any other external factor interferes with the transmission of a data signal from a sensor to a control box or from a first control box to a second control box, the indicator light informs the operator. The operator may use the information from this indicator light to determine if service is required or if the operations of the chiller should be adjusted. In some embodiments, if certain data signals are interrupted, the chiller may deactivate or transition to a safe state until the operator can diagnose or remedy the cause of the interrupted data signal.
  • FIG. 5A illustrates schematically a side view of a chiller using control boxes according to one embodiment. As shown in FIG. 5A, the use of a plurality of control boxes allows an operator to reach the entire control box while each control box is positioned above the chiller rather than in front or, or next to the chiller.
  • FIG. 5B illustrates schematically a chiller using a larger control box that is positioned next to or in front of the chiller. This arrangement increases the total footprint of the chiller and may prevent an operator from accessing certain portions of the chiller. Additionally, the operator may be required to work overhead or bend down in order to access the higher or lowest portions of the large control box.
  • FIG. 5C illustrates schematically a chiller using a larger control box that is positioned above the chiller. This arrangement requires the operator to reach overhead or to climb on stairs or a ladder to access the control box. Both climbing on a ladder to access the control box and working overhead increase the likelihood of the operator being injured while working on the chiller.
  • control boxes improves the ergonomics of the chiller for the operator or service personnel and allows for easier access to the control boxes.
  • the use of control boxes may also reduce the overall chiller size and/or footprint, reduce installation time, and reduce costs associated with miswiring.
  • a high tonnage chiller (at least 30 refrigeration tons) is equipped with two or more control boxes.
  • the first control box is in data communication with the second control box and with a chiller sensor positioned outside of the control boxes.
  • the second chiller control box may be in 5G data communication with the first chiller control box.
  • the first and second control boxes each have an upper surface that is less than two meters above the surface that the chiller rests on and the operator stands on when accessing the control boxes.
  • the first and second control boxes each have a lower surface that is higher than 1.5 meters above the surface that the chiller rests on and the operator stands on when accessing the control boxes.

Landscapes

  • 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)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente divulgation concerne un système de refroidissement permettant d'alimenter en eau refroidie un bâtiment. Certains modes de réalisation de la présente divulgation concernent des systèmes de refroidissement utilisant une pluralité de boîtiers de commande ergonomiques. Selon certains modes de réalisation, les boîtiers de commande ergonomiques sont en communication de données sans fil entre eux et/ou avec un ou plusieurs capteurs situés à l'extérieur des boîtiers de commande. Certains modes de réalisation de la présente divulgation permettent l'accès d'un opérateur aux panneaux de commande sans utilisation d'une échelle ou d'un escalier. Certains modes de réalisation de la présente divulgation concernent un système de refroidissement ne requérant pas qu'un opérateur atteigne la partie en haut afin de régler les fonctionnements du système de refroidissement.
PCT/JP2021/010931 2020-03-30 2021-03-17 Équipement de chauffage et de refroidissement ergonomique WO2021200176A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/833,983 US20210302082A1 (en) 2020-03-30 2020-03-30 Ergonomic heating and cooling equipment
US16/833,983 2020-03-30

Publications (1)

Publication Number Publication Date
WO2021200176A1 true WO2021200176A1 (fr) 2021-10-07

Family

ID=75530110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/010931 WO2021200176A1 (fr) 2020-03-30 2021-03-17 Équipement de chauffage et de refroidissement ergonomique

Country Status (2)

Country Link
US (1) US20210302082A1 (fr)
WO (1) WO2021200176A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011241996A (ja) * 2010-05-14 2011-12-01 Mitsubishi Electric Corp 冷凍機モジュール、およびこれを用いた冷凍機システム
US20160209852A1 (en) * 2015-01-16 2016-07-21 Johnson Controls Technology Company Systems and methods for adaptive capacity constraint management
CN109462952A (zh) * 2018-11-15 2019-03-12 北京华清元泰新能源技术开发有限公司 一种制冷系统智能控制箱

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011241996A (ja) * 2010-05-14 2011-12-01 Mitsubishi Electric Corp 冷凍機モジュール、およびこれを用いた冷凍機システム
US20160209852A1 (en) * 2015-01-16 2016-07-21 Johnson Controls Technology Company Systems and methods for adaptive capacity constraint management
CN109462952A (zh) * 2018-11-15 2019-03-12 北京华清元泰新能源技术开发有限公司 一种制冷系统智能控制箱

Also Published As

Publication number Publication date
US20210302082A1 (en) 2021-09-30

Similar Documents

Publication Publication Date Title
KR100823655B1 (ko) 통신장비용 냉방장치 및 그 제어방법
WO2018230281A1 (fr) Système de climatisation, procédé de climatisation et dispositif de commande
JP2015059691A (ja) 空気調和機及び空気調和システム
KR102122592B1 (ko) 공기조화시스템의 제어방법
JP4740344B2 (ja) 通信装備用冷房装置及びその制御方法
KR20110104054A (ko) 부하 처리 밸런스 설정 장치
JP6363428B2 (ja) 熱媒体循環システム
WO2021200176A1 (fr) Équipement de chauffage et de refroidissement ergonomique
JP6096560B2 (ja) 装置冷却システム
US20150159935A1 (en) Apparatus with dehumidification and defrosting abilities and controlling method thereof
EP2339267B1 (fr) Appareil à cycle de réfrigération, climatiseur d'air alimenté en eau chaude de type pompe à chaleur et unité d'extérieur correspondante
WO2019038880A1 (fr) Climatiseur
KR101702008B1 (ko) 복합공조 방식의 통신장비용 냉방장치
JP6430758B2 (ja) 冷却システム
CN1097857A (zh) 空调器
KR102346627B1 (ko) 공기조화기 및 그 제어방법
KR20160041561A (ko) 공기조화장치용 컨트롤러
JP7068537B1 (ja) 空気調和装置および制御方法
CN206575734U (zh) 自动排热电气控制柜
WO2020059106A1 (fr) Unité de relais
JP2016024672A (ja) 冷却装置
JP2007093151A (ja) 空気調和機
CN213402839U (zh) 一种硅桥并联电路及空调器
US11619409B2 (en) Control system for a heating, ventilation, and air-conditioning system
WO2023203595A1 (fr) Dispositif de climatisation et procédé d'identification de position d'installation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21718974

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21718974

Country of ref document: EP

Kind code of ref document: A1