WO2020037901A1 - Unité, dispositif d'isolation et procédé et dispositif de traitement de fuite de fluide frigorigène - Google Patents

Unité, dispositif d'isolation et procédé et dispositif de traitement de fuite de fluide frigorigène Download PDF

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Publication number
WO2020037901A1
WO2020037901A1 PCT/CN2018/121580 CN2018121580W WO2020037901A1 WO 2020037901 A1 WO2020037901 A1 WO 2020037901A1 CN 2018121580 W CN2018121580 W CN 2018121580W WO 2020037901 A1 WO2020037901 A1 WO 2020037901A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
unit
main controller
isolation
protection mode
Prior art date
Application number
PCT/CN2018/121580
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English (en)
Chinese (zh)
Inventor
刘洋
陈培生
程琦
王朴忠
Original Assignee
珠海格力电器股份有限公司
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Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2020037901A1 publication Critical patent/WO2020037901A1/fr

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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
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data

Definitions

  • the present invention relates to the field of generating units, and in particular, to a generating unit, an isolation device, and a method and device for processing refrigerant leakage.
  • An embodiment of the present invention provides a unit, an isolation device, and a method and a device for processing refrigerant leakage, so as to solve the problem of hidden safety hazards when the refrigerant of the unit leaks in the prior art.
  • the present invention provides a unit including: a refrigerant detection device, a main controller,
  • the refrigerant detection device is located at the air outlet of the unit, and is used to detect the refrigerant concentration in the air at the air outlet, and when the refrigerant concentration exceeds the refrigerant threshold, an abnormal signal is sent to the main controller;
  • the main controller is connected to the refrigerant detection device and is configured to trigger an emergency protection mode after receiving the abnormal signal.
  • the unit further includes: a blower device,
  • the main controller is connected to the air supply device and is configured to send a control instruction to the air supply device after triggering the emergency protection mode;
  • the air supply device is configured to stop operation according to the control instruction.
  • the air supply device includes: a fan and / or a damper.
  • the unit further includes: a compressor,
  • the main controller is connected to the compressor, and is configured to send a control instruction to the compressor after the emergency protection mode is triggered;
  • the compressor is configured to stop running according to the control instruction.
  • main controller is further configured to control the entire machine to stop running after the emergency protection mode is triggered.
  • the unit further comprises: a refrigerant isolating plate, which is arranged around the vibration part of the unit and the connecting pipe of the vibration part to form a refrigerant isolation area.
  • the unit further includes: an exhaust fan disposed on the refrigerant isolating plate;
  • the main controller is connected to the exhaust fan, and is configured to send a control instruction to the exhaust fan after triggering the emergency protection mode;
  • the exhaust fan is configured to discharge the refrigerant in the refrigerant isolation area according to the control instruction.
  • the refrigerant isolation plate is sealed with a sealing strip and / or a sealing plate.
  • the vibration component includes at least one of the following: a compressor and a condenser.
  • the refrigerant detecting device is further configured to issue a fault alarm signal when the concentration of the refrigerant exceeds a refrigerant threshold.
  • the unit further includes: a fault alarm device,
  • the main controller is connected to the fault alarm device and is further configured to control the fault alarm device to perform an alarm after receiving the abnormal signal.
  • the main controller is further configured to start a maintenance program after receiving the abnormal signal.
  • main controller is further configured to notify the main console to start a maintenance program after receiving the abnormal signal.
  • main controller is further configured to control the whole operation of the unit when the refrigerant concentration does not exceed the refrigerant threshold.
  • the condenser is a shell and tube condenser.
  • the unit is a water-cooled direct cooling air-conditioning unit.
  • an embodiment of the present invention provides an isolation device, where the isolation device is applied to the unit described in the first aspect,
  • the isolating device includes a refrigerant isolating plate, and the refrigerant isolating plate is arranged around the vibration component of the unit and the connecting pipeline of the vibration component to form a refrigerant isolation area.
  • the refrigerant isolation plate is sealed with a sealing strip and / or a sealing plate.
  • an exhaust fan is provided on the isolation plate, and the exhaust fan is used to discharge the refrigerant in the refrigerant isolation zone.
  • an embodiment of the present invention provides a refrigerant leakage processing method.
  • the method is applied to the unit described in the first aspect, and the method includes:
  • an emergency protection mode is triggered.
  • triggering the emergency protection mode includes:
  • the air supply device includes a fan and / or a damper.
  • triggering the emergency protection mode further includes:
  • triggering the emergency protection mode further includes:
  • the exhaust fan is controlled to start; wherein the exhaust fan is arranged on a refrigerant isolating plate, and the refrigerant isolating plate is arranged around the vibration component of the unit and the connecting pipeline of the vibration component to form a refrigerant isolation area.
  • the method further includes:
  • the normal operation of the unit is controlled.
  • the method further includes:
  • a fault alarm signal is issued.
  • the method further includes:
  • the method further includes:
  • an embodiment of the present invention provides a refrigerant leakage processing apparatus, where the apparatus is configured to execute the method described in the third aspect, and the apparatus includes:
  • a detection module for detecting the refrigerant concentration in the air at the air outlet
  • a triggering module is configured to trigger an emergency protection mode when the refrigerant concentration exceeds a refrigerant threshold.
  • the unit includes: a refrigerant detection device, a main controller, and a refrigerant detection device, which are located at the air outlet of the unit and used to detect the refrigerant concentration in the air at the air outlet.
  • the main controller sends an abnormal signal; the main controller is connected to the refrigerant detection device and is used to trigger an emergency protection mode after receiving the abnormal signal. Therefore, when a refrigerant leakage is detected, an emergency protection mode can be triggered to ensure user safety, reduce potential safety hazards, and increase the safety factor of the unit.
  • FIG. 1 is a structural block diagram of a unit according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a unit according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an isolation device according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a refrigerant leakage processing method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a refrigerant leakage processing method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a refrigerant leakage processing method according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a refrigerant leakage processing method according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a refrigerant leakage processing device according to an embodiment of the present invention.
  • an embodiment of the present invention provides a unit. As shown in FIG. 1, the unit includes: a refrigerant detection device 1, a main controller 2,
  • the refrigerant detection device 1 is located at the air outlet 3 of the unit and is used to detect the refrigerant concentration in the air at the air outlet 3, and sends an abnormal signal to the main controller 2 when the refrigerant concentration exceeds the refrigerant threshold;
  • the main controller 2 is connected to the refrigerant detection device 1 and is used to trigger an emergency protection mode after receiving an abnormal signal.
  • an emergency protection mode can be triggered to ensure user safety, reduce potential safety hazards, and increase the safety factor of the unit.
  • the main controller 2 is further configured to control the entire unit to operate normally when the refrigerant concentration does not exceed the refrigerant threshold. That is, if the refrigerant detecting device 1 finds no abnormality during the startup operation of the unit, the unit can operate normally.
  • the unit further includes: a blower device 4 and a main controller 2 connected to the blower device 4 for sending a control instruction to the blower device 4 after the emergency protection mode is triggered;
  • the device 4 is used for stopping the operation according to the control instruction.
  • the air supply device 4 includes a fan 4 and / or a damper.
  • the air-supplying device in FIG. 2 is a fan, and the same reference numerals are used.
  • an emergency protection mode may be activated, specifically: controlling the air supply device 4 to be closed, that is, controlling the air supply fan 4 and / or the air valve to be closed.
  • the fan 4 and the damper can be used together. When the refrigerant leaks, both of them can be closed to further ensure that the refrigerant will not flow to the passenger area.
  • the solution of the present application can also be implemented because the air flow is extremely small. If only the air valve is closed, it is equivalent to directly closing the outlet. At this time, whether the fan 4 is closed does not affect the solution of the application. .
  • the unit further includes: a compressor 5, a main controller 2, connected to the compressor 5, and used to send a control instruction to the compressor 5 after the emergency protection mode is triggered. ; Compressor 5 for stopping operation according to the control instruction.
  • the main controller 2 is also used to control the entire unit to stop running after the emergency protection mode is triggered.
  • the above two methods can be implemented in one of two ways. The present invention does not limit this. Shutting down the compressor 5 or stopping the entire unit of the control unit can further ensure that the refrigerant will not flow to the passenger area and ensure the safety of the user.
  • the unit further includes: a refrigerant isolation plate 6, which is arranged around the vibration components of the unit and the connecting pipes of the vibration components to form a refrigerant isolation zone.
  • the unit also includes: an exhaust fan 7 (that is, a refrigerant leakage maintenance exhaust fan shown in FIG. 2), which is arranged on the refrigerant isolating plate 6; a main controller 2, which is connected to the exhaust fan 7 and is used to trigger an emergency protection mode, Send a control instruction to the exhaust fan 7; the exhaust fan 7 is used to discharge the refrigerant in the refrigerant isolation zone according to the control instruction.
  • the refrigerant isolation plate 6 is sealed with a sealing strip and / or a sealing plate.
  • the vibration component includes at least one of the following: a compressor 5 and a condenser 8.
  • the refrigerant isolating plate 6 can surround the compressor 5, the condenser shell tube 8 (condenser 8) and the connecting pipelines of the two, and the adjacent pipelines and other areas where the refrigerant is easy to leak on the vibration source side, so as to carry out the structure. Protection.
  • FIG. 2 Taking the unit as a water-cooled direct cooling air-conditioning unit as an example, its structure is shown in Figure 2, including: return air port 9, compressor 5, condenser shell tube 8 (condenser 8), refrigerant leakage maintenance exhaust fan 7 (exhaust fan 7) ), Electronic expansion valve 11, refrigerant isolation plate 6, direct cooling evaporator 10, distributed air blower 4 (the number can be one or multiple), refrigerant detection device 1, air outlet 3, and can be adjusted according to The effect is divided into three sections, namely the main section, the evaporation section and the air supply section.
  • the return air is sent to the return air port 9 of the host through the return air duct, and then passes through compression 5, condenser 8, etc., and enters the evaporator 10 for cooling.
  • the evaporator 10 may be a direct expansion evaporator.
  • the cooled cold air is then sent directly to the end of the site through the distributed air blower through the air outlet 3. Therefore, the arrangement of the refrigerant isolating plate 6 can make the return air reach the evaporator 10 through the upper space of the refrigerant isolating plate 6 to prevent the refrigerant from flowing with the air to the air supply duct, thereby causing a hidden safety hazard.
  • the refrigerant isolating plate 6 may be processed by using a sealing plate and a sealing strip, thereby preventing a large amount of refrigerant from leaking to the air supply area, and also preventing the refrigerant from leaking to all parts of the unit, making it difficult for subsequent maintenance work.
  • the refrigerant leakage maintenance exhaust fan 7 is located on any one of the isolation plates in the isolation area, and a suitable opening can be opened at the position where the refrigerant leakage exhaust fan 7 is located according to its size and model. During maintenance of the unit, the leaked refrigerant can pass through this opening, and then be led out of the unit through the exhaust fan 7 and discharged to the outdoor space to ensure the safety of the maintenance personnel.
  • the unit in the embodiment of the present application may be a water-cooled direct cooling air-conditioning unit, and may be applied to a station of an underground track.
  • the condenser 8 may be a shell and tube condenser 8.
  • the refrigerant detecting device 1 is further configured to issue a fault alarm signal when the refrigerant concentration exceeds the refrigerant threshold.
  • the main controller 2 is further configured to start a maintenance program after receiving the abnormal signal. After receiving the abnormal signal, it can also send a signal to the main console (for example, the main console in the subway) to notify the main console to start the maintenance program.
  • the main console for example, the main console in the subway
  • the crew cannot determine whether the refrigerant is in a normal state, and after a large amount of refrigerant leaks, it will directly enter the passenger area with the blower, causing passenger panic and causing public safety issues.
  • a large amount of refrigerant has leaked into the machine room or the inside of the sample casing, which caused difficulties in the maintenance.
  • the refrigerant detection device 1 can detect the refrigerant concentration in the air of the air outlet 3 in real time or in different periods, and communicates with the main controller 2 so that the main controller 2 can accurately and timely know the abnormality of the refrigerant and reduce Hidden safety hazards that may arise when refrigerant leaks, the use of isolation plate 6 prevents refrigerant from leaking around the unit, and the fault alarm device can promptly notify the console to start the maintenance program, and start the refrigerant isolation plate before maintenance.
  • Refrigerant leakage maintenance exhaust fan 7 to ensure the safety of maintenance personnel, notify maintenance personnel to timely perform maintenance of the unit when the unit is not damaged excessively, to ensure the safety of the unit as much as possible, and to improve the reliability of the unit.
  • a refrigerant isolation area is added in a region with a large vibration such as a compressor and a condenser, and a refrigerant detection device 1 is added to detect a refrigerant leakage situation, and a host emergency response control method is disclosed when the refrigerant leaks.
  • the addition of an exhaust fan 7 is conducive to increasing the exhaust air control of the host's refrigerant isolation zone during maintenance. Taking all the above factors into consideration, the safety factors such as unit operation and after-sales maintenance can be improved, thereby enhancing the unit's competitiveness.
  • FIG. 3 shows a schematic structural diagram of an isolation device according to an embodiment of the present invention.
  • the isolation device can be applied to the above-mentioned unit.
  • the isolation device includes a refrigerant isolating plate 6, and the refrigerant isolating plate 6 is disposed in the unit
  • the surrounding parts of the vibrating parts and the connecting pipes of the vibrating parts are used to form a refrigerant isolation zone.
  • the refrigerant isolation plate 6 is sealed with a sealing strip and / or a sealing plate.
  • an exhaust fan 7 is provided on the isolation plate 6, and the exhaust fan is used to discharge the refrigerant in the refrigerant isolation zone.
  • the isolation plate can be processed by using a sealing plate and a sealing strip, so that a large amount of refrigerant can be prevented from leaking to the air supply area, and the refrigerant can be prevented from leaking to various parts of the unit, making subsequent maintenance work more difficult.
  • the refrigerant leakage maintenance exhaust fan 7 is located on any one of the isolation plates 6 in the isolation area, and a suitable opening can be opened at the position where the refrigerant leakage exhaust fan 7 is located according to the size and model of the refrigerant exhaust fan 7. During maintenance of the unit, the leaked refrigerant can pass through this opening, and then be led out of the unit through the exhaust fan and discharged to the outdoor space to ensure the safety of maintenance personnel.
  • An embodiment of the present invention also provides a refrigerant leakage processing method. As shown in FIG. 4, the method is applied to the above-mentioned unit, and the method includes:
  • Step S401 Detect the refrigerant concentration in the air at the air outlet
  • Step S402 When the refrigerant concentration exceeds the refrigerant threshold, an emergency protection mode is triggered.
  • an emergency protection mode can be triggered to ensure user safety, reduce potential safety hazards, and increase the safety factor of the unit.
  • step S402 triggering the emergency protection mode includes:
  • Step S4021 controlling the air supply device to stop running, wherein the air supply device includes a fan and / or a damper.
  • step S402 triggering the emergency protection mode further includes: controlling the compressor to stop running or controlling the entire unit to stop running.
  • step S402 triggering the emergency protection mode further includes:
  • Step S4022 controlling the exhaust fan to start
  • the exhaust fan is arranged on the refrigerant isolating plate, and the refrigerant isolating plate is arranged around the vibration parts of the unit and the connecting pipes of the vibration parts, forming a refrigerant isolation area.
  • the method further includes: when the refrigerant concentration does not exceed the refrigerant threshold, controlling the entire unit to operate normally.
  • the method further includes: sending a fault alarm signal.
  • the method further includes: starting a maintenance program.
  • FIG. 7 shows a flowchart of a refrigerant leakage processing method according to an embodiment of the present invention. As shown in FIG. 7, the method includes:
  • Step S701 the unit is turned on
  • Step S702 Determine whether the refrigerant detection device detects the refrigerant? If yes, go to step S703; if no, go to step S708;
  • Step S703 The air supply fan / air valve is closed (not started);
  • Step S704 emergency protection, stopping the compressor operation
  • Step S705 the refrigerant leakage maintenance exhaust fan is turned on
  • Step S706 Notify the console to start the maintenance program; perform steps S707 or S709;
  • Step S707 determine whether the unit is on standby, if yes, go to step S702; if not, go to step S706;
  • Step S708 the air supply fan / air valve is turned on
  • Step S709 the whole machine runs
  • Step S7010 the unit is turned off.
  • the unit in the scenario where the unit is not shut down, when the console is notified to start the maintenance program, the unit can enter the standby state, at which time the refrigerant detection device can continue to work; when the unit is not in the standby state, the notification information may not be communicated At this point, the console should continue to be notified to start the maintenance procedure until the unit enters the standby state.
  • an emergency protection mode can be triggered to ensure user safety, reduce potential safety hazards, and increase the safety factor of the unit.
  • An embodiment of the present invention further provides a refrigerant leakage processing device, where the device is configured to execute the foregoing method, and the device includes:
  • a detection module 801 configured to detect a refrigerant concentration in the air at the air outlet
  • a triggering module 802 is configured to trigger an emergency protection mode when the refrigerant concentration exceeds a refrigerant threshold.
  • an emergency protection mode can be triggered to ensure user safety, reduce potential safety hazards, and increase the safety factor of the unit.
  • the methods in the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is better.
  • Implementation Based on such an understanding, the technical solution of the present invention, in essence, or a part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, The optical disc) includes several instructions for causing a mobile terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present invention.
  • a mobile terminal which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne une unité, un dispositif d'isolation et un procédé et un dispositif de traitement de fuite de fluide frigorigène. L'unité comprend un dispositif de détection de fluide frigorigène (1) et un dispositif de commande maître (2) ; le dispositif de détection de fluide frigorigène (1) est situé au niveau de l'ouverture d'alimentation en air (3) de l'unité et utilisé pour détecter la concentration du fluide frigorigène dans l'air au niveau de l'ouverture d'alimentation en air, et lorsque la concentration du fluide frigorigène dépasse une valeur seuil de fluide frigorigène, transmettre un signal anormal au dispositif de commande maître (2) ; le dispositif de commande maître (2) est connecté au dispositif de détection de fluide frigorigène (1) et utilisé pour déclencher un mode de protection d'urgence après la réception du signal anormal. Par conséquent, lorsque le fluide frigorigène fuit, le mode de protection d'urgence peut être déclenché de façon à garantir la sécurité d'un utilisateur et augmenter le facteur de sécurité de l'unité.
PCT/CN2018/121580 2018-08-21 2018-12-17 Unité, dispositif d'isolation et procédé et dispositif de traitement de fuite de fluide frigorigène WO2020037901A1 (fr)

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CN201810956447.4A CN108954666A (zh) 2018-08-21 2018-08-21 一种机组、隔离装置及冷媒泄漏处理方法、装置
CN201810956447.4 2018-08-21

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EP3933288B1 (fr) * 2019-04-29 2023-10-25 GD Midea Air-Conditioning Equipment Co., Ltd. Unité intérieure de climatiseur
CN114623518A (zh) * 2020-12-14 2022-06-14 广东美的暖通设备有限公司 空调室外机及其应用的管组总成

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