EP1746364A2 - Inspektionsverfahren einer Klimaanlage - Google Patents

Inspektionsverfahren einer Klimaanlage Download PDF

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Publication number
EP1746364A2
EP1746364A2 EP05026903A EP05026903A EP1746364A2 EP 1746364 A2 EP1746364 A2 EP 1746364A2 EP 05026903 A EP05026903 A EP 05026903A EP 05026903 A EP05026903 A EP 05026903A EP 1746364 A2 EP1746364 A2 EP 1746364A2
Authority
EP
European Patent Office
Prior art keywords
indoor units
operation mode
units
cooling
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05026903A
Other languages
English (en)
French (fr)
Other versions
EP1746364A3 (de
Inventor
Hyo Suk Kim
Su Ho Jo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1746364A2 publication Critical patent/EP1746364A2/de
Publication of EP1746364A3 publication Critical patent/EP1746364A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • 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
    • 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
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F3/065—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 with a plurality of evaporators or 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve

Definitions

  • the present invention relates to an air conditioner inspection method, and, more particularly, to a method of inspecting a multi air conditioner comprising at least one outdoor unit and a plurality of indoor units connected to the at least one outdoor unit via a mode change unit (hereinafter, referred to as "MCU").
  • MCU mode change unit
  • a multi air conditioner includes at least one outdoor unit, a plurality of indoor units connected in parallel to the outdoor unit, communication cables, power cables, and refrigerant pipes connected between the outdoor unit and the indoor units, and electronic valves.
  • an installer connects the outdoor unit and the indoor units via the communication cables, the power cables, and the refrigerant pipes, and uses input devices (for example, rotary switches) provided for the respective indoor units to input numbers of the refrigerant pipes connected to the respective indoor units so that an outdoor unit microcomputer or indoor unit microcomputers recognize the numbers of the refrigerant pipes connected to the indoor units.
  • input devices for example, rotary switches
  • the number of the refrigerant pipes and the indoor units, to which the refrigerant pipes are connected is large, and therefore, much time is used to confirm whether the refrigerant pipes are normally(correctly, in other words) connected to the indoor units according to the numbers of the refrigerant pipes inputted through the input device by the installer.
  • the present invention provides a method of inspecting an air conditioner including a plurality of indoor units having cooling and heating valves and a plurality of mode change units connected to the indoor units, via pipes, to control refrigerant flow to the indoor units such that cooling operation mode and heating operation mode of the respective indoor units are controlled, the method comprising: operating all the indoor units in one of the cooling operation mode and heating operation mode for a predetermined period of time; and, when all the indoor units are normally operated in the selected operation mode, determining that all the valves corresponding to the selected operation mode among the cooling and heating valves of the indoor units are normally operated.
  • the air conditioner inspection method further comprises: when outdoor temperature is low, and therefore, the heating operation is more effective than the cooling operation for inspection of the installation state of the air conditioner, operating all the indoor units in the heating operation mode to raise temperatures of indoor spaces where the indoor units are installed such that the indoor units can be operated in the cooling operation mode; and, when the outdoor temperature is high, and therefore, the cooling operation is more effective than the heating operation for inspection of the installation state of the air conditioner, operating all the indoor units in the cooling operation mode to lower temperatures of indoor spaces where the indoor units are installed such that the indoor units can be operated in the heating operation mode.
  • the present invention provides a method of inspecting an air conditioner including a plurality of indoor units and a plurality of mode change units connected to the indoor units, via pipes, to control refrigerant flow to the indoor units such that cooling operation mode and heating operation mode of the respective indoor units are controlled, the method comprising: sequentially selecting the mode change units one by one; operating the indoor units connected to the selected mode change unit in one of the cooling operation mode and heating operation mode; and, when at least one of the indoor units connected to the selected mode change unit is not operated in the selected operation mode, determining that piping between the selected mode change unit and the unselected mode change units is abnormal.
  • the air conditioner inspection method further comprises: when outdoor temperature is low, and therefore, the heating operation is more effective than the cooling operation for inspection of the installation state of the air conditioner, operating the indoor units connected to the selected mode change unit in the heating operation mode; and, when the outdoor temperature is high, and therefore, the cooling operation is more effective than the heating operation for inspection of the installation state of the air conditioner, operating the indoor units connected to the selected mode change unit in the cooling operation mode.
  • the present invention provides a method of inspecting an air conditioner including a plurality of indoor units and a plurality of mode change units connected to the indoor units, via pipes, to control refrigerant flow to the indoor units such that cooling operation mode and heating operation mode of the respective indoor units are controlled, the method comprising: sequentially selecting the indoor units one by one for each of the mode change units to operate the selected indoor units, wherein the selected indoor units connected to the respective mode change units are simultaneously operated to inspect the pipe connection between the indoor units and the mode change units in batch mode.
  • the air conditioner inspection method further comprises: when outdoor temperature is low, and therefore, the heating operation is more effective than the cooling operation for inspection of the installation state of the air conditioner, operating the selected indoor units in blowing operation mode and operating the unselected indoor units in the heating operation mode; and, when the selected indoor units are normally operated in the blowing operation mode, determining that the pipe connection of the selected indoor units is normal.
  • the indoor units have heating valves and electronic expansion valves
  • the air conditioner inspection method further comprises: after closing the heating valves and the electronic expansion valves of the selected indoor units, operating the selected indoor units in the blowing operation mode; and, when the difference between inlet temperatures and outlet temperatures of heat exchangers of the selected indoor units is less than a predetermined level, determining that the pipe connection of the selected indoor units is normal.
  • the air conditioner inspection method further comprises: when outdoor temperature is high, and therefore, the cooling operation is more effective than the heating operation for inspection of the installation state of the air conditioner, operating the selected indoor units in the cooling operation mode and operating the unselected indoor units in blowing operation mode; and, when the selected indoor units are normally operated in the cooling operation mode, determining that the pipe connection of the selected indoor units is normal.
  • the air conditioner inspection method further comprises: operating the selected indoor units in the cooling operation mode; and, when the difference between inlet temperatures and outlet temperatures of heat exchangers of the selected indoor units is greater than a predetermined level, determining that the pipe connection of the selected indoor units is normal.
  • the indoor units have cooling valves and electronic expansion valves
  • the air conditioner inspection method further comprises: after closing the cooling valves and the electronic expansion valves of the unselected indoor units, operating the unselected indoor units in the blowing operation mode.
  • the present invention provides a method of inspecting an air conditioner including a plurality of indoor units having cooling and heating valves and a plurality of mode change units connected to the indoor units, via pipes, to control refrigerant flow to the indoor units such that cooling operation mode and heating operation mode of the respective indoor units are controlled, the method comprising: operating all the indoor units in one of the cooling operation mode and heating operation mode for a predetermined period of time to inspect whether the cooling and heating valves of the indoor units are normally operated; sequentially selecting the mode change units one by one, and operating all the indoor units connected to the selected mode change unit in one of the cooling operation mode and heating operation mode to inspect abnormal pipe connection between the selected mode change unit and the unselected mode change units; and sequentially selecting the indoor units one by one for each of the mode change units to operate the selected indoor units, wherein the selected indoor units connected to the respective mode change units are simultaneously operated to inspect the pipe connection between the indoor units and the mode change units in batch mode.
  • the air conditioner inspection method further comprises: when all the indoor units are normally operated in the selected operation mode, determining that all the valves corresponding to the selected operation mode among the cooling and heating valves of the indoor units are normally operated.
  • the air conditioner inspection method further comprises: when at least one of the indoor units connected to the selected mode change unit is not operated in the selected operation mode, determining that piping between the selected mode change unit and the unselected mode change units is abnormal.
  • the air conditioner inspection method further comprises: when outdoor temperature is low, and therefore, the heating operation is more effective than the cooling operation for inspection of the installation state of the air conditioner, operating the selected indoor units in blowing operation mode and operating the unselected indoor units in the heating operation mode; and, when the selected indoor units are normally operated in the blowing operation mode, determining that the pipe connection of the selected indoor units is normal.
  • the indoor units further have electronic expansion valves
  • the air conditioner inspection method further comprises: after closing the heating valves and the electronic expansion valves of the selected indoor units, operating the selected indoor units in the blowing operation mode; and, when the difference between inlet temperatures and outlet temperatures of heat exchangers of the selected indoor units is less than a predetermined level, determining that the pipe connection of the selected indoor units is normal.
  • the air conditioner inspection method further comprises: when outdoor temperature is high, and therefore, the cooling operation is more effective than the heating operation for inspection of the installation state of the air conditioner, operating the selected indoor units in the cooling operation mode and operating the unselected indoor units in blowing operation mode; and, when the selected indoor units are normally operated in the cooling operation mode, determining that the pipe connection of the selected indoor units is normal.
  • the air conditioner inspection method further comprises: operating the selected indoor units in the cooling operation mode; and, when the difference between inlet temperatures and outlet temperatures of heat exchangers of the selected indoor units is greater than a predetermined level, determining that the pipe connection of the selected indoor units is normal.
  • the indoor units further have electronic expansion valves
  • the air conditioner inspection method further comprises: after closing the cooling valves and the electronic expansion valves of the unselected indoor units, operating the unselected indoor units in the blowing operation mode.
  • FIG. 1 is a view illustrating a multi air conditioner according to the present invention.
  • the multi air conditioner is an air conditioner comprising a plurality of indoor units and at least one outdoor unitto perform cooling or heating through the indoor units.
  • the multi air conditioner comprises an outdoor unit 120, first to fourth indoor units 140a to 140d, and a mode change unit (MCU) 160.
  • MCU mode change unit
  • a four-way valve 124 changes the flow direction of refrigerant discharged from a compressor 122. Specifically, the four-way valve 124 changes the flow direction of high-temperature and high-pressure refrigerant such that the refrigerant discharged from a compressor flows to a main cooling-purpose electronic valve 186a and an outdoor heat exchanger 126 at the time of a main cooling operation and such that the refrigerant flows to the first to fourth indoor units 140a to 140d via a check valve 188 and the MCU 160 at the time of a main heating operation, through selective opening and closing of four 124a, 124b, 124c, and 124d.
  • the outdoor heat exchanger 126 performs heat exchange between outdoor air introduced into the outdoor unit 120 through an outdoor fan 102 and the refrigerant.
  • an outdoor electronic expansion valve 128 to expand the refrigerant
  • a liquid receiver to separate liquid-state refrigerant from the refrigerant
  • an accumulator 132 to separate liquid-state refrigerant from the refrigerant.
  • the refrigerant flow between the first to fourth indoor units 140a to 140d and the outdoor unit 120 is achieved through a high-pressure gas pipe 134, a low-pressure gas pipe 136,and a high-pressure liquid pipe 138.
  • the low-pressure gas pipe 136 is connected to the inlet side of the compressor 122 via the accumulator 132, and the high-pressure liquid pipe 138 is connected to the outdoor electronic expansion valve 128 via the liquid received 130.
  • a hot gas bypass valve 106 Between the inlet and outlet sides of the compressor 122 is connected a hot gas bypass valve 106 via an additional refrigerant pipe.
  • a bypass valve 182a and a check valve 182b, which are connected in parallel to the outdoor electronic expansion valve 128, are opened during the cooling operation. Consequently, some of the liquid refrigerant discharged from the outdoor heat exchanger 126 flows through the bypass valve 182a and the check valve 182b, i.e., the refrigerant bypasses the outdoor electronic expansion valve 128.
  • the bypass valve 182a and the check valve 182b are closed during the heating operation. Consequently, the refrigerant flows through the outdoor electronic expansion valve 128 such that the refrigerant is expanded.
  • a high-pressure branch pipe 184 which diverges from the high-pressure gas pipe 134.
  • the main cooling-purpose electronic valve 186a which is an opening and closing valve, and a check valve 186b to prevent backward-flow of the refrigerant from the high pressure gas pipe 134.
  • the check valve 186b to prevent backward-flow of the refrigerant from the high pressure gas pipe 134.
  • another check valve 188 to prevent backward-flow of the refrigerant.
  • the first to fourth indoor units 140a to 140d are connected in parallel to the outdoor unit 120.
  • the first to fourth indoor units 140a to 140d include first to fourth indoor heat exchangers 142a to 142d, first to fourth indoor electronic expansion valve 144a to 144d, and first to fourth temperature sensor pairs 174a-174a' to 174d-174d', respectively.
  • the first to fourth temperature sensor pairs 174a-174a' to 174d-174d' serve to detect the difference between the inlet temperatures and outlet temperatures of the first to fourth indoor heat exchangers 142a to 142d, respectively.
  • the MCU 160 serves to switch between the cooling and heating operations of the first to fourth indoor units 140a to 140d.
  • the MCU 160 includes first to fourth high-pressure gas branch pipes 166a to 166d, which diverge from the high-pressure gas pipe 134.
  • First to fourth heating-purpose electronic valves 162a to 162d are mounted on the first to fourth high-pressure gas branch pipes 166a to 166d, respectively.
  • the MCU 160 further includes first to fourth low-pressure gas branch pipes 168a to 168d, which diverge from the low-pressure gas pipe 136.
  • First to fourth cooling-purpose electronic valves 164a to 164d are mounted on the first to fourth low-pressure gas branch pipes 168a to 168d, respectively.
  • the first heating-purpose electronic valve 162a and the first cooling-purpose electronic valve 164a are connected to a first refrigerant pipe 170a, which is connected to the first indoor heat exchanger 142a.
  • the second to fourth heating-purpose electronic valves 162b to 162d and the second to fourth cooling-purpose electronic valves 164b to 164d are connected to second to fourth refrigerant pipes 170b to 170d in consecutive order.
  • FIG. 2 is a view illustrating a control system of the air conditioner shown in FIG. 1.
  • the outdoor unit 120 further includes an outdoor unit microcomputer 202 to control the components of the outdoor unit 120.
  • the first to fourth indoor units 140a to 140d further include first to fourth indoor unit microcomputers 206a to 206d to control components of the first to fourth indoor units 140a to 140d, respectively.
  • the MCU 160 further includes a MCU microcomputer 204 to control the first to fourth cooling-purpose electronic valves 164a to 164d and the first to fourth heating-purpose electronic valves 162a to 162d.
  • FIG. 3 is a flow chart illustrating an air conditioner inspection method according to the present invention.
  • a multi air conditioner which comprises at least one outdoor unit, a plurality of MCUs connected to the outdoor unit, and a plurality of indoor units connected to the respective MCUs, is installed first (300), and the indoor units are manually matched with the valves of the MCUs, respectively (301).
  • the heating operation it is determined whether the outdoor temperature is lower than the heating allowance temperature, and therefore, the heating operation is possible (302). If the outdoor temperature is lower than the heating allowance temperature, and therefore, the heating operation is possible, an inspection through the heating operation is performed (304). If the outdoor temperature is higher than the heating allowance temperature, and therefore, the heating operation is not possible, an inspection through the cooling operation is performed (306).
  • the installation state of the air conditioner is inspected through the heating operation (for example, in winter).
  • the temperature (i.e., the outdoor air) at the time of installing and inspecting the air conditioner is high, and therefore, the cooling operation is more effective than the heating operation for inspection of the installation state of the air conditioner, the installation state of the air conditioner is inspected through the cooling operation (for example, in summer).
  • FIG. 4 is a view illustrating installation errors inspected by the air conditioner inspection method of FIG. 3.
  • a plurality of MCUs #10 to #40 are connected to an outdoor unit #1, and a plurality of indoor units #11 - #14 to #41 - #44 are connected to the MCUs #10 to #40, respectively.
  • the constructions of the outdoor unit #1, the MCUs #10 to #40, and the indoor units #11 - #14 to #41 - #44 are identical to those of the outdoor unit, the MCU, and the indoor units shown in FIGS. 1 and 2.
  • the MCUs #10 to #40 control operation mode (the cooling or heating operation) of the indoor units connected thereto, respectively.
  • An installation error 402 shown in FIG. 4 indicates abnormal pipe connection between the MCUs #10 and #20.
  • the indoor unit #14, which is to be connected to the MCU #10, is connected to the MCU #20, and the indoor unit #21, which is to be connected to the MCU #20, is connected to the MCU #10.
  • the indoor unit #21 is operated.
  • the indoor unit #14 is operated.
  • Another installation error 404 shown in FIG. 4 indicates abnormal pipe connection in the MCU #30.
  • the two indoor units #32 and #33 among the indoor units #31 to #34 controlled by the MCU #30 are abnormally connected to the MCU #30.
  • the indoor unit #33 is operated.
  • the indoor unit #32 is operated.
  • the indoor units #41 - #44 is normally(correctly, in other words) connected to the MCU #40.
  • FIGS. 5A and 5B are a flow chart illustrating an installation state inspecting process through the heating operation among the air conditioner inspection method of FIG. 3.
  • the installation state inspecting process through the heating operation is performed, as shown in FIG. 5A, it is determined whether the outdoor temperature is higher than the cooling allowance temperature, even though the outdoor temperature is low, and therefore, the cooling operation is possible (502). If the outdoor temperature is lower than or equal to the cooling allowance temperature ('no' at Operation 502), all the indoor units are operated in heating operation mode for a predetermined period of time (504).
  • the heating operation is performed to raise the indoor temperature such that the cooling operation is possible, and then the installation states of the valves and pipes related to the cooling operation are inspected through the cooling operation. If the installation state of the air conditioner is inspected through the heating operation when the temperature is low, i.e., in winter, the installation states of the valves and pipes related to the heating operation can be inspected. However, the installation states of the valves and pipes related to the cooling operation cannot be inspected. For this reason, although the installation state of the air conditioner is inspected through the heating operation, the cooling operation is performed for the predetermined period of time such that the cooling operation is possible. Consequently, the installation states of the valves and pipes related to the cooling operation can be inspected.
  • the outdoor temperature is higher than the cooling allowance temperature ('yes' at Operation 502) or the cooling operation becomes possible through the heating operation (504), all the indoor units are operated in cooling operation mode for a predetermined period of time (506). If the cooling operations of some of the indoor units are not normally performed ('no' at Operation 508), it is determined that the installation or operation states of the cooling valves are not normal, and therefore, flow of the refrigerant for the cooling operation is not smooth, and registration of cooling valve errors is performed (510). If the cooling operations of all the indoor units are normally performed ('yes' at Operation 508), it is determined that the installation and operation states of the cooling valves are normal (512). In this way, the installation errors of the cooling valves can be inspected even when the inspection through the heating operation is performed.
  • the respective MCUs are sequentially selected (514), and all the indoor units connected to the selected MCU are operated in heating operation mode, to inspect abnormal pipe connection between the MCUs (516). If some or all of the indoor units connected to the selected MCU are not normally operated in heating operation mode ('no' at Operation 518), it is determined that piping between two or more MCUs is abnormal, and registration of abnormal pipe connection between MCUs is performed (520).
  • the abnormal pipe connection between the MCUs means that the indoor units, which are to be connected to one MCU, are connected to another MCU, as indicated by the installation error 402 shown in FIG.
  • the inspection of abnormal pipe connection in the respective MCUs is performed.
  • one indoor unit is selected for each of the MCUs (552).
  • the selected indoor units are operated in blowing operation mode while the heating valves and electronic expansion valves of the selected indoor units are closed (554), and the unselected indoor units are operated in heating operation mode (556).
  • the indoor unit #11 is selected for the MCU #10, the indoor unit #21 for the MCU #20, the indoor unit #31 for the MCU #30, and the indoor unit #41 for the MCU #40.
  • one indoor unit is selected for each of the MCUs such that the abnormal pipe connection inspections for the respective MCUs are simultaneously performed in batch mode. If only one MCU is selected from the plurality of MCUs to inspect the abnormal pipe connection, much time may be used for inspection depending on the number of MCUs and the number of indoor units connected to the respective MCUs. According to the present invention, however, all the MCUs are simultaneously inspected in batch mode, and therefore, inspection time is reduced.
  • the selected indoor units are not normally operated in the blowing operation mode, or the unselected indoor units are not normally operated in the heating operation mode ('no' at Operation 558), it is determined that the piping between the currently selected MCU and the indoor unit is abnormal, and registration of abnormal pipe connection in the selected MCU is performed (560).
  • the selected indoor units are normally operated in the blowing operation mode, there is little difference between the inlet temperatures and outlet temperatures of heat exchangers of the selected indoor units. Consequently, if the difference between the inlet and outlet temperatures of the heat exchangers of the selected indoor units is less than a predetermined level, it is determined that the indoor units are normally operated in the blowing operation mode, and the pipe connection is also normal.
  • the selected indoor unit is operated in the heating operation mode, not in the blowing operation mode (in this case, the difference between the inlet temperature and outlet temperature of the heat exchanger is greater than the predetermined level), and one of the unselected indoor units is operated in the blowing operation mode, it is determined that the pipe connection between the two indoor units is abnormal.
  • the piping inspection of the indoor units connected to the respective MCUs is continuously performed until the piping inspection is completed for all the indoor units ('no' at Operation 562). If the piping inspection is not completed for all the indoor units, the next one indoor unit is selected for each of the MCUs, and abnormal pipe connection inspection is performed through the blowing and heating operations (564).
  • the indoor unit #12 is selected for the MCU #10, the indoor unit #22 for the MCU #20, the indoor unit #32 for the MCU #30, and the indoor unit #42 for the MCU #40.
  • FIGS. 6A and 6B are a flow chart illustrating an installation state inspecting process through the cooling operation among the air conditioner inspection method of FIG. 3.
  • the installation state inspecting process through the cooling operation is performed, as shown in FIG. 6A, it is determined whether the outdoor temperature is lower than the heating allowance temperature, even though the outdoor temperature is high, and therefore, the heating operation is possible (602). If the outdoor temperature is higher than or equal to the heating allowance temperature ('no' at Operation 602), all the indoor units are operated in cooling operation mode for a predetermined period of time (604).
  • the cooling operation is performed to lower the indoor temperature such that the heating operation is possible, and then the installation states of the valves and pipes related to the heating operation are inspected through the heating operation. If the installation state of the air conditioner is inspected through the cooling operation when the temperature is high, i.e., in summer, the installation states of the valves and pipes related to the cooling operation can be inspected. However, the installation states of the valves and pipes related to the heating operation cannot be inspected. For this reason, although the installation state of the air conditioner is inspected through the cooling operation, the heating operation is performed for the predetermined period of time such that the heating operation is possible. Consequently, the installation states of the valves and pipes related to the heating operation can be inspected.
  • the outdoor temperature is lower than the cooling allowance temperature ('yes' at Operation 602) or the heating operation becomes possible through the cooling operation (604), all the indoor units are operated in heating operation mode for a predetermined period of time (606). If the heating operations of some of the indoor units are not normally performed ('no' at Operation 608), it is determined that the installation or operation states of the heating valves are not normal, and therefore, flow of the refrigerant for the heating operation is not smooth, and registration of heating valve errors is performed (610). If the heating operations of all the indoor units are normally performed ('yes' at Operation 608), it is determined that the installation and operation states of the heating valves are normal (612). In this way, the installation errors of the heating valves can be inspected even when the inspection through the cooling operation is performed.
  • the respective MCUs are sequentially selected (614), and all the indoor units connected to the selected MCU are operated in cooling operation mode, to inspect abnormal pipe connection between the MCUs (616). If some or all of the indoor units connected to the selected MCU are not normally operated in cooling operation mode ('no' at Operation 618), it is determined that piping between two or more MCUs is abnormal, and registration of abnormal pipe connection between MCUs is performed (620).
  • the abnormal pipe connection between the MCUs means that the indoor units, which are to be connected to one MCU, are connected to another MCU, as indicated by the installation error 402 shown in FIG.
  • the inspection of abnormal pipe connection in the respective MCUs is performed.
  • one indoor unit is selected for each of the MCUs (652).
  • the selected indoor units are operated in cooling operation mode (654), and the unselected indoor units are operated in blowing operation mode while the heating valves and electronic expansion valves of the selected indoor units are closed (656).
  • the indoor unit #11 is selected for the MCU #10, the indoor unit #21 for the MCU #20, the indoor unit #31 for the MCU #30, and the indoor unit #41 for the MCU #40.
  • one indoor unit is selected for each of the MCUs such that the piping inspections for the respective MCUs are simultaneously performed in batch mode. If only one MCU is selected from the plurality of MCUs to inspect the abnormal pipe connection, much time may be used for inspection depending on the number of MCUs and the number of indoor units connected to the respective MCUs. According to the present invention, however, all the MCUs are simultaneously inspected in batch mode, and therefore, inspection time is reduced.
  • the selected indoor units are not normally operated in the cooling operation mode, or the unselected indoor units are not normally operated in the blowing operation mode ('no' at Operation 658), it is determined that the piping between the currently selected MCU and the indoor unit is abnormal, and registration of abnormal pipe connection in the selected MCU is performed (660).
  • the unselected indoor units are normally operated in the blowing operation mode, there is little difference between the inlet temperatures and outlet temperatures of heat exchangers of the unselected indoor units. Consequently, if the difference between the inlet temperatures and outlet temperatures of the heat exchangers of the selected indoor units is less than a predetermined level, it is determined that the indoor units are normally operated in the blowing operation mode, and the pipe connection is also normal.
  • the selected indoor unit is operated in the blowing operation mode, it is determined that the pipe connection between the two indoor units is abnormal.
  • the piping inspection of the indoor units connected to the respective MCUs is continuously performed until the piping inspection is completed for all the indoor units ('no' at Operation 662). If the piping inspection is not completed for all the indoor units, the next one indoor unit is selected for each of the MCUs, and abnormal pipe connection inspection is performed through the cooling and blowing operations (664).
  • the indoor unit #12 is selected for the MCU #10, the indoor unit #22 for the MCU #20, the indoor unit #32 for the MCU #30, and the indoor unit #42 for the MCU #40.
  • the errors may be immediately informed to the installer or the administrator, and the other inspecting operations may be omitted.
  • the cooling valve error inspection is performed through the cooling operation while the abnormal pipe connection inspecting is performed through the heating operation in winter, and the heating valve error inspection is performed through the cooling operation while the abnormal pipe connection inspecting is performed through the cooling operation in summer. Consequently, the present invention has the effect of improving inspection efficiency.
  • the present invention has the effect of improving inspection efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)
EP05026903A 2005-07-22 2005-12-08 Inspektionsverfahren einer Klimaanlage Withdrawn EP1746364A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050066882A KR101195557B1 (ko) 2005-07-22 2005-07-22 공기 조화기의 검사 방법

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EP1746364A2 true EP1746364A2 (de) 2007-01-24
EP1746364A3 EP1746364A3 (de) 2010-09-15

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CN (1) CN1900678B (de)

Cited By (6)

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EP2634513A1 (de) * 2012-03-01 2013-09-04 Mitsubishi Electric Corporation Klimaanlage mit mehreren Einheiten
CN105334046A (zh) * 2015-12-14 2016-02-17 芜湖三花自控元器件有限公司 一种用于四通阀的高压换向装置及检测方法
FR3039636A1 (fr) * 2015-07-31 2017-02-03 Financiere Oppenot Installation de climatisation
JP2017122543A (ja) * 2016-01-07 2017-07-13 株式会社コロナ 冷暖房室内端末、冷暖房システム及び誤配線検出方法
EP3551946A4 (de) * 2017-01-10 2020-01-15 Samsung Electronics Co., Ltd. Klimaanlage, steuerungsvorrichtung dafür und verfahren zur steuerung davon
EP3839367A4 (de) * 2018-09-19 2022-01-26 Samsung Electronics Co., Ltd. Klimatisierungsvorrichtung und verfahren zur steuerung einer klimatisierungsvorrichtung

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CN104198203B (zh) * 2014-08-28 2017-10-31 广东美的制冷设备有限公司 一种空调器运行检测方法和装置
CN104534621A (zh) * 2014-12-18 2015-04-22 珠海格力电器股份有限公司 空调器及其控制方法和装置

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KR20050066882A (ko) 2003-12-27 2005-06-30 동부아남반도체 주식회사 플래시 메모리 소자의 제조 방법

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GB2230873B (en) * 1989-02-27 1993-10-06 Toshiba Kk Multi-system air conditioning machine
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KR20050066882A (ko) 2003-12-27 2005-06-30 동부아남반도체 주식회사 플래시 메모리 소자의 제조 방법

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2634513A1 (de) * 2012-03-01 2013-09-04 Mitsubishi Electric Corporation Klimaanlage mit mehreren Einheiten
JP2013181697A (ja) * 2012-03-01 2013-09-12 Mitsubishi Electric Corp マルチ形空気調和機
US9476623B2 (en) 2012-03-01 2016-10-25 Mitsubishi Electric Corporation Multiple-unit air conditioning apparatus
FR3039636A1 (fr) * 2015-07-31 2017-02-03 Financiere Oppenot Installation de climatisation
CN105334046A (zh) * 2015-12-14 2016-02-17 芜湖三花自控元器件有限公司 一种用于四通阀的高压换向装置及检测方法
JP2017122543A (ja) * 2016-01-07 2017-07-13 株式会社コロナ 冷暖房室内端末、冷暖房システム及び誤配線検出方法
EP3551946A4 (de) * 2017-01-10 2020-01-15 Samsung Electronics Co., Ltd. Klimaanlage, steuerungsvorrichtung dafür und verfahren zur steuerung davon
US11231216B2 (en) 2017-01-10 2022-01-25 Samsung Electronics Co., Ltd. Air conditioner, control device thereof, and method of controlling the same
EP3839367A4 (de) * 2018-09-19 2022-01-26 Samsung Electronics Co., Ltd. Klimatisierungsvorrichtung und verfahren zur steuerung einer klimatisierungsvorrichtung
US11994309B2 (en) 2018-09-19 2024-05-28 Samsung Electronics Co., Ltd. Air conditioner and method of controlling the same

Also Published As

Publication number Publication date
CN1900678A (zh) 2007-01-24
KR101195557B1 (ko) 2012-10-30
EP1746364A3 (de) 2010-09-15
CN1900678B (zh) 2010-08-18
KR20070012064A (ko) 2007-01-25

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