EP1691139A2 - Checking Air Conditioning System Installation - Google Patents
Checking Air Conditioning System Installation Download PDFInfo
- Publication number
- EP1691139A2 EP1691139A2 EP05100920A EP05100920A EP1691139A2 EP 1691139 A2 EP1691139 A2 EP 1691139A2 EP 05100920 A EP05100920 A EP 05100920A EP 05100920 A EP05100920 A EP 05100920A EP 1691139 A2 EP1691139 A2 EP 1691139A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- cooling
- heating
- opened
- indoor units
- 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.)
- Granted
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 35
- 238000009434 installation Methods 0.000 title claims description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 97
- 238000001816 cooling Methods 0.000 claims abstract description 95
- 239000003507 refrigerant Substances 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000007689 inspection Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 8
- 238000004891 communication Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
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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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- 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
- 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
- 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
- F25B41/00—Fluid-circulation 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
- F25B49/00—Arrangement or mounting of control or 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
- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/007—Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
-
- 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
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
Abstract
Description
- In a first aspect, the present invention relates to a method for confirming correct installation of an air conditioning system, which comprises an outdoor unit and a plurality of indoor units, comprising operating a single indoor unit in heating mode, determining whether the temperature at the operated indoor unit changes by more than a predetermined amount and, if the temperature change does not exceed said predetermined amount, generating an indication that the air conditioning system has not been installed correctly.
- In a second aspect, the present invention also relates to a method for confirming correct installation of an air conditioning system, which comprises an outdoor unit and a plurality of indoor units, comprising operating a single indoor unit in cooling mode, determining whether the temperature at the operated indoor unit changes by more than a predetermined amount and, if the temperature change does not exceed said predetermined amount, generating an indication that the air conditioning system has not been installed correctly.
- Generally, a multi air conditioning system comprises an outdoor unit, a plurality of indoor units, connected in parallel and to the outdoor unit, communication lines connecting the outdoor unit with the indoor units, a power line, refrigerant pipes and electric valves installed in the refrigerant pipes.
- In the above conventional multi air conditioning system, when the system is initially installed, a worker connects the outdoor unit and the indoor units by the communication lines, the power line and the refrigerant pipes and inputs the number of refrigerant pipes connected to the indoor units using input means (for example, rotary switches) provided on the indoor units, thereby informing an outdoor unit microcomputer or indoor unit microcomputers of the number of refrigerant pipes connected to respective indoor units. However, the multi air conditioning system is disadvantageous in that the system comprises the plural refrigerant pipes and the plural indoor units connected to the refrigerant pipes and it is difficult to determine whether or not the refrigerant pipes and the indoor units are connected on the basis of the data regarding the number of refrigerant pipes input by a worker using the input means.
- In order to solve the above problem, a method for determining which indoor units are connected to which refrigerant pipes after a multi air conditioning system is installed has been proposed. KR-A-1991-0008349 discloses a method of inspecting the refrigerant pipes of the multi air conditioning system in detail.
- In order to detect which refrigerant pipe is connected to which indoor unit in the conventional multi air conditioning system, one of the electric valves is opened while the compressor is operating and the change in the temperature of the indoor unit, connected to the refrigerant pipe, in which the opened electric valve is installed, is observed. Then, the correspondence between the indoor unit and the refrigerant pipe, in which the opened electric valve is installed, is obtained through the above change in temperature of the indoor unit. By repeating the above process, the connections between the refrigerant pipes and the indoor units are determined.
- However, since the change in temperature of the indoor unit connected to the refrigerant pipe, in which the opened electric valve, is achieved slowly, in case that the number of the indoor units to be inspected is large, the above-described conventional method for inspecting the multi air conditioning system is disadvantageous in that it takes a long time to inspect the refrigerant pipes.
- Furthermore, since variation in the temperature of the indoor unit connected to the refrigerant pipe, in which the opened electric valve is installed, is not large, the above-described conventional method for inspecting the multi air conditioning system is disadvantageous in that the reliability of the inspection of the refrigerant pipes is reduced.
- A method, according to the first aspect of the present invention, is characterised in that all the indoor units are operated concurrently in cooling mode prior to operation said single indoor unit in heating mode.
- A method, according to the second aspect of the present invention, is characterised in that all the indoor units are operated concurrently in heating mode prior to operation said single indoor unit in cooling mode.
- Additional preferred and optional features of the present invention are set forth in claims 3 to 17 appended hereto.
- Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
- Figure 1 is a schematic view illustrating the refrigerant circuit of a multi air conditioning system according to the present invention;
- Figure 2 is a block diagram of the multi air conditioning system of Figure 1;
- Figure 3 is a flowchart illustrating a first method of discovering the pipe connections in the multi air conditioning system shown in Figures 1 and 2; and
- Figure 4 is a flowchart illustrating a second method of discovering the pipe connection in the multi air conditioning system shown in Figures 1 and 2.
- Referring to Figure 1, a multi air conditioning system according to the present invention comprises an
outdoor unit 10, first to fourthindoor units outdoor unit 10, and amode changer 30 for changing the operating mode of the first to fourthindoor units - The
outdoor unit 10 includes a four-way value 12 for setting the flow direction of the refrigerant discharged fromcompressors 11, anoutdoor heat exchanger 13 for achieving heat exchange by means of outdoor air entering into theoutdoor unit 10, an outdoorelectric valve 14 and areceiver tank 15 and anaccumulator 16 for separating the liquid and gaseous components of the refrigerant from each other. The refrigerant flows between the first to fourthindoor units outdoor unit 10 through a high-pressure gas pipe 17, a low-pressure gas pipe 18, and a high-pressure liquid pipe 19. - In the
outdoor unit 10, the low-pressure gas pipe 18 is connected to the inlets of thecompressors 11 through theaccumulator 16, theoutdoor heat exchanger 13 is connected in series to the outdoorelectric valve 14, and the high-pressure liquid pipe 19 is connected to the outdoorelectric valve 14 through thereceiver tank 15. Abypass valve 41 a, serving as a flow control valve, and anon-return valve 41 b are connected in parallel with the outdoorelectric valve 14. Liquid refrigerant, discharged from theoutdoor heat exchanger 13, passes through thebypass valve 41a and thenon-return valve 41b, bypassing the outdoorelectric valve 14, during cooling operation, and thebypass valve 41a is closed and the refrigerant passes through the outdoorelectric valve 14 during heating operation. - A high-
pressure branch pipe 42, which branches from the high-pressure gas pipe 17, is located between the four-way valve 12 and the high-pressure liquid pipe 19 and anelectric valve 43a, serving as a switching valve, and anon-return valve 43b, for preventing back flow of the refrigerant discharged from the high-pressure gas pipe 17, are installed in the high-pressure branch pipe 42. Another non-return valve 44, for preventing the back flow of refrigerant, is installed between the four-way valve 12 and the high-pressure liquid pipe 19. - The first to fourth
indoor units indoor heat exchangers electric valves indoor heat exchangers fourth temperature sensors indoor units mode changer 30. - The
mode changer 30 includes first tofourth heating valves gas branch pipes pressure gas pipe 17, and first tofourth cooling valves gas branch pipes pressure gas pipe 18. A valve set comprising thefirst heating valve 31a and thefirst cooling valve 32a is connected to a first refrigerant pipe 35a, connected to the firstindoor heat exchanger 20a, and further valve sets comprising a respective heating valve and a respective cooling valve from the second tofourth heating valves fourth cooling valves fourth refrigerant pipes - As shown in Figure 2, the
outdoor unit 10 further comprises anoutdoor unit microcomputer 23 for controlling theoutdoor unit 10. - The first to fourth
indoor units indoor unit microcomputers - The
mode changer 30 further includes a mode changer microcomputer 38 for controlling the first tofourth cooling valves fourth heating valves - Now, a first method of discovering the pipe connections of the multi air conditioning system shown in Figures 1 and 2 will be described with reference to Figure 3.
- When the multi air conditioning system is installed, a worker connects the
outdoor unit 10, theindoor units mode changer 30 using pipes, and inputs the numbers of the branch holes (not shown) of themode changer 30, connected to theindoor units - The branch holes are holes, formed through the case of the
mode changer 30, through which the pipes connecting theindoor units mode changer 30 and the number of branch holes is the same as the number of pipes passing through the branch holes and the number of heating valve-cooling valve sets, connected to the corresponding pipes. For example, if the first through hole is connected to the first indoor unit, the first pipe passes through the first branch hole and the first heating valve and the first cooling valve are connected to the first pipe. - Various means can be used as the above input means. For example, a rotary switch may installed in each indoor unit and used to indicate the number of the through hole, to which the corresponding indoor unit is connected, thereby allowing the corresponding indoor unit microcomputer to obtain the number of the through hole (i.e. the number of the heating valve-cooling valve set and the number of the pipe), to which the corresponding indoor unit is connected. Furthermore, when the indoor unit microcomputer obtains the number of the through hole, to which the corresponding indoor unit is connected, the indoor unit microcomputer sends data to the mode converter microcomputer so that the mode converter microcomputer learns the address/identity of the indoor unit connected to the heating valve-cooling valve set. In this embodiment of the present invention, the first
indoor unit 20a is connected to the first heating valve-first cooling valve set and the second to fourthindoor units - After the input of the data regarding the connections between the valves of the
mode changer 30 and the indoor units is completed, all of theindoor units heating valves mode changer 30 are closed and all of thecooling valves mode changer 30 are open (S52). - The temperatures around the indoor heat exchangers are measured by the
temperature sensors mode changer 30 stands by until the measured temperatures have stabilized (S54). When the temperatures sensed by thetemperature sensors first heating valve 31 a and closes thefirst cooling valve 32a (S56 and S58). - After a designated time from the above change of the opened and closed states of the
first heating valve 31 a and thefirst cooing valve 32a elapses, the increase of temperature around the firstindoor heat exchanger 21 a is calculated from the temperatures measured by thetemperature sensors - As described above, in the case that refrigerant in a low-temperature and low-pressure liquid state is supplied to the indoor unit, connected to the first heating valve-first cooling valve set, through the
first cooling valve 32a, and then thefirst cooling valve 32a is closed and refrigerant in a high-temperature and high-pressure gaseous state is supplied to the indoor unit, connected to the first heating valve-first cooling valve set, through thefirst heating valve 31a, the variation of temperatures sensed by thetemperature sensors - Thereafter, it is determined whether or not the indoor unit, the temperature of which has increased more than a reference range, is the first
indoor unit 20a (S62). In case that it is determined that the temperature of the firstindoor unit 20a is increased more than the reference range, it is determined that the pipe connection between the firstindoor unit 20a and the first heating valve-first cooling valve set is normal (S64). Here, the reference range serves to exclude the influence of factors, on the variation of temperatures, other than the change of the opened and closed states of the valves, and is set to a suitable value by experimentation. - If it is determined that the pipe connection between the first
indoor unit 20a and the first heating valve-first cooling valve set is normal, it is determined whether or not the inspection of all the pipe connections is completed (S66). If it is determined that the inspection of all of the pipe connections has not been completed, the opened and closed states of the next heating valve-cooling valve set are changed to determine whether or not the pipe connection between the next indoor unit and the next heating valve-first cooling valve set is normal (S68). - In the case that it is determined that the indoor unit, the temperature of which has increased more than the reference range, is not the first
indoor unit 20a in step S62, it is determined that the pipe connection between the firstindoor unit 20a and the first heating valve-first cooling valve set has failed, and a warning is given through a display (not shown) (S72). - In the case that it is determined that the pipe connection between the first
indoor unit 20a and the first heating valve-first cooling valve set has failed, the firstindoor unit 20a is not connected to the first heating valve-first cooling valve set and another indoor unit is connected to the first heating valve-first cooling valve set. - Now, a second method of inspecting the pipe connection in the multi air conditioning system shown in Figures 1 and 2 will be described with reference to Figure 4.
- When the multi air conditioning system is installed, a worker connects the
outdoor unit 10, theindoor units mode changer 30 using pipes, and inputs the numbers of the branch holes of themode changer 30, connected to theindoor units - After the input of the data regarding the pipe connection between the valves of the
mode changer 30 and theindoor units indoor units cooling valves mode changer 30 are closed and all of theheating valves mode changer 30 are opened (S82). - The temperatures around the indoor heat exchangers are measured by the
temperature sensors mode changer 30 stands by until the measured temperatures have stabilized (S84). When the temperatures sensed by thetemperature sensors first cooling valve 32a and closes thefirst heating valve 31a (S88) of the first heating valve-cooling valve set. - After a designated time from the above change of the opened and closed states of the
first heating valve 31 a and thefirst cooing valve 32a has elapsed, the decrease in temperature around the firstindoor heat exchanger 21a is calculated from the temperatures measured by thetemperature sensors - As described above, in the case that refrigerant in a high-temperature and high-pressure gaseous state is supplied to the indoor unit, connected to the first heating valve-cooling valve set, through the
first heating valve 31 a, and then thefirst heating valve 31a is closed and refrigerant in a low-temperature and low-pressure liquid state is supplied to the indoor unit, connected to the first heating valve-cooling valve set, through thefirst cooling valve 32a, the variations in the temperature sensed by thetemperature sensors - Thereafter, it is determined whether or not the indoor unit, the temperature of which has decreased more than a reference range, is the first
indoor unit 20a (S92). In the case that it is determined that the temperature of the firstindoor unit 20a has decreased more than the reference range, it is determined that the pipe connection between the firstindoor unit 20a and the first heating valve-first cooling valve set is normal (S94). Here, the reference range serves to exclude the influence of factors, on the variation of temperatures, other than the change of the opened and closed states of the valves, and is set to a suitable value by experimentation. - In the case that it is determined that the pipe connection between the first
indoor unit 20a and the first heating valve-cooling valve set is normal, it is determined whether or not the inspection of all the pipe connections has been completed (S96). In the case that it is determined that the inspection of all the pipe connections has not been completed, the opened and closed states of the next heating valve-cooling valve set are changed to find out whether or not the pipe connection between the next indoor and the next heating valve-first cooling valve set is normal (S98). - In the case that it is determined that the indoor unit, the temperature of which has decreased more than the reference range, is not the first
indoor unit 20a in step S92, it is determined that the pipe connection between the firstindoor unit 20a and the first heating valve-first cooling valve set has failed, and a warning is given through a display (not shown) (S100 and S102). - In the case that it is determined that the pipe connection between the first
indoor unit 20a and the first heating valve- cooling valve set has failed, the firstindoor unit 20a is not connected to the first heating valve-first cooling valve set and another indoor unit is connected instead to the first heating valve- cooling valve set. - As apparent from the above description, the present invention provides a multi air conditioning system, in which pipe connection is inspected using the variation of temperatures before and after the change of opened and closed states of heating valve-cooling valve sets, and a method for inspecting pipe connection of the multi air conditioning system, thereby shortening the time taken to detect the variation of temperatures and rapidly inspecting the pipe connection.
- Further, since the variation of temperatures before and after the change of opened and closed states of the heating valve-cooling valve sets is high, the multi air conditioning system of the present invention improves the reliability of inspecting the pipe connection.
- Although embodiments of the invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (17)
- A method for confirming correct installation of an air conditioning system, which comprises an outdoor unit (10) and a plurality of indoor units (20a, ..., 20d), the method comprising:operating a single indoor unit (20a) in heating mode;determining whether the temperature at the operated indoor unit (20a) changes by more than a predetermined amount; andif the temperature change does not exceed said predetermined amount, generating an indication that the air conditioning system has not been installed correctly,characterised in that all the indoor units (20a, ..., 20d) are operated concurrently in cooling mode prior to operation said single indoor unit (20a) in heating mode.
- A method for confirming correct installation of an air conditioning system, which comprises an outdoor unit (10) and a plurality of indoor units (20a, ..., 20d), the method comprising:operating a single indoor unit (20a) in cooling mode;determining whether the temperature at the operated indoor unit (20a) changes by more than a predetermined amount; andif the temperature change does not exceed said predetermined amount, generating an indication that the air conditioning system has not been installed correctly,characterised in that all the indoor units (20a, ..., 20d) are operated concurrently in heating mode prior to operation said single indoor unit (20a) in cooling mode.
- A method for inspecting pipe connection of a multi air conditioning system, which comprises a plurality of indoor units and a mode converter having a plurality of heating valve-cooling valve sets for controlling refrigerant flowing into the indoor units, comprising:changing opened and closed states of one heating valve-cooling valve set out of the plural heating valve-cooling valve sets during the operation of the system;detecting the indoor unit having a heat exchanger, the temperature of which varies corresponding to the change of the opened and closed states of the heating valve-cooling valve set; anddetermining, when the indoor unit having the heat exchanger, the temperature of which varies, matches with the heating valve-cooling valve set having the changed opened and closed states thereof, that the connection between the indoor unit having the heat exchanger, the temperature of which varies, and the heating valve-cooling valve set, having the changed the opened and closed states thereof, is normal.
- The method according to claim 1, further comprising:determining, when the indoor unit having the heat exchanger, the temperature of which varies, does not match with the heating valve-cooling valve set having the changed the opened and closed states thereof, that the connection between the indoor unit having the heat exchanger, the temperature of which varies, and the heating valve-cooling valve set, having the changed the opened and closed states thereof, fails.
- A method for inspecting pipe connection of a multi air conditioning system, which comprises a plurality of indoor units, a plurality of refrigerant pipes for supplying refrigerant, transmitted from an outdoor unit, to the indoor units or for supplying refrigerant, discharged from the indoor units, to the outdoor unit, and a mode converter including a plurality of cooling valves, opened in cooling modes of the indoor units, and a plurality of heating valves, opened in heating modes of the indoor units, for controlling the flow of the refrigerant pipes, comprising:operating compressors under the condition that all of the plural heating valves are closed and all of the plural cooling valves are opened;opening one heating valve of the plural heating valves and closing one cooling valve matching with the heating valve in a set; anddetermining, when the indoor unit having a heat exchanger, the variation of measured temperature of which is more than a reference range, matches with the heating valve-cooling valve set having the changed opened and closed states thereof, that the connection between the indoor unit and the heating valve-cooling valve set is normal.
- The method according to claim 5, further comprising:determining, when the indoor unit having the heat exchanger, the variation of temperature of which is more than the reference range, does not match with the heating valve-cooling valve set having the changed opened and closed states thereof, that the connection between the indoor unit and the heating valve-cooling valve set fails.
- The method according to claim 5, wherein the temperatures of the heat exchangers are respectively measured by temperature sensors installed in pipes connecting the plural indoor units to the mode converter.
- The method according to claim 7, wherein the temperatures of the heat exchangers are respectively measured before and after the opened and closed states of the heating valve-cooling valve set are changed.
- The method according to claim 5, wherein the variations of the temperatures of the heat exchangers are increased variables of the measured temperatures of the heat exchangers.
- The method according to claim 5, wherein the inspections of the pipe connections between the indoor units and the plural heating valve-cooling valve sets are sequentially performed.
- A method for inspecting pipe connection of a multi air conditioning system, which comprises a plurality of indoor units, a plurality of refrigerant pipes for supplying refrigerant, transmitted from an outdoor unit, to the indoor units or for supplying refrigerant, discharged from the indoor units, to the outdoor unit, and a mode converter including a plurality of cooling valves, opened in cooling modes of the indoor units, and a plurality of heating valves, opened in heating modes of the indoor units, for controlling the flow of the refrigerant pipes, comprising:operating compressors under the condition that all of the plural cooling valves are closed and all of the plural heating valves are opened;opening one cooling valve of the plural cooling valves and closing one heating valve matching with the cooling valve in a set; anddetermining, when the indoor unit having a heat exchanger, the variation of measured temperature of which is more than a reference range, matches with the heating valve-cooling valve set having the changed opened and closed states thereof, that the connection between the indoor unit and the heating valve-cooling valve set is normal.
- The method according to claim 11, further comprising:determining, when the indoor unit having the heat exchanger, the variation of temperature of which is more than the reference range, does not match with the heating valve-cooling valve set having the changed opened and closed states thereof, that the connection between the indoor unit and the heating valve-cooling valve set fails.
- The method according to claim 11, wherein the temperatures of the heat exchangers are respectively measured by temperature sensors installed in pipes connecting the plural indoor units to the mode converter.
- The method according to claim 13, wherein the temperatures of the heat exchangers are respectively measured before and after the opened and closed states of the heating valve-cooling valve set are changed.
- The method according to claim 11, wherein the variations of the temperatures of the heat exchangers are decreased variables of the measured temperatures of the heat exchangers.
- The method according to claim 11, wherein the inspections of the pipe connections between the indoor units and the plural heating valve-cooling valve sets are sequentially performed.
- A multi air conditioning system comprising:a plurality of indoor units;a plurality of refrigerant pipes for supplying refrigerant, transmitted from an outdoor unit, to the indoor units, or for supplying refrigerant, discharged from the indoor units, to the outdoor unit;a mode converter including a plurality of cooling valves, opened in cooling modes of the indoor units, and a plurality of heating valves, opened in heating modes of the indoor units, for controlling the flow of the refrigerant pipes;a plurality of temperature sensors for measuring temperatures of heat exchangers of the indoor units; anda controller for detecting one indoor unit having the heat exchanger, the temperature of which varies according to the change of the opened and closed states of the heating valve-cooling valve set for controlling the refrigerant flowing into said indoor unit, thus inspecting pipe connection between said indoor unit and said heating valve-cooling valve set.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040064243A KR101116679B1 (en) | 2004-08-16 | 2004-08-16 | A multi air conditioner system and a pipe connecting inspection method of the multi air conditioner system |
Publications (3)
Publication Number | Publication Date |
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EP1691139A2 true EP1691139A2 (en) | 2006-08-16 |
EP1691139A3 EP1691139A3 (en) | 2010-12-22 |
EP1691139B1 EP1691139B1 (en) | 2016-11-16 |
Family
ID=36080328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05100920.7A Active EP1691139B1 (en) | 2004-08-16 | 2005-02-09 | Checking Air Conditioning System Installation |
Country Status (4)
Country | Link |
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EP (1) | EP1691139B1 (en) |
JP (1) | JP3980601B2 (en) |
KR (1) | KR101116679B1 (en) |
CN (1) | CN100380058C (en) |
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KR101250550B1 (en) * | 2006-12-27 | 2013-04-09 | 엘지전자 주식회사 | Multi-air conditioner for heating and cooling operations at the same time and pipe setting method for the same |
JP5609337B2 (en) * | 2010-07-07 | 2014-10-22 | 株式会社富士通ゼネラル | Multi-type air conditioner |
CN102486327B (en) * | 2010-12-02 | 2016-04-27 | 乐金电子(天津)电器有限公司 | A kind of cold treatment method for temperature of air-conditioner pipe |
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- 2005-02-15 JP JP2005038303A patent/JP3980601B2/en not_active Expired - Fee Related
- 2005-02-17 CN CNB2005100090583A patent/CN100380058C/en not_active Expired - Fee Related
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EP2137466A1 (en) * | 2007-03-16 | 2009-12-30 | LG Electronics Inc. | Pipe probing method for air conditioner |
EP2137466A4 (en) * | 2007-03-16 | 2012-01-25 | Lg Electronics Inc | Pipe probing method for air conditioner |
US11231216B2 (en) * | 2017-01-10 | 2022-01-25 | Samsung Electronics Co., Ltd. | Air conditioner, control device thereof, and method of controlling the same |
Also Published As
Publication number | Publication date |
---|---|
KR101116679B1 (en) | 2012-06-13 |
EP1691139A3 (en) | 2010-12-22 |
EP1691139B1 (en) | 2016-11-16 |
CN1737443A (en) | 2006-02-22 |
JP2006057993A (en) | 2006-03-02 |
KR20060015862A (en) | 2006-02-21 |
CN100380058C (en) | 2008-04-09 |
JP3980601B2 (en) | 2007-09-26 |
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