WO2018198397A1 - 空気調和機 - Google Patents

空気調和機 Download PDF

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Publication number
WO2018198397A1
WO2018198397A1 PCT/JP2017/035904 JP2017035904W WO2018198397A1 WO 2018198397 A1 WO2018198397 A1 WO 2018198397A1 JP 2017035904 W JP2017035904 W JP 2017035904W WO 2018198397 A1 WO2018198397 A1 WO 2018198397A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
indoor heat
air conditioner
freezing
indoor
Prior art date
Application number
PCT/JP2017/035904
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
拓哉 阿部
真和 粟野
幸範 田中
貴郎 上田
能登谷　義明
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=61158435&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018198397(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to ES201890016A priority Critical patent/ES2744324B2/es
Priority to CN201780003132.1A priority patent/CN109154444B/zh
Publication of WO2018198397A1 publication Critical patent/WO2018198397A1/ja

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • 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
    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • 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
    • F24F11/526—Indication arrangements, e.g. displays giving audible indications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle

Definitions

  • the present invention relates to an air conditioner.
  • Patent Document 1 describes an "air conditioner including a moisture applying means for causing water to adhere to the surface of the fin after heating operation". ing.
  • the above-mentioned water provision means makes water adhere to the fin surface of the indoor heat exchanger by performing the cooling operation after the heating operation.
  • Patent Document 1 does not describe the function of canceling the process of the water application means.
  • moisture-content provision means the drive noise of an air conditioner may be generated, or cold air may be blown out indoors. Therefore, it is desirable to avoid that the treatment by the hydration means is performed against the user's intention.
  • this invention makes it a subject to provide the air conditioner which can cancel washing
  • the present invention is characterized in that the control means cancels the freezing or condensation of the indoor heat exchanger, or the cooling operation after the heating operation based on a signal from a remote control or a portable terminal.
  • “cancellation” of freezing and the like (washing) of the indoor heat exchanger includes cancellation (cancellation) when freezing and the like are performed, as well as cancellation before freezing and the like.
  • the air conditioner which can cancel washing
  • the air conditioner concerning a 1st embodiment of the present invention is a flow chart which shows processing of a control part at the time of starting washing processing.
  • the air conditioner concerning a 2nd embodiment of the present invention is a flow chart which shows processing of a control part under washing processing.
  • the air conditioner concerning a 3rd embodiment of the present invention is a flow chart which shows processing of a control part under washing processing or after washing processing.
  • FIG. 1 is a front view of an indoor unit 10, an outdoor unit 30, and a remote control 40 provided in the air conditioner 100 according to the first embodiment.
  • the air conditioner 100 is a device that performs air conditioning by circulating a refrigerant in a refrigeration cycle (heat pump cycle). As shown in FIG. 1, the air conditioner 100 includes an indoor unit 10 installed indoors (air conditioned space), an outdoor unit 30 installed outdoors, and a remote control 40 operated by the user. There is.
  • the indoor unit 10 includes the communication unit 11.
  • the communication unit 11 performs predetermined communication with the remote control 40 by infrared communication or the like. For example, the communication unit 11 receives, from the remote control 40, signals such as an operation / stop command, a change of a set temperature, a change of an operation mode, and a setting of a timer. In addition, the communication unit 11 transmits the detected value of the room temperature and the like to the remote control 40.
  • the communication unit 11 can also communicate with a portable terminal 50 (see FIG. 4) such as a cellular phone, a smartphone, or a tablet.
  • the indoor unit 10 and the outdoor unit 30 are connected via a refrigerant pipe and connected via a communication line.
  • FIG. 2 is a longitudinal sectional view of the indoor unit 10.
  • the indoor unit 10 includes the indoor heat exchanger 12, the drain pan 13, the indoor fan 14, the housing base 15, the filters 16 and 16, and the front panel 17 in addition to the communication unit 11 (see FIG. 1) described above. And a left and right wind direction plate 18 and an up and down wind direction plate 19.
  • the indoor heat exchanger 12 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer tube 12 a and the indoor air.
  • the drain pan 13 receives water dripping from the indoor heat exchanger 12 and is disposed below the indoor heat exchanger 12. The water dropped to the drain pan 13 is discharged to the outside through a drain hose (not shown).
  • the indoor fan 14 is, for example, a cylindrical cross flow fan, and is driven by an indoor fan motor 14a (see FIG. 4).
  • the housing base 15 is a housing in which devices such as the indoor heat exchanger 12 and the indoor fan 14 are installed.
  • the filters 16, 16 are for removing dust from the air taken in through the air inlet h1 etc., and are installed on the upper side and the front side of the indoor heat exchanger 12.
  • the front panel 17 is a panel installed so as to cover the filter 16 on the front side, and can be pivoted to the front side with the lower end as an axis. The front panel 17 may not be rotated.
  • the left and right wind direction plate 18 is a plate-like member that adjusts the flow direction of the air blown out toward the room in the left and right direction.
  • the left and right wind direction plate 18 is disposed on the downstream side of the indoor fan 14 and is configured to rotate in the left and right direction by the left and right wind direction plate motor 23 (see FIG. 4).
  • the vertical wind direction plate 19 is a plate-like member that adjusts the flow direction of air blown out toward the room in the vertical direction.
  • the vertical wind direction plate 19 is disposed downstream of the indoor fan 14 and is configured to be vertically rotated by a vertical wind direction plate motor 24 (see FIG. 4).
  • the air sucked in through the air suction port h1 exchanges heat with the refrigerant flowing through the heat transfer pipe 12a, and the heat-exchanged air is guided to the blowoff air path h2. Then, the air flowing through the blowout air path h2 is guided in a predetermined direction by the left and right wind direction plates 18 and the up and down wind direction plates 19 and further blown out into the room through the air outlet h3.
  • FIG. 3 is an explanatory view showing the refrigerant circuit Q of the air conditioner 100.
  • the solid line arrow of FIG. 3 has shown the flow of the refrigerant
  • the broken line arrow in FIG. 3 indicates the flow of the refrigerant during the cooling operation.
  • the outdoor unit 30 includes a compressor 31, an outdoor heat exchanger 32, an outdoor fan 33, an outdoor expansion valve 34 (expansion valve), and a four-way valve 35.
  • the compressor 31 is a device that compresses a low-temperature low-pressure gas refrigerant and discharges it as a high-temperature high-pressure gas refrigerant by driving the compressor motor 31 a.
  • the outdoor heat exchanger 32 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer pipe (not shown) and the outside air fed from the outdoor fan 33.
  • the outdoor fan 33 is a fan that sends outside air to the outdoor heat exchanger 32 by the outdoor fan motor 33 a, and is installed near the outdoor heat exchanger 32.
  • the outdoor expansion valve 34 has a function of decompressing the refrigerant condensed by the “condenser” (one of the outdoor heat exchanger 32 and the indoor heat exchanger 12). The refrigerant decompressed in the outdoor expansion valve 34 is led to the “evaporator” (the other of the outdoor heat exchanger 32 and the indoor heat exchanger 12).
  • the four-way valve 35 is a valve that switches the flow path of the refrigerant according to the operation mode of the air conditioner 100. That is, during the cooling operation (see the broken arrow in FIG. 3), the compressor 31, the outdoor heat exchanger 32 (condenser), the outdoor expansion valve 34, and the indoor heat exchanger 12 (evaporator) are four-way valves.
  • the refrigerant circulates in the refrigeration cycle in the refrigerant circuit Q sequentially connected in an annular fashion via the reference numeral 35.
  • the compressor 31, the indoor heat exchanger 12 (condenser), the outdoor expansion valve 34, and the outdoor heat exchanger 32 (evaporator) are four-way valves.
  • the refrigerant circulates in the refrigeration cycle in the refrigerant circuit Q sequentially connected in an annular fashion via the reference numeral 35.
  • one of the "condenser” and the “evaporator” is the outdoor heat exchanger 32, and the other is the indoor heat exchanger 12.
  • FIG. 4 is a functional block diagram of the air conditioner 100.
  • the indoor unit 10 includes an environment detection unit 21, an indoor control circuit 22, a notification sound generation unit 25 (notification unit), and a display lamp 26 (notification unit), in addition to the above-described configuration.
  • the environment detection unit 21 has a function of detecting the state of the room (air conditioned space), and includes an indoor temperature sensor 21a and the like.
  • the indoor temperature sensor 21a is a sensor that detects the temperature in the room.
  • the detection value of each sensor including the indoor temperature sensor 21 a is output to the indoor control circuit 22.
  • the indoor control circuit 22 is configured to include electronic circuits such as a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and various interfaces. Then, the program stored in the ROM is read and expanded in the RAM, and the CPU executes various processing.
  • CPU central processing unit
  • ROM read only memory
  • RAM random access memory
  • the indoor control circuit 22 includes a storage unit 22 a and an indoor control unit 22 b.
  • the storage unit 22a stores, in addition to a predetermined program, the detection result of the environment detection unit 21, data received via the communication unit 11, and the like.
  • the indoor control unit 22b executes predetermined control based on the data stored in the storage unit 22a. The processing executed by the indoor control unit 22b will be described later.
  • the notification sound generation unit 25 has a function of generating a predetermined notification sound from the indoor unit 10 in which the indoor heat exchanger 12 is accommodated. That is, the notification sound generation unit 25 performs a predetermined notification regarding air conditioning by generating a notification sound such as a buzzer or a voice.
  • the display lamp 26 is, for example, an LED (Light Emitting Diode), and performs a predetermined notification regarding air conditioning by lighting (or blinking) in a predetermined color.
  • the sound generated by the notification sound generation unit 25 and the color of the display lamp 26 are stored in advance in the storage unit 22a in association with the notification content.
  • the outdoor unit 30 shown in FIG. 4 includes an outdoor control circuit 36 in addition to the above-described configuration.
  • the outdoor control circuit 36 includes electronic circuits such as a CPU, a ROM, a RAM, and various interfaces, and is connected to the indoor control circuit 22 via a communication line.
  • the outdoor control circuit 36 includes a storage unit 36 a and an outdoor control unit 36 b.
  • a plurality of sensors an outside air temperature sensor not shown in FIG. 4, a suction pressure sensor of the compressor 31, a discharge pressure sensor The detected values of the discharge temperature sensor etc. are stored.
  • the outdoor control unit 36b controls the compressor motor 31a, the outdoor fan motor 33a, the outdoor expansion valve 34, and the like based on the data stored in the storage unit 36a.
  • control unit K control means
  • the control unit K has a function of controlling the compressor 31 (see FIG. 3), the outdoor expansion valve 34, and the like based on a signal from the remote control 40 or the portable terminal 50.
  • the filter 16 for collecting dust and dirt is disposed on the upper side and the front side (air suction side) of the indoor heat exchanger 12 (see FIG. 2).
  • the filter 16 for collecting dust and dirt since fine dust and dirt may pass through the filter 16 and adhere to the indoor heat exchanger 12, it is desirable to periodically clean the indoor heat exchanger 12. Therefore, in the present embodiment, the water contained in the air taken into the indoor unit 10 is frozen by the indoor heat exchanger 12, and then the ice of the indoor heat exchanger 12 is melted. Since the dust and dirt adhering to the indoor heat exchanger 12 are washed away by this, the indoor heat exchanger 12 is cleaned. Such a series of processes is referred to as "cleaning process" of the indoor heat exchanger 12.
  • FIG. 5 is a flowchart of processing executed by the control unit K of the air conditioner 100 (see FIGS. 3 and 4 as appropriate). It is assumed that a predetermined air conditioning operation (cooling operation, heating operation, etc.) has been performed until "START” in FIG. In addition, it is assumed that the start condition of the cleaning process of the indoor heat exchanger 12 is satisfied at the time of “START” in FIG.
  • the “start condition” is, for example, a condition that a value obtained by integrating the execution time of the air conditioning operation from the end time of the previous cleaning process has reached a predetermined value.
  • step S101 the control unit K stops the air conditioning operation for a predetermined time (for example, several minutes).
  • the aforementioned predetermined time is a time for stabilizing the refrigeration cycle, and is set in advance.
  • the control unit K is reverse to the heating operation (same as the cooling operation) Control the four-way valve 35 so that the refrigerant flows.
  • the air conditioning operation is stopped for a predetermined time (S101) prior to freezing of the indoor heat exchanger 12 (S102).
  • step S101 may be omitted. This is because the direction in which the refrigerant flows during the cooling operation (at the time of “START” in FIG. 5) is the same as the direction in which the refrigerant flows during freezing of the indoor heat exchanger 12 (S102).
  • step S102 the control unit K freezes the indoor heat exchanger 12. That is, the control unit K causes the outdoor heat exchanger 32 to function as a condenser, and causes the indoor heat exchanger 12 to function as an evaporator. Thus, the water contained in the air taken into the indoor unit 10 can be frozen by the indoor heat exchanger 12.
  • predetermined range is a range in which the moisture contained in the air taken into the indoor unit 10 can be frozen by the indoor heat exchanger 12, and is set in advance.
  • control unit K may stop the indoor fan 14 or drive the indoor fan 14. May be
  • step S103 the control unit K thaws the indoor heat exchanger 12.
  • the control unit K causes the indoor heat exchanger 12 to function as a condenser and causes the outdoor heat exchanger 32 to function as an evaporator.
  • the high-temperature refrigerant flows through the indoor heat exchanger 12, which is a condenser, so the ice of the indoor heat exchanger 12 melts.
  • dust and dirt adhering to the indoor heat exchanger 12 are washed away.
  • the dust and the water containing the dust fall to the drain pan 13 (see FIG. 2), and are discharged to the outside through the drain hose (not shown).
  • the controller K may drive the indoor fan 14 while the indoor heat exchanger 12 is being thawed. By this, it can suppress that the temperature of the indoor heat exchanger 12 (condenser) becomes high too much.
  • the indoor heat exchanger 12 may be thawed by the control unit K performing the air blowing operation or keeping the stopped state of the device including the compressor 31 and the indoor fan 14 (S103). This is because the ice of the indoor heat exchanger 12 naturally thaws at room temperature even if the control unit K does not cause the indoor heat exchanger 12 to function as a condenser. By this, the power consumption required for thawing the indoor heat exchanger 12 can be reduced.
  • step S104 the control unit K dries the indoor heat exchanger 12.
  • the control unit K causes the indoor heat exchanger 12 to function as a condenser and causes the outdoor heat exchanger 32 to function as an evaporator.
  • the control unit K ends the series of "cleaning process" (END).
  • the indoor heat exchanger 12 may be dried by the control unit K performing a blowing operation (that is, driving the indoor fan 14 that feeds air to the indoor heat exchanger 12) (S104). Next, the operation at the time of starting the cleaning process of the indoor heat exchanger 12 will be described in detail.
  • FIG. 6 is a flowchart showing the process of the control unit K when starting the cleaning process (see FIGS. 3 and 4 as appropriate).
  • step S201 the control unit K determines whether the start condition of the cleaning process is satisfied.
  • the "cleaning process start condition" is, for example, a condition that a value obtained by integrating the air conditioning operation time from the end of the previous cleaning process has reached a predetermined value.
  • step S201: Yes the start condition of the cleaning process is satisfied in step S201 (S201: Yes)
  • the process of the control unit K proceeds to step S202.
  • the control unit K ends the series of processes (END).
  • step S202 the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26. That is, before starting the cleaning process such as freezing of the indoor heat exchanger 12, the control unit K notifies that the cleaning process is to be performed by the notification sound generation unit 25 and the display lamp 26. Thus, the user can be notified in advance that the cleaning process is to be started.
  • step S203 the control unit K sets a delay time (ie, standby time) until the cleaning process of the indoor heat exchanger 12 is started.
  • This delay time (for example, several seconds to several tens of seconds) is a time from when the user is notified in advance that cleaning processing is to be started in step S202 to when the cleaning operation is actually started, and is set in advance. There is.
  • step S204 the control unit K determines in advance whether or not the user is notified of the start of the cleaning process (S202), and then determines whether a predetermined delay time has elapsed. If the predetermined delay time has elapsed (S204: Yes), the process of the control unit K proceeds to step S205. The lighting of the display lamp 26 (S202) may be continued until the delay time elapses.
  • step S205 the control unit K executes the cleaning process (S101 to S104 in FIG. 5) of the indoor heat exchanger 12.
  • step S204 the process of the control unit K proceeds to step S206.
  • step S206 the control unit K determines whether or not there is an instruction to cancel the cleaning process by the operation of the remote control 40 or the portable terminal 50.
  • the processing of the control unit K returns to step S204.
  • step S207 the process of the control unit K proceeds to step S207.
  • step S207 the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26.
  • the user can be notified that the cleaning operation is actually canceled in response to the operation of the remote control 40 or the like.
  • the notification sound and the like (S207) be different from the notification sound and the like (S202) for notifying the cleaning process in advance. This is because the user can be informed in an easy-to-understand manner that the cleaning process is actually canceled.
  • step S208 the control unit K cancels the cleaning process of the indoor heat exchanger 12. That is, the control unit K cancels the cleaning process including the freezing of the indoor heat exchanger 12 based on the signal from the remote control 40 or the portable terminal 50. More specifically, when a predetermined cancel instruction is received from the remote control 40 or the portable terminal 50 until a predetermined delay time (predetermined time) elapses from the start of notification (S202) before the cleaning process (S204: No, S206: Yes), the control unit K does not perform the cleaning process including freezing of the indoor heat exchanger 12 (S208). Thus, the control unit K can appropriately cancel the cleaning process of the indoor heat exchanger 12 in accordance with the user's intention. Then, after performing the process of step S208, the control unit K ends the series of processes (END).
  • END the series of processes
  • control unit K notifies that the cleaning process is to be performed prior to the cleaning process of the indoor heat exchanger 12 (S202). Thus, the user can be informed in advance that the cleaning process is to be performed thereafter.
  • the control unit K cancels the cleaning process (S208) .
  • This can prevent the cleaning process from being performed against the user's intention.
  • the cleaning process of the indoor heat exchanger 12 can be performed according to the user's intention.
  • the second embodiment is different from the first embodiment in that processing in the case where there is a cancel instruction during cleaning processing of the indoor heat exchanger 12 (see FIG. 2) is described.
  • the other points (the configuration of the air conditioner 100 shown in FIGS. 1 to 4 and the flowchart of the cleaning process shown in FIG. 5) are the same as in the first embodiment. Therefore, only the parts different from the first embodiment will be described, and the descriptions of the overlapping parts will be omitted.
  • FIG. 7 is a flowchart showing the process of the control unit K during the cleaning process (see FIGS. 3 and 4 as appropriate).
  • the control unit K determines whether the cleaning process is being performed at the present time. The cleaning process is as described in the first embodiment (see FIG. 5).
  • the control unit K uses the notification sound generation unit 25 or the display lamp 26 to indicate that the cleaning process is in progress. You may make it alert
  • step S301 When the cleaning process is currently performed at step S301 in FIG. 7 (S301: Yes), the process of the control unit K proceeds to step S302. On the other hand, when the cleaning process has not been performed at the present time (S301: No), the control unit K ends the process (END).
  • step 302 the control unit K determines whether or not there is an instruction to cancel the cleaning process by the operation of the remote control 40 or the portable terminal 50. If there is no cancellation command for the cleaning process (S302: No), the control unit K continues the cleaning process and then ends the series of processes (END). On the other hand, when there is a cancel instruction of the cleaning process (S302: Yes), the process of the control unit K proceeds to step S303.
  • step S303 the control unit K determines whether a predetermined time has elapsed from the start of freezing of the indoor heat exchanger 12.
  • a predetermined time for example, several minutes
  • the indoor heat exchanger 12 functioning as an evaporator is sufficiently cooled (moisture contained in the air is cooled to the extent that it is frozen by the indoor heat exchanger 12) It is time and is preset.
  • step S303 When the predetermined time has elapsed from the start of freezing of the indoor heat exchanger 12 in step S303 (S303: Yes), the process of the control unit K proceeds to step S304. Specifically, control is performed when thawing (S103 in FIG. 5) or drying (S104 in FIG. 5) of the indoor heat exchanger 12 is being performed other than when freezing of the indoor heat exchanger 12 is in progress. The process of part K proceeds to step S304.
  • step S304 the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26.
  • the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26.
  • step S305 the control unit K dries the indoor heat exchanger 12. For example, if a predetermined time or more has passed during freezing (S303: Yes), ice may be adhered to the surface of the indoor heat exchanger 12. By evaporating the water after the ice melts at room temperature and further drying it (S305), the anti-bacterial and anti-fungal effect is exhibited. In addition, during thawing of the indoor heat exchanger 12 (S303: Yes), the ice of the indoor heat exchanger 12 melts, a part thereof drips into the drain pan 13 (see FIG. 2), and the rest is the indoor heat exchanger Adhere to 12 By drying the water attached in this manner (S305), the effects of anti-bacterial and anti-mildew are exhibited. Further, during the drying of the indoor heat exchanger 12 (S303: Yes), the drying is continued (S305) to keep the indoor heat exchanger 12 clean.
  • step S305 The contents of processing in step S305 are the same as step S104 (see FIG. 5) described in the first embodiment.
  • the control unit K dries the indoor heat exchanger 12 by performing a heating operation (making the indoor heat exchanger 12 function as a condenser).
  • step S306 the control unit K determines whether or not there is another cancel instruction. That is, the control unit K determines whether or not the predetermined cancel instruction has been received again from the remote controller 40 or the portable terminal 50 while the indoor heat exchanger 12 is drying after receiving the cancel instruction.
  • step S306: No When there is no cancel command again in step S306 (S306: No), the process of the control unit K returns to step S305. In this case, the drying of the indoor heat exchanger 12 is continued as it is. On the other hand, when there is a second cancel instruction in step S306 (S306: Yes), the process of the control unit K proceeds to step S307.
  • step S307 the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26. Accordingly, it is possible to notify the user that the cleaning process (that is, the drying of the indoor heat exchanger 12) is actually stopped (S308) according to the cancellation instruction of the cleaning process.
  • step S308 the control unit K stops the drying of the indoor heat exchanger 12. By this, even during the drying of the indoor heat exchanger 12, it is possible to appropriately reflect the user's intention to stop the process. After performing the process of step S308, the control unit K ends the series of processes (END).
  • step S303 When the predetermined time has not elapsed from the start of freezing of the indoor heat exchanger 12 in step S303 (S303: No), the processing of the control unit K proceeds to step S309.
  • step S309 the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26. Thus, the user can be notified that freezing of the indoor heat exchanger 12 is to be canceled (S310).
  • step S310 the control unit K cancels the freezing of the indoor heat exchanger 12.
  • the control unit K cancels the freezing of the indoor heat exchanger 12.
  • the control unit K cancels the freezing (S310). After performing the process of step S310, the control unit K ends the series of processes (END).
  • the control unit K stops the drying of the indoor heat exchanger 12 (S308).
  • the third embodiment is different from the first embodiment in that the process when the operation command of the air conditioning operation is received during the cleaning process of the indoor heat exchanger 12 is described.
  • the other points (the configuration of the air conditioner 100 shown in FIGS. 1 to 4 and the flowchart of the cleaning process shown in FIG. 5) are the same as in the first embodiment. Therefore, only the parts different from the first embodiment will be described, and the descriptions of the overlapping parts will be omitted.
  • FIG. 8 is a flowchart showing processing of the control unit K during or after the cleaning processing (see FIGS. 3 and 4 as appropriate).
  • the control unit K determines whether or not an operation command of air conditioning operation (heating operation, cooling operation, and the like) is received from the remote control 40 or the portable terminal 50 during the cleaning process of the indoor heat exchanger 12.
  • the process of the control unit K proceeds to step S403.
  • the process of the control unit K proceeds to step S402.
  • step S402 the control unit K determines whether or not the operation command of the air conditioning operation has been received within a predetermined time from the time of cancellation of the cleaning process of the indoor heat exchanger 12. If the operation command has not been received within the predetermined time since the cancellation of the cleaning process (S402: No), the control unit K ends the series of processes (END).
  • step S403 the process of the control unit K proceeds to step S403.
  • the cleaning process since the cleaning process is stopped halfway, the ice frozen in the indoor heat exchanger 12 may be melted thereafter and the surface of the indoor heat exchanger 12 may be wet.
  • step S403 the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26.
  • the control unit K causes the notification sound generation unit 25 to generate a predetermined notification sound, and turns on the display lamp 26.
  • the user can be notified that the operation command of the air conditioning operation has been received.
  • step S404 the control unit K stops (or cancels) the cleaning process of the indoor heat exchanger 12. That is, the control unit K stops each device including the compressor 31 and the indoor fan 14.
  • step S405 the control unit K determines whether or not a predetermined time has elapsed since the stop (or stop) of the cleaning process.
  • the “predetermined time” is a time required to dry the indoor heat exchanger 12 (to evaporate the water adhering to the surface) by continuing the stopped state of each device, and is set in advance.
  • step S405: Yes When the predetermined time has elapsed from the stop time of the cleaning process in step S405 (S405: Yes), the process of the control unit K proceeds to step S406. On the other hand, when the predetermined time has not elapsed since the stop of the cleaning process (S405: No), the process of the control unit K returns to step S404.
  • step S406 the control unit K sets an execution time for drying the indoor heat exchanger 12. For example, the control unit K sets an execution time of the heating operation or the blowing operation to dry the indoor heat exchanger 12.
  • step S407 the control unit K executes drying of the indoor heat exchanger 12.
  • the control unit K dries the indoor heat exchanger 12 by performing a heating operation or a blowing operation.
  • the indoor heat exchanger 12 may be dried by performing a heating operation and then performing a blowing operation.
  • step S408 the control unit K determines whether or not a predetermined execution time (set in S406) has elapsed from the start of the drying of the indoor heat exchanger 12. If the predetermined execution time has elapsed (S408: Yes), the process of the control unit K proceeds to step S409. In this case, the interior of the indoor unit 10 including the indoor heat exchanger 12 is sufficiently dried. On the other hand, if the predetermined execution time has not elapsed from the start of the drying of the indoor heat exchanger 12 (S408: No), the process of the control unit K returns to step S407.
  • step S409 the control unit K executes a predetermined air conditioning operation based on the operation command received in step S401 or S402. After performing the process of step S409, the control unit K ends the series of processes (END).
  • the control unit K stops the cleaning process and After drying of the indoor heat exchanger 12 is sequentially performed (S404 to S408), the air conditioning operation is performed (S409).
  • each embodiment demonstrated the process which wash
  • the indoor heat exchanger 12 may be cleaned by condensing the indoor heat exchanger 12.
  • the control unit K causes the evaporation temperature of the refrigerant to be lower than that of the normal cooling operation or the dehumidifying operation.
  • the control unit K calculates the dew point of the indoor air based on the detection value of the indoor temperature sensor 21a (see FIG. 4) and the detection value of the humidity sensor (not shown).
  • the controller K adjusts the degree of opening of the outdoor expansion valve 34 and the like so that the temperature of the indoor heat exchanger 12 is lower than the above-described dew point and higher than a predetermined freezing temperature.
  • the above-mentioned "freezing temperature” is a temperature at which the water contained in the room air starts to freeze in the room heat exchanger 12 when the temperature of the room air is lowered.
  • control unit K may dry the indoor heat exchanger 12. That is, when the indoor heat exchanger 12 is condensed, the control unit K causes the indoor heat exchanger 12 to function as a condenser, or performs a blowing operation to dry the indoor heat exchanger 12.
  • control unit K may perform freezing or condensation of the indoor heat exchanger 12 after the heating operation, the cooling operation, or the dehumidifying operation.
  • the indoor heat exchanger 12 can be cleaned after the air conditioning operation such as the heating operation, the cooling operation, the dehumidifying operation and the like.
  • the indoor heat exchanger 12 may be cleaned by performing a cooling operation after the heating operation. As a result, moisture adheres to the indoor heat exchanger 12 cooled with the refrigerant, and the indoor heat exchanger 12 is washed away by the moisture.
  • each embodiment demonstrated the process which performs the predetermined alerting
  • a display (not shown) for performing the above-mentioned notification may be provided in the indoor unit 10, and a predetermined pattern, characters or the like may be displayed on this display.
  • predetermined notification may be performed using the remote control 40 (see FIG. 4) or the portable terminal 50 (see FIG. 4). That is, the "notification means" may perform predetermined notification on air conditioning by performing predetermined display on the indoor unit 10, the remote controller 40, or the portable terminal 50.
  • a predetermined notification may be performed using one of the notification sound generation unit 25 and the display lamp 26, and the processing of the notification may be omitted as appropriate.
  • the notification sound generation unit 25 may not generate the notification sound in a predetermined time zone. For example, it is possible to prevent the user's comfort from being impaired by not generating the notification sound in the night time zone.
  • the control unit K make the upper and lower wind direction plates 19 upward than horizontal. This can prevent cold air from directly hitting the user.
  • 3rd Embodiment demonstrated the case where the control part K performed each process of step S406-S408 in order to dry the indoor heat exchanger 12, these processes were abbreviate
  • the control unit K cancels (stops) the cleaning process (S404). Then, the control unit K starts air conditioning operation based on the operation command after a predetermined time has elapsed after stopping the cleaning process. While the washing process is stopped and each device is stopped, the ice of the indoor heat exchanger 12 is naturally thawed and the water is evaporated. Thereby, thawing and drying of the indoor heat exchanger 12 can be performed.
  • the control unit K may perform the following processing. That is, the control unit K may start the air conditioning operation based on the operation command after the predetermined time has elapsed after stopping the cleaning process. This is because the ice of the indoor heat exchanger 12 is naturally thawed and the water is evaporated while the cleaning process is stopped and each device is stopped.
  • step S401 or S402 even when the conditions of step S401 or S402 are satisfied, when the operation command received by the control unit K is a heating operation command, the process of steps S406 to S408 (indoor heat exchange) Drying of the vessel 12 may be omitted. This is because the indoor heat exchanger 12 is dried by the subsequent heating operation.
  • control unit K may lower the evaporation temperature of the refrigerant when freezing or condensing the indoor heat exchanger 12 than the evaporation temperature of the refrigerant in the dehumidifying operation.
  • controller K may set the evaporation temperature of the refrigerant when freezing or condensation of the indoor heat exchanger 12 is below the freezing point.
  • each embodiment demonstrated the structure in which the indoor unit 10 (refer FIG. 3) and the outdoor unit 30 (refer FIG. 3) are provided 1 each, it does not restrict to this. That is, a plurality of indoor units connected in parallel may be provided, and a plurality of outdoor units connected in parallel may be provided.
  • each embodiment is described in detail for easy understanding of the present invention, and the present invention is not necessarily limited to one having all the configurations described. Moreover, it is possible to add, delete, and replace other configurations for part of the configurations of the respective embodiments. Further, the mechanisms and configurations described above indicate what is considered to be necessary for the description, and not all the mechanisms and configurations of the product are necessarily shown.
PCT/JP2017/035904 2017-04-28 2017-10-03 空気調和機 WO2018198397A1 (ja)

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FR3065792B1 (fr) 2021-01-29
JP2018189262A (ja) 2018-11-29
CN109154444A (zh) 2019-01-04
ES2744324R1 (es) 2020-02-25
ES2744324A9 (es) 2020-03-25
ES2744324A2 (es) 2020-02-24
FR3065792A1 (fr) 2018-11-02
MY168941A (en) 2019-01-10
CN109154444B (zh) 2020-01-07
TW201839325A (zh) 2018-11-01

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