EP3604953B1 - Klimaanlage - Google Patents

Klimaanlage Download PDF

Info

Publication number
EP3604953B1
EP3604953B1 EP18855110.5A EP18855110A EP3604953B1 EP 3604953 B1 EP3604953 B1 EP 3604953B1 EP 18855110 A EP18855110 A EP 18855110A EP 3604953 B1 EP3604953 B1 EP 3604953B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
indoor
indoor heat
control unit
air
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.)
Active
Application number
EP18855110.5A
Other languages
English (en)
French (fr)
Other versions
EP3604953A1 (de
EP3604953A4 (de
Inventor
Akitoshi Kawazoe
Satoru Nakamura
Kosuke Ohnishi
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.)
Hitachi Johnson Controls Air Conditioning Inc
Original Assignee
Hitachi Johnson Controls Air Conditioning Inc
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 Hitachi Johnson Controls Air Conditioning Inc filed Critical Hitachi Johnson Controls Air Conditioning Inc
Publication of EP3604953A1 publication Critical patent/EP3604953A1/de
Publication of EP3604953A4 publication Critical patent/EP3604953A4/de
Application granted granted Critical
Publication of EP3604953B1 publication Critical patent/EP3604953B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • 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
    • F24F11/43—Defrosting; Preventing freezing of indoor units
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • F24F2221/22—Cleaning ducts or apparatus

Definitions

  • the present invention relates to an air conditioner.
  • Patent Literature 1 describes, as a technique for bringing an indoor heat exchanger of an air conditioner into a clean state, an air conditioner "including a moisture providing section configured to cause water to adhere to a fin surface after air heating operation. Note that the water providing section causes water to adhere to the fin surface of the indoor heat exchanger by performing air cooling operation after the air heating operation.
  • Patent Literature 2 shows a self-cleaning method of an air conditioner heat exchanger.
  • the method comprises the steps that an air conditioner is controlled to enter a self-cleaning mode; the environmental temperature of the heat exchanger to be cleaned is detected, and the target evaporation temperature of the heat exchanger to be cleaned is determined according to the detected environmental temperature; the operation frequency of a compressor is adjusted according to the target evaporation temperature of the heat exchanger to be cleaned and the actual evaporation temperature, and the heat exchanger to be cleaned is controlled to frost; and after the surface of the heat exchanger to be cleaned is covered with a frost layer or an ice layer, the air conditioner is controlled to enter the defrosting mode of the heat exchanger to be cleaned.
  • Patent Literature 3 shows a self-cleaning heat exchanger which has a reversible fan located between two tube banks with a pressure switch connected thereto.
  • the fan rotates in one direction blowing across the first tube bank and drawing air over the second tube bank.
  • the pressure switch and fan are interconnected by two relays. When the refrigerant pressure in the tube banks exceeds the threshold pressure, the relay is closed and grounded and electric current flows through the relay. The change in direction of current flow will revers the polarity of the windings in the motor and thus the rotation of the motor and the fan thereby reversing air flow to remove debris form one tube bank while withdrawing heat from the other.
  • Patent Literature 1 even when the normal air cooling operation is performed after the air heating operation, there is a probability that the amount of water adhering to the indoor heat exchanger lacks for cleansing the indoor heat exchanger.
  • the present invention is an invention for solving the above-described problem, and is intended to provide an air conditioner configured so that an indoor heat exchanger can be properly cleansed.
  • the air conditioner of the present invention includes a refrigerant circuit configured such that refrigerant sequentially circulates in a refrigeration cycle through a compressor, a condenser, an expansion valve (e.g., an outdoor expansion valve 34), and an evaporator, and a control unit configured to control at least the compressor and the expansion valve.
  • a condenser or the evaporator is an outdoor heat exchanger
  • the other one of the condenser or the evaporator is an indoor heat exchanger.
  • the control unit is configured to cause the indoor heat exchanger to function as the evaporator, and is further configured to thaw out the indoor unit heat exchanger and to cause a blower fan (e.g., an indoor fan 14) to rotate backward during the freezing processing of freezing the indoor heat exchanger.
  • a blower fan e.g., an indoor fan 14
  • the air conditioner configured so that the indoor heat exchanger can be properly cleansed can be provided.
  • Fig. 1 is an external configuration view of an air conditioner 100 according to a first embodiment.
  • Fig. 1 illustrates a front view of an indoor unit 10, an outdoor unit 30, and a remote controller 40 included in the air conditioner 100.
  • the air conditioner 100 is equipment configured to perform air conditioning by circulation of refrigerant in a refrigeration cycle (a heat pump cycle).
  • a refrigeration cycle a heat pump cycle
  • the air conditioner 100 includes the indoor unit 10 placed inside a room (an air conditioning target space), the outdoor unit 30 placed outside the room, and the remote controller 40 operated by a user.
  • the indoor unit 10 includes a remote controller signal transmission/receiving unit 11.
  • the remote controller signal transmission/receiving unit 11 is configured to transmit/receive, via infrared communication etc., a predetermined signal between the remote controller signal transmission/receiving unit 11 and the remote controller 40.
  • the remote controller signal transmission/receiving unit 11 receives, from the remote controller 40, signals such as an operation/stop command, a set temperature change, an operation mode change, and a timer setting.
  • the remote controller signal transmission/receiving unit 11 transmits an indoor temperature detection value etc. to the remote controller 40.
  • the indoor unit 10 and the outdoor unit 30 are connected to each other through a refrigerant pipe and are connected to each other through a communication line.
  • Fig. 2 is a view for describing a longitudinal sectional configuration of the indoor unit 10 of the air conditioner 100 according to the first embodiment.
  • the indoor unit 10 includes an indoor heat exchanger 12, a drain pan 13, an indoor fan 14 (a blower fan), a housing base 15, filters 16, a front panel 17, a right-to-left wind direction plate 18, and an upper-to-lower wind direction plate 19.
  • the indoor heat exchanger 12 includes fins 12a and heat transfer pipes 12g.
  • the heat transfer pipes 12g are arranged in two lines in a zigzag pattern in an air flow direction. Heat is exchanged between refrigerant flowing in the heat transfer pipes 12g and indoor air.
  • the drain pan 13 is configured to receive water dripped from the indoor heat exchanger 12, and is arranged below the indoor heat exchanger 12. Note that the water dropped onto 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 in the direction (a clockwise direction, a forward rotation direction) of an arrow of the figure by an indoor fan motor 14a (see Fig. 4 ).
  • the housing base 15 is a housing in which equipment such as the indoor heat exchanger 12 and the indoor fan 14 is placed.
  • equipment such as the indoor heat exchanger 12 and the indoor fan 14 is placed.
  • a filter side (an upstream side) in the indoor heat exchanger 12 is a front surface 12f
  • an indoor fan 14 side (a downstream side) in the indoor heat exchanger 12 is a rear surface 12r.
  • the filters 16 are configured to remove grit and dust from air taken in through an air suction port h1 etc., and are placed on the upper and front sides of the indoor heat exchanger 12.
  • the front panel 17 is a panel placed to cover the front filter 16, and is rotatable forward about a lower end. Note that the front panel 17 may be configured not to rotate.
  • the right-to-left wind direction plate 18 is a plate-shaped member configured to adjust, in a right-to-left direction, a flow direction of air blown to the inside of the room.
  • the right-to-left wind direction plate 18 is arranged on the downstream side of the indoor fan 14, and is configured to rotate in the right-to-left direction by a right-to-left wind direction plate motor 21 (see Fig. 4 ).
  • the upper-to-lower wind direction plate 19 is a plate-shaped member configured to adjust, in an upper-to-lower direction, the flow direction of air blown to the inside of the room.
  • the upper-to-lower wind direction plate 19 is arranged on the downstream side of the indoor fan 14, and is configured to rotate in the upper-to-lower direction by an upper-to-lower wind direction plate motor 22 (see Fig. 4 ).
  • the air sucked through the air suction port h1 exchanges heat with the refrigerant flowing in the heat transfer pipes 12g, and the air subjected to heat exchange is guided to a blown air path h2.
  • the air flowing in the blown air path h2 is guided in a predetermined direction by the right-to-left wind direction plate 18 and the upper-to-lower wind direction plate 19, and is further blown to the inside of the room through an air blowing port h3.
  • Fig. 3 is a diagram for describing a refrigerant circuit Q of the air conditioner 100 according to the first embodiment. Note that solid arrows of Fig. 3 indicate the flow of refrigerant in air heating operation. Moreover, dashed arrows of Fig. 3 indicate the flow of refrigerant in air cooling operation. As illustrated in Fig. 3 , the outdoor unit 30 includes a compressor 31, an outdoor heat exchanger 32, an outdoor fan 33, an outdoor expansion valve 34 (an expansion valve), and a four-way valve 35.
  • the compressor 31 is equipment configured to compress low-temperature low-pressure gas refrigerant by driving of a compressor motor 31a to discharge the resultant refrigerant as high-temperature high-pressure gas refrigerant.
  • the outdoor heat exchanger 32 is a heat exchanger configured to exchange heat between refrigerant flowing in a heat transfer pipe (not shown) of the outdoor heat exchanger 32 and external air sent from the outdoor fan 33.
  • the outdoor fan 33 is a fan configured to send the external air to the outdoor heat exchanger 32 by driving of an outdoor fan motor 33a, and is placed in the vicinity of the outdoor heat exchanger 32.
  • the outdoor expansion valve 34 has the function of decompressing refrigerant condensed in a "condenser” (one of the outdoor heat exchanger 32 or the indoor heat exchanger 12). Note that the refrigerant decompressed in the outdoor expansion valve 34 is guided to an "evaporator" (the other one of the outdoor heat exchanger 32 or the indoor heat exchanger 12).
  • the four-way valve 35 is a valve configured to switch a refrigerant flow path according to the operation mode of the air conditioner 100. That is, in the air cooling operation in which refrigerant flows in the direction of the dashed arrows, the refrigerant circulates in the refrigeration cycle in the refrigerant circuit Q formed in such a manner that the compressor 31, the outdoor heat exchanger 32 (the condenser), the outdoor expansion valve 34, and the indoor heat exchanger 12 (the evaporator) are sequentially connected in an annular shape through the four-way valve 35.
  • the refrigerant circulates in the refrigeration cycle in the refrigerant circuit Q formed in such a manner that the compressor 31, the indoor heat exchanger 12 (the condenser), the outdoor expansion valve 34, and the outdoor heat exchanger 32 (the evaporator) are sequentially connected in an annular shape through the four-way valve 35.
  • Fig. 4 is a block diagram of control functions of the air conditioner 100 according to the first embodiment.
  • the indoor unit 10 illustrated in Fig. 4 includes, in addition to the above-described configuration, an image capturing unit 23, an environment detection unit 24, and an indoor control circuit 25.
  • the image capturing unit 23 is configured to capture an image of the inside of the room (the air conditioning target space), and includes an image capturing element such as a charge coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor. Based on an image capturing result of the image capturing unit 23, a person (a person staying in the room) inside the room is detected by the indoor control circuit 25.
  • a "person detection unit” configured to detect the person present in the air conditioning target space includes the image capturing unit 23 and the indoor control circuit 25.
  • the environment detection unit 24 has the function of detecting an indoor room state and an equipment state of the indoor unit 10, and includes an indoor temperature sensor 24a, a humidity sensor 24b, and an indoor heat exchanger temperature sensor 24c.
  • the indoor temperature sensor 24a is a sensor configured to detect the temperature of the inside of the room (the air conditioning target space).
  • the indoor temperature sensor 24a is placed on an air suction side with respect to the filters 16 (see Fig. 2 ). Thus, when the indoor heat exchanger 12 is frozen as described later, a detection error due to influence of thermal radiation of the indoor heat exchanger 12 can be reduced.
  • the humidity sensor 24b is a sensor configured to detect the humidity of air inside the room (the air conditioning target space), and is placed at a predetermined position of the indoor unit 10.
  • the indoor heat exchanger temperature sensor 24c is a sensor configured to detect the temperature of the indoor heat exchanger 12 (see Fig. 2 ), and is placed at the indoor heat exchanger 12. Detection values of the indoor temperature sensor 24a, the humidity sensor 24b, and the indoor heat exchanger temperature sensor 24c are output to the indoor control circuit 25.
  • the indoor control circuit 25 includes electronic circuits such as a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and various interfaces.
  • CPU central processing unit
  • ROM read only memory
  • RAM random access memory
  • a program stored in the ROM is read and loaded into the RAM, and various types of processing are executed by the CPU.
  • the indoor control circuit 25 includes a storage unit 25a and an indoor control unit 25b.
  • the storage unit 25a stores, in addition to the predetermined program, the image capturing result of the image capturing unit 23, the detection result of the environment detection unit 24, and data received via the remote controller signal transmission/receiving unit 11, for example.
  • the indoor control unit 25b executes predetermined control based on the data stored in the storage unit 25a. Note that processing executed by the indoor control unit 25b will be described later.
  • the outdoor unit 30 includes, in addition to the above-described configuration, an outdoor temperature sensor 36 and an outdoor control circuit 37.
  • the outdoor temperature sensor 36 is a sensor configured to detect the temperature (an external air temperature) of the outside of the room, and is placed at a predetermined spot of the outdoor unit 30. Note that although not shown in Fig. 4 , the outdoor unit 30 includes each sensor configured to detect the suction temperature, discharge temperature, discharge pressure, etc. of the compressor 31 (see Fig. 3 ). A detection value of each sensor including the outdoor temperature sensor 36 is output to the outdoor control circuit 37.
  • the outdoor control circuit 37 includes electronic circuits such as a CPU, a ROM, a RAM, and various interfaces, and is connected to the indoor control circuit 25 through a communication line.
  • the outdoor control circuit 37 includes a storage unit 37a and an outdoor control unit 37b.
  • the storage unit 37a stores, in addition to a predetermined program, the detection value of each sensor including the outdoor temperature sensor 36, for example.
  • the outdoor control unit 37b controls the compressor motor 31a (i.e., the compressor 31), the outdoor fan motor 33a, the outdoor expansion valve 34, etc.
  • the indoor control circuit 25 and the outdoor control circuit 37 will be referred to as a "control unit K.”
  • the filters 16 (see Fig. 2 ) configured to collect grit and dust are placed on the upper and front sides (the air suction side) of the indoor heat exchanger 12. However, in some cases, fine grit and dust pass through the filters 16, and adhere to the indoor heat exchanger 12.
  • the indoor heat exchanger 12 is preferably cleansed on a regular basis. For this reason, in the present embodiment, moisture contained in air taken in the indoor unit 10 is frozen in the indoor heat exchanger 12, and thereafter, ice of the indoor heat exchanger 12 is melted for cleansing the indoor heat exchanger 12. Such a series of processing is called "cleansing processing" of the indoor heat exchanger 12.
  • Fig. 5 is a flowchart of the cleansing processing executed by the control unit K of the air conditioner 100 according to the first embodiment. This flowchart will be described with reference to Figs. 3 and 4 , as necessary. Note that it is assumed that predetermined air conditioning operation (the air cooling operation, the air heating operation, etc.) is performed until "START" of Fig. 5 .
  • predetermined air conditioning operation the air cooling operation, the air heating operation, etc.
  • start condition for the cleansing processing of the indoor heat exchanger 12 is satisfied upon "START.”
  • This "start condition for the cleansing processing” is, for example, a condition (timing at which cleansing needs to be performed due to contamination adhering to a surface of the indoor heat exchanger 12) that an integrated value of an air conditioning operation execution time after the end of previous cleansing processing reaches a predetermined value.
  • a time period for performing the cleansing processing may be set by operation of the remote controller 40 by the user.
  • the control unit K stops the air conditioning operation for a predetermined time (e.g., several minutes).
  • the above-described predetermined time is a time for stabilizing the refrigeration cycle, and is set in advance. For example, when the air heating operation performed until "START" is interrupted and the indoor heat exchanger 12 is frozen (S102), the control unit K controls the four-way valve 35 such that refrigerant flows in a direction opposite to that in the air heating operation.
  • the air conditioning operation is stopped for the predetermined time (S101) prior to freezing (S102) of the indoor heat exchanger 12.
  • the control unit K may freeze the indoor heat exchanger 12 after the predetermined time has elapsed after the air conditioning operation has been stopped.
  • step S101 may be omitted. This is because the refrigerant flow direction during the air cooling operation (upon START) and the refrigerant flow direction during freezing (S102) of the indoor heat exchanger 12 are the same as each other.
  • the control unit K freezes the indoor heat exchanger 12 (the control unit K executes freezing processing). That is, the control unit K causes the indoor heat exchanger 12 to function as the evaporator, thereby forming frost on the surface of the indoor heat exchanger 12 from moisture contained in air taken in the indoor unit 10 and freezing the indoor heat exchanger 12. Moreover, during the freezing processing of freezing the indoor heat exchanger 12, the control unit K rotates the indoor fan 14 (the blower fan) backward (a counterclockwise direction in Fig. 2 ) to promote formation of frost on the fins close to the rear surface 12r (the downstream side, see Fig. 2 ) of the indoor heat exchanger 12, thereby freezing the indoor heat exchanger 12.
  • the indoor fan 14 the blower fan
  • the control unit K thaws out the indoor heat exchanger 12 (ice adhering to the surface of the indoor heat exchanger 12).
  • the control unit K causes the indoor heat exchanger 12 to function as the condenser to melt ice on the surface of the indoor heat exchanger 12, thereby thawing out the indoor heat exchanger 12. In this manner, grit and dust adhering to the indoor heat exchanger 12 are rinsed away.
  • thawing may be natural thawing or thawing by contact of wind formed by rotation of the indoor fan 14.
  • the control unit K dries the indoor heat exchanger 12.
  • the control unit K dries water on the surface of the indoor heat exchanger 12 by driving of the indoor fan 14. In this manner, the indoor heat exchanger 12 can be brought into a clean state.
  • the control unit K ends a series of processing (END).
  • Fig. 6 is a flowchart of the processing (S102 of Fig. 5 ) of freezing the indoor heat exchanger 12 (as necessary, see Figs. 3 and 4 ).
  • the control unit K makes a default setting.
  • the control unit K sets a backward rotation determination code N for the indoor fan 14 to 0 (zero), and brings the indoor fan 14 into a stop state.
  • the control unit K controls the four-way valve 35. That is, the control unit K controls the four-way valve 35 such that the outdoor heat exchanger 32 functions as the condenser and the indoor heat exchanger 12 functions as the evaporator. Note that in the case of performing the air cooling operation right before the "cleansing processing" (a series of processing illustrated in Fig. 5 ) is performed, a control device maintains the state of the four-way valve 35 at the step S102a.
  • the control unit K sets a freezing time. Specifically, the control unit K sets the freezing time based on the relative humidity of the indoor air (the air in the air conditioning target space). Note that the "freezing time” is a time for which predetermined control (S102c to S102e) for freezing the indoor heat exchanger 12 is continued. Of the freezing time of the present embodiment, a time (a backward rotation time) for rotating the indoor fan 14 backward may be set to a predetermined rate.
  • Fig. 7 is a map of a relationship between the relative humidity of the indoor air and the freezing time.
  • the horizontal axis of Fig. 7 is the relative humidity of the indoor air, and is detected by the humidity sensor 24b (see Fig. 4 ).
  • the vertical axis of Fig. 7 is the freezing time set corresponding to the relative humidity of the indoor air.
  • the control unit K shortens the freezing time for freezing the indoor heat exchanger 12 as the relative humidity of the indoor air increases. This is because a higher relative humidity of the indoor air results in a greater moisture amount in a predetermined volume of indoor air, and therefore, moisture easily adheres to the indoor heat exchanger 12.
  • the freezing time is set as described above so that a suitable amount of moisture necessary for cleansing the indoor heat exchanger 12 can adhere to the indoor heat exchanger 12 and can be further frozen.
  • the control unit K shortens the backward rotation time of the indoor fan 14 for freezing the indoor heat exchanger 12 as the relative humidity of the indoor air increases.
  • the indoor fan 14 When the relative humidity of the indoor air is equal to or higher than a predetermined value, the indoor fan 14 is not necessarily rotated backward. This is because when the relative humidity of the indoor air is equal to or higher than the predetermined value, if the indoor fan 14 is rotated backward, water droplets might be dropped from the front panel 17 due to excessive wetness of a rear surface of the front panel 17, and such a situation needs to be prevented.
  • control unit K may set the freezing time based on the absolute humidity of the indoor air. That is, the control unit K may shorten the freezing time as the absolute humidity of the indoor air increases.
  • the control unit K sets the rotation rate of the compressor 31. That is, based on an outdoor temperature as the detection value of the outdoor temperature sensor 36, the control unit K sets the rotation rate of the compressor motor 31a to drive the compressor 31.
  • Fig. 8 is a map of a relationship between the outdoor temperature and the rotation rate of the compressor 31.
  • the control unit K increases the rotation rate of the compressor motor 31a as the outdoor temperature increases, as illustrated in Fig. 8 . This is because for drawing heat from the indoor air in the indoor heat exchanger 12, sufficient heat radiation in the outdoor heat exchanger 32 is necessary accordingly.
  • the control unit K increases the rotation rate of the compressor motor 31a to increase the temperature and pressure of refrigerant discharged from the compressor 31.
  • the control unit K increases the rotation rate of the compressor motor 31a to increase the temperature and pressure of refrigerant discharged from the compressor 31.
  • the rotation rate of the compressor 31 is often controlled based on, e.g., the temperature of refrigerant discharged from the compressor 31.
  • the indoor heat exchanger 12 when the indoor heat exchanger 12 is frozen, the temperature of refrigerant discharged from the compressor 31 tends to be lower than that of the normal air conditioning operation, and therefore, the outdoor temperature is used as another parameter.
  • the control unit K adjusts the opening degree of the outdoor expansion valve 34.
  • the opening degree of the outdoor expansion valve 34 is preferably lower than that of the normal air cooling operation.
  • the control unit K determines whether or not the temperature TE of the indoor heat exchanger 12 is within a predetermined range (T1 ⁇ TE ⁇ T2).
  • the "predetermined range” is a range suitable for freezing, in the indoor heat exchanger 12, moisture contained in air taken in the indoor unit 10, and is set in advance.
  • the processing of the control unit K returns to the step S102e.
  • the control unit K further decreases the opening degree of the outdoor expansion valve 34 (S102e).
  • the control unit K adjusts the opening degree of the outdoor expansion valve 34 such that the temperature TE of the indoor heat exchanger 12 falls within the predetermined range.
  • Fig. 9 is a graph for describing one example of a temporal change in the temperature TE of the indoor heat exchanger 12.
  • the horizontal axis of Fig. 9 is a time elapsed after "START" of Fig. 6 .
  • the vertical axis of Fig. 9 is the temperature TE (the detection value of the indoor heat exchanger temperature sensor 24c: see Fig. 4 ) of the indoor heat exchanger 12.
  • the predetermined range F in which the temperature is lower than 0°C is a temperature range as a reference for determination of the step S102f (see Fig. 6 ), and is set in advance as described above.
  • the temperature of the indoor heat exchanger 12 gradually decreases as the "time elapsed" after the start of the predetermined control of freezing the indoor heat exchanger 12 increases.
  • an elapsed time t A is exceeded, the temperature of the indoor heat exchanger 12 falls within the predetermined range F.
  • the control unit K starts backward rotation of the indoor fan 14 at a time point t21 at which the temperature TE of the indoor heat exchanger 12 reaches equal to or lower than a predetermined temperature (equal to or lower than T2).
  • a predetermined temperature equal to or lower than T2
  • the control unit K rotates the indoor fan 14 backward between the time point t21 and a time point t22 so that the rear surface 12r (see Fig. 2 ) of the indoor heat exchanger 12 can be also sufficiently frozen.
  • step S102f of Fig. 6 in a case where the temperature TE of the indoor heat exchanger 12 falls within the predetermined range (S102f: Yes), the processing of the control unit K proceeds to a step S102g.
  • the control unit K determines whether or not the backward rotation determination code N of the indoor fan 14 is 1.
  • the backward rotation determination code N is not 1 (S102g: No)
  • the indoor fan 14 is rotated backward at a step S102h, and the processing proceeds to a step S102i.
  • the backward rotation determination code N is 1 (S102g: Yes)
  • the processing of the control unit K proceeds to a step S102k.
  • the control unit K determines whether or not the backward rotation time (a period between the time points t21 to t22) of the indoor fan 14 has elapsed.
  • the processing of the control unit K returns to the step S102h.
  • the processing of the control unit K proceeds to a step S102j.
  • control unit K stops the indoor fan 14, and sets the backward rotation determination code N of the indoor fan 14 to 1.
  • the processing of the control unit K proceeds to the step S102k.
  • the control unit K determines whether or not the freezing time set at the step S102c has elapsed. In a case where a predetermined freezing time has not elapsed after "START" (S102k: No), the processing of the control unit K returns to the step S102d. On the other hand, in a case where the predetermined freezing time has elapsed after "START" (S102k: Yes), the control unit K ends a series of processing for freezing the indoor heat exchanger 12 (END).
  • the determination processing of the step S102f is not necessarily performed based on the time elapsed after the "START" of Fig. 6 , but is performed based on a time (a time elapsed after the time point t21 illustrated in Fig. 9 ) elapsed after the temperature TE of the indoor heat exchanger 12 has fallen within the predetermined range F.
  • control unit K preferably does not perform freezing of the indoor heat exchanger 12 in a case where the outdoor temperature is below zero. This is for preventing freezing of a great amount of dropped water due to thawing of the indoor heat exchanger 12 in the drain hose (not shown) and preventing interference with water discharge through the drain hose.
  • Fig. 10 is a chart for describing drive states of the compressor 31 and the indoor fan 14.
  • the horizontal axis of Fig. 10 is a time point.
  • the vertical axis of Fig. 10 indicates a drive state of ON/OFF of the compressor 31 and a drive state of ON/OFF of the indoor fan 14.
  • the predetermined air conditioning operation is performed until a time point t1, and the compressor 31 and the indoor fan 14 are driven (i.e., in an ON state). Thereafter, the compressor 31 and the indoor fan 14 are stopped between the time points t1 to t2 (the step S101 of Fig. 5 ).
  • the indoor fan 14 is stopped between the time points t2 to t21, and is driven in a backward rotation direction between the time points t21 to t22. Then, the indoor fan 14 is stopped between the time points t22 to t3. As illustrated in Fig. 10 , an effect in the case of rotating the indoor fan 14 backward will be described with reference to Figs. 11A and 11B . Note that processing after the time point t3 will be described later.
  • Fig. 11A is a schematic view of a frost state during the freezing processing in a case where the indoor fan 14 is in the stop state.
  • Fig. 11B is a schematic view of a frost state during the freezing processing in a case where a backward rotation state and the stop state of the indoor fan 14 are combined.
  • the indoor fan 14 is rotated backward during the freezing processing of the indoor heat exchanger 12, and accordingly, the amount of frost adhering to the rear surface 12r side of the indoor heat exchanger 12 is increased. Contamination can be rinsed way by water generated upon melting of the frost, and the cleanness of the entirety of the indoor heat exchanger can be held.
  • control unit K may open the upper-to-lower wind direction plate 19 (see Fig. 2 ) upon backward rotation of the indoor fan 14. With this configuration, the amount of wind upon backward rotation of the indoor fan 14 can be increased, and the amount of adhering frost can be increased.
  • Fig. 12 is a flowchart of the processing (S103 of Fig. 5 ) of thawing out the indoor heat exchanger 12 (as necessary, see Figs. 3 and 4 ).
  • the control unit K executes a series of processing illustrated in Fig. 12 after the indoor heat exchanger 12 has been frozen by the processing of the step S102 (see Fig. 6 ).
  • the control unit K determines whether or not an indoor temperature (the temperature of the air conditioning target space) is equal to or higher than a predetermined value.
  • This predetermined value is a threshold as a reference for determination on whether or not the indoor heat exchanger 12 functions as the condenser, and is set in advance.
  • the control unit K ends the processing of thawing out the indoor heat exchanger 12 (END).
  • END the indoor heat exchanger 12
  • the four-way valve 35 is controlled as in the air heating operation. This is because in a case where the indoor temperature is equal to or higher than the predetermined value, a thermal load on a condensation side of the refrigeration cycle becomes too much and a balance with an evaporation side is lost. Moreover, the reason is that in a case where the indoor temperature is relatively high, ice on the indoor heat exchanger 12 is naturally melted as time proceeds.
  • processing after a step S103b is a control method of a variation.
  • the control unit K controls the four-way valve 35. That is, the control unit K controls the four-way valve 35 such that the indoor heat exchanger 12 functions as the condenser and the outdoor heat exchanger 32 functions as the evaporator. That is, the control unit K controls the four-way valve 35 as in the air heating operation.
  • the control unit K closes the upper-to-lower wind direction plate 19 (see Fig. 2 ). This can prevent water droplets from flowing into the room together with air even when the indoor fan 14 is subsequently driven (S103d).
  • the control unit K drives the indoor fan 14. Accordingly, air is taken in through the air suction port h1 (see Fig. 2 ), and the taken air further leaks to the inside of the room through, e.g., a clearance between the upper-to-lower wind direction plate 19 and the front panel 17. This can suppress an excessive increase in the temperature of the indoor heat exchanger 12 (the condenser).
  • the control unit K sets the rotation rate of the compressor 31 to a predetermined value, and drives the compressor 31.
  • the control unit K adjusts the opening degree of the outdoor expansion valve 34.
  • the compressor 31 and the outdoor expansion valve 34 are controlled as necessary as described above, and therefore, high-temperature refrigerant flows through the indoor heat exchanger 12 as the condenser. As a result, ice on the indoor heat exchanger 12 is melted at once, and therefore, grit and dust adhering to the indoor heat exchanger 12 are rinsed away. Then, water containing the grit and the dust is dropped onto the drain pan 13 (see Fig. 2 ), and is discharged to the outside through the drain hose (not shown).
  • the control unit K determines whether or not a predetermined time has elapsed after "START" of Fig. 11 .
  • the predetermined time is a time necessary for thawing out the indoor heat exchanger 12, and is set in advance.
  • the processing of the control unit K returns to the step S103f.
  • the control unit K ends a series of processing for thawing out the indoor heat exchanger 12 (END).
  • the compressor 31 and the indoor fan 14 may be maintained in the stop state as illustrated in the time chart (the time points t3 to t4) of Fig. 10 .
  • the time chart the time points t3 to t4 of Fig. 10 .
  • ice on the indoor heat exchanger 12 is naturally melted at room temperature without the indoor heat exchanger 12 functioning as the condenser.
  • power consumption necessary for thawing of the indoor heat exchanger 12 can be reduced.
  • water droplets adhering to the inside of the upper-to-lower wind direction plate 19 can be reduced.
  • Fig. 13 is a flowchart of the processing (S104 of Fig. 5 ) of drying the indoor heat exchanger 12.
  • the control unit K executes a series of processing illustrated in Fig. 12 after the indoor heat exchanger 12 has been unfrozen by the processing (see Fig. 11 ) of the steps S103a to S103g.
  • the control unit K maintains the drive states of the four-way valve 35, the compressor 31, the indoor fan 14, etc. That is, the control unit K controls, as in thawing of the indoor heat exchanger 12, the four-way valve 35 such that the indoor heat exchanger 12 serves as the condenser, and continuously drives the compressor 31, the indoor fan 14, etc. Since the control similar to that of the air heating operation is performed as described above, high-temperature refrigerant flows in the indoor heat exchanger 12, and air is taken in the indoor unit 10. As a result, water adhering to the indoor heat exchanger 12 is evaporated.
  • the control unit K determines whether or not a predetermined time has elapsed after the processing of the step S104a has been started. In a case where the predetermined time has not elapsed (S104b: No), the processing of the control unit K returns to the step S104a. On the other hand, in a case where the predetermined time has elapsed (S104b: Yes), the processing of the control unit K proceeds to a step S104c.
  • the control unit K executes air blowing operation. That is, the control unit K stops the compressor 31, and drives the indoor fan 14 at a predetermined rotation rate. With this configuration, the inside of the indoor unit 10 is dried, and an antibacterial/antifungal effect is provided.
  • the upper-to-lower wind direction plate 19 may be closed or opened.
  • the control unit K determines whether or not a predetermined time has elapsed after the processing of the step S104c has been started. In a case where the predetermined time has not elapsed (S104d: No), the processing of the control unit K returns to the step S104c. On the other hand, in a case where the predetermined time has elapsed (S104d: Yes), the control unit K ends a series of processing of drying the indoor heat exchanger 12 (END).
  • air blowing (S104c of Fig. 12 ) is performed at time points t5 to t6 after air heating (S104a of Fig. 12 ) has been performed at the time points t4 to t5 (after operation in the same refrigerant flow as that of air heating has been performed). Air heating and air blowing are sequentially performed as described above so that the indoor heat exchanger 12 can be efficiently dried.
  • control unit K causes the indoor heat exchanger 12 to function as the evaporator, and the indoor fan 14 (the blower fan) to rotate backward during the freezing processing of freezing the indoor heat exchanger 12.
  • the amount of frost adhering to the rear surface 12r (see Fig. 2 ) side of the indoor heat exchanger 12 can be increased.
  • the amount of frost adhering to the front surface 12f (see Fig. 2 ) side of the indoor heat exchanger 12 tends to be greater than that on the rear surface 12r (see Fig. 2 ).
  • the amount of frost adhering to the indoor heat exchanger 12 can be equalized.
  • the indoor fan 14 takes, during the freezing processing between the time points t2 to t3, a pattern of the stop state, the backward rotation state, and the stop state, but the present invention is not limited to above.
  • the pattern may be a pattern of the backward rotation state and the stop state or a pattern of the stop state and the backward rotation state.
  • the control unit K opens the upper-to-lower wind direction plate 19 in the case of rotating the indoor fan 14 backward. With this configuration, the air amount is increased so that the amount of frost adhering to the rear surface 12r (see Fig. 2 ) side of the indoor heat exchanger 12 can be increased.
  • the control unit K performs both the freezing processing of stopping the indoor fan 14 and the freezing processing of rotating the indoor fan 14 backward.
  • the amount of adhering frost can be equalized between the front surface 12f (see Fig. 2 ) side and the rear surface 12r (see Fig. 2 ) side of the indoor heat exchanger 12.
  • the control unit K is configured such that the freezing processing time for stopping the indoor fan 14 (e.g., an added-up time of the time between the time points t2 to t21 and the time between the time points t22 to t3 in Fig. 10 ) is longer than the freezing processing time for rotating the indoor fan 14 backward (e.g., the time between the time points t21 to t22 in Fig. 10 ).
  • the freezing processing time for stopping the indoor fan 14 e.g., an added-up time of the time between the time points t2 to t21 and the time between the time points t22 to t3 in Fig. 10
  • the freezing processing time for rotating the indoor fan 14 backward e.g., the time between the time points t21 to t22 in Fig. 10 .
  • the control unit K starts backward rotation of the indoor fan 14 after the temperature of the indoor heat exchanger 12 has reached equal to or lower than the predetermined temperature (e.g., equal to or lower than T2 of Fig. 9 ). With this configuration, the backward rotation time of the indoor fan 14 can be shortened.
  • the control unit K repeats stopping and backward rotation of the indoor fan 14 during the freezing processing. With this configuration, the amount of adhering frost can be equalized between the front surface 12f (see Fig. 2 ) side and the rear surface 12r (see Fig. 2 ) side of the indoor heat exchanger 12.
  • the control unit K may be configured not to rotate the blower fan forward during the freezing processing. The flow of cool air in an indoor space can be prevented, and no feeling of discomfort is provided to the user.
  • the control unit K sets, for example, the freezing time based on the relative humidity of the indoor air (S102c of Fig. 6 , see Fig. 7 ). With this configuration, a suitable amount of water necessary for cleansing of the indoor heat exchanger 12 can be frozen in the indoor heat exchanger 12.
  • the control unit K sets the rotation rate of the compressor motor 31a based on the outdoor temperature (S 102d of Fig. 6 , see Fig. 8 ). With this configuration, heat radiation can be properly performed in the outdoor heat exchanger 32 during freezing of the indoor heat exchanger 12.
  • the control unit K adjusts the opening degree of the outdoor expansion valve 34 based on the temperature of the indoor heat exchanger 12 (S102e of Fig. 6 ). With this configuration, the temperature of refrigerant flowing in the indoor heat exchanger 12 can be sufficiently decreased, and moisture contained in air taken in the indoor unit 10 can be frozen in the indoor heat exchanger 12.
  • Fig. 10 illustrates the time between the time points t1 to t6 as the entire time for freezing and cleansing, but the entire time for freezing and cleansing may be changed based on the room temperature and humidity of the indoor air. Specifically, the indoor heat exchanger 12 is less frozen when the room temperature is high, and the indoor heat exchanger 12 is less frozen when the humidity is low.
  • a temperature change in the temperature TE (see Fig. 9 ) of the indoor heat exchanger 12 is slower than that in the case of the air heating operation.
  • water droplets often adhere to the fins 12a, and there is a probability that squeak noise is caused from the fins 12a at a temperature below zero. For this reason, the temperature change in the temperature TE of the indoor heat exchanger 12 is slow so that occurrence of the squeak noise can be prevented.
  • the first embodiment describes the example of the wall-mounted indoor unit 10 illustrated in Fig. 2 , but the present invention is not limited to above.
  • a second embodiment describes that the present invention is also applicable to a ceiling-embedded indoor unit 10A. Note that the same reference numerals are used to represent the same components as those illustrated in Figs. 2 and 4 , and description thereof will be omitted.
  • Fig. 14 is a view for describing a longitudinal sectional configuration of the indoor unit 10A of an air conditioner according to the second embodiment.
  • the indoor unit 10A is configured as a box body in such a substantially octagonal planar shape that four corners of a square being cut out, and is embedded in a ceiling R above a ceiling opening.
  • An indoor heat exchanger 12A and an indoor fan 14A are arranged inside the indoor unit 10A.
  • a lower opening of the indoor unit 10A is covered with a substantially square ceiling panel 2.
  • An air suction port h1 is formed at a center portion of the ceiling panel 2.
  • a rectangular air blowing port h3 along each side edge of the ceiling panel 2 is formed outside the air suction port h1.
  • the indoor fan 14 when the indoor fan 14 is driven by an indoor fan motor 14Aa arranged inside, indoor air inside a room is sucked into the indoor unit 10A from the air suction port h1 through filters 16, and turns into conditioned air by cooling or heating in the course of passing through the indoor heat exchanger 12A.
  • the conditioned air is guided to a wind direction louver 26 from the air blowing port h3, and then, is blown to the inside of the room.
  • 13A is a support frame also serving as a drain pan
  • 27 is a wind guide plate.
  • a control unit K also causes the indoor heat exchanger 12A to function as an evaporator, and also the indoor fan 14A (a blower fan) to rotate backward during the freezing processing of freezing the indoor heat exchanger 12A.
  • the indoor fan 14A a blower fan
  • each first embodiment has described the indoor heat exchanger 12 configured such that the heat transfer pipes 12g are arranged in two lines in the zigzag pattern in the air flow direction, but the present invention is not limited to above.
  • the heat transfer pipes 12g are not necessarily arranged in the zigzag pattern.
  • the heat transfer pipes 12g are not limited to two lines, and a single line of the heat transfer pipe 12g or three or more lines of the heat transfer pipes 12g may be arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (8)

  1. Klimaanlage (100), die Folgendes umfasst:
    einen Kühlkreislauf (Q), der so konfiguriert ist, dass Kühlmittel in einem Kühlzyklus der Reihe nach durch einen Kompressor (31), einen Kondensator, ein Expansionsventil (34) und einen Verdampfer umläuft; und
    eine Steuereinheit (K), die konfiguriert ist, wenigstens den Kompressor (31) und das Expansionsventil (34) zu steuern,
    wobei der Kondensator oder der Verdampfer ein Außenbereich-Wärmetauscher (32) ist und der jeweils andere des Kondensators und des Verdampfers ein Innenraum-Wärmetauscher (12, 12A) ist, und
    die Steuereinheit (K) konfiguriert ist, zu veranlassen, dass der Innenraum-Wärmetauscher (12, 12A) als Verdampfer arbeitet, und
    die Steuereinheit (K) konfiguriert ist, den Innenraum-Wärmetauscher (32) abzutauen, dadurch gekennzeichnet, dass
    die Steuereinheit (K) ferner konfiguriert ist, zu veranlassen, dass sich ein Gebläse (14, 14A) während eines Gefrierverfahrens zum Gefrieren des Innenraum-Wärmetauschers (12, 12A) rückwärts dreht.
  2. Klimaanlage (100) nach Anspruch 1, wobei
    die Steuereinheit (K) eine Windrichtungsplatte (27) öffnet, falls sich das Gebläse (14, 14A) rückwärts dreht.
  3. Klimaanlage (100) nach Anspruch 1, wobei
    die Steuereinheit (K) während des Gefrierverfahrens das Gefrierverfahren zum Stoppen des Gebläses (14, 14A) und das Gefrierverfahren zum Rückwärtsdrehen des Gebläses (14, 14A) ausführt.
  4. Klimaanlage (100) nach Anspruch 3, wobei
    eine Zeitdauer des Gefrierverfahrens zum Stoppen des Gebläses (14, 14A) länger als eine Zeitdauer des Gefrierverfahrens zum Rückwärtsdrehen des Gebläses (14, 14A) ist.
  5. Klimaanlage (100) nach Anspruch 1, wobei
    die Steuereinheit (K) das Rückwärtsdrehen des Gebläses (14, 14A) startet, nachdem eine Temperatur des Innenraum-Wärmetauschers (12, 12A) eine Temperatur erreicht hat, die einer festgelegten Temperatur gleicht oder niedriger ist.
  6. Klimaanlage (100) nach Anspruch 1, wobei
    die Steuereinheit (K) das Stoppen und Rückwärtsdrehen des Gebläses (14, 14A) während des Gefrierverfahrens wiederholt.
  7. Klimaanlage (100) nach Anspruch 1, wobei
    die Steuereinheit (K) das Gebläse (14, 14A) während des Gefrierverfahrens nicht vorwärts dreht.
  8. Klimaanlage (100) nach Anspruch 1, wobei
    der Innenraum-Wärmetauscher (12, 12A) so konfiguriert ist, dass zwei oder mehr Leitungen von Wärmeübertragungsrohren in einer Luftströmungsrichtung angeordnet sind.
EP18855110.5A 2018-05-31 2018-05-31 Klimaanlage Active EP3604953B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/020971 WO2019229933A1 (ja) 2018-05-31 2018-05-31 空気調和機

Publications (3)

Publication Number Publication Date
EP3604953A1 EP3604953A1 (de) 2020-02-05
EP3604953A4 EP3604953A4 (de) 2020-08-26
EP3604953B1 true EP3604953B1 (de) 2023-04-19

Family

ID=64560684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18855110.5A Active EP3604953B1 (de) 2018-05-31 2018-05-31 Klimaanlage

Country Status (5)

Country Link
EP (1) EP3604953B1 (de)
JP (1) JP6435443B1 (de)
CN (1) CN110785616B (de)
MY (1) MY201750A (de)
WO (1) WO2019229933A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111912080A (zh) * 2020-05-26 2020-11-10 海信（山东）空调有限公司 一种空调器及自清洁方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931566B1 (de) 1967-12-22 1974-08-22
JPS5015257Y1 (de) * 1970-09-09 1975-05-13
JPS50100762U (de) * 1974-01-18 1975-08-20
US4563877A (en) * 1984-06-12 1986-01-14 Borg-Warner Corporation Control system and method for defrosting the outdoor coil of a heat pump
US5226285A (en) * 1989-12-18 1993-07-13 Danhard, Inc. Self-cleaning heat exchanger fan assembly and controls
JPH05184181A (ja) * 1992-01-07 1993-07-23 Mitsubishi Electric Corp 空気調和機の制御装置
JP2010014288A (ja) * 2008-07-01 2010-01-21 Toshiba Carrier Corp 空気調和機
SG173543A1 (en) * 2009-02-09 2011-09-29 Carrier Corp Temperature distribution improvement in refrigerated container
US9625223B2 (en) * 2014-08-18 2017-04-18 Atieva, Inc. Self-cleaning fan assembly
CN106524389B (zh) * 2015-09-15 2020-11-10 上海海立电器有限公司 一种空调器除霜方法及其空调器
CN106247556B (zh) * 2016-08-22 2019-10-01 青岛海尔空调器有限总公司 空调自清洁控制方法
CN106556106B (zh) * 2016-11-09 2020-03-31 青岛海尔空调器有限总公司 一种空调室内机自清洁的控制方法及装置
CN106765873A (zh) * 2016-11-11 2017-05-31 青岛海尔空调器有限总公司 空调换热器自清洁方法
JP6276450B1 (ja) * 2017-04-28 2018-02-07 日立ジョンソンコントロールズ空調株式会社 空気調和機
CN107514681A (zh) * 2017-07-26 2017-12-26 青岛海尔空调器有限总公司 空调器室内机

Also Published As

Publication number Publication date
EP3604953A1 (de) 2020-02-05
JPWO2019229933A1 (ja) 2020-06-11
WO2019229933A1 (ja) 2019-12-05
CN110785616A (zh) 2020-02-11
MY201750A (en) 2024-03-15
CN110785616B (zh) 2021-01-29
EP3604953A4 (de) 2020-08-26
JP6435443B1 (ja) 2018-12-05

Similar Documents

Publication Publication Date Title
JP6454813B2 (ja) 空気調和機
JP6387197B1 (ja) 空気調和機
JP6349013B1 (ja) 空気調和機
JP6360593B1 (ja) 空気調和機
JP6559923B1 (ja) 空気調和機
TWI721754B (zh) 空調機
JP6975850B2 (ja) 空気調和機
JP2018200167A (ja) 空気調和機
TWI650188B (zh) 空調機
EP3604953B1 (de) Klimaanlage
JP6552773B1 (ja) 空気調和機

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190318

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

R17P Request for examination filed (corrected)

Effective date: 20190318

A4 Supplementary search report drawn up and despatched

Effective date: 20200728

RIC1 Information provided on ipc code assigned before grant

Ipc: F24F 11/79 20180101ALI20200722BHEP

Ipc: F24F 11/43 20180101AFI20200722BHEP

Ipc: F24F 11/81 20180101ALI20200722BHEP

Ipc: F24F 11/72 20180101ALI20200722BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20221220

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OHNISHI, KOSUKE

Inventor name: NAKAMURA, SATORU

Inventor name: KAWAZOE, AKITOSHI

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018048716

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1561460

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230515

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230622

Year of fee payment: 6

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230419

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1561460

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230821

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230819

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230720

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602018048716

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230531

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

26N No opposition filed

Effective date: 20240122

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230531

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231201

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419