WO2019155685A1 - 空気調和機 - Google Patents
空気調和機 Download PDFInfo
- Publication number
- WO2019155685A1 WO2019155685A1 PCT/JP2018/038110 JP2018038110W WO2019155685A1 WO 2019155685 A1 WO2019155685 A1 WO 2019155685A1 JP 2018038110 W JP2018038110 W JP 2018038110W WO 2019155685 A1 WO2019155685 A1 WO 2019155685A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- indoor
- heat exchange
- unit
- outdoor
- air conditioner
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000006870 function Effects 0.000 claims abstract description 35
- 238000007791 dehumidification Methods 0.000 claims description 25
- 238000001035 drying Methods 0.000 abstract description 29
- 230000006837 decompression Effects 0.000 abstract description 5
- 238000003303 reheating Methods 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 89
- 238000010981 drying operation Methods 0.000 description 33
- 239000007788 liquid Substances 0.000 description 25
- 238000010438 heat treatment Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 19
- 238000009423 ventilation Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 238000007664 blowing Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 101000710013 Homo sapiens Reversion-inducing cysteine-rich protein with Kazal motifs Proteins 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101001139126 Homo sapiens Krueppel-like factor 6 Proteins 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 150000001785 cerium compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 108090000237 interleukin-24 Proteins 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2245/00—Coatings; Surface treatments
- F28F2245/02—Coatings; Surface treatments hydrophilic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present invention relates to an air conditioner that dries an interior of an indoor unit, and particularly relates to an air conditioner that dries the interior of an indoor unit in a reheat dehumidifying operation.
- An air conditioner described in Patent Document 1 includes an indoor heat exchanger including a front indoor heat exchanger and a rear indoor heat exchanger having a smaller volume than the front indoor heat exchanger, and a front indoor An indoor throttle valve is connected between the heat exchange unit and the rear indoor heat exchange unit.
- a reheat dehumidifying operation in which the opening of the indoor throttle valve is reduced so that the front indoor heat exchange unit functions as a condenser and the rear indoor heat exchange unit functions as an evaporator (in Patent Document 1, a cycle dry operation is used). After the cooling operation is completed, the inside of the indoor unit including the front indoor heat exchange unit and the rear indoor heat exchange unit It is dried.
- the reheat dehumidification operation is performed to allow the front indoor heat exchange section to function as a condenser, thereby evaporating the condensed water generated in the front indoor heat exchange section during the cooling operation.
- the condensed water that has become water vapor is blown out together with the air from the indoor unit into the room, but the water vapor blown out into the room is again sucked into the indoor unit together with the room air and functions as an evaporator in the rear side. Water drops at the exchange.
- Condensed water that has become water droplets in the rear indoor heat exchange section flows downward through the rear indoor heat exchange section, but not all of the condensed water flows out of the rear indoor heat exchange section. It remains in the side indoor heat exchanger. Therefore, after the reheat dehumidifying operation is performed, the blowing operation is performed to evaporate the condensed water remaining in the rear indoor heat exchange section.
- the present invention solves the above-described problems, and an object of the present invention is to provide an air conditioner that can dry the interior of an indoor unit while suppressing an increase in indoor humidity.
- the air conditioner of the present invention includes an outdoor unit, and an indoor unit having an indoor heat exchanger and a pressure reducing device.
- An indoor heat exchanger has a 1st heat exchange part and a 2nd heat exchange part, and a decompression device is connected between the 1st heat exchange part and the 2nd heat exchange part.
- This air conditioner has a cooling operation or dehumidifying operation in which the first heat exchange unit and the second heat exchange unit function as an evaporator, the first heat exchange unit functions as a condenser, and the second heat exchange unit evaporates. Reheat dehumidification operation that functions as a vessel.
- the second heat exchanging unit is subjected to water sliding treatment.
- the air conditioner of the present invention configured as described above, even if a reheat dehumidifying operation is performed in which the second indoor heat exchange unit functions as an evaporator in order to dry the interior of the indoor unit, the water sliding treatment is performed. Condensed water generated in the applied second indoor heat exchange section does not remain in the second indoor heat exchange section. As a result, the interior of the indoor unit can be dried while suppressing an increase in indoor humidity.
- (A) is an external appearance perspective view of an indoor unit and an outdoor unit
- (B) is XX sectional drawing in (A).
- (A) is a refrigerant circuit figure
- (B) is a block diagram of an outdoor unit control means and an indoor unit control means. It is a flowchart which shows the flow of the process in connection with the internal drying operation implemented after a cooling operation stop.
- an air conditioner 1 includes an outdoor unit 2 installed outdoors, and is installed indoors and connected to the outdoor unit 2 with a liquid pipe 4 and a gas pipe 5.
- An indoor unit 3 is provided.
- the indoor unit 3 includes an indoor unit housing 30 that has a horizontally long and substantially rectangular parallelepiped shape.
- the indoor unit housing 30 is formed by a top panel 30a, a right panel 30b, a left panel 30c, a bottom panel 30d, and a front panel 30e. Each of these panels is formed using a resin material.
- the top panel 30a is formed in a substantially square shape to form the top surface of the indoor unit housing 30. As shown in FIG. 1B, the top panel 30a is provided with a suction port 30f for taking indoor air into the interior of the indoor unit 3. Although illustration is omitted, the suction port 30f is formed in a lattice shape.
- the right side panel 30b and the left side panel 30c form the left and right side surfaces of the indoor unit housing 30.
- the right side panel 30b and the left side panel 30c are formed in curved surfaces having a predetermined curvature, and are symmetric.
- the bottom panel 30d is formed in a substantially square shape and forms the bottom surface of the indoor unit housing 30. As shown in FIG. 1 (B), a base 30j is fixed to the bottom panel 30d for attaching the indoor unit 3 to the wall surface.
- the front panel 30e is formed in a substantially square shape and is disposed so as to cover the front surface of the indoor unit housing 30.
- the front panel 30 e forms the design surface of the indoor unit 3.
- the top panel 30a is provided with the suction port 30f, and below the front panel 30e, indoor air that has been heat-exchanged with the refrigerant by the indoor heat exchanger 31 described later is placed indoors.
- An outlet 30g for blowing out is provided. And the space which connects the suction inlet 30f inside the housing
- the indoor fan 32 is a cross flow fan formed of a resin material, and is fixed to the base 30j and disposed in the ventilation path 30h. As the indoor fan 32 rotates, room air is sucked into the ventilation path 30h from the suction port 30f, and room air is blown out from the ventilation path 30h through the outlet 30g.
- the indoor heat exchanger 31 is disposed above the indoor fan 32 and on the front panel 30e side.
- the indoor heat exchanger 31 includes a first heat exchange part 31a formed in an inverted V shape and a second heat exchange part 31b formed in a plate shape.
- the first heat exchange section 31a is a fin-and-tube heat exchanger, and is formed by inserting heat transfer tubes 31a2 made of a plurality of copper tubes through fins 31a1 made of a plurality of aluminum materials.
- the second heat exchanging portion 31b is also a fin-and-tube heat exchanger like the first heat exchanging portion 31a, and is formed by inserting heat transfer tubes 31b2 made of a plurality of copper tubes through fins 31b1 made of a plurality of aluminum materials. Is done.
- the first heat exchanging portion 31a is arranged above the indoor fan 32 (on the top panel 30a side) in the ventilation path 30h.
- the surface of the fin 31a1 of the first heat exchange part 31a is subjected to a hydrophilic treatment.
- the hydrophilic treatment is a treatment for making the surface of the fin 31a1 easily wetted with water.
- a hydrophilic treatment agent composed of water and a poorly water-soluble cerium compound dispersed in the water is applied to the surface of the fin 31a1. By applying and drying, hydrophilicity is imparted to the surface of the fin 31a1.
- the second heat exchanging part 31b is parallel to the vertical direction in front of the indoor fan 32 (front panel 30e side) in the ventilation path 30h, that is, the thickness direction of the second heat exchanging part 31b is from the indoor fan 33 to the front panel 30e. It arrange
- the surface of the fin 31b1 of the second heat exchanging part 31b is subjected to water sliding treatment.
- the water-sliding treatment is a treatment for allowing water to be repelled on the surface of the fin 31b1, and for example, a water-sliding agent containing silicone resin and polyalkylhydrogensiloxane is applied to the surface of the fin 31b1. By making it dry, water slidability is imparted to the surface of the fin 31b1.
- the volume of the 1st heat exchange part 31a is larger than the volume of the 2nd heat exchange part 31b.
- the air outlet 30g is formed by a lower portion of the base 30j and a lower surface of a casing 30k made of a resin material attached to the front panel 30e.
- the upper surfaces of the base 30j and the casing 30k are a drain pan 30m that receives the condensed water generated in the indoor heat exchanger 31.
- the air outlet 30g is provided with two upper and lower wind direction plates 35 that deflect the air blown from the air outlet 30g in the vertical direction.
- Each of the two up-and-down air direction plates 35 is formed of a resin material, and when the indoor unit 3 is not in operation, each of the up-and-down air direction plates 35 can be rotated to close the outlet 30g. It is said that.
- Each vertical wind direction plate 35 is fixed to a rotating shaft (not shown), and each vertical wind direction plate 35 rotates in the vertical direction to deflect the air blown from the outlet 30g in the vertical direction.
- a plurality of left and right wind direction plates 36 that deflect the air blown from the blower outlet 30g in the left-right direction are provided on the upstream side of the blower outlet 30g as viewed from the vertical wind direction plate 35 (inside the indoor unit housing 30). ing.
- Each of the left and right wind direction plates 36 is formed of a resin material and is fixed to a rotation shaft (not shown). When each left and right wind direction plate 36 rotates in the left and right direction, the air blown from the outlet 30g is deflected in the left and right direction. To do.
- a filter 38 for removing dust contained in the air taken into the indoor unit 3 is disposed above the indoor heat exchanger 31 (between the indoor heat exchanger 31 and the suction port 30f) and in front of the indoor heat exchanger 31 (between the indoor heat exchanger 31 and the front panel 30e) in the ventilation path 30h.
- the filter 38 is formed, for example, by braiding fibers made of a resin material into a mesh shape.
- each device constituting the outdoor unit 2 and the indoor unit 3 and the refrigerant circuit of the air conditioner 1 in which the outdoor unit 2 and the indoor unit 3 are connected by refrigerant piping will be described in detail with reference to FIG. .
- the outdoor unit 2 and the indoor unit 3 are connected by the liquid pipe 4 and the gas pipe 5 which are refrigerant pipes.
- the shutoff valve 25 for example, a two-way valve
- the shutoff valve 26 for example, a three-way valve
- the refrigerant circuit 10 of the air conditioner 1 is configured as described above.
- the outdoor unit 2 includes a compressor 21, a four-way valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 24, the above-described closing valve 25 and closing valve 26, and an outdoor fan 27 inside a rectangular parallelepiped housing. And an outdoor unit control means 200. And these each apparatus except the outdoor fan 27 and the outdoor unit control means 200 are mutually connected by each refrigerant
- the compressor 21 is a variable capacity compressor that can change the operating capacity by controlling the rotation speed by an inverter (not shown).
- the refrigerant discharge side of the compressor 21 is connected to the port a of the four-way valve 22 by a discharge pipe 61.
- the refrigerant suction side of the compressor 21 is connected to the port c of the four-way valve 22 by a suction pipe 66.
- the four-way valve 22 is a valve for switching the direction in which the refrigerant flows, and has four ports a, b, c, and d.
- the port a is connected to the refrigerant discharge side of the compressor 21 by the discharge pipe 61 as described above.
- the port b is connected to one refrigerant inlet / outlet of the outdoor heat exchanger 23 by a refrigerant pipe 62.
- the port c is connected to the refrigerant suction side of the compressor 21 by the suction pipe 66 as described above.
- the port d is connected to the shutoff valve 26 and the outdoor unit gas pipe 64.
- the outdoor heat exchanger 23 is a fin-and-tube heat exchanger in which heat transfer tubes made of a plurality of copper tubes are inserted into fins made of a plurality of aluminum materials, and rotation of a refrigerant and an outdoor fan 27 described later.
- the outside air taken into the outdoor unit 2 is subjected to heat exchange.
- one refrigerant inlet / outlet of the outdoor heat exchanger 23 is connected to the port b of the four-way valve 22 by the refrigerant pipe 62, and the other refrigerant inlet / outlet is connected to the closing valve 25 by the outdoor unit liquid pipe 63.
- the outdoor expansion valve 24 is, for example, an electronic expansion valve.
- the outdoor expansion valve 24 adjusts the amount of refrigerant flowing through the indoor unit 3 by adjusting the opening degree of the outdoor expansion valve 24 according to the cooling capacity and heating capacity required by the indoor unit 3.
- the outdoor fan 27 is a propeller fan formed of a resin material and is disposed in the vicinity of the outdoor heat exchanger 23.
- the outdoor fan 27 is rotated by a fan motor (not shown) to take outside air into the outdoor unit 2 from a suction port provided in the casing of the outdoor unit 2, and the outdoor air exchanged heat with the refrigerant in the outdoor heat exchanger 23. It discharges to the exterior of the outdoor unit 2 from the blower outlet provided in the housing
- the outdoor unit 2 is provided with the following three sensors.
- the discharge pipe 61 is provided with a discharge temperature sensor 71 that detects the temperature of the refrigerant discharged from the compressor 21.
- An outdoor heat exchanger temperature sensor 72 that detects the temperature of the outdoor heat exchanger 23 is provided at a substantially middle portion of a refrigerant path (not shown) of the outdoor heat exchanger 23.
- An outdoor temperature sensor 73 that detects the temperature of the outside air flowing into the outdoor unit 2, that is, the outside air temperature, is provided near the suction port provided in the housing of the outdoor unit 2.
- the outdoor unit control means 200 is mounted on a control board stored in an electrical component box (not shown) provided inside the casing of the outdoor unit 2. As shown in FIG. 2B, the outdoor unit control means 200 includes a CPU 210, a storage unit 220, a communication unit 230, and a sensor input unit 240.
- the storage unit 220 is composed of, for example, a flash memory, and stores a detection value corresponding to a control program of the outdoor unit 2 and detection signals from various sensors, a control state of the compressor 21 and the outdoor fan 27, and the like.
- the communication unit 230 is an interface that performs communication with the indoor unit 3.
- the sensor input unit 240 captures detection results from various sensors of the outdoor unit 2 and outputs them to the CPU 210.
- CPU210 takes in the detection result in each sensor of outdoor unit 2 mentioned above via sensor input part 240.
- FIG. the CPU 210 takes in a control signal transmitted from the indoor unit 3 via the communication unit 230.
- the CPU 210 performs drive control of the compressor 21 and the outdoor fan 27 based on the detection results and control signals taken in.
- the CPU 210 performs switching control of the four-way valve 22 based on the detection results and control signals taken in.
- the CPU 210 adjusts the opening degree of the outdoor expansion valve 24 based on the acquired detection result and control signal.
- the indoor unit 3 includes an indoor expansion valve 32 that is a decompression device of the present invention, a liquid pipe, in addition to the indoor heat exchanger 31, the indoor fan 33, the up / down air direction plate 35, the left / right air direction plate 36, and the filter 38 described above. 4, a liquid pipe connecting portion 34 to which 4 is connected, a gas pipe connecting portion 35 to which the gas pipe 5 is connected, and an indoor unit control means 300.
- These devices other than the indoor fan 32, the up / down air direction plate 35, the left / right air direction plate 36, the filter 38, and the indoor unit control means 300 are connected to each other through the refrigerant pipes described in detail below, and are connected to the refrigerant circuit 10.
- the indoor unit refrigerant circuit 10b that constitutes a part of the indoor unit refrigerant circuit 10b is configured.
- the indoor heat exchanger 31 exchanges heat between indoor air taken into the indoor unit 3 from the suction port 30f of the indoor unit 3 by the rotation of the refrigerant and the indoor fan 32, and as described above, the surface of the fin 31a1
- the first heat exchanging portion 31a is subjected to a hydrophilization treatment
- the second heat exchanging portion 31b is a surface of the fin 31b1 subjected to a water slicking treatment.
- One refrigerant inlet / outlet of the first heat exchanging portion 31 a is connected to the liquid pipe connecting portion 34 by the indoor unit liquid pipe 67.
- One refrigerant inlet / outlet of the second heat exchange part 31b is connected to the gas pipe connection part 35 by an indoor unit gas pipe 68.
- the other refrigerant inlet / outlet of the first heat exchanging portion 31a and the other refrigerant inlet / outlet of the second heat exchanging portion 31b are connected by a refrigerant pipe 69.
- the indoor expansion valve 32 is, for example, an electronic expansion valve.
- the indoor expansion valve 32 is provided in the refrigerant pipe 69, and when the air conditioner 1 performs the heating operation, the cooling operation, and the dehumidifying operation, the opening degree is fully opened.
- the indoor expansion valve 32 has a predetermined opening that is smaller than the fully opened (for example, half or less of the fully opened state).
- the indoor unit 3 is provided with two sensors described below.
- An indoor heat exchanger temperature sensor 74 that detects the temperature of the first heat exchange part 31a of the indoor heat exchanger 31 is provided at a substantially intermediate part of a heat transfer tube (not shown) of the first heat exchange part 31a of the indoor heat exchanger 31. ing.
- the temperature detected by the indoor heat exchanger temperature sensor 74 is regarded as the temperature of the indoor heat exchanger 31 and is related to the cooling operation or the heating operation based on the detected temperature. Take control. Further, as shown in FIG. 1B, between the suction port 30f of the indoor unit 3 and the filter 38, the temperature of the air sucked into the interior of the indoor unit 3 from the suction port 30f, that is, the indoor temperature for detecting the indoor temperature.
- a sensor 75 is provided.
- the indoor unit control means 300 is mounted on a control board stored in an electrical component box (not shown) provided inside the housing 30 of the indoor unit 3. As shown in FIG. 2B, the indoor unit control means 300 includes a CPU 310, a storage unit 320, a communication unit 330, and a sensor input unit 340.
- the storage unit 320 is configured by a flash memory, for example, and stores a control program for the indoor unit 3, detection values corresponding to detection signals from various sensors, a control state of the indoor fan 32, and the like.
- the communication unit 330 is an interface for communicating with the outdoor unit control means 200 of the outdoor unit 2.
- the sensor input unit 340 takes in the detection results of the indoor heat exchanger temperature sensor 74 and the indoor temperature sensor 75 of the indoor unit 3 and outputs them to the CPU 310.
- the CPU310 takes in the detection result in each sensor of indoor unit 3 mentioned above via sensor input part 340.
- the CPU 310 transmits an operation information signal including an operation mode (cooling operation / dehumidification operation / reheat dehumidification operation / heating operation), an air volume, and the like, transmitted from a remote controller (not shown) operated by the user via the communication unit 330. Capture.
- the CPU 310 performs drive control of the indoor fan 32, the up / down air direction plate 35, and the left / right air direction plate 36 based on the detection result and the operation information signal taken in.
- the air conditioner 1 performs the heating operation
- the air conditioner 1 performs the cooling operation and the dehumidifying operation
- the air conditioner 1 performs a reheat dehumidification driving
- operation is demonstrated.
- the solid line arrows indicate the refrigerant flow during the cooling operation, the dehumidifying operation, and the reheat dehumidifying operation
- the broken line arrow indicates the refrigerant flow during the heating operation.
- the compressor 21 When the compressor 21 is driven in the state of the refrigerant circuit 10 as described above, the high-pressure refrigerant discharged from the compressor 21 flows through the discharge pipe 61 and flows into the four-way valve 22, and from the four-way valve 22 to the outdoor unit gas pipe 64. Then, the gas flows into the gas pipe 5 through the closing valve 26. The refrigerant flowing through the gas pipe 5 flows into the indoor unit 3 through the gas pipe connection portion 35.
- the refrigerant flowing into the indoor unit 3 flows through the indoor unit gas pipe 68 and flows into the second heat exchanging part 31b of the indoor heat exchanger 31, and the ventilation path 30h of the indoor unit 3 from the suction port 30f by the rotation of the indoor fan 32. It will condense by exchanging heat with the indoor air taken in.
- the refrigerant that has flowed out of the second heat exchanging portion 31b into the refrigerant pipe 69 passes through the indoor expansion valve 32 whose opening degree is fully open, flows into the second heat exchanging portion 31a of the indoor heat exchanger 31, and then flows into the indoor fan. Condensation is performed by exchanging heat with the indoor air taken into the ventilation path 30h of the indoor unit 3 from the suction port 30f by the rotation of 32.
- the 1st heat exchange part 31a and the 2nd heat exchange part 31b of the indoor heat exchanger 31 function as a condenser, and a refrigerant
- coolant and heat are each in the 1st heat exchange part 31a and the 2nd heat exchange part 31b.
- the room air in which the indoor unit 3 is installed is heated by blowing the exchanged room air into the room through the air outlet 30g.
- the pressure is reduced.
- the refrigerant flowing through the outdoor expansion valve 24 and flowing into the outdoor heat exchanger 23 evaporates by exchanging heat with the outside air taken into the outdoor unit 2 by the rotation of the outdoor fan 27.
- the refrigerant that has flowed out of the outdoor heat exchanger 23 into the refrigerant pipe 62 flows through the four-way valve 22 and the suction pipe 66, is sucked into the compressor 21, and is compressed again.
- the high-pressure refrigerant discharged from the compressor 21 flows through the discharge pipe 61 and flows into the four-way valve 22, and passes through the refrigerant pipe 62 from the four-way valve 22. It flows and flows into the outdoor heat exchanger 23.
- the refrigerant flowing into the outdoor heat exchanger 23 is condensed by exchanging heat with the outside air taken into the outdoor unit 2 by the rotation of the outdoor fan 27.
- the refrigerant that has flowed from the outdoor heat exchanger 23 to the outdoor unit liquid pipe 63 is requested by the user in the indoor unit 3, specifically, the cooling capacity required during the cooling operation, and the indoor required during the dehumidifying operation.
- the pressure is reduced when passing through the outdoor expansion valve 24 having an opening corresponding to each humidity, and flows into the liquid pipe 4 through the closing valve 25.
- the refrigerant flowing through the liquid pipe 4 and flowing into the indoor unit 3 through the liquid side connection section 34 flows through the indoor unit liquid pipe 67 and flows into the first heat exchange section 31a of the indoor heat exchanger 31, and the indoor fan 32. Is evaporated by exchanging heat with the indoor air taken into the ventilation path 30h of the indoor unit 3 from the suction port 30f.
- the refrigerant that has flowed out of the first heat exchanging portion 31a into the refrigerant pipe 69 passes through the indoor expansion valve 32 whose opening degree is fully open, flows into the first heat exchanging portion 31b of the indoor heat exchanger 31, and then flows into the indoor fan. By rotating 32, heat is exchanged with room air taken into the ventilation path 30h of the indoor unit 3 from the suction port 30f to evaporate.
- the 1st heat exchange part 31a and the 2nd heat exchange part 31b of the indoor heat exchanger 31 function as an evaporator, and a refrigerant
- coolant and heat are each in the 1st heat exchange part 31a and the 2nd heat exchange part 31b.
- the exchanged room air is blown into the room through the air outlet 30g, whereby the room in which the indoor unit 3 is installed is cooled or dehumidified.
- the rotational speed of the indoor fan 33 during the dehumidifying operation is lower than the rotational speed of the indoor fan 33 during the cooling operation so that the amount of air blown from the outlet 30g is smaller during the dehumidifying operation than during the cooling operation. Rotational speed
- the refrigerant that has flowed out of the second heat exchange part 31b of the indoor heat exchanger 31 flows through the indoor unit gas pipe 68 and flows into the gas pipe 5 through the gas side connection part 35.
- the refrigerant flowing through the gas pipe 5 and flowing into the outdoor unit 2 through the closing valve 26 sequentially flows through the outdoor unit gas pipe 64, the four-way valve 22, and the suction pipe 66, and is sucked into the compressor 21 and compressed again.
- the refrigerant circuit 10 has a cooling cycle as in the case of the above-described cooling operation or dehumidifying operation.
- the opening degree of the outdoor expansion valve 24 and the indoor expansion valve 32 and the rotation speed of the indoor fan 33 are different from those in the cooling operation or the dehumidifying operation, respectively.
- the opening degree of the outdoor expansion valve 24 is fully opened, and the opening degree of the indoor expansion valve 32 is smaller than a predetermined opening degree, for example, an opening degree that is half the opening degree.
- the 1st heat exchange part 31a of the indoor heat exchanger 31 functions as a condenser
- the 2nd heat exchange part 31b of the indoor heat exchanger 31 functions as an evaporator.
- the rotation speed of the indoor fan 33 is set to be lower than the rotation speed during the cooling operation or the dehumidifying operation.
- the operation of the refrigerant circuit 10 and the flow of the refrigerant other than the opening degree of the outdoor expansion valve 24 and the indoor expansion valve 32 and the rotation speed of the indoor fan 33 are the same as those in the cooling operation or the dehumidifying operation. Therefore, detailed description is omitted. In the following description, a period from when the refrigerant flows out of the outdoor heat exchanger 23 until it flows out of the second heat exchange part 31b of the indoor heat exchanger 31 will be described.
- the refrigerant that has exchanged heat with the outside air in the outdoor heat exchanger 23 and is in a gas-liquid two-phase state flows to the outdoor unit liquid pipe 63, passes through the fully opened outdoor expansion valve 24, and passes through the closing valve 25. It flows into the liquid pipe 4.
- the refrigerant flowing through the liquid pipe 4 and flowing into the indoor unit 3 through the liquid side connection section 34 flows through the indoor unit liquid pipe 67 and flows into the first heat exchange section 31a of the indoor heat exchanger 31, and the indoor fan 32. Is condensed by exchanging heat with the indoor air taken into the ventilation path 30h of the indoor unit 3 from the suction port 30f.
- the refrigerant that has flowed out of the first heat exchanging portion 31a into the refrigerant pipe 69 passes through the indoor expansion valve 32 having the predetermined opening degree and is reduced in pressure to the first heat exchanging portion 31b of the indoor heat exchanger 31. It flows in and evaporates by exchanging heat with the indoor air taken into the ventilation path 30h of the indoor unit 3 from the suction port 30f by the rotation of the indoor fan 32.
- the 1st heat exchange part 31a of the indoor heat exchanger 31 functions as a condenser
- the 2nd heat exchange part 31b of the indoor heat exchanger 31 functions as an evaporator
- the indoor humidity is lowered while suppressing the temperature drop of the air blown out.
- the internal drying operation of the present embodiment is performed when there is an instruction from the user.
- the reheat dehumidification described above is performed.
- the operation is performed for a predetermined time to dry the condensed water generated inside the indoor unit 3.
- FIG. 3 is a flowchart showing processing related to the internal drying operation when the air conditioner 1 performs the internal drying operation.
- ST represents a process step, and the number following this represents a step number.
- the outdoor unit control means 200 and the indoor unit control means 300 described above constitute the control means of the present invention. Therefore, in the description of the processing related to the internal drying operation thereafter, the control body of the air conditioner 1 will be described using the control means, and the control body of the individual devices of the outdoor unit 2 and the indoor unit 3 will be described. Description will be made using the CPU 210 of the outdoor unit control means 200 and the CPU 310 of the indoor unit control means 300 as appropriate.
- the opening degree during cooling / dehumidification that is the opening degree of the outdoor expansion valve 24 during cooling operation or dehumidifying operation is Dop
- the compressor rotation speed during cooling / dehumidification that is the rotation speed of the compressor 21 Is Rca
- the outdoor fan rotation speed during cooling / dehumidification of the outdoor fan 27 is Rfoa
- the indoor fan rotation speed during cooling / dehumidification of the indoor fan 33 is Rfia.
- the cooling / dehumidifying degree of opening Dop and the cooling / dehumidifying compressor rotation speed Rca are values according to the cooling capacity required by the user or the indoor humidity required by the user.
- the cooling fan / dehumidifying outdoor fan rotational speed Rfoa is set to a value corresponding to the cooling / dehumidifying compressor rotational speed Rca.
- the cooling fan / dehumidifying indoor fan rotation speed Rfia is set so that the rotation speed during the dehumidifying operation is lower than the rotation speed during the cooling operation.
- the opening degree during internal drying which is the opening degree of the indoor expansion valve 32 during the internal drying operation
- the rotational speed of the compressor during internal drying which is the rotational speed of the compressor 21
- Rcd the rotational speed of the outdoor fan 27.
- Rfod be the outdoor fan rotation speed during internal drying
- Rfid be the internal fan rotation speed during internal drying, which is the rotation speed of the indoor fan 33.
- the opening degree Dip at the time of internal drying is a predetermined opening degree at which the pressure of the refrigerant can be lowered so that the second heat exchanging part 31b of the indoor heat exchanger 31 functions as an evaporator, for example, half of full opening The opening is small.
- the internal drying compressor rotational speed Rcd and the internal drying indoor fan rotational speed Rfid are set to predetermined rotational speeds lower than those during cooling operation or dehumidifying operation.
- the internal drying compressor The rotational speed Rcd is 40 rps
- the indoor fan rotational speed Rfid during internal drying is 1100 rpm.
- the internal fan outdoor fan rotation speed Rfod is set to a value corresponding to the internal drying compressor rotation speed Rcd.
- the internal drying compressor rotation speed Rcd and the internal drying indoor fan rotation speed Rfid are obtained in advance through tests or the like, and are stored in the storage unit 220 of the outdoor unit control unit 200 or the indoor unit control unit 300. Is a value stored in the storage unit 320, and it has been found that the condensed water inside the indoor unit 3 is substantially evaporated if the internal drying operation is performed during the drying operation time tp described below. is there.
- tp be the drying operation time, which is the time to continue the internal drying operation.
- the drying operation time tp is a value stored in the storage unit 220 of the outdoor unit control unit 200 or the storage unit 320 of the indoor unit control unit 300 after performing a test or the like in advance, and the internal drying operation is performed during the drying operation time tp. If it continues, it is the time when it is found that the condensed water generated when the cooling operation or the dehumidifying operation is performed inside the indoor unit 3 is almost evaporated.
- An example of the drying operation time tp is 85 minutes.
- the control means determines whether or not the user's operation instruction is a cooling operation or a dehumidifying operation (ST1). If the user's operation instruction is not a cooling operation or a dehumidifying operation (ST1-No), the control means performs a heating operation start process or a reheat dehumidifying operation start process (ST14).
- the start processing of the heating operation is that the CPU 210 operates the four-way valve 22 to set the refrigerant circuit 10 to the heating cycle.
- the reheat dehumidifying operation start process is that the CPU 210 operates the four-way valve 22 to set the refrigerant circuit 10 to the cooling cycle, the CPU 210 fully opens the opening of the outdoor expansion valve 24, and the CPU 310 performs the indoor expansion valve 32.
- the opening degree By setting the opening degree to the predetermined opening degree Dip described above, the first heat exchange unit 31a functions as a condenser and the second heat exchange unit 31b functions as an evaporator.
- the control means that has finished the process of ST14 performs the heating operation control or the reheat dehumidification operation control (ST15), and advances the process to ST5.
- the control means has the required heating capacity for the compressor 21, the outdoor expansion valve 24, the outdoor fan 27, the indoor expansion valve 32, and the indoor fan 33, and the like. Control accordingly.
- the control means performs a cooling operation or a dehumidifying operation start process (ST2).
- the start process of the cooling operation or the start process of the dehumidifying operation means that the CPU 210 operates the four-way valve 22 to set the refrigerant circuit 10 to the cooling cycle.
- control means sets the opening of the outdoor expansion valve 24 to the cooling / dehumidifying opening Dop and fully opens the opening of the indoor expansion valve 32 (ST3).
- the CPU 210 sets the opening degree of the outdoor expansion valve 24 to the cooling / dehumidifying opening degree Dop, and the CPU 310 makes the opening degree of the indoor expansion valve 32 fully open.
- the control means sets the rotation speed of the compressor 21 as the compressor rotation speed Rca during cooling / dehumidification, sets the rotation speed of the outdoor fan 27 as the outdoor fan rotation speed Rfoa during cooling / dehumidification, and sets the rotation speed of the indoor fan 33 as the rotation speed.
- the cooling fan or the dehumidifying operation is started as the indoor fan rotation speed Rfia during the cooling / dehumidifying operation (ST4).
- the CPU 210 sets the rotation speed of the compressor 21 as the compressor rotation speed Rca during cooling / dehumidification and the rotation speed of the outdoor fan 27 as the outdoor fan rotation speed Rfoa during cooling / dehumidification.
- the number of rotations is the indoor fan rotation number Rfia during cooling / dehumidification.
- control means determines whether or not there is an instruction to switch the operation mode by the user (ST5).
- the operation mode switching instruction instructs switching from the current operation to another operation, for example, switching from the cooling operation to the heating operation.
- the control means If there is an operation mode switching instruction (ST5-Yes), the control means returns the process to ST1. If there is no operation mode switching instruction (ST5-Yes), the control means determines whether there is an operation stop instruction by the user (ST6).
- the operation stop instruction is an instruction to stop the compressor 21 and stop the operation of the air conditioner 1.
- the control means determines whether the current operation is a cooling operation or a dehumidifying operation (ST16). If the current operation is a cooling operation or a dehumidifying operation (ST16-Yes), the control means returns the process to ST3. If the current operation is not a cooling operation or a dehumidifying operation (ST16-No), that is, if the current operation is a heating operation or a reheat dehumidifying operation, the control means returns the process to ST15.
- the control means performs the internal drying operation by the user when stopping the air conditioner 1 during the cooling operation or the dehumidifying operation. It is determined whether or not it is set to be performed (ST7). For example, whether or not to perform the internal drying operation is set in advance when the air conditioner 1 is stopped when a cooling operation or a dehumidifying operation is performed by an operation of a remote controller (not shown) by the user.
- control means proceeds to ST13. If it is set to perform the internal drying operation (ST7-Yes), the control means fully opens the opening of the outdoor expansion valve 24, and sets the opening of the indoor expansion valve 32 to the opening Dip during internal drying. (ST8). Specifically, the CPU 210 fully opens the opening of the outdoor expansion valve 24, and the CPU 310 sets the opening of the indoor expansion valve 32 as the opening Dip during internal drying.
- the control means sets the rotation speed of the compressor 21 as the compressor rotation speed Rcd during internal drying, sets the rotation speed of the outdoor fan 27 as the outdoor fan rotation speed Rfod during internal drying, and sets the rotation speed of the indoor fan 33 as internal drying.
- the indoor fan rotation speed Rfid ST9
- the internal drying operation is started.
- the CPU 210 sets the rotation speed of the compressor 21 as the compressor rotation speed Rcd during internal drying, sets the rotation speed of the outdoor fan 27 as the outdoor fan rotation speed Rfod during internal drying, and the CPU 310 sets the rotation speed of the indoor fan 33. Is the indoor fan rotation speed Rfid during internal drying.
- Each process of ST8 and ST9 described above is a process related to the internal drying operation.
- the refrigerant circuit 10 in the reheat dehumidifying operation state as described above first, in the first heat exchange unit 31a functioning as a condenser, the refrigerant flowing into the first heat exchange unit 31a is used.
- the first heat exchange unit 31a is warmed, and the condensed water generated in the first heat exchange unit 31a evaporates during the cooling operation or the dehumidifying operation.
- the first heat exchanging portion 31a is warmed, so that the other devices inside the indoor unit 3 other than the first heat exchanging portion 31a and members constituting the housing 30 can be dried.
- the first heat exchanging portion 31a is subjected to the hydrophilization treatment, so that the condensed water generated in the first heat exchanging portion 31a does not drop on the drain pan 30m below and the first heat exchanging portion 31a It remains on the surface of the fin 31a1. For this reason, if the internal drying operation is performed with the refrigerant circuit 10 in the reheat dehumidifying operation state, the condensed water is likely to evaporate from the first heat exchange unit 31a.
- the condensed water that has been heated by the first heat exchanging portion 31a to become water vapor flows out from the blower outlet 30g to the outside of the casing 30 of the indoor unit 3 together with air by the rotation of the indoor fan 33.
- the indoor air containing the condensed water that has become the water vapor is again taken into the housing 30 of the indoor unit 3 from the suction port 30f and cooled by the refrigerant in the second heat exchange unit 31b functioning as an evaporator.
- water droplets are formed in the second heat exchange section 31b.
- the condensed water that has become water droplets from the water vapor in the second heat exchanging portion 31b flows through the fin 31b1 and immediately flows downward to the drain pan. Drip to 30m.
- control means starts timer measurement (ST10), and determines whether or not the drying operation time tp has elapsed from the start of timer measurement (ST11). If the drying operation time tp has not elapsed (ST11-No), the control unit returns the process to ST11 and continues the internal drying operation.
- the control means If the drying operation time tp has elapsed (ST11-Yes), the control means resets the timer (ST12). And a control means performs an operation stop process (ST13), and complete
- the refrigerant circuit 10 When the air conditioner 1 is stopped after the cooling operation or after the dehumidifying operation, when the user gives an instruction to perform the internal drying operation, the refrigerant circuit 10 The internal drying operation is performed in the state of the reheat dehumidification operation. Thereby, the inside of the indoor unit 3 can be dried while suppressing an increase in humidity in the room where the indoor unit 3 is installed.
- the decompression device is an expansion valve
- the present invention is not limited to this.
- the second heat exchanging portion 31b functions as an evaporator during the reheat dehumidifying operation, such as an electromagnetic valve whose opening degree changes only in two stages of fully open and a predetermined opening degree. Any device can be used as long as the opening degree can be adjusted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
尚、本発明は以下の実施形態に限定されることはなく、本発明の主旨を逸脱しない範囲で種々変形することが可能である。
室内機3は、横長の略直方体形状とされた室内機筐体30を有している。室内機筐体30は、天面パネル30aと、右側面パネル30bと、左側面パネル30cと、底面パネル30dと、前面パネル30eで形成されている。これら各パネルは、全て樹脂材を用いて形成されている。
次に、室外機2および室内機3を構成する各装置と、室外機2と室内機3が冷媒配管で接続されてなる空気調和機1の冷媒回路について、図2を用いて詳細に説明する。前述したように、室外機2と室内機3は冷媒配管である液管4とガス管5で接続されている。詳細には、室外機2の閉鎖弁25(例えば、二方弁)と室内機3の液管接続部34が液管4で接続されている。また、室外機2の閉鎖弁26(例えば、三方弁)と室内機3のガス管接続部35がガス管5で接続されている。以上により、空気調和機1の冷媒回路10が構成されている。
室外機2は、直方体形状の筐体の内部に圧縮機21と、四方弁22と、室外熱交換器23と、室外膨張弁24と、上述した閉鎖弁25および閉鎖弁26と、室外ファン27と、室外機制御手段200を備えている。そして、室外ファン27と室外機制御手段200を除くこれら各装置が、以下で詳述する各冷媒配管で相互に接続されて、冷媒回路10の一部をなす室外機冷媒回路10aを構成している。
室内機3は、前述した室内熱交換器31、室内ファン33、上下風向板35、左右風向板36、および、フィルタ38に加えて、本発明の減圧装置である室内膨張弁32と、液管4が接続される液管接続部34と、ガス管5が接続されるガス管接続部35と、室内機制御手段300を備えている。そして、室内ファン32、上下風向板35、左右風向板36、フィルタ38、および、室内機制御手段300を除くこれら各装置が、以下で詳述する各冷媒配管で相互に接続されて冷媒回路10の一部をなす室内機冷媒回路10bを構成している。
次に、本実施形態における空気調和機1の空調運転時の冷媒回路10における冷媒の流れや各部の動作について、図2(A)を用いて説明する。本実施形態の空気調和機1では、室外熱交換器23を蒸発器として機能させるとともに室内熱交換器31の第1熱交換部31aおよび第2熱交換部31bを凝縮器として機能させる暖房運転と、室外熱交換器23を凝縮器として機能させるとともに室内熱交換器31の第1熱交換部31aおよび第2熱交換部31bを蒸発器として機能させる冷房運転および除湿運転と、室外熱交換器23および室内熱交換器31の第1熱交換部31aを凝縮器として機能させるとともに第2熱交換部31bを蒸発器として機能させる再熱除湿運転とが行える。
空気調和機1が暖房運転を行う場合、図2(A)に示すように、四方弁22が破線で示す状態、すなわち、四方弁22のポートaとポートdとが連通するよう、また、ポートbとポートcとが連通するよう、切り換えられる。これにより、冷媒回路10において室外熱交換器23が蒸発器として機能するとともに室内熱交換器31が凝縮器として機能するようになり、冷媒回路10は破線矢印で示す方向に冷媒が循環する暖房サイクルとなる。
空気調和機1が冷房運転あるいは除湿運転を行う場合、図2(A)に示すように、四方弁22が実線で示す状態、すなわち、四方弁22のポートaとポートbとが連通するよう、また、ポートcとポートdとが連通するよう、切り換えられる。これにより、冷媒回路10において室外熱交換器23が凝縮器として機能するとともに室内熱交換器31が蒸発器として機能するようになり、冷媒回路10は実線矢印で示す方向に冷媒が循環する冷房サイクルとなる。
空気調和機1が再熱除湿運転を行う場合の冷媒回路10は、前述した冷房運転あるいは除湿運転の場合と同じく冷房サイクルとなる。ただし、室外膨張弁24と室内膨張弁32の開度、および、室内ファン33の回転数が、それぞれ冷房運転あるいは除湿運転の場合と異なる。具体的には、室外膨張弁24の開度は全開とされ、室内膨張弁32の開度は所定の開度、例えば、全開の半分の開度より小さい開度とされる。これにより、室内熱交換器31の第1熱交換部31aが凝縮器として機能するとともに、室内熱交換器31の第2熱交換部31bが蒸発器として機能する。また、室内ファン33の回転数は、冷房運転時や除湿運転時の回転数より低い回転数とされる。
次に、冷房運転後あるいは除湿運転後に空気調和機1で行う内部乾燥運転について、図1乃至図3を用いて説明する。本実施形態の内部乾燥運転は、使用者の指示がある場合に行われるものであり、冷房運転あるいは除湿運転を行っているときに使用者が運転停止を指示した場合に、前述した再熱除湿運転を所定時間行って室内機3の内部で発生した凝縮水を乾燥させるものである。
まず、制御手段は、使用者の運転指示が冷房運転あるいは除湿運転であるか否かを判断する(ST1)。使用者の運転指示が冷房運転あるいは除湿運転でなければ(ST1-No)、制御手段は、暖房運転の開始処理あるいは再熱除湿運転の開始処理を行う(ST14)。ここで、暖房運転の開始処理とは、CPU210が四方弁22を操作して冷媒回路10を暖房サイクルとすることである。また、再熱除湿運転の開始処理とは、CPU210が四方弁22を操作して冷媒回路10を冷房サイクルとするとともに、CPU210が室外膨張弁24の開度を全開とし、CPU310が室内膨張弁32の開度を上述した所定開度Dipとすることで、第1熱交換部31aが凝縮器として機能するとともに第2熱交換部31bが蒸発器として機能する状態にすることである。
具体的には、CPU210が圧縮機21の回転数を内部乾燥時圧縮機回転数Rcdとするとともに室外ファン27の回転数を内部乾燥時室外ファン回転数Rfodとし、CPU310が室内ファン33の回転数を内部乾燥時室内ファン回転数Rfidとする。尚、以上説明したST8およびST9の各処理が、内部乾燥運転に関わる処理である。
2 室外機
3 室内機
10 冷媒回路
21 圧縮機
23 室外熱交換器
24 室外膨張弁
27 室外ファン
31 室内熱交換器
31a 第1熱交換部
31a1 フィン
31a2 伝熱管
31b 第2熱交換部
31b1 フィン
31b2 伝熱管
32 室内膨張弁
33 室内ファン
200 室外機制御手段
210 CPU
300 室内機制御手段
310 CPU
Dop 冷房/除湿時開度
Dip 内部乾燥時開度
Rca 冷房/除湿時圧縮機回転数
Rcd 内部乾燥時圧縮機回転数
Rfoa 冷房/除湿時室外ファン回転数
Rfod 内部乾燥時室外ファン回転数Rfod
Rfia 冷房/除湿時室内ファン回転数
Rfid 内部乾燥時室内ファン回転数Rfid
tp 乾燥運転時間
Claims (3)
- 室外機と、室内熱交換器と減圧装置とを有する室内機とを有し、
前記室内熱交換器は、第1熱交換部と第2熱交換部とを有し、
前記減圧装置が、前記第1熱交換部と前記第2熱交換部との間に接続され、
前記第1熱交換部と前記第2熱交換部とが蒸発器として機能する冷房運転あるいは除湿運転と、前記第1熱交換部が凝縮器として機能するとともに前記第2熱交換部が蒸発器として機能する再熱除湿運転を行う空気調和機であって、
前記第2熱交換部には滑水化処理が施される、
ことを特徴とする空気調和機。 - 前記冷房運転あるいは前記除湿運転を行った後に前記空気調和機の運転を停止する場合、前記再熱除湿運転を行って前記室内機の内部を乾燥させる、
ことを特徴とする請求項1に記載の空気調和機。 - 前記第1熱交換部には、親水化処理が施される、
ことを特徴とする請求項1あるいは請求項2のいずれかに記載の空気調和機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/965,515 US20210048200A1 (en) | 2018-02-08 | 2018-10-12 | Air conditioner |
EP18904849.9A EP3751217B1 (en) | 2018-02-08 | 2018-10-12 | Air conditioner |
CN201880088606.1A CN111684217A (zh) | 2018-02-08 | 2018-10-12 | 空调机 |
AU2018407640A AU2018407640B2 (en) | 2018-02-08 | 2018-10-12 | Air conditioner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018021213A JP6724935B2 (ja) | 2018-02-08 | 2018-02-08 | 空気調和機 |
JP2018-021213 | 2018-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019155685A1 true WO2019155685A1 (ja) | 2019-08-15 |
Family
ID=67549379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/038110 WO2019155685A1 (ja) | 2018-02-08 | 2018-10-12 | 空気調和機 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210048200A1 (ja) |
EP (1) | EP3751217B1 (ja) |
JP (1) | JP6724935B2 (ja) |
CN (1) | CN111684217A (ja) |
AU (1) | AU2018407640B2 (ja) |
WO (1) | WO2019155685A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6705522B1 (ja) * | 2019-02-27 | 2020-06-03 | ダイキン工業株式会社 | 空気調和機 |
US11359845B2 (en) * | 2020-01-06 | 2022-06-14 | Haler US Appliance Solutions, Inc. | Method for defrosting an air conditioner unit |
EP3882524B1 (en) * | 2020-03-16 | 2023-11-08 | Mitsubishi Electric Corporation | Air conditioning system |
JP7435978B2 (ja) * | 2020-07-20 | 2024-02-21 | 国立大学法人京都大学 | 熱交換器及び冷凍サイクル装置 |
JPWO2022244188A1 (ja) * | 2021-05-20 | 2022-11-24 | ||
JPWO2023084658A1 (ja) * | 2021-11-10 | 2023-05-19 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003014334A (ja) | 2001-06-27 | 2003-01-15 | Toshiba Kyaria Kk | 空気調和機及びその室内ユニットの乾燥運転方法 |
JP2007205656A (ja) * | 2006-02-02 | 2007-08-16 | Toshiba Kyaria Kk | 空気調和機の室内機 |
JP2008121997A (ja) * | 2006-11-13 | 2008-05-29 | Fujitsu General Ltd | 空気調和機 |
WO2016056076A1 (ja) * | 2014-10-08 | 2016-04-14 | 三菱電機株式会社 | 除湿装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1288388C (zh) * | 2003-06-11 | 2006-12-06 | 河南新飞电器有限公司 | 制冷空调恒湿方法及实现该方法的制冷恒湿空调 |
JP2007085704A (ja) * | 2005-09-26 | 2007-04-05 | Daikin Ind Ltd | 空気調和装置 |
JP2009008285A (ja) * | 2007-06-26 | 2009-01-15 | Daikin Ind Ltd | 空気調和装置 |
JP2010014288A (ja) * | 2008-07-01 | 2010-01-21 | Toshiba Carrier Corp | 空気調和機 |
JP2010094169A (ja) * | 2008-10-14 | 2010-04-30 | Panasonic Corp | 除湿加温装置および除湿加温装置を具備した乾燥装置 |
US9958194B2 (en) * | 2011-10-03 | 2018-05-01 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus with a heating unit for melting frost occurring in a heat exchanger |
JP6400378B2 (ja) * | 2014-08-07 | 2018-10-03 | 東芝ライフスタイル株式会社 | 空気調和機 |
-
2018
- 2018-02-08 JP JP2018021213A patent/JP6724935B2/ja active Active
- 2018-10-12 EP EP18904849.9A patent/EP3751217B1/en active Active
- 2018-10-12 CN CN201880088606.1A patent/CN111684217A/zh active Pending
- 2018-10-12 WO PCT/JP2018/038110 patent/WO2019155685A1/ja unknown
- 2018-10-12 AU AU2018407640A patent/AU2018407640B2/en active Active
- 2018-10-12 US US16/965,515 patent/US20210048200A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003014334A (ja) | 2001-06-27 | 2003-01-15 | Toshiba Kyaria Kk | 空気調和機及びその室内ユニットの乾燥運転方法 |
JP2007205656A (ja) * | 2006-02-02 | 2007-08-16 | Toshiba Kyaria Kk | 空気調和機の室内機 |
JP2008121997A (ja) * | 2006-11-13 | 2008-05-29 | Fujitsu General Ltd | 空気調和機 |
WO2016056076A1 (ja) * | 2014-10-08 | 2016-04-14 | 三菱電機株式会社 | 除湿装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3751217A4 |
Also Published As
Publication number | Publication date |
---|---|
EP3751217B1 (en) | 2024-01-24 |
JP6724935B2 (ja) | 2020-07-15 |
JP2019138522A (ja) | 2019-08-22 |
AU2018407640B2 (en) | 2021-09-23 |
US20210048200A1 (en) | 2021-02-18 |
AU2018407640A1 (en) | 2020-08-27 |
EP3751217A1 (en) | 2020-12-16 |
EP3751217A4 (en) | 2021-10-13 |
CN111684217A (zh) | 2020-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019155685A1 (ja) | 空気調和機 | |
CN112823262B (zh) | 空调机 | |
CN105526638B (zh) | 除湿机 | |
JP4516037B2 (ja) | 空気調節装置 | |
EP2213362A1 (en) | Humidity control device | |
EP1705433A1 (en) | Air conditioner | |
JP4107333B2 (ja) | 天井設置型空気調和装置 | |
JP2019032132A (ja) | 空気調和機 | |
EP1806542A1 (en) | Air conditioner | |
JP2017155953A (ja) | 空気調和装置 | |
JP2017044424A (ja) | 空気調和機 | |
JP4548979B2 (ja) | 空気調和機 | |
JP7094061B2 (ja) | 環境試験装置及びその運転方法 | |
JP2004360951A (ja) | 空気調和機 | |
JPH0719514A (ja) | 空気調和装置の室内ユニット | |
JP2008075998A (ja) | 空気調和装置 | |
KR100569548B1 (ko) | 공기 조화기 | |
JP2007285628A (ja) | 空調調和装置 | |
WO2021039149A1 (ja) | 除湿機能付き熱交換形換気装置 | |
JP7126611B2 (ja) | 空気調和装置 | |
JP2006153321A (ja) | ヒートポンプ式空調機 | |
WO2023085166A1 (ja) | 空気調和装置 | |
JP2005172264A (ja) | 水熱源ヒートポンプ式空調機 | |
JP7031651B2 (ja) | 空気調和機 | |
JP4572470B2 (ja) | 空気調和機の運転制御方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18904849 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2018407640 Country of ref document: AU Date of ref document: 20181012 Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2018904849 Country of ref document: EP Effective date: 20200908 |