CN107923646B - Refrigerating plant - Google Patents
Refrigerating plant Download PDFInfo
- Publication number
- CN107923646B CN107923646B CN201680047774.7A CN201680047774A CN107923646B CN 107923646 B CN107923646 B CN 107923646B CN 201680047774 A CN201680047774 A CN 201680047774A CN 107923646 B CN107923646 B CN 107923646B
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- China
- Prior art keywords
- heat exchanger
- temperature
- outdoor heat
- defrosting
- indoor
- 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.)
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- 238000010257 thawing Methods 0.000 claims abstract description 101
- 239000003507 refrigerant Substances 0.000 claims description 45
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
-
- 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
- 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
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
-
- 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
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/70—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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- 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
- F25B2700/11—Sensor to detect if defrost is necessary
-
- 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
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
-
- 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
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention prevent from carrying out outdoor heat exchanger not frost when enter the empty defrosting of defrosting operating.Refrigerating plant is configured to enter the defrosting operating of the defrosting of outdoor heat exchanger (13) when meeting the 1st necessary condition and 2 necessary condition, 1st necessary condition, which refers to, detects that the state that indoor heat exchanger constant temperature reduces continue for the 1st setting time with temperature sensor (33) by indoor heat exchanger, and the 2nd necessary condition, which refers to, continue for the 2nd setting time with the state that temperature sensor (23) detects that outdoor heat exchanger constant temperature reduces by outdoor heat exchanger.
Description
Technical field
The present invention relates to the refrigerating plants with refrigerating circuit.
Background technique
In the past, defrosting operating is carried out in refrigerating plant, is attached to the frost of outdoor heat exchanger to remove.For example, such as
Patent document 1 (Japanese Unexamined Patent Publication 9-243210 bulletin) or patent document 2 (Japanese Unexamined Patent Publication 10-103818 bulletin) etc.
It is attached for removing to determine whether to enter in order to understand the state for being in outdoor heat exchanger and starting frost as open
In outdoor heat exchanger frost defrosting operating, carry out detection outdoor heat exchanger temperature drop to specified value feelings below
Condition.
Summary of the invention
Problems to be solved by the invention
In the refrigerating plant documented by patent document 1 or patent document 2, except the temperature of outdoor heat exchanger is in specified value
Other than condition below, the temperature of indoor heat exchanger also has been added below specified value or compressor to the condition to defrost
Operating frequency it is such as the following in specified value, and consider compressor operating frequency or external air temperature or outside air humidity and
It is set into the outdoor heat exchanger temperature of defrosting operating.But according to as documented by patent document 1 or patent document 2
When condition carries out control and makes to enter defrosting operating, cannot be enough to prevent outdoor heat exchanger not frost when enter defrosting operating
Sky defrosting (wasteful defrosting).So-called empty defrosting, in other words refers to the defrosting of mistake.
Project of the invention be prevent from carrying out outdoor heat exchanger not frost when enter the empty defrosting of defrosting operating.
The means used to solve the problem
The refrigerating plant of the first aspect of the present invention includes refrigerating circuit, and refrigerant can be made according to compressor, interior
The sequence of heat exchanger, expansion mechanism and outdoor heat exchanger flows through and steam compression type refrigerating cycle is repeated；1st sensing
Device is able to detect the indoor heat exchanger temperature of indoor heat exchanger；And the 2nd sensor, it is able to detect outdoor heat and hands over
The outdoor heat exchanger temperature of parallel operation, the refrigerating plant are configured to enter when meeting the 1st necessary condition and 2 necessary condition
The defrosting of the defrosting of outdoor heat exchanger operates, and the 1st necessary condition, which refers to, detects indoor heat exchange by the 1st sensor
The state that device constant temperature reduces continue for the 1st setting time, and the 2nd necessary condition, which refers to, detects room by the 2nd sensor
The state that outer heat-exchanger constant temperature reduces continue for the 2nd setting time.
In the refrigerating plant, not only the 1st necessary condition and also by the 2nd necessary condition be set as enter defrosting operating article
Part, it is thus possible to remove following situation from abruptly entering and (charging into) in the case where defrosting operates, that is, although indoor heat exchanger
The reasons why temperature is due to other than outdoor heat exchanger frost and reduce, but the temperature of outdoor heat exchanger is due to outdoor heat exchanger
Not frost and the case where rise, the 1st necessary condition, which refers to, detects that indoor heat exchanger constant temperature drops by the 1st sensor
Low state continue for the 1st setting time, and the 2nd necessary condition, which refers to, detects outdoor heat exchanger temperature by the 2nd sensor
The state that spending persistently reduces continue for the 2nd setting time.
The refrigerating plant of the second aspect of the present invention is the refrigerating plant according to first aspect, and the refrigerating plant exists
The situation that average value of the outdoor heat exchanger temperature detected by the 2nd sensor within the regulation sampling time does not rise persistently is advised
In the case where determining number or more, it is judged to meeting the 2nd necessary condition.
In the refrigerating plant, due to using average value of the outdoor heat exchanger temperature within the regulation sampling time, thus
Inhibit the measurement noise due to outdoor heat exchanger temperature and is judged to meeting the mistake of the 2nd necessary condition.
The refrigerating plant of the third aspect of the present invention is the refrigerating plant according to first aspect, and the refrigerating plant is also
With the 3rd sensor, the 3rd sensor is able to detect the external air temperature for being provided with the position of outdoor heat exchanger, described
Refrigerating plant is configured to the outdoor heat exchanger temperature that the 2nd sensor detects charging into temperature as the 3rd necessity lower than defrosting
Condition, enters defrosting operating when meeting the 1st necessary condition and the 2nd necessary condition and 3 necessary condition at the same time, the defrosting is prominent
Enter the operating frequency that temperature is the external air temperature and compressor that detect according to the 3rd sensor to set.
In the refrigerating plant, outdoor heat exchanger temperature is lower than the operating frequency according to external air temperature and compressor
The defrosting of rate setting charges into temperature as the 3rd necessary condition, it is thus possible to also consider that the environment for generating frost judges whether to enter
Defrosting operating.
The refrigerating plant of the fourth aspect of the present invention is the refrigerating plant according to the third aspect, and the 3rd necessary condition is
Refer to and continues the 3rd setting time during outdoor heat exchanger temperature charges into temperature lower than defrosting.
In the refrigerating plant, the 3rd setting is not continued during outdoor heat exchanger temperature charges into temperature lower than defrosting
When the time, even the 1st necessary condition of satisfaction and the 2nd necessary condition also do not enter defrosting operating, it is thus possible to whether enter
The operational situation of external air temperature and compressor is embodied in the judgement of defrosting operating.
Invention effect
In the refrigerating plant of the first aspect of the present invention, can prevent carry out outdoor heat exchanger not frost when enter
The empty defrosting of defrosting operating.
It, can be stable against the empty defrosting of progress in the refrigerating plant of the second aspect of the present invention.
In the refrigerating plant of the third aspect of the present invention, the environment of frost is generated by also considering, is easy to prevent from carrying out
Sky defrosting.
In the refrigerating plant of the fourth aspect of the present invention, prevent the effect for carrying out empty defrosting from improving.
Detailed description of the invention
Fig. 1 is the perspective view for showing the appearance of air conditioner of embodiment.
Fig. 2 is the loop diagram for showing the summary of the structure of air conditioner of embodiment.
Fig. 3 is the cross-sectional view along the I-I line cutting in Fig. 1.
Fig. 4 is the timing diagram (timing for showing the summary of interaction of the main signal between outdoor unit and indoor unit
chart)。
Fig. 5 is the curve graph for showing an example of outdoor heat exchanger temperature changed over time.
Fig. 6 is the flow chart for the summary for illustrating to abruptly enter the determination method of defrosting operating.
Fig. 7 is the flow chart for an example for illustrating to abruptly enter the determination method of defrosting operating.
Fig. 8 is another flow chart for illustrating to abruptly enter the determination method of defrosting operating.
Fig. 9 is to show the changing over time for temperature difference of indoor heat exchanger temperature and room temperature to charge into judgement with defrosting
Between relationship an example curve graph.
Figure 10 is to show the temperature difference of indoor heat exchanger temperature and room temperature to change over time to charge into defrosting and sentence
Another curve graph of the relationship between fixed.
Specific embodiment
(1) summary of the structure of air conditioner
In the following, the refrigerating plant as an embodiment of the invention, is illustrated by taking air conditioner as an example.Firstly, making
Illustrate the summary of the structure of the air conditioner of an embodiment of the invention with Fig. 1 and Fig. 2.Air conditioner 1 shown in FIG. 1 has peace
Indoor unit 2 on indoor metope WL etc. and outdoor outdoor unit 3 is set.Fig. 2 is the loop diagram of air conditioner 1.The sky
Tune machine 1 has refrigerating circuit 10, by making the refrigerant circulation in refrigerating circuit 10, is able to carry out steam compression type freezing and follows
Ring.In order to recycle refrigerant in the refrigerating circuit 10, indoor unit 2 and outdoor unit 3 are connected by connecting pipings 4.
(1-1) refrigerating circuit 10
Refrigerating circuit 10 has compressor 11, four tunnel switching valves 12, outdoor heat exchanger 13, expansion mechanism 14, accumulator
15, indoor heat exchanger 16.Refrigerant sucked from suction inlet and compresses and sprays compressed refrigerant from ejiction opening
Compressor 11 sends out the refrigerant sprayed from ejiction opening to the 1st port of four tunnel switching valves 12.
Four tunnel switching valves 12 are when air conditioner 1 carries out heating operation, according to shown in dotted line, make refrigerant in the 1st port
And the 4th while circulate between port, and refrigerant is made to circulate between the 2nd port and the 3rd port.Also, it is carried out in air conditioner 1
When refrigeration operation and when reacting cycle defrosting operating, according to shown in solid, four tunnel switching valves 12 make refrigerant in the 1st port and the
While circulation between 2 ports, refrigerant is made to circulate between the 3rd port and the 4th port.
Outdoor heat exchanger 13 has for making gas refrigerant mainly between the 2nd port of tetra- tunnel switching valve 12 of Qi Yu
The gas side entrance of circulation, and have for making liquid refrigerant mainly in the liquid that it circulates between expansion mechanism 14
Side entrance.Outdoor heat exchanger 13 is connected between the hydraulic fluid side entrance of outdoor heat exchanger 13 and gas side entrance
Heat conducting pipe (not shown) in flow refrigerant and outdoor air between carry out heat exchange.
Expansion mechanism 14 configures between outdoor heat exchanger 13 and indoor heat exchanger 16.Expansion mechanism 14 have make
The function that the refrigerant flowed between outdoor heat exchanger 13 and indoor heat exchanger 16 is expanded and depressurized.
Indoor heat exchanger 16 has for making liquid refrigerant mainly in the liquid that it circulates between expansion mechanism 14
Side entrance, and there is the gas for making gas refrigerant mainly circulate between the 4th port of tetra- tunnel switching valve 12 of Qi Yu
Side entrance.Indoor heat exchanger 16 make the hydraulic fluid side entrance for being connected to indoor heat exchanger 16 and gas side entrance it
Between heat conducting pipe 16a (referring to Fig. 3) in flow refrigerant and room air between carry out heat exchange.
Accumulator 15 is configured between the 3rd port and the suction inlet of compressor 11 of four tunnel switching valves 12.In accumulator
In 15, the refrigerant that the 3rd port of tetra- tunnel switching valve 12 of Jiang Cong flows to compressor 11 is separated into gas refrigerant and liquid refrigerating
Agent.Also, gas refrigerant is mainly supplied from accumulator 15 to the suction inlet of compressor 11.
Structure other than (1-2) refrigerating circuit 10
Outdoor unit 3 has the outdoor fan 21 of the air-flow for generating the outdoor air by outdoor heat exchanger 13.And
And outdoor unit 3 has the outdoor temperature sensor 22 of the temperature of measurement outdoor air and measures the temperature of outdoor heat exchanger 13
The outdoor heat exchanger of degree temperature sensor 23.In addition, outdoor unit 3 has control compressor 11, four tunnel switching valves 12, swollen
The outside control device 24 of swollen mechanism 14 and outdoor fan 21.The outside control device 24 is configured to for example including CPU (not
Diagram) and memory (not shown), the control of outdoor unit 3 is carried out according to program stored etc..Also, outside control device
24 connect with outdoor temperature sensor 22 and outdoor heat exchanger temperature sensor 23, to receive outdoor temperature sensor 22
And the signal related with temperature that outdoor heat exchanger temperature sensor 23 is measured.
Indoor unit 2 has the indoor fan 31 of the air-flow for generating the room air by indoor heat exchanger 16.And
And indoor unit 2 has the indoor temperature transmitter 32 of the temperature of measurement room air and measures the temperature of indoor heat exchanger 16
The indoor heat exchanger of degree temperature sensor 33.In addition, there is indoor unit 2 indoor of control indoor fan 31 to control dress
Set 34.The indoor control device 34 is configured to for example including CPU (not shown) and memory (not shown), according to what is stored
The control of the progress indoor unit 2 such as program.Also, indoor control device 34 and indoor temperature transmitter 32 and indoor heat exchanger
It is connected with temperature sensor 33, is measured to receive indoor temperature transmitter 32 and indoor heat exchanger temperature sensor 33
Signal relevant to temperature.
In addition, outside control device 24 and indoor control device 34 are configured to be connected with each other by signal wire, and energy
It is enough mutually to send or receive signal.
The specific structure of (1-3) indoor unit 2
The section of the indoor unit along the I-I line cutting in Fig. 1 is shown in FIG. 3.Indoor unit 2 has shell
(casing) 41, indoor heat exchanger 16, indoor fan 31,42, horizontal blade air filter (air filter)
(horizontal flap) 43, vertical vane 49.
Upper surface suction inlet 44 is equipped in the upper surface of shell 41.By the driving of indoor fan 31, inhaled from the upper surface
Room air near upper surface suction inlet 44 is taken into inside shell 41 by entrance 44, and is transported to cross sectional shape in the shape of falling V
Indoor heat exchanger 16.The arrow A of the dotted line of Fig. 3 is indicated from upper surface suction inlet 44 via indoor heat exchanger 16 to interior
The flowing for the room air that fan 31 conveys.
Lower surface suction inlet 45 and blow-off outlet 46 are formed in the lower surface of shell 41.Lower surface suction inlet 45 is set to than blowing
Wall side is more leaned in outlet 46, is connected to via suction passage 47 with the inside of shell 41.Using the driving of indoor fan 31, from lower surface
Room air near lower surface suction inlet 45 is taken into inside shell 41 by suction inlet 45, and is transported to room by suction passage 47
Inside heat exchanger 16.The arrow B of the dotted line of Fig. 3 indicates the Interior Space conveyed from lower surface suction inlet 45 to indoor heat exchanger 16
The flowing of gas.
Blow-off outlet 46 is set to the face side that indoor unit 2 is more leaned on than lower surface suction inlet 45, via blowout flow path 48 and shell
41 inside connection.The room air sucked from upper surface suction inlet 44 and lower surface suction inlet 45 is indoors in heat exchanger 16
After carrying out heat exchange, by blowout flow path 48 from blow-off outlet 46 to indoor blowout.The arrow C of the dotted line of Fig. 3 indicates to flow from blowout
Road 48 via room air from blow-off outlet 46 to indoor conveying flowing.
The two panels horizontal blade 43 that can be rotated relative to shell 41 is installed near blow-off outlet 46.Horizontal blade 43 is logical
It crosses blade driving to be rotated with motor (not shown), blow-off outlet 46 is opened and closed according to the operating condition of indoor unit 2.Separately
Outside, horizontal blade 43 has the function of changing the blow-off direction of room air up and down, so as to will be from the interior that blow-off outlet 46 is blown out
Air is guided to the desired direction of user.Also, being equipped near blow-off outlet 46 can be relative to the vertical of the rotation of shell 41
Blade 49.Vertical vane 49 is driven by blade and is rotated with motor (not shown), has blowing for left and right change room air
The function in direction out.
(2) summary of heating operation, refrigeration operation and reacting cycle defrosting operating
(2-1) heating operation
In the heating operation of air conditioner 1, four tunnel switching valves 12 are switched to the state of dotted line shown in Fig. 2.That is, from compression
The gas refrigerant for the high temperature and pressure that machine 11 sprays is via four tunnel switching valves, 12 inflow indoor heat exchanger 16.At this point, Indoor Thermal
Exchanger 16 plays a role as condenser.Therefore, with being flowed in heat exchanger 16 indoors, refrigerant by with Interior Space
The heat exchange of gas, it is liquid refrigerant from gas refrigerant variation that by room air heating, itself, which is cooled, and condenses.By room
The refrigerant that inside heat exchanger 16 has seized the cryogenic high pressure of temperature is depressurized by expansion mechanism 14, is changed as low-temp low-pressure
Refrigerant.Via the refrigerant of 14 inflow outdoor heat exchanger 13 of expansion mechanism and the heat exchange with outdoor air is heated
Evaporation is gas refrigerant from liquid refrigerant variation.At this point, outdoor heat exchanger 13 plays a role as evaporator.Also,
The refrigerant being mainly made of the gas refrigerant of low temperature, from outdoor heat exchanger 13 via four tunnel switching valves 12 and accumulator 15
It is inhaled into compressor 11.Refrigerant is according to compressor 11, indoor heat exchanger 16, expansion mechanism 14 and outdoor heat exchanger 13
Sequence flows through, and such steam compression type refrigerating cycle is repeated is direct circulation.
(2-2) refrigeration operation
In the refrigeration operation of air conditioner 1, four tunnel switching valves 12 are switched to the state of solid line shown in Fig. 2.That is, from compression
The gas refrigerant for the high temperature and pressure that machine 11 sprays is via four tunnel switching valves, 12 inflow outdoor heat exchanger 13.At this point, outdoor heat
Exchanger 13 plays a role as condenser.Therefore, with flowing in outdoor heat exchanger 13, refrigerant passes through empty with outdoor
The heat exchange of gas is cooled and condenses, and is liquid refrigerant from gas refrigerant variation.Temperature has been seized by outdoor heat exchanger 13
The refrigerant of the cryogenic high pressure of degree is depressurized by expansion mechanism 14, changes the refrigerant for low-temp low-pressure.Via expansion mechanism
The refrigerant of 14 inflow indoor heat exchangers 16 is by the heat exchange with room air, and by room air cooling, itself is heated
And evaporate, it is gas refrigerant from liquid refrigerant variation.At this point, indoor heat exchanger 16 plays a role as evaporator.And
And the refrigerant being mainly made of the gas refrigerant of low temperature, from indoor heat exchanger 16 via four tunnel switching valves 12 and accumulation of energy
Device 15 is inhaled into compressor 11.
The defrosting operating of (2-3) reacting cycle
Reacting cycle defrosting operating is to be removed the frost for being attached to outdoor heat exchanger 13 by carrying out heating operation
It carries out.Therefore, reacting cycle defrosting operating is switched in the way of heating operation, it is extensive again at the end of reacting cycle defrosts and operates
It is again heating operation.In reacting cycle defrosting operating, identical as refrigeration operation, four tunnel switching valves 12 are switched to reality shown in Fig. 2
The state of line.Also, in reacting cycle defrosting operating, steam compression type refrigerating cycle identical with refrigeration operation repeatedly.That is, with
Direct circulation when heating operation on the contrary, what is carried out in reacting cycle defrosting operating is reacting cycle, i.e., refrigerant according to compressor 11,
The sequence of outdoor heat exchanger 13, expansion mechanism 14 and indoor heat exchanger 16 flows through, and steam compression type freezing is repeated and follows
Ring.
When entering reacting cycle defrosting operating, as shown in figure 4, the decision of outdoor unit 3 passes through outdoor when carrying out heating operation
Side control device 24 defrosts.Charging into judgement about defrosting will be described hereinafter.When the decision of outdoor unit 3 defrosts
When, defrosting request signal SG1 is sent from the outside control device 24 of outdoor unit 3 to the indoor control device 34 of indoor unit 2.
Indoor unit 2 starts the preparation for the operating that defrosts when side control device 34 receives defrosting request signal SG1 indoors.For example,
In the case where the built-in auxiliarily electric heater of heating indoor air (not shown), indoor control device 34 disconnects electricity
In the state of soon indoor fan 31 being started after heater, the standard for the operating that defrosts is completed when electric heater is cooled
It is standby.
When being ready to complete of defrosting operating of machine 2 indoors, indoor control device 34 is sent out to outside control device 24
Send defrosting enabling signal SG2.Outside control device 24 starts the control that defrosts when receiving defrosting enabling signal SG2, to room
Inside control device 34 sends the signal SG3 indicated in defrosting.
In outdoor unit 3, at the end of in outside, control device 24 determines defrosting, from outside control device 24 to interior
The indoor control device 34 of machine 2 sends the usual notification signal SG4 that notice returns to common heating operation.It receives usually
The indoor unit 2 of notification signal SG4 restores the heating control of heating operation.
(3) judgement is charged into defrosting
The end of (3-1) reacting cycle defrosting operating
The outdoor heat exchanger temperature of reacting cycle defrosting operating and its front and back is shown in FIG. 5.In addition, the time shaft of Fig. 5
Shown in value be an example for being readily appreciated that explanation, these values according to the operating condition of external air temperature or air conditioner 1 and
Variation.When defrosting beginning, when passing through 30 seconds from the outset, the temperature of outdoor heat exchanger 13 is gradually increasing.From the outset
During frost after 30 seconds temperature to outdoor heat exchanger 13 reach 0 DEG C melts, the temperature of outdoor heat exchanger 13 is tieed up
Hold 0 DEG C.When the frost for being attached to outdoor heat exchanger 13 melts, the temperature of outdoor heat exchanger 13 is begun to ramp up.In Fig. 5,
Frost has melted at the time of have passed through 90 seconds, thus observes that temperature rises after it have passed through 90 seconds.Outside control device 24
Outdoor heat exchanger temperature is monitored using outdoor heat exchanger temperature sensor 23.Also, due to the outdoor after 90 seconds
The rising of heat exchanger temperature, when outside control device 24 detects that outdoor heat exchanger temperature reaches Ta DEG C, outside control
Device 24 processed determines the end of reacting cycle defrosting operating.
As already described, defrosting time required for terminating since defrosting to defrosting is according to external air temperature
Or air conditioner 1 operating condition and change.In other words, defrosting time is sometimes elongated shortens sometimes.Outside control device 24 is deposited
Threshold value tr is stored up, whenever carrying out reacting cycle defrosting operating, differentiation defrosting time ratio tr is short or than tr long.
Judgement is charged into the defrosting operating of (3-2) reacting cycle
(3-2-1) charges into the summary of judgement
Illustrate the summary for charging into judgement for carrying out reacting cycle defrosting operating using Fig. 6.Firstly, the indoor of indoor unit 2 is controlled
Device 34 processed measures the indoor heat exchanger temperature Tei of indoor heat exchanger 16 using indoor heat exchanger with temperature sensor 33
The outside control device 24 of (step ST1), outdoor unit 3 are handed over using outdoor heat exchanger heat outside 23 measuring chamber of temperature sensor
The outdoor heat exchanger temperature Teo (step ST2) of parallel operation 13.In addition, describing indoor heat exchanger temperature Tei's in Fig. 6
Measurement is measured prior to outdoor heat exchanger temperature Teo, but which side these measurements first carry out and be ok, can also simultaneously into
Row.
Then, judge whether indoor heat exchanger temperature Tei persistently reduces the 1st setting time (step ST3), and sentence
Whether disconnected outdoor heat exchanger temperature Teo persistently reduces the 2nd setting time (step ST4).In these judgements, the former is
The judgement of 1 necessary condition, the latter are the judgements of the 2nd necessary condition.These judge respectively side control device 34 and outdoor indoors
It is individually carried out in side control device 24, the friendship of information is carried out between indoor side control device 34 and outside control device 24
Mutually, only the result is that the control device in either side is collected, and judge whether in the control device being collected full
The 1st necessary condition of foot and the 2nd necessary condition both sides.Alternatively, being also possible to side control device 34 indoors and outside control dress
Set in 24 and to collect outdoor heat exchanger temperature Teo and indoor heat exchanger temperature Tei in the control device of a side, have about
It is made whether to meet the 1st in the control device of the data of outdoor heat exchanger temperature Teo and indoor heat exchanger temperature Tei both sides
The judgement of necessary condition and the 2nd necessary condition both sides.
The measurement of indoor heat exchanger temperature Tei and outdoor heat exchanger temperature Teo repeatedly, until meeting above-mentioned the
Until 1 necessary condition and the 2nd necessary condition.When meeting above-mentioned the 1st necessary condition and 2 necessary condition, air conditioner 1 passes through
Indoor control device 34 or the decision of outside control device 24 abruptly enter and (charge into) defrosting operating (step ST5).
The judgement that (3-2-2) outdoor heat exchanger constant temperature reduces
In the following, illustrating the concrete example for the judgement that outdoor heat exchanger constant temperature reduces using Fig. 7.Process shown in Fig. 7
Figure with flow chart shown in fig. 6 the difference is that, step ST11 and step ST12 realization judge outdoor heat exchanger temperature
The step of whether degree Teo persistently reduces 2 setting time (step ST4).In step ST11, outside control device 24 is used
Built-in sample clock generator carries out n times sampling according to the set time, calculates the average value (Σ of outdoor heat exchanger temperature Teo
Teo/n).Wherein, n is preset natural number.Calculate preset m+1 such outdoor heat exchanger temperature Teo
Average value, if as a result, the average value after one is identical as the average value before it or situation under it continues
M times, then outside control device 24 or the indoor control device 34 of information is obtained from outside control device 24, be determined as
Outdoor heat exchanger temperature Teo persistently reduces the 2nd setting time (step ST12).
(4) variation
(4-1) variation A
In the above-described embodiment, when judgement abruptly enters defrosting operating, the 1st necessary condition and the 2nd necessity will be met
Both conditions are used as condition, operate it is also possible to additional other necessary conditions to determine to abruptly enter defrosting.
Judgement shown in Fig. 8 abruptly enter defrosting operating process in, with above embodiment the difference is that,
It is made whether with charging into the step ST21 of temperature according to the defrosting of outdoor heat exchanger temperature computation and charging into temperature using defrosting
Avoid abruptly entering the step ST22 of the judgement of defrosting operating.
An example for the calculation method that temperature is charged into the defrosting of step ST21 is illustrated.Outside control device 24 uses
Outdoor temperature sensor 22 measures external air temperature Tout.Also, outside control device 24 judges external air temperature
Whether Tout, which is lower than defrosting, determines external air temperature Tdd or whether in defrosting judgement external air temperature Tdd or more.And
And outside control device 24 judges that previous defrosting time tdf compares threshold according to as above-mentioned (3-1) is illustrated
Value tr long or short.It is prominent to calculate defrosting using any one formula in four following formula (1)~(4) according to these situations
Enter temperature Tp.In formula (1)~(4), f indicates the operating frequency of compressor 11, and β, ε 1, ε 0, α 1, α 0 and υ are positive constants.
In addition, within the limits prescribed by Tp setting.In addition, the constant in formula (1)~(4) is used for according to each external air temperature
The measurement result of Tout and operating frequency f determine to make to abruptly enter the outdoor heat exchanger temperature of defrosting operating, and (temperature is charged into defrosting
Spend Tp).
In Tout < Tdd and tdf < tr, Tp=- β × f+ 1 × Tout- of ε α 1 ... (1)
In Tout>=Tdd and tdf<tr, Tp=- β × f+ 0 × Tout- of ε α 0 ... (2)
In Tout<Tdd and tdf>=tr, Tp=- β × f+ ε 1 × Tout- α 1+ υ ... (3)
In Tout >=Tdd and tdf >=tr, Tp=- β × f+ ε 0 × Tout- α 0+ υ ... (4)
Temperature Tp suitably will be charged into using the above-mentioned calculated defrosting in formula (1)~(4) and used by outdoor heat exchanger
The outdoor heat exchanger temperature Teo that temperature sensor 23 detects is compared, and is set if the state of Teo≤Tp continue for the 3rd
It fixes time, then the decision of outside control device 24 abruptly enters reacting cycle defrosting operating (step ST22).
(4-2) variation B
In the above-described embodiment, it when judgement abruptly enters defrosting operating, as the 1st necessary condition, is handed over Indoor Thermal
Parallel operation temperature Tei is illustrated for persistently reducing the 1st setting time.But judging indoor heat exchanger temperature Tei
Lasting reduction when, indoor heat exchanger temperature Tei is influenced by room temperature Tin, thus room temperature also can be used
Tin is modified.That is, in the case where heat exchanger temperature Tei persistently reduces the 1st setting time indoors, such as include root
It is persistently reduced according to the temperature difference Δ Tei that the difference (=Tei-Tin) of indoor heat exchanger temperature Tei and room temperature Tin defines
The case where 1 setting time.
Specifically, first indoor control device 34 calculate sampled according to the set time obtained by temperature difference Δ Tei it is flat
Mean value.Also, indoor control device 34 is judged as satisfaction the 1st when the average value of temperature difference Δ Tei continuously reduces k times
Necessary condition.By carrying out such judgement, indoor heat exchanger can be judged while considering the influence of room temperature Tin
The lasting reduction of temperature Tei.
(4-3) variation C
In above-mentioned variation B, illustrate continuously to reduce the average value Av Δ Tei of temperature difference Δ Tei k times as the
The case where 1 necessary condition.But in such judgement, such as when the case where considering k=5, as shown in figure 9, in temperature difference
At the time of the average value Av Δ Tei of Δ Tei continuously reduces 5 times from moment t21 at the time of t22, meet what defrosting was charged into
1st necessary condition.
However, according to type, it is sometimes desirable to meet the 1st necessary condition that defrosting is charged at point Q shown in Fig. 9.Cause
The average value Av Δ Tei of temperature difference Δ Tei is continuously reduced k times in variation C or temperature difference Δ Tei is averaged by this
Only the 1st setting time Ts1 does not rise value Av Δ Tei, as meet 1 necessary condition the case where.In this case, even if not
Meet the former condition, as shown in Figure 10, during moment t31~moment t32, the average value Av Δ Tei of temperature difference Δ Tei
Also do not rise and maintain identical value or reduction.It is charged into this way, meeting defrosting compared with Fig. 9 with opportunity (timing) earlier
1st necessary condition.
(5) feature
(5-1) as described above, in the air conditioner 1 of the example of the refrigerating plant as embodiment, enters
1st necessary condition of defrosting operating refers to the room that indoor heat exchanger 16 is detected by indoor heat exchanger temperature sensor 33
The state that inside heat exchanger temperature Tei is persistently reduced continue for the 1st setting time.In addition, the 2nd necessary condition refers to by outdoor heat
The state that exchanger temperature sensor 23 detects that the outdoor heat exchanger temperature Teo of outdoor heat exchanger 13 is persistently reduced is held
The 2nd setting time is continued.Wherein, indoor heat exchanger temperature sensor 33 is the 1st sensor, outdoor heat exchanger temperature
Sensor 23 is the 2nd sensor.Also, not only the 1st necessary condition and also by the 2nd necessary condition be set as enter defrosting operating
Condition.Therefore, following situation can be removed in the case where abruptly entering defrosting operating, that is, although indoor heat exchanger 16
Temperature due to other than the frost of outdoor heat exchanger 13 the reasons why and reduce, but the temperature of outdoor heat exchanger 13 is due to outdoor heat
Exchanger 13 not frost and the case where rise.
(5-2) is being provided in above-mentioned air conditioner 1 using the outdoor heat exchanger temperature Teo of outdoor heat exchanger 13
In other words average value in sampling time uses the average value (Σ for the outdoor heat exchanger temperature for only having sampled stipulated number n
Teo/n).As a result, being able to suppress the measurement noise due to outdoor heat exchanger temperature Teo and being judged as that satisfaction the 2nd is necessary
The mistake of condition, can be stable against the empty defrosting of progress.
(5-3) is lower than basis in above-mentioned air conditioner 1, by the outdoor heat exchanger temperature Teo of outdoor heat exchanger 13
The operating frequency f of external air temperature Tout and compressor 11 and the defrosting set charge into temperature Tp as the 3rd necessary condition.By
In use such 3rd necessary condition, it is thus possible to also consider generate frost environment be made whether enter defrosting operating sentencing
It is fixed, so being easy to prevent from carrying out empty defrosting.
(5-4) in above-mentioned air conditioner 1, outdoor heat exchanger temperature Teo lower than defrosting charge into temperature Tp during
When not continuing 3 setting time, even the 1st necessary condition of satisfaction and the 2nd necessary condition also do not enter defrosting operating.Its result
It is that the operational situation of external air temperature Tout and compressor 11 can be embodied in the judgement for whether entering defrosting operating,
Prevent the effect for carrying out empty defrosting from improving.
Label declaration
1 air conditioner；2 indoor units；3 outdoor units；10 refrigerating circuits；11 compressors；12 4 tunnel switching valves；Heat exchange outside Room 13
Device；14 expansion mechanisms；16 indoor heat exchangers；21 outdoor fans；22 outdoor temperature sensor；23 outdoor heat exchanger temperature
Sensor；24 outside control devices；31 indoor fans；32 indoor temperature transmitters；33 indoor heat exchanger temperature sensing
Device；34 indoor control devices.
Citation
Patent document:
Patent document 1: Japanese Unexamined Patent Publication 9-243210 bulletin
Patent document 2: Japanese Unexamined Patent Publication 10-103818 bulletin
Claims (1)
1. a kind of refrigerating plant, comprising:
Refrigerating circuit (10), can make refrigerant according to compressor (11), indoor heat exchanger (16), expansion mechanism (14) and
The sequence of outdoor heat exchanger (13) flows through and steam compression type refrigerating cycle is repeated；
1st sensor (33) is able to detect the indoor heat exchanger temperature of the indoor heat exchanger；And
2nd sensor (23) is able to detect the outdoor heat exchanger temperature of the outdoor heat exchanger,
The refrigerating plant is configured to when meeting the 1st necessary condition and 2 necessary condition into the outdoor heat exchanger
The defrosting of defrosting operates, and the 1st necessary condition, which refers to, detects the indoor heat exchanger temperature by the 1st sensor
The state persistently reduced continue for the 1st setting time, the 2nd necessary condition refer to detected by the 2nd sensor it is described
The state that outdoor heat exchanger constant temperature reduces continue for the 2nd setting time,
The refrigerating plant is in the outdoor heat exchanger temperature detected by the 2nd sensor within the regulation sampling time
The situation that does not rise of average value continue stipulated number or more in the case where, be judged to meeting the 2nd necessary condition.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015161207A JP6119811B2 (en) | 2015-08-18 | 2015-08-18 | Refrigeration equipment |
| JP2015-161207 | 2015-08-18 | ||
| PCT/JP2016/073565 WO2017030068A1 (en) | 2015-08-18 | 2016-08-10 | Refrigeration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107923646A CN107923646A (en) | 2018-04-17 |
| CN107923646B true CN107923646B (en) | 2019-02-01 |
Family
ID=58051735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680047774.7A Expired - Fee Related CN107923646B (en) | 2015-08-18 | 2016-08-10 | Refrigerating plant |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20180238578A1 (en) |
| EP (1) | EP3339761A4 (en) |
| JP (1) | JP6119811B2 (en) |
| CN (1) | CN107923646B (en) |
| AU (1) | AU2016309268A1 (en) |
| BR (1) | BR112018001930A2 (en) |
| WO (1) | WO2017030068A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017134807A1 (en) * | 2016-02-05 | 2017-08-10 | 三菱電機株式会社 | Air conditioner |
| JP6477802B2 (en) * | 2017-08-08 | 2019-03-06 | ダイキン工業株式会社 | Refrigeration equipment |
| CN108644971B (en) * | 2018-03-21 | 2020-11-10 | 珠海格力电器股份有限公司 | Control method and device for defrosting of air conditioner, storage medium and processor |
| CN110631198B (en) * | 2018-06-25 | 2021-06-01 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN109916000B (en) * | 2019-03-20 | 2020-04-28 | 珠海格力电器股份有限公司 | Defrosting control method and device for air conditioner, air conditioner and storage medium |
| CN112050356B (en) * | 2019-06-06 | 2022-08-19 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN112050367B (en) * | 2019-06-07 | 2022-07-19 | 重庆海尔空调器有限公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN112050372A (en) * | 2019-06-07 | 2020-12-08 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN112050371A (en) * | 2019-06-07 | 2020-12-08 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN112050373A (en) * | 2019-06-07 | 2020-12-08 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN112050369B (en) * | 2019-06-07 | 2022-11-18 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110454916B (en) * | 2019-08-19 | 2022-03-25 | 广东美的制冷设备有限公司 | Defrosting method of air conditioner and air conditioner |
| CN110500713B (en) * | 2019-08-22 | 2020-12-22 | 珠海格力电器股份有限公司 | Defrosting control method and device for ensuring continuous heating and multi-split system |
| CN111156661B (en) * | 2020-01-03 | 2020-12-04 | 珠海格力电器股份有限公司 | Air conditioner heating operation control method, computer readable storage medium and air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858637A (en) * | 2010-05-28 | 2010-10-13 | 广州松下空调器有限公司 | Air conditioner defrosting control method and application thereof |
| CN103925675A (en) * | 2014-03-27 | 2014-07-16 | 广东美的制冷设备有限公司 | Air conditioner and judgment method and device for air conditioner in defrost mode |
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|---|---|---|---|---|
| JPS57182041A (en) * | 1981-04-30 | 1982-11-09 | Sharp Corp | Heat pump type air conditioner |
| JPS62129638A (en) * | 1985-11-28 | 1987-06-11 | Mitsubishi Electric Corp | Air conditioner |
| JPS62131134A (en) * | 1985-12-02 | 1987-06-13 | Matsushita Electric Ind Co Ltd | Method of defrosting for air conditioner |
| JPS63123941A (en) * | 1986-11-10 | 1988-05-27 | Hitachi Ltd | Defrosting operation control method for airconditioner |
| JP4553886B2 (en) * | 2006-11-24 | 2010-09-29 | 三菱電機株式会社 | Air conditioner |
| JP5088586B2 (en) * | 2009-11-18 | 2012-12-05 | ダイキン工業株式会社 | Air conditioner outdoor unit |
| JP5152158B2 (en) * | 2009-11-19 | 2013-02-27 | ダイキン工業株式会社 | Air conditioner |
-
2015
- 2015-08-18 JP JP2015161207A patent/JP6119811B2/en active Active
-
2016
- 2016-08-10 EP EP16837058.3A patent/EP3339761A4/en not_active Withdrawn
- 2016-08-10 US US15/753,310 patent/US20180238578A1/en not_active Abandoned
- 2016-08-10 BR BR112018001930-5A patent/BR112018001930A2/en not_active Application Discontinuation
- 2016-08-10 AU AU2016309268A patent/AU2016309268A1/en not_active Abandoned
- 2016-08-10 WO PCT/JP2016/073565 patent/WO2017030068A1/en active Application Filing
- 2016-08-10 CN CN201680047774.7A patent/CN107923646B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858637A (en) * | 2010-05-28 | 2010-10-13 | 广州松下空调器有限公司 | Air conditioner defrosting control method and application thereof |
| CN103925675A (en) * | 2014-03-27 | 2014-07-16 | 广东美的制冷设备有限公司 | Air conditioner and judgment method and device for air conditioner in defrost mode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6119811B2 (en) | 2017-04-26 |
| AU2016309268A1 (en) | 2018-04-19 |
| EP3339761A1 (en) | 2018-06-27 |
| WO2017030068A1 (en) | 2017-02-23 |
| JP2017040402A (en) | 2017-02-23 |
| EP3339761A4 (en) | 2018-08-08 |
| CN107923646A (en) | 2018-04-17 |
| BR112018001930A2 (en) | 2018-09-25 |
| US20180238578A1 (en) | 2018-08-23 |
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