CN107250679B - Conditioner - Google Patents
Conditioner Download PDFInfo
- Publication number
- CN107250679B CN107250679B CN201580075922.1A CN201580075922A CN107250679B CN 107250679 B CN107250679 B CN 107250679B CN 201580075922 A CN201580075922 A CN 201580075922A CN 107250679 B CN107250679 B CN 107250679B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- fan
- outdoor heat
- compressor
- operating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- F24F11/62—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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
- 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
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/60—Energy consumption
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
-
- 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
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/15—Power, e.g. by voltage or current
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)
Abstract
The purpose of the present invention is to provide it is a kind of it is compared with the past can efficiency carry out the conditioner of defrosting operating well.The conditioner (100) is made up of connect compressor (1), outdoor heat exchanger (3), indoor heat exchanger (5) and four-way valve (2), the four-way valve is arranged on than outdoor heat exchanger (3) by the discharge side of compressor (1) and than indoor heat exchanger (5) by the position of the discharge side of compressor (1), wherein, the conditioner has: fan (31), blows to outdoor heat exchanger (3)；Power supply device is supplied electric power to fan (31)；Fan input detection unit detects physical quantity associated with the electric power for being supplied to fan (31)；And control unit (80), it controls four-way valve (2), so as to make outdoor heat exchanger (3) as evaporator function the 1st operating and make outdoor heat exchanger (3) as condenser function the 2nd operating switch over, on the basis of the physical quantity that fan input detection unit detects more than amount, 1st operating is switched to the 2nd operating, control unit (80) adjusts the datum quantity, the datum quantity in the case that temperature to flow through the refrigerant of outdoor heat exchanger (3) is high be less than the refrigerant for flowing through outdoor heat exchanger (3) temperature it is low in the case where the datum quantity.
Description
Technical field
The present invention relates to conditioners.
Background technique
In the past, have following conditioner: the conditioner detects outdoor fan horse in heating operation
The revolving speed of the current value and outdoor fan that reach, and according to the current value of outdoor fan motor become reference current value more than or
The revolving speed of outdoor fan has dropped desired speed to determine the beginning (referring to patent document 1) of defrosting operating.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2009-58222 bulletin
Summary of the invention
Subject to be solved by the invention
But in the air conditioner documented by patent document 1, due to predefining reference current value, so in room
In the case that the efficiency of the aging of external fan motor and outdoor fan motor has dropped, it can not consider that the decline with rotation speed of the fan is accompanied
Fan input reduction the case where etc. change reference current value.Accordingly, there exist can not be in heating operation appropriate fixed
When be transferred to defrosting and operate such project.That is, there are projects as defrosting efficiency difference.
The present invention is made using the above subject as background, described its purpose is to provide a kind of conditioner
Conditioner it is compared with the past can efficiency carry out defrosting operating well.
Means for solving the problems
Conditioner of the invention is by connect compressor, outdoor heat exchanger, indoor heat exchanger and to cut
It changes unit and constitutes, the switch unit is arranged on the discharge side and ratio for leaning on the compressor than the outdoor heat exchanger
The indoor heat exchanger is by the position of the discharge side of the compressor, wherein the conditioner has: fan, institute
Fan is stated to blow to the outdoor heat exchanger；Power supply device, the power supply device are supplied electric power to the fan；Fan input
Detection unit, the fan input detection unit pair physical quantity associated with the electric power for being supplied to the fan detect；
And control unit, described control unit control the switch unit, so as to make the outdoor heat exchanger as evaporator
The 1st functioned operates and the outdoor heat exchanger is made to function the 2nd operating as condenser and switch over, described
In the case where more than measuring on the basis of the physical quantity that fan input detection unit detects, the 1st operating is switched to the described 2nd
Operating, described control unit adjusts the datum quantity, to flow through the high feelings of the temperature of refrigerant of the outdoor heat exchanger
The datum quantity under condition be less than the refrigerant for flowing through the outdoor heat exchanger temperature it is low in the case where the datum quantity.
Invention effect
Conditioner of the invention has control unit, and described control unit controls the switch unit, so as to right
Make the outdoor heat exchanger as evaporator function the 1st operating and make the outdoor heat exchanger as condenser hair
The 2nd operating for waving function switches over, the feelings on the basis of physical quantity that the fan input detection unit detects more than amount
Under condition, the 1st operating is switched to the 2nd operating, described control unit adjusts the datum quantity, to flow through the room
The datum quantity in the case that the temperature of the refrigerant of outer heat-exchanger is high is less than the refrigeration for flowing through the outdoor heat exchanger
The datum quantity in the case that the temperature of agent is low.Therefore, it can be opened in the case where carrying out heating operation in timing appropriate
Begin to defrost and operate.Therefore, compared with the past, can efficiency carry out defrosting operating well.
Detailed description of the invention
Fig. 1 is the skeleton diagram for indicating the conditioner 100 of embodiments of the present invention 1.
Fig. 2 be indicate embodiments of the present invention 1 conditioner 100 with by time associated frosting degree with
And the figure of the variation of total electricity value.
Fig. 3 be indicate embodiments of the present invention 1 conditioner 100 with by time associated frosting degree with
And the figure of the variation of total current value.
Fig. 4 is the amount of power associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
The figure of variation.
Fig. 5 is the total amount of power associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
Variation figure.
Fig. 6 is to indicate that the outdoor heat exchanger 3 of the conditioner 100 in embodiments of the present invention 1 is attached with frost
State skeleton diagram.
Fig. 7 is the relative humidity for indicating the conditioner 100 of embodiments of the present invention 1With the pass of white density p
The figure of system.
Fig. 8 is the refrigerant temperature for indicating the conditioner 100 of embodiments of the present invention 1 and required defrosting heat
Relationship figure.
Fig. 9 is the compressor 1 associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
Frequency variation figure.
Figure 10 is the compressor 1 associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
Frequency variation figure.
Specific embodiment
Embodiment 1.
Hereinafter, conditioner 100 of the invention is described in detail using attached drawing.In addition, below attached
In figure, the size relation of each structural elements is sometimes different from actual size relation.In addition, in the following figures, being labeled with
The component of identical appended drawing reference is identical component or comparable component therewith, this is general in the full text of specification
's.In addition, the mode of the structural element shown in the specification only example, the present invention is not limited to these notes
It carries.
Fig. 1 is the skeleton diagram for indicating the conditioner 100 of embodiments of the present invention 1.As shown in Figure 1, air tune
Regulating device 100 has compressor 1, four-way valve 2, outdoor heat exchanger 3, expansion valve 4 and indoor heat exchanger 5.Such as pass through
It is sequentially connected compressor 1, four-way valve 2, outdoor heat exchanger 3, expansion valve 4 and indoor heat exchanger 5 with piping, to constitute
Refrigerant circuit 90.
Compressor 1 be the refrigerant of sucking is compressed and make its as high temperature and the refrigerant of high pressure be discharged can
The compressor of varying capacity.Four-way valve 2 is, for example, that can correspondingly be discharged to from compressor 1 with heating operation, refrigeration operation is executed
Refrigerant the switch unit that switches over of flow direction.Four-way valve 2 is provided in outdoor heat exchanger 3 by compressor 1
Discharge side and than indoor heat exchanger 5 by compressor 1 discharge side position.In Fig. 1, to switch four-way valve 2 to carry out
It is illustrated for the state of refrigeration operation.In addition, the solid arrow of Fig. 1 indicates the stream of refrigerant when carrying out refrigeration operation
It is dynamic.In addition, the dotted arrow of Fig. 1 indicates the flowing of refrigerant when carrying out heating operation.
Outdoor heat exchanger 3 be functioned in refrigeration operation as condenser, in heating operation as evaporator
The heat exchanger functioned.Outside fan 31 is the air-supply for supplying extraneous gas to outdoor heat exchanger 3 and forming air-flow
Unit.Outside fan 31 is for example made of aerofoil fan or centrifugal fan.By being carried out to outside motor (illustration omitted)
Driving, so that outside fan 31 be made to rotate.In the air supplied from outside fan 31 and flow through in outdoor heat exchanger 3
Heat exchange is carried out between the refrigerant in portion.Outside fan 31 is driven by the power supply device (illustration omitted) supplied electric power.
Expansion valve 4 is used for the refrigerant decompression expansion for making to flow out from outdoor heat exchanger 3 in refrigeration operation, transports in heating
Make the refrigerant decompression expansion flowed out from indoor heat exchanger 5 when turning.
Indoor heat exchanger 5 be functioned in refrigeration operation as evaporator, in heating operation as condenser
The heat exchanger functioned.Indoor fan 51 is to supply indoor air to indoor heat exchanger 5 and form sending for air-flow
Wind unit.Indoor fan 51 is for example made of aerofoil fan or centrifugal fan.By to indoor motor (illustration omitted) into
Row driving, so that indoor fan 51 be made to rotate.In the air supplied from indoor fan 51 and flow through indoor heat exchanger 5
Heat exchange is carried out between internal refrigerant.
Outside refrigerant temperature sensors 32 are detected to the temperature for the refrigerant for flowing through outdoor heat exchanger 3
Temperature detecting unit.Indoor refrigerant temperature sensors 52 are carried out to the temperature for the refrigerant for flowing through indoor heat exchanger 5
The sensor of detection.In addition, in the following description, in the case where only illustrating " refrigerant temperature ", referring to and flowing through outdoor heat
The temperature of the refrigerant of the inside of exchanger 3.
On the outside of 80 control room of control unit motor adjusts the revolving speed of outside fan 31, and motor is adjusted on the inside of control room
The revolving speed of whole indoor fan 51.Control unit 80 make to be input to the voltage of outside motor, curent change and to outside horse
Up to being controlled.Control unit 80 adjusts the revolving speed of outside fan 31, so as to adjust the wind by outdoor heat exchanger 3
Amount.
It also can be by the way that the rotation speed detection unit detected to the revolving speed of outside fan 31 be arranged come on the outside of sensing chamber
The current revolving speed of fan 31.In addition, also can be according to the electricity for being applied to the electric current of outside motor, being applied to outside motor
The information of pressure infers the current revolving speed of outside fan 31.In the following description, in the feelings for only illustrating " fan input "
Under condition, refer to object associated with the electric power for being supplied to outside fan 31 (the outside motor for rotating outside fan 31)
Reason amount.
In addition, control unit 80 for example when conditioner 100 starts running, controls outside motor,
So that outside fan 31 rotates.In addition, the hardware such as the circuit arrangement as realizing the function of control unit 80 or micro-
The software sharing executed on the arithmetic units such as type computer or CPU.
Four-way valve 2 is switched to refrigeration side by control unit 80, thereby executing refrigeration operation.Control unit 80 is by four-way valve 2
It is switched to heating side, thereby executing heating operation.In addition, in the following description, " defrosting operating " refers to that control unit 80 will
Operating when four-way valve 2 is switched to refrigeration side and stops outside fan 31.Heating operation is equivalent to " the 1st fortune of the invention
Turn ", defrosting operating is equivalent to " the 2nd operating " of the invention.
Firstly, referring to Fig.1, the flowing of refrigerant when executing refrigeration operation to conditioner 100 of the invention into
Row explanation.The refrigerant being discharged from compressor 1 is flowed into outdoor heat exchanger 3.Be flowed into the refrigerant of outdoor heat exchanger 3 with
The air progress heat exchange for being fed into outdoor heat exchanger 3 is rotated by outside fan, is flowed from outdoor heat exchanger 3
Out.The refrigerant flowed out from outdoor heat exchanger 3 is being flowed into expansion valve 4 after being depressurized, and flows out from expansion valve 4, flows into
To indoor heat exchanger 5.It is flowed into the refrigerant of indoor heat exchanger 5 and is rotated by indoor fan and be fed into interior
The air of heat exchanger 5 carries out heat exchange, flows out from indoor heat exchanger 5.The refrigerant flowed out from indoor heat exchanger 5 flows into
To compressor 1.
Next, referring to Fig.1, the flowing of refrigerant when heating operation is executed to conditioner 100 of the invention
It is illustrated.The refrigerant being discharged from compressor 1 is flowed into indoor heat exchanger 5.It is flowed into the refrigerant of indoor heat exchanger 5
Heat exchange is carried out with the air for being fed into indoor heat exchanger 5 is rotated by indoor fan, is flowed from indoor heat exchanger 5
Out.The refrigerant flowed out from indoor heat exchanger 5 is being flowed into expansion valve 4 after being depressurized, and flows out from expansion valve 4, flows into
To outdoor heat exchanger 3.It is flowed into the refrigerant of outdoor heat exchanger 3 and is rotated by outside fan and be fed into outdoor
The air of heat exchanger 3 carries out heat exchange, flows out from outdoor heat exchanger 3.The refrigerant flowed out from outdoor heat exchanger 3 flows into
To compressor 1.
Fig. 2 be indicate embodiments of the present invention 1 conditioner 100 with by time associated frosting degree with
And the figure of the variation of total electricity value.Fig. 3 be indicate embodiments of the present invention 1 conditioner 100 with by the time
The figure of the variation of associated frosting degree and total current value.
Pass through time [min] in the horizontal axis regulation of Fig. 2, provides frosting degree [g] and total amount of power [W] in the longitudinal axis of Fig. 2.
In Fig. 2, frosting degree is indicated by the solid line, and total electricity value is represented by dashed line.As shown in Fig. 2, frosting degree increases as time goes by
Add, total electricity value increases as time goes by.
Pass through time [min] in the horizontal axis regulation of Fig. 3, provides frosting degree [g] and total electricity [A] in the longitudinal axis of Fig. 3.
In Fig. 3, frosting degree is indicated by the solid line, and total current value is represented by dashed line.As shown in figure 3, frosting degree increases as time goes by
Add, total current value increases as time goes by.
Fig. 4 is the amount of power associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
The figure of variation.Fig. 5 is the total electricity associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
The figure of the variation of amount.In Fig. 4, Fig. 5, it is illustrated to the case where using amount of power to input as fan, the amount of power is
It is applied to the current value of outdoor fan motor and is applied to the product of the voltage value of outdoor fan motor.In addition, in heating operation
Processing in Shi Jinhang Fig. 4, Fig. 5.
Firstly, as shown in figure 4, control unit 80 at predetermined time intervals detects fan input, and it is defeated to calculate fan
The variable quantity entered.Specifically, the fan for example in the case where the fan input under moment (t-1) is W (t-1), moment t inputs and is
When W (t), as following formula (1.1), difference, that is, Δ W (t) of fan input is calculated.
Δ W (t)=W (t)-W (t-1) ... formula (1.1)
Next, as shown in figure 5, control unit 80 according to the following formula (1.2), adds up Δ W (t), to calculate Δ
Wtotal。
Δ Wtotal=Σ Δ W (t) ... formula (1.2)
Then, control unit 80 determines whether Δ Wtotal is threshold alpha or more as following formula (1.3).Control unit 80
In the case where being determined as Δ Wtotal is threshold alpha or more, four-way valve 2 is controlled, to start defrosting operating.In addition, control
Unit 80 processed continues heating operation in the case where being determined as the less than threshold alpha of Δ Wtotal.
Δ Wtotal >=α ... formula (1.3)
Herein, α is changed according to refrigerant temperature.Specifically, being attached to outdoor for example, assuming that refrigerant temperature is higher
The density of the frost of heat exchanger 3 is bigger, and therefore, control unit 80 reduces the value of α.Reduce the value of α, in this way so as to mention
Timing of the preceding Δ Wtotal as the value of α or more, the beginning for the operating that defrosts in advance.In addition, for example, assuming that refrigerant temperature is lower,
The density for being attached to the frost of outdoor heat exchanger 3 is smaller, and therefore, control unit 80 increases the value of α.Increase the value of α in this way,
So as to postpone timing of the Δ Wtotal as the value of α or more, the beginning of defrosting operating is postponed.In addition, in above explanation
In, the example for using power value to input as fan is illustrated, but not limited thereto.For example, it is also possible to using applying
In outdoor fan motor current value, be applied to the voltage value of outdoor fan motor as fan and input.
Fig. 6 is to indicate that the outdoor heat exchanger 3 of the conditioner 100 in embodiments of the present invention 1 is attached with frost
State skeleton diagram.As shown in fig. 6, the height for the frost for being attached to outdoor heat exchanger 3 is set as Hf_total [mm], by phase
Distance between adjacent fin 3b is set as Fp [mm].And, it is assumed that it is blown from one end side of the longitudinal direction of fin 3b to another side
The case where wind.At this point, as shown in fig. 6, since frost is attached to outdoor heat exchanger 3, so wind speed ua decaying, not attached compared to frost
In outdoor heat exchanger 3 the case where, the heat exchange in outdoor heat exchanger 3 is interfered.
In heating operation, frost is attached to the heat conducting pipe 3a and fin 3b for constituting outdoor heat exchanger 3, with the increasing of frost
Long, ventilation resistance increases, and the input of outside fan 31 increases.In addition, the temperature of heat conducting pipe 3a and fin 3b are lower, it is white
Density is smaller.That is, refrigerant temperature is lower, white density is smaller.
Therefore, in the state that fin 3b is blocked, in white density difference, it is attached to the amount of the frost of outdoor heat exchanger 3
It is different.That is, even if the blocked state of outdoor heat exchanger 3 is identical and the increasing degree of fan input is identical, when defrosting operating
Required defrosting heat is also different.Specifically, refrigerant temperature is higher, in order to melt the frost for being attached to outdoor heat exchanger 3
And required heat is more.
Fig. 7 is the relative humidity for indicating the conditioner 100 of embodiments of the present invention 1With the pass of white density p
The figure of system.In addition, the horizontal axis in Fig. 7 provides relative humidityWhite density p [kg/m is provided in the longitudinal axis of Fig. 73].In addition,
It is -30 DEG C, -20 DEG C that refrigerant temperature Ts [DEG C], which is shown in FIG. 7,.
As shown in fig. 7, relative humidityHigher, white density p is lower.In addition, the feelings for being -30 DEG C with refrigerant temperature Ts
Condition is compared, and frost occurs the case where refrigerant temperature Ts is -20 DEG C, and density p is big.That is, it can be seen that: refrigerant temperature Ts is higher, frost
Density p is bigger.Herein, when white density p becomes larger, defrosting time is elongated, when white density p becomes larger, needs bigger defrosting energy
Power.Therefore, it can be seen that: when refrigerant temperature Ts becomes larger, defrosting time is elongated.
Fig. 8 is the refrigerant temperature for indicating the conditioner 100 of embodiments of the present invention 1 and required defrosting heat
Relationship figure.As shown in figure 8, flowing through temperature and the institute of the refrigerant of the refrigerant circuit 90 of the inside of outdoor heat exchanger 3
The relationship for needing defrosting heat is proportionate relationship.
As shown in figure 8, it can be seen that: when refrigerant temperature Ts becomes larger, defrosting time is elongated.Specifically, for example flat
When equal refrigerant temperature is -40 DEG C~-30 DEG C, minimum defrosting time is 1 minute.In addition, for example in average refrigerant temperature
When being -10 DEG C~-5 DEG C, minimum defrosting time is 3 minutes.In addition, being for example -5 DEG C~0 DEG C in average refrigerant temperature
When, minimum defrosting time is 5 minutes.
In addition, in fig. 8, for ease of description, show refrigerant temperature Ts and required defrosting heat relationship be than
The example of example relationship, but it is not limited to such relationship, the increasing of opposite required defrosting heat with the increase of refrigerant temperature Ts
Amplitude is added to may not be constant.
Fig. 9 is the compressor 1 associated with the process time for indicating the conditioner 100 of embodiments of the present invention 1
Frequency variation figure.Figure 10 be indicate embodiments of the present invention 1 conditioner 100 with by the time accompany
Compressor 1 frequency variation figure.
Pass through the time in the horizontal axis regulation of Fig. 9, Figure 10, provides the frequency of compressor 1 in the longitudinal axis of Fig. 9, Figure 10.Fig. 9,
In Figure 10, the variation of the frequency of the compressor 1 when refrigerant temperature indicated by the solid line is higher, be represented by dashed line refrigerant temperature compared with
The variation of the frequency of compressor 1 when low.
Herein, it is also contemplated that: compared with the higher situation of refrigerant temperature, contract in the lower situation of refrigerant temperature
The duration of runs of short defrosting operating.But in order to which efficiency carries out defrosting operating well, need that outdoor heat exchanger will be attached to
The time that 3 frost melts and the time for falling the frost after melting from outdoor heat exchanger 3.Therefore, if refrigerant temperature
The time of the defrosting operating than the refrigerant temperature when higher time of defrosting operating when spending lower is short, then the frost after melting has can
It can freeze again.Therefore, in present embodiment 1, pair in the lower situation of refrigerant temperature with refrigerant
The identical defrosting time of the higher situation of temperature is operated, and the example for reducing the frequency of compressor 1 is illustrated.
Hereinafter, using Fig. 9, to the example of the frequency variation of the compressor 1 when operating defrosting based on refrigerant temperature into
Row explanation.In Fig. 9, the section for executing heating operation is set as section (a), the section for executing defrosting operating is set as section
(b), the section that heating operation is executed after defrosting operating is set as section (c).
As shown in figure 9, control unit 80 is in the state of being switched to heating side for four-way valve 2, to compression in section (a)
Machine 1 is controlled, so that compressor 1 becomes preset frequency.Next, predetermined with the state operating of preset frequency in compressor 1
After time, control unit 80 controls compressor 1, to reduce the frequency of compressor 1.Then, control unit 80 is being pressed
The frequency of contracting machine 1 is four-way valve 2 to be switched to refrigeration side, and start defrosting operating in the case where 0 (t11).
As shown in figure 9, in the higher situation of refrigerant temperature, control unit 80 is cut by four-way valve 2 in section (b)
It changes in the state of refrigeration side, compressor 1 is controlled, so that compressor 1 becomes preset frequency fmax.Next, pressing
After contracting machine 1 operates the predetermined time with the state of preset frequency fmax, control unit 80 controls compressor 1, to reduce
The frequency of compressor 1.Then, control unit 80 is in the case where the frequency of compressor 1 is 0 (moment t14), again by four-way valve 2
It is secondary to be switched to heating side, and start heating operation.
As shown in figure 9, in the lower situation of refrigerant temperature, control unit 80 is cut by four-way valve 2 in section (b)
It changes in the state of refrigeration side, compressor 1 is controlled, so that compressor 1 becomes preset frequency fmax.Next, pressing
Contracting machine 1 controls compressor 1 with (moment t12) after the state operating predetermined time of preset frequency fmax, control unit 80
System makes compressor 1 become preset frequency f1 to reduce the frequency of compressor 1.After compressor 1 becomes preset frequency f1
(moment t13), control unit 80 make compressor 1 operate the predetermined time with the state of preset frequency f1.In compressor 1 with predetermined frequency
After the state operating predetermined time of rate f1 (moment t13), control unit 80 controls compressor 1, to reduce compressor 1
Frequency.Then, control unit 80 again switches to four-way valve 2 in the case where the frequency of compressor 1 is 0 (moment t14)
Side is heated, and starts heating operation.
As shown in figure 9, control unit 80 is in the state of being switched to heating side for four-way valve 2, to compression in section (c)
Machine 1 is controlled, so that the frequency of compressor 1 becomes preset frequency.
Hereinafter, using Figure 10, to the example of the frequency variation of the compressor 1 when operating defrosting based on refrigerant temperature into
Row explanation.In Figure 10, the section for executing heating operation is set as section (a), the section for executing defrosting operating is set as section
(b), the section that heating operation is executed after defrosting operating is set as section (c).In addition, in Figure 10, section (a) and section
(c) variation of in the and time by the frequency of associated compressor 1 is identical as Fig. 9, so omitting the description.
As shown in Figure 10, in section (b), in the higher situation of refrigerant temperature, control unit 80 is cut by four-way valve 2
It changes in the state of refrigeration side, compressor 1 is controlled, so that compressor 1 becomes preset frequency fmax.Next, pressing
After contracting machine 1 operates the predetermined time with the state of preset frequency fmax, control unit 80 controls compressor 1, to reduce
The frequency of compressor 1.Then, control unit 80 is in the case where the frequency of compressor 1 is 0 (moment t24), again by four-way valve 2
It is secondary to be switched to heating side, and start heating operation.
As shown in Figure 10, in section (b), in the lower situation of refrigerant temperature, control unit 80 is cut by four-way valve 2
It changes in the state of refrigeration side, compressor 1 is controlled, so that compressor 1 becomes preset frequency f2.Next, compressing
Machine 1 operates (moment t23) after the predetermined time with the state (moment t22) of preset frequency f2, control unit 80 to compressor 1 into
Row control, to reduce the frequency of compressor 1.Then, (the moment in the case where the frequency of compressor 1 is 0 of control unit 80
T24), four-way valve 2 is again switched into heating side, and starts heating operation.
As described above, the conditioner 100 of present embodiment 1 be by connect compressor 1, outdoor heat exchanger 3,
Indoor heat exchanger 5 and four-way valve 2 and constitute, the four-way valve 2 is arranged on than outdoor heat exchanger 3 by compressor 1
Discharge side and than indoor heat exchanger 5 by the position of the discharge side of compressor 1, wherein the conditioner 100 has
Standby: fan 31, the fan 31 are blown to outdoor heat exchanger 3；Power supply device, the power supply device supply electricity to fan 31
Power；Fan input detection unit, the fan input detection unit pair physical quantity associated with the electric power for being supplied to fan 31
It is detected；And control unit 80, described control unit 80 control four-way valve 2, so as to make outdoor heat exchanger 3 as steam
The 1st the 2nd operating for operating and functioning outdoor heat exchanger 3 as condenser that hair device functions switches over, In
In the case where more than measuring on the basis of the physical quantity that fan input detection unit detects, the 1st operating is switched to the described 2nd
Operating, control unit 80 adjust the datum quantity, in the case where the temperature height to flow through the refrigerant of outdoor heat exchanger 3
The datum quantity in the case that the datum quantity is low less than the temperature for the refrigerant for flowing through outdoor heat exchanger 3.Therefore, can
Start defrosting operating in timing appropriate in the case where carrying out heating operation.Therefore, compared with the past, can efficiency well
Carry out defrosting operating.
In addition, the conditioner 100 of present embodiment 1 is by connect compressor 1, outdoor heat exchanger 3, interior
Heat exchanger 5 and four-way valve 2 and constitute, the four-way valve 2 be arranged on than outdoor heat exchanger 3 lean on compressor 1 row
Out side and than indoor heat exchanger 5 by compressor 1 discharge side position, wherein the conditioner 100 has: wind
Fan 31, the fan 31 are blown to outdoor heat exchanger 3；Power supply device, the power supply device are supplied electric power to fan 31；Fan
Input detection unit, the fan input detection unit pair physical quantity associated with the electric power for being supplied to fan 31 are examined
It surveys；And control unit 80, described control unit 80 control four-way valve 2, so as to make outdoor heat exchanger 3 as evaporator send out
The 2nd operating waved the 1st operating of function and function outdoor heat exchanger 3 as condenser switches over, defeated in fan
Enter measure on the basis of the physical quantity that detection unit detects it is above in the case where, the 1st operating is switched to the 2nd operating,
Control unit 80 controls the frequency of compressor 1, to flow through the high situation of the temperature of refrigerant of outdoor heat exchanger 3
Under compressor 1 frequency be greater than flow through outdoor heat exchanger 3 refrigerant temperature it is low in the case where compressor 1 frequency
Rate.Therefore, compared with the past in the case where carrying out defrosting operating, it is able to carry out the fortune that defrosts corresponding with frosting degree appropriate
Turn.Therefore, compared with the past, can efficiency carry out defrosting operating well.
Embodiment 2.
Different from embodiment 1, in present embodiment 2, defrosting operating is determined based on frosting degree Mf executes timing,
The frequency of the compressor 1 when defrosting operating is determined based on frosting degree Mf.In addition, in present embodiment 2, for not special
For the project of description, keep it identical as embodiment 1, identical function, structure are remembered using identical appended drawing reference
It states.
Based on surface area A0 [m2], frost density p f [kg/m3] and frost level degree Hf (t), frosting degree mf (t) such as following formula (2.1)
It is shown.
Mf (t)=A0 × ρ f (t) × Hf (t) ... formula (2.1)
In addition, following formula (2.1) assumes that frost is equably attached to outdoor heat exchanger 3.Surface area A0 [m2] it is outdoor heat
The heat exchange surface area of exchanger 3.In addition, frost density p f [kg/m3] it is attached to the white density of outdoor heat exchanger 3,
It will receive the influence of cold-boundary temperature, relative humidity.In addition, frost level degree Hf (t) is attached to the height of the frost of outdoor heat exchanger 3
Degree.
Based on frosting degree mf (t), shown in frosting degree Mf such as following formula (2.2).
Mf=Σ mf (t) ... formula (2.2)
Based on frosting degree Mf [kg] and latent heat Δ H [kJ/kg], defrosting heat Qf [kJ] is as shown in formula (2.3).
Qf=Mf × Δ H ... formula (2.3)
Based on defrosting heat Qf [kJ] and defrosting ability P [kW], defrosting time Tf [sec] is such as shown in following formula (2.4).
Tf=Qf/P ... formula (2.4)
As described above, the control unit 80 of the conditioner 100 of present embodiment 2 determines defrosting according to frosting degree
Time.Therefore, compared with the past, can efficiency carry out defrosting operating well.
In addition, outside fan 31 is equivalent to " fan " of the invention.
Description of symbols
1: compressor；2: four-way valve；3: outdoor heat exchanger；3a: heat conducting pipe；3b: fin；4: expansion valve；5: Indoor Thermal
Exchanger；31: outside fan；32: outside refrigerant temperature sensors；51: indoor fan；52: indoor refrigerant
Temperature sensor；80: control unit；90: refrigerant circuit；100: conditioner；A0: surface area；F1, f2, fmax: pre-
Determine frequency；Hf: frost level degree；Mf: frosting degree；Mf: frosting degree；P: defrosting ability；Qf: defrosting heat；t11,t12,t13,t14,
T21, t22, t23, t24: moment；Tf: defrosting time；Ts: surface temperature；Ua: wind speed；Δ H: latent heat；α: threshold value；ρ: frost is close
Degree；ρ f: white density；Relative humidity.
Claims (3)
1. a kind of conditioner, the conditioner is handed over by connect compressor, outdoor heat exchanger, Indoor Thermal
Parallel operation and switch unit and constitute, what the switch unit was arranged on than the outdoor heat exchanger by the compressor
Discharge side and than the indoor heat exchanger by the position of the discharge side of the compressor, wherein conditioner tool
It is standby:
Fan, the fan are blown to the outdoor heat exchanger；
Power supply device, the power supply device are supplied electric power to the fan；
Fan input detection unit, the fan input detection unit pair physics associated with the electric power for being supplied to the fan
Amount is detected；And
Control unit, described control unit control the switch unit, so as to make the outdoor heat exchanger as evaporator
The 1st operating functioned and the 2nd operating for functioning the outdoor heat exchanger as condenser switch over,
On the basis of the physical quantity that the fan input detection unit detects more than amount, the 1st operating is cut
It is changed to the 2nd operating,
Described control unit adjusts the datum quantity, to flow through the high situation of the temperature of refrigerant of the outdoor heat exchanger
Under the datum quantity be less than flow through the outdoor heat exchanger refrigerant temperature it is low in the case where the datum quantity.
2. a kind of conditioner, the conditioner is handed over by connect compressor, outdoor heat exchanger, Indoor Thermal
Parallel operation and switch unit and constitute, what the switch unit was arranged on than the outdoor heat exchanger by the compressor
Discharge side and than the indoor heat exchanger by the position of the discharge side of the compressor, wherein conditioner tool
It is standby:
Fan, the fan are blown to the outdoor heat exchanger；
Power supply device, the power supply device are supplied electric power to the fan；
Fan input detection unit, the fan input detection unit pair physics associated with the electric power for being supplied to the fan
Amount is detected；And
Control unit, described control unit control the switch unit, so as to make the outdoor heat exchanger as evaporator
The 1st operating functioned and the 2nd operating for functioning the outdoor heat exchanger as condenser switch over,
On the basis of the physical quantity that the fan input detection unit detects more than amount, the 1st operating is cut
It is changed to the 2nd operating,
The temperature of the refrigerant for flowing through outdoor heat exchanger when described control unit is based on the described 1st operating and make described
The frequency variation of compressor when the 2nd operating, and the compressor is controlled in the state of being switched to the described 2nd operating,
So that the situation that the frequency of the compressor in the case that the temperature of the refrigerant is high is low greater than the temperature of the refrigerant
Under the compressor frequency.
3. conditioner according to claim 1 or 2, wherein
The fan input detection unit drives current value, voltage value or the base of the outside motor of the fan to being applied to
It is detected in the power value of the current value and the voltage value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/054402 WO2016132473A1 (en) | 2015-02-18 | 2015-02-18 | Air conditioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107250679A CN107250679A (en) | 2017-10-13 |
| CN107250679B true CN107250679B (en) | 2019-11-26 |
Family
ID=56689320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580075922.1A Active CN107250679B (en) | 2015-02-18 | 2015-02-18 | Conditioner |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170363332A1 (en) |
| EP (1) | EP3260790B1 (en) |
| JP (1) | JP6338762B2 (en) |
| CN (1) | CN107250679B (en) |
| WO (1) | WO2016132473A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110268203B (en) * | 2017-03-24 | 2021-11-30 | 东芝开利株式会社 | Air conditioner |
| US10914503B2 (en) * | 2018-02-01 | 2021-02-09 | Johnson Controls Technology Company | Coil heating systems for heat pump systems |
| CN114502895B (en) * | 2019-10-23 | 2023-04-14 | 日立江森自控空调有限公司 | Air conditioner, control method for air conditioner, and program |
| JP7278496B1 (en) * | 2022-05-18 | 2023-05-19 | 三菱電機株式会社 | Refrigeration cycle state prediction device, refrigeration cycle control device, and refrigeration cycle device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204029A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5930980B2 (en) * | 1981-01-27 | 1984-07-30 | 三菱電機株式会社 | Frost detection device |
| JPH01107056A (en) * | 1987-10-21 | 1989-04-24 | Toshiba Corp | Air conditioner |
| JP2831838B2 (en) * | 1990-11-06 | 1998-12-02 | 株式会社東芝 | Air conditioner |
| JP3034781B2 (en) * | 1995-06-07 | 2000-04-17 | シャープ株式会社 | refrigerator |
| CN1888671A (en) * | 2005-06-30 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Air conditioner defrosting operation controlling device and operating method thereof |
| JP2009058222A (en) * | 2006-03-31 | 2009-03-19 | Daikin Ind Ltd | Outdoor unit |
| JP2010032107A (en) * | 2008-07-29 | 2010-02-12 | Hitachi Appliances Inc | Air conditioner |
| JP2010091118A (en) * | 2008-10-03 | 2010-04-22 | Panasonic Corp | Air conditioner |
| JP2010210223A (en) * | 2009-03-12 | 2010-09-24 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| US20120060530A1 (en) * | 2009-05-29 | 2012-03-15 | Daikin Industries, Ltd. | Air conditioner |
| JP4836212B2 (en) * | 2009-07-22 | 2011-12-14 | シャープ株式会社 | Air conditioner |
| JP6071648B2 (en) * | 2013-03-01 | 2017-02-01 | 三菱電機株式会社 | Air conditioner |
-
2015
- 2015-02-18 WO PCT/JP2015/054402 patent/WO2016132473A1/en active Application Filing
- 2015-02-18 CN CN201580075922.1A patent/CN107250679B/en active Active
- 2015-02-18 EP EP15882576.0A patent/EP3260790B1/en active Active
- 2015-02-18 US US15/543,289 patent/US20170363332A1/en not_active Abandoned
- 2015-02-18 JP JP2017500189A patent/JP6338762B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204029A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107250679A (en) | 2017-10-13 |
| EP3260790A1 (en) | 2017-12-27 |
| EP3260790A4 (en) | 2018-10-24 |
| EP3260790B1 (en) | 2020-03-25 |
| WO2016132473A1 (en) | 2016-08-25 |
| JPWO2016132473A1 (en) | 2017-09-07 |
| US20170363332A1 (en) | 2017-12-21 |
| JP6338762B2 (en) | 2018-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11384971B2 (en) | Intelligent defrost control method | |
| CN105980784B (en) | Air conditioner | |
| CN107250679B (en) | Conditioner | |
| EP2719966B1 (en) | Refrigeration air-conditioning device | |
| US8567203B2 (en) | Air conditioner and defrosting operation method of the same | |
| US8640470B2 (en) | Control method of refrigerator | |
| US10151505B2 (en) | Air-conditioning apparatus | |
| CN107208917B (en) | Air conditioner | |
| EP3059515A1 (en) | Air conditioner | |
| US10281184B2 (en) | Air conditioner | |
| JP6032330B2 (en) | air conditioner | |
| CN107575998A (en) | The defrosting control method of air-conditioning and its outdoor unit | |
| CN107917505A (en) | Multi-split air conditioning system and outdoor unit defrosting control method thereof | |
| KR20100110423A (en) | Air conditioner and control method thereof | |
| KR101756090B1 (en) | Providing air conditioning heat pump hot air dryer and its operation control method | |
| JP4869117B2 (en) | Air conditioner | |
| EP3287715B1 (en) | Refrigeration cycle apparatus | |
| JP6022291B2 (en) | Air conditioner | |
| EP3508795B1 (en) | Air conditioning device | |
| CN105258270B (en) | It is a kind of to determine frequency fresh air system and its defrosting control method | |
| US11913694B2 (en) | Heat pump system | |
| US11585578B2 (en) | Refrigeration cycle apparatus | |
| US20220282896A1 (en) | Demand defrost with frost accumulation failsafe | |
| CN110207413A (en) | Refrigerating system with drying function, drying device and operation control method | |
| CN113983728A (en) | Defrosting method, device and equipment for evaporator and temperature adjusting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |