CN104236027B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN104236027B CN104236027B CN201410236215.3A CN201410236215A CN104236027B CN 104236027 B CN104236027 B CN 104236027B CN 201410236215 A CN201410236215 A CN 201410236215A CN 104236027 B CN104236027 B CN 104236027B
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- Prior art keywords
- temperature
- air
- indoor
- threshold value
- indoor fan
- Prior art date
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000004781 supercooling Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located 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
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- 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
- F24F2110/20—Humidity
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The control device (30) of air conditioner (100) is when the difference i.e. difference in air temperature Δ T of air themperature Tin with design temperature Tset is more than hot threshold value T1, determine revolutions per minute Nf, indoor fan (7) is made to rotate with revolutions per minute Nf of this decision, fan threshold value T2 is exceeded at difference in air temperature Δ T, the when that heat exchanger temperature Te exceeding changes in temperature threshold value T3 and air humidity Hin less than dry and wet threshold value H1, described indoor fan is made to stop, and after making described indoor fan stop, in the case of the difference i.e. supercooling temperature Δ Tedp of heat exchanger temperature Te with dew point temperature Tdp is less than supercooling threshold value T4, or in the case of have passed through again rotational time stopping from described indoor fan, indoor fan (7) is made again to rotate.
Description
Technical field
The present invention relates to air conditioner, particularly possess the air conditioner of dehumidification function.
Background technology
As the existing air conditioner possessing dehumidification function, disclose the operating control of following air conditioner
Device processed, this air conditioner has: the compressor of volume-variable, heat source side heat exchanger are (quite
In outdoor heat converter), expansion mechanism, possess air quantity variable utilize crosswind fan (be equivalent to room
Internal fan) utilize side heat exchanger (being equivalent to indoor heat converter), control device and first exist
Room temperature controls in loop, controls compressor frequency so that indoor intake air temperature is close to setting temperature
Degree, at indoor intake air temperature close to after design temperature, switches to humidity control loop, makes
The frequency of compressor increases, and makes the revolutions per minute of indoor blower reduce (minimizing air quantity) simultaneously,
Reduce sensible capacity (reduction refrigeration load), it is ensured that latent heat ability, it is achieved prevent supercool (such as,
With reference to patent documentation 1.).
Prior art literature
Patent documentation
Patent documentation 1: No. 2909955 publications (5-6 page, Fig. 6) of Japanese Patent Publication No.
Summary of the invention
The problem that invention is to be solved
But, in the operation controller of the air conditioner of patent documentation 1 record, in indoor suction
Enter air themperature to reach switch to humidity control loop during design temperature and reduce indoor blower
Air quantity.Like this, because of the minimizing of air quantity, blow out air temperature reduces, therefore works as blow-off outlet
The humidity height of surrounding when, easily produce condensation at blow-off outlet, there is dew and fall
Problem in air-conditioning object space.
And, in the case of indoor intake air temperature is low, there is indoor heat converter
Temperature is too low and reaches the danger of less than 0 DEG C, there is the condensed water being attached to indoor heat converter
Freeze and make the danger of indoor heat converter breakage.
The present invention, precisely in order to solve above-mentioned problem and complete, its object is to provide one
Air conditioner, it is while suppression is supercool, it is achieved the condensation of blow-off outlet prevents from exchanging with Indoor Thermal
The freezing of device prevents.
For solving the scheme of problem
The air conditioner that the present invention relates to is characterised by having: off-premises station, is provided with compression refrigeration
Agent also can change the room carrying out heat exchange between the compressor of compressor frequency and outdoor air
Outer heat-exchanger and make the expansion valve that cold-producing medium expands；And indoor set, it is disposed in the interior,
And it is provided with between room air and carries out the indoor heat converter of heat exchange, towards Indoor Thermal friendship
The indoor fan of parallel operation supply room air, detection are from the indoor temperature sucking room air
Indoor inhaled air temperature sensor, detection is from the indoor humidity sucking room air
Indoor suction air humidity sensor, detect the heat exchanger of the temperature of described indoor heat converter
Temperature sensor and at least control the control device of described compressor and described indoor fan,
Air themperature Tin that described control device detects at described indoor inhaled air temperature sensor
Preset with the predetermined temperature i.e. difference of design temperature Tset i.e. difference in air temperature Δ T ratio
The hottest threshold value T1 of temperature big time, detect according to described indoor suction air humidity sensor
Air humidity Hin and the heat exchanger temperature Te that detects of described heat-exchanger temperature sensor
Relation determine revolutions per minute Nf, carry out making institute according to revolutions per minute Nf of this decision
State the cooling operation that indoor fan rotates；In described cooling operation, when described difference in air temperature
Δ T exceedes predetermined temperature i.e. fan threshold value T2 than described hot threshold value T1 low temperature, institute
State the temperature i.e. heat exchanger temperature Te that heat-exchanger temperature sensor detects to exceed and set in advance
Fixed temperature i.e. changes in temperature threshold value T3, and described air humidity Hin is less than humidity set in advance i.e.
During dry and wet threshold value H1, described indoor fan is made to stop；And stop making described indoor fan
After, using the difference of heat exchanger temperature Te and dew point temperature Tdp sucking room air as mistake
Chilling temperature Δ Tedp, the most supercool less than predetermined temperature at this supercooling temperature Δ Tedp
But in the case of threshold value T4, or preset have passed through from the stopping of described indoor fan
Time rotational time the most again in the case of, make described indoor fan again rotate.
Invention effect
According to the present invention, control device according to air humidity Hin with heat exchanger temperature Te's
Relation determines revolutions per minute Nf, makes described indoor fan with revolutions per minute Nf of this decision
Rotate and carry out cooling operation, exceed fan threshold value T2, heat exchanger at difference in air temperature Δ T
The when that temperature Te exceeding changes in temperature threshold value T3 and air humidity Hin less than dry and wet threshold value H1,
Indoor fan is made to stop, and after making described indoor fan stop, at supercooling temperature Δ Tedp
In the case of supercooling threshold value T4, or have passed through stopping from described indoor fan
Again in the case of rotational time, indoor fan is made again to rotate.
Therefore, it is possible to suppression supercooling, and the condensation being capable of the periphery of blow-off outlet prevents
With indoor heat converter freeze prevent.
Accompanying drawing explanation
Fig. 1 illustrates the air conditioner that embodiments of the present invention 1 relate to, and is to schematically show system
The refrigerant loop figure of the structure of refrigerant circuit.
Fig. 2 is a part (indoor set) for the air conditioner illustrating that embodiments of the present invention 1 relate to
Side view cutaway drawing.
Fig. 3 illustrates the air conditioner that embodiments of the present invention 1 relate to, and is to illustrate a part (control
Device processed) the block diagram of structure.
Fig. 4 is to illustrate the control flow of air conditioner that explanation embodiments of the present invention 1 relate to
Flow chart.
Fig. 5 is to illustrate the control flow of air conditioner that explanation embodiments of the present invention 1 relate to
Flow chart.
Fig. 6 illustrates the air conditioner that embodiments of the present invention 1 relate to, and is to illustrate according to Air Temperature
The form of the value of the compressor frequency that degree difference determines.
Fig. 7 illustrates the air conditioner that embodiments of the present invention 1 relate to, be illustrate according to air wet
The form of the value (index) of the revolutions per minute of the indoor fan that degree and heat exchanger temperature determine.
Fig. 8 illustrates the air conditioner that embodiments of the present invention 1 relate to, and is to illustrate according to the wettest
The form of the dew point temperature that degree and suction dry-bulb temperature determine.
Fig. 9 is to illustrate a part (room of air conditioner that explanation embodiments of the present invention 2 relate to
Interior machine) side view cutaway drawing.
Detailed description of the invention
[embodiment 1]
Fig. 1～Fig. 3 illustrates the air conditioner that embodiments of the present invention 1 relate to, and Fig. 1 is signal
Illustrating to property the refrigerant loop figure of the structure of refrigerant loop, Fig. 2 is to illustrate a part (room
Interior machine) side view cutaway drawing, Fig. 3 is the block diagram of the structure illustrating a part (control device).
It addition, each figure is schematic, the present invention is not limited to the form of diagram.
(refrigerant loop)
In FIG, air conditioner 100 has the off-premises station 10 connected each other by refrigerant piping
With indoor set 20.
Being provided with at off-premises station 10: compressor 1, it compresses cold-producing medium and can change operating frequency
Rate (hereinafter referred to as " compressor frequency ")；Cross valve 2, it is for changing the flowing of cold-producing medium
Direction；Outdoor heat converter 3, carries out heat exchange between itself and outdoor air；Outdoor fan 4,
It is towards outdoor heat converter 3 supply chamber outer air；And expansion valve 5, it makes cold-producing medium swollen
Swollen.On the other hand, be provided with at indoor set 20: indoor heat converter 6, its with room air it
Between carry out heat exchanger；And indoor fan 7, it is towards in indoor heat converter 6 supply chamber
Air.
Further, in the case of to indoor refrigeration, form the cold-producing medium discharged from compressor 1 and depend on
Secondary flow through cross valve 2, outdoor heat converter 3, expansion valve 5, indoor heat converter 6 again
The secondary refrigerant loop returning to compressor 1 through cross valve 2, performs kind of refrigeration cycle.
On the other hand, in the case of to indoor heating, form the refrigeration discharged from compressor 1
Agent flow successively through cross valve 2, indoor heat converter 6, expansion valve 5, outdoor heat converter 3,
And again pass by cross valve 2 and return to the refrigerant loop of compressor 1, perform kind of refrigeration cycle.
(indoor set)
In fig. 2, indoor set 20 is disposed upon being formed at the arrangement use of the roof 91 of indoor 90
" roof baried type " in recess 92, it possesses the framework 21 of rectangle of lower surface 22 opening,
Central authorities at the end face 23 of framework 21 are provided with indoor fan motor 7a, in indoor fan motor
7a is fixed with indoor fan blade 7b, indoor fan motor 7a and indoor fan blade 7b structure
Become indoor fan 7.
Further, indoor heat converter 6 is configured to embracing chamber internal fan blade 7b.Now, room
Inside heat exchanger 6 is divided into 4 parts, described part each with the side 24 (4 of framework 21
Face) configure abreast, and between side 24, form wind path 25 (at 4).
Therefore, by indoor fan 7, make the room air aspirated from the lower surface 22 of opening exist
After indoor heat converter 6, via wind path 25, from the side 24 of the lower surface 22 of opening
Environs to indoor 90 blowouts.
It addition, be detachably provided with the decoration panel of rectangular plate-like at the lower surface 22 of opening
26, along the lateral margin of decoration panel 26, form blow-off outlet 29 in the position corresponding with wind path 25,
And form suction inlet 27 with the form surrounded by blow-off outlet 29 in central range.And,
Be configured with indoor air efficient between suction inlet 27 and indoor fan blade 7b to indoor wind
The cover 28 of horn-like (leading a cow flower-shaped) that fan leaf 7b guides.
(sensor)
Further, it is provided with indoor inhaled air temperature sensor at cover 28 (hereinafter referred to as " empty
Temperature sensor ") 31, the temperature of the room air that its detection sucks；And indoor suction is empty
Gas humidity sensor (hereinafter referred to as " air humidity sensor ") 32, the indoor that its detection sucks
The humidity of air.The room of the temperature of sensing chamber's inside heat exchanger 6 it is provided with at indoor heat converter 6
Inside heat exchanger temperature sensor (hereinafter referred to as " heat-exchanger temperature sensor ") 33.
Further, based on air temperature sensor 31, air humidity sensor 32 and heat exchanger
The testing result of temperature sensor 33 carrys out revolutions per minute and the compressor 1 of control room internal fan 7
The control device 30 of speed be disposed in the interior in machine 20.
As long as it addition, the setting energy of air temperature sensor 31 and air humidity sensor 32
The position of the temperature and humidity of the room air that enough detections suck, can be arranged on arbitrary position.
And, control device 30 and can also be disposed in the outdoor machine 10.
(control device)
Control device 30 based on air temperature sensor 31, air humidity sensor 32 and
The testing result of heat-exchanger temperature sensor 33 carrys out the revolutions per minute of control room internal fan 7
The compressor frequency Hz of Nf and compressor 1, it has for performing shown in following control flow
Each step component (the computing component of difference in air temperature Δ T, difference in air temperature Δ T with heat
The comparison means of threshold value T1, the decision component of compressor frequency Hz, make compressor 1 rotate or
Instruction component, the decision component of revolutions per minute Nf of indoor fan 7, the Air Temperature that person stops
Degree difference Δ T and the comparison means of fan threshold value T2, air humidity Hin and dry and wet threshold value H1
Comparison means, the computing component of supercooling temperature Δ Tedp, supercooling temperature Δ Tedp are with supercool
But the comparison of dwell time and the rotational time again of the comparison means of threshold value T4, indoor fan 7
Component, difference in air temperature Δ T and the comparison means being dried hot threshold value T5).
(control flow)
Fig. 4 and Fig. 5 is to illustrate the control of air conditioner that explanation embodiments of the present invention 1 relate to
The flow chart of flow process.
Use Fig. 4 and Fig. 5, air conditioner 100 is carried out cooling operation (to indoor heat converter 6
Supply cold energy comes in cooling chamber 90) time control flow (action) illustrate.
When air conditioner 100 being connected (ON) power supply (S1), starting air themperature respectively and passing
Sensor 31 to the detection of indoor intake air temperature (hereinafter referred to as " air themperature ") Tin,
Air humidity sensor 32 is to indoor suction relative humidity (hereinafter referred to as " air humidity ") Hin
Detection and heat-exchanger temperature sensor 33 (following to the temperature of indoor heat converter 6
Detection (S2) referred to as " heat exchanger temperature Te ").
(heat stops (Thermo-OFF))
Then, the temperature (hereinafter referred to as " design temperature ") of air themperature Tin and setting is tried to achieve
Difference in air temperature Δ T (S3) of Tset, compares difference in air temperature Δ T and hot threshold set in advance
The size (S4) of value T1 (such as, 1.5 DEG C).
Then, when difference in air temperature Δ T is below hot threshold value T1, i.e. in air themperature
Tin arrive design temperature Tset and without regulating the blowout of air in the case of, keep compressor
1 stops (OFF) (S5), stops as long as not pressed instruction operating by not shown remote controller etc.
Stop button (S6), then return to detect air themperature Tin, air humidity Hin and heat exchange
The step (S2) of device temperature Te, and perform step thereafter.On the other hand, at stop button
When being pressed, stop the operating (end) of air conditioner 100.It addition, compressor 1 will be made to stop
(OFF) situation is referred to as " heat is stopped ".
(heat opens (Thermo-ON))
On the other hand, when difference in air temperature Δ T exceedes hot threshold value T1, i.e. in air themperature
In the case of Tin does not arrives design temperature Tset, determine according to the size of difference in air temperature Δ T
Drive the frequency (hereinafter referred to as " compressor frequency Hz ") (S7) of the electric power of compressor 1, with
The compressor frequency Hz of this decision makes compressor 1 rotate (ON) (S8).It addition, pressure will be made
Contracting machine 1 starts the situation of (ON) and is referred to as " heat is opened ".
That is, in the case of making compressor 1 start (ON), implement to control compressor frequency
The VFC of Hz, in the case of difference in air temperature Δ T is big, increases compressor frequency Hz
Improve air conditioning capacity, on the contrary, in the case of difference in air temperature Δ T is little, reduce compression
Unit frequency Hz reduces air conditioning capacity (with reference to Fig. 6).
(humidity judges: the situation of high humility)
It is determined that whether air humidity Hin exceedes high humility (such as, 78%) (S9).
Then, in the case of being judged to be high humility, by the revolutions per minute of indoor fan 7
Nf is determined as according to air humidity Hin and the relation of heat exchanger temperature Te predetermined
Revolutions per minute Nf (with reference to Fig. 7) (S10), makes indoor with revolutions per minute Nf of this decision
Fan motor 7a rotates (S11).Then, as long as not pressed instruction by not shown remote controller etc.
The stop button (S12) that operating stops, then return to detect air themperature Tin, air humidity Hin
With the step (S2) of heat exchanger temperature Te, and perform step thereafter.On the other hand, exist
When stop button is pressed, stop the operating (end) of air conditioner 100.
(humidity judges: the situation of low humidity)
On the other hand, in the case of being judged to be low humidity, per minute by indoor fan 7
Revolution Nf is determined as according to air humidity Hin and the relation of heat exchanger temperature Te the most true
Fixed revolutions per minute Nf (with reference to Fig. 7) (S13), makes with revolutions per minute Nf of this decision
Indoor fan motor 7a rotates (S14).
It is then detected that air themperature Tin, air humidity Hin and heat exchanger temperature Te (S15),
Try to achieve difference in air temperature Δ T (Δ T=Tin-Tset) (S16).
(stopping of indoor fan)
It follows that exceed fan threshold value T2 set in advance (such as, at difference in air temperature Δ T
1.0 DEG C) (Δ T > 1.0 DEG C), heat exchanger temperature Te exceed changes in temperature threshold value T3 (example set in advance
As, 1.0 DEG C) and warmer (such as, Te > 8 DEG C) and air humidity Hin are less than pre-
Dry and wet threshold value H1 (such as, 68%) that first sets and relatively dry (such as, Hin < 68%)
In the case of (S17), make indoor fan 7 stop (S18).
On the other hand, it is being unsatisfactory for above-mentioned condition (" Δ T>T2 " and " Te>T3 " and " Hin<H1 ")
In the case of, continue the rotation of indoor fan 7, return to detect air themperature Tin, air wet
The step (S13) of degree Hin and heat exchanger temperature Te, performs step thereafter.
(rotating again of indoor fan)
Further, after making indoor fan 7 stop (S18), air themperature Tin, air are detected
Humidity (Hin) and heat exchanger temperature Te (S19), the dew point of the room air that computing sucks
Difference (hereinafter referred to as " the supercooling of temperature Tdp and heat exchanger temperature Te and dew point temperature Tdp
Temperature ") Δ Tedp (Δ Tedp=Te-Tdp) (S20).It addition, dew point temperature Tdp is permissible
Calculated by the approximate expression obtained by air line chart, it is also possible to be, such as according to shown in Fig. 8
Form is (relative to air themperature (dry-bulb temperature) Tin and air humidity (relative humidity) Hin
Arrange) judge.
Then, in supercooling temperature Tedp less than supercooling threshold value T4 set in advance (such as,
-3.0 DEG C) or have passed through from the stopping of indoor fan 7 (S18) and set in advance revolve again
Turn in the case of the time (such as, 30 seconds) (S21), for preventing indoor heat converter 6
The purpose freezed, makes indoor fan 7 rotate (S22) once again.
Then, detection air themperature Tin (S23), try to achieve difference in air temperature Δ T (S24), than
It is dried the big of hot threshold value T5 (such as ,-0.5 DEG C) with set in advance compared with difference in air temperature Δ T
Little (S25).
Then, at difference in air temperature Δ T when being dried below hot threshold value T5, i.e. at Air Temperature
In the case of degree Tin is than design temperature Tset low temperature, compressor 1 is made to stop (OFF) (S26).
Then, as long as not pressing stop button, then return to detect air themperature Tin, air humidity Hin
With the step (S2) of heat exchanger temperature Te, and perform step thereafter.
On the other hand, when difference in air temperature Δ T exceedes dry hot threshold value T5, i.e. work as air
When temperature Tin reaches design temperature Tset or slightly less than design temperature Tset, return to room
Revolutions per minute Nf of internal fan 7 is determined as according to air humidity Hin and heat exchanger temperature
The relation of Te and the step (S13) of revolutions per minute Nf (with reference to Fig. 6) that predetermines, hold
Row step thereafter.
(compressor frequency)
Fig. 6～Fig. 8 illustrates the air conditioner that embodiments of the present invention 1 relate to, and Fig. 6 is to illustrate
The form of the value of the compressor frequency according to difference in air temperature decision, Fig. 7 is to illustrate according to air
The value (index) of revolutions per minute Nf of the indoor fan that humidity and heat exchanger temperature determine
Form, Fig. 8 is to illustrate the table according to relative humidity and the dew point temperature sucking dry-bulb temperature decision
Lattice.
In figure 6, Δ T is the biggest for difference in air temperature, then revolutions per minute Nf is the biggest, promotes room
The refrigeration of interior air.Further, reach to be dried hot threshold value T5 (such as, as difference in air temperature Δ T
-0.5 DEG C) time, make compressor 1 stop.
(revolutions per minute)
In the figure 7, it is that lowest temperature, air humidity Hin are for the highest by heat exchanger temperature Te
Revolutions per minute Nf in the case of humidity, indoor fan 7 is set to " 100 ", by heat exchange
Device temperature Te is divided into 4 grades, and air humidity Hin is divided into 5 grades, by each
Revolutions per minute Nf of the indoor fan 7 under Hua Fening is with the index table relative to described " 100 "
Show.
Namely it is decided that be the situation (78% < Hin) of high humility, with the situation being judged to low humidity
(Hin≤78%) is compared, and revolutions per minute Nf of indoor fan 7 increases, air humidity Hin
The highest, then indoor fan 7 general stages ground speedup.And, in same air humidity Hin
Under, heat exchanger temperature Te is the lowest, then revolutions per minute Nf of indoor fan 7 is the biggest.
Here, dry and wet threshold value H1 of air humidity Hin is grasped by test as not condensing
Humidity makes form (Fig. 6) with the relation of air quantity.And, the threshold of heat exchanger temperature Te
It is worth with following direction setting, will have " 4 DEG C " work of surplus in lower limit side relative to " 0 DEG C "
For lower limit to prevent indoor heat converter 6 from freezing, and in order to ensure as far as possible that latent heat ability
And make the temperature of indoor heat converter 6 reduce.
(dew point temperature)
The dew point temperature that Fig. 8 replaces formula and will determine according to relative velocity and suction dry-bulb temperature
Value illustrate with form, relative humidity (relative to air humidity Hin) the highest (high humidity), inhale
Enter dry-bulb temperature (being equivalent to air themperature Tin) the highest (high temperature), then dew point temperature (Tdp)
Value the highest.
(action effect)
Air conditioner 100 is meeting " T>1.0 DEG C " and " Te>8 DEG C " and " Hin<68% "
In the case of make indoor fan 7 stop (S18).This means at low humidity and there is not Indoor Thermal
The worry freezed of exchanger 6, difference in air temperature Δ T (air themperature Tin and design temperature
The difference of Tset) little in the case of, dehumidify to reduce sensible capacity further, continue pressure
The operating of contracting machine 1, makes indoor fan 7 stop simultaneously, so that heat exchanger temperature Te enters one
Step declines.That is, when indoor fan 7 stops, at indoor heat converter 6, with suction air
Between there is no heat exchange, therefore cannot dehumidify, but due to indoor fan 7 operate intermittent fever hand over
Parallel operation temperature Te have dropped, even the least air quantity can also ensure that latent heat ability.
Further, if making the indoor fan 7 temporarily ceased again rotate (S22), it is ensured that heat
Exchanger temperature Te less than dew point temperature Tdp (more low temperature), even thus room conditioning is negative
Load hour can also ensure that latent heat ability, and by also setting time conditions, even if in contingency
In the case of heat-exchanger temperature sensor 33 fault, it is also possible to prevent indoor heat converter 6
Freeze.
As it has been described above, air conditioner 100 detects air themperature Tin, air humidity Hin and Re Jiao
Parallel operation temperature Te, controls compressor frequency and the revolutions per minute of indoor fan 7 based on this,
Therefore, even can also ensure that latent heat ability in indoor load hour, and dew point temperature is tried to achieve
Degree Tdp, makes indoor fan 7 by comparing dew point temperature Tdp with heat exchanger temperature Te
Rotate again, therefore, it is possible to realize condensation prevent with heat exchanger freeze prevent.
[embodiment 2]
Fig. 9 is to illustrate a part (room of air conditioner that explanation embodiments of the present invention 2 relate to
Interior machine) side view cutaway drawing.It addition, to the part identical with embodiment 1 or suitable portion
Minute mark is with identical label, clipped explanation.And, Fig. 9 is schematic, this
The bright form being not limited to diagram.
In fig .9, the indoor set 220 of air conditioner 200, the indoor set in embodiment 1
The decoration panel 26 of 20 possesses the ground of the temperature of the ground surface (not shown) of 90 in sensing chamber
Temperature sensor 34.
(surface temperature sensor)
Surface temperature sensor 34 is the infrared ray that detection sends from ground surface, detects non-contactly
The thermocouple type sensor of the temperature (hereinafter referred to as " surface temperature Tf ") of ground surface, but
The present invention is not limited to this form and shape etc..
(sendible temperature)
It addition, the sendible temperature that human feeling is arrived, in addition to the air themperature of surrounding,
The considerable influence of the radiation temperature also obtained by humidity, ground surface or even the metope of air.Cause
This, for air conditioner 200, relative to the control device 30 of air conditioner (embodiment 1) 100
Situation about controlling based on air themperature Tin etc., the control dress of air conditioner (embodiment 2) 200
Put 30 replacement air themperatures Tin and use sendible temperature Ta.
That is, sendible temperature Ta passes through air themperature Tin, air humidity Hin, surface temperature
The function of Tf i.e. formula " Ta=Tin+ α × (Hin-60)+β × (Tf-Tin) " is tried to achieve.
Now, the correction factor (dimension is [DEG C/%]) when α is to consider air humidity Hin, β
For considering air themperature Tin and correction factor during surface temperature Tf, according to test substitute into for
The value (0 < α < 1.0,0 < β < 1.0) of the 0 to 1 of comfort index consideration.
Such as, if α be 0.003 [DEG C/%], β is 0.25, uses concrete numbers illustrated effect.
When Tin=26 DEG C, Hin=50%, Tf=25 DEG C time, Ta=25.45 DEG C.This is to add to repair
Just make to experience with the situation that, radiation temperature low in air humidity Hin (surface temperature Tf) are low
The result that sendible temperature Ta is lower than air themperature Tin of surrounding.I.e., in this case, pass through
Using sendible temperature Ta, difference in air temperature Δ T is than little ((Ta in the case of use air themperature Tin
-Tset) < (Tin-Tset)).
Therefore, by such corrected sendible temperature Ta being replaced the sky in air conditioner 100
Temperature Tin uses, as it has been described above, the compressor frequency Hz of compressor 1 is in relatively low temperature
Degree is controlled, it is possible to shortens the duration of runs of compressor 1, and can reduce compressor frequency,
Therefore, it is possible to carry out energy-saving operation.
On the contrary, set α, [DEG C/%], β are 0.25 as 0.003, as Tin=26 DEG C, Hin
=70%, Tf=27 DEG C time, sendible temperature Ta is 26.55 DEG C.I.e., in this case, logical
Crossing use sendible temperature Ta, difference in air temperature Δ T is bigger than in the case of using air themperature Tin
((Ta-Tset) > (Tin-Tset)).
Accordingly, because air humidity Hin is high, surface temperature Tf is the highest, so relative to reality
Air themperature Tin on border is more felt bad, and is therefore modified to sendible temperature Ta compare air themperature
Tin is high.By controlling based on this sendible temperature Ta, it is possible to carry out more comfortable operating.
(control device)
Control device 30 and the control device 30 (reference at air conditioner 100 of air conditioner 200
Fig. 3) upper connect surface temperature sensor 34 and possess sendible temperature Ta computing component,
Air themperature Tin is identical to the structure of the displacement members of sendible temperature Ta, therefore omits diagram.
Label declaration
1: compressor；2: cross valve；3: outdoor heat converter；4: outdoor fan；5: swollen
Swollen valve；6: indoor heat converter；7: indoor fan；7a: indoor fan motor；7b: room
Internal fan blade；10: off-premises station；20: indoor set；21: framework；22: lower surface；23:
End face；24: side；25: wind path；26: decoration panel；27: suction inlet；28: cover；
29: blow-off outlet；30: control device；31: air temperature sensor；32: air humidity passes
Sensor；33: heat-exchanger temperature sensor；34: surface temperature sensor；90: indoor；
91: roof；92: arrangement recess；100: air conditioner (embodiment 1)；200: air-conditioning
Machine (embodiment 2)；220: indoor set (embodiment 2).
Claims (2)
1. an air conditioner, it is characterised in that
Have:
Off-premises station, is provided with compression cold-producing medium and can change compressor and the room of compressor frequency
The outdoor heat converter carrying out heat exchange between outer air and the expansion valve making cold-producing medium expand；
And
Indoor set, is disposed in the interior, and is provided with between room air the room carrying out heat exchange
Inside heat exchanger, towards indoor heat converter supply room air indoor fan, detection from
The indoor inhaled air temperature sensor of the indoor temperature sucking room air, detection are from room
In suck room air humidity indoor suction air humidity sensor, detect described indoor
The heat-exchanger temperature sensor of the temperature of heat exchanger and at least control described compressor and
The control device of described indoor fan,
The air themperature that described control device detects at described indoor inhaled air temperature sensor
The difference i.e. difference in air temperature Δ T ratio of Tin and the design temperature Tset as predetermined temperature
When the hottest threshold value T1 of predetermined temperature is big, come according to the size of described difference in air temperature Δ T
Determine described compressor frequency, hereafter, according to described indoor suction air humidity sensor detection
The heat exchanger temperature that air humidity Hin gone out and described heat-exchanger temperature sensor detect
The relation of Te determines revolutions per minute Nf, carries out making according to revolutions per minute Nf of this decision
The cooling operation that described indoor fan rotates；
In described cooling operation, when described difference in air temperature Δ T exceedes than described hot threshold value T1
The predetermined temperature of low temperature i.e. fan threshold value T2, described heat-exchanger temperature sensor detects
The temperature gone out i.e. heat exchanger temperature Te exceedes predetermined temperature i.e. changes in temperature threshold value T3, and
When described air humidity Hin is less than humidity set in advance i.e. dry and wet threshold value H1, make described room
Internal fan stops；
And after making described indoor fan stop, by heat exchanger temperature Te and suction Interior Space
The difference of dew point temperature Tdp of gas is as supercooling temperature Δ Tedp, in this supercooling temperature
In the case of Δ Tedp is less than predetermined temperature i.e. supercooling threshold value T4, or from institute
State in the case of indoor fan stopped have passed through time set in advance rotational time the most again, make
Described indoor fan rotates again.
Air conditioner the most according to claim 1, it is characterised in that
Described indoor set has the surface temperature sensing of the temperature of the ground surface detecting described indoor
Device；
The temperature i.e. surface temperature that described control device detects based on described surface temperature sensor
Tf, described air themperature Tin and described air humidity Hin, according to Ta=Tin+ α × (Hin
-60)+β × (Tf-Tin), tries to achieve sendible temperature Ta, replace described air themperature Tin and
Controlling described compressor and described indoor fan based on described sendible temperature Ta, wherein, α is
Correction factor, its dimension when considering air humidity Hin be DEG C/%, β be consideration air themperature
Correction factor when Tin and surface temperature Tf.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-124407 | 2013-06-13 | ||
| JP2013124407A JP5975937B2 (en) | 2013-06-13 | 2013-06-13 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104236027A CN104236027A (en) | 2014-12-24 |
| CN104236027B true CN104236027B (en) | 2017-01-04 |
Family
ID=50844815
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420286678.6U Expired - Fee Related CN203940582U (en) | 2013-06-13 | 2014-05-30 | Air conditioner |
| CN201410236215.3A Expired - Fee Related CN104236027B (en) | 2013-06-13 | 2014-05-30 | Air conditioner |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420286678.6U Expired - Fee Related CN203940582U (en) | 2013-06-13 | 2014-05-30 | Air conditioner |
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| Country | Link |
|---|---|
| JP (1) | JP5975937B2 (en) |
| CN (2) | CN203940582U (en) |
| GB (1) | GB2516336B (en) |
| MX (1) | MX342141B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN104764115B (en) * | 2015-03-31 | 2018-03-20 | 广东美的暖通设备有限公司 | Multiple on-line system |
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| CN112650315B (en) * | 2020-09-09 | 2021-11-05 | 江苏振宁半导体研究院有限公司 | Temperature control method of temperature controller |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104236027A (en) | 2014-12-24 |
| GB201406482D0 (en) | 2014-05-28 |
| MX342141B (en) | 2016-09-14 |
| CN203940582U (en) | 2014-11-12 |
| GB2516336B (en) | 2016-03-09 |
| MX2014007073A (en) | 2014-12-12 |
| GB2516336A (en) | 2015-01-21 |
| JP5975937B2 (en) | 2016-08-23 |
| JP2015001310A (en) | 2015-01-05 |
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