CN106839324A - A kind of air-conditioner and its constant temperature dehumidification control method - Google Patents
A kind of air-conditioner and its constant temperature dehumidification control method Download PDFInfo
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- CN106839324A CN106839324A CN201710112653.2A CN201710112653A CN106839324A CN 106839324 A CN106839324 A CN 106839324A CN 201710112653 A CN201710112653 A CN 201710112653A CN 106839324 A CN106839324 A CN 106839324A
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 3
- 238000005314 correlation function Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 230000003190 augmentative effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010792 warming Methods 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
- 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
- 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
- F24F11/62—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
-
- 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
-
- 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
-
- 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
- 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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of air-conditioner and its constant temperature dehumidification control method, is related to air-conditioner dehumidifying technology field.Invented for the air conditioner structure for solving the problems, such as can to realize in the prior art constant temperature dehumidification is complicated, cost of manufacture is high.Air-conditioner of the invention is included by compressor, indoor heat exchanger, outdoor heat exchanger, four-way valve, the refrigerating and heating systems of indoor fan and outdoor fan composition, also include indoor temperature transmitter, indoor humidity sensor, inner disc temperature sensor and control unit, the inner disc temperature sensor is used to detect the coil temperature of the indoor heat exchanger, described control unit and the indoor temperature transmitter, the indoor humidity sensor, the inner disc temperature sensor, the four-way valve and the compressor are electrically connected, described control unit can control the commutation states of the four-way valve and the running frequency of the compressor.Air-conditioner of the present invention can be used to realize the constant temperature dehumidification of room air.
Description
Technical field
The present invention relates to air-conditioner dehumidifying technology field, more particularly to a kind of air-conditioner and its constant temperature dehumidification control method.
Background technology
Generally, it is inevitable while air-conditioner dehumidifies running also to be freezed.Therefore, temperature indoors
When higher, air-conditioner dehumidifying operation can be realized lowering the temperature and dehumidified simultaneously, and when temperature is relatively low indoors, if again removing air-conditioner
Wet operation, will cause the further reduction of indoor temperature, so that user feels cold.In order to avoid above mentioned problem, it is badly in need of
A kind of air-conditioner system and control method that can realize constant temperature dehumidification.
At present, a kind of air-conditioner system that can realize constant temperature dehumidification of the prior art is by common air-conditioning device
Dehumidification valve is concatenated in indoor heat exchange coil, during constant temperature dehumidification, dehumidification valve is closed, and plays throttling action, indoor heat exchange
An evaporator when part for device is as dehumidifying, another part directly connects to flow through the refrigeration of HTHP with outdoor heat exchanger
Agent, a part is heated in air channel indoors thus to flow through the air-flow of indoor heat exchanger, and another part is cooled, after mixing from
Indoor air outlet blows out, so as to realize constant temperature dehumidification.
But, the above-mentioned air-conditioner system that can realize constant temperature dehumidification needs to set up a dehumidifying on heat exchanger indoors
Flow path designs in valve, and indoor heat exchanger are more complicated, and cost of manufacture is higher, and removed due to having been concatenated in indoor heat exchange coil
Wet valve, result in the generation of harmful crushing, so that the overall performance reduction of air-conditioner, therefore, it is difficult to widely be promoted
And application.
The content of the invention
The present invention provides a kind of air-conditioner and its constant temperature dehumidification control method, can reduce air-conditioner design complexities and
Cost, it is ensured that the overall performance of air-conditioner.
To reach above-mentioned purpose, the invention provides a kind of air-conditioner, including changed by compressor, indoor heat exchanger, outdoor
The refrigerating and heating systems of hot device, four-way valve, indoor fan and outdoor fan composition are also wet including indoor temperature transmitter, interior
Degree sensor, inner disc temperature sensor and control unit, the inner disc temperature sensor are used to detect the indoor heat exchanger
Coil temperature, described control unit and the indoor temperature transmitter, the indoor humidity sensor, the inner disc TEMP
Device, the four-way valve and the compressor are electrically connected, described control unit can control the four-way valve commutation states and
The running frequency of the compressor.
Present invention also offers a kind of constant temperature dehumidification control method of air-conditioner, comprise the following steps：
S1, the constant-temperature dehumidifying function for opening air-conditioner；
S2, indoor temperature transmitter detection indoor temperature Tin, control unit is according to TinWith user design temperature Ts, calculate
Temperature difference △ T=Tin- Ts；
S3, described control unit control the air-conditioner refrigeration or heating operation, by institute according to the temperature difference △ T
Temperature difference △ T are stated to adjust to fiducial temperature；
The indoor relative humidity R of S4, the detection of indoor humidity sensorh；
S5, work as RhDuring more than or equal to the first default humidity, described control unit controls the air-conditioner dehumidifying operation, and
The coil temperature T of the indoor heat exchanger according to detected by inner disc temperature sensorP, the dehumidifying running frequency of compressor is adjusted,
So that TP＜ T1- the first default unit value, after the Preset Time of continuous service first, is transferred to the step S2.
A kind of air-conditioner and its constant temperature dehumidification control method that the present invention is provided, are opening the constant-temperature dehumidifying function of air-conditioner
Afterwards, detected value T of the control unit first according to indoor temperature transmitterinWith user design temperature Ts, temperature difference △ T are calculated,
Secondly control unit is according to this temperature difference △ T, control air-conditioner refrigeration or heating operation, and temperature difference △ T are adjusted to default
In temperature range, indoor relative humidity R is then detected by indoor humidity sensorh, work as RhIt is default more than or equal to first wet
When spending, control unit control air-conditioner dehumidifying operation, and the indoor heat exchanger according to detected by inner disc temperature sensor disk
Pipe temperature TP, the dehumidifying running frequency of compressor is adjusted, so that TP＜ T1- the first default unit value, so as to will be indoor relatively wet
Degree is reduced to below the first default humidity, after the Preset Time of continuous service first, the step of be transferred to above-mentioned calculating temperature difference.Thus
Long-play, you can by temperature difference △ T stabilizations in the range of fiducial temperature, while indoor relative humidity is controlled first
Below default humidity, it is achieved thereby that constant temperature dehumidification.Compared with prior art, the air-conditioner of the embodiment of the present invention is only by room
It is interior that temperature sensor and humidity sensor are set, inner disc temperature sensor is set on the coil pipe of heat exchanger indoors, you can realize
The constant temperature dehumidification of air-conditioner, without concatenating dehumidification valve in the coil pipe of heat exchanger indoors, without the stream for changing refrigerant, therefore
The design complexities and cost of air-conditioner are relatively low, while ensure that the overall performance of air-conditioner.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment of the present invention air-conditioner；
Fig. 2 is the first flow chart of the constant temperature dehumidification control method of embodiment of the present invention air-conditioner；
Fig. 3 is second flow chart of the constant temperature dehumidification control method of embodiment of the present invention air-conditioner；
Fig. 4 is first frequency, second frequency and the 3rd frequency in the constant temperature dehumidification control method of embodiment of the present invention air-conditioner
Correlation graph between rate and outdoor temperature.
Reference：
1-compressor；2-outdoor heat exchanger；3-indoor heat exchanger；4-four-way valve；5-indoor temperature transmitter；6—
Indoor humidity sensor；7-inner disc temperature sensor；8-control unit.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " on ", D score, "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " are based on shown in the drawings
Orientation or position relationship, are for only for ease of the description present invention and simplify and describe, rather than indicate or imply signified device or
Element with specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
In description of the invention, unless otherwise indicated, " multiple " is meant that two or more.
The dehumidification principle of air-conditioner is：When air-conditioner freezes, the temperature of indoor heat exchanger coil surface is relatively low, flows through interior
Vapor in the room air of heat exchanger liquefies to the cold, so as to form condensed water be expelled in outdoor environment.And air-conditioner system
When cold, when only the coil temperature of heat exchanger is less than dew-point temperature indoors, the vapor for flowing through indoor heat exchanger could liquefy
Into condensed water, now can just be dehumidified.And room air, under the conditions of same indoor temperature, different relative humidity is corresponding
Dew-point temperature is different.Relative humidity is higher, and corresponding dew-point temperature is higher.
Reference picture 1, Fig. 1 is a specific embodiment of embodiment of the present invention air-conditioner, and the air-conditioner of the present embodiment includes
By compressor 1, outdoor heat exchanger 2, indoor heat exchanger 3, four-way valve 4, indoor fan (not shown) and outdoor fan (in figure
It is not shown) composition refrigerating and heating systems, also including indoor temperature transmitter 5, indoor humidity sensor 6, inner disc TEMP
Device 7 and control unit 8, the inner disc temperature sensor 7 are used to detect the coil temperature of the indoor heat exchanger 3, the control
Unit 8 and the indoor temperature transmitter 5, the indoor humidity sensor 6, the inner disc temperature sensor 7, the four-way valve
4 and the compressor 1 electrically connect, described control unit 8 can control the commutation states and the compressor of the four-way valve 4
1 running frequency.
A kind of air-conditioner that the present invention is provided, after the constant-temperature dehumidifying function for opening air-conditioner, the root first of control unit 8
According to the detected value T of indoor temperature transmitter 5inWith user design temperature Ts, temperature difference △ T are calculated, secondly control unit 8 is according to this
Temperature difference △ T, control air-conditioner refrigeration or heating operation, temperature difference △ T are adjusted to fiducial temperature, are then passed through
Indoor humidity sensor 6 detects the relative humidity R of interiorh, work as RhDuring more than or equal to the first default humidity, control unit 8 is controlled
Air-conditioner dehumidifying operation, and the indoor heat exchanger 3 according to detected by inner disc temperature sensor 7 coil temperature TP, regulation pressure
The dehumidifying running frequency of contracting machine 1, so that TP＜ T1- the first default unit value, it is pre- so as to indoor relative humidity is reduced into first
If below humidity, after the Preset Time of continuous service first, the step of be transferred to above-mentioned calculating temperature difference.Thus long-play, i.e.,
Can be stable in the range of fiducial temperature by temperature difference △ T, while by indoor relative humidity control below the first default humidity,
It is achieved thereby that constant temperature dehumidification.Compared with prior art, the air-conditioner of the embodiment of the present invention is only passed by setting temperature indoors
Sensor and humidity sensor, set inner disc temperature sensor, you can realize the constant temperature of air-conditioner indoors on the coil pipe of heat exchanger
Dehumidifying, without concatenating dehumidification valve in the coil pipe of heat exchanger indoors, without change refrigerant stream, therefore air-conditioner design
Complexity and cost are relatively low, while ensure that the overall performance of air-conditioner.
It should be noted that in above-described embodiment, control unit 8 can control the commutation states and compressor 1 of four-way valve 4
Running frequency, that is to say, control unit 8 can control air conditioner heat-production operation, refrigerating operaton and compressor 1 in heating operation
Or frequency during refrigerating operaton.
In order to rationally control the running frequency of compressor 1, to reduce the fluctuating range of indoor temperature, it is also necessary to take into account that extraneous
The influence of environment temperature, specifically, air-conditioner also include outdoor temperature sensor (not shown), outdoor temperature sensor with
Control unit 8 is electrically connected, and thus control unit 8 can be according to the detected value of outdoor temperature sensor, and the operation of regulation compressor 1 is frequently
Rate, the larger situation of fluctuating range that is causing indoor temperature to avoid the running frequency of compressor 1 excessive or too small.
In order to reduce the temperature of the coil pipe of indoor heat exchanger 3, to increase moisture removal of the air-conditioner within the unit interval, can drop
The rotating speed of low indoor fan, so that the cold air at the coil pipe of indoor heat exchanger 3 circulates slower, at the coil pipe of indoor heat exchanger 3
Temperature is relatively low, flow through indoor heat exchanger 3 water vapor in air be condensed into condensed water amount it is more, the moisture removal in the unit interval
It is more.Therefore, control unit 8 is also electrically connected with indoor fan, and control unit 8 can adjust the rotating speed of indoor fan, so that indoor
The rotating speed of fan can be reduced to default most low gear, to reduce the temperature of the coil pipe of indoor heat exchanger 3, increase air-conditioner in unit
Moisture removal in time.
In order to balance the part cold that air-conditioner is produced in dehumidification process, to avoid fluctuations in indoor temperature amplitude larger,
Preferably, also including electrical auxiliary heater (not shown) disposed within, control unit 8 is electrically connected with electrical auxiliary heater
Connect, control unit 8 can control electrical auxiliary heater and be turned on and off, thus in air-conditioner refrigerated dehumidification, can control and open auxiliary
Electric heater is helped, to balance part refrigerating capacity of the air-conditioner in dehumidification process.
Wherein, electrical auxiliary heater can be arranged in the air channel of air conditioner room unit, it is also possible to be arranged at air conditioner chamber
At the air intake vent of interior machine, can also be arranged at the air outlet of air conditioner room unit, be not specifically limited herein.
Referring to Fig. 2, the embodiment of the present invention additionally provides a kind of constant temperature dehumidification control method of air-conditioner, including following step
Suddenly：
S1, the constant-temperature dehumidifying function for opening air-conditioner；
S2, indoor temperature transmitter detection indoor temperature Tin, control unit is according to TinWith user design temperature Ts, calculate
Temperature difference △ T=Tin- Ts；
S3, described control unit control the air-conditioner refrigeration or heating operation, by institute according to the temperature difference △ T
Temperature difference △ T are stated to adjust to fiducial temperature；
The indoor relative humidity R of S4, the detection of indoor humidity sensorh；
S5, work as RhDuring more than or equal to the first default humidity, described control unit controls the air-conditioner dehumidifying operation, and
The coil temperature T of the indoor heat exchanger according to detected by inner disc temperature sensorP, the dehumidifying running frequency of compressor is adjusted,
So that TP＜ T1- the first default unit value, after the Preset Time of continuous service first, is transferred to the step S2.
The present invention provide a kind of air-conditioner constant temperature dehumidification control method, open air-conditioner constant-temperature dehumidifying function it
Afterwards, detected value T of the control unit first according to indoor temperature transmitterinWith user design temperature Ts, temperature difference △ T are calculated, its
Secondary control unit is adjusted to default temperature temperature difference △ T according to this temperature difference △ T, control air-conditioner refrigeration or heating operation
In difference scope, indoor relative humidity R is then detected by indoor humidity sensorh, work as RhMore than or equal to the first default humidity
When, control unit control air-conditioner dehumidifying operation, and the indoor heat exchanger according to detected by inner disc temperature sensor coil pipe
Temperature TP, the dehumidifying running frequency of compressor is adjusted, so that TP＜ T1- the first default unit value, so as to by indoor relative humidity
It is reduced to below the first default humidity, after the Preset Time of continuous service first, the step of be transferred to above-mentioned calculating temperature difference.Thus it is long
Time is run, you can by temperature difference △ T stabilizations in the range of fiducial temperature, while indoor relative humidity control is pre- first
If below humidity, it is achieved thereby that constant temperature dehumidification.Compared with prior art, the constant temperature dehumidification control of embodiment of the present invention air-conditioner
Method sets inner disc temperature and passes only by setting temperature sensor and humidity sensor indoors, indoors on the coil pipe of heat exchanger
Sensor, you can realize the constant temperature dehumidification of air-conditioner, it is cold without changing without concatenating dehumidification valve in the coil pipe of heat exchanger indoors
The stream of matchmaker, therefore the design complexities and cost of air-conditioner are relatively low, while ensure that the overall performance of air-conditioner.
In the above-described embodiments, preset temperature difference may range from (- 1,1), (- 2,0), [0,2), [0,2] etc., herein
It is not specifically limited.Preferably, fiducial temperature scope for [0,2), when temperature difference is in the range of this fiducial temperature, indoor temperature Tin
It is close with user's design temperature Ts, and if carry out refrigerated dehumidification, in the short time, will not also cause indoor temperature TinSet with user
Deviation increase between temperature Ts.
Wherein, the first default humidity can be 60%, 65%, 62% etc., be not specifically limited herein.But, in order to
The comfort level requirement of human body is met, it is preferred that the first default humidity is 65%, when indoor relative humidity is more than or equal to 65%
When, humidity is larger, it is impossible to meet the comfort level requirement of human body.General, under same indoor temperature, different humidity is corresponding
Dew-point temperature is different, and under the conditions of different indoor temperatures, the dew-point temperature corresponding to same humidity is different.Therefore, when
When one default humidity is 65%, the dew-point temperature T corresponding to the first default humidity1With indoor real time temperature TinRelation it is available under
Table 1 is represented：
Table 1
| Tin(℃) | 35 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 |
| T1(℃) | 27.34 | 26.43 | 25.46 | 24.51 | 23.52 | 22.58 | 21.63 | 20.65 | 19.73 | 18.75 |
| Tin(℃) | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| T1(℃) | 17.83 | 16.88 | 15.91 | 14.97 | 14.02 | 13.07 | 12.15 | 11.19 | 10.24 | 9.3 |
It should be noted that in embodiments of the present invention, only being illustrated by taking above-mentioned table 1 as an example, above-mentioned table 1 is not to this
Inventive embodiments are constituted and limited.
In addition, the first Preset Time can be 3min, 5min, 7min etc. are not specifically limited herein.But, in order to
Ensure air-conditioner dehumidifying reliability of operation and stability, it is preferred that the first Preset Time is more than or equal to 5min, when first pre-
If the time is less than 5min, in the process of running, the switch speed of cooling and warming is too fast for air-conditioner, the frequency change speed of compressor
Spend soon, the reliability and stability in air-conditioner dehumidifying running are relatively low.
Furthermore, the first default unit value can be 1 DEG C, 0.8 DEG C, 0.5 DEG C etc., be not specifically limited herein.
Specifically, step S5 is comprised the following steps：
S51, control unit control air-conditioner refrigerating operaton, and make compressor initial launch frequency be F01；
After S52, the Preset Time of continuous service second, inner disc temperature sensor detects the coil temperature T of indoor heat exchangerP；
If S53, TP≥T1- the first default unit value, then increase the first predeterminated frequency by the current operation frequency of compressor；
If TP＜ T1- the first default unit value, then keep the running frequency of compressor constant.
Wherein, the second Preset Time is less than the first Preset Time, and the second Preset Time can be 3min, 5min, 7min etc.
Deng being not specifically limited herein.But, in order to ensure air-conditioner dehumidifying reliability of operation and stability, it is preferred that second is pre-
If the time is more than or equal to 5min.
In addition, the first predeterminated frequency is determined by experiment, the value at this to the first predeterminated frequency is not specifically limited.
Furthermore, F01Can be default fixed value, it is also possible to be determined according to the temperature difference △ T under current state,
This is not specifically limited.But, it is excellent to reduce the fluctuating range of indoor temperature in order to rationally control the running frequency of compressor
Choosing determines the running frequency of compressor according to the temperature difference △ T under current state, specifically, F01With temperature difference △ T positive correlations.By
This defines the dehumidifying running frequency F of compressor according to temperature difference △ T01, to avoid the running frequency of compressor excessive or too small
And cause the larger situation of the fluctuating range of indoor temperature.
If temperature difference △ T are located in the range of fiducial temperature, and RhHumidity is preset less than first, then indoor temperature and humidity
Condition is satisfied by, now, air-conditioner can perform the operation such as shutdown, heating operation, cooling operation, be not specifically limited herein.
And the minimum value in the range of fiducial temperature be more than or equal to 0 when, then after step s4, if RhLess than the first default humidity,
It is preferred that air-conditioner performs the operation of cooling operation, to reduce indoor temperature, so that indoor temperature sets temperature closer to user
Degree Ts.
Specifically, when the minimum value in the range of fiducial temperature is more than or equal to 0, it is after step s4, empty referring to Fig. 3
Adjusting the constant temperature dehumidification control method of device also includes：S5 ', work as RhLess than the first default humidity, during more than the second default humidity, control
Unit controls air-conditioner refrigerating operaton, after continuing the 3rd Preset Time, is transferred to step S2.Thus indoor temperature can be reduced, so that
Design temperature Ts of the indoor temperature closer to user.
Wherein, less than the first default humidity, the second default humidity can be 40%, 35%, 38% etc. to the second default humidity
Deng being not specifically limited herein.But, in order to meet the comfort level requirement of human body, it is preferred that the second default humidity is 40%,
When indoor relative humidity is less than or equal to 40%, indoor relative humidity is smaller, and human body easily feels drying.
In addition, the 3rd Preset Time can be 3min, 5min, 7min etc. are not specifically limited herein.But, in order to
Ensure air-conditioner dehumidifying reliability of operation and stability, it is preferred that the 3rd Preset Time is more than or equal to 5min.Further
, when the minimum value in the range of fiducial temperature is more than or equal to 0, referring to Fig. 3, after step s4, the constant temperature of air-conditioner is removed
Wet control method also includes：S5 〞, work as RhDuring less than or equal to the second default humidity, control unit control air-conditioner refrigerating operaton,
And the coil temperature T of the indoor heat exchanger according to detected by inner disc temperature sensorP, adjust the refrigerating operaton of compressor frequently
Rate, so that TP＞ T2+ the second default unit value, after the Preset Time of continuous service the 4th, is transferred to step S2.Thus, on the one hand, can
Indoor temperature is reduced, so that design temperature Ts of the indoor temperature closer to user；On the other hand, due to TP＞ T2+ the second presets
Unit value, therefore, now, air-conditioner can not be dehumidified, to prevent the further reduction of indoor relative humidity, so as to avoid
Excessive dehumidifying.
Wherein, T2Dew-point temperature corresponding to the second default humidity under current indoor temperature, example, when second default
When humidity is 40%, the dew-point temperature T corresponding to the second default humidity2With indoor real time temperature TinRelation can with table 2 below come
Represent：
Table 2
| Tin(℃) | 35 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 |
| T2(℃) | 19.23 | 18.47 | 17.44 | 16.56 | 15.65 | 14.87 | 13.91 | 12.97 | 12.12 | 11.25 |
| Tin(℃) | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| T2(℃) | 10.32 | 9.47 | 8.6 | 7.69 | 6.83 | 5.95 | 5.05 | 4.22 | 3.33 | 2.47 |
It should be noted that in embodiments of the present invention, only being illustrated by taking above-mentioned table 2 as an example, above-mentioned table 2 is not to this
Inventive embodiments are constituted and limited.
In addition, the 4th Preset Time can be 3min, 5min, 7min etc. are not specifically limited herein.But, in order to
Ensure air-conditioner dehumidifying reliability of operation and stability, it is preferred that the 4th Preset Time is more than or equal to 5min.
Furthermore, the second default unit value can be 1 DEG C, 0.8 DEG C, 0.5 DEG C etc., be not specifically limited herein.
Specifically, step S5 〞 include：
S51 〞, control unit control air-conditioner refrigerating operaton, and make compressor initial launch frequency be F02；
After S52 〞, the Preset Time of continuous service the 5th, inner disc temperature sensor detects the coil temperature T of indoor heat exchangerP；
If S53 〞, TP≤T2+ the second default unit value, then by current operation frequency second predeterminated frequency of reduction of compressor；
If TP＞ T2+ the second default unit value, then keep the running frequency of compressor constant.
Wherein, the second predeterminated frequency is determined that the value at this to the second predeterminated frequency is not specifically limited by experiment.
In addition, the 5th Preset Time is less than the 4th Preset Time, the 5th Preset Time can be 3min, 5min, 7min etc.
Deng being not specifically limited herein.But, in order to ensure air-conditioner dehumidifying reliability of operation and stability, it is preferred that the 5th is pre-
If the time is more than or equal to 5min.
Furthermore, F02Can be default fixed value, it is also possible to be determined according to the temperature difference △ T under current state,
This is not specifically limited.But, it is excellent to reduce the fluctuating range of indoor temperature in order to rationally control the running frequency of compressor
Choosing determines the running frequency of compressor according to the temperature difference △ T under current state, specifically, F02With temperature difference △ T positive correlations.By
This determines the dehumidifying running frequency F of compressor according to temperature difference △ T02, to avoid the running frequency of compressor excessive or too small
And cause the larger situation of the fluctuating range of indoor temperature.
In the embodiment shown in Figure 2, specifically, step S3 includes：S31, when △ T more than in the range of fiducial temperature most
During big value, control unit control air-conditioner refrigerating operaton；S32, when △ T be located at fiducial temperature in the range of when, be transferred to step S4；
S33, when △ T are less than minimum value in the range of fiducial temperature, control unit control air conditioner heat-production operation.Thus can be by temperature
Difference △ T are adjusted to fiducial temperature.
In step S31, in order to determine whether temperature difference △ T are located in fiducial temperature after air-conditioner refrigerating operaton, can be with
During air-conditioner refrigerating operaton, real-time detection temperature difference △ T, it is also possible to when air-conditioner is default per refrigerating operaton the 6th
Between after, then detection temperature difference △ T are not specifically limited herein.But, in order to reduce the detection frequency of temperature difference △ T, preferably adopt
Use above-mentioned second scheme, i.e. after air-conditioner is per the Preset Time of refrigerating operaton the 6th, then detection temperature difference △ T, until temperature
Difference △ T are located in the range of fiducial temperature, then are transferred to step S4.
Similarly, in step S33, in order to whether temperature difference △ T are located at fiducial temperature after determining air conditioner heat-production operation
It is interior, can be during air conditioner heat-production run, real-time detection temperature difference △ T, it is also possible in air-conditioner per heating operation the
After seven Preset Times, then detection temperature difference △ T, it is not specifically limited herein.But, in order to reduce temperature difference △ T detection frequently
Rate, it is preferred to use above-mentioned second scheme, i.e. after air-conditioner is per the Preset Time of refrigerating operaton the 7th, then detection temperature difference △
T, until temperature difference △ T are located in the range of fiducial temperature, then is transferred to step S4.
Wherein, the 6th Preset Time and the 7th Preset Time can be 3min, 5min, 7min etc., not do specific herein
Limit.But, in order to ensure that air-conditioner dehumidifies reliability of operation and stability, it is preferred that the 6th Preset Time and the 7th pre-
If the time is more than or equal to 5min.
Further, since air-conditioner while dehumidifying also in refrigeration, therefore in order to the dehumidifying operation for giving air-conditioner follow-up is pre-
Certain refrigerating capacity is stayed, air-conditioner heating operation should make temperature difference △ T than the minimum value in the range of fiducial temperature in step S33
At least default greatly unit value, thus reserves certain refrigerating capacity with the dehumidifying operation for giving air-conditioner follow-up.
Wherein, default unit value can be 1 DEG C, 0.5 DEG C, 0.8 DEG C etc., be not specifically limited herein.
In step S31, during air-conditioner refrigerating operaton, the running frequency of compressor can be default fixed value, also may be used
It is determined with according to the temperature difference △ T under current state, is not specifically limited herein.But, in order to rationally control compressor
Running frequency, to reduce the fluctuation range of indoor temperature, compressor is preferably determined according to the temperature difference △ T under current state
Running frequency, specifically, in step S31, the frequency of compressor is target frequency F during air-conditioner refrigerating operatonobj, target
Frequency FobjWith temperature difference △ T positive correlations.The refrigerating operaton frequency of compressor is determined thus according to temperature difference △ T, to avoid pressure
The running frequency of contracting machine is excessive or too small and situation that fluctuating range that cause indoor temperature is larger.
Wherein, in step S31, during air-conditioner refrigerating operaton, air-conditioner can dehumidify, it is also possible to not dehumidify, tool
Body is according to target frequency FobjWith F0Between magnitude relationship determine, work as Fobj≥F0When, air-conditioner freezes and dehumidifies simultaneously；Work as Fobj
＜ F0When, air-conditioner only freezes, and does not dehumidify.
In step S33, when air conditioner heat-production runs, the running frequency of compressor can be default fixed value, also may be used
With the detected value R according to indoor humidity sensorhIt is determined, is not specifically limited herein.But, due to indoor relative humidity
Decline with the rising of indoor temperature, therefore air-conditioner is in heating operations, if indoor relative humidity is larger, should quickly raise
Indoor temperature, to improve the reduction speed of indoor relative humidity, if indoor relative humidity is smaller, should slowly raise Indoor Temperature
Degree, to reduce the reduction speed of indoor relative humidity.Specifically, before step S33, also including：Indoor humidity sensor is examined
Survey indoor relative humidity Rh, accordingly, in step S33, if RhHumidity is preset more than or equal to first, then air conditioner heat-production
The frequency of compressor is first frequency F in running1If, RhWhen being more than the second default humidity less than the first default humidity, then
The frequency of compressor is second frequency F in air conditioner heat-production running2If, RhIt is during less than or equal to the second default humidity, then empty
The frequency for adjusting compressor in device heating process is the 3rd frequency F3, F1＞ F2＞ F3.Determine thus according to indoor relative humidity
The heating operation frequency of compressor, so that air-conditioner is in heating operation, indoor relative humidity can more level off to human body and relax
In appropriate scope.
In the above-described embodiments, indoor temperature is caused because the running frequency of compressor is excessive or too small to prevent
The larger situation of fluctuating range, it is also necessary to take into account that the influence of ambient temperature, specifically, F1、F2、F3It is outdoor temperature
The detected value T of sensoroutCorrelation function, the heating operation frequency range of compressor is limited from there through outdoor temperature, with
Avoid the occurrence of makes indoor temperature raise suddenly because the heating operation frequency of compressor is excessive, too small and make indoor temperature for a long time
Situation about can not be improved, so as to improve the stationarity of indoor temperature elevation process.
Specifically, F1、F2、F3With ToutBetween relation curve may refer to Fig. 4, F1、F2、F3Can be expressed as：
Fi=Fi_max- (Fi_max- Fi_min)×(Tout- Tmin)/(Tmax- Tmin),
Wherein, i=1,2 or 3, TminAnd TmaxMinimum value and maximum respectively in uniform temperature interval, example,
Tmin=20 DEG C, Tmax=30 DEG C, during air conditioner heat-production, Fi_minIt is as ambient temperature Tout＞ TmaxWhen, compressor is heated
Running frequency, Fi_maxIt is as ambient temperature Tout＜ TminWhen, the heating operation frequency of compressor, Fi_minAnd Fi_maxIt is also
On the premise of lot of experimental data collection is carried out, according to certain algorithm and incorporate experience into what is drawn.
In order to reduce the temperature of indoor heat exchanger coil pipe, to increase moisture removal of the air-conditioner within the unit interval, can drop
The rotating speed of low indoor fan, so that the cold air at indoor heat exchanger coil pipe circulates slower, the temperature at indoor heat exchanger coil pipe
Degree is relatively low, flow through indoor heat exchanger water vapor in air be condensed into condensed water amount it is more, moisture removal in the unit interval compared with
It is many.Therefore, in step S53, also include：The rotating speed of control unit control indoor fan is reduced to default most low gear, to reduce room
The temperature of interior heat exchanger coils, increases moisture removal of the air-conditioner within the unit interval.
In step S53, work as TP≥T1During the-the first default unit value, control unit is by the current operation frequency of compressor
While increasing the first predeterminated frequency, in order to balance the refrigerating capacity of compressor frequency augmenting portion, it is preferred that work as TP≥T1- the first
During default unit value, control unit also controls electrical auxiliary heater to open, and pressure is balanced from there through electrical auxiliary heater is opened
The refrigerating capacity of contracting unit frequency augmenting portion.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (15)
1. a kind of air-conditioner, including by compressor, indoor heat exchanger, outdoor heat exchanger, four-way valve, indoor fan and outdoor fan
The refrigerating and heating systems of composition, it is characterised in that also passed including indoor temperature transmitter, indoor humidity sensor, inner disc temperature
Sensor and control unit, the inner disc temperature sensor are used to detect the coil temperature of the indoor heat exchanger, the control list
It is first with the indoor temperature transmitter, the indoor humidity sensor, the inner disc temperature sensor, the four-way valve and described
Compressor is electrically connected, and described control unit can control the operation of the commutation states and the compressor of the four-way valve frequently
Rate.
2. air-conditioner according to claim 1, it is characterised in that also including outdoor temperature sensor, the outdoor temperature
Sensor is electrically connected with described control unit, and described control unit can be adjusted according to the detected value of the outdoor temperature sensor
The running frequency of the compressor.
3. air-conditioner according to claim 1, it is characterised in that described control unit is electrically connected with the indoor fan,
Described control unit can adjust the rotating speed of the indoor fan.
4. air-conditioner according to claim 1, it is characterised in that described also including electrical auxiliary heater disposed within
Control unit is electrically connected with the electrical auxiliary heater, and described control unit can control the electrical auxiliary heater and open or close
Close.
5. a kind of constant temperature dehumidification control method of air-conditioner, it is characterised in that comprise the following steps：
S1, the constant-temperature dehumidifying function for opening air-conditioner；
S2, indoor temperature transmitter detection indoor temperature Tin, control unit is according to TinWith user design temperature Ts, temperature difference is calculated
△ T=Tin- Ts；
S3, described control unit control the air-conditioner refrigeration or heating operation, by the temperature according to the temperature difference △ T
Degree difference △ T are adjusted to fiducial temperature；
The indoor relative humidity R of S4, the detection of indoor humidity sensorh；
S5, work as RhDuring more than or equal to the first default humidity, described control unit controls the air-conditioner dehumidifying to run, and according to
The coil temperature T of the indoor heat exchanger detected by inner disc temperature sensorP, the dehumidifying running frequency of compressor is adjusted, so that TP
＜ T1- the first default unit value, after the Preset Time of continuous service first, is transferred to the step S2；
Wherein, T1Dew-point temperature corresponding to the first default humidity under current indoor temperature.
6. constant temperature dehumidification control method according to claim 5, it is characterised in that the step S5 is specifically included：
S51, control unit control the air-conditioner refrigerating operaton, and make the initial launch frequency of the compressor be F01；
After S52, the Preset Time of continuous service second, inner disc temperature sensor detects the coil temperature T of indoor heat exchangerP；
If S53, TP≥T1- the first default unit value, then increase the first predeterminated frequency by the current operation frequency of the compressor；
If TP＜ T1- the first default unit value, then keep the running frequency of the compressor constant；
Wherein, the second Preset Time is less than the first Preset Time.
7. constant temperature dehumidification control method according to claim 5, it is characterised in that in the preset temperature difference scope most
Small value is more than or equal to 0, after the step S4, also includes：
S5 ', work as RhLess than the described first default humidity, and when being more than the second default humidity, described control unit controls the air-conditioning
Device refrigerating operaton, after the Preset Time of continuous service the 3rd, is transferred to the step S2,
Wherein, the described second default humidity is less than the described first default humidity.
8. constant temperature dehumidification control method according to claim 5, it is characterised in that in the preset temperature difference scope most
Small value is more than or equal to 0, after the step S4, also includes：
S5 〞, work as RhDuring less than or equal to the second default humidity, the described control unit control air-conditioner refrigerating operaton, and according to
The coil temperature T of the indoor heat exchanger detected by inner disc temperature sensorP, the refrigerating operaton frequency of compressor is adjusted, so that TP
＞ T2+ the second default unit value, after the Preset Time of continuous service the 4th, is transferred to the step S2,
Wherein, T2Dew-point temperature corresponding to the second default humidity under current indoor temperature.
9. constant temperature dehumidification control method according to claim 8, it is characterised in that the step S5 〞 are specifically included：
S51 〞, control unit control the air-conditioner refrigerating operaton, and make the initial launch frequency of compressor be F02；
After S52 〞, the Preset Time of continuous service the 5th, inner disc temperature sensor detects the coil temperature T of indoor heat exchangerP；
If S53 〞, TP≤T2+ the second default unit value, then by current operation frequency second predeterminated frequency of reduction of the compressor；
If TP＞ T2+ the second default unit value, then keep the running frequency of the compressor constant；
Wherein, the 5th Preset Time is less than the 4th Preset Time.
10. constant temperature dehumidification control method according to claim 5, it is characterised in that the step S3 is specifically included：
S31, when △ T are more than maximum in the range of the fiducial temperature, described control unit controls the air-conditioner refrigeration
Operation；
S32, when △ T be located at the fiducial temperature in the range of when, be directly transferred to the step S4；
S33, when △ T are less than minimum value in the range of the fiducial temperature, described control unit controls the air conditioner heat-production
Operation.
11. constant temperature dehumidification control methods according to claim 10, it is characterised in that in the step S31, the air-conditioning
The frequency of compressor is target frequency F during device refrigerating operatonobj, the target frequency FobjWith temperature difference △ T positive correlations.
12. constant temperature dehumidification control methods according to claim 10, it is characterised in that before the step S33, also wrap
Include：
The indoor relative humidity R of indoor humidity sensor detectionh；
Accordingly, in the step S33,
If RhMore than or equal to the first default humidity, then the frequency of compressor is the first frequency in the air conditioner heat-production running
Rate F1,
If RhWhen being more than the second default humidity less than the described first default humidity, then pressed in the air conditioner heat-production running
The frequency of contracting machine is second frequency F2,
If RhDuring less than or equal to the second default humidity, then the frequency of compressor is the 3rd in the air conditioner heat-production running
Frequency F3,
F1＞ F2＞ F3。
13. constant temperature dehumidification control methods according to claim 12, it is characterised in that F1、F2、F3It is outdoor temperature biography
The detected value T of sensoroutCorrelation function.
14. constant temperature dehumidification control methods according to claim 6, it is characterised in that in the step S53, also include：
The rotating speed of described control unit control indoor fan is reduced to default most low gear.
15. constant temperature dehumidification control methods according to claim 6, it is characterised in that in the step S53, if TP≥
T1- the first presets unit value, then described control unit also controls electrical auxiliary heater to open.
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| CN112212474A (en) * | 2020-09-14 | 2021-01-12 | 海信（山东）空调有限公司 | Dehumidifier and dehumidification control method |
| CN112432239A (en) * | 2020-10-28 | 2021-03-02 | 青岛海尔空调器有限总公司 | Constant-temperature dehumidification system and control method of air conditioner and air conditioner |
| CN112432239B (en) * | 2020-10-28 | 2022-05-31 | 重庆海尔空调器有限公司 | Constant-temperature dehumidification system of air conditioner, control method and air conditioner |
| CN112747436A (en) * | 2021-01-04 | 2021-05-04 | 青岛海尔空调器有限总公司 | Control method for dehumidification of air conditioner and air conditioner |
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Address after: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant after: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Address before: 266736 Hisense Road 1, South Village Town, Pingdu City, Qingdao, Shandong Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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Address after: No.1 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Hisense Air Conditioning Co.,Ltd. Country or region after: China Address before: No. 151, Zhuzhou Road, Laoshan District, Qingdao, Shandong Patentee before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Country or region before: China |
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