CN105526672B - A kind of reheat dehumidification system temperature/humidity control method - Google Patents
A kind of reheat dehumidification system temperature/humidity control method Download PDFInfo
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- CN105526672B CN105526672B CN201510926313.4A CN201510926313A CN105526672B CN 105526672 B CN105526672 B CN 105526672B CN 201510926313 A CN201510926313 A CN 201510926313A CN 105526672 B CN105526672 B CN 105526672B
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- 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
- F24F11/30—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
- F24F11/70—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
- 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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
Abstract
The present invention relates to a kind of reheat dehumidification system temperature/humidity control method, the reheat dehumidification system includes the interior machine First Heat Exchanger for dehumidifying and the second heat exchanger of interior machine for heating；The temperature/humidity control method includes humidity control method and temprature control method, wherein humidity control method adjusts system low-voltage according to air dew point comprising steps of according to indoor humidity calculating air dew point, and interior machine First Heat Exchanger is made dehumidify or do not dehumidify；And, wherein temprature control method is comprising steps of the second heat exchanger of machine heat or do not heat in controlling.Reheat dehumidification system temperature/humidity control method of the invention is able to solve the independent control problem of epidemic disaster, can meet user simultaneously to the different demands of temperature and humidity, keep environmental degree of comfort higher.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to a kind of reheat dehumidification system temperature/humidity control method.
Background technique
Different places have different needs temperature and humidity, to adapt to this demand, produce the reheat dehumidification of air-conditioning
System.In such systems, interior machine generally includes two heat exchangers, when running reheat dehumidification function, two heat exchanger difference
Dehumidification portion and reheating portion are acted on into, pressure fan blows room air and successively passes through dehumidification portion and reheating portion, thus in dehumidification portion
Hydrogenesis in air is come out, then heats the air that humidity reduces in reheating portion.In reheat dehumidification system,
The control of temperature and humidity is vital.
In the prior art, for reheat dehumidification system, especially for the reheat dehumidification system of home multi-line product, still
Lack effective temperature/humidity control method, it especially can not independent control temperature and humidity.
Therefore, on the basis of reheat dehumidification system, propose that a kind of efficient temperature/humidity control method is very necessary.
Summary of the invention
The main purpose of the present invention is to provide a kind of reheat dehumidification system temperature/humidity control method, be able to achieve to temperature,
The independent control of humidity improves the comfort level of user to meet the different demands of user.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of reheat dehumidification system temperature/humidity control method, the reheat dehumidification system include the interior machine first for dehumidifying
Heat exchanger and the second heat exchanger of interior machine for heating；The temperature/humidity control method includes humidity control method and temperature control
Method, wherein humidity control method comprising steps of
According to indoor humidity calculate air dew point, according to air dew point adjust system low-voltage, make interior machine First Heat Exchanger into
Row dehumidifying or not；
And, wherein temprature control method comprising steps of
The second heat exchanger of machine heat or do not heat in controlling.
Preferably, in humidity control method, it is described according to air dew point adjust system low-voltage include: true according to air dew point
Determine the dehumidifying reference value of system low-voltage, and adjust system low-voltage below or above the dehumidifying reference value, wherein with the dehumidifying
The corresponding interior machine First Heat Exchanger temperature of reference value is lower than air dew point.
Preferably, machine First Heat Exchanger is dehumidified, the second heat exchanger of interior machine is heated in control, removes the reheating
Wet system realizes heating dehumidifying.
Preferably, the reheat dehumidification system includes the first expansion valve of interior machine being connected on interior machine First Heat Exchanger pipeline
With the second expansion valve of interior machine for being connected to interior the second Tube Sheet of Heat Exchanger of machine road, wherein realize and heat up in the reheat dehumidification system
During dehumidifying, the aperture of interior second expansion valve of machine is opened to the maximum.
Preferably, machine First Heat Exchanger is dehumidified in controlling, the second heat exchanger of interior machine is without heating, makes the reheating
Dehumidification system realizes cool-down dehumidification.
Preferably, the reheat dehumidification system includes the first expansion valve of interior machine being connected on interior machine First Heat Exchanger pipeline
With the second expansion valve of interior machine for being connected to interior the second Tube Sheet of Heat Exchanger of machine road, wherein realize and cool down in the reheat dehumidification system
During dehumidifying, the aperture of interior second expansion valve of machine is closed to minimum.
Preferably, machine First Heat Exchanger is dehumidified, the second heat exchanger of interior machine is intermittently heated in control, makes institute
It states reheat dehumidification system and realizes constant temperature dehumidification.
Preferably, the reheat dehumidification system includes the first expansion valve of interior machine being connected on interior machine First Heat Exchanger pipeline
With the second expansion valve of interior machine for being connected to interior the second Tube Sheet of Heat Exchanger of machine road, wherein realize constant temperature in the reheat dehumidification system
During dehumidifying, the aperture of interior second expansion valve of machine intermittently opens to the maximum and closes minimum.
Preferably, the mode that the second heat exchanger of machine is intermittently heated in controlling includes: when room temperature compares user
When low first preset value of set temperature, control in the second heat exchanger of machine heated；When room temperature is higher than user set temperature
When the second preset value, interior the second heat exchanger of machine is controlled without heating.
Preferably, first preset value is 1~3 DEG C, and/or, second preset value is 1~3 DEG C.
Reheat dehumidification system temperature/humidity control method of the invention is able to solve the independent control problem of epidemic disaster, can be same
When meet user to the different demands of temperature and humidity, keep environmental degree of comfort higher.Reheat dehumidification system temperature and humidity of the invention
In control method, the temperature and humidity of system detection environment, adjustment capability output makes that system is more energy efficient, user is more comfortable.
Detailed description of the invention
Hereinafter reference will be made to the drawings to the preferred embodiment of reheat dehumidification system temperature/humidity control method according to the present invention
It is described.In figure:
Fig. 1 is the schematic diagram of reheat dehumidification system according to the present invention.
Specific embodiment
The invention proposes a kind of reheat dehumidification system temperature/humidity control method, can according to the dehumidification of user come
Independent control epidemic disaster.Wherein, preferably as shown in Figure 1, the reheat dehumidification system includes the heat exchange of interior machine first for dehumidifying
Device 3 and the second heat exchanger of interior machine 4 for heating；The temperature/humidity control method includes humidity control method and temperature controlling party
Method, wherein humidity control method comprising steps of
According to indoor humidity calculate air dew point, according to air dew point adjust system low-voltage, make interior machine First Heat Exchanger 3 into
Row dehumidifying or not；
And, wherein temprature control method comprising steps of
The second heat exchanger of machine 4 heat or do not heat in controlling.
For example, unit can detect indoor humidity by interior machine humidity sensor, to calculate air dew point.
According to the dehumidification of user, control method of the invention can be by the relationship of control target low-pressure and dew point come real
Now whether dehumidify；Whether demand according to user to temperature, control method of the invention can be by controlling the second heat exchanger of interior machine
Heating is to realize heating, cooling.Then, control method of the invention can carry out independent control epidemic disaster according to the demand of user, full
The different dehumidification of sufficient user.
Preferably, in humidity control method wherein, it is described according to air dew point adjust system low-voltage include: according to sky
Gas dew point determines the dehumidifying reference value of the low pressure of system, and adjusts system low-voltage below or above the dehumidifying reference value, wherein
Interior machine First Heat Exchanger temperature corresponding with the dehumidifying reference value is lower than air dew point.
For example, interior machine humidity sensor detects that air humidity, interior machine temperature sensing package detect that air themperature, system-computed go out
Air dew point, and determine therefrom that out a target low-pressure dehumidifying reference value, i.e. target low pressure value (this value pair for the reference that dehumidifies
The interior machine First Heat Exchanger temperature answered is lower than dew point), then, when there is dehumidification, system low-voltage can be controlled and be removed herein
Wet reference value hereinafter, so that interior machine First Heat Exchanger carry out refrigerated dehumidification, and humidity reach requirement or without dehumidifying need
When asking, system low-voltage can dehumidify more than reference value herein.
Preferably, when user needs to dehumidify and leaving air temp is higher than room temperature, can control in machine First Heat Exchanger 3 into
Row dehumidifying, the second heat exchanger of interior machine 4 are heated, and the reheat dehumidification system can be made to realize heating dehumidifying.
Preferably, when user needs to dehumidify and leaving air temp is lower than room temperature, can control in machine First Heat Exchanger 3 into
Row dehumidifying, the second heat exchanger of interior machine 4 can make the reheat dehumidification system realize cool-down dehumidification without heating.
Preferably, when user needs to dehumidify and leaving air temp is identical as room temperature, it can control interior machine First Heat Exchanger 3
Dehumidified, the second heat exchanger of interior machine 4 is intermittently heated, the reheat dehumidification system can be made to realize constant temperature dehumidification.
Fig. 1 schematically illustrates the schematic diagram of reheat dehumidification system according to the present invention.Typically, which includes pressure
Contracting machine, outer machine heat exchanger 9 and interior machine (such as bedroom air-conditioning internal machine) 7.Wherein, interior machine 7 includes interior machine First Heat Exchanger 3, interior machine
Second heat exchanger 4, the first expansion valve of interior machine (preferably electric expansion valve) 5 being connected on interior 3 pipeline of machine First Heat Exchanger and
The second expansion valve of interior machine (preferably electric expansion valve) 6 being connected on interior 4 pipeline of the second heat exchanger of machine.As shown, interior machine
One heat exchanger 3 and the second heat exchanger of interior machine 4 are arranged to the upstream that the former is located at air-out direction, and the latter is located under air-out direction
Trip, so that room air first passes through interior machine First Heat Exchanger 3, is then blown out using interior the second heat exchanger of machine 4.
In addition, the system further includes that the first four-way valve 8 and the outer machine expansion valve being connected on outer 9 pipeline of machine heat exchanger are (excellent
Select electric expansion valve) 1, wherein the first four-way valve 8 is heated or is freezed for controlling outer machine, namely for connect compressor,
Outer machine heat exchanger and interior machine First Heat Exchanger, that is, the four-way valve of the execution conventional func in common air-conditioning system.
Compared with common multi-line system, reheat dehumidification system of the invention increases one and is carried out by outer machine to interior machine
The height air pipe of heating, while interior the second heat exchanger of machine 4 and the second expansion valve of interior machine 6 are increased in interior machine, the increased height of institute
The second four-way valve 2 is provided in low-pressure air pipe, to be used for connect compressor and the second heat exchanger of interior machine 4, interior the second heat exchanger of machine 4
By the common adjusting of the second four-way valve 2 and the second expansion valve of interior machine 6, it can be achieved that refrigeration and heating.It is indoor in reheat dehumidification
Air first passes through interior machine First Heat Exchanger 3 and carries out refrigerated dehumidification, is heated using interior the second heat exchanger of machine 4, to realize
Reheat dehumidification.
In addition, the system can also include being connected to the gas-liquid separator at suction port of compressor end and being connected to compressor
The oil eliminator of outlet end.
On the basis of above system, it is preferable that described during the reheat dehumidification system realizes heating dehumidifying
Control method (the i.e. conventional refrigeration mode control of machine electric expansion valve in refrigeration mode for example can be used in interior the first expansion valve of machine 5
Method processed), and the aperture of second expansion valve of interior machine 6 opens to the maximum.
Specifically, when room temperature is lower and humidity is larger, need to heat up dehumidifying, under this situation, when unit is run,
The power-off of first four-way valve 8, the second four-way valve 2 power on, so that interior 3 refrigerated dehumidification of machine First Heat Exchanger, the second heat exchanger of interior machine 4 are made
Heat, room air first pass through the First Heat Exchanger 3 that tube temperature is lower than air dew point, realize refrigerated dehumidification, and interior machine first expands at this time
Valve 5 uses the control method of machine electric expansion valve in refrigeration mode, and the aperture of the second expansion valve of interior machine 6 opens to the maximum, and makes height
Warm high-pressure gaseous refrigerant condenses heat release in interior the second heat exchanger of machine 4, and the heating air cooling by interior machine First Heat Exchanger 5 is real
Leaving air temp can be made to increase again while now dehumidifying.
Preferably, during the reheat dehumidification system realizes cool-down dehumidification, interior first expansion valve of machine 5 is for example
It still can be used the control method (i.e. conventional refrigeration mode control method) of machine electric expansion valve in refrigeration mode, and the interior machine
The aperture of second expansion valve 6 is closed to minimum.
Specifically, when room temperature is higher and humidity is larger, cool-down dehumidification is needed, under this situation, when unit is run
Control method it is essentially identical when dehumidifying with heating, it is different only to need to close the aperture of interior the second expansion valve of machine 6 to minimum,
So that a large amount of liquid refrigerants of accumulation, effective heat exchange area reduce in interior the second heat exchanger of machine 4, interior the second heat exchanger of machine 4 is lost
The effect of heating, so that machine First Heat Exchanger 3 carries out refrigerated dehumidification in only, leaving air temp is reduced while realizing dehumidifying.
Preferably, during the reheat dehumidification system realizes constant temperature dehumidification, interior first expansion valve of machine 5 is for example
The control method (i.e. conventional refrigeration mode control method) of machine electric expansion valve in refrigeration mode still can be used, and be in realization
Heated to 4 intermittence of the second heat exchanger of machine, then make the aperture of second expansion valve of interior machine 6 intermittently open to the maximum and
Close minimum.
Preferably, during the reheat dehumidification system realizes constant temperature dehumidification, interior machine the second heat exchanger interval is controlled
The mode heated to property may is that when room temperature the first preset value (such as 1~3 DEG C) lower than user set temperature,
The second heat exchanger of machine 4 is heated in controlling；When room temperature the second preset value (such as 1~3 DEG C) higher than user set temperature
When, the second heat exchanger of interior machine 4 is controlled without heating.
Specifically, after running heating dehumidifying or cool-down dehumidification for a period of time, if room temperature has been approached or crosses user
When set temperature but still larger humidity, constant temperature dehumidification can proceed with, that is, when room temperature is lower than user's set temperature for example
At 1~3 DEG C, the aperture of interior the second expansion valve of machine 6 is opened to the maximum from minimum, and interior the second heat exchanger of machine 4 is heated, and is removed with heating
Cold air after wet；When room temperature is higher than such as 1~3 DEG C of user's set temperature, the aperture of interior the second expansion valve of machine 6 is from most
To minimum, interior the second heat exchanger of machine 4 loses heating capacity for high point.In this way, by the intermittent switch of interior the second expansion valve of machine 6,
The constant temperature dehumidification effect of user demand can be achieved.
When indoor initial temperature is moderate but humidity is larger, it is also desirable to which constant temperature dehumidification, under this situation, system is first determined whether
The relationship (the two may be close but not essentially equal) of indoor actual temperature and user's set temperature, and then according to the difference
The positive and negative aperture for starting to adjust interior the second expansion valve of machine 6, control process hereafter then with the control process phase under former
Together, that is, switching by the intermittent of interior the second expansion valve of machine 6, the constant temperature dehumidification effect of user demand is realized.
Reheat dehumidification system temperature/humidity control method of the invention is by real-time regulating system low voltage value and environment first
The relationship of air dew point, to meet the different dehumidification of user.Further, reheat dehumidification system temperature and humidity control of the invention
Method processed is by interior the first expansion valve of machine and the second expansion valve of interior machine come the leaving air temp of co- controlling indoor unit, it can be achieved that heating
Dehumidifying, constant temperature dehumidification and cool-down dehumidification.
It is same that reheat dehumidification system temperature/humidity control method of the invention solves the epidemic disaster that cannot achieve in the prior art
When the problem of controlling.Control method of the invention is also solved according to user demand epidemic disaster control in range of set value,
The problem of realizing the independent control of epidemic disaster.It is reasonable according to the epidemic disaster of environment that control method of the invention also achieves system
Adjustment capability output, makes that system is more energy efficient, the more comfortable effect of user.
Those skilled in the art will readily recognize that above-mentioned each preferred embodiment can be free under the premise of not conflicting
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is merely exemplary, and not restrictive, without departing from of the invention basic
In the case where principle, those skilled in the art can be directed to the various apparent or equivalent modification or replace that above-mentioned details is made
It changes, is all included in scope of the presently claimed invention.
Claims (9)
1. a kind of reheat dehumidification system temperature/humidity control method, which is characterized in that the reheat dehumidification system includes for dehumidifying
Interior machine First Heat Exchanger and the second heat exchanger of interior machine for heating；The temperature/humidity control method includes humidity control method
And temprature control method, wherein humidity control method comprising steps of
Air dew point is calculated according to indoor humidity, system low-voltage is adjusted according to air dew point, removes interior machine First Heat Exchanger
It is wet or do not dehumidify；
And, wherein temprature control method comprising steps of
The second heat exchanger of machine heat or do not heat in controlling；
In humidity control method, it is described according to air dew point adjust system low-voltage include: that system low-voltage is determined according to air dew point
Dehumidifying reference value, and adjust system low-voltage below or above the dehumidifying reference value, wherein corresponding with the dehumidifying reference value
Interior machine First Heat Exchanger temperature be lower than air dew point.
2. control method according to claim 1, which is characterized in that control in machine First Heat Exchanger dehumidified, interior machine
Second heat exchanger is heated, and the reheat dehumidification system is made to realize heating dehumidifying.
3. control method according to claim 2, which is characterized in that the reheat dehumidification system includes being connected to interior machine the
The first expansion valve of interior machine of one Tube Sheet of Heat Exchanger road and the second expansion valve of interior machine for being connected to interior the second Tube Sheet of Heat Exchanger of machine road,
In, during the reheat dehumidification system realizes heating dehumidifying, the aperture of interior second expansion valve of machine is opened to the maximum.
4. control method according to claim 1, which is characterized in that control in machine First Heat Exchanger dehumidified, interior machine
Second heat exchanger makes the reheat dehumidification system realize cool-down dehumidification without heating.
5. control method according to claim 4, which is characterized in that the reheat dehumidification system includes being connected to interior machine the
The first expansion valve of interior machine of one Tube Sheet of Heat Exchanger road and the second expansion valve of interior machine for being connected to interior the second Tube Sheet of Heat Exchanger of machine road,
In, during the reheat dehumidification system realizes cool-down dehumidification, the aperture of interior second expansion valve of machine is closed to minimum.
6. control method according to claim 1, which is characterized in that control in machine First Heat Exchanger dehumidified, interior machine
Second heat exchanger is intermittently heated, and the reheat dehumidification system is made to realize constant temperature dehumidification.
7. control method according to claim 6, which is characterized in that the reheat dehumidification system includes being connected to interior machine the
The first expansion valve of interior machine of one Tube Sheet of Heat Exchanger road and the second expansion valve of interior machine for being connected to interior the second Tube Sheet of Heat Exchanger of machine road,
In, during the reheat dehumidification system realizes constant temperature dehumidification, the aperture of interior second expansion valve of machine is intermittently opened
Minimum is arrived to maximum and pass.
8. control method according to claim 6, which is characterized in that the second heat exchanger of machine is intermittently made in controlling
The mode of heat includes: to control the second heat exchanger system of interior machine when room temperature the first preset value lower than user set temperature
Heat；When room temperature the second preset value higher than user set temperature, interior the second heat exchanger of machine is controlled without heating.
9. control method according to claim 8, which is characterized in that first preset value is 1~3 DEG C, and/or, institute
Stating the second preset value is 1~3 DEG C.
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| CN201510926313.4A CN105526672B (en) | 2015-12-11 | 2015-12-11 | A kind of reheat dehumidification system temperature/humidity control method |
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| CN114608075A (en) * | 2022-03-21 | 2022-06-10 | 珠海格力电器股份有限公司 | Temperature-adjusting dehumidifying air-conditioning system and control method thereof |
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