CN110595005A - Unit control method and device based on heat recovery and heat exchange quantity and air conditioning unit - Google Patents
Unit control method and device based on heat recovery and heat exchange quantity and air conditioning unit Download PDFInfo
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- CN110595005A CN110595005A CN201910936594.XA CN201910936594A CN110595005A CN 110595005 A CN110595005 A CN 110595005A CN 201910936594 A CN201910936594 A CN 201910936594A CN 110595005 A CN110595005 A CN 110595005A
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- fresh air
- temperature
- working condition
- set temperature
- air duct
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Classifications
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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
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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
- F24F11/70—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
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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- 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]
- Y02B30/56—Heat recovery units
Abstract
The invention discloses a unit control method and device based on heat recovery and heat exchange quantity and an air conditioning unit. The air conditioning unit comprises a fresh air duct, a return air duct and a heat recovery device, wherein the heat recovery device comprises a first part arranged in the fresh air duct and a second part arranged in the return air duct, a fresh air valve is arranged on the fresh air duct, and the method comprises the following steps: judging whether the magnitude relation between the set temperature and the indoor actual temperature meets the preset requirement or not; if not, determining the current working condition; and adjusting the opening of the fresh air valve according to the magnitude relation between the set temperature and the indoor actual temperature and the current working condition. The invention utilizes the air flows with different temperatures in the two air channels to continuously evaporate and condense the working medium in the heat recovery device, realizes the heat exchange of the air flows at two sides, reduces the energy consumption of the unit, adjusts the opening of the fresh air valve according to the magnitude relation between the set temperature and the actual temperature and the current working condition, controls the fresh air quantity, thereby controlling the heat exchange quantity of the unit according to the current requirement and further reducing the energy consumption of the unit.
Description
Technical Field
The invention relates to the technical field of units, in particular to a unit control method and device based on heat recovery and heat exchange quantity and an air conditioning unit.
Background
The combined air conditioner unit is one kind of air treating apparatus comprising various air treating functional sections. The unit air treatment functional section mainly includes: filtering, cooling, heating, dehumidifying, humidifying, air-feeding machine, air-returning machine, etc.
The combined air conditioning unit realizes heat exchange to air through each functional section, and achieves the purpose of refrigeration or heating. However, outdoor air is treated one by one through each functional section, and is transmitted and heat exchanged, so that the energy consumption is large.
Aiming at the problem that the combined air conditioning unit in the prior art has large energy consumption, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a unit control method and device based on heat recovery and heat exchange quantity and an air conditioning unit, and aims to solve the problem that a combined air conditioning unit in the prior art is high in energy consumption.
In order to solve the technical problem, an embodiment of the present invention provides an air conditioning unit control method based on heat recovery and heat exchange amount, where the air conditioning unit includes a fresh air duct, a return air duct, and a heat recovery device, the heat recovery device includes a first portion disposed in the fresh air duct and a second portion disposed in the return air duct, and the fresh air duct is provided with a fresh air valve, and the method includes: judging whether the magnitude relation between the set temperature and the indoor actual temperature meets the preset requirement or not; if not, determining the current working condition; and adjusting the opening of the fresh air damper according to the size relation between the set temperature and the indoor actual temperature and the current working condition.
Optionally, according to the set temperature and the magnitude relation of the indoor actual temperature and the current operating mode, adjust the aperture of the fresh air damper, include: if the set temperature is higher than the indoor actual temperature and the current working condition is a refrigeration working condition, opening the opening degree of the fresh air damper; and if the set temperature is greater than the indoor actual temperature and the current working condition is a heating working condition, closing the opening of the fresh air damper.
Optionally, according to the set temperature and the magnitude relation of the indoor actual temperature and the current operating mode, adjust the aperture of the fresh air damper, include: if the set temperature is lower than the indoor actual temperature and the current working condition is a refrigeration working condition, closing the opening of the fresh air damper; if the set temperature is lower than the indoor actual temperature and the current working condition is the heating working condition, the opening degree of the fresh air valve is increased.
Optionally, after adjusting the opening degree of the fresh air damper, the method further includes: acquiring the current indoor actual temperature; judging whether the magnitude relation between the current indoor actual temperature and the set temperature meets the preset requirement or not; if so, keeping the opening of the current fresh air valve to operate until a new set temperature is detected; if not, returning to the step of determining the current working condition and adjusting the opening of the fresh air damper until the size relation between the current indoor actual temperature and the set temperature meets the preset requirement.
Optionally, the preset requirement includes: the set temperature is equal to the indoor actual temperature, or the difference between the set temperature and the indoor actual temperature is smaller than or equal to a preset threshold value.
Optionally, the current operating condition is determined based on at least one of the following factors: medium temperature, indoor temperature and outdoor ambient temperature in the heat exchange coil.
Optionally, the first part of the heat recovery device is located between the filter section of the fresh air duct and the heat exchange coil, and the second part of the heat recovery device is located between the heating section of the return air duct and the exhaust fan section.
Optionally, the fresh air duct and the return air duct are located on the same horizontal plane.
The embodiment of the invention also provides an air conditioning unit control device based on heat recovery and heat exchange quantity, which comprises the following components: the judging module is used for judging whether the magnitude relation between the set temperature and the indoor actual temperature meets the preset requirement or not; the determining module is used for determining the current working condition under the condition that the judging result is negative; and the adjusting module is used for adjusting the opening of the fresh air damper according to the size relation between the set temperature and the indoor actual temperature and the current working condition.
An embodiment of the present invention further provides an air conditioning unit, including: the air conditioning unit comprises a fresh air duct, a return air duct, a heat recovery device and an air conditioning unit control device based on heat recovery and heat exchange quantity, wherein the heat recovery device comprises a first part arranged in the fresh air duct and a second part arranged in the return air duct, and a fresh air valve is arranged on the fresh air duct.
Embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements a method for controlling an air conditioning unit based on heat recovery and heat exchange amount according to any of the embodiments of the present invention.
By applying the technical scheme of the invention, the heat recovery device is arranged in the air conditioning unit, the first part of the heat recovery device is arranged in the fresh air duct, the second part of the heat recovery device is arranged in the return air duct, and the working medium in the heat recovery device is continuously evaporated and condensed by utilizing the air flows with different temperatures in the two air ducts, so that the heat exchange of the air flows at two sides is realized, the energy consumption of the unit is reduced, the opening of the fresh air valve of the air conditioning unit is adjusted according to the magnitude relation between the set temperature and the indoor actual temperature and the current working condition, the fresh air quantity entering the fresh air duct is controlled, the heat exchange quantity of the unit can be controlled according to the current requirement, the refrigeration or heating requirement is rapidly met, and the energy consumption.
Drawings
Fig. 1 is a flowchart of an air conditioning unit control method based on heat recovery and heat exchange amount according to an embodiment of the present invention;
fig. 2 is a schematic top view of a combined air conditioning unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the operation of a wick-type heat pipe according to an embodiment of the present invention;
fig. 4 is a specific flowchart of an air conditioning unit control method based on heat recovery and heat exchange amount according to a second embodiment of the present invention;
fig. 5 is a block diagram of a control device of an air conditioning unit based on heat recovery and heat exchange amount according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The embodiment provides an air conditioning unit control method based on heat recovery and heat exchange quantity, which can be applied to a combined air conditioner. The air conditioning unit comprises a fresh air duct, a return air duct and a heat recovery device, wherein the heat recovery device comprises a first part arranged in the fresh air duct and a second part arranged in the return air duct, and a fresh air valve is arranged on the fresh air duct. The heat recovery device can be realized by the heat pipe to exchange heat among fresh air, return air and working media in the heat pipe.
Fig. 1 is a flowchart of an air conditioning unit control method based on heat recovery and heat exchange amount according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
s101, judging whether the magnitude relation between the set temperature and the indoor actual temperature meets the preset requirement.
Wherein the preset requirements include: the set temperature is equal to the indoor actual temperature, or the difference between the set temperature and the indoor actual temperature is less than or equal to a preset threshold. The preset threshold is an acceptable error, for example 0.2 ℃, although the error can also be expressed in percentage, and is calculated by the following formula: (actual indoor temperature-set temperature)/(set temperature/100%), for example, with an error of 1%.
And S102, if not, determining the current working condition. If yes, the operation is continued according to the original program. The current working condition can be a heating working condition or a cooling working condition.
S103, adjusting the opening of the fresh air damper according to the size relation between the set temperature and the indoor actual temperature and the current working condition. The opening of the fresh air valve is adjusted to control the fresh air quantity entering the fresh air duct, so that the fresh air quantity exchanging heat with the air flow in the return air duct through the heat recovery device in the fresh air duct and the air quantity sent into the room can be adjusted.
The technical scheme of this embodiment, set up heat reclamation device in air conditioning unit, heat reclamation device's first part sets up in the new trend wind channel, the second part sets up in the return air wind channel, utilize the air current of different temperatures in two wind channels to make the working medium among the heat reclamation device constantly evaporate, the condensation, thereby realize the heat exchange of both sides air current, reduce the unit energy consumption, and according to the big or small relation and the current operating mode of setting for temperature and indoor actual temperature, the aperture of the new trend wind valve of adjustment air conditioning unit, the fresh air volume that control got into the new trend wind channel, thereby can be according to the heat transfer volume of current demand control unit, with satisfy refrigeration or heating demand fast, further reduce the unit energy consumption.
In one embodiment, S103 comprises:
if the set temperature is higher than the indoor actual temperature and the current working condition is a refrigeration working condition, opening the opening degree of the fresh air damper;
if the set temperature is higher than the indoor actual temperature and the current working condition is a heating working condition, closing the opening of the fresh air damper;
if the set temperature is lower than the indoor actual temperature and the current working condition is a refrigeration working condition, closing the opening of the fresh air damper;
if the set temperature is lower than the indoor actual temperature and the current working condition is the heating working condition, the opening degree of the fresh air valve is increased.
The set temperature is higher than the actual indoor temperature, which indicates that the indoor temperature value needs to be increased, the outdoor fresh air temperature in summer is high, the fresh air quantity entering the fresh air duct is increased after the opening degree of the fresh air valve is increased, the temperature value after being cooled by the heat exchange coil pipe is quickly increased, and the indoor temperature value can be quickly increased; the temperature of outdoor fresh air in winter is low, the fresh air quantity entering the fresh air duct is reduced after the opening degree of the fresh air valve is reduced, the temperature value after heating through the heat exchange coil pipe can be quickly increased, and the indoor temperature value can be quickly increased.
Similarly, the set temperature is lower than the actual indoor temperature, which indicates that the indoor temperature value needs to be reduced, the outdoor fresh air temperature in summer is high, the fresh air quantity entering the fresh air duct is reduced after the opening of the fresh air damper is closed, the temperature value after being cooled by the heat exchange coil is quickly reduced, and the indoor temperature value is quickly reduced; the temperature of outdoor fresh air in winter is low, after the opening degree of the fresh air valve is increased, the fresh air quantity entering the fresh air duct is increased, the temperature value after heating through the heat exchange coil pipe can be quickly reduced, and the indoor temperature value can be quickly reduced.
Through the adjustment to the aperture of new trend blast gate, the new amount of wind that control got into the new trend wind channel has realized the heat transfer volume according to current demand control unit to satisfy refrigeration or heating demand fast, reduce the unit energy consumption.
Optionally, after the opening of the fresh air damper is adjusted, the method may further include: acquiring the current indoor actual temperature; judging whether the magnitude relation between the current indoor actual temperature and the set temperature meets the preset requirement or not; if so, keeping the opening of the current fresh air valve to operate until a new set temperature is detected; if not, returning to the step of determining the current working condition and adjusting the opening of the fresh air damper until the size relation between the current indoor actual temperature and the set temperature meets the preset requirement.
The actual indoor temperature can be detected by a temperature sensor arranged on the air supply outlet. After the opening degree of the fresh air valve is adjusted, the actual indoor temperature can be monitored and obtained in real time, and whether the indoor temperature meets the requirement or not can be known in time; and the indoor actual temperature can be acquired after the preset time is operated according to the adjusted opening degree, the time for adjusting the temperature according to the adjusted opening degree is reserved for the unit, and the frequent acquisition of the temperature is avoided.
If the relation between the current indoor actual temperature and the set temperature meets the preset requirement, the indoor temperature meets the set temperature required by a user, the opening degree of a fresh air valve does not need to be continuously adjusted, the operation of the current opening degree of the air valve is kept, and when the new set temperature is received, the steps of comparing the temperature, determining the working condition and adjusting the air valve are repeated, so that the refrigerating or heating requirement is met as soon as possible by adjusting the heat exchange quantity, and the energy consumption of a unit is reduced.
Alternatively, the current operating condition may be determined based on at least one of the following factors: medium temperature, indoor temperature and outdoor ambient temperature in the heat exchange coil.
The heat exchange coil exchanges heat with air outside the coil by using a medium (a medium capable of realizing heat exchange, such as hot water, cold water or other media) flowing in the coil to heat the air or cool the air. For example, if hot water flows through the heat exchange coil, the current working condition is determined as a heating working condition, and if cold water flows through the heat exchange coil, the current working condition is determined as a cooling working condition. Specifically, a temperature sensing device, such as a temperature sensing bulb, may be disposed at the heat exchanging coil to detect the temperature of the medium in the heat exchanging coil.
The outdoor environment temperature can be detected by a temperature sensor of the fresh air inlet, and can also be obtained by acquiring weather information through a network. If the outdoor environment temperature is higher than the first temperature threshold value, for example, 30 ℃, the current working condition is determined as a cooling working condition, and if the outdoor environment temperature is lower than the second temperature threshold value, for example, 5 ℃, the current working condition is determined as a heating working condition.
In order to improve accuracy, the current working condition can be determined by combining the set temperature and the outdoor environment temperature, if the set temperature is lower than the outdoor environment temperature, the current working condition is determined to be a refrigerating working condition, and if the set temperature is higher than the outdoor environment temperature, the current working condition is determined to be a heating working condition.
The indoor temperature can be detected by a temperature sensor of the air supply outlet. And if the indoor temperature is higher than the set temperature, determining that the current working condition is a refrigerating working condition, and if the indoor temperature is lower than the set temperature, determining that the current working condition is a heating working condition.
In addition, the parameters can be used for determining the current working condition at the same time, so that the accuracy of determining the working condition is further ensured. If the determination results are inconsistent, the determination can be performed again, or the determination result of the parameter with high priority can be used as the standard according to the priority of the parameter.
In an alternative embodiment, the first portion of the heat recovery device is located between the filter section of the fresh air duct and the heat exchange coil. The filtered fresh air exchanges heat with working media in the heat recovery device, and the fresh air exchanges heat through the heat exchange coil after being preliminarily heated or cooled, so that the energy consumption of the unit is reduced. The second part of the heat recovery device is positioned between the heating section of the return air duct and the exhaust fan section. The return air exchanges heat with the working medium in the heat recovery device, and the state of the working medium is changed by utilizing the return air so as to be used for heat exchange at the fresh air side. It should be noted that, the maintenance section can be added at a proper position in the unit according to the requirement.
Optionally, the fresh air duct and the return air duct are located on the same horizontal plane, and therefore the heat recovery device arranged in the two air ducts can smoothly realize state change and transmission of working media under air flows with different temperatures in the two air ducts, heat recovery is realized, and energy consumption is reduced.
The air conditioning unit in this embodiment carries out heat recovery through heat recovery unit, utilizes heat recovery unit tentatively to the air current that gets into cool down or heat up the back, carries out the heat transfer through subsequent heat exchange coil again to can fully reduce the energy consumption of heat exchange coil heat transfer. For example, fresh air at 35 ℃ needs to reach 14 ℃ after being cooled by the coil, if the fresh air is directly cooled, the power consumed by the coil is P1, if the fresh air is directly cooled, the temperature of the fresh air is reduced to 25 ℃ from 35 ℃, and then the temperature of the fresh air is reduced to 14 ℃ through the coil, and at the moment, the power consumed by the coil is P2, and P2 is less than P1.
Fig. 2 is a schematic top view of the combined air conditioning unit. The combined air conditioning unit comprises: the heat exchanger comprises a fresh air section, an air return section, a primary-intermediate effect filtering section, an active carbon filtering section, a heat pipe heat recovery section, a heat exchange coil section, a hot water heating section, an air feeder section, an exhaust fan section and a plurality of overhauling sections. The combined air conditioning unit comprises: the heat pipe heat recovery section penetrates through the partition board and is divided into two parts, namely 103 and 205, which are respectively arranged in the fresh air duct and the return air duct for realizing the heat recovery of fresh air and the heat recovery of return air. Fresh air duct 100 includes in order: the system comprises a fresh air section 101, a primary and intermediate effect filtering section 102, a first part 103 of a heat pipe heat recovery section, an overhaul section 104, a heat exchange coil section 105, an overhaul section 106 and a blower section 107. The return air duct 200 includes in order: an air return section 201, an activated carbon filter section 202, a hot water heating section 203, a service section 204, a second part 205 of a heat pipe heat recovery section, a service section 206 and an exhaust fan section 207. The positions of the return air inlet and the fresh air inlet can be respectively provided with a proportional air valve. The air supply outlet and the air outlet can be respectively provided with a temperature and humidity sensor to detect the temperature and humidity of the air supply outlet and the temperature and humidity of the air outlet.
The heat recovery device can be a wick-absorbing heat pipe, can exchange heat without an external driving part, and is convenient to maintain and replace. In particular, the heat recovery means may comprise a plurality of heat pipes of the same type.
The working principle of the wick type heat pipe is shown in fig. 3, and the heat pipe comprises a pipe shell 10, a wick 20 and working media (liquid working medium M and gaseous working medium N) in the pipe shell. In the evaporation section 11, the temperature of the air flow outside the heat pipe is high, the liquid working medium M in the heat pipe exchanges heat with the air flow, the liquid working medium M is evaporated to be changed into a gaseous working medium N, and the process absorbs heat Q; gaseous working medium N passes through heat insulation section 12 and gets into condensation segment 13, and at condensation segment 13, the air current temperature in the heat pipe outside is low, and gaseous working medium N in the heat pipe carries out the heat exchange with this air current, and gaseous working medium N condenses and becomes liquid working medium M, and this process gives off heat Q.
The combined air conditioning unit comprises a wind supply side and a wind return side, and the air flow temperatures of the two sides are different, for example, the air flow temperature of the fresh wind side is high in summer and the air flow temperature of the wind return side is low; the temperature of the air flow at the fresh air side is low in winter, and the temperature of the air flow at the return air side is high. The heat recovery device is arranged across the two air channels, and working media in the heat recovery device are continuously evaporated and then condensed through the difference of the temperatures of the air flows on the two sides, and the circulation is carried out so as to achieve the purpose of carrying out heat exchange on the air on the two sides. The fresh air side is evaporated in summer, and the return air side is condensed; the fresh air side condenses in winter, and the return air side evaporates.
The heat exchange principle of the unit is as follows:
(1) summer refrigeration working condition
The hot fresh air outside the fresh air side room enters the unit, is firstly filtered through the primary middle effect filtering section, and then passes through the heat pipe heat recovery section, so that the liquid working medium in the fresh air side heat pipe is heated and evaporated after passing through a cold and hot air flow interface (namely, interfaces of two air channels) to become a gaseous state, the gaseous working medium enters the condensation side under the action of pressure difference, after the heat exchange between the fresh air flow and the liquid working medium, the temperature of the fresh air flow is reduced, then the fresh air flow is further cooled and dehumidified through the heat exchange coil pipe, and finally the fresh air flow is sent into the. The air return that the indoor temperature of return air side is lower gets into the unit after, filters through the active carbon filter segment, and the hot water heating section does not start in the refrigeration operating mode in summer, and the air passes through heat pipe heat recovery section, and the gaseous state working medium that evaporates from the new trend side carries out the heat transfer with the return air that the temperature is lower, and the condensation becomes the liquid, and liquid working medium flows back through the imbibition core, and the return air after carrying out the heat exchange passes through the exhaust fan and discharges. The above steps are repeated to achieve the purposes of fresh return air heat recovery and refrigeration.
(2) Heating working condition in winter.
Fresh air with lower outdoor temperature enters the heat pipe heat recovery section after being filtered, and exchanges heat with gaseous working media, the gaseous working media in the heat pipe are condensed into liquid after releasing heat and then flow back, the temperature of the fresh air flow rises after absorbing heat, the fresh air flow is further heated and heated through the heat exchange coil pipe, and finally the fresh air flow is sent into a room through the air feeder. After the return air with slightly high temperature at the return air side is filtered, in order to ensure that the liquid working medium in the heat pipe can be smoothly evaporated, the heat pipe needs to be further heated by a hot water heating section, and then the liquid working medium flowing back from the fresh air side is evaporated to a heat recovery section of the heat pipe, so that the internal energy of the heat pipe can be balanced and finally the liquid working medium is discharged by an exhaust fan. The above steps are repeated to achieve the purposes of recovering and heating the fresh return air heat.
Therefore, in summer, the hot air flow firstly passes through the heat pipe to reduce the temperature and then passes through the heat exchange coil to exchange heat, and the power consumed by the heat exchange coil is reduced. In winter, the cold air flow firstly passes through the heat pipe to raise the temperature and then passes through the heat exchange coil to exchange heat, and the power consumed by the heat exchange coil is reduced. Compared with the mode of directly carrying out heat exchange through the heat exchange coil, the energy consumption of heat exchange of the heat exchange coil can be fully reduced.
Example two
The present embodiment describes the above air conditioning unit control method with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application, and is not to be construed as a limitation to the present application. The same or corresponding terms as those of the above-described embodiments are explained, and the description of the present embodiment is omitted.
Referring to fig. 4, it is determined whether the magnitude relationship between the set temperature and the indoor actual temperature meets a preset requirement, i.e., whether the two are approximately equal to each other. If yes, executing according to the original program. If the set temperature is greater than the indoor actual temperature, judging whether the set temperature is a summer refrigeration working condition, if the set temperature is the refrigeration working condition, opening the opening of the fresh air valve, if the set temperature is not the summer refrigeration working condition, namely a winter heating working condition, closing the opening of the fresh air valve, judging whether the set temperature is approximately equal to the set temperature through indoor temperature data fed back by a temperature and humidity sensor on the air supply side, if the set temperature is not the summer refrigeration working condition, keeping the current parameter (namely the opening of the fresh air valve) to work until the next new set temperature appears, if the set temperature is not the winter heating working condition, returning to continuously judge the size of the set temperature and the indoor actual temperature, and then operating the corresponding program until the set temperature and the indoor actual temperature.
If the set temperature is lower than the indoor actual temperature, whether the set temperature is a summer refrigeration working condition or a winter heating working condition is judged, the opening degree of the fresh air valve is reduced under the summer refrigeration working condition, the opening degree of the fresh air valve is increased under the winter heating working condition, the set temperature and the indoor actual temperature are judged again, and the current opening degree of the fresh air valve is kept to operate until the set temperature is equal to the indoor actual temperature or the deviation is less than 1 percent.
According to the size relation and the current operating mode of setting for temperature and indoor actual temperature, the aperture of the new trend blast gate of adjustment air conditioning unit controls the fresh air volume that gets into the new trend wind channel to can be according to the heat transfer volume of current demand control unit, with satisfy refrigeration or heating demand fast, reduce the unit energy consumption.
EXAMPLE III
Based on the same inventive concept, the embodiment provides an air conditioning unit control device based on heat recovery and heat exchange amount, which can be used for implementing the air conditioning unit control method based on heat recovery and heat exchange amount described in the above embodiment. The device can be implemented by software and/or hardware, and can be generally integrated into a combined air conditioning unit.
Fig. 5 is a block diagram of a control apparatus of an air conditioning unit based on heat recovery and heat exchange amount according to a third embodiment of the present invention, as shown in fig. 5, the apparatus includes:
the judging module 51 is configured to judge whether a magnitude relationship between the set temperature and the indoor actual temperature meets a preset requirement;
the determining module 52 is configured to determine the current working condition if the determination result is negative;
and the adjusting module 53 is used for adjusting the opening of the fresh air damper according to the size relationship between the set temperature and the indoor actual temperature and the current working condition.
Optionally, the adjusting module 53 is specifically configured to: if the set temperature is higher than the indoor actual temperature and the current working condition is a summer refrigeration working condition, opening the opening degree of the fresh air damper; and if the set temperature is greater than the indoor actual temperature and the current working condition is the winter heating working condition, closing the opening of the fresh air damper.
Optionally, the adjusting module 53 is specifically configured to: if the set temperature is lower than the indoor actual temperature and the current working condition is a summer refrigeration working condition, closing the opening of the fresh air damper; and if the set temperature is lower than the indoor actual temperature and the current working condition is the winter heating working condition, opening the opening degree of the fresh air damper.
Optionally, the apparatus may further include: the processing module is used for acquiring the current indoor actual temperature after the opening of the fresh air valve is adjusted; judging whether the magnitude relation between the current indoor actual temperature and the set temperature meets the preset requirement or not; if so, keeping the opening of the current fresh air valve to operate until a new set temperature is detected; if not, returning to the step of determining the current working condition and adjusting the opening of the fresh air damper until the size relation between the current indoor actual temperature and the set temperature meets the preset requirement.
Optionally, the preset requirement includes: the set temperature is equal to the indoor actual temperature, or the difference between the set temperature and the indoor actual temperature is smaller than or equal to a preset threshold value.
Optionally, the determining module 52 is specifically configured to: determining the current operating condition based on at least one of: medium temperature, indoor temperature and outdoor ambient temperature in the heat exchange coil.
The device can execute the method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
This embodiment still provides an air conditioning unit, includes: the air conditioning unit comprises a fresh air duct, a return air duct, a heat recovery device and the air conditioning unit control device based on heat recovery and heat exchange quantity, wherein the heat recovery device comprises a first part arranged in the fresh air duct and a second part arranged in the return air duct, and a fresh air valve is arranged on the fresh air duct.
Optionally, the first part of the heat recovery device is located between the filtering section of the fresh air duct and the heat exchange coil, and the second part of the heat recovery device is located between the heating section of the return air duct and the exhaust fan section.
Optionally, the fresh air duct and the return air duct are located at the same horizontal plane.
The present embodiment also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a heat recovery and heat exchange amount based air conditioning unit control method according to any of the embodiments of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. The control method of the air conditioning unit is characterized in that the air conditioning unit comprises a fresh air duct, a return air duct and a heat recovery device, the heat recovery device comprises a first part arranged in the fresh air duct and a second part arranged in the return air duct, and a fresh air valve is arranged on the fresh air duct;
the method comprises the following steps:
judging whether the magnitude relation between the set temperature and the indoor actual temperature meets the preset requirement or not;
if not, determining the current working condition;
and adjusting the opening of the fresh air damper according to the size relation between the set temperature and the indoor actual temperature and the current working condition.
2. The method according to claim 1, wherein adjusting the opening degree of the fresh air damper according to the magnitude relation between the set temperature and the indoor actual temperature and the current working condition comprises:
if the set temperature is higher than the indoor actual temperature and the current working condition is a refrigeration working condition, opening the opening degree of the fresh air damper;
and if the set temperature is greater than the indoor actual temperature and the current working condition is a heating working condition, closing the opening of the fresh air damper.
3. The method according to claim 1, wherein adjusting the opening degree of the fresh air damper according to the magnitude relation between the set temperature and the indoor actual temperature and the current working condition comprises:
if the set temperature is lower than the indoor actual temperature and the current working condition is a refrigeration working condition, closing the opening of the fresh air damper;
if the set temperature is lower than the indoor actual temperature and the current working condition is the heating working condition, the opening degree of the fresh air valve is increased.
4. The method of claim 1, further comprising, after adjusting the opening of the fresh air damper:
acquiring the current indoor actual temperature;
judging whether the magnitude relation between the current indoor actual temperature and the set temperature meets the preset requirement or not;
if so, keeping the opening of the current fresh air valve to operate until a new set temperature is detected;
if not, returning to the step of determining the current working condition and adjusting the opening of the fresh air damper until the size relation between the current indoor actual temperature and the set temperature meets the preset requirement.
5. The method of claim 1, wherein the preset requirements comprise: the set temperature is equal to the indoor actual temperature, or the difference between the set temperature and the indoor actual temperature is smaller than or equal to a preset threshold value.
6. The method of claim 1, wherein the current operating condition is determined based on at least one of: medium temperature, indoor temperature and outdoor ambient temperature in the heat exchange coil.
7. The method of any one of claims 1 to 6, wherein a first portion of the heat recovery device is located between the filter section of the fresh air duct and the heat exchange coil, and a second portion of the heat recovery device is located between the heating section of the return air duct and the exhaust fan section.
8. The method of any one of claims 1 to 6, wherein the fresh air duct and the return air duct are at the same level.
9. An air conditioning unit control apparatus characterized by comprising:
the judging module is used for judging whether the magnitude relation between the set temperature and the indoor actual temperature meets the preset requirement or not;
the determining module is used for determining the current working condition under the condition that the judging result is negative;
and the adjusting module is used for adjusting the opening of the fresh air damper according to the size relation between the set temperature and the indoor actual temperature and the current working condition.
10. An air conditioning assembly, comprising: the air conditioning unit control device of claim 9, wherein the heat recovery device comprises a first portion disposed in the fresh air duct and a second portion disposed in the return air duct, and the fresh air duct is provided with a fresh air valve.
11. A computer-readable storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the air conditioning unit control method according to any one of claims 1 to 8.
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| CN201910936594.XA CN110595005A (en) | 2019-09-29 | 2019-09-29 | Unit control method and device based on heat recovery and heat exchange quantity and air conditioning unit |
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| CN201910936594.XA CN110595005A (en) | 2019-09-29 | 2019-09-29 | Unit control method and device based on heat recovery and heat exchange quantity and air conditioning unit |
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Application publication date: 20191220 |