CN114562761A - Air conditioner control method and air conditioner - Google Patents
Air conditioner control method and air conditioner Download PDFInfo
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- CN114562761A CN114562761A CN202210157458.2A CN202210157458A CN114562761A CN 114562761 A CN114562761 A CN 114562761A CN 202210157458 A CN202210157458 A CN 202210157458A CN 114562761 A CN114562761 A CN 114562761A
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0087—Indoor units, e.g. fan coil units with humidification means
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner control method and an air conditioner, when the indoor humidity is less than the set humidity, the outlet air temperature of an air return outlet is controlled to be more than the indoor dew point temperature; or/and comparing the indoor humidity with the outdoor humidity; if the indoor humidity is less than the outdoor humidity, the fresh air valve is opened, the fresh air fan is started, the outdoor fresh air is used for humidifying the indoor, the humidifying energy consumption is reduced, the humidifying cost is reduced, and the problem of high humidifying energy consumption in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioner control method and an air conditioner.
Background
For some specific technological scenarios, a low temperature, high humidity, high IAQ (indoor air quality) indoor air environment is required in summer. The processing process of the traditional central air-conditioning terminal system is as follows: the fresh air and the return air are mixed, cooled, dehumidified, heated and rewetted, the moisture content in the fresh air is not fully utilized, and the processes of cooling and heating are carried out simultaneously.
At present, the humidification technology is widely applied to places requiring humidification in various industries. Traditional humidification mode includes isothermal humidification (electric heat humidifier, electrode humidifier, dry steam humidifier etc.) and isenthalpic humidification (spraying humidifier, little fog humidifier, wet film humidifier etc.), all need consume a large amount of electric energy and water resource, and energy-concerving and environment-protective is advocated vigorously along with the country, and the requirement to energy-conservation is higher and higher.
Firstly, an isothermal humidification mode:
the principle is as follows: the method is a mode of directly heating tap water by using alternating current energy to generate clean steam, mixing the steam into air and humidifying the air. Such as electrode humidifier, electric heating humidifier, etc., adopts isothermal humidification mode.
The disadvantages are as follows: large power consumption and water consumption, occupying the space of the box body and needing a steam source.
II, an enthalpy-equaling humidification mode:
the principle is as follows: after the tap water is pressurized mechanically, the pressurized tap water is conveyed to the spray head through a pipeline, high-pressure water is sprayed out from special small holes of the spray nozzle in a rotating mode and atomized in the air, and sprayed water mist particles and the air perform heat and humidity exchange to achieve a humidification mode of humidifying the air with equal enthalpy. Such as a high-pressure spray humidifier, a micro-mist humidifier and the like, adopts an isenthalpic humidification mode.
The disadvantages are as follows: the water-saving water tank has the advantages of large power consumption and water consumption, occupied space of the tank body and water leakage risk.
In summary, the prior art has the following disadvantages:
(1) the technical defects of dehumidification and humidification, cooling and heating and energy waste in the traditional scheme exist at the same time.
(2) The traditional humidification process needs to consume a large amount of electric energy, and electricity is not saved.
(3) The traditional humidification process needs to consume a large amount of water, and water is not saved.
(4) The traditional humidification process needs to occupy a large amount of air conditioner box space and wastes box materials, occupies the effective space of a building and is not environment-friendly.
(5) The traditional humidification process has the risks of water spraying, water leakage and electric leakage, and is unsafe.
Disclosure of Invention
The invention provides an air conditioner control method, which solves the problem of high humidification energy consumption in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
an air conditioner control method, an indoor unit of an air conditioner comprising:
the fresh air duct is provided with a fresh air inlet and a fresh air outlet; an auxiliary humidifier and a fresh air fan are arranged in the fresh air duct; the fresh air inlet is provided with a fresh air valve;
the return air duct is provided with a return air inlet and a return air outlet; a surface cooler and a return fan are arranged in the return air duct;
the control method comprises the following steps: when the indoor humidity is less than the set humidity, executing the following steps:
controlling the outlet air temperature of the return air outlet to be higher than the indoor dew point temperature;
and/or the first and/or second light sources,
comparing the indoor humidity with the outdoor humidity;
if the indoor humidity is less than the outdoor humidity, opening a fresh air valve and opening a fresh air machine;
and if the indoor humidity is more than or equal to the outdoor humidity, starting the fresh air fan and starting the auxiliary humidifier.
Further, when indoor humidity < when setting for humidity, if indoor humidity < outdoor humidity, then open the new blast gate, open new fan, specifically include:
the opening degree of the fresh air valve and the rotating speed of the fresh air fan are increased, and if the opening degree of the fresh air valve is increased to the maximum opening degree and the rotating speed of the fresh air fan is increased to the maximum rotating speed, the indoor humidity is still smaller than the set humidity, and the auxiliary humidifier is started.
Still further, the return air duct is communicated with the fresh air duct through an air mixing valve;
the air mixing valve is positioned between the fresh air inlet and the fresh air outlet; the auxiliary humidifier and the fresh air fan are positioned between the air mixing valve and the fresh air outlet;
the air mixing valve is positioned between the return air inlet and the return air outlet; the surface cooler is positioned between the return air inlet and the air mixing valve; the air return machine is positioned between the air mixing valve and the air return outlet;
the control method further comprises the following steps:
when the indoor humidity is less than the set humidity and the indoor humidity is less than the outdoor humidity, closing the air mixing valve, opening the fresh air valve and opening the fresh air machine;
and when the indoor humidity is less than the set humidity and the indoor humidity is more than or equal to the outdoor humidity, opening the air mixing valve, closing the fresh air valve, opening the fresh air fan and opening the auxiliary humidifier.
Furthermore, the control of the outlet air temperature of the return air outlet > the indoor dew point temperature specifically comprises:
acquiring indoor dew point temperature and target air outlet temperature;
if the target outlet air temperature is larger than or equal to the indoor dew point temperature, controlling the operation of the air conditioner according to the target outlet air temperature;
and if the target outlet air temperature is less than the indoor dew point temperature, taking the indoor dew point temperature as a new target outlet air temperature to control the operation of the air conditioner.
Still further, the control method further includes:
when the indoor humidity is larger than the set humidity, the following steps are executed:
controlling the air outlet temperature of the return air outlet to be less than the indoor dew point temperature;
or/and (c) the first and/or second,
and closing the auxiliary humidifier and the fresh air valve.
Further, close supplementary humidifier and new trend valve when indoor humidity > settlement humidity, specifically include:
when the auxiliary humidifier is in an open state, the humidification quantity of the auxiliary humidifier is gradually reduced, and if the humidification quantity of the auxiliary humidifier is reduced to the lowest humidification quantity and the indoor humidity is still greater than the set humidity, the auxiliary humidifier is turned off; if the indoor humidity is still greater than the set humidity after the auxiliary humidifier is turned off for the first set time, the opening degree of the fresh air valve is reduced, the rotating speed of the fresh air fan is reduced, and if the opening degree of the fresh air valve is reduced to the minimum opening degree and the rotating speed of the fresh air fan is reduced to the minimum rotating speed, the indoor humidity is still greater than the set humidity, and the fresh air valve and the fresh air fan are turned off.
Still further, the control return air outlet's air-out temperature < indoor dew point temperature specifically includes:
acquiring indoor dew point temperature and target air outlet temperature;
if the target outlet air temperature is less than or equal to the indoor dew point temperature, controlling the operation of the air conditioner according to the target outlet air temperature;
and if the target outlet air temperature is larger than the indoor dew point temperature, taking the indoor dew point temperature as a new target outlet air temperature to control the operation of the air conditioner.
Furthermore, the outdoor unit of the air conditioner comprises a compressor, a condenser and an evaporator which form a refrigerant circulation pipeline; the water inlet of the evaporator is connected with the water outlet of the surface air cooler, and the water outlet of the evaporator is connected with the water inlet of the surface air cooler;
the outlet air temperature of the return air outlet is controlled by adjusting the frequency of the compressor or/and the water flow in the surface cooler.
Still further, the outdoor unit of the air conditioner comprises a compressor and a condenser; the compressor, the condenser and the surface cooler form a refrigerant circulating pipeline;
the air outlet temperature of the return air outlet is controlled by adjusting the frequency of the compressor.
The invention provides an air conditioner and a control method of the air conditioner.
Compared with the prior art, the invention has the advantages and positive effects that: according to the air conditioner control method and the air conditioner, when the indoor humidity is less than the set humidity, the outlet air temperature of the return air outlet is controlled to be greater than the indoor dew point temperature; or/and comparing the indoor humidity with the outdoor humidity; if the indoor humidity is less than the outdoor humidity, the fresh air valve is opened, the fresh air fan is started, the outdoor fresh air is used for humidifying the indoor, the humidifying energy consumption is reduced, the humidifying cost is reduced, and the problem of high humidifying energy consumption in the prior art is solved.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of an embodiment of an indoor unit of an air conditioner according to the present invention;
fig. 2 is a flowchart illustrating an embodiment of a method for controlling an air conditioner according to the present invention.
Reference numerals:
10. a fresh air duct; 11. a fresh air inlet; 12. a fresh air outlet; 13. a fresh air filter; 14. an auxiliary humidifier; 15. a fresh air machine; 16. a mixing valve;
20. an air return duct; 21. an air return inlet; 22. an air return outlet; 23. a return air filter; 24. a surface cooler; 25. a return fan;
31. a first housing; 32. a second housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Aiming at the problem of high humidification energy consumption in the prior art, the invention provides an air conditioner control method and an air conditioner. Hereinafter, an air conditioner and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.
The air conditioner of the embodiment comprises an air conditioner indoor unit and an air conditioner outdoor unit, wherein the air conditioner outdoor unit is connected with the air conditioner indoor unit.
An indoor unit of an air conditioner comprises a fresh air duct 10, a return air duct 20, a controller and the like, and is shown in fig. 1.
A fresh air duct 10 having a fresh air inlet 11 and a fresh air outlet 12; the fresh air inlet 11 is communicated with the outdoor space, and the fresh air outlet 12 is communicated with the indoor space; the fresh air inlet 11 is provided with a fresh air valve for opening or closing the fresh air inlet 11. An auxiliary humidifier 14 and a fresh air fan 15 are arranged in the fresh air duct 10.
A return air duct 20 having a return air inlet 21 and a return air outlet 22; the return air inlet 21 is communicated with the indoor space, and the return air outlet 22 is communicated with the indoor space; the return air duct 20 is provided therein with a surface cooler 24 and a return air blower 25.
And the controller controls the operation of the fresh air valve, the auxiliary humidifier 14, the fresh air fan 15 and the air return fan 25. The controller is used for executing the air conditioner control method.
The air conditioner control method of the present embodiment mainly includes the following steps, as shown in fig. 2.
Step S1: and acquiring the indoor humidity.
Step S2: and comparing the indoor humidity with the set humidity, and judging whether the indoor humidity is less than the set humidity.
When the indoor humidity is less than the set humidity, humidification of the indoor is required, step S3 is executed.
Step S3: controlling the outlet air temperature of the return air outlet to be higher than the indoor dew point temperature;
and/or the first and/or second light sources,
comparing the indoor humidity with the outdoor humidity;
if the indoor humidity is less than the outdoor humidity, opening a fresh air valve and starting a fresh air machine;
and if the indoor humidity is more than or equal to the outdoor humidity, starting the fresh air fan and starting the auxiliary humidifier.
In step S3, the outlet air temperature at the return air outlet is controlled to be greater than the indoor dew point temperature in order to prevent the moisture in the indoor air from condensing and prevent the indoor humidity from further decreasing.
In this embodiment, the control of the outlet air temperature of the return air outlet > the indoor dew point temperature specifically includes the following steps:
(31) and acquiring the indoor dew point temperature and the target air outlet temperature of the return air outlet.
(32) If the target outlet air temperature is larger than or equal to the indoor dew point temperature, controlling the operation of the air conditioner according to the target outlet air temperature;
and if the target outlet air temperature is less than the indoor dew point temperature, the indoor dew point temperature is used as a new target outlet air temperature to control the operation of the air conditioner, so that the reduction of the indoor humidity is prevented.
Through the design of (31) - (32), the outlet air temperature of the return air outlet is greater than the indoor dew point temperature, so that the indoor humidity is prevented from being reduced, and the indoor refrigerating and heating requirements are met as much as possible.
In step S3, the indoor humidity and the outdoor humidity are compared; if the indoor humidity is less than the outdoor humidity, the outdoor humidity is high, the fresh air valve is opened, the fresh air fan is started, outdoor fresh air is introduced, the outdoor fresh air is utilized for humidifying the indoor, water and electricity are saved, and the humidifying cost is reduced; if the indoor humidity is larger than or equal to the outdoor humidity, the outdoor humidity is low, the fresh air fan is started, the auxiliary humidifier is used for indoor auxiliary humidification, and the indoor humidification requirement is met.
According to the control method of the air conditioner, when the indoor humidity is less than the set humidity, the outlet air temperature of the return air outlet is controlled to be greater than the indoor dew point temperature; or/and comparing the indoor humidity with the outdoor humidity; if the indoor humidity is less than the outdoor humidity, the fresh air valve is opened, the fresh air fan is started, the outdoor fresh air is used for humidifying the indoor, the humidifying energy consumption is reduced, the humidifying cost is reduced, and the problem of high humidifying energy consumption in the prior art is solved.
In step S3, when the indoor humidity is less than the set humidity, if the indoor humidity is less than the outdoor humidity, the fresh air valve is opened, and the fresh air machine is started, which specifically includes:
the opening degree of the fresh air valve and the rotating speed of the fresh air fan are increased firstly to increase the fresh air quantity, and if the opening degree of the fresh air valve is increased to the maximum opening degree and the rotating speed of the fresh air fan is increased to the maximum rotating speed, the indoor humidity is still less than the set humidity, and the auxiliary humidifier is started. Therefore, when the outdoor fresh air is used for humidification, the fresh air volume is increased at first, and when the fresh air volume reaches the maximum and can not meet the indoor humidification requirement, the auxiliary humidifier is started again to fully utilize the outdoor fresh air, reduce the humidification cost and meet the indoor humidification requirement.
In the present embodiment, the return air duct 20 is communicated with the fresh air duct 10 through the air mixing valve 16; the air mixing valve 16 is positioned between the fresh air inlet 11 and the fresh air outlet 12; the auxiliary humidifier 14 and the fresh air fan 15 are positioned between the air mixing valve 16 and the fresh air outlet 12; the air mixing valve 16 is positioned between the return air inlet 21 and the return air outlet 22; the surface cooler 24 is positioned between the return air inlet 21 and the air mixing valve 16; the return air fan 25 is located between the mixing valve 16 and the return air outlet 22.
In particular, the present invention relates to a method for producing,
the fresh air duct 10 has a first connection port, and the first connection port is located between the fresh air inlet 11 and the fresh air outlet 12; and the auxiliary humidifier 14 and the fresh air fan 15 are located between the first connection port and the fresh air outlet 12.
The return air duct 20 is provided with a second connecting port which is positioned between the return air inlet 21 and the return air outlet 22; and the surface cooler 24 is positioned between the return air inlet 21 and the second connecting port. The return air fan 25 is located between the second connection port and the return air outlet 22.
The first connecting port is connected with the second connecting port, and an air mixing valve 16 is arranged at the first connecting port or the second connecting port. When the air mixing valve 16 is opened, the first connecting port and the second connecting port are communicated, and the fresh air duct 10 and the return air duct 20 are communicated through the first connecting port, the second connecting port and the air mixing valve 16. When the air mixing valve 16 is closed, the fresh air duct 10 is not communicated with the return air duct 20.
A controller which controls the operation of the mixing valve 16.
When the air mixing valve 16 is closed, the first connection port and the second connection port are not communicated, and the fresh air duct 10 and the return air duct 20 are two independent ducts. The fresh air duct 10 is used for exchanging fresh air, humidifying by using the fresh air and bearing the indoor humidity requirement; the return air duct 20 is used for cooling and heating return air and meets the indoor temperature requirement.
When the air mixing valve 16 is opened, the first connecting port is communicated with the second connecting port, the fresh air duct 10 is communicated with the return air duct 20, return air in the return air duct 20 can enter the fresh air duct 10, and the auxiliary humidifier 14 is used for humidifying the return air.
When the fresh air fan 15 is started, outdoor fresh air enters the fresh air duct 10 through the fresh air inlet 11 and enters the room through the fresh air outlet 12.
When the return fan 25 is turned on, indoor air enters the return air duct 20 through the return air inlet 21 and enters the room through the return air outlet 22.
The air conditioner control method of the embodiment further comprises the following steps:
when the indoor humidity is less than the set humidity (namely the indoor environment needs to be humidified) and the indoor humidity is less than the outdoor humidity (indicating that the outdoor humidity is higher), closing the air mixing valve, opening the fresh air valve and opening the fresh air fan; therefore, outdoor fresh air is introduced, and the outdoor fresh air is utilized for indoor humidification, so that water and electricity are saved, humidification energy consumption is reduced, and humidification cost is reduced. Moreover, the fresh air duct 10 and the return air duct 20 are two independent ducts.
When the indoor humidity is less than the set humidity (namely the indoor environment needs to be humidified) and the indoor humidity is more than or equal to the outdoor humidity (indicating that the outdoor humidity is less), the air mixing valve is opened, the fresh air valve is closed, the fresh air fan is opened, and the auxiliary humidifier is opened. At this time, the fresh air duct 10 is communicated with the return air duct 20, indoor return air enters the return air duct 20 through the return air inlet 21, flows through the surface air cooler 24, enters the fresh air duct 10 through the air mixing valve 16, is humidified by the auxiliary humidifier 14 and then enters the indoor space, and the auxiliary humidifier 14 is used for humidifying the indoor return air so as to meet the indoor humidification requirement.
When the indoor humidity is low and humidification is needed, if the outdoor humidity is high, the controller controls the fresh air valve to be opened and the air mixing valve 16 to be closed, the fresh air fan 15 is started, outdoor high-humidity air enters the fresh air duct 10 and then enters the indoor space through the fresh air duct 10, and the outdoor fresh air is used for humidifying the indoor space, so that energy is saved. If the indoor humidification requirement is not met only by means of outdoor fresh air humidification, the auxiliary humidifier 14 is started, and auxiliary humidification is performed through the auxiliary humidifier 14.
When the indoor humidity is low and humidification is needed, if the outdoor humidity is low, the controller controls the fresh air valve to be closed, the air mixing valve 16 to be opened, the fresh air fan 15 to be opened, the auxiliary humidifier 14 to be opened, the indoor return air enters the return air duct 20 through the return air inlet 21, flows through the surface air cooler 24, enters the fresh air duct 10 through the second connecting port, the first connecting port and the air mixing valve 16, is humidified by the auxiliary humidifier 14 and then enters the indoor space, and the auxiliary humidifier 14 is used for indoor humidification.
The air conditioner control method of the embodiment further comprises the following steps.
When the indoor humidity is greater than the set humidity, the indoor is required to be dehumidified, and the following dehumidification step is performed.
And (3) dehumidifying: controlling the air outlet temperature of the return air outlet to be less than the indoor dew point temperature; or/and closing the auxiliary humidifier and the fresh air valve.
The air outlet temperature of the return air outlet is controlled to be less than the indoor dew point temperature, so that water vapor in the indoor air is condensed to reduce the indoor humidity.
In this embodiment, the control of the outlet air temperature of the return air outlet < the indoor dew point temperature specifically includes the following steps:
(41) and acquiring the indoor dew point temperature and the target air outlet temperature of the return air outlet.
(42) If the target outlet air temperature is less than or equal to the indoor dew point temperature, controlling the operation of the air conditioner according to the target outlet air temperature; not only reduces the indoor humidity, but also meets the indoor temperature requirement.
And if the target outlet air temperature is larger than the indoor dew point temperature, taking the indoor dew point temperature as a new target outlet air temperature to control the operation of the air conditioner.
Through the design of (41) to (42), the air outlet temperature of the return air outlet is less than the indoor dew point temperature, so that the indoor humidity is reduced, and the indoor refrigerating and heating requirements are met as much as possible.
In the dehumidification step, close supplementary humidifier and new trend valve when indoor humidity > settlement humidity, specifically include:
when the auxiliary humidifier is in an open state, the humidification quantity of the auxiliary humidifier is gradually reduced, and if the humidification quantity of the auxiliary humidifier is reduced to the lowest humidification quantity and the indoor humidity is still greater than the set humidity, the auxiliary humidifier is turned off; if the indoor humidity is still greater than the set humidity after the auxiliary humidifier is turned off for the first set time, the opening degree of the fresh air valve is reduced, the rotating speed of the fresh air fan is reduced, and if the opening degree of the fresh air valve is reduced to the minimum opening degree and the rotating speed of the fresh air fan is reduced to the minimum rotating speed, the indoor humidity is still greater than the set humidity, and the fresh air valve and the fresh air fan are turned off.
Therefore, when the indoor humidity needs to be reduced, the auxiliary humidifier is closed in priority, then the fresh air valve and the fresh air fan are closed in priority, and the humidification cost is reduced as much as possible on the premise that the indoor humidity requirement is met.
In this embodiment, the auxiliary humidifier is an electro-thermal humidifier. Reducing the amount of humidification of the auxiliary humidifier means reducing the power supply voltage of the auxiliary humidifier.
As a preferable design of this embodiment, the outdoor unit of the air conditioner includes a compressor, a condenser, a throttling device, an evaporator, etc. which form a refrigerant circulation pipeline; the water inlet of the evaporator is connected with the water outlet of the surface cooler of the indoor unit of the air conditioner, and the water outlet of the evaporator is connected with the water inlet of the surface cooler. The temperature of the surface cooler 24 is controlled by adjusting the frequency of the compressor or/and the water flow rate in the surface cooler, and the outlet air temperature of the return air outlet is further controlled. The surface cooler and the evaporator of the air conditioner with the design form a water path circulating pipeline, and water in the surface cooler is used for indoor refrigeration and heating, so that the effect is good.
As another preferable design of this embodiment, the outdoor unit of the air conditioner includes a compressor, a condenser, and a throttle device; the compressor, the condenser, the throttling device and the surface cooler form a refrigerant circulating pipeline. The temperature of the air cooler 24 is controlled by adjusting the frequency of the compressor, and the outlet air temperature of the return air outlet is controlled. The air conditioner of the above design utilizes the refrigerant in the surface air cooler to refrigerate and heat indoors, and has the advantages of simple structure, low cost and convenient realization.
The air conditioner of this embodiment adopts above-mentioned air conditioner control method, utilizes the new trend for indoor humidification, make full use of new trend, and the power saving of economizing on water reduces the humidification energy consumption, reduces the humidification cost, has solved the high problem of humidification energy consumption among the prior art.
In the air conditioner indoor unit of the embodiment, by designing the fresh air duct 10 and the return air duct 20, the fresh air duct 10 has a first connection port, the return air duct 20 has a second connection port, the second connection port is connected with the first connection port, and the air mixing valve 16 is arranged at the first connection port or the second connection port; when the air mixing valve 16 is closed, the fresh air duct 10 and the return air duct 20 are two independent ducts, the fresh air duct 10 is used for exchanging fresh air for the indoor environment and utilizing the fresh air for indoor humidification, the fresh air is fully utilized, water and electricity are saved, the humidification energy consumption is reduced, the humidification cost is reduced, and the problem of high humidification energy consumption in the prior art is solved; the return air duct 20 is used for refrigerating and heating the indoor environment to meet the indoor temperature requirement; when the air mixing valve 16 is opened, the fresh air duct 10 is communicated with the return air duct 20, indoor return air in the return air duct 20 enters the fresh air duct 10, and the indoor return air is humidified by the auxiliary humidifier 14. Therefore, in the air conditioner indoor unit of the present embodiment, by designing the fresh air duct 10 and the return air duct 20, the fresh air duct 10 and the return air duct 20 may be two independent ducts for respectively controlling the humidity and the temperature indoors, or may be communicated through the air mixing valve 16 for jointly controlling the humidity and the temperature indoors; the air conditioner indoor unit of this embodiment, temperature and humidity control is simple and convenient, reduces the humidification energy consumption, reduces the humidification cost, and simple structure, and the space occupies for a short time, and is with low costs, the realization of being convenient for.
In summer, outdoor fresh air is generally utilized to humidify the indoor space, and the auxiliary humidifier 14 is mainly used for standby humidification in winter, so that the humidification requirement of the indoor space in winter is met.
In the present embodiment, the auxiliary humidifier 14 is located between the first connection port and the fresh air blower 15, and the return air blower 25 is located between the second connection port and the return air outlet 22. When the air mixing valve 16 is opened, the fresh air duct 10 is communicated with the return air duct 20, indoor return air enters the return air duct 20 through the return air inlet 21, flows through the surface air cooler 24 and is divided into two paths, wherein one path enters the room through the return air outlet 22 under the action of the return air fan 25; the other path enters the fresh air duct 10 through the second connector, the first connector and the air mixing valve 16 under the action of the fresh air fan 15, is humidified by the auxiliary humidifier 14, and then enters the room through the fresh air outlet 12. By arranging the air return fan 25 between the second connecting port and the air return outlet 22, after the air mixing valve 16 is opened, under the action of the new air fan 15 and the air return fan 25, after air flow in the air return duct 20 passes through the surface air cooler 24, part of the air flow enters the new air duct 10, is humidified by the auxiliary humidifier 14 and then enters a room through the new air outlet 12, and the other part of the air flow is still in the air return duct 20 and does not undergo humidification and directly enters the room through the air return outlet 22; therefore, under the action of the fresh air fan 15 and the return air fan 25, the fresh air outlet 12 sprays humidified air flow, and the return air outlet 22 sprays un-humidified air flow, so that the humidification speed is relieved, the indoor humidity change speed is slowed down, and the comfort of a user is ensured.
In this embodiment, a fresh air filter 13 is disposed at the fresh air inlet 11 for filtering fresh air and ensuring the quality of air entering the room.
In the embodiment, the return air inlet 21 is provided with a return air filter 23 for filtering the return air in the room to ensure the quality of the air in the room.
The fresh air inlet 11 is communicated with the outdoor space, and the humidity at the fresh air inlet 11 is approximately equal to the outdoor humidity. In order to facilitate the detection of outdoor humidity, the fresh air inlet 11 is provided with a first humidity sensor, the first humidity sensor detects a humidity signal at the fresh air inlet 11 and sends the detected humidity signal to the controller.
The return air inlet 21 is communicated with the indoor space, and the humidity at the return air inlet 21 is approximately equal to the indoor humidity. In order to facilitate the detection of indoor humidity, the return air inlet 21 is provided with a second humidity sensor, the second humidity sensor detects a humidity signal at the return air inlet 21 and sends the detected humidity signal to the controller.
The controller controls the operation of the fresh air valve, the air mixing valve 16, the auxiliary humidifier 14, the fresh air fan 15 and the air return fan 25 according to the received humidity signals sent by the first humidity sensor and the second humidity sensor.
The fresh air inlet 11, the fresh air outlet 12, the return air inlet 21 and the return air outlet 22 are respectively provided with a temperature sensor for acquiring temperature signals and sending the acquired temperature signals to the controller, and the controller controls the operation of the fresh air valve, the air mixing valve 16, the auxiliary humidifier 14, the fresh air fan 15 and the return air fan 25 according to the received temperature signals.
As a preferable design of this embodiment, the indoor unit of the air conditioner further includes a first casing 31 and a second casing 32, as shown in fig. 1.
The first casing 31 has a fresh air duct 10 formed therein, and the first casing 31 has a fresh air inlet 11, a first connection port, and a fresh air outlet 12.
The second casing 32 has a return air duct 20 formed therein, and the second casing 32 has a return air inlet 21, a second connection port, and a return air outlet 22.
The first housing 31 is detachably connected to the second housing 32.
Because the first shell 31 and the second shell 32 are detachably connected, the disassembly and the assembly are convenient, and therefore, in the production and manufacturing stage, after the fresh air duct 10 is formed on the first shell 31 and the return air duct 20 is formed on the second shell 32, the first shell 31 and the second shell 32 are installed, and the processing and the manufacturing of the fresh air duct 10 and the return air duct 20 are convenient. Moreover, the maintenance of the fresh air duct 10 and the internal equipment thereof, and the return air duct 20 and the internal equipment thereof is facilitated in the later period.
In this embodiment, the first housing 31 and the second housing 32 are arranged up and down, and the first housing 31 is located above the second housing 32.
A fresh air inlet 11 is formed in one side plate of the first casing 31, a fresh air outlet 12 is formed in the other side plate of the first casing 31, and a first connection port is formed in a bottom plate of the first casing 31.
The return air inlet 21 is formed in one side plate of the second casing 32, the return air outlet 22 is formed in the other side plate of the second casing 32, and the second connection port is formed in the top plate of the second casing 32.
The bottom plate of the first housing 31 contacts the top plate of the second housing 32, and the first connection port is aligned with the second connection port.
In this embodiment, the first housing 31 and the second housing 32 are disposed vertically, the fresh air duct 10 and the return air duct 20 are disposed vertically, the fresh air duct 10 is located above the return air duct 20, and the first connection port and the second connection port are aligned vertically. By designing the fresh air duct 10 and the return air duct 20 to be arranged up and down, the two ducts can be conveniently communicated up and down, the layout is reasonable, and the space occupation of the whole indoor unit is reduced.
In this embodiment, the bottom plate of the first housing 31 is detachably connected to the top plate of the second housing 32 by screws, so as to facilitate assembly and disassembly.
In this embodiment, a seal ring is provided around the periphery of the first connection port, or/and a seal ring is provided around the periphery of the second connection port. When the first connecting port and the second connecting port are aligned and connected up and down, the sealing ring is designed, so that the connection tightness of the first connecting port and the second connecting port can be ensured, air leakage is prevented, and the temperature and humidity in the fresh air duct 10 and the return air duct 20 are ensured.
As another preferable design of this embodiment, the indoor unit of the air conditioner further includes a casing. The interior of the shell is provided with a middle clapboard which divides the interior space of the shell into a fresh air duct 10 and a return air duct 20 from top to bottom;
a fresh air inlet 11 and a fresh air outlet 12 are formed on the shell (above the middle partition plate);
a return air inlet 21 and a return air outlet 22 are formed on the shell (below the middle partition plate);
the middle clapboard is provided with a first connecting port and a second connecting port. Specifically, the middle partition plate is provided with a through hole which is vertically communicated, the upper half part of the through hole is a first connecting port, the lower half part of the through hole is a second connecting port, and the air mixing valve 16 is arranged in the through hole.
The indoor unit of the air conditioner is designed into the shell and the middle partition plate, so that the design of the fresh air duct 10 and the return air duct 20 is facilitated, the two ducts are convenient to communicate up and down, the space occupation of the whole indoor unit is reduced, the layout is reasonable, the structure is simple, and the design is convenient.
In the indoor unit of the air conditioner of this embodiment, the fresh air duct 10 on the upper layer is an independent fresh air humidification functional segment, and is used for bearing the indoor humidity requirement (humidification), and supplying fresh air for humidification of the workshop. The lower return air duct 20 is a return air functional section, and bears indoor cold load to cool and dehumidify the return air. The return air function section for controlling temperature and the fresh air humidifying function section for controlling humidity are integrated, and an independent air channel is adopted for supplying air. When humidification is needed, only the fresh air humidification function is started to humidify the indoor space, and the auxiliary humidifier 14 is not started, so that the purpose of energy conservation is achieved.
The air conditioner indoor unit of the embodiment adopts one unit to realize independent air supply of the fresh air duct and the return air duct at the same time, and the temperature and the humidity are respectively and independently controlled; utilize the big characteristics of new trend moisture content itself, need not to open supplementary humidifier and carry out humidity to the room space and supply, can dilute the concentration such as TVOC in the air simultaneously, satisfy the requirement of room air quality IAQ, solved among the prior art new trend moisture content not make full use of, and by the process through cooling, intensification simultaneously, save the electric energy.
The air conditioner indoor unit of this embodiment utilizes the big characteristics of new trend moisture content, designs independent new trend wind channel and return air wind channel, carries out the new trend humidification, solves humidification power consumption, the water consumption is big, the risk of leaking etc. problem has fundamentally solved traditional humidification mode power consumption, the water consumption is big, occupy the box space big, leak the problem in the aspect of the risk of leaking etc..
The air conditioner indoor unit of the embodiment has the following technical effects:
(1) saves a large amount of electric energy consumption and achieves the aim of energy saving.
(2) Saves a large amount of water source consumption and achieves the aim of saving water.
(3) The air conditioner box saves a large amount of air conditioner box space and box materials, and achieves the purposes of energy conservation and environmental protection.
(4) Adopt the new trend humidification, avoid the risk of traditional humidifier water spray, leak, electric leakage, reach the purpose of safety in production.
(5) Fresh air humidification is adopted, a steam source is not needed, and the purpose of saving initial investment is achieved.
(6) The temperature and the humidity are respectively and independently controlled and are realized by one air conditioning unit, so that the purpose of saving space is achieved.
In a traditional low-temperature and high-humidity application scene, the processes of cooling, dehumidifying, heating and re-humidifying are usually adopted, the temperature and the humidity of the air conditioner indoor unit are independently controlled, the cold load is borne by the air return function section, the humidifying is borne by the fresh air function section, and the indoor space is humidified by fresh air; the fresh air is utilized to supplement humidification quantity, so that dehumidification and humidification as well as temperature reduction and temperature rise are avoided, and the problem of energy waste is solved.
And special technological scenes such as archaeological workshops need low temperature, high humidity, high IAQ and large temperature difference air supply in summer. The air conditioner indoor unit of this embodiment adopts neotype new trend humidification energy-saving technology, utilizes the big characteristics of new trend moisture content itself to utilize the new trend to carry out the humidification, need not to open the humidifier and reaches energy-conserving purpose.
In summer, the compressor and the air return fan are started when the air conditioner operates in a refrigerating mode, and the air conditioner operates in a refrigerating mode to cool the indoor space; and the fresh air valve and the fresh air fan are opened, and humidification or dehumidification is carried out according to the comparison between the indoor humidity and the set humidity.
In summer, when the second humidity sensor detects that the indoor humidity is less than the set humidity and lasts for a certain time:
(1) upper fresh air humidification control function section, new trend wind channel promptly:
the opening degree of a fresh air valve and the rotating speed of a fresh air fan are increased preferentially to increase the fresh air volume, namely humidification is performed preferentially by supplementing fresh air; if the opening of the fresh air valve is increased to the maximum opening, the rotating speed of the fresh air fan is increased to the maximum rotating speed, and after the fresh air valve is continued for a certain time, the indoor actual humidity is still smaller than the set humidity, and auxiliary humidification is performed by opening the auxiliary humidifier.
(2) Lower floor's return air operating mode control function section, return air wind channel promptly:
supplying air according to the temperature above the dew point temperature, namely controlling the outlet air temperature of the return air outlet 22 to be larger than the indoor dew point temperature, comparing the actual indoor temperature with the set temperature, adjusting the return air fan to increase the air supply quantity and simultaneously increasing the chilled water flow of the surface cooler or the load output of the compressor when the actual indoor temperature is larger than the set temperature; when the actual temperature is less than or equal to the set temperature, the air return fan is adjusted to reduce the air supply quantity, and the flow of the chilled water of the surface cooler or the load output of the compressor is reduced.
In summer, when the second humidity sensor detects that the indoor actual humidity is greater than the set humidity and lasts for a certain time:
(1) upper fresh air humidification control function section, new trend wind channel promptly:
when the auxiliary humidifier is in an open state, firstly, the humidification quantity of the auxiliary humidifier is gradually reduced, and if the humidification quantity of the auxiliary humidifier is reduced to the lowest humidification quantity and the indoor actual humidity is still greater than the set humidity, the auxiliary humidifier is shut down; if the auxiliary humidifier is shut down and the indoor actual humidity is still larger than the set humidity after a certain time, the opening of the fresh air valve is reduced, the rotating speed of the fresh air fan is reduced, the fresh air quantity is reduced, if the opening of the fresh air valve is reduced to the minimum opening, and the rotating speed of the fresh air fan is reduced to the minimum rotating speed, the indoor actual humidity is still larger than the set humidity, the fresh air valve and the fresh air fan are closed, and the indoor space is stopped to be humidified by supplementing fresh air.
(2) The lower layer return air working condition control function section is the return air duct:
air is supplied according to the temperature below the dew point temperature, namely the air outlet temperature of the return air outlet 22 is controlled to be less than the indoor dew point temperature, and the indoor air is dehumidified; comparing the detected indoor actual temperature with a set temperature, adjusting the air return fan to increase the air supply quantity and simultaneously increasing the chilled water flow of the surface air cooler or the load output of the compressor when the actual temperature is higher than the set temperature; when the actual temperature is less than or equal to the set temperature, the air return fan is adjusted to reduce the air supply quantity, and the flow of the chilled water of the surface cooler or the load output of the compressor is reduced.
When the indoor humidity is within the range of the set humidity plus or minus precision value and the indoor actual temperature is within the range of the set temperature plus or minus precision value, all the devices such as the fresh air valve, the fresh air fan, the air return fan, the auxiliary humidifier, the compressor and the like keep the current state.
The air conditioner of the embodiment fundamentally solves the problems of low temperature, high humidity and high indoor air quality scene requirements in summer, high energy consumption and water resource waste faced by humidification and the like.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. An air conditioner control method is characterized in that: the indoor unit of the air conditioner includes:
the fresh air duct is provided with a fresh air inlet and a fresh air outlet; an auxiliary humidifier and a fresh air fan are arranged in the fresh air duct; the fresh air inlet is provided with a fresh air valve;
the return air duct is provided with a return air inlet and a return air outlet; a surface cooler and a return fan are arranged in the return air duct;
the control method comprises the following steps: when the indoor humidity is less than the set humidity, executing the following steps:
controlling the outlet air temperature of the return air outlet to be higher than the indoor dew point temperature;
and/or the first and/or second light sources,
comparing the indoor humidity with the outdoor humidity;
if the indoor humidity is less than the outdoor humidity, opening a fresh air valve and starting a fresh air machine;
and if the indoor humidity is more than or equal to the outdoor humidity, starting the fresh air fan and starting the auxiliary humidifier.
2. The control method according to claim 1, characterized in that: when indoor humidity < settlement humidity, if indoor humidity < outdoor humidity, then open the new trend valve, open new trend machine, specifically include:
the opening degree of the fresh air valve and the rotating speed of the fresh air fan are increased, and if the opening degree of the fresh air valve is increased to the maximum opening degree and the rotating speed of the fresh air fan is increased to the maximum rotating speed, the indoor humidity is still smaller than the set humidity, and the auxiliary humidifier is started.
3. The control method according to claim 1, characterized in that: the return air duct is communicated with the fresh air duct through an air mixing valve;
the air mixing valve is positioned between the fresh air inlet and the fresh air outlet; the auxiliary humidifier and the fresh air machine are positioned between the air mixing valve and the fresh air outlet;
the air mixing valve is positioned between the return air inlet and the return air outlet; the surface cooler is positioned between the return air inlet and the air mixing valve; the air return machine is positioned between the air mixing valve and the air return outlet;
the control method further comprises the following steps:
when the indoor humidity is less than the set humidity and the indoor humidity is less than the outdoor humidity, closing the air mixing valve, opening the fresh air valve and opening the fresh air machine;
and when the indoor humidity is less than the set humidity and the indoor humidity is more than or equal to the outdoor humidity, opening the air mixing valve, closing the fresh air valve, opening the fresh air fan and opening the auxiliary humidifier.
4. The control method according to claim 1, characterized in that: the control return air outlet air-out temperature > indoor dew point temperature specifically includes:
acquiring indoor dew point temperature and target air outlet temperature;
if the target outlet air temperature is larger than or equal to the indoor dew point temperature, controlling the operation of the air conditioner according to the target outlet air temperature;
and if the target outlet air temperature is less than the indoor dew point temperature, taking the indoor dew point temperature as a new target outlet air temperature to control the operation of the air conditioner.
5. The control method according to claim 1, characterized in that: the control method further comprises the following steps:
when the indoor humidity is larger than the set humidity, the following steps are executed:
controlling the air outlet temperature of the return air outlet to be less than the indoor dew point temperature;
and/or the first and/or second light sources,
and closing the auxiliary humidifier and the fresh air valve.
6. The control method according to claim 5, characterized in that: close supplementary humidifier and new trend valve when indoor humidity > settlement humidity, specifically include:
when the auxiliary humidifier is in an open state, the humidification quantity of the auxiliary humidifier is gradually reduced, and if the humidification quantity of the auxiliary humidifier is reduced to the lowest humidification quantity and the indoor humidity is still greater than the set humidity, the auxiliary humidifier is turned off; if the indoor humidity is still greater than the set humidity after the auxiliary humidifier is turned off for the first set time, the opening degree of the fresh air valve is reduced, the rotating speed of the fresh air fan is reduced, and if the opening degree of the fresh air valve is reduced to the minimum opening degree and the rotating speed of the fresh air fan is reduced to the minimum rotating speed, the indoor humidity is still greater than the set humidity, and the fresh air valve and the fresh air fan are turned off.
7. The control method according to claim 5, characterized in that: the air-out temperature of control return air export < indoor dew point temperature specifically includes:
acquiring indoor dew point temperature and target air outlet temperature;
if the target outlet air temperature is less than or equal to the indoor dew point temperature, controlling the operation of the air conditioner according to the target outlet air temperature;
and if the target outlet air temperature is larger than the indoor dew point temperature, taking the indoor dew point temperature as a new target outlet air temperature to control the operation of the air conditioner.
8. The control method according to any one of claims 1 to 7, characterized in that: the outdoor unit of the air conditioner comprises a compressor, a condenser and an evaporator which form a refrigerant circulating pipeline; the water inlet of the evaporator is connected with the water outlet of the surface air cooler, and the water outlet of the evaporator is connected with the water inlet of the surface air cooler;
the outlet air temperature of the return air outlet is controlled by adjusting the frequency of the compressor or/and the water flow in the surface cooler.
9. The control method according to claim 1, characterized in that: the outdoor unit of the air conditioner comprises a compressor and a condenser; the compressor, the condenser and the surface cooler form a refrigerant circulating pipeline;
the air outlet temperature of the air return outlet is controlled by adjusting the frequency of the compressor.
10. An air conditioner, characterized in that: the control method according to any one of claims 1 to 9 is employed.
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| CN117329640A (en) * | 2023-12-01 | 2024-01-02 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
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