CN111237876A - Fresh air conditioner and comfortable air supply control method thereof - Google Patents
Fresh air conditioner and comfortable air supply control method thereof Download PDFInfo
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- CN111237876A CN111237876A CN202010055799.XA CN202010055799A CN111237876A CN 111237876 A CN111237876 A CN 111237876A CN 202010055799 A CN202010055799 A CN 202010055799A CN 111237876 A CN111237876 A CN 111237876A
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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
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
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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
- F24F11/0001—Control or safety arrangements for ventilation
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
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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
- F24F2110/10—Temperature
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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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a fresh air conditioner and a comfortable air supply control method thereof, wherein the comfortable air supply control method comprises the following steps: receiving an operation instruction of a fresh air mode, and starting the fresh air mode; detecting indoor ambient temperature and outdoor ambient temperature; judging whether the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature is greater than or equal to a first preset temperature or not; if so, the air conditioning mode is automatically started to exchange heat for the indoor air, so that the heat-exchanged indoor air and the outdoor fresh air are mixed and then flow into the room. According to the invention, the air conditioner mode is automatically started to exchange heat for indoor air under the condition of large indoor and outdoor temperature difference, and the indoor air subjected to heat exchange by the heat exchanger can be mixed with the introduced outdoor fresh air, so that the phenomenon that the indoor temperature is too cold or too hot due to the introduced outdoor fresh air is avoided, and the comfort level of a human body is improved; the outdoor fresh air is not required to be additionally provided with an additional heat exchanger for heat exchange, and the device is good in universality and easy to realize.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fresh air conditioner and a comfortable air supply control method thereof.
Background
The air conditioner needs the airtight indoor environment when using, because long-time not ventilate can lead to indoor carbon dioxide concentration too high, the new trend air conditioner arises in due charge, the new trend air conditioner is usually at the indoor set installation new trend module of air conditioner, this new trend module and outdoor intercommunication to inhale the new trend wind channel of new trend module with outdoor air and discharge to indoor, in order to improve the indoor air quality.
In summer or winter, under the condition that the temperature difference between the indoor and the outdoor is large, the fresh air conditioner directly introduces outdoor air into the room, so that the local air temperature difference is too large, human body discomfort is easily caused, and the overall working efficiency of the air conditioner is also influenced. In the prior art, a heat exchanger is additionally arranged in a fresh air duct of a fresh air module to adjust the temperature of outdoor air, but the technical scheme increases the production cost, so that the arrangement of a refrigerant pipeline is more complex and is difficult to realize, and the control method is more complex.
Disclosure of Invention
The invention solves the problem that the temperature difference of indoor air is large and human body is uncomfortable due to the introduction of fresh air into a fresh air conditioner in the prior art.
In order to solve the above problems, a first aspect of the present invention provides a comfortable air supply control method for a fresh air conditioner, where the fresh air conditioner includes an air conditioning mode and a fresh air mode, the air conditioning mode is used for indoor air heat exchange circulation, and the fresh air mode is used for introducing outdoor fresh air into a room;
the comfortable air supply control method comprises the following steps:
receiving an operation instruction of a fresh air mode, and starting the fresh air mode;
detecting indoor ambient temperature and outdoor ambient temperature;
judging whether the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature is greater than or equal to a first preset temperature or not;
if so, automatically starting the air conditioning mode to exchange heat for indoor air, so that the heat-exchanged indoor air and the outdoor fresh air are mixed and then flow into the room.
After the method is adopted, compared with the prior art, the method has the following advantages: according to the invention, the air conditioner mode is automatically started to exchange heat for indoor air under the condition of large indoor and outdoor temperature difference, and the indoor air subjected to heat exchange by the heat exchanger can be mixed with the introduced outdoor fresh air, so that the phenomenon that the indoor temperature is too cold or too hot due to the introduced outdoor fresh air is avoided, and the comfort level of a human body is improved; the outdoor fresh air is not required to be additionally provided with an additional heat exchanger for heat exchange, and the device is good in universality and easy to realize.
Furthermore, the fresh air conditioner comprises an indoor air channel assembly and a fresh air channel assembly, the indoor air channel assembly comprises an indoor wind wheel, and the fresh air channel assembly comprises a fresh air wind wheel; the comfortable air supply control method also comprises the step of adjusting the rotating speed ratio of the indoor wind wheel and the fresh air wind wheel according to the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature.
According to the technical scheme of this embodiment, can realize according to the rotation ratio of indoor fan and the new trend fan of indoor outer temperature difference stage nature adjustment, reduce outdoor new trend to the influence of indoor temperature high-efficiently.
Further, when the absolute value | Δ T | of the temperature difference between the indoor ambient temperature and the outdoor ambient temperature satisfies:
when the delta T is greater than the second preset temperature, the range of the rotating speed ratio of the indoor fan to the fresh air fan is 1.5-2;
when the first preset temperature is less than or equal to | delta T | < the second preset temperature, the range of the rotation speed ratio of the indoor fan to the fresh air fan is 1-1.5, wherein the first preset temperature is less than the second preset temperature.
According to the technical scheme of the embodiment, when the indoor and outdoor temperature difference is extremely large, the rotating speed of the indoor fan is far greater than that of the fresh air fan; when the indoor and outdoor temperature difference is large, the rotating speed of the indoor fan is slightly larger than that of the fresh air fan.
Further, the first preset temperature is 3-5 ℃, and the second preset temperature is 6-8 ℃.
According to the technical scheme of the embodiment, the second preset temperature is slightly larger than the first preset temperature, and the temperature division range is reasonable.
Further, detecting the indoor environment temperature and the outdoor environment temperature according to a preset time interval, and controlling the air-conditioning mode to be closed when the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature is less than the first preset temperature.
According to the technical scheme of the embodiment, when the indoor and outdoor temperature difference is small, the air conditioning mode is closed, and the purpose of directly introducing fresh air without causing discomfort to a human body is achieved.
Further, the step of starting the air conditioning mode to exchange heat with indoor air includes: acquiring the set temperature of the fresh air conditioner, periodically detecting the difference value between the indoor environment temperature and the set temperature, and controlling the closing of the air conditioning mode according to the difference value between the indoor environment temperature and the set temperature.
According to the technical scheme of the embodiment, the set temperature is introduced, and the comfort of the indoor environment is ensured.
Further, when the air-conditioning mode is a refrigeration mode, judging whether the indoor environment temperature is less than or equal to the set temperature of the fresh air conditioner, and if so, closing the air-conditioning mode;
or when the air-conditioning mode is the heating mode, judging whether the indoor environment temperature is more than or equal to the set temperature of the fresh air conditioner, and if so, closing the air-conditioning mode.
According to the technical scheme of the embodiment, when the outdoor environment temperature changes violently, sudden drop or sudden rise of the indoor temperature after reaching the set temperature can be avoided, and the comfort of the indoor environment is ensured.
The invention provides a fresh air conditioner in a second aspect, and the fresh air conditioner applies the comfortable air supply control method.
Furthermore, the fresh air conditioner comprises an indoor air duct, a fresh air duct and a fresh air outlet arranged on the shell; a first fresh air duct and a second fresh air duct are arranged in the fresh air duct, and a first air inlet of the first fresh air duct can be communicated with the indoor air duct to guide indoor air to the fresh air outlet; the second fresh air duct is used for guiding outdoor fresh air to the fresh air outlet.
According to the technical scheme of this embodiment, the mixing of indoor wind and outdoor new trend has been realized through the setting in first new trend wind channel and second new trend wind channel.
The first fresh air duct is positioned above the second fresh air duct, the first fresh air duct is provided with a first air outlet, the second fresh air duct is provided with a second air outlet, and openings of the first air outlet and the second fresh air outlet face a fresh air outlet on the shell; the distance between the first air outlet and the fresh air outlet is 5-10 cm.
According to the technical scheme of the embodiment, indoor air blown out from the first air outlet and outdoor fresh air blown out from the second air outlet can be fully mixed in the fresh air duct and then blown out from the fresh air outlet.
Drawings
FIG. 1 is a flow chart of a comfort supply control method of the present invention;
FIG. 2 is a schematic diagram of an explosion structure of an indoor unit of a fresh air conditioner according to an embodiment of the present invention;
FIG. 3 is an exploded view of a fresh air duct assembly according to an embodiment of the present disclosure;
FIG. 4 is a front view of a front panel and a back panel of an indoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 5 is a front view of an indoor unit of an air conditioner in a single outdoor fresh air state according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of an indoor unit of an air conditioner in a single outdoor fresh air state according to an embodiment of the present invention;
FIG. 7 is a front view of an indoor unit of an air conditioner in a state of mixing fresh air according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of an indoor unit of an air conditioner in a state of mixing fresh air according to an embodiment of the present invention;
10-fresh air duct; 11-fresh air inlet; 12-air outlet by fresh air; 20-indoor air duct; 21-indoor air inlet; 22-indoor air outlet; 100-a fresh air duct assembly; 110-a first sub-volute; 111-a first air inlet; 112-a second air inlet; 120-a second sub-volute; 130-a third sub-volute; 131-a second air inlet; 132-a second air outlet; 140-a first fresh air impeller; 150-a second fresh air impeller; 160-a first flow guide; 170-a second flow guide; 180-motor; 200-an indoor air duct assembly; 300-a heat exchanger; 400-a front panel; 410-a cover plate; 500-back boarding; 600-chassis.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Under the condition that the indoor environment temperature and the outdoor environment temperature have the temperature difference, the fluctuation of the indoor temperature can be caused by directly introducing outdoor fresh air by using the fresh air conditioner, and on the premise of reducing the influence of the introduced outdoor fresh air on the indoor environment temperature, the fresh air is replaced indoors, so that the user can achieve the best comfortable experience.
The fresh air conditioner comprises an air conditioning mode and a fresh air mode, wherein the air conditioning mode is used for heat exchange circulation of indoor air, and the fresh air mode is used for introducing outdoor fresh air into a room.
The first embodiment is as follows:
fig. 1 is a flow chart of a comfortable blowing control method according to the present invention. The fresh air conditioner firstly receives an operation instruction, wherein the operation instruction comprises an operation instruction of an air conditioner mode, an operation instruction of a fresh air mode and an instruction of simultaneous operation of the fresh air mode and the air conditioner mode: only starting the air-conditioning mode when receiving an operation instruction for operating the air-conditioning mode; when receiving an instruction that the fresh air mode and the air conditioning mode operate simultaneously, starting the fresh air mode and the air conditioning mode simultaneously, but not entering the comfortable air supply control method; when only receiving the instruction of operating the fresh air mode, entering the comfortable air supply control method;
specifically, the comfortable air supply control method of the fresh air conditioner comprises the following steps:
firstly, when receiving an operation instruction of an operation fresh air mode, starting the fresh air mode and introducing outdoor fresh air into a room;
secondly, detecting the indoor environment temperature and the outdoor environment temperature;
thirdly, judging whether the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature is greater than or equal to a first preset temperature or not;
if the absolute delta T is more than or equal to a first preset temperature, automatically starting the air conditioning mode to exchange heat for indoor air, and enabling the indoor air subjected to heat exchange to be mixed with the outdoor fresh air and then flow into the room; this is because if | Δ T | ≧ the first preset temperature, this indicates that the temperature difference between the indoor and outdoor is large, including two cases: firstly, it is outdoor hotter, it is indoor colder, outdoor ambient temperature is greater than first temperature of predetermineeing with indoor ambient temperature's difference, another kind is outdoor colder, it is indoor hotter, indoor ambient temperature is greater than first temperature of predetermineeing with outdoor ambient temperature's difference, at this moment, can cause indoor local temperature to take place great change if directly introduce outdoor new trend, influence human comfort level, therefore, it mixes formation mixed wind with outdoor new trend to open the indoor wind that air conditioning mode made after the heat transfer through automatic, make the temperature of mixed wind suitable, get into indoor back and do not influence human comfort level.
If the absolute value delta T is less than the first preset temperature, the indoor and outdoor temperature difference is small, at the moment, the air conditioning mode is not started, and the reason that outdoor fresh air is directly introduced under the condition that the indoor and outdoor temperature difference is small, fluctuation of indoor environment temperature is small, and the comfort level of a human body is not influenced is solved.
In the invention, the air conditioner mode is automatically started to exchange heat for the indoor air under the condition of large indoor and outdoor temperature difference, so that the indoor air subjected to heat exchange by the heat exchanger can be fully mixed with the introduced outdoor fresh air, the supercooling or overheating of the indoor temperature caused by the introduced outdoor fresh air is avoided, and the comfort level of a human body is further improved.
Preferably, the fresh air conditioner comprises an indoor air duct assembly and a fresh air duct assembly, the indoor air duct assembly comprises an indoor wind wheel, and the fresh air duct assembly comprises a fresh air wind wheel; the comfortable air supply control method also comprises the step of adjusting the rotation speed ratio of the indoor wind wheel and the fresh air wind wheel according to the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature; the indoor and outdoor temperature difference is very large, and under the condition that the rotating speeds of the indoor wind wheel and the fresh air wind wheel are the same, the indoor temperature can still be greatly influenced after the heat-exchanged indoor wind and the outdoor fresh air are mixed, so that the influence of the outdoor fresh air on the indoor temperature can be efficiently reduced by adjusting the rotating speed ratio of the indoor wind wheel and the fresh air wind wheel through the indoor and outdoor temperature difference.
Preferably, when the absolute value of the temperature difference | Δ T | between the indoor ambient temperature and the outdoor ambient temperature satisfies:
when the absolute value delta T is greater than a second preset temperature, adjusting the range of the rotating speed ratio of the indoor fan to the fresh air fan to be 1.5-2; the second preset temperature is preferably 6-8 ℃, which shows that the temperature difference between the indoor and the outdoor is very large at the moment, so that the rotating speed of the indoor wind wheel needs to be greatly increased, the air volume of indoor wind after heat exchange is far greater than that of outdoor fresh air, and the influence of the outdoor fresh air on the indoor temperature is rapidly reduced;
when the first preset temperature is less than or equal to | delta T | < the second preset temperature, adjusting the range of the rotation speed ratio of the indoor wind wheel and the fresh air wind wheel to be 1-1.5; the first preset temperature is preferably 3-5 ℃, which indicates that the indoor and outdoor temperature difference is large at the moment, so that the rotating speed of the indoor fan needs to be slightly increased, the air volume of the indoor air after heat exchange is slightly higher than that of the outdoor fresh air, and the effect of the outdoor fresh air on the indoor temperature can be quickly reduced.
By the aid of the method, when the temperature difference between the indoor and the outdoor is large, the rotating speed of the indoor wind wheel is far greater than that of the fresh air wind wheel; when the indoor and outdoor temperature difference is large, the rotating speed of the indoor wind wheel is slightly larger than that of the fresh air wind wheel, the influence of outdoor fresh air on the indoor temperature is efficiently reduced, and the indoor comfortable temperature is maintained.
Preferably, after the air conditioning mode is started to exchange heat with indoor air, the current indoor environment temperature and the current outdoor environment temperature are detected according to a preset time interval, and if the absolute value | Δ T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature is smaller than the first preset temperature, the air conditioning mode is controlled to be closed, wherein the preset time interval is preferably 30min-1 h. This is because when the indoor outer difference in temperature is less, direct introduction outdoor new trend can not cause the great fluctuation of indoor temperature and can not cause human discomfort, consequently, can be with this moment the air conditioner mode is closed and direct introduction outdoor new trend.
In addition, in the control process of the comfortable air supply control method, if a user actively sends an operation instruction of an air-conditioning mode, the closing of the air-conditioning mode is not controlled according to the absolute value | Δ T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature, but is controlled according to the operation instruction of the user.
Example two:
the present embodiment is different from the first embodiment in that the step after the air conditioning mode is turned on to exchange heat with indoor air includes:
acquiring a set temperature of the fresh air conditioner, wherein the set temperature is an indoor environment temperature which is set by a user and is to be reached; and periodically detecting the difference value between the indoor environment temperature and the set temperature, and controlling the closing of the air conditioning mode according to the difference value between the indoor environment temperature and the set temperature.
Specifically, when the air-conditioning mode is a refrigeration mode, judging whether the indoor environment temperature is less than or equal to the set temperature of the fresh air conditioner, and if so, closing the air-conditioning mode; the reason is that in the refrigeration mode, the temperature of the introduced outdoor air is lower due to sudden drop of the outdoor environment temperature, if the indoor environment temperature is less than or equal to the set temperature at the moment, the comfort temperature set by a user is achieved, the air conditioning mode in the refrigeration state can be closed, the sudden drop of the indoor temperature is avoided, and the comfort level of a human body is further improved;
or when the air-conditioning mode is a heating mode, judging whether the indoor environment temperature is greater than or equal to the set temperature of the fresh air conditioner, if so, closing the air-conditioning mode; the reason is that in the heating mode, the temperature of the introduced outdoor air is higher due to sudden rise of the outdoor environment temperature, if the indoor environment temperature is greater than or equal to the set temperature at the moment, the comfort temperature set by a user is reached, the air conditioning mode in the heating state can be closed, the sudden rise of the indoor temperature is avoided, and the comfort level of a human body is further improved.
Example three:
the third embodiment of the invention discloses a fresh air conditioner, and referring to fig. 2, an indoor unit of the fresh air conditioner is a cabinet type air conditioner indoor unit, and a shell of the air conditioner indoor unit comprises a front panel 400, a rear enclosing plate 500, a chassis 600, an indoor air duct assembly 200 and a fresh air duct assembly 100 which are arranged on the front panel 400 and the rear enclosing plate 500.
The indoor air duct assembly 200 forms an indoor air duct 20, the heat exchanger 300 is disposed in the indoor air duct 20, the indoor air inlet 21 of the indoor air duct 20 is disposed on the rear panel 500, the indoor air outlet 22 of the indoor air duct 20 is disposed on the front panel 400, and the indoor air duct assembly 200 can introduce indoor air from the indoor air inlet 21 and promote the indoor air to pass through the heat exchanger 300 in the indoor air duct 20 and then be blown out from the indoor air outlet 22.
Preferably, the fresh air duct assembly 100 forms a fresh air duct 10, the fresh air duct 10 is located below the indoor air duct 20, and it should be noted that the upper and the lower in this embodiment refer to the upper and the lower of the indoor unit of the air conditioner along the length direction.
As shown in fig. 4, the fresh air inlet 11 of the fresh air duct 10 is disposed on the back panel 500, and the fresh air outlet 12 of the fresh air duct 10 is disposed on the front panel 400 of the housing; the fresh air duct 10 includes a first fresh air duct and a second fresh air duct, wherein the first fresh air duct can be communicated with the indoor air duct 20, and the fresh air duct assembly 100 can promote the indoor air in the indoor air duct after heat exchange by the heat exchanger 300 to flow into the first fresh air duct, and can also promote outdoor fresh air to be introduced into the second fresh air duct from the fresh air inlet 11.
Fig. 3 is an exploded schematic view of a fresh air duct assembly according to an embodiment of the present invention, referring to fig. 3, the fresh air duct assembly 100 includes a first sub-volute 110, a second sub-volute 120, and a third sub-volute 130 connected in sequence from top to bottom, the first sub-volute 110 and the second sub-volute 120 form the first fresh air duct, and the second sub-volute 120 and the third sub-volute 130 form the second fresh air duct, so that the first fresh air duct is located above the second fresh air duct; by adopting the arrangement, the indoor air channel assembly and the fresh air channel assembly are reasonable in structural design and convenient for the first fresh air channel to be communicated with the indoor air channel 10.
Specifically, a first fresh air impeller 140 is disposed in the first fresh air duct, that is, between the first sub-volute 110 and the second sub-volute 120, an axial direction of the first fresh air impeller 140 is a vertical direction, and the vertical direction is a length direction of the indoor unit of the air conditioner; the first fresh air duct has a first air outlet 112 and a first air inlet 111, wherein an opening of the first air inlet 111 faces the indoor air duct 20, and an opening of the first air outlet 112 faces the fresh air outlet 12 of the fresh air duct.
Meanwhile, a second fresh air impeller 150 is arranged in the second fresh air duct, namely between the second sub-volute 120 and the third sub-volute 130, and the axial direction of the second fresh air impeller 150 is also the vertical direction; and the second fresh air duct has a second air outlet 132 and a second air inlet 131, wherein the second air inlet 131 is communicated with the fresh air inlet 11 of the fresh air duct, and the opening of the second air outlet 132 faces the fresh air outlet 12 of the fresh air duct.
Therefore, the first air outlet 112 and the second air outlet 132 are both towards the fresh air outlet 12 of the fresh air duct, so that the indoor air and the outdoor fresh air flow in the same direction and are easy to mix.
Preferably, the first air outlet 112 and the third fresh air outlet 132 are spaced from the fresh air outlet 12 of the fresh air duct, so that indoor air blown out from the first air outlet 112 and outdoor fresh air blown out from the second air outlet 132 can be fully mixed in the fresh air duct and then blown out from the fresh air outlet 12, and the uniformity of mixed air blown out from the fresh air outlet 12 is improved; specifically, the distance between the first air outlet 112 and the fresh air outlet 12 is 5-10cm, and the distance between the second fresh air outlet 132 and the fresh air outlet 12 is 5-10 cm.
Preferably, the first sub-volute 110 is provided with a first guiding portion 160 extending upward along the axial direction of the first fresh air impeller 140, the first guiding portion 160 is cylindrical, an opening of the first guiding portion 160, i.e., the first air inlet 111, and the first guiding portion 160 is arranged to guide indoor air in the indoor air duct 20, so as to guide the indoor air into the first fresh air duct.
Preferably, a second flow guiding portion 170 extending downward along the axial direction of the second fresh air impeller 150 is disposed on the third sub-volute 130, an opening of the second flow guiding portion 170 is the second air inlet 131, and the second air inlet 131 faces the fresh air inlet 11 of the fresh air duct 10. The second flow guide part 170 is arranged to guide the outdoor fresh air entering from the fresh air inlet 11, so that the outdoor fresh air can be conveniently guided into the second fresh air channel.
Preferably, the first fresh air impeller 140 and the second fresh air impeller 150 are coaxially arranged, and the coaxial arrangement is simple in overall structure and easy to implement; in addition, the first fresh air impeller 140 and the second fresh air impeller 150 are both centrifugal impellers, the first fresh air impeller 140 and the second fresh air impeller 150 share one motor 180, and the centrifugal impellers are adopted because of stable operation, low noise, small occupied area and low cost, and on the other hand, the centrifugal impellers can realize axial air inlet and radial air outlet.
Preferably, a movable baffle (not shown) is disposed at an opening of the first guiding portion 160, and the first air inlet 111 can be opened or closed by the movable baffle, so as to control whether to guide indoor air into the first fresh air duct according to different conditions.
In particular, according to the comfortable air supply control method of the embodiment of the invention,
when the first fresh air duct is separated from the indoor air duct, the baffle closes the first air inlet 111, as shown in fig. 5-6, an indoor unit of the air conditioner in a single outdoor fresh air state is formed, the first fresh air duct is not communicated with the indoor air duct 10, and the second fresh air duct can discharge outdoor fresh air introduced from the fresh air inlet 11 to the indoor after passing through the second air outlet 132 and the fresh air outlet 12 in sequence.
When the first fresh air duct is communicated with the indoor air duct, the air conditioner controls the baffle to be in an open state, and the first air inlet 111 is in an open state; as shown in fig. 7-8, a schematic diagram of the indoor unit of the air conditioner in a mixed fresh air state is formed, at this time, the first fresh air duct is communicated with the indoor air duct 10, the heat exchanger is opened, the fresh air duct assembly 100 introduces indoor air after heat exchange in the indoor air duct 10 into the first fresh air duct and then flows out from the first air outlet 112, outdoor fresh air introduced from the fresh air inlet 11 can flow out from the second air outlet 132, and the indoor air and the outdoor fresh air are fully mixed in the fresh air duct and then are discharged into the room from the fresh air outlet 12.
In addition, new trend export 12 department is equipped with the apron 410 that can reciprocate, realizes plugging up when new trend export 12 does not go out the air the upper half and/or the lower half of new trend export 12.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A comfortable air supply control method of a fresh air conditioner, the fresh air conditioner comprises an air conditioning mode and a fresh air mode, the air conditioning mode is used for indoor air heat exchange circulation, the fresh air mode is used for introducing outdoor fresh air into a room, the method is characterized in that,
the comfortable air supply control method comprises the following steps:
receiving an operation instruction of a fresh air mode, and starting the fresh air mode;
detecting indoor ambient temperature and outdoor ambient temperature;
judging whether the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature is greater than or equal to a first preset temperature or not;
if so, automatically starting the air conditioning mode to exchange heat for indoor air, so that the heat-exchanged indoor air and the outdoor fresh air are mixed and then flow into the room.
2. The comfortable air supply control method according to claim 1, wherein the fresh air conditioner comprises an indoor air duct assembly (200) and a fresh air duct assembly (100), the indoor air duct assembly (200) comprises an indoor wind wheel, and the fresh air duct assembly (100) comprises a fresh air wind wheel; the comfortable air supply control method also comprises the step of adjusting the rotating speed ratio of the indoor wind wheel and the fresh air wind wheel according to the absolute value | delta T | of the temperature difference between the indoor environment temperature and the outdoor environment temperature.
3. The method of claim 2, wherein when the absolute value of the temperature difference | Δ T | between the indoor ambient temperature and the outdoor ambient temperature satisfies:
when the angle is greater than the second preset temperature, the range of the rotating speed ratio of the indoor wind wheel to the fresh air wind wheel is 1.5-2;
when the first preset temperature is less than or equal to | delta T | < the second preset temperature, the range of the rotation speed ratio of the indoor wind wheel and the fresh air wind wheel is 1-1.5, wherein the first preset temperature is less than the second preset temperature.
4. The method of claim 3, wherein the first predetermined temperature is 3-5 ℃ and the second predetermined temperature is 6-8 ℃.
5. The method of claim 1, wherein an indoor ambient temperature and an outdoor ambient temperature are detected at predetermined time intervals, and the air-conditioning mode is controlled to be turned off when an absolute value | Δ T | of a temperature difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first predetermined temperature.
6. The comfortable air supply control method according to claim 1, wherein the step of switching on the air conditioning mode to exchange heat with indoor air comprises: acquiring the set temperature of the fresh air conditioner, periodically detecting the difference value between the indoor environment temperature and the set temperature, and controlling the closing of the air conditioning mode according to the difference value between the indoor environment temperature and the set temperature.
7. The comfortable blowing control method according to claim 6, characterized in that,
when the air-conditioning mode is a refrigeration mode, judging whether the indoor environment temperature is less than or equal to the set temperature of the fresh air conditioner, if so, closing the air-conditioning mode;
or when the air-conditioning mode is the heating mode, judging whether the indoor environment temperature is more than or equal to the set temperature of the fresh air conditioner, and if so, closing the air-conditioning mode.
8. A fresh air conditioner, characterized in that the fresh air conditioner applies the comfortable air supply control method of any one of claims 1 to 7.
9. The air conditioner according to claim 8, characterized in that the fresh air conditioner comprises an indoor air duct (20) and a fresh air duct (10), and a fresh air outlet (12) provided on the housing; a first fresh air channel and a second fresh air channel are arranged in the fresh air channel (10), and a first air inlet (111) of the first fresh air channel can be communicated with the indoor air channel (10) to guide indoor air to the fresh air outlet (12); the second fresh air duct is used for guiding outdoor fresh air to the fresh air outlet (12).
10. The air conditioner according to claim 9, wherein the first fresh air duct is located above the second fresh air duct, the first fresh air duct has a first air outlet (112), the second fresh air duct has a second air outlet (132), and the first air outlet (112) and the second fresh air outlet (132) are both open to the fresh air outlet (12) on the housing; the distance between the first air outlet (112), the second air outlet (132) and the fresh air outlet (12) is 5-10 cm.
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