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WO2019223470A1 - Unité intérieure de climatiseur et son procédé de commande - Google Patents

Unité intérieure de climatiseur et son procédé de commande Download PDF

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Publication number
WO2019223470A1
WO2019223470A1 PCT/CN2019/083502 CN2019083502W WO2019223470A1 WO 2019223470 A1 WO2019223470 A1 WO 2019223470A1 CN 2019083502 W CN2019083502 W CN 2019083502W WO 2019223470 A1 WO2019223470 A1 WO 2019223470A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
indoor unit
air conditioner
conditioner indoor
induced draft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/083502
Other languages
English (en)
Chinese (zh)
Inventor
刘光朋
李英舒
史为品
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Publication of WO2019223470A1 publication Critical patent/WO2019223470A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • 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
    • F24F2110/30—Velocity
    • 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

Definitions

  • the invention relates to the technical field of air conditioning, in particular to an air conditioner indoor unit and a control method thereof.
  • the existing air-conditioning usually has a rapid cooling / heating function.
  • the compressor of the air conditioner works at a higher frequency to quickly increase the cooling capacity / heating capacity.
  • the indoor unit of the air conditioner operates at high speed and high air volume to return the cold / hot air after heat exchange to the room, thereby achieving indoor Fast temperature adjustment.
  • the rapid cooling / heating function of the air conditioner mentioned above solves the user's rapid cooling / heating demand to a certain extent, there are some problems in this air conditioner.
  • the cold air / hot air is directly returned to the room by using a strong airflow method, so that the air from the air conditioner has a problem of overcooling / overheating.
  • the overcooling / overheating will cause discomfort to the human body, and then cause air conditioning diseases.
  • some special user groups such as the elderly, children, and pregnant women.
  • the performance of traditional air conditioners ie, the cooling / heating effect
  • wind noise are inconsistent and contradictory.
  • the plan of air conditioner to increase the cooling / heating effect by increasing the air supply volume makes the air supply volume increase, while the noise also increases. It will become larger; but if the noise reduction index is met, the performance of the air conditioner will be limited to a certain extent.
  • the present invention provides an air conditioner indoor unit, including a main body, The main body is provided with an air return port and an air supply port, and an air blower is provided in the body.
  • the air conditioner indoor unit further includes an air supply module, and the air supply module includes a housing.
  • the housing is provided with an outdoor communication port.
  • Intake duct the casing is provided with a purification component and an induced draft fan, and the supplementary air module is arranged to be able to introduce indoor air into the casing through the intake duct and driven by the induced draft fan.
  • the purification component the air is discharged to the air outlet through the air outlet of the induced draft fan and mixed with the air discharged from the air outlet.
  • the air supply module further includes a connecting pipe, a through hole is provided on the housing, a air mixing channel is provided on the body, and the first end of the connecting pipe is connected with The exhaust port of the induced draft fan is connected, the second end of the connection pipe is connected to the first end of the mixed air passage through the through hole, and the second end of the mixed air passage is connected to the air outlet Connected.
  • the connecting pipe has a curved surface segment; and / or the second end of the connecting pipe has a bell mouth structure.
  • connection pipe and / or the mixed air passage is provided with a drainage plate, and the drainage plate can introduce nearby air into the connection pipe and / Or the mixed air channel.
  • a cross section of the air guide plate is arc-shaped, and the arc shape can draw nearby air in a direction toward the second end of the air mixing passage.
  • an air inlet is further provided on the air-conditioning indoor unit at a position close to the drainage plate.
  • the purification assembly includes a partition and a filter layer, the partition divides the housing into a first chamber and a second chamber, and the induced draft fan is located in the A first chamber, the filter layer is located in the second chamber, a filter hole is opened in the partition, and the first chamber and the second chamber are communicated through the filter hole.
  • the partition is sealedly connected to the casing.
  • the air-conditioning indoor unit is a wall-mounted air-conditioning indoor unit, and the air supplement module is detachably disposed on the back of the body.
  • the present invention also provides a control method of an air conditioner indoor unit.
  • the control method includes:
  • the air-conditioning indoor unit includes a main body, the main body is provided with an air return port and an air outlet, and an air blower is provided in the main body.
  • the air-conditioning indoor unit further includes an air supply module and air supply.
  • the module includes a housing.
  • the housing is provided with an air inlet pipe communicating with the outdoor.
  • the housing is provided with a purification component and an induced draft fan.
  • the air supply module is arranged to be able to introduce indoor air into the housing through the inlet pipe driven by the induced draft fan. After passing through the purification unit, it is discharged to the air supply port through the exhaust port of the induced draft fan and mixed with the air discharged from the air supply port.
  • the present invention can significantly improve the phenomenon that the air conditioner indoor unit supplies air undercooling / overheating at a large air volume, and greatly reduce the noise of the air conditioner indoor unit during high air volume operation. Specifically, after repeated experiments, observations, analysis, and comparisons by the inventors, it was found that when the fan in the air-conditioning indoor unit and the induced fan in the air induction module are started at the same time, the air-conditioning indoor unit can pass the induced fan and the fan in the air-conditioning indoor unit.
  • the air supply is shared at the low and medium speeds, so that under the premise of providing the same air supply, the noise generated by the fan in the indoor unit of the air conditioner at high speed is greatly reduced, and the operation performance of the air conditioner is unchanged or even improved.
  • the outdoor fresh air is discharged to the air supply port and mixed with the air discharged from the air supply port to make the air conditioner's airflow softer and avoid many problems such as air conditioner diseases caused by the supercooled and overheated air supply of the air conditioner indoor unit.
  • the installation of the air inlet pipe enables the air conditioner indoor unit to introduce outdoor fresh air during operation, which guarantees the oxygen content of the indoor air and solves many problems such as poor indoor air turbidity.
  • the setting of the purification component enables the indoor unit of the air conditioner to purify and filter the fresh air while introducing the fresh air, thereby improving the cleanliness of the fresh air and ensuring that the indoor air is not subject to secondary pollution.
  • the present invention solves the problems of overcooling / overheating and high noise of the air conditioner in the prior art when the air conditioner is operating at a large air volume, which obviously improves the user experience, and the structure of the present invention is simple, the effect is significant, and the method is suitable. Mass promotion and use.
  • FIG. 1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to a first embodiment of the present invention
  • FIG. 2 is an exploded schematic view of a wall-mounted air conditioner indoor unit according to a first embodiment of the present invention
  • FIG. 3 is a cross-sectional view of FIG. 1 at A-A;
  • FIG. 4 is a rear view of the wall-mounted air conditioner indoor unit according to the first embodiment of the present invention after the rear cover and the filter layer are removed;
  • FIG. 5 is a working principle diagram of a wall-mounted air conditioner indoor unit according to a first embodiment of the present invention, which shows a suction process of a draft fan;
  • FIG. 6 is a working principle diagram of the wall-mounted air-conditioning indoor unit in the first embodiment of the present invention, which shows the air mixing process of the wall-mounted air-conditioning indoor unit;
  • FIG. 7 is an exploded schematic view of a wall-mounted air conditioner indoor unit in a second embodiment of the present invention.
  • FIG. 8 is a working principle diagram of a wall-mounted air conditioner indoor unit in a second embodiment of the present invention, which shows the suction process of a draft fan;
  • FIG. 9 is a flowchart of a method for controlling a wall-mounted air conditioner indoor unit according to the present invention.
  • Air inlet 1. Main body; 11. Return air inlet; 12. Air outlet; 13. Heat exchanger; 14. Cross-flow fan; 15. Mixed air channel; 16. Air inlet; 2. Air supply module; 21; Housing; 21a, Front cover; 21b, rear cover; 211, air inlet pipe; 212, through hole; 213, mounting hole; 23, induced draft fan; 230, exhaust vent; 231, volute; 232, motor; 233, fan; 25. Connecting pipe; 27. Drain plate; 281. First chamber; 282. Second chamber; 29. Purification component; 291; Separator; 292; Filter layer; 293 Filter hole.
  • the terms “installation”, “connected”, and “connected” should be understood in a broad sense. For example, they may be fixed connections or It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • installation should be understood in a broad sense. For example, they may be fixed connections or It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • the present invention proposes a wall-mounted air conditioner indoor unit, in order to reduce the noise of the air conditioner indoor unit while increasing the amount of induced air and breaking
  • the impasse between air volume and noise reduction of traditional air-conditioning indoor units can improve the user experience.
  • FIGS. 1 to 6 are schematic structural diagram of a wall-mounted air-conditioning indoor unit according to the first embodiment of the present invention
  • FIG. 2 is an exploded schematic view of the wall-mounted air-conditioning indoor unit according to the first embodiment of the present invention
  • Sectional view at AA FIG. 4 is a rear view of the wall-mounted air conditioner indoor unit in the first embodiment of the present invention after removing the rear cover and the filter layer
  • FIG. 5 is a wall-mounted air conditioner indoor in the first embodiment of the present invention
  • Fig. 6 is a working principle diagram of the wall-mounted air-conditioning indoor unit in the first embodiment of the present invention, which shows a hybrid of the wall-mounted air-conditioning indoor unit. Wind process.
  • the wall-mounted air conditioner indoor unit (hereinafter referred to as an indoor unit) of the present invention mainly includes a main body 1 and an air supply module 2 installed outside the main body 1.
  • An air return port 11 and an air supply port are provided in the main body 1 12.
  • the air supply module 2 is installed close to the back of the indoor unit, and includes a housing 21.
  • An air inlet pipe 211 is provided on the housing 21, and a purification component 29, an induced draft fan 23, and a connection pipe 25 are provided in the casing 21.
  • the induced draft fan 23 has an air inlet and an air outlet 230, a first end of the connection pipe 25 is connected to the induced draft fan 23, and a second end is connected to the air outlet 12 of the indoor unit.
  • the supplementary air module 2 is configured to be able to introduce outdoor fresh air into the casing 21 through the air intake pipe 211 under the drive of the induced draft fan 23, and then pass through the purification module 29, the suction port of the induced draft fan 23, and the exhaust port 230 of the induced draft fan 23 in this order. After connecting with the connecting pipe 25, it is discharged from the second end of the connecting pipe 25 to the air outlet 12 of the indoor unit.
  • the cross-flow fan 14 inside the indoor unit and the draft fan 23 in the air induction module rotate at a low and medium speed at the same time.
  • the return air inlet 11 into the body 1 and passed through the heat exchanger 13 it is sent into the room from the air outlet 12; the outdoor fresh air is driven by the induced draft fan 23 into the housing 21 from the air inlet pipe 211, and passes through the purification module 29 in turn.
  • the air inlet of the induced draft fan 23, the air outlet of the induced draft fan 23, and the connecting pipe 25 are mixed with the air discharged through the second end of the connecting pipe 25 to the air inlet 12 of the indoor unit and the air passing through the heat exchanger 13 and reaching the air outlet 12 It is then sent into the room through the air outlet 12.
  • the indoor unit of the present invention can mix the outdoor fresh air air discharged from the air induction module with the air sent from the air outlet 12 of the indoor unit during operation, which significantly improves the indoor unit's supercooled air supply at high air volumes.
  • Overheating phenomenon by simultaneously starting the induced draft fan 23 and the cross flow fan 14 at the same time at low and medium speeds, the noise of the indoor unit when the cross flow fan 14 is running at high speed alone is greatly reduced. That is, the present invention solves the problems of overcooling / overheating and high noise of the air conditioner in the prior art when the air conditioner is operating at a large air volume, and the air supplement module 2 has a simple structure and a significant effect, and can not affect the aesthetics of the indoor unit. At the same time, it can increase the supply air volume and assist the air conditioner to perform cooling / heating, which is suitable for large-scale popularization.
  • the housing 21 is roughly a rectangular parallelepiped, which includes a front cover 21 a and a rear cover 21 b.
  • the front cover 21 a can be snapped together. , Gluing, screwing, etc., and fastened to the rear cover 21b.
  • the front cover 21a can be connected to the body 1 in the same manner.
  • the purification module 29 includes a partition 291 and a filter layer 292. The outer edge of the partition 291 is hermetically connected to the casing 21, and the connection allows the partition 291 to separate the casing 21 into a first chamber 281 and a second chamber that are independent of each other.
  • the induced draft fan 23 is located in the first chamber, and the filter layer 292 is located in the second chamber.
  • a filter hole 293 is defined in the partition plate 291, and the first chamber communicates with the second chamber through the filter hole 293.
  • the filter layer 292 is fixed in a groove provided on the left side of the partition 291 by means of bonding or snapping, etc., and the second through hole 212 is completely covered after being fixed.
  • the filter layer 292 is a filter structure that can adsorb or decompose harmful gases in the air, such as HEPA filters or activated carbon filters.
  • HEPA filters usually include three layers of filter layers (primary filter layer, charged layer, electrostatic dust collection layer).
  • the removal efficiency of particles with a diameter of 0.3 microns or less can reach more than 99.97%.
  • the area of the partition plate 291 that is, the projected area on the front cover 21 a
  • the induced draft fan 23 is sealed in a manner that is significantly smaller than the area of the front cover 21 a.
  • the first chamber formed by the partition 291 and the front cover 21a In the first chamber formed by the partition 291 and the front cover 21a.
  • the front cover 21 a and the rear cover 21 b are respectively provided with half mounting holes 213 (see FIG. 2) on the upper sides thereof. After the housing 21 is installed, a complete mounting hole 213 can be formed.
  • the indoor end of the air inlet pipe 211 has a bell mouth structure, which is installed in cooperation with the mounting hole 213, such as plugging or screwing, etc .; the outdoor end of the air inlet pipe 211 extends through the wall to the outside.
  • the induced draft fan 23 is preferably a centrifugal fan, which includes a volute 231, a motor 232, and a fan 233.
  • the fan 233 is formed with an air inlet.
  • the volute 231 is provided with an exhaust port.
  • the hole 293 is substantially coaxial.
  • a through hole 212 is provided at the lower portion of the right side of the front cover 21a, and a corresponding position on the body 1 is provided with a mixing channel 15 (see FIG. 3).
  • the first end of the connecting pipe 25 is connected to the exhaust port of the induced draft fan 23.
  • the second end of the connecting pipe 25 is connected to the first end of the air mixing passage 15 through the through hole 212, and the second end of the air mixing passage 15 extends to the air inlet 12 of the indoor unit and communicates with the air outlet 12.
  • the pipe between the first end and the second end of the connecting pipe 25 has a curved surface section, that is, the cross section of the pipe is arc-shaped, and the second end of the connecting pipe 25 has a bell mouth structure.
  • a plurality of air guide plates 27 are also provided in the connecting pipe 25 and the air mixing channel 15, and an air inlet 16 is also provided on the casing 21 and the body 1 near the air guide plates 27, such as The air inlet is opened directly below the connecting pipe 25 and the air mixing channel 15.
  • the deflector 27 can introduce nearby indoor air into the connecting pipe 25 and the mixed air passage 15 and mix with the air flow from the induced air blower 23 and eject it from the second end of the mixed air passage 15. As shown in FIG.
  • the cross section of the deflector 27 is preferably an arc of a convex shape, so that the indoor air can be better guided to the air mixing passage 15 when the indoor air flows through the curved deflector 27 from below the deflector 27.
  • the second end flows.
  • the air supply module 2 can be controlled separately.
  • the air supply module 2 is equipped with an electric control component (not shown in the figure).
  • the remote control for the air supply module 2 or a mobile APP is used to control the electric control component.
  • the buttons on the air conditioner remote control for controlling the air supply module 2 are reserved in advance, and the main control component is directly connected to the air conditioner through the air conditioner remote control.
  • the device reserves an interface to implement air-to-air supply module 2 control.
  • the above arrangement has the advantage that, through the setting of the supplementary air module 2, when the indoor unit is operating, the induced draft fan 23 and the cross-flow fan 14 are operated together at a low and medium speed instead of the high-speed operation of the cross-flow fan 14, so that the air supply volume is adjusted. In the case of constant or even increase, the noise is greatly reduced.
  • the cross-flow fan 14 After repeated experiments, observations, analysis, and comparisons by the inventors, it has been found that, for the cross-flow fan 14, the higher the rotation speed, the greater the noise. When the rotation speed increases to the maximum speed, the air flow accelerates and the vibration increases significantly. The noise generated by the machine will increase geometrically.
  • the induced draft fan 23 can share the air supply volume for the cross-flow fan 14, thereby greatly reducing the amount of air in the indoor unit of the air conditioner while providing the same air supply volume.
  • the noise generated by the high-speed fan at high speed ensures that the operating performance of the air conditioner is unchanged or even improved.
  • the air flow emitted through the mixed air channel 15 is mixed with the wind at the air supply port 12, on the one hand, it makes the air conditioner's air output better and softer, and avoids many problems such as air conditioning diseases caused by the supercooled / overheated air supply of the air conditioner indoor unit;
  • the air conditioner indoor unit can also introduce outdoor fresh air during operation, guarantee the oxygen content of the indoor air, and solve many problems such as indoor turbidity and poor quality.
  • the installation of the purification module 29 enables the indoor unit of the air conditioner to purify and filter the fresh air while introducing the fresh air, improving the cleanliness of the fresh air, and effectively filtering the PM2.5 and other floating particles in the air to ensure that the indoor air is not subject to secondary air. Pollution.
  • the setting of the drainage plate 27 makes full use of the Venturi effect.
  • the air pressure is large, and the rapid flow of air will cause negative pressure near the drainage plate 27. It will be sucked into the jet channel along the draft plate 27 to mix smoothly with the air flow, so that the air volume can be further increased while the speed of the draft fan 23 and the cross-flow fan 14 is kept constant, or the air volume is guaranteed , So that the rotation speed of the induced draft fan 23 and the cross flow fan 14 can be further reduced, and the noise is further reduced.
  • the arc-shaped arrangement of the cross section of the drainage plate 27 reduces the on-line loss during the drainage and the friction loss when mixing with the air flow in the jet channel, and effectively improves the air intake.
  • the connecting pipe 25 has a curved surface section and a second end with a bell mouth, so that the air flow discharged from the exhaust port of the induced draft fan 23 can be smoothly transferred into the jet channel, thereby reducing loss along the way.
  • the indoor end of the air inlet pipe 211 is provided with a bell mouth structure, which can make outdoor fresh air enter the casing 21 more smoothly and smoothly, thereby increasing the amount of air drawn by the induced fan 23 and further increasing the amount of air sent.
  • the partition plate 291 seals the induced draft fan 23 in the first chamber formed by the partition plate 291 and the front cover 21a in a manner that is significantly smaller than the area of the front cover 21a. The indoor air entering the casing 21 by the forward air duct 211 is also blocked.
  • the air supply module 2 can be installed outside the body 1 of the existing wall-mounted air-conditioning indoor unit, this also enables the air supply module 2 of the present invention to be sold separately, and the user does not need to spend a higher cost to purchase a new low-noise
  • the air conditioner can be installed outside the main body 1 of the indoor unit of the air conditioner with only a small purchase cost and modification cost, which greatly expands the application scenario of the present invention and is suitable for large-scale promotion and use.
  • the cross section of the drainage plate 27 may be set to other straight lines or arcs, as long as the shape can reduce the loss along the course of the drainage; for another example, the drainage plate 27 may only be provided in the connection pipe 25 or mixed air In the channel 15, correspondingly, only an air inlet is provided on the housing 21 or the main body 1.
  • the air supply module 2 may not be provided with a connection pipe 25, but the exhaust port of the induced fan 23 may be directly connected to the air mixing channel.
  • the connecting pipe 25 may not have a curved surface section, but may be replaced by a right-angled section, and the second end of the connecting pipe 25 may not be provided with a bell mouth structure, etc .; for another example, the induced draft fan 23 may also use other such as Axial flow fans or mixed flow fans, etc .; for another example, the area of the partition plate 291 can of course be set to be approximately equal to the area of the front cover 21a, and is clamped between the front cover 21a and the rear cover 21b.
  • the housing 21 is evenly divided into two chambers.
  • FIG. 7 is an exploded schematic diagram of the wall-mounted air-conditioning indoor unit in the second embodiment of the present invention
  • FIG. 8 is a working principle diagram of the wall-mounted air-conditioning indoor unit in the second embodiment of the present invention, Suction process of the fan.
  • two induced draft fans 23 and two connecting pipes 25 may also be provided in the housing 21, corresponding to Ground
  • the partition plate 291 is provided with two filtering holes 293
  • the housing 21 is provided with two through holes 212
  • the body 1 is provided with two mixing air channels 15.
  • the induced draft fan 23 is symmetrically disposed in the casing 21. In this way, when the indoor unit is working, the two induced draft fans 23 and the cross-flow fan 14 can achieve the same air supply volume at a smaller rotational speed, thereby further reducing the noise generated by the indoor unit when the air supply volume is large and improving the user. Experience.
  • FIG. 9 is a flowchart of a method for controlling a wall-mounted air conditioner indoor unit according to the present invention.
  • control method of the air-conditioning indoor unit of the present invention mainly includes the following steps:
  • S100 Obtain a set wind speed of the indoor unit. For example, by obtaining the set wind speed from the set parameters when the user selects the operating mode of the air conditioner, or when the wind speed of the indoor unit is set to automatic wind speed, the current operating wind speed is automatically obtained as the set wind speed;
  • the induced draft fan 23 and the cross-flow fan 14 are controlled to run simultaneously at the first set speed and the second set speed, respectively.
  • the wind speed threshold may be the high speed or the wind speed corresponding to the high speed of the cross-flow fan 14 when operating alone.
  • the control module of the indoor unit controls the induced draft fan 23 and the cross-flow fan 14 at the same time at low and medium speeds. Start operation to reduce the noise generated by the indoor unit.
  • the low speed is lower than the medium speed
  • the medium speed is lower than the high speed.
  • the control module of the indoor unit controls the induced draft fan 23 and the cross-flow fan 14 at the same time at a first set speed and a second set speed that are smaller than the wind speed threshold. Run at the same time.
  • the first set speed and the second set speed may be the same, or may be set based on experiments, such as a certain proportional relationship between the first set speed and the second set speed to ensure the induced fan 23 Noise is minimized when the cross-flow fan 14 is turned on simultaneously.
  • the wind speed threshold can also be adjusted according to different models and use environments, and the adjustment should be mainly based on the noise value when the cross-flow fan 14 is operated alone.
  • air-conditioning indoor unit of the present invention is described in conjunction with a wall-mounted air-conditioning indoor unit, it is obvious that the air supply module of the present invention can also be applied to other air-conditioning indoor units, such as a cabinet-type air-conditioning indoor unit.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne une unité intérieure de climatiseur et son procédé de commande, l'unité intérieure de climatiseur comprenant un corps (1), le corps (1) étant pourvu d'un orifice de retour d'air (11) et d'un orifice de soufflage d'air (12), une soufflante d'air (14) étant disposée à l'intérieur du corps (1), l'unité intérieure de climatiseur comprenant également un module d'enrichissement en air (2), le module d'enrichissement en air (2) comprenant une coque (21), un tuyau d'admission d'air (211) en communication avec l'extérieur étant disposé sur la coque (21), et un ensemble de purification (29) et un ventilateur de guidage d'air (23) étant disposé à l'intérieur de la coque (21). Le module d'enrichissement en air (2) est conçu pour pouvoir être entraîné par le ventilateur de guidage d'air (23) afin d'introduire de l'air frais depuis l'extérieur dans la coque (21) au moyen du tuyau d'admission d'air (211), l'air frais passant à travers l'ensemble de purification (29), étant évacué vers l'orifice de soufflage d'air (12) au moyen d'un orifice d'évacuation d'air (230) du ventilateur de guidage d'air (23), et le mélange avec l'air est évacué par l'orifice de soufflante d'air (12), afin d'améliorer le phénomène de l'alimentation en air excessivement froid/chaud de l'unité intérieure de climatiseur, et de réduire le bruit de fonctionnement de l'unité intérieure de climatiseur.
PCT/CN2019/083502 2018-05-21 2019-04-19 Unité intérieure de climatiseur et son procédé de commande Ceased WO2019223470A1 (fr)

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CN108759018A (zh) * 2018-05-21 2018-11-06 青岛海尔空调器有限总公司 空调室内机及其控制方法
CN110894988A (zh) * 2018-09-13 2020-03-20 青岛海尔空调器有限总公司 柜式空调器的射流装置及具有该装置的柜式空调器
CN110160164B (zh) * 2019-05-15 2023-03-24 青岛海尔空调器有限总公司 悬角空调室内机
CN110118389B (zh) * 2019-05-15 2023-04-07 青岛海尔空调器有限总公司 悬角空调室内机
CN110160159B (zh) * 2019-05-15 2023-03-21 青岛海尔空调器有限总公司 悬角空调室内机
CN110118385B (zh) * 2019-05-15 2023-03-21 青岛海尔空调器有限总公司 悬角空调室内机
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