WO2019223474A1 - 空调室内机及其控制方法 - Google Patents

空调室内机及其控制方法 Download PDF

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Publication number
WO2019223474A1
WO2019223474A1 PCT/CN2019/083506 CN2019083506W WO2019223474A1 WO 2019223474 A1 WO2019223474 A1 WO 2019223474A1 CN 2019083506 W CN2019083506 W CN 2019083506W WO 2019223474 A1 WO2019223474 A1 WO 2019223474A1
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WO
WIPO (PCT)
Prior art keywords
air
indoor unit
air conditioner
conditioner indoor
induced draft
Prior art date
Application number
PCT/CN2019/083506
Other languages
English (en)
French (fr)
Inventor
刘光朋
李英舒
曾福祥
于尊才
Original Assignee
青岛海尔空调器有限总公司
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Publication of WO2019223474A1 publication Critical patent/WO2019223474A1/zh

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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
    • 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
    • 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
    • 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
    • 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
    • F24F2013/247—Active noise-suppression
    • 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

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 opening and an air supply opening, the main body is provided with a blower, and the air conditioner indoor unit further includes an air supply module, the air supply module includes a housing, and the housing is provided with a first air inlet.
  • the housing is provided with a purification component and an induced draft fan, and the supplementary air module is configured to be able to introduce indoor air into the housing through the first air inlet and pass through the first air inlet driven by the induced fan. After the component is purified, it 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 air mixing passage through the through hole, and the second end of the air mixing 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.
  • a second 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 a first air inlet.
  • the housing is provided with a purification component and an induced draft fan.
  • the supplementary air module is arranged to be able to introduce indoor air into the housing through the first inlet through the induced air fan. After passing through the purification component, 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 indoor air flow emitted from the exhaust port of the induced draft fan is mixed with the wind from the air supply port to make the air conditioner softer and avoid many problems such as air conditioning diseases caused by the supercooling / overheating of the air conditioner indoor unit.
  • the setting of the purification component enables the indoor unit of the air conditioner to circulate and purify the indoor air during operation, which improves the cleanliness of the indoor air and reduces floating particles in the air.
  • the present invention solves the problems of overcooling / overheating of the air supply and high noise when the air conditioner operates in a large air volume in the prior art, and has a simple structure and remarkable effect, and is suitable for large-scale popularization.
  • 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 supply module 21. Shell; 21a; Front cover; 21b ⁇ Rear cover; 211, first air inlet; 212, through hole; 221, second air inlet; 23, induced draft fan; 230, exhaust air outlet; 231, volute; 232, motor; 233, fan; 25, Connection tube; 27, drainage plate; 281, first chamber; 282, second chamber; 29, purification component; 291, partition; 292, filter layer; 293 filter hole.
  • first air inlet in the drawings is provided on the front and back sides of the housing, this positional relationship is not static, and those skilled in the art can adjust it as needed to suit specific applications.
  • first air inlet can also be provided on the top or bottom surface of the casing.
  • 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 casing 21.
  • the casing 21 is provided with a first air inlet 211.
  • the casing 21 is provided with a purification component 29, an induced draft fan 23, and a connection pipe 25.
  • the fan 23 has an air inlet and an air outlet.
  • the first end of the connection pipe 25 is connected to the induced fan 23 and the 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 indoor air into the casing 21 through the first air inlet 211 under the drive of the induced draft fan 23, and then pass through the purification module 29, the intake of the induced draft fan 23, and the exhaust of the induced draft fan 23 in this order. After 230 and the connection pipe 25, it is discharged from the second end of the connection 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, and a part of the indoor air is in the cross-flow fan 14.
  • the air inlet 11 After being driven by the air inlet 11 into the body 1 and passing through the heat exchanger 13, it is sent into the room from the air inlet 12; the other part of the indoor air is driven by the induced draft fan 23 into the casing 21 from the first air inlet 211, and sequentially After passing through the purification module 29, the air inlet of the induced draft fan 23, the air outlet of the induced draft fan 23, and the connecting pipe 25, the second end of the connecting pipe 25 is exhausted to the air inlet 12 of the indoor unit and passes through the heat exchanger 13 to reach the air outlet 12 The mixed air is sent into the room through the air outlet 12.
  • the indoor unit of the present invention can mix the indoor air flow discharged through the air induction module with the wind 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.
  • 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.
  • a first air inlet 211 is provided on the front and rear sides of the front cover 21a and the rear cover 21b.
  • the first air inlet 211 is provided with an air inlet grill.
  • the air is drawn in front of the induced draft fan 23, that is, in front of the filter layer 292 (that is, the left side of the filter layer 292 in FIG. 2, the same below), such as the inlet grille on the front cover 21a is inclined to the left to air Diversion is performed to the left to the front of the filter layer 292, and the inlet grid on the rear cover 21b is arranged in a straight line or slightly inclined to the right to guide the air to the front of the filter layer 292.
  • 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 drainage plates 27 are also provided in the connecting pipe 25 and the air mixing channel 15, and a second air inlet 221 is also provided on the casing 21 and the body 1 near the drainage plate 27.
  • the second 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 indoor air flow emitted through the mixed air channel 15 is mixed with the wind at the air supply opening 12 to make the air conditioner's air flow better and softer, avoiding many problems such as air conditioning diseases caused by the supercooled / overheated air supply of the air conditioner indoor unit.
  • the installation of the purification component 29 enables the indoor unit of the air conditioner to circulate and purify the indoor air during operation, effectively filtering pm2.5 and other floating particles in the air, and improving the cleanliness of the indoor air.
  • the setting of the drainage plate 27 makes full use of the Venturi effect. When the air flow passes through the connecting pipe 25 and the mixed air passage 15, the air pressure is large, and the rapid flow of air will cause negative pressure near the drainage plate 27.
  • the arc-shaped arrangement 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, which 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 inlet grille can be used to draw the indoor air to the suction port of the draft fan 23, which can make the draft fan 23 suck the air more smoothly, increase the suction volume, and then increase the air supply volume.
  • 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 significantly smaller than the area of the front cover 21a, and also allows the first air inlet 211 on the front cover 21a to enter the housing.
  • the indoor air of the body 21 can also be guided to the front of the induced draft fan 23 to ensure the filtering effect.
  • 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 above embodiments are only used to explain the principle of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above embodiments so that the present invention can Apply to more specific application scenarios.
  • 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 a second air inlet is provided on the housing 21 or the main body 1.
  • the supplementary air module 2 may not be provided with a connection pipe 25, but the exhaust air outlet of the induced fan 23 may be directly mixed with The air duct 15 communicates; for another example, 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; for another example, the induced fan 23 may also be used Others, such as axial flow fans or mixed flow fans; 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 filter holes 293
  • the casing 21 is provided with two through holes 212
  • the body 1 is provided with two air mixing 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.

Abstract

一种空调室内机及其控制方法，该空调室内机包括本体（1），本体（1）设置有回风口（11）和送风口（12），本体（1）内设置有送风机（14），空调室内机还包括补风模块（2），补风模块（2）包括壳体（21），壳体（21）上设置有第一进风口（211），壳体（21）内设置有净化组件（29）和引风机（23），补风模块（2）设置成能够在引风机（23）的带动下，将室内空气通过第一进风口（211）引入壳体（21）并穿过净化组件（29）后，通过引风机（23）的排风口（230）排出至送风口（12）并与送风口（12）排出的风相混合，以改善空调室内机送风过冷/过热的现象，并降低空调室内机的运行噪音。

Description

空调室内机及其控制方法 技术领域
本发明涉及空气调节技术领域，具体涉及一种空调室内机及其控制方法。
背景技术
随着生活水平的日益提高，人们对于生活质量的要求也越来越高，这种要求在家用电器上体现得尤为明显。以空调为例，当室内外温差较大时，为了满足用户从室外进入室内后快速制冷/制热的需求，现有的空调通常都具有快速制冷/制热功能，在开启快速制冷/制热功能时，空调的压缩机工作在较高的频率以快速提升制冷量/制热量，空调室内机以高转速、大风量运行将热交换后的冷空气/热空气送回室内，从而实现对室内温度的快速调节。
虽然上述空调的快速制冷/制热功能在一定程度上解决了用户的快速制冷/制热需求，但是这种空调也不可避免地存在一些问题。首先，采用大风量强劲吹风的方式将冷空气/热空气直接送回室内，使得空调吹出的空气存在过冷/过热的问题，过冷/过热都会引起人体的不适，进而引发空调病。尤其是对于老人、儿童、孕妇等一些特殊的用户群体来说尤为明显。其次，传统空调的性能(即制冷/制热效果)和风噪是一对不可调和矛盾，空调通过加大送风量提升制冷/制热效果的方案，使得送风量增大的同时，噪音也随之变大；但是如果满足了降噪指标，那么空调的性能在一定程度上又会受到限制。这些问题在图书馆、病房、失眠人群的房间等一些特殊的应用场景中尤为明显。也就是说，现有的空调在送风量大时存在送风过冷/过热和噪音大的问题。
相应地，本领域需要一种新的空调室内机及其控制方法来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即为了解决现有的空调在送风量大时存在的送风过冷/过热和噪音大的问题，本发明提供了一种空调室内机，包括本体，所述本体设置有回风口和送风口，所述本体内设置有送风机，所述空调室内机还包括补风模块，所述补风模块包括壳体，所述壳体上设置有第一 进风口，所述壳体内设置有净化组件和引风机，所述补风模块设置成能够在所述引风机的带动下，将室内空气通过所述第一进风口引入所述壳体并穿过所述净化组件后，通过所述引风机的排风口排出至所述送风口并与所述送风口排出的风相混合。
在上述空调室内机的优选技术方案中，所述补风模块还包括连接管，所述壳体上设置有通孔，所述本体上设置有混风通道，所述连接管的第一端与所述引风机的排风口连接，所述连接管的第二端穿过所述通孔与所述混风通道的第一端连接，所述混风通道的第二端与所述送风口连通。
在上述空调室内机的优选技术方案中，所述连接管具有弧面段；并且/或者所述连接管的第二端具有喇叭口结构。
在上述空调室内机的优选技术方案中，所述连接管和/或所述混风通道设置有引流板，所述引流板能够在所述引风机工作时将附近的空气引入所述连接管和/或所述混风通道。
在上述空调室内机的优选技术方案中，所述引流板的截面为弧形，所述弧形能够将附近的空气向所述混风通道的第二端的方向引流。
在上述空调室内机的优选技术方案中，所述空调室内机上靠近所述引流板的位置还开设有第二进风口。
在上述空调室内机的优选技术方案中，所述净化组件包括隔板和过滤层，所述隔板将所述壳体分隔为第一腔室和第二腔室，所述引风机位于所述第一腔室，所述过滤层位于所述第二腔室，所述隔板上开设有过滤孔，所述第一腔室和第二腔室通过所述过滤孔连通。
在上述空调室内机的优选技术方案中，所述隔板与所述壳体密封连接。
在上述空调室内机的优选技术方案中，所述空调室内机为壁挂式空调室内机，所述补风模块以可拆卸的方式设置于所述本体的背面。
本发明还提供了一种空调室内机的控制方法，所述控制方法包括：
获取所述空调室内机的设定风速；
在所述设定风速大于风速阈值时，控制所述引风机和所述送风机分别以第一设定转速和第二设定速度同时运行。
本领域技术人员能够理解的是，在本发明的优选技术方案中，空调室内机包括本体，本体设置有回风口和送风口，本体内设置有送风机，空调室内机还包括补风模块，补风模块包括壳体，壳体上设置有第一进风口，壳体内 设置有净化组件和引风机，补风模块设置成能够在引风机的带动下，将室内空气通过第一进风口引入壳体并穿过净化组件后，通过引风机的排风口排出至送风口并与送风口排出的风相混合。
通过补风模块的设置，本发明能够明显改善空调室内机在大风量时送风过冷/过热的现象，大幅降低空调室内机在大风量运行时的噪音。具体而言，经发明人反复试验、观测、分析和比较发现，在同时启动空调室内机中的风机和引风模块中的引风机时，空调室内机能够通过引风机和空调室内机中的风机同时中低速运转分担送风量，从而在提供相同送风量的前提下，大幅度降低空调器室内机中的风机高速运行时产生的噪音，保证空调的运行性能不变甚至有所提高。通过引风机的排风口射出的室内空气流与送风口的风相混合，使得空调的出风更柔和，避免空调室内机的送风过冷/过热引起的空调病等诸多问题。净化组件的设置，使得空调室内机在运行时还能够对室内空气进行循环净化和过滤，提高了室内空气的清洁度，减少空气中的浮游颗粒。也就是说，本发明解决了现有技术中空调在大风量运行时存在的送风过冷/过热和噪音大的问题，并且结构简单，效果显著，适宜大规模推广使用。
附图说明
下面参照附图并结合壁挂式空调室内机来描述本发明的空调室内机及其控制方法。附图中：
图1为本发明的第一种实施例中壁挂式空调室内机的结构示意图；
图2为本发明的第一种实施例中壁挂式空调室内机的爆炸示意图；
图3为图1在A-A处的剖视图；
图4为本发明的第一种实施例中壁挂式空调室内机去除后罩壳和过滤层后的后视图；
图5为本发明的第一种实施例中壁挂式空调室内机的工作原理图，其示出了引风机的吸风过程；
图6为本发明的第一种实施例中壁挂式空调室内机的工作原理图，其示出了壁挂式空调室内机的混风过程；
图7为本发明的第二种实施例中壁挂式空调室内机的爆炸示意图；
图8为本发明的第二种实施例中壁挂式空调室内机的工作原理图，其示出了引风机的吸风过程；
图9为本发明的壁挂式空调室内机的控制方法的流程图。
附图标记列表
1、本体；11、回风口；12、送风口；13、热交换器；14、贯流风机；15、混风通道；2、补风模块；21、壳体；21a、前罩壳；21b、后罩壳；211、第一进风口；212、通孔；221、第二进风口；23、引风机；230、排风口；231、蜗壳；232、电机；233、风扇；25、连接管；27、引流板；281、第一腔室；282、第二腔室；29、净化组件；291、隔板；292、过滤层；293过滤孔。
具体实施方式
下面参照附图来描述本发明的优选实施例。本领域技术人员应当理解的是，这些实施例仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。例如，虽然附图中的第一进风口是设置在壳体的前后两个侧面，但是这种位置关系非一成不变，本领域技术人员可以根据需要对其作出调整，以便适应具体的应用场合。例如，第一进风口还可以设置在壳体的顶面或底面等。
需要说明的是，在本发明的描述中，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
此外，还需要说明的是，在本发明的描述中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域技术人员而言，可根据具体情况理解上述术语在本发明中的具体含义。
为解决现有空调在送风量大时存在送风过冷/过热和噪音大的问题，本发明提出一种壁挂式空调室内机，以便在降低空调室内机的噪音的同时增加引风量，打破传统空调室内机的送风量和降噪不可兼得的僵局，提升用户使用 体验。
首先参照图1至图6，对本发明的壁挂式空调室内机的第一种实施例进行描述。其中，图1为本发明的第一种实施例中壁挂式空调室内机的结构示意图；图2为本发明的第一种实施例中壁挂式空调室内机的爆炸示意图；图3为图1在A-A处的剖视图；图4为本发明的第一种实施例中壁挂式空调室内机去除后罩壳和过滤层后的后视图；图5为本发明的第一种实施例中壁挂式空调室内机的工作原理图，其示出了引风机的吸风过程；图6为本发明的第一种实施例中壁挂式空调室内机的工作原理图，其示出了壁挂式空调室内机的混风过程。
如图1至图3所示，本发明的壁挂式空调室内机(以下简称室内机)主要包括本体1和安装在本体1外的补风模块2，本体1内设置有回风口11、送风口12、热交换器13、贯流风机14(即送风机)、控制模块(图中未示出)等。补风模块2紧贴于室内机的背面安装，其包括壳体21，壳体21上设置有第一进风口211，壳体21内设置有净化组件29、引风机23和连接管25，引风机23具有吸风口和排风口，连接管25的第一端与引风机23连接，第二端与室内机的送风口12连通。补风模块2设置成能够在引风机23的带动下，将室内空气通过第一进风口211引入壳体21，并依次经过净化组件29、引风机23的吸风口、引风机23的排风口230和连接管25后，从连接管25的第二端排出至室内机的送风口12。
参照图5、图6并结合图1至图3，室内机工作时，室内机内部的贯流风机14与引风模块中的引风机23同时以中低速转动，一部分室内空气在贯流风机14的带动下从回风口11进入本体1并穿过热交换器13后，从送风口12送入室内；另一部分室内空气在引风机23的带动下从第一进风口211进入壳体21，并依次经过净化组件29、引风机23的吸风口、引风机23的排风口、连接管25后，通过连接管25的第二端排出室内机的送风口12与穿过热交换器13到达送风口12的空气混合后由送风口12送入室内。
通过上述描述可以看出，本发明的室内机能够在运行时通过引风模块排出的室内空气流与室内机的送风口12送出的风混合，明显改善室内机在大风量时送风过冷/过热的现象，通过同时启动引风机23和贯流风机14同时以中低速运转，大幅度降低室内机在贯流风机14单独高速运行时的噪音。也就是说，本发明解决了现有技术中空调在大风量运行时存在的送风过冷/过热 和噪音大的问题，并且补风模块2结构简单，效果显著，能够在不影响室内机美观性的同时嵌入式的增加送风量，辅助空调进行制冷/制热，适宜大规模推广使用。
参照图2和图4并按照图2所示方位，在一种可能的实施例中，壳体21大致成长方体，其包括前罩壳21a和后罩壳21b，前罩壳21a能够通过卡接、粘接、螺接等方式与后罩壳21b紧固连接。类似地，前罩壳21a能够以相同的方式与本体1连接。净化组件29包括隔板291和过滤层292，隔板291的外缘与壳体21密封连接，该连接使得隔板291将壳体21分隔成相互独立的第一腔室281和第二腔室282，引风机23位于第一腔室，过滤层292位于第二腔室。隔板291上开设有过滤孔293，第一腔室通过该过滤孔293与第二腔室连通。过滤层292以粘接或卡接等方式固定在隔板291左侧设置的凹槽中，固定好后将第二通孔212完全覆盖。过滤层292为可以吸附或分解空气中有害气体的过滤结构，如HEPA过滤器或活性炭滤网等，HEPA过滤器通常包括三层过滤层(初级过滤层、荷电层、静电集尘层)，对直径为0.3微米以下的微粒去除效率可达到99.97％以上。如图4还可知，隔板291的面积(即在前罩壳21a的投影面积)并非与前罩壳21a的面积相等，而是采用明显小于前罩壳21a的面积的方式将引风机23密封在隔板291与前罩壳21a形成的第一腔室内。
参照图2和图3，前罩壳21a和后罩壳21b的前后两个侧面均开设有第一进风口211，第一进风口211处设置有进风格栅，进风格栅能够将室内空气引流至引风机23的前方，也即过滤层292的前方(即图2中过滤层292的左侧，下同)，如前罩壳21a上的进风格栅向左斜置以便将空气向左导流至过滤层292的前方，后罩壳21b上的进风格栅直线设置或稍稍向右斜置以便将空气导流至过滤层292的前方。引风机23优选地为离心风机，其包括蜗壳231、电机232和风扇233，风扇233形成有吸风口，蜗壳231上设置有排风口，组装好后，引风机23的风扇233与过滤孔293大致同轴。前罩壳21a的右侧面下部设置有通孔212，本体1上相对应的位置设置有混风通道15(参见图3)，连接管25的第一端与引风机23的排风口连接，连接管25的第二端穿过通孔212与混风通道15的第一端连接，混风通道15的第二端延伸至室内机的送风口12与送风口12连通。连接管25的第一端与第二端之间的管道具有弧面段，即管道的截面为弧形，连接管25的第二端具有 喇叭口结构。
参照图3并按照图3所示方位，连接管25和混风通道15内还设置有多个引流板27，壳体21和本体1上靠近引流板27的位置还开设有第二进风口221，如第二进风口开设在连接管25和混风通道15的正下方。引流板27能够将附近的室内空气引入连接管25和混风通道15并与来自引风机23的空气流混合后从混风通道15的第二端喷射出。如图3所示，引流板27优选地横截面为上凸的弧形，以便室内空气从引流板27的下方流过该弧形引流板27时能够更好地被引导向混风通道15的第二端流动。
在控制方式上，补风模块2可以单独控制，例如补风模块2内部配置有电控组件(图中未示出)，为补风模块2配置遥控器或使用手机APP等方式对电控组件进行控制，也可以将补风模块2与空调器结合控制，例如在空调遥控器上事先预留用于控制补风模块2内的按键，通过空调遥控器直接、或将主控组件连接至空调器预留接口的方式实现空对补风模块2的控制。
上述设置的优点在于：通过补风模块2的设置，使得室内机在运转时，引风机23和贯流风机14共同运转在中低转速代替贯流风机14的单独高速运转，从而在送风量不变甚至增大的情形下，大幅度减小噪音。经发明人反复试验、观测、分析和比较发现，对于贯流风机14来说，转速越高，噪音越大，当转速增大至最大转速附近时，由于空气流动加快、震动明显增大，室内机产生的噪音会呈几何级的增长。而使贯流风机14和引风机23同时运行在中低速时，引风机23能够为贯流风机14分担送风量，从而在提供相同送风量的前提下，大幅度降低空调器室内机中的风机高速运行时产生的噪音，保证空调的运行性能不变甚至有所提高。通过混风通道15射出的室内空气流与送风口12处的风相混合，使得空调的出风更佳柔和，避免空调室内机的送风过冷/过热引起的空调病等诸多问题。净化组件29的设置，使得空调室内机在运行时还能够对室内空气进行循环净化和过滤，有效过滤空气中的pm2.5等浮游颗粒，提高室内空气洁净度。引流板27的设置，充分利用了文丘里效应，当空气流从连接管25和混风通道15内流过时，气流的气压大，气流的快速流动会使引流板27附近产生负压，室内气流就会顺着引流板27被吸入射流通道与空气流平稳混合，从而能够在保持引风机23和贯流风机14转速不变的前提下，进一步增大风量，或在保证送风量的前提下，使得引风机23和贯流风机14的转速能够进一步降低，进一步降低噪音。引 流板27截面为弧形的设置方式，则减少了引流过程中的沿程损失以及与射流通道内空气流混合时的摩擦损失，有效地提升了进风量。
此外，连接管25的管道具有弧面段以及第二端具有喇叭口的设置方式，使得引风机23排气口排出的气流能够顺利过渡至射流通道内，减少沿程损失。进风格栅能够将室内空气引流至引风机23的吸风口的设置方式，能够使引风机23吸风更加顺利，增加吸风量，进而增大送风量。隔板291采用明显小于前罩壳21a面积的方式将引风机23密封在隔板291与前罩壳21a形成的第一腔室内，还使得由前罩壳21a上的第一进风口211进入壳体21的室内空气也能被导流至引风机23前方，保证过滤效果。并且，由于补风模块2能够设置于现有的壁挂式空调室内机的本体1外，这还使得本发明的补风模块2能够单独出售，用户无需花费更高的成本购买一台新的低噪音空调，而是只花费很小的购买成本和改造成本即可将补风模块2安装于空调室内机的本体1外，大大拓展了本发明的应用场景，适宜大规模推广使用。
当然，上述实施例仅仅用来阐述本发明的原理，并非旨在于限制本发明的保护范围，在不偏离本发明原理的条件下，本领域技术人员可以对上述实施例进行调整，以便本发明能够应用于更加具体的应用场景。例如，引流板27的截面可以设置为其他直线或弧线，只要该形状能够减小引流过程中的沿程损失即可；再如，引流板27还可以只设置在连接管25内或混风通道15内，相应地只在壳体21上或本体1上开设第二进风口；再如，补风模块2也可以不设置连接管25，而是将引风机23的排风口直接与混风通道15连通；再如，连接管25可以不具有弧面段，而是采用直角段代替，连接管25的第二端也可以不设置喇叭口结构等；再如，引风机23还可以采用其他如轴流风机或混流风机等；再如，隔板291的面积当然也可以采用与前罩壳21a的面积大致相等的设置方式，并卡接在前罩壳21a与后罩壳21b之间，将壳体21平分为两个腔室。
下面参照图7和图8，对本发明的第二种实施例中壁挂式空调室内机进行描述。其中，图7为本发明的第二种实施例中壁挂式空调室内机的爆炸示意图；图8为本发明的第二种实施例中壁挂式空调室内机的工作原理图，其示出了引风机的吸风过程。如图7和图8所示，在另一种可能的实施例中，在其他设置方式不变的条件下，还可以在壳体21内设置两个引风机23和两个连接管25，对应地，隔板291上设置两个过滤孔293，壳体21上设置两 个通孔212，本体1上开设两个混风通道15。其中，引风机23对称的设置于壳体21内。这样一来，在室内机工作时，两个引风机23与贯流风机14能够以更小的转速实现相同的送风量，从而进一步减小送风量大时室内机产生的噪音，改善用户体验。
下面参照图9，对本发明的壁挂式空调室内机的控制方法进行阐述。其中，图9为本发明的壁挂式空调室内机的控制方法的流程图。
如图9所示，本发明的空调室内机的控制方法主要包括以下步骤：
S100、获取室内机的设定风速。例如，通过在用户选择空调的运行模式时从设定的参数中获取设定风速，或在室内机的风速设置为自动风速时，自动获取当前的运行风速作为设定风速；
S200、在设定风速大于风速阈值时，控制引风机23和贯流风机14分别以第一设定转速和第二设定速度同时运行。例如，风速阈值可以为高速或贯流风机14在单独运行时高转速对应的风速等，在设定风速大于风速阈值时，室内机的控制模块控制引风机23和贯流风机14同时以中低速启动运行，以降低室内机产生的噪音。本领域技术人员均可以理解，低速低于中速，中速低于高速。换言之，当室内机的设定风速大于一预设的风速阈值时，室内机的控制模块控制引风机23和贯流风机14同时以小于该风速阈值的第一设定转速和第二设定速度同时运行。
其中，第一设定速度和第二设定速度可以相同，也可以基于试验等方式进行设置，如第一设定转速和第二设定转速之间成一定的比例关系，以确保引风机23和贯流风机14同时开启时的噪音最小。显然，风速阈值还可以根据不同机型和使用环境进行调整，并且该调整应当主要基于贯流风机14单独运转时的噪音值进行。
最后需要说明的是，虽然本发明的空调室内机是结合壁挂式空调室内机进行描述的，但是显然本发明的补风模块还可以应用于其他空调室内机，如柜式空调室内机等。
至此，已经结合附图所示的优选实施例描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施例。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种空调室内机，包括本体，所述本体设置有回风口和送风口，所述本体内设置有送风机，其中，所述空调室内机还包括补风模块，所述补风模块包括壳体，所述壳体上设置有第一进风口，所述壳体内设置有净化组件和引风机，所述补风模块设置成能够在所述引风机的带动下，将室内空气通过所述第一进风口引入所述壳体并穿过所述净化组件后，通过所述引风机的排风口排出至所述送风口，并使所述室内空气与所述送风口排出的风相混合。
  2. 根据权利要求1所述的空调室内机，其中，所述补风模块还包括连接管，所述壳体上设置有通孔，所述本体上设置有混风通道，所述连接管的第一端与所述引风机的排风口连接，所述连接管的第二端穿过所述通孔与所述混风通道的第一端连接，所述混风通道的第二端与所述送风口连通。
  3. 根据权利要求2所述的空调室内机，其中，所述连接管具有弧面段；并且/或者所述连接管的第二端具有喇叭口结构。
  4. 根据权利要求2或3所述的空调室内机，其中，所述连接管和/或所述混风通道设置有引流板，所述引流板能够在所述引风机工作时将所述连接管和/或所述混风通道附近的空气引入所述连接管和/或所述混风通道。
  5. 根据权利要求4所述的空调室内机，其中，所述引流板的截面为弧形，所述弧形能够将所述附近的空气向所述混风通道的第二端的方向引流。
  6. 根据权利要求4所述的空调室内机，其中，所述空调室内机上靠近所述引流板的位置还开设有第二进风口。
  7. 根据权利要求1所述的空调室内机，其中，所述净化组件包括隔板和过滤层，所述隔板将所述壳体分隔为第一腔室和第二腔室，所述引风机位于所述第一腔室，所述过滤层位于所述第二腔室，所述隔板上开设有过滤孔，所述第一腔室和第二腔室通过所述过滤孔连通。
  8. 根据权利要求7所述的空调室内机，其中，所述隔板与所述壳体密封连接。
  9. 根据权利要求1所述的空调室内机，其中，所述空调室内机为壁挂式空调室内机，所述补风模块以可拆卸的方式设置于所述本体的背面。
  10. 一种空调室内机的控制方法，其中，所述空调室内机为根据权利要求1至9中任一项所述的空调室内机，所述控制方法包括：
    获取所述空调室内机的设定风速；
    在所述设定风速大于风速阈值时，控制所述引风机和所述送风机分别以第一设定转速和第二设定速度同时运行。
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