WO2020147313A1 - 吊顶式空调室内机 - Google Patents

吊顶式空调室内机 Download PDF

Info

Publication number
WO2020147313A1
WO2020147313A1 PCT/CN2019/103086 CN2019103086W WO2020147313A1 WO 2020147313 A1 WO2020147313 A1 WO 2020147313A1 CN 2019103086 W CN2019103086 W CN 2019103086W WO 2020147313 A1 WO2020147313 A1 WO 2020147313A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
outlet
indoor unit
ceiling
conditioner indoor
Prior art date
Application number
PCT/CN2019/103086
Other languages
English (en)
French (fr)
Inventor
单翠云
王永涛
刘博�
李英舒
张蕾
Original Assignee
青岛海尔空调器有限总公司
海尔智家股份有限公司
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 青岛海尔空调器有限总公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2020147313A1 publication Critical patent/WO2020147313A1/zh

Links

Images

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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • 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
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1413—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using more than one tilting member, e.g. with several pivoting blades
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression

Definitions

  • the invention relates to the technical field of air conditioning, in particular to a ceiling-mounted air conditioner indoor unit.
  • the existing air-conditioning indoor unit basically uses a cross-flow fan, and the air outlet direction is straight forward. Although there are air deflectors to guide the air left and right, and the swing blades to guide the air up and down, it is limited by the volute structure and the air supply angle is usually Less than 80°, the air supply angle is usually less than 100°. It can be seen that the existing indoor units have fewer air supply directions, and the air supply range is very limited.
  • the current cross-flow fan is mainly forward-facing blades, and the blades periodically impact the passing airflow, generating obvious rotating noise.
  • the volute cooperates with the fan to achieve the air supply effect, and the front and rear volute tongues will also impact the airflow and generate strong turbulent noise. It is difficult to significantly improve the noise quality under the existing technology.
  • the purpose of the present invention is to solve at least one of the above-mentioned shortcomings in the prior art, and provide a ceiling-mounted air conditioner indoor unit to meet the diversified needs of users for the air conditioner indoor unit, reduce air supply noise, and improve noise quality.
  • a further objective of the present invention is to realize multiple air supply modes, including a strong air supply mode and a windless air supply mode, to meet the various air supply requirements of users.
  • the present invention provides a ceiling-mounted air conditioner indoor unit, which includes:
  • the shell has at least one air inlet and at least one air outlet;
  • the heat exchanger is arranged in the shell for heat exchange with the air flowing through it;
  • the laminar flow fan is arranged in the casing and includes a plurality of annular disks arranged in parallel and spaced apart and fixedly connected to each other.
  • the plurality of annular disks are driven to rotate, air is sucked into the cavity on the radial inner side from one axial end.
  • the air boundary layer on the surface of the annular disk is driven by the annular disk to rotate in the radial direction from the inside to the outside due to the viscous effect to form laminar wind, so as to promote the air to flow from the air inlet through the heat exchanger, and then to the air outlet to return Indoor;
  • Each air outlet is provided with two air deflectors that are rotated in opposite directions, and each air deflector is provided with a plurality of ventilation micro holes running through its thickness direction.
  • the two air deflectors can rotate away from each other to open the air outlet In order to use the channel formed between the two to guide the direction of the wind, or turn to the position where the air outlet is closed to make the air flow blow out through the multiple ventilation holes.
  • At least one air outlet is arranged on the side of the housing, and the length direction of each air outlet is arranged along a horizontal plane; the two wind guide plates of each air outlet are respectively fixed in the length direction of the air outlet.
  • the rotation axis of the upper wind deflector is located at the upper end, and the rotation axis of the lower wind deflector is located at the lower end;
  • the wind deflector is arranged in a matrix.
  • the opening rate of each wind deflector is between 25% and 90%.
  • the ceiling-mounted air conditioner indoor unit further includes: an air duct component arranged in the housing, which is provided with at least one air duct corresponding to the at least one air outlet for guiding the heat exchange wind to each air outlet
  • the air duct is divided into an inlet section and an outlet section along the flow direction of the outlet air flow, and the flow cross section at the inlet section is tapered along the flow direction of the outlet air flow, and the flow at the outlet section The cross-section remains unchanged along the flow direction of the outlet air flow.
  • the number of the air inlet is one, and it is arranged on the bottom surface of the casing; and the rotation axis of the laminar flow fan extends in the vertical direction, and the air flowing in from the air inlet is sucked from the bottom of the axial direction during operation, and the air It blows radially outward.
  • the heat exchanger has an annular plate shape or a semi-annular plate shape with an axis extending in a vertical direction, and is arranged around the laminar flow fan on the radially outer side of the laminar flow fan.
  • the laminar flow fan further includes: a circular disc, located at the non-intake axial end of the laminar flow fan, and arranged in parallel and spaced apart from the annular disc at this end and indirectly fixedly connected with the circular disc center inward
  • the recess forms an accommodating cavity; and the motor, which is directly or indirectly fixed to the housing and extends into the accommodating cavity, and its rotating shaft is connected to the circular disc to drive the circular disc to rotate, thereby driving a plurality of annular discs to rotate .
  • the air duct component is in the shape of a shell with an open bottom, and an air duct is formed on its side; the air duct component is buckled on the bottom of the casing to cover the heat exchanger and the laminar flow fan inside.
  • the ceiling-mounted air conditioner indoor unit further includes: a bracket, which includes a horizontally arranged support ring and a plurality of connecting arms extending upward from the edge of the support ring, and the plurality of connecting arms are detachably connected to the air duct component; and
  • the motor is installed on the upper side of the supporting ring to be supported by it, and the rotating shaft of the motor extends downward from the center of the supporting ring.
  • the air inlet is circular;
  • the bottom wall of the housing around the air inlet is a drainage surface extending radially outward from the edge of the air inlet and at the same time gradually inclined downward, and the drainage surface is a rotating surface coaxial with the air inlet ;
  • the ceiling-mounted air conditioner indoor unit also includes a deflector, which is arranged at the air inlet, and its outer peripheral surface is a rotating surface that expands radially outward from top to bottom and is coaxial with the air inlet for guiding indoor air It flows to the air inlet through the gap between the outer circumferential surface of the flow guide and the bottom surface of the casing.
  • the ceiling-mounted air conditioner indoor unit of the present invention is hoisted on the roof, and the entire side of the shell is exposed. In this way, multiple air outlets can be arranged on the side, so as to achieve air flow from two sides, three sides, four sides, and even 360° circumferential direction. , The air supply range is extremely large.
  • the ceiling-mounted air conditioner indoor unit adopts a laminar flow fan, which is based on the principle of laminar flow to achieve ring-shaped air output without dead ends, which is convenient for realizing multi-directional air supply of the indoor unit.
  • the laminar flow fan uses the viscosity of the air boundary layer to do work.
  • the annular disk is basically parallel to the flow direction of the airflow, and will not strongly disturb the impact airflow and generate violent vortexes, which greatly reduces the noise and excellent noise quality, which improves the user experience.
  • two split wind deflectors with ventilating micro holes are arranged at each air outlet.
  • the two wind deflectors open the air outlet, the airflow from the air outlet smoothly blows into the channel defined between the two wind deflectors, and then blows into the room.
  • the two air guide plates are equivalent to the extension of the air outlet, which extends the fluid flow channel, so that the air supply distance is longer and has a noise reduction effect.
  • the interval between the two wind deflectors can be changed by adjusting the opening angles of the two wind deflectors, thereby changing the size of the air outlet section, thereby changing the air volume and wind speed.
  • the present invention uses the air duct to straighten out the airflow before discharging it to the air outlet, reducing the vortex generated at the air outlet, reducing the vortex noise, and reducing the total noise value.
  • the setting of the air duct also makes the air flow smoother, reduces power consumption, increases air volume, and improves the efficiency of the air conditioning system.
  • the tapered design of the flow cross section at the entrance of the air duct can effectively increase the wind speed and increase the air supply distance. After increasing the speed of the tapered cross section of the inlet section, the air flow enters the outlet section with the constant flow cross section for steady flow, and the direction of the air flow can be further adjusted to make the air flow more stable and smooth.
  • the ceiling-mounted air conditioner indoor unit of the present invention wind flows from the gap between the air guide and the casing to the air inlet. Compared with some structures in which the wind enters the shell directly and vertically upwards from the bottom of the shell, guided by the air guide, the wind direction is close to the horizontal direction, so that the air can enter the laminar flow fan more smoothly, making the layer Flow fan energy consumption and noise are reduced.
  • the design of the air guide also makes the bottom appearance of the air conditioner indoor unit more beautiful.
  • Figure 1 is a schematic structural diagram of a ceiling-mounted air conditioner indoor unit according to an embodiment of the present invention
  • Figure 2 is a schematic exploded view of the ceiling-mounted air conditioner indoor unit shown in Figure 1;
  • FIG. 3 is a cross-sectional view of the ceiling-mounted air conditioner indoor unit shown in FIG. 1 along a vertical plane;
  • Figure 4 is a schematic diagram of the top wall and bottom wall profile of the air duct in Figure 3;
  • Figure 5 is a schematic enlarged view of the fixing frame in Figure 2;
  • Figure 6 is a schematic view of the bottom view of the laminar flow fan
  • Figure 7 is a schematic diagram of the air supply principle of the laminar flow fan
  • Fig. 8 is a schematic diagram of air circulation of the laminar flow fan of the embodiment shown in Fig. 1;
  • FIG. 9 is a schematic diagram of air circulation of a laminar flow fan according to another embodiment of the present invention.
  • FIG. 10 is a schematic diagram of air circulation of a laminar flow fan according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the relationship between the gradual pitch of the multiple annular disks of the laminar flow fan shown in FIG. 10 and the air volume and pressure.
  • FIGS. 1 to 11 the orientation or positional relationship indicated by “front”, “rear”, “upper”, “lower”, “top”, “bottom”, “inner”, “outer”, and “horizontal” are based on the drawings
  • the orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention .
  • the ceiling-mounted air conditioner indoor unit and the air conditioner outdoor unit (not shown) of the embodiment of the present invention form a vapor compression refrigeration cycle system to realize cooling/heating of the indoor environment.
  • Fig. 1 is a schematic structural diagram of a ceiling-mounted air conditioner indoor unit according to an embodiment of the present invention
  • Fig. 2 is a schematic exploded view of the ceiling-mounted air conditioner indoor unit shown in Fig. 1
  • Fig. 3 is a cross-sectional view of Fig. 1 along a vertical plane A cross-sectional view of the ceiling-mounted air conditioner indoor unit.
  • the ceiling-mounted air conditioner indoor unit may generally include a housing 100, a heat exchanger 400, and a laminar flow fan 300.
  • the ceiling-mounted air conditioner indoor unit is hung under the indoor roof as a whole, and the top of the housing 100 is used to connect to the roof.
  • At least one air inlet 110 and at least one air outlet 120 are opened on the housing 100.
  • the air outlet 120 may be provided on the side of the housing 100.
  • the air inlet 110 may be located on the bottom surface of the housing 100 as shown in FIGS. 1 to 3, and may also be located on the side surface of the housing 100.
  • the number of air outlets 120 can be set as required. For example, if the indoor unit is installed on the roof close to the side wall, only one air outlet can be provided. If the indoor unit is installed far away from the side wall, such as in the center of the roof, multiple outlets with different orientations can be installed, such as two, three, four, etc., so as to achieve two sides, three sides, and four sides. Multi-directional air supply effect such as air outlet.
  • the shell can be circular, and air outlets are opened at all angles in the circumferential direction for air outlet, so as to realize 360° omnidirectional air supply.
  • the heat exchanger 400 is arranged in the shell 100. It can be an evaporator of a vapor compression refrigeration cycle, which is used to exchange heat with the air flowing through it to form heat exchange air (when cooling, the heat exchange air is cold air, heating When the heat exchange air is hot air).
  • the laminar flow fan 300 is arranged in the housing 100, which includes annular disks 10 arranged in parallel and spaced apart and fixedly connected to each other.
  • the air boundary layer on the surface of the annular disk 10 is driven by the annular disk 10 to rotate in the radial direction from the inside to the outside due to the viscous effect to form laminar wind, so as to promote the air to flow from the air inlet 110 through the heat exchanger 400 to form heat exchange wind, and then flow to The air outlet 120 can return to the room to realize cooling/heating of the room.
  • each air outlet 120 is provided with two wind deflectors 600.
  • the two wind deflectors 600 can be rotated, and they are arranged in opposite directions (similar to two opposite door bodies).
  • the two air guide plates 600 can be rotated away from each other to a position where the air outlet 120 is opened, or rotated opposite to a position where the air outlet 120 is closed.
  • the airflow from the outlet air blows into the room from the channel formed between the two air guide plates 600 to guide the wind direction by the two air guide plates 600.
  • the passage between the two air guide plates is equivalent to the extension of the air outlet, which extends the fluid flow passage, makes the air supply distance farther and has a noise reduction effect.
  • the two air guide plates 600 can be in a parallel state.
  • the two wind deflectors are equivalent to dampers.
  • the two wind deflectors can be gradually approached from the inside to the outside, so that the internal passage is gradually reduced to reduce the air volume and increase the wind speed.
  • the two wind deflectors can also be gradually moved away from the inside to the outside to gradually expand the internal passages to reduce the wind speed.
  • the two wind deflectors 600 can also swing back and forth to swing the wind.
  • Each wind deflector 600 is provided with a plurality of ventilation holes 610 penetrating the wind deflector 600 along its own thickness direction.
  • a plurality of ventilation holes 610 may be arranged in a matrix on the wind deflector 600 to make the arrangement more uniform. As shown in Figure 1, the wind deflector is arranged in 3 rows from top to bottom, with 34 ventilation holes 610 in each row.
  • the diameter of the ventilation holes 610 should be small enough, for example, set between 1 and 10 mm to achieve the effect of breeze.
  • the opening rate can be set between 25% and 90% to have both the breeze effect and the air volume requirement. For example, 25%, 30%, 50%, 60%, 70%, 80%, 90%, etc.
  • the open area ratio refers to the ratio of the total area of all the ventilation holes 610 on the air deflector 600 to the surface area of one side surface (including the open portion and the non-opened portion) of the air deflector 600.
  • each air outlet 120 can be arranged along a horizontal plane, and the corresponding two air guide plates 600 can be arranged in the vertical direction.
  • the two ends of each wind guide plate 600 in the longitudinal direction are respectively fixed to the housing 100 at the two ends in the longitudinal direction of the air outlet 120.
  • the rotation axis of the wind deflector 600 extends along its length, so as to realize upper and lower wind guidance.
  • the rotation axis of the upper air guide plate 600 is located at its upper end, and the rotation axis of the lower air guide plate 600 is located at its lower end, so that the air outlet 120 is opened/closed in opposite directions.
  • Each air outlet 120 has the following two air supply modes.
  • the air deflector 600 opens the air outlet 120, and the airflow from the air outlet 120 smoothly blows into the channel between the two air deflectors 600, and the direction of the wind is guided by the two air deflectors.
  • the ceiling-mounted air conditioner indoor unit further includes an air duct component 180.
  • the air duct component 180 is disposed on the housing 100 and includes at least one air duct 182.
  • the number of air ducts 182 is the same as the number of air outlets 120 and corresponds to each other.
  • the function of the air duct 182 is to guide the heat exchange wind to the corresponding air outlet 120.
  • Each air duct 182 is provided with a baffle or a plurality of baffles arranged in an up-and-down direction to separate the inner space of the air duct 182 up and down.
  • Each deflector extends in a horizontal direction, specifically parallel to the length direction of the air outlet.
  • the air duct 182 straightens out the air flow and then discharges it to the air outlet 120, which reduces the vortex generated at the air outlet 120, reduces the vortex noise, and reduces the total noise value. After diversion, the airflow of the air outlet is smoother, power consumption is reduced, air volume is increased, and the efficiency of the air supply system is improved.
  • the baffle divides the internal space of the air duct into multiple airflow channels, which can enhance the guiding effect of the airflow (especially the airflow in the middle of the air channel away from the wall of the air channel), so as to reduce the wind resistance, and the airflow is uniform. Mixed with natural wind, bring a good experience.
  • the air duct 182 is divided into an inlet section and an outlet section along the flow direction of the air flow, and the flow cross section at the inlet section thereof is gradually reduced in the flow direction of the hot outlet air flow. That is, when the airflow enters the process of flowing outward from the air duct 182, the air duct 182 becomes narrower and narrower.
  • the flow cross section of the air duct 182 at its outlet section remains unchanged along the flow direction of the hot air flow. That is, just before the airflow flows out of the air duct 182, the width of the air duct 182 remains unchanged.
  • the tapered design of the flow cross section of the inlet section of the air duct 182 can effectively increase the wind speed and increase the air supply distance. After the outlet air flow increases speed through the tapered cross section of the inlet section, it enters the outlet section with the same cross section for steady flow, and the direction of the air flow can be further adjusted to make the air flow more stable and smooth.
  • Figure 4 is a schematic diagram of the top wall and bottom wall profile of the air duct in Figure 3.
  • the shape of the top wall and the bottom wall of the air duct 182 is refined to make its shape better meet the original design intention, that is, to obtain better drainage, flow stabilization and vortex prevention effects.
  • the two walls in the width direction of the air duct 182 are symmetrical with respect to the central vertical plane in the width direction, as shown in FIG. 2. Therefore, in this embodiment, the change of the cross-section area of the air duct is realized by the change of the profile of the top wall and the bottom wall of the air duct.
  • the section where the two points BR are located is the entrance section of the air duct 182, and the section where the two points GJ are located is the exit section of the air duct 182.
  • the space area enclosed by BRKF is the inlet section of the air duct 182, and the space area enclosed by FKJG is the outlet section of the air duct 182.
  • the top wall of the air duct 182 is successively a plurality of sections connected tangentially. Also, each section extends in the direction toward the outlet of the air duct 182 and at the same time gradually slopes downward.
  • the multiple segments include: a first arc-shaped segment BC, a second arc-shaped segment CD, a first straight-line segment DE, a third arc-shaped segment EF, and a second straight-line segment FG.
  • the centers of the first arc-shaped segment BC and the second arc-shaped segment CD are both located inside the air duct 182, and the diameter of the second arc-shaped segment CD is larger than the diameter of the first arc-shaped segment BC.
  • the dotted circle C1 in the figure is the circle where the first arc segment BC is located.
  • Circle C2 is the circle where the second arc segment CD is located.
  • the center of the third arc segment EF is located outside the air duct 182.
  • the profile of the top wall of the air duct is set so that the airflow near the top wall first slowly enters the BC section, after the transition of the CD section, the section is rapidly contracted in the DE section to accelerate, and then the EF section is turned to transition to the gentle FG section Achieve steady flow blowing.
  • the bottom wall of the air duct 182 successively includes a plurality of sections connected tangentially, which are the third straight section RQ, the fourth arc section QP, the fourth straight section PN, and the fifth arc.
  • the third straight line segment RQ extends horizontally from the inlet to the outlet of the air duct.
  • the center of the fourth arc-shaped segment QP is located inside the air duct 182 and gradually extends upward from the end of the third straight-line segment RQ.
  • the fourth straight section PN extends upward from the top end of the fourth arc section QP.
  • the center of the fifth arc section NM is located outside the air duct 182 and extends upward from the top end of the fourth straight section PN.
  • the center of the sixth arc-shaped section ML is located outside the air duct 182 and has a diameter smaller than that of the fifth arc-shaped section NM, and extends upward from the top of the fifth arc-shaped section NM.
  • the center of the seventh arc-shaped section LK is located outside the air duct 182 and has a diameter smaller than that of the sixth arc-shaped section ML, and extends from the top of the sixth arc ML upward and then toward the outlet of the air duct 182.
  • the fifth straight section KJ extends from the end of the seventh arc-shaped section LK toward the outlet of the air duct 182 and gradually extends downward, and LK may be parallel to FG.
  • the dotted circle C6 is the circle where the fifth arc-shaped segment NM is located, and the dotted circle C5 is the circle where the sixth arc-shaped segment ML is located.
  • the dotted circle C4 is the circle where the seventh arc segment LK is located.
  • the profile of the bottom wall of the air duct is set so that the airflow near the bottom wall slowly enters the RQ section, and after a smooth transition of the QP section, it enters the PN, NM, and ML sections.
  • the section is rapidly contracted in the three sections to accelerate, and then passes through the LK The turning of the section, the transition to the gentle KJ section to achieve steady flow blowing.
  • the number of the air inlet 110 is one, and it is provided on the bottom surface of the housing 100.
  • An optional structure of the housing 100 is shown in FIG. 2, which includes a square bottom shell 150 with an open upper side and a square top cover 130 with an open lower side, which are buckled together to define an accommodation space.
  • the side of the bottom shell 150 is provided with the aforementioned air outlet 120.
  • the number of the air outlets 120 may be three, and of the four sides of the bottom shell 150, three sides are provided with an air outlet 120 each.
  • An air inlet 110 is provided on the bottom surface of the bottom shell 150.
  • the air duct component 180 may be in the shape of a shell with an open bottom, and the aforementioned air duct 182 is formed on its side.
  • the air duct component 180 is buckled on the bottom of the casing 100 to cover the heat exchanger 400 and the laminar flow fan 300 in it, so that the heat exchange wind can only flow to the air outlet 120 through the air duct 182 to blow out more smoothly.
  • the heat exchanger 400 is preferably in the shape of an annular plate or a semi-annular plate (a circular ring, a semi-circular ring, a square ring, an irregular ring or the U-shaped ring as shown in FIG. 2) with an axis extending in the vertical direction. It is arranged around the laminar flow fan 300 on the radially outer side of the laminar flow fan 300, which eliminates the need to arrange it above or below the laminar flow fan 300, which can save the internal space of the ceiling-mounted air conditioner indoor unit, and make the structure more compact and integrated. The machine is smaller.
  • the heat exchanger 400 surrounds the laminar flow fan 300, so that the airflow of the laminar flow fan 300 can pass through the surface of the heat exchanger 400 more quickly and comprehensively, so that the heat exchange and heat exchange efficiency of the heat exchanger 400 are greatly improved.
  • FIG. 6 is a schematic view from the bottom of the laminar flow fan 3.
  • the laminar flow fan 300 may further include a circular disk 30 and a motor 20.
  • the circular disc 30 is located at the non-intake axial end of the laminar flow fan 300 (the embodiment shown in the figure is the upper end), and is spaced in parallel with the annular disc 10 (that is, the uppermost annular disc) at this end and indirectly Fixed connection.
  • the center of the circular disk 30 is recessed inward (ie downward) to form a receiving cavity 31.
  • the motor 20 extends into the accommodating cavity 31, and its rotating shaft 21 is connected to the circular disc 30 so as to drive the circular disc 30 to rotate, thereby driving a plurality of annular discs 10 to rotate.
  • the laminar flow fan 300 may further include a plurality of connecting rods 40 extending vertically. One end of the connecting rod 40 is fixed to the circular disc 30, and then extends vertically to penetrate through the plurality of annular discs 10, and is fixed to each of the annular discs 10 to realize the plurality of annular discs 10 and the circular disc 30 The mutual fixation.
  • the laminar flow fan 300 has an axial air inlet and a radial air outlet structure. The air is sucked in the axial direction, and the air is discharged radially so as to blow the wind horizontally toward each air outlet 120.
  • the laminar flow fan 300 is based on the principle of laminar flow, and realizes an annular air outlet without dead ends.
  • the laminar flow fan 300 uses the viscosity of the air boundary layer to perform work, and the annular disk 10 is basically parallel to the flow direction of the airflow, and will not strongly disturb the impact airflow and generate violent vortices, which greatly reduces the noise and excellent noise quality, which significantly improves the user experience .
  • the more specific principle and structure of the laminar flow fan 300 will be described in more detail later.
  • a pallet 800 is also fixedly installed in the housing 100.
  • the pallet 800 is installed on the bottom side of the inside of the housing 100.
  • the heat exchanger 400 is installed on the pallet 800 to be supported by it.
  • the periphery of the pallet 800 is in sealing connection with the inner wall of the housing 100, and a vent 801 opposite to the air inlet 110 is opened in the center to allow the inlet air flow to flow to the bottom of the laminar fan 300 through the vent 801.
  • a vent 801 opposite to the air inlet 110 is opened in the center to allow the inlet air flow to flow to the bottom of the laminar fan 300 through the vent 801.
  • FIG. 3 after the inlet air flows through the vent 801, it is all sucked into the laminar flow fan 300, and will not flow directly to the heat exchanger 400 without the action of the laminar flow fan 300, thereby affecting the heat exchange efficiency.
  • Fig. 5 is a schematic enlarged view of the bracket in Fig. 2.
  • the ceiling-mounted air conditioner indoor unit includes a bracket 50.
  • the bracket 50 includes a horizontally arranged backing ring 51 and a plurality of connecting arms 52 (at least two, such as three shown in FIG. 5).
  • the backing ring 51 has a hollow ring shape.
  • the connecting arm 52 extends upward from the edge of the backing ring 51, and the upper end of the connecting arm 52 is detachably connected to the air duct member 180, specifically, a threaded connection can be adopted.
  • the motor 20 is placed on the upper side of the backing ring 51 to be supported by it, and the rotating shaft 21 of the motor 20 extends downward from the center of the backing ring 51. In this way, the backing ring 51 bears the weight of the entire laminar flow fan 300 by supporting the motor 20.
  • the air inlet 110 is circular, and its central axis is the X axis.
  • the bottom wall of the housing 100 around the air inlet 110 is a drainage surface 140 that extends radially outward from the edge of the air inlet 110 and at the same time gradually extends downward and inclined.
  • the drainage surface 140 is a rotating surface coaxial with the air inlet 110.
  • the air guide 200 is arranged at the air inlet 110, and its outer circumferential surface 201 is a rotating surface that expands radially outward from top to bottom and is coaxial with the air inlet 110, and is used to guide indoor air through the outer circumferential surface of the air guide 200
  • the gap between 201 and the bottom surface of the housing 100 flows toward the air inlet 110.
  • the embodiment of the present invention is provided with a deflector 200 so that the wind flows from the gap between the deflector 200 and the bottom surface of the housing 100 to the air inlet. 110, make the direction of the wind close to the horizontal direction, so that the air enters the laminar flow fan 300 more smoothly (because the annular disc 10 of the laminar flow fan is horizontally extended), so that the energy consumption and noise of the laminar flow fan 300 are different reduce.
  • the arrangement of the air deflector 200 also makes the appearance of the bottom of the ceiling-mounted indoor unit (the bottom of which is mainly facing the user) more beautiful, and prevents the complicated air inlet grille at the bottom of the housing 100 from affecting the appearance.
  • FIG 7 is a schematic diagram of the air supply principle of a laminar flow fan.
  • the air supply principle of the laminar flow fan is mainly derived from the "Tesla turbine” discovered by Nikola Tesla. Tesla turbines mainly use the "laminar boundary layer effect” or “viscosity effect” of fluids to achieve the purpose of doing work on the "turbine disk”.
  • the annular disc 10 rotates at a high speed, and the air in the interval between the annular discs 10 contacts and moves with each other, and the air boundary layer 13 near the surface of each annular disc 10 is rotated by the viscous shearing force ⁇ . 10 drives the rotation from inside to outside to form laminar wind.
  • Fig. 8 is a schematic diagram of air circulation of the laminar flow fan of the embodiment shown in Fig. 1.
  • an air inlet channel 11 is formed in the center of the annular disk 10 to allow outside air to enter.
  • a plurality of air outlet channels 12 are formed in the gaps between the plurality of annular discs 10 for the laminar air to blow out.
  • the process of the air boundary layer 13 rotating from inside to outside to form laminar wind is centrifugal movement, so the speed when leaving the air outlet channel 12 is greater than the speed when entering the air inlet channel 11.
  • Fig. 9 is a schematic diagram of air circulation of a laminar flow fan according to another embodiment of the present invention.
  • the inner diameters of the annular disks of the laminar flow fan 300 may be different.
  • the inner diameters of the plurality of annular discs 10 are sequentially reduced. In other words, along the direction in which the airflow flows in the air inlet channel 11, the inner diameter of the annular disk 10 gradually decreases.
  • FIG. 10 is a schematic diagram of air circulation of a laminar flow fan according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the relationship between the gradual pitch of a plurality of annular disks of the laminar flow fan shown in FIG. 10 and the air volume and pressure.
  • the spacing between adjacent annular disks of the laminar flow fan 300 may be different.
  • the air inlet direction along the axial direction of the laminar flow fan 300 can be made to gradually increase the distance between two adjacent annular disks 10.
  • the distance between each adjacent two annular disks gradually increases.
  • the horizontal axis Plate distance increase (shrinking, uniform, expanding) in Fig. 11 refers to the increase in the change in the distance between two adjacent annular disks 10 in the direction from bottom to top (negative value when shrinking, consistent When it is zero, it is a positive value when expanding), the left vertical axis Mass flow rate refers to the air volume, the right vertical axis Pressure rise refers to the wind pressure (wind pressure increase), and the wind pressure refers to the laminar flow fan
  • the pressure difference between the air outlet channel 12 and the inlet of the air inlet channel 11 (the increase in wind pressure at the inlet of the air outlet channel 12 relative to the inlet of the air inlet channel 11).
  • the amount of change in the distance between two adjacent annular disks 10 is the same, that is, the increase or decrease of the distance between two adjacent annular disks 10 is the same.
  • FIG. 11 shows that when the outer diameter, inner diameter, number, thickness, and rotation speed of the motor 20 of the annular disc 10 of the laminar flow fan remain unchanged, the pitch of the plurality of annular discs 10 gradually changes with the air volume and pressure. Relationship diagram. When the above-mentioned parameters remain unchanged, among the plurality of annular discs 10, the distance between each two adjacent annular discs 10 changes gradually, which has a greater influence on the air volume, and has little influence on the wind pressure. .
  • the axis of abscissa indicates the change in the distance between two adjacent annular discs 10 along the axial direction of air intake, it means that the aforementioned distance is gradually increasing; In the wind direction, when the amount of change in the distance between two adjacent annular disks 10 is negative, it indicates that the aforementioned distance is gradually reduced.
  • the amount of change in the distance between two adjacent annular disks 10 can be made the same. It can be seen from Fig. 11 that the air volume and pressure of the laminar flow fan are greatly improved when the distance between each two adjacent annular disks 10 in the plurality of annular disks 10 is -1mm, 1mm and 2mm. .
  • the distance between every two adjacent annular disks 10 of the plurality of annular disks 10 is preferable to set the distance between every two adjacent annular disks 10 of the plurality of annular disks 10 to gradually increase along the axial air inlet direction.
  • the outer diameter of the ring disc 10 is 175mm
  • the inner diameter of the ring disc 10 is 115mm
  • the number of the ring disc 10 is 8
  • the thickness of the ring disc 10 is 2mm
  • the rotation speed of the motor 20 is 1000rpm (revolutions per minute).
  • the distance between two adjacent annular disks 10 among the eight annular disks 10 can be set in order along the axial air inlet direction as 13.75 mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm, 19.75mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种吊顶式空调室内机，包括壳体(100)，具有进风口(110)和出风口(120)；换热器(400)，设置在壳体(100)内；层流风扇(300)，设置在壳体(100)内，包括平行间隔设置且相互固定连接的多个环形盘片(10)，其被驱动转动时从一个轴向端将空气吸入其径向内侧的空腔内，然后使环形盘片(10)表面的空气边界层因粘性效应被环形盘片(10)带动沿径向由内向外旋转移动形成层流风，以促使空气从进风口(110)流经换热器(400)，再流向出风口(120)以回到室内；且每个出风口(120)处设置有两个对开转动设置的导风板(600)，每个导风板(600)开设有贯穿其厚度方向的多个通风微孔(610)，两个导风板(600)可相背离地转动至打开出风口(120)的位置，以便利用两者之间形成的通道引导出风方向，或相向转动至关闭出风口(120)的位置以使出风气流经多个通风微孔(610)吹出。

Description

吊顶式空调室内机 技术领域
本发明涉及空气调节技术领域，特别涉及一种吊顶式空调室内机。
背景技术
现有的家用空调室内机大部分为壁挂式和落地式，尽管商家对于空调室内机的结构进行了诸多改进，但产品难以出现本质变化，无法满足用户多样化的需求。
此外，现有的空调室内机基本采用贯流风扇，出风方向为正前方，虽然有导风板左右导流，摆叶上下导流，但受限于蜗壳结构，其左右送风角度通常小于80°，上下送风角度通常小于100°。可见，现有室内机送风方向较少，送风范围非常有限。
并且，当前贯流风扇主要为前向叶片，叶片周期性的冲击经过的气流，产生明显的旋转噪声。蜗壳配合风扇实现送风效果，在前后蜗舌处也会对气流造成冲击，产生强烈的湍流噪声。现有技术下噪声品质很难再有明显提升。
发明内容
本发明的目的是要至少解决现有技术存在的上述缺陷之一，提供一种吊顶式空调室内机，以满足用户对空调室内机的多样化需求，降低送风噪声，并提升噪声品质。
本发明的进一步的目的是要实现多种送风模式，包括强劲送风模式和无风感送风模式，以满足用户的多种送风需求。
特别地，本发明提供了一种吊顶式空调室内机，其包括：
壳体，具有至少一个进风口和至少一个出风口；
换热器，设置在壳体内，用于与流经其的空气进行热交换；和
层流风扇，设置在壳体内，其包括平行间隔设置且相互固定连接的多个环形盘片，多个环形盘片被驱动转动时从一个轴向端将空气吸入其径向内侧的空腔内，然后使环形盘片表面的空气边界层因粘性效应被环形盘片带动沿径向由内向外旋转移动形成层流风，以促使空气从进风口流经换热器，再流向出风口以回到室内；且
每个出风口处设置有两个对开转动设置的导风板，每个导风板开设有贯穿其厚度方向的多个通风微孔，两个导风板可相背离地转动至打开出风口的位置，以便利用两者之间形成的通道引导出风方向，或相向转动至关闭出风口的位置以使出风气流经多个通风微孔吹出。
可选地，至少一个出风口设置在壳体的侧面，且每个出风口的长度方向沿水平面设置；每个出风口的两个导风板的长度方向的两端分别固定于出风口长度方向两端的壳体上，且两个导风板沿上下方向排列，上侧的导风板的转动轴线位于其上端，下侧的导风板的转动轴线位于其下端；且多个通风微孔在导风板上呈矩阵式排列。
可选地，每个导风板的开孔率在25％至90％之间。
可选地，吊顶式空调室内机还包括：风道部件，设置在壳体内，其设置有与至少一个出风口一一对应的至少一个风道，用于将热交换风引导至每个出风口处；且风道沿出风气流的流动方向分为入口区段和出口区段，且在其入口区段的过流截面沿出风气流的流动方向渐缩，在其出口区段的过流截面沿出风气流的流动方向保持不变。
可选地，进风口的数量为一个，且其设置在壳体的底面；且层流风扇的转动轴线沿竖直方向延伸，运转时从其轴向底部吸入从进风口流入的空气，并沿其径向向外吹出。
可选地，换热器为轴线沿竖直方向延伸的环板状或半环板状，且其在层流风扇的径向外侧围绕层流风扇设置。
可选地，层流风扇还包括：圆形盘片，位于层流风扇的非进风的轴向端，且与该端的环形盘片平行间隔设置且间接固定相连，圆形盘片中央向内凹陷形成一容纳腔；和电机，其直接或间接地固定于壳体，且伸入容纳腔内，其转轴连接圆形盘片，以便驱动圆形盘片转动，从而带动多个环形盘片转动。
可选地，风道部件为底部敞开的罩壳状，其侧面形成有风道；风道部件罩扣在壳体底部，以便将换热器和层流风扇罩在其内。
可选地，吊顶式空调室内机还包括：托架，其包括水平设置的托环和从托环边缘向上延伸出的多个连接臂，多个连接臂可拆卸地连接于风道部件；且电机安装在托环上侧以受其支撑，电机的转轴从托环中央向下伸出。
可选地，进风口为圆形；进风口周围的壳体底壁为从进风口边缘开始径向向外并同时逐渐向下倾斜延伸的引流面，引流面为与进风口同轴的回转 面；且吊顶式空调室内机还包括导流件，其设置在进风口处，其外周面为从上至下径向向外渐扩、且与进风口同轴的回转面，用于引导室内空气经导流件的外周面与壳体底面之间的间隙流向进风口。
本发明的吊顶式空调室内机吊装在屋顶，整个壳体侧面全部显露在外，这样就能够在侧面布置多个出风口，从而实现两面、三面、四面出风甚至周向360°等多方向送风，送风范围极大。吊顶式空调室内机采用层流风扇，其基于层流原理，实现环形无死角出风，便于实现室内机的多方向送风。层流风扇利用空气边界层粘性做功，环形盘片基本与气流流动方向平行，不会强烈扰动冲击气流而产生剧烈漩涡，使其噪声大幅降低且噪声品质优秀，提升了用户体验。
进一步地，本发明在每个出风口处设置带有通风微孔的两个对开的导风板。当两个导风板打开出风口时，出风气流顺畅地从出风口吹入两个导风板之间限定的通道，然后吹向室内。两导风板相当于是出风口的延伸，这延长了流体流动通道，从而使送风距离更远且具有降噪效果。并且，可通过调节两个导风板的打开角度来改变两者之间的间隔，从而改变出风截面的大小，进而改变风量和风速。当两导风板关闭出风口时，出风气流经通风微孔吹出形成微风气流，用户无风感，避免强风吹人引起空调病，特别适于母婴使用。
进一步地，本发明利用风道将出风气流理顺后再排向出风口，减少了在出风口处产生的蜗流，降低了蜗流噪声，使噪声总值降低。此外，风道的设置也使出风更加顺畅，降低了功耗，增大了风量，提升了空调送风系统的效率。此外，风道入口处的过流截面渐缩设计可有效地增加风速，提升送风距离。经入口段的渐缩截面增速后，气流进入过流截面不变的出口区段进行稳流，可进一步调整气流方向，使气流更为稳定顺畅。
进一步地，本发明的吊顶式空调室内机中，风从导流件与壳体之间的间隙流向进风口。相比于一些结构使风从壳体底部直接竖直向上进入壳体的方案，经过导流件的引导，使进风方向接近于水平方向，使空气可更顺畅地进入层流风扇，使层流风扇能耗以及噪声都有所降低。导流件的设计也使得空调室内机的底部外观更加美观。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是本发明一个实施例的吊顶式空调室内机的结构示意图；
图2是图1所示吊顶式空调室内机的示意性分解图；
图3是沿一竖直平面剖切图1所示吊顶式空调室内机得到的剖视图；
图4是图3中的风道的顶壁和底壁型线示意图；
图5是图2中的固定架的示意性放大图；
图6是层流风扇的底部视角示意图；
图7是层流风扇的送风原理示意图；
图8是图1所示实施例的层流风扇的空气循环示意图；
图9是本发明另一实施例的层流风扇的空气循环示意图；
图10是本发明又一实施例的层流风扇的空气循环示意图；
图11是图10所示层流风扇的多个环形盘片间距渐变与风量和风压的关系示意图。
具体实施方式
下面参照图1至图11来描述本发明实施例的吊顶式空调室内机。其中，“前”、“后”、“上”、“下”、“顶”、“底”、“内”、“外”、“横向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的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。
本发明实施例的吊顶式空调室内机与空调室外机(未图示)一同构成蒸气压缩制冷循环系统，实现对室内环境的制冷/制热。
图1是本发明一个实施例的吊顶式空调室内机的结构示意图；图2是图1所示吊顶式空调室内机的示意性分解图；图3是沿一竖直平面剖切图1所示吊顶式空调室内机得到的剖视图。
如图1至图3所示，吊顶式空调室内机一般性地可包括壳体100、换热器400、层流风扇300。
吊顶式空调室内机整体吊在室内屋顶下方，壳体100的顶部用于与屋顶 连接。壳体100上开设有至少一个进风口110和至少一个出风口120。出风口120可设置在壳体100的侧面。进风口110可如图1至图3位于壳体100的底面，也可位于壳体100的侧面。
出风口120的数量可根据需要进行设置。例如，若该室内机用于安装在屋顶靠近侧墙的位置，可仅设置一个出风口。若该室内机的安装位置远离侧墙，如设置在屋顶中央，可设置如两个、三个、四个等多个朝向各不相同的出风口，以实现两面出风、三面出风、四面出风等多方向送风效果。甚至，可以使壳体为圆形，其周向全角度均开设出风口用于出风，以实现360°全方位送风。
换热器400设置在壳体100内，其可为蒸气压缩制冷循环的蒸发器，用于与流经其的空气进行热交换，形成热交换风(制冷时，热交换风为冷风，制热时，热交换风为热风)。
层流风扇300设置在壳体100内，其包括平行间隔设置且相互固定连接的环形盘片10，其被驱动转动时从一个轴向端将空气吸入其径向内侧的空腔内，然后使环形盘片10表面的空气边界层因粘性效应被环形盘片10带动沿径向由内向外旋转移动形成层流风，以促使空气从进风口110流经换热器400形成热交换风，再流向出风口120以回到室内，实现对室内的制冷/制热。
如图1至图3所示，每个出风口120处均设置有两个导风板600。两个导风板600均可转动，且两者呈对开设置(类似于两个对开门体)。两个导风板600可相背离地转动至打开出风口120的位置，或相向地转动至关闭出风口120的位置。
如图3，在两导风板600处于打开出风口120的位置时，出风气流从两导风板600之间形成的通道吹向室内，以便由两导风板600引导风向。并且，此时两个导风板之间的通道相当于出风口的延伸，延长了流体流动通道，使送风距离更远且具有降噪效果。
如图3，打开出风口120时，两个导风板600可处于平行状态。此外，两个导风板相当于风门。可使两导风板从内至外逐渐接近，以使其内部通道渐缩，以减小风量，增大风速。还可使两导风板从内至外逐渐远离，以使其内部通道渐扩，以减小风速。在以上三种状态下，还可进一步通过调节两个导风板的打开角度，调节其出口朝向，以改变出风方向。两导风板600还可往复摆动进行摆风。
每个导风板600上开设有沿自身厚度方向贯穿导风板600的多个通风微孔610。多个通风微孔610可在导风板600上呈矩阵式排列，以使其排列更加均匀。如图1，导风板从上至下设置3排，每排34个通风微孔610。通风微孔610的直径应足够小，例如设置在1至10mm之间，以实现微风出风效果。对于每个导风板600而言，其开孔率可设置在25％至90％之间，以兼具微风效果和风量要求。例如25％、30％、50％、60％、70％、80％、90％等。开孔率指的是导风板600上全部通风微孔610的总面积与导风板600的一个侧面(包括开孔部分和不开孔部分)的表面积之比。
如图1，可使每个出风口120的长度方向沿水平面设置，对应的两个导风板600沿上下方向排列。且每个导风板600的长度方向的两端分别固定于出风口120长度方向两端的壳体100上。导风板600的转动轴线沿其长度方向延伸，以便实现上下导风。上侧的导风600板的转动轴线位于其上端，下侧的导风板600的转动轴线位于其下端，以便两者对开地打开/关闭出风口120。
每个出风口120具有下两种送风模式。
其一，如图3，导风板600打开出风口120，出风气流顺畅地从出风口120吹入两导风板600之间的通道，且由两导风板引导出风方向。
其二，如图1，当导风板600关闭出风口120时，出风气流经通风微孔610吹出形成微风气流吹出，风量小，风速低，用户无风感，避免强风吹人引起空调病，特别适于母婴使用。
在一些实施例中，吊顶式空调室内机还包括风道部件180。风道部件180设置在壳体100，其包括至少一个风道182。风道182的数量与出风口120的数量相同且一一对应。风道182的作用是将热交换风引导至对应的出风口120处。每个风道182内设置有一个导流板或沿上下方向排列的多个导流板，以用于上下分隔所述风道182的内部空间。每个导流板均沿水平方向，具体为平行于出风口的长度方向延伸。
风道182将出风气流理顺后再排向出风口120，减少了在出风口120处产生的蜗流，降低了蜗流噪声，使噪声总值降低。经过导流后，出风气流更加顺畅，降低了功耗，增大了风量，提升了送风系统的效率。而导流板将风道内部空间细化分隔为多个气流通道，能增强对气流的引导作用(特别是风道中部远离风道壁面的气流)，以减小风阻，均匀气流，出风为混合自然风， 带来良好的使用体验。
在一些实施例中，如图3，风道182沿气流的流动方向分为入口区段和出口区段，在其入口区段的过流截面沿热出风气流的流动方向渐缩。即气流刚进入风道182向外流动过程时，风道182越来越窄。风道182在其出口区段的过流截面沿热出风气流的流动方向保持不变。即气流即将流出风道182之前，风道182的宽窄不变。风道182的入口区段的过流截面渐缩设计可有效地增加风速，提升送风距离。在出风气流经入口区段的渐缩截面增速后，进入截面不变的出口区段进行稳流，可进一步调整气流方向，使气流更为稳定顺畅。
图4是图3中的风道顶壁和底壁型线示意图。通过对风道182的顶壁和底壁的形状进行了细化设计，以使其型线能更好地满足设计初衷，即获得更优的引流、稳流以及防涡流效果。
风道182的宽度方向的两个壁相对于其宽度方向的中央竖直面对称，如图2。因此，本实施例中，风道过流截面的面积的变化是风道顶壁和底壁的型线的变化实现的。
如图4，BR两点所在截面为风道182的入口截面，GJ两点所在截面为风道182的出口截面。BRKF包围的空间区域为风道182的入口区段，FKJG包围的空间区域为风道182的出口区段。
从风道182的入口至出口(箭头示意的r方向)，风道182的顶壁依次为相切连接的多个区段。并且，每个区段在朝向风道182的出口方向延伸并同时逐渐向下倾斜。多个区段包括：第一弧形段BC、第二弧形段CD、第一直线段DE、第三弧形段EF以及第二直线段FG。其中，第一弧形段BC和第二弧形段CD的圆心均位于风道182的内侧，并且第二弧形段CD的直径大于第一弧形段BC的直径。图中的虚线的圆C1为第一弧形段BC所在的圆。圆C2为第二弧形段CD所在的圆。第三弧形段EF的圆心位于风道182的外侧。
风道顶壁的型线如此设置，使顶壁附近气流先缓慢进入BC段，经CD段的过渡后，在DE段急速收缩截面以加速，然后经EF段的转向，过渡到平缓的FG段实现稳流吹出。
从风道182的入口至出口，风道182的底壁依次包括相切连接的多个区段，分别为第三直线段RQ、第四弧形段QP、第四直线段PN、第五弧形段 NM、第六弧形段ML、第七弧形段LK和第五直线段KJ。其中，第三直线段RQ从风道入口至出口方向水平延伸。第四弧形段QP的圆心位于风道182的内侧，且从第三直线段RQ的末端逐渐向上延伸。第四直线段PN从第四弧形段QP的顶端向上延伸。第五弧形段NM的圆心位于风道182的外侧，并从第四直线段PN的顶端向上延伸。第六弧形段ML的圆心位于风道182的外侧且直径小于第五弧形段NM，并从第五弧形NM的顶端向上延伸。第七弧形段LK的圆心位于风道182的外侧且直径小于第六弧形段ML，并从第六弧形ML顶端先向上、然后朝风道182的出口方向延伸。第五直线段KJ从第七弧形段LK的末端朝风道182的出口方向且逐渐向下倾斜延伸，LK可平行于FG。虚线的圆C6为第五弧形段NM所在的圆，虚线的圆C5为第六弧形段ML所在的圆。虚线的圆C4为第七弧形段LK所在的圆。
风道底壁的型线如此设置，使底壁附近气流先缓慢进入RQ段，经QP段的平滑过渡后，进入PN、NM、ML段，在该三段急速收缩截面以加速，然后经LK段的转向，过渡到平缓的KJ段实现稳流吹出。
进风口110的数量为一个，且其设置在壳体100的底面。壳体100的一种可选结构如图2，其包括上侧敞开的方形的底壳150和下侧敞开的方形的顶罩130，两者罩扣在一起以限定出容纳空间。底壳150的侧面开设有前述的出风口120。出风口120的数量可为三个，底壳150的四个侧面中，有三个侧面各设置一个出风口120。底壳150的底面设置有一个进风口110。
如图2，风道部件180可为底部敞开的罩壳状，其侧面形成有前述的风道182。风道部件180罩扣在壳体100底部，以便将换热器400和层流风扇300罩在其内，使热交换风仅能通过风道182流向出风口120，以便更顺畅地吹出。
换热器400优选为轴线沿竖直方向延伸的环板状或半环板状(圆环、半圆环、方环、不规则环或者如图2所示的U形环状均可)，其在层流风扇300的径向外侧围绕层流风扇300设置，这就无需将其设置在层流风扇300的上方或下方，可节约吊顶式空调室内机的内部空间，使结构更加紧凑，整机体积更小。并且，换热器400包围层流风扇300，使层流风扇300的气流能够更快速全面地通过换热器400表面，使换热器400的换热量以及换热效率均有极大提升。
图6是层流风扇3的底部视角示意图。图2、图3和图6所示，层流风 扇300还可包括圆形盘片30和电机20。圆形盘片30位于层流风扇300的非进风的轴向端(图中所示实施例为上端)，且与该端的环形盘片10(即最上端的环形盘片)平行间隔设置且间接固定相连。圆形盘片30的中央向内(即向下)凹陷形成一容纳腔31。电机20伸入容纳腔31内，其转轴21连接圆形盘片30，以便驱动圆形盘片30转动，从而带动多个环形盘片10转动。
层流风扇300还可包括竖直延伸的多个连接杆40。连接杆40的一端固定于圆形盘片30，然后竖向延伸以贯穿多个环形盘片10，并与每个环形盘片10固定，以实现多个环形盘片10与圆形盘片30的相互固定。
如图3所示，层流风扇300为轴向进风，径向出风结构。其轴向吸气，径向出风以恰好将风水平吹向各出风口120。层流风扇300基于层流原理，实现环形无死角出风。并且，层流风扇300利用空气边界层粘性做功，环形盘片10基本与气流流动方向平行，不会强烈扰动冲击气流而产生剧烈漩涡，使其噪声大幅降低且噪声品质优秀，显著提升了用户体验。层流风扇300更具体的原理和结构在后文再进行更加详细的介绍。
如图2所示，壳体100内还固定安装有一个托板800。托板800安装在壳体100内部底侧。换热器400安装在托板800上以受其支撑。托板800的周缘与壳体100的内壁密封相接，中央开设有与进风口110相对的通风口801，以允许进风气流通过通风口801流向层流风扇300的底部。并且，如图3，进风气流经通风口801后，全部被吸入层流风扇300，而不会未经层流风扇300作用直接流向换热器400而影响换热效率。
图5是图2中的托架的示意性放大图。如图2、图3和图5所示，吊顶式空调室内机包括托架50。托架50包括水平设置的托环51和多个连接臂52(至少两个，例如图5所示的三个)。托环51为中空环状。连接臂52从托环51的边缘向上延伸，其上端可拆卸地连接于风道部件180，具体可采用螺纹连接的方式。电机20放置在托环51上侧以受其支撑，电机20的转轴21从托环51的中央向下伸出。如此，托环51通过支撑电机20，承担整个层流风扇300的重量。
如图1至图3所示，进风口110为圆形，其中心轴线为X轴。进风口110周围的壳体100的底壁为从进风口110边缘开始径向向外延伸并同时逐渐向下倾斜延伸的引流面140，引流面140为与进风口110同轴的回转面。当一平面曲线(单曲率，曲线平面与回转轴不垂直)或空间曲线(双曲率) 围绕一固定直线(回转轴)回转时，在空间便形成一个回转面。
导流件200设置于进风口110处，其外周面201为上至下径向向外渐扩、且与进风口110同轴的回转面，用于引导室内空气经导流件200的外周面201与壳体100底面之间的间隙流向进风口110。
相比于使风从壳体100底部直接竖直向上进入壳体100的方案，本发明实施例设置导流件200，使风从导流件200与壳体100底面之间的间隙流向进风口110，使得进风方向接近于水平方向，使空气更顺畅地进入层流风扇300(因为层流风扇的环形盘片10是水平延伸的)，使层流风扇300的能耗以及噪声都有所降低。此外，导流件200的设置也使吊顶式室内机的底部外观(其底部主要面向用户)更加美观，避免壳体100底部布置复杂的进风格栅影响外观。
图7是层流风扇的送风原理示意图。如图7所示，层流风扇的送风原理主要来源于尼古拉·特斯拉发现的“特斯拉涡轮机”。特斯拉涡轮机主要利用流体的“层流边界层效应”或者“粘性效应”实现对“涡轮盘片”做功的目的。环形盘片10高速旋转，各环形盘片10间隔内的空气接触并发生相互运动，则靠近各环形盘片10表面的空气边界层13因受粘性剪切力τ作用，被旋转的环形盘片10带动由内向外旋转移动形成层流风。
图8是图1所示实施例的层流风扇的空气循环示意图。如图8所示，环形盘片10中心形成有进风通道11，以使外部空气进入。多个环形盘片10彼此之间的间隙形成有多个出风通道12，以供层流风吹出。空气边界层13由内向外旋转移动形成层流风的过程是离心运动，因而离开出风通道12时的速度要大于进入进风通道11时的速度。
图9是本发明另一实施例的层流风扇的空气循环示意图。在一些实施例中，可使层流风扇300的各环形盘片的内圆直径各不相同。例如图9，沿层流风扇300的轴向进风方向(按图1至图8所示实施例为从下至上)，使多个环形盘片10的内圆直径依次变小。换句话说，沿着气流在进风通道11中流动的方向，环形盘片10的内圆直径逐渐缩小。这样一来，当空气从上向下进入进风通道11时，径向方向不同位置的气流分别对应不同的环形盘片10，这样能够使空气更加均匀地流到各环形盘片处，避免空气难以进入上侧的环形盘片处，最终达到提高风量的效果。
图10是本发明又一实施例的层流风扇的空气循环示意图，图11是图10 所示层流风扇的多个环形盘片间距渐变与风量和风压的关系示意图。
另一些实施例中，还可使层流风扇300的各相邻环形盘片的间距各不相同。如图9所示，可使沿层流风扇300的轴向进风方向，使各相邻两个环形盘片10之间的间距逐渐增大。或者说，沿着气流在进风通道11中流动的方向，各相邻两个环形盘片之间的间距逐渐增大。发明人经过多次实验发现，这样设置会有效提升层流风扇的风量。具体参考图10。
图11中横坐标轴Plate distance increase(shrinking,uniform,expanding)指的是沿着由下至上的方向相邻两个环形盘片10之间的间距的变化增加量(收缩时为负值，一致时为零，扩展时为正值)，左纵坐标轴Mass flow rate指的是风量，右纵坐标轴Pressure rise指的是风压(风压增加量)，风压指的是层流风扇的出风通道12与进风通道11进口处的压力差(出风通道12相对于进风通道11进口处的风压增加量)。并且，相邻两个环形盘片10之间的间距变化量相同，也就是说，相邻两个环形盘片10之间的间距增大或缩小的数值相同。
具体地，图11示出的是在层流风扇的环形盘片10外径、内径、数量、厚度、电机20的转速均保持不变时，多个环形盘片10间距渐变与风量和风压的关系示意图。在上述提及的各参数均保持不变时，多个环形盘片10中，每两个相邻的环形盘片10之间的间距由逐渐变化对风量影响较大，对风压影响很小。当横坐标轴表示的沿轴向进风方向，相邻两个环形盘片10之间的间距的变化量为正数时，说明前述间距逐渐增大；当横坐标轴表示的沿轴向进风方向，相邻两个环形盘片10之间的间距的变化量为负数时，说明前述间距逐渐缩小。可使相邻两个环形盘片10之间的间距变化量相同。由图11可知，多个环形盘片10中每两个相邻的环形盘片10之间的间距变化量为-1mm、1mm和2mm时，层流风扇的风量和风压均有很大的改善。
综合考虑层流风扇的风量和风压，优选将多个环形盘片10中每两个相邻的环形盘片10之间的间距设置为沿轴向进风方向逐渐增大。例如，环形盘片10外径为175mm，环形盘片10内径为115mm，环形盘片10的数量为8个，环形盘片10的厚度为2mm，电机20的转速为1000rpm(revolutions per minute，转/分钟)，此时综合考虑层流风扇的风量与风压，例如可以设置8个环形盘片10中相邻两个环形盘片10之间的间距沿轴向进风方向依次设置为：13.75mm、14.75mm、15.75mm、16.75mm、17.75mm、18.75mm、19.75mm。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解为覆盖了所有这些变型或修改。

Claims (10)

  1. 一种吊顶式空调室内机，包括：
    壳体，具有至少一个进风口和至少一个出风口；
    换热器，设置在所述壳体内，用于与流经其的空气进行热交换；和
    层流风扇，设置在所述壳体内，其包括平行间隔设置且相互固定连接的多个环形盘片，所述多个环形盘片被驱动转动时从一个轴向端将空气吸入其径向内侧的空腔内，然后使所述环形盘片表面的空气边界层因粘性效应被所述环形盘片带动沿径向由内向外旋转移动形成层流风，以促使空气从所述进风口流经所述换热器，再流向所述出风口以回到室内；且
    每个所述出风口处设置有两个对开转动设置的导风板，每个所述导风板开设有贯穿其厚度方向的多个通风微孔，两个所述导风板可相背离地转动至打开所述出风口的位置，以便利用两者之间形成的通道引导出风方向，或相向转动至关闭所述出风口的位置以使出风气流经所述多个通风微孔吹出。
  2. 根据权利要求1所述的吊顶式空调室内机，其中，
    所述至少一个出风口设置在所述壳体的侧面，且每个所述出风口的长度方向沿水平面设置；
    每个所述出风口的两个所述导风板的长度方向的两端分别固定于所述出风口长度方向两端的壳体上，且两个所述导风板沿上下方向排列，上侧的导风板的转动轴线位于其上端，下侧的导风板的转动轴线位于其下端；且
    所述多个通风微孔在所述导风板上呈矩阵式排列。
  3. 根据权利要求1所述的吊顶式空调室内机，其中，
    每个所述导风板的开孔率在25％至90％之间。
  4. 根据权利要求1所述的吊顶式空调室内机，还包括：
    风道部件，设置在所述壳体内，其设置有与所述至少一个出风口一一对应的至少一个风道，用于将所述热交换风引导至每个所述出风口处；且
    所述风道沿出风气流的流动方向分为入口区段和出口区段，且在其入口区段的过流截面沿出风气流的流动方向渐缩，在其出口区段的过流截面沿出风气流的流动方向保持不变。
  5. 根据权利要求4所述的吊顶式空调室内机，其中，
    所述进风口的数量为一个，且其设置在所述壳体的底面；且
    所述层流风扇的转动轴线沿竖直方向延伸，运转时从其轴向底部吸入从 所述进风口流入的空气，并沿其径向向外吹出。
  6. 根据权利要求5所述的吊顶式空调室内机，其中，
    所述换热器为轴线沿竖直方向延伸的环板状或半环板状，且其在所述层流风扇的径向外侧围绕所述层流风扇设置。
  7. 根据权利要求5所述的吊顶式空调室内机，其中，所述层流风扇还包括：
    圆形盘片，位于所述层流风扇的非进风的轴向端，且与该端的环形盘片平行间隔设置且间接固定相连，所述圆形盘片中央向内凹陷形成一容纳腔；和
    电机，其直接或间接地固定于所述壳体，且伸入所述容纳腔内，其转轴连接所述圆形盘片，以便驱动所述圆形盘片转动，从而带动所述多个环形盘片转动。
  8. 根据权利要求7所述的吊顶式空调室内机，其中，
    所述风道部件为底部敞开的罩壳状，其侧面形成有所述风道；
    所述风道部件罩扣在所述壳体底部，以便将所述换热器和所述层流风扇罩在其内。
  9. 根据权利要求8所述的吊顶式空调室内机，还包括：
    托架，其包括水平设置的托环和从所述托环边缘向上延伸出的多个连接臂，所述多个连接臂可拆卸地连接于所述风道部件；且
    所述电机安装在所述托环上侧以受其支撑，所述电机的转轴从所述托环中央向下伸出。
  10. 根据权利要求5所述的吊顶式空调室内机，其中，
    所述进风口为圆形；
    所述进风口周围的所述壳体底壁为从所述进风口边缘开始径向向外并同时逐渐向下倾斜延伸的引流面，所述引流面为与所述进风口同轴的回转面；且
    所述吊顶式空调室内机还包括导流件，其设置在所述进风口处，其外周面为从上至下径向向外渐扩、且与所述进风口同轴的回转面，用于引导室内空气经所述导流件的外周面与所述壳体底面之间的间隙流向所述进风口。
PCT/CN2019/103086 2019-01-17 2019-08-28 吊顶式空调室内机 WO2020147313A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910045450.5A CN111442369A (zh) 2019-01-17 2019-01-17 吊顶式空调室内机
CN201910045450.5 2019-01-17

Publications (1)

Publication Number Publication Date
WO2020147313A1 true WO2020147313A1 (zh) 2020-07-23

Family

ID=71614249

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/103086 WO2020147313A1 (zh) 2019-01-17 2019-08-28 吊顶式空调室内机

Country Status (2)

Country Link
CN (1) CN111442369A (zh)
WO (1) WO2020147313A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114263988B (zh) * 2020-09-16 2022-12-02 珠海格力电器股份有限公司 空调室内机及空调器
CN112283800A (zh) * 2020-09-16 2021-01-29 珠海格力电器股份有限公司 一种空调室内机和空调器
CN114484611B (zh) * 2022-01-04 2024-03-19 青岛海尔空调器有限总公司 壁挂式空调室内机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1125313A (zh) * 1994-09-26 1996-06-26 三菱电机株式会社 风向调节装置
CN1178309A (zh) * 1996-02-22 1998-04-08 三洋电机株式会社 埋入天花板型空调机
CN1428572A (zh) * 2001-12-25 2003-07-09 乐金电子(天津)电器有限公司 分体式空气调节器的排风装置
JP2004218960A (ja) * 2003-01-16 2004-08-05 Fujitsu General Ltd 空気調和機
CN1936437A (zh) * 2005-09-21 2007-03-28 三星电子株式会社 天花板型空调机
US9335059B2 (en) * 2013-02-21 2016-05-10 Lg Electronics Inc. Ceiling type air conditioner
CN206018824U (zh) * 2016-08-24 2017-03-15 珠海格力电器股份有限公司 空调器及其空调室内机
WO2017115969A1 (ko) * 2015-12-29 2017-07-06 황용학 천정형 공기조화장치

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1125313A (zh) * 1994-09-26 1996-06-26 三菱电机株式会社 风向调节装置
CN1178309A (zh) * 1996-02-22 1998-04-08 三洋电机株式会社 埋入天花板型空调机
CN1428572A (zh) * 2001-12-25 2003-07-09 乐金电子(天津)电器有限公司 分体式空气调节器的排风装置
JP2004218960A (ja) * 2003-01-16 2004-08-05 Fujitsu General Ltd 空気調和機
CN1936437A (zh) * 2005-09-21 2007-03-28 三星电子株式会社 天花板型空调机
US9335059B2 (en) * 2013-02-21 2016-05-10 Lg Electronics Inc. Ceiling type air conditioner
WO2017115969A1 (ko) * 2015-12-29 2017-07-06 황용학 천정형 공기조화장치
CN206018824U (zh) * 2016-08-24 2017-03-15 珠海格力电器股份有限公司 空调器及其空调室内机

Also Published As

Publication number Publication date
CN111442369A (zh) 2020-07-24

Similar Documents

Publication Publication Date Title
WO2020147313A1 (zh) 吊顶式空调室内机
WO2019057040A1 (zh) 空调室内机
WO2013155837A1 (zh) 空调室内机
WO2020147312A1 (zh) 吊顶式空调室内机
CN210014450U (zh) 吊顶式空调室内机
CN111442376B (zh) 吊顶式空调室内机
CN209744542U (zh) 空调室内机
CN209744544U (zh) 层流风扇和吊顶式空调室内机
CN210014449U (zh) 吊顶式空调室内机
CN210014451U (zh) 吊顶式空调室内机
CN209744543U (zh) 空调室内机
CN209819688U (zh) 吊顶式空调室内机
WO2020147314A1 (zh) 吊顶式空调室内机
CN210014452U (zh) 吊顶式空调室内机
CN210014448U (zh) 吊顶式空调室内机
CN210014447U (zh) 吊顶式空调室内机
CN111442378B (zh) 吊顶式空调室内机
CN111442357A (zh) 吊顶式空调室内机
CN209840268U (zh) 吊顶式空调室内机
CN111442374B (zh) 吊顶式空调室内机
CN209840266U (zh) 吊顶式空调室内机
CN209840269U (zh) 吊顶式空调室内机
CN111442375B (zh) 吊顶式空调室内机
CN209840267U (zh) 吊顶式空调室内机
CN209819690U (zh) 吊顶式空调室内机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19910582

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19910582

Country of ref document: EP

Kind code of ref document: A1