CN111442393B - Indoor machine of floor air conditioner - Google Patents

Indoor machine of floor air conditioner Download PDF

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Publication number
CN111442393B
CN111442393B CN201910045344.7A CN201910045344A CN111442393B CN 111442393 B CN111442393 B CN 111442393B CN 201910045344 A CN201910045344 A CN 201910045344A CN 111442393 B CN111442393 B CN 111442393B
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CN
China
Prior art keywords
air
laminar flow
annular
indoor unit
flow fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN201910045344.7A
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Chinese (zh)
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CN111442393A (en
Inventor
李英舒
关婷婷
闫宝升
陈绍文
王永涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN201910045344.7A priority Critical patent/CN111442393B/en
Publication of CN111442393A publication Critical patent/CN111442393A/en
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Publication of CN111442393B publication Critical patent/CN111442393B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0018Indoor units, e.g. fan coil units characterised by fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0018Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20Casings or covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/247Active noise-suppression

Abstract

The invention provides an indoor unit of a floor air conditioner. Wherein the floor air conditioner indoor unit includes: the air conditioner comprises a shell, a front panel, a rear shell, a top plate and a bottom plate, wherein a cavity is defined in the shell, air outlets are formed in the upper portion and the lower portion of the shell, an air inlet is formed in the middle of the shell, and the shell comprises the front panel, the rear shell, the top plate and the bottom plate; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet, wherein the evaporator is flat and parallel to the front panel; and two laminar flow fans which are respectively arranged above and below the evaporator and are configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and enable the laminar flow air to be blown out from the air outlet. The indoor unit of the vertical air conditioner is provided with the laminar flow fan, and the flat-plate evaporator and the air inlet are arranged in a matching way, so that the occupied volume in the cavity can be reduced; laminar air supply is realized through the viscidity effect, and the air supply process noise is little, and upper portion and lower part air supply make the air-out height high.

Description

Indoor machine of floor air conditioner
Technical Field
The invention relates to the technical field of household appliances, in particular to an indoor unit of a vertical air conditioner.
Background
With the development of society and the increasing living standard of people, various air conditioning devices have become one of the indispensable electrical devices in people's daily life. Various air conditioning devices can help people to reach a temperature that can be adapted to when the ambient temperature is too high or too low.
The current air conditioning devices mainly include various types of air conditioners and fans, but most users consider that hot air or cold air generated by the current air conditioners is unevenly distributed in a room or a closed space, and has certain distribution limitations. In addition, fans used in indoor units of air conditioners are mainly centrifugal fans and cross-flow fans. However, the centrifugal fan and the cross flow fan have the following problems: the centrifugal fan needs dozens of large-volume blades to improve the air pressure and the air volume, so that the centrifugal fan has high noise, and when the centrifugal fan is used for an indoor unit of a vertical air conditioner, air needs to be bent in two directions of 90 degrees from entering the centrifugal fan to being sent out of the air conditioner, and the air loss is caused in each direction; although the noise of the cross flow fan is low, the wind pressure is too small, and the air supply distance is short. And the whole volume of the cross flow fan is large, and the actual effective volume is small, so that the space waste is caused.
Disclosure of Invention
The invention aims to provide a vertical air conditioner indoor unit with low noise, high air volume and high air pressure.
The invention further aims to realize 360-degree air supply of the indoor unit of the floor air conditioner, avoid air-out direct blowing users and improve the use experience of the users.
In particular, the present invention provides a floor air conditioner indoor unit, comprising: the air conditioner comprises a shell, a front panel, a rear shell, a top plate and a bottom plate, wherein a cavity is defined in the shell, air outlets are formed in the upper portion and the lower portion of the shell, an air inlet is formed in the middle of the shell, and the shell comprises the front panel, the rear shell, the top plate and the bottom plate; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet, wherein the evaporator is flat and parallel to the front panel; and two laminar flow fans which are respectively arranged above and below the evaporator and are configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and enable the laminar flow air to be blown out from the air outlet.
Optionally, the rear shell comprises: the air inlet is arranged on the rear panel to realize single-side air inlet.
Optionally, the indoor unit of the floor air conditioner further comprises: and a first partition plate disposed between the evaporator and the front panel to prevent air, which exchanges heat through the evaporator, from flowing to the front of the cavity.
Optionally, the evaporator is provided with two, and vertically arranged in the cavity, and the indoor unit of the vertical air conditioner further comprises: and the second partition plate is arranged between the two evaporators and is configured to prevent the two evaporators from influencing each other.
Optionally, each laminar flow fan all includes laminar flow fan and laminar flow motor, and wherein two laminar flow fans set up respectively inside the cavity of the air outlet of corresponding upper portion and lower part, and laminar flow fan includes: the annular disks are arranged in parallel at intervals and have the same central axis, the centers of the annular disks form an air inlet channel together, and air in the cavity enters gaps among the annular disks through the air inlet channel; and the two laminar flow motors are respectively connected with the two laminar flow fans and are configured to drive the plurality of annular discs to rotate so as to enable the air boundary layers close to the surfaces of the plurality of annular discs to rotate and move from inside to outside, so that laminar flow wind is formed and blown out from the air outlet.
Optionally, the laminar flow fan further comprises: the driving discs are arranged on one side of the plurality of annular discs in parallel at intervals; and a connector extending through the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk, the laminar flow motor further configured to: the driving disc is directly driven to rotate, and the driving disc drives the annular discs to rotate.
Optionally, the indoor unit of the floor air conditioner further comprises: the fixing plate is provided with a plurality of reinforcing ribs on one side and a plurality of clamping grooves on the other side; and the fixing frame is provided with a plurality of clamping jaws corresponding to the clamping grooves on one side facing the fixing plate, so that the laminar flow motor is fixed between the fixing frame and the fixing plate after the clamping jaws are respectively screwed with the clamping grooves, a through hole is formed in the center of the fixing frame, and an output shaft of the laminar flow motor penetrates through the through hole and then is fixed with the driving disc.
Optionally, the indoor unit of the floor air conditioner further comprises: and the air guide ring is arranged between the evaporator and the laminar flow fan and is configured to guide air subjected to heat exchange through the evaporator into the air inlet channel.
Optionally, the shell is provided with an air outlet at the upper part and/or the lower part thereof and surrounds the laminar flow fan for one circle; or
Optionally, the indoor unit of the floor air conditioner further comprises: the wind shielding piece is arranged outside the laminar flow fan and provided with a notch; the shell is provided with an air outlet at the position corresponding to the notch.
Optionally, the center of the driving disk is formed with a groove toward the plurality of annular disks, and the laminar flow motor is fixedly disposed in the groove.
Optionally, the surface of the drive disk facing the laminar flow motor is planar and the surface facing the plurality of annular disks has a conically shaped projection to direct the flow of air entering the laminar flow fan and assist in creating laminar flow wind.
Optionally, the connecting piece is a connecting piece, the cross section of the connecting piece is provided with two sections of curves which are sequentially arranged along the rotating direction of the annular disc, and the chord length of the two sections of curves is in a linear relation with the air quantity generated by the laminar flow fan.
Optionally, the cross section of the connecting piece has double circular arcs arranged in sequence along the direction of rotation of the annular disk: the inner arc and the back arc are both raised towards the rotating direction of the annular disk, and have the same circle center and are arranged in parallel or have different circle centers and are intersected at two ends.
Optionally, the plurality of annular disks are arranged according to one or more of the following structures: the inner diameters of the annular disks are gradually reduced from one side far away from the driving disk to the other side; the distance between two adjacent annular disks in the plurality of annular disks is gradually increased from one side far away from the driving disk to the other side; each annular disc is an arc disc which is gradually close to the driving disc from the center to the edge and protrudes towards one side of the driving disc.
The invention relates to a floor air conditioner indoor machine, comprising: the air conditioner comprises a shell, a front panel, a rear shell, a top plate and a bottom plate, wherein a cavity is defined in the shell, air outlets are formed in the upper portion and the lower portion of the shell, an air inlet is formed in the middle of the shell, and the shell comprises the front panel, the rear shell, the top plate and the bottom plate; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet, wherein the evaporator is flat and parallel to the front panel; and two laminar flow fans which are respectively arranged above and below the evaporator and are configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and enable the laminar flow air to be blown out from the air outlet. The indoor unit of the vertical air conditioner is provided with the laminar flow fan, laminar flow air supply is realized through a viscous effect, the noise in the air supply process is low, the air volume is high, and the use experience of a user is effectively improved.
Furthermore, the shell of the indoor unit of the floor air conditioner is provided with an air outlet at the upper part and/or the lower part thereof and surrounds the laminar flow fan for a circle; or the vertical air conditioner indoor unit also comprises: the wind shielding piece is arranged outside the laminar flow fan and provided with a notch; the shell is provided with an air outlet at the position corresponding to the notch. The indoor machine of the vertical air conditioner is provided with air outlets at the upper part and the lower part, so that the air can be discharged from the upper part and the lower part, and the air output is improved. The rear shell includes: the air inlet is arranged on the rear panel to realize single-side air inlet. The flat-plate-shaped evaporator is matched with the air inlet, so that air entering the cavity through the air inlet can exchange heat through the evaporator. The flat plate evaporator can also effectively reduce the occupied volume in the cavity. Laminar flow fan includes laminar flow fan and laminar flow motor, and the laminar flow fan sets up inside the cavity that corresponds the air outlet, can realize upper portion and lower part air-out. The laminar flow motor is fixed in between mount and the fixed plate, and wherein the perforation has been seted up at the mount center, and the output shaft of laminar flow motor passes behind the perforation fixed with laminar flow fan's drive disc, can effectively strengthen laminar flow fan and laminar flow motor's firm in connection degree, promotes whole operational reliability.
Furthermore, in the indoor unit of the floor air conditioner, the plurality of annular disks of the laminar flow fan can be arranged according to one or more of the following structures: the inner diameters of the annular disks are gradually reduced from one side far away from the driving disk to the other side; the distance between two adjacent annular disks in the plurality of annular disks is gradually increased from one side far away from the driving disk to the other side; each annular disc is an arc disc which is gradually close to the driving disc from the center to the edge and protrudes towards one side of the driving disc. The above-mentioned form that sets up a plurality of annular disks all can effectively promote laminar flow fan's amount of wind for laminar flow fan's air-out satisfies user's user demand. In addition, the connecting piece can be a connecting piece, the cross section of the connecting piece is provided with two sections of curves which are sequentially arranged along the rotating direction of the annular disc, and the chord length of the two sections of curves is in a linear relation with the air quantity generated by the laminar flow fan. The setting of connection piece can effectively promote laminar flow fan's wind pressure for after laminar flow wind blows off through the clearance between a plurality of annular disc, owing to receive the pressure differential effect, laminar flow fan outside air is impressed the annular disc through inlet air channel, and the circulation is reciprocal like this, thereby forms laminar flow air cycle. A plurality of air outlets formed by the gaps among the plurality of annular discs can enable the laminar flow fan to realize 360-degree air supply, various uncomfortable symptoms caused by direct blowing of air supply by the air conditioner are avoided for users, and the use experience of the users is further improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic diagram of a prior art centrifugal fan used in an indoor unit of a floor air conditioner;
fig. 2 is a schematic view of the overall structure of an indoor unit of a floor air conditioner according to a first embodiment of the present invention;
fig. 3 is a partial schematic view of the indoor unit of the neutral air conditioner of fig. 2;
fig. 4 is an exploded view of the components of the indoor unit of the neutral air conditioner of fig. 2;
fig. 5 is a schematic view showing the overall structure of an indoor unit of a floor air conditioner according to a second embodiment of the present invention;
fig. 6 is a partial schematic view of the indoor unit of the floor standing type air conditioner of fig. 5;
fig. 7 is an exploded view of the components of the indoor unit of the neutral air conditioner of fig. 5;
fig. 8 is a schematic view illustrating air circulation of a laminar flow fan in an indoor unit of a floor air conditioner according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating the blowing principle of the laminar flow fan in the indoor unit of the floor air conditioner according to one embodiment of the present invention;
fig. 10 is a graph illustrating the velocity profile and force profile of a laminar flow fan in an indoor unit of a floor air conditioner in accordance with one embodiment of the present invention;
FIG. 11 is a schematic diagram of a laminar flow fan with a fluted drive disc;
FIG. 12 is a schematic view of the laminar flow fan of FIG. 11 from another perspective;
FIG. 13 is a schematic view of the laminar flow fan of FIG. 11 from a further perspective;
FIG. 14 is a cross-sectional view of the laminar flow fan of FIG. 11;
FIG. 15 is a schematic view of the laminar flow fan of FIG. 11 coupled to a laminar flow motor;
FIG. 16 is an exploded view of the components of the laminar flow motor, stationary plate and mounting bracket;
FIG. 17 is a schematic view of the connection of a laminar flow fan with a drive disk having a conical projection to a laminar flow motor;
FIG. 18 is a schematic view of the laminar flow fan of FIG. 17 from another perspective;
FIG. 19 is a cross-sectional schematic view of the laminar flow fan of FIG. 17;
FIG. 20 is a schematic diagram of the relationship between the length of the string line of the connecting piece in FIG. 19 and the wind quantity and pressure;
FIG. 21 is a schematic view showing the relationship between the installation angle of the connecting piece of FIG. 19 and the air volume and the air pressure;
FIG. 22 is a cross-sectional schematic view of a laminar flow fan having aero blades;
FIG. 23 is a schematic view of the aero blade installation angle of the laminar flow fan of FIG. 22 in relation to air flow and wind pressure;
FIG. 24 is a schematic view of a laminar flow fan with gradually changing spacing between a plurality of annular disks and a laminar flow motor;
FIG. 25 is a schematic view of the laminar flow fan of FIG. 24 coupled to a laminar flow motor from another perspective;
FIG. 26 is a schematic diagram showing the relationship between the gradual change of the pitch of the plurality of annular disks and the wind volume and pressure of the laminar flow fan in FIG. 24;
FIG. 27 is a partial cross-sectional view of a laminar flow fan with a gradual change in the inner diameter of a plurality of annular disks;
FIG. 28 is a schematic diagram of the inner diameter gradient of the multiple annular disks of the laminar flow fan of FIG. 27 in relation to air flow and air pressure;
FIG. 29 is a schematic view of a central angle of a connecting line of an inner diameter and an outer diameter of a plurality of annular disks of a laminar flow fan in which the annular disks are arc-shaped disks on the same longitudinal section passing through the central axis; and
fig. 30 is a schematic diagram showing the relationship between the central angle and the air volume and the wind pressure in fig. 29.
Detailed Description
Fig. 1 is a schematic diagram of an indoor unit of a floor air conditioner using a centrifugal fan in the prior art. Two arrows in fig. 1 show the air flowing direction of the centrifugal fan 200 during the air supply process when the centrifugal fan is applied to the indoor unit of the floor air conditioner, and the centrifugal fan 200 in the prior art needs to make two 90-degree turns from the air inlet to the air outlet during the whole process when the centrifugal fan is applied to the indoor unit of the floor air conditioner, and each turn is accompanied by a large air loss. In addition, the centrifugal fan 200 generally requires several tens of large-sized blades to increase wind pressure and wind volume, and the blades rotate to rub or impact air when the centrifugal fan 200 operates. Since the centrifugal fan 200 has wide blades and a large thickness, a very large noise is generated when the motor of the centrifugal fan 200 is operated at a high speed. In addition, a cross-flow fan is commonly used in the prior art, but although the noise of the cross-flow fan is low, the wind pressure is too small, and the air supply distance is short; and the whole volume of the cross flow fan is large, and the actual effective volume is small, so that the space waste is caused. The embodiment provides a floor air conditioner indoor unit, is provided with the laminar flow fan, realizes the laminar flow air supply through the viscidity effect, and air supply process noise is little, the wind gauge height, the wind pressure is big, effectively promotes user's use and experiences.
Fig. 2 is a schematic diagram illustrating an overall structure of a floor type air conditioner indoor unit 300 according to an embodiment of the present invention, fig. 3 is a schematic diagram illustrating a partial structure of the floor type air conditioner indoor unit 300 in fig. 2, and fig. 4 is an exploded schematic diagram illustrating components of the floor type air conditioner indoor unit 300 in fig. 2. Fig. 5 is a schematic view illustrating an overall structure of a floor type air conditioner indoor unit 300 according to a second embodiment of the present invention, fig. 6 is a schematic view illustrating a partial structure of the floor type air conditioner indoor unit 300 of fig. 5, and fig. 7 is an exploded schematic view illustrating components of the floor type air conditioner indoor unit 300 of fig. 5. Fig. 8 is a schematic air circulation diagram of the laminar flow fan 100 in the floor air conditioner 300 according to an embodiment of the present invention, fig. 9 is a schematic air supply principle diagram of the laminar flow fan 100 in the floor air conditioner 300 according to an embodiment of the present invention, and fig. 10 is a velocity distribution and force distribution diagram of the laminar flow fan 100 in the floor air conditioner 300 according to an embodiment of the present invention. Fig. 11 is a structural view of a laminar flow fan 100 having grooves 32 in a driving disk 30, fig. 12 is a structural view of the laminar flow fan 100 in fig. 11 from another view, fig. 13 is a structural view of the laminar flow fan 100 in fig. 11 from another view, and fig. 14 is a sectional view of the laminar flow fan 100 in fig. 11. As shown in fig. 2 to 10, the floor air conditioner indoor unit 300 may generally include: a housing 310, an evaporator 382, and two laminar flow fans 110.
Wherein, the inside of the casing 310 defines a cavity, and the upper and lower parts of the casing 310 are provided with an air outlet 320, and the middle part is provided with an air inlet 330. The housing 310 may include: a front panel 311, a rear case 312, a top panel 313 and a bottom panel 314. In one particular embodiment, the rear shell 312 includes a rear panel 315 and two side panels 316. The air inlet 330 may be disposed on the rear panel 315 to realize single-sided air inlet. The intake vent 330 of the housing 310 may be provided in the form of an intake grill, which can draw indoor air into the cavity through different directions and filter the air. An air guiding plate 321 may be disposed at the air outlet 320 of the housing 310 to adjust the air outlet direction of the indoor unit 300 of the vertical air conditioner.
The evaporator 382 may be disposed inside the cavity corresponding to the intake vent 330 and configured to exchange heat with air entering the cavity through the intake vent 330. The evaporator 382 of the present embodiment is flat and parallel to the front panel 311. It should be noted that the evaporator 382 is closer to the back panel 315 to ensure that the air entering the cavity from the air inlet 330 on the back panel 315 can first exchange heat through the evaporator 382. The floor air conditioner indoor unit 300 may further include: and a first partition 383 disposed between the evaporator 382 and the front panel 311 to prevent air heat-exchanged through the evaporator 382 from flowing to the front of the cavity. The first partition 383 of this embodiment may be U-shaped with the U-shaped opening facing the evaporator 382. The evaporators 382 may be provided in one or more number, and when two evaporators 382 are provided, they may be vertically provided up and down inside the cavity. And the floor type air conditioner indoor unit 300 further includes: a second partition 384 is disposed between the two evaporators 382 and configured to prevent the two evaporators 382 from interfering with each other. A water receiving tray (not shown) may be disposed below the evaporator 382 to receive the condensed water generated from the evaporator 382.
The two laminar flow fans 110 are respectively disposed above and below the evaporator 382, and configured to make the air heat-exchanged by the evaporator 382 form laminar flow air by using a viscosity effect, and make the laminar flow air blow out from the air outlet 320. When the evaporator 382 is provided in plural, for example, two, the two laminar flow fans 110 are respectively provided above and below the entirety of the two evaporators 382. Each laminar flow fan 110 includes a laminar flow fan 100 and a laminar flow motor 20. Wherein two laminar flow fans 100 set up respectively inside the cavity of the air outlet 320 of corresponding upper portion and lower part, laminar flow fan 100 includes: the annular disks 10 are arranged in parallel at intervals and have the same central axis, the centers of the annular disks 10 jointly form an air inlet channel 11, and air in the cavity enters gaps among the annular disks 10 through the air inlet channel 11. And two laminar flow motors 20 respectively connected to the two laminar flow fans 100, wherein the laminar flow motors 20 are configured to drive the plurality of annular disks to rotate, so that the air boundary layer 13 adjacent to the surfaces of the plurality of annular disks moves from inside to outside in a rotating manner, thereby forming laminar air blown out from the air outlet 320.
Specifically, the laminar flow motor 20 drives the plurality of annular disks to rotate, so that the plurality of annular disks contact with air between each other and move with each other, and the air boundary layer 13 close to the surfaces of the plurality of annular disks is driven by the plurality of rotating annular disks to rotate from inside to outside due to the viscous effect to form laminar flow wind. A plurality of air outlets 12 are formed in the gaps between the plurality of annular disks, each air outlet 12 can supply air for 360 degrees, and laminar air discharged from the air outlets 12 is blown out to the environment outside the indoor unit 300 of the floor air conditioner through the air outlet 320. The laminar flow fan can realize 360 air supply, but the air outlet 320 can be set according to actual conditions, and can realize four-side air supply, three-side air supply, two-side air supply or single-side air supply respectively.
For example, the casing 310 may be provided with an air outlet 320 at the upper portion and/or the lower portion thereof around the laminar flow fan 100, so as to supply air in four directions, that is, 360 °. Alternatively, the floor air conditioner indoor unit 300 may further include: at least one wind shielding member disposed outside the at least one laminar flow fan 100 and having a gap 373; the housing 310 is provided with an air outlet 320 at a position corresponding to the notch 373. The notch 373 is located outside the periphery of the laminar flow fan 100 so as to blow out the laminar flow wind generated by the laminar flow fan 100. According to the size of the gap 373 and the arrangement of the corresponding air outlet 320, three-side air supply, two-side air supply or three-side air supply can be realized. It should be noted that the air outlets of the upper and lower portions may be the same or different, for example, the upper and lower portions may both supply air at 360 degrees, the upper portion may also supply air at 360 degrees, the lower portion may supply air at three sides, two sides, or a single side, and so on.
The indoor unit 300 of the floor air conditioner may further include a wind guide 360 configured to guide air entering the cavity through the wind inlet 330 into the air intake passage 11. The number of the induced draft rings 360 of this embodiment may be two, and the two induced draft rings are respectively disposed between the evaporator 382 and the two laminar flow fans 100, the air entering the cavity through the air inlet 330 first exchanges heat through the evaporator 382, and the air after exchanging heat is guided to enter the air inlet channel 11 of the laminar flow fan 100 through the induced draft rings 360.
As shown in fig. 8, the laminar flow fan 100 may further include: a drive disk 30 and a link. Wherein the driving disks 30 are spaced apart and arranged in parallel on one side of the plurality of annular disks 10. And a connecting member penetrating the drive disk 30 and the plurality of annular disks 10 to connect the plurality of annular disks 10 to the drive disk 30. As shown in fig. 11, the connector may be a connecting tab 40. The laminar flow motor 20 may also be configured to: the driving disk 30 is directly driven to rotate, and the driving disk 30 drives the plurality of annular disks 10 to rotate. That is, the laminar flow motor 20 configured to rotate the plurality of annular discs 10 is dependent on the laminar flow motor 20 first rotating the driving disc 30, and then the driving disc 30 rotates the plurality of annular discs 10. In a specific embodiment, the radius of the drive disk 30 is the same as the outer diameter of the plurality of annular disks 10, and may be set in a certain range, for example, 170 mm to 180 mm, so as to constrain the occupied volume of the laminar flow fan 100 in the transverse direction, cooperatively define the number of annular disks 10 and the spacing between two adjacent annular disks 10, and constrain the thickness of the laminar flow fan 100 in the longitudinal direction, which may effectively constrain the entire occupied volume of the laminar flow fan 100. Note that, the inner diameter of the annular disk 10 refers to the radius of its inner circumference; the outer diameter refers to the radius of its outer circumference. The specific values of the outer diameter of the annular disk 10 are merely exemplary and are not intended to limit the present invention.
Two embodiments of the indoor unit 300 of the floor air conditioner are described below:
the first embodiment is as follows: as shown in fig. 2 to 4, the indoor unit 300 of the floor air conditioner of the present embodiment is provided with two evaporators 382 vertically arranged up and down, wherein the evaporators 382 are flat and parallel to the front panel 311. The air inlet 330 is disposed on the rear panel 315 of the rear casing 312, i.e., a single side of the air inlet. That is, two evaporators 382 are disposed corresponding to the intake vent 330, and the air entering the cavity from the intake vent 330 can exchange heat through the two evaporators 382. The front of the two evaporators 382 is further provided with a first clapboard 383, which can prevent the air after heat exchange from flowing to the front of the cavity, the first clapboard 383 of the embodiment is U-shaped, and the opening of the U-shape faces the evaporators 382. A second partition 384 may be disposed between the two evaporators 382 to prevent the two evaporators 382 from interfering with each other. The air after heat exchange enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the air guiding ring 360, and further enters between a plurality of annular disks of the laminar flow fan 100. The number of the wind shielding members of the indoor unit 300 of the floor air conditioner of this embodiment may be two, and the two wind shielding members are respectively disposed outside the two laminar flow fans 100 and are wind shielding plates 371, and the peripheral outer side of the laminar flow fan 100, which is not shielded by the wind shielding plates 371, is the gap 373. Since the wind shielding plates 371 are provided with the notches 373 on the front side and the left and right sides of the circumference of the laminar flow fan 100, the air outlets 320 are respectively provided on the front panel 311 and the upper and lower portions of the two side panels 316 of the rear casing 312 of the indoor unit 300 of the floor air conditioner of this embodiment, and the laminar flow wind formed by the laminar flow fan 100 is blown out from the air outlets 320, so that three-sided air supply can be realized.
Example two: as shown in fig. 5 to 7, the indoor unit 300 of the floor type air conditioner of the present embodiment is provided with a single vertically disposed evaporator 382, and the evaporator 382 has a flat plate shape and is parallel to the front panel 311. The air inlet 330 is disposed on the rear panel 315 of the rear casing 312, i.e., a single side of the air inlet. That is, the evaporator 382 is disposed corresponding to the intake vent 330, and the air entering the cavity from the intake vent 330 can exchange heat through the evaporator 382. The front of the evaporator 382 is further provided with a first partition 383, which can prevent the air after heat exchange from flowing to the front of the cavity, the first partition 383 of the present embodiment is U-shaped, and the opening of the U-shape faces the evaporator 382. The air after heat exchange enters the air inlet channel 11 of the laminar flow fan 100 through the guiding action of the air guiding ring 360, and further enters between a plurality of annular disks of the laminar flow fan 100. The number of the wind shielding members of this embodiment may be two, the two wind shielding members are respectively disposed outside the two laminar flow fans 100 and are wind shielding shells 372, and the outer side of the peripheral portion of the laminar flow fan 100 not shielded by the wind shielding shells 372 is the notch 373. Since the wind shield 372 has the notch 373 at the front side of the circumference of the laminar flow fan 100, the floor air conditioner indoor unit 300 of the present embodiment has the air outlets 320 only at the upper and lower portions of the front panel 311, and the laminar flow wind generated by the laminar flow fan 100 is blown out from the air outlets 320, so that single-sided air supply at both the upper and lower portions can be realized.
The wind shielding member in the above embodiment, whether the wind shielding plate 371 or the wind shielding case 372, the notch 373 is disposed corresponding to the wind outlet 320. For example, for each laminar flow fan 100, the wind deflector 371 can discharge laminar flow wind formed by the laminar flow fan 100 on three sides, and three wind outlets 320 are correspondingly arranged at the wind deflector 371; the wind blocking case 372 can discharge the laminar wind formed by the laminar fan 100 in a single side, and one wind outlet 320 is correspondingly arranged at the position. The wind shielding member can ensure that laminar flow wind formed by the laminar flow fan 100 can not blow to other places in the cavity except blowing out through the air outlet 320, and the influence on the normal work of other components in the cavity is avoided.
As shown in fig. 8, the centers of the plurality of annular disks 10 are collectively formed with an air inlet passage 11 for allowing air outside the laminar flow fan 100 to enter. A plurality of air discharge ports 12 are formed at gaps between the plurality of annular disks 10 to allow laminar air to be blown out. The process of laminar wind formed by the inward and outward rotating movement of the air boundary layer 13 is centrifugal movement, so that the speed of the air leaving the air outlet 12 is higher than that of the air entering the air inlet channel 11. The pressure difference between the air outlet 12 of the laminar flow fan 100 and the inlet of the air inlet channel 11 is wind pressure. The plurality of air outlets 12 formed by the gaps between the plurality of annular disks 10 can enable the laminar flow fan 100 to uniformly supply air at 360 degrees, thereby avoiding various uncomfortable symptoms caused by direct blowing of air by the indoor unit 300 of the floor air conditioner, and further improving the use experience of the user.
The blowing principle of the laminar flow fan 100 is derived primarily from the "tesla turbine" found in nigula tesla. Tesla turbines mainly utilize the 'laminar boundary layer effect' or 'viscous effect' of the fluid to achieve the purpose of doing work on 'turbine disks'. In the laminar flow fan 100 of this embodiment, the laminar flow motor 20 drives the driving disk 30, the driving disk 30 drives the plurality of annular disks 10 to rotate at a high speed, and the air in the intervals of the annular disks 10 contacts and moves with each other, so that the air boundary layer 13 near the surfaces of the annular disks 10 is driven by the rotating annular disks 10 to rotate from inside to outside due to the action of the viscous shear force τ, thereby forming laminar flow wind.
FIG. 10 is a graph showing the distribution τ (y) of the viscous shear force and the distribution u (y) of the velocity to which the boundary layer 13 of air is subjected. The viscous shear force experienced by the air boundary layer 13 is actually the resistance that each annular disk 10 generates to the air boundary layer 13. The axis of abscissa in fig. 10 refers to the distance in the moving direction of the air boundary layer 13, and the axis of ordinate refers to the height of the air boundary layer 13 in the direction perpendicular to the moving direction. v. ofeThe air flow velocity at each point in the air boundary layer 13, δ being the thickness of the air boundary layer 13, τwIs a viscous shear force at the surface of the annular disc 10. The variable y in τ (y) and u (y) refers to the height of the cross-section of the boundary layer 13 in the direction perpendicular to the direction of movement, and L is the distance between a point on the inner circumference of the annular disk 10 and a point on the surface of the annular disk 10.τ (y) is the distribution of viscous shear forces experienced at this distance L at a cross-sectional height y of the boundary layer 13 of air; u (y) is the velocity profile at this distance L for a cross-section of the air boundary layer 13 having a height y.
The laminar flow fan 100 shown in fig. 11 to 14 has a groove 32 formed toward the plurality of annular disks 10 at the center of the driving disk 30, and the laminar flow motor 20 is fixedly disposed in the groove 32. Fig. 15 is a schematic view of the connection between the laminar flow fan 100 and the laminar flow motor 20 in fig. 11, and fig. 16 is a schematic view of the laminar flow motor 20, the fixing plate 340, and the fixing frame 350 in an exploded manner. As shown in fig. 15 and 16, the indoor unit 300 of the floor air conditioner may further include: a fixing plate 340 and a fixing frame 350. Wherein, one side of the fixing plate 340 is provided with a plurality of reinforcing ribs 341, and the other side is provided with a plurality of clamping grooves 342. The reinforcing ribs 341 can effectively improve the firmness of the fixing plate 340. The fixing frame 350 is provided with a plurality of clamping jaws 351 corresponding to the plurality of clamping slots 342 on one side facing the fixing plate 340, so that the laminar flow motor 20 is fixed between the fixing frame 350 and the fixing plate 340 after the plurality of clamping jaws 351 are respectively screwed in the plurality of clamping slots 342, wherein a through hole 352 is formed in the center of the fixing frame 350, and the output shaft 21 of the laminar flow motor 20 passes through the through hole 352 and then is fixed with the driving disc 30. With the laminar flow fan 100 shown in fig. 11 to 14, since the center of the driving disk 30 is formed with the groove 32 toward the plurality of annular disks 10, the output shaft 21 of the laminar flow motor 20 is fixedly disposed in the groove 32 of the driving disk 30 after passing through the penetration hole 352.
Fig. 17 is a schematic view of the connection between the laminar flow fan 100 having the circular disk 30 with the conical protrusions 31 and the laminar flow motor 20, fig. 18 is a schematic view of the laminar flow fan 100 from another view angle in fig. 17, and fig. 19 is a schematic view of the cross section of the laminar flow fan 100 in fig. 17. The surface of the driving disk 30 of the laminar flow fan 100 in fig. 17 to 19 facing the laminar flow motor 20 is a flat surface, and the surface facing the plurality of annular disks 10 has a conical projection 31 to guide the flow of air entering the laminar flow fan 100 and assist in forming laminar flow wind.
The main function of the driving disc 30 is to fixedly receive the laminar flow motor 20 and to be connected to the plurality of annular discs 10 through a connection member, so as to drive the plurality of annular discs 10 to rotate when the laminar flow motor 20 drives the driving disc 30 to rotate. With the laminar flow fan shown in fig. 17 to 19, since the surface of the drive disk 30 facing the laminar flow motor 20 is a plane, the output shaft 21 of the laminar flow motor 20 is fixedly disposed on the plane side of the drive disk 30 after passing through the through hole 352. In the laminar flow fan 100 shown in fig. 17 to 19, the surface of the driving disk 30 facing the plurality of annular disks 10 has the conical protrusions 31, so that the air entering the laminar flow fan 100 through the air inlet channel 11 can be effectively guided into the gaps between the annular disks 10, and the efficiency of forming laminar flow air is improved.
In a preferred embodiment, the connecting member is a connecting piece 40, and the cross section of the connecting piece 40 has two curves sequentially arranged along the rotation direction of the annular disk 10, and the chord length of the two curves is in a linear relation with the air quantity generated by the laminar flow fan 100. The connecting plate 40 may be provided in plural and evenly spaced throughout the drive disk 30 and the plurality of annular disks 10. The connecting pieces 40 uniformly penetrate through the driving disk 30 and the annular disks 10 at intervals, so that the connection relationship between the driving disk 30 and the annular disks 10 is stable, and further, when the laminar flow motor 20 drives the driving disk 30 to rotate, the driving disk 30 can stably drive the annular disks 10 to rotate, and the working reliability of the laminar flow fan 100 is improved.
It should be noted that the two curves 41 and 42 may be arcs, non-arcs, straight lines, etc., and the straight line may be a special curve. Where the distance between the two ends of the curve 41 is the same as the distance between the two ends of the curve 42, the chord line 51 length may be the distance between the two ends of the curve 41 or the curve 42. When the distance between the two end points of the curve 41 is different from the distance between the two end points of the curve 42, if the two ends of the curve 41 and the curve 42 are not intersected, the length of the chord line 51 can be the length of the connecting line of the middle points of the curves of the cross section of the connecting sheet 40 except the curves 41 and 42; if only one end of the curves 41 and 42 intersect, the chord line 51 length may be the length of the line connecting the midpoint of the curve of the cross-section of the connecting piece 40 excluding the curves 41, 42 and the end point of the intersection.
As shown in fig. 19, the connecting piece 40 may be a double-arc blade 401 having a cross section having double arcs arranged in sequence in the direction in which the annular disk 10 rotates: the inner arc 41 and the back arc 42, and the inner arc 41 and the back arc 42 are both convex towards the rotating direction of the annular disk 10, have the same center and are arranged in parallel. Fig. 19 is a schematic cross-sectional view of laminar fan 100 viewed from above, in which laminar flow motor 20 drives annular disk 10 to rotate clockwise, and back arcs 42 and inner arcs 41 project in the same direction as annular disk 10. In other embodiments, the laminar flow motor 20 may also drive the annular disk 10 to rotate counterclockwise, and the protruding directions of the back arc 42 and the inner arc 41 may be opposite to those shown in fig. 19.
Fig. 20 is a schematic diagram showing the relationship between the length of the chord line 51 of the connecting sheet 40 in fig. 19 and the air volume and the air pressure. Since the connecting piece 40 of the laminar fan 100 in fig. 19 is a double-arc blade 401, the distance between the two ends of the inner arc 41 and the distance between the two ends of the back arc 42 are the same, and the length of the chord line 51 may be the distance between the two ends of the inner arc 41 or the back arc 42. In fig. 20, the abscissa axis bladchord refers to the length of the chord line 51 of the connecting piece 40 of the laminar flow fan 100, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 20 is a schematic diagram showing the relationship between the length of the chord line 51 and the wind volume and the wind pressure when the outer diameter, the inner diameter, the number of layers, the distance, the thickness of the annular disk 10, the installation angle of the connecting sheet 40, and the rotation speed of the laminar flow motor 20 of the laminar flow fan 100 are all kept unchanged. The mounting angle of the connecting piece 40 of the present embodiment may be: on the same cross section of the connecting sheet 40 and the annular disk 10, a chord line 51 between both ends of the inner arc 41 forms an angle with an outer diameter 52 of the annular disk 10 passing through a midpoint of the chord line 51.
When the above-mentioned parameters are all kept unchanged, for example, in a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the inner diameter of the annular disk 10 is 115 mm, the number of layers of the annular disks 10 is 8, the pitch of the annular disks 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the installation angle of the connecting piece 40 is 25.5 °, and the rotation speed of the laminar flow motor 20 is 1000rpm, it can be found that after the length of the chord line 51 is increased, both the air volume and the air pressure are greatly improved, and are substantially linear. Considering the limited space inherent in the floor air conditioner indoor unit 300, there is a certain constraint on the overall occupied volume of the laminar flow fan 100. When the outer diameter and the inner diameter of the annular disk 10 are constant, the longer the chord 51 is, the greater the air volume and the wind pressure of the laminar flow fan 100 are, but the length of the chord 51 is also restricted to a certain extent, so that the connecting piece 10 does not penetrate the annular disk 10 excessively, which leads to a decrease in the stability of the laminar flow fan 100. In summary, the length of the chord line 51 can be set to the maximum range that can be achieved, so that the air volume and the air pressure of the laminar flow fan 100 can meet the use requirements of users.
Thus, in the preferred embodiment described above, the chord line 51 length is set to the maximum range achievable while ensuring the stability of the laminar flow fan 100: 40 mm to 42 mm. When the length of the chord line 51 is set to 42 mm, the air volume of the laminar flow fan 100 may be 1741m3And h, the wind pressure can reach 118.9Pa, and the use requirements of users can be completely met. At this time, the difference between the outer diameter and the inner diameter of the annular disk 10 is 60 mm, and the length of the chord line 51 is set to 42 mm, so that the distances between the two ends of the inner arc 41 and the back arc 42 and the inner circumference and the outer circumference of the annular disk 10 are about 9 mm respectively, where the distances are between the two ends of the inner arc 41 and the back arc 42 and the inner circumference and the outer circumference of the annular disk 10On the premise of ensuring the stability of the laminar flow fan 100, the length of the chord line 51 is set to the maximum range which can be reached, so that the air volume and the air pressure of the laminar flow fan 100 can meet the use requirements of users.
Fig. 21 is a schematic view showing the relationship between the installation angle α of the connecting piece 40 in fig. 19 and the air volume and the air pressure. Since the connection piece 40 of the laminar flow fan 100 in fig. 19 may be a double-arc blade 401, the installation angle α of the connection piece 40 actually means: on the same cross section of the bi-arc blade 401 and the annular disc 10, a chord line 51 between the two ends of the inner arc 41 forms an angle with the outer diameter 52 of the annular disc 10 passing through the midpoint of the chord line 51. The axis of abscissa (α) in fig. 21 refers to the installation angle of the bi-arc blade 401 of the laminar fan 100, i.e., the included angle formed by the chord line 51 between the two ends of the inner arc 41 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 on the same cross section of the bi-arc blade 401 and the annular disk 10. The left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 21 is a schematic diagram illustrating the relationship between the installation angle α and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the chord length of the bi-arc blade 401, and the rotation speed of the laminar flow motor 20 of the annular disk 10 of the laminar flow fan 100 are all kept unchanged. The chord length of the double-arc blade 401 of the present embodiment may be the straight distance between both end points of the inner arc 41 or the back arc 42.
In the case where each of the above-mentioned parameters is kept constant, for example, in a preferred embodiment, the outer diameter of the ring-shaped disk 10 of the laminar fan 100 is 175 mm, the inner diameter of the ring-shaped disk 10 is 115 mm, the number of layers of the ring-shaped disks 10 is 8, the pitch of the ring-shaped disks 10 is 13.75 mm, the thickness of the ring-shaped disk 10 is 2 mm, the chord length of the double-circular-arc blade 401 is 35 mm, and the rotation speed of the laminar flow motor 20 is 1000rpm, at which the mounting angle α of the double-circular-arc blade 401 may be set to-5 ° to 55 ° in consideration of the comprehensive air volume and the wind pressure. In addition, when a chord line 51 between two end points of the inner arc 41 and an outer diameter 52 of the annular disk 10 passing through a midpoint of the chord line 51 are sequentially arranged along the rotation direction of the annular disk 10, the installation angle alpha is a positive number; the installation angle α is a negative number when the outer diameter 52 of the annular disk 10 passes through the midpoint of the chord line 51 and the chord line 51 between the two end points of the inner arc 41 in this order in the direction in which the annular disk 10 rotates.
Fig. 22 is a schematic cross-sectional view of a laminar flow fan 100 having an aero blade 402, and fig. 23 is a schematic cross-sectional view of an installation angle α of the aero blade 402 of the laminar flow fan 100 in fig. 22 with respect to an air volume and an air pressure. In a particular embodiment, the connecting piece 40 may also be an aerospace blade 402. The cross section of the aviation blade 402 has a double arc protruding towards the direction of rotation of the annular disk 10, and the double arc includes an inner arc 41 and a back arc 42 sequentially arranged along the direction of rotation of the annular disk 10, the inner arc 41 and the back arc 42 have different circle centers, and both ends are intersected. Fig. 22 is a schematic cross-sectional view of laminar fan 100 viewed from above, in which laminar flow motor 20 drives annular disk 10 to rotate clockwise, and back arcs 42 and inner arcs 41 project in the same direction as annular disk 10. In other embodiments, the laminar flow motor 20 may also drive the annular disk 10 to rotate counterclockwise, and the protruding directions of the back arc 42 and the inner arc 41 may be opposite to those shown in fig. 22.
The mounting angle α of the aircraft blade 402 in fig. 23 actually refers to: on the same cross section of the aero blade 402 and the annular disc 10, a chord line 51 between the ends of the inner or back arcs 41, 42 forms an angle with the outer diameter 52 of the annular disc 10 passing through the midpoint of the chord line 51. The axis of abscissa (α) in fig. 23 refers to the installation angle of the aircraft blade 402 of the laminar fan 100, i.e., the included angle formed by the chord line 51 between the two end points of the inner arc 41 or the back arc 42 and the outer diameter 52 of the annular disk 10 passing through the midpoint of the chord line 51 on the same cross section of the aircraft blade 402 and the annular disk 10. The left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Specifically, fig. 23 is a schematic diagram illustrating the relationship between the installation angle α and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness of the annular disk 10, the chord length of the aviation blade 402, and the rotation speed of the laminar flow motor 20 of the laminar flow fan 100 are all kept constant. The chord length of the aero blade 402 of this embodiment may be the linear distance between the two ends of the inner or back arcs 41, 42, i.e., the length of the chord line 51.
In the case where each of the above-mentioned parameters is kept constant, for example, in a preferred embodiment, the outer diameter of the annular disk 10 of the laminar fan 100 is 175 mm, the inner diameter of the annular disk 10 is 115 mm, the number of layers of the annular disks 10 is 8, the pitch of the annular disks 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, the chord length of the aero blade 402 is 35 mm, and the rotation speed of the laminar motor 20 is 1000rpm, at which time the installation angle α of the aero blade 402 may be set to-50 ° to 15 ° in consideration of the wind pressure and the wind volume.
Fig. 24 is a schematic view of the connection between the laminar flow fan 100 and the laminar flow motor 20 with gradually changed pitches of the plurality of annular disks 10, fig. 25 is a schematic view of the connection between the laminar flow fan 100 and the laminar flow motor 20 in fig. 24 from another view,
fig. 26 is a schematic diagram showing the relationship between the gradual pitch change of the plurality of annular disks 10 and the air volume and the air pressure of the laminar fan 100 in fig. 24.
As shown in fig. 24 and 25, the connection member of the laminar flow fan 100 may also be a connection rod 60. The connecting rods 60 may also be provided in plurality, and penetrate through the driving disk 30 and the plurality of annular disks 10 at even intervals, so as to ensure that the connection relationship between the driving disk 30 and the plurality of annular disks 10 is stable, and further ensure that the driving disk 30 can stably drive the plurality of annular disks 10 to rotate when the laminar flow motor 20 drives the driving disk 30 to rotate, thereby improving the operational reliability of the laminar flow fan 100. As the distance between two adjacent annular disks 10 gradually increases from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 can be effectively increased, so that the air outlet of the laminar flow fan 100 meets the use requirement of a user. In a preferred embodiment, the distance between two adjacent annular disks 10 has the same variation, that is, the distance between two adjacent annular disks 10 increases from one side away from the driving disk 30 to the other side.
In fig. 26, the abscissa axis damping uniform expansion Plate distance increment refers to the amount of change in the distance between two adjacent ring disks 10 in the direction from one side away from the driving disk 30 to the other side, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure refers to the air Pressure. Also, the variation amount of the pitch between two adjacent annular disks 10 is the same, that is, the increase or decrease of the pitch between two adjacent annular disks 10 is the same.
Specifically, fig. 26 is a schematic diagram illustrating the relationship between the gradual change of the pitch of the plurality of annular disks 10 and the air volume and the air pressure when the outer diameter, the inner diameter, the number, the thickness of the annular disks 10 of the laminar flow fan 100 and the rotation speed of the laminar flow motor 20 are all kept constant. As shown in fig. 26, when the above-mentioned parameters are all kept constant, the distance between every two adjacent ring disks 10 in the plurality of ring disks 10 gradually changes from one side far from the driving disk 30 to the other side, and the influence on the air volume is large and the influence on the air pressure is small. When the variation of the spacing between two adjacent annular disks 10 in the direction from the side away from the driving disk 30 to the other side, which is indicated by the axis of abscissa, is a positive number, it is described that the spacing between each two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from the side away from the driving disk 30 to the other side; when the amount of change in the pitch between two adjacent ring disks 10 in the direction from the side away from the driver disk 30 to the other side, which is indicated by the abscissa axis, is a negative number, it is described that the pitch between each two adjacent ring disks 10 in the plurality of ring disks 10 gradually decreases from the side away from the driver disk 30 to the other side.
As can be seen from fig. 26, when the pitch variation amounts between every two adjacent annular disk sheets 10 in the plurality of annular disk sheets 10 are-1 mm, 1 mm and 2 mm, the air volume and the air pressure of the laminar flow fan 100 are both greatly improved. The interval between every two adjacent ring disks 10 in the plurality of ring disks 10 is set to gradually increase from one side far from the driving disk 30 to the other side, considering the air volume and the air pressure of the laminar flow fan 100 together. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the inner diameter of the annular disk 10 is 115 mm, the number of the annular disks 10 is 8, the thickness of the annular disk 10 is 2 mm, and the rotation speed of the laminar flow motor 20 is 1000rpm (revolutions per minute), and at this time, in comprehensive consideration of the air volume and the air pressure of the laminar flow fan 100, the distance between two adjacent annular disks 10 in the 8 annular disks 10 may be set sequentially from one side far away from the driving disk 30 to the other side: the distance between two adjacent annular disks 10 is gradually increased by 1 mm from one side far away from the drive disk 30 to the other side, namely, the distance between two adjacent annular disks 10 is 13.75 mm, 14.75 mm, 15.75 mm, 16.75 mm, 17.75 mm, 18.75 mm and 19.75 mm. It should be noted that, the distance between two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from the side away from the driving disk 30 to the other side, which actually means that the distance between two adjacent annular disks 10 gradually increases along the direction of the airflow flowing in the air inlet channel 11.
Fig. 27 is a partial sectional view of a laminar flow fan 100 with gradually changing inner diameters of a plurality of annular disks 10, and fig. 28 is a schematic diagram of the relationship between the gradual change of the inner diameters of the plurality of annular disks 10 and the air volume and the air pressure of the laminar flow fan 100 in fig. 27. As the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 can be effectively increased, so that the air outlet of the laminar flow fan 100 meets the use requirement of a user. In a preferred embodiment, the inner diameters of two adjacent annular disks 10 vary by the same amount, that is, the inner diameters of the annular disks 10 decrease from the side away from the driving disk 30 to the other side by the same amount.
In fig. 28, the abscissa axis damping uniform expansion Inner radius increment refers to the variation of the Inner diameter of each ring disc 10 and the Inner diameter of the ring disc 10 adjacent to the lower side, the left ordinate axis Mass flow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the air Pressure. In particular, the amount of the solvent to be used,
fig. 28 is a schematic diagram showing the relationship between the gradual change of the inner diameter of the plurality of ring disks 10 and the wind volume and wind pressure when the outer diameter, the pitch, the number, the thickness of the ring disks 10 of the laminar flow fan 100 and the rotation speed of the laminar flow motor 20 are all kept constant. As shown in fig. 28, when the above-mentioned parameters are all kept constant, the inner diameters of the plurality of annular disks 10 gradually change from one side away from the driving disk 30 to the other side, and the influence on the air volume is large and the influence on the air pressure is small. When the variation of the inner diameter of each annular disk 10 represented by the abscissa axis and the inner diameter of the adjacent annular disk 10 below is a positive number, it means that the inner diameters of the plurality of annular disks 10 gradually increase from one side away from the driving disk 30 to the other side; when the change amount of the inner diameter of each ring disk 10 shown by the abscissa axis and the inner diameter of the ring disk 10 adjacent below is a negative number, it means that the inner diameters of the plurality of ring disks 10 gradually decrease from one side away from the driving disk 30 to the other side.
As can be seen from fig. 28, when the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the driving disk 30 to the other side, the air volume of the laminar flow fan 100 increases and the air pressure decreases slightly; when the inner diameters of the plurality of ring disks 10 gradually increase from one side away from the driving disk 30 to the other side, the wind pressure of the laminar flow fan 100 slightly increases and the wind volume greatly decreases. Thus, the inner diameters of the plurality of ring disks 10 are set to be gradually reduced from one side away from the driving disk 30 to the other side in consideration of the air volume and the air pressure of the laminar flow fan 100.
In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the pitch of the annular disks 10 is 13.75 mm, the number of the annular disks 10 is 8, the thickness of the annular disk 10 is 2 mm, and the rotation speed of the laminar flow motor 20 is 1000rpm (revolutions per minute), and at this time, the variation between the inner diameter of each annular disk 10 and the inner diameter of the adjacent annular disk 10 below may be set to be-5 mm in consideration of the air volume and the air pressure of the laminar flow fan 100. That is, the inner diameters of the 8 annular disks 10 from one side to the other side away from the driving disk 30 can be set as follows: the inner diameter of each annular disk 10 is reduced by 5mm from the inner diameter of the adjacent annular disk 10 below, by 115 mm, 110 mm, 105 mm, 100 mm, 95 mm, 90 mm, 85 mm, and 80 mm. It should be noted that the distance between the annular disks 10 in the above description specifically refers to the distance between two adjacent annular disks 10. It should be emphasized that the inner diameters of the plurality of annular disks 10 gradually decrease from one side away from the driving disk 30 to the other side, which means that the inner diameters of the plurality of annular disks 10 gradually decrease along the direction of the airflow flowing in the air inlet channel 11.
Fig. 29 is a schematic diagram of a central angle of a connecting line of an inner diameter and an outer diameter of a plurality of annular disks 10 of the laminar flow fan 100 in which the annular disks 10 are arc-shaped disks on the same longitudinal section passing through a central axis, and fig. 30 is a schematic diagram of a relationship between the central angle and air volume and air pressure in fig. 29. Each of the ring disks 10 of the laminar flow fan 100 in fig. 29 is an arc-shaped disk which gradually approaches the driving disk 30 from the center to the edge and protrudes toward one side of the driving disk 30. Compared with a plane disk, the arc disk can enable the angle of external air entering the laminar flow fan 100 to better accord with the flow of fluid, so that the external air can enter the laminar flow fan 100 more conveniently, and the air volume loss is effectively reduced. Further, the inner diameters of the plurality of annular disks 10 are gradually reduced from one side away from the driving disk 30 to the other side, and the inner and outer diameters of the plurality of annular disks 10 on the same longitudinal section passing through the central axis form a central angle θ.
In fig. 30, the abscissa axis θ indicates a central angle of a line connecting the inner and outer diameters of the plurality of annular disks 10 on the same vertical section passing through the central axis, the left ordinate axis Mass flow rate indicates an air volume, and the right ordinate axis Pressure means an air Pressure. Specifically, fig. 30 is a schematic diagram showing the relationship between the central angle θ and the air volume and the air pressure when the outer diameter, the number of layers, the pitch, the thickness of the annular disk 10 of the laminar fan 100 and the rotation speed of the laminar motor 20 are all kept constant. As shown in fig. 30, when the above-mentioned parameters are all kept constant, as the central angle θ is gradually increased, the air volume of the laminar flow fan 100 is increased and then decreased, and the air pressure slightly increases. In a preferred embodiment, the outer diameter of the annular disk 10 of the laminar flow fan 100 is 175 mm, the number of layers of the annular disk 10 is 10, the pitch of the annular disks 10 is 13.75 mm, the thickness of the annular disk 10 is 2 mm, and the rotation speed of the laminar flow motor 20 is 1000rpm (revolutions per minute), and in consideration of the air volume and the air pressure, the central angle θ of the inner and outer diameter connecting lines of the plurality of annular disks 10 on the same longitudinal section passing through the central axis may be set to be 9 ° to 30 °. As shown in fig. 30, when the central angle θ is set to 15 °, the air volume of the laminar flow fan 100 reaches the maximum value.
The indoor unit 300 of the floor air conditioner of the embodiment includes: a housing 310, the interior of which defines a cavity, and the upper and lower parts of the housing 310 are provided with air outlets 320, and the middle part of the housing 310 is provided with an air inlet 330, the housing 310 includes a front panel 311, a rear shell 312, a top plate 313 and a bottom plate 314; an evaporator 382 disposed inside the cavity corresponding to the air inlet 330, configured to exchange heat with air entering the cavity through the air inlet 330, wherein the evaporator 382 is flat and parallel to the front panel 311; and two laminar flow fans 110 respectively disposed above and below the evaporator 382, configured to form laminar flow air from the air heat exchanged by the evaporator 382 by using a viscous effect, and to blow the laminar flow air out of the air outlet 320. The vertical air conditioner indoor unit 300 is provided with the laminar flow fan 110, laminar flow air supply is realized through a viscous effect, the noise in the air supply process is low, the air volume is high, and the use experience of a user is effectively improved.
Further, in the indoor unit 300 of the floor air conditioner of the present embodiment, the casing 310 is provided with an air outlet 320 at the upper part and/or the lower part thereof around the circumference of the laminar flow fan 100; or the floor air conditioner indoor unit 300 may further include: at least one wind shielding member disposed outside the at least one laminar flow fan 100 and having a gap 373; the housing 310 is provided with an air outlet 320 at a position corresponding to the notch 373. The indoor unit 300 of the floor air conditioner is provided with air outlets 320 at the upper and lower parts, so that the air can be discharged from the upper and lower parts, and the air output can be increased. The rear shell 312 includes a rear panel 315 and two side panels 316. The air inlet 330 may be disposed on the rear panel 315 to realize single-sided air inlet. The flat plate-shaped evaporator 382 is matched with the air inlet 330, so that air entering the cavity through the air inlet 330 can exchange heat through the evaporator 382. The flat plate evaporator 382 also effectively reduces the volume occupied inside the cavity. The laminar flow fan 110 includes a laminar flow fan 100 and a laminar flow motor 20, and the laminar flow fan 100 is disposed inside a cavity corresponding to the air outlet 320, and can realize air outlet at upper and lower portions. The laminar flow motor 20 is fixed between the fixing frame 350 and the fixing plate 340, wherein the center of the fixing frame 350 is provided with a through hole 352, and the output shaft 21 of the laminar flow motor 20 passes through the through hole 352 and then is fixed with the driving disc 30 of the laminar flow fan 100, so that the connection firmness of the laminar flow fan 100 and the laminar flow motor 20 can be effectively enhanced, and the overall working reliability is improved.
Further, in the floor air conditioner 300 of the present embodiment, the plurality of annular disks 10 of the laminar flow fan 100 may be arranged according to one or more of the following structures: the inner diameter of the plurality of annular disks 10 is gradually reduced from one side far away from the driving disk 30 to the other side; the distance between two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from one side far away from the driving disk 30 to the other side; each of the annular disks 10 is an arc-shaped disk which gradually approaches the driving disk 30 from the center to the edge and protrudes toward one side of the driving disk 30. The above-mentioned form of setting up a plurality of annular disks 10 all can effectively promote laminar flow fan 100's amount of wind for laminar flow fan 100's air-out satisfies user's user demand. In addition, the connecting piece may be a connecting piece 40, and the cross section of the connecting piece 40 has two curves sequentially arranged along the rotation direction of the annular disk 10, and the chord length of the two curves is in a linear relation with the air quantity generated by the laminar flow fan 100. The connecting sheet 40 is arranged to effectively increase the wind pressure of the laminar flow fan 100, so that after laminar flow wind blows out through the gaps among the plurality of annular disks 10, the air outside the laminar flow fan 100 is pressed into the annular disks 10 through the air inlet channel 11 due to the action of pressure difference, and the circulation is repeated, thereby forming laminar air circulation. The plurality of air outlets 12 formed by the gaps between the plurality of annular disks 10 can enable the laminar flow fan 100 to realize 360-degree air supply, avoid various uncomfortable symptoms caused by direct blowing of air supply by the air conditioner, and further improve the use experience of users.
It should be understood by those skilled in the art that, unless otherwise specified, terms used to indicate orientation or positional relationship in the embodiments of the present invention such as "up," "down," "left," "right," "front," "rear," and the like are based on the actual usage state of the indoor unit 300 of the vertical air conditioner, and these terms are only used for convenience of describing and understanding the technical solution of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore, should not be construed as limiting the present invention.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (13)

1. An indoor unit of a floor type air conditioner, comprising:
the air conditioner comprises a shell, a front panel, a rear shell, a top plate and a bottom plate, wherein a cavity is defined in the shell, air outlets are formed in the upper portion and the lower portion of the shell, an air inlet is formed in the middle of the shell, and the shell comprises the front panel, the rear shell, the top plate and the bottom plate;
the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat for air entering the cavity through the air inlet, and the evaporator is flat and parallel to the front panel; and
two laminar flow fans respectively arranged above and below the evaporator and configured to utilize a viscosity effect to enable air subjected to heat exchange by the evaporator to form laminar flow air and enable the laminar flow air to be blown out from the air outlet,
each laminar flow fan all includes laminar flow fan and laminar flow motor, wherein two the laminar flow fan sets up respectively in corresponding upper portion and lower part the air outlet inside the cavity, the laminar flow fan includes: a plurality of annular disks disposed in parallel spaced apart from each other and having the same central axis; the driving discs are arranged on one side of the annular discs at intervals in parallel; and a connecting member penetrating the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk,
the connecting piece is a connecting piece, the cross section of the connecting piece is provided with two sections of curves which are sequentially arranged along the rotating direction of the annular disc, and the chord length of the two sections of curves and the air volume generated by the laminar flow fan are in a linear relation.
2. An indoor unit for a floor air conditioner according to claim 1,
the rear case includes: a back panel and two side panels, an
The air inlet is formed in the rear panel to achieve single-side air inlet.
3. The indoor unit of claim 1, further comprising:
and a first partition plate disposed between the evaporator and the front panel to prevent air, which exchanges heat through the evaporator, from flowing to the front of the cavity.
4. An indoor unit for a floor air conditioner according to claim 3,
the two evaporators are vertically arranged in the cavity and are connected with each other
The indoor unit of the floor air conditioner further comprises: and the second partition plate is arranged between the two evaporators and is configured to prevent the two evaporators from influencing each other.
5. An indoor unit for a floor air conditioner according to claim 1,
the centers of the annular disks form an air inlet channel together, and air in the cavity enters gaps among the annular disks through the air inlet channel; and
and the two laminar flow motors are respectively connected with the two laminar flow fans and are configured to drive the plurality of annular discs to rotate, so that the air boundary layers close to the surfaces of the plurality of annular discs rotationally move from inside to outside, and laminar flow wind is blown out from the air outlet.
6. An indoor unit for a floor air conditioner according to claim 5,
the laminar flow motor is further configured to: the driving disc is directly driven to rotate, and the driving disc drives the annular discs to rotate.
7. The indoor unit of claim 6, further comprising:
the fixing plate is provided with a plurality of reinforcing ribs on one side and a plurality of clamping grooves on the other side; and
the fixing frame faces one side of the fixing plate and is provided with a plurality of clamping jaws corresponding to the clamping grooves, so that the plurality of clamping jaws are respectively screwed with the plurality of clamping grooves and then fix the laminar flow motor between the fixing frame and the fixing plate, a through hole is formed in the center of the fixing frame, and an output shaft of the laminar flow motor penetrates through the through hole and then is fixed with the driving disc.
8. The indoor unit of claim 5, further comprising:
and the air guide ring is arranged between the evaporator and the laminar flow fan and is configured to guide air subjected to heat exchange through the evaporator to enter the air inlet channel.
9. An indoor unit for a floor air conditioner according to claim 5,
the upper part and/or the lower part of the shell surrounds the laminar flow fan for one circle and is provided with the air outlet; or
The indoor unit of the floor air conditioner further comprises: the wind shielding piece is arranged outside the laminar flow fan and provided with a notch; the shell is provided with the air outlet at the position corresponding to the notch.
10. An indoor unit for a floor air conditioner according to claim 6,
the center of the driving disc faces the annular discs to form a groove, and the laminar flow motor is fixedly arranged in the groove.
11. An indoor unit for a floor air conditioner according to claim 6,
the surface of the drive disk facing the laminar flow motor is planar, and the surface facing the plurality of annular disks has a conical projection to guide the flow of air entering the laminar flow fan and assist in forming the laminar flow wind.
12. An indoor unit for a floor air conditioner according to claim 6,
the cross section of the connecting piece is provided with double arcs which are sequentially arranged along the rotating direction of the annular disc: the inner arc and the back arc are both convex towards the rotating direction of the annular disc, and have the same circle center and are arranged in parallel or have different circle centers and are intersected at two ends.
13. The indoor unit of claim 6, wherein the plurality of annular discs are arranged according to one or more of the following structures:
the inner diameters of the annular discs are gradually reduced from one side far away from the driving disc to the other side;
the distance between two adjacent annular disks in the plurality of annular disks is gradually increased from one side far away from the driving disk to the other side;
each annular disc is an arc disc which is gradually close to the driving disc from the center to the edge and protrudes towards one side of the driving disc.
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