CN111442390A - Wall-mounted air conditioner indoor unit - Google Patents
Wall-mounted air conditioner indoor unit Download PDFInfo
- Publication number
- CN111442390A CN111442390A CN201910045796.5A CN201910045796A CN111442390A CN 111442390 A CN111442390 A CN 111442390A CN 201910045796 A CN201910045796 A CN 201910045796A CN 111442390 A CN111442390 A CN 111442390A
- Authority
- CN
- China
- Prior art keywords
- laminar flow
- air
- annular
- flow fan
- indoor unit
- 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.)
- Granted
Links
- 230000000694 effects Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 16
- 239000011295 pitch Substances 0.000 description 16
- 230000007423 decrease Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 238000007664 blowing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000000418 atomic force spectrum Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
- F24F1/0059—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
- 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
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
The invention provides a wall-mounted air conditioner indoor unit. Wherein the wall-mounted air conditioner indoor unit includes: the air conditioner comprises a shell, a fan and a controller, wherein a cavity is defined in the shell, the shell comprises a front panel and a rear shell, the rear shell is provided with an air inlet, and the front panel is defined with an air outlet; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat with air entering the cavity through the air inlet, the evaporator is provided with a peripheral wall and a bottom wall, the bottom wall is parallel to the front panel, and a front opening of the evaporator faces towards the front panel; and the laminar flow fan is arranged in the cavity, is positioned on the front side of the evaporator, and is configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and blow the laminar flow air out of the air outlet. The wall-mounted air conditioner indoor unit is provided with the laminar flow fan, laminar flow air supply is realized through a viscous effect, and the noise is low and the air volume is high in the air supply process; the cover buckle type evaporator is matched with the air inlet, so that the heat exchange area is large, the air inlet is relatively uniform, and the air can be efficiently exchanged and supplied.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an indoor unit of a wall-mounted 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 existing air conditioner adjusting device mainly comprises various types of air conditioners and fans, and because the indoor unit of the wall-mounted air conditioner is generally hung on the wall of a room and does not need to occupy the space at the bottom of the room, the air conditioner adjusting device is more and more widely applied. However, the indoor unit of the current wall-mounted air conditioner mainly adopts a cross-flow fan to supply air, and the cross-flow fan often has the following problems: the air outlet direction is right ahead, although the left and right flow guide of the swing blade is provided, the upper and lower flow guide of the air deflector is limited by the volute structure, the left and right air supply angle is less than 80 degrees, and the upper and lower air supply angle is less than 100 degrees, so the air supply range is very limited; due to the long strip-shaped air outlet form, the air quantity is concentrated, so that the air speed is high, the air is difficult to avoid people, and the phenomenon that the air is blown directly to people is serious; the conventional cross-flow fan mainly comprises forward blades, the blades periodically impact passing air flow to generate obvious rotating noise, the volute is matched with the cross-flow fan to achieve an air supply effect, the front volute tongue and the rear volute tongue can impact the air flow to generate strong turbulence noise, and the noise value is close to the limit under the limitation of performance indexes.
Disclosure of Invention
The invention aims to provide a wall-mounted air conditioner indoor unit with low noise, high air volume and high air pressure.
A further object of the present invention is to provide a wall-mounted air conditioner with uniform and soft air outlet to satisfy the comfort requirement of users.
In particular, the present invention provides a wall-mounted type air conditioner indoor unit, comprising: the air conditioner comprises a shell, a fan and a controller, wherein a cavity is defined in the shell, the shell comprises a front panel and a rear shell, the rear shell is provided with an air inlet, and the front panel is defined with an air outlet; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat with air entering the cavity through the air inlet, the evaporator is provided with a peripheral wall and a bottom wall, the bottom wall is parallel to the front panel, and a front opening of the evaporator faces towards the front panel; and the laminar flow fan is arranged in the cavity, is positioned on the front side of the evaporator, and is configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and blow the laminar flow air out of the air outlet.
Optionally, the housing further comprises a top plate and a bottom plate, the rear housing comprising: the air inlet is arranged on the top plate, the bottom plate, the rear panel and the two side panels to realize five-side air inlet.
Optionally, the laminar flow fan includes a laminar flow fan and a laminar flow motor, and the 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 laminar flow motor is configured to drive the plurality of annular discs to rotate so as to enable the air boundary layer 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 wall-mounted air conditioner indoor unit further comprises: the volute is internally provided with a laminar flow fan, and the rear part of the volute is provided with an inlet which is arranged corresponding to the air inlet channel so that air in the cavity enters the air inlet channel through the inlet; a gap is formed between the circumferential direction of the laminar flow fan and the inner wall of the front part of the volute, so that laminar flow air flows to the air outlet through the gap.
Optionally, the wall-mounted air conditioner indoor unit 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 in the clamping grooves.
Optionally, the wall-mounted air conditioner indoor unit further comprises: the shielding piece covers the front side of the fixing plate, a gap is formed in the center of the front panel, and the shielding piece and the front panel jointly limit 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, a groove is formed in the center of the driving disc towards the plurality of annular discs, and the laminar flow motor is fixedly arranged in the groove; or the surface of the driving disc facing the laminar flow motor is a plane, and the surface facing the plurality of annular discs is provided with a conical bulge part so as to guide the air flow entering the laminar flow fan and assist the formation of 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 wall-mounted air conditioner indoor unit of the invention comprises: the air conditioner comprises a shell, a fan and a controller, wherein a cavity is defined in the shell, the shell comprises a front panel and a rear shell, the rear shell is provided with an air inlet, and the front panel is defined with an air outlet; the evaporator is arranged in the cavity corresponding to the air inlet and is configured to exchange heat with air entering the cavity through the air inlet, the evaporator is provided with a peripheral wall and a bottom wall, the bottom wall is parallel to the front panel, and a front opening of the evaporator faces towards the front panel; and the laminar flow fan is arranged in the cavity, is positioned on the front side of the evaporator, and is configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and blow the laminar flow air out of the air outlet. The wall-mounted air conditioner indoor unit is provided with the laminar flow fan, laminar flow air supply is realized through the viscidity effect, and air supply process noise is little, the wind gauge height, effectively promotes user's use and experiences.
Furthermore, the laminar flow fan of the wall-mounted air conditioner indoor unit comprises a laminar flow fan and a laminar flow motor, and the laminar flow motor is fixed between the fixing frame and the fixing plate. In addition, the laminar flow motor is fixed with the drive disc of laminar flow fan, can effectively strengthen laminar flow fan and laminar flow motor's firm in connection degree, promotes whole operational reliability. The casing still includes roof and bottom plate, and the backshell includes: the air inlet is arranged on the top plate, the bottom plate, the rear panel and the two side panels, so that five-side air inlet is realized, and the air inlet amount is effectively increased. The cover buckle type evaporator is matched with the air inlet, so that air entering the cavity through the air inlet can exchange heat through the evaporator. The heat exchange area is large, the air inlet is relatively uniform, the same refrigerating and heating capacity is realized, and the air supply volume can be reduced due to the large heat exchange area and the large heat exchange volume, so that the rotating speed of the laminar flow motor can be reduced, the noise is reduced, and the laminar flow motor is suitable for low air volume, low noise and high-efficiency heat exchange air supply.
Furthermore, in the wall-mounted air conditioner indoor unit of the present invention, the plurality of annular disks of the laminar flow fan may 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. And the circumference of the laminar flow fan of the wall-mounted air conditioner indoor unit and the inner wall of the front part of the volute for accommodating the laminar flow fan form a gap, so that laminar flow air flows to the air outlet through the gap, the air outlet of the wall-mounted air conditioner indoor unit is uniform and soft, the pressure loss is low, the air volume is large, and the comfort requirement of a user is met.
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 view illustrating an overall structure of a wall-mounted type air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is a side sectional view of the wall-mounted air conditioner indoor unit of fig. 1;
fig. 3 is a partial schematic view of the indoor unit of the wall-mounted air conditioner of fig. 1;
fig. 4 is an exploded view of the components of the wall-mounted air conditioner indoor unit of fig. 1;
fig. 5 is a schematic view illustrating an air circulation of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating the blowing principle of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
fig. 7 is a graph illustrating a speed profile and a force profile of a laminar flow fan in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a laminar flow fan with a drive disk having a groove;
FIG. 9 is a schematic view of the laminar flow fan of FIG. 8 from another perspective;
FIG. 10 is a schematic view of the laminar flow fan of FIG. 8 from a further perspective;
FIG. 11 is a cross-sectional view of the laminar flow fan of FIG. 8;
FIG. 12 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. 13 is a schematic view of the laminar flow fan of FIG. 12 from another perspective;
FIG. 14 is a cross-sectional schematic view of the laminar flow fan of FIG. 12;
FIG. 15 is a schematic diagram of the relationship between the length of the string line of the connecting piece in FIG. 14 and the wind quantity and pressure;
FIG. 16 is a schematic view showing the relationship between the installation angle of the connecting piece of FIG. 14 and the air volume and the air pressure;
FIG. 17 is a cross-sectional schematic view of a laminar flow fan having aero blades;
FIG. 18 is a schematic view of the aero blade installation angle of the laminar flow fan of FIG. 17 in relation to air flow and wind pressure;
FIG. 19 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. 20 is a schematic view of the laminar flow fan of FIG. 19 coupled to a laminar flow motor from another perspective;
FIG. 21 is a schematic diagram showing the relationship between the gradual change of the pitch of a plurality of annular disks and the wind volume and pressure of the laminar flow fan in FIG. 19;
FIG. 22 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. 23 is a schematic diagram of the inner diameter gradient of a plurality of annular disks of the laminar flow fan of FIG. 22 in relation to air flow and air pressure;
FIG. 24 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. 25 is a schematic diagram showing the relationship between the central angle and the air volume and the wind pressure in fig. 24.
Detailed Description
The embodiment provides a wall-hanging 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. 1 is a schematic view illustrating an overall structure of a wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention; fig. 2 is a side sectional view of the wall-mounted air conditioner indoor unit 300 of fig. 1; fig. 3 is a partial schematic view of the wall-mounted air conditioner indoor unit 300 of fig. 1; fig. 4 is an exploded view of the components of the wall-mounted air conditioner indoor unit 300 of fig. 1; fig. 5 is a schematic view illustrating air circulation of the laminar flow fan 100 in the wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention, fig. 6 is a schematic view illustrating an air blowing principle of the laminar flow fan 100 in the wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention, and fig. 7 is a velocity profile and a force profile of the laminar flow fan 100 in the wall-mounted type air conditioner indoor unit 300 according to an embodiment of the present invention. Fig. 8 is a structural view of a laminar flow fan 100 having grooves 32 in a driving disk 30, fig. 9 is a structural view of the laminar flow fan 100 in fig. 8 from another view, fig. 10 is a structural view of the laminar flow fan 100 in fig. 8 from yet another view, and fig. 11 is a sectional view of the laminar flow fan 100 in fig. 8. As shown in fig. 1 to 5, the wall-mounted air conditioner indoor unit 300 may generally include: a housing 310, an evaporator 385, and a laminar flow fan 110.
The housing 310 includes a front panel 311 and a rear housing 312, the rear housing 312 is provided with an air inlet 330, and the front panel defines an air outlet 320. In a particular embodiment, the housing 310 further includes a top panel 313 and a bottom panel 314, and the back shell 312 may include a back panel 315 and two side panels 316. The air inlet 330 may be disposed on the top plate 313, the bottom plate 314, the rear panel 315 of the rear case 312, and the two side panels 316 to realize five-sided air inlet. The air inlet 330 may be provided in the form of an air inlet grill, which can suck indoor air into the cavity through different directions and filter the air. It should be noted that the rear portion of the rear panel 315 may further be provided with a plurality of protruding columns 740 to form a certain gap with the wall, so that air can be introduced when the air inlet 330 is formed in the rear panel 315.
The evaporator 385 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. Wherein the evaporator 385 has a peripheral wall 386 and a bottom wall 387, the bottom wall 387 is parallel to the front panel 311 and the peripheral wall 386 is located at a side close to the front panel 311, i.e. the evaporator 385 is a hood-type. A water receiving tray (not shown) may be disposed below the evaporator 385 to receive condensed water generated from the evaporator 385.
The laminar flow fan 110 is disposed inside the cavity and in front of the evaporator 385, and configured to generate laminar flow air from the air heat exchanged by the evaporator 385 by using a viscosity effect, and to blow the laminar flow air out of the air outlet 320. The laminar flow fan 110 of this embodiment is actually located in front of the bottom wall 387 of the evaporator 385. The laminar flow fan 110 may include a laminar flow fan 100 and a laminar flow motor 20. Wherein 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 the laminar flow motor 20 is configured to drive the plurality of annular disks to rotate, so that the air boundary layer 13 close to the surfaces of the plurality of annular disks rotationally moves from inside to outside, and laminar flow wind is formed and blown out from the air outlet 320. It should be noted that, the plurality of annular disks 10 of the laminar flow fan 100 of the present embodiment are all disposed parallel to the front panel 311 or the rear panel 315, that is, the air inlet channel 11 is perpendicular to the front panel 311 or the rear panel 315.
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 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 wall-mounted air conditioner indoor unit 300 through the air outlet 320.
In a preferred embodiment, the wall-mounted air conditioner indoor unit 300 may further include: a volute 520, in which the laminar flow fan 100 is accommodated, and the rear part of the volute 520 is provided with an inlet 522 arranged corresponding to the air inlet channel 11, so that air in the cavity enters the air inlet channel 11 through the inlet 522; a gap 710 is formed between the circumferential direction of the laminar flow fan 100 and the inner wall of the front portion of the scroll 520, so that laminar air flows to the air outlet 320 through the gap 710. It should be noted that there is a gap between the scroll 520 and the evaporator, especially a gap between the rear part of the scroll 520 and the evaporator, so that the air exchanging heat through the evaporator can enter the air intake passage 11 through the inlet 522 at the rear part of the scroll 520.
As shown in fig. 5, 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. 8, 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.
A specific embodiment of a wall-mounted air conditioner indoor unit 300 will be described as follows:
as shown in fig. 1 to 4, the wall-mounted air conditioner indoor unit 300 of the present embodiment is provided with an evaporator 385, and the evaporator 385 is a hood-type evaporator having a peripheral wall 386 and a bottom wall 387, the bottom wall 387 being parallel to the front panel 311 and the peripheral wall 386 being located at a side close to the front panel 311. The air inlet 330 is disposed on the top plate 313, the bottom plate 314, the rear panel 315 of the rear housing 312, and two side panels 316, i.e., five-sided air inlet. That is, the evaporator 385 is disposed corresponding to the intake vent 330, and air entering the cavity from the intake vent 330 can exchange heat through the evaporator 385. The heat-exchanged air enters the air inlet channel 11 through the inlet 522 at the rear of the volute 520, and then enters between the annular disks of the laminar flow fan 100. Finally, the laminar flow fan 100 generates laminar flow wind flowing toward the outlet 320 through the gap 710.
As shown in fig. 5, 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 realize 360-degree air outlet, and further, the air flows to the air outlet 320 through the gap 710 formed by the circumferential direction of the laminar flow fan 100 and the inner wall of the front part of the volute 520, the air outlet is uniform and soft, and the comfort requirement of a user is met.
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. 7 shows a schematic diagram of the viscous shear force distribution τ (y) and velocity distribution u (y) to which the air boundary layer 13 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. 7 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 velocity of the air flow at each point in the air boundary layer 13, the thickness of the air boundary layer 13, τwThe variables y in τ (y) and u (y) refer to the height of the cross-section of boundary layer 13 in the direction perpendicular to the direction of travel, L is the distance between a point on the inner circumference of annular disk 10 and a point on the surface of annular disk 10, then τ (y) is the distribution of viscous shear forces experienced at the height y of the cross-section of boundary layer 13 at this distance L, and u (y) is the velocity distribution at the height y of the cross-section of boundary layer 13 at this distance L.
The wall-mounted air conditioner indoor unit 300 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 locking grooves (not shown in the figure). The reinforcing ribs 341 can effectively improve the firmness of the fixing plate 340. The fixing bracket 350 is provided with a plurality of clamping jaws 351 corresponding to the plurality of clamping slots on one side facing the fixing plate 340, so that the laminar flow motor 20 is fixed between the fixing bracket 350 and the fixing plate 340 after the plurality of clamping jaws 351 are respectively screwed in the plurality of clamping slots. With the laminar flow fan 100 shown in fig. 8 to 11, since the center of the driving disk 30 is formed with the groove 32 toward the plurality of annular disks 10, the laminar flow motor 20 is fixedly disposed in the groove 32 of the driving disk 30.
The wall-mounted air conditioner indoor unit 300 may further include: and a shielding member 720 covering the front side of the fixing plate 340. As shown in fig. 1 to 4, the front panel 311 has a hollow 750 in the center, and the shutter 720 and the front panel 311 together define the air outlet 320. And in a specific embodiment, the front panel 311 may have a circular void 750 in the center thereof, and the shroud 720 and the front panel 311 together define the annular outlet 320. It should be noted that the diameter of the circular opening 750 is larger than the outer diameter of the annular disk 10, and preferably, is the same as the diameter of the front aperture of the volute 520.
Fig. 12 is a schematic view of the connection between the laminar flow fan 100 having the circular disk 30 with the conical protrusion 31 and the laminar flow motor 20, fig. 13 is a schematic view of the laminar flow fan 100 from another view angle in fig. 12, and fig. 14 is a schematic cross-sectional view of the laminar flow fan 100 in fig. 12. The surface of the driving disk 30 of the laminar flow fan 100 in fig. 12 to 14 facing the laminar flow motor 20 is a plane, 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. 12 to 14, since the surface of the drive disk 30 facing the laminar flow motor 20 is a plane, the laminar flow motor 20 is fixedly disposed on the plane side of the drive disk 30. In the laminar flow fan 100 shown in fig. 12 to 14, 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. 14, 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. 14 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. 14.
Fig. 15 is a schematic diagram showing the relationship between the length of the chord line 51 of the connecting sheet 40 in fig. 14 and the air volume and the air pressure. Since the connecting piece 40 of the laminar fan 100 in fig. 14 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. 15, the abscissa axis bladechard indicates the length of the chord line 51 of the connecting sheet 40 of the laminar flow fan 100, the left ordinate axis Mass flow rate indicates the air volume, and the right ordinate axis Pressure indicates the air Pressure. Specifically, fig. 15 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 wall-mounted 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 51 is set to 42 mm, so that distances of about 9 mm are respectively reserved 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, and on the premise of ensuring the stability of the laminar flow fan 100, the length of the chord 51 is set to the maximum range, so that the air volume and the air pressure of the laminar flow fan 100 can meet the use requirements of users.
FIG. 16 is a schematic view showing the relationship between the installation angle α of the connecting piece 40 in FIG. 14 and the air volume and the air Pressure, since the connecting piece 40 of the laminar fan 100 in FIG. 14 can be a bi-arc blade 401, the installation angle α of the connecting piece 40 actually means the 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. in FIG. 16, the abscissa axis Metal angle (α) means the installation angle of the bi-arc blade 401 of the laminar fan 100, that is, the 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 refers to the flow rate and the right ordinate axis to the air Pressure. specifically, FIG. 16 shows that the relationship between the outer diameter, inner diameter, the chord length, the layer number, thickness, chord length 401 of the bi-arc blade 401, and the rotational speed of the motor 20, and the linear arc angle 401 and the linear distance between the two ends of the inner arc 41 of the inner arc blade 401.
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-arc blade 401 is 35 mm, the rotation speed of the laminar flow motor 20 is 1000rpm (revolutions per minute), the mounting angle α of the double-arc blade 401 may be set to-5 ° to 55 ° in consideration of the total air volume and the wind pressure, it is noted that the mounting angle α is positive when the chord line 51 between the two ends of the inner arc 41 passes through the middle point of the chord line 51 in the direction of rotation of the ring-shaped disk 10, and the mounting angle α is positive when the chord line 51 between the two ends of the ring-shaped disk 10 passes through the middle point 51 of the chord line 51 in the direction of rotation of the ring-shaped disk 10.
FIG. 17 is a schematic cross-sectional view of a laminar flow fan 100 having an aero blade 402, FIG. 18 is a schematic cross-sectional view of a mounting angle α of the aero blade 402 of the laminar flow fan 100 of FIG. 17 with respect to air volume and air pressure, in a specific embodiment, the connecting piece 40 may also be an aero blade 402. the cross-sectional view of the aero blade 402 has a double arc protruding in a direction of rotation of the ring disk 10, and the double arc includes an inner arc 41 and a back arc 42 sequentially arranged in a direction of rotation of the ring disk 10, the inner arc 41 and the back arc 42 having different centers and intersecting both ends. FIG. 17 shows a schematic cross-sectional view of the laminar flow fan 100 when the motor 20 drives the ring disk 10 to rotate clockwise, and the back arc 42 and the inner arc 41 protrude in a direction consistent with the direction of rotation of the ring disk 10. in other embodiments, the laminar flow motor 20 may also drive the ring disk 10 to rotate while the protruding direction of the back arc 42 and the inner arc 41 may be opposite to that shown in FIG.
The installation angle α of the aircraft blade 402 in fig. 18 actually refers to the angle formed by the chord line 51 between the two ends 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 abscissa axis Metal angle (α) in fig. 18 refers to the installation angle of the aircraft blade 402 of the laminar fan 100, that is, the angle formed by the chord line 51 between the two ends 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 flow rate, and the right ordinate axis Pressure refers to Pressure, specifically, fig. 18 shows that the installation angle α is related to the air Pressure and the air flow rate when the outer diameter, the inner diameter, the air Pressure, the pitch, the thickness, the chord length of the aircraft blade 402, and the rotational speed of the laminar flow motor 20 are all kept constant, and the installation angle 402 of the inner chord length of the aircraft blade 41 or the chord line 51 of the straight line of the aircraft blade of this embodiment can be.
While 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 flow motor 20 is 1000rpm, at which time the mounting 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. 19 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. 20 is a schematic view of the connection between the laminar flow fan 100 and the laminar flow motor 20 in another view of fig. 19,
fig. 21 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. 19.
As shown in fig. 19 and 20, 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. 21, 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. 21 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. 21, when the above-mentioned parameters are all kept constant, the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 gradually changes from one side far away from the driving disk 30 to the other side, which has a large influence on the air volume and a small influence on the air pressure. 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. 21, 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. 22 is a partial sectional view of the laminar flow fan 100 with gradually changing inner diameters of a plurality of annular disks 10, and fig. 23 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. 22. 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. 23, 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 Massflow rate refers to the air volume, and the right ordinate axis Pressure rise refers to the air Pressure. Specifically, fig. 23 is a schematic diagram illustrating 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 when the outer diameter, the distance, 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. 23, 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, which has a large influence on the air volume and a small influence on the air pressure. 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. 23, 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. 24 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. 25 is a schematic diagram of a relationship between the central angle and air volume and air pressure in fig. 24. Each of the ring disks 10 of the laminar flow fan 100 of fig. 24 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. 25, 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. 25 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. 25, 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. 25, when the central angle θ is set to 15 °, the air volume of the laminar flow fan 100 reaches the maximum value.
The wall-mounted air conditioner indoor unit 300 of the present embodiment includes: a housing 310, the interior of which defines a cavity, wherein the housing 310 includes a front panel 311 and a rear shell 312, the rear shell 312 is provided with an air inlet 330, and the front panel defines an air outlet 320; the evaporator 385 is disposed inside the cavity corresponding to the air inlet 330 and configured to exchange heat with air entering the cavity through the air inlet 330, wherein the evaporator 385 has a peripheral wall 386 and a bottom wall 387, the bottom wall 387 is parallel to the front panel 311, and the peripheral wall 386 is located at a side close to the front panel 311; and a laminar flow fan 110 disposed inside the cavity and in front of the evaporator 385, and configured to form laminar flow wind from the air heat-exchanged by the evaporator 385 by using a viscous effect, and to blow the laminar flow wind out of the outlet 320. The wall-mounted air conditioner indoor unit 300 is provided with the laminar flow fan 110, laminar flow air supply is realized through a viscosity 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 wall-mounted air conditioner indoor unit 300 of the present embodiment, the laminar flow fan 110 may include a laminar flow fan 100 and a laminar flow motor 20, and the laminar flow motor 20 is fixed between the fixing bracket 350 and the fixing plate 340. In addition, the laminar flow motor 20 is fixed with the drive 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. The housing 310 further includes a top panel 313 and a bottom panel 314, and the rear shell 312 may include a rear panel 315 and two side panels 316. The air inlet 330 is disposed on the top plate 313, the bottom plate 314, the rear panel 315 of the rear housing 312, and the two side panels 316, so as to realize five-sided air inlet and effectively increase the air inlet amount. The cover buckle type evaporator 385 is arranged corresponding to the air inlet 330, and air entering the cavity from the air inlet 330 can exchange heat through the evaporator 385. The heat exchange area is large, the air inlet is relatively uniform, the same refrigerating and heating capacity is realized, and the air supply volume can be reduced due to the large heat exchange area and the large heat exchange volume, so that the rotating speed of the laminar flow motor 20 can be reduced, the noise is reduced, and the laminar flow motor is suitable for low air volume, low noise and high-efficiency heat exchange air supply.
Further, in the wall-mounted air conditioner indoor unit 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. And a gap 710 is formed between the circumferential direction of the laminar flow fan 100 of the wall-mounted air conditioner indoor unit 300 and the inner wall of the front part of the volute 520 for accommodating the laminar flow fan 100, so that laminar flow air flows to the air outlet 320 through the gap 710, the air outlet of the wall-mounted air conditioner indoor unit 300 is uniform and soft, the pressure loss is low, the air volume is large, and the comfort requirement of a user is met.
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 actual usage of the wall-mounted air conditioner indoor unit 300, and these terms are only used for convenience of description and understanding of 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 (11)
1. A wall-mounted air conditioner indoor unit comprising:
the air conditioner comprises a shell, a fan and a controller, wherein a cavity is defined in the shell, the shell comprises a front panel and a rear shell, the rear shell is provided with an air inlet, and the front panel is defined with an air outlet;
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, the evaporator is provided with a peripheral wall and a bottom wall, the bottom wall is parallel to the front panel, and a front opening of the evaporator faces the front panel; and
and the laminar flow fan is arranged in the cavity and positioned on the front side of the evaporator, and is configured to utilize the viscosity effect to enable the air subjected to heat exchange by the evaporator to form laminar flow air and blow the laminar flow air out of the air outlet.
2. The wall mounted air conditioner indoor unit according to claim 1,
the housing further comprises a top plate and a bottom plate,
the rear case includes: a back panel and two side panels, an
The air inlet is formed in the top plate, the bottom plate, the rear panel and the two side panels to achieve five-surface air inlet.
3. The wall mounted air conditioner indoor unit according to claim 1,
the laminar flow fan comprises a laminar flow fan and a laminar flow motor, and
the laminar flow fan includes: the annular disks are arranged in parallel at intervals and have the same central axis, an air inlet channel is formed at the center of each annular disk, and air in the cavity enters gaps among the annular disks through the air inlet channel; and
and the laminar flow motor is configured to drive the plurality of annular discs to rotate, so that the boundary layer of air close to the surfaces of the plurality of annular discs moves in a rotating mode from inside to outside, and laminar flow wind is formed and blown out from the air outlet.
4. The wall mounted air conditioner indoor unit according to claim 3, further comprising:
a volute housing therein the laminar flow fan, and
the rear part of the volute is provided with an inlet arranged corresponding to the air inlet channel, so that air in the cavity enters the air inlet channel through the inlet;
and a gap is formed between the circumferential direction of the laminar flow fan and the inner wall of the front part of the volute, so that laminar flow wind flows to the air outlet through the gap.
5. The wall mounted air conditioner indoor unit according to claim 3, 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 behind the plurality of clamping grooves and are used for fixing the laminar flow motor between the fixing frame and the fixing plate.
6. The wall mounted air conditioner indoor unit according to claim 5, further comprising:
a shielding member covering the front side of the fixing plate
The front panel center has the vacancy, the blanking member with the front panel is injectd the air outlet jointly.
7. The wall mounted air conditioner indoor unit according to claim 3,
the laminar flow fan further includes: 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 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.
8. The wall mounted air conditioner indoor unit according to claim 7,
a groove is formed in the center of the driving disc towards the plurality of annular discs, and the laminar flow motor is fixedly arranged in the groove; or
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.
9. The wall mounted air conditioner indoor unit according to claim 7,
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.
10. The wall mounted air conditioner indoor unit according to claim 9,
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.
11. The wall mounted air conditioner indoor unit of claim 7, wherein the plurality of ring-shaped 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910045796.5A CN111442390B (en) | 2019-01-17 | 2019-01-17 | Wall-mounted air conditioner indoor unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910045796.5A CN111442390B (en) | 2019-01-17 | 2019-01-17 | Wall-mounted air conditioner indoor unit |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111442390A true CN111442390A (en) | 2020-07-24 |
CN111442390B CN111442390B (en) | 2021-08-24 |
Family
ID=71648641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910045796.5A Active CN111442390B (en) | 2019-01-17 | 2019-01-17 | Wall-mounted air conditioner indoor unit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111442390B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01302045A (en) * | 1988-05-30 | 1989-12-06 | Daikin Ind Ltd | Airconditioner |
CN104884812A (en) * | 2012-10-29 | 2015-09-02 | 埃克斯黑尔风扇有限公司 | Laminar flow radial ceiling fan |
CN105588190A (en) * | 2015-03-11 | 2016-05-18 | 海信(广东)空调有限公司 | Wall-mounted air conditioner indoor unit and air conditioner |
CN206545973U (en) * | 2017-01-22 | 2017-10-10 | 青岛海尔空调器有限总公司 | Indoor apparatus of air conditioner |
-
2019
- 2019-01-17 CN CN201910045796.5A patent/CN111442390B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01302045A (en) * | 1988-05-30 | 1989-12-06 | Daikin Ind Ltd | Airconditioner |
CN104884812A (en) * | 2012-10-29 | 2015-09-02 | 埃克斯黑尔风扇有限公司 | Laminar flow radial ceiling fan |
CN105588190A (en) * | 2015-03-11 | 2016-05-18 | 海信(广东)空调有限公司 | Wall-mounted air conditioner indoor unit and air conditioner |
CN206545973U (en) * | 2017-01-22 | 2017-10-10 | 青岛海尔空调器有限总公司 | Indoor apparatus of air conditioner |
Also Published As
Publication number | Publication date |
---|---|
CN111442390B (en) | 2021-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111442391B (en) | Wall-mounted air conditioner indoor unit | |
CN111442401B (en) | Indoor machine of floor air conditioner | |
CN111442394B (en) | Indoor machine of floor air conditioner | |
CN111442397B (en) | Indoor machine of floor air conditioner | |
CN111442390B (en) | Wall-mounted air conditioner indoor unit | |
CN111442351B (en) | Wall-mounted air conditioner indoor unit | |
CN209877121U (en) | Wall-mounted air conditioner indoor unit | |
CN111442389B (en) | Wall-mounted air conditioner indoor unit | |
CN209877150U (en) | Wall-mounted air conditioner indoor unit | |
CN111442386B (en) | Wall-mounted air conditioner indoor unit | |
CN111442358B (en) | Wall-mounted air conditioner indoor unit | |
CN111520820A (en) | Wall-mounted air conditioner indoor unit | |
CN111442388B (en) | Wall-mounted air conditioner indoor unit | |
CN111442400A (en) | Indoor machine of floor air conditioner | |
CN111442387B (en) | Wall-mounted air conditioner indoor unit | |
CN111442403B (en) | Indoor machine of floor air conditioner | |
CN111442402B (en) | Indoor machine of floor air conditioner | |
CN209840265U (en) | Wall-mounted air conditioner indoor unit | |
CN111442395B (en) | Indoor machine of floor air conditioner | |
CN111442350A (en) | Wall-mounted air conditioner indoor unit | |
CN111442407B (en) | Indoor machine of floor air conditioner | |
CN111442399B (en) | Indoor machine of floor air conditioner | |
CN111442404B (en) | Indoor machine of floor air conditioner | |
CN111442405B (en) | Indoor machine of floor air conditioner | |
CN111442392A (en) | Wall-mounted air conditioner indoor unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20210707 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
|
GR01 | Patent grant | ||
GR01 | Patent grant |