CN112524693B - Vertical air conditioner indoor unit - Google Patents
Vertical air conditioner indoor unit Download PDFInfo
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- CN112524693B CN112524693B CN202011359062.3A CN202011359062A CN112524693B CN 112524693 B CN112524693 B CN 112524693B CN 202011359062 A CN202011359062 A CN 202011359062A CN 112524693 B CN112524693 B CN 112524693B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
- F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention provides a vertical air conditioner indoor unit, comprising: a housing; the first air duct is arranged in the shell and provided with a first air inlet, a second air inlet and a first air outlet, the first air inlet is used for receiving airflow entering the shell from the first air inlet, the first air outlet faces the first air supply outlet, and the second air inlet is formed in the side wall, close to the first air outlet, of the first air duct; the flow guide piece and the second air channel are arranged in the shell and are provided with a third air inlet and a second air outlet, the third air inlet is used for receiving airflow entering the shell from the second air inlet, and the second air outlet is configured to be controllably communicated with the second air inlet so that the airflow in the second air channel flows to the front of the flow guide piece. The vertical air conditioner indoor unit has stronger wind power, longer air supply distance and no supercooling and overheating of outlet air.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a vertical air conditioner indoor unit.
Background
Compared with the wall-mounted air conditioner indoor unit, the vertical air conditioner indoor unit has larger number of pieces and stronger refrigerating and heating capacity, and is usually placed in indoor spaces with larger areas, such as a living room and the like. Because the coverage area of the vertical air conditioner indoor unit is larger, the vertical air conditioner indoor unit needs to have stronger long-distance air supply capacity and strong air outlet capacity. In order to realize remote air supply of the existing products, the rotating speed of a fan is generally increased so as to improve the wind speed and the wind quantity. However, the improvement of the rotating speed of the fan can cause a series of problems such as the increase of the power of the air conditioner, the increase of noise and the like, and the user experience is influenced.
Disclosure of Invention
The object of the present invention is to provide a vertical air conditioner indoor unit that overcomes or at least partially solves the above problems, so as to achieve better long-distance air supply and strong air supply effects.
The invention further aims to prevent the air outlet of the vertical air conditioner indoor unit from being excessively cooled and overheated, thereby improving the use experience of users.
In particular, the present invention provides a vertical air conditioner indoor unit comprising:
the front side of the shell is provided with a first air supply outlet, and the shell is also provided with a first air inlet and a second air inlet;
the first air duct is arranged in the shell and is provided with a first air inlet, a second air inlet and a first air outlet, the first air inlet is used for receiving airflow entering the shell from a first air inlet, the first air outlet faces the first air supply outlet, and the second air inlet is formed in the side wall, close to the first air outlet, of the first air duct;
the flow guide piece is arranged in the first air channel, and an annular air outlet gap is defined by the flow guide piece and the inner wall of the first air channel, which is close to the first air outlet, so that the airflow is guided to the annular air outlet gap, is gradually converged towards the airflow center direction under the guidance of the flow guide piece and the inner wall of the first air channel, and flows out of the first air outlet and the first air supply outlet in sequence; and
and the second air duct is arranged in the shell and is provided with a third air inlet and a second air outlet, the third air inlet is used for receiving airflow entering the shell from the second air inlet, and the second air outlet is configured to be controllably communicated with the second air inlet so that the airflow in the second air duct flows into the first air duct.
Optionally, an inner wall of the first air duct adjacent to the first air outlet is tapered, and the flow cross section of the inner wall is gradually reduced along the airflow direction.
Optionally, the second air duct comprises a first volute and an air ring; wherein
The inlet of the first volute forms a third air inlet which is arranged towards the second air inlet;
the wind ring is sleeved on the side wall of the first air channel close to the first air outlet and comprises an outer ring plate and an inner ring plate, the inner ring plate is arranged on the inner side of the outer ring plate and limits an annular opening between the inner ring plate and the outer ring plate, the outlet of the first volute is arranged towards the annular opening, and the inner ring plate is provided with a second air outlet.
Optionally, the wind ring is configured to: controlled to rotate on the vertical plane so that the second air outlet is controllably communicated with the second air inlet.
Optionally, the indoor unit of an upright air conditioner further includes: the driving mechanism comprises a gear ring, a gear and a motor, the gear ring is fixed with the wind ring, the gear is meshed with the gear ring, and the motor is used for driving the gear to rotate so as to drive the gear ring to rotate, so that the wind ring can rotate on a vertical surface.
Optionally, the number of the second air inlets is four, and the second air inlets are symmetrically arranged at intervals along the circumferential direction on the upper side, the lower side, the left side and the right side of the side wall of the first air duct, which is close to the first air outlet;
the number of the second air outlets is four, and the second air outlets are uniformly arranged on the inner ring plate at intervals along the circumferential direction.
Optionally, the first volute is disposed above the first air duct;
the second air inlet is higher than the first air inlet;
the first air inlet is positioned lower than the first air outlet.
Optionally, the indoor unit of an upright air conditioner further includes: and the heat exchanger is arranged in the first air duct and used for exchanging heat of the air flow entering the first air duct through the first air inlet.
Optionally, the diversion part is formed by a diversion line rotating around a horizontal central axis for a circle, the diversion line comprises a first arc-shaped section, a second arc-shaped section, a third arc-shaped section, a fourth arc-shaped section and a fifth arc-shaped section which are smoothly connected in sequence and are convex outwards, the first arc-shaped section, the second arc-shaped section and the third arc-shaped section are gradually far away from the horizontal central axis from the back to the front, and the terminal point of the fifth arc-shaped section and the starting point of the first arc-shaped section are on the horizontal central axis.
Optionally, the ratio of the radii of the first arcuate segment to the third arcuate segment is between 0.4 and 0.6;
the ratio of the radii of the second arc-shaped section to the third arc-shaped section is between 2.2 and 2.7;
the ratio of the radius of the fourth arc-shaped section to the radius of the third arc-shaped section is between 0.2 and 0.4;
the ratio of the radii of the fifth arc segment and the third arc segment is between 1.8 and 3.0.
In the vertical air conditioner indoor unit, the flow guide piece is arranged in the first air duct, and the flow guide piece and the inner wall of the first air duct, which is close to the first air outlet, define an annular air outlet gap. In the process that the air flow (heat exchange air flow, fresh air flow and the like) entering the first air channel from the first air inlet of the first air channel flows to the first air outlet, the air flow is guided by the flow guide piece to blow towards the inner wall of the first air channel and finally flows into the annular air outlet gap. Because the air outlet cross section of the annular air outlet gap is smaller, the air outlet speed is higher. The diversion piece not only limits an annular air outlet gap with the inner wall of the first air channel to achieve the effect of improving the air speed, but also can guide the air flow to the annular air outlet gap or force the air flow to flow towards the annular air outlet gap. The high-speed airflow is gradually converged towards the center of the airflow in the outward flowing process under the guidance of the flow guide piece and the inner wall of the first air duct to form a convergence effect, so that the wind power is stronger, the air supply distance is longer, and the requirements of the indoor unit of the vertical air conditioner on long-distance air supply and strong air supply are met.
Meanwhile, in the vertical air conditioner indoor unit, the second air inlet is formed in the side wall, close to the first air outlet, of the first air duct, the second air duct with the third air inlet and the second air outlet for receiving the air flow entering the casing from the second air inlet is arranged in the casing, the second air outlet is controllably communicated with the second air inlet so that the air flow in the second air duct flows to the front of the flow guide piece, the indoor air can be guided to the first air outlet through the second air duct, the air flow at the first air outlet is made up of two parts, namely heat exchange air flow and indoor air flow, the temperature of the air flow flowing out of the first air supply outlet cannot be overcooled or overheated, and the user experience is improved.
Furthermore, the shape of the flow guide piece is specially designed, so that the flow guide piece is formed by rotating a flow guide line which comprises a convex first arc-shaped section, a concave second arc-shaped section, a convex third arc-shaped section, a convex fourth arc-shaped section and a convex fifth arc-shaped section which are connected smoothly in sequence around a horizontal central axis, the flow resistance in the air flow flowing process is smaller, the energy loss and the noise are smaller, the convergence effect is more obvious, and the convergence air supply effect of the first air outlet is 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 to scale. In the drawings:
fig. 1 is a schematic structural view of a floor type air conditioning indoor unit according to an embodiment of the present invention.
Fig. 2 is a schematic sectional view of the indoor unit of the floor type air conditioner shown in fig. 1.
Fig. 3 is a partially enlarged schematic view of fig. 2.
Fig. 4 is a schematic sectional view of a guide of the indoor unit of the floor air conditioner shown in fig. 1.
Fig. 5 is an exploded view of the indoor unit of a floor type air conditioner shown in fig. 1.
Fig. 6 is a schematic structural view of a front case and an air ring of a first duct of the indoor unit of an upright air conditioner shown in fig. 1.
Detailed Description
The embodiment of the invention provides an indoor unit of a vertical air conditioner, which is an indoor part of a split air conditioner and is used for conditioning indoor air, such as refrigeration/heating, dehumidification, fresh air introduction and the like. For example, the indoor unit of a floor standing air conditioner may be an indoor unit of an air conditioner that performs cooling/heating by a vapor compression refrigeration cycle.
Fig. 1 is a schematic structural view of a floor type air conditioning indoor unit according to an embodiment of the present invention. Fig. 2 is a schematic sectional view of the indoor unit of the floor type air conditioner shown in fig. 1. Fig. 3 is a partially enlarged schematic view of fig. 2. Fig. 4 is a schematic sectional view of the air guide 30 of the vertical air conditioning indoor unit shown in fig. 1. Fig. 5 is an exploded view of the indoor unit of a floor type air conditioner shown in fig. 1. Fig. 6 is a schematic structural view of the front case 201 and the air ring 40 of the first air duct 20 of the stand type air conditioning indoor unit shown in fig. 1.
As shown in fig. 1 to 6, a vertical air conditioning indoor unit according to an embodiment of the present invention may generally include a casing 10, a first duct 20, a second duct, and a baffle 30.
The front side of the casing 10 has a first blowing port 11. The first blowing port 11 is used to blow an air flow in the casing 10 into the room to condition the indoor air. The air flow can be cold air produced by the indoor unit of the vertical air conditioner in a refrigeration mode, hot air produced in a heating mode, or fresh air introduced in a fresh air mode, and the like. The housing 10 may further have a first air inlet 12 and a second air inlet 14 for introducing indoor air. The housing 10 may be defined by a front case 101 and a rear case 102.
The first air duct 20 is disposed in the housing 10 and has a first air inlet 22, a second air inlet 240, and a first air outlet 21. The first air inlet 22 is used for receiving the air flow entering the housing 10 from the first air inlet 12. The first air outlet 21 faces the first air blowing port 11. The second air inlet 240 is opened on a side wall of the first air duct 20 adjacent to the first air outlet 21.
The flow guiding element 30 is disposed in the first air duct 20 and defines an annular air outlet gap 15 with an inner wall of the first air duct 20 near the first air outlet 21, so as to guide the air flow to the annular air outlet gap 15, so that the air flow gradually converges toward the air flow center direction under the guidance of the flow guiding element 30 and the inner wall of the first air duct 20 and sequentially flows out of the first air outlet 21 and the first air supply opening 11.
The second air duct is disposed in the housing 10 and has a third air inlet and a second air outlet 44, the third air inlet is used for receiving the air flow entering the housing 10 from the second air inlet 14, and the second air outlet 44 is configured to be controllably communicated with the second air inlet 240 so as to make the air flow in the second air duct flow to the front of the diversion element 30.
In the indoor unit of the floor air conditioner according to the embodiment of the present invention, the air guide member 30 is disposed in the first air duct 20, and the air guide member 30 and the inner wall of the air duct adjacent to the first air outlet 21 define an annular air outlet gap 15. In the process that the airflow (heat exchange airflow, fresh air flow, etc.) entering the first air duct 20 from the first air inlet 22 of the first air duct 20 flows to the first air outlet 21, the airflow is guided by the flow guide member 30 to blow toward the inner wall of the first air duct 20, and finally flows into the annular air outlet gap 15. Because the air outlet cross section of the annular air outlet gap 15 is smaller, the air outlet speed is higher. The diversion member 30 not only defines the annular air outlet gap 15 with the inner wall of the first air duct 20, so as to achieve the effect of increasing the wind speed, but also has a shape that the diversion member 30 can just guide the airflow to the annular air outlet gap 15, or force the airflow to flow toward the annular air outlet gap 15. The high-speed air flow is gradually converged towards the center of the air flow in the outward flowing process under the guidance of the flow guide piece 30 and the inner wall of the first air duct 20 to form a convergence effect, so that the wind power is stronger, the air supply distance is longer, and the requirements of the indoor unit of the vertical air conditioner on long-distance air supply and strong air supply are met.
Meanwhile, in the indoor unit of the vertical air conditioner in the embodiment of the present invention, the second air inlet 240 is formed on the side wall of the first air duct 20 adjacent to the first air outlet 21, and the second air duct having the third air inlet and the second air outlet 44 for receiving the air flow entering the casing 10 from the second air inlet 14 is disposed in the casing 10, and the second air outlet 44 is controllably communicated with the second air inlet 240 so as to make the air flow in the second air duct flow to the front of the air guide member 30, when air homogenization is required, the second air outlet 44 is communicated with the second air inlet 240, and further the air flow in the room is led to the first air outlet 21 through the second air duct, so that when cooling or heating is performed, the air flow at the first air outlet 21 is substantially composed of the heat exchange air flow which reaches the first air outlet 21 through the annular air outlet gap 15 and the indoor air flow which reaches the first air outlet 21 through the second air inlet 240, and thus the temperature of the air flow flowing out from the first air supply outlet 11 is not too cold or too hot, cold air is cooled without being heated, and the user experience is improved; when air homogenization is not needed, the second air outlet 44 is not communicated with the second air inlet 240, so that quick cooling or heating is realized. The vertical air conditioner indoor unit further includes a heat exchanger 50 disposed in the first air duct 20, and configured to exchange heat for the air flow entering the first air duct 20 through the first air inlet 22.
In some embodiments, the inner wall of the first air duct 20 adjacent to the first air outlet 21 is tapered, and the flow cross section of the inner wall gradually decreases along the airflow direction. In other words, the flow cross section of the first air duct 20 becomes gradually smaller in the air flow direction adjacent to the first air outlet 21. The tapering of the inner wall of the first air duct 20 near the first air outlet 21 can further promote the guiding of the air flow flowing into the annular air outlet gap 15 by the guiding member 30 and the tapering portion 150, thereby promoting the polymerization effect.
As shown in fig. 1, the front side of the casing 10 may further include a second air blowing port 13 located below the first air blowing port 11. The first air duct 20 may further have a third air outlet 23 located below the first air outlet 21 and disposed toward the second air supply outlet 13. The first air supply outlet 11 is a convergent air supply outlet, and the second air supply outlet 13 is a common air supply outlet. A movable cover plate can be arranged at the second air supply outlet 13 and used for opening and closing the second air supply outlet 13. Therefore, the vertical air conditioner indoor unit can have multiple air outlet modes, the vertical air conditioner indoor unit can only supply air through the first air supply outlet 11, also can only supply air through the second air supply outlet 13, and also can supply air through the first air supply outlet 11 and the second air supply outlet 13, a user can adjust the indoor unit as required, and the use experience of the user is improved.
Referring to fig. 4, the diversion member 30 is formed by a diversion line rotating a circle around the horizontal central axis, the diversion line comprises a first arc section (ab section) which is convex and is smoothly connected in sequence, a second arc section (bc section) which is concave, a third arc section (cd section) which is convex, a fourth arc section (de section) which is convex and a fifth arc section (ef section) which is convex, the first arc section (ab section), the second arc section (bc section) and the third arc section (cd section) are gradually far away from the horizontal central axis from the back to the front, and the terminal point of the fifth arc section (ef section) and the starting point of the first arc section (ab section) are on the horizontal central axis. In the embodiment shown in fig. 1, the first air blowing opening 11 is circular, the first air outlet 21 is circular, the longitudinal section of the inner wall of the first air duct 20 adjacent to the first air outlet 21 is also circular, and the annular air outlet gap 15 is also an annular air outlet gap 15.
With continued reference to fig. 2 and 3, in the embodiment of the present invention, when the airflow flows to the flow guiding element 30, the airflow first flows through the first arc-shaped section (section ab), and the airflow is easily guided by the flow guiding element 30 because the first arc-shaped section (section ab) is of a convex design. Then, the air flows through the second arc-shaped section (bc section), and the second arc-shaped section (bc section) is designed to be concave, so that the air flow speed is accelerated to quickly impact the inner wall of the first air duct 20 away from the central axis of the first air outlet 21. The third arc-shaped section (cd section) is designed to be convex so as to be closer to the trend of the gradually-reduced inner wall of the first air duct 20, so that the resistance of the third arc-shaped section (cd section) is smaller when the airflow is guided by the gradually-reduced inner wall of the first air duct 20 and turns to turn towards the central axis of the first air outlet 21. The convex design of the fifth arc-shaped section (ef section) is used as the outer end surface of the flow guide member 30, and the fifth arc-shaped section (ef section) is designed into a convex shape, so that the flow guide member 30 has a certain effect of converging the airflow forwards. The fourth arc-shaped segment (de segment) is used as a transition section of the third arc-shaped segment (cd segment) and the fifth arc-shaped segment (ef segment) and is in a convex shape, so that the airflow smoothly transits from the third arc-shaped segment (cd segment) to the fifth arc-shaped segment (ef segment). In the embodiment of the invention, the shape of the flow guide member 30 is specially designed, so that the whole flow guide member 30 is a symmetrical cone-like shape and is formed by rotating a flow guide line which comprises a convex first arc-shaped section (ab section), a concave second arc-shaped section (bc section), a convex third arc-shaped section (cd section), a convex fourth arc-shaped section (de section) and a convex fifth arc-shaped section (ef section) which are smoothly connected in sequence around a horizontal central axis for a circle, so that the flow resistance in the air flow flowing process is smaller, the energy loss and the noise are smaller, the convergence effect is more obvious, and the polymerization air supply effect of the first air outlet 21 is improved.
Further, the embodiment of the invention optimizes the size relationship of the arc-shaped sections to enhance the above effects. In some embodiments, the radius of the first arc segment (ab segment) is smaller than the radius of the third arc segment (cd segment), and preferably, the ratio of the radii of the first arc segment (ab segment) and the third arc segment (cd segment) is between 0.4 and 0.6, for example, the ratio of the radii is 0.4, 0.5, 0.6. The radius of the second curved section (bc section) is larger than the radius of the third curved section (cd section), preferably the ratio of the radii of the second curved section (bc section) and the third curved section (cd section) can be between 2.2 and 2.7, for example the ratio of radii is 2.2, 2.5, 2.7. The radius of the fourth arc-shaped segment (de segment) is smaller than or equal to the radius of the first arc-shaped segment (ab segment), and the ratio of the radius of the fourth arc-shaped segment (de segment) to the radius of the third arc-shaped segment (cd segment) can be preferably between 0.2 and 0.4, for example, the ratio of the radii is 0.2, 0.3 and 0.4. The radius of the fifth arcuate section (ef section) is larger than the radius of the third arcuate section (cd section), preferably the ratio of the radii of the fifth arcuate section (ef section) and the third arcuate section (cd section) may be between 1.8 and 3.0, for example the ratio of radii is 1.8, 2.5, 3.0.
In some embodiments, the second air duct includes a first volute 70 and an air ring 40. The inlet 701 of the first volute 70 forms a third air inlet disposed toward the second air inlet 14. The air ring 40 is sleeved outside a side wall of the first air duct 20 adjacent to the first air outlet 21, and includes an outer ring plate 41 and an inner ring plate 42, the inner ring plate 42 is disposed inside the outer ring plate 41 and defines an annular opening 43 with the outer ring plate 41, the outlet 702 of the first volute 70 faces the annular opening 43, and the inner ring plate 42 is provided with a second air outlet 44. The second air duct is arranged to include the first volute 70 and the air ring 40, indoor air is introduced into the second air duct by the first volute 70, the air ring 40 is sleeved outside the side wall of the first air duct 20 close to the first air outlet 21, and the inner annular plate 42 of the air ring 40 is provided with the second air outlet 44, so that the second air duct and the first air duct 20 are matched with each other in a very ingenious structure to realize the butt joint of the second air outlet 44 and the second air inlet 240.
In some embodiments, wind ring 40 is configured to: controlled to rotate in a vertical plane so that the second air outlet 44 is controllably communicated with the second air inlet 240. The communication/non-communication between the second air outlet 44 and the second air inlet 240 can be realized by arranging a switch baffle plate and the like at the second air outlet 44, the invention proposes that the controllable communication between the second air outlet 44 and the second air inlet 240 is realized by rotating the air ring 40 on a vertical surface, and the structure is ingenious and easy to configure. As shown in fig. 5 and 6, the indoor unit of a floor air conditioner according to the embodiment of the present invention further includes: the driving mechanism comprises a gear ring 91, a gear 92 and a motor 93, the gear ring 91 is fixed with the wind ring 40, the gear 92 is meshed with the gear ring 91, and the motor 93 is used for driving the gear 92 to rotate so as to drive the gear ring 91 to rotate, so that the wind ring 40 rotates on a vertical surface. To facilitate the arrangement of the gear 92 and the motor 93, the ring gear 91 is usually arranged around the inner side surface of the outer ring plate 41. The motor 93 may be fixed above the first air duct 20.
The number of the second air inlets 240 and the second air outlets 44 may be the same or different. In some embodiments, the number of the second air inlets 240 is four, and the second air inlets are symmetrically spaced along the circumferential direction on the upper, lower, left and right sides of the side wall of the first air duct 20 adjacent to the first air outlet 21. The number of the second air outlets 44 is also four, and the second air outlets are circumferentially and evenly spaced on the inner ring plate 42. The second air inlets 240 are symmetrically arranged on the upper side, the lower side, the left side and the right side of the side wall of the first air duct 20 close to the first air outlet 21 at intervals along the circumferential direction, so that air can be discharged from the second air outlet 44 in the upper direction, the lower direction, the left direction and the right direction, and air distribution can be realized by heat exchange air flow in four directions. In other embodiments, as shown in fig. 6, the number of the second air outlets 44 is one, and in this case, the second air outlets 44 are communicated with the second air inlets 240 on the upper side, the lower side, the left side or the right side by rotating the air ring 40, so that the uniform air distribution of the heat exchange air flow in different directions can be realized. The second air inlet 240 and the second air outlet 44 may be rectangular openings. It can be understood that when the wind ring 40 is controlled to rotate, the second air outlet 44 and the second air inlet 240 may be completely overlapped or partially overlapped, and when the second air outlet 44 and the second air inlet 240 are completely overlapped, the wind power is strongest and the wind volume is largest.
In some embodiments, the first volute 70 is disposed above the first air duct 20; the second air inlet 14 is higher than the first air inlet 12; the first air inlet 22 is positioned lower than the first air outlet 21. As shown in fig. 2, the first volute 70 is located above the first air duct 20, the second air inlet 14 is opened at the left and right sides of the upper portion of the housing 10, corresponding to the two inlets 701 of the first volute 70, and the outlet 702 of the first volute 70 faces forward; the first air inlet 12 is opened at the lower rear side of the housing 10. By disposing the first volute 70 above the first air duct 20 and positioning the first air inlet 22 lower than the first air outlet 21, the layout of the second air duct and the first air duct 20 in the housing 10 can be made compact and reasonable.
As shown in fig. 5, the first duct 20 may include a front case 201, a rear case 202, and a water tray 203. The rear and lower sides of the front case 201 are opened. The front and lower sides of the rear case 202 are opened and the rear case 202 is fastened to the rear side of the front case 201. The upper part of the front shell 201 extends forward to form a tapered ring part 24, and the ring part 24 is provided with a first air outlet 21. The wind ring 40 is sleeved outside the ring portion 24. In order to prevent the airflow of the second air duct from flowing backward out of the gap between the air ring 40 and the annular ring portion 24 after entering the annular opening 43, a wind shielding portion 25 is further provided around the annular ring portion 24 except for the outlet 702 of the first scroll 70. The drain pan 203 is covered and fastened to the lower sides of the front and rear cases 201 and 202 to close the open lower sides thereof. The first air inlet 22 of the first air duct 20 opens on the water collector 203. The first air duct 20 is divided into three parts, namely a front shell 201, a rear shell 202 and a water pan 203, so that the parts can be processed and manufactured independently, and performance requirements can be met better.
Referring to fig. 2 and 5, the heat exchanger 50 may be disposed inside the first air duct 20 and mounted on the water tray 203. The heat exchanger 50 may have a two-stage structure, in which two heat exchange sections are flat and connected at top ends thereof, and bottom ends of the two heat exchange sections are disposed on the water pan 203 and located at two sides of the first air inlet 22 of the first air duct 20, respectively. The inverted "v" shape of the heat exchanger 50 provides a sufficient heat exchange area, and provides a more sufficient contact with the upward-flowing airflow from the first air inlet 22 of the first air duct 20, resulting in a higher heat exchange efficiency. The water pan 203 is used for carrying the heat exchanger 50 on one hand and is used for receiving condensed water dropping from the surface of the heat exchanger 50 during air conditioning refrigeration on the other hand. The indoor unit of a floor type air conditioner according to the embodiment of the present invention may further include a first fan 60 and a second fan 71. The first fan 60 is disposed in the casing 10, and is configured to cause indoor air to enter the first air duct 20 to exchange heat with the heat exchanger 50, and then to be blown out from the first air supply outlet 11 and/or the second air supply outlet 13 through the first air duct 20. The second fan 71 is disposed in the second air duct for promoting the indoor air to flow into the second air duct through the second air inlet 14. As shown in fig. 5, the first fan 60 is a double-suction centrifugal fan, and includes a second volute 61, and a motor 62 and a centrifugal fan 63 disposed in the second volute 61; the second fan 71 is disposed in the first scroll 70, and includes a motor 72 and a fan 73.
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 (6)
1. An indoor unit of a floor type air conditioner, comprising:
the front side of the shell is provided with a first air supply outlet, and the shell is also provided with a first air inlet and a second air inlet;
the first air duct is arranged in the shell and provided with a first air inlet, a second air inlet and a first air outlet, the first air inlet is used for receiving airflow entering the shell from the first air inlet, the first air outlet faces the first air supply outlet, and the second air inlet is formed in the side wall, close to the first air outlet, of the first air duct;
the flow guide piece is arranged in the first air duct, defines an annular air outlet gap with the inner wall of the first air duct close to the first air outlet and is used for guiding airflow to the annular air outlet gap so that the airflow is gradually converged towards the airflow center direction under the guidance of the flow guide piece and the inner wall of the first air duct and sequentially flows out of the first air outlet and the first air supply outlet; and
the second air duct is arranged in the shell and is provided with a third air inlet and a second air outlet, the third air inlet is used for receiving the air flow entering the shell from the second air inlet, and the second air outlet is configured to be controllably communicated with the second air inlet so that the air flow in the second air duct flows to the front of the flow guide piece;
the second air duct comprises a first volute and an air ring; the inlet of the first volute forms the third air inlet and is arranged towards the second air inlet, and the first volute is arranged above the first air duct; the middle part of the air ring is hollow, the inner wall of the air ring is gradually reduced along the airflow direction, the air ring is sleeved outside the side wall of the first air duct close to the first air outlet and comprises an outer ring plate and an inner ring plate, the inner ring plate is arranged on the inner side of the outer ring plate and defines an annular opening with the outer ring plate, the outlet of the first volute is arranged towards the annular opening, and the inner ring plate is provided with the second air outlet;
the wind ring is configured to: controlled rotation in a vertical plane to controllably communicate the second air outlet with the second air inlet; the indoor unit further includes: the driving mechanism comprises a gear ring, a gear and a motor, the gear ring is fixed with the wind ring, the gear is meshed with the gear ring, and the motor is used for driving the gear to rotate so as to drive the gear ring to rotate, so that the wind ring rotates on a vertical surface;
the number of the second air inlets is four, and the second air inlets are symmetrically arranged on the upper side, the lower side, the left side and the right side of the side wall of the first air channel close to the first air outlet at intervals along the circumferential direction; the number of the second air outlets is one, and the second air outlets are communicated with second air inlets on the upper side, the lower side, the left side or the right side by rotating the air ring, so that the uniform air distribution of heat exchange air flow in different directions is realized;
the first air duct also comprises a front shell, the upper part of the front shell extends forwards to form a tapered annular part, and the annular part is provided with the first air outlet; the wind ring is sleeved on the outer side of the ring portion, and a wind shielding portion is further arranged on the position of the periphery of the ring portion except for the outlet of the first volute.
2. The indoor unit of a floor type air conditioner according to claim 1, wherein the indoor unit of a floor type air conditioner includes
The inner wall of the first air duct close to the first air outlet is in a tapered shape with a gradually-reduced flow cross section along the airflow direction.
3. The indoor unit of a floor air conditioner according to claim 1,
the second air inlet is higher than the first air inlet;
the first air inlet is positioned lower than the first air outlet.
4. The indoor unit of a floor air conditioner according to claim 1, further comprising:
and the heat exchanger is arranged in the first air duct and used for exchanging heat of the airflow entering the first air duct through the first air inlet.
5. The indoor unit of a floor type air conditioner according to claim 1, wherein the indoor unit of a floor type air conditioner includes
The water conservancy diversion spare is formed around horizontal central axis rotation a week by the water conservancy diversion line, the water conservancy diversion line is including the first segmental arc of evagination, the second segmental arc of indent, the third segmental arc of evagination, the fourth segmental arc of evagination and the fifth segmental arc of evagination that smoothly meet in proper order, and first segmental arc the second segmental arc the third segmental arc is keeping away from the place ahead to horizontal central axis gradually after, the terminal point of fifth segmental arc with the starting point of first segmental arc is located together on the horizontal central axis.
6. The indoor unit of a floor type air conditioner according to claim 5, wherein the indoor unit of a floor type air conditioner includes
The ratio of the radii of the first arcuate segment and the third arcuate segment is between 0.4 and 0.6;
the ratio of the radii of the second arcuate segment to the third arcuate segment is between 2.2 and 2.7;
the ratio of the radii of the fourth arc segment and the third arc segment is between 0.2 and 0.4;
the ratio of the radii of the fifth arcuate segment to the third arcuate segment is between 1.8 and 3.0.
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