CN111237873A - Vortex ring generating device, air conditioner indoor unit and air conditioner - Google Patents
Vortex ring generating device, air conditioner indoor unit and air conditioner Download PDFInfo
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- CN111237873A CN111237873A CN202010199522.4A CN202010199522A CN111237873A CN 111237873 A CN111237873 A CN 111237873A CN 202010199522 A CN202010199522 A CN 202010199522A CN 111237873 A CN111237873 A CN 111237873A
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Classifications
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
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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
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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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
- F24F13/20—Casings or covers
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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)
- Duct Arrangements (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a vortex ring generating device, an air conditioner indoor unit and an air conditioner, wherein the vortex ring generating device comprises a shell, a flow expansion piece, a wind shielding body and a vortex ring generating part arranged on the shell, the shell comprises a wind cylinder with a wind outlet at one end and a flow collecting piece arranged on the wind outlet, and a wind supply opening with a wind passing area smaller than that of the wind outlet is formed on the flow collecting piece; the flow expansion piece is arranged on the shell, surrounds the air supply outlet and is communicated with the air supply outlet, the flow expansion piece is provided with a flow expansion section which is positioned on one side of the flow collection piece away from the air cylinder, and the flow expansion section is arranged in a gradually expanding manner in the air supply direction of the air supply outlet; the wind shielding body is correspondingly arranged in the flow expanding piece and/or the flow collecting piece and is provided with a flow guide part which is gradually reduced from the flow expanding section to one side of the flow collecting piece; the vortex ring generating portion periodically drives the airflow to be blown out through the diffuser, or the vortex ring generating portion periodically supplies the airflow therethrough to be blown out through the diffuser. The vortex ring generating device has the advantages that the air supply distance of the vortex ring is farther, and the air supply radiation range is wider.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a vortex ring generating device, an air conditioner indoor unit and an air conditioner.
Background
The existing air treatment equipment, such as an air conditioner, a humidifier, an air purifier and the like, needs to blow out a treated air outlet, and the air flow coming out of a conventional air outlet is fixed and unchanged, so that the radiation range is short and narrow, large-range and remote air supply cannot be realized, and the use experience of a user is reduced.
The long-distance air supply can be realized by arranging the vortex ring generating device. The air supply outlet structure of the prior vortex ring generating device mostly adopts a tapered nozzle form or a cylinder and baffle type sudden-change tapered structure. The diameter of the air supply opening is closely related to the diameter and the formation of the vortex ring, and when the diameter of the air supply opening is too large, the jet flow speed of the air supply opening is too small to form the vortex ring, so that long-distance air supply cannot be realized. When the diameter of the air supply opening is too small, the diameter of the vortex ring is too small or a series of vortex groups are directly formed without forming the vortex ring, so that long-distance air supply cannot be realized.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide a vortex ring generating device, and aims to solve the technical problems of small diameter and unstable formation of a vortex ring.
In order to achieve the purpose, the vortex ring generating device provided by the invention comprises a shell, a flow expanding piece, a wind shielding body and a vortex ring generating part;
the shell comprises an air duct and a flow collecting piece, an air outlet is formed in one end of the air duct, the flow collecting piece is installed at the air outlet, an air supply outlet is formed in the flow collecting piece, and the air passing area of the air supply outlet is smaller than that of the air outlet;
the flow expansion piece is arranged on the shell, is arranged around the air supply opening and is communicated with the air supply opening, and is provided with a flow expansion section which is positioned on one side of the flow collection piece away from the air duct and is arranged in a gradually expanding manner in the air supply direction of the air supply opening;
the wind shielding body is correspondingly arranged in the flow expanding piece and/or the flow collecting piece and is provided with a flow guide part which is gradually reduced from the flow expanding section to one side of the flow collecting piece;
the vortex ring generating part is mounted on the housing, and periodically drives the airflow to be blown out through the diffuser, or periodically passes through the airflow to be blown out through the diffuser.
In one embodiment, the included angle between the flow expansion section and the axial direction of the flow collecting piece is greater than 0 degree and less than or equal to 25 degrees.
In one embodiment, the flow expansion piece further comprises a smooth section, one end of the smooth section is connected with the periphery of the air supply outlet of the flow collecting piece, and the other end of the smooth section is connected with the flow expansion section.
In one embodiment, the smooth segment extends in the axial direction of the manifold.
In one embodiment, the ratio of the extension length of the smooth section to the equivalent diameter of the air supply opening is greater than or equal to 0.15 and less than or equal to 0.4.
In one embodiment, the flow guide part is arranged in a conical shape, and the conical angle of the flow guide part is greater than or equal to 50 degrees and less than or equal to 130 degrees.
In an embodiment, the wind shielding body further includes a flow guiding portion connected to the flow guiding portion, the flow guiding portion is correspondingly disposed in the flow collecting member, the flow guiding portion is correspondingly disposed in the flow expanding member, and an annular channel is formed between an outer wall surface of the flow guiding portion and an inner wall surface of the flow expanding member.
In an embodiment, the drainage portion includes a first drainage section and a second drainage section that are connected, the first drainage section is disposed corresponding to the smooth section, the second drainage section is disposed corresponding to the flow expansion section, an extending direction of the first drainage section is consistent with an extending direction of the smooth section, and an extending direction of the second drainage section is consistent with an extending direction of the flow expansion section.
In one embodiment, the ratio of the diameter of the joint of the flow guide part and the flow guide part to the equivalent diameter of the air supply opening is greater than or equal to 0.2 and less than or equal to 0.6.
In an embodiment, the vortex ring generating device further comprises a mounting bracket, and the wind shielding body is connected to the flow expanding piece and/or the flow collecting piece through the mounting bracket.
In an embodiment, the mounting bracket includes a plurality of supporting arms arranged in a spoke shape, the supporting arms penetrate through the wall surface of the wind shielding body, inner ends of the supporting arms are connected, and outer ends of the supporting arms are fixedly connected to the flow expanding member.
In one embodiment, a ratio of an equivalent diameter of the air supply opening to an equivalent diameter of the air outlet is greater than or equal to 0.5 and less than or equal to 0.75.
In an embodiment, the vortex ring generating device further includes a driving device, the vortex ring generating portion includes an airflow pushing assembly movably installed in the housing to periodically push the airflow to be blown out by the diffuser, and the driving device is connected to the airflow pushing assembly to periodically drive the airflow pushing assembly to reciprocate in the housing.
In an embodiment, the vortex ring generating device further includes a driving device, the vortex ring generating portion includes an opening and closing door, the opening and closing door is mounted on the air duct to block the airflow in the air duct from flowing to the flow collecting member, and the driving device is connected to the opening and closing door to periodically drive the opening and closing door to open or close.
The invention also provides an air-conditioning indoor unit, which comprises a shell and a vortex ring generating device, wherein the vortex ring generating device comprises a shell, a flow expanding piece, a wind shielding body and a vortex ring generating part;
the shell comprises an air duct and a flow collecting piece, an air outlet is formed in one end of the air duct, the flow collecting piece is installed at the air outlet, an air supply outlet is formed in the flow collecting piece, and the air passing area of the air supply outlet is smaller than that of the air outlet;
the flow expansion piece is arranged on the shell, is arranged around the air supply opening and is communicated with the air supply opening, and is provided with a flow expansion section which is positioned on one side of the flow collection piece away from the air duct and is arranged in a gradually expanding manner in the air supply direction of the air supply opening;
the wind shielding body is correspondingly arranged in the flow expanding piece and/or the flow collecting piece and is provided with a flow guide part which is gradually reduced from the flow expanding section to one side of the flow collecting piece;
a vortex ring generating part is arranged on the shell, and the vortex ring generating part periodically drives airflow to be blown out through the flow expanding piece, or periodically passes airflow to be blown out through the flow expanding piece;
the shell is provided with a main air inlet, a main air outlet and a heat exchange air channel communicated with the main air inlet and the main air outlet, and the air inlet of the vortex ring generating device is communicated with the heat exchange air channel.
The invention also provides an air conditioner, which comprises an air conditioner outdoor unit and an air conditioner indoor unit which are communicated through the refrigerant pipe, wherein the air conditioner indoor unit comprises a shell and a vortex ring generating device, and the vortex ring generating device comprises a shell, a flow expanding piece, a wind shielding body and a vortex ring generating part;
the shell comprises an air duct and a flow collecting piece, an air outlet is formed in one end of the air duct, the flow collecting piece is installed at the air outlet, an air supply outlet is formed in the flow collecting piece, and the air passing area of the air supply outlet is smaller than that of the air outlet;
the flow expansion piece is arranged on the shell, is arranged around the air supply opening and is communicated with the air supply opening, and is provided with a flow expansion section which is positioned on one side of the flow collection piece away from the air duct and is arranged in a gradually expanding manner in the air supply direction of the air supply opening;
the wind shielding body is correspondingly arranged in the flow expanding piece and/or the flow collecting piece and is provided with a flow guide part which is gradually reduced from the flow expanding section to one side of the flow collecting piece;
a vortex ring generating part is arranged on the shell, and the vortex ring generating part periodically drives airflow to be blown out through the flow expanding piece, or periodically passes airflow to be blown out through the flow expanding piece;
the shell is provided with a main air inlet, a main air outlet and a heat exchange air channel communicated with the main air inlet and the main air outlet, and the air inlet of the vortex ring generating device is communicated with the heat exchange air channel.
The vortex ring generating device of the invention ensures that the air passing area of the air supply opening is smaller than that of the air outlet opening, and the vortex ring generating part periodically drives the airflow to be blown out through the flow expanding piece, or the vortex ring generating part periodically supplies the airflow to pass so as to blow out the airflow through the flow expanding piece. The vortex ring airflow can be periodically output from the flow expanding piece, and directional, fixed-point and remote air supply can be realized. In addition, the flow expanding part is provided with a flow expanding section which is positioned on one side of the flow collecting part far away from the air cylinder, the flow expanding section is arranged in a gradually expanding mode from the air supply opening to one side far away from the shell, the wind shielding body is arranged in the flow expanding part and/or the flow collecting part, and the wind shielding body is provided with a flow guide part which is arranged in a gradually reducing mode from the flow expanding part to one side of the flow collecting part. The stable vortex ring is blown out from the flow expanding piece, the airflow of the vortex ring is larger, the air outlet speed is faster, and the air supply distance of the vortex ring is longer and the air supply radiation range is larger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vortex ring generator according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along A-A of the vortex ring generator of FIG. 1;
FIG. 3 is a schematic view of a portion of the vortex ring generator of FIG. 2;
FIG. 4 is a schematic view of another embodiment of the vortex ring generator of the present invention in partial cross-section;
FIG. 5 is a schematic view, partly in section, of a vortex ring generator according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of a partially exploded view of the vortex ring generator of FIG. 1;
FIG. 7 is a view showing the vortex ring airflow simulation of the vortex ring generating apparatus of the present invention;
fig. 8 is a schematic structural view of an air conditioning indoor unit according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Vortex |
121 | |
140 | Vortex |
| 110 | |
122 | |
150 | |
| 111 | |
130 | |
151 | |
| 111a | |
131 | |
160 | |
| 112 | |
132 | |
200 | |
| 112a | |
132a | The |
210 | |
| 120 | |
132b | |
220 | Main air outlet |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.
The invention provides a vortex ring generating device which can be used independently or used for equipment such as an air conditioner, a humidifier, an air purifier and the like.
In the embodiment of the present invention, as shown in fig. 1 to 6, the vortex ring generating apparatus 100 includes a housing 110, a diffuser 120, a wind shielding body 130, and a vortex ring generating portion 140. The casing 110 includes an air duct 111 and a flow collecting member 112, one end of the air duct 111 is provided with an air outlet 111a, the flow collecting member 112 is mounted at the air outlet 111a, the flow collecting member 112 is provided with an air supply outlet 112a, and an air passing area of the air supply outlet 112a is smaller than that of the air outlet 111 a. The diffuser 120 is mounted on the casing 110, the diffuser 120 is disposed around the air supply opening 112a and is communicated with the air supply opening 112a, the diffuser 120 has a diffuser section 121 located on one side of the collector 112 away from the air duct 111, and the diffuser section 121 is disposed in a gradually expanding manner in the air supply direction of the air supply opening 112 a. The wind shielding body 130 is correspondingly installed in the flow expanding member 120 and/or the flow collecting member 112, and the wind shielding body 130 has a flow guiding portion 131 which is arranged from the flow expanding section 121 to one side of the flow collecting member 112 in a tapered manner. Vortex ring generating portion 140 is mounted to housing 110, and vortex ring generating portion 140 periodically drives the airflow to be blown out through diffuser 120, or vortex ring generating portion 140 periodically supplies the airflow therethrough to be blown out through diffuser 120.
In this embodiment, the inner cavity of the housing 110 forms a vortex ring air duct, and the shape of the housing 110 may be a straight cylinder shape or a bent cylinder shape, and the cross section thereof may be a rectangular shape, a circular shape, an oval shape, a polygonal shape, an irregular shape, and the like, which is not limited herein. The overall shape and the cross-sectional shape of the vortex ring air duct can be selected according to the use requirement, and are not particularly limited herein. The air duct 111 further has an air inlet, and the shape of the air inlet may be circular, rectangular, oval, polygonal, etc., or may be a plurality of micropores. When the vortex ring generating part 140 is of a piston-like structure, the airflow can enter the air duct 111 through the air outlet 112a, and at this time, a ventilation opening can be provided at one end of the air duct 111 far from the air outlet 112a for the piston-like structure to move. The shapes of the outlet 111a and the outlet 112a may be circular, rectangular, elliptical, polygonal, or the like. The air duct 111 is substantially cylindrical. In one embodiment, as shown in fig. 1 and 2, the flow collecting piece 112 is a flow collecting cover, and the flow collecting cover is tapered from the air outlet 111a to the air blowing outlet 112 a. The cross-sectional shape of the manifold can be circular, oval, rectangular, etc. In order to reduce wind resistance, the collecting cover is substantially cylindrical. By providing the collecting cover with a taper from the air outlet 111a to the air blowing port 112a, the collecting cover can collect the air blown out from the air outlet 111a, and the generation and blowing of the vortex ring can be made smoother.
In another embodiment, the collecting member 112 is a collecting plate, and the collecting plate is installed at the air outlet 111a and is provided with an air inlet 112 a. The collecting plate may be a single plate covering the outlet 111a, and the flow-guiding plate may be provided with the outlet 112a smaller than the outlet 111a, so that when the air flow is blown out from the outlet 111a to the outlet 112a, the air flow blown out from the outlet 112a can be made into a vortex shape due to a partial blocking effect of the collecting plate. And the collector plate has simple structure and is easy to manufacture and process. In other embodiments, the collecting member 112 may be formed by enclosing several plates, and the formation of the vortex ring may be also achieved by providing the air blowing port 112a on one of the plates. The current collector 112 may also be formed by a combination of a current collector plate and a current collector cup,
the collecting member 112 and the air duct 111 may be integrally formed or may be separately formed. It can be understood that when the collecting member 112 is formed separately from the air duct 111, the collecting member 112 is hermetically connected to the air duct 111. When the collecting cover is integrally formed with the air duct 111, a virtual boundary is defined by a boundary at a junction between the air duct 111 and the collecting member 112, one side of the boundary is the air duct 111, the other side is the collecting member 112, and an air outlet 111a of the air duct 111 is formed at the boundary. Clearly, the air outlet 111a has an air passing area larger than that of the air supply outlet 112a of the collecting member 112. The extension directions of the outer wall surfaces of the collecting piece 112 and the air duct 111 can be the same, that is, the length extension lines of the outer wall surfaces of the collecting piece and the air duct are in a straight line, and at the moment, the vortex ring air supply part is in a complete shape without a patch cord. The extending directions of the collecting piece 112 and the outer wall surface of the air duct 111 may be different, that is, the length extending lines of the outer wall surfaces of the collecting piece 112 and the air duct 111 form an included angle, and at this time, a junction line is formed at the junction of the collecting piece 112 and the air duct 111.
Since the air flow passing through the air outlet 111a is smaller than the air flow passing through the air outlet 111a, part of the air flow flowing from the air outlet 111a to the air outlet 112a flows along the inner wall surface of the collecting member 112 and then flows out from the periphery of the air outlet 112a, and the other part of the air flow flows out from the middle of the air outlet 112 a. The partial flow flowing out from the edge of the air blowing opening 112a is defined as edge flow, and the flow flowing out from the center of the air blowing opening 112a is positioned as center flow. Then, the edge flow is subjected to resistance by the inner wall surface of the manifold 112. The flow velocity is lower compared to the middle stream. This difference in flow velocity causes a vortex ring airflow to be generated when the airflow exits the supply opening 112 a. Under the same air quantity, the mode of vortex ring air supply can realize directional, fixed-point and remote air supply. And the vortex ring exchanges heat with ambient air in the transmission process, the temperature difference between the temperature of the vortex ring and the ambient air is not large, so that the vortex ring cannot generate obvious supercooling or overheating feeling when being blown on a person, and the comfort is improved.
In an embodiment, a ratio of an equivalent diameter (e.g., D2 in fig. 3) of the air blowing opening 112a to an equivalent diameter (e.g., D3 in fig. 3) of the air outlet 111a is greater than or equal to 0.5 and less than or equal to 0.75. The equivalent diameter of the air outlet 111a is defined similarly to the equivalent diameter of the air supply outlet 112a, and is not described herein. The equivalent diameter of the air blowing opening 112a and the equivalent diameter of the air outlet 111a may be specifically 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, or the like. When the ratio of the equivalent diameter of the air supply opening 112a to the equivalent diameter of the air outlet 111a is smaller than 0.5, if the diameter of the air supply opening 112a is too small, the diameter of the formed vortex ring is small, and the air supply distance cannot meet the requirement. When the ratio of the equivalent diameter of the air supply opening 112a to the equivalent diameter of the air outlet 111a is greater than 0.75, the difference between the equivalent diameters of the air supply opening 112a and the air outlet 111a is small, the air flow of the air supply opening 112a is dissipated quickly, and further vortex ring air flow cannot be formed effectively. And by making the ratio of the equivalent diameter of the air supply opening 112a to the equivalent diameter of the air outlet 111a greater than or equal to 0.5 and less than or equal to 0.75, a stable vortex ring airflow can be formed, and the vortex ring has a large diameter and a long air supply distance.
It will be appreciated that diffuser 120 is a thin-walled hollow structure. The diffuser 120 is provided around the air blowing port 112a and communicates with the air blowing port 112a, so that the air flow blown out from the air blowing port 112a can be blown out through the diffuser 120. The diffuser 120 may be integrally formed with the housing 110 or may be separately formed, and the diffuser 120 may be mounted on the housing 110 by means of sheathing, bonding, screwing, or the like. The diffuser 120 may be mounted on an inner wall surface or an outer wall surface of the casing 110. The diffuser 120 may be specifically installed on the collector 112, the wind barrel 111, or both the collector 112 and the wind barrel 111. It is only necessary that the flow expanding member 120 has the flow expanding section 121 located on the side of the flow collecting member 112 away from the air duct 111. Thus, the airflow is blown out from the air outlet 112a of the collector 112, and then flows into the diffuser section 121 of the diffuser 120 and is blown out. The flow expansion section 121 is arranged in the blowing direction of the blowing port 112a, that is, in a manner of gradually expanding from the side away from the casing 110, so that the flow expansion section 121 is in a horn shape or a flared shape as a whole. The extension line of the inner wall surface of the flow expansion section 121 from the air supply opening 112a to the side far away from the casing 110 may be a straight line or a curved line, and the curved line may be an inward concave or outward convex curved line, so that the flow expansion section 121 is only required to be gradually expanded from the air supply opening 112a to the side far away from the casing 110. By providing the diffuser 120 with the diffuser 121, the vortex ring vortex is blown out from the air outlet 112a, and then the vortex ring airflow flows out along the diffuser 121, and the diffuser 121 can change the vector direction of the fluid velocity of the vortex ring airflow, so that after the vortex ring airflow guided by the diffuser 121 is blown out from the diffuser 120, a larger vortex ring can be formed, and the diameter of the vortex ring and the diameter of the vortex core are both larger than the vortex ring airflow without the diffuser 120. The vortex core refers to a structure in which, after the fluid ejected from the outlet of the vortex ring generating device 100 enters the external space, the fluid is curled up into an independent vortex under the shearing action of the free fluid, and the portion where the vortex volume is dense is called as a vortex core. The diameter of the vortex core is the diameter of the cross section circle of the vortex core in the axial direction. The diameter of the vortex ring is the central distance between two vortex cores which are symmetrical along the axis.
The wind shielding body 130 may have a solid structure or a thin-walled hollow structure. The entire wind shielding body 130 is of a structure that is impermeable to wind, and therefore can block the airflow. It is understood that the size of the wind shielding body 130 should be smaller than the size of the flow expanding member 120 and the flow collecting member 112, so that the wind shielding body 130 does not completely block the blowing of the air flow in the housing 110 when the wind shielding body 130 is mounted on the flow expanding member 120 and/or the flow collecting member 112. The wind shielding body 130 may be installed only in the manifold 112, specifically, at the air blowing port 112a of the manifold 112. The wind shielding body 130 may be installed in the air guide. The flow guide member may also be installed in the flow expansion member 120 and the flow collecting member 112, respectively, that is, the wind shielding body 130 extends from the flow collecting member 112 to the flow guide member. The flow guiding portion 131 of the wind shielding body 130 is disposed in a tapered manner from the flow expansion section 121 toward the flow collecting piece 112, so that the flow guiding portion 131 may be in a conical shape, a circular truncated cone shape, a cone-like shape, a circular truncated cone-like shape, or the like. The cone-like shape and the circular truncated cone-like shape mean that the outer contour line of the flow guide portion 131 in the direction extending from the flow collector 112 to the flow diffuser 120 side is an arc line which is concave or convex, on the basis that the flow guide portion 131 is generally cone-like and circular truncated cone-like as a whole. By providing the wind shielding body 130 with the flow guide portion 131 that is disposed in a tapered manner from the flow expansion section 121 toward the flow collector 112, the flow collector 112 and/or the flow expansion member 120 at a position corresponding to the flow guide portion 131 gradually reduces the area of the wind passing from the flow collector 112 toward the flow expansion member 120. Thus, when the air flows out of the outer wall surface of the guide portion 131, the air outlet speed can be greatly increased, and the air supply distance of the scroll ring can be increased. In one embodiment, the wind shielding body 130 is made of a heat insulating material. Specifically, the windshield 130 includes, but is not limited to, ceramic, rigid foam polyurethane, resilient foam, glass, vacuum insulation panels, and the like. It can be understood that when the blower port 112a blows out the air flow after heat exchange, condensed water is easily formed on the wind shielding body 130. Therefore, the material of the wind shielding body 130 is a heat insulation material, and condensed water can be prevented from being formed on the wind shielding body 130, so that the condensed water can not drip into the machine to affect charged components, or drip out of the shell 110, and generate noise.
In the experimental process, a CFD numerical simulation method can be specifically adopted for measuring the diameter of the vortex ring and the diameter of the vortex core, a turbulence model for simulating large vortices is selected, and compared with an RANS Reynolds time average model and DES direct simulation, the method can ensure that calculation can be completed in a short time on the premise of accuracy, and can better capture the form of vortices. At the time t when the size of the vortex blown out by the vortex ring generating device 100 is almost unchanged, the blue negative pressure region is observed on a pressure field cloud picture (the range of pressure and vortex quantity is consistent during measurement) to be the vortex, and the diameter of the vortex core and the diameter of the vortex ring can be directly measured on the cloud picture. The diffuser 120 and the wind shielding body 130 are collectively referred to as an air outlet structure. A simulation of the formation and propagation of a vortex ring with and without the outlet structure of the vortex ring generating device 100 is shown in fig. 7. It can be seen that the vortex ring generating device 100 with the outlet structure forms a vortex ring with a larger diameter and a vortex core with a larger diameter, and meanwhile, the dissipation in the propagation process is reduced, the propagation speed is higher, and the propagation distance is also improved.
In one embodiment, as shown in fig. 2 and 6, the vortex ring generating device 100 further includes a driving device 160, the vortex ring generating portion 140 includes an airflow pushing assembly movably installed in the housing 110 to periodically push the airflow to be blown out from the diffuser 120, and the driving device 160 is connected to the airflow pushing assembly to periodically drive the airflow pushing assembly to reciprocate in the housing 110. And the vortex ring generating part 140 periodically drives the airflow to be blown out through the diffuser 120.
In this embodiment, the airflow pushing assembly may be a piston, a push plate, or a combination of a push plate and a film disposed on the periphery of the push plate, and only needs to push the airflow in the casing 110, so that the air outlet 112a blows out the vortex ring, and the structure of the airflow pushing assembly is not specifically limited herein. In order to facilitate the movement of the airflow pushing assembly to the side far away from the air supply opening 112a, ventilation openings may be formed in the bottom wall of the air duct 111 or the side wall adjacent to the bottom wall. When the driving device 160 drives the airflow pushing assembly to move in the housing 110, the air in the air duct 111 and/or the side of the collecting member 112 close to the air supply opening 112a can be compressed, and the air is pushed to form a vortex ring airflow from the diffuser 120 to be blown out. In one embodiment, the piston structure includes a pushing plate and a pushing rod connected to the pushing plate, and the pushing plate is movably connected to the inner wall surfaces of the air duct 111 and/or the flow collecting member 112. The driving device 160 drives the pushing rod to drive the pushing plate to move in the air duct 111 and/or the collecting member 112. When the airflow pushing assembly is a thin film structure, the thin film structure is made of flexible materials or elastic materials. And the thin film structure is fixedly connected with the inner wall surfaces of the air duct 111 and/or the current collecting piece 112, the thin film structure can be pushed and pulled to periodically extrude the air on one side of the air duct 111 and/or the current collecting piece 112 close to the air supply opening 112a, so that the air flow is driven to form vortex ring air flow to blow out from the air supply opening 112 a.
The structure of the driving device 160 may be various. In one embodiment, the driving device 160 includes an electromagnetic driving element, and the airflow pushing assembly is driven to reciprocate by the power on/off of the electromagnetic driving element. In another embodiment, the driving device 160 includes a driving motor, a gear and a rack engaged with each other, one end of the rack is connected to the airflow pushing assembly, and the driving motor drives the gear to drive the rack to move, thereby driving the airflow pushing assembly to reciprocate. The motor can also drive the airflow pushing assembly to move towards the side far away from the air supply opening 112aa, and the elastic resetting piece can realize the resetting movement of the airflow pushing assembly towards the side close to the air supply opening 112 aa. In yet another embodiment, the driving device 160 includes a flexible belt, a pulley, an elastic restoring member, and a motor. The motor drive line wheel drives the flexible belt to be recovered to drive the airflow pushing assembly to move towards one side, when the motor stops rotating, the flexible belt is loosened, and the spring drives the airflow pushing assembly to return to move.
In another embodiment, the vortex ring generating device 100 further includes a driving device 160, the vortex ring generating portion 140 includes an opening and closing door, the opening and closing door is mounted on the wind barrel 111 to block the airflow in the wind barrel 111 from flowing to the current collecting member 112, and the driving device 160 is connected to the opening and closing door to periodically drive the opening and closing door to open or close. So that the vortex ring generating portion 140 periodically supplies the air flow therethrough to blow the air flow out through the diffuser 120.
In this embodiment, it should be noted that when the switch door is closed, i.e. when the airflow in the air duct 111 is blocked from flowing to the collecting member 112, the switch door may be completely closed or partially closed, for example, 2/3, 4/5, 5/6, 9/10 and the like which only close the channel section of the air duct 111. The opening and closing door can be of a shutter structure, a door plate structure, a fan structure and the like. The driving device 160 may include a control rod and a driving member, the driving member may be a gear driving device 160, a hydraulic device, a pneumatic device or a motor driving device 160, and the driving device 160 may drive the opening and closing door to rotate, extend and contract, and the like, so as to drive the opening and closing door to open and close periodically. The control panel controls the driving piece to drive the opening and closing door to reciprocate or repeatedly open or close the air duct. The driving device 160 may be disposed inside the casing 110, or disposed on the casing 110 or outside the casing 110, and in order to prevent the driving device 160 from interfering with the air flow in the air duct, the control member is preferably disposed on the casing 110 or outside the casing 110. It can be understood that the fan may be disposed inside the casing 110 or outside the casing 110 by disposing the fan at a position corresponding to the air outlet 111a or the air inlet of the air duct 111. Sufficient wind is driven by the fan to blow toward the outlet port 111 a.
The switch door can be arranged in the inner cavity of the air duct 111, and the inner cavity of the air duct 111 is divided into two parts, so that the switch door can be used for blocking airflow from flowing to the air outlet 111 a; the switch door may also be disposed at the air outlet 111a of the air duct 111, and at this time, the switch door may block the airflow from flowing from the air outlet 111a to the collecting member 112. When the switch door is closed, namely the airflow in the air duct 111 is blocked to flow to the flow collecting piece 112, air is continuously fed into the air duct 111, a certain amount of airflow can be collected in the air duct 111 at the moment to form a certain pressure, so that when the switch door is opened, the airflow in the air duct 111 can form a driving force and is blown out from the air supply opening 112a to form a vortex ring, and therefore the periodic opening or closing of the switch door enables the airflow to flow out in a pulse mode, and the vortex ring can be used for conducting remote and directional air supply. In other embodiments, a switch door may also be installed on the collecting hood for periodically blocking the air flow from the air outlet 111a to the air inlet 112 a.
The vortex ring generating device 100 of the present invention makes the air flow area of the air supply opening 112a smaller than the air flow area of the air outlet 111a, and the vortex ring generating part 140 periodically drives the air flow to be blown out through the diffuser 120, or the vortex ring generating part 140 periodically passes the air flow to be blown out through the diffuser 120. The vortex ring airflow can be periodically output from the diffuser 120, and directional, fixed-point and remote air supply can be realized. Further, by providing the diffuser 120 with the diffuser 121 located on the collector 112 side away from the air duct 111, the diffuser 121 is provided to be gradually expanded in the air blowing direction of the air blowing port 112a, and by providing the wind shielding body 130 to be attached to the diffuser 120 and/or the collector 112, the wind shielding body 130 has the flow guide 131 provided to be gradually expanded from the diffuser 120 to the collector 112 side. The stable vortex ring airflow is blown out from the diffuser 120, and the vortex ring is larger, and the air outlet speed is faster, so that the air supply distance of the vortex ring is longer, and the air supply radiation range is larger.
In one embodiment, as shown in fig. 3, the included angle α between the diffuser section 121 and the collector 112 in the axial direction is greater than 0 degree and less than or equal to 25 degrees, and the included angle between the diffuser section 121 and the collector 112 in the axial direction may be specifically 5 degrees, 10 degrees, 15 degrees, 18 degrees, 20 degrees, 23 degrees, 25 degrees, etc. when the included angle between the diffuser section 121 and the collector 112 in the axial direction is greater than 25 degrees, the airflow blown out from the air blowing port 112a of the collector 112 is blown out along the axial direction of the collector 112, and enters the diffuser section 121 of the diffuser 120, the vector direction of the fluid velocity of the airflow is changed too much, and the airflow dissipates faster after flowing out through the diffuser section 121, thereby shortening the air blowing distance of the vortex ring.
In another embodiment, the diffuser 120 further includes a smooth section 122, and one end of the smooth section 122 is connected to the periphery of the blowing port 112a of the collecting member 112, and the other end is connected to the diffuser 121. It is understood that the outer contour line of the smooth segment 122 may be a straight line or a curved line. By providing the smooth section 122 to connect the diffuser 120 and the periphery of the air outlet 112a, the air flow blown out from the air outlet 112a of the collector 112 can be smoothly and stably transited to the diffuser 121, and the vector direction of the fluid velocity is prevented from being excessively changed at one time, which causes air flow loss and unstable vortex ring formation.
In addition to the above embodiment, the smoothing section 122 further extends in the axial direction of the current collector 112. In this way, the smooth segment 122 is aligned with the axial direction of the current collector 112, or disposed at an angle of not less than 5 degrees. The air flow is blown out from the air blowing opening 112a of the collecting member 112, and when the air flow enters the smooth section 122 along the axial direction of the collecting member 112, the smooth section 122 can make the outflow of the air flow more stable and concentrated, reduce the turbulent phenomenon, and make the formation of the vortex ring more stable.
Specifically, the ratio of the extended length (e.g., L in fig. 3) of the smoothing section 122 to the equivalent diameter (e.g., D2 in fig. 3) of the air blowing opening 112a is greater than or equal to 0.15 and less than or equal to 0.4. Specifically, the ratio of the extended length of the smoothing section 122 to the equivalent diameter of the blower opening 112a may be 0.15, 0.18, 0.2, 0.25, 0.3, 0.35, 0.4, or the like.
When the shape of the air blowing port 112a is circular, the equivalent diameter thereof is the diameter of the air blowing port 112 a. When the shape of the air blowing opening 112a is an ellipse, the equivalent diameter thereof is equal to the size of the major axis of the elliptical air blowing opening 112 a. When the shape of the air blowing port 112a is polygonal or anisotropic, the equivalent diameter thereof is the diameter of a circumscribed circle of the air blowing port 112 a. It is understood that the larger the equivalent diameter of the blower port 112a, the larger the amount of air blown by the blower port 112 a. When the ratio of the length of the smoothing section 122 to the equivalent diameter of the air blowing opening 112a is less than 0.15, the extension length of the smoothing section 122 is made too short, and the air output of the air blowing opening 112a is large, so that the flow stabilizing effect of the smoothing section 122 is poor. When the ratio of the length of the smooth section 122 to the equivalent diameter of the air supply opening 112a is greater than 0.4, the length of the smooth section 122 is too long, on one hand, the wind resistance is increased, and on the other hand, the overall size of the flow expansion piece 120 is increased, and the occupied space is large. By making the ratio of the length of the smoothing section 122 to the equivalent diameter of the air blowing opening 112a greater than or equal to 0.15 and less than or equal to 0.4, it is possible to reduce the wind resistance and make the entire structure more compact while performing the flow stabilizing function.
In one embodiment, the flow guiding portion 131 is disposed in a conical shape, the cone angle β of the flow guiding portion 131 is greater than or equal to 50 degrees and less than or equal to 130 degrees, by disposing the flow guiding portion 131 in a conical shape, the front wind blocking area is smaller than that of a circular truncated cone and the like due to the fact that the front end of the conical flow guiding portion 131 is a sharp angle, wind resistance and wind loss are reduced, and the flow guiding portion 131 is simple and easy to manufacture by molding.
In an embodiment, the wind shielding body 130 further includes a flow guiding portion 132 connected to the flow guiding portion 131, the flow guiding portion 131 is correspondingly disposed in the flow collecting member 112, the flow guiding portion 132 is correspondingly disposed in the flow expanding member 120, and an annular channel is formed between an outer wall surface of the flow guiding portion 132 and an inner wall surface of the flow expanding member 120.
In this embodiment, the shape of the drainage portion 132 may be a circular truncated cone, a circular cylinder, or a combination of a circular truncated cone and a circular cylinder. Make water conservancy diversion portion 131 correspond and set up in mass flow piece 112, drainage portion 132 corresponds and sets up in expanding a class piece 120, then water conservancy diversion portion 131 can block the air current in the mass flow piece 112 for the air current velocity that blows off from mass flow piece 112 supply-air outlet 112a is faster, when expanding a class piece 120 and drainage portion 132 again and carrying out the drainage, when making the vortex ring air current form more stable, effectual increase vortex ring diameter and vortex core diameter, and then increase air supply distance and air supply range. In other embodiments, it is also possible for the wind deflector to have only the flow guide 131 correspondingly arranged in the collector 112. And the end surface of the guide 131 is flush with the air blowing port 112 a.
Specifically, as shown in fig. 2 and 3, the flow guide portion 132 includes a first flow guide section 132a and a second flow guide section 132b connected to each other, the first flow guide section 132a is disposed corresponding to the smooth section 122, the second flow guide section 132b is disposed corresponding to the flow expansion section 121, an extending direction of the first flow guide section 132a is consistent with an extending direction of the smooth section 122, and an extending direction of the second flow guide section 132b is consistent with an extending direction of the flow expansion section 121. It should be noted that, the extending direction of the first flow guiding section 132a is consistent with the extending direction of the smooth section 122, and the extending direction of the second flow guiding section 132b is consistent with the extending direction of the flow expanding section 121, that is, the extending direction of the first flow guiding section 132a is parallel to the extending direction of the smooth section 122, the extending direction of the second flow guiding section 132b is parallel to the extending direction of the flow expanding section 121, or the extending direction of the first flow guiding section 132a and the extending direction of the smooth section 122 form an included angle of not more than 5 degrees, and the extending direction of the second flow guiding section 132b and the extending direction of the flow expanding section 121 form an included angle of not more than 5 degrees. In this way, the air passing area of the annular air duct is substantially equal in the axial direction of the diffuser 120. Therefore, after the air flow enters the annular air duct from the air supply opening 112a, the flow velocity is more stable, the air outlet is smoother, and further, after the flow is expanded by the flow expansion piece 120, the vortex ring air flow which is more stable, the diameter of the vortex ring is larger, and the air supply distance is farther can be formed. The end surface of the second flow guiding section 132b may be flush with the end surface of the flow expansion section 121, or may be located inside the end surface of the flow expansion section 121, so as to prevent the second flow guiding section 132b from extending outward to form the defects of condensed water and unattractive appearance.
In combination with the above embodiment having the flow guiding part 131 and the flow guiding part 132, further, the ratio of the diameter (e.g., D1 in fig. 3) of the joint of the flow guiding part 131 and the flow guiding part 132 to the equivalent diameter (e.g., D2 in fig. 3) of the air blowing opening 112a is greater than or equal to 0.2 and less than or equal to 0.6. The ratio of the diameter of the joint of the flow guiding part 131 and the flow guiding part 132 to the equivalent diameter of the air supply opening 112a may be specifically 0.2, 0.3, 0.45, 0.5, 0.6, and the like. It is understood that the diameter of the junction of the flow guide 131 and the flow guide 132 refers to the diameter of the large end surface of the flow guide 131 obtained by cutting the junction of the flow guide 131 and the flow guide 132 using a plane perpendicular to the axis of the flow collector 112. When the ratio of the diameter of the joint of the flow guiding part 131 and the flow guiding part 132 to the equivalent diameter of the air supply opening 112a is smaller than 0.2, the maximum wind shielding area of the whole flow guiding part 131 is small, the flow guiding effect of the flow guiding part 131 is not obvious, the change of the air passing area of the passage between the flow guiding part 131 and the flow collecting piece 112 is not obvious, and the change of the air outlet speed of the vortex ring airflow is not obvious. When the ratio of the diameter of the joint of the flow guide portion 131 and the flow guide portion 132 to the equivalent diameter of the air supply opening 112a is greater than 0.6, the air passing area of the passage between the flow guide portion 131 and the flow collecting member 112 is greatly reduced, so that the speed of the outlet air flow is too high, and the outlet air flow blown from the flow spreading member 120 forms a series of vortices and cannot form a vortex ring. Through making the ratio of the diameter that water conservancy diversion portion 131 and drainage portion 132 meet the department and the equivalent diameter of supply-air outlet 112a be greater than or equal to 0.2, and be less than or equal to 0.6, then under the prerequisite that can stably form the vortex ring air current, improve the air-out speed of vortex ring air current, and then increase the air supply distance of vortex ring.
In one embodiment, as shown in fig. 2-6, the vortex ring generating apparatus 100 further includes a mounting bracket 150, and the wind shielding body 130 is connected to the diffuser 120 and/or the collector 112 through the mounting bracket 150.
In this embodiment, the mounting bracket 150 may be detachably connected to the wind shielding body 130, the flow expansion member 120 or the flow collecting member 112, such as by means of a snap, a screw, a magnetic attraction, an engagement, or the like, and the mounting bracket 150 may also be integrally disposed with the wind shielding body 130, the flow expansion member 120 or the flow collecting member 112. Mounting bracket 150 may be one or more connecting rods that directly connect the connecting rods to windshield 130, diffuser 120, and/or collector 112. The mounting bracket 150 may also include a first collar sleeved on the periphery of the wind shielding body 130, a second collar embedded in the flow expanding member 120 and/or the flow collecting member 112, and a connecting rod connecting the first collar and the second collar. To effect connection of the baffle 130 to the diffuser 120 and/or the collector 112. The wind shielding body 130 is fixed in the current collecting member 112 and/or the current expanding member 120 through the mounting bracket 150, the connection structure is simple and easy to realize, and the connection of the wind shielding member 124 is more stable, so that the wind shielding member is not easy to shake, and the noise can be effectively reduced.
On the basis of the above embodiment, please refer to fig. 2 to fig. 6, further, the mounting bracket 150 includes a plurality of supporting arms 151 arranged in a spoke shape, the supporting arms 151 penetrate through the wall surface of the wind shielding body 130, inner ends of the supporting arms 151 are connected, and outer ends are fixedly connected to the flow expanding member 120. The wind shielding body 130 may have a thin-walled structure, and the wind shielding body 130 having the thin-walled structure is light in weight and easy to install. The supporting arms 151 arranged in a spoke shape penetrate through the wall surface of the wind shielding body 130 to fix the wind shielding body 130 on the flow expanding piece 120, so that the wind shielding body 130 is more stably installed, and the wind shielding body 130 is prevented from shaking to generate noise. It will be appreciated that the support arm 151 is in sealing engagement with the wall of the wind shielding body 130, thereby preventing airflow from entering the wind shielding body 130.
The present invention further provides an indoor unit of an air conditioner, please refer to fig. 7, the indoor unit of an air conditioner includes a vortex ring generating device 100, the specific structure of the vortex ring generating device 100 refers to the above embodiments, and since the indoor unit of an air conditioner adopts all technical solutions of all the above embodiments, the indoor unit of an air conditioner at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
In one embodiment, the indoor unit of the air conditioner includes a casing 200, the casing 200 has a main air inlet 210, a main air outlet 220, and a heat exchange air duct communicating the main air inlet 210 and the main air outlet 220, and the air inlet of the vortex ring generating device 100 is communicated with the heat exchange air duct.
Thus, after the air flow subjected to heat exchange of the indoor unit of the air conditioner is blown out by the vortex ring generating device 100, the long-distance, fixed-point and directional air supply of cold air or hot air can be realized. And the vortex ring generating device 100 does not need to be additionally provided with a heat exchanger, thereby simplifying the structure of the vortex ring generating device 100 and saving the cost. The vortex ring generating device 100 can be detachably installed inside the casing 200 of the indoor unit of the air conditioner or outside the casing 200, or can be integrally formed with the casing 200 of the indoor unit of the air conditioner. In other embodiments, the vortex ring generating device 100 may have a separate air duct, and in this case, the air inlet of the vortex ring generating device 100 may be an indoor air inlet, an outdoor air inlet, or the like.
The invention further provides an air conditioner, which comprises an air conditioner indoor unit and an air conditioner outdoor unit which are connected through a refrigerant pipe, wherein the air conditioner indoor unit comprises a vortex ring generating device 100, the specific structure of the vortex ring generating device 100 refers to the embodiments, and the air conditioner indoor unit adopts all the technical schemes of all the embodiments, so that the air conditioner indoor unit at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (16)
1. A vortex ring generating apparatus, comprising:
the air conditioner comprises a shell, wherein the shell comprises an air cylinder and a flow collecting piece, an air outlet is formed in one end of the air cylinder, the flow collecting piece is installed at the air outlet, an air supply outlet is formed in the flow collecting piece, and the air passing area of the air supply outlet is smaller than that of the air outlet;
the flow expansion piece is arranged on the shell, is arranged around the air supply opening and is communicated with the air supply opening, and is provided with a flow expansion section which is positioned on one side of the flow collecting piece away from the air duct and is arranged in a gradually expanding manner in the air supply direction of the air supply opening;
the wind shielding body is correspondingly arranged in the flow expanding piece and/or the flow collecting piece and is provided with a flow guide part which is gradually reduced from the flow expanding section to one side of the flow collecting piece; and
and the vortex ring generating part is arranged on the shell, and periodically drives the airflow to be blown out through the flow expanding piece, or periodically supplies the airflow to pass through so as to blow out the airflow through the flow expanding piece.
2. The vortex ring generating apparatus according to claim 1, wherein an angle between said diffuser section and said collector axis is greater than 0 degrees and less than or equal to 25 degrees.
3. The vortex ring generating apparatus according to claim 1, wherein said diffuser further comprises a smooth section, one end of said smooth section is connected to a periphery of said blowing port of said collector, and the other end is connected to said diffuser.
4. The vortex ring generating apparatus according to claim 3 wherein said smooth section extends in the direction of the axis of said collector.
5. The vortex ring generating apparatus according to claim 3, wherein a ratio of an extended length of said smooth section to an equivalent diameter of said blowing port is greater than or equal to 0.15 and less than or equal to 0.4.
6. The vortex ring generating device according to any one of claims 3 to 5, wherein the flow guiding portion is conically disposed, and a conical angle of the flow guiding portion is greater than or equal to 50 degrees and less than or equal to 130 degrees.
7. The vortex ring generating device according to claim 6, wherein the wind shielding body further comprises a flow guiding portion connected to the flow guiding portion, the flow guiding portion is correspondingly disposed in the flow collecting member, the flow guiding portion is correspondingly disposed in the flow expanding member, and an annular channel is formed between an outer wall surface of the flow guiding portion and an inner wall surface of the flow expanding member.
8. The vortex ring generating device according to claim 7, wherein the flow guiding portion comprises a first flow guiding section and a second flow guiding section which are connected, the first flow guiding section is arranged corresponding to the smooth section, the second flow guiding section is arranged corresponding to the flow expanding section, the extending direction of the first flow guiding section is consistent with the extending direction of the smooth section, and the extending direction of the second flow guiding section is consistent with the extending direction of the flow expanding section.
9. The vortex ring generating apparatus according to claim 7, wherein a ratio of a diameter of a portion where the guide portion meets the guide portion to an equivalent diameter of the blowing port is greater than or equal to 0.2 and less than or equal to 0.6.
10. The vortex ring generating apparatus according to claim 1, wherein said vortex ring generating apparatus further comprises a mounting bracket, said wind shielding body being connected to said diffuser and/or said collector through said mounting bracket.
11. The vortex ring generating apparatus according to claim 10, wherein the mounting bracket comprises a plurality of supporting arms arranged in a spoke shape, the supporting arms penetrate through the wall surface of the wind shielding body, inner ends of the supporting arms are connected, and outer ends of the supporting arms are fixedly connected to the flow expanding member.
12. The vortex ring generating apparatus according to claim 1, wherein a ratio of an equivalent diameter of the air supply opening to an equivalent diameter of the air outlet opening is greater than or equal to 0.5 and less than or equal to 0.75.
13. The vortex ring generating apparatus according to claim 1, wherein said vortex ring generating portion further comprises a driving device, said vortex ring generating portion comprises an airflow pushing assembly movably mounted in said housing for periodically pushing airflow to be blown out by said diffuser, said driving device is connected to said airflow pushing assembly for periodically driving the airflow pushing assembly to reciprocate in said housing.
14. The vortex ring generating device according to claim 1, wherein said vortex ring generating portion further comprises a switch door mounted to said air duct for blocking the air flow in said air duct from flowing to said collecting member, and said driving device is connected to said switch door for periodically driving said switch door to open or close.
15. An indoor unit of an air conditioner, comprising a casing and the vortex ring generating device according to any one of claims 1 to 14;
the shell is provided with a main air inlet, a main air outlet and a heat exchange air channel communicated with the main air inlet and the main air outlet, and the air inlet of the vortex ring generating device is communicated with the heat exchange air channel.
16. An air conditioner comprising an outdoor unit and the indoor unit as claimed in claim 15, wherein the outdoor unit is connected to the indoor unit through refrigerant pipes.
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