CN114060914A - Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit - Google Patents

Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit Download PDF

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Publication number
CN114060914A
CN114060914A CN202010751713.7A CN202010751713A CN114060914A CN 114060914 A CN114060914 A CN 114060914A CN 202010751713 A CN202010751713 A CN 202010751713A CN 114060914 A CN114060914 A CN 114060914A
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CN
China
Prior art keywords
air outlet
air
flow
arc
outlet duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010751713.7A
Other languages
Chinese (zh)
Inventor
尹晓英
袁俊军
李英舒
张蕾
王永涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202010751713.7A priority Critical patent/CN114060914A/en
Priority to PCT/CN2021/090685 priority patent/WO2021223648A1/en
Publication of CN114060914A publication Critical patent/CN114060914A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • 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
    • 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

Abstract

The invention relates to a jet device for a cabinet air conditioner indoor unit and the cabinet air conditioner indoor unit. The fluidic device comprises: the air outlet duct extends along the vertical direction, a vertically extending flow guide cavity is defined in the air outlet duct, and a strip-shaped air outlet extending along the vertical direction is formed in one side surface of the air outlet duct; and the jet fan is arranged below the air outlet duct and is communicated with the air outlet duct fluid so as to controllably drive the air flow outside the jet device to flow into the air outlet duct, and the air flow flowing into the air outlet duct flows out of the air outlet after being guided by the guide cavity and is mixed with the heat exchange air flow flowing out of the heat exchange air flow outlet, so that the overcooling or overheating of the air outlet of the indoor unit of the cabinet air conditioner is avoided, and the comfort experience of the indoor unit of the cabinet air conditioner is improved. The jet fan is arranged for active jet, so that the jet air quantity is greatly improved, the jet air quantity adjusting range is wide, the air quantity is not influenced by other external factors, and the control is accurate and stable.

Description

Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit
Technical Field
The invention relates to the technical field of air conditioners, in particular to a jet device for a cabinet air conditioner indoor unit and the cabinet air conditioner indoor unit.
Background
At present, the air outlets of most indoor cabinet air conditioners in the market are strip-shaped air outlets extending along the vertical direction so as to obtain a larger air supply range in the vertical direction. The applicant of the application has designed a double-through-flow air conditioner indoor unit, wherein two sets of through-flow fans are arranged in a shell, air inlets corresponding to the two sets of through-flow fans are respectively arranged at two side parts of the shell, and an air outlet is formed at the front part of the shell so as to improve the air supply efficiency. In addition, in order to realize the comfort of air supply, an air induction port is formed between the two air inlets and the rear part of the shell, a through air duct which is through from front to back is formed on the shell and/or in the shell, one end of the through air duct is communicated with the air outlet, and the other end of the through air duct is communicated with the air induction port. When the air conditioner operates, the air outlet of the air outlet can form negative pressure in the through air channel, indoor non-heat exchange air can be introduced into the through air channel through the air induction port under the action of the negative pressure, and therefore the non-heat exchange air is mixed with the heat exchange air at the air outlet and then sent to the indoor space, and the purpose of comfortable air supply is achieved.
However, the non-heat exchange air is passively introduced into the through air duct under the action of negative pressure generated by the outlet air, the induced air volume is relatively small, and the induced air volume is easily influenced by various factors such as the rotating speed of the cross flow fan, the size of the induced air opening, the shape of the through air duct and the like, is very unstable and is not easy to control or adjust.
Disclosure of Invention
An object of the first aspect of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a fluidic device for a cabinet air conditioner indoor unit capable of active fluidic for increasing the induced air volume of the cabinet air conditioner indoor unit having the fluidic device.
It is a further object of the first aspect of the present invention to increase the air outlet speed and the air supply distance of the jet device.
It is a further object of the first aspect of the present invention to improve the uniformity of the outlet air in the vertical direction of the jet device.
The invention also provides a cabinet air conditioner indoor unit with the jet device.
According to a first aspect of the invention, the invention provides a fluidic device for a cabinet air-conditioning indoor unit having a heat exchange airflow outlet extending vertically, comprising:
the air outlet duct extends along the vertical direction, a vertically extending flow guide cavity is defined in the air outlet duct, and a strip-shaped air outlet extending along the vertical direction is formed in one side surface of the air outlet duct; and
and the jet flow fan is arranged below the air outlet duct and is communicated with the air outlet duct in a fluid manner so as to controllably drive the airflow outside the jet flow device to flow into the air outlet duct, and the airflow flowing into the air outlet duct flows out of the air outlet after being guided by the guide cavity and is mixed with the heat exchange airflow flowing out of the heat exchange airflow outlet.
Optionally, the air outlet is located at the front side of the air outlet duct;
two arc-shaped guide plates which extend vertically are symmetrically arranged inside the air outlet duct, and the two arc-shaped guide plates are convexly bent from back to front towards the direction close to each other, so that the front part of the air outlet, which is close to the guide cavity, forms a gradually-reduced arc-shaped closing part.
Optionally, the arc-shaped mouth-closing part extends forwards to the air outlet, and the size of the foremost end of the arc-shaped mouth-closing part in the transverse direction is consistent with the size of the air outlet in the transverse direction.
Optionally, the cross section of the diversion cavity is in a tapered shape in the direction from back to front; and is
The width of the rearmost end of the diversion cavity in the transverse direction is 5-10 times of the width of the air outlet in the transverse direction.
Optionally, the cross section of the diversion cavity is in a tapered shape in the direction from back to front; and is
The ratio of the width of the rearmost end of the flow guide cavity in the transverse direction to the depth of the flow guide cavity in the front-back direction is any ratio within the range of 2: 11-2: 9.
Optionally, the ratio of the length of the arc-shaped guide plate in the front-back direction to the depth of the guide cavity in the front-back direction is any ratio in the range of 4:11 to 7: 11.
Optionally, the cross section of the air outlet duct is trapezoidal, the upper bottom of the trapezoid is located on the front side where the air outlet is located, and the lower bottom of the trapezoid is located on the rear side away from the air outlet;
the rear ends of the two arc-shaped guide plates are bent forwards and extend from the air outlet duct corresponding to the two side plates of the two trapezoidal waists respectively.
Optionally, a plurality of flow deflectors extending in the front-rear direction and located inside the air outlet are arranged in the flow guiding cavity, and the flow deflectors are arranged at intervals in the vertical direction; and is
The length of the flow deflector in the front-back direction is less than or equal to the length of the arc-shaped flow deflector in the front-back direction, so that the flow deflector is positioned in the arc-shaped closing part.
Optionally, a plurality of flow deflectors extending in the front-rear direction and located inside the air outlet are arranged in the flow guiding cavity, and the flow deflectors are arranged at intervals in the vertical direction; and is
The air outlet is located the front side in air-out wind channel, the water conservancy diversion piece includes from down supreme by the arc section of backward forward bending extension and by the end of arc section extends forward to the straight section of air outlet.
Optionally, the length of the curved section in the front-rear direction is equal to or greater than the length of the straight section in the front-rear direction.
Optionally, the straight section of each of the guide vanes is equal in length in the front-rear direction; and is
The lengths of the arc-shaped sections of the guide vanes in the front and rear directions are equal; or the lengths of the arc-shaped sections of the guide vanes which are sequentially arranged from bottom to top in the front-back direction are sequentially increased, and the rear end parts of the guide vanes are positioned on an inclined straight line.
Optionally, the bottom of the air outlet duct is in fluid communication with the top of the jet fan through a volute duct;
the jet fan is a centrifugal fan or an axial flow fan.
According to a second aspect of the invention, the invention also provides a cabinet air-conditioning indoor unit comprising:
the shell is provided with a heat exchange airflow outlet used for conveying heat exchange airflow to the indoor space; and
the jet device is used for controllably promoting airflow outside the jet device to flow into the jet device and send the airflow out through the air outlet of the jet device, and the airflow sent out through the air outlet is mixed with the heat exchange airflow flowing out through the heat exchange airflow outlet.
The jet device is used for the cabinet air-conditioning indoor unit with the vertically extending heat exchange airflow outlet, the jet device is provided with the air outlet duct extending along the vertical direction and the jet fan arranged below the air outlet duct, airflow outside the jet device can be actively injected into the air outlet duct through the jet fan, the airflow entering the air outlet duct flows out from the strip-shaped air outlet of the air outlet duct after being guided by the guide cavity and is mixed with the heat exchange airflow flowing out from the heat exchange airflow outlet, the air outlet of the cabinet air-conditioning indoor unit is prevented from being too cold or too hot, and the comfort experience of the cabinet air-conditioning indoor unit is improved. Compared with the mode of utilizing negative pressure passive drainage in the prior art, the negative pressure passive drainage device has the advantages that the jet fan is arranged for active jet, the jet air quantity is greatly improved, the specific air quantity entering the air outlet duct can be controlled by adjusting the jet fan, the air quantity is not influenced by other external factors, and the control is accurate and stable.
Further, the inside in air-out wind channel is equipped with two arc guide plates, and two arc guide plates are by the backward forward towards the direction protrusion bending that is close to each other to the anterior formation convergent arc mouth of closing up of the adjacent air outlet in water conservancy diversion chamber, the convergent arc mouth of closing up that the guide plate of this kind of shape formed can reduce air current flow resistance as far as possible, improve the air current velocity of flow to the air outlet, thereby improved fluidic device's air-out speed, prolonged its air supply distance.
Further, because the jet fan is arranged below the air outlet duct, the air flow flows into the air outlet duct from bottom to top, and therefore how to realize uniform air outlet in the vertical direction at the air outlet is the design difficulty and the design key point of the application. For this reason, this application is equipped with a plurality of deflectors of vertical interval arrangement of edge in arc closing up portion to make the air-out of air outlet in vertical direction more even through the cooperation of arc closing up portion and deflector.
Further, this application designs the water conservancy diversion piece into have from down supreme by the curved arc section of extending of backward forward and by the straight section of the terminal forward extension of arc section to the bar air outlet, and accessible arc section will remain in its inboard by the air current of the predetermined volume that flows from bottom to top to with its water conservancy diversion to straight section, through straight section with this air current of predetermined volume guide to the air outlet to realize the air-out homogeneity of air outlet in vertical direction.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a fluidic device for a cabinet air conditioner indoor unit according to one embodiment of the present invention;
FIG. 2 is a schematic front view of an air outlet duct according to one embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along section line A-A in FIG. 2;
fig. 4 is a schematic enlarged view of a portion C in fig. 3;
FIG. 5 is a schematic cross-sectional view taken along section line B-B in FIG. 2;
fig. 6 is a schematic structural view of a cabinet air-conditioning indoor unit according to one embodiment of the present invention.
Detailed Description
The invention firstly provides a jet device which is applied to a cabinet air-conditioning indoor unit, wherein the cabinet air-conditioning indoor unit is provided with a heat exchange airflow outlet which extends vertically and is used for conveying heat exchange airflow which is subjected to heat exchange through an indoor heat exchanger to the indoor.
Fig. 1 is a schematic structural diagram of a jet device for a cabinet air conditioner indoor unit according to an embodiment of the present invention, and the jet device 1 of the present invention may include an air outlet duct 10 and a jet fan 20.
Fig. 2 is a schematic front view of an air outlet duct according to an embodiment of the present invention, fig. 3 is a schematic cross-sectional view taken along a sectional line a-a in fig. 2, fig. 4 is a schematic enlarged view of a portion C in fig. 3, and fig. 5 is a schematic cross-sectional view taken along a sectional line B-B in fig. 2.
Referring to fig. 2 to 5, the air outlet duct 10 extends in a vertical direction, a vertically extending flow guide cavity 11 is defined in the air outlet duct 10, and a strip-shaped air outlet 12 extending in the vertical direction is disposed on one side surface of the air outlet duct 10. The jet fan 20 is disposed below the air outlet duct 10 and is in fluid communication with the air outlet duct 10 to controllably drive the air flow outside the jet device 1 to flow into the air outlet duct 10, and the air flow flowing into the air outlet duct 10 is guided by the guide cavity 11, then flows out from the strip-shaped air outlet 12 and is mixed with the heat exchange air flow flowing out from the heat exchange air flow outlet of the indoor unit of the cabinet air conditioner.
According to the jet device 1 disclosed by the invention, the airflow outside the jet device 1 can be actively injected into the air outlet duct 10 through the jet fan 20, the airflow entering the air outlet duct 10 is guided by the guide cavity 11 and then flows out of the air outlet 12 of the air outlet duct 10 and is mixed with the heat exchange airflow flowing out of the heat exchange airflow outlet, so that the overcooling or overheating of the outlet air of the indoor unit of the cabinet air conditioner is avoided, and the comfort experience of the indoor unit of the cabinet air conditioner is improved. Compared with the mode of utilizing negative pressure passive drainage in the prior art, the negative pressure passive drainage device has the advantages that the jet fan 20 is arranged for active jet, the jet air quantity is greatly improved, the specific air quantity entering the air outlet duct 10 can be controlled by adjusting the rotating speed of the jet fan 20, the air quantity is not influenced by other external factors, and the control is accurate and stable.
Because the jet device 1 is applied to the cabinet air-conditioning indoor unit with the vertically extending heat exchange airflow outlet, the air outlet 12 of the jet device 1 is designed into the vertically extending strip-shaped air outlet so as to be matched with the heat exchange airflow outlet, so that the heat exchange airflow flowing out of each position of the heat exchange airflow outlet can be mixed with the airflow flowing out of the air outlet 12 without heat exchange, the air outlet of each position of the cabinet air-conditioning indoor unit is softer, and the use experience of a user is improved. Specifically, the air outlet 12 may be aligned with the heat exchange airflow outlet in the vertical direction, so as to better mix the two airflows flowing out from the two outlets.
Meanwhile, the jet flow fan 20 is arranged below the air outlet duct 10 of the jet flow device 1, so that the size of the jet flow device 1 in the transverse direction can be reduced as much as possible, the vertical height of the jet flow device 1 is higher, the advantages of the cabinet air conditioner indoor unit in the height direction are fully utilized, the layout between the jet flow device 1 and other structures of the cabinet air conditioner indoor unit is more compact, and the problems that the cabinet air conditioner indoor unit is overlarge in size and too much in occupied space after the jet flow device 1 is applied to the cabinet air conditioner indoor unit are solved.
However, the air outlet 12 is a vertically extending strip-shaped air outlet, the jet fan 20 is disposed below the air outlet duct 10, and the airflow flows into the air outlet duct 20 from bottom to top and is perpendicular to the air outlet direction of the air outlet 12, so how to ensure that the air outlet 12 sends out airflow with a high flow rate and how to achieve uniform air outlet of the air outlet 12 in the vertical direction are design difficulties and design points of further embodiments of the present application.
The heat exchange airflow outlet is usually located at the front side of the cabinet air conditioner indoor unit so as to supply air towards the front side. Therefore, in some embodiments, the strip-shaped air outlet 12 is located at the front side of the air outlet duct 10 so as to be mixed with the heat exchange air flowing out from the heat exchange air outlet.
Further, two arc-shaped guide plates 13 extending vertically are symmetrically arranged inside the air outlet duct 10, and the two arc-shaped guide plates 13 are convexly bent from back to front towards the direction close to each other, so that the front part of the guide cavity 11, which is adjacent to the strip-shaped air outlet 12, forms a gradually-tapered arc-shaped mouth 111. That is, the arc-shaped mouth portion 111 is tapered from back to front and is substantially funnel-shaped from back to front. The tapered arc-shaped closing part formed by the guide plate in the shape can reduce the flow resistance of the airflow as much as possible and improve the flow velocity of the airflow flowing to the air outlet 12, thereby improving the air outlet speed of the jet device 1 and prolonging the air supply distance of the jet device.
In some embodiments, the cross section of the air outlet duct 10 is a trapezoid, an upper bottom of the trapezoid is located on the front side of the strip-shaped air outlet 12, and a lower bottom of the trapezoid is located on the rear side away from the strip-shaped air outlet 12. The rear ends of the two arc-shaped guide plates 13 are respectively bent and extended forwards by the two side plates of the air outlet duct 10 corresponding to the two trapezoidal waists. Specifically, the air outlet duct 10 has a front side plate 10a, a rear side plate 10b and two transverse side plates 10c, the air outlet 12 is formed on the front side plate 10a, the cross section of the front side plate 10a is a trapezoidal upper bottom, the cross section of the rear side plate 10b is a trapezoidal lower bottom, and the cross sections of the two transverse side plates 10c are trapezoidal two waists. The two arc-shaped guide plates 13 are bent and extended forwards from the inner surfaces of the two transverse side plates 10c respectively. That is, the rear ends of the two arc-shaped deflectors 13 do not extend to the rearmost side of the air outlet duct 10. The baffle chamber 11 thus formed comprises two parts, namely an arc-shaped mouth portion 111 at the front and a trapezoid-shaped cavity 112 at the rear, and the boundary between the trapezoid-shaped cavity 112 and the arc-shaped mouth portion 111 is shown by a dotted line in fig. 5.
The trapezoidal cavity 112 has a shape that is gradually reduced from back to front so that the airflow flows toward the arc-shaped closing-in portion 111 at an accelerated speed, and the rear side of the trapezoidal cavity 112 has a larger area so that the airflow entering the air outlet duct 10 flows from bottom to top through the rear side of the trapezoidal cavity 112, thereby reducing the flow resistance of the airflow and facilitating the formation of more uniform air supply at the air outlet 12.
In some embodiments, the arc-shaped mouth portion 111 extends forward to the strip-shaped air outlet 12, and the dimension of the foremost end of the arc-shaped mouth portion 111 in the lateral direction coincides with the dimension of the air outlet 12 in the lateral direction. That is, the front end of the arc-shaped closing portion 111 is in seamless butt joint with the air outlet 12, so that the turbulence near the air outlet 12 can be avoided.
In some embodiments, the flow guide cavity 11 is tapered in cross-section in a direction from back to front. Specifically, the cross section of the diversion cavity 11 may be in a regular tapered shape in the front-rear direction, or may be in an irregular tapered shape. For example, the diversion cavity 11 shown in fig. 5 has a trapezoidal cavity 112 and an arc-shaped closing part 111 arranged from back to front, and both the trapezoidal cavity 112 and the arc-shaped closing part 111 are tapered from back to front, so that the diversion cavity 11 is formed in a tapered shape that is irregular from back to front.
Further, the width W of the rearmost end of the guide chamber 11 in the lateral direction4Width W of the outlet 12 in the transverse direction 65 to 10 times of the total weight of the composition. Because the diversion cavity 11 is gradually reduced from back to front, and the arc-shaped closing part 111 is in seamless butt joint with the air outlet 12, the width of the rearmost end of the diversion cavity 11 is the maximum width of the diversion cavity, and the width of the air outlet 12 is the minimum width of the diversion cavity 11. That is, the maximum width of the diversion cavity 11 is 5 to 10 times of the minimum width thereof. For example, the maximum width of the diversion cavity 11 may be 5 times, 6 times, 7 times, 8 times, 9 times, or 10 times its minimum width. From this, on the one hand can ensure that water conservancy diversion chamber 11 rear portion has the area that can make the most air current that gets into in the air-out wind channel 10 upwards flow, and on the other hand still makes the width of air outlet 12 small enough, makes its whole be vertical extension's slit form air outlet 12 so that the air current obtains big enough acceleration when flowing forward from the back to obtain great air-out speed and air supply distance. More importantly, the air outlet 12 can uniformly discharge air in the vertical direction. Flow guide cavity 1The above-mentioned proportional design of the maximum width and the minimum width of 1 is a result obtained by balancing various technical problems, and achieves better technical effects in the above-mentioned aspects. On the contrary, if the width of the rearmost end of the diversion cavity 11 is too large compared with the width of the air outlet 12, the area at the rear part of the diversion cavity 11 is too large, the distance between the airflow and the air outlet 12 is far away when the airflow flows through the rear part of the diversion cavity 11, most of the airflow can directly flow upwards through the rear part of the diversion cavity 11 at the moment, the airflow flowing to the air outlet 12 is very small, the air output at the top of the air outlet 12 is large, the air output at the bottom and the middle part of the air outlet 12 is very small, and the air output of the air outlet 12 is very unbalanced. If the width of the rearmost end of the flow guide cavity 11 and the width multiple of the air outlet 12 are small, the width difference between the two is small, the acceleration effect obtained when the airflow flows from back to front is not obvious, and the air outlet speed and the air supply distance of the air outlet 12 are both small.
In some embodiments, the flow guide cavity 11 is tapered in cross-section in a direction from back to front. Width W of rearmost end of flow guide cavity 11 in lateral direction4And the depth H of the diversion cavity 11 in the front and back directions4The ratio of the two is any ratio in the range of 2: 11-2: 9. For example, width W4And depth H4The ratio between may be 2:11, 2:10 or 2: 9. Therefore, a reasonable proportional relation is kept between the air flow allowed to pass through the rear part of the diversion cavity 11 and the air flow capable of obtaining better acceleration in the diversion cavity 11 from back to front, and the width W is avoided4And depth H4Too small a ratio therebetween results in insufficient acceleration or width W of the air flow to the outlet 124And depth H4The too large ratio between them causes the problem that the air flow to the bottom of the outlet 12 is large and the air flow to the bottom of the outlet 12 is small.
In some embodiments, the length H of the curved baffle 13 in the fore-aft direction5And the depth H of the diversion cavity 11 in the front and back directions4The ratio between the two is any ratio in the range of 4: 11-7: 11. It can be understood that the length H of the arc-shaped baffle 13 in the front-rear direction5The front end and the rear end of the arc-shaped guide plate 13 are vertically spaced in the front-rear direction. Example (b)E.g. length H5And depth H4The ratio therebetween may be 4:11, 5:11, 6:11, or 7: 11. Therefore, on the one hand, the rear portion of the diversion cavity 11 can be ensured to have an area capable of enabling most of the air flow entering the air outlet duct 10 to flow upwards, and on the other hand, the arc-shaped closing part 111 can be ensured to have a reasonable length, so that the part of the air flow flowing from bottom to top can be accelerated better, and a larger air outlet speed can be obtained. On the contrary, if the length H is long5And depth H4If the ratio is too small, the acceleration effect of the arc-shaped closing part 111 on the airflow is not obvious, and the air outlet speed of the air outlet 12 is low. If the length H is5And depth H4If the ratio between the air flow and the air flow is too large, most of the air flow in the diversion cavity 11 can be sent out from the bottom of the air outlet 12 at an accelerated speed under the action of the arc-shaped closing-in part 111, so that the phenomenon of uneven air supply caused by large bottom air volume and small top air volume of the air outlet 12 is caused.
In some embodiments, a plurality of flow deflectors 14 extending in the front-rear direction are disposed inside the air outlet 12 in the flow guiding cavity 11, and the plurality of flow deflectors 14 are arranged at intervals in the vertical direction for guiding the air flow in the flow guiding cavity 11 to flow toward the air outlet 12.
Further, the length W of the guide vane 14 in the front-rear direction1The length H of the arc-shaped guide plate 13 in the front-back direction is less than or equal to5So that the guide vane 14 is within the arcuate mouth 111. That is to say, this application is equipped with a plurality of baffles 14 along vertical interval arrangement in arc closing portion 111 to make the air-out of air outlet 12 on vertical direction more even through the cooperation of arc closing portion 111 and baffles 14. The baffle 14 is located in the arc-shaped closing-in portion 111, so as to avoid the guiding effect of the front-back direction on the airflow flowing in the rear space of the baffle cavity 11, so as to facilitate the airflow entering the air outlet duct 10 to flow from bottom to top, and facilitate the air outlet 12 to achieve uniform air outlet in the vertical direction.
In some embodiments, a plurality of flow deflectors 14 extending in the front-rear direction are disposed inside the air outlet 12 in the flow guiding cavity 11, and the plurality of flow deflectors 14 are arranged at intervals in the vertical direction for guiding the air flow in the flow guiding cavity 11 to flow toward the air outlet 12. Further, the strip-shaped air outlet 12 is located at the front side of the air outlet duct 10, and the baffle 14 may include an arc-shaped section 141 extending from the rear to the front in a curved manner from bottom to top, and a straight section 142 extending from the end of the arc-shaped section 141 to the strip-shaped air outlet 12 in a forward manner. Therefore, a preset amount of airflow in the airflow flowing from bottom to top can be retained inside the arc-shaped section 141 through the special shape, the airflow is guided to the straight section 142 on the premise of reducing the flow resistance of the part of airflow after encountering the arc-shaped section 141 as much as possible, and the preset amount of airflow is guided to the air outlet 12 through the straight section 142, so that the air outlet uniformity of the air outlet 12 in the vertical direction is further improved through the matching of the plurality of guide vanes 14.
Furthermore, the flat section 142 is specially designed at the front part of the flow deflector 14 adjacent to the air outlet 12, and the air flow can be guided horizontally to be sent out through the air outlet 12 through the flat section 142, so that the direction of the air flow sent out by the jet device 1 is consistent with the direction of the air flow sent out by the heat exchange air flow outlet of the cabinet air-conditioning indoor unit, and the overall air supply speed and the overall air supply distance of the cabinet air-conditioning indoor unit are higher and longer on the premise of ensuring better mixing effect of the two air flows.
In some embodiments, the length W of the arcuate section 141 in the fore-aft direction3A length W of the straight section 142 in the front-rear direction or longer2. Thus, on the one hand, the arc-shaped section 141 can be made to have a relatively long length in the front-rear direction to increase the length of the guide path of the air flow by the arc-shaped section 141 and reduce the curvature of the arc-shaped section 141, thereby reducing the flow resistance of the air flow after encountering the arc-shaped section 141 as much as possible. On the other hand, on the basis of ensuring the normal flow guiding function of the straight section 142, the length of the straight section 142 in the front-back direction is shorter, so that the length of the whole flow deflector 14 in the front-back direction is reduced, the size of the jet device 1 in the front-back direction is reduced, and the jet device is more suitable for a cabinet air conditioner indoor unit with a compact structure and a high volume requirement.
In some embodiments, the straight section 142 of each guide vane 14 has an equal length in the fore-aft direction, and the curved section 141 of each guide vane 14 has an equal length in the fore-aft direction. That is, the size of each guide vane 14 is the same, so as to facilitate mold opening and save cost. The applicant verifies through deep analysis and a large amount of simulation, experiments and the like that: as long as the sizes of the diversion cavity 11, the arc-shaped diversion plate 13 and/or the diversion sheet 14 are designed according to the scheme in the above embodiment, and the jet fan 20 continuously supplies air towards the air outlet duct 10, even if the sizes of each diversion sheet 14 are the same, uniform air outlet of the air outlet 12 in the vertical direction can be realized.
In other embodiments, the straight section 142 of each guide vane 14 has the same length in the front-rear direction, and the arc-shaped sections 141 of the plurality of guide vanes 14 arranged in sequence from bottom to top have sequentially increasing lengths in the front-rear direction. Therefore, the problem that the airflow remaining inside the guide vane 14 is too much due to the fact that the guide vane 14 located at the bottom extends out too long backwards, so that the airflow at the top inside the guide chamber 11 is less can be avoided, and meanwhile, the problem that the airflow guided by the upper guide vane 14 is less due to the fact that the arc-shaped sections 141 of the guide vanes 14 are long and the like can be avoided, so that the uniform air outlet of the air outlet 12 in the vertical direction is ensured.
Further, the rear end portions of the plurality of guide vanes 14 are in an inclined straight line. That is to say, the arc-shaped sections 141 of the plurality of guide vanes 14 arranged from bottom to top in sequence are extended in sequence at equal intervals, so as to further ensure uniform air outlet of the air outlet 12 in the vertical direction.
In some embodiments, the bottom of the outlet duct 10 is in fluid communication with the top of the jet fan 20 via a volute duct 30. Specifically, the air inlet of the air outlet duct 10 is disposed at the bottom thereof, the airflow outlet of the jet fan 20 is disposed at the top thereof, and a volute duct 30 is hermetically connected between the air inlet of the air outlet duct 10 and the airflow outlet of the jet fan 20, so as to guide the airflow sent by the jet fan 20 to the air outlet duct 10. In general, in order to obtain a better air supply range, the heat exchange airflow outlet of the cabinet air conditioner indoor unit has a certain height. In order to avoid the air outlet 12 of the air outlet duct 10 from being too low, a volute duct 30 is provided between the bottom of the air outlet duct 10 and the top of the jet fan 20, so that the jet device 1 can be better matched with other structures of the cabinet air conditioner indoor unit.
Further, the height of the volute duct 30 in the vertical direction is set so that the air outlet 12 of the air outlet duct 10 is the same as the height of the heat exchange airflow outlet of the indoor unit of the cabinet air conditioner, so that the airflow sent out from the air outlet 12 is better mixed with the heat exchange airflow flowing out from the heat exchange airflow outlet.
In some embodiments, the jet fan 20 may be a centrifugal fan or an axial fan, which has a small volume and a long range, and is very suitable for sucking air from the side and blowing air upwards.
Fig. 6 is a schematic structural view of the cabinet air-conditioning indoor unit according to an embodiment of the present invention, and referring to fig. 6, the cabinet air-conditioning indoor unit 4 of the present invention includes a cabinet 5, and the cabinet 5 has a heat exchange air flow outlet 51 for delivering a heat exchange air flow into a room. The number of the heat exchange gas flow outlets 51 may be one, or two or more. The casing 5 may be provided therein with a heat exchange device for exchanging heat with an air flow to generate a heat exchange air flow, and an air supply fan for driving the air flow to enter through an air inlet 52 of the casing 5 and to be sent out through a heat exchange air flow outlet 51, where the air supply fan may be a cross flow fan, and the number of the cross flow fans may be one or two.
In particular, the cabinet air-conditioning indoor unit 4 further includes the fluidic device 1 described in any of the above embodiments, and the fluidic device 1 is configured to controllably cause the airflow outside the cabinet air-conditioning indoor unit to flow into the cabinet air-conditioning indoor unit and to be sent out through the air outlet 12 of the cabinet air-conditioning indoor unit, and to mix the airflow sent out through the air outlet 12 without heat exchange with the heat exchange airflow flowing out through the heat exchange airflow outlet 51, so as to avoid the air outlet of the cabinet air-conditioning indoor unit 4 from being too cold or too hot, and improve the softness of the air outlet and the comfort experience of the user.
The cabinet air-conditioner indoor unit 4 with the jet device 1 has large air flow which is not subjected to heat exchange and long air supply distance, and the whole air supply quantity and the air supply range of the cabinet air-conditioner indoor unit 4 are improved. In addition, the adjustable range of the airflow which is injected by the jet device 1 and is not subjected to heat exchange is large, and various different use requirements of users are met.
Specifically, the jet device 1 may be connected to the casing 5 and matched with the external shape structure of the casing 5, and the air outlet 12 of the jet device 1 is disposed adjacent to the heat exchange airflow outlet 51 on the casing 5.
It should be further understood by those skilled in the art that the terms "upper", "lower", "front", "back", "top", "bottom", etc. used in the embodiments of the present invention are used with reference to the actual usage status of the fluidic device 1 and the cabinet air conditioner indoor unit 4, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (13)

1. A fluidic device for a cabinet air-conditioning indoor unit having a heat exchange airflow outlet extending vertically, characterized in that it comprises:
the air outlet duct extends along the vertical direction, a vertically extending flow guide cavity is defined in the air outlet duct, and a strip-shaped air outlet extending along the vertical direction is formed in one side surface of the air outlet duct; and
and the jet flow fan is arranged below the air outlet duct and is communicated with the air outlet duct in a fluid manner so as to controllably drive the airflow outside the jet flow device to flow into the air outlet duct, and the airflow flowing into the air outlet duct flows out of the air outlet after being guided by the guide cavity and is mixed with the heat exchange airflow flowing out of the heat exchange airflow outlet.
2. The fluidic device of claim 1,
the air outlet is positioned on the front side of the air outlet duct;
two arc-shaped guide plates which extend vertically are symmetrically arranged inside the air outlet duct, and the two arc-shaped guide plates are convexly bent from back to front towards the direction close to each other, so that the front part of the air outlet, which is close to the guide cavity, forms a gradually-reduced arc-shaped closing part.
3. The fluidic device of claim 2,
the arc-shaped closing-in part extends forwards to the air outlet, and the size of the foremost end of the arc-shaped closing-in part in the transverse direction is consistent with the size of the air outlet in the transverse direction.
4. The fluidic device of claim 3,
the cross section of the flow guide cavity is in a tapered shape in the direction from back to front; and is
The width of the rearmost end of the diversion cavity in the transverse direction is 5-10 times of the width of the air outlet in the transverse direction.
5. The fluidic device of claim 2,
the cross section of the flow guide cavity is in a tapered shape in the direction from back to front; and is
The ratio of the width of the rearmost end of the flow guide cavity in the transverse direction to the depth of the flow guide cavity in the front-back direction is any ratio within the range of 2: 11-2: 9.
6. The fluidic device of claim 2,
the ratio of the length of the arc-shaped guide plate in the front-back direction to the depth of the guide cavity in the front-back direction is any ratio in the range of 4: 11-7: 11.
7. The fluidic device of claim 2,
the cross section of the air outlet duct is trapezoidal, the upper bottom of the trapezoid is positioned on the front side where the air outlet is positioned, and the lower bottom of the trapezoid is positioned on the rear side away from the air outlet;
the rear ends of the two arc-shaped guide plates are bent forwards and extend from the air outlet duct corresponding to the two side plates of the two trapezoidal waists respectively.
8. The fluidic device of claim 2,
a plurality of flow deflectors which extend in the front-back direction and are positioned on the inner side of the air outlet are arranged in the flow guide cavity, and the flow deflectors are arranged at intervals in the vertical direction; and is
The length of the flow deflector in the front-back direction is less than or equal to the length of the arc-shaped flow deflector in the front-back direction, so that the flow deflector is positioned in the arc-shaped closing part.
9. The fluidic device of claim 1,
a plurality of flow deflectors which extend in the front-back direction and are positioned on the inner side of the air outlet are arranged in the flow guide cavity, and the flow deflectors are arranged at intervals in the vertical direction; and is
The air outlet is located the front side in air-out wind channel, the water conservancy diversion piece includes from down supreme by the arc section of backward forward bending extension and by the end of arc section extends forward to the straight section of air outlet.
10. The fluidic device of claim 9,
the length of the arc-shaped section in the front-rear direction is greater than or equal to the length of the straight section in the front-rear direction.
11. The fluidic device of claim 9,
the lengths of the straight sections of the guide vanes in the front and rear directions are equal; and is
The lengths of the arc-shaped sections of the guide vanes in the front and rear directions are equal; or the lengths of the arc-shaped sections of the guide vanes which are sequentially arranged from bottom to top in the front-back direction are sequentially increased, and the rear end parts of the guide vanes are positioned on an inclined straight line.
12. The fluidic device of claim 1,
the bottom of the air outlet duct is in fluid communication with the top of the jet fan through a volute duct;
the jet fan is a centrifugal fan or an axial flow fan.
13. A cabinet air-conditioning indoor unit, comprising:
the shell is provided with a heat exchange airflow outlet used for conveying heat exchange airflow to the indoor space; and
a fluidic device according to any one of claims 1 to 12, adapted to controllably cause a flow of gas from outside the fluidic device to flow into the fluidic device and out through the outlet port of the fluidic device, and to mix the flow of gas out through the outlet port with a flow of heat-exchange gas out through the heat-exchange gas outlet.
CN202010751713.7A 2020-07-30 2020-07-30 Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit Pending CN114060914A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010751713.7A CN114060914A (en) 2020-07-30 2020-07-30 Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit
PCT/CN2021/090685 WO2021223648A1 (en) 2020-07-30 2021-04-28 Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010751713.7A CN114060914A (en) 2020-07-30 2020-07-30 Jet device for cabinet air conditioner indoor unit and cabinet air conditioner indoor unit

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Publication Number Publication Date
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WO (1) WO2021223648A1 (en)

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DE50011597D1 (en) * 1999-03-11 2005-12-22 Adam Bernhardt Method for tempering a hall and device for carrying out the method
KR101115580B1 (en) * 2009-07-06 2012-03-05 주식회사 코벡엔지니어링 Heat pump air handling unit with jet fan
CN103940064B (en) * 2013-01-18 2019-03-26 珠海格力电器股份有限公司 A kind of air-conditioned wind tunnel structure, floor air conditioner and the method for increasing air-conditioning intake
CN105698261B (en) * 2014-11-28 2019-06-07 青岛海高设计制造有限公司 Cabinet air-conditioner
CN206281148U (en) * 2016-12-16 2017-06-27 上海野马环保设备工程有限公司 A kind of novel air air curtain
CN207962850U (en) * 2017-12-26 2018-10-12 东莞市卓为空调机电设备有限公司 A kind of double through-flow jet stream air-conditioning
CN110906445A (en) * 2018-09-13 2020-03-24 青岛海尔空调器有限总公司 Cabinet air conditioner and control method thereof

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