CN213931181U - Air pipe type air conditioner indoor unit - Google Patents
Air pipe type air conditioner indoor unit Download PDFInfo
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- CN213931181U CN213931181U CN202022937429.7U CN202022937429U CN213931181U CN 213931181 U CN213931181 U CN 213931181U CN 202022937429 U CN202022937429 U CN 202022937429U CN 213931181 U CN213931181 U CN 213931181U
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- line segment
- molded line
- indoor unit
- volute
- air conditioner
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Abstract
The utility model discloses an air duct type air conditioner indoor unit, be equipped with heat exchanger and centrifugal fan in the casing, centrifugal fan includes the spiral case and locates the impeller in the spiral case, the molded lines of spiral case are including the first molded lines section that connects gradually, second molded lines section, third molded lines section and fourth molded lines section, second molded lines section constitutes the spiral tongue of spiral case, third molded lines section constitutes the main part of spiral case, first molded lines section and fourth molded lines section constitute the air outlet of spiral case, first molded lines section is the curve, and the one end that second molded lines section was kept away from to the direction slope of keeping away from fourth molded lines section to first molded lines section, with the effectual below region with the air current direction heat exchanger, and then improve the air supply homogeneity, improve the heat transfer homogeneity of heat exchanger, improve the system energy consumption of air duct type air conditioner indoor unit.
Description
Technical Field
The utility model relates to an air conditioner technical field especially relates to an interior machine of tuber pipe formula air conditioning.
Background
The air duct type air conditioner indoor unit is developed by applying the diversity requirement of the market and the change of the whole decoration space, and is used more and more in common families due to smaller installation and maintenance width. One pain point of the existing air duct type air conditioner indoor unit in use is the problem of high energy consumption. The air pipe type air conditioner indoor unit generally comprises a centrifugal fan, a volute, a heat exchanger and the like, air enters the centrifugal fan from an air inlet of the indoor unit in the air supply process, air flow is pushed out at a high speed by the centrifugal fan acting, and the high-speed air flow is subjected to heat exchange with the heat exchanger and then blown out from an air outlet of the indoor unit. An air outlet of an existing volute is connected with a volute tongue and is provided with an inclined plate, the inclined plate extends downwards, airflow is directly blown to a heat exchanger under the guiding action of the inclined plate after coming out of the volute, excessive airflow does not contact the heat exchanger at the area part below the heat exchanger, air supply is uneven, and accordingly heat exchange on the surfaces of the heat exchanger is uneven.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
To the problem pointed out in the background art, the utility model provides an air duct type air conditioner indoor unit.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
the utility model provides an interior machine of tuber pipe formula air conditioning, include:
the air conditioner comprises a shell, a fan body and a fan, wherein an installation cavity is formed in the shell, and an air inlet and an air outlet are formed in the shell;
the heat exchanger is arranged in the mounting cavity;
the centrifugal fan is arranged in the mounting cavity and comprises a volute and an impeller arranged in the volute;
the molded line of the volute comprises a first molded line segment, a second molded line segment, a third molded line segment and a fourth molded line segment which are sequentially connected, the second molded line segment forms a volute tongue of the volute, the third molded line segment forms a main body of the volute, the first molded line segment and the fourth molded line segment form an air outlet of the volute, the first molded line segment is a curve, and one end, far away from the second molded line segment, of the first molded line segment inclines towards the direction far away from the fourth molded line segment.
In some embodiments of the present application, the curvature of the first profile line segment gradually decreases along the outlet direction of the volute.
In some embodiments of the present application, along the axial direction of the impeller, a curve of the volute outlet formed by the first profile segment gradually decreases from two ends to the middle.
In some embodiments of the present application, the first type line segment is a circular arc curve or an elliptical curve or a quadratic curve or a spline curve.
In some embodiments of the present application, a length of a straight line between a start point and an end point of the first type line segment is 0.5 to 1.5 times a radius of the impeller.
In some embodiments of the present application, the curvatures of the first profile segment and the second profile segment are continuous.
In some embodiments of the present application, the fourth profile segment includes a first fourth profile segment portion and a second fourth profile segment portion, the first fourth profile segment portion is connected to the third profile segment, and an end of the second fourth profile segment portion, which is far away from the first fourth profile segment portion, is inclined toward a direction far away from the first profile segment.
In some embodiments of the present application, the second section of the fourth type line segment is a straight line.
In some embodiments of the present application, a portion of the fourth mold line segment is continuous with the curve of the third mold line segment.
In some embodiments of the present application, the third type of line segment is a logarithmic spiral or an archimedean spiral or an involute, and the curve of the third type of line segment is continuous with the curve of the second type of line segment.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
in the disclosed air duct type air conditioner indoor unit of this application, optimize the improvement to the spiral case structure, the key is set up the first molded lines section that spiral case air outlet department and snail tongue are connected into the curve, and the crooked direction of first molded lines section is regional for the below towards the heat exchanger, can effectually lead the below region of heat exchanger with the air current, and then improves the air supply homogeneity, improves the heat transfer homogeneity of heat exchanger, improves the system energy consumption of air duct type air conditioner indoor unit.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of an air duct type air conditioner indoor unit according to an embodiment;
FIG. 2 is a schematic view of the structure shown in FIG. 1 without side plates;
FIG. 3 is a first diagram illustrating a configuration of a volute according to an embodiment;
fig. 4 is a schematic structural diagram of a volute according to the embodiment.
Reference numerals:
10-a centrifugal fan, 11-a volute, 12-an impeller, 13-a volute air inlet and 14-a volute air outlet;
20-machine shell, 21-air outlet;
30-heat exchanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2, the air duct type indoor unit of an air conditioner in the present embodiment includes a casing 20, an installation cavity is formed in the casing 20, an air inlet (not shown) and an air outlet 21 are formed in the casing 20, and a heat exchanger 30 and a centrifugal fan 10 are disposed in the installation cavity.
The gas enters the centrifugal fan 10 through the air inlet, the centrifugal fan 10 applies work to blow the gas onto the heat exchanger 30 for heat exchange, and the gas after heat exchange flows out through the air outlet 21.
The centrifugal fan 10 includes a volute 11, and an impeller 12 is provided in the volute 11.
Referring to fig. 3, the volute 11 includes a first profile segment AB, a second profile segment BC, a third profile segment CD, and a fourth profile segment DF, which are connected in sequence. The second profile segment BC constitutes a volute tongue of the volute 11, the third profile segment CD constitutes a main body of the volute 11, and the first profile segment AB and the fourth profile segment DF constitute an air outlet 14 of the volute.
In this embodiment, the first type segment AB is a curve, and one end a of the first type segment AB away from the second type segment BC inclines in a direction away from the fourth type segment DF.
The bending direction of the first section line AB is towards the lower area of the heat exchanger 30, so that air flow can be effectively guided to the lower area of the heat exchanger 30, air supply uniformity is improved, heat exchange uniformity of the heat exchanger 30 is improved, and system energy consumption of the air pipe type air conditioner indoor unit is improved.
In some embodiments of the present application, the first type segment AB may be an arc curve or an elliptic curve or a quadratic curve or a spline curve.
In some embodiments of the present application, referring to fig. 3, the curvature of the first profile segment AB decreases gradually along the outlet opening 14 of the volute. Since the volute is more open in the area of the outlet 14, if the curvature is too variable, the air flow there is projected into the open area without good guidance. The reason that the curvature of the area close to the volute tongue is larger is that the airflow space at the position is smaller, and the length of the first type line segment AB is longer, so that the airflow in a limited area can be effectively guided, and the guiding efficiency is improved.
In practical use, it is found that the portion of the volute air outlet 14 facing the heat exchanger obtains more air flow than the portions of the volute air outlet 14 facing the heat exchanger, which results in uneven air supply of the whole heat exchanger, so in some embodiments of the present application, referring to fig. 4, along the axial direction of the impeller 12, the curve of the volute air outlet 14 formed by the first profile line segment AB gradually decreases from two ends to the middle, which can increase the degree of guiding the air flow at the air inlets 13 on two sides of the volute to the lower area of the heat exchanger 30, and increase the air supply uniformity of the whole heat exchanger 30.
In some embodiments of the present application, the length of the straight line between the starting point and the end point of the first profile line AB is 0.5 to 1.5 times, preferably 1 time, the radius of the impeller 12, and the first profile line is longer, which helps to improve the efficiency of guiding the airflow.
In some embodiments of the present application, the curvatures of the first profile segment AB and the second profile segment BC are continuous, that is, the first profile segment AB and the second profile segment BC are smoothly connected, and the curvatures at the connection point B are equal and the directions are the same, so as to avoid increasing the energy consumption of the system due to the increase of the turbulent kinetic energy of the air flow caused by the excessive change of the air flow velocity gradient.
In some embodiments of the present application, the fourth profile DF includes a first portion DE and a second portion EF, the first portion DE is connected to the third profile CD, and an end F of the second portion EF, which is far away from the first portion DE, is inclined toward a direction far away from the first profile AB, so as to effectively guide the air flow to an upper region of the heat exchanger, thereby improving the overall blowing uniformity of the heat exchanger.
The second EF of the fourth line segment is a straight line, so that the guiding efficiency of the airflow is improved.
In some embodiments of the present application, the curves of the second profile segment BC and the third profile segment CD are continuous, and the curves of the third profile segment CD and the first profile segment DE are also continuous, that is, the first profile segment AB and the second profile segment BC are fairing-connected, the curvatures at the connection point B are equal and the directions are the same, the second profile segment BC and the third profile segment CD are fairing-connected, the curves at the connection point C are equal and the directions are the same, the third profile segment CD and the first profile segment DE are fairing-connected, and the curvatures at the connection point D are equal and the directions are the same. The volute 11 in this embodiment has less flow separation and impact loss at the volute tongue when the air volume and the air pressure are increased, and can reduce noise.
In some embodiments of the present application, the third type of segment CD is a logarithmic spiral or an archimedes spiral or an involute, preferably a logarithmic spiral, which results in a higher aerodynamic efficiency of the centrifugal fan 10.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An air duct type air conditioning indoor unit comprising:
the air conditioner comprises a shell, a fan body and a fan, wherein an installation cavity is formed in the shell, and an air inlet and an air outlet are formed in the shell;
the heat exchanger is arranged in the mounting cavity;
the centrifugal fan is arranged in the mounting cavity and comprises a volute and an impeller arranged in the volute;
the method is characterized in that:
the molded line of the volute comprises a first molded line segment, a second molded line segment, a third molded line segment and a fourth molded line segment which are sequentially connected, the second molded line segment forms a volute tongue of the volute, the third molded line segment forms a main body of the volute, the first molded line segment and the fourth molded line segment form an air outlet of the volute, the first molded line segment is a curve, and one end, far away from the second molded line segment, of the first molded line segment inclines towards the direction far away from the fourth molded line segment.
2. The indoor unit of an air duct type air conditioner according to claim 1,
the curvature of the first profile line segment gradually decreases along the direction of the air outlet of the volute.
3. The indoor unit of an air duct type air conditioner according to claim 2,
and along the axial direction of the impeller, the curve of the volute air outlet formed by the first molded line segment is gradually reduced from two ends to the middle.
4. The indoor unit of an air duct type air conditioner according to claim 1,
the first type line segment is an arc curve or an ellipse curve or a quadratic curve or a spline curve.
5. The indoor unit of an air duct type air conditioner according to claim 1,
the length of a straight line between the starting point and the end point of the first type line segment is 0.5-1.5 times of the radius of the impeller.
6. The indoor unit of an air duct type air conditioner according to claim 1,
the curvatures of the first type line segment and the second type line segment are continuous.
7. The indoor unit of an air duct type air conditioner according to claim 1,
the fourth molded line segment comprises a first fourth molded line segment part and a second fourth molded line segment part which are connected, the first fourth molded line segment part is connected with the third molded line segment, and one end, far away from the first fourth molded line segment part, of the second fourth molded line segment part inclines towards the direction far away from the first molded line segment.
8. The indoor unit of an air duct type air conditioner according to claim 7,
the second part of the fourth type line segment is a straight line.
9. The indoor unit of an air duct type air conditioner according to claim 7,
and one part of the fourth line segment is continuous with the curve of the third line segment.
10. The indoor unit of an air duct type air conditioner according to claim 1,
the third type line segment is a logarithmic spiral or an Archimedes spiral or an involute, and the curve of the third type line segment is continuous with that of the second type line segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022937429.7U CN213931181U (en) | 2020-12-10 | 2020-12-10 | Air pipe type air conditioner indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022937429.7U CN213931181U (en) | 2020-12-10 | 2020-12-10 | Air pipe type air conditioner indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213931181U true CN213931181U (en) | 2021-08-10 |
Family
ID=77149783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022937429.7U Active CN213931181U (en) | 2020-12-10 | 2020-12-10 | Air pipe type air conditioner indoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213931181U (en) |
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2020
- 2020-12-10 CN CN202022937429.7U patent/CN213931181U/en active Active
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