CN113439187B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN113439187B CN113439187B CN202080014923.6A CN202080014923A CN113439187B CN 113439187 B CN113439187 B CN 113439187B CN 202080014923 A CN202080014923 A CN 202080014923A CN 113439187 B CN113439187 B CN 113439187B
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- China
- Prior art keywords
- rear guide
- heat exchanger
- flange portion
- guide flange
- air
- Prior art date
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F1/0025—Cross-flow or tangential fans
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
The air conditioner of the invention is provided with a stabilizer and a rear guide which are respectively arranged on the front side and the back side of the periphery of a cross flow fan (103) to form a 1 st air path. The rear guide has a rear guide flange portion (106 a) disposed between the rear heat exchanger (104 b) and the cross-flow fan (103), and the 2 nd air passage (109) is configured by the 1 st surface (110 a) of the rear guide flange portion (106 a) and the rear heat exchanger (104 b). The 2 nd air passage is configured such that the distance between the 1 st surface (110 a) of the closest portion of the 1 st surface (110 a) and the rear surface heat exchanger (104 b) is equal to or shorter than the distance between the 1 st surface (110 a) and the rear surface heat exchanger (104 b) of the 2 nd air passage (109) which is located above the closest portion.
Description
Technical Field
The present invention relates to an air conditioner including a main body having an air inlet and an air outlet, a heat exchanger, a cross flow fan, a rear guide, and a stabilizer arranged to face the rear guide.
Background
Generally, in an indoor unit of an air conditioner, an air blowing circuit through which air flows is formed in a main body casing having an air inlet and an air outlet. A cross-flow fan is provided in the air supply circuit, and a heat exchanger is disposed in the vicinity of the upstream of the cross-flow fan. The air sucked from the suction port by the rotation of the cross flow fan is heat-exchanged in the heat exchanger, and then blown out from the discharge port. Further, the indoor unit is provided with a rear guide and a stabilizer in order to form a flow of air generated by the rotation of the cross flow fan.
Here, an air conditioner disclosed in patent document 1 will be described as an example of a conventional indoor unit with reference to fig. 10. The air conditioner 1 includes an air inlet 2 disposed on the upper surface of the main body and an air outlet 3 disposed on the front surface of the main body. A cross flow fan 4 is disposed in the center of the main body. A rear guide 5 is disposed behind the cross flow fan 4, and a stabilizer 6 is disposed to face the rear guide 5. The heat exchanger 7 is disposed so as to sandwich the rear guide 5, the stabilizer 6, and the cross flow fan 4 from the front to the rear. The heat exchanger 7 includes a front heat exchanger 7a and a rear heat exchanger 7b. The rear guide 5 has a rear guide flange portion 9. The rear guide flange 9 rectifies the air upward of the drain pan 8 and causes the air to flow into the cross flow fan 4. The rear guide flange portion 9 has the same thickness.
In the air conditioner 1 configured as described above, when the cross flow fan 4 rotates, the air flowing in from the intake port 2 in the upper surface of the main body passes through the front heat exchanger 7a and the rear heat exchanger 7b. The air after heat exchange is blown out from the air outlet 3 by the cross flow fan 4. At this time, the air passing through the lower portion of the rear heat exchanger 7b below the rear guide portion front end 9a in the rear heat exchanger 7b flows upward along the rear guide flange portion facing surface 9b facing the rear heat exchanger 7b. Then, the air merges with the air passing through the upper portion of the rear heat exchanger 7b above the rear guide portion front end 9a in the rear heat exchanger 7b at the rear guide flange portion front end 9a, and flows toward the cross flow fan 4.
However, since the rear guide flange portion is shaped to rectify the airflow on the cross-flow fan side, the airflow on the rear guide flange portion facing surface side facing the rear heat exchanger of the rear guide flange portion is not considered. Therefore, when the air having passed through the rear heat exchanger passes through the flange-back-side air passage formed by the rear heat exchanger and the rear guide flange portion-facing surface, the air velocity may increase or the air may be disturbed. This may cause deterioration in air blowing performance. Therefore, there is room for further improvement in the shape of the rear guide.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2015-55419
Disclosure of Invention
The inventors have found that, for example, when a flow constriction portion having a locally narrowed flow passage width is present in the flange-back-side flow passage, an increase in the wind speed in the flow constriction portion, an impact of the air flow on the surface of the flow constriction portion, or a confluence of the air flows in different directions occurs, and thus there is a possibility that the ventilation resistance increases and the air blowing performance deteriorates. The invention provides an air conditioner which can restrain the increase of wind speed and the disturbance of air flow caused by the opposite surface of the flange part of a rear guide when the air passing through a back heat exchanger flows in a flange back-side air path.
The air conditioner of the present invention includes: a main body having an air suction port and an air discharge port; a front heat exchanger disposed inside the main body on a front side of the main body; a back heat exchanger disposed on the back side of the interior of the main body; a cross-flow fan disposed inside the main body and having a rotation axis parallel to the left-right direction of the main body; and a stabilizer and a rear guide which are respectively arranged on the front side and the back side of the outer periphery of the cross flow fan to form a 1 st air passage. The rear guide has a rear guide flange portion disposed between the rear heat exchanger and the cross-flow fan. The rear guide flange portion has a 1 st surface facing the rear heat exchanger, and the 1 st surface of the rear heat exchanger and the rear guide flange portion constitutes a 2 nd air passage, and the 2 nd air passage is configured such that, in an arbitrary cross section perpendicular to a rotation axis of the cross flow fan, a distance between the 1 st surface of a closest portion of the 1 st surface and the rear heat exchanger, which is closest to the rear heat exchanger, and the rear heat exchanger is equal to or shorter than a distance between the 1 st surface of an upper portion of the 2 nd air passage than the closest portion and the rear heat exchanger.
With this configuration, the flow constriction is removed in the flange-back-side air passage, and turbulence in the air flow can be reduced. Further, the 2 nd air passage is gradually enlarged toward the downstream side, and thus an increase in the speed of the airflow flowing through the 2 nd air passage can be suppressed.
Drawings
Fig. 1 is a sectional view showing an example of the structure of an air conditioner according to embodiment 1 of the present invention.
Fig. 2 is an enlarged cross-sectional view of the periphery of the rear guide flange portion 106a of the air conditioner according to embodiment 1.
Fig. 3 is a perspective view showing an example of the structure of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 2 of the present invention.
Fig. 4 is an enlarged cross-sectional view of a portion of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 2.
Fig. 5 is a perspective view showing an example of the configuration of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 3 of the present invention.
Fig. 6 is an enlarged cross-sectional view of a portion of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 3.
Fig. 7 is a perspective view showing an example of the structure of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 4 of the present invention.
Fig. 8 is a perspective view showing an example of the structure of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 5 of the present invention.
Fig. 9 is a perspective view showing an example of the configuration of the 1 st surface 110a of the rear guide flange portion 106a according to embodiment 6 of the present invention.
Fig. 10 is a sectional view showing the air conditioner of patent document 1.
Detailed Description
An air conditioner according to an aspect of the present invention includes: a main body having an air suction port and an air discharge port; a front heat exchanger disposed inside the main body on a front side of the main body; a rear heat exchanger disposed on a rear surface side of the main body inside the main body; a cross-flow fan disposed inside the main body and having a rotation axis parallel to the left-right direction of the main body; and a stabilizer and a rear guide which are respectively arranged on the front side and the back side of the outer periphery of the cross flow fan to form a 1 st air passage. The rear guide has a rear guide flange portion disposed between the rear heat exchanger and the cross-flow fan. The rear guide flange portion has a 1 st surface facing the rear heat exchanger, and the 1 st surface of the rear heat exchanger and the rear guide flange portion constitute a 2 nd air passage, and the 2 nd air passage is configured such that, in a cross section perpendicular to a rotation axis of the cross-flow fan, a distance between the 1 st surface of a closest portion of the 1 st surface and the rear heat exchanger, which is closest to the rear heat exchanger, and the rear heat exchanger is equal to or shorter than a distance between the 1 st surface of an upper portion of the closest portion of the 2 nd air passage and the rear heat exchanger.
With this configuration, the constriction portion having a locally narrowed flow path width is removed in the 2 nd flow path, and turbulence of the air flow can be reduced. Further, the airflow flowing toward the front end of the rear guide flange portion is rectified, thereby improving the air blowing performance. Further, the 2 nd duct is gradually enlarged toward the downstream side, so that an increase in the speed of the air flowing in the 2 nd duct can be suppressed, the ventilation resistance in the 2 nd duct can be reduced, and the air blowing performance can be improved.
In the 2 nd air passage, in a cross section perpendicular to the rotation axis of the cross flow fan, the distance between the 1 st surface of the rear guide flange portion and the rear surface heat exchanger may be the same or gradually smaller from the front end of the rear guide flange portion to the closest portion.
With this configuration, the 2 nd air passage is gradually enlarged toward the downstream side, and the airflow flowing toward the front end of the rear guide flange portion is rectified, thereby improving the 2 nd air blowing performance.
In a cross section perpendicular to a rotation axis of the cross flow fan, the 2 nd air passage is configured such that, when a distance between a point A on the 1 st surface closest to the projecting end and the rear heat exchanger is LA, a distance between an arbitrary point B on the 1 st surface above the point A and below a front end of the rear guide flange portion and the rear heat exchanger is LB, and a distance between an arbitrary point C on the 1 st surface above the point B and below the front end of the rear guide flange portion and the rear heat exchanger is LC, LC is equal to or greater than LB ≧ LA.
With this configuration, the flow constriction is removed in the 2 nd air passage, and turbulence of the air flow can be reduced. Further, the airflow flowing toward the front end of the rear guide flange portion is rectified, thereby improving the air blowing performance. In addition, the flange-back-side air passage is gradually enlarged, so that an increase in the speed of the airflow flowing through the 2 nd air passage can be suppressed, the ventilation resistance in the 2 nd air passage can be reduced, and the air blowing performance can be improved.
In addition, the air conditioner may further include a water receiving tray disposed so as to be connected to the rear guide flange portion, and the 2 nd air passage may be configured such that, when a distance between an intersection point D of the rear guide flange portion and the water receiving tray and the rear heat exchanger is LD, and a distance between an arbitrary point E above the point D and below the point LA on the 1 st surface and the rear heat exchanger is LE, LA is not less than LE ≧ LD.
With this configuration, the flow constriction is removed in the 2 nd air passage, and turbulence of the air flow can be reduced. Further, the airflow flowing toward the front end of the rear guide flange portion is rectified, thereby improving the air blowing performance. Further, the 2 nd duct is gradually enlarged, so that an increase in the speed of the airflow flowing through the 2 nd duct can be suppressed, the ventilation resistance in the 2 nd duct can be reduced, and the air blowing performance can be improved. Further, an increase in the wind speed and turbulence of the air flow in the 2 nd air passage at a narrower portion can be suppressed, and the air blowing performance can be further improved.
The 1 st surface of the rear guide flange portion may have a planar shape. The planar shape also includes a substantially planar shape.
With this configuration, the 2 nd flow path has a simple configuration, and the flow contracting portion can be easily removed. This can reduce disturbance of the airflow.
One or more convex portions may be disposed on the 1 st surface of the rear guide flange portion.
According to such a structure, the frictional resistance around the convex portion can be reduced by generating the turbulent flow region around the convex portion. Therefore, the ventilation resistance in the 2 nd air passage can be reduced, and the air blowing performance can be improved.
One or a plurality of concave portions may be arranged in the lateral direction of the first surface 1 of the rear guide flange portion.
According to such a configuration, the frictional resistance around the recess can be reduced by generating the turbulent flow region around the recess. Therefore, the ventilation resistance in the 2 nd air passage can be reduced, and the air blowing performance can be improved.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below are examples, and the present invention is not limited to the embodiments.
(embodiment mode 1)
Fig. 1 is a sectional view showing an example of the structure of an air conditioner 100 according to the present embodiment, and fig. 2 is an enlarged sectional view of the periphery of a rear guide flange portion 106a of the air conditioner 100. Fig. 1 and 2 are sectional views of the air conditioner 100 as viewed from the right side.
The air conditioner 100 has a main body 100A as shown in fig. 1. A heat exchanger 104 and a cross flow fan 103 are disposed inside the main body 100A. An air inlet 101 is disposed on the upper surface of the main body 100A, and an air outlet 102 is disposed on the front surface of the main body 100A. Heat exchanger 104 exchanges heat with air taken in from intake port 101. The rotation axis of the cross flow fan 103 is disposed in the left-right direction of the main body 100A. Cross-flow fan 103 generates an airflow that is blown out from outlet 102 by heat exchange in heat exchanger 104.
A rear guide 106 for guiding the flow of air to the air outlet 102 is disposed downstream of the cross flow fan 103. A stabilizer 105 is disposed so as to oppose the rear guide 106. The rear guide 106 and the stabilizer 105 constitute a ventilation passage 102a (1 st air passage). The heat exchanger 104 is disposed so as to sandwich the stabilizer 105, the rear guide 106, and the cross-flow fan 103 from front to rear. The heat exchanger 104 is composed of a front-side heat exchanger 104a and a rear-side heat exchanger 104 b. The front heat exchanger 104a is disposed on the front side of the main body 100A in the main body 100A, and the rear heat exchanger 104b is disposed on the rear side of the main body 100A in the main body 100A.
A rear guide flange portion 106a for rectifying the air flowing into the cross flow fan 103 is formed at the upper end portion of the rear guide 106.
The drain pan 107 is disposed so as to be connected to the rear guide flange portion 106a. The rear guide flange 106a is disposed above the drain pan 107.
As shown in fig. 2, the rear guide flange portion 106a is disposed so as to be sandwiched between the rear heat exchanger 104b and the cross-flow fan 103. A protruding end 108 is formed on the rear guide flange portion 106a. The protruding end 108 is disposed on the 2 nd surface 110b facing the cross flow fan on the rear surface side of the 1 st surface. The distance between rear guide flange portion 106a and cross flow fan 103 is the shortest at projecting end portion 108. The protruding end 108 rectifies the airflow flowing through the 1 st air passage. The lower end of the rear heat exchanger 104b is disposed below the protruding end 108. The rear guide flange 106a is a surface facing the rear heat exchanger 104b, and has a rear guide flange facing surface (1 st surface) 110a. In the present embodiment, the 1 st surface 110a of the rear guide flange portion 106a has a substantially planar shape. However, the 1 st surface 110a may have a spherical concave shape or a spherical convex shape.
The 1 st surface 110a of the rear guide flange portion 106a and the rear heat exchanger 104b form a flange back-side air passage (2 nd air passage) 109. The air that has passed through the portion of the rear heat exchanger 104b below the rear guide flange front end 106b flows upward from below in the flange-back air passage 109. The air having passed through the flange back-side air passage 109 and the air having passed through the portion of the rear heat exchanger 104b above the rear guide flange portion front end 106b join at the rear guide flange portion front end 106b and flow to the cross flow fan 103.
In the flange back-side air passage 109, the portion where the distance between the 1 st surface 110a of the rear guide flange portion 106a and the back heat exchanger 104b is the shortest is the closest portion between the 1 st surface 110a and the back heat exchanger 104 b. In the example shown in fig. 2, the periphery of the lower end portion of the flange back-side air passage 109 is the closest portion. Specifically, in the portion of the point D, the distance between the 1 st surface 110a and the rear surface heat exchanger 104b becomes the shortest.
The distance between the 1 st surface 110a of the closest portion and the rear heat exchanger 104b is equal to or shorter than the distance between the 1 st surface 110a of the flange back-side air passage 109, which is located above the closest portion, and the rear heat exchanger 104 b.
As shown in fig. 2, the flange back-side air passage 109 is configured such that the width thereof gradually decreases as the air passes from the rear guide flange front end 106b to the nearest portion. A step or the like may be provided on the 1 st surface 110a of the rear guide flange portion 106a.
Let LA be the distance between the point a on the 1 st surface 110a of the rear guide flange portion 106a closest to the protruding end portion 108 and the rear heat exchanger 104B, LB be the distance between any point B on the 1 st surface 110a of the rear guide flange portion 106a above the point a and below the rear guide flange portion front end 106B and the rear heat exchanger 104B, and LC be the distance between any point C on the 1 st surface 110a of the rear guide flange portion 106a above the point B and below the rear guide flange portion front end 106B and the rear heat exchanger 104B. A distance LD between an intersection D of the rear guide flange portion 106a and the drain pan 107 and the rear heat exchanger 104b is set as a distance LE between an arbitrary point E above the point D and below the point a on the 1 st surface 110a of the rear guide flange portion 106a and the rear heat exchanger 104 b.
In this case, flange back-side air passage 109 is configured such that LC ≧ LB ≧ LA ≧ LE ≧ LD.
That is, the flange back-side air passage 109 is configured to have LC ≧ LB ≧ LA. Moreover, flange back-side air passage 109 is configured such that LA ≧ LE ≧ LD.
Thus, the constricted flow path having a locally narrowed flow path width is eliminated in the flange back-side air path 109, and turbulence in the air flow flowing through the flange back-side air path 109 can be reduced. Further, the flange back-side air passage 109 is gradually enlarged, and thus an increase in the speed of the airflow flowing through the flange back-side air passage 109 can be suppressed.
In addition, in the flange back-side air passage 109, the air flow flowing toward the rear guide flange portion front end 106b is rectified, and therefore the air blowing performance is improved. In addition, since an increase in the speed of the air flowing through the flange back-side air passage 109 can be suppressed, the ventilation resistance in the flange back-side air passage 109 can be reduced, and the air blowing performance can be improved.
(embodiment mode 2)
Fig. 3 is a perspective view showing an example of the structure of the 1 st surface 110a of the rear guide flange portion 106a according to the present embodiment. Fig. 4 is an enlarged cross-sectional view of a portion of the 1 st surface 110a of the rear guide flange portion 106a shown in fig. 3. In fig. 3 and 4, the same elements as those in embodiment 1 are denoted by the same reference numerals.
As shown in fig. 3, a plurality of projections 111 are provided on the surface of the 1 st surface 110a of the rear guide flange portion 106a.
As shown in fig. 4, a small turbulent vortex is generated behind the convex portion 111. This can suppress separation of the airflow flowing through the flange back-side air passage 109 (see fig. 2) from the surface of the 1 st surface 110a of the rear guide flange portion 106a. Further, the frictional resistance of the surface of the 1 st surface 110a of the rear guide flange portion 106a is reduced, and the ventilation resistance in the flange back-side air passage 109 can be reduced. Therefore, the air blowing performance is improved.
In the present embodiment, the convex portion 111 has a dome shape. However, the shape of the convex portion 111 may be conical, triangular pyramidal, rectangular, or the like. In the present embodiment, the convex portions 111 are arranged side by side, but may be arranged in a zigzag shape or randomly, or may be arranged in another arrangement.
(embodiment mode 3)
Fig. 5 is a perspective view showing an example of the structure of the 1 st surface 110a of the rear guide flange portion 106a according to the present embodiment. Fig. 6 is an enlarged cross-sectional view of a portion of the 1 st surface 110a of the rear guide flange portion 106a shown in fig. 5. In fig. 5 and 6, the same elements as those in embodiment 1 are denoted by the same reference numerals.
As shown in fig. 5, a plurality of recesses 112 are provided on the surface of the 1 st surface 110a of the rear guide flange portion 106a.
As shown in fig. 6, a small turbulent vortex is generated behind the concave portion 112. This can suppress separation of the airflow flowing through the flange back-side air passage 109 (see fig. 2) from the surface of the 1 st surface 110a of the rear guide flange portion 106a. Further, the frictional resistance of the surface of the 1 st surface 110a of the rear guide flange portion 106a is reduced, and the ventilation resistance in the flange back-side air passage 109 can be reduced. Therefore, the air blowing performance is improved.
In the present embodiment, the shape of the concave portion 112 is substantially spherical. However, the shape of the concave portion 112 may be conical, triangular pyramidal, rectangular, or the like. In the present embodiment, the concave portions 112 are arranged side by side, but may be arranged in a zigzag or random manner, or may be arranged in another manner.
(embodiment 4)
Fig. 7 is a perspective view showing an example of the structure of the 1 st surface 110a of the rear guide flange portion 106a according to the present embodiment. In fig. 7, the same reference numerals are given to the same elements as those in embodiment 1.
As shown in fig. 7, a plurality of slits (grooves) 113 are provided as another form of the recess 112 on the surface of the 1 st surface 110a of the rear guide flange portion 106a. In the present embodiment, the slit 113 extends in a direction (left-right direction) parallel to the rotation axis of the cross flow fan 103 (see fig. 2).
Thus, when the rear guide flange portion 106a is produced by resin molding, a shape failure in resin molding such as a shrinkage cavity can be prevented.
(embodiment 5)
Fig. 8 is a perspective view showing an example of the configuration of the 1 st surface 110a of the rear guide flange portion 106a according to the present embodiment. In fig. 8, the same reference numerals are given to the same elements as those in embodiment 1.
As shown in fig. 8, the surface of the 1 st surface 110a of the rear guide flange portion 106a is provided with a plurality of slits (grooves) 113 extending in a direction perpendicular to the rotation axis of the cross flow fan 103 (see fig. 2) as another form of the recess 112.
Thus, when the rear guide flange portion 106a is produced by resin molding, a shape failure in resin molding such as a shrinkage cavity can be prevented.
In addition, the slit 113 of the present embodiment has a short length. Specifically, the slit 113 of the present embodiment is shorter than the slit 113 shown in fig. 7. Therefore, workability such as cutting at the time of manufacturing the mold for the rear guide is improved.
(embodiment 6)
Fig. 9 is a perspective view showing an example of the configuration of the 1 st surface 110a of the rear guide flange portion 106a according to the present embodiment. In fig. 9, the same elements as those in embodiment 1 are denoted by the same reference numerals.
As shown in fig. 9, a plurality of ribs 114 are provided as another form of the convex portion 111 on the surface of the 1 st surface 110a of the rear guide flange portion 106a.
Thereby, the rear guide flange portion 106a is reinforced. Therefore, when the air conditioner 100 is operating, the rear guide flange portion 106a can be prevented from vibrating under the influence of the impact of the airflow on the rear guide flange portion 106a, the vibration of the motor, or the like. Therefore, stable air blowing performance can be exhibited.
In the present embodiment, the rib 114 extends in a direction perpendicular to the rotation axis of the cross flow fan 103 (see fig. 2). However, the rib 114 may extend in a direction parallel to the rotation axis of the cross flow fan 103.
The rear guide flange portion 106a may be configured such that either one of the convex portions and the concave portions described in the above-described embodiments is disposed on the 1 st surface, or both of the convex portions and the concave portions may be disposed.
Industrial applicability of the invention
The air conditioner of the invention can reduce ventilation resistance in the flange back-side air passage and improve air supply performance by rectifying the air flow flowing in the flange back-side air passage. The structure of the present invention is preferably used for a household air conditioner and an industrial air conditioner.
Description of the reference numerals
100. Air conditioner
100A body
101. Suction inlet
102. Blow-out opening
102a ventilation path (the 1 st path)
103. Cross-flow fan
104. Heat exchanger
104a front heat exchanger
104b rear heat exchanger
105. Stabilizer
106. Rear guide
106a rear guide flange
106b front end of rear guide flange
107. Water pan
108. Projecting end part
109. Flange back side wind path (2 nd wind path)
110a rear guide flange part opposite surface (No. 1)
110b No. 2
111. Convex part
112. Concave part
113. Slit
114. A rib portion.
Claims (5)
1. An air conditioner characterized by comprising:
a main body having an air inlet and an air outlet;
a front heat exchanger disposed inside the main body and on a front surface side of the main body;
a rear heat exchanger disposed inside the main body and on a rear surface side of the main body;
a cross-flow fan disposed inside the main body and having a rotation axis parallel to a left-right direction of the main body; and
a stabilizer and a rear guide which are respectively arranged on the front side and the back side of the outer periphery of the cross flow fan to form a 1 st air path,
the rear guide has a rear guide flange portion disposed between the rear heat exchanger and the cross-flow fan,
the rear guide flange portion has a 1 st surface opposite the rear heat exchanger,
the air conditioner further includes a water receiving tray disposed to be connected to the rear guide flange portion,
the rear heat exchanger and the 1 st surface of the rear guide flange portion constitute a 2 nd air passage,
the 2 nd air passage is configured such that, in a cross section perpendicular to a rotation axis of the cross flow fan, a distance between the 1 st surface of a closest portion where the 1 st surface and the rear surface heat exchanger are closest to each other and the rear surface heat exchanger is shorter than a distance between the 1 st surface of an upper portion of the closest portion of the 2 nd air passage and the rear surface heat exchanger, and the distance between the 1 st surface of the rear guide flange portion and the rear surface heat exchanger is the same as or gradually smaller from a front end of the rear guide flange portion to the closest portion,
the rear guide flange portion is connected to the drain pan at the proximal portion.
2. The air conditioner according to claim 1, characterized in that:
the rear guide flange portion has a projecting end portion on a 2 nd surface facing the cross flow fan on a surface on the back side of the 1 st surface.
3. The air conditioner according to claim 1 or 2, characterized in that:
the 1 st surface of the rear guide flange portion has a planar shape.
4. The air conditioner according to claim 1 or 2, characterized in that:
a convex portion is disposed on the 1 st surface of the rear guide flange portion.
5. The air conditioner according to claim 1 or 2, characterized in that:
a recess is disposed on the 1 st surface of the rear guide flange portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-112048 | 2019-06-17 | ||
| JP2019112048A JP2020204430A (en) | 2019-06-17 | 2019-06-17 | Air conditioner |
| PCT/JP2020/021947 WO2020255717A1 (en) | 2019-06-17 | 2020-06-03 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113439187A CN113439187A (en) | 2021-09-24 |
| CN113439187B true CN113439187B (en) | 2022-11-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080014923.6A Active CN113439187B (en) | 2019-06-17 | 2020-06-03 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3985323A4 (en) |
| JP (1) | JP2020204430A (en) |
| CN (1) | CN113439187B (en) |
| WO (1) | WO2020255717A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020255717A1 (en) | 2020-12-24 |
| CN113439187A (en) | 2021-09-24 |
| JP2020204430A (en) | 2020-12-24 |
| EP3985323A1 (en) | 2022-04-20 |
| EP3985323A4 (en) | 2022-08-03 |
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