JP2013130329A - Outdoor unit for air conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning device equalizing a wind velocity distribution of an airflow passing through a heat exchanger, and to provide a heat exchanger.SOLUTION: An air conditioning device includes a fin-and-tube heat exchanger 21 and a fan 22 for sending air to the heat exchanger 21 in a housing 11 thereof, wherein fin widths W1 and W2 of the heat exchanger 21 along an air delivery direction X of the fan 22 are formed wider than the fin widths W of different portions in a position closer to the fan 22.

Description

  The present invention relates to an air conditioner including a fin and tube heat exchanger and a blower that blows air to the heat exchanger.

  In general, a compressor disposed on the bottom plate of the housing, a heat exchanger having a substantially U-shaped cross section disposed on the bottom plate and forming the back and left and right sides of the housing, and an upper portion of the heat exchanger There is known an air conditioner including a blower disposed (see, for example, Patent Document 1).

JP 2006-189196 A

However, in this type of air conditioner, at a position close to the fan of the heat exchanger, the wind speed of the airflow flowing through the heat exchanger is higher than the wind speed of the airflow flowing through other parts of the heat exchanger. Become rapid. Thus, when the nonuniformity of the wind speed distribution occurs in each part of the heat exchanger, there is a problem that the heat exchange efficiency of the heat exchanger is lowered.
This invention is made | formed in view of the situation mentioned above, and it aims at providing the air conditioning apparatus and the heat exchanger which aimed at equalization of the wind velocity distribution of the airflow which passes a heat exchanger.

  In order to achieve the above object, the present invention provides an air conditioner including a fin-and-tube heat exchanger and a blower that blows air to the heat exchanger in a casing. The fin width of the heat exchanger along the side is formed to be wider than the fin width in other portions at a position close to the blower.

  Further, the present invention is the above air conditioner, wherein the blower is disposed on an upper portion of the casing, and is a laterally sucking and blowing-out outdoor unit, and the fin has a wide width on the upper portion of the heat exchanger. The formed site extends.

  Further, the present invention is characterized in that in the above air conditioner, the widely formed portion is formed inside the heat exchanger.

  Further, the present invention is characterized in that, in the above air conditioner, the fin shape of the widely formed portion projects into a rectangular shape.

  Further, the present invention is characterized in that, in the above air conditioner, the fin shape of the widely formed portion projects in a triangular shape.

  In order to achieve the above object, the present invention is a fin-and-tube heat exchanger, wherein the fin width of the heat exchanger along the blowing direction of the blower is close to the blower. It is characterized in that it is formed wider than the fin width in other parts.

  The fin-and-tube heat exchanger according to the present invention is characterized in that the heat exchanger is a heat exchanger having a substantially U-shaped cross section.

  According to the present invention, in an air conditioner including a fin and tube type heat exchanger and a blower that blows air to the heat exchanger in a casing, the heat exchanger along the blowing direction of the blower. Since the fin width is formed wider than the fin width in other parts at a position close to the blower, the ventilation resistance of air passing through the position close to the blower of the heat exchanger can be increased, and the heat exchanger The amount of passing air from other parts can be increased. Thereby, the air velocity distribution of the airflow passing through the heat exchanger can be made uniform, and the heat exchange efficiency of the heat exchanger can be improved.

It is an external appearance perspective view of the outdoor unit of the air conditioning apparatus which shows one embodiment of this invention. It is a sectional side view of an outdoor unit. It is a top view which shows the internal structure of an outdoor unit. It is a perspective view which shows a heat exchanger. It is the elements on larger scale which show the structure of a heat exchanger. It is a perspective view which shows a wide fin board. It is a fragmentary perspective view which shows the heat exchange part of another embodiment. It is a perspective view which shows the wide fin board of another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The air conditioner according to this embodiment includes an outdoor unit 10 and an indoor unit (not shown), and performs a cooling operation and a heating operation by flowing a refrigerant through a refrigerant circuit connected by a refrigerant pipe. The outdoor unit 10 is installed outside, exchanges heat with outdoor air, condenses the refrigerant during the cooling operation and releases heat to the outside air, and evaporates the refrigerant during the heating operation and takes in heat from the outside air. In addition, the directions such as up and down and left and right described below indicate directions when the outdoor unit 10 is viewed from the front side in a state where the outdoor unit 10 is installed.

FIG. 1 is an external perspective view of the outdoor unit 10, and FIG. 2 is a side sectional view of the outdoor unit 10 viewed from the right side. The outdoor unit 10 includes a unit case (housing) 11 having a substantially rectangular parallelepiped box shape. The unit case 11 includes a bottom plate 12 that is fixed over a pair of leg members 13 and 13 extending in the front-rear direction. The support plate 14 includes a support 14 extending in the vertical direction from four corners of the bottom plate 12 and a front panel 15.
A heat exchanger 21 to be described later is disposed on the bottom plate 12, and the back surface and the left and right side surfaces of the unit case 11 are formed by the heat exchanger 21. In addition, an outdoor fan (blower) 22 and a bell mouth 25 are arranged around the outdoor fan 22 at the upper portion of the heat exchanger 21, and an air outlet 25 A of the bell mouth 25 is connected to the outdoor fan 22. A fan guard 26 for preventing contact is disposed. A decorative panel 27 provided with a heat insulating material such as foamed polystyrene is provided around the bell mouth 25.

The front panel 15 includes an upper panel 15A and a lower panel 15B which are divided into two parts in the vertical direction. The upper panel 15A and the lower panel 15B are bridged and fixed between the columns 14 and 14 on the front side. As shown in FIG. 2, refrigerant circuit components 32 such as a compressor 30 and a valve body such as a four-way valve and an expansion valve are connected to the front side of the unit case 11 by piping. One end side of the piping of the refrigerant circuit component 32 is connected to the indoor unit via the heat exchanger 21, and the other end side of the piping of the refrigerant circuit component 32 is connected to the indoor unit. A refrigerant circuit for circulating the refrigerant is configured.
On the front side of the unit case 11, an electrical box 34 that houses a control unit for controlling various devices of the outdoor unit 10 is disposed above the compressor 30 and the like. Thereby, by removing the front panel 15, the operator can easily perform maintenance work of the compressor 30 and the control unit in the electrical box 34 from the front side.

As shown in FIG. 2, the outdoor fan 22 is disposed at the upper part of the unit case 11 and is disposed above the heat exchanger 21, and a propeller fan 24 attached to the shaft of the fan motor 23. It is configured with. Between the support columns 14 and 14 adjacent to each other in the width direction of the unit case 11, a connecting member (not shown) that connects the support columns 14 and 14 is provided at a position corresponding to the upper end of the heat exchanger 21. It is fixed to the support frame 16 spanned between these connecting members.
When the propeller fan 24 is rotationally driven by the fan motor 23, as shown by the arrow X in the periphery of the outdoor unit 10, more specifically, in FIG. Outside air is sucked into the unit case 11 from the side and right side, and is discharged outside through the blowout opening 25 </ b> A of the bell mouth 25 provided on the upper surface of the unit case 11. That is, the outdoor unit 10 is configured as a side suction type and a top side blowing type in which air is sucked in from the side surface and air after heat exchange is blown out from the upper surface.

  On the bottom plate 12 of the unit case 11, as shown in FIG. 3, a heat exchanger 21 formed by being bent into a substantially U-shaped cross section is disposed. The heat exchanger 21 is arranged on the left side surface of the unit case 11. Are arranged along the back surface and the right side surface, and on both end surfaces of the heat exchanger 21 are tube plates 21A for fixing refrigerant tubes that are continuously bent in a meandering manner in the heat exchanger 21. Is provided.

  Inside the heat exchanger 21, an accumulator 35, an oil separator 36 and a receiver tank 37 that constitute a part of the refrigerant circuit together with the compressor 30 and the refrigerant circuit component 32 are arranged on the bottom plate 12. Yes. The frame 17 is fixed to the center of the upper portion of the accumulator 35. The frame 17 extends from the upper end of the accumulator 35 and is fixed to a connecting member that connects the columns 14 and 14, and prevents the accumulator 35 from swinging. ing.

  These accumulator 35, oil separator 36 and receiver tank 37 are pressure vessels for temporarily storing refrigerant or refrigerating machine oil, and have a low maintenance frequency. On the other hand, since the compressor 30 and the refrigerant circuit component 32 described above include electric elements such as a motor and a coil, the maintenance frequency is high. For this reason, in this configuration, a partition plate 38 extending upward from the bottom plate 12 to the lower end portion of the electrical box 34 is provided, and by this partition plate 38, the inside of the unit case 11 is heat exchange chamber 39 as shown in FIG. And the machine room 50. The machine room 50 accommodates the compressor 30 and the refrigerant circuit component 32 having a high maintenance frequency, and the heat exchange chamber 39 has a heat exchanger 21, an accumulator 35, an oil separator 36, and a receiver tank 37, which are less frequently maintained. Contained.

Next, the configuration of the heat exchanger 21 will be described. 4 and 5 are diagrams showing the configuration of the heat exchanger 21, FIG. 4 is an overall perspective view of the heat exchanger 21, and FIG. 5 is a partial perspective view of the heat exchange unit 40 that constitutes the heat exchanger 21. FIG.
As shown in FIG. 4, the heat exchanger 21 has a fin-and-tube type heat exchanging unit 40 arranged in three rows in the front and rear direction in the ventilation direction X, and has a substantially U-shaped cross section. Each heat exchanging unit 40 includes a plurality of fin plates (fins) 41 arranged at intervals between the pair of tube plates 21 </ b> A and a plurality of tubes 43 passing through the fin plates 41. Yes. The tubes 43 are arranged in a plurality of stages in the vertical direction substantially parallel to each other, and are connected as one refrigerant pipe by a U-shaped portion (U vent) 44 provided at the end of each tube 43. Each fin plate 41 is formed in an elongated, substantially rectangular plate shape, and the outdoor fan 22 is disposed on the upper end side in the longitudinal direction of the fin plate 41.

The heat exchanger 21 includes a portion (wide portion) 46 whose upper part is formed widely toward the inside of the unit case 11 along the ventilation direction X, that is, the blowing direction of the outdoor fan 22.
By the way, the outdoor unit 10 shown in this embodiment is a lateral suction, top blowing type outdoor unit, and the unit case 11 is formed in a tall shape having a relatively high height (see FIG. 1). The outdoor unit 10 blows out the air sucked from the side of the unit case 11 through the heat exchanger 21 from the upper surface of the unit case 11 by driving an outdoor fan 22 arranged at the upper part of the heat exchanger 21. The amount of air sucked into the unit case 11 via the heat exchanger 21 is farther from the outdoor fan 22, that is, at the lower part of the unit case 11 than at the position closer to the outdoor fan 22, that is, from the upper part of the unit case 11. Less. Thus, if the passing air volume fluctuates at each position of the heat exchanger 21, it greatly affects the reduction of the heat dissipation efficiency of the heat exchanger 21.

  In the present embodiment, the heat exchanger 21 is provided with a wide portion 46 that is formed wide toward the inside of the heat exchanger along the ventilation direction X that is the blowing direction of the outdoor fan 22 at the top. In this wide part 46, since the passage distance of the air which passes the heat exchanger 21 becomes longer than another site | part, ventilation resistance increases. Thereby, the ventilation resistance of the position close | similar to the outdoor fan 22 of the upper part of the heat exchanger 21 can be made to increase rather than the ventilation resistance of another site | part. Therefore, the passing air volume from the lower part of the heat exchanger 21 with low ventilation resistance can be increased. Therefore, the passage air volume can be made uniform between the position near the outdoor fan 22 of the heat exchanger 21 and other parts, and the heat radiation efficiency of the heat exchanger 21 can be improved.

  The wide part 46 of the heat exchanger 21 has a wide fin plate (at a position corresponding to the wide part 46 of the heat exchange part 40 </ b> A arranged at the innermost position among the three heat exchange parts 40 constituting the heat exchanger 21. (Fin) 41A is arranged. As shown in FIG. 6, the wide fin plate 41 </ b> A is formed such that the fin width W <b> 1 at the top of the fin plate 41 </ b> A disposed near the outdoor fan 22 is wider than the fin width W of other portions. The fin width W at the lower portion of the wide fin plate 41 </ b> A is formed to have the same width as the fin width W of the fin plate 41.

FIG. 6 is a view showing a wide fin plate 41A, which is a fin plate 41 arranged at a position corresponding to the wide portion 46 of the heat exchange unit 40A. The wide fin plate 41 </ b> A encloses a plate-like portion 51 having a substantially rectangular plate shape, a through-hole 53 formed in the plate-like portion 51 so as to be arranged at equal intervals in the vertical direction, and surrounds the periphery of the through-hole 53. A fin collar 54 erected substantially vertically with a predetermined rising dimension.
The wide fin plate 41 </ b> A is formed so that the fin width of the upper portion of the plate-like portion 51 disposed at a position close to the outdoor fan 22 is gradually widened toward the upper end, and is triangular inward of the heat exchanger 21. It is provided so as to protrude into the shape. Note that the wide fin plate 41A shown in FIG. 6 is formed so that the fin width gradually increases in the range of the height dimension H1 from the predetermined height position of the plate-like portion 51 toward the upper end portion. However, the fin plate 41A may have a substantially triangular shape that gradually widens from the lower end toward the upper end.

According to this configuration, the wide fin plate 41 </ b> A having a wide upper portion disposed at a position close to the outdoor fan 22 is disposed as close as possible to the wide portion 46 of the heat exchanging portion 40 </ b> A disposed in the innermost portion of the heat exchanger 21. By doing so, the wide part 46 wider than other parts can be formed in the upper part of the heat exchanger 21. For this reason, the wide part 46 which is a site | part wider than another site | part can be formed in the upper part near the outdoor fan 22 of the heat exchanger 21 with a simple structure.
In the wide part 46, since the passage distance of the air which passes the heat exchanger 21 becomes long, the contact area of air and the fin board 41A spreads, and ventilation resistance increases. When the outdoor fan 22 is driven, air around the unit case 11 is sucked from the side, passes between the fin plates 41 and 41A of the heat exchanger 21, and is sucked into the unit case 11. At this time, heat exchange is performed. The ventilation resistance of the upper part of the vessel 21 is increased by the wide part 46. Therefore, the passing air volume from the lower part of the heat exchanger 21 whose ventilation resistance becomes smaller than that of the upper part increases. According to this configuration, the wide portion 46 formed wider than other portions is provided on the upper portion of the heat exchanger 21 close to the outdoor fan 22, and the ventilation resistance at the upper portion of the heat exchanger 21 is increased. The amount of air passing from the lower part of the heat exchanger 21 far from the fan 22 can be increased, and the amount of air passing through the entire heat exchanger 21 can be made uniform, so that the heat dissipation efficiency of the heat exchanger 21 is improved. Can do.

  Further, the wide portion 46 of the heat exchanger 21 has a wide fin plate 41 </ b> A in which the upper portion is formed wider than the lower portion so as to be as wide as the wide portion 46 of the heat exchange portion 40 </ b> A disposed in the innermost portion of the heat exchanger 21. In the wide portion 46, the heat exchange area between the air passing through the wide portion 46 and the wide fin plate 41A is widened. Thereby, even if the ventilation resistance of the upper part of the heat exchanger 21 is raised and the amount of passing air is reduced, the heat radiation amount of the heat exchanger 21 can be increased. Moreover, since the wide part 46 is provided in the heat exchange part 40 arrange | positioned in the innermost part of the heat exchanger 21, the external shape of the outdoor unit 10 is not changed.

  It should be noted that the extent to which the height dimension H1 of the widened fin plate 41A is widened or the fin width W1 at the upper end of the wide fin plate 41A is determined as a whole. In order to equalize the amount of air passing through, it can be obtained by experiments, simulations, etc., and should be an optimum value depending on the dimensions of the unit case 11, the capacity of the outdoor fan 22, the arrangement state of components in the unit case 11, etc. Can do.

  The fin collar 54 is formed with a predetermined rising dimension, and the rising pitch of the fin collar 54 defines a fin pitch that is an interval between the fin plates 41. That is, the rising dimension of the fin collar 54 is formed to be approximately the same value as the desired fin pitch between the fin plates 41. During the assembly process of the heat exchange section 40, the fin collar 54 is brought into contact with the adjacent fin plate 41 when the tube 43 is inserted into the through hole 53 of the fin plate 41, so that the fin pitch aimed at the fin plate 41 can be simplified. Can be arranged. Thereby, the consistency of the fin pitch between the fin boards 41 can be improved, and the assembly workability | operativity of the heat exchange part 40 can be improved.

  The fin collar 54 is formed so that the inner peripheral surface thereof is in close contact with the outer peripheral surface of the tube 43 in the circumferential direction. According to this configuration, since the contact area between the fin plate 41 and the tube 43 can be increased, the heat transfer efficiency from the tube 43 to the fin plate 41 can be increased.

  Further, the fin plate 41 includes convex portions 55 formed between the through holes 53. The convex portion 55 is formed on the plate-like portion 51 of the fin plate 41 by, for example, pressing. Since the thin plate-like fin plate 41 includes the convex portion 55, the strength is increased, and the fin plate 41 can be prevented from being deformed in the assembly process or the bending process of the heat exchange unit 40.

<Another embodiment>
FIG. 7 shows a heat exchange part 40B arranged in the innermost part of the heat exchanger 21 according to another embodiment of the present invention, and shows the heat exchange part 40B at a position corresponding to the wide part 46A of the heat exchanger 21. FIG. In the above-described embodiment, the fin shape of the fin plate 41 arranged in the wide portion 46 of the heat exchanging portion 40A projects in a triangular shape toward the inside of the heat exchanger 21, and gradually widens toward the upper end portion. It became the composition which becomes. In this other embodiment, a step 57 is provided in the heat exchanging part 40B, and a wide wide part 46A is formed at the upper end of the heat exchanging part 40B so as to project inward in a rectangular shape. In this other embodiment, the configuration of the outdoor unit 10 is the same as that of the above-described embodiment except for the configuration of the wide portion 46A described below and the wide fin plate (fin) 41B disposed in the wide portion 46A. In the wide portion 46A and the wide fin plate 41B, the same reference numerals are given to the same components as those in the above-described embodiment, and the description thereof is omitted.

  The heat exchanger 21 of this another embodiment has a wide fin plate at a position corresponding to the wide portion 46 </ b> A of the heat exchange portion 40 </ b> B arranged at the innermost among the three heat exchange portions 40 constituting the heat exchanger 21. 41B is arranged. As shown in FIG. 8, the wide fin plate 41 </ b> B is formed in an approximately L shape, and the upper fin width W <b> 2 of the plate-like portion 51 </ b> A is formed wider than the lower fin width W <b> 1 of the plate-like portion 51. Yes. In other words, the wide fin plate 41 </ b> B is formed so that the fin shape of a widely formed portion projects in a rectangular shape toward the inside of the heat exchanger 21. The fin width of the plate-like portion 51A is formed with a fin width W wider than the lower portion in a range of a predetermined height H2 from the upper end. The height H2 at which the plate-like portion 51 is formed with the fin width W2 corresponds to the height of the portion where the passing air volume is excessively larger than the lower portion of the heat exchanger 21 at the upper portion of the heat exchanger 21. In order to equalize the entire passing air volume, it can be obtained by experiments, simulations, etc., and is set to an optimum value depending on the dimensions of the unit case 11, the capacity of the outdoor fan 22, the arrangement state of components in the unit case 11, etc. be able to.

  According to this configuration, a wide fin disposed at a position corresponding to the wide portion 46A of the heat exchanging portion 40A so as to form the wide portion 46A on the upper portion of the heat exchanging portion 40A disposed in the innermost portion of the heat exchanger 21. The fin width W2 at the upper part of the plate 41B is formed wider than the fin width W at the lower part, and this widely formed part projects in a rectangular shape inside the heat exchanger 21. Thereby, the wide part 46A which is a wide site | part can be provided in the upper part of the heat exchanger 21 by simple structure, and the ventilation resistance of the upper part of the heat exchanger 21 can be increased rather than the lower part. Thereby, the ventilation resistance of the upper part of the heat exchanger 21 provided with the wide part 46A can be increased, air can be easily sucked from the lower part of the heat exchanger 21, and air can flow evenly throughout the heat exchanger 21. Therefore, the passing air volume of the entire heat exchanger 21 can be made uniform, and the heat dissipation efficiency of the heat exchanger 21 can be improved.

  As described above, according to the embodiment to which the present invention is applied, an air conditioner in which the casing 11 includes the fin-and-tube heat exchanger 21 and the blower 22 that blows air to the heat exchanger 21. In the apparatus, the fin widths W <b> 1 and W <b> 2 of the heat exchanger 21 along the blowing direction X of the blower 22 are formed wider than the fin widths W at other portions at a position close to the blower 22. Thereby, the ventilation resistance of the heat exchanger 21 increases compared with another site | part in the position where it is close to the air blower 22 and a passing wind speed becomes quick. Therefore, the passing air volume at a position close to the blower 22 can be suppressed, the passing air volume of other parts can be increased, and the entire passing air volume of the heat exchanger 21 can be made uniform. Heat dissipation efficiency can be improved.

  Further, according to the embodiment to which the present invention is applied, the blower 22 is arranged on the upper portion of the housing 11, and is the outdoor unit 10 for side suction and upper blowing, and the fin width W1, on the upper portion of the heat exchanger 21. A site where W2 is widely formed extends. According to this configuration, the fin widths W1 and W2 at the upper part of the heat exchanger 21 are formed wider than the fin width W at the lower part. Can be easily provided. Thereby, by raising the ventilation resistance of the upper part of the heat exchanger 21 close to the blower 22, the passing air quantity at the upper part of the heat exchanger 21 is suppressed, and the passing air quantity at the lower part of the heat exchanger 21 is reduced. Can be increased. Therefore, the passing air volume of the entire heat exchanger 21 can be made uniform, and the heat dissipation efficiency of the heat exchanger 21 can be improved.

  In addition, according to the embodiment to which the present invention is applied, the widely formed portion 46 is formed inside the heat exchanger 21, so that the heat exchanger 21 can be changed without changing the outer shape of the outdoor unit 10. It is possible to increase the ventilation resistance of the upper part of the heat exchanger 21 by providing a wide part formed wider than the fin width in the other part in the upper part of the heat exchanger 21. Thereby, since the passing air volume of the upper part of the heat exchanger 21 can be suppressed and the passing air volume of the other part, especially the lower part of the heat exchanger 21 can be increased, the passing air volume of the heat exchanger 21 whole is made uniform. The heat dissipation efficiency of the heat exchanger 21 can be improved.

  Further, according to the embodiment to which the present invention is applied, since the fin shape of the widely formed portion 46 protrudes in a rectangular shape, the fin plate 41B having a wide formed portion protruding in a rectangular shape on the upper portion is provided with a wide portion. By arrange | positioning to 46, the site | part whose ventilation resistance is larger than another site | part can be easily formed in the upper part of the heat exchanger 21. FIG. Moreover, since the heat radiation area of the fin plate 41B can be increased by forming a portion projecting in a rectangular shape on the fin plate 41B, the passing wind speed is reduced without reducing the heat radiation efficiency of the widely formed portion. The heat dissipation efficiency of the heat exchanger 21 can be improved.

  In addition, according to the embodiment to which the present invention is applied, the fin shape of the widely formed portion projects in a triangular shape, so that the ventilation resistance is gradually increased as approaching the blower 22 according to the distance from the blower 22. Therefore, the fin shape of the site | part formed widely can be formed. Thereby, the passage air volume of the whole heat exchanger 21 can be made uniform, and the heat dissipation efficiency of the heat exchanger 21 can be improved. Moreover, since the heat radiation area of the fin plate 41B can be increased by forming a portion projecting in a triangular shape on the fin plate 41B, the passing wind speed is reduced without reducing the heat radiation efficiency of the widely formed portion. The heat dissipation efficiency of the heat exchanger 21 can be improved.

  Moreover, according to embodiment to which this invention is applied, it is a fin and tube type heat exchanger 21, Comprising: The fin width of the heat exchanger 21 along the ventilation direction X of the air blower 22 is a position near the air blower 22 In this case, the fin is formed wider than the fin width in other portions. Thereby, the ventilation resistance of the position near the air blower 22 of the heat exchanger 21 can be increased, and the amount of passing air from other parts can be increased. Therefore, the passing air volume of the entire heat exchanger 21 can be made uniform, and the heat dissipation efficiency of the heat exchanger 21 can be improved.

  Further, according to the embodiment to which the present invention is applied, the heat exchanger 21 is a heat exchanger 21 having a substantially U-shaped cross section, and therefore the heat exchanger 21 is arranged to form the back surface and both side surfaces of the housing 11. In addition, the heat exchange area can be increased, and the heat dissipation efficiency of the heat exchanger 21 can be improved.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to this. In the present embodiment, the heat exchanger 21 is formed by arranging three heat exchange units 40 in a row, but is not limited to this, and the heat exchange unit 40 is arranged in an arbitrary number of rows, for example, one row or a plurality of rows. The structure to form may be sufficient. Further, in the present embodiment, the wide portion 46 is provided in the heat exchange portion 40 arranged at the innermost and is formed so as to protrude to the inside of the unit case 11, but not limited thereto, the heat exchanger 21. The heat exchange part 40 arranged at the outermost part may also have a configuration in which the wide part 46 is formed so as to protrude to the outside of the unit case 11.

W, W1, W2 Fin width 10 Outdoor unit 11 Unit case (housing)
21 Heat exchanger 22 Blower (outdoor fan)
30 Compressor 40, 40A, 40B Heat exchange part 41 Fin plate 41A, 41B Wide fin plate 46, 46A Wide part (part formed widely)
X Ventilation direction (air blowing direction)

Claims (7)

  An air conditioner having a fin and tube type heat exchanger and a blower that blows air to the heat exchanger in a housing, wherein a fin width of the heat exchanger along a blowing direction of the blower is the blower The air conditioner is characterized in that it is formed wider than the fin width in the other part at a position close to.   The blower is disposed at the upper part of the casing, and is an outdoor unit for side suction and upper blowing, and a part where the width of the fin is widely formed extends at the upper part of the heat exchanger. The air conditioning apparatus according to claim 1.   The outdoor unit of the air conditioner according to claim 1 or 2, wherein the widely formed portion is formed inside the heat exchanger.   The air conditioner according to any one of claims 1 to 3, wherein a fin shape of the widely formed portion projects in a rectangular shape.   The air conditioner according to any one of claims 1 to 3, wherein a fin shape of the widely formed portion projects in a triangular shape. A fin-and-tube heat exchanger,
A fin-and-tube heat exchanger characterized in that a fin width of the heat exchanger along a blowing direction of the blower is formed wider than a fin width in other portions at a position close to the blower. .   The fin-and-tube heat exchanger according to claim 6, wherein the heat exchanger is a heat exchanger having a substantially U-shaped cross section.

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