JP2018179386A - Air conditioner - Google Patents

Abstract

An air conditioner capable of reliably guiding condensed water dripped from a heat exchanger to a drain pan is provided. An air conditioner according to the present invention includes a housing k, a fan 4 disposed in the housing k, and a heat exchanger 8 disposed near the fan 4, and the housing k includes: The heat exchanger 8 includes a front heat exchanger 8a, a front upper heat exchanger 8b, and an air inlet 1s at the top, and a blow-out opening 1f that blows out air during air conditioning. The water droplet holding part 2 is installed on the downstream side of the front upper heat exchanger 8b. [Selection] Figure 4

Description

  The present invention relates to an air conditioner.

  Heretofore, in air conditioners, efficient heat exchangers have been studied due to the improvement of energy saving performance. However, due to the decrease in the hydrophilicity of the fins at the site where the indoor unit of the air conditioner is installed, dew fly by dripping of condensed water from the surface of the indoor heat exchanger occurs infrequently.

  As a method of flowing the condensed water dropped from the indoor heat exchanger to the drain pan, there is a method of attaching amy. However, in the conventional method, the Ami attached to the heat exchanger is fixed to the drain pan, and the Ami is not attached to the heat exchanger not in contact with the drain pan.

Japanese Patent Application Laid-Open No. 6-347055

The following method is known as a method for preventing dripping of condensed water from the fins due to the decrease in the hydrophilicity of the fins.
A method is used in which a member is added to the nose on the back side and the condensed water dropped is allowed to flow to a drain pan, or a method in which amy is attached to an indoor heat exchanger and is flowed to the drain pan (Patent Document 1). As a method of fixing the amy, in the method of fixing the amy to the drain pan, since the condensed water falls spontaneously, the water treatment of the end face of the fixed part is unnecessary.

  However, for the addition of Ami located downstream of the heat exchanger in front of and above the lambda-type heat exchanger used in the indoor unit and upstream of the cross flow fan, the Ami is attached to the heat exchanger Condensed water may drip along the mounting member.

  Furthermore, when Amy is attached by floating from the heat exchanger, the condensed water may grow in the space between the heat exchanger and the Amy to form water droplets and drip through the hole of the Amy.

  The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an air conditioner capable of reliably guiding condensed water dropped from a heat exchanger to a drain pan.

  In order to solve the above-mentioned subject, the air conditioner of the present invention is provided with the case, the fan arranged in the case, and the heat exchanger arranged near the fan, and the case is indoors. It has an air inlet at the top and an outlet at the lower front for blowing out air in air conditioning, and the heat exchanger has a front heat exchanger and a front upper heat exchanger, A water droplet holder is installed downstream of the front upper heat exchanger.

  According to the present invention, it is possible to provide an air conditioner that can reliably lead condensed water dropped from a heat exchanger to a drain pan.

The perspective view which looked at the indoor unit of the air conditioner in the attachment state which concerns on embodiment of this invention from the diagonally right lower side of a side. The cross-sectional view which looked at the indoor unit concerning embodiment from the right side. (A) is a diagram showing Rasami 2 in the direction in which the hole can not be seen and the direction in which the hole can be seen; (b) is a perspective view in which Rasami is seen from the direction in which the hole can not be seen; The perspective view seen from the direction to see, (d) is an enlarged view of (c). The front upper heat exchanger which shows the attachment method of rasmite, the expanded sectional view of Rasami vicinity. The figure which shows the size of the hole of Rasami. The expansion perspective view which looked at the front upper part heat exchanger 8b vicinity which shows the fixing method of a comparative example from diagonally lower right. (A) is a figure which shows the spring of the example of the attachment member of embodiment, (b) is I direction arrow line view of (a). (A) is a figure which shows the spring of the other example of the attachment member of embodiment, (b) is II direction arrow line view of (a).

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an amid member (for example, rasami) attached as a water droplet holder downstream of the air flow of a heat exchanger disposed on the front upper portion in an indoor unit of an air conditioner and its attachment structure.
According to the present invention, the condensed water dripping from the heat exchanger is introduced to the drain pan via the fixing member attached to the heat exchanger without being fixed to the surrounding member such as the drain pan. Moreover, even in a situation where suction is caused by negative pressure by a fan, the shape and mounting method of the Amy member that does not affect the condensed water due to the variation of the wind due to the shape of the attached Amy member are provided. And it is set as the structure where it can be reliably led to other heat exchangers or a drain pan, without the condensed water which generate | occur | produced in the heat exchanger dripping.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an indoor unit 1 of an air conditioner C in an attached state according to an embodiment of the present invention as viewed obliquely from the lower right. FIG. 2 is a cross-sectional view of the indoor unit 1 according to the embodiment as viewed from the right side.
The indoor unit 1 of the air conditioner C of the embodiment is attached to a mounting plate (not shown) fixed to a wall. In FIG. 1, the outdoor unit of the air conditioner C is omitted.

In the indoor unit 1, a cross-flow fan 4 extending in the left and right direction is disposed at the center. As shown in FIG. 2, the heat exchangers 8 (8 a, 8 b, 8 c) having a lambda shape in a side view are disposed surrounding the cross flow fan 4.
The heat exchanger 8 has a front heat exchanger 8a, a front upper heat exchanger 8b, and a rear upper heat exchanger 8c.

In the indoor unit 1, a suction port 1s is opened at an upper portion of a housing k forming an outer shell, and a blowout port 1f is opened at a front lower portion of the housing k.
The air in the room is sucked into the inside of the housing k from the suction port 1s by the cross flow fan 4 (open arrow α1 in FIG. 1). The air sucked into the housing k exchanges heat with the refrigerant flowing through the heat exchanger 8 and is air-conditioned. The air-conditioned air is blown out into the room R from the blowout port 1f by the cross flow fan 4 (white arrow α2 in FIG. 1).

Below the front heat exchanger 8a, a front drain pan 6 for receiving condensed water generated in the front heat exchanger 8a and the front upper heat exchanger 8b is formed to receive the condensed water. At the rear of the housing k, a rear drain pan 5 is formed to receive the condensed water generated in the rear upper heat exchanger 8c. The condensed water received by the rear drain pan 5 is guided to the front drain pan 6.
A rasmine 2 is attached to the downstream side of the air flow heat-exchanged by the front upper heat exchanger 8b.

<Rasmine 2>
FIG. 3 (a) is a view showing rasmine 2 in a direction 2a in which holes 2c can not be seen and in a direction 2b in which holes 2c are seen, and in FIG. 3 (b) in which rasmi 2 is seen from a direction 2a in which holes 2c are not seen FIG. 3 (c) is a perspective view of the rasmine 2 as viewed from the direction 2b in which the holes 2c can be seen, and FIG. 3 (d) is an enlarged view of FIG. 3 (c).

  Rasumi 2 uses, for example, a thin aluminum plate as a soft material. Rasami 2 is manufactured by the method of making a cut in one aluminum flat plate and spreading it. As a result of the incision being widened, a hole 2c (see FIGS. 3 (c) and (d)) is formed in the rasmite 2.

  When Rasami 2 is viewed from the direction 2a where the hole 2c can not be seen (see FIG. 3A), as shown in FIG. 3B, the view is interrupted by the aluminum plate and the hole 2c can not be seen. On the other hand, when Rasami 2 is viewed from the direction 2b where the hole 2c can be seen (see FIG. 3 (a)), as shown in FIG. 3 (c), looking at the hole 2c without being blocked by the aluminum plate Yes (see FIG. 3 (d)).

  That is, when the rasmine 2 is viewed from the direction 2a in which the hole 2c can not be seen, it is considered that the opening area of the hole 2c seen from the direction is not or small. On the other hand, when the rasmine 2 is viewed from the direction 2b in which the hole 2c can be seen, it is considered that the opening area of the hole 2c viewed from the direction is large. That is, Rasami 2 has a direction 2a in which the hole can not be seen and a direction 2b in which the hole 2c can be seen.

  Therefore, as shown in FIG. 2, the upper surface of rasami 2 is such that the direction 2a in which the holes 2c of rasami 2 can not be seen is along the direction w1 in which the condensed water dropped from the front upper heat exchanger 8b flows above rasami 2 Are disposed below the front upper heat exchanger 8b.

Thereby, it is suppressed that the condensed water dripping from the front upper heat exchanger 8b falls through the hole 2c of the rasmite 2. Here, since Rasami 2 is used as the water droplet holding portion, it is ensured that the air flow is allowed to pass through the hole 2c.
At this time, the lower end portion 2 k of the rasmine 2 is disposed on the front heat exchanger 8 a that transmits the condensed water of the front upper heat exchanger 8 b above the front drain pan 6.

FIG. 4 is an enlarged cross-sectional view of the upper front heat exchanger 8b and the vicinity of the rasmic 2 showing a method of attaching the rasmic 2.
In order to prevent the condensed water from falling in the form of water droplets, the space between the front upper heat exchanger 8 b and the rasmite 2 is sized so that there is no space for the condensed water to grow into water droplets.
Therefore, the condensed water flowing from the front upper heat exchanger 8b is not dropped from the holes 2c by eliminating or reducing the dimension s1 of the gap 11 between the front upper heat exchanger 8b and the rasmine 2 shown in FIG. The dimension s1 is equal to or less than the dimension at which the condensed water bridges before the condensed water becomes water droplets.
On the other hand, when the dimension s1 of the gap 11 is large, when condensed water drips from the front upper heat exchanger 8, water droplets may be formed, and the droplets may pass through the holes 2c of the rasami 2 by force of falling.

FIG. 5 is a view showing the size of the hole 2 c of the rasmine 2.
The hole 2c of the rasmite 2c has a diamond shape. "A" and "b" shown in FIG. 5 respectively indicate the dimension a in the short direction of the diagonal of the hole 2c in the diamond shape and the dimension b in the long direction of the diagonal.
Table 1 is a table in which it was evaluated whether condensed water was dropped from rasmite 2 in the state shown in FIG. In four types of rasamids A to D of combinations of dimensions a and b, combinations in which condensed water is dropped are indicated as “x”, and combinations in which condensed water is not dropped are indicated as “o”.

From Table 1, Ras A is a = 1.75 mm, b = 4.02 mm, and “x” to which condensed water was dropped.
Rasami B was a = 1.69 mm, b = 3.83 mm, and “x” to which condensed water was dropped.
Rasami C has a = 1.64 mm and b = 2.79 mm, and no condensation water is dropped.
Ras Amy D is a = 1.49 mm, b = 2.53 mm, and the condensed water is not dropped “○”.

Here, it is considered that the water drop is retained by the surface tension, if the hole 2c is small, stays in the rasmine 2c, and if the hole 2c is large, it drops through the hole 2c of the rasmy 2c.
From the results in Table 1, in the state shown in FIG. 4, if the dimension b in the long direction of the diagonal is 3 mm or less, the condensed water does not drip from the hole 2 c even if there is an influence by gravity and negative pressure by the fan. That was confirmed. Therefore, condensed water can be received by setting the dimensions a and b of the rasmine 2c to 3 mm or less.
Unlike in FIG. 2, the direction 2b (see FIGS. 3C and 3D) in which the hole 2c of Rasami 2 can be seen is along the direction w1 in which the condensed water dripping from the front upper heat exchanger 8b flows. When Rasami 2 was disposed below the front upper heat exchanger 8b, it was confirmed that condensed water dropped from the holes 2c in all Rasami AD.

With regard to the shape of rasmine 2, there is a conventional example of the shape of the amy shape of Patent Document 1 in which a linear shape is provided to facilitate flowing of condensed water.
On the other hand, since Rasami 2 of the present embodiment is a collection of diamond-shaped holes 2c, the size of the holes is uniform and the increase in ventilation resistance can be suppressed. On the other hand, if the ventilation resistance is uneven, the efficiency of the air conditioner C is reduced.

Furthermore, since there is no need for extra processing of rasmine 2, the number of manufacturing steps is small and the production cost is low. In addition, since the rasmine 2 has a large number of holes 2c, the air volume reduction of the air conditioner C and the variation of the air volume can be suppressed.
In addition, it is possible to suppress the variation of Rasami 2 single product. In addition, inexpensive Rasumi 2 can be used.

<How to install Rasami 2>
Next, a method of attaching rasmine 2 to front upper heat exchanger 8b will be described.
FIG. 6 is an enlarged perspective view showing the vicinity of the front upper heat exchanger 8b from the diagonally lower right side, showing a fixing method of the comparative example.
In the conventional fixing method, it is necessary to provide a mounting hole 3a for inserting the fixing member 3 into the mounting member 20 as in the fixing member 3 of FIG. 6 of the comparative example. However, in the conventional mounting method, the mounting member 20 is mounted on the downwind side of the air flow of the front upper heat exchanger 8b and in the downward direction of gravity. Therefore, the condensed water which has flowed into the gap between the front upper heat exchanger 8 b and the mounting member 20 is dropped along the mounting hole 3 a of the mounting member 20 and the fixing member 3. In addition, in the conventional fixing method, the operation of fixing the mounting member 20 takes time.

So, in this embodiment, it is attached with the thin attachment member (spring 9, 10) of a filament material, for example, a spring material, as a method which does not require the hole 3a and is easy to attach the rasmic 2 to the front upper heat exchanger 8b. .
Fig.7 (a) is a figure which shows the spring 9 of the example of the attachment member of embodiment, FIG.7 (b) is I direction arrow line view of Fig.7 (a).
As a mounting member, a spring 9 having a shape fixed to the inside of a pipe 8p (refrigerant pipe) shown in FIG. 4 is used.

The spring 9 is, for example, a spring material. The spring 9 has a pair of attachment recesses 9a and a pair of linear attachment portions 9b.
As shown in FIG. 4, the pair of mounting recesses 9a of the spring 9 is fitted to the inside of the pipe 8p of the front upper heat exchanger 8b, and the spring 8 is expanded outward by the elastic force of the pipe 8p of the front upper heat exchanger 8b. Secure inside of Then, the pair of amy attachment parts 9b of the spring 9 are respectively inserted into the holes 2c of the rasmi 2 and bent to the rasami 2 side (arrow β1 in FIG. 4) to fix the rasami 2 to the front upper heat exchanger 8b.

Fig.8 (a) is a figure which shows the spring 10 of the other example of the attachment member of embodiment, FIG.8 (b) is II direction arrow line view of Fig.8 (a).
As another example of the mounting member, a spring 10 having a shape fixed to the outside of the pipe 8p shown in FIG. 4 is used.

  The spring 10 is, for example, a spring material. The spring 10 has a pair of amy attachment parts 10a in which the recessed part 10a1 is formed, and a bridge-like ami attachment part 10b which spans a pair of the ami attachment parts 10a.

As shown in FIG. 4, a pair of amy attachment parts 10a are inserted into the holes 2c of the rasmi 2, and the recess 10a1 is engaged with the outside of the pipe 8p of the front upper heat exchanger 8b and engaged by the elastic force applied inside. Do. Then, while holding between the holes 2c and the holes 2c of the rasmite 2 by the amy attachment part 10b, the rasami 2 is attached to the outside of the pipe 8p of the front upper heat exchanger 8b.
In addition, although the case where both the springs 9 and 10 are used is illustrated in FIG. 4, it is needless to say that only the spring 9 or the spring 10 may be used.

  As described above, by using the spring 9 having a fixed shape inside the pipe 8p and / or the spring 10 fixed on the outside of the pipe 8p as a mounting member, it is easy to make the rasmic 2 into the front upper heat exchanger 8b It can be fixed to

  By fixing the spring members 9 and 10 of the wire members to the front upper heat exchanger 8b and the rasmic 2, respectively, it is possible to have a structure without leaving the mounting holes 3a for fixing the mounting member 3 to the rasmic 2. The spring members 9 and 10 use a stainless steel which does not generate rust.

The rasmine 2 is made of a lightweight, soft, and easily processable aluminum material, and is made of the same material as the aluminum fin 8f of the front upper heat exchanger 8b. Since Rasami 2 and Fin 8f are made of the same material, the ionization tendency is the same, no current flows and no corrosion occurs. As a result, a combination of the fins 8f, the rasmine 2, and the fixing springs 9, 10 is not corroded.
Furthermore, as a fixing member, a method using a thin thread-like member instead of the springs 9 and 10 is also possible.

According to the above configuration, the water drop holding portion Rasami 2 is disposed downstream of the front upper heat exchanger 8b. The water droplet holder can hold the condensed water of the front upper heat exchanger 8b.
On the downstream side of the front upper heat exchanger 8b, there is no hole for fixing to hold the condensed water, and by adding rasami 2 having dimensions b and a of 3 mm or less, the front upper part having reduced hydrophilicity The condensed water falling from the fins 8 f of the heat exchanger 8 b can be reliably held by the rasmic 2. Then, the condensed water received by Rasumi 2 is led to the front drain pan 6. Further, the attachment members of the rasmine 2 are used as the inexpensive wire members springs 9 and 10 which can suppress a reduction in air volume and have good attachment workability.

  Also, even with the arrangement of Ras Amy 2 that does not fix condensed water that flows down from the front upper heat exchanger 8b that has reduced hydrophilicity to the front drain pan 6, the Ras Ami 2 directly or before the front drain pan 6 at the desired position. It can be made to flow through the part heat exchanger 8a.

Also, in order to securely attach Rasami 2 to the downwind side of the front upper heat exchanger 8b, attach the springs 9, 10 of another thin metal fixing member to the Rasami 2 and the front upper heat exchanger 8b. Make it not convex from the surface. Moreover, the attachment hole for fixing an attachment member to Rasami 2 is not provided. Therefore, the event that the condensed water falls from the mounting hole can be eliminated.
In addition, the work of attaching the rasmine 2 to the front upper heat exchanger 8b by the springs 9, 10 is easy.
And since dimensions b and a of rasmine 2 are respectively 3 mm or less, it can be considered as a structure which does not let condensed water fall along springs 9 and 10 of an attachment member.

  Therefore, the air conditioner C which can suppress the dripping of the condensed water from the front upper heat exchanger 8b can be realized by attaching the rasmic 2 to the downstream side of the front upper heat exchanger 8b.

  The present invention is also effective when attached to the upstream side of the heat exchanger 8. In addition, it is also effective as a response to water splashing during heating operation of heat exchange of an indoor unit having a ceiling cassette type or a wall-filling type, or an outdoor unit.

<< Other Embodiments >>
1. In the above-described embodiment, the Rasami 2 has been exemplified as the water droplet holding portion, but if it is an amy material having a direction in which a hole is formed and water droplets do not penetrate and fall when condensed water is dropped, Rasami 2 It is also possible to use an ami wood other than. The water droplet holding portion is a member having a direction in which the hole can not be seen, and the water droplet holding portion is the upper surface thereof, and the direction 2a in which the hole can not be seen is along the direction w1 in which the condensed water of the front upper heat exchanger 8b flows By arranging in the other direction, the condensed water can be received by the ami member and can be led to the front drain pan 6.

2. Although the case where springs 9 and 10 were used as a line member which fixes Rasami 2 to front upper heat exchanger 8b was explained in the above-mentioned embodiment, metal wires other than a spring, resin wire, fiber wire (yarn), thin rubber Wire members other than springs may be used. Also in this case, the same effect as the springs 9 and 10 is exerted.

3. The embodiment and the like describe an example of the present invention described in the claims, and various modifications and concrete forms are possible within the scope described in the claims.

1f outlet 1s inlet 2 Rasami (water drop holder, Ami member)
2a Hole can not be seen 2c Hole 4 Cross-flow fan (fan)
8 Heat Exchanger 8a Front Heat Exchanger 8b Front Upper Heat Exchanger 8f Fin 9 Spring (Spring Material, Wire Member)
10 Spring (spring material, wire member)
C Air conditioner k Casing w1 Direction of flow of condensed water

Claims (9)

And
A fan disposed in the housing;
And a heat exchanger disposed near the fan,
The housing has an inlet for indoor air at the top, and an outlet at the lower front for blowing out the air being air conditioned,
The heat exchanger has a front heat exchanger and a front upper heat exchanger,
An air conditioner characterized in that a water droplet holder is installed downstream of the front upper heat exchanger. The water droplet holder is
Ami member having a direction in which the hole can not be seen when viewed obliquely
The water droplet holder is
The air conditioner according to claim 1, wherein the air conditioner is an upper surface thereof and a direction in which the hole can not be seen is in a direction along which the condensed water of the front upper heat exchanger flows. The air conditioner according to claim 1, wherein the water droplet holder is rasmite, and the size of the hole in the longitudinal direction is 3 mm or less. The water drop holder is rasami,
The water droplet holder is
The air conditioner according to claim 1, wherein the air conditioner is an upper surface thereof and a direction in which the hole can not be seen is in a direction along which the condensed water of the front upper heat exchanger flows. The water drop holder is rasami,
The air conditioner according to claim 1, wherein the rasamid is attached to the front upper heat exchanger without providing a mounting hole. The water drop holder is rasami,
The air conditioner according to claim 1, wherein the rasamid and the fins of the front upper heat exchanger are made of the same material. The water drop holder is rasami,
The air conditioner according to claim 1, wherein the rasmite and the fins of the front upper heat exchanger are made of aluminum. The water drop holder is rasami,
The rasmite and the fins of the front upper heat exchanger are made of the same material,
The air conditioner according to claim 1, wherein the rasamid is attached to the front upper heat exchanger by passing a stainless steel spring material through the hole. The water droplet holding portion is an abrasive member having a direction in which the hole can not be seen,
The awning member and the fins of the front upper heat exchanger are made of the same material,
The air conditioner according to claim 1, wherein the mesh member is attached to the front upper heat exchanger by passing a filament member through the hole.