JP3063743B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to a drain treatment structure in an air conditioner.

[0002]

2. Description of the Related Art For example, in the case of a floor-standing type air conditioner, a blower and a heat exchanger are disposed in a vertically long rectangular parallelepiped casing, and indoor air sucked from a suction grill provided on a front surface of the casing. Is cooled or heated by the heat exchanger, and the conditioned air is blown into the room from a blowout grill provided on the front surface of the casing.

[0003] By the way, in the air conditioner having the above configuration, a drain pan for receiving drain from the heat exchanger is provided, but the drain adheres to the refrigerant pipe connected to the heat exchanger. Because the drain flows down along the refrigerant pipe and falls downward from the bent portion of the refrigerant pipe,
The treatment of the drain is required.

[0004] As a method of treating the drain, there is a method in which the middle of the refrigerant pipe is bent in a substantially U shape to take a trap, or a small drain pan is provided in the middle of the refrigerant pipe, and the drain accumulated in the drain pan is subjected to heat exchange. A method of pouring into a dexterous drain pan is known.

[0005]

In the former method, however, it is easy to take a trap because the liquid refrigerant pipe has a small pipe diameter, but it is difficult to take a trap because the gas refrigerant pipe has a large pipe diameter. Since a large curvature is required, a trap may not be formed depending on the arrangement position of the heat exchanger and the size of the drain pan. In the case of the latter method, it is necessary to provide a small drain pan in the middle of the refrigerant pipe,
A space for installing the drain pan is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a drainage member in the middle of a refrigerant pipe so that the drain flowing down along the refrigerant pipe can be drained with a simple configuration. The purpose is to do so.

[0007]

Means for Solving the Problems As means for solving the above-mentioned problems, there is provided a blower 2 and a heat exchanger 3, and the heat exchanger 3 is provided at a position below the heat exchanger 3. In the air conditioner provided with the drain pan 13 for receiving the drain of the above, the drain flowing down along the refrigerant pipe is blocked in a portion of the refrigerant pipe connected to the heat exchanger 3 located above the drain pan 13. Ru provided draining member 17 for dropping to the drain pan 13 Te
At the same time, the refrigerant is
A slit 25 is provided so as to be inserted into the pipe .

With the above construction, the drain flowing down along the refrigerant pipe is blocked by the draining member 17 and then the drain pan 13 located below the heat exchanger 3.
Will be dropped. Therefore, the drain treatment can be performed with a simple configuration in which the draining member 17 is provided in the refrigerant pipe without taking up a trap space. Moreover, it is fitted into the refrigerant pipe with the slit 25 opened.
As a result, the draining member 17 is exchanged with heat.
To be installed after the assembly of the refrigerant pipe to the vessel 3 is completed
And the draining member 17 is heated when brazing.
Problems such as deformation under the influence are eliminated.

[0009] As in the second aspect of the present invention, the draining member 17 is connected to the cylindrical portion 18 which is inserted into the refrigerant pipe.
And a drainage flange 19 formed on the outer periphery of the cylindrical portion 18
In such a case, the drain flowing down along the refrigerant pipe is blocked by the cylindrical portion 18 and falls from the drainage flange 19 to the drain pan 13 below, so that the drain can be drained in a small occupied space. it can.

As in the third aspect of the present invention, when a second drainage flange portion 20 located above the drainage flange portion 19 is formed on the outer periphery of the cylindrical portion 18, it flows down along the refrigerant pipe. The drain is stopped by the cylindrical portion 18, and then falls to the drain pan 13 below via the two drainage flanges 20 and 19, so that drainage of the drain can be performed more reliably.

As in the invention of claim 4, between the pair of drainage flanges 19, 20 is formed as an annular groove 21 for winding a fastener 22 for fixing the drainage member 17 to the refrigerant pipe. When used, drainage collar 1
The annular groove 21 formed between the parts 9 and 20 can be effectively used, and the structure can be further simplified.

A circular recess 23 is formed in the upper surface of the cylindrical portion 18 and the circular recess 2 is formed.
In the case where a plurality of radial ribs 24 are formed in 3, when the drain flowing down along the refrigerant pipe is blocked by the cylindrical portion 18, it may try to turn due to the surrounding pressure. The presence of the ribs 24 suppresses the turning force, so that the drain can be smoothly dropped.

As in the invention of claim 6, when the portion where the drainage member 17 is provided in the refrigerant pipe is an inclined portion which is inclined obliquely downward, the drainage member 17 is also attached in an inclined state. Thus, the directionality of the drain falling from the draining member 17 can be specified.

When the refrigerant pipe is a gas refrigerant pipe 15 as in the invention of claim 7, even if the gas refrigerant pipe 15 has a large diameter and is difficult to trap, it can be easily drained. Can be.

[0015]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, this air conditioner has a blower 2 in a vertically long rectangular parallelepiped casing 1.
And a heat exchanger 3, and conditioned air W ′ obtained by cooling or heating room air W sucked from a suction grill 4 provided at a lower portion of the front surface of the casing 1 by the heat exchanger 2. The air conditioner is a floor-mounted air conditioner configured to blow air into a room from a blow grill 5 provided at an upper part of the front surface of the casing 1.

The blower 2 is a centrifugal blower in which a multi-blade impeller 8 is covered by a scroll-type fan casing 9, and is provided in a blower room 6 formed inside the suction grill 4. The suction port 10 is arranged in a posture facing forward. And the discharge port 11 of the blower 2 is
The casing 1 faces the heat exchanger chamber 7 through a partition plate 12 that partitions the inside of the casing 1 into the blower chamber 6 and a heat exchanger chamber 7 located above the blower chamber 6.

The heat exchanger 3 is disposed so as to partition the inside of the heat exchanger chamber 7 back and forth, with the upper end located rearward, and the lower end inclined forward. A drain pan 13 for receiving drain from the heat exchanger 3 is provided at a position below the vessel 3. The drain pan 1
Reference numeral 3 is provided so as to correspond to the lower end of the heat exchanger 3.

A liquid refrigerant pipe 14 and a gas refrigerant pipe 15 are connected to the heat exchanger 3. In the liquid refrigerant pipe 14, a trap portion 14a bent in a substantially U-shape is formed on the front side of the heat exchanger 3. The trap portion 14a is for dropping the drain adhering to the liquid refrigerant pipe 14 and flowing down along the liquid refrigerant pipe 14 downward, and the dropped drain is supplied to the drain pan 13 along the heat exchanger 3. It is to flow down toward. The trap portion 14 in the liquid refrigerant pipe 14
The portion below a is covered with a heat insulating material 16 for preventing the adhesion of drain.

On the other hand, the gas refrigerant pipe 15 is formed with an inclined portion 15a which is located above the drain pan 13 and which is inclined obliquely downward. The inclined portion 15a has a drainage member 17 which will be described in detail later. Is attached.

The draining member 17 is an integrally molded product made of heat-resistant rubber (for example, chloroprene). As shown in FIGS.
5 and a pair of drainage flanges 19 and 20 integrally formed on the outer periphery of the cylindrical portion 18. The drainage flange 19 is formed integrally with one end of the cylindrical portion 18 (that is, at the lower end in the mounted state), while the drainage flange 20 is formed.
Is formed integrally at a position away from the drainage flange 19 by a predetermined distance, and the drainage flange 19 has a large diameter.
The drainage flange 20 has a small diameter. A space between these drainage flanges 19 and 20 is used as an annular groove 21 around which a fastener 22 for fixing the drainage member 17 to the gas refrigerant pipe 15 is wound.

A circular recess 23 is formed on the upper surface of the cylindrical portion 18, and a large number of radial ribs 24 are integrally formed in the circular recess 23.
Note that a slit 25 is formed in the cylindrical portion 18, and the cylindrical portion 18 is inserted into the gas refrigerant pipe 15 with the slit 25 opened. In this manner, the draining member 17 can be attached after the assembly of the refrigerant pipe to the heat exchanger 3 is completed, and the draining member 17 can be attached.
However, there is no defect such as deformation due to heat influence at the time of brazing.

A plurality of annular ribs 26 are integrally formed on the inner peripheral surface of the cylindrical portion 18 to increase the surface pressure when tightening by the fastener 22.
Reference numeral 27 denotes a heat insulating material that covers a portion of the gas refrigerant pipe 15 below a portion where the draining member 17 is attached in order to prevent adhesion of drain.

In the air conditioner configured as described above, the following operational effects can be obtained.

When the air conditioner is operated for cooling, drain is generated not only in the heat exchanger 3 but also in the liquid refrigerant pipe 14 and the gas refrigerant pipe 15.

The drain generated in the heat exchanger 3 flows down along the heat exchanger 3 and falls into a drain pan 13.
The drain adhering to the liquid refrigerant pipe 14 is trapped in the trap portion 14a.
, Falls down toward the heat exchanger 3, flows down along the heat exchanger 3, and falls into the drain pan 13.

On the other hand, in the process of flowing down along the gas refrigerant pipe 15, the drain D adhering to the gas refrigerant pipe 15 is blocked by the draining member 17 attached to the inclined portion 15a and then located below. It falls into the drain pan 13 (see FIG. 3). Therefore, the drain treatment can be performed with a simple configuration in which the draining member 17 is provided in the gas refrigerant pipe 15 without taking up a trap space.

Incidentally, in the present embodiment, the draining member 17 is connected to the cylindrical portion 1 inserted into the gas refrigerant pipe 15.
8 and a pair of drainage flanges 19 and 20 formed integrally on the outer periphery of the cylindrical portion 18, so that the drain D flowing down along the gas refrigerant pipe 15 is
, And then falls to the lower drain pan 13 via the two drainage flanges 19 and 20, so that drainage of the drain D can be performed more reliably. In addition, since the water draining member 17 is attached to the inclined portion 15a of the gas refrigerant pipe 15, the water draining member 17 is also attached in an inclined state, and the direction of the drain D falling from the water draining member 17 can be specified. As a result, the drain D can be guided to the drain pan 13 more reliably. In addition, since the upper water drainage flange 20 has a small diameter and the lower water drainage flange 19 has a large diameter, the drain D that has fallen from the upper water drainage flange 20 has a small diameter.
Is reliably received by the lower drainage flange 19, and the drain D is guided to the drain pan 13 reliably. Therefore, it is possible to reduce the size of the drain pan 13 in the front-rear direction.

Further, in the present embodiment, a circular concave portion 23 is formed on the upper surface of the cylindrical portion 18 of the draining member 17, and a plurality of radial ribs 24 are formed in the circular concave portion 23.
Is formed, when the drain D flowing down along the gas refrigerant pipe 15 is blocked by the cylindrical portion 18, the drain D may turn and try to rise due to the surrounding pressure relationship. , 24..., The turning force is suppressed, and the drain D can be smoothly dropped.

It is needless to say that the draining member 17 is also effective when attached to the liquid refrigerant pipe 14.

In the above description, the floor-mounted type air conditioner is taken as an example, but the present invention can of course be applied to other types of air conditioners.

[0032]

According to the first aspect of the present invention, the air is provided with the blower 2 and the heat exchanger 3, and the drain pan 13 for receiving the drain from the heat exchanger 3 is provided below the heat exchanger 3. In the harmony machine, a drain member 17 for blocking a drain flowing down along the refrigerant pipe and dropping it to the drain pan 13 in a portion of the refrigerant pipe connected to the heat exchanger 3 located above the drain pan 13 <br/> the provided Rutotomoni, the water cutting member 17, previously in the open state
Since the slit 25 is provided so as to be inserted into the refrigerant pipe , the draining member 17 can be provided without taking up a trap space.
The drain treatment can be performed with a simple configuration in which the refrigerant is provided in the refrigerant pipe, and there is an effect that both downsizing of the product and securing of reliability of drain recovery can be achieved.

In addition, with the slit 25 opened, the refrigerant
The draining member 17 can be inserted into the pipe.
After the assembly of the refrigerant pipe to the heat exchanger 3 is completed
And the draining member 17 is brazed
When there is no longer any problem such as deformation due to the influence of heat
There is also an effect.

As in the second aspect of the present invention, the draining member 17 is connected to the cylindrical portion 18 which is inserted into the refrigerant pipe.
And a drainage flange 19 formed on the outer periphery of the cylindrical portion 18
In such a case, the drain flowing down along the refrigerant pipe is blocked by the cylindrical portion 18 and falls from the drainage flange 19 to the drain pan 13 below, so that the drain can be drained in a small occupied space. it can.

As in the third aspect of the present invention, when a second drainage flange 20 located above the drainage flange 19 is formed on the outer periphery of the cylindrical portion 18, it flows down along the refrigerant pipe. The drain is stopped by the cylindrical portion 18, and then falls to the drain pan 13 below via the two drainage flanges 20 and 19, so that drainage of the drain can be performed more reliably.

As in the fourth aspect of the present invention, an annular groove 21 for winding a fastener 22 for fixing the draining member 17 to the refrigerant pipe is provided between the pair of drainage flanges 19 and 20. When used, drainage collar 1
The annular groove 21 formed between the parts 9 and 20 can be effectively used, and the structure can be further simplified.

According to a fifth aspect of the present invention, a circular recess 23 is formed on the upper surface of the cylindrical portion 18 and the circular recess 2 is formed.
In the case where a plurality of radial ribs 24 are formed in 3, when the drain flowing down along the refrigerant pipe is blocked by the cylindrical portion 18, it may try to turn due to the surrounding pressure. The presence of the ribs 24 suppresses the turning force, so that the drain can be smoothly dropped.

As in the invention of claim 6, when the portion of the refrigerant pipe where the drainage member 17 is provided is an inclined portion which is inclined obliquely downward, the drainage member 17 is also attached in an inclined state. Thus, the directionality of the drain falling from the draining member 17 can be specified.

When the refrigerant pipe is a gas refrigerant pipe 15 as in the invention of claim 7, the drain treatment can be easily performed even with a large-diameter gas refrigerant pipe 15 which is difficult to trap. Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a front view illustrating a part of the inside of the air conditioner according to the embodiment of the present invention.

FIG. 3 is an enlarged side view of a draining member mounting portion in the air conditioner according to the embodiment of the present invention.

FIG. 4 is a half sectional view of a water draining member in the air conditioner according to the embodiment of the present invention.

FIG. 5 is a plan view of a drainer in the air conditioner according to the embodiment of the present invention.

[Explanation of References] 2 is a blower, 3 is a heat exchanger, 13 is a drain pan, 14 is a refrigerant pipe (liquid refrigerant pipe), 15 is a refrigerant pipe (gas refrigerant pipe), 15a is an inclined portion, 17 is a drain member, 18 Is a cylindrical portion, 19 is a draining flange, 20 is a second draining flange,
21 is an annular groove, 22 is a fastener, 23 is a circular recess, 24 is a rib, and 25 is a slit.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 62-62120 (JP, U) Japanese Utility Model Hei 6-51728 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 361

Claims (7)

(57) [Claims] 1. A drain pan (13) provided with a blower (2) and a heat exchanger (3), and disposed below the heat exchanger (3) to receive drain from the heat exchanger (3). An air conditioner comprising: a portion of a refrigerant pipe connected to the heat exchanger (3) which is located above the drain pan (13); the provided drain pan flashing member for dropping into (13) (17) Rutotomoni, water cutting portion
The material (17) is inserted into the refrigerant pipe in an open state.
An air conditioner characterized by having a slit (25) . 2. The draining member (17) includes a cylindrical portion (18) fitted into the refrigerant pipe, and a draining flange (19) formed on the outer periphery of the cylindrical portion (18). The air conditioner according to claim 1, wherein: 3. The draining flange (20) located above the draining flange (19) is formed on the outer periphery of the cylindrical portion (18). 2. The air conditioner according to 2. 4. A fastener (22) for fixing the drainage member (17) to the refrigerant pipe between the drainage flange (19) and the second drainage flange (20). The air conditioner according to claim 3, wherein the air conditioner is used as an annular groove (21) for winding. 5. A circular recess (23) is formed on the upper surface of the cylindrical portion (18), and a plurality of radial ribs (24) are formed in the circular recess (23). The air conditioner according to any one of claims 2 to 4, wherein: 6. The cooling pipe according to claim 1, wherein a portion of the refrigerant pipe where the draining member (17) is provided is an inclined portion inclined obliquely downward. Item. 7. A refrigerant pipe (1) for a gas refrigerant.
The air conditioner according to any one of claims 1 to 6, wherein (5) is set.