JP2003074890A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which can raise efficiency in configuration of parts and also can increase the area of heat exchange in the heat exchanger by making effective use of the dead space of a front heat exchanger part constituting a heat exchanger in the shape of a reverse V. SOLUTION: In the air conditioner which possesses the main body 1 of itself for accommodating a heat exchanger 9, the above heat exchanger possesses a main heat exchanger 20 which consists of a front heat exchanger part 21 curved in side view and a straight rear heat exchanger part 22 and is made in the shape of a reverse V by bending the tops of these front heat exchanger and rear heat exchanger, a first auxiliary heat exchanger 31 which is arranged along the topside of the rear heat exchanger part of this main heat exchanger, and a second auxiliary heat exchanger part which is arranged along the front top of the front heat exchanger part and leads to the front heat exchanger part via a pipe.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner composed of an indoor unit and an outdoor unit, and more particularly to a heat exchanger housed in the indoor unit.

[0002]

2. Description of the Related Art An air conditioner composed of an indoor unit and an outdoor unit is widely used. In the indoor unit, the main body is provided with a suction port and a blowout port, and a heat exchanger, a blower and the like are housed inside the main unit.

As the above-mentioned heat exchanger, those having various structures have been developed and actually provided, but recently, there is a tendency that a heat exchanger formed in a substantially inverted V shape is frequently used. this is,
It is composed of a combination of a front side heat exchanger section whose side view is curved and a rear side heat exchanger section which is straight and obliquely inclined.

With this type of heat exchanger, the heat exchange area is dramatically increased as compared with a simple flat plate heat exchanger, and the molding process is easier than the heat exchanger formed by bending in multiple stages. OK.

[0006] A blower is arranged between the front heat exchanger and the rear heat exchanger, and the front and rear heat exchangers cover the blower like an umbrella to effectively use the space in the main body. The body can be made smaller.

Further, in order to obtain multiple functions as an air conditioner, one provided with an electric dust collector is provided. The above-mentioned electric dust collector completely removes dust that cannot be captured by the filter arranged at the suction port of the main body to purify heat exchange air.

This electrostatic precipitator is arranged at a position facing the suction port through the filter. That is, it is mounted between the front side heat exchanger part and the suction port which constitute the heat exchanger, and is actually attached to the front side of the front side heat exchanger part.

[0008]

By the way, the heat exchanger is designed to have a size determined by the cooling / heating capacity of the air conditioner, while the electric dust collector for cleaning the indoor air is about half. Capacity.

As described above, the front heat exchanger portion is curved in a side view, and the electrostatic precipitator is attached to a substantially central portion in the vertical direction. In other words, on the front surface side of the front heat exchanger unit, the upper part and the lower part of the electrostatic precipitator are dead spaces corresponding to the thickness of the electrostatic precipitator.

The present invention has been made in view of the above circumstances, and an object of the present invention is to effectively utilize the dead space of the front side heat exchanger portion which constitutes a substantially inverted V-shaped heat exchanger, and It is intended to provide an air conditioner in which the efficiency of arrangement and configuration is increased and the heat exchange area of the heat exchanger is increased.

[0011]

In order to satisfy the above object, as a first means of the present invention, in an air conditioner having an air conditioner main body for accommodating a heat exchanger, the heat exchanger has a side view. A front heat exchanger portion and a straight rear heat exchanger portion, which are curved in a curved shape, and the upper end portions of the front heat exchanger portion and the rear heat exchanger portion are bent to each other to form a substantially inverted V shape. A main heat exchanger formed on the first heat exchanger, a first auxiliary heat exchanger portion arranged along the upper surface of the rear heat exchanger portion of the main heat exchanger, and a front upper portion of the front heat exchanger portion. Placed along
The front side heat exchanger part was equipped with the 2nd auxiliary heat exchanger part connected through a piping.

As a second means, in an air conditioner equipped with an air conditioner main body for accommodating a heat exchanger, the heat exchanger has a front heat exchanger portion curved in a side view and a straight rear heat exchanger portion. A main heat exchanger, which is composed of a side heat exchanger part, and whose upper end portions are front and rear heat exchanger parts are bent to each other and formed into a substantially inverted V shape. 1 auxiliary heat exchanger part and 2nd auxiliary heat exchanger part, The said 1st auxiliary heat exchanger part is arrange | positioned along the said rear side heat exchanger part upper surface, The said 2nd auxiliary heat exchanger part is arrange | positioned. The heat exchanger part has a sub heat exchanger arranged along the upper part of the front surface of the front heat exchanger part.

As a third means, the sub heat exchanger is
The space between the first auxiliary heat exchanger part and the second auxiliary heat exchanger part is bent to cover the upper end bent parts of the front heat exchanger part and the rear heat exchanger part.

As a fourth means, the first auxiliary heat exchanger section and the second auxiliary heat exchanger section are attached and fixed to the air conditioner main body through a holding fixture.

According to a fifth means, the holding fixture is provided at both ends with mounting portions to be mounted on the main body of the air conditioner, and the first auxiliary heat exchanger portion and the second auxiliary heat exchanger portion are provided between these mounting portions. A restraining portion for restraining the auxiliary heat exchanger portion is formed, and the mounting portion and the restraining portion are formed by shifting their positions in a crank shape.

As a sixth means, the front side heat exchanger section and the second auxiliary heat exchanger section are connected using a standardized U-bend of a general-purpose product.

By adopting the means for solving such a problem, the dead space in the front upper part of the front side heat exchanger portion constituting the substantially inverted V-shaped heat exchanger is effectively utilized, and the component arrangement configuration is realized. The efficiency is increased and the heat exchange area in the heat exchanger is increased.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a cross section of an indoor unit that constitutes an air conditioner.

In the figure, reference numeral 1 denotes a unit main body (air conditioner main body), an upper suction port 2 is provided on the upper surface of the unit main body 1, and a front suction port 3 is provided on the front surface. The front suction port 3 can be opened and closed by a movable panel 6 supported by an opening / closing drive mechanism 5.

An outlet 7 is provided along the lower part of the front inlet 3.
Is provided, and the outlet 7 can be opened and closed by two outlet louvers 8A and 8B whose rotations are controlled separately.

A heat exchanger 9 described later is arranged in the unit main body 1. An electric dust collector 10 is attached to the front surface of the heat exchanger 9. The electrostatic precipitator 10 is composed of a charging side electrode and a dust collecting side electrode, and the charging side electrode gives an electric charge to dust in the air, and then attracts the charged dust at the dust collecting side electrode, It is designed to remove dust.

A blower 11 is arranged so as to be covered by the heat exchanger 9. The blower 11 has an axial dimension substantially the same as the width dimension of the heat exchanger 9, and is composed of a cross-flow fan arranged to face the heat exchanger 9 and a fan motor for rotationally driving the cross-flow fan. To be done.

The lower end on the front side of the heat exchanger 9 is placed on the front drain pan 12A, and the lower end on the rear side is on the rear drain pan 12A.
It is on B. Drain water generated in the heat exchanger flows down into these drain pans, is collected in the rear drain pan, and can be drained to the outside via a drain hose (not shown).

The outer surfaces of the side walls of the front and rear drain pans 12A and 12B are provided in the vicinity of the blower 11 to form a nose for the fan of the blower 11.

Front and rear drain pans 12A constituting the nose,
A partition wall member 13 connects the side wall portion of 12B and each side portion of the blowout port 7. A space surrounded by the partition wall member 13 serves as a blowout air passage 14 that connects the nose and the blowout opening 7.

On the other hand, a filter 15 is attached between the front suction port 3 and the upper suction port 2 and between the suction ports 3 and 2 and the front surface of the heat exchanger 9. This filter 15
Is guided along a rail-shaped filter guide frame 15a vertically provided on the back side of the unit body 1 and is detachable from the body 1 as necessary.

Next, the heat exchanger 9 will be described in detail. This heat exchanger 9 is composed of a combination of a main heat exchanger 20 formed in a substantially inverted V shape in a side view and a sub heat exchanger 30 arranged along the main heat exchanger 20. Become.

First, the main heat exchanger 20 is formed as a heat exchanger in which a portion curved in an arc shape and a straight portion are integrated with each other. Notches are provided at the connecting portions between the curved formed portions and the straight portions, and the actual connecting portions are very few. By bending the curved portion or the straight portion at a predetermined angle with this connecting portion as a boundary, the curved portion or the straight portion is formed into a substantially inverted V shape.

With the main heat exchanger 20 assembled in the unit main body 1, since the curved component is located on the front side, this part is called the front heat exchanger part 21,
The straight portion located at the rear of the rear heat exchanger portion 22
Call. The front heat exchanger portion 21 faces the front suction port 3, and the rear heat exchanger portion 22 faces the upper suction port 2 in an inclined rearward direction.

On the other hand, the sub heat exchanger 30 is a first heat exchanger which is arranged on the upper surface of the rear heat exchanger portion 22 with a narrow gap.
Auxiliary heat exchanger part 31 and the second auxiliary heat exchanger part 3 arranged with a narrow gap in front of the upper end of the front heat exchanger part.
2 and.

The first auxiliary heat exchanger portion 31 is formed to have the same width and length dimensions as the width and length directions of the upper surface of the rear heat exchanger portion 22. The second auxiliary heat exchanger portion 32 is formed to have the same width direction dimension as the width direction of the front heat exchanger portion 21. The vertical dimension is the upper end of the electrostatic precipitator 10 attached to the front surface of the front heat exchanger portion 21,
It is formed within a range that can be arranged between the upper end of the front heat exchanger portion 21 and the upper end.

In other words, the second auxiliary heat exchanger section 32
Is disposed on the front side of the front heat exchanger portion 21 by utilizing the space above the electrostatic precipitator 10, and the space is effectively utilized.

In both the main heat exchanger 20 and the sub heat exchanger 30, a large number of fins F arranged in parallel with a narrow gap between each other, and heat that penetrates these fins and is fitted by a pipe expanding means. It is a so-called find tube type equipped with an exchange pipe P.

FIG. 2 schematically shows a piping system in the heat exchanger 9. In the main heat exchanger 20, two rows of heat exchange pipes P are arranged in front and back along the longitudinal direction of the front side heat exchanger 21 and the rear side heat exchanger 22, and the rows are arranged with a certain distance therebetween. At the same time, the rows are provided so that their positions are staggered.

The heat exchange pipe P is a U-shaped pipe whose straight portion has the same length as the width direction of the juxtaposed fins, and the U-shaped portion (shown by a broken line) projects from one end of the fin F. . The other end opening projects from the other end of the fin F, and the opening ends of the heat exchange pipes P are connected by a U bend (a solid line portion connecting adjacent pipes) 25, a three-way bend 26, or a jumping pipe 27. .

The heat exchange pipes P in the first auxiliary heat exchanger 31 are arranged in a row along the longitudinal direction of the fins F. Then, the U-shaped heat exchange pipe P is inserted and attached,
The U-shaped portion projects from one end of the fin, and the other end opening projecting from the other end of the fin is connected by a U bend 25.

One heat exchange pipe P in the second auxiliary heat exchanger section 32 is inserted along the longitudinal direction of the fins. The U-shaped portion of the heat exchange pipe P projects from one end of the fin, and the open end projects from the other end of the fin.

One of the open ends of the heat exchange pipe P is connected to the open end of the heat exchange pipe P of the front heat exchanger portion 31 via the U bend 25. The other open end is connected to the open end of the heat exchange pipe of the first auxiliary heat exchanger section 31 via the jumping pipe 27.

In addition to the U bends 25 connecting the second auxiliary heat exchanger section 32 and the front heat exchanger section 21, all the U bends 25 are made of standardized general-purpose products. In other words, the dimensions are set so that the U-bend 25, which is a standardized general-purpose product, can be used.

A single-system refrigerant flow path is formed across the main heat exchanger 20 and the sub heat exchanger 30 constituting the heat exchanger 10. The arrow in FIG. 2 indicates the flow of the refrigerant during the cooling operation.

That is, the refrigerant is introduced from the outside into the heat exchange pipe P at the uppermost end of the first auxiliary heat exchanger portion 31, and exits from the first auxiliary heat exchanger portion 31 and then through the jumping pipe 27. It is guided to the second auxiliary heat exchanger section 32.

The second auxiliary heat exchanger portion 32 moves to the front heat exchanger 21, and the three-way bend 26 at the substantially central portion divides the flow in two directions, up and down. The refrigerant guided to the upper side once rises to the uppermost end, flows further to the lower side, and is guided to another three-way bend 26. On the other hand, the refrigerant guided to the lower side once descends to the lowermost part, then flows to the upper part, and is further guided to the three-way bend 26 via the jumping pipe 27.

The refrigerant merges at the three-way bend 26, is guided to the three-way bend 26 of the rear heat exchanger 22 via the two-way valve 28, and splits. The refrigerant divided in the two directions finally merges into a flow path configuration that is guided to the crossover pipe to the outdoor unit.

The flow of the refrigerant during the heating operation is completely opposite to that described above. In both the cooling operation and the heating operation, the two-way valve between the front heat exchanger portion 21 and the rear heat exchanger portion 22 is in the fully open state.

The air conditioner can also be dehumidified. At this time, the flow of the refrigerant is the same as during the cooling operation, and the two-way valve performs an appropriate throttling action without performing the throttling action in the decompression expansion mechanism (not shown).

In the indoor unit of the air conditioner constructed in this way, as shown in FIG. 1 again, the movable panel 6 closes the front suction port 3 when stopped, and the suction port 3 is closed. Therefore, no dust enters inside the unit body 1. The outlet 7 is also closed by two outlet louvers 8A and 8B.

When the operation switch of the remote controller is turned on, the opening / closing drive mechanism 5 operates to move the movable panel 6 to the front side, so that the front suction port 3 is opened. The room air is guided into the unit main body 1 through the upper suction port 2 and the front suction port 3, passes through the air filter 15, and dust contained in the room air is captured.

The above-mentioned electric dust collector 10 operates to completely capture the dust that has not been captured by the air filter 15.
Therefore, the purified air is guided to the heat exchanger 9, passes through the main heat exchanger 20 and the sub heat exchanger 30, and the heat exchange action is performed.

The heat-exchanged air is guided along the blowout air passage 14 and blown out from the blowout port 7 to the louvers 8A, 8B.
And is blown out into the room for efficient air conditioning operation.

When the operation switch of the remote control is turned off to end the air conditioning operation, the operation of the compressor, the blower 11 and the electrostatic precipitator 10 is stopped, and the opening / closing drive mechanism 5 moves the movable panel 6 backward to suck the front part. Mouth 3 closes.

In particular, the heat exchanger 9 comprises a main heat exchanger 20 which is composed of a front heat exchanger portion 21 and a rear heat exchanger portion 22.
In addition, since the sub heat exchanger 30 including the first auxiliary heat exchanger portion 31 and the second auxiliary heat exchanger portion 32 is provided, the heat exchange capacity of the entire heat exchanger 9 increases. , That much,
Increased heat exchange capacity is obtained.

The first auxiliary heat exchanger section 31 includes the heat exchanger 9
Is formed in a substantially inverted V shape, so that the unit main body 1
Since it is prepared for the dead space that occurs at the inner rear upper end,
The capacity of the unit body 1 is maintained as it is, and the installation space is not affected.

Further, since the second auxiliary heat exchanger section 32 is provided on the front surface of the front heat exchanger section 21 by utilizing the dead space generated above the electrostatic precipitator 10, utilization of the space and further The heat exchange capacity can be increased.

When the cooling operation is performed, naturally, drain water is also generated and flows down to the second auxiliary heat exchanger section 32. Here, since the upper end portion of the front heat exchanger portion 21 is inclined toward the front side and obliquely upward and the second auxiliary heat exchanger portion 32 is arranged in parallel with this portion, the second auxiliary heat exchanger portion 21 is arranged. Exchanger section 3
The drain water generated in 2 all flows down to the front heat exchanger portion 21. Therefore, the drain water generated in the second auxiliary heat exchanger unit 32 does not fall outside from the front drain pan, and the comfortable air conditioning is maintained.

It should be noted that there is a space in the front side of the front side heat exchanger section 21 on the lower side of the electrostatic precipitator 10, and the second auxiliary heat exchanger section 32 can be attached here. .

However, the lower portion of the front heat exchanger portion 21 is inclined toward the front side and obliquely downward. When the second auxiliary heat exchanger section 32 is attached, there is a risk that a part of the drain water will drop from the front drain pan 12A to the outside.
It is unsuitable to attach the auxiliary heat exchanger part 32 to the lower part on the front surface side of the front heat exchanger part 21.

The second auxiliary heat exchanger section 32 is cyclically provided between the main heat exchanger 20 and the first auxiliary heat exchanger section 31.
Will be arranged, so that the length of the transition pipe can be shortened.

Further, the second auxiliary heat exchanger section 32 and the front side heat exchanger section 21 were connected using the U bend 25. This U-bend 25 uses a general-purpose product of the same standard as the other U-bend 25 that connects the opposite ends of the heat exchange pipe P in the other heat exchanger section. Therefore, it is possible to obtain common pipe parts and improve the pipe connection work.

FIG. 3 is a perspective view of a part of a heat exchanger 9A of another embodiment, and FIG. 4 is a side view of the heat exchanger 9A. The heat exchanger 9A here is the front heat exchanger unit 2
The main heat exchanger 20 composed of 1 and a rear heat exchanger portion 22.
Is not changed at all, but only the sub heat exchanger 30A is changed.

That is, in the sub heat exchanger 30A, the first auxiliary heat exchanger portion 31 and the second auxiliary heat exchanger portion 32 are integrally molded via the connecting portion 33.

The first auxiliary heat exchanger portion 31 and the second auxiliary heat exchanger portion 32 in the molded state are connected to each other by the connecting portion 3
In addition to being bent from 3, the connecting portion 33 is provided with a notch 34.

The auxiliary heat exchanger portions 31 and 32 are bent along the notch 34 and are covered on the upper end portion of the main heat exchanger 20. The second auxiliary heat exchanger section 32 is placed on the front heat exchanger section 21, and the first auxiliary heat exchanger section 31 is placed on the rear heat exchanger section 22. Then, the sub heat exchanger 30A is attached and fixed using an appropriate means.

With such a configuration, the sub heat exchanger 3
OA molding and mounting is easy, and work is not affected. Further, since the bent portion 29 of the main heat exchanger 20 formed by the upper end of the front heat exchanger portion 21 and the upper end of the rear heat exchanger portion 22 is covered with the connecting portion 33 of the sub heat exchanger 30A, the raw air is not supplied. The heat exchange efficiency can be further improved without passing through the bent portion 29.

FIG. 5 is a perspective view showing a part of the indoor unit omitted. A part of the electrostatic precipitator 10 can be seen on the front side of the heat exchanger 9. A two-way valve cover 18 that accommodates and covers the two-way valve 28 described above with reference to FIG. 2 is arranged on a side portion of the electric dust collector 10.

The end plate a at the outermost end of the plurality of fins forming the heat exchanger 9 is located at a position slightly protruding outward from the side portion of the two-way valve cover 18, and this end plate a U-bend 25 further protruding outward from the pipe, a pipe 19a connected to the two-way valve 18, or a transition pipe 19 extending to the outdoor unit.
b, etc.

The side portions of the heat exchanger 9 are held and fixed by holding fixtures 40 which will be described later. 6 (A) and 6 (B) are a perspective view and a front view of the holding fixture 40, and they are turned upside down for actual use to correspond to the state of FIG.

The holding fixture 40 is used for the main heat exchanger 20.
Of the front and rear heat exchanger sections 21 and 22 forming the first heat exchanger section 3 that forms the sub heat exchanger 30.
1 is a metal plate body that includes a suppressing portion 41 that suppresses a partial upper surface of the first auxiliary heat exchanger portion 32 and an upper surface of the second auxiliary heat exchanger portion 32, and mounting portions 42 and 43 formed at both ends of the suppressing portion 41.

One mounting portion 42 is mounted and fixed to a mounting piece integrally provided on the two-way valve cover 18 via a fixing screw. The other mounting portion 43 is mounted and fixed to the rear side wall surface (rear plate) 1A of the unit body 1 via a fixing screw.

A feature of the holding fixture 40 is that the holding portion 41 is formed in a crank shape with its position displaced with respect to the mounting portions 42 and 43. Holding fixture 40
The restraining portion 41 of the above restrains and fixes the heat exchanger 9 in a portion displaced to the inside (fin side) of the end plate a on the side portion of the heat exchanger 9. In other words, as shown in FIG. 6B,
The end plate a is located between the two mounting portions 42 and 43, and the restraining portion 41 is provided in parallel with the end plate a without overlapping.

In this way, the first holding fixture 40
The second auxiliary heat exchanger part 3 together with the auxiliary heat exchanger part 31
2 is suppressed and fixed at the same time, so that the mounting strength of the heat exchanger 9 can be increased when a shock is applied.

Further, since the holding portion 41 and the mounting portions 42 and 43 are formed in a crank shape and the holding portion 41 is displaced inside the heat exchanger 9, a gap with the movable panel 6 can be secured particularly.

That is, the filter 15 which is detachably attached across the front suction port 3 and the upper suction port 2 in the unit body 1 has its left and right ends on the unit body 1 side.
The pair of left and right filter guide frames 15 provided so as to project on the rails from the front surface on the rear surface side of the housing to the upper surface.
It is inserted by being guided by a.

The left and right ends of the filter 15 are formed near the end plate a in order to cover the entire heat exchanger 9, and therefore the filter guide frame 15a is located near the outside of the end plate a.

Therefore, in order to prevent the restraining portion 41 of the restraining fixture 40 from overlapping the outer portion of the end plate where the filter guide frame 15a is disposed, the restraining portion 41 is located inside the end plate a. By shifting to the side of a certain fin F, a space outside the end plate is secured, and the storage arrangement can be shifted to the left and right without causing unnecessary protrusion of the front panel due to the front and rear positions of both sides overlapping. .

[0075]

As described above, according to the present invention, the dead space of the front side heat exchanger portion constituting the substantially inverted V-shaped heat exchanger is effectively used, and the efficiency of component arrangement is obtained. At the same time, the effect of increasing the heat exchange area in the heat exchanger is obtained.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an indoor unit that constitutes an air conditioner, showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating a refrigerant flow path of the heat exchanger according to the embodiment.

FIG. 3 is a perspective view showing another embodiment in which a part of the heat exchanger is omitted.

FIG. 4 is a side view of the heat exchanger according to the same embodiment.

FIG. 5 is a perspective view showing still another embodiment in which a part of the indoor unit is omitted.

FIG. 6 is a perspective view and a front view of a holding fixture according to the embodiment.

[Explanation of symbols]

9 ... Heat exchanger, 1 ... Unit body (air conditioner body), 21 ... Front heat exchanger part, 22 ... rear heat exchanger part, 20 ... Main heat exchanger, 32 ... a second auxiliary heat exchanger part, 31 ... a first auxiliary heat exchanger part, 30 ... Sub heat exchanger part, 40 ... Holding fixture 42, 43 ... Mounting part, 41 ... Suppressor, 25 ... U bend.

Claims (6)

[Claims] 1. An air conditioner comprising an air conditioner main body for accommodating a heat exchanger, wherein the heat exchanger comprises a front heat exchanger portion curved in a side view and a straight rear heat exchanger. A main heat exchanger that is formed into a substantially inverted V shape by bending the upper ends of the front heat exchanger part and the rear heat exchanger part into each other, and the rear side of the main heat exchanger. A first auxiliary heat exchanger portion arranged along the upper surface of the heat exchanger portion, and a second auxiliary heat exchanger portion arranged along the upper front surface of the front heat exchanger portion and communicating with the front heat exchanger portion via a pipe. And an auxiliary heat exchanger part of the air conditioner. 2. An air conditioner comprising an air conditioner main body for accommodating a heat exchanger, wherein the heat exchanger comprises a front heat exchanger portion curved in a side view and a straight rear heat exchanger. A main heat exchanger that is formed into a substantially inverted V shape by bending the upper end portions of the front heat exchanger portion and the rear heat exchanger portion into each other, and a first auxiliary heat that is integrally molded. And a second auxiliary heat exchanger part, wherein the first auxiliary heat exchanger part is arranged along the upper surface of the rear heat exchanger part, and the second auxiliary heat exchanger part is An air conditioner, comprising: a sub heat exchanger, which is arranged along an upper portion of the front surface of the front heat exchanger section. 3. The sub heat exchanger, wherein a gap between a first auxiliary heat exchanger portion and a second auxiliary heat exchanger portion is bent, and the front heat exchanger portion and the rear heat exchanger portion are folded at upper ends. The air conditioner according to claim 2, wherein the air conditioner is covered. 4. The first and second auxiliary heat exchanger parts are attached and fixed to the air conditioner body via a holding fixture. Item 4. The air conditioner according to any one of Item 3. 5. The holding fixture is provided at both ends thereof with attachment portions to be attached to the main body of the air conditioner, and the first auxiliary heat exchanger portion and the second auxiliary heat exchanger are provided between these attachment portions. The air conditioner according to claim 4, wherein a holding portion for holding the portion is formed, and the mounting portion and the holding portion are formed by shifting their positions in a crank shape. 6. The front heat exchanger unit and the second auxiliary heat exchanger unit are connected by using a standardized U-bend of a general-purpose product. The air conditioner according to any one of 5 above.