KR20010080343A - Air Conditioner - Google Patents

Abstract

The terminal board 22, the AC circuit unit 23, the DC high voltage circuit unit 24, the DC low voltage circuit unit 25 and the CPU control unit are arranged in series along the longitudinal direction of the indoor unit case 1, and the electric device unit 14 is It has a long and narrow shape. As a result, the air conditioner efficiency can be improved by increasing the size of the indoor heat exchanger without enlarging the body case, and an air conditioner capable of compactly forming the body case without reducing the size of the indoor heat exchanger is provided. Is provided.

Description

Air Conditioner

15 is a schematic view showing an example of an air conditioner indoor unit in the prior art. The body case 81 is provided with an indoor heat exchanger 82 configured by connecting the front and rear heat exchangers each having an inverted V shape. A cylindrical cross flow fan 83 is provided to be interposed between the inverted V-shaped shapes of the indoor heat exchanger 82. The cross flow fan 83 is rotationally driven by a fan motor 85 provided on the right side of the indoor heat exchanger 82. Indoor air is sucked into the front part of the indoor heat exchanger 82 by the rotational driving of the fan motor 85 to perform heat exchange. Therefore, the air-conditioned air is discharged from the lower surface of the indoor heat exchanger 82 to the room.

The indoor side heat exchanger 82 has an auxiliary pipe 86 guided from the right end as shown in FIG. The auxiliary pipe 86 is composed of a liquid pipe and a gas pipe forming a refrigeration circuit connected to an outdoor unit (not shown). The auxiliary pipe 86 guided out of the indoor heat exchanger 82 lies on the right side of the indoor heat exchanger 82. In addition, the connecting pipe 88 is formed so as to surround the auxiliary pipe (86), and is placed from the right side to the left side along the rear surface of the body case (81). Furthermore, an electrical box 90 for providing an electric device including a micro computer and a power amplifier for driving a motor are provided on the right side of the auxiliary pipe 86 so as not to obstruct the air flow path.

In this indoor unit, the auxiliary pipe 86 guided from the indoor side heat exchanger 82 is placed on the right side of the indoor side heat exchanger 82. The electrical box 90 is also provided on the right side of the auxiliary pipe 86. That is, the space guided from the auxiliary pipe 86 and the electrical box 90 occupies two spaces which are not used for direct heat exchange in the body case 81, and the indoor side heat exchange expanded corresponding to the two spaces. It is inevitable to reduce the width of the device 82. Of course, from the side of the air conditioner, the larger the width of the indoor heat exchanger 82 is, the better. On the other hand, in view of the constraints of the installation space and the installation workability, the expansion of the width of the body case 81 is not desirable. Therefore, while reducing the space not used for direct heat exchange in the body case 81, the air conditioner efficiency is increased by increasing the width of the indoor heat exchanger 82 without increasing the width of the body case 81. It is required to improve.

[Overview of invention]

The present invention has been made to solve the above-mentioned problems of the prior art. That is, an object of the present invention is to improve the air conditioner efficiency by increasing the size of the heat exchanger without expanding the body case, and also to make the body case compact without reducing the size of the indoor heat exchanger.

In order to achieve the above object, there is provided an air conditioner having an electric device unit disposed in the indoor unit case, the electric device unit is sequentially in the high voltage circuit section and the low voltage circuit section along the longitudinal direction of the indoor unit case when viewed from the power input unit side; Arranged and configured.

In the air conditioner of such a configuration, the circuit configuration of the electric device unit is arranged in series along the longitudinal direction of the indoor unit case and is formed to have a long and narrow shape. Therefore, it becomes possible to variously position the electric device unit when viewed in a cross section perpendicular to the longitudinal direction of the indoor unit case. This means that it is not necessary to provide a separate space for installing the electric device on the side end of the indoor unit case as required in the conventional structure. Therefore, the indoor unit size is reduced in the longitudinal direction, and as a result, the indoor unit is compact. In other respects, this means that the installation space for the heat exchanger and the fan can be increased in the indoor unit having the same size as the conventional structure. That is, it is possible to increase the air conditioner performance compared to the conventional.

As an embodiment of the present invention, the AC circuit section, the DC high voltage circuit section and the DC low voltage circuit section are sequentially arranged when viewed from the AC power input section.

In the air conditioner of this embodiment, it is possible to obtain the benefits of improving the performance of the air conditioner and making the indoor unit more compact. In the case where voltage conversion is performed after converting AC to DC, the circuit configuration as described above is suitable.

As one embodiment of the invention, the alternating current high voltage circuit portion, the alternating current low voltage circuit portion and the direct current low voltage circuit portion are arranged sequentially when viewed from the alternating current power input portion.

In the air conditioner of this embodiment, it is possible to obtain the benefits of improving the performance of the air conditioner and making the indoor unit more compact. In the case where step-down is performed with transformers, such a circuit configuration is suitable.

As an embodiment of the present invention, the DC high voltage circuit portion and the DC low voltage circuit portion are sequentially arranged when viewed from the DC power input portion.

In the air conditioner of this embodiment, it is possible to obtain the benefits of improving the performance of the air conditioner and making the indoor unit more compact. In the model in which the AC DC converter is provided outside the unit, the above circuit configuration is suitable.

In one embodiment of the present invention, the power input unit is provided on one side in the indoor unit case in which the high voltage driving actuator is disposed.

In the air conditioner of this embodiment, since the high voltage drive actuator is disposed close to the high voltage circuit portion side, the connecting device is reduced, the configuration is simplified, and assembly and connection work are convenient.

In one embodiment of the present invention, the low voltage driving actuator is provided on one side of the indoor unit case in which the low voltage circuit portion is disposed, and one side thereof is the opposite side to the side on which the high voltage driving actuator is provided.

In the air conditioner of this embodiment, since the high voltage driving actuator is disposed close to the high voltage circuit portion side, the connecting device is further reduced, the configuration is simplified, and the assembling and connecting work is more convenient.

In one embodiment of the invention, the high voltage drive actuator is an indoor fan drive motor and the low voltage drive actuator is a flap regulating motor. This air conditioner is suitable for this embodiment.

In one embodiment of the present invention, a single or a plurality of circuit parts such as a unit block are installed in one circuit board, and a plurality of circuit boards are arranged along the longitudinal direction of the indoor unit case.

In the air conditioner of this embodiment, since a single or a plurality of circuit portions are provided on the circuit board as the unit block, the maintenance work is convenient.

In one embodiment of the present invention, the length (length) in the longitudinal direction in which the electric device unit is disposed is 1/2 or more of the size (length) in the longitudinal direction of the indoor unit case.

In the air conditioner of this embodiment, the electric device unit has a long and narrow shape along the longitudinal direction of the indoor unit case, and it is possible to position the electric device unit in various spaces when viewed in a cross section perpendicular to the longitudinal direction of the indoor unit case. Therefore, the indoor unit can reduce its longitudinal size, and as a result, the performance of the air conditioner as well as the compactness of the indoor unit can be obtained.

In one embodiment of the present invention, the electric device unit is disposed above the discharge part of the indoor unit case and is positioned over an area extending in the length direction between the indoor heat exchanger drain pan and the front part of the indoor unit case.

When a drain pan is provided below the indoor heat exchanger in an area placed on the discharge portion of the indoor unit as the air conditioner of the present embodiment, the position between the drain pan and the front panel of the indoor unit case is inevitably dead. Space) area. Therefore, installing the electric device unit in this area makes it possible to use the space inside the indoor unit case more efficiently. As a result, the indoor unit becomes more compact, and the air conditioner performance is further improved.

In one embodiment of the invention, in the electrical device unit, the electrical components that emit high heat by themselves are located on the upper surface of the circuit board.

In the air conditioner according to another embodiment of the present invention, since the electric components that emit high heat by themselves are arranged on the upper surface of the circuit board, the heat dissipation amount of the electric device can be accelerated, whereby the other electric components emit heat Can be prevented from being affected by

In one embodiment of the invention, the heat dissipation hole for cooling the electrical device unit is open toward the front side.

In the air conditioner of this embodiment, by the heat dissipation hole which is open toward the front surface, the air flowing along the front surface can accelerate the heat dissipation amount of the electrical components that emit high heat by themselves. In addition, since the heat dissipation hole is open toward the front side, penetration of the drain water can be prevented, and the reliability of the apparatus can be maintained.

As an embodiment of the present invention, the power input unit is given by the terminal board, and the insertion direction of the VVF line of the terminal board is determined in the longitudinal direction of the indoor unit case.

In addition, as an embodiment of the present invention, the insertion direction of the VVF line is directed from the power input unit to the DC low voltage circuit unit.

In the air conditioner of this embodiment, the VVF line is inserted into the terminal board in the direction from the AC circuit section to the DC low voltage circuit section along the longitudinal direction of the indoor unit case. Inserting the VVF line in such a direction facilitates the work of inserting and connecting the VVF line itself, eliminating interference between the VVF line and each circuit part, thus making line routing easier and reducing noise. Become.

The present application relates to an air conditioner, in particular to an improved air conditioner in the installation space of an electrical device unit.

1 shows a schematic front view showing a first embodiment of an air conditioner according to the present invention.

2 shows a schematic front view similar to the above, showing a first embodiment of an air conditioner according to the invention.

3 shows a schematic side view showing a first embodiment of an air conditioner according to the present invention.

4 is a sectional view showing a first embodiment of an air conditioner according to the present invention.

Figure 5 shows an exploded view showing a first embodiment of the air conditioner according to the present invention.

6 shows an exploded view of an example of an electric device unit used in the air conditioner.

7 shows a schematic plan view of the electrical device unit.

8 shows a block diagram showing the circuit configuration of the electrical device unit.

9 is a sectional view showing a structure around a light emitting display unit in the electric device unit.

10 shows a block diagram showing the circuit configuration of the electrical device unit.

11A and 11B show a block diagram showing a modification of the circuit configuration of the electric device unit.

12 shows a schematic view showing an arrangement example of the electric device unit of the air conditioner.

Fig. 13 shows a schematic diagram showing an arrangement example in which the electric device unit of the air conditioner is divided.

14 shows a schematic diagram showing another arrangement example in which the electric device unit of the air conditioner is divided.

15 shows a schematic diagram showing an example of an electric device unit in the prior art.

Next, a specific embodiment of the air conditioner according to the present invention will be described with reference to the accompanying drawings. First, the first embodiment is described. Such an air conditioner is composed of an outdoor unit and an indoor unit, and the following description relates to a wall-mounted indoor unit.

(First embodiment)

3, 4 and 5, the internal structure of the indoor unit will be described. As shown in Fig. 5, the indoor unit case 1 is composed of a body case 1a, to which main components such as the indoor side heat exchanger 4, the cross flow fan 9 and the electric unit 14 are attached. The front grille 5 is attached to the front portion of the body case 1a, and the front panel 7 is attached to the front portion of the front grille 5. Here, the indoor unit case 1 has a shape that is longer in width than the vertical length as a whole. Among these components, the front panel 7 is detachably free for the user. On the other hand, the body case 1a and the front grille 5 are not removable.

Furthermore, as shown in FIGS. 3 and 4, a plate-fin type indoor heat exchanger 4 is provided in the indoor unit case 1, in which the front heat exchanger 2 and the rear heat exchanger 3 are reversed. It is arranged in the shape of a ruler. In this indoor unit case 1, as shown in FIG. 4, the upper surface suction part 6 is formed in the ceiling part of the front grille 5, and the front suction part 8 is formed in the front panel 7. As shown in FIG. In these components, the upper suction part 6 is formed by making the ceiling of the front grille 5 into a lattice shape, while the front suction part 8 is upper side in the approximately upper middle part of the front panel 7. It is formed by extending the side toward the opening. Further, a crossflow fan 9 is provided inside the reverse V-shape of the indoor heat exchanger. This cross flow fan 9, also called an axial fan, extends in its axial direction along the longitudinal direction of the indoor unit case 1 at a predetermined position. At this time, the scroll portion 10 is formed at the rear of the cross flow fan 9, which is connected in a gentle form to the discharge portion 11 which is open at the front lower side of the indoor unit case 1.

The upper wall surface 12 of the discharge portion 11 is integrally formed in the drain pan 13 located under the front heat exchanger 2. The electric device unit 14 is placed at a position between the upper part of the discharge part 11 and the front surface of the drain pan 13, that is, the upper part of the discharge part 11 and the front surface of the drain pan 13. The rear drain pan 15 is placed under the rear heat exchanger.

The indoor unit itself and the indoor unit case 1 are rectangular in shape as shown in Figs. 1 and 2 while the front suction part 8 and the discharge part 11 extend in the longitudinal direction of the indoor unit case 1. It is. In addition, the electric device unit 14 is formed to extend along the longitudinal direction of the indoor unit case 1 at the upper surface position of the discharge portion 11, as shown in Figs. 1 and 2, the drain pan 13 ) Is formed at the position on the front surface of.

A simplified structure of the electrical device unit 14 is described with reference to FIGS. 6, 7 and 8. According to FIG. 6, reference numeral 20 denotes an electrical device case including the electrical device unit 14 therein, and 21 denotes an electrical device cover covering the electrical device unit 14. The electrical device unit 14 here lies between the two members 20, 21. As shown in FIG. 8, the electrical device unit 14 includes a terminal board 22 provided as a power input connected to a commercial power supply (100 VAC or 200 VAC), an AC circuit section 23, It consists of the DC high voltage circuit part 24, the DC low voltage circuit part 25, the CPU control part 26, and the light emission display part 27. As shown in FIG.

6 and 7, the DC high voltage circuit part 24 is on the first PCB 28, the DC low voltage circuit part 25 is on the second PCB 29, and the light emitting display part 27 is the display panel ( 30) is mounted on. As shown in FIG. 6 and FIG. 7, the terminal board 22, the AC circuit unit 23, the DC high voltage circuit unit 24, the DC low voltage circuit unit 25, and the CPU control unit 26 from the right side to the opposite side in the drawing. Are arranged in series along the longitudinal direction of the indoor unit case 1 and coincide with the electrical device case 20. In addition, the display panel 30 matches the rear surface of the electrical device cover 21, and in this state, the electrical device case 20 matches the rear surface of the electrical device cover 21. In the electrical device cover 21, openings 31 are formed in corresponding positions that allow the LEDs, seven segment LEDs or other light emitting portions 27 to be visible from the outside.

In this electric device unit 14, in a substantially rectangular form, the first PCB 28, the second PCB 29 and the display panel 30 are formed as rectangular as possible. The first PCB 28 and the second PCB 29 are connected to each other by a plate 39 and a connector 39 for connecting the plates, and no other device is required (ie, the device is not present).

The DC high voltage circuit portion 24 provided on the first PCB has heat generating components such as the SW transformer 41, the rectifying diode 42, and the main surface SW device 43 therein. These self-heating electrical device components 41, 42, 43 are placed on a vertically extending first PCB, as shown in FIG. 7, wherein the electrical device components 41, 42, By accelerating the heat dissipation of 43), it is possible to prevent other electrical components from being affected by the heat dissipation amount. In addition, the electric device unit 14 is mounted in the electric device case 20 and covered by the electric device cover 21 as described above. Any gap (part indicated by reference numeral 45 in FIG. 7) is provided as a heat dissipation hole between the top of the electrical device case 20 and the top of the electrical device cover 21, the gap being open toward the front and As a result, the air flowing along the front acts to accelerate the heat dissipation of the electrical components 41, 42 and 43 which emit high heat on their own. Further, by making the heat dissipation hole open toward the front part, the penetration of the drain water can be prevented and the reliability of the device can be maintained.

In such an air conditioner, an indoor fan drive motor of the DCPWM type for driving the cross flow fan 9 is installed on the right side of FIG. And a flap control motor (stepping motor) for controlling the drive of a horizontal flap is provided in the left side of FIG. As shown in FIG. 8, the indoor fan drive motor 35 receives power from the DC high voltage circuit unit 24, while the flap control motor 36 receives power from the DC low voltage circuit unit 25. That is, as shown in FIGS. 6 and 7, the DC high voltage circuit unit 24 is installed on the right side, and the DC low voltage circuit unit 25 is installed on the left side, and the indoor fan drive motor 35 is the right side as the high voltage driving actuator. The flap control motor 36 is provided on the left side as a low voltage drive actuator. As a result, the circuit portions 24 and 25 and the actuators 35 and 36 are arranged as close to each other as possible.

Also, as shown in FIG. 8, when the indoor unit is connected to the outdoor unit 37, this configuration is performed by the VVF line 38. FIG. This VVF line 38 is composed of a pair of power supply alternating current lines and transmission lines for internal and external transmission. VVF lines 38 as internal and external connection lines are insertable from the right side of FIGS. 6 and 7 and can be connected to the terminal board 22. That is, the direction in which the VVF line 38 is inserted into the terminal board 22 becomes the longitudinal direction of the indoor unit case 1 and the direction from the AC circuit section 23 to the DC low voltage circuit section 25. Inserting the VVF line 38 in such a direction improves the workability of connecting and inserting the VVF line 38 itself. It is also possible to exclude the interference between the VVF line 38 and the respective circuit portions 23, 24, 25, 26. This makes line routing easier and reduces noise.

As shown in FIG. 9, the electrical device cover 21 and its opening 31 can be viewed by the user through the see-through window 32 of the front grille 5 from the outside. It should be noted here that the front panel 7 does not cover the entirety of the front grille 5, and the front grille 5 is also exposed to its underside as shown.

In the air conditioner shown in Fig. 12, the electric device unit 14 has a length " a " of the electric device unit 14 along the longitudinal direction of the indoor unit case 1 at least the length " LA " Is installed to be 1/2 or more of ". The length "a" of this electric device unit 14 is preferably as long as possible, and is provided so as to be at least 2/3 or more of the length "LA" of the indoor unit case 1. More preferably, the length "a" of the electric device unit 14 along the longitudinal direction of the indoor unit case 1 is provided to be approximately equal to the length "LA" of the indoor unit case 1. Making the length of the electrical device unit 14 as close as possible to the maximum or closest to the maximum makes the cross-sectional area minimum or close to the minimum value, which is free to the position where the electrical device unit 14 is placed. This results in an improvement in the degree of freedom and a reduction in air conditioning resistance to them. Therefore, the indoor unit can be made more compact, and the air conditioning performance can be greatly improved.

In such an air conditioner, the electric device unit 14 includes a terminal board 22, an AC circuit section 23, a DC high voltage circuit section 24, a DC low voltage circuit section 25, and a CPU control section 26. The electrical device unit 14 has a long, narrow shape because it is constituted by arranging in series along the longitudinal direction. This eliminates the need for a special space for installing the electric device unit 14 related to the conventional structure on the side surface of the indoor unit case 1. Therefore, the length of the indoor unit can be shortened, and as a result, the indoor unit becomes more compact. In other respects, this means that the installation space for the indoor side heat exchanger 4 and the cross flow fan 9 can be further increased in the indoor unit having the same size as the conventional one. Therefore, the air conditioning performance can be improved as compared with the prior art.

In such an air conditioner, since the indoor fan drive motor (high voltage drive actuator) 35 is disposed close to the DC high voltage circuit section 24, the connection device is reduced, the configuration is simplified, and the connection and assembly work is convenient. In addition, since the flap control motor (low voltage drive actuator) 36 is disposed close to the DC low voltage circuit portion 25, the connecting device is reduced, the configuration is simplified, and the connection and assembly work is convenient. In addition, the DC high voltage circuit section 24 and the DC low voltage circuit section 25 are provided in the PCB 28 and the PCB 29 as unit blocks, respectively, to facilitate maintenance work.

In such an air conditioner, the heat dissipation amount of the electrical device components 41, 42, 43 because the electrical components 41, 42, 43 which dissipate high heat by themselves are arranged on the upper surface of the PCB 28. Can be accelerated, thereby preventing other electrical components from being affected by the amount of heat released. In addition, the heat dissipation hole 45 is open toward the front side, which makes it possible to accelerate the heat dissipation of the electrical components 41, 42, 43 which release themselves high heat by air flowing along the front side. Become. In addition, since the heat dissipation hole 45 is open toward the front side, penetration of the drain water can be prevented, and the reliability of the apparatus can be maintained.

Further, in such an air conditioner, the VVF line 38 is connected to the terminal board 22 in the direction from the AC circuit section 23 to the DC low voltage circuit section 25 along the longitudinal direction of the indoor unit case 1. Is inserted. Inserting the VVF line 38 in such a direction facilitates the insertion and connection of the VVF line 38 itself, and the interference between the VVF line 38 and the circuit portions 24, 25, 26, respectively. Can be eliminated, thus making line routing easier and reducing noise.

In such an air conditioner, the electric device unit 14 is placed in front of the drain pan 13 while being at the upper position of the discharge portion 11. This area is a part that needs to be a free space for preventing a short circuit between the discharge part and the suction part. Since the electric device unit 14 is placed in such an area, the internal space of the indoor unit case 1 can be used more efficiently. As a result of this, the indoor unit can be made more compact, or the air conditioning performance can be further improved.

Also in such an air conditioner, the electric device unit 14 is mounted in the electric device case 20 and covered with the electric device cover 21. This can prevent the electric device unit 14 from being adversely affected by the number of drains in the drain pan 13, and consequently, the electric device unit 14 can be improved in reliability. The electrical device unit 14 is prevented from being adversely affected by water filled for use in checking the drainage function in the installation work or a cleaning agent used for cleaning the indoor heat exchanger 4. The device unit 14 can be improved in reliability and warranty period.

It should be noted that the shielding mechanism for the drain water can only prevent the possibility of side effects such as a short circuit due to the drain water, and it is not necessary to completely waterproof the penetration of the drain water. The shielding mechanism here includes measures such as removing one of the electrical device case 20 and the electrical device cover 21 or merely providing a split board. Thus, in such an air conditioner, when the front panel 7, the front grille 5 and the electrical device cover 21 are removed, the electrical device unit 14 is exposed to the outside. In this case, the electrical device components can be inspected, replaced and repaired from the front. Therefore, it is easy to replace and maintain parts.

In such an air conditioner, a light emitting display unit 27 is attached to the electric device unit 14, and the light emitting display unit 27 is observed from the outside through the viewing window 32 provided on the front of the indoor unit case 1. Put it where possible. As such, since the light emitting display unit 27 is integrally provided to the electric device unit 14, the conductive wire and the like electrically connecting the electric unit 14 and the light emitting display unit 27 have a length as in the related art. It does not need to be long, and as a result, the length of the lead wire is significantly shorter and the unit cost is reduced as compared with the conventional structure. In particular, by keeping the electrical components and the light emitting display portion 27 close to each other, the maintenance work is also convenient. Furthermore, since the electric device unit 14 is mounted in the electric device case 20 and covered with the electric device cover 21 to be formed in a columnar unitary body, the air conditioner can be easily processed and operated. As a result, cost reduction and improved reliability can be achieved.

10 schematically shows the arrangement of circuits, respectively. As described above, the terminal board 22, the AC circuit unit 23, the DC high voltage circuit unit 24, and the DC low voltage circuit unit 25 are disposed along the length direction of the indoor unit case 1. 11a and 11b simplifies them, and FIG. 11a shows an arrangement suitable for a result having an AC / DC converter section external to the unit, wherein the circuit sections of the DC high voltage circuit section 24 and the DC low voltage circuit section 25 It is placed along the longitudinal direction of the indoor unit case 1. Fig. 11B shows an arrangement suitable for the result of the step-down being performed by a transformer or the like. The terminal board 22, the AC high voltage circuit section 23, the AC low voltage circuit section 23a and the DC low voltage circuit section 25 are shown. Circuit parts included are placed along the longitudinal direction of the indoor unit case (1).

(Example where the shape of the electric device unit is modified)

In the above-described air conditioner, the electric device unit 14 is mounted in the electric device case 20 and is covered with the electric device cover 21 to form a single columnar unit, which manufactures the air conditioner. And convenient operation, and also reduce the cost and increase the reliability. In addition, as shown in FIG. 13, the electric device unit 14 may be implemented differently as a plurality of units 14a, 14b, 14c, usually along a straight line. More specifically, the electrical device unit 14 is composed of a plurality of PCBs, which are mounted on the same substrate and electrically connected to each other.

When the electric device unit 14 is configured in this manner, the electric device unit 14 is formed in a general columnar shape in terms of miniaturization and operability. In addition, as shown in FIG. 14, the electrical device unit 14 may be implemented by a plurality of units 14a, 14b, 14c, where the units 14a, 14b, 14c have a length. The positions are arranged so as to change positions with respect to both the direction and the direction transverse to the longitudinal direction (air flow direction). This configuration of the electric device unit 14 makes it possible to improve the degree of freedom for selecting the arrangement position, and to enable the proper arrangement according to the machine model.

The indoor unit of such an air conditioner is not limited to a wall-mounted air conditioner, and includes various types such as floor mounted type and ceiling embedded type. Thus, as seen by the user, the term longitudinal direction may mean left-right direction and up-down direction or horizontal direction.

Claims (14)

In an air conditioner having an electric unit located in an indoor unit case, And the electric unit is a high voltage circuit part and a low voltage circuit part sequentially arranged along the longitudinal direction of the indoor unit when viewed from the power input part of the side surface. The method of claim 1, An air conditioner in which an AC circuit portion, a DC high voltage circuit portion, and a DC low voltage circuit portion are sequentially disposed when viewed from an AC power input portion on the side. The method of claim 1, An air conditioner in which an alternating current high voltage circuit portion, an alternating current low voltage circuit portion, and a direct current low voltage circuit portion are sequentially arranged when viewed from an AC power input portion on the side. The method of claim 1, An air conditioner in which a direct current high voltage circuit portion and a direct current low voltage circuit portion are arranged sequentially when viewed from a side direct current power input portion. The method according to any one of claims 1 to 4, And the power input unit is configured at one side of an indoor unit case in which a high voltage driving actuator is disposed. The method of claim 5, The low voltage drive actuator is configured on one side in the indoor unit case in which the low voltage circuit unit is disposed, the one side is an air conditioner that is opposite to the side on which the high voltage drive actuator is configured. The method of claim 6, Wherein said high voltage drive actuator is an indoor fan drive motor and said low voltage drive actuator is a flap control motor. The method according to any one of claims 1 to 7, An air conditioner in which a single or a plurality of circuit units as a unit block is provided on one circuit board, and the plurality of circuit boards are arranged along the longitudinal direction of the indoor unit. The method according to any one of claims 1 to 8, An air conditioner in which the length of the space in which the electric device unit is disposed is 1/2 or more of the length of the indoor unit case. The method according to any one of claims 1 to 9, And the electric unit is disposed over a laterally extended area placed between an upper side of a discharge portion of the indoor unit case and a front panel of the indoor unit and a drain pan of an indoor heat exchanger. The method of claim 10, And wherein the electrical components that dissipate heat within the electrical device unit are disposed on the upper surface of the circuit board. The method of claim 10 or 11, And a heat dissipation hole for cooling the electric unit is open toward the front side. The method according to any one of claims 1 to 12, The power input unit is provided by a terminal board and the insertion direction of the VVF line in the terminal board is determined along the longitudinal direction of the indoor unit case. The method of claim 13, And the insertion direction of the VVF line is directed from the power input portion to the DC low voltage circuit portion.