JP2016038180A - Outdoor unit and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit which can sufficiently secure a ventilation path of air in a housing, and an air conditioner including the outdoor unit.SOLUTION: An outdoor unit 1 of an air conditioner includes: a housing 2; a compressor 3; a heat exchanger 4; a fan 5; a filter 601 for suppressing higher harmonics; a higher harmonics suppressing control circuit 602 for controlling the filter 601; an inverter 603 for compressor drive; an inverter control circuit 604 for compressor drive; an inverter 605 for fan drive; an inverter control circuit 606 for fan drive; a converter 607; and a cycle control circuit 608. The filter 601, the higher harmonics suppressing control circuit 602, the inverter 603 for compressor drive, the inverter control circuit 604 for compressor drive, the inverter 605 for fan drive, the inverter control circuit 606 for fan drive, the converter 607 and the cycle control circuit 608 are accommodated in a single electric box 61, and the electric box 61 is mounted in the housing 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an outdoor unit and an air conditioner including the outdoor unit.

  An outdoor unit of an air conditioner includes a compressor, a heat exchanger, and a fan, and waste heat generated from a heat exchanger or the like during cooling operation is generated outdoors by the flow of wind generated by the rotation of the fan by the fan motor. Dissipate heat to the outside of the machine casing.

  The compressor and the fan motor are usually controlled by an inverter so that the rotational speed can be varied. When such inverter control is performed, harmonic current is generated in the commercial power supply of the device equipped with the inverter, which may cause vibration, noise, and the like. A wave suppression device is provided (see, for example, Patent Document 1).

JP 2012-225537 A

  However, in a conventional outdoor unit, a fan drive inverter that drives a fan motor, a compressor drive inverter that sends a desired current to the motor mounted on the compressor, and a cycle control circuit that performs cycle control of the air conditioner And the electrical box for storing the above-described harmonic suppression device are separately provided (see the electrical box 81 and the electrical box 82 in FIG. 6). As a whole, it becomes bulky, and a ventilation path in the housing cannot be secured sufficiently. As a result, the heat exchange efficiency (operating efficiency) of the fan motor tends to deteriorate.

  The present invention has been made based on the circumstances as described above, and an object of the present invention is to provide an outdoor unit that can sufficiently secure a ventilation path of air in the housing, and an air conditioner including the outdoor unit. Is to provide.

The invention made to solve the above problems is
A housing, a compressor disposed on a bottom plate of the housing, a heat exchanger disposed on a side plate of the housing, a fan attached to the housing and blowing air to the heat exchanger, A filter for suppressing harmonics, a harmonic suppression control circuit for controlling the filter, a compressor driving inverter for driving the compressor, and a compressor driving inverter control circuit for controlling the compressor driving inverter The fan drive inverter that drives the fan, the fan drive inverter control circuit that controls the fan drive inverter, the compressor drive inverter, and the fan drive inverter rectified the output of the filter In an outdoor unit of an air conditioner including a converter that supplies current and a cycle control circuit that controls a refrigeration cycle, the filter, the harmonic The suppression control circuit, the compressor drive inverter, the compressor drive inverter control circuit, the fan drive inverter, the fan drive inverter control circuit, the converter, and the cycle control circuit are housed in a single electric box. The outdoor box is characterized in that the electric box is mounted in the housing.

Moreover, another invention made in order to solve the said subject is:
It is an air conditioner provided with the outdoor unit.

  In this specification, “microcomputer” means a microprocessor.

  INDUSTRIAL APPLICABILITY The present invention can provide an outdoor unit that can sufficiently secure an air ventilation path in a housing and an air conditioner including the outdoor unit.

It is the schematic of the outdoor unit which concerns on the 1st-3rd embodiment of this invention, Comprising: (a) is a front view, (b) has each shown the side view. It is a schematic diagram which shows the electric box in the outdoor unit which concerns on the 1st Embodiment of this invention. It is a schematic diagram which shows the electric box in the outdoor unit which concerns on the 2nd Embodiment of this invention. It is a schematic diagram which shows the electric box in the outdoor unit which concerns on the 3rd Embodiment of this invention. It is a refrigeration cycle system diagram of the air conditioner of the present invention. It is a schematic diagram which shows one form of the electric box which concerns on the conventional outdoor unit.

<Outdoor unit>
The outdoor unit of the present invention includes a housing, a compressor disposed on a bottom plate of the housing, a heat exchanger disposed on a side plate of the housing, and the heat exchange attached to the housing. A fan that blows air to the compressor, a filter that suppresses harmonics, a harmonic suppression control circuit that controls the filter, an inverter that drives the compressor that drives the compressor, and a compressor that controls the inverter that drives the compressor Machine drive inverter control circuit, fan drive inverter for driving the fan, fan drive inverter control circuit for controlling the fan drive inverter, compressor drive inverter and fan drive inverter, In an outdoor unit of an air conditioner comprising a converter that supplies the output of the filter as a rectified current and a cycle control circuit that controls a refrigeration cycle, Filter, harmonic suppression control circuit, compressor drive inverter, compressor drive inverter control circuit, fan drive inverter, fan drive inverter control circuit, converter and cycle control circuit are single. The electric box is housed in an electric box, and the electric box is mounted in the housing.

  The device including the filter and the harmonic suppression control circuit is referred to as “harmonic suppression device”, the device including the compressor driving inverter and the compressor driving inverter control circuit is referred to as “compressor driving inverter device”, and the fan. A device including a drive inverter and a fan drive inverter control circuit is also referred to as a “fan drive inverter device”, and a device including a cycle control circuit is also referred to as a “cycle control device”.

  Hereinafter, although 1st-3rd embodiment of the outdoor unit of this invention is described with reference to FIGS. 1-4, this invention is not limited only to embodiment described in the said drawing. FIG. 1 is a schematic view of an outdoor unit according to the first to third embodiments of the present invention, and the configurations of a casing 2, a compressor 3, a heat exchanger 4 and a fan 5, which will be described later, are described above. Since it is the same in the embodiments, description of the casing 2, the compressor 3, the heat exchanger 4, and the fan 5 in the second and third embodiments will be omitted.

[First Embodiment]
FIG. 1 is a schematic view for explaining an embodiment of the outdoor unit of the present invention, where (a) shows a front view and (b) shows a side view. FIG. 2 is a schematic view showing an electric box in the outdoor unit according to the first embodiment of the present invention. As shown in FIG. 1, the outdoor unit 1 according to the first embodiment includes a housing 2, a compressor 3, a heat exchanger 4, a fan 5, and an electric box 61.

  The housing 2 is a substantially rectangular parallelepiped box that houses the compressor 3, the heat exchanger 4, the fan 5, the electric box 61, and the like. The housing 2 is generally constituted by a bottom plate 21, a side plate 22, and a top plate 23. The side plate 22 is further constituted by a front plate 221, a back plate 222, and a pair of side plates 223 facing each other. Has been. Further, attachment feet 24 are attached to the corners of the bottom plate 21 of the housing 2.

  The compressor 3 compresses the refrigerant and is disposed on the bottom plate 21 of the housing 2. The compressor 3 is inverter-controlled so that the rotational speed of the rotary shaft of the compressor 3 can be varied. Examples of the compressor 3 include a reciprocating compressor, a screw compressor, a scroll compressor, and the like, but the present invention is not limited to such examples.

  The heat exchanger 4 performs heat exchange between the refrigerant and air (outside air), and is disposed on the back plate 222 and the side plate 223 of the side plate 22.

  The fan 5 exhausts air in the housing 2 and supplies air to the heat exchanger 4. The fan 5 is an upper portion of the housing 2 facing the bottom plate 21 (opening as an outlet provided on the top plate 23. The upper portion of the housing 2 facing the portion 23a). Examples of the fan 5 include a sirocco fan, a turbo fan, a propeller fan, and the like, but the present invention is not limited to such illustration. Among these, the fan 5 is preferably a propeller fan in that air can be discharged and supplied efficiently. The number of fans may be one as shown in FIG. 1 or a plurality (not shown).

  A fan motor 51 is connected to the rotating shaft of the fan 5. The fan motor 51 is inverter-controlled so that the rotation speed of the rotation shaft of the fan 5 can be varied.

  As shown in FIG. 2, the electric box 61 includes a filter 601 as a module, a harmonic suppression control circuit 602, a compressor drive inverter 603, a compressor drive inverter control circuit 604, a fan drive inverter 605, and a fan drive. It is a single box that houses the inverter control circuit 606, the converter 607, and the cycle control circuit 608. The electrical box 61 houses modules such as a noise filter 609, a current sensor 610, and a smoothing circuit 611 in addition to the above modules. As shown in FIG. 1, the electric box 61 is attached to the inside of the housing 2 of the front plate 221 at the substantially central portion in the vertical direction of the housing 2. Further, on the surface of the electric box 61 opposite to the front plate 221, heat radiating fins 64 for releasing heat generated from the module and the like are attached.

  In the first embodiment, as shown in FIG. 2, the filter 601 and the harmonic suppression control circuit 602 are formed on a single substrate A1, and the converter 607, the compressor drive inverter 603, and the compressor drive inverter control circuit are formed. 604, the fan drive inverter 605 and the fan drive inverter control circuit 606 are formed on a single substrate A2, and the cycle control circuit 608 is formed on the substrate A3. In these substrates, the substrate A1 and the substrate A3 are connected in parallel to the subsequent stage of the noise filter 609, and the substrate A2 is connected to the subsequent stage of the substrate A1. Note that the above-described substrate A1, substrate A2, and substrate A3 are different substrates.

  Further, the compressor drive inverter control circuit 604 and the fan drive inverter control circuit 606 are constituted by a single microcomputer a1.

  The filter 601 suppresses harmonics in the input current (AC current input from the power supply 7). The harmonic suppression control circuit 602 processes a current measured by a current sensor 610 described later and controls the filter 601. For this reason, the harmonic suppression device including these suppresses harmonics in the input current generated by the inverter control of the compressor 3 and the like, and brings the current waveform of the power supply closer to a sine wave.

  The compressor driving inverter 603 supplies power for driving the compressor 3. The compressor drive inverter control circuit 604 controls the output of the compressor drive inverter 603 to be variable. Therefore, the inverter device for driving the compressor provided with these changes the rotational speed of the compressor 3 and controls the compression capacity.

  The fan drive inverter 605 supplies power for driving the fan 5. The fan drive inverter control circuit 606 controls the output of the fan drive inverter 605 to be variable. For this reason, the fan drive inverter control device including these controls the air supply capability of the fan 5 by varying the rotational speed of the fan motor 51.

  The converter 607 supplies the output of the filter 601 as a rectified current to the compressor driving inverter 603 and the fan driving inverter 605.

  The cycle control circuit 608 controls the refrigeration cycle.

  The noise filter 609 suppresses noise included in the power source 7 such as a three-phase AC commercial power source and noise generated from the compressor driving inverter 603, the fan driving inverter 605, and the like. The current sensor 610 measures the current supplied to the filter 601. The smoothing circuit 611 smoothes the pulsating current included in the rectified current in cooperation with the converter 607 described above to a state closer to direct current.

  Next, the air ventilation path and ventilation inside the housing 2 of the outdoor unit 1 described above will be described. In the outdoor unit 1 configured as described above, a series of spaces along the substantially vertical direction connecting the vicinity of the compressor 3, the side of the electric box 61, and the vicinity of the fan 5 are formed inside the housing 2. Space becomes a ventilation path. In the ventilating path having such a configuration, when the fan 5 is driven, air is ventilated as indicated by arrows Y1 to Y3 in FIGS. 1 (a) and 1 (b). That is, the air in the housing 2 is discharged from the opening 23a by driving the fan 5 (see arrow Y3), and the air flows into the housing 2 through the heat exchanger 4 along with this discharge (arrow). Next, the inflowing air rises in the housing 2 (see arrow Y2), and the raised air is discharged from the opening 23a (see arrow Y3).

  At that time, the air exchanges heat with the heat exchanger 4, absorbs heat radiation from the radiation fins 64 attached to the electric box 61, and is released to the outside of the housing 2.

  As described above, in the first embodiment, the filter 601, the harmonic suppression control circuit 602, the compressor drive inverter 603, the compressor drive inverter control circuit 604, the fan drive inverter 605, and the fan drive inverter control circuit 606 are provided. Since the converter 607 and the cycle control circuit 608 are housed in the single electric box 61 and the electric box 61 is mounted in the housing 2, the electric box can be shared and compared with the case where a plurality of electric boxes are mounted. The volume of the electric box 61 can be reduced by reducing the number of parts accompanying the unnecessary wiring between the electric boxes. As a result, a sufficient air ventilation path in the housing 2 can be secured, and the heat exchanger 4 can Heat exchange and heat radiation by the radiation fins 64 can be promoted. Moreover, since it is comprised by the single electrical box 61, since wiring between electrical boxes becomes unnecessary, it is excellent in waterproofness.

  In addition, since the fan 5 is disposed on the upper portion of the housing 2 facing the bottom plate 21, the air taken in from the side of the outdoor unit 1 by driving the fan 5 and heat-exchanged by the heat exchanger 4 or the like, It can be raised in a substantially vertical direction along the ventilation path, and can be efficiently discharged from the opening 23a to improve the heat exchange efficiency (operation efficiency).

  Further, since the filter 601 and the harmonic suppression control circuit 602 are formed on the single substrate A1, the thickness of the electric box 61 can be reduced, a ventilation path can be further secured, and the converter 607 can be secured. Since the compressor driving inverter 603, the compressor driving inverter control circuit 604, the fan driving inverter 605 and the fan driving inverter control circuit 606 are formed on a single substrate A2, the thickness of the electric box 61 is reduced. It can be made thinner, and the ventilation path can be more sufficiently secured.

  In addition, since the harmonic suppression device, the compressor drive inverter device, the fan drive inverter device, and the like are connected to the rear stage side of the noise filter 609, the noise filter 609 can be shared, and the number of parts can be reduced. Can be planned.

  Further, as shown in FIGS. 1A and 1B, the electrical box 61 is attached to the inside of the housing 2 of the front plate 221 at the substantially central portion in the vertical direction of the housing 2 so as to face the ventilation path. Therefore, heat dissipation from the electrical box 61 can be promoted, and it is not necessary to provide a dedicated heat dissipation means such as an air cooling fan in the electrical box 61.

  Furthermore, since the compressor drive inverter control circuit 604 and the fan drive inverter control circuit 606 are configured by a single microcomputer a1, the number of components is reduced, the assemblability is improved, and the board area to be mounted is reduced. In addition, the thickness of the electric box 61 can be further reduced to ensure a more sufficient ventilation path.

[Second Embodiment]
FIG. 3 is a schematic diagram showing the electric box 62 in the outdoor unit 11 according to the second embodiment of the present invention. As shown in FIG. 3, in the second embodiment, the configuration of the substrate is different from that of the first embodiment described above. In addition, the filter 601, the harmonic suppression control circuit 602, the compressor drive inverter 603, the compressor drive inverter control circuit 604, the fan drive inverter 605, and the fan drive housed in the electric box 62 of the second embodiment. The inverter control circuit 606, the converter 607, and the cycle control circuit 608 are the same as those in the first embodiment except that the configuration of the substrate forming them is different from that in the first embodiment. Are denoted by the same reference numerals, and detailed description thereof is omitted.

  The electrical box 62 houses a noise filter 609, a current sensor 610, and a smoothing circuit 611. Since these are the same as those in the first embodiment, the same parts are denoted by the same reference numerals and the same parts are designated by the same reference numerals. Detailed description is omitted.

  In the second embodiment, the above-described filter 601, harmonic suppression control circuit 602, converter 607, compressor drive inverter 603 and compressor drive inverter control circuit 604 are formed on a single substrate B1 for fan drive. An inverter 605 and a fan drive inverter control circuit 606 are formed on the substrate B2, and a cycle control circuit 608 is formed on the substrate B3. In these substrates, the substrate B1 and the substrate B3 are connected in parallel at the subsequent stage of the noise filter 609, and the substrate B2 is connected at the subsequent stage of the substrate B1. The substrate B1, the substrate B2, and the substrate B3 are different substrates.

  Further, the harmonic suppression control circuit 602 and the compressor drive inverter control circuit 604 are configured by a single microcomputer b1.

  Thus, in the second embodiment, since it is configured by a single electric box 62 as in the first embodiment, it is possible to sufficiently ensure an air ventilation path and to be excellent in waterproofness. . In addition, since the filter 601, the harmonic suppression control circuit 602, the converter 607, the compressor driving inverter 603, and the compressor driving inverter control circuit 604 are formed on a single substrate B1, the thickness of the electric box 62 is reduced. The thickness can be reduced, and the ventilation path can be more sufficiently secured. Furthermore, since the harmonic suppression control circuit 602 and the compressor drive inverter control circuit 604 are configured by a single microcomputer b1, the number of components is reduced, the assemblability is improved, and the board area to be mounted is reduced. It is possible to reduce the thickness of the electric box 62 and secure a more sufficient ventilation path.

[Third Embodiment]
FIG. 4 is a schematic diagram showing an electric box 63 in the outdoor unit 111 according to the third embodiment of the present invention. As shown in FIG. 4, in the third embodiment, the configuration of the substrate is different from that of the first and second embodiments described above. Note that the filter 601, the harmonic suppression control circuit 602, the compressor driving inverter 603, the compressor driving inverter control circuit 604, the fan driving inverter 605, and the fan that are housed in the electric box 63 according to the third embodiment. The drive inverter control circuit 606, the converter 607, and the cycle control circuit 608 are the same as those in the first and second embodiments except that the configuration of the substrate forming them is different from those in the first and second embodiments. Therefore, the same parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  The electrical box 63 houses a noise filter 609, a current sensor 610, and a smoothing circuit 611. Since these are the same as those in the first and second embodiments, the same portions are denoted by the same reference numerals. Detailed description thereof will be omitted.

  In the third embodiment, the above-described filter 601, harmonic suppression control circuit 602, converter 607, compressor drive inverter 603, compressor drive inverter control circuit 604, fan drive inverter 605, and fan drive inverter control circuit. 606 is formed on the single substrate C1, and the cycle control circuit 608 is formed on the substrate C2. In these substrates, the substrate C1 and the substrate C2 are connected in parallel at the subsequent stage of the noise filter 609. Note that the substrate C1 and the substrate C2 described above are different substrates.

  Further, the harmonic suppression control circuit 602, the compressor drive inverter control circuit 604, and the fan drive inverter control circuit 606 are configured by a single microcomputer c1.

  As described above, in the third embodiment, since the single electric box 63 is configured similarly to the first and second embodiments, it is possible to secure a sufficient air ventilation path and waterproof. Excellent in properties. Further, the filter 601, harmonic suppression control circuit 602, converter 607, compressor drive inverter 603, compressor drive inverter control circuit 604, fan drive inverter 605 and fan drive inverter control circuit 606 are formed on a single substrate C 1. Therefore, the thickness of the electric box 63 can be reduced, and the ventilation path can be more sufficiently secured. Further, since the harmonic suppression control circuit 602, the compressor drive inverter control circuit 604, and the fan drive inverter control circuit 606 are configured by a single microcomputer c1, the number of parts is reduced, and the assembly is improved and implemented. The board area can be reduced, and the thickness of the electric box 63 can be made thinner, so that a sufficient ventilation path can be secured.

<Air conditioner>
The air conditioner of the present invention includes the outdoor unit. Hereinafter, an embodiment of the air conditioner of the present invention will be described with reference to FIG. 5, but the air conditioner of the present invention is not limited to the embodiment described in the drawings.

  FIG. 5 is a refrigeration cycle system diagram of the air conditioner of the present invention. As shown in FIG. 5, the air conditioner 10 of the present invention includes an outdoor unit 1 and an indoor unit 9, which are connected to each other by a gas pipe 101 and a liquid pipe 102.

  The outdoor unit 1 includes a compressor 3, a four-way valve 12, a heat exchanger 4, and an outdoor expansion valve 14, which are connected by piping. The outdoor unit 1 includes an electric box 61 that performs inverter control of the compressor 3 and the fan motor 51, control of the heat exchanger 4, the four-way valve 12, and the like. The outdoor unit 1 in FIG. 5 is the same as the outdoor unit 1 in FIG. 1, and therefore, the compressor 3, the heat exchanger 4, and the electric box 61 are denoted by the same reference numerals and detailed description thereof is omitted. To do.

  The four-way valve 12 is a valve that switches the flow of the refrigerant, thereby switching between the cooling operation and the heating operation. The outdoor expansion valve 14 depressurizes the refrigerant to lower the temperature during heating operation.

  The indoor unit 9 includes an indoor heat exchanger 91 and an indoor expansion valve 92, which are connected by piping. The indoor heat exchanger 91 performs heat exchange between the refrigerant and the indoor air. The indoor expansion valve 92 depressurizes the refrigerant to a low temperature during the cooling operation.

  Next, the operation of the air conditioner 10 of the present invention will be described by taking cooling operation as an example. Note that the arrows in FIG. 5 indicate the flow of the refrigerant in the cooling operation of the air conditioner 10.

  In the cooling operation, the four-way valve 12 causes the discharge side of the compressor 3 and the heat exchanger 4 to communicate with each other, and the suction side of the compressor 3 and the gas pipe 101 communicate with each other as indicated by a solid line.

  The high-temperature and high-pressure working gas discharged from the compressor 3 passes through the four-way valve 12 and flows to the heat exchanger 4 side. The gaseous refrigerant that has flowed into the heat exchanger 4 is condensed by exchanging heat with outdoor air supplied by the fan 5 (see FIG. 1), and becomes a liquid refrigerant. The liquid refrigerant passes through the fully-expanded outdoor expansion valve 14 and the liquid pipe 102 and flows into the indoor unit 9. The liquid refrigerant that has flowed into the indoor unit 9 is decompressed by the indoor expansion valve 92 and becomes a low-temperature low-pressure gas-liquid mixed refrigerant. This low-temperature and low-pressure gas-liquid mixed refrigerant flows into the indoor heat exchanger 91 and is heat-exchanged with indoor air supplied by an indoor fan (not shown) to evaporate to become a gaseous refrigerant. At this time, the indoor air is cooled by the latent heat of vaporization of the gas-liquid mixed refrigerant, and cool air is sent into the room. Thereafter, the gaseous refrigerant flowing out from the indoor unit 9 passes through the gas pipe 101 and is returned to the outdoor unit 1.

  The gaseous refrigerant returned to the outdoor unit 1 passes through the four-way valve 12, is sucked into the compressor 3, and is compressed again by the compressor 3, thereby forming a series of refrigeration cycles.

  Thus, since the air conditioner 10 of the present invention includes the outdoor unit 1, it is a component associated with the sharing of the electric box and the necessity of wiring between the electric boxes as compared with the case where a plurality of electric boxes are attached. By reducing the number of points, the volume of the electric box 61 can be reduced, and as a result, a sufficient air flow path in the housing 2 can be secured. Moreover, since it is comprised by the single electrical box 61, since wiring between electrical boxes becomes unnecessary, it is excellent in waterproofness.

  In addition, this invention is not limited to the structure of embodiment mentioned above, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included. Is done.

  For example, in the first embodiment, the filter 601 and the harmonic suppression control circuit 602 are formed on a single substrate A1, and the converter 607, the compressor drive inverter 603, the compressor drive inverter control circuit 604, and the fan drive are formed. The outdoor unit 1 in which the inverter 605 and the fan drive inverter control circuit 606 are formed on the single substrate A2 has been described, but the filter 601 and the harmonic suppression control circuit 602 may be formed on different substrates. Well, a part or all of converter 607, compressor drive inverter 603, compressor drive inverter control circuit 604, fan drive inverter 605 and fan drive inverter control circuit 606 are formed on different substrates. May be.

  In the first embodiment, the outdoor unit 1 in which the compressor driving inverter control circuit 604 and the fan driving inverter control circuit 606 are configured by a single microcomputer a1 has been described. However, the compressor driving inverter control is described. The circuit 604 and the fan drive inverter control circuit 606 may be configured by different microcomputers, or the compressor drive inverter control circuit 604 and / or the fan drive inverter control circuit 606 may not be configured by the microcomputer. Good.

  In the second embodiment, the harmonic suppression control circuit 602 and the compressor drive inverter control circuit 604 have been described for the outdoor unit 11 configured by a single microcomputer b1, but the harmonic suppression control circuit 602 and The compressor drive inverter control circuit 604 may be formed of a different microcomputer, and the harmonic suppression control circuit 602 and / or the compressor drive inverter control circuit 604 may not be formed of a microcomputer.

  In the third embodiment, the outdoor unit 111 in which the harmonic suppression control circuit 602, the compressor drive inverter control circuit 604, and the fan drive inverter control circuit 606 are configured by a single microcomputer c1 has been described. , At least one of the harmonic suppression control circuit 602, the compressor drive inverter control circuit 604, and the fan drive inverter control circuit 606 may be configured by a different microcomputer, the harmonic suppression control circuit 602, At least one of the compressor drive inverter control circuit 604 and the fan drive inverter control circuit 606 may not be configured by a microcomputer.

  Filter 601, harmonic suppression control circuit 602, compressor drive inverter 603, compressor drive inverter control circuit 604, fan drive inverter 605, fan drive inverter control circuit 606, converter 607, cycle control circuit 608, etc. In the case where the number of substrates on which is formed is 2 or more, it is preferable that the plate surfaces of the two or more substrates are arranged on the same plane from the viewpoint of reducing the thickness of the electric box. In one embodiment, it is preferable that plate surfaces of the substrates A1, A2, A3 and the like are arranged on the same plane.

  Moreover, in FIG. 5, although the refrigeration cycle system diagram of the air conditioner 10 using the outdoor unit 1 of the first embodiment has been described, for example, the outdoor unit 11 of the second embodiment and the third embodiment Any outdoor unit may be used as long as the outdoor unit satisfies the configuration of the outdoor unit of the present invention, such as the outdoor unit 111 in the form.

  In addition, although the outdoor unit of this invention can use any power supply, such as single phase alternating current, two-phase alternating current, and three-phase alternating current, as a drive power supply of the said outdoor unit, in order to suppress a harmonic current When using a three-phase AC power source that requires a complicated circuit configuration such as an active filter or an active converter, the volume of the electric box can be particularly reduced.

DESCRIPTION OF SYMBOLS 1, 11, 111 Outdoor unit 2 Case 3 Compressor 4 Heat exchanger 5 Fan 9 Indoor unit 10 Air conditioner 61, 62, 63 Electric box 601 Filter 602 Harmonic suppression control circuit 603 Compressor drive inverter 604 Compressor Drive inverter control circuit 605 Fan drive inverter 606 Fan drive inverter control circuit 607 Converter 608 Cycle control circuit A1, A2, A3, B1, B2, B3, C1, C2 Substrate a1, b1, c1 Microcomputer

Claims (10)

A housing,
A compressor disposed on a bottom plate of the housing;
A heat exchanger disposed on a side plate of the housing;
A fan that is attached to the housing and blows air to the heat exchanger;
A filter for suppressing harmonics;
A harmonic suppression control circuit for controlling the filter;
An inverter for driving the compressor for driving the compressor;
An inverter control circuit for driving the compressor for controlling the inverter for driving the compressor;
A fan driving inverter for driving the fan;
A fan drive inverter control circuit for controlling the fan drive inverter;
A converter that supplies the output of the filter as a rectified current to the compressor driving inverter and the fan driving inverter;
In an outdoor unit of an air conditioner equipped with a cycle control circuit for controlling a refrigeration cycle,
The filter, the harmonic suppression control circuit, the compressor drive inverter, the compressor drive inverter control circuit, the fan drive inverter, the fan drive inverter control circuit, the converter, and the cycle control circuit are single. The outdoor unit is housed in an electric box, and the electric box is mounted in the housing.   The outdoor unit according to claim 1, wherein the fan is disposed on an upper portion of the housing facing the bottom plate.   The outdoor unit according to claim 1 or 2, wherein the filter and the harmonic suppression control circuit are formed on a single substrate.   The outdoor unit according to claim 3, wherein the filter, the harmonic suppression control circuit, the converter, the compressor drive inverter, and the compressor drive inverter control circuit are formed on a single substrate.   The outdoor unit according to claim 4, wherein the harmonic suppression control circuit and the compressor drive inverter control circuit are configured by a single microcomputer.   4. The filter circuit, the harmonic suppression control circuit, the converter, the compressor drive inverter, the compressor drive inverter control circuit, the fan drive inverter, and the fan drive inverter control circuit are formed on a single substrate. The outdoor unit described.   The outdoor unit according to claim 6, wherein the harmonic suppression control circuit, the compressor drive inverter control circuit, and the fan drive inverter control circuit are configured by a single microcomputer.   4. The converter, the inverter for driving the compressor, the inverter control circuit for driving the compressor, the inverter for driving the fan, and the inverter control circuit for driving the fan are formed on a single substrate. The outdoor unit described.   The outdoor unit according to claim 8, wherein the compressor drive inverter control circuit and the fan drive inverter control circuit are configured by a single microcomputer.   An air conditioner comprising the outdoor unit according to any one of claims 1 to 9.

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