JP2014114982A - Compressor unit and refrigerating cycle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compressor unit that can efficiently cool an electrical equipment box.SOLUTION: A compressor unit 11 is configured by connecting a compressor 25, an outdoor heat exchanger 61, an expansion valve 31 and an indoor heat exchanger 33 with refrigerant piping, and by storing the compressor 25 of a refrigerant circuit 3. The compressor unit includes: an electrical equipment box 23 including a diode module 101 for converting AC power into DC power, and a power module 107 having a power device and converting the AC power into the DC power to drive the compressor 25; a heat sink 121 provided by coming into surface contact to at least one of the diode module 101 and the power module 107, and having a heat dissipation fin 122 for transferring heat; and a blower 141 provided at a position opposed to the heat dissipation fin 122, and sending air to the heat sink 121. The low temperature side refrigerant piping with low temperature refrigerant circulating therethrough among the refrigerant piping is provided at an intake side of the blower 141.

Description

  The present invention relates to a compressor unit and a refrigeration cycle apparatus.

  In a conventional refrigeration cycle apparatus, a low-temperature side refrigerant pipe through which a low-temperature refrigerant flows is arranged in the vicinity of an intake port of an electrical box provided in the outdoor unit, and air cooled by the low-temperature side refrigerant pipe is taken into the intake of the electrical box. There has been a refrigeration cycle apparatus that cools the interior of an outdoor unit by sending it from the mouth to the electrical components inside the electrical box by the negative pressure action of the heat exchanger fan (see, for example, Patent Document 1).

  Further, in the conventional refrigeration cycle apparatus, a refrigerant jacket in which a low-temperature refrigerant pipe through which a low-temperature refrigerant flows is embedded is provided on a heat transfer plate that is surface-bonded to the power element, and the refrigerant jacket is interposed via the heat transfer plate. There has been a refrigeration cycle apparatus for cooling a power element (see, for example, Patent Document 2).

JP 2007-285544 A (paragraph [0014]) JP 2010-175225 A (paragraph [0049])

  In the conventional refrigeration cycle apparatus (Patent Document 1), cooled air is directly supplied to electrical components. Therefore, the electrical component has been adversely affected by dust or dust.

  Further, in the conventional refrigeration cycle apparatus (Patent Document 2), since the low temperature side refrigerant pipe is embedded in the refrigerant jacket, when the low temperature side refrigerant pipe is provided, the arrangement location must be determined in units of the refrigerant jacket. . Therefore, there is a restriction due to the refrigerant jacket at the location where the low temperature side refrigerant pipe is arranged.

  Therefore, in the conventional refrigeration cycle apparatus (Patent Documents 1 and 2), it is not possible to prevent adverse effects such as dust or dust on electric parts, and the location of the low-temperature side refrigerant piping is also restricted due to the refrigerant jacket. There was a problem.

  The present invention has been made in order to solve the above-described problems, and can prevent adverse effects such as dust or dust on electric parts, and the location of the low-temperature side refrigerant piping is also restricted due to the refrigerant jacket. It is an object of the present invention to provide a compressor unit and a refrigeration cycle apparatus that can be prevented from receiving.

  The present invention provides a compressor unit in which a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger are connected by a refrigerant pipe, and a refrigerant circuit that circulates a refrigerant that circulates through the refrigerant pipe contains the compressor. A diode module that converts AC power into DC power; and a power module that includes a power device, converts the DC power into AC power, and drives the compressor; and A heat sink having heat dissipation fins that are provided in surface contact with at least one of the diode module and the power module, and a blower that is provided at a position facing the heat dissipation fins and blows air to the heat sink; A low-temperature side refrigerant pipe through which the low-temperature refrigerant flows is a compressor unit provided on the intake side of the blower. That.

  In the present invention, a heat sink is provided in an electrical component, a low-temperature side refrigerant pipe through which a low-temperature refrigerant flows is provided on an intake side of a blower that blows air to the heat sink, and cooling air sucked by the blower is blown to the heat sink. Therefore, adverse effects such as dust or dust on the electrical components can be prevented. Moreover, since the arrangement | positioning location of the low temperature side refrigerant | coolant piping resulting from a refrigerant | coolant jacket is not received, a low temperature side refrigerant | coolant piping can be arrange | positioned in an appropriate location.

  Therefore, it has the effect that the electrical equipment box that houses the electrical components can be efficiently cooled.

It is a figure which shows an example of schematic structure of the refrigerating-cycle apparatus 1 in Embodiment 1 of this invention. It is a top view which shows an example when the outdoor heat exchange unit 13 in Embodiment 1 of this invention is seen from the upper surface. It is a front view which shows an example when the outdoor heat exchange unit 13 in Embodiment 1 of this invention is seen from the front. It is a side view which shows an example when the outdoor heat exchange unit 13 in Embodiment 1 of this invention is seen from the side. It is a figure which shows an example of a structure of the refrigerant circuit 3 of the refrigerating-cycle apparatus 1 in Embodiment 1 of this invention. It is a figure which shows the circuit structural example explaining the electrical connection state of the electrical equipment box 23 in Embodiment 1 of this invention using the switching element 111. FIG. It is a perspective view which shows an example of the positional relationship of the air blower 141a with respect to the electrical equipment box 23 in Embodiment 1 of this invention, and the air blower 141b. It is a side view which shows an example of the positional relationship of the air blower 141 with respect to the electrical equipment box 23 in Embodiment 1 of this invention. It is a top view which shows an example of the positional relationship of the air blower 141 with respect to the electrical equipment box 23 in Embodiment 1 of this invention. It is a side view which shows an example when the flow direction of the wind of the air blower 141 provided in the electrical equipment box 23 in Embodiment 1 of this invention is seen from the side surface. It is a perspective view which shows an example of the positional relationship of the low temperature side piping in the housing | casing 21 in Embodiment 1 of this invention. It is a perspective view which shows an example of the positional relationship of the low temperature side piping in the housing | casing 21 in Embodiment 2 of this invention. It is a perspective view which shows an example of the positional relationship of the low temperature side piping in the housing | casing 21 in Embodiment 3 of this invention. It is a figure which shows an example of a structure of the machine room 181 which accommodated the compressor unit 11 in Embodiment 4 of this invention.

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

Embodiment 1 FIG.
In the first embodiment, a heat sink is provided in an electrical component, a low-temperature side refrigerant pipe through which a low-temperature refrigerant flows is provided on the intake side of the blower that blows air to the heat sink, and the cooling air around the low-temperature side refrigerant pipe sucked in by the blower is Ventilate the heat sink. Therefore, this Embodiment 1 prevents the bad influences, such as dust or dust, with respect to an electrical component. Moreover, in this Embodiment 1, since the restriction | limiting of the arrangement | positioning location of a low temperature side refrigerant | coolant piping is not received, a low temperature side refrigerant | coolant piping is arrange | positioned in an appropriate location. Therefore, in this Embodiment 1, the electrical equipment box which accommodated the electrical component is cooled efficiently. Details of the first embodiment will be described below.

  FIG. 1 is a diagram showing an example of a schematic configuration of a refrigeration cycle apparatus 1 according to Embodiment 1 of the present invention. As shown in FIG. 1, the refrigeration cycle apparatus 1 according to the first embodiment is a remote refrigerator that includes a compressor unit 11, an outdoor heat exchange unit 13, and an indoor heat exchange unit 15.

  The compressor unit 11 houses an electrical box 23a, an electrical box 23b, a compressor 25a, and a compressor 25b in a housing 21. In addition, when not distinguishing especially the electrical equipment box 23a and the electrical equipment box 23b, they are called the electrical equipment box 23. FIG. Further, when the compressor 25a and the compressor 25b are not particularly distinguished, they are referred to as a compressor 25. Since the compressor 25 is heavy, it is fixedly installed on the bottom of the casing 21 (base 17 described later with reference to FIG. 11).

  The outdoor heat exchange unit 13 is connected to the compressor unit 11 via a refrigerant pipe 75 and a refrigerant pipe 77, details of which will be described later. The indoor heat exchange unit 15 includes an expansion valve 31 and an indoor heat exchanger 33, and is connected to the compressor unit 11 via a refrigerant pipe 71 and a refrigerant pipe 73.

  FIG. 2 is a top view showing an example when the outdoor heat exchange unit 13 according to Embodiment 1 of the present invention is viewed from above. As shown in FIG. 2, the outdoor heat exchange unit 13 includes an air suction port 41a and an air suction port 41b. The outdoor heat exchange unit 13 includes an air outlet 42a, an air outlet 42b, an air outlet 42c, and an air outlet 42d. The air suction port 41 a and the air suction port 41 b are respectively formed on the side surfaces of the outdoor heat exchange unit 13.

  The air outlet 42a, the air outlet 42b, the air outlet 42c, and the air outlet 42d are formed on the upper surface side of the outdoor heat exchange unit 13 at a predetermined interval. Note that the air suction port 41a and the air suction port 41b are referred to as the air suction port 41 when not particularly distinguished. The air outlet 42a, the air outlet 42b, the air outlet 42c, and the air outlet 42d are referred to as the air outlet 42 when not particularly distinguished.

  FIG. 3 is a front view showing an example when the outdoor heat exchange unit 13 according to Embodiment 1 of the present invention is viewed from the front. As shown in FIG. 3, the outdoor heat exchange unit 13 includes an opening on the side surface, and an air suction port 41 b is formed in the opening. In addition, although illustration is abbreviate | omitted, in the position opposite to the side surface side of the outdoor heat exchange unit 13 shown in FIG. 3 and facing the air suction port 41b, as will be described later with reference to FIG. Is formed.

  FIG. 4 is a side view showing an example of the outdoor heat exchange unit 13 according to Embodiment 1 of the present invention when viewed from the side. As shown in FIG. 4, the outdoor heat exchange unit 13 is provided with an outdoor heat exchanger 61a and an outdoor heat exchanger 61b in a space formed between the air suction port 41a and the air suction port 41b. The outdoor heat exchanger 61a is provided on the air suction port 41a side, and the outdoor heat exchanger 61b is provided on the air suction port 41b side. The outdoor heat exchanger 61a and the outdoor heat exchanger 61b are opposed to each other so that they are close to each other on the bottom surface side of the outdoor heat exchange unit 13 and are differently separated on the top surface side of the outdoor heat exchange unit 13. Is provided.

  That is, when the outdoor heat exchange unit 13 is viewed from the side, the outdoor heat exchanger 61a and the outdoor heat exchanger 61b are provided so as to be substantially V-shaped. In addition, when the outdoor heat exchanger 61a and the outdoor heat exchanger 61b are not particularly distinguished, they are referred to as the outdoor heat exchanger 61.

  Also, as shown in FIG. 4, a fan 43a is provided below the air outlet 42a, and a fan 43b is provided below the air outlet 42b. Note that the fan 43a and the fan 43b are referred to as the fan 43 unless particularly distinguished. The fan 43 is formed of, for example, a propeller fan, but is not particularly limited thereto.

  The wind direction around the outdoor heat exchange unit 13 will be described. When the fan 43 starts driving, a negative pressure is generated inside the outdoor heat exchange unit 13, so that the following air flow is generated around the outdoor heat exchange unit 13. On the air suction port 41a side, ambient air is sucked along the wind direction 51a and the wind direction 51b. On the air suction port 41b side, ambient air is sucked along the wind direction 52a and the wind direction 52b. On the air outlet 42a side, air is blown out along the wind direction 53a. On the air outlet 42b side, air is blown out along the wind direction 53b.

  FIG. 5 is a diagram illustrating an example of the configuration of the refrigerant circuit 3 of the refrigeration cycle apparatus 1 according to Embodiment 1 of the present invention. The refrigerant circuit 3 includes a compressor 25, an outdoor heat exchanger 61, a liquid receiver 29, an expansion valve 31, an indoor heat exchanger 33, and an accumulator 27. In the refrigerant circuit 3, the compressor 25 and the outdoor heat exchanger 61 are connected via a refrigerant pipe 75. In the refrigerant circuit 3, the outdoor heat exchanger 61 and the liquid receiver 29 are connected via a refrigerant pipe 77. In the refrigerant circuit 3, the liquid receiver 29 and the expansion valve 31 are connected via a refrigerant pipe 71. In the refrigerant circuit 3, the expansion valve 31 and the indoor heat exchanger 33 are connected via a refrigerant pipe 72. In the refrigerant circuit 3, the indoor heat exchanger 33 and the accumulator 27 are connected via a refrigerant pipe 73. In the refrigerant circuit 3, the accumulator 27 and the compressor 25 are connected via a refrigerant pipe 79.

  That is, the refrigerant circuit 3 includes the compressor 25, the outdoor heat exchanger 61, the liquid receiver 29, the expansion valve 31, the indoor heat exchanger 33, and the accumulator 27. The refrigerant pipe 71, the refrigerant pipe 72, the refrigerant pipe 73, and the refrigerant pipe 75, the refrigerant pipe 77, and the refrigerant pipe 79 are connected to circulate the refrigerant.

  As described above, since the refrigeration cycle apparatus 1 is a remote chiller including the compressor unit 11, the outdoor heat exchange unit 13, and the indoor heat exchange unit 15, the refrigerant circuit 3 includes the compressor unit 11. The outdoor heat exchange unit 13 and the indoor heat exchange unit 15 are provided.

  The compressor unit 11 includes a compressor 25, an accumulator 27, and a liquid receiver 29. The compressor unit 11 houses an electrical box 23. The outdoor heat exchange unit 13 includes an outdoor heat exchanger 61. As described above, the indoor heat exchange unit 15 includes the expansion valve 31 and the indoor heat exchanger 33.

  The main components of the compressor unit 11 will be described. The compressor 25 can change the operating capacity. The compressor 25 is composed of, for example, a positive displacement compressor driven by a brushless DC motor 93 as will be described later with reference to FIG.

  In addition, although the compressor 25 is comprised with an inverter type compressor, what is necessary is just to be able to perform inverter control. For example, a reciprocating compressor, a rotary compressor, a scroll compressor, a screw compressor, or the like may be used.

  A refrigerant pipe 75 is connected to the discharge side of the compressor 25. A refrigerant pipe 79 is connected to the suction side of the compressor 25. Although details will be described later with reference to FIG. 6, the electrical box 23 supplies power for driving the compressor 25.

  The main components of the outdoor heat exchange unit 13 will be described. The outdoor heat exchanger 61 functions as a condenser. The outdoor heat exchanger 61 is provided with a temperature sensor (not shown) to detect the ambient temperature of the space in which the outdoor heat exchanger 61 is installed, that is, the temperature of the air with which the outdoor heat exchanger 61 exchanges heat. The The refrigerant pipe 77 may be provided with a temperature sensor (not shown), and the temperature of the refrigerant pipe 77 may be detected.

  Main components of the indoor heat exchange unit 15 will be described. The indoor heat exchanger 33 functions as an evaporator. The refrigerant pipe 72 that connects the indoor heat exchanger 33 and the expansion valve 31 may be provided with a temperature sensor (not shown) to detect the temperature of the refrigerant pipe 72.

  The expansion valve 31 corresponds to the expansion means in the present invention. Moreover, the refrigerant | coolant piping 73 and the refrigerant | coolant piping 79 are corresponded to the low temperature side refrigerant | coolant piping in this invention. Moreover, the temperature sensor demonstrated above shows an example, and it does not specifically limit to this. The type of sensor is not particularly limited, and a pressure sensor or the like may be provided.

  In the above description, an example in which a four-way valve is not provided has been described, but a four-way valve may be provided. Further, the number of compressors 25, the number of outdoor heat exchange units 13, and the number of indoor heat exchange units 15 are not particularly limited.

  Further, the temperature of the refrigerant sucked into the compressor 25 is in a temperature range of about −30 to + 30 ° C. For this reason, the temperature of the refrigerant | coolant which distribute | circulates the refrigerant | coolant piping 79 and the refrigerant | coolant piping 73 is a thing of the temperature range of the range of about -30- + 30 degreeC. In order to obtain a lower temperature, although not shown, a two-stage compression refrigeration apparatus may be used. In this case, the temperature of the refrigerant sucked into the first stage compressor is in the temperature range of about −50 to −70 ° C. On the other hand, the temperature of the refrigerant discharged from the second stage compressor is in the temperature range of about +60 to + 120 ° C.

In addition, as a refrigerant used, for example, a single refrigerant such as R-22 and R-134a, a pseudo azeotropic refrigerant mixture such as R-410A and R-404A, a non-azeotropic refrigerant mixture such as R-407C, A refrigerant having a relatively low global warming potential such as CF ₃ CF═CH ₂ containing a double bond in the chemical formula or a mixture thereof, or a natural refrigerant such as CO ₂ or propane may be used. .

  FIG. 6 is a diagram illustrating a circuit configuration example for explaining the electrical connection state of the electrical equipment box 23 according to the first embodiment of the present invention using the switching element 111. As shown in FIG. 6, an AC power supply 91 is connected to the electrical equipment box 23. A brushless DC motor 93 is connected to the electrical box 23. A printed circuit board 95 is accommodated in the electrical box 23. The printed circuit board 95 includes a diode module 101, a reactor 103, a capacitor 105, a power module 107, and a control circuit 109. The diode module 101 is connected to an AC power supply 91 and is formed by a diode bridge. The diode module 101 rectifies the AC voltage supplied from the AC power supply 91 into a DC voltage. Reactor 103 improves the power factor. The capacitor 105 smoothes the rectified direct current and supplies it to the power module 107.

  That is, the diode module 101, the reactor 103, and the capacitor 105 rectify the AC voltage supplied from the AC power supply 91 and convert it to DC, and supply the smoothed DC to the power module 107. The AC power supply 91 is a commercial power supply, for example.

  The power module 107 is connected to the output side of the capacitor 105 on the input side, and is connected to the brushless DC motor 93 on the output side. The power module 107 controls the drive of the brushless DC motor 93 by converting the smoothed DC into a PWM signal in accordance with the gate signal supplied from the control circuit 109 and supplying the PWM signal to the brushless DC motor 93. The brushless DC motor 93 generates a rotating magnetic field in accordance with the supplied PWM signal, and controls the driving of the compressor 25 described above with reference to FIGS. 1 and 5.

  That is, the power module 107 is a power conversion circuit formed by a three-phase PWM (pulse width modulation) inverter, and supplies AC power having different phases to each phase of the brushless DC motor 93.

  The power module 107 is formed of a semiconductor power device using a wide band gap semiconductor, which will be described later in detail. Such semiconductor power devices are, for example, switching element 111 and commutation diode 113. The drain electrode of the switching element 111 and the cathode electrode of the commutation diode 113 are connected. The source electrode of the switching element 111 and the anode electrode of the commutation diode 113 are connected. A gate electrode of the switching element 111 is connected to the control circuit 109.

  The control circuit 109 includes, for example, a gate drive circuit and supplies a gate signal to the power module 107. The control circuit 109 includes a microprocessor unit, and controls driving of various actuators based on detection results of a temperature sensor and a pressure sensor (not shown) and instructions from a remote controller (not shown). For example, the control circuit 109 controls the driving frequency of the compressor 25 by controlling the gate signal, and executes the heating operation or the cooling operation. In FIG. 6, the description of various actuators is omitted.

  The switching element 111 corresponds to a power device in the present invention. The commutation diode 113 corresponds to the diode element in the present invention. The brushless DC motor 93 corresponds to the electric motor in the present invention.

  In FIG. 6, only one set of the switching element 111 and the commutation diode 113 is illustrated, but actually, a plurality of sets are mounted, and the direct current is changed to an alternating current according to the on / off operation of the switching element 111. Converted. Moreover, since the process in which the alternating current is converted from direct current by the operation of the switching element 111 is easily understood by those skilled in the art, the description thereof is omitted.

  A wide band gap semiconductor will be described. The wide band gap semiconductor is a semiconductor having a band gap larger than 2 [eV], such as a nitride semiconductor such as gallium nitride (GaN), silicon carbide (SiC), or diamond. It is a high element. For example, the band gap of gallium nitride (GaN) is 3.4 [eV], and the band gap of silicon carbide (SiC) is 3.2 [eV]. For example, the breakdown electric field strength of gallium nitride (GaN) is 3.0 [MV / cm], and the breakdown electric field strength of silicon carbide (SiC) is 3.0 [MV / cm]. On the other hand, silicon (Si) conventionally used as a material for circuit elements has a band gap of 1.1 [eV] and a dielectric breakdown electric field strength of 0.3 [MV / cm].

  The fact that the breakdown field strength is large and the band gap width is large means that the on-resistance can be lowered by thinning the element while maintaining the breakdown voltage. If the on-resistance can be lowered, power loss can be reduced. If the power loss can be reduced, the calorific value is reduced. If the calorific value can be reduced, the temperature will hardly rise even if the module is downsized and the heat capacity is reduced.

  The band gap here refers to an energy region in which electrons cannot exist within the substance. The dielectric breakdown electric field strength here means the maximum electric field strength that causes dielectric breakdown in a semiconductor or an insulator.

  From the above, the wide band gap semiconductor has a band gap width about 3 times wider and a breakdown field strength about 10 times larger than a conventional element formed of silicon (Si). Therefore, the heat resistance and voltage resistance are higher than those of an element formed of silicon. High heat resistance is equivalent to being able to operate at high temperatures. Therefore, the cooling structure can be miniaturized by using the wide band gap semiconductor.

In addition, gallium nitride (GaN) or silicon carbide (SiC) has a higher electric field saturation rate than silicon (Si). For example, in the case of gallium nitride (GaN), it is 2.7 [1 × 10 ⁷ cm / s], and in the case of silicon carbide (SiC), it is 1.0 [1 × 10 ⁷ cm / s]. A high electric field saturation speed is equivalent to the fact that high-frequency driving is possible. If high-frequency driving is possible, it is possible to reduce the size of peripheral components.

  As described above, the switching element 111 and the commutation diode 113 are formed of a wide band gap semiconductor. Since the switching element 111 and the commutation diode 113 have high voltage resistance and high allowable current density, the switching element 111 and the commutation diode 113 can be downsized. Further, since the heat resistance is also high, it is possible to reduce the size of heat dissipating fins 122a of the heat sink 121a and heat dissipating fins 122b of the heat sink 121b described later. Therefore, the power module 107 can be further reduced in size.

  Furthermore, since the power loss is low, the switching element 111 and the commutation diode 113 can be highly efficient, and thus the power module 107 can be highly efficient.

  Note that both the switching element 111 and the commutation diode 113 are preferably formed of a wide band gap semiconductor, but either one of the elements may be formed of a wide band gap semiconductor. The effects described in the first embodiment can be obtained.

  Note that the diode module 101 and the power module 107 serve as heat generation sources. For example, each diode forming the diode module 101 is overheated by overcurrent. Further, the switching element 111 and the commutation diode 113 forming the power module 107 are overheated by overcurrent. Each diode, the switching element 111, and the commutation diode 113 forming the diode module 101 are destroyed when the heat resistance temperature is exceeded.

  Therefore, a heat sink 121a and a heat sink 121b, which will be described later, are provided on the end face sides of the diode module 101 and the power module 107 that serve as heat sources. The heat sink 121 a and the heat sink 121 b are provided so as to be exposed to the outside of the electrical equipment box 23.

  The heat sink 121a and the heat sink 121b are attached from the outside of the electrical box 23. However, openings corresponding to the electrical box 23 are provided with openings that expose the heat sink fins 122a of the heat sink 121a and the heat sink fins 122b of the heat sink 121b. It may be done.

  FIG. 7 is a perspective view showing an example of the positional relationship between the blower 141a and the blower 141b with respect to the electrical equipment box 23 according to Embodiment 1 of the present invention. As shown in FIG. 7, the electrical box 23 is provided with a heat sink 121a and a heat sink 121b. The heat sink 121a is formed by providing a plurality of heat radiation fins 122a at a predetermined pitch interval. The heat sink 121b is formed by providing a plurality of heat radiation fins 122b at a predetermined pitch interval. Each of the heat radiation fins 122a and the heat radiation fins 122b is provided in a direction along the substantially vertical direction, and is formed in a shape having a longitudinal direction. The shape in the longitudinal direction is oriented along a substantially vertical direction.

  The mounting plate 131 is provided so as to cover the radiation fins 122a and the radiation fins 122b. The blower 141a is provided via a mounting plate 131 at a position facing the heat dissipating fins 122a. The blower 141b is provided via a mounting plate 131 at a position facing the heat dissipating fins 122b.

  Note that the heat sink 121a and the heat sink 121b are referred to as the heat sink 121 unless otherwise distinguished. In addition, the heat radiating fins 122a and the heat radiating fins 122b are referred to as heat radiating fins 122 when not particularly distinguished. Moreover, when not distinguishing especially the air blower 141a and the air blower 141b, it is called the air blower 141.

  In the above description, an example in which the blower 141 is provided via the mounting plate 131 has been described, but the mounting plate 131 may not be provided. In this case, the blower 141 may be fixed at a position facing the heat sink 121. For example, the blower 141 may be fixed by providing a beam that supports the blower 141 and providing a support that supports the beam. That is, the blower 141 may be fixed only by the framework, and the fixing method is not particularly limited.

  FIG. 8 is a side view showing an example of the positional relationship of the blower 141 with respect to the electrical equipment box 23 according to Embodiment 1 of the present invention. As shown in FIG. 8, the radiation fins 122 are provided outside the electrical equipment box 23. The mounting plate 131 is provided at a position that covers the entire radiation fin 122. The blower 141 is attached by a mounting plate 131 and is provided at a position facing the heat dissipating fins 122.

  FIG. 9 is a top view showing an example of the positional relationship of the blower 141 with respect to the electrical equipment box 23 in Embodiment 1 of the present invention. As shown in FIG. 9, a printed circuit board 95 is accommodated in the electrical box 23. A diode module 101 and a power module 107 are mounted on the printed board 95. The diode module 101 is provided with a heat sink 121a. The power module 107 is provided with a heat sink 121b.

  The mounting plate 131 is formed at a position covering the heat sink 121a and the heat sink 121b. The blower 141a is provided via a mounting plate 131 at a position facing the heat sink 121a. The blower 141b is provided via a mounting plate 131 at a position facing the heat sink 121a. The mounting plate 131 has an opening at a place where the blower 141a is provided, and an opening is formed at a place where the blower 141b is provided.

  For this reason, when the blower 141a starts driving, the air taken in by the blower 141a is supplied to the heat sink 121a. Moreover, when the air blower 141b starts driving, the air taken in by the air blower 141b is supplied to the heat sink 121b. At this time, the heat of the diode module 101 is transferred in the heat sink 121a, and the heat transferred to the heat sink 121a is transferred to the ambient air outside the electrical box 23. Further, the heat of the power module 107 is transferred in the heat sink 121b, and the heat transferred to the heat sink 121b is transferred to the ambient air outside the electrical equipment box 23.

  For this reason, when the blower 141a is driven, the heat sink 121a is cooled, and heat exchange between the heat sink 121a and ambient air outside the electrical equipment box 23 is promoted. Further, when the blower 141b is driven, the heat sink 121b is cooled, and heat exchange between the heat sink 121b and ambient air outside the electrical equipment box 23 is promoted.

  The heat sink 121a is provided in direct contact with the diode module 101. If a heat transfer plate is provided between the heat sink 121a and the diode module 101, since the heat transfer plate includes a thermal resistance, it is desirable that there is no heat transfer plate for the purpose of cooling. For the same reason, the heat sink 121b is provided in direct contact with the power module 107.

  FIG. 10 is a side view showing an example when the flow direction of the wind of the blower 141 provided in the electrical equipment box 23 in Embodiment 1 of the present invention is viewed from the side. As shown in FIG. 10, when the blower 141 starts driving, ambient air around the electrical box 23 is supplied to the heat radiating fins 122 along the intake air direction 171. The ambient air supplied to the radiating fins 122 is discharged along the exhaust air direction 173a and the exhaust air direction 173b because the longitudinal direction of the radiating fins 122 is formed along the substantially vertical direction.

  At this time, the exhaust air direction 173a and the exhaust air direction 173b are described in directions slightly apart from the electrical equipment box 23, which are respectively along the upper surface panel 16 and the base 17 of the housing 21 described later with reference to FIG. This is because the exhausted air flows.

  FIG. 11 is a perspective view showing an example of the positional relationship of the low temperature side pipes in the casing 21 according to Embodiment 1 of the present invention. As shown in FIG. 11, the housing 21 is formed of an upper panel 16, a base 17, a side panel 18a, a side panel 18b, a side panel 18c, and a side panel 18d. Note that the side panel 18a, the side panel 18b, the side panel 18c, and the side panel 18d are referred to as the side panel 18 unless particularly distinguished.

  In addition, in order to avoid the influence of flooding, the electrical box 23 is provided on the middle side inside the housing 21 and above the compressor 25. Further, the electrical box 23 is formed in a shape having a longitudinal direction, and the electrical box 23 is arranged so that the longitudinal direction of the electrical box 23 is along the base 17, that is, substantially parallel to the base 17. Is provided inside the housing 21.

  Here, the electrical box 23 has a length in the longitudinal direction of about 1 m, for example. The length of one piece of the blower 141 is about 120 mm, for example. The length of the heat sink 121 in the substantially vertical direction is, for example, about 200 mm. The diameters of the refrigerant pipe 73 and the refrigerant pipe 79 are about 20 to 30 mm. In addition, the numerical value demonstrated above shows an example, and it does not specifically limit to this.

  In the above description, an example in which two heat sinks 121 are provided has been described. However, the present invention is not particularly limited thereto. For example, one heat sink 121 that contacts both the diode module 101 and the power module 107 may be provided. Further, in the case of a module in which the diode module 101 and the power module 107 are integrated, a heat sink 121 having a size suitable for the integrated module may be provided.

  Moreover, although said example demonstrated the example in which the two air blowers 141 were provided, it does not specifically limit to this.

  Further, the shape of the electrical box 23 is not particularly limited. The shape of the casing 21 of the compressor unit 11 and the size and shape of each component inside the compressor unit 11 described above are merely examples, and are not particularly limited.

  The refrigerant pipe 73 is a pipe through which a low-temperature refrigerant flows, and is connected to the accumulator 27. The refrigerant pipe 79 is a pipe through which a low-temperature refrigerant flows. Since the refrigerant pipe 79 is provided between the accumulator 27 and the suction side of the compressor 25, a first end which is one end of the refrigerant pipe 79 is connected to the accumulator 27. The second end, which is the other end of the refrigerant pipe 79, is connected to the compressor 25. As shown in FIG. 11, the refrigerant pipe 73 and the refrigerant pipe 79 are provided on the intake side of the blower 141a and the blower 141b. Since the low-temperature refrigerant flows through the refrigerant pipe 73 and the refrigerant pipe 79, the ambient air around the refrigerant pipe 73 and the refrigerant pipe 79 becomes cooled cooling air.

  When the blower 141a and the blower 141b start to drive, the cooling air is sucked in. The cooling air supplied from the blower 141a and the blower 141b is supplied to the heat sink 121a and the heat sink 121b. In the heat sink 121a and the heat sink 121b, heat exchange is performed between the heat supplied from the diode module 101 and the heat supplied from the power module 107 and the cooling air supplied from the blower 141a and the blower 141b. And the air exhausted from the heat sink 121a and the heat sink 121b moves along the exhaust air direction 173a and the exhaust air direction 173b.

  Therefore, the amount of heat radiated by the exhausted air is reduced. In other words, the heat sink 121 is provided in the electrical components such as the diode module 101 and the power module 107, and the refrigerant pipe 73 and the refrigerant that are low-temperature refrigerant pipes in which the low-temperature refrigerant flows to the intake side of the blower 141 that blows air to the heat sink 121. A pipe 79 is provided, and the cooling air sucked by the blower 141 is blown to the heat sink 121.

  For this reason, cooling air is not directly blown to the electrical components such as the diode module 101 and the power module 107. As a result, adverse effects such as dust or dust on the electrical components can be prevented. Further, since the low temperature side refrigerant pipe is not fixed by the refrigerant jacket or the like, there is no restriction on the location of the low temperature side refrigerant pipe due to the refrigerant jacket. For this reason, a low temperature side refrigerant | coolant piping can be arrange | positioned in a suitable location. Therefore, it is possible to efficiently cool the electrical equipment box 23 that houses electrical components.

  Further, in the first embodiment, the heat sink 121 is not cooled by the refrigerant pipe 73 and the refrigerant pipe 79 which are the low temperature side refrigerant pipes being in direct contact with the heat sink 121, but the surroundings cooled by the low temperature side refrigerant pipe The heat sink 121 is cooled by the cooling air being blown by the blower 141.

  For this reason, the heat sink 121 can be prevented from being condensed due to a temperature difference between the refrigerant pipe 73 and the refrigerant pipe 79 and the heat sink 121. For example, since condensation on the heat sink 121 does not occur, there is no possibility that the diode in the diode module 101 and the power module 107 in contact with the heat sink 121, the switching element 111, the commutation diode 113, and the like are damaged.

  In the first embodiment, as described above, the cooling air around the refrigerant pipe 73 and the refrigerant pipe 79 is used for cooling the heat sink 121. For this reason, the degree of freedom in structural design is higher than that in which the refrigerant pipe 73 and the refrigerant pipe 79 are in direct contact with the heat sink 121. For this reason, various costs can be reduced.

  Further, in the first embodiment, since the blower 141 sucks the cooling air around the refrigerant pipe 73 and the refrigerant pipe 79, it is not necessary to increase the rotational speed of the blower 141 in accordance with the amount of exhaust heat of the heat sink 121. That is, the heat sink 121 can be sufficiently cooled while the rotation speed of the blower 141 remains constant. Therefore, the lifetime of the blower 141 can be extended.

  In the above description, an example in which the refrigerant pipe 73 and the refrigerant pipe 79 are provided on the intake side of the blower 141 has been described, but the present invention is not particularly limited thereto. For example, even if the refrigerant pipe 73 and the refrigerant pipe 79 are provided at locations away from the intake side of the blower 141, the cooling air cooled by the refrigerant pipe 73 and the refrigerant pipe 79 is transmitted to the intake side of the blower 141. Good. For example, by providing a duct between the refrigerant pipe 73 and the refrigerant pipe 79 and the intake side of the blower 141, the cooling air around the refrigerant pipe 73 and the refrigerant pipe 79 may be transmitted to the intake side of the blower.

  In addition, the arrangement of the electrical box 23 inside the housing 21 described in the above description is an example, and is not particularly limited thereto. You may arrange | position in the place which can cool more effectively according to the arrangement | positioning location of the refrigerant | coolant piping 73 and the refrigerant | coolant piping 79. FIG.

  As described above, in the first embodiment, the compressor 25, the outdoor heat exchanger 61, the expansion valve 31, and the indoor heat exchanger 33 are connected by the refrigerant pipe, and the refrigerant that circulates the refrigerant flowing through the refrigerant pipe. The compressor unit 11 in which the compressor 25 of the circuit 3 is housed, which has a diode module 101 that converts AC power into DC power, and a power device, converts DC power into AC power, An electric box 23 having a power module 107 to be driven; a heat sink 121 provided with at least one of the diode module 101 and the power module 107 in surface contact; An air blower 141 that blows air to the heat sink 121, and is provided at a position facing the heat sink 121. The low temperature-side refrigerant pipe whose serial refrigerant flows the compressor unit 11 is configured which is provided on the intake side of the blower 141.

  With the above configuration, it is possible to prevent adverse effects such as dust or dust on the electrical components. Moreover, since the arrangement | positioning location of the low temperature side refrigerant | coolant piping resulting from a refrigerant | coolant jacket is not received, a low temperature side refrigerant | coolant piping can be arrange | positioned in an appropriate location. Therefore, it is possible to efficiently cool the electrical box that houses the electrical components.

  In the first embodiment, the refrigerant pipe 79 connected to the compressor 25 among the low-temperature side refrigerant pipes constitutes the compressor unit 11 provided on the intake side of the blower 141.

  With the above configuration, it is possible to prevent adverse effects such as dust or dust on the electrical components. Moreover, since the arrangement | positioning location of the low temperature side refrigerant | coolant piping resulting from a refrigerant | coolant jacket is not received, a low temperature side refrigerant | coolant piping can be arrange | positioned in an appropriate location. Therefore, it is possible to efficiently cool the electrical box that houses the electrical components.

  Moreover, in this Embodiment 1, the accumulator 27 provided between the compressor 25 and the indoor heat exchanger 33 is provided, and the refrigerant | coolant piping 73 connected to the accumulator 27 among low temperature side refrigerant | coolant piping is an air blower. The compressor unit 11 provided on the intake side of 141 is configured.

  With the above configuration, it is possible to prevent adverse effects such as dust or dust on the electrical components. Moreover, since the arrangement | positioning location of the low temperature side refrigerant | coolant piping resulting from a refrigerant | coolant jacket is not received, a low temperature side refrigerant | coolant piping can be arrange | positioned in an appropriate location. Therefore, it is possible to efficiently cool the electrical box that houses the electrical components.

  Further, in the first embodiment, the radiating fin 122 is configured as the compressor unit 11 provided in a direction along the substantially vertical direction.

  With the above configuration, the heat flow radiated from the radiation fins 122 can be directed to the upper panel 16 side or the base 17 side.

  In the first embodiment, the power module 107 includes a switching element 111 and a commutation diode 113 provided in parallel to the switching element 111, and the power device includes the switching element 111 and the commutation diode 113. At least one of them is configured as a compressor unit 11 formed of a wide band gap semiconductor.

  With the above configuration, the power module 107 can be reduced in size.

  In the first embodiment, the wide band gap semiconductor includes the compressor unit 11 that is an element using silicon carbide, a gallium nitride-based material, or diamond.

  With the above configuration, the heat resistance of the power module 107 can be improved and high-frequency driving can be performed.

  Moreover, in this Embodiment 1, the compressor 25, the outdoor heat exchanger 61, the expansion valve 31, and the indoor heat exchanger 33 are connected with refrigerant | coolant piping, and the refrigeration cycle apparatus provided with the refrigerant circuit 3 which circulates a refrigerant | coolant. 1, the compressor unit 11 housing the compressor 25, the outdoor heat exchange unit 13 housing the outdoor heat exchanger 61, the indoor heat exchange unit 15 housing the expansion valve 31 and the indoor heat exchanger 33, The refrigeration cycle apparatus 1 provided with is configured.

  With the above configuration, the electrical equipment box containing the electrical components can be efficiently cooled.

Embodiment 2. FIG.
In the first embodiment, the refrigerant pipe 73 is provided on the intake side of the blower 141. On the other hand, in the second embodiment, among the exhaust side of the heat sink 121, the refrigerant pipe 73 is provided on the outlet side of the base side heat sink opening end 151 facing the base 17 side.

  In the second embodiment, items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.

  FIG. 12 is a perspective view showing an example of the positional relationship of the low temperature side pipes in the casing 21 according to Embodiment 2 of the present invention. As shown in FIG. 12, the base-side heat sink opening end 151 is formed at an end portion facing the base 17 among the end portions in the longitudinal direction of the radiation fins 122 forming the heat sink 121. That is, the base-side heat sink opening end 151 is on the side where one end in the longitudinal direction of the radiation fin 122 faces the base 17 side.

  The refrigerant pipe 73 is provided on the outlet side of the base-side heat sink opening end 151. In the case of this configuration, air exhausted from the heat sink 121 is supplied to the refrigerant pipe 73. The air supplied from the heat sink 121 to the refrigerant pipe 73 was exhausted by heat exchange between the cooling air supplied from the blower 141 and the heat generated in the diode module 101 and the power module 107 transmitted by the heat sink 121. Air.

  Therefore, the air temperature around the refrigerant pipe 73 rises compared to the case where the air exhausted from the heat sink 121 is not supplied. For this reason, since the state in which the surface temperature of the refrigerant | coolant piping 73 and the ambient temperature of the refrigerant | coolant piping 73 differ greatly is eased, the dew condensation produced on the surface of the refrigerant | coolant piping 73 is suppressed. Since dew condensation is suppressed, water convection due to dew condensation is eliminated. Therefore, the rust which may generate | occur | produce in the electrical equipment box 23 by the cause of the convection of water can be prevented.

  In addition, since the refrigerant pipe 73 is provided on the outlet side of the base-side heat sink opening end 151, even if condensation occurs in the refrigerant pipe 73, water droplets generated by the condensation are dropped on the electrical box 23. Absent. For this reason, even if dew condensation occurs in the refrigerant pipe 73, damage can be prevented by dripping dew condensation on the electrical components inside the electrical box 23.

  Instead of providing the refrigerant pipe 73 on the outlet side of the base side heat sink opening end 151, the refrigerant pipe 79 may be provided on the outlet side of the base side heat sink opening end 151.

  As described above, in the second embodiment, the accumulator 27 provided between the compressor 25 and the indoor heat exchanger 33, the base 17, the upper panel 16, and the side panel 18 are formed. The electrical equipment box 23, the compressor 25, and the housing 21 that stores the accumulator 27 are included. The heat radiation fin 122 is formed in a shape having a longitudinal direction, and one end portion of the heat radiation fin 122 in the longitudinal direction is formed. A refrigerant pipe 73 having a base-side heat sink opening end 151 facing the base 17 side and connected to the accumulator 27 among the low-temperature side refrigerant pipes is provided on the downstream side of the base-side heat sink opening end 151. A unit 11 is configured.

  With the above configuration, dew condensation occurring on the surface of the refrigerant pipe 73 is suppressed. Since dew condensation is suppressed, water convection due to dew condensation is eliminated. Therefore, the rust which may generate | occur | produce in the electrical equipment box 23 by the cause of the convection of water can be prevented. In addition, since the refrigerant pipe 73 is provided on the outlet side of the base-side heat sink opening end 151, even if condensation occurs in the refrigerant pipe 73, water droplets generated by the condensation are dropped on the electrical box 23. Absent. For this reason, even if dew condensation occurs in the refrigerant pipe 73, damage can be prevented by dripping dew condensation on the electrical components inside the electrical box 23.

Embodiment 3 FIG.
In the first embodiment, the refrigerant pipe 73 is provided on the intake side of the blower 141. In the second embodiment, among the exhaust side of the heat sink 121, the refrigerant pipe 73 is provided on the outlet side of the base side heat sink opening end 151 facing the base 17 side. On the other hand, in the third embodiment, among the exhaust side of the heat sink 121, the refrigerant pipe 73 is provided on the outlet side of the top panel side heat sink opening end 153 facing the top panel 16 side.

  In the third embodiment, items not particularly described are the same as those in the first and second embodiments, and the same functions and configurations are described using the same reference numerals.

  FIG. 13 is a perspective view showing an example of the positional relationship of the low temperature side pipes in the casing 21 according to Embodiment 3 of the present invention. As shown in FIG. 13, the upper surface panel side heat sink opening end 153 is formed at an end portion facing the upper surface panel 16 among the longitudinal end portions of the radiation fins 122 forming the heat sink 121. That is, the upper surface panel side heat sink opening end 153 is on the side where one end portion of the radiating fin 122 in the longitudinal direction faces the upper surface panel 16 side.

  The refrigerant pipe 73 is provided on the outlet side of the upper panel-side heat sink opening end 153. In the case of this configuration, air exhausted from the heat sink 121 is supplied to the refrigerant pipe 73. The air supplied from the heat sink 121 to the refrigerant pipe 73 was exhausted by heat exchange between the cooling air supplied from the blower 141 and the heat generated in the diode module 101 and the power module 107 transmitted by the heat sink 121. Air.

  Therefore, the air temperature around the refrigerant pipe 73 rises compared to the case where the air exhausted from the heat sink 121 is not supplied. For this reason, since the state in which the surface temperature of the refrigerant | coolant piping 73 and the ambient temperature of the refrigerant | coolant piping 73 differ greatly is eased, the dew condensation produced on the surface of the refrigerant | coolant piping 73 is suppressed. Since dew condensation is suppressed, water convection due to dew condensation is eliminated. Therefore, the rust which may generate | occur | produce in the electrical equipment box 23 by the cause of the convection of water can be prevented.

  Instead of providing the refrigerant pipe 73 on the outlet side of the upper panel side heat sink opening end 153, the refrigerant pipe 79 may be provided on the outlet side of the upper panel heat sink opening end 153.

  As described above, in the third embodiment, the accumulator 27 provided between the compressor 25 and the indoor heat exchanger 33, the base 17, the upper surface panel 16, and the side panel 18 are formed. The electrical equipment box 23, the compressor 25, and the housing 21 that stores the accumulator 27 are included. The heat radiation fin 122 is formed in a shape having a longitudinal direction, and one end portion of the heat radiation fin 122 in the longitudinal direction is formed. Of the low-temperature side refrigerant pipes, the refrigerant pipe 73 connected to the accumulator 27 is provided on the downstream side of the upper panel side heat sink opening end 153 and has an upper panel side heat sink opening end 153 facing the upper panel 16 side. A compressor unit 11 is configured.

  With the above configuration, dew condensation occurring on the surface of the refrigerant pipe 73 is suppressed. Since dew condensation is suppressed, water convection due to dew condensation is eliminated. Therefore, the rust which may generate | occur | produce in the electrical equipment box 23 by the cause of the convection of water can be prevented.

Embodiment 4 FIG.
In the fourth embodiment, the compressor unit 11 a and the compressor unit 11 b configured in any one of the first to third embodiments are provided in the machine room 181. In the fourth embodiment, items that are not particularly described are the same as those in the first to third embodiments, and the same functions and configurations are described using the same reference numerals.

  FIG. 14 is a diagram showing an example of the configuration of the machine room 181 in which the compressor unit 11 according to Embodiment 4 of the present invention is housed. As shown in FIG. 14, the machine room 181 includes a ventilation port 191. The machine room 181 is provided in the room 201, for example.

  The vent 191 normally includes a ventilator having a fan, but in the fourth embodiment, such a ventilator is not provided. Inside the compressor unit 11a and the compressor unit 11b, the amount of heat exhausted by the heat sink 121, that is, the amount of heat dissipated, is reduced by using the cooling air around the refrigerant pipe 73 and the refrigerant pipe 79.

  For this reason, the compressor unit 11a and the compressor unit 11b consume less heat than ordinary ones. Therefore, the temperature in the machine room 181 does not continue to rise with the operation of the compressor unit 11a and the compressor unit 11b. Therefore, it is not necessary to provide a ventilation device at the ventilation port 191. As a result, it is not necessary to provide the compressor unit 11a and the compressor unit 11b in consideration of the provision of the ventilation device, so that the options for the installation location can be expanded.

  In other words, by providing the machine room 181 with the compressor unit 11a and the compressor unit 11b configured in any one of the first to third embodiments, it is not necessary to provide a ventilation device in the ventilation port 191. The manufacturing cost or installation cost of 181 can be reduced.

  In the above description, an example in which two compressor units 11 are installed has been described. However, the present invention is not particularly limited thereto.

  In addition, this Embodiment 1-4 may be implemented independently and may be implemented in combination. In either case, the advantageous effects described above are produced.

  DESCRIPTION OF SYMBOLS 1 Refrigeration cycle apparatus, 3 Refrigerant circuit, 11, 11a, 11b Compressor unit, 13 Outdoor heat exchange unit, 15 Indoor heat exchange unit, 16 Top panel, 17 Base, 18, 18a, 18b, 18c, 18d Side panel, 21 Housing, 23, 23a, 23b Electrical box, 25, 25a, 25b Compressor, 27 Accumulator, 29 Liquid receiver, 31 Expansion valve, 33 Indoor heat exchanger, 41, 41a, 41b Air inlet, 42, 42a, 42b, 42c, 42d Air outlet, 43, 43a, 43b Fan, 51, 51a, 51b, 52, 52a, 52b, 53, 53a, 53b Wind direction, 61, 61a, 61b Outdoor heat exchanger, 71, 72, 73 75, 77, 79 Refrigerant piping, 91 AC power supply, 93 Brushless DC motor, 95 Print base , 101 diode module, 103 reactor, 105 capacitor, 107 power module, 109 control circuit, 111 switching element, 113 commutation diode, 121, 121a, 121b heat sink, 122, 122a, 122b radiating fin, 131 mounting plate, 141, 141a 141b Blower, 151 Base side heat sink opening end, 153 Top panel heat sink opening end, 171 Intake air direction, 173, 173a, 173b Exhaust air direction, 181 Machine room, 191 Ventilation port, 201 room.

Claims (9)

A compressor unit, in which a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger are connected by a refrigerant pipe, and in which a refrigerant circuit that circulates the refrigerant that circulates through the refrigerant pipe, stores the compressor,
A diode module that converts alternating current power into direct current power, and a power module that includes a power device, converts the direct current power into alternating current power, and drives the compressor.
A heat sink provided with surface contact with at least one of the diode module and the power module, and having heat dissipation fins for transferring heat;
A blower that is provided at a position facing the heat dissipating fins and blows air to the heat sink;
With
Of the refrigerant pipes, a low-temperature side refrigerant pipe through which the low-temperature refrigerant flows is provided on the intake side of the blower. 2. The compressor unit according to claim 1, wherein, among the low temperature side refrigerant pipes, a first low temperature side refrigerant pipe connected to the compressor is provided on an intake side of the blower. An accumulator provided between the compressor and the indoor heat exchanger;
The compressor unit according to claim 2, wherein, among the low-temperature side refrigerant pipes, a second low-temperature side refrigerant pipe connected to the accumulator is provided on an intake side of the blower. An accumulator provided between the compressor and the indoor heat exchanger;
A base, a top panel, and a side panel, and a housing that houses the electrical box, the compressor, and the accumulator;
With
The heat radiating fin is formed in a shape having a longitudinal direction, and one end of the radiating fin in the longitudinal direction has a base side heat sink opening end facing the base side,
3. The compressor unit according to claim 2, wherein, among the low temperature side refrigerant pipes, a second low temperature side refrigerant pipe connected to the accumulator is provided on the downstream side of the base side heat sink opening end. An accumulator provided between the compressor and the indoor heat exchanger;
A base, a top panel, and a side panel, and a housing that houses the electrical box, the compressor, and the accumulator;
With
The radiating fin is formed in a shape having a longitudinal direction, and one end portion in the longitudinal direction of the radiating fin has an upper surface panel side heat sink opening end facing the upper surface panel side,
3. The compressor unit according to claim 2, wherein, among the low temperature side refrigerant pipes, a second low temperature side refrigerant pipe connected to the accumulator is provided on the downstream side of the upper surface panel side heat sink opening end. . The compressor unit according to any one of claims 3 to 5, wherein the radiation fins are provided in a direction along a substantially vertical direction. The power module is
A switching element;
A diode element provided in parallel with the switching element,
The power device is
The compressor unit according to claim 6, wherein the compressor unit is formed of a wide band gap semiconductor that is at least one of the switching element and the diode element. The wide band gap semiconductor is
The compressor unit according to claim 7, wherein the compressor unit is an element using silicon carbide, a gallium nitride-based material, or diamond. A compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger are connected by a refrigerant pipe, and a refrigeration cycle apparatus including a refrigerant circuit for circulating a refrigerant,
The compressor unit is housed, and the compressor unit according to any one of claims 1 to 8,
An outdoor heat exchange unit containing the outdoor heat exchanger;
A refrigeration cycle apparatus comprising: the expansion means and an indoor heat exchange unit that houses the indoor heat exchanger.

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