Air conditioning device

Abstract

To make it possible to efficiently cool an electric component while restraining occurrence of condensation on the electric component.SOLUTION: An air conditioner comprises: a casing; a heat exchanger provided in the casing; a compressor provided in the casing; an electric component for controlling the compressor; an electric component box provided in the casing, housing the electric component, and comprising an air intake part and an air exhaust part; a fan for generating a flow of air passing through the electric component box from the air intake part to the air exhaust part; and a refrigerant pipe for forming a refrigerant flow passage of a refrigeration cycle including the heat exchanger and the compressor. The refrigerant pipe is arranged along an outer surface of the electric component box.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to air conditioning systems. [Background technology]

[0002] Air conditioners are equipped with electrical components that control the operation of a compressor that compresses a refrigerant. The electrical components include heat-generating components such as inverters that generate heat when the compressor is operated. For this reason, airflow generated by a fan is used to suppress the temperature rise of the heat-generating components.

[0003] For example, Patent Document 1 discloses a configuration in which electrical components housed in a casing of an outdoor unit of an air conditioner are cooled by outside air taken in from outside the casing. The casing has an outside air intake port and an exhaust port. In the configuration of Patent Document 1, outside air is taken into the casing through the outside air intake port by operating a fan for cooling a condenser housed in the casing. The outside air taken into the casing in this manner is cooled as it passes near an accumulator provided in the casing, and after cooling the electrical components, is discharged to the outside of the casing through the exhaust port. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5879533 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the air conditioner configuration described in Patent Document 1, the electrical components are cooled by outside air taken in from outside the casing, so if the outside air temperature is very high, the electrical components may not be cooled sufficiently. Furthermore, if the outside air taken in from outside the casing has high humidity, condensation may occur on the surfaces of the electrical components, and the resulting water droplets may cause malfunctions in the electrical components.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an air conditioning system that can efficiently cool electrical components while suppressing the occurrence of condensation on the electrical components. [Means for solving the problem]

[0007] In order to solve the above problems, the air conditioning device according to the present disclosure includes a casing, a heat exchanger, a compressor, electrical components, an electrical box, a fan, and refrigerant piping. The heat exchanger is provided within the casing. The compressor is provided within the casing. The electrical components control the compressor. The electrical box is provided within the casing and houses the electrical components. The electrical box has an intake section and an exhaust section. The fan generates an air flow that passes through the electrical box from the intake section to the exhaust section. The refrigerant piping forms a refrigerant flow path of a refrigeration cycle that includes the heat exchanger and the compressor. The refrigerant piping is arranged along the outer surface of the electrical box. [Effects of the Invention]

[0008] According to the air conditioning system of the present disclosure, it is possible to efficiently cool electrical components while suppressing the occurrence of condensation on the electrical components. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a system diagram of an air conditioning device according to an embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram of an air conditioning device according to an embodiment of the present disclosure, viewed from a first horizontal direction. [Figure 3] 3 is a schematic diagram of an electrical box and low-temperature components of an air conditioner according to an embodiment of the present disclosure, viewed from a second horizontal direction. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] An air conditioner according to an embodiment of the present disclosure will be described below with reference to FIGS. (Air conditioning system configuration) As shown in FIG. 1, an air conditioner 1 according to this embodiment includes an outdoor unit 2 and an indoor unit (not shown).

[0011] The outdoor unit 2 includes a casing 20, a compressor 4, a four-way valve 5, a water heat exchanger (heat exchanger) 6, a receiver (low-temperature component) 7, expansion valves 8A and 8B, an air heat exchanger (heat exchanger) 9, an accumulator (low-temperature component) 10, a heat exchanger fan 11, a pump 12, an electrical box 13, and a fan 30 (see Figures 2 and 3). The compressor 4, the four-way valve 5, the water heat exchanger 6, the receiver 7, the expansion valves 8A and 8B, the air heat exchanger 9, and the accumulator 10 are connected by refrigerant piping 3 that forms a refrigerant flow path. The refrigerant piping 3 constitutes a refrigerant circuit of a refrigeration cycle.

[0012] (Casing) FIG. 2 is a schematic diagram of the air conditioner according to the embodiment of the present disclosure viewed from a first horizontal direction. As shown in FIG. 2 , the casing 20 is formed in the shape of, for example, a rectangular box. The casing 20 has a partition plate 25. The partition plate 25 divides the interior of the casing 20 into a heat exchange chamber R1 and a machine chamber R2. The partition plate 25 of this embodiment is provided in the middle of the casing 20 in the horizontal first direction D1 and has a flat plate shape extending in the vertical direction. The partition plate 25 divides the internal space of the casing 20 into a plurality of spaces aligned in the horizontal first direction D1. The partition plate 25 of this embodiment divides the internal space of the casing 20 into a heat exchange chamber R1 on a first side in the horizontal first direction D1 and a machine chamber R2 on a second side in the horizontal first direction D1.

[0013] (heat exchanger room) The heat exchange chamber R1 of the casing 20 accommodates an air heat exchanger 9. (Heat exchanger fan) The heat exchanger fan 11 is provided on the upper part of the casing 20. The heat exchanger fan 11 circulates air inside and outside the heat exchange chamber R1. The air heat exchanger 9 exchanges heat between the refrigerant and outside air introduced by the blowing of the heat exchanger fan 11.

[0014] (mechanical room) The compressor 4, four-way valve 5, water heat exchanger 6, receiver 7, expansion valves 8A and 8B, accumulator 10, pump 12, electrical equipment box 13, and fan 30 are housed in the machine room R2. Note that multiple sets of the compressor 4, four-way valve 5, receiver 7, expansion valves 8A and 8B, and accumulator 10 may be provided in parallel within the machine room R2. Note that FIG. 2 illustrates only the compressor 4, receiver 7, accumulator 10, electrical equipment box 13, electrical equipment 14, and fan 30 as components of the refrigeration cycle disposed within the machine room R2, and does not illustrate other components. Note that the machine room R2 has openings such as slits in its peripheral wall so that air discharged from an exhaust section 13b (described later) can be discharged to the outside of the machine room R2 and so that cooling air can be introduced into the machine room R2 from the outside.

[0015] (Compressor) As shown in Fig. 1, the compressor 4 compresses a refrigerant and supplies the compressed high-temperature, high-pressure refrigerant to a refrigerant circuit. The compressor 4 has an internal motor (not shown). The motor of the compressor 4 is driven by an inverter. For example, the rotation speed of the motor of the compressor 4 corresponds to the output frequency of the inverter, and the compressor 4 supplies the refrigerant circuit with a discharge amount corresponding to the rotation speed of this motor.

[0016] (water heat exchanger) The water heat exchanger 6 exchanges heat between the water pumped by the pump 12 and the refrigerant. (receiver) Receiver 7 is connected between expansion valve 8A and expansion valve 8B in the direction of refrigerant flow. Receiver 7 stores liquid refrigerant condensed in the condenser (air heat exchanger 9 or water heat exchanger 6). Expansion valve 8A expands and reduces the pressure of the liquid refrigerant from air heat exchanger 9, which serves as a condenser, changing it into low-temperature, low-pressure refrigerant. Expansion valve 8B also expands and reduces the pressure of the liquid refrigerant from water heat exchanger 6, which serves as a condenser, changing it into low-temperature, low-pressure refrigerant.

[0017] (accumulator) The accumulator 10 is connected upstream of the compressor 4 in the refrigerant flow direction. The accumulator 10 separates the refrigerant in a gas-liquid mixed state that was not completely gasified in the evaporator (the water heat exchanger 6 or the air heat exchanger 9) into gas and liquid, and prevents the liquid refrigerant from flowing into the compressor 4.

[0018] (four-way valve) The four-way valve 5 changes the flow direction of the refrigerant in the refrigerant piping 3, switching the operating state of the air conditioner 1 between heating operation and cooling (or defrosting) operation. Control of the open / close state of the four-way valve 5 and adjustment of the operating temperature are performed by electrical components 14 housed in an electrical equipment box 13. During heating operation, the refrigerant discharged from the compressor 4 flows in the following order: water heat exchanger 6, expansion valve 8B, receiver 7, expansion valve 8A, air heat exchanger 9, and accumulator 10. At this time, the water heat exchanger 6 functions as a condenser, and the air heat exchanger 9 functions as an evaporator. Hot water heated in the water heat exchanger 6 is supplied to the outside via water piping 18.

[0019] On the other hand, during cooling (defrosting) operation, the refrigerant discharged from the compressor 4 flows in the following order: air heat exchanger 9, expansion valve 8A, receiver 7, expansion valve 8B, heat exchanger 6, and accumulator 10. The air heat exchanger 9 functions as a condenser, and the water heat exchanger 6 functions as an evaporator. The cold water cooled in the water heat exchanger 6 is supplied to the outside via water piping 18.

[0020] (Electrical box) FIG. 3 is a schematic diagram of an electrical equipment box and low-temperature components of an air conditioner according to an embodiment of the present disclosure, viewed from a second horizontal direction. 2 and 3, the electrical box 13 is box-shaped and houses the electrical components 14. The electrical box 13 is configured to be able to introduce the airflow generated by the fan 30. The electrical box 13 has an intake section 13a and an exhaust section 13b.

[0021] (intake section) The intake section 13a introduces the air flow generated by the fan 30 from inside the machine room R2 into the electrical equipment box 13. The intake section 13a of the electrical equipment box 13 of this embodiment is provided so as to open downward.

[0022] (Exhaust section) The exhaust section 13b exhausts the air introduced into the electrical box 13 from the intake section 13a into the machine chamber R2. The exhaust section 13b opens in a direction different from that of the intake section 13a. In this embodiment, the exhaust section 13b opens upward. An opening that communicates the inside and outside of the machine chamber R2 may be formed in the top surface of the electrical box 13. In this case, air from the internal space of the electrical box 13 exhausted from the exhaust section 13b is exhausted to the outside of the electrical box 13 through the opening in the top surface of the electrical box 13. Alternatively, an opening may not be provided in the top surface of the electrical box 13, and the air exhausted from the exhaust section 13b may be circulated within the machine chamber R2. Note that the exhaust section 13b may open not only upward but also in another direction, such as the horizontal first direction D1.

[0023] The electrical box 13 has a pair of a first side plate 131 , a second side plate 132 , and a third side plate 133 . As shown in FIG. 2, the pair of first side plates 131 are spaced apart in the horizontal first direction D1. Each of the pair of first side plates 131 has a flat plate shape extending along a vertical plane intersecting the horizontal first direction D1. The lower ends 131b of the pair of first side plates 131 are inclined downward so that the distance between them in the horizontal first direction D1 gradually decreases. As shown in FIG. 3, the second side plate 132 extends along a vertical plane perpendicular to the horizontal second direction D2. The second side plate 132 connects the pair of first side plates 131 to each other on a first side in the horizontal second direction D2 perpendicular to the horizontal first direction D1 within the horizontal plane.

[0024] The third side plate 133 is spaced apart from the second side plate 132 on the second side in the horizontal second direction D2 (one side in the horizontal second direction D2). The third side plate 133 connects the pair of first side plates 131 to each other on the second side in the horizontal second direction D2. The third side plate 133 has an upper plate portion 133a and an inclined plate portion 133b. The upper plate portion 133a extends along a vertical plane intersecting the horizontal second direction D2. The upper end of the inclined plate portion 133b is connected to the lower end of the upper plate portion 133a. The inclined plate portion 133b extends upward from the opening edge of the intake portion 13a and is inclined upward so as to move away from the intake portion 13a toward the second side (one side) in the horizontal second direction D2. Note that in this embodiment, the inclined plate portion 133b is in the shape of a flat plate with a constant inclination angle. However, the inclination angle of the inclined plate portion 133b is not limited to a constant value as long as the inclination angle allows the droplets adhering to the inner surface of the inclined plate portion 133b to move by their own weight toward the intake portion 13a.

[0025] (Electrical equipment) As shown in FIGS. 2 and 3 , the electrical equipment 14 includes an inverter, a control circuit, a power supply circuit, and the like. The electrical equipment 14 controls the operation of the compressor 4 and the four-way valve 5. The electrical equipment 14 is accommodated in the internal space of the electrical equipment box 13 via a support member 19. The support member 19 extends, for example, in a vertical direction intersecting the horizontal second direction D2. An end of the support member 19 is connected to the electrical equipment box 13 via, for example, a bracket (not shown). The electrical equipment 14 is located away from the inner surface 13g of the electrical equipment box 13. As shown in FIG. 3 , the electrical equipment 14 of this embodiment is disposed on the second side (one side) of the intake section 13a in the horizontal second direction D2 when viewed from the horizontal first direction D1.

[0026] (fan) The fan 30 generates an air flow that passes through the electrical box 13 from the intake section 13a to the exhaust section 13b in the machine room R2. The fan 30 in this embodiment is arranged in the electrical box 13. Specifically, the fan 30 is arranged in the electrical box 13 above the intake section 13a. The fan 30 is arranged in the electrical box 13 below the electrical components 14. The fan 30 in this embodiment is always operating while the air conditioner 1 is operating. When the fan 30 is operating, an air flow that passes through the electrical box 13 from the intake section 13a to the exhaust section 13b is generated. The fan 30 may be arranged closer to the exhaust section 13b than the electrical components 14.

[0027] (refrigerant piping) The electrical box 13 is disposed above the refrigerant pipe 3. The refrigerant pipe 3 is provided along the outer surface of the electrical box 13. The refrigerant pipe 3 of this embodiment is provided along the outer surface 13f of the electrical box 13. The refrigerant pipe 3 of this embodiment is in contact with the outer surface 13f of the electrical box 13. The refrigerant pipe 3 may be in contact with the outer surface 13f via a heat-conductive material, such as an adhesive or solder.

[0028] In this embodiment, a portion of the refrigerant pipe 3 extending in the horizontal first direction D1 contacts the outer surface 13f of the electrical box 13. In this embodiment, the refrigerant pipe 3 contacts the outer surface 13f of the inclined plate portion 133b. Here, it is preferable that a region of the refrigerant pipe 3 constituting the refrigeration cycle, where the refrigerant is at a temperature lower than that of the electrical components 14, contacts the outer surface 13f of the electrical box 13. In this embodiment, a region of the refrigerant pipe 3 between the condenser and the expansion valves 8A, 8B contacts the outer surface 13f of the inclined plate portion 133b.

[0029] (Low temperature parts) The electrical box 13 is disposed above the receiver 7 and accumulator 10, which are low-temperature components. The intake section 13a, which opens downward, is provided in a position that faces vertically the receiver 7 and accumulator 10, which are low-temperature components. No other members are provided between the intake section 13a and the receiver 7 and accumulator 10, which are low-temperature components.

[0030] The temperature of the refrigerant in the receiver 7 and the accumulator 10 is lower than the temperature of the refrigerant in the compressor 4 (and the water heat exchanger 6). Furthermore, the temperature of the refrigerant in the receiver 7 and the accumulator 10 is lower than the temperature of the electrical components 14 that rises as the electrical components 14 in the electrical box 13 operate. That is, in this embodiment, the receiver 7 and the accumulator 10 are low-temperature components that are lower in temperature than the electrical components 14. Furthermore, the temperature of the refrigerant in the accumulator 10 is lower than the temperature of the refrigerant in the receiver 7.

[0031] (Explanation of operation) Next, the operation of the air conditioner 1 of this embodiment will be described. When the air conditioner 1 is operated, a current flows through the circuit, and the electrical components 14 in the electrical box 13 generate heat due to internal resistance and other factors. Meanwhile, the fan 30 is activated. As a result, air generated by the fan 30 passes through the electrical box 13 from the intake section 13a to the exhaust section 13b. When the compressor 4 is activated, refrigerant circulates through the refrigerant pipes 3 that constitute the refrigeration cycle, and the temperature of the refrigerant pipes 3 in an area along the outer surface 13f of the electrical box 13 decreases. This heat transfer from the refrigerant pipes 3 cools the electrical box 13. Then, the air introduced into the electrical box 13 from the intake section 13a of the electrical box 13 by the fan 30 is cooled by the electrical box 13. As a result, a temperature rise of the electrical components 14 housed in the electrical box 13 is suppressed.

[0032] (Action and effect) In the air conditioner 1 of the above embodiment, the refrigerant piping 3 is arranged along the outer surface 13f of the electrical box 13. Therefore, the electrical box 13 is cooled by the refrigerant piping 3. The air conditioner 1 also includes a fan 30 that generates a flow of air that passes through the electrical box 13 from the intake section 13a to the exhaust section 13b. Therefore, the air that is introduced into the electrical box 13 from the intake section 13a of the electrical box 13 by the fan 30 is cooled by the electrical box 13. The air cooled by the electrical box 13 suppresses a temperature rise of the electrical components 14 housed in the electrical box 13.

[0033] Furthermore, the refrigerant flowing through the refrigerant pipes 3 keeps the refrigerant pipes 3 at a low temperature. Therefore, even when the outside air temperature is high, the electrical box 13 can be sufficiently cooled. Furthermore, when the outside air humidity is high, the cooled electrical box 13 causes the air introduced into the electrical box 13 from the intake section 13a to condense upon contact with the electrical box 13. Therefore, in the direction of the air flow passing through the electrical box 13, air with reduced humidity flows downstream of the portion where condensation has occurred. As a result, condensation on the electrical components 14 is suppressed. In this way, the electrical components 14 can be efficiently cooled while suppressing condensation on the electrical components 14.

[0034] In the above embodiment, the refrigerant pipe 3 is provided along the outer surface 13f of the electrical box 13. This allows the electrical box 13 to be cooled more efficiently.

[0035] In addition, in the above embodiment, the electrical components 14 are disposed away from the inner surface 13g of the electrical box 13, which prevents the electrical components 14 from being excessively cooled through the electrical box 13, which is kept at a low temperature by the refrigerant pipe 3. This makes it possible to more effectively prevent condensation from forming on the electrical components 14.

[0036] In the above embodiment, the refrigerant pipe 3 abuts against the inclined plate portion 133b. As a result, when the air introduced into the electrical box 13 from the intake section 13a condenses upon contact with the electrical box 13, the condensed water flows downward along the inclined plate section 133b and is discharged from the intake section 13a to below the electrical box 13.

[0037] Furthermore, in the above embodiment, the electrical component 14 is disposed on the second side (one side) of the intake portion 13a in the horizontal second direction D2. As a result, the air introduced into the electrical component box 13 from the intake portion 13a flows upward along the inclined plate portion 133b, away from the intake portion 13a to the second side (one side) in the horizontal second direction D2, and reaches the electrical component box 13. Therefore, inside the electrical component box 13, the air comes into contact with the inclined plate portion 133b, with which the refrigerant pipe 3 abuts, over a longer area, and is cooled. This allows the electrical component 14 to be cooled more efficiently.

[0038] In the above embodiment, the fan 30 is provided in the internal space of the electrical box 13 above the intake section 13a. Therefore, even if the air introduced into the interior of the electrical box 13 from the intake section 13a comes into contact with the electrical box 13 and condenses, the condensed water can be prevented from coming into contact with the fan 30.

[0039] In the above embodiment, the accumulator 10 and receiver 7, which are low-temperature components, are provided at positions facing the intake section 13a. The fan 30 introduces the air that has passed through the accumulator 10 and receiver 7 inside the casing 20 into the internal space of the electrical box 13 through the intake section 13a. As a result, the air sent into the electrical box 13 is cooled by passing through the accumulator 10 and receiver 7. This makes it possible to gradually reduce the temperature and humidity of the air used to cool the electrical components 14, thereby more effectively suppressing a rise in the temperature of the electrical components 14 housed in the electrical box 13.

[0040] In the above embodiment, the low-temperature components are the accumulator 10 and the receiver 7 that constitute the refrigeration cycle. As a result, the refrigerant becomes low temperature in the accumulator 10 and the receiver 7. Therefore, by using the accumulator 10 and the receiver 7 as low-temperature components, low-temperature air that has passed through the accumulator 10 and the receiver 7 and has been cooled can be sent into the electrical box 13. As a result, the electrical components 14 in the electrical box 13 can be efficiently cooled.

[0041] Furthermore, in the above embodiment, the electrical equipment box 13 is disposed above the accumulator 10 and the receiver 7. As a result, the air cooled after passing through the accumulator 10 and the receiver 7 increases in temperature by cooling the electrical components 14 in the electrical equipment box 13. This makes it easy for an upward air current to form from around the accumulator 10 and the receiver 7 toward the electrical components 14 in the electrical equipment box 13 disposed above the accumulator 10 and the receiver 7. By disposing the electrical equipment box 13 above the accumulator 10 and the receiver 7, air can be efficiently circulated from around the accumulator 10 and the receiver 7 toward the interior of the electrical equipment box 13.

[0042] In the above embodiment, the exhaust portion 13b opens upward. As a result, the air that has been cooled after passing through the accumulator 10 and the receiver 7 and then sent into the electrical box 13 increases in temperature by cooling the electrical components 14. Since the heated air rises within the electrical box 13, by opening the exhaust portion 13b upward, the air that has passed through the electrical components 14 within the electrical box 13 can be efficiently discharged from the electrical box 13 into the casing 20.

[0043] The above describes an embodiment of the present disclosure. It should be noted that various changes and modifications can be made to the above configuration without departing from the spirit and scope of the present disclosure. For example, the shapes, arrangements, and dimensions of the electrical box 13 and the electrical components 14 described with reference to Figures 2 and 3 are merely examples, and can be changed as appropriate depending on the design and specifications. For example, the configuration of the refrigeration cycle is not limited to the configuration shown in FIG. In addition, in the above embodiment, the case where both the accumulator 10 and the receiver 7 are positioned as low-temperature components facing the intake section 13a has been described, but only one of the accumulator 10 and the receiver 7 may be positioned facing the intake section 13a. In the above embodiment, the fan 30 generates an air flow that passes through the electrical box 13 from the intake section 13a to the exhaust section 13b, but this is not limiting. For example, the heat exchanger fan 11 may be operated as a fan to generate an air flow that passes through the electrical box 13 from the intake section 13a to the exhaust section 13b.

[0044] <Additional Notes> The air conditioner 1 described in the embodiment can be understood, for example, as follows.

[0045] (1) The air conditioning device 1 according to the first aspect includes a casing 20, heat exchangers 6 and 9 provided within the casing 20, a compressor 4 provided within the casing 20, electrical equipment 14 for controlling the compressor 4, an electrical box 13 provided within the casing 20, housing the electrical equipment 14 and having an intake section 13a and an exhaust section 13b, a fan 30 for generating an air flow passing through the electrical box 13 from the intake section 13a to the exhaust section 13b, and refrigerant piping 3 for forming a refrigerant flow path of a refrigeration cycle including the heat exchangers 6 and 9 and the compressor 4, and the refrigerant piping 3 is arranged along an outer surface 13f of the electrical box 13.

[0046] This configuration cools the electrical box 13. Furthermore, the air introduced into the interior of the electrical box 13 from the air intake section 13a of the electrical box 13 by the fan 30 is cooled by the electrical box 13. This prevents the temperature of the electrical components 14 housed in the electrical box 13 from rising. Furthermore, the refrigerant flowing through the refrigerant pipes 3 keeps the refrigerant pipes 3 at a low temperature. Therefore, even when the outside air temperature is high, the electrical box 13 can be sufficiently cooled. Furthermore, when the outside air humidity is high, the cooled electrical box 13 causes the air introduced into the electrical box 13 from the intake section 13a to condense upon contact with the electrical box 13. Therefore, in the direction of the air flow passing through the electrical box 13, air with reduced humidity flows downstream of the portion where condensation has occurred. As a result, condensation on the electrical components 14 is suppressed. In this way, the electrical components 14 can be efficiently cooled while suppressing condensation on the electrical components 14.

[0047] (2) The air conditioner 1 according to a second aspect is the air conditioner 1 of (1), in which the electrical equipment 14 is provided away from the inner surface 13 g of the electrical equipment box 13 .

[0048] This prevents the electrical components 14 from being cooled excessively via the electrical box 13, which is kept at a low temperature by the refrigerant pipe 3. This makes it possible to more effectively prevent condensation from forming on the electrical components 14.

[0049] (3) The air conditioner 1 according to the third aspect is the air conditioner 1 of either (1) or (2), wherein the electrical box 13 has an inclined plate portion 133b that extends upward from the opening edge of the intake portion 13a and inclines so as to move away from the intake portion 13a to one side in the horizontal direction as it extends upward, and the refrigerant piping 3 abuts against the inclined plate portion 133b.

[0050] As a result, when the air introduced into the electrical box 13 from the intake section 13a condenses upon contact with the electrical box 13, the condensed water flows downward along the inclined plate section 133b and is discharged from the intake section 13a to the outside of the electrical box 13.

[0051] (4) The air conditioner 1 according to a fourth aspect is the air conditioner 1 of (3), in which the electrical components 14 are disposed on one side of the intake portion 13a in the horizontal direction D2.

[0052] As a result, the air introduced into the electrical box 13 from the intake portion 13a flows upward along the inclined plate portion 133b, away from the intake portion 13a to one side in the horizontal direction D2, and reaches the electrical box 13. Therefore, inside the electrical box 13, the air is cooled by contacting a longer area of ​​the inclined plate portion 133b with which the refrigerant pipe 3 abuts. This allows the electrical components 14 to be cooled more efficiently.

[0053] (5) The air conditioner 1 according to the fifth aspect is any one of the air conditioners 1 of (1) to (4), in which the fan 30 is provided in the internal space of the electrical box 13 above the intake section 13a.

[0054] This prevents the condensed water from coming into contact with the fan 30 even if the air introduced into the electrical box 13 from the intake section 13a comes into contact with the electrical box 13 and condenses.

[0055] (6) The air conditioner 1 according to the sixth aspect is any one of the air conditioners 1 according to (1) to (5), further comprising low-temperature components 7, 10 that are provided in the internal space of the casing 20, are provided in part of a refrigeration cycle including the heat exchangers 6, 9, and are at a lower temperature than the electrical equipment 14, the low-temperature components 7, 10 are provided in a position opposite the intake section 13a, and the fan 30 introduces air that has passed through the low-temperature components 7, 10 in the casing 20 from the intake section 13a into the internal space of the electrical equipment box 13.

[0056] As a result, the fan 30 introduces air that has passed through the low-temperature components 7 and 10 inside the casing 20 through the intake section 13a into the internal space of the electrical box 13. The air sent into the electrical box 13 is cooled by passing through the low-temperature components 7 and 10. This makes it possible to more effectively suppress temperature increases in the electrical components 14 housed in the electrical box 13.

[0057] (7) The air conditioner 1 according to a seventh aspect is the air conditioner 1 of (6), wherein the low-temperature components 7, 10 are at least one of an accumulator 10 and a receiver 7 that constitute the refrigeration cycle.

[0058] As a result, the refrigerant circulating through the refrigeration cycle becomes low temperature in the accumulator 10 and receiver 7 that constitute the refrigeration cycle. Therefore, by using at least one of the accumulator 10 and the receiver 7 as a low-temperature member, low-temperature air that has passed through the accumulator 10 and the receiver 7 and has been cooled can be sent into the electrical box 13. This allows the electrical components 14 in the electrical box 13 to be cooled efficiently.

[0059] (8) The air conditioner 1 according to an eighth aspect is the air conditioner 1 according to (6) or (7), in which the electrical box 13 is disposed above the low-temperature components 7 and 10.

[0060] As a result, the air cooled through the low-temperature components 7, 10 increases in temperature by cooling the electrical components 14 in the electrical box 13. For this reason, an upward air current tends to be generated from around the low-temperature components 7, 10 toward the electrical components 14 in the electrical box 13 arranged above the low-temperature components 7, 10. By arranging the electrical box 13 above the low-temperature components 7, 10, air can be efficiently circulated from around the low-temperature components 7, 10 toward the interior of the electrical box 13.

[0061] (9) The air conditioner 1 according to a ninth aspect is the air conditioner 1 according to any one of (1) to (8), wherein the exhaust portion 13b opens upward.

[0062] As a result, the air that has been cooled through the low-temperature components 7 and 10 and sent into the electrical box 13 increases in temperature by cooling the electrical components 14. Since the air with an increased temperature rises within the electrical box 13, by opening the exhaust section 13b upward, the air that has passed through the electrical components 14 within the electrical box 13 can be efficiently discharged from the electrical box 13 into the casing 20. [Explanation of symbols]

[0063] 1 Air conditioner 2 Outdoor unit 3 Refrigerant piping 4 Compressor 5 Four-way valve 6 Water heat exchanger (heat exchanger) 7 Low-temperature parts 7 Receiver (low temperature part) 8A, 8B Expansion valve 9 Air heat exchanger (heat exchanger) 10 Accumulator (low temperature component) 11 Heat exchanger fan 12 Pump 13 Electrical box 13a Intake section 13b Exhaust section 13f External surface 13g inner surface 14 Electrical equipment 18 Water piping 19 Support member 20 Casing 25 Divider 30 fans 131 First side plate 131b Lower end 132 Second side plate 133 Third side plate 133a Upper plate 133b Inclined plate section D1 Horizontal first direction D2 Horizontal second direction (horizontal direction) R1 heat exchange room R2 Machine room

Claims

1. A casing; a heat exchanger provided within the casing; a compressor provided within the casing; an electrical component for controlling the compressor; an electrical equipment box provided in the casing, accommodating the electrical equipment, and having an intake section and an exhaust section; a fan that generates an air flow that passes through the electrical box from the intake section to the exhaust section; a refrigerant pipe forming a refrigerant flow path of a refrigeration cycle including the heat exchanger and the compressor, The refrigerant pipe is arranged along the outer surface of the electrical box. Air conditioner.

2. The electrical equipment is provided away from the inner surface of the electrical box. The air conditioning system according to claim 1 .

3. the electrical box has an inclined plate portion that extends upward from an opening edge of the air intake portion and is inclined upward so as to move away from the air intake portion to one side in a horizontal direction, The refrigerant pipe is in contact with the inclined plate portion.

3. The air conditioning system according to claim 1 or 2.

4. The electrical equipment is disposed on one side of the intake section in the horizontal direction.

4. The air conditioning system according to claim 3.

5. The fan is provided in the internal space of the electrical box above the intake section. The air conditioning system according to claim 1 .

6. a low-temperature component provided in the internal space of the casing, the low-temperature component being provided in a part of a refrigeration cycle including the heat exchanger and having a lower temperature than the electrical component; the low-temperature component is provided at a position facing the intake section, The fan introduces the air that has passed through the low-temperature components in the casing into the internal space of the electrical box through the intake portion. The air conditioning system according to claim 1 .

7. The low-temperature component is at least one of an accumulator and a receiver that constitute the refrigeration cycle.

7. The air conditioning system according to claim 6.

8. The electrical box is disposed above the low-temperature component.

7. The air conditioning system according to claim 6.

9. The exhaust section opens upward. The air conditioning system according to claim 1 .

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