Air Conditioning Equipment

Abstract

To provide an air conditioning device in which a first hose is drawn from a piping hole to the outside of a room together with other pipes including a second hose for discharging drain water from the inside of an indoor unit to the outside of the room, and in which a space that can be occupied by the first hose in the piping hole can be increased.SOLUTION: An air conditioning device (1) comprises: an indoor unit (10) installed inside a room; an outdoor unit (20) installed outside the room; a first hose (50) of which one end part is connected to the indoor unit (10), and for introducing air from the outside of the room to the inside of the room, or discharging it from the inside of the room to the outside of the room; and a second hose (70) of which one end part is connected to the indoor unit (10), and for discharging drain water from the inside of the indoor unit (10) to the outside of the room. The cross-sectional area of the first hose (50) is 2.0 or more times as large as the cross-sectional area of the second hose (70).SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] A conventional air conditioner includes an indoor unit, an outdoor unit connected to the indoor unit via a refrigerant pipe, and a humidification unit provided adjacent to the outdoor unit (see Patent Document 1). The conventional air conditioner includes a humidification duct connected to the humidification unit for taking air from the outside to the inside of the room, and a drain hose for discharging condensed water from inside the indoor unit to the outside. The humidification duct, refrigerant pipe, and drain hose are inserted into piping holes provided in a wall between the inside and outside of the room.

[0003] Another conventional air conditioner includes an indoor unit equipped with an exhaust unit, and an outdoor unit connected to the indoor unit via a refrigerant pipe (see Patent Document 1). The other conventional air conditioner includes an exhaust duct connected to the exhaust unit for discharging air from the room to the outside, and a drain hose for discharging condensed water from inside the indoor unit to the outside. The exhaust duct, refrigerant pipe, and drain hose are inserted into piping holes provided in a wall between the room and the outside. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2003-329262 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the conventional air conditioners described above, it is sometimes impossible to secure a sufficient space for the humidifying duct within the piping hole, and in such cases, the diameter of the humidifying duct cannot be made large, and a sufficient amount of air cannot be supplied.

[0006] In the conventional air conditioners described above, it is sometimes impossible to secure a sufficient space for the exhaust duct within the piping hole, and in this case, the diameter of the exhaust duct cannot be made large, and a sufficient exhaust volume cannot be secured.

[0007] The present disclosure aims to provide an air conditioning apparatus that can ensure sufficient ventilation in an air conditioning apparatus in which a first hose that takes in air from the outside to the inside or discharges air from the inside to the outside is inserted into a piping hole together with other piping such as a second hose that discharges drain water from inside the indoor unit to the outside. [Means for solving the problem]

[0008] The air conditioning apparatus of the present disclosure is An indoor unit installed indoors; An outdoor unit installed outdoors; A first hose having one end connected to the indoor unit and adapted to take in air from the outside to the inside of the room or to exhaust air from the inside of the room to the outside of the room; a second hose having one end connected to the indoor unit and configured to discharge drain water from inside the indoor unit to the outside of the room; Equipped with The cross-sectional area of ​​the first hose is at least 2.0 times the cross-sectional area of ​​the second hose.

[0009] According to the present disclosure, since the cross-sectional area of ​​the first hose is 2.0 times or more the cross-sectional area of ​​the second hose, the space occupied by the second hose in the piping hole is smaller than when the cross-sectional area of ​​the first hose is less than 2.0 times the cross-sectional area of ​​the second hose. Therefore, the space that the first hose can take in the piping hole can be increased. As a result, the cross-sectional area of ​​the first hose can be increased, and a sufficient amount of ventilation can be ensured.

[0010] In the air conditioning apparatus of one embodiment, a cross-sectional area of ​​the first hose is 2.3 times or more the cross-sectional area of ​​the second hose.

[0011] In the air conditioning apparatus of one embodiment, the cross-sectional area of ​​the first hose is 2.7 times or more the cross-sectional area of ​​the second hose.

[0012] An air conditioning apparatus according to one embodiment includes: a first covering material that covers the first hose; a second covering material covering the second hose; Equipped with The second coating material has a thickness smaller than that of the first coating material.

[0013] According to the above embodiment, since the thickness of the second covering material is thinner than that of the first covering material, the space occupied by the second covering material in the piping hole can be made smaller than when the thickness of the second covering material is thicker than that of the first covering material. This makes it possible to increase the space available for the first hose in the piping hole. As a result, the cross-sectional area of ​​the first hose can be increased, ensuring a sufficient amount of ventilation.

[0014] In one embodiment, the second covering material has a thickness of 3.5 mm or less.

[0015] In one embodiment, the second covering material has an outer diameter of 28 mm or less.

[0016] In one embodiment, the air conditioning apparatus includes: The indoor unit is connected to the outdoor unit via a refrigerant pipe, The second hose, together with the refrigerant pipe, is covered with a third covering material.

[0017] In the above embodiment, since the second hose is covered by the third covering material together with the refrigerant pipe, the space occupied by the covering material in the pipe hole can be made smaller than when the second hose is covered separately from the refrigerant pipe. This makes it possible to increase the space available for the first hose in the pipe hole. As a result, the cross-sectional area of ​​the first hose can be increased, ensuring a sufficient amount of ventilation.

[0018] In one embodiment, the second hose has an inner diameter of 19 mm or less.

[0019] In one embodiment, the cross-sectional area of ​​the second hose is 347 mm2 The following is the result.

[0020] In one embodiment of the air conditioning apparatus, the cross-sectional area of ​​the first hose is 615 mm 2 That's all.

[0021] In the air conditioner of one embodiment, the second hose is made of copper.

[0022] According to the above embodiment, the antibacterial effect of copper can suppress the proliferation of bacteria in the second hose.

[0023] In one embodiment, the air conditioning apparatus includes: The second hose is A first portion having one end connected to the indoor unit; a second portion having a cross-sectional area smaller than the cross-sectional area of ​​the first portion; Equipped with The first and second portions are connected via a different diameter socket.

[0024] According to the above embodiment, by inserting the second portion of the second hose into the piping hole, the space occupied by the second hose in the piping hole can be made smaller than when the first portion is disposed in the piping hole. This makes it possible to increase the space available for the first hose in the piping hole. As a result, the cross-sectional area of ​​the first hose can be increased, ensuring a sufficient amount of ventilation.

[0025] In one embodiment, the first hose is positioned higher than the second hose at the outlet of the indoor unit.

[0026] Since the cross-sectional area of ​​the first hose is larger than that of the second hose, the first hose is harder to bend than the second hose. Therefore, if the first hose is located lower than the second hose at the outlet of the indoor unit, it becomes difficult to handle the first hose and the second hose when bending them downward from the outlet of the piping hole. More specifically, when bending the first hose and the second hose downward from the outlet of the piping hole, it is necessary to bend the first hose with a bending radius smaller than the bending radius of the second hose, and it becomes difficult to handle the first hose. In contrast, in the above embodiment, since the first hose is located higher than the second hose at the outlet of the indoor unit, it is easy to handle even if the first hose becomes large. More specifically, when bending the first hose and the second hose downward from the outlet of the piping hole, it is possible to bend the first hose with a bending radius larger than the bending radius of the second hose, so that it is easy to handle the first hose. [Brief description of the drawings]

[0027] [Figure 1] 1 is a schematic configuration diagram of an air conditioning apparatus according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a perspective view showing a state in which a liquid refrigerant pipe, a gas refrigerant pipe, a ventilation hose, and a drain hose are pulled out from an indoor unit in the air conditioning apparatus pertaining to the first embodiment. [Diagram 3] 3 is a cross-sectional view showing a state in which a liquid refrigerant pipe, a gas refrigerant pipe, a ventilation hose, and a drain hose are inserted into piping holes according to the first embodiment. FIG. [Figure 4] 11 is a cross-sectional view showing a liquid refrigerant pipe, a gas refrigerant pipe, a ventilation hose, and a drain hose according to a second embodiment being inserted into piping holes. FIG. [Diagram 5] FIG. 11 is a schematic configuration diagram of an air conditioning apparatus according to a third embodiment. [Figure 6] FIG. 11 is a schematic configuration diagram of an air conditioning apparatus according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, an air-conditioning apparatus according to an embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0029] In the following description, the "cross-sectional area" of a tubular member refers to the area of ​​the portion surrounded by the outer periphery of the tubular member in a cross section perpendicular to the direction in which the tubular member extends. Therefore, the definition of the "cross-sectional area" of a tubular member in this disclosure differs from the definition of the cross-sectional area of ​​a general tubular member. Specifically, the definition of the "cross-sectional area" of a tubular member in this disclosure differs from the cross-sectional area of ​​the portion surrounded by the outer periphery minus the cross-sectional area of ​​the portion surrounded by the inner periphery in a cross section perpendicular to the direction in which the tubular member extends.

[0030] In addition, in the following description, for ease of explanation, terms indicating directions such as "up," "down," "front," and "rear" are used assuming normal use, but this is not meant to limit the use state of the air conditioning device according to the present disclosure.

[0031] [First embodiment] FIG. 1 is a schematic configuration diagram of an air conditioner 1 according to this embodiment.

[0032] Referring to FIG. 1, an air conditioner 1 includes an indoor unit 10 installed indoors, and an outdoor unit 20 installed outdoors.

[0033] The indoor unit 10 includes an indoor heat exchanger 11 and an indoor fan 12 that sends air to the indoor heat exchanger 11.

[0034] The outdoor unit 20 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an electric expansion valve 24, an accumulator 25, and an outdoor fan 26 that sends air to the outdoor heat exchanger 23.

[0035] During heating operation, the air conditioning device 1 switches the four-way switching valve 22 to the solid line switching position to start the compressor 21, while during cooling operation and dehumidification operation, the air conditioning device 1 switches the four-way switching valve 22 to the dotted line switching position to start the compressor 21.

[0036] The indoor unit 10 is connected to the outdoor unit 20 via a liquid refrigerant piping 30 and a gas refrigerant piping 40.

[0037] The liquid refrigerant piping 30 is tubular. Liquid refrigerant flows inside the liquid refrigerant piping 30. One end of the liquid refrigerant piping 30 is connected to the electric expansion valve 24 via a refrigerant piping connection portion 31. The other end of the liquid refrigerant piping 30 is connected to the indoor heat exchanger 11. The liquid refrigerant piping 30 according to this embodiment is an example of a refrigerant piping according to the present disclosure.

[0038] The gas refrigerant piping 40 is tubular. Gas refrigerant flows inside the gas refrigerant piping 40. One end of the gas refrigerant piping 40 is connected to the four-way switching valve 22 via a refrigerant piping connection portion 41. The other end of the gas refrigerant piping 40 is connected to the indoor heat exchanger 11. The gas refrigerant piping 40 according to this embodiment is an example of refrigerant piping according to the present disclosure.

[0039] The air conditioning device 1 of the present embodiment includes an air supply hose 50 that takes air from the outdoors into the rooms. One end of the air supply hose 50 is connected to the indoor unit 10. The air supply hose 50 according to the present embodiment is an example of a first hose according to the present disclosure.

[0040] In this embodiment, a ventilation device 60 is provided in the outdoor unit 20. The ventilation device 60 is connected to the indoor unit 10 via an air intake hose 50. The ventilation device 60 includes an intake fan 61 and an air intake port 62. When the intake fan 61 rotates, outside air is taken into the outdoor unit 20 from the air intake port 62. The air taken into the outdoor unit 20 is supplied into the indoor unit 10 via the intake fan 61 and the air intake hose 50. The outside air supplied to the indoor unit 10 is supplied into the room via an air intake filter (not shown) and the indoor heat exchanger 11.

[0041] 2 is a schematic perspective view of the indoor unit 10 as viewed from the rear side. In the air conditioning device 1 according to this embodiment, a liquid refrigerant piping 30, a gas refrigerant piping 40, an air supply hose 50, and a drain hose 70 described later are pulled out from the indoor unit 10.

[0042] 2, the indoor unit 10 has a substantially rectangular parallelepiped casing 13. The back side of the casing 13 is open. Inside the casing 13, an indoor heat exchanger 11 (shown in FIG. 1), an indoor fan 12 (shown in FIG. 1), and a drain pan (not shown) that receives drain water generated in the indoor heat exchanger 11 are arranged. The indoor unit 10 is hooked onto and fixed to a mounting plate 14 fixed to the wall surface, and is thereby installed on the wall surface.

[0043] The air conditioning apparatus 1 (shown in FIG. 1) of this embodiment includes a drain hose 70, one end of which is connected to the indoor unit 10 and which discharges drain water from within the indoor unit 10 to the outside of the room. The drain hose 70 is tubular. One end of the drain hose 70 is connected to the drain pan and guides the drain water accumulated in the drain pan to the outside of the room. The material of the drain hose 70 of this embodiment is copper. The material of the drain hose 70 is not limited to copper, and may be resin. The drain hose 70 according to this embodiment is an example of a second hose according to the present disclosure.

[0044] The drain hose 70 includes a first portion 70a, one end of which is connected to the indoor unit 10, and a second portion 70b having a smaller cross-sectional area than the first portion 70a. The first portion 70a and the second portion 70b are connected via a different diameter socket 80.

[0045] One end of the first portion 70a is connected to the drain pan. The other end of the first portion 70a is connected to the different diameter socket 80. The other end of the first portion 70a is located between a connection portion between the drain pan and the drain hose 70 and a piping hole H (shown in FIG. 3) (described later) provided in the wall surface. In other words, the entire first portion 70a is disposed inside the casing 13.

[0046] One end of the second portion 70b is connected to the different diameter socket 80. The other end of the second portion 70b is disposed outside the chamber. In this embodiment, the outer diameter of the second portion 70b is smaller than the outer diameter of the first portion 70a.

[0047] The different diameter socket 80 is tubular. The different diameter socket 80 includes a large diameter portion 80a and a small diameter portion 80b having a smaller cross-sectional area than the large diameter portion 80a. The large diameter portion 80a is connected to the first portion 70a of the drain hose 70. The small diameter portion 80b of the different diameter socket 80 is connected to the second portion 70b of the drain hose 70. The different diameter socket 80 is disposed inside the casing 13. More specifically, the different diameter socket 80 is disposed between the connection portion between the drain pan and the drain hose 70 and the outlet 10a of the indoor unit 10 described later.

[0048] An outlet 10a is formed on the rear side of the indoor unit 10 for pulling out the liquid refrigerant pipe 30, the gas refrigerant pipe 40, the air supply hose 50, and the drain hose 70 from inside the indoor unit 10. The outlet 10a of the indoor unit 10 is a part of the opening on the rear side of the casing 13 that is not covered by the installation plate 14. The outlet 10a of the indoor unit 10 of this embodiment is formed in a corner formed by the side plate and bottom plate of the casing 13 when the indoor unit 10 is viewed from the rear side. More specifically, the outlet 10a of the indoor unit 10 of this embodiment is formed in a corner formed by the right side plate and bottom plate when the indoor unit 10 is viewed from the rear side.

[0049] At the outlet 10a of the indoor unit 10, the air intake hose 50 is located above the drain hose 70. Above the drain hose 70 includes the case where the axis of the air intake hose 50 is above the axis of the drain hose 70. In addition, above is not limited to directly above, but also includes diagonally above.

[0050] 3 is a cross-sectional view showing the liquid refrigerant piping 30, the gas refrigerant piping 40, the air supply hose 50, and the drain hose 70 being inserted into a piping hole H. The piping hole H is provided in the wall surface on which the indoor unit 10 is installed. The liquid refrigerant piping 30, the gas refrigerant piping 40, the air supply hose 50, and the drain hose 70 are pulled out from inside the indoor unit 10 via the outlet 10a (shown in FIG. 2) of the indoor unit 10 described above, and are pulled to the outside through the piping hole H.

[0051] The liquid refrigerant piping 30, gas refrigerant piping 40, air supply hose 50, and drain hose 70 in Fig. 3 are illustrated as extending in a direction perpendicular to the plane of the page. In other words, Fig. 3 illustrates cross sections perpendicular to the direction in which the liquid refrigerant piping 30, gas refrigerant piping 40, air supply hose 50, and drain hose 70 extend.

[0052] 3, the liquid refrigerant pipe 30, the gas refrigerant pipe 40, the air supply hose 50, and the drain hose 70 are inserted into the piping hole H. More specifically, the liquid refrigerant pipe 30, the gas refrigerant pipe 40, the air supply hose 50, and the second portion 70b of the drain hose 70 are inserted into the piping hole H. A sleeve S is fitted to the inner circumferential surface defining the piping hole H. The air supply hose 50, the second portion 70b of the drain hose 70, the liquid refrigerant pipe 30, and the gas refrigerant pipe 40 are inserted into this sleeve S. In addition to the liquid refrigerant pipe 30, the gas refrigerant pipe 40, the air supply hose 50, and the drain hose 70, electric wires (not shown) and the like are also inserted into the sleeve S. The diameter of the piping hole H in this embodiment is 80 mm.

[0053] The air intake hose 50 of this embodiment is tubular and has a circular cross-sectional shape in the cross section shown in Figure 3. In this embodiment, the outside diameter of the air intake hose 50 is 30.6 mm. The cross-sectional area of ​​the air intake hose 50 is about 735 mm. 2 3, the air intake hose 50 is bellows-shaped, and the outer diameter of the air intake hose 50 refers to the diameter of the outermost portion of the air intake hose 50.

[0054] The outer periphery of the air supply hose 50 is covered with a first insulating material 51. The thermal conductivity of the first insulating material 51 in this embodiment is 0.035 (W / m K). The first insulating material 51 in this embodiment is an example of a first covering material according to the present disclosure.

[0055] The first insulating material 51 is tubular and has a circular cross-sectional shape in the cross section shown in FIG. 3. The thickness of the first insulating material 51 is 3.5 mm. The outer diameter of the first insulating material 51 is 37.6 mm. The cross-sectional area of ​​the first insulating material 51 is about 1110 mm. 2 The inside diameter of the first insulating material 51 is 30.6 mm, which is the same as the outside diameter of the air supply hose 50.

[0056] The drain hose 70 of this embodiment is tubular and has a circular cross-sectional shape in the cross section shown in Fig. 3. The outer diameter of the drain hose 70 is 21 mm. The cross-sectional area of ​​the drain hose 70 is about 346 mm 2 The inner diameter of the drain hose 70 is 19 mm. Although shown diagrammatically in FIG. 3, the drain hose 70 has a bellows shape. The outer diameter of the drain hose 70 refers to the diameter of the outermost periphery of the drain hose 70. The inner diameter of the drain hose 70 refers to the diameter of the innermost periphery of the drain hose 70.

[0057] The outer periphery of the drain hose 70 is covered with a second insulating material 71. The thermal conductivity of the second insulating material 71 in this embodiment is 0.022 (W / m K). The second insulating material 71 in this embodiment is an example of a second covering material according to the present disclosure.

[0058] The second insulating material 71 is tubular and has a circular cross-sectional shape in the cross section shown in FIG. 3. The second insulating material 71 has a thickness of 2.2 mm. The thickness of the second insulating material 71 is thinner than the thickness of the first insulating material 51. The outer diameter of the second insulating material 71 is 25.4 mm. The cross-sectional area of ​​the second insulating material 71 is about 506 mm. 2 The inner diameter of the second insulating material 71 is 21 mm, which is the same as the outer diameter of the drain hose 70.

[0059] As described above, the cross-sectional area of ​​the air supply hose 50 is about 735 mm 2 The cross-sectional area of ​​the drain hose 70 is about 346 mm 2 In this embodiment, the cross-sectional area of ​​the air supply hose 50 is about 2.12 times the cross-sectional area of ​​the drain hose 70.

[0060] The liquid refrigerant pipe 30 of this embodiment has a circular cross-sectional shape in the cross section shown in Fig. 3. The outer diameter of the liquid refrigerant pipe 30 is 6.3 mm.

[0061] The outer periphery of the liquid refrigerant pipe 30 is covered with a third insulating material 32. In this embodiment, the third insulating material 32 has a thermal conductivity of 0.040 (W / m·K).

[0062] The third insulating material 32 is tubular and has a circular cross-sectional shape in the cross section shown in FIG. 3. The thickness of the third insulating material 32 is 8.0 mm. The outer diameter of the third insulating material 32 is 24 mm. The cross-sectional area of ​​the third insulating material 32 is about 452 mm. 2 In other words, the cross-sectional area of ​​the portion surrounded by the outer periphery of the third insulating material 32 is about 452 mm 2 It is.

[0063] The gas refrigerant pipe 40 of this embodiment has a circular cross-sectional shape in the cross section shown in Fig. 3. The outer diameter of the gas refrigerant pipe 40 is 9.5 mm.

[0064] The outer periphery of the gas refrigerant pipe 40 is covered with a fourth insulating material 42. The thermal conductivity of the fourth insulating material 42 in this embodiment is 0.040 (W / m·K).

[0065] The fourth insulating material 42 is tubular and has a circular cross-sectional shape in the cross section shown in FIG. 3. The fourth insulating material 42 has a thickness of 8.0 mm. The outer diameter of the fourth insulating material 42 is 27 mm. The cross-sectional area of ​​the fourth insulating material 42 is about 572 mm. 2 In other words, the cross-sectional area of ​​the portion surrounded by the outer periphery of the fourth insulating material 42 is about 572 mm 2 It is.

[0066] The inner diameter of the sleeve S is 76 mm. The cross-sectional area of ​​the space defined by the inner peripheral surface of the sleeve S is approximately 4536 mm. 2 In contrast, as described above, the cross-sectional area of ​​the air supply hose 50 is about 735 mm 2 The air supply hose 50 occupies about 16% of the cross-sectional area of ​​the space defined by the inner circumferential surface of the sleeve S.

[0067] In this embodiment, the cross-sectional area of ​​the air supply hose 50 is about 2.12 times that of the drain hose 70, but is not limited thereto and may be 2.0 times or more that of the drain hose 70. The cross-sectional area of ​​the air supply hose 50 is preferably 2.3 times or more that of the drain hose 70. The cross-sectional area of ​​the air supply hose 50 is further preferably 2.7 times or more that of the drain hose 70.

[0068] Furthermore, the dimensions of the air supply hose 50 and the drain hose 70 have been described above, but these dimensions can be changed as appropriate as long as the cross-sectional area of ​​the air supply hose 50 is at least 2.0 times the cross-sectional area of ​​the drain hose 70.

[0069] The cross-sectional area of ​​the air supply hose 50 is approximately 735 mm 2 However, the present invention is not limited to this. The cross-sectional area of ​​the air supply hose 50 is 615 mm 2 Over 866mm 2 The outside diameter of the air supply hose 50 is preferably 28 mm or more and 33.2 mm or less.

[0070] The cross-sectional area of ​​the drain hose 70 is approximately 346 mm 2 However, the present invention is not limited to this. The cross-sectional area of ​​the drain hose 70 is 347 mm 2 In other words, the outer diameter of the drain hose 70 is preferably 21 mm or less.

[0071] Although the inner diameter of the drain hose 70 is 19 mm, the present invention is not limited to this. The inner diameter of the drain hose 70 is preferably 19 mm or less.

[0072] Furthermore, although the dimensions of the first insulating material 51, the second insulating material 71, the liquid refrigerant pipe 30, the third insulating material 32, the gas refrigerant pipe 40, and the fourth insulating material 42 have been described above, these dimensions can also be changed as appropriate.

[0073] In this embodiment, the thickness of the first insulating material 51 is 3.5 mm, but is not limited thereto. The thickness of the first insulating material 51 is preferably 1.1 mm or more and 3.5 mm or less. The thickness of the first insulating material 51 is more preferably 1.1 mm or more and 2.2 mm or less. For example, when the thickness of the first insulating material 51 is 2.2 mm, the space occupied by the first insulating material 51 in the piping hole H is smaller than when the thickness of the first insulating material 51 is 3.5 mm, so that the space that the air supply hose 50 can take is larger. When the thickness of the first insulating material 51 is reduced from 3.5 mm to 2.2 mm, the thermal conductivity of the first insulating material 51 is changed from 0.035 (W / m·K) to 0.022 (W / m·K) to ensure the same thermal insulation performance.

[0074] In this embodiment, the thickness of the second insulating material 71 is 2.2 mm, but is not limited to this. The second insulating material 71 may be thicker or thinner than 2.2 mm. The thickness of the second insulating material 71 is preferably 1.1 mm or more and 3.5 mm or less. The thickness of the second insulating material 71 is more preferably 1.1 mm or more and 2.2 mm or less.

[0075] In this embodiment, the outer diameter of the second insulating material 71 is 25.4 mm, but is not limited to this. The outer diameter of the second insulating material 71 is preferably 28 mm or less.

[0076] The air conditioning device 1 according to this embodiment has the following functions.

[0077] According to this embodiment, the cross-sectional area of ​​the air supply hose 50 is 2.0 times or more (more specifically, approximately 2.12 times) the cross-sectional area of ​​the drain hose 70, so the space occupied by the drain hose 70 in the piping hole H is smaller than when the cross-sectional area of ​​the air supply hose 50 is less than 2.0 times the cross-sectional area of ​​the drain hose 70. This makes it possible to increase the space that the air supply hose 50 can take up in the piping hole H. As a result, the cross-sectional area of ​​the air supply hose 50 can be increased, ensuring a sufficient amount of ventilation.

[0078] According to this embodiment, because the thickness of the second insulating material 71 is thinner than the thickness of the first insulating material 51, the space occupied by the second insulating material 71 in the piping hole H can be made smaller than when the thickness of the second insulating material 71 is thicker than the thickness of the first insulating material 51. This makes it possible to increase the space available for the air supply hose 50 in the piping hole H. As a result, the cross-sectional area of ​​the air supply hose 50 can be increased, ensuring a sufficient amount of ventilation.

[0079] According to this embodiment, since the drain hose 70 is made of copper, the antibacterial effect of copper can suppress the growth of bacteria within the drain hose 70.

[0080] According to the present embodiment, by inserting the second portion 70b of the drain hose 70 into the piping hole H, the space occupied by the drain hose 70 in the piping hole H can be made smaller than when the first portion is disposed in the piping hole H. This increases the space available for the air supply hose 50 in the piping hole H. As a result, the cross-sectional area of ​​the air supply hose 50 can be increased, ensuring a sufficient amount of ventilation.

[0081] Since the outer diameter of the air intake hose 50 is larger than the outer diameter of the drain hose 70, the air intake hose 50 is harder to bend than the drain hose 70. Therefore, if the air intake hose 50 is located lower than the drain hose 70 at the outlet 10a of the indoor unit 10, it becomes difficult to handle the air intake hose 50 and the drain hose 70 when bending them downward from the outlet of the piping hole H. More specifically, when bending the air intake hose 50 and the drain hose 70 downward from the outlet of the piping hole H, it is necessary to bend the air intake hose 50 with a bending radius smaller than the bending radius of the drain hose 70, and it becomes difficult to handle the air intake hose 50. In contrast, according to this embodiment, the air intake hose 50 is located higher than the drain hose 70 at the outlet 10a of the indoor unit 10, so that even if the air intake hose 50 becomes large, it is easy to handle it. More specifically, when the air supply hose 50 and the drain hose 70 are bent downward from the exit of the piping hole H, the air supply hose 50 can be bent with a bending radius larger than the bending radius of the drain hose 70, making it easier to handle the air supply hose 50.

[0082] [Second embodiment] 4 is a cross-sectional view showing a state in which the liquid refrigerant piping 30, the gas refrigerant piping 40, the air supply hose 50, and the drain hose 70 according to the second embodiment are inserted into a piping hole H. The air conditioning apparatus 101 of the second embodiment differs from the air conditioning apparatus 1 of the first embodiment in that the drain hose 70 is covered together with the liquid refrigerant piping 30 by a fifth insulating material 190. In the second embodiment, the same configurations as those of the first embodiment are denoted by the same reference symbols, and detailed descriptions thereof will be omitted by referring to FIGS. 1 and 2 and the description thereof of the first embodiment. In this embodiment, the air conditioning apparatus 1 in FIGS. 1 and 2 and the description thereof of the first embodiment is read as the air conditioning apparatus 101.

[0083] 4, in this embodiment, the drain hose 70 is covered together with the liquid refrigerant pipe 30 by a fifth insulating material 190. The fifth insulating material 190 of this embodiment has the same insulating performance as the third insulating material 32 (shown in FIG. 3) of the first embodiment. The fifth insulating material 190 of this embodiment is an example of a third covering material according to the present disclosure.

[0084] The air conditioner 101 according to the second embodiment has the same functions as the air conditioner 1 according to the first embodiment.

[0085] According to the present embodiment, because the drain hose 70 and the liquid refrigerant piping 30 are covered together with the fifth insulating material 190, the space occupied by the insulating material in the piping hole H can be made smaller than when the drain hose 70 and the liquid refrigerant piping 30 are covered with separate insulating materials. This makes it possible to increase the space available to the air supply hose 50 in the piping hole H. As a result, the cross-sectional area of ​​the air supply hose 50 can be increased, and the amount of ventilation by the ventilation device 60 can be ensured.

[0086] In the present embodiment, the drain hose 70 and the liquid refrigerant pipe 30 are collectively covered with the fifth insulating material 190, but this is not limited to the above. The drain hose 70 may be collectively covered with the fifth insulating material 190 together with the gas refrigerant pipe 40. Here, the difference in temperature between the drain hose 70 and the liquid refrigerant pipe 30 is smaller than the difference in temperature between the drain hose 70 and the gas refrigerant pipe 40. For this reason, when the drain hose 70 and the liquid refrigerant pipe 30 are collectively covered with the fifth insulating material 190, heat loss is reduced compared to when the drain hose 70 and the gas refrigerant pipe 40 are collectively covered with the fifth insulating material 190. For this reason, covering the drain hose 70 and the liquid refrigerant pipe 30 collectively with the fifth insulating material 190 is preferable from the viewpoint of heat loss.

[0087] [Third embodiment] FIG. 5 is a schematic diagram of an air conditioner 201 according to the third embodiment. The air conditioner 1 of the third embodiment differs from the air conditioner 1 of the first embodiment in that it is equipped with an exhaust hose 250 and an exhaust device 260 instead of the intake hose 50 (shown in FIG. 1) and the ventilation device 60 (shown in FIG. 1). In the third embodiment, components similar to those in the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof will be omitted by referring to FIGS. 2 and 3 of the first embodiment and the description thereof. In this embodiment, the intake hose 50 in FIGS. 2 and 3 of the first embodiment and the description thereof will be read as an exhaust hose 250.

[0088] Referring to FIG. 5, the air conditioning device 201 of this embodiment includes an exhaust hose 250 that exhausts air from the room to the outside. One end of the exhaust hose 250 is connected to the indoor unit 10. The other end of the exhaust hose 250 is disposed outside the room. The exhaust hose 250 according to this embodiment is an example of a first hose according to the present disclosure. The exhaust hose 250 of this embodiment is covered with a first insulating material 51, similar to the air supply hose 50 of the first embodiment. The exhaust hose 250 of this embodiment is similar to the air supply hose 50 of the first embodiment in terms of dimensions and positional relationship with other components.

[0089] In this embodiment, an exhaust device 260 is provided in the indoor unit 10. The exhaust device 260 is connected to the outside of the room via an exhaust hose 250. The exhaust device 260 includes an intake fan 261 and an intake port 262. When the intake fan 261 rotates, air is taken from the room into the indoor unit 10 via the intake port 262. The air taken into the indoor unit 10 is exhausted to the outside of the room via the intake fan 261 and the exhaust hose 250.

[0090] The air conditioner 201 according to the third embodiment has the same functions as the air conditioner 1 according to the first embodiment.

[0091] [Fourth embodiment] FIG. 6 is a schematic diagram of an air conditioner 301 according to the fourth embodiment. The air conditioner 1 of the fourth embodiment differs from the air conditioner 1 of the first embodiment in that it is equipped with a humidification hose 350 and a humidification device 360 ​​instead of the air supply hose 50 (shown in FIG. 1) and the ventilation device 60 (shown in FIG. 1). In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted by referring to FIGS. 2 and 3 of the first embodiment and the description thereof. In this embodiment, the air supply hose 50 in FIGS. 2 and 3 of the first embodiment and the description thereof will be read as a humidification hose 350.

[0092] Referring to FIG. 6, an air conditioner 301 of the present embodiment includes a humidification hose 350 that takes in air from the outdoors into the rooms. One end of the humidification hose 350 is connected to the indoor unit 10. The humidification hose 350 according to the present embodiment is an example of a first hose according to the present disclosure. The humidification hose 350 of the present embodiment is covered with a first insulating material 51, similar to the air intake hose 50 of the first embodiment. The dimensions of the humidification hose 350 of the present embodiment and its positional relationship with other components are similar to those of the air intake hose 50 of the first embodiment.

[0093] In this embodiment, the humidifier 360 is provided in the outdoor unit 20. The humidifier 360 is connected to the indoor unit 10 via a humidifier hose 350. The humidifier 360 includes a humidifier body 361 having an intake fan, and an intake port 362. When the intake fan rotates, outside air is taken into the outdoor unit 20 from the intake port 362. The air taken into the outdoor unit 20 is supplied to the indoor unit 10 via the humidifier body 361 and the humidifier hose 350. Here, the air taken into the outdoor unit 20 is supplied to the indoor unit 10 in a humidified state by the humidifier body 361. The outside air supplied to the indoor unit 10 is supplied to the room via an intake air filter (not shown) and the indoor heat exchanger 11.

[0094] The air conditioner 301 according to the fourth embodiment has the same functions as the air conditioner 1 according to the first embodiment.

[0095] Although the embodiments have been described above, it will be understood that various changes in form and details are possible without departing from the spirit and scope of the claims. [Explanation of symbols]

[0096] 1. Air conditioning equipment 10 Indoor unit 10a exit 11 Indoor heat exchanger 12 Indoor fan 13 Casing 14 Mounting plate 20 Outdoor unit 21 Compressor 22 Four-way valve 23 Outdoor heat exchanger 24 Electric expansion valve 25 Accumulator 26 Outdoor fan 30 Liquid refrigerant piping (refrigerant piping) 31 Refrigerant piping connection 32 Third insulation material 40 Gas refrigerant piping (refrigerant piping) 41 Refrigerant piping connection 50 Air supply hose (first hose) 51 First insulation material (first covering material) 60 Ventilation System 61 Intake fan 62 Air Intake 70 Drain hose (second hose) 70a Part 1 70b Part 2 71 Second insulation material (second coating material) 80 Different Diameter Socket 80a Large diameter section 80b Small diameter section 101 Air conditioning equipment 190 5th insulation material (3rd coating material) 201 Air conditioning equipment 250 Exhaust hose (first hose) 260 Exhaust system 261 Intake fan 262 Air Intake 301 Air conditioning equipment 350 Humidification hose (first hose) 360 humidifier 361 Humidifier unit 362 Air Intake

Claims

1. An indoor unit (10) installed indoors; An outdoor unit (20) installed outdoors; a first hose (50, 250, 350) having one end connected to the indoor unit (10) and adapted to take in air from the outside of the room into the room or to exhaust air from the inside of the room to the outside of the room; a second hose (70) having one end connected to the indoor unit (10) and discharging drain water from inside the indoor unit (10) to the outside of the room; a liquid refrigerant pipe (30) that connects the indoor unit (10) and the outdoor unit (20), is covered with a covering material (32), and through which a liquid refrigerant flows; a gas refrigerant pipe (40) that connects the indoor unit (10) and the outdoor unit (20), is covered with a covering material (42), and through which a gas refrigerant flows; a tubular first covering material (51) that covers the first hose (50, 250, 350); a tubular second covering material (71) covering the second hose (70); Equipped with a cross-sectional area of ​​the first hose (50, 250, 350) is 2.0 times or more the cross-sectional area of ​​the second hose (70), The first hose (50, 250, 350), the second hose (70), the liquid refrigerant piping (30), and the gas refrigerant piping (40) are configured to be inserted into a piping hole (H) provided in a wall surface on which the indoor unit (10) is installed, The thickness of the second covering material (71) is smaller than the thickness of the first covering material (51), The air conditioning device (1, 101, 201, 301), wherein the thickness of the second covering material (71) is 3.5 mm or less.

2. 2. The air conditioner (1, 101, 201, 301) according to claim 1, wherein the cross-sectional area of ​​the first hose (50, 250, 350) is at least 2.3 times the cross-sectional area of ​​the second hose (70).

3. 2. The air conditioner (1, 101, 201, 301) according to claim 1, wherein the cross-sectional area of ​​the first hose (50, 250, 350) is at least 2.7 times the cross-sectional area of ​​the second hose (70).

4. The air conditioner (1, 101, 201, 301) according to any one of claims 1 to 3, wherein an outer diameter of the second covering material (71) is 28 mm or less.

5. The air conditioning apparatus (1, 101, 201, 301) according to any one of claims 1 to 4, wherein the second hose (70) has an inner diameter of 19 mm or less.

6. The cross-sectional area of ​​the second hose (70) is 347 mm ２ The air conditioning device (1, 101, 201, 301) according to any one of claims 1 to 5, wherein:

7. The cross-sectional area of ​​the first hose (50, 250, 350) is 615 mm ２ The air conditioning device (1, 101, 201, 301) according to any one of claims 1 to 6.

8. The air conditioner (1, 101, 201, 301) according to any one of claims 1 to 7, wherein the second hose (70) is made of copper.

9. The air conditioner (1, 101, 201, 301) according to any one of claims 1 to 8, wherein the first hose (50, 250, 350) is located higher than the second hose (70) at the outlet (10a) of the indoor unit (10).

Images