JP7657118B2 - Air Conditioning Equipment - Google Patents

Description

This disclosure relates to air conditioning devices.

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 that takes air from the outside to the inside of the room, and a drain hose that discharges 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 the wall between the inside and outside of the room.

Another conventional air conditioning device 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 conditioning device 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 the indoor unit to the outside. The exhaust duct, refrigerant pipe, and drain hose are inserted into piping holes provided in the wall between the room and the outside.

JP 2003-329262 A

In the conventional air conditioning system described above, it is sometimes impossible to secure sufficient space for the humidifying duct within the piping hole. In this case, the diameter of the humidifying duct cannot be made large, and a sufficient amount of air cannot be supplied.

In other conventional air conditioning devices, it is sometimes impossible to secure sufficient space for the exhaust duct within the piping hole. In this case, the diameter of the exhaust duct cannot be made large, and a sufficient exhaust volume cannot be secured.

The present disclosure aims to provide an air conditioner that can ensure sufficient ventilation in an air conditioner 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.

The air conditioning device 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;
The cross-sectional area of the first hose is at least 2.0 times the cross-sectional area of the second hose.

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. This makes it possible to increase the space that the first hose can take up in the piping hole. As a result, the cross-sectional area of the first hose can be increased, ensuring a sufficient amount of ventilation.

In one embodiment of the air conditioning device, the cross-sectional area of the first hose is at least 2.3 times the cross-sectional area of the second hose.

In one embodiment of the air conditioning device, the cross-sectional area of the first hose is at least 2.7 times the cross-sectional area of the second hose.

An air conditioning apparatus according to one embodiment includes:
a first covering material that covers the first hose;
A second covering material that covers the second hose,
The thickness of the second coating material is smaller than the thickness of the first coating material.

According to the above embodiment, since the thickness of the second covering material is thinner than the thickness 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 the thickness 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.

In one embodiment of the air conditioning device, the thickness of the second covering material is 3.5 mm or less.

In one embodiment of the air conditioning device, the outer diameter of the second covering material is 28 mm or less.

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.

In the above embodiment, since the second hose is covered by the third covering material together with the refrigerant piping, the space occupied by the covering material in the piping hole can be made smaller than when the second hose is covered separately from the refrigerant piping. 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.

In one embodiment of the air conditioning device, the inner diameter of the second hose is 19 mm or less.

In one embodiment, the second hose has a cross-sectional area of 347 ^mm2 or less.

In one embodiment, the first hose has a cross-sectional area of 615 mm ² or more.

In one embodiment of the air conditioning device, the second hose is made of copper.

According to the above embodiment, the antibacterial effect of copper can suppress the growth of bacteria in the second hose.

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 a cross-sectional area of the first portion,
The first and second portions are connected via a different diameter socket.

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 placed 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.

In one embodiment of the air conditioning device, the first hose is located higher than the second hose at the outlet of the indoor unit.

Because 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, which makes it difficult to handle the first hose. In contrast, in the above embodiment, the first hose is located higher than the second hose at the outlet of the indoor unit, so that even if the first hose becomes large, it can be easily handled. More specifically, when bending the first hose and the second hose downward from the outlet of the piping hole, the first hose can be bent with a bending radius larger than the bending radius of the second hose, so that it is easy to handle the first hose.

1 is a schematic configuration diagram of an air conditioning apparatus according to a first embodiment of the present disclosure. 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 according to the first embodiment. 4 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. 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. FIG. 11 is a schematic configuration diagram of an air conditioning apparatus according to a third embodiment. FIG. 10 is a schematic configuration diagram of an air conditioning apparatus according to a fourth embodiment.

Below, an air conditioning device according to an embodiment of the present disclosure will be described with reference to the attached drawings.

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. For this reason, the definition of the "cross-sectional area" of a tubular member in this disclosure differs from the general definition of the cross-sectional area of a 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 tubular member.

In addition, in the following description, for the sake of convenience, terms indicating directions such as "up," "down," "front," and "rear" are used assuming normal use, but are not intended to limit the use state of the air conditioning device according to this disclosure.

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

Referring to FIG. 1, the air conditioning device 1 comprises an indoor unit 10 installed indoors and an outdoor unit 20 installed outdoors.

The indoor unit 10 is equipped with an indoor heat exchanger 11 and an indoor fan 12 that sends air to the indoor heat exchanger 11.

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.

During heating operation, the air conditioner 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 four-way switching valve 22 is switched to the dotted line switching position to start the compressor 21.

The indoor unit 10 is connected to the outdoor unit 20 via a liquid refrigerant pipe 30 and a gas refrigerant pipe 40.

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

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 the 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 the refrigerant piping according to the present disclosure.

The air conditioning device 1 of this embodiment includes an air supply hose 50 that draws air from the outside into the room. One end of the air supply hose 50 is connected to the indoor unit 10. The air supply hose 50 of this embodiment is an example of a first hose according to the present disclosure.

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

Figure 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, the liquid refrigerant piping 30, the gas refrigerant piping 40, the air supply hose 50, and the drain hose 70 described below are pulled out from the indoor unit 10.

Referring to FIG. 2, the indoor unit 10 has a substantially rectangular casing 13. The rear 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 installed against the wall by being hooked and fixed to a mounting plate 14 fixed to the wall.

The air conditioning device 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 of this embodiment is an example of a second hose according to the present disclosure.

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

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

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

The different diameter socket 80 is tubular. The different diameter socket 80 has 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.

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.

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 means that the axis of the air intake hose 50 is above the axis of the drain hose 70. Also, above is not limited to directly above, but also includes diagonally above.

Figure 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 the 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 through the outlet 10a (shown in Figure 2) of the indoor unit 10 described above, and pulled out to the outside through the piping hole H.

The liquid refrigerant pipe 30, gas refrigerant pipe 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, in FIG. 3, the liquid refrigerant pipe 30, gas refrigerant pipe 40, air supply hose 50, and drain hose 70 are illustrated in cross section perpendicular to their respective extension directions.

Referring to FIG. 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 part 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 part 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.

The air intake hose 50 of this embodiment is tubular and has a circular cross-sectional shape in the cross section shown in Fig. 3. In this embodiment, the outer diameter of the air intake hose 50 is 30.6 mm. The cross-sectional area of the air intake hose 50 is approximately 735 ^mm2 . Although shown diagrammatically in Fig. 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.

The outer circumference 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.

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 approximately 1110 ^mm2 . The inner diameter of the first insulating material 51 is 30.6 mm, which is the same as the outer diameter of the air supply hose 50.

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 approximately 346 ^mm2 . The inner diameter of the drain hose 70 is 19 mm. Although shown diagrammatically in Fig. 3, the drain hose 70 is bellows-shaped. 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.

The outer circumference 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.

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 approximately 506 ^mm2 . 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.

As described above, the cross-sectional area of the air supply hose 50 is about 735 mm ² , and 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.

In this embodiment, the liquid refrigerant pipe 30 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.

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

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 approximately 452 ^mm2 . In other words, the cross-sectional area of the portion surrounded by the outer periphery of the third insulating material 32 is approximately 452 ^mm2 .

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.

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

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 approximately 572 ^mm2 . In other words, the cross-sectional area of the portion surrounded by the outer periphery of the fourth insulating material 42 is approximately 572 ^mm2 .

The inner diameter of the sleeve S is 76 mm. The cross-sectional area of the space defined by the inner circumferential surface of the sleeve S is approximately 4,536 ^mm2 . In contrast, the cross-sectional area of the air supply hose 50 is approximately 735 ^mm2 , as described above. The air supply hose 50 occupies approximately 16% of the cross-sectional area of the space defined by the inner circumferential surface of the sleeve S.

In this embodiment, the cross-sectional area of the air supply hose 50 is approximately 2.12 times the cross-sectional area of the drain hose 70, but is not limited to this and may be 2.0 times or more the cross-sectional area of the drain hose 70. It is preferable that the cross-sectional area of the air supply hose 50 is 2.3 times or more the cross-sectional area of the drain hose 70. It is even more preferable that the cross-sectional area of the air supply hose 50 is 2.7 times or more the cross-sectional area of the drain hose 70.

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.

The cross-sectional area of the air supply hose 50 is about 735 mm ² , but is not limited to this. The cross-sectional area of the air supply hose 50 is preferably 615 mm ² or more and 866 mm ² or less. The outer diameter of the air supply hose 50 is preferably 28 mm or more and 33.2 mm or less.

The cross-sectional area of the drain hose 70 is about 346 mm ² , but is not limited to this. The cross-sectional area of the drain hose 70 is preferably 347 mm ² or less. In other words, the outer diameter of the drain hose 70 is preferably 21 mm or less.

The inner diameter of the drain hose 70 is 19 mm, but is not limited to this. It is preferable that the inner diameter of the drain hose 70 is 19 mm or less.

The dimensions of the first insulating material 51, the second insulating material 71, the liquid refrigerant piping 30, the third insulating material 32, the gas refrigerant piping 40, and the fourth insulating material 42 have been described above, but these dimensions can also be changed as appropriate.

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 insulating performance.

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. It is preferable that the thickness of the second insulating material 71 be 1.1 mm or more and 3.5 mm or less. It is even more preferable that the thickness of the second insulating material 71 be 1.1 mm or more and 2.2 mm or less.

In this embodiment, the outer diameter of the second insulating material 71 is 25.4 mm, but is not limited to this. It is preferable that the outer diameter of the second insulating material 71 is 28 mm or less.

The air conditioning device 1 according to this embodiment has the following functions:

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 increases 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.

According to this embodiment, since 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.

In this embodiment, the drain hose 70 is made of copper, so the antibacterial properties of copper can suppress the growth of bacteria within the drain hose 70.

According to this 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 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.

Because 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. For this reason, 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, making it 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 can be easily handled. More specifically, when the air supply hose 50 and the drain hose 70 are bent downward from the outlet 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.

[Second embodiment]
4 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 according to the second embodiment being inserted into a piping hole H. The air conditioning device 101 of the second embodiment differs from the air conditioning device 1 of the first embodiment in that the drain hose 70, together with the liquid refrigerant piping 30, is covered 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 numerals, and detailed descriptions thereof will be omitted by using Figures 1 and 2 of the first embodiment and the description thereof. In this embodiment, the air conditioning device 1 in Figures 1 and 2 of the first embodiment and the description thereof will be read as the air conditioning device 101.

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

The air conditioning device 101 according to the second embodiment has the same functions as the air conditioning device 1 according to the first embodiment.

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

In this embodiment, the drain hose 70 and the liquid refrigerant pipe 30 are covered together with the fifth insulating material 190, but this is not limited to the above. The drain hose 70 may be covered together with the gas refrigerant pipe 40 with the fifth insulating material 190. 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. Therefore, when the drain hose 70 and the liquid refrigerant pipe 30 are covered together with the fifth insulating material 190, the heat loss is smaller than when the drain hose 70 and the gas refrigerant pipe 40 are covered together with the fifth insulating material 190. As a result, covering the drain hose 70 and the liquid refrigerant pipe 30 together with the fifth insulating material 190 is preferable from the viewpoint of heat loss.

[Third embodiment]
5 is a schematic diagram of an air conditioning device 201 according to the third embodiment. The air conditioning device 1 of the third embodiment differs from the air conditioning device 1 of the first embodiment in that it includes 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, the same components as those in the first embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted by using FIGS. 2 and 3 and the description thereof of the first embodiment. In this embodiment, the intake hose 50 in FIGS. 2 and 3 and the description thereof of the first embodiment is replaced with the exhaust hose 250.

Referring to FIG. 5, the air conditioning device 201 of this embodiment includes an exhaust hose 250 that exhausts air from the inside of the room to the outside of the room. 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.

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.

The air conditioning device 201 according to the third embodiment has the same functions as the air conditioning device 1 according to the first embodiment.

[Fourth embodiment]
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 includes a humidifying hose 350 and a humidifying 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 the detailed description thereof is omitted by referring to FIGS. 2 and 3 and the description thereof of the first embodiment. In this embodiment, the air supply hose 50 in FIGS. 2 and 3 and the description thereof of the first embodiment is replaced with the humidifying hose 350.

Referring to FIG. 6, the air conditioning device 301 of this embodiment includes a humidification hose 350 that takes in air from the outdoors into the room. One end of the humidification hose 350 is connected to the indoor unit 10. The humidification hose 350 of this embodiment is an example of a first hose according to the present disclosure. The humidification hose 350 of this embodiment is covered with a first insulating material 51, similar to the air supply hose 50 of the first embodiment. The humidification hose 350 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.

In this embodiment, the humidifier 360 is provided in the outdoor unit 20. The humidifier 360 is connected to the indoor unit 10 via the 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.

The air conditioning device 301 according to the fourth embodiment has the same functions as the air conditioning device 1 according to the first embodiment.

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.

REFERENCE SIGNS LIST 1 Air conditioner 10 Indoor unit 10a Outlet 11 Indoor heat exchanger 12 Indoor fan 13 Casing 14 Mounting plate 20 Outdoor unit 21 Compressor 22 Four-way switching valve 23 Outdoor heat exchanger 24 Electric expansion valve 25 Accumulator 26 Outdoor fan 30 Liquid refrigerant piping (refrigerant piping)
31 Refrigerant pipe connection part 32 Third insulation material 40 Gas refrigerant pipe (refrigerant pipe)
41 Refrigerant piping connection part 50 Air supply hose (first hose)
51 First insulation material (first covering material)
60 Ventilation device 61 Intake fan 62 Intake port 70 Drain hose (second hose)
70a: First portion; 70b: Second portion; 71: Second insulating material (second covering material)
80 Different diameter socket 80a Large diameter portion 80b Small diameter portion 101 Air conditioning device 190 Fifth insulating material (third covering material)
201 Air conditioning device 250 Exhaust hose (first hose)
260 Exhaust device 261 Intake fan 262 Intake port 301 Air conditioner 350 Humidification hose (first hose)
360 Humidifier 361 Humidifier body 362 Air intake

Claims (9)

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) that covers the second hose (70),
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. The air conditioning device (1, 101, 201, 301) according to claim 1, wherein the cross-sectional area of the first hose (50, 250, 350) is 2.3 times or more the cross-sectional area of the second hose (70). The air conditioning device (1, 101, 201, 301) according to claim 1, wherein the cross-sectional area of the first hose (50, 250, 350) is 2.7 times or more the cross-sectional area of the second hose (70). The air conditioning device (1, 101, 201, 301) according to any one of claims 1 to 3, wherein the outer diameter of the second covering material (71) is 28 mm or less. The air conditioning device (1, 101, 201, 301) according to any one of claims 1 to 4, wherein the inner diameter of the second hose (70) is 19 mm or less. The air conditioner (1, 101, 201, 301) according to any one of claims 1 to 5, wherein the cross-sectional area of the second hose (70) is 347 ^mm2 or less. The air conditioner (1, 101, 201, 301) according to any one of claims 1 to 6, wherein the first hose (50, 250, 350) has a cross-sectional area of 615 ^mm2 or more. The air conditioner (1, 101, 201, 301) according to any one of claims 1 to 7, wherein the material of the second hose (70) is copper. 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