JP2023167933A - Duct structure and air conditioner including the same - Google Patents

Abstract

To provide a duct structure which is easy to attach and remove and can perform high-efficiency air-conditioning operation with low energy loss, and a mobile air conditioner including the same.SOLUTION: A duct structure has an exhaust duct 40 for use with a mobile air-conditioner 1. The duct 40 has and an inlet opening 41 which is detachably connected to the air conditioner 1 and into which air from the air conditioner 1 flows, and an outlet opening 42 for upwardly blowing out air entering from the inlet opening 41. The duct 40 is detachably fixed to a wall face 53 which surrounds a target space being air-conditioned. This enables high-efficiency air-conditioning operation with reduced mixing of cold air and hot air, without performing large-scale remodeling construction. Also, the duct 40 may be detachably fixed to the lower face 53 which is located below a ventilation fan 54. This allows air unnecessary for air-conditioning to be discharged to the outside of the target space by using the duct 40, which is easily attachable, and the existing ventilation fan 54.SELECTED DRAWING: Figure 2

Description

The present invention relates to a duct structure for an air conditioner and an air conditioner provided with the duct structure, and particularly relates to a duct structure for a movable air conditioner in which a user side unit and a heat source side unit are integrally provided.

BACKGROUND ART Conventionally, a mobile air conditioner that uses a refrigeration cycle is known, in which a user side unit and a heat source side unit are provided on a single movable frame.

For example, Patent Document 1 describes an indoor unit that includes an indoor heat exchanger and an indoor blower fan that sends air flowing through the indoor heat exchanger indoors, and an outdoor unit that is connected to the indoor heat exchanger so that refrigerant can circulate therein. An outdoor unit includes a heat exchanger, an outdoor fan that sends air flowing through the outdoor heat exchanger, and an outdoor unit that has movable wheels and has an inlet of an indoor heat exchanger and an inlet of an outdoor heat exchanger. An air conditioner is disclosed that includes a pedestal on which an indoor unit and an outdoor unit are placed so as to face each other.

This type of air conditioner is used in large spaces where it is difficult to install a regular air conditioner, such as factories, workshops, distribution warehouses, gymnasiums, etc., by blowing cold or warm air near workers, etc. It is used for spot air conditioning to efficiently cool or heat the air.

Further, for example, Patent Document 2 describes a wind conduit connection structure connected to this type of air conditioner, which includes an air supply duct that guides air cooled or heated by an air conditioner installed outdoors into a room. and a return air duct that guides indoor air to the air conditioner, and a wind conduit connection plate formed with an air supply port to which the supply air duct is connected and a return air port to which the return air duct is connected. However, a wind pipe connection structure is disclosed in which a wind pipe connection plate is removably placed in an opening connected to a room.

With such a configuration, air cooled or heated by the air conditioner installed outdoors can be efficiently circulated indoors through the air supply duct and the return air duct. Therefore, even if it is a transport type air conditioner where the user side unit and heat source side unit are placed together outdoors, it is different from a general air conditioner where the indoor unit is installed indoors and the outdoor unit is installed outdoors. Highly efficient circulating cooling or circulating heating can be performed.

Japanese Patent Application Publication No. 2021-11984 Japanese Patent Application Publication No. 2021-173444

However, in the mobile air conditioner of the prior art described above, there are points that need to be improved in order to facilitate installation in an existing space to be air-conditioned and to further improve cooling or heating efficiency.

Specifically, the air conditioner disclosed in Patent Document 1 has excellent performance in powerfully blowing cold air toward users etc. from an indoor unit as a user-side unit during cooling operation in a large space such as a factory. has. However, from the outdoor unit as a heat source side unit provided integrally with the indoor unit, warm air heated by a refrigerant in an outdoor heat exchanger serving as a condenser is blown indoors.

Therefore, in order to perform cooling operation efficiently, it is necessary to use a method that sends the warm air blown out from the outdoor unit to the outside, etc., away from the object to be cooled. However, it is not easy to send the exhaust air from the air conditioner to the outside of the space to be air-conditioned.

Specifically, a building or the like constituting the air-conditioned space may not be provided with an exhaust port, an air-conditioning duct, or the like for discharging the exhaust gas from the air conditioner to the outside. In order to exhaust the exhaust air from a mobile air conditioner to the outside in an air conditioned space that does not have air conditioning ducts, etc., install new exhaust ports, exhaust ducts, and fans in the buildings that make up the air conditioned space. etc., it is necessary to provide.

However, it is not easy to renovate existing buildings to install new air conditioning ducts, etc. Furthermore, for example, if a rented distribution warehouse or the like is an air-conditioned space, modifications or changes to walls, frames, etc. may not be permitted. Therefore, there has been a need for a configuration that enables highly efficient air conditioning operation without deforming existing walls or the like.

In addition, by adopting the wind conduit connection structure disclosed in Patent Document 2, even if the user side unit and the heat source side unit are integrally provided in an air conditioner, the indoor unit is installed outdoors. It allows efficient air conditioning operation like a standard air conditioner.

In other words, the air that has been cooled or heated by the indoor heat exchanger of the indoor unit is sent through the supply air duct and the return air duct to the air conditioner without introducing the air that has exchanged heat with the refrigerant in the outdoor heat exchanger of the outdoor unit into the room. It can be circulated throughout the space for efficient air conditioning operation.

However, such a wind pipe connection structure requires members such as a supply air duct, a return air duct, and a wind pipe connection plate, and also requires assembly work for these members. Further, it is also necessary to attach and remove the wind pipe connecting plate and the like to the opening of the air-conditioned space. Therefore, there has been a need for a configuration that has fewer parts and can facilitate operations such as movement and installation.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a system that is easy to install and remove, and that efficiently uses waste heat air generated during cooling or heating operations in mobile air conditioners. An object of the present invention is to provide a duct structure that enables high-efficiency air conditioning operation with little energy loss, and an air conditioner equipped with the duct structure.

The duct structure of the present invention includes an exhaust duct used in a mobile air conditioner, and the duct is detachably connected to the air conditioner and air from the air conditioner flows into the duct. An inlet opening and an outlet opening that blows out air that has flowed in from the inlet opening are formed, the outlet opening is formed on the upper surface of the duct, and the duct is detachably attached to a wall surrounding the air-conditioned space. It is characterized by being fixed.
Furthermore, an air conditioner according to the present invention is characterized in that it includes the duct structure.

The duct structure of the present invention includes an exhaust duct used in a mobile air conditioner, and the duct is detachably connected to the air conditioner and air from the air conditioner flows into the duct. An inlet opening and an outlet opening that blows out air that has flowed in from the inlet opening are formed, the outlet opening is formed on the upper surface of the duct, and the duct is detachably attached to a wall surrounding the air-conditioned space. Fixed. With this configuration, the removable duct can be fixed to the existing wall without the need for large-scale renovation work, and the air blown out from the air conditioner that is not needed for air conditioning can be moved away from the air conditioning target. It can be sent upwards into space. Therefore, highly efficient air conditioning operation is possible in which mixing of cold air and hot air blown out from the air conditioner is suppressed.

Further, according to the duct structure of the present invention, the duct may be detachably fixed to the wall surface below the ventilation fan of a wall provided with a ventilation fan that discharges air from the air-conditioned space to the outside. . This allows the use of easily installed ducts and existing ventilation fans to reduce the amount of air blown out from the air conditioner, without requiring any renovation work to create new exhaust ports on the walls of buildings that make up the air-conditioned space. Air that is not needed for air conditioning can be discharged to the outside of the air-conditioned space.

Specifically, when a mobile air conditioner installed inside a space to be air-conditioned is used for cooling operation, the high-temperature air containing the waste heat from the condensing refrigerant is mostly stored near the space to be air-conditioned. It is discharged to the outside of the air-conditioned space via the exhaust duct and ventilation fan without being returned to the air. Therefore, highly efficient cooling operation can be performed.

Furthermore, when an air conditioner in an air-conditioned space is used for heating operation, much of the low-temperature air that has lost its heat to the evaporating refrigerant is not returned to the vicinity of the air-conditioned space, and is routed through exhaust ducts and It is exhausted to the outside of the air-conditioned space via the ventilation fan. Therefore, highly efficient heating operation can be performed.

Further, according to the duct structure of the present invention, the inlet opening may be formed at a lower front surface of the duct, and the back surface of the duct may be detachably fixed to the wall surface. Thereby, the back surface of the duct can be fixed to the wall surface forming the air-conditioned space, and the outlet for blowing out air unnecessary for the air conditioning operation of the air conditioner can be connected to the lower front surface of the duct. Therefore, only the air necessary for cooling and heating can be efficiently blown toward the air conditioning target.

Further, according to the duct structure of the present invention, the duct may be formed in a parallelogram shape or a trapezoid shape when viewed from the side. This provides a suitable air path with low air resistance that allows air to flow efficiently from the inlet opening toward the outlet opening. Therefore, highly efficient air conditioning operation can be performed.

Moreover, according to the duct structure of the present invention, the duct may be fixed to the wall surface with a hook-and-loop fastener or a magnet. Thereby, the duct can be easily attached and removed, and the duct can be firmly supported by the existing wall surface.

Further, according to the duct structure of the present invention, the air conditioner includes a user-side unit provided with a user-side heat exchanger and a user-side blower fan, and a heat source-side heat exchanger and a heat source-side blower fan. The heat source side unit may include a pedestal on which the use side unit and the heat source side unit are placed, and the inlet opening may be connected to an air outlet of the heat source side unit. With such a configuration, it is possible to efficiently move and install the air conditioner and to attach and detach the duct. The air conditioner installed inside the air-conditioned space uses the high-temperature exhaust air radiated from the heat source side heat exchanger or the low-temperature exhaust air that has absorbed heat to be air-conditioned through ducts, ventilation fans, etc. It can be discharged outside the target space. Therefore, highly efficient air conditioning operation with less energy loss can be performed.

Further, according to the duct structure of the present invention, the inner peripheral surface of the inlet opening of the duct may be connected to the outer peripheral surface of a duct support provided around the air outlet by a hook-and-loop fastener or a magnet. . Thereby, the work of attaching and removing the duct to the air conditioner can be easily performed, and the duct can be firmly supported so that it will not be peeled off by wind pressure.

Further, according to the duct structure of the present invention, the duct may be formed from a synthetic resin sheet material or a woven or nonwoven fabric made of synthetic fibers. This makes it possible to obtain a high-performance duct that is easy to install and remove, transport, and store.

Moreover, the air conditioner of the present invention is characterized in that the above-mentioned duct structure is provided. Thereby, the exhaust gas blown out from the air conditioner can be efficiently discharged to the outside of the air-conditioned space, and highly efficient air-conditioning operation can be performed.

1 is a side view showing a schematic configuration of an air conditioner according to an embodiment of the present invention. 1 is a side view showing an installed state of an air conditioner according to an embodiment of the present invention. 1 is a side view showing a schematic configuration of a main body of an air conditioner according to an embodiment of the present invention. 1 is a perspective view showing a schematic configuration of a duct of an air conditioner according to an embodiment of the present invention.

Hereinafter, an air conditioner 1 having a duct structure according to an embodiment of the present invention will be described in detail based on the drawings.
FIG. 1 is a side view showing a schematic configuration of an air conditioner 1 according to an embodiment of the present invention. As shown in FIG. 1, the air conditioner 1 is a movable powerful spot air conditioner in which a user unit 10 and a heat source unit 20 are integrally provided on a pedestal 30, and are connected to the heat source unit 20. A duct 40 is provided.

The air conditioner 1 is a device that can cool or heat large spaces where it is difficult to install an air conditioner such as a regular package air conditioner, and is used for air conditioning in distribution warehouses, factories, workshops, gymnasiums, etc. Ru.

FIG. 2 is a side view showing the installed state of the air conditioner 1. As shown in FIG. 2, the air conditioner 1 is movably placed on a floor surface 59 in a room 50 such as a distribution warehouse, which is an air-conditioned space, for example. Specifically, the main body 2 of the air conditioner 1 can be easily moved on the floor surface 59 by the user's operation. The main body 2 is installed in front of the wall 52 so that the air outlet 26 of the heat source side unit 20 faces the outdoor 51 side, that is, the air outlet 26 faces the wall 52 side.

The air conditioner 1 is connected to a wall surface 53 of a building etc. via a detachable duct 40. Specifically, the air conditioner 1 is provided on a wall 52 on which a ventilation fan 54 is provided, and is detachably fixed to a wall surface 53 below the ventilation fan 54.

The ventilation fan 54 is provided in an opening formed in the wall 52 and discharges air from the space to be air-conditioned to the outside 51. The form of the ventilation fan 54 is not particularly limited. For example, the ventilation fan 54 may be configured to connect to the outside 51 via an exhaust duct (not shown) or the like and discharge air to the outside 51. Further, the ventilation fan 54 may be a ventilation opening or the like without a blower fan or the like as long as it is configured to discharge the air in the air-conditioned space to the outside 51.

The duct 40 is an exhaust duct that discharges air blown out from the heat source side unit 20 and unnecessary for cooling or heating to the upper part of the air-conditioned space. Specifically, the duct 40 is an exhaust duct that discharges air blown out from the heat source side unit 20 and unnecessary for heating and cooling into the vicinity of the ventilation fan 54. Air unnecessary for air conditioning and heating that has flowed through the duct 40 is discharged to the outdoors 51 via the ventilation fan 54.

The duct 40 has a substantially rectangular prism shape, the lower part of the front surface 43 is removably connected to the main body 2 of the air conditioner 1, and the back surface 44 is removably connected to a wall surface 53 of a distribution warehouse or the like that is the space to be air-conditioned. Connected. The upper surface 47 of the duct 40 is formed with an outlet opening 42 through which air is discharged. Air blown out from the air outlet 26 of the heat source side unit 20 passes through the duct 40, is blown out from the outlet opening 42 to the upper part of the air-conditioned space, is sucked into the ventilation fan 54, and is discharged to the outside 51.

FIG. 3 is a side view showing a schematic configuration of the main body 2 of the air conditioner 1. Referring to FIG. 3, the user unit 10 is a device that cools or heats and supplies air on the user side. The user unit 10 has a configuration corresponding to an indoor unit of a general package air conditioner.

Specifically, the user-side unit 10 has a housing 11 as a user-side housing that is a substantially box-shaped case formed from a metal plate material, etc., and is a component that constitutes a refrigeration cycle inside the housing 11. A user-side heat exchanger 12 and a user-side blower fan 13 are provided.

The heat source side unit 20 is a device that radiates or absorbs heat from the air on the exhaust side. The heat source side unit 20 has a configuration corresponding to an outdoor unit of a general package air conditioner.

Specifically, the heat source side unit 20 has a housing 21 as a user side housing, which is a substantially box-shaped case formed from a metal plate material, etc., and is a component that configures a refrigeration cycle inside the housing 21. A heat source side heat exchanger 22 and a heat source side blower fan 23 are provided.

The user side heat exchanger 12 of the user side unit 10 is connected to the heat source side heat exchanger 22 of the heat source side unit 20 via a refrigerant pipe 28. Specifically, the user-side heat exchanger 12 and the heat source-side heat exchanger 22 include a compressor (not shown) that compresses low-pressure refrigerant to make it high-pressure, an expansion valve (not shown) that expands high-pressure refrigerant to make it low-pressure, and refrigerant piping. 28 and other refrigerant pipes (not shown), forming a vapor compression type refrigeration cycle circuit. The refrigerant used in the refrigeration cycle is, for example, HFC refrigerant.

The user unit 10 is formed with an inlet 15 for sucking air and an outlet 16 for blowing out air. A user-side heat exchanger 12 is provided inside the suction port 15 for exchanging heat between air sucked in from the outside of the housing 11 and a refrigerant. As a result, for example, during cooling operation, the user-side heat exchanger 12 serves as an evaporator, and the air sucked in from the outside of the housing 11 is cooled by the refrigerant that evaporates within the user-side heat exchanger 12.

A user-side blower fan 13 is provided inside the air outlet 16 to blow out the air inside the housing 11 that has exchanged heat with the user-side heat exchanger 12 to the outside. The user-side ventilation fan 13 is, for example, a propeller fan or the like, and is rotationally driven by a motor (not shown).

The air conditioner 1 according to the present embodiment is equipped with a particularly powerful user-side ventilation fan 13. Specifically, the user-side blower fan 13 has a strong blowing ability that blows air out from the outlet 16 at a wind speed of 8 m/s. As a result, strong straight wind can be delivered far from the air outlet 16 in the indoor room 50 (see FIG. 2), and the large indoor room 50 can be efficiently cooled or heated.

The air outlet 16 is provided with a wind direction guide 14 for adjusting the flow direction of the air sent by the usage side fan 13. The wind direction guide 14 has an outer periphery that surrounds the outer periphery of the user-side blower fan 13 and has, for example, a substantially cylindrical shape. The inside surrounded by the outer periphery of the wind direction guide 14 is an opening connected to the air outlet 16, and a variable wind direction adjusting plate (not shown) may be provided therein to adjust the flow of air.

The heat source side unit 20 is formed with an inlet 25 for sucking air and an outlet 26 for blowing out air. A heat source side heat exchanger 22 is provided inside the suction port 25 to exchange heat between air sucked in from the outside and a refrigerant. Thereby, for example, during cooling operation, the refrigerant in the heat source side heat exchanger 22 is cooled by the air flowing in from the suction port 25. In other words, the air sucked in from the suction port 25 exchanges heat with the refrigerant in the heat source side heat exchanger 22 and is heated.

A heat source side blower fan 23 is provided inside the air outlet 26 to blow out the air inside the housing 21 that has exchanged heat with the heat source side heat exchanger 22 to the outside. The heat source side blower fan 23 is, for example, a propeller fan or the like, and is rotationally driven by a motor (not shown). For example, two heat source side blower fans 23 are provided, one above the other.

Further, the air outlet 26 may be provided with a wind direction guide 24 for adjusting the blowing direction of the air sent by the heat source side blower fan 23. The wind direction guide 24 has, for example, a substantially rectangular outer frame that surrounds the outer periphery of the heat source side blower fan 23, and is made of a metal plate material, a resin plate material, or the like. For example, a pair of wind direction guides 24 are provided, one above the other, corresponding to the two heat source side blower fans 23 provided above and below.

A hook-and-loop fastener 27 is provided on the outer periphery of the wind direction guide 24 as a duct support portion for connecting the duct 40 (see FIG. 2). The hook-and-loop fastener 27 has, for example, a male surface, and is detachably joined to a hook-and-loop fastener 48 (see FIG. 4) provided on the inner peripheral surface of the inlet opening 41 of the duct 40.

The pedestal 30 is a pedestal that integrally supports the user unit 10 and the heat source unit 20. The frame 30 is made of, for example, angle steel, channel steel, other steel materials, or the like. A base 31 is formed at the bottom of the pedestal 30. The base 31 has an outer periphery shaped like a substantially rectangular frame when viewed from above. The heat source side unit 20 is fixed to the upper part of the base 31.

A user-side unit installation stand 32 on which the user-side unit 10 is installed is formed on the pedestal 30 . The user-side unit installation stand 32 is formed to protrude upward from the top of the base 31 so that the bottom of the user-side unit 10 can be supported at a higher position than the bottom of the heat source-side unit 20.

By providing the usage side unit installation stand 32 on the upper part of the base 31, the usage side unit 10 is fixed at a higher position than the heat source side unit 20. As a result, the position of the air outlet 16 of the user-side unit 10 is raised, and air can be blown widely and efficiently into a work space that requires cold air or warm air for air conditioning.

Further, the user unit 10 is provided on the upper part of the user unit installation stand 32, and the upper surface of the user unit 10 and the upper surface of the heat source unit 20 are approximately at the same height. The upper part of the usage side unit 10 and the upper part of the heat source side unit 20 are connected and fixed by a connecting member 33. The connecting member 33 supports the upper part of the user side unit 10 and the upper part of the heat source side unit 20, and suppresses deformation of the air conditioner 1 due to vibrations during transportation or use.

A drain pan (not shown) may be provided below the user side unit 10 and the heat source side unit 20. The drain pan is a member that receives moisture that adheres to and drips on the user-side heat exchanger 12 of the user-side unit 10 or the heat-source-side heat exchanger 22 of the heat source-side unit 20 and drains it to a water pipe (not shown). By providing a drain pan, moisture dripping from the user-side heat exchanger 12 or the heat source-side heat exchanger 22 can be collected and properly drained, and it is possible to prevent moisture from scattering into the work space etc. .

Wheels 34 are provided near the lower corners of the base 31 . The wheels 34 are, for example, casters having rubber wheels or the like, and one end side may be a fixed wheel movable in one predetermined direction, and the other end side may be a flexible wheel whose direction can be changed. By providing the wheels 34, the pedestal 30 is configured to be movable while integrally supporting the user unit 10 and the heat source unit 20.

The user side unit 10 and the heat source side unit 20 are provided on a pedestal 30 so that the suction ports 15 and 25 for sucking air are opposed to each other. That is, the usage side unit 10 and the heat source side unit 20 are arranged so that the usage side heat exchanger 12 side and the heat source side heat exchanger 22 side face each other.

In other words, the user side unit 10 and the heat source side unit 20 are placed back to back so that the air outlet 16 of the user side unit 10 and the air outlet 26 of the heat source side unit 20 face in opposite directions so that each blows out air in opposite directions. It is located in

As described above, the user side unit 10 and the heat source side unit 20 are arranged back to back with the suction port 15 and the suction port 25 facing each other so that the air outlet 16 and the air outlet 26 blow out air in opposite directions. This enables efficient air conditioning for distribution warehouses, large-scale factories, gymnasiums, etc.

That is, the cooled or heated air can be efficiently and powerfully blown out from the air outlet 16 of the user-side unit 10 into the room 50 to be air-conditioned. Then, air unnecessary for air-conditioning operation is pumped out from the air outlet 26 of the heat source side unit 20 facing opposite to the air outlet 16 of the user side unit 10 through the duct 40 and the ventilation fan 54 (see FIG. 2) to the outdoor air 51. (See Figure 2).

FIG. 4 is a perspective view showing a schematic configuration of the duct 40 of the air conditioner 1. Referring to FIGS. 2 and 4, the duct 40 has a substantially rectangular prism shape, with an inlet opening 41 formed at the lower part of the front surface 43, and an outlet opening 42 formed over substantially the entire upper surface 47.

The inlet opening 41 is an opening into which air from the heat source side unit 20 of the air conditioner 1 flows. The air outlet 26 of the heat source side unit 20 is detachably connected to the inlet opening 41 . The outlet opening 42 is an opening through which the air that has flowed into the duct 40 from the inlet opening 41 is blown out.

The duct 40 is formed from a synthetic resin sheet material or a woven or nonwoven fabric made of synthetic fibers. This provides a high-performance duct 40 that is easy to install and remove, transport, and store.

Additionally, the duct 40 may be formed from a slightly breathable material. Thereby, for example, when cold air is flowed through the duct 40 during heating operation, dew condensation on the surface of the duct 40 can be prevented.

Referring to FIGS. 3 and 4, a hook-and-loop fastener 48 is provided near the inner peripheral surface of the inlet opening 41 as a support member for connecting the duct 40 to the air conditioner 1. The hook-and-loop fastener 48 has, for example, a female surface on its inner peripheral surface, and is removably joined to the outer circumferential surface of the hook-and-loop fastener 27 provided on the heat source side unit 20 .

With such a configuration, it is possible to easily and efficiently attach and detach the duct 40 to the main body 2 of the air conditioner 1. Further, the main body 2 of the air conditioner 1 and the duct 40 are firmly fixed so as not to come apart due to the pressure of the air sent from the heat source side blower fan 23.

Referring to FIGS. 2 and 4, a hook-and-loop fastener 49 is provided near the back surface 44 of the duct 40 as a support member for fixing the duct 40 to a wall surface 53 surrounding the room 50. Specifically, a pair of left and right hook-and-loop fasteners 49 are provided near both left and right sides of the back surface 44 so as to extend substantially in the vertical direction along the sides of the back surface 44 . A hook-and-loop fastener 55 is provided on the wall surface 53 as a duct support portion.

The hook-and-loop fastener 49 provided on the duct 40 has, for example, a female surface on its outer circumferential surface, and the hook-and-loop fastener 55 provided on the wall surface 53 has, for example, a male surface on its inner circumferential surface. Such a configuration makes it easy to attach and detach the duct 40 to the wall surface 53. Further, the duct 40 and the wall surface 53 can be firmly connected so that the duct 40 does not separate from the wall surface 53.

In this way, the air conditioner 1 can fix the back surface 44 of the duct 40 to the wall surface 53 forming the air-conditioned space, and the air outlet 26 is provided at the lower part of the front surface 43 of the duct 40 to blow out air unnecessary for air conditioning operation. Can be connected. Therefore, the air conditioner 1 sends the air unnecessary for heating and cooling blown out from the air outlet 26 of the heat source side unit 20 to the upper part of the room 50, and sends the air necessary for air conditioning and heating blown out from the air outlet 16 of the user side unit 10 to the upper part of the room 50. can be efficiently sprayed towards the air conditioning target.

Referring to FIGS. 2 to 4, in the air conditioner 1 disposed in a room 50, exhaust side air that has become high temperature due to heat radiation from the heat source side heat exchanger 22 or exhaust side air that has become low temperature due to heat absorption. is sent to the vicinity of the ventilation fan 54 via the duct 40. The exhaust side air blown out from the duct 40 is discharged to the outside 51 via the ventilation fan 54. Therefore, the air conditioner 1 can perform highly efficient air conditioning operation with little energy loss.

Note that for the connection of the duct 40, instead of the connection using the hook-and-loop fasteners 27, 48, 49, and 55 described above, a connection method using magnetic force may be adopted. Specifically, the inner peripheral surface of the inlet opening 41 of the duct 40 is provided with a support member containing neodymium or other magnets instead of the hook-and-loop fastener 48, and the outer peripheral surface of the wind direction guide 24 of the heat source side unit 20 is provided with a support member containing neodymium or other magnets. , instead of the hook-and-loop fastener 27, a magnetic material may be provided.

Further, in place of the hook-and-loop fastener 49, a support member containing a magnet such as neodymium is provided on the back surface 44 of the duct 40, for example, near both left and right sides, and on the wall surface 53, instead of the hook-and-loop fastener 55, a magnetic material is provided. It may be provided. Further, the object to which the magnet and the magnetic body are attached may be the opposite of the above. Even with such a configuration, the duct 40 and the wall surface 53 are strongly fixed so that they do not come apart, and the work of connecting the duct 40 and the wall surface 53 is easy.

As shown in FIG. 2, the duct 40 is formed into a substantially parallelogram shape when viewed from the side. That is, both the left and right side surfaces 45 of the duct 40 each have a substantially parallelogram shape, and the bottom surface 46 and the top surface 47 each have a substantially rectangular shape and slope upward toward the rear surface 44 side. Here, the inclination angle θ of the bottom surface 46 is approximately 20 to 70 degrees, preferably 30 to 60 degrees, and more preferably 40 to 50 degrees.

Since the bottom surface 46 is inclined at a suitable angle of inclination θ such that it rises toward the rear surface 44 side, that is, toward the wall surface 53 side, air resistance is small from the inlet opening 41 to the outlet opening 42, and the duct 40 Improves air flow inside. That is, the air blown out from the air outlet 26 toward the wall surface 53 is suitably guided by the bottom surface 46, changes the flow direction, and ascends inside the duct 40. Therefore, efficient exhaust is possible.

Further, the upper surface 47 of the duct 40 is also inclined substantially parallel to the bottom surface 46 so that the rear surface 44 side, that is, the wall surface 53 side is higher. The outlet opening 42 is formed to be inclined at an angle substantially equal to the inclination angle θ so that the side toward the indoor 50 is lower and the side toward the wall surface 53 is higher.

With the outlet opening 42 having such a configuration, the air in the room 50 and the air blown out from the outlet opening 42 of the duct 40 are suitably combined, sucked by the ventilation fan 54, and discharged to the outside 51. I can do it. Therefore, highly efficient air conditioning by the air conditioner 1 provided with the duct 40 is possible.

Note that the duct 40 may be formed into a substantially trapezoidal shape when viewed from the side. That is, the side surface 45 of the duct 40 has a substantially trapezoidal shape, and the bottom surface 46 and the top surface 47 are each formed at a suitable inclination angle. Thereby, the flow of air that flows into the duct 40 from the inlet opening 41 and is sucked into the ventilation fan 54 via the outlet opening 42, and the flow of air that is sucked directly into the ventilation fan 54 from the upper part of the room 50 are optimized. It is possible to perform highly efficient air conditioning operation.

As described above, the duct structure of the mobile air conditioner 1 according to the present embodiment includes the exhaust duct 40 that is detachably connected. Specifically, the duct 40 includes an inlet opening 41 that is detachably connected to the main body 2 of the air conditioner 1 and into which air from the heat source side unit 20 flows, and an outlet that blows the air that has flowed in from the inlet opening 41 upward. An opening 42 is formed. The duct 40 is detachably fixed to a wall surface 53 surrounding an indoor room 50 that is an air-conditioned space.

With such a configuration, the duct 40, which can be easily attached and detached, can be fixed to the existing wall surface 53 without performing large-scale renovation work, and high efficiency of air conditioning operation can be achieved. Specifically, air unnecessary for air conditioning blown out from the heat source side unit 20 of the air conditioner 1 can be sent upward into the room 50 away from the air conditioning target. Therefore, highly efficient air conditioning operation is possible in which mixing of cold air and hot air blown out from the air conditioner 1 is suppressed.

Further, the duct 40 may be detachably fixed to a wall surface 53 below the ventilation fan 54 of a wall 52 on which a ventilation fan 54 for discharging air from the room 50 to the outside 51 is provided. As a result, the air conditioner can be installed by using the easily installed duct 40 and the existing ventilation fan 54 without having to perform renovation work to form new exhaust ports, etc. on the wall 52 of the building that constitutes the air-conditioned space. Air unnecessary for air conditioning blown out from 1 can be efficiently discharged to the outside 51.

Specifically, when the mobile air conditioner 1 installed in the room 50 is used for cooling operation, most of the high temperature air containing exhaust heat from the condensing refrigerant is returned to the vicinity of the air conditioner. The air is discharged to the outside 51 via the duct 40 and the ventilation fan 54 without being leaked. Therefore, the air conditioner 1 can perform highly efficient cooling operation.

In addition, when the air conditioner 1 in the room 50 is used for heating operation, most of the low-temperature air that has lost its heat to the evaporating refrigerant is not returned to the vicinity of the air conditioning target, and is routed through the duct 40 and ventilation fan. It is discharged to the outside 51 via 54. Therefore, the air conditioner 1 can perform highly efficient heating operation.

Note that the present invention is not limited to the above embodiments. The present invention can be modified in various ways without departing from the spirit thereof.

1 Air conditioner 2 Main body 10 Usage side unit 11 Housing 12 Usage side heat exchanger 13 Usage side ventilation fan 14 Wind direction guide 15 Suction port 16 Air outlet 20 Heat source side unit 21 Housing 22 Heat source side heat exchanger 23 Heat source side ventilation fan 24 Wind direction guide 25 Suction port 26 Outlet port 27 Hook and loop fastener 28 Refrigerant piping 30 Frame 31 Base 32 User side unit installation stand 33 Connecting member 34 Wheels 40 Duct 41 Inlet opening 42 Outlet opening 43 Front 44 Back 45 Side 46 Bottom 47 Top 48 Hook and loop fastener 49 Hook and loop fastener 50 Indoor 51 Outdoor 52 Wall 53 Wall surface 54 Ventilation fan 55 Hook and loop fastener 59 Floor surface θ Inclination angle

Claims (9)

It has an exhaust duct used for mobile air conditioning equipment,
The duct is formed with an inlet opening that is detachably connected to the air conditioner and into which air from the air conditioner flows, and an outlet opening that blows out the air that has flowed in from the inlet opening.
the outlet opening is formed on the top surface of the duct;
The duct structure is characterized in that the duct is removably fixed to a wall surrounding an air-conditioned space. The duct structure according to claim 1, wherein the duct is detachably fixed to the wall surface below the ventilation fan of a wall provided with a ventilation fan that discharges air from the air-conditioned space to the outside. . the inlet opening is formed at a lower front surface of the duct;
The duct structure according to claim 2, wherein the duct has a back surface removably fixed to the wall surface. The duct structure according to claim 3, wherein the duct is formed in a parallelogram shape or a trapezoid shape when viewed from the side. The duct structure according to claim 1, wherein the duct is fixed to the wall surface with a hook-and-loop fastener or a magnet. The air conditioner includes a user-side unit provided with a user-side heat exchanger and a user-side blower fan, a heat source-side unit provided with a heat source-side heat exchanger and a heat source-side blower fan, and the user-side unit and the user-side blower fan. A pedestal on which a heat source side unit is placed,
The duct structure according to claim 1, wherein the inlet opening is connected to an air outlet of the heat source side unit. The duct structure according to claim 6, wherein the inner circumferential surface of the inlet opening of the duct is connected to the outer circumferential surface of a duct support provided around the air outlet by a hook-and-loop fastener or a magnet. . The duct structure according to claim 1, wherein the duct is formed from a synthetic resin sheet material or a woven or nonwoven fabric made of synthetic fibers. An air conditioner comprising the duct structure according to any one of claims 1 to 8.

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