Air conditioner

Abstract

Provided is an air conditioner which is easy to move and install, can efficiently blow cold air or the like into a space to be air-conditioned, and does not interfere with operations or the like. A movable air conditioner provided with a use-side heat exchanger (12) and a heat-source-side heat exchanger (22), in which a duct (35) for guiding air to a space to be air-conditioned is connected to a discharge port (16) of a casing (11) for discharging air cooled or heated by the use-side heat exchanger (12), the duct (35) being provided with: a first curved tube section (36) for changing the orientation of the duct (35), and a second curved tube section (36) for changing the orientation of the duct (35); air is made to flow above the blow-out opening (16); a second curved pipe section (38) that changes the orientation of the duct so as to blow air into the space to be air-conditioned; and a contracted pipe section (37) that reduces the flow path area of the duct (35). As a result, the air-conditioning device is easy to move and install, and it is possible to forcibly blow cold air or the like from the duct blow-out opening (39) located at a high position and send the same to a space to be air-conditioned without hindering work or the like.

Description

Technical Field

[0001] The present invention relates to a movable air conditioner in which a utilization side unit and a heat source side unit are integrally provided. Background Art

[0002] Conventionally, as an air conditioner using a refrigeration cycle, a mobile air conditioner in which a utilization side unit and a heat source side unit are installed on a single movable stand is known. For example, Patent Document 1 discloses an air conditioner comprising: an indoor unit having an indoor heat exchanger and an indoor supply fan, wherein the indoor supply fan supplies air flowing through the indoor heat exchanger to the indoor room; an outdoor unit having an outdoor heat exchanger and an outdoor supply fan, wherein the outdoor heat exchanger is connected to the indoor heat exchanger in a manner such that a refrigerant can circulate, and wherein the outdoor supply fan supplies air flowing through the outdoor heat exchanger; and a frame having wheels and being movable, carrying the indoor unit and the outdoor unit so that the suction port of the indoor heat exchanger is opposite to the suction port of the outdoor heat exchanger.

[0003] This type of air conditioner is used for fixed-point air conditioning in large spaces such as factories, workplaces, warehouses, and gymnasiums where it is difficult to install conventional combined air conditioners. The fixed-point air conditioner blows cold air or warm air near workers, thereby efficiently cooling or heating the work space.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2021-11984

[0005] However, in order to perform efficient cooling or heating in a workspace or the like as an air-conditioned space without interfering with the work of a user, the above-mentioned conventional mobile air conditioner has room for improvement.

[0006] Specifically, the air conditioner disclosed in Patent Document 1 has the following excellent air conditioning performance: in cooling operation in a large space such as a factory, cold air can be blown strongly from an indoor unit as a utilization side unit to a user, etc. However, there are cases where it is difficult to properly supply cold air or warm air from the air conditioner to a worker, etc. who needs air conditioning, depending on the air conditioning target space.

[0007] For example, when removing or loading cargo from a container for transporting cargo, the temperature inside the container becomes high, which causes a poor working environment. Specifically, the temperature inside the container during operation may exceed 50°C.

[0008] In order to improve such a working environment, it is conceivable to use an air conditioner to perform fixed-point cooling on the inside of the container. However, the air conditioner of the prior art is not easy to fully blow cold air to the deep inside of the container for cargo transportation and perform appropriate refrigeration.

[0009] Specifically, since it hinders the loading and unloading operation of goods, the air conditioner cannot be carried inside the container. In addition, even if the air conditioner is placed inside the container, it will not hinder the loading and unloading operation, and it is not easy to place the air conditioner inside the container.

[0010] Therefore, an air conditioner is placed outside the container and performs cooling or other operations, but it is sometimes difficult to blow cold or warm air from the air conditioner into the container, and the area around workers who need air conditioning cannot be sufficiently cooled or heated.

[0011] Furthermore, for example, it is conceivable to connect a flexible duct or the like to the air outlet of the air conditioner, insert the flexible duct or the like into the interior of the container, and supply cold or warm air for air conditioning into the interior of the container via the flexible duct or the like.

[0012] However, it is not easy to insert the flexible ducts for refrigeration into the container and fix them in a manner that can withstand strong airflow, or to remove the flexible ducts from the container, which reduces the efficiency of loading and unloading operations.

[0013] Furthermore, since the flexible ducts and the like inserted into the interior of the container interfere with the loading and unloading operations, the insertion of the flexible ducts and the like into the interior of the container is often not permitted. Summary of the invention

[0014] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner that is easy to move and install, can efficiently blow cool air to an air-conditioned space, and does not interfere with operations.

[0015] The air conditioner of the present invention is a movable air conditioner having a utilization-side heat exchanger and a heat source-side heat exchanger, wherein a pipe that guides the air to an air conditioning target space is connected to a blow-out port of a shell that sends out air cooled or heated by the utilization-side heat exchanger, and the pipe comprises: a first curved pipe portion that changes the direction of the pipe so that the air flows upwards than the blow-out port; a second curved pipe portion that changes the direction of the pipe so that the air is blown out to the air conditioning target space; and a contraction portion that reduces the flow area of ​​the pipe.

[0016] In addition, the air conditioner of the present invention comprises: a utilization side unit, in which a utilization side heat exchanger and a utilization side supply fan are arranged in a utilization side shell; a heat source side unit, in which a heat source side heat exchanger and a heat source side supply fan are arranged in a heat source side shell; and a movable stand, which carries the utilization side unit and the heat source side unit as a whole, and a pipe is connected to the utilization side blowing outlet of the utilization side shell to guide the air cooled or heated by the utilization side heat exchanger to the air conditioning target space, and the pipe is provided with: a first elbow connected to the utilization side blowing outlet to change the direction of the pipe upward; a reducer arranged downstream of the first elbow to reduce the flow area of ​​the pipe; and a second elbow arranged downstream of the reducer to change the direction of the pipe to blow the air to the air conditioning target space.

[0017] The air conditioner of the present invention is a movable air conditioner having a utilization side heat exchanger and a heat source side heat exchanger, and a pipe for guiding the air to the air conditioning target space is connected to the blow-out port of the shell that sends out the air cooled or heated by the utilization side heat exchanger. In addition, the pipe has: a first curved pipe portion that changes the direction of the pipe so that the air flows upwards compared to the blow-out port; a second curved pipe portion that changes the direction of the pipe so that the air is blown out to the air conditioning target space; and a contraction portion that reduces the flow area of ​​the pipe. With such a structure, the air cooled or heated by the movable air conditioner can be forcefully blown to the upper part of the interior of the air conditioning target space from a position that does not interfere with the operation. Therefore, efficient air conditioning can be performed without interfering with the operation.

[0018] In addition, the air conditioner of the present invention comprises: a utilization side unit, in which a utilization side heat exchanger and a utilization side blow fan are arranged in a utilization side housing; a heat source side unit, in which a heat source side heat exchanger and a heat source side blow fan are arranged in a heat source side housing; and a movable stand, which carries the utilization side unit and the heat source side unit in an integrated manner, and a pipe is connected to the utilization side blow outlet to guide the air cooled or heated by the utilization side heat exchanger to the air conditioning target space, and the pipe is provided with: a first elbow connected to the utilization side blow outlet to change the direction of the pipe upward; a reducer arranged downstream of the first elbow to reduce the flow channel area of ​​the pipe; and a second elbow arranged downstream of the reducer to change the direction of the pipe to blow the air to the air conditioning target space. With such a structure, the air conditioner can be easily moved and arranged in an appropriate position that does not hinder the operation, etc., and the cooled or heated air can be blown to the inside of the air conditioning target space with strong force and efficiently blown to the deep inside of the air conditioning target space. Therefore, high-efficiency air conditioning can be performed without hindering the operation, etc.

[0019] In addition, in the air conditioner of the present invention, the utilization side unit and the heat source side unit may be arranged so that the utilization side outlet of the utilization side shell and the heat source side outlet of the heat source side shell face opposite directions. Thus, cold air and warm air are blown out in substantially opposite directions, and it is possible to suppress the air blown out from the heat source side outlet that is not necessary for air conditioning from flowing into the air conditioning target space. Therefore, efficient cooling or heating can be performed.

[0020] In addition, the air conditioner of the present invention can also be provided with a pipe connection tube made of synthetic resin at the utilization side blowing outlet, the pipe connection tube protrudes from the utilization side shell, constitutes the outer periphery of the utilization side blowing outlet, the pipe is formed by a steel plate, and the first elbow is fixed to the pipe connection tube. Through such a structure, the pipe can be firmly fixed to the utilization side shell. Therefore, high-speed and strong air can be blown from the blowing part of the pipe to the air conditioning target space. In addition, the installation and disassembly of the pipe becomes easy, and it is also easy to adjust the position of the blowing part of the pipe. Therefore, the blowing part of the pipe can be adjusted to an appropriate position according to the position of the air conditioning target space, and efficient air conditioning operation can be performed at a position that does not interfere with operations, etc.

[0021] In addition, according to the air conditioner of the present invention, the blow-out portion of the duct may be arranged at a position higher than the upper surface of the use-side housing and further outward than the side surface of the use-side housing. Thus, the use-side unit and the heat-source side unit of the air conditioner can be arranged at positions that do not hinder operations, etc., and air of appropriate temperature can be appropriately supplied to the air conditioning target space from the blow-out portion of the duct located at a high position away from the use-side unit and the heat-source side unit.

[0022] In addition, the air conditioner according to the present invention can also be a stand arranged outside the air conditioning target space, and the blowing part of the duct is arranged above the inlet and outlet openings of the air conditioning target space, and is arranged to blow air to the upper part of the air conditioning target space. In this way, the air conditioner will not hinder the operation, etc., and the interior of the air conditioning target space can be cooled efficiently.

[0023] In addition, according to the air conditioner of the present invention, a soft duct tube formed of a soft synthetic resin can also be connected to the blow-out portion. As a result, when the air conditioning is running, the soft duct tube is inserted into the interior of the air conditioning target space due to the air supply force, and the air for air conditioning can be introduced into the interior of the air conditioning target space. In addition, when the air conditioning operation stops, the soft duct tube droops due to its own weight, moves to the outside of the air conditioning target space, and hangs near the blow-out portion of the duct. Therefore, the movement of the air conditioning target space becomes easy, and the duct can be prevented from colliding with the wall constituting the air conditioning target space and being damaged.

[0024] In addition, according to the air conditioner of the present invention, the air conditioning target space may also be the interior of a container for transporting cargo. Thus, air cooled or heated to an appropriate temperature can be efficiently blown from the vicinity of the upper portion of the entrance and exit of the container for transporting cargo to the interior of the container. Since the air conditioner is carried at a position away from the entrance and exit of the container for transporting cargo, it does not hinder the loading and unloading operations. Therefore, the interior of the container can be made to an appropriate temperature suitable for the operation without hindering the loading and unloading operations, and the working environment and safety can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side view which shows the schematic structure of the air conditioner which concerns on embodiment of this invention. Figure 2 This is a side view showing an example of a usage state of the air conditioner according to Embodiment of the present invention. Figure 3 It is a rear view showing an example of a usage state of the air conditioner according to the embodiment of the present invention. Figure 4 It is a side view showing another example of the usage state of the air conditioner according to the embodiment of the present invention. Figure 5 It is a side view showing another example of the usage state of the air conditioner according to the embodiment of the present invention. DETAILED DESCRIPTION

[0026] Hereinafter, the air conditioner 1 according to the embodiment of the present invention will be described in detail based on the drawings. Figure 1 1 is a side view showing a schematic structure of an air conditioner 1 according to an embodiment of the present invention. Figure 1 As shown, the air conditioner 1 is a portable spot air conditioner in which a utilization side unit 10 and a heat source side unit 20 are integrally installed on a stand 30 .

[0027] The air conditioner 1 is a device that can cool or heat a large space that is difficult to handle with a conventional packaged air conditioner. The air conditioner 1 can also be used in a container 40 for transporting cargo during loading or unloading operations (see Figure 2 ) for cooling or heating the interior of the room. In addition, the air conditioner 1 can also be used for air conditioning in other factories, workplaces, warehouses, gymnasiums, etc.

[0028] The usage side unit 10 is a device that mainly cools or heats the usage side air and supplies it to the air conditioning target space. The usage side unit 10 has a structure equivalent to an indoor unit of a general package air conditioner.

[0029] Specifically, the utilization side unit 10 has a shell 11 as a utilization side shell, which is a roughly box-shaped box body formed of a metal plate or the like, and a utilization side heat exchanger 12 and a utilization side blower fan 13 as parts constituting a refrigeration cycle are arranged inside the shell 11.

[0030] The heat source side unit 20 is a device that mainly dissipates or absorbs heat from the outside air by the refrigerant. The heat source side unit 20 has a structure equivalent to an outdoor unit of a general package air conditioner.

[0031] Specifically, the heat source side unit 20 has a shell 21 serving as a heat source side shell, which is a roughly box-shaped body formed of a metal plate or the like, and a heat source side heat exchanger 22 and a heat source side supply fan 23 serving as parts constituting a refrigeration cycle are arranged inside the shell 21.

[0032] The utilization side heat exchanger 12 of the utilization side unit 10 is connected to the heat source side heat exchanger 22 of the heat source side unit 20 via the refrigerant piping 28. In detail, the utilization side heat exchanger 12 and the heat source side heat exchanger 22 are connected via a compressor (not shown) that compresses the low-pressure refrigerant to make it high-pressure, an expansion valve (not shown) that expands the high-pressure refrigerant to make it low-pressure, the refrigerant piping 28 and other refrigerant piping (not shown), etc., to form a vapor compression type refrigeration cycle. The refrigerant used in the refrigeration cycle is, for example, HFC refrigerant.

[0033] The housing 11 of the use-side unit 10 is provided with an inlet 15 for sucking air and an outlet 16 as a use-side outlet for blowing out air. A use-side heat exchanger 12 is provided inside the inlet 15, and the use-side heat exchanger 12 performs heat exchange between the air sucked from the outside of the housing 11 and the refrigerant. Thus, for example, during cooling operation, the use-side heat exchanger 12 becomes an evaporator, and the air sucked from the outside is cooled by the refrigerant evaporated in the use-side heat exchanger 12.

[0034] The blower port 16 is provided with a use-side blower fan 13 that blows out the air in the casing 11 after heat exchange with the use-side heat exchanger 12. The use-side blower fan 13 is, for example, a propeller fan, and is driven to rotate by a motor (not shown).

[0035] In the air conditioner 1 of this embodiment, a particularly powerful usage side blower fan 13 is installed. Specifically, the usage side blower fan 13 has a strong air blowing capability of blowing air at a wind speed of 8 m / s from the blower outlet 16. Thus, the cooled or heated air can be sent to a distant place, and a wide room can be cooled or heated efficiently.

[0036] In addition, the air conditioner 1 is provided with a duct 35 for guiding the air cooled or heated by the utilization side unit 10 to the air conditioning target space. Thus, the cold air or warm air required for air conditioning can be efficiently sent to the inside of the air conditioning target space through the duct 35. The details of the duct 35 will be described later.

[0037] The housing 21 of the heat source side unit 20 is formed with an inlet 25 for sucking air and an outlet 26 as a heat source side outlet for blowing out air. A heat source side heat exchanger 22 is provided inside the inlet 25, and the heat source side heat exchanger 22 performs heat exchange between the air sucked from the outside and the refrigerant. Thus, for example, during cooling operation, the refrigerant in the heat source side heat exchanger 22 is cooled by the air flowing in from the inlet 25. In other words, the air sucked from the inlet 25 is heated by heat exchange with the refrigerant in the heat source side heat exchanger 22.

[0038] The heat source side blower fan 23 is provided at the blowout port 26, and the heat source side blower fan 23 blows out the air in the housing 21 after heat exchange with the heat source side heat exchanger 22 to the outside. The heat source side blower fan 23 is, for example, a propeller fan, and is driven to rotate by a motor (not shown). For example, two heat source side blowers 23 may be arranged vertically.

[0039] In addition, a wind direction guide 24 for adjusting the blowing direction of the air blown by the heat source side blower fan 23 may be provided at the blower outlet 26. The wind direction guide 24 has an outer frame portion in a shape surrounding the outer periphery of the heat source side blower fan 23, for example, in a substantially quadrilateral shape, and is formed of a metal plate material, a resin plate material, etc. The wind direction guide 24 corresponds to the heat source side blower fan 23 that is divided into two upper and lower configurations, for example, configured as a pair of upper and lower configurations.

[0040] The stand 30 is a stand that integrally supports the utilization side unit 10 and the heat source side unit 20. The stand 30 is formed of, for example, angle steel, channel steel, or other steel materials. A base 31 is formed at the lower portion of the stand 30, and the outer periphery of the base 31 is in a substantially rectangular frame shape in a plan view. The heat source side unit 20 is fixed to the upper portion of the base 31.

[0041] The stand 30 has a usage-side unit installation stand 32 on which the usage-side unit 10 is installed. The usage-side unit installation stand 32 is formed to protrude upward from the upper portion of the base 31 so as to support the bottom of the usage-side unit 10 at a position higher than the bottom of the heat source-side unit 20.

[0042] By arranging the utilization side unit installation stand 32 on the upper part of the base 31, the utilization side unit 10 is fixed at a high position. In addition, the upper surface portion of the utilization side unit 10 and the upper surface portion of the heat source side unit 20 are substantially at the same height. By arranging the utilization side unit 10 at a high position in this way, the position of the blow-out port 16 of the utilization side unit 10 becomes higher. Moreover, cold air and warm air for air conditioning can be blown to the work space in a wide range and effectively from the duct blow-out port 39 located at a high position via the duct 35.

[0043] The upper portion of the utilization side unit 10 and the upper portion of the heat source side unit 20 are connected and fixed by the connection support 33. By supporting the upper portion of the utilization side unit 10 and the upper portion of the heat source side unit 20 by the connection support 33, deformation of the air conditioner 1 caused by vibration during transportation and use can be suppressed. Thus, the duct 35 extending upward from the utilization side unit 10 can be used to forcefully blow out the air for air conditioning from the duct outlet 39 located at the uppermost portion.

[0044] A drain pan (not shown) may be provided below the utilization side unit 10 and the heat source side unit 20. The drain pan is a component for receiving water dripping from the utilization side heat exchanger 12 of the utilization side unit 10 or the heat source side heat exchanger 22 of the heat source side unit 20 and draining the water to a water distribution pipe (not shown). By providing the drain pan, water dripping from the utilization side heat exchanger 12 or the heat source side heat exchanger 22 can be collected and drained appropriately, and the water can be prevented from scattering into the work space.

[0045] Wheels 34 are provided near the corners of the lower part of the base 31. The wheels 34 are, for example, casters having rubber wheels, etc., or fixed wheels that can move in a predetermined direction or free wheels that can change direction. By providing the wheels 34, the stand 30 is configured to be movable while supporting the utilization side unit 10 and the heat source side unit 20 as a whole.

[0046] The usage side unit 10 and the heat source side unit 20 are installed on the stand 30 so that the air suction ports 15 and 25 face 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 faces the heat source side heat exchanger 22 side.

[0047] In other words, the utilization side unit 10 and the heat source side unit 20 are arranged back to back so that the blow-out port 16 of the utilization side unit 10 and the blow-out port 26 of the heat source side unit 20 face substantially opposite directions, so that air is blown out in substantially opposite directions, respectively. Thus, cold air and warm air are blown out in substantially opposite directions, and effective air conditioning is achieved for logistics warehouses, large-scale factories, gymnasiums, and the like.

[0048] That is, the cooled or heated air can be efficiently and powerfully blown out to the air conditioning target space from the blowout port 16 of the utilization side unit 10. Furthermore, the exhaust hot air for air conditioning can be discharged to a space separated from the space requiring air conditioning from the blowout port 26 of the heat source side unit 20 which is substantially opposite to the blowout port 16 of the utilization side unit 10.

[0049] In addition, the utilization side unit 10 and the heat source side unit 20 may not be arranged back to back. For example, the utilization side unit 10 may be arranged above the heat source side unit 20. In this case, it is also desirable that the blowout port 16 of the utilization side unit 10 and the blowout port 26 of the heat source side unit 20 are arranged to blow air in substantially opposite directions.

[0050] The outlet 16 of the utilization side unit 10 and the outlet 26 of the heat source side unit 20 do not necessarily face completely opposite directions. The outlet 16 and the outlet 26 may be provided so that the air blows out in different directions with an angle difference of, for example, 90 to 270 degrees.

[0051] In addition, although not shown in the figure, a partition plate may be provided between the blow-out port 16 of the utilization side unit 10 and the blow-out port 26 of the heat source side unit 20, and the partition plate may be formed of a plate-shaped member made of synthetic resin or metal. For example, the partition plate may be provided between the housing 11 of the utilization side unit 10 and the housing 21 of the heat source side unit 20. By providing such a partition plate, it is possible to suppress a decrease in air conditioning efficiency caused by mixing of air conditioning air on the utilization side unit 10 side and exhaust hot air on the heat source side unit 20 side.

[0052] Next, the duct 35 will be described in detail. The duct 35 is connected to the air outlet 16 of the usage side unit 10 and serves as a flow path for guiding the air cooled or heated by the usage side heat exchanger 12 and blown by the usage side blower fan 13 to the air conditioning target space.

[0053] The pipe 35 is, for example, a pipe made of a metal material such as a galvanized steel pipe or a stainless steel pipe. The pipe 35 may also be a spiral pipe, for example, having a spiral reinforcement portion formed on the circumference of the pipe. In addition to a straight pipe, the pipe 35 is also connected to an elbow 36, a reducer 37, and an elbow 38. In addition, the outer periphery of the pipe 35 may also be covered with a heat insulating material formed of a synthetic resin or the like. In addition, the pipe 35 is not limited to a round pipe, and may also be a square pipe or the like.

[0054] The elbow 36 is a first elbow forming a first curved pipe portion that changes the direction of the duct 35 so that the air blown out from the outlet 16 flows upward from the outlet 16. The elbow 36 is a 90-degree elbow that changes the flow direction of the air by approximately 90 degrees, and one end of the elbow 36 is connected to the outlet 16.

[0055] Specifically, the blow-out port 16 is provided with a duct connection tube 14, which protrudes from the housing 11 and constitutes the outer periphery of the blow-out port 16. The duct connection tube 14 is, for example, a synthetic resin member and is substantially cylindrical. The interior surrounded by the duct connection tube 14 becomes an air duct connected from the blow-out port 16 to the duct 35. As described above, the pipe 35 is formed of a steel pipe or the like, and one end side of the elbow 36 is fitted in the pipe connection tube 14 and fixed so that the circumferential angle of the fitting portion can be freely changed and the fitting portion can be freely attached and detached.

[0056] In addition, the duct connection tube 14 may also be provided with a variable wind direction adjustment plate (not shown) for adjusting the flow direction of the air blown by the utilization side blower fan 13. With such a structure, the air cooled or heated by the utilization side heat exchanger 12 can flow efficiently into the duct 35.

[0057] By connecting the elbow 36 to the duct connection tube 14, the duct 35 can be firmly fixed to the casing 11. Therefore, high-speed and strong air can be blown out from the duct outlet 39 at the top end of the duct 35 into the air conditioning target space.

[0058] In addition, the duct 35 can be easily installed and removed, and the position of the duct outlet 39 can be easily adjusted. Therefore, the duct outlet 39 can be adjusted to an appropriate position according to the position of the air conditioning target space, and efficient air conditioning operation can be performed at a position that does not interfere with work.

[0059] The reducer 37 is a reducing joint provided downstream of the elbow 36, and serves as a constriction portion that reduces the flow area of ​​the pipe 35. Specifically, the large diameter portion at one end of the reducer 37 is fitted into the pipe piping on the elbow 36 side, and the small diameter portion at the other end is fitted into the pipe piping on the elbow 38 side.

[0060] By providing the reducing pipe 37 in the duct 35 in this manner, the wind speed of the air-conditioning air sent out from the usage-side blower fan 13 can be increased, and the air-conditioning air can be blown out strongly from the duct blow-out port 39 .

[0061] In addition, the reducer 37 is provided in the pipe piping between the elbow 36 and the elbow 38, that is, the pipe piping facing upward downstream of the elbow 36. Therefore, compared with the case where the reducer 37 is provided upstream of the elbow 36 or downstream of the elbow 38, the horizontal position of the pipe outlet 39 can be made closer to the housing 11.

[0062] In addition, the reducer 37 may also be provided upstream of the elbow 36 or downstream of the elbow 38. In addition, the constricted portion that reduces the flow area of ​​the pipe 35 is not limited to the reducer 37, and for example, the first curved pipe portion or the second curved pipe portion may also be formed into a different diameter shape that reduces the flow area.

[0063] The elbow 38 is provided downstream of the reducer 37 and is a second elbow that forms a second curved pipe portion that changes the direction of the duct 35 so as to blow the air cooled or heated by the utilization side unit 10 into the air-conditioned space.

[0064] Specifically, the elbow 38 is a 90-degree elbow that changes the air flow direction by about 90 degrees. Near one end of the elbow 38 is connected to the duct piping on the side of the reducer 37, and near the other end of the elbow 38 becomes a duct outlet 39 that blows cold air or warm air from the duct 35 to the air conditioning target space. The duct outlet 39 is the blowing portion of the duct 35.

[0065] Thus, by providing the duct 35 having the elbow 36, the reducer 37, and the elbow 38, the air cooled or heated by the usage-side unit 10 can be strongly blown to the upper part of the air-conditioned space from a position that does not interfere with work.

[0066] That is, the air conditioner 1 can be easily moved and installed at an appropriate position that does not interfere with work, etc., and can efficiently blow air for air conditioning to the deep inside of the air conditioning target space from the position that does not interfere with work, etc. Therefore, according to the air conditioner 1, efficient air conditioning can be performed without interfering with work, etc.

[0067] In the above description, the air conditioner 1 is a form in which the housing 11 of the utilization side unit 10 and the housing 21 of the heat source side unit 20 are carried on a movable stand 30. However, the embodiment of the air conditioner 1 is not limited to this. For example, the air conditioner 1 may also be a structure in which the utilization side heat exchanger 12, the utilization side blower fan 13, the heat source side heat exchanger 22, the heat source side blower fan 23, the compressor not shown, the expansion valve and other substantially all elements constituting the refrigeration cycle are arranged in a movable housing not shown.

[0068] In this way, in a structure in which the utilization side heat exchanger 12 and the heat source side heat exchanger 22 are arranged in a movable shell, the duct 35 that guides the air cooled or heated by the utilization side heat exchanger 12 to the air conditioning target space is connected to the blow-out port of the shell, thereby enabling efficient air conditioning operation without interfering with operations.

[0069] Next, refer to Figures 2 to 5 , a usage example of the air conditioner 1 according to this embodiment is described. Figure 2 1 is a side view showing an example of the usage state of the air conditioner 1. Figure 2 As shown, the air conditioner 1 may use the air-conditioned space as, for example, the interior of a container 40 for transporting cargo.

[0070] Specifically, the stand 30 of the air conditioner 1 is placed on a workbench 46 or the like, which is located behind the container 40, that is, outside the opening 43 for loading and unloading goods, for loading and unloading. Specifically, the air conditioner 1 is placed on the workbench 46 in such a manner that the air outlet 16 of the side unit 10 faces the opening 43 of the container 40, that is, in such a manner that the duct air outlet 39 faces the opening 43 of the container 40.

[0071] Furthermore, the work platform 46 on which the air conditioner 1 is placed is generally provided at a position higher than the base surface 45 on which the transport vehicle of the container 40 is parked, but the heights of the work platform 46 and the base surface 45 may be substantially the same.

[0072] Here, the duct 35 is provided so that the duct outlet 39 is located near the upper part of the opening 43 which is the entrance and exit opening of the container 40. Specifically, the duct outlet 39 is located at a position higher than the bottom surface 41 of the container 40 and lower than the top surface 42, and is located near the top surface 42, that is, closer to the top surface 42 than the bottom surface 41. The duct 35 is located outside the container 40 and is not inserted into the inside of the container 40. In addition, the duct outlet 39 of the duct 35 may be slightly inserted into the inside of the container 40.

[0073] Figure 3 1 is a rear view showing an example of a usage state of the air conditioner 1, and is a schematic diagram of the air conditioner 1 viewed from the heat source side unit 20 side and the container 40 viewed from the opening 43 side. Figure 3 As shown, the air conditioner 1 is disposed at a position away from the opening 43 of the container 40 to the side.

[0074] Specifically, when viewed from the direction toward opening 43 of container 40 , air conditioner 1 is located leftward or rightward away from opening 43 , and side surface 18 of casing 11 on the opening 43 side is located outside opening 43 .

[0075] The duct outlet 39 of the duct 35 is provided above the upper surface 17 of the casing 11 and outside the side surface 18 of the casing 11. The duct 35 is provided so that the upper portion thereof is inclined toward the opening 43 side.

[0076] Specifically, the duct outlet 39 is located near the upper part of the opening 43 of the container 40, and more specifically, located near the top surface 42 and facing the opening 43. That is, when viewed from the direction toward the opening 43 of the container 40, the duct outlet 39 is located at a position overlapping with the opening 43.

[0077] By utilizing this, the air conditioner 1 can supply air of an appropriate temperature from the duct outlet 39 located at a high position away from the usage-side unit 10 and the heat-source-side unit 20 into the container 40 as the air conditioning target space.

[0078] That is, the air conditioner 1 can efficiently blow the air cooled or heated to an appropriate temperature by the utilization side unit 10 into the interior of the container 40 from the vicinity of the upper portion of the opening 43 of the cargo transport container 40. Therefore, the interior of the container 40 as the air conditioning target space can be efficiently air-conditioned.

[0079] In particular, since the duct outlet 39 is provided at a high position and near the upper portion of the opening 43, the air cooled by the side unit 10 can be blown out near the upper portion of the opening 43, and the cold air can be supplied deep inside the container 40. Therefore, even on a hot summer day, appropriate cold air can be blown deep inside the container 40 where the temperature has reached a high temperature, and the interior of the container 40 can be efficiently spot cooled.

[0080] Figure 4 and Figure 5 2 is a side view schematically showing another example of the usage state of the air conditioner 1. Figure 4 The state of the air conditioning operation in which air is supplied from the utilization side unit 10 is shown. Figure 5 This shows a state when the air conditioning operation is stopped and air is not being sent from the usage-side unit 10 .

[0081] As mentioned above, the duct outlet 39, i.e., the top end of the duct 35, may also be slightly inserted into the interior of the container 40. Figure 4As shown, a freely bendable soft duct pipe 44 made of soft synthetic resin such as polyethylene or soft polyvinyl chloride may be connected to the top end of the duct 35 , and the soft duct pipe 44 may be inserted into the interior of the container 40 .

[0082] The length of the soft duct pipe 44 can be, for example, about 1 to 10 m, and is preferably shorter than the height of the duct outlet 39, for example, 1 to 2 m. By connecting the soft duct pipe 44 to the duct outlet 39 in this way, air can be efficiently blown to the space inside the container 40 that requires cold air or warm air through the soft duct pipe 44. Therefore, efficient fixed-point cooling can be performed.

[0083] In addition, as mentioned above, the soft duct tube 44 is formed of a soft synthetic resin material that can be freely bent. Figure 5 As shown, when the air conditioning operation of the air conditioner 1 is stopped and air is not supplied from the usage side unit 10 for air conditioning, the soft duct tube 44 droops due to its own weight and becomes suspended from the top of the duct 35, that is, near the duct outlet 39 at the top of the elbow 38.

[0084] If the air conditioning operation is started, Figure 4 As shown, the soft duct tube 44 connected to the top end of the duct 35 is inserted into the container 40 due to the strong wind pressure of the air blown out from the duct 35, so that the air for air conditioning can be appropriately introduced into the deep part of the container 40.

[0085] Moreover, if Figure 5 As shown, when the air conditioning operation is stopped, the soft duct tube 44 descends due to its own weight, moves to the outside of the container 40, and is suspended on the top end of the duct 35. In this way, the operation of inserting the soft duct tube 44 into the container 40 and the operation of removing the soft duct tube 44 from the container 40 are automatically performed by the force of the air blown out from the duct outlet 39 and the own weight of the soft duct tube 44, so it is easy.

[0086] Furthermore, by providing the soft duct pipe 44 at the top of the duct 35, it is not necessary to insert the metal duct 35 fixed to the utilization side unit 10 and provided in an upwardly erected manner into the container 40. This can prevent the duct 35, the utilization side unit 10, etc. from being damaged by colliding with the elbow 38 of the duct 35 when the transport vehicle moves backward.

[0087] Reference Figures 3 to 5In each of the above-mentioned usage examples, the air conditioner 1 is carried outside the container 40, and the outlet 26 of the heat source side unit 20 is oriented substantially opposite to the opening 43 of the container 40. Thus, the warm air or cold air exhausted from the heat source side unit 20 does not directly flow into the interior of the container 40. Therefore, it is possible to suppress the exhaust hot air from flowing into the interior of the container 40, and only the air required for cooling or heating can be efficiently supplied to the interior of the container 40 through the duct 35. Therefore, a high-efficiency cooling or heating operation with less heat loss is achieved.

[0088] Furthermore, since the utilization side unit 10 and the heat source side unit 20 of the air conditioner 1 are placed away from the opening 43 of the entrance and exit of the container 40 for transporting cargo, loading and unloading operations are not hindered. That is, a moving area for a forklift or the like that transports cargo to the container 40 is ensured near the opening 43. Therefore, the air conditioner 1 can make the inside of the container 40 a suitable temperature suitable for operations, etc., without hindering the loading and unloading operations, thereby improving the working environment and enhancing safety.

[0089] In addition, according to the air conditioner 1 of the present invention, the stand 30 may be arranged outside the container 40 as the air conditioning target space, and the duct outlet 39 may be arranged near the upper part of the opening 43 of the container 40, and may be arranged to blow air to the upper part of the conditioning target space. The duct outlet 39 may be located outside the container 40, that is, outside the opening 43, or inside the container 40, that is, inside the opening 43. Thus, the air conditioner 1 will not interfere with the operation, and the interior of the air conditioning target space can be efficiently cooled.

[0090] Furthermore, the air conditioner 1 is easy to move and the installation position can be easily adjusted. Therefore, the air conditioner 1 does not hinder the loading and unloading work of the container 40, and the operator can perform the work efficiently.

[0091] For example, if loading or unloading of one container 40 is completed, after moving the container 40, the air conditioner 1 can be easily moved to an appropriate position that does not hinder the operation of the next container 40. In this way, the operator can efficiently load and unload the container 40.

[0092] In addition, the operator can also easily adjust the position of the duct outlet 39 of the duct 35 so that appropriate cold air or warm air reaches the vicinity of the work place. In this way, by easy position adjustment, appropriate cold air or warm air can be blown to the vicinity of the operator who requires cooling or heating.

[0093] The above describes an example in which the air conditioner 1 of the present embodiment is used for air conditioning of a container 40 for transporting cargo, but the use of the air conditioner 1 is not limited thereto. The air conditioner 1 is easy to move and install, and can use the duct 35 to forcefully blow out air for air conditioning from a high position, and can be moved to other places and used for fixed-point air conditioning, etc.

[0094] Specifically, the air conditioner 1 can be installed inside a factory, a workplace, a warehouse, a gymnasium, etc. Even when used in such a place, the air conditioner 1 can appropriately supply the air cooled or heated by the utilization side unit 10 to a place requiring air conditioning in the air conditioning target space via the duct 35. Thus, a highly efficient fixed-point air conditioning operation can be performed in which the mixing of the air conditioning air blown out from the duct outlet 39 of the duct 35 and the exhaust hot air blown out from the heat source side unit 20 is suppressed.

[0095] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Description of Reference Numerals

[0096] 1: Air conditioner 10: Use side units 11: Shell 12: Utilization side heat exchanger 13: Use side blower fan 14: Pipe connection tube 15: Suction port 16: Blowing outlet 17: Upper surface 18: Side 20: Heat source side unit 21: Shell 22: Heat exchanger on heat source side 23: Heat source side supply fan 24: Wind direction guide 25: Suction port 26: Blowing outlet 28: Refrigerant piping 30: Set up the platform 31: Abutment 32: Use the side unit to set up the table 33: Connecting support 34: Wheel 35: Pipeline 36: Elbow 37: Reducer 38: Elbow 39: Pipeline blow outlet 40: Container 41: Bottom 42: Top 43: Opening 44: Soft pipe 45: Base surface 46: Workbench.

Claims

1. An air conditioner, comprising a utilization-side heat exchanger and a heat source-side heat exchanger, wherein: A duct for guiding the air to the air-conditioning target space is connected to the air outlet of the casing for sending out the air cooled or heated by the utilization-side heat exchanger. The pipeline has: a first curved pipe portion, which changes the direction of the pipe so that the air flows upward from the outlet; a second curved pipe portion, which changes the direction of the pipe so as to blow the air toward the air-conditioned space; as well as The constricted tube portion reduces the flow area of ​​the pipeline.

2. An air conditioner, characterized in that: have: The utilization side unit has a utilization side heat exchanger and a utilization side air supply fan disposed in a utilization side housing; The heat source side unit has a heat source side heat exchanger and a heat source side air supply fan disposed in a heat source side housing; as well as A movable stand integrally supports the utilization side unit and the heat source side unit. A duct is connected to the usage-side outlet of the usage-side casing to guide the air cooled or heated by the usage-side heat exchanger to the air-conditioned space. The pipeline is provided with: A first elbow is connected to the side blowing outlet to change the direction of the pipeline upward; A reducer, arranged downstream of the first elbow, to reduce the flow area of ​​the pipeline; as well as The second elbow is disposed downstream of the reducer and changes the direction of the duct to blow the air toward the air-conditioned space.

3. The air conditioner according to claim 2, characterized in that: The usage-side unit and the heat-source-side unit are arranged so that the usage-side blowing outlet of the usage-side casing and the heat-source-side blowing outlet of the heat-source-side casing face opposite directions.

4. The air conditioner according to claim 2, characterized in that: A pipe connection tube made of synthetic resin is provided at the utilization side blowing outlet. The pipe connection tube protrudes from the utilization side shell and constitutes the outer peripheral portion of the utilization side blowing outlet. The pipe is formed of steel plate, The first elbow is fixed to the pipeline connecting tube.

5. The air conditioner according to any one of claims 2 to 4, characterized in that: The blow-out portion of the duct is provided above the upper surface of the usage-side casing and outside the side surface of the usage-side casing.

6. The air conditioner according to claim 5, characterized in that: The stand is arranged outside the air-conditioned space. The blowing unit is provided at an upper portion of an inlet and outlet opening of the air-conditioned space, and is provided to blow the air to an upper portion of the air-conditioned space.

7. The air conditioner according to claim 5, characterized in that: A soft duct pipe formed of soft synthetic resin is connected to the blow-out portion.

8. The air conditioner according to claim 6, characterized in that: The air-conditioned space is the interior of a container for transporting cargo.

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