Air conditioning system

Abstract

To provide an air conditioning system that has a small footprint, is easy to move, exhibits excellent air conditioning performance, can deliver air cooled or heated to a suitable temperature to the air-conditioned space, and offers high productivity. [Solution] The air conditioning system 1 comprises a first heat pump air conditioner 2A having a first user-side unit 10A and a first heat source-side unit 20A, and a second heat pump air conditioner 2B having a second user-side unit 10B and a second heat source-side unit 20B. The first heat pump air conditioner 2A and the second heat pump air conditioner 2B are mounted on a single movable frame 30. This allows for excellent air conditioning performance using two heat pump air conditioners 2 without increasing the size of the frame 30 and thus expanding the installation area.

Description

Technical Field

[0001] The present invention relates to an air conditioner for a movable spot air conditioner, and more particularly to an air conditioner in which a user-side unit and a heat source-side unit are placed on a movable pedestal and integrated.

Background Art

[0002] A mobile air conditioner that performs spot air conditioning is known as an air conditioner used for cooling or heating a large-scale space where it is difficult to install a normal air conditioner, such as a factory, a workplace, a warehouse, a gymnasium, etc. As this type of air conditioner, there is one that integrally includes a user-side unit and a heat source-side unit on a movable pedestal.

[0003] For example, Patent Document 1 discloses an air conditioner including 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 connected to the user-side unit via a refrigerant pipe, and a movable pedestal on which the user-side unit and the heat source-side unit are placed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In this type of air conditioner, sufficient cooling capacity to cool the air or sufficient heating capacity to heat the air so that the air supplied to the air-conditioned space reaches a suitable temperature is required. For example, in order to supply air at a suitable temperature to the air-conditioned space in response to an increase in the area of the air-conditioned space due to the enlargement of the facility, etc., it is necessary to further increase the air conditioning capacity of the air conditioner.

[0006] Furthermore, in order to cope with rising outside temperatures, such as extremely hot days and scorching hot days, which are thought to be the effects of recent climate change, or to cope with low outside temperatures due to abnormal cold waves, it is necessary to further improve the cooling or heating capacity of air conditioning systems.

[0007] However, conventional air conditioning systems have limitations in improving cooling or heating capacity. For example, in summer when ambient temperatures become very high due to rising outside temperatures, they may not provide sufficient air conditioning to prevent heatstroke.

[0008] Furthermore, to obtain the necessary cooling or heating capacity, it might be possible to increase the number of air conditioning units installed. However, increasing the number of air conditioning units increases the space occupied by them, which can become an obstruction and reduce the usable space for the intended purpose of the facility, such as workspace or storage, in factories and warehouses.

[0009] Furthermore, to increase cooling or heating capacity, it is conceivable to enlarge the user-side unit or heat source-side unit of the air conditioning system. However, enlarging the user-side unit or heat source-side unit would also increase the floor area occupied by the air conditioning system. In addition, enlarging the user-side unit or heat source-side unit would require redesigning the housing and other components, which presents challenges from a productivity standpoint.

[0010] This invention has been made in view of the above circumstances, and its purpose is to provide an air conditioning device that has a small installation area, is easy to move, exhibits excellent air conditioning performance, can deliver air cooled or heated to a suitable temperature to the air-conditioned space, and has excellent productivity. [Means for solving the problem]

[0011] The air conditioning system of the present invention comprises a first heat pump air conditioner having a first user-side unit and a first heat source-side unit, and a second heat pump air conditioner having a second user-side unit and a second heat source-side unit, wherein the first heat pump air conditioner and the second heat pump air conditioner are mounted on a single movable frame. [Effects of the Invention]

[0012] The air conditioning system of this invention comprises a first heat pump air conditioner having a first user-side unit and a first heat source-side unit, and a second heat pump air conditioner having a second user-side unit and a second heat source-side unit, wherein the first and second heat pump air conditioners are mounted on a single movable frame. This makes it possible to improve the air conditioning capacity of the air conditioning system by using two heat pump air conditioners without increasing the size of the frame and thus significantly expanding the installation area of ​​the air conditioning system. Specifically, compared to the conventional air conditioning system in which two heat pump air conditioners are mounted on separate frames, the area of ​​the frame can be reduced, and the area occupied by the air conditioning system can be reduced. Furthermore, the two heat pump air conditioners can cool or heat the air to a suitable temperature and efficiently deliver it to the air-conditioned space. In addition, the air conditioning system of this invention can improve the air conditioning capacity without significantly changing the size of the user-side unit and heat source-side unit from a conventional air conditioner. Therefore, it is possible to provide a high-capacity air conditioning system with excellent productivity.

[0013] Furthermore, in the air conditioning system of this invention, the first user-side unit and the second user-side unit are arranged side by side vertically, with their air outlets facing forward, while the first heat source-side unit and the second heat source-side unit may be arranged back-to-back with their air outlets facing in opposite directions, either to the left or to the right. This configuration makes it possible to reduce the area of ​​the mounting frame and thus reduce the area occupied by the air conditioning system. In particular, the width dimension of the air conditioning system, that is, the width dimension in the direction lateral to the direction of air discharge from the user-side unit, can be made equivalent to that of a conventional air conditioning system in which one heat pump air conditioner is mounted on one mounting frame.

[0014] Furthermore, in the air conditioning system of the present invention, at least one of the outlets of the first user-side unit and the second user-side unit may be provided with a user-side airflow guide to adjust the direction of the airflow. This allows for efficient supply of air cooled or heated to a suitable temperature from each user-side unit to a distant space to be air-conditioned.

[0015] Furthermore, in the air conditioning system of the present invention, at least one of the outlets of the first heat source unit and the second heat source unit may be provided with a heat source side airflow guide to adjust the direction of the airflow. This allows the high-temperature air containing cooling exhaust heat, or the low-temperature air after heating heat absorption, blown out from the heat source unit, to be sent away from the space to be air-conditioned. Therefore, it is possible to suppress the reheating or recooling of the air for air conditioning, which has been cooled or heated to a suitable temperature, by the circulation of air sent out from the heat source unit, and enable highly efficient air conditioning operation.

[0016] Furthermore, in the air conditioning system of the present invention, the heat source side airflow guide may guide the airflow direction of the air blown out from the first heat source side unit or the second heat source side unit toward the rear or upward. This allows the air blown out from the heat source side unit to be sent toward the space to be air-conditioned. Therefore, it is possible to suppress the reheating or recooling of the air supplied to the space to be air-conditioned due to the recirculation of the exhaust gas blown out from the heat source side unit. [Brief explanation of the drawing]

[0017] [Figure 1] This is a perspective view showing the schematic configuration of an air conditioning system according to an embodiment of the present invention. [Figure 2] This is a side view showing a schematic configuration of an air conditioning system according to an embodiment of the present invention. [Figure 3] This is a plan view showing the schematic configuration of an air conditioning system according to an embodiment of the present invention. [Figure 4] This is a rear view showing an example of the airflow direction of the heat source side unit of an air conditioning system according to an embodiment of the present invention. [Figure 5] This is a plan view showing another example of the airflow direction of the heat source side unit of an air conditioning system according to an embodiment of the present invention. [Figure 6] This is a perspective view showing a schematic configuration of an example in which the user-side airflow guide of an air conditioning system according to an embodiment of the present invention has been modified. [Modes for carrying out the invention]

[0018] Hereinafter, an air conditioning device according to an embodiment of the present invention will be described in detail based on the drawings. FIG. 1 is a perspective view showing a schematic configuration of an air conditioner 1 according to an embodiment of the present invention. In each drawing, the blowing direction of air is indicated by an arrow. Referring to FIG. 1, the air conditioner 1 is a device that performs air conditioning operation using a vapor compression refrigeration cycle. Specifically, it is a movable powerful spot air conditioner that supplies cold air or warm air to a local air conditioning target space that requires cooling or heating in large-scale facilities such as factories, workplaces, warehouses, and gymnasiums.

[0019] The air conditioner 1 has a movable base 30, and a plurality of heat pump type air conditioners 2 are placed on the base 30. Specifically, two heat pump type air conditioners 2, that is, a first heat pump type air conditioner 2A and a second heat pump type air conditioner 2B are provided on the base 30. Thus, a movable heat pump is constituted by integrating the movable base 30 and the plurality of heat pump type air conditioners 2.

[0020] Each heat pump type air conditioner 2 has a use-side unit 10 and a heat source-side unit 20. That is, the first heat pump type air conditioner 2A has a first use-side unit 10A as the use-side unit 10 and a first heat source-side unit 20A as the heat source-side unit 20, and the second heat pump type air conditioner 2B has a second use-side unit 10B as the use-side unit 10 and a second heat source-side unit 20B as the heat source-side unit 20.

[0021] The use-side unit 10 is a device that mainly cools or heats the use-side air and supplies it to the air conditioning target space. The use-side unit 10 has a configuration corresponding to the indoor unit of a general package air conditioner.

[0022] The heat source-side unit 20 is a device that mainly releases heat from the refrigerant to the air outside the air conditioning target or the refrigerant absorbs heat from the air outside the air conditioning target. The heat source-side unit 20 has a configuration corresponding to the outdoor unit of a general package air conditioner.

[0023] The housing 11 of the user-side unit 10 and the housing 21 of the heat source-side unit 20 are both designed for outdoor installation, and the user-side unit 10 has specifications that are approximately the same as those of the heat source-side unit 20 in terms of weather resistance and waterproofing.

[0024] The user-side unit 10 and the heat source-side unit 20 are connected via refrigerant piping 29 (see Figure 2), forming a heat pump type air conditioner 2 with a vapor compression type refrigeration cycle circuit.

[0025] More specifically, the first user-side unit 10A and the first heat source-side unit 20A are connected by piping to form the refrigeration cycle circuit of the first heat pump air conditioner 2A. Furthermore, the second user-side unit 10B and the second heat source-side unit 20B are connected by piping to form the refrigeration cycle circuit of the second heat pump air conditioner 2B. The refrigerant paths of the first heat pump air conditioner 2A and the second heat pump air conditioner 2B may be configured as completely independent paths, without being connected to each other.

[0026] Figure 2 is a side view showing the schematic configuration of the air conditioning system 1. Referring to Figures 1 and 2, the user-side unit 10 has a housing 11 which is a roughly box-shaped enclosure made of a metal plate or the like, and a user-side heat exchanger 12 and a user-side fan 13, which are components that constitute the refrigeration cycle, are provided inside the housing 11.

[0027] The housing 11 of the user-side unit 10 has an intake port 15, which is an opening that draws ambient air into the housing 11, and an outlet port 16, which is an opening that serves as a user-side outlet for blowing air out from the inside of the housing 11.

[0028] The user-side unit 10 is mounted on the front side (left side in Figure 2) of the frame 30, with the air outlet 16 facing forward. During air conditioning operation, the area in front of the air conditioning unit 1, i.e., in front of the air outlet 16, becomes the air-conditioned space.

[0029] Inside the housing 11, more specifically inside the intake port 15, there is a user-side heat exchanger 12 that performs heat exchange between the air drawn in from the surroundings and the refrigerant. The user-side heat exchanger 12 is, for example, a fin-and-tube type heat exchanger. During cooling operation, the air drawn in from the surroundings is cooled by the refrigerant that evaporates inside the user-side heat exchanger 12.

[0030] The number of heat transfer tube rows in the user-side heat exchanger 12, i.e., the number of heat transfer tube rows in the direction of airflow, is, for example, 2 rows. The number of heat transfer tube rows in the user-side heat exchanger 12 may be 3, 4, or 5 or more rows, and may be greater than the number of heat transfer tube rows in the heat source-side heat exchanger 22 (see Figure 3), which will be described later.

[0031] Inside the housing 11, more specifically inside the air outlet 16, there is a user-side fan 13 that sends the air cooled or heated by the user-side heat exchanger 12 to the outside of the housing 11. The user-side fan 13 is, for example, a propeller fan and is rotationally driven by a motor (not shown).

[0032] Furthermore, the airflow velocity of the user-side fan 13 may be set to be greater than the airflow velocity of the heat source-side fan 23. This allows the air blown out from the user-side unit 10 by the user-side fan 13 to be efficiently supplied to the air-conditioned space at a distance.

[0033] In the air conditioning system 1 according to this embodiment, a particularly powerful user-side fan 13 is installed. Specifically, the user-side fan 13 has a powerful air-blowing capacity that blows air out from the outlet 16 at a wind speed of 8 m / s. This allows cooled or heated air to be delivered over long distances, enabling efficient cooling or heating of large indoor spaces and other air-conditioned areas.

[0034] Furthermore, the air outlet 16 is provided with a user-side airflow guide 14 for adjusting the direction of airflow sent by the user-side fan 13. The user-side airflow guide 14 has an outer circumference that surrounds the outer circumference of the user-side fan 13, and for example, has a substantially cylindrical or substantially polygonal cylindrical shape.

[0035] The interior of the user-side airflow guide 14, surrounded by its outer periphery, is an opening through which air flows, connected to the air outlet 16. Inside the user-side airflow guide 14, there is a variable airflow adjustment plate (not shown) that adjusts the airflow. With this configuration, air cooled or heated to a suitable temperature by the user-side heat exchanger 12 can be efficiently directed to the air-conditioned space located far away where it is needed.

[0036] Figure 3 is a plan view showing the schematic configuration of the air conditioning system 1. Referring to Figure 3, the heat source side unit 20 has a housing 21 which is a roughly box-shaped enclosure made of a metal plate or the like, and a heat source side heat exchanger 22 and a heat source side fan 23, which are components that constitute the refrigeration cycle, are provided inside the housing 21.

[0037] The housing 21 of the heat source unit 20 has an intake port 25, which is an opening for drawing air into the housing 21, and an outlet port 26, which is an opening that serves as a heat source side outlet for blowing air from the inside of the housing 21 to the outside.

[0038] Inside the intake port 25, a heat source side heat exchanger 22 is provided to exchange heat between the air drawn in from the surroundings and the refrigerant. The heat source side heat exchanger 22 is, for example, a fin-and-tube type heat exchanger. During cooling operation, the refrigerant in the heat source side heat exchanger 22 is cooled and condensed by the air flowing in from the intake port 25. In other words, the air drawn in from the intake port 25 is heated by exchanging heat with the refrigerant in the heat source side heat exchanger 22.

[0039] The number of heat transfer tube rows in the heat source side heat exchanger 22, i.e., the number of heat transfer tube rows in the direction of airflow, is, for example, 2 rows. The number of heat transfer tube rows in the heat source side heat exchanger 22 may be 3, 4, or 5 or more rows.

[0040] The heat source side heat exchanger 22 is connected to the utilization side heat exchanger 12 via refrigerant piping 29. More specifically, the utilization side heat exchanger 12 and the heat source side heat exchanger 22 are connected via a compressor (not shown) that compresses low-pressure refrigerant to high pressure, an expansion valve (not shown) that expands high-pressure refrigerant to low pressure, refrigerant piping 29, and other refrigerant piping (not shown), forming a vapor compression type refrigeration cycle circuit. The refrigerant used in the refrigeration cycle is, for example, an HFC refrigerant.

[0041] Referring to Figures 1 to 3, the support frame 30 is a base that integrally supports the user-side unit 10 and the heat source-side unit 20. The support frame 30 is formed from, for example, angle steel, channel steel, or other steel materials. The outer circumference of the support frame 30 is formed in a roughly rectangular frame shape when viewed from above, and the user-side unit 10 and the heat source-side unit 20 are fixed to the upper part of the support frame 30.

[0042] As shown in Figure 2, wheels 31 are provided on the lower part of the frame 30, for example, near the corners and near the center of the left and right sides. The wheels 31 are casters, for example, rubber wheels, and may be swivel wheels that can change direction, or fixed wheels that can move in a predetermined direction. By providing the wheels 31, the frame 30 is configured to be movable while integrally supporting the first heat pump air conditioner 2A and the second heat pump air conditioner 2B.

[0043] In the air conditioning system 1, the user-side unit 10 is mounted on the front side of the frame 30 (left side in Figure 2), and the heat source-side unit 20 is mounted on the rear side of the frame 30 (right side in Figure 2). Furthermore, the first user unit 10A and the second user unit 10B are arranged side by side vertically, and when the air conditioning is in operation, their respective air outlets 16 face forward.

[0044] Furthermore, an upper unit mounting base 32 on which the second user-side unit 10B is placed is provided on the front side of the frame 30. The second user-side unit 10B is located above the first user-side unit 10A and is fixed to the upper part of the upper unit mounting base 32.

[0045] Referring to Figure 3, the first heat source unit 20A and the second heat source unit 20B are arranged back-to-back so that their respective outlets 26 face in opposite directions, either to the left or to the right, and their respective intake ports 25 are approximately opposite each other. For example, the outlet 26 of the first heat source unit 20A faces to the left side (downward in Figure 3) of the air conditioner 1, and the outlet 26 of the second heat source unit 20B faces to the right side (upward in Figure 3) of the air conditioner 1.

[0046] This configuration allows for a reduction in the area of ​​the frame 30, thereby reducing the area occupied by the air conditioning unit 1. In particular, the width dimension of the air conditioning unit 1, that is, the width dimension in the lateral direction (up and down direction in Figure 3) with respect to the direction of air discharge from the user-side unit 10, can be made approximately the same as that of a conventional air conditioning unit in which one heat pump type air conditioner is mounted on one frame.

[0047] Referring to Figures 1 to 3, multiple air outlets 26 are provided on the outer surface of the heat source unit 20, more specifically on the left and right outer surfaces of the air conditioning unit 1 (the upper and lower outer surfaces in Figure 3), and multiple heat source fans 23 are provided on the heat source unit 20 to correspond to each air outlet 26.

[0048] Specifically, each heat source unit 20 has two air outlets 26 arranged vertically, and the heat source fan 23 is also provided in two stages, vertically, corresponding to the air outlets 26. The heat source fan 23 is, for example, a propeller fan and is rotationally driven by a motor (not shown).

[0049] With this configuration, the heat source unit 20 can efficiently discharge high-temperature air heated by the refrigerant due to the waste heat from cooling operation, or air that has been cooled by the refrigerant as a heat source during heating operation, toward the outside away from the space to be air-conditioned. As a result, an air conditioning system 1 is obtained that has a small installation area, is easy to move, and exhibits excellent air conditioning performance.

[0050] Figure 4 is a rear view showing an example of the airflow direction of the heat source unit 20. Referring to Figures 2 and 4, at least one outlet 26 of the heat source unit 20 may be provided with a heat source side airflow guide 24 as an airflow guide mechanism to adjust the direction of airflow from the heat source unit 20. Figure 4 shows a cross-section of the heat source side airflow guide 24.

[0051] By providing the heat source side airflow guide 24, high-temperature air containing exhaust heat from cooling, or low-temperature air after heating, blown out from the user-side unit 10 can be directed away from the space to be air-conditioned.

[0052] Therefore, it is possible to suppress the reheating or recooling of the air used for air conditioning, which has been cooled or heated to a suitable temperature, by the circulation of air sent from the heat source unit 20, thereby enabling highly efficient air conditioning operation.

[0053] Specifically, the heat source side airflow guide 24 includes an outer frame-shaped guide frame 27, for example, a roughly rectangular shape, that surrounds the outer circumference of the heat source side fan 23, and a plurality of guide plates 28 provided in the inner opening surrounded by the guide frame 27. The guide frame 27 and the guide plates 28 are formed from, for example, metal plate material or resin plate material.

[0054] The guide plate 28 is, for example, a long, plate-shaped member extending horizontally, and is inclined such that the outside of the short side, i.e., the direction in which air is blown out from the outlet 26, is upward, forming a louver-shaped airflow guide mechanism. The heat source side airflow guide 24 may also be a variable airflow mechanism that can change the inclination angle of the guide plate 28 to adjust the direction of airflow.

[0055] In this way, by providing the heat source-side airflow guide 24 with a guide plate 28 that is inclined so that the outside of the air outlet 26 faces upward, air that is not needed for air conditioning can be discharged upward away from the space to be air-conditioned. Therefore, an air conditioning device 1 can be obtained that has a small installation area, is easy to move, and exhibits excellent air conditioning performance.

[0056] Figure 5 is a plan view showing another example of the airflow direction of the heat source unit 20. Note that Figure 5 also shows a cross-section of the heat source airflow guide 24. Referring to Figure 5, the heat source airflow guide 24 may also be configured to guide the air blown out from the heat source unit 20 so that its flow direction is towards the rear.

[0057] Specifically, the guide plate 28 may be, for example, a long, plate-shaped member extending in the vertical direction, and may be configured as a wind direction guide mechanism inclined so that the outside of the short side direction, i.e., the direction in which the air is blown out, is towards the rear.

[0058] Furthermore, the heat source side airflow guide 24 may be configured to be detachable from the housing 21 of the heat source side unit 20, and the direction of airflow may be changed by changing the mounting direction of the heat source side airflow guide 24 up, down, left, or right. Also, as mentioned above, the heat source side airflow guide 24 may be configured to allow the tilt angle of the guide plate 28 to be changed in order to adjust the direction of airflow.

[0059] By providing such a heat source-side airflow guide 24, the air blown out from the heat source-side unit 20 can be blown to the rear of the air conditioning unit 1 and sent away from the space to be air-conditioned. Therefore, it is possible to suppress the reheating or recooling of the air supplied to the space to be air-conditioned due to the recirculation of the exhaust gas blown out from the heat source-side unit 20, and enable highly efficient air conditioning operation.

[0060] Referring to Figure 2, a drain pan 33 may be provided above the frame 30 and below the user-side unit 10. The drain pan 33 may be provided, for example, below the first user-side unit 10A and the second user-side unit 10B, respectively.

[0061] The drain pan 33 is a component for receiving moisture that adheres to and drips from the user-side heat exchanger 12 and housing 11 of the user-side unit 10. By providing the drain pan 33, condensation water dripping from the user-side unit 10 can be collected and drained effectively, preventing moisture from scattering into the air-conditioned space.

[0062] Furthermore, referring to Figures 2 and 4, a drain pan 34 may be provided above the frame 30 and below the heat source unit 20. The drain pan 34 is a component for receiving moisture that adheres to and drips from the heat source heat exchanger 22 and housing 21 of the heat source unit 20. By providing the drain pan 34, condensation water dripping from the heat source unit 20 can be collected and drained effectively, preventing moisture from scattering into the air-conditioned space.

[0063] Furthermore, the bottom plate (not shown) of the housing 11 of the user-side unit 10, or the bottom plate (not shown) of the housing 21 of the heat source-side unit 20, may be formed to receive all condensation water dripping from the user-side unit 10 or the heat source-side unit 20, such as drain pans 33 and 34.

[0064] Furthermore, although not shown in the illustration, a drain tank may be provided below the drain pan 33 of the user-side unit 10 or the drain pan 34 of the heat source-side unit 20 to collect the moisture that drips and collects in the drain pans 33 and 34. For example, the drain tank, which is not shown, may be movable, and a drain tank space 35 into which the drain tank can be inserted may be provided below the frame 30.

[0065] Next, examples of modifications to the embodiments of the present invention will be described in detail. Components that have the same or similar functions and effects as those in the embodiments already described will be denoted by the same reference numerals, and their descriptions will be omitted.

[0066] Figure 6 is a perspective view showing a schematic configuration of a modified embodiment of the user-side airflow guide 14 of the air conditioning system 1. As shown in Figure 6, at least one user-side airflow guide 14 may be provided with a reducer 17 and an elbow 18. The reducer 17 and elbow 18 are duct members that adjust the flow direction of the air that is cooled or heated by the user-side heat exchanger 12 (see Figure 2) and sent out by the user-side fan 13 (see Figure 2).

[0067] Specifically, the reducer 17 is a pipe fitting with different diameters, and is installed so that the airflow area is narrowed, with the larger diameter portion on the upstream side, i.e., on the housing 11 side of the user-side unit 10, and the smaller diameter portion on the downstream side, i.e., on the side of the space to be air-conditioned. In addition, the inner diameter of the outer end of the reducer 17 is formed to a fitting dimension corresponding to the outer diameter of the elbow 18, so that the elbow 18 can be easily inserted and fixed. By providing the reducer 17, the cooled or heated air can be powerfully blown toward the space to be air-conditioned at an increased airflow velocity.

[0068] The elbow 18 is, for example, a curved pipe fitting that changes the direction of airflow, such as a 45-degree elbow that changes the flow direction by 45 degrees, or a 90-degree elbow that changes the flow direction by 90 degrees. The elbow 18 is attached to the reducer 17 so that the outlet 16 is oriented in a suitable direction, such as upward, downward, left, right, or diagonally, so that the blown air is directed toward the space to be air-conditioned. By providing such an elbow 18, cooled or heated air can be efficiently supplied to a specific space that requires air conditioning. Therefore, high-performance spot air conditioning can be performed.

[0069] Furthermore, although not shown in the figures, the outer surfaces of the reducer 17 and elbow 18 may be provided with insulating members made of, for example, synthetic resin material. By covering the outer periphery of the reducer 17 and elbow 18 with insulating members that have excellent heat insulation properties, condensation during cooling operation is reduced, and highly efficient air conditioning operation with less heat loss can be achieved.

[0070] Although not shown in the diagram, the elbow 18 may be connected to the upstream side, i.e., the housing 11 side of the user-side unit 10, and the reducer 17 may be connected to the downstream side, i.e., the air-conditioned space side. The user-side airflow guide 14 may also be configured to be connected to only one of the reducer 17 or the elbow 18. Furthermore, other pipe fittings of different diameters that change the airflow area, such as the reducer 17, or other curved pipe fittings that change the direction of airflow, such as the elbow 18, may be further connected to the tip of the reducer 17 or the elbow 18.

[0071] Furthermore, although not shown in the diagram, an extension duct may be connected to the user-side airflow guide 14 to guide the conditioned air to a distant air-conditioned space. Specifically, the reducer 17 or elbow 18 may be configured to accommodate an extension duct (not shown). By attaching the extension duct to the reducer 17 or elbow 18 in this way, cooled or heated air can be efficiently supplied to a distant air-conditioned space. Therefore, high-performance spot air conditioning can be performed in large spaces.

[0072] Although not shown in the diagram, a flexible duct tube made of a flexible synthetic resin such as polyethylene or flexible polyvinyl chloride may be connected to the tip of the user-side airflow guide 14, for example, the tip of the elbow 18. With this configuration, air can be efficiently delivered to the space where cool or warm air is needed via the flexible duct tube. Thus, highly efficient spot cooling becomes possible.

[0073] As described above, the air conditioning system 1 of this invention makes it possible to improve the air conditioning capacity of the air conditioning system 1 by using two heat pump type air conditioners 2 without increasing the size of the frame 30 and thus significantly expanding the installation area of ​​the air conditioning system 1.

[0074] More specifically, compared to a conventional air conditioning system where two heat pump air conditioners are mounted on separate frames, the area of ​​the frame 30 can be reduced, thereby reducing the area occupied by the air conditioning system 1.

[0075] Furthermore, the air conditioning system 1 can cool or heat the air to a suitable temperature using two heat pump air conditioners 2, efficiently distribute it, and supply it to the air-conditioned space. In addition, the air conditioning system 1 of this invention can improve the air conditioning capacity without significantly changing the size of the user-side unit 10 and the heat source-side unit 20 from those of conventional air conditioners. Therefore, according to this invention, it is possible to provide a high-capacity air conditioning system 1 with excellent productivity.

[0076] Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. [Explanation of Symbols]

[0077] 1: Air conditioning system 2: Heat pump type air conditioner 2A: First heat pump type air conditioner 2B: Second type of heat pump air conditioner 10: User Unit 10A: First user-side unit 10B: Second user unit 11: Housing 12: User side heat exchanger 13: User-side fans 14: User-side wind direction guide 15: Inlet 16:Air outlet 17: Reducer 18: Elbow 20: Heat source side unit 20A: First heat source side unit 20B: Second heat source side unit 21: Housing 22:Heat source side heat exchanger 23: Heat source side fan 24: Heat source side airflow guide 25: Inlet 26:Air outlet 27: Guide Frame 28: Guide plate 29: Refrigerant piping 30: Stand 31 :Wheel 32: Upper unit mounting base 33: Drain pan 34: Drain pan 35: Drain tank space

Claims

1. A first heat pump type air conditioner having a first user-side unit and a first heat source-side unit, A second heat pump type air conditioner having a second user-side unit and a second heat source-side unit, An air conditioning system characterized in that the first heat pump air conditioner and the second heat pump air conditioner are mounted on a single movable frame.

2. The first user unit and the second user unit are arranged side by side vertically, with their respective air outlets facing forward. The air conditioning device according to claim 1, characterized in that the first heat source side unit and the second heat source side unit are installed back-to-back such that their respective outlets face in opposite directions, either to the left or to the right.

3. The air conditioning device according to claim 2, characterized in that at least one of the outlets of the first user-side unit and the second user-side unit is provided with a user-side airflow guide for adjusting the direction of the airflow.

4. The air conditioning device according to claim 2 or 3, characterized in that at least one of the outlets of the first heat source side unit and the second heat source side unit is provided with a heat source side airflow guide for adjusting the direction of the airflow.

5. The air conditioning device according to claim 4, characterized in that the heat source side airflow guide guides the airflow direction of the air blown out from the first heat source side unit or the second heat source side unit to be directed backward or upward.

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