JPH10281496A - Portable air conditioner - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an air conditioner that is easy to carry, can be stably installed, and can reduce manufacturing cost in a portable air conditioner such as a spot cooler. SOLUTION: The compressor 18 is arranged close to a center 81 of a housing 11 with the exhaust direction of a condenser fan 32 being the rear surface 13. Evaporator fan 22
Is arranged so that the axis faces the vertical direction, and the fan motor 23 is arranged in the lower high-temperature section 30. With such an arrangement, the center of gravity can be set substantially at the center of the housing 11, and the height of the center of gravity can be further reduced. Therefore, it is possible to provide a spot cooler which has a good balance between front and rear, left and right, is easy to carry, and can withstand vibration and shaking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable portable air conditioner such as a spot cooler, and more particularly to an air conditioner which is easy to carry and can be stably installed.

[0002]

2. Description of the Related Art FIGS. 13 and 14 schematically show an example of a conventional spot cooler and the arrangement of main devices housed inside the spot cooler 90. FIG. The spot cooler 90 includes a substantially rectangular parallelepiped housing 11 that is long in the front-rear direction, and an upper half thereof serves as a low-temperature section 20 that generates cool air by an evaporator 21 and blows out an upper front portion. Capacitor 31
Is a high-temperature section 30 for supplying outside air to the heat radiation section.
As described above, the spot cooler 90 is an integrated cooler in which the low-temperature section (cold-air generating section) 20 and the high-temperature section (radiating section) 30 are arranged inside one housing 11. Is mounted so that it can be easily moved to an appropriate place. Therefore, it is suitable for partially or short-term cooling of a semi-outdoor factory where it is difficult to cool the room at once or a container that needs air conditioning only when performing short-term work, or the like. It is indispensable for summer work.

The general structure of the conventional spot cooler 90 shown in FIGS. 13 and 14 will be described in further detail. The cooler 90 includes a spine fin type heat exchanger 19 extending from one side surface 12 a of the housing 11 to the rear surface 13.
The upper part has a function as an evaporator 21 for cooling the outside air and introducing it into the housing, and the lower part has a function as a condenser 31 for cooling the compressed refrigerant. In the cooling cycle of the spot cooler 90, a refrigerant such as R22 is used. In the low-temperature section 20 provided with the evaporator 21, the outside air is cooled by the evaporator 21 to become cool air and blows out from the outlet 7 through the evaporator fan 22. Is done.
The refrigerant evaporated by the evaporator 21 is compressed by the compressor 18 installed inside the housing 11 and sent to the condenser 31. In the high-temperature section 30 provided with the condenser 31, the refrigerant in the condenser 31 is cooled by the outside air sucked by the condenser fan 32, and the outside air whose temperature has increased through the condenser 31 is directly supplied to the housing 11 by the condenser fan 32.
Released to the outside. The cooled refrigerant is expanded again through a capillary or an expansion valve and then re-evaporated.
And repeat the above process.

In the high temperature section 30, a drain tank 41 is provided.
If the drain condensed by the evaporator 21 cannot be completely evaporated by the condenser 31 therebelow, it is guided to the drain tank 8 from a drain pan (not shown) provided below the condenser 31 and collected. In the spot cooler 90, these devices, piping and a control device for connecting the devices are housed inside the housing 11, and the compressor 18, the evaporator fan 21 and the like are provided.
Motor and condenser fan 33 for driving the
By supplying only the electric power which is the power source of the motor 33 for driving the air, the cool air can be obtained from the outlet 7 anytime and anywhere. Further, as means for moving the spot cooler 90, a caster 5 is provided on the bottom surface 15b, and a handle 6 is provided on the upper surface 15a of the housing. The spot cooler 90 of this example is provided with two handles 6 at the front in order to prevent the housing 11 from tilting to the side of the front surface 14 where the compressor 18 is arranged when being carried by the handle 6.

[0005]

The outline of a typical spot cooler as a portable air conditioner has been described. However, the portable air conditioner can be downsized like other electric appliances.
Weight reduction, high efficiency and low cost are important issues. In addition, a portable air conditioner needs to be easily movable. On the other hand, in a place where the air conditioner is installed, it is stable against a slight roll or vibration, and does not fall down even if touched by a user. Stability and earthquake resistance are required. Furthermore, in recent years, there has been a demand for a portable air conditioner that is smart in design, and it is desirable to be able to adopt an exterior or the like that takes into account a design that matches the environment in which the air conditioner is installed, such as a work or rest area. .

Accordingly, an object of the present invention is to provide a portable air conditioner which can solve these problems related to the configuration of the portable air conditioner, and which is easier to carry than a conventional air conditioner. It is another object of the present invention to provide a portable air conditioner capable of efficiently supplying cold air to a cooling object. It is also an object of the present invention to provide a portable air conditioner that is stable during transportation and at the installation location, can be reduced in size and weight, and can adopt a smart design.

[0007]

For this reason, the inventors of the present invention completely reviewed the configuration of a conventional spot cooler in which the configuration of a separate type outdoor installation unit was adopted in a high-temperature section almost as it is, and An air conditioner equipped with equipment layout and structure suitable for an air conditioner has been realized. First, in order to be portable, it is essential that the air conditioner be easy to hold or move. If the load is concentrated on one of the front and rear sides, the load cannot be evenly lifted, and the posture during movement is not stable. Therefore, in the portable air conditioner of the present invention, the arrangement of the compressor, which is one of the heaviest devices in the system, and the motors for the heavy-weight evaporator fan and the condenser fan are arranged. Focusing on the compressor, the motor for the evaporator fan and the motor for the condenser fan are arranged on the opposite side of the compressor, so that an air conditioner with good weight balance can be realized so that it can be lifted with one handle at the center of the housing. I have. That is, a low-temperature section provided with an evaporator fan for discharging cold air cooled by an evaporator from an upper outlet of the present invention, and a high-temperature section provided with a condenser fan for discharging exhaust gas that has cooled a condenser. In a portable air conditioner having a housing formed above and below, a compressor for compressing and sending refrigerant from an evaporator to a condenser is arranged in front of the housing, and a motor and a condenser fan for an evaporator fan are arranged behind the housing. It is characterized in that a motor for the motor is arranged. By adopting such an arrangement, it is possible to greatly improve the front and rear weight balance, and when moving with the casters installed at the lower part of the housing, the load balance on the front and rear casters is improved, so it is easy You can go straight. Further, when moving using the handle provided at the upper part of the housing, it is possible to carry the paper in a well-balanced manner with one handle provided at the center. Therefore,
It is no longer necessary to arrange a plurality of handles at eccentric positions in order to balance back and forth as in a conventional spot cooler.

In particular, by disposing a compressor, which is one of the heaviest equipment among the equipment constituting the refrigerant circulation system, in the vicinity of the center of the housing, the load distribution on the front and rear casters is further averaged. It is possible to provide an air conditioner that is easy to change directions.
Further, even when the handle is provided at the center, since the load is not dispersed back and forth, it can be lifted lightly, the direction can be easily changed, and the occurrence of shaking or vibration can be prevented.

Further, in the portable air conditioner of the present invention, the outlet is installed in front of the housing, and the condenser fan is installed facing the rear of the housing. As a result, the condenser fan moves rearward, so that the arrangement interference with the compressor arranged near the center can be avoided. The condenser fan may be moved rearward while being directed to the side, but the housing extends forward and backward and becomes large. Therefore,
By changing the direction of the condenser fan from the side of the housing to the rear, interference is prevented in the arrangement of the compressor and the condenser fan near the center, and the housing can be housed in a more compact housing. In addition, by setting the outlet of the cool air forward, the main blow-out direction of the cool air and the exhaust direction are different by 180 degrees. Thereby, it is possible to prevent the hot exhaust from affecting the user to which the cool air is supplied, and it is easy to set the direction of the air conditioner so that the exhaust is smoothly discharged from the building or the like. .

Further, by arranging the motor for the compressor, the motor for the evaporator fan and the motor for the condenser fan in the high temperature section, the compressor and the motor can be cooled by the condenser fan. In the evaporator fan, the motor can be installed in the high-temperature section below the low-temperature section by installing the drive shaft in the vertical direction. This collects all heavy objects in the hot compartment below the housing,
The center of gravity of the air conditioner is lowered, and an air conditioner with high seismic resistance that can be installed very stably and hardly falls down can be provided.

In this way, by collecting and arranging heavy objects in the high-temperature section, these heavy objects can be supported by the dedicated base frame. Therefore, since almost no load is applied to the outer peripheral surface of the housing, a structure different from the base frame is used.
For example, it can be composed of an exterior panel made of plastic or the like. That is, the housing is divided into a base frame on which a motor for a compressor, an evaporator fan and a motor for a condenser fine are mounted, and a substantially rectangular parallelepiped outer panel mounted on an upper portion of the pace frame. The compartment and the hot compartment can be covered.

As described above, it is desirable to arrange the compressor, which is one of the heaviest devices in the system, near the center of the base frame. Further, the drain can be smoothly collected by disposing the drain tank extending forward and backward below the base frame. Also,
There is no need to provide a space to arrange the drain tank in a plane with the compressor. Therefore, the front and rear dimensions of the housing can be reduced, and the portable air conditioner can be compactly assembled. In addition, one of the heavy
An evaporator and a condenser can be attached, and the air conditioner can be made compact by employing a heat exchanger in which the evaporator and the condenser are integrated like a spine fin type.

By adopting such an arrangement,
All heavy objects are supported by the base frame, and almost no load is applied to the exterior panel.Therefore, the base frame is made of high-strength metal, and the exterior panel does not require much strength and is easy to process. It can be composed of a resin such as a suitable plastic. For this reason, it becomes easy to form the exterior panel according to various designs, and it is possible to provide a portable air conditioner having a smart design according to the installation area and purpose. In addition, since most of the heavy objects are compactly arranged on the base frame and can be supported by the base frame, the number of supporting members can be significantly reduced, and assembly during manufacturing can be facilitated. Furthermore, since the exterior panel can be almost completely made of resin, the weight can be reduced and the manufacturing cost can be significantly reduced. In addition, when the exterior panel is removed, the main equipment mounted on the base frame appears, so that maintenance is facilitated.

[0014] Further, by making the exterior panel resinous, it is possible to detachably attach a large-diameter caster to both the base frame and the exterior panel on the axle extending laterally from the exterior panel. It is possible to provide a portable air conditioner that is easy to operate.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an outline of a spot cooler 10 as a typical example of a portable air conditioner according to the present invention. The spot cooler 10 of this example includes a substantially rectangular parallelepiped housing 11 that is long in the front and rear directions, and a blowout unit 60 that blows cool air is mounted on the front surface 14 side of the upper surface 15a. A caster is mounted on the lower portion 15b of the housing, and the caster 5a mounted on the front surface 14 is small and movable in the moving direction. The caster 5b mounted on the rear surface 13 side has a large diameter housing 11
Are mounted on the side surfaces 12a and 12b. As shown in FIG. 2, a heat exchanger 19 is visible on one side surface 12a of the housing 11, and the portion of the heat exchanger 19 serves as an outside air intake. Spot cooler 10 of this example
Adopts a spine fin type heat exchanger 19 in which an evaporator 21 and a condenser 31 are integrated vertically, so that the upper side of the side surface 12a becomes an intake port 29 for outside air for cool air, and the lower side is for heat radiation. It is an outside air intake 39. Also, the rear surface 13 of the housing 11
An exhaust port 38 for exhausting outside air for heat radiation is provided, and a condenser fan for exhaust is provided. In the spot cooler 10 of this example, the housing 11
The fan cover 37 of the condenser fan is provided so as to slightly protrude from the rear surface 13 of the housing 11 so as to shorten the overall length of the condenser fan. In addition, a drain tank attaching / detaching port 49 is provided below the exhaust port 38 on the rear surface 13.

FIGS. 3 to 7 schematically show the internal structure of the housing 11 of the spot cooler 10 of the present embodiment, focusing on the compressor 18, the evaporator fan 22 and the motor 23, and the condenser fan 32 and the motor 33. In the drawings shown below, only the arrangement of the main components of the spot cooler is taken out and shown. However, the pipes, valves, cables, and the like for connecting these components are also housed in the housing 11. Of course, various known systems can be applied to their arrangement and the like. FIG. 3 shows a main arrangement inside the housing using a cross-sectional view in the front-rear direction of the housing 11, and FIG.
FIG. 4 is a cross-sectional view in the left-right direction as viewed from the front of FIG.
Indicates a state in which the housing 11 is viewed from the rear. Further, FIG. 5 shows an arrangement of main devices by expanding the inside of the housing 11. As can be seen from these figures, in the spot cooler 10 of this example, the heat exchanger 19 having an evaporator 21 on the upper side and a condenser 31 on the lower side is arranged facing the side surface 12a of the housing 11, and the inside of the housing 11 is The upper part is a low-temperature section 20 for discharging the outside air cooled by the evaporator 21 from the blowing unit 60, and the lower part is a high-temperature section 3 for cooling the condenser 31 with the outside air and radiating heat.
It is 0. The housing 11 includes the compressor 18, the motors 23 and 33, and the heat exchanger 1.
Frame 9, a plastic exterior panel 50 installed thereon, and a rear surface 13
And a rear panel 59 that constitutes a portion of the condenser fan cover. In the following description, the housing 11, or each part of the housing, the base frame 40, the exterior panel 50, and the rear panel 59 will be described.

As shown in FIG. 6, the low-temperature section 20 is partitioned by a high-temperature section 30 and a partition plate (separator) 28. The separator 28 has an evaporator fan 22 and a fan. A casing 24 is attached. A sirocco fan is employed as the evaporator fan 22 of the present example, and is attached to the rear surface 13 side from the center of the separator 28. Further, the evaporator fan 22 is attached to the separator 28 so that the rotating shaft is oriented vertically, and the driving end of the rotating shaft projects through the separator 28 to the high-temperature section 30, and the tip for the evaporator fan is further provided. Motor 23
Is connected. Therefore, the fan casing 24 also
The suction port 24a and the discharge port 24b are arranged side by side in the front and back direction. Such an evaporator fan 22
Accordingly, the outside air cooled by the evaporator 21 is pressurized and becomes cool air, and is blown out from the blowing unit 60 provided on the upper surface 15 a of the exterior panel 50 of the housing 11.

In the vicinity of the suction port 24a of the fan casing 24, the casing 2 on the opposite side of the outside air intake port 29 is provided.
A guide vane 25 is attached along the outer peripheral portion 24c of the fourth. The guide vanes 25 weaken the flow of air flowing outside the casing 24, and can regulate the flow of air near the suction port 24a. For this reason, generation of a vortex at the suction port 24a is suppressed, and a sufficient air volume can be obtained by the evaporator fan 22.

The cool air pressurized by the evaporator fan 22 is supplied to the blowing unit 60 from the discharge port 24b, and is discharged from two blowing ports 64 provided on the front of the blowing unit 60. The blowout unit 60 is detachably attached to the attachment hole 26 of the upper surface 15 a of the exterior panel 50 via a socket 61. The blowing unit 60 includes a blowing chamber 63 in which a separator vane for distributing cold air to the two blowing ports 64 substantially equally is provided.
3 is connected to the socket part 61 by a duct 62 extending in the vertical direction. Therefore, the cool air is blown from an appropriate height extending upward from the housing 11 of the spot cooler 10, so that the space to be air-conditioned can be efficiently cooled. In addition, the outlet 64
Are provided with vanes that can be set by changing the blow direction of the cool air in the front, rear, left and right directions, so that the direction of the cool air can be adjusted only by moving the blow outlet 64. In the spot cooler 10 of this example, such a blow-out unit 60 can be attached to and detached from the housing 11, so that it can be handled in a low state with the blow-out unit 60 removed during storage or movement. Therefore, the storage efficiency is high, and interference with obstacles during movement is less likely to occur.

On the separator 28, a control box 65 is disposed behind the fan casing 24. Inside the control box 65,
An electric component 66 that distributes electric power obtained via the power cable 67 to the compressor, the motor, and the like and controls those devices is housed. Therefore, the spot cooler 10 of this example can generate cold air anytime and anywhere as long as power can be supplied.

The high-temperature section 30, which is separated from the low-temperature section 20 by the separator 28, is placed facing the side surface 12a of the housing 11 (exterior panel 50), as shown in FIG. The outside air is supplied to the condenser 31 from the intake port 39, and the outside air whose temperature has increased is discharged backward from the rear surface 13 of the housing 11. For this reason, the condenser fan 32 is installed facing the exhaust port 38 of the rear panel 59. A propeller fan is adopted as the condenser fan 32 of the present example, and a driving shaft extends inside the housing, and the motor 33 is arranged with respect to the fan 32 so as to be inside the housing. Also, the spot cooler 1 of this example
In the case of 0, a part of the fan cover 37 projects outward from the rear panel 59, and the exterior panel 50 (housing 11)
Are reduced in the front-rear direction.

High temperature section 3 of spot cooler 10 of the present embodiment
Further, at 0, a compressor 18 and an accumulator 17 which compress the refrigerant from the evaporator 21 and supply the compressed refrigerant to the condenser 31 are arranged. The compressor 18 and the accumulator 17 are unitized as a single unit, and are attached to the base frame 40 slightly ahead of the center. In the high-temperature section 30, a motor 23 for an evaporator fan and a motor 33 for a condenser fan are also arranged, and these are also cooled by the outside air introduced by the condenser fan 32.

On the rear side from the center of the base frame 40, a support frame 4, which is formed in a substantially H-shape in the vertical direction to support these motors 23 and 33, is provided.
1 is attached. 8, the base frame 40 and the support frame 41 are shown as enlarged.
Is formed of a sufficiently strong metal member such as a steel plate. A motor 33 for a condenser fan is mounted on the rear panel 41b of the support frame 41 so that the axis is horizontal. The motor 23 for the evaporator fan is attached to the intermediate panel 41c connecting the panel 41a so that the axis is vertical.

The upper end of the H-shaped support frame 41 extends upward so as to support a separator 28 that supports the evaporator fan 22, the fan casing 24, and the like. It is designed to support the load of equipment. A support bar 42 extending vertically in parallel with the support frame 41 is attached to the front of the base frame 40. The support bar 42 receives a load in front of the separator 28, and
Can be transmitted to the base frame 40 in a well-balanced manner.

As shown in FIGS. 3 to 7, the spot cooler 10 of the present embodiment is one of the heaviest devices among the devices housed in the housing 11 of the spot cooler to generate cool air. Compressor 18
It is arranged on the side of the front surface 14 from the center 81 of the rectangular parallelepiped housing 11 slightly longer from the front surface 14 to the rear surface 13.
The motor 23 for the evaporator fan and the motor 33 for the condenser fan, which hit heavy objects among the devices housed in the housing 11, are arranged on the rear surface 13 side of the center 81 of the housing 11. In this way, by arranging the heavy objects in the front and rear as evenly as possible, the center of gravity of the spot cooler 10 can be set substantially at the center 81 of the housing 11 while maintaining the front and rear weight balance. Therefore, the spot cooler 1 of this example
0 can be lifted in a well-balanced manner by the handle 6 provided at the center 81 of the upper surface 15a of the housing.
In addition, since the casters 5a and 5b installed on the lower portion 15b of the housing are also applied with a substantially uniform load, the load can be well balanced and the straight can be moved smoothly.

In particular, in the spot cooler 10 of the present embodiment, the compressor 18 is connected to the center 8 of the housing 11 in the front-rear direction.
1, and the motors 23 and 33 are also arranged so as to approach the center 81 substantially. Therefore, heavy objects are collected in the vicinity of the center of gravity, and the load balance applied to the front and rear casters 5a and 5b is averaged, which facilitates movement. Also, when the direction is changed, since heavy objects are concentrated between the casters 5a and 5b, the course can be changed stably with a small force. Furthermore, when carrying the product with the handle, it can be lifted lightly, the direction can be easily changed, and the occurrence of shaking or vibration can be reduced.

Further, an evaporator fan 22 is arranged so that the axis is vertical, and a motor 23 for the fan is installed in a high-temperature section 30 below the fan 22.
Therefore, the position of the center of gravity of the spot cooler 10 can be lowered, and the spot cooler 10 can be installed very stably with a large falling angle. Further, as shown in FIGS. 4 and 7,
Compressor 18, fan motors 23 and 33
Are arranged substantially at the center 82 of the housing 11 in the left-right direction. Also, in particular, the compressor 18
Is located at a position slightly eccentric to the opposite side of the heat exchanger 19 from the center 82. In the left-right direction, consideration is given to the arrangement such that the center of gravity including the heat exchanger 19 is substantially at the center of the housing. Further, heavy objects such as the compressor 18 are concentrated near the center of gravity. For this reason, the balance between left and right is very high. For example, while the falling angle required in the standard is 15 °, in the spot cooler 10 of this example, the falling angle in the left and right direction is 35 to 37 °, which is more than twice the standard. An angle can be secured, and a fall angle of 55 to 58 in the front-rear direction, which is about four times the standard, can be secured. Therefore, it can be understood that the spot cooler 10 having a very stable posture and high earthquake resistance can be provided by employing the arrangement of the present invention. As described above, the spot cooler 10 of the present embodiment is easy to carry, has high stability after being positioned and installed as well as during transportation, and has extremely excellent characteristics as a portable air conditioner. ing.

In the spot cooler 10 of the present embodiment, the evaporator fan 22 is mounted in the vertical direction and the condenser fan 32 is mounted on the rear surface 13 in order to arrange the compressor 18 and the fan motors 23 and 33 as described above. The exhaust direction is set to the rear side of the housing 11. For example, in an air conditioner such as an outdoor unit of a separate type air conditioning system in which one direction is longer than the other so that a large heat exchanger can be installed while securing a heat transfer area, the exhaust direction is wide (heat transfer surface). Are set in a direction orthogonal to. Also in the conventional spot cooler 10 shown in FIGS. 13 and 14, the same wind direction as that of the outdoor unit is adopted. In contrast,
The spot cooler 10 according to the present embodiment includes a condenser fan 3
2 is directed toward the rear surface 13 so that the exhaust direction is parallel to the heat transfer surface. By changing the exhaust direction in this way, the spot cooler 10 of the present example can install the compressor 18 almost at the center of the housing while avoiding interference in arrangement between the condenser fan 32 and the compressor 18. A motor 23 for the evaporator fan can also be located approximately in the center of the hot section 30 of the housing.

Further, by changing the exhaust direction,
The spot cooler 10 of the present embodiment has greatly improved air conditioning performance. As shown in FIG. 9A or FIG. 9C, when supplying cool air using a spot cooler,
In most cases, cool air is blown forward toward the front provided with the air outlet, and this direction is away from both the intake side 12a and the exhaust side, so that efficient air conditioning can be performed. However, the conventional spot cooler 9 shown in FIG.
In the case of 0, since the exhaust direction is directed to the side, the cool air is blown to the front user 89 and the exhaust gas having a high temperature is blown in a right angle direction. Therefore, when there is an obstacle such as a wall in the exhaust direction, or when the surrounding wind direction is directed toward the user 89, the exhaust air is also likely to flow in the direction of the user 89, and the user 89 receives warm air as well as cool air. For this reason, the effect of air conditioning may be reduced. Further, as shown in FIG. 9 (b), considering the case where cold air is supplied to a partially open factory or the like, if the front of the spot cooler 90 is directed toward the factory in order to introduce the cool air into the factory, the exhaust air will be exhausted. It becomes difficult to direct the direction to the outside 88. On the other hand, as shown in FIG. 9C, in the spot cooler 10 of this example, the directions of the cool air and the exhaust air are 180 °.
Exhaust gas is not emitted toward the user 89 because it is different, and as shown in FIG. 9D, exhaust gas can be directed to the outside 88 of the factory while supplying cool air into the factory. As described above, the spot cooler 10 of the present embodiment adopts an air flow in which the outside air is sucked in from the side surface and the cooled air is discharged forward, and the high-temperature exhaust gas is discharged rearward. A center of gravity is provided substantially at the center to facilitate transportation, secure a stable posture, and efficiently supply and exhaust cold air.

Further, the spot cooler 10 of the present embodiment
The heavy objects such as the compressor 18 and the motors 23 and 33 are collected and arranged in the high-temperature section 30 so that all of these heavy objects can be supported by the base frame 40. Further, as the heat exchanger 19, a type in which the evaporator 21 and the condenser 31 are vertically integrated is adopted, and the evaporator 21 and the condenser 31 are supported by the base frame 40 by disposing the evaporator 21 and the condenser 31 facing the side surface 12a. Can be. Further, the load of the separator 28 in the low temperature section 20 can be supported by the base frame 40 by the H-shaped support frame 41. As described above, since the load of most of the devices constituting the spot cooler 10 can be supported by the base frame 40, almost no load is applied to the exterior panel 50 constituting the outside of the housing 11. Therefore, the exterior panel 50
Can be made of a resin such as plastic which does not require much strength and is easily processed, and a spot cooler having a smart design suitable for an installation area or purpose can be realized. In addition, since the exterior panel 50 is made of resin, the total weight of the spot cooler 10 can be reduced. In addition, since most of the heavy objects are compactly arranged on the base frame 40, the supporting members and the like are also greatly reduced. Can be reduced. Accordingly, the spot cooler 10 of the present embodiment is lightened in its entirety, and a portable spot cooler can be realized in this aspect as well. In addition, since the structure of the spot cooler 10 is simplified and the number of parts is reduced, the assembling becomes easy and the manufacturing cost can be reduced. In addition, as shown in FIG. 5, when the exterior panel 50 is removed, the main device attached to the base frame 40 appears, so that maintenance after manufacturing and replacement of the device can be easily performed.

The base frame 40 of the present embodiment has a two-layer structure as shown in an exploded view in FIG. 5, and has a compressor 18 and motors 23 and 33 at the upper part, and a separator 28 and a low-temperature section separator. The structural layer 40a that can support the heat exchanger 19, and the drain tank 4
A drain collection layer 40b for collecting the drain is provided in parallel with 8. Thus, the base frame 40 is
With the layer structure, a layer supporting a heavy object such as the compressor 18 and the drain tank 48 can be arranged vertically. Therefore, a portion for securing the strength of the base frame 40 can be formed in a planar configuration, and the base frame 40 can be formed in a simple configuration. Further, since there is no need to arrange the heavy object and the drain tank 48 in a plane, the drain tank 48 having a sufficient capacity can be installed even if the length of the housing 11 in the front-rear direction is reduced. Further, by arranging the drain tank 48 in the lowermost layer, it is easy to secure a gradient for collecting the drain from the heat exchanger 19 and the like, and the drain can be reliably collected. Further, since the drain tank 48 has a shape extending in the front-rear direction of the base frame 40, the position of the center of gravity of the spot cooler 10 in the front-rear direction does not change even if the drain is collected, and there is no obstacle to the movement.

The total weight of the spot cooler 10 of the present embodiment, including the weight of the external panel 50, is transmitted to casters 5a and 5b for moving the spot cooler 10 attached to the base frame 40. The first caster 5a provided in front of the base frame 40 includes:
The angle can be freely changed with the traveling direction with a small diameter. On the other hand, the second caster 5b provided behind the base frame 40 has a large diameter and is attached to the side surface of the base frame 40 so that the angle does not change with respect to the traveling direction.

Since such a large-diameter caster 5b has a small curvature, it has a small resistance when rotating and moving, and can be moved with a small force. Furthermore, since it has a large diameter, it has good overcoming of unevenness and is a caster suitable for the portable spot cooler 10 of this example. The spot cooler 10 of the present embodiment is configured such that the advantage of the large-diameter caster 5b can be utilized without increasing the center of gravity by attaching such a large-diameter caster 5b to the side surface.
Such a large-diameter caster 5b can be provided at a low price by using a plastic material having high impact resistance such as ABS resin. In the spot cooler 10 of the present example, an axle is integrally formed on the caster 5b side.
By extending the receiving shaft even from the exterior panel 50 of the same material to increase the contact area, it is possible to prevent a load from being concentrated or a local abrasion to occur, and to construct a more durable transfer system. I have.

FIG. 10 is an exploded view of a portion to which a large-diameter caster 5b employed in the spot cooler 10 of this embodiment is attached. Also, FIG.
The assembled state of b is shown using a cross section. The large-diameter caster 5b of the present example is
1 and an axle 72 extending from the center thereof, and a groove 74 for fitting a C-ring 73 for attaching the axle to the tip of the axle 72 is provided. Furthermore, the axle 7 of this example
2 is provided with a washer 75 that rotates in conjunction with the axle 72 inside the C-ring 73, and a groove 76 for fitting a claw 75 a of the washer 75 is provided in the axial direction of the axle 72. Have been.

A hollow receiving shaft 51 extending outward in the horizontal direction is provided on the lower rear side of the exterior panel 50 to which the casters 5b are attached.
1 can be fixed in position with the receiving hole 45 at the rear of the base frame 40. Base frame 4
0 is supported by the casters 5b, so that the base frame 40 and the exterior panel 50
It is fixed using a plurality of screws 79 in the vicinity of 1. When assembling the caster 5b of this example having such a configuration,
As shown in FIG. 11, the axle 7 extending from the caster 5b
2 is inserted into the receiving shaft 51 extending from the exterior panel 50,
The casters 5b are rotatably attached to the exterior panel 50 and the base frame 40. And the receiving shaft 51
And the axle 72 are combined to receive the load, so that a large contact area for transmitting the load can be secured.
For this reason, it is possible to prevent the load from being concentrated when the caster 5b is moved, or the abrasion of the axle 72 or the like from being abruptly deteriorated due to partial wear.

Further, the caster 5b of the present embodiment has a C ring 73 which is fixed so that the caster 5b can be attached and detached.
, A washer 75 is provided which rotates together with the axle 72. Therefore, even when the axle 72 rotates, the C ring 73 does not contact the base frame 40, and is protected by the washer 75 that rotates together with the axle 72, that is, the C ring 73. Therefore, the caster 5b
When the C ring 73 is rotating, the base frame 4
The casters 5b can be reliably attached to the base frame 40 and the exterior panel 50 without touching the caster 5 and coming off. When removing the exterior panel 50 from the base frame 40, the casters 5b must be removed in advance.
By removing the caster 3, the caster 5b can be easily removed.

As the large-diameter caster, it is also possible to adopt a type in which the caster is fitted into the exterior panel 50 and the base frame 40 with one touch as shown in FIG. However, when the exterior panel 50 is removed from the base frame 40 for maintenance or the like, it is necessary to break the axle portion, which makes reuse difficult.
Therefore, it is desirable to adopt a mounting method using a C-ring 73 as shown in FIG. Of course, not only the C ring 73 but also an appropriate jig that can be detachably fitted inside the axle 72 can be used.

As described above, the spot cooler 10 of this embodiment is
Is easy to move, can maintain a stable posture,
Further, it is possible to efficiently supply cold air. Also,
The spot cooler 10 of the present example is lighter as a whole, can be manufactured and provided at a low price, and has excellent characteristics as a portable air conditioner.

In the above description, a spot cooler 10 that cools and supplies outside air as a typical portable air conditioner is described.
Although the present invention has been described as an example, it is easy to add a heating function by providing an electric heater, a heat pump, and the like, and the present invention is not limited to an air conditioner having only a cooling function. Of course, it is also possible to apply to a portable air conditioner having a heating function.

[0040]

As described above, in the portable air conditioner of the present invention, a heavy object such as a compressor or a motor is arranged so that the center of gravity is substantially at the center of the housing. We try to keep it as low as possible. Therefore, when moving with a handle or a caster, no inclination or shaking occurs, and the arrangement is easy to carry. In addition, since the front and rear and left and right fall angles are large and stable against roll and vibration, the air conditioner which does not fall down to the extent that the user touches a little and has high earthquake resistance can be provided. .

The air conditioner of the present invention employs an arrangement in which the direction of exhaust air is different from the direction of cold air by 180 ° in association with the collection of compressors and fan motors in the center. For this reason, it is possible to prevent a trouble that the exhaust goes around to the cool air side, and it is possible to improve the exhaust characteristics, so that a portable air conditioner with higher cooling efficiency can be provided.

Further, by employing an arrangement in which the heavy objects are concentrated at the center, the heavy objects can be collectively supported by the base frame, and the size and weight can be reduced. A low-cost, high-performance portable air conditioner can be provided. In addition, since the exterior panel can be formed of a resin such as plastic, the degree of freedom in design can be improved, and a portable air conditioner designed to match the environment in which the air conditioner is installed, such as a work area or a rest area, can be provided. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of a spot cooler according to the present invention.

FIG. 2 is a perspective view of the spot cooler shown in FIG. 1 as viewed from the opposite side.

FIG. 3 is a sectional view showing a schematic configuration of the spot cooler shown in FIG. 1 as viewed from a side.

FIG. 4A is a cross-sectional view showing a schematic configuration of the spot cooler shown in FIG. 1 as viewed from the front, and FIG.
FIG. 4 is a diagram showing a state viewed from behind.

FIG. 5 is a developed perspective view showing a schematic configuration of the spot cooler shown in FIG. 1 in a developed manner.

FIG. 6 is a plan view showing a configuration of a low-temperature section of the spot cooler shown in FIG. 1;

FIG. 7 is a plan view showing a configuration of a high-temperature section of the spot cooler shown in FIG. 1;

8 is a diagram showing an arrangement of the spot cooler shown in FIG. 1 on a base frame.

9A and 9B are diagrams showing flows of cold air and exhaust air of the spot cooler shown in FIG. 1 in comparison with a conventional spot cooler, and FIGS. 9A and 9B show states of cold air and exhaust air of the conventional spot cooler. 9 (c) and (d) are views showing the state of the cool air and the exhaust air of the spot cooler shown in FIG.

FIG. 10 is a developed view showing a structure for attaching a large-diameter caster of the spot cooler shown in FIG. 1;

11 is a sectional view showing a state where the casters shown in FIG. 10 are attached.

FIG. 12 is a sectional view showing another caster plan for the caster of FIG. 11;

FIG. 13 is a sectional view showing a schematic arrangement of a conventional spot cooler in a plan view.

14 is a cross-sectional view showing a schematic arrangement of the spot cooler shown in FIG. 13 as viewed from the side.

[Explanation of symbols]

 5. Casters 6. Handles 10. Spot cooler 11. Housing 12. Side of housing (exterior panel) 13. Rear of housing 14. Front of housing 15a. Top of housing 15b. Lower surface of base frame) 17 ・ ・ accumulator 18 ・ ・ compressor 19 ・ ・ heat exchanger 20 ・ ・ low temperature section 21 ・ ・ evaporator 22 ・ ・ evaporator fan 23 ・ ・ motor for evaporator fan 24 ・ ・ evaporator fan casing 25 ・ guide Vane 29 ・ ・ Air intake for evaporator 30 ・ High temperature compartment 31 ・ Condenser 32 ・ Condenser fan 33 ・ Motor for condenser fan 37 ・ ・ Fan cover 38 ・ ・ Exhaust vent 39 ・ ・ Air intake for condenser 4・ ・ Base frame 40a ・ ・ Structure layer 40b ・ ・ Drain recovery layer 41 ・ ・ Support frame 45 ・ ・ Receiving hole for caster 48 ・ ・ Drain tank 49 ・ ・ Drain tank outlet 50 ・ ・ Exterior panel 51 ・ ・ Caster・ Receiver shaft 59 ・ ・ Rear panel 60 ・ ・ Blow-out unit 65 ・ ・ Control box 71 ・ ・ Caster disc 72 ・ ・ Axle 73 ・ ・ C ring 75 ・ ・ Washer 81 ・ ・ Center (center) in the front and rear direction of the housing 82 ・・ Center of the housing in the left-right direction 90 ・ ・ Conventional spot cooler

Claims (11)

[Claims] 1. A low-temperature section provided with an evaporator fan for discharging cold air cooled by an evaporator from an upper outlet, and a high-temperature section provided with a condenser fan for discharging exhaust gas cooled by a condenser are vertically arranged. A compressor for compressing and sending a refrigerant from the evaporator to the condenser is disposed in front of the housing, and a motor for the evaporator fan and a condenser fan for the condenser fan are arranged behind the housing. A portable air conditioner, wherein a motor is arranged. 2. The portable air conditioner according to claim 1, wherein the compressor is disposed near a center of the housing. 3. The portable air conditioner according to claim 1, further comprising at least one of a caster installed at a lower part of the housing and a handle installed at an upper part of the housing. 4. The portable air conditioner according to claim 1, wherein the outlet is installed in front of the housing, and the condenser fan is installed rearward of the housing. apparatus. 5. The portable air conditioner according to claim 1, wherein the compressor, a motor for an evaporator fan, and a motor for the condenser fan are arranged in the high-temperature section. 6. The housing according to claim 5, wherein
The compressor, a base frame to which a motor for an evaporator fan and a motor for the condenser fan are attached, and a substantially rectangular parallelepiped exterior panel attached to an upper portion of the pace frame. A portable air conditioner characterized by covering a compartment and a high-temperature compartment. 7. The portable air conditioner according to claim 6, wherein the compressor is disposed near a center of the base frame. 8. The portable air conditioner according to claim 6, wherein a drain tank extending in the front-rear direction is arranged below the base frame. 9. The portable air conditioner according to claim 6, wherein the evaporator and the condenser are supported by the base frame and are arranged facing one side of the housing. 10. The portable air conditioner according to claim 6, wherein the base frame is made of metal, and the exterior panel is made of resin. 11. The device according to claim 10, further comprising first and second casters disposed before and after a lower portion of the housing, wherein at least one of the first and second casters is located at a side of the exterior panel. A portable air conditioner characterized by being a large-diameter caster removably attached to both the base frame and the exterior panel with respect to an axle extending in a direction toward the vehicle.