JPS6120439Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a spot cooler for air conditioning only a part of a wide area.

This type of cooler is generally designed to discharge cold air at a relatively fast speed from a single discharge duct with a diameter of about 50 to 200 mm, and to cool areas relatively far away from the cooler body. . Therefore, when cooling the immediate vicinity of the cooler main body, there is a problem in that even if the direction of discharge of cold air from the discharge duct is changed, the cold air only hits a small part of the air due to the diameter of the duct. In addition, when cooling a nearby area, it is possible to reduce the discharge speed of cold air from the discharge duct, but with this structure, reducing the discharge speed will reduce the air volume. Cooling capacity decreases.

There is also the problem that if the human body is continuously exposed to cold air at a constant speed, not only will the sensation of cooling become numb, but the human body will also be adversely affected physiologically.

Therefore, an object of the present invention is to provide a spot cooler that can always provide an appropriate cooling effect, whether the object to be cooled is located at a long distance or a short distance.

Furthermore, the purpose of this invention is to discharge all of the cold air from the outlet with a narrow discharge cross-sectional area when the cooling target is far away, and to discharge most of the cold air from the outlet with a wide discharge cross-sectional area when the object is close to the target. It is an object of the present invention to provide a spot cooler which is provided with two discharge ports and which can be used by substantially switching between the discharge ports.

Another object of the present invention is to provide a spot cooler in which the ratio of cold air discharged from the two discharge ports can be arbitrarily selected.

Another object of the present invention is to provide a spot cooler that can periodically and automatically change the ratio of cold air discharged from the two discharge ports.

Examples will be described below with reference to the drawings.

First, in Fig. 1, the spot cooler body 1
A blower 3 and a refrigerant evaporator 4 are arranged in the air passage 2 formed in the air passage 2, so that surrounding air can be sucked into the air passage 2 from an air inlet 5 at the bottom of the main body 1 and cooled. A discharge duct 6 is connected to the upper end of the air passage 2, and the tip of the discharge duct 6 serves as a first discharge port 7 having a narrow cross-sectional area. Also, wind path 2
An intermediate portion thereof is opened above the air inlet 5 as a second discharge port 8 having a wide discharge cross-sectional area. This second discharge port 8 is provided with several rotatable louvers 9. These louvers 9 substantially open and close the second discharge port 8 depending on the rotation angle.

Note that 10 is a compressor, 11 is a refrigerant condenser, and 28 is a condenser blower.

In such a spot cooler, when the louver 9 closes the second discharge port 8, all the cold air is discharged from the first discharge port 7 at high speed, so a strong wind is obtained and it is possible to cool a distant place. When the louver 9 is half-opened, cold air is discharged from both the first and second discharge ports 7 and 8, and because the discharge cross-sectional area of the second discharge port 8 is particularly large, the discharge air velocity is increased overall. It weakens and becomes paralyzed. Furthermore, when the louver 9 is fully opened, most of the cold air is discharged from the second discharge port 8 which has a large discharge cross-sectional area, so that low-speed, weak wind can be obtained to cool nearby areas.
In either case, there is almost no decrease in air volume, so there is no risk of a decrease in cooling capacity.

The rotation of the louver 9 can be performed by the rotational force of a motor. An example structure in that case is shown in FIG. In FIG. 2, a gear or sprocket 11 is attached to a louver shaft 10 rotatably supported by a louver 9, while a geared motor 12
A gear or sprocket 13 is also attached to the output shaft of the motor 12, and the sprockets 11 and 13 are connected via a transmission mechanism 14 such as a chain.
By driving the louvers 9, all the louvers 9 can be rotated simultaneously.

According to such a louver drive mechanism, by driving the motor 12 to rotate continuously in one direction, the louver 9 is slowly and continuously rotated in one direction, thereby changing the overall speed of the discharged air periodically. It can also prevent numbing of the sensation of air conditioning and adverse effects on the human body's physiology.

Note that the vertically adjacent louvers 9 may be designed such that when the second discharge port 8 is in a closed state, their rotating ends touch each other as shown in FIG. As shown in the figure, the parts near the rotation ends may be designed to overlap with each other.

FIG. 5 shows another example of the louver drive mechanism. In FIG. 5, the rotating end of each louver 9 is rotatably connected to one connecting rod 15,
This connecting rod 15 is urged upward by a tension spring 16, while the other end of a thread or wire 17, one end of which is connected to the lower end of the connecting rod 15, is connected to a bobbin 19 that is rotationally driven by a reversible motor 18. There is. Here, the solid line indicates a state in which the thread 17 is sufficiently wound around the bobbin 19 and the louver 9 is opened. Now, when the reversible motor 18 is driven to loosen the thread 17, the connecting rod 15 is moved upward by the tension spring 16, and the louver 9 is closed as shown by the chain line. If the reversible motor 18 is driven in the opposite direction, the louver 9 will open again. Therefore, also in this structure, by alternately switching the reversible motor 18 between forward and reverse rotation, the overall speed of the discharged air can be periodically varied.

Further, in the structure shown in FIG. 5, all the louvers 9 follow the connecting rod 15. In view of this, spring 16,
Thread 17, motor 18 and bobbin 19 are omitted,
As shown in FIG. 6, a knob 20 is provided on the connecting rod 15, and the knob 20 is inserted into a guide hole 22 along an arc formed in the side wall plate 21 of the main body 1, and the knob 20 can be operated from the outside. Tsute louver 9
It can also be structured to open and close. In that case as well, it goes without saying that a structure is provided that allows the louver 9 to be locked in the closed position, fully open position, and other half-open positions. Note that the knob 20 may be provided on the louver 9.

As described above using the embodiments, according to the present invention, it is possible to provide a spot cooler that can always obtain an appropriate cooling effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an embodiment of a spot cooler according to the present invention, Fig. 2 is an enlarged perspective view of essential parts showing an example of an automatic drive mechanism of the louvers, and Fig. 3 is a diagram showing an example of the mutual relationship of the louvers. FIG. 4 is a diagram showing another example, FIG. 5 is a configuration diagram showing another example of an automatic louver drive mechanism, and FIG. 6 is a perspective view of essential parts of an example of a manual louver drive mechanism. 3...Blower, 4...Refrigerant evaporator, 5...Air inlet, 6...Discharge duct, 7...First discharge port,
8...Second discharge port, 9...Louver.

Claims (1)

[Scope of utility model registration request] In a spot cooler that takes in ambient air, cools it, and then discharges it, the cold air outlet is divided into a first outlet with a narrow discharge cross-sectional area and a second outlet with a wide discharge cross-sectional area. A spot cooler characterized in that the second discharge port is provided with a rotatable louver that substantially opens and closes the second discharge port depending on the rotation angle.