JP2508739B2 - Spot cooler cool air blowing direction control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spot cooler for locally cooling a building such as a factory, and more specifically, a cool air for controlling the blowing direction of the cool air of the spot cooler. The present invention relates to a blowing direction control device.

(Prior Art) Conventionally, in local cooling by a spot cooler, cooling is performed by a fixed duct for blowing cold air, cooling by swinging the duct for blowing cold air, and as disclosed in Japanese Utility Model Publication No. 56-9155. The direction of the opening that blows out cold air is two-dimensionally changed to perform cooling with intermittent cold air.

(Problems to be Solved by the Invention) However, in the case of a fixed duct for blowing cold air, it is effective in fixed-position work, but in moving work, it deviates from the cooling range each time the worker moves around, so The person himself had to change the direction of the duct. Even when the duct is not a fixed duct, cold air is blown out regardless of the position of the worker, and the feeling of cooling is insufficient especially in a work place or the like in an environment with severe heat. As described above, in each case, there is a problem that a sufficient cooling feeling cannot be obtained.

(Object of the Invention) An object of the present invention is to provide a spot cooler that solves the above-mentioned problems and can always apply cool air to an operator and improve the cooling feeling.

(Means for Solving the Problems) In order to achieve the above object, the present invention is rotatably supported by a spot cooler main body and blows cold air to blow cold air and a cold air outlet that turns the cold air outlet. Rotating means and a first for detecting a person within a predetermined first detection area
And a second person detecting a person in a predetermined second detection area.
And the second person detection means such that the first detection area and the second detection area have substantially the same detection area. A cool air blowing direction control device for a spot cooler arranged, wherein when a person is detected by the first person detecting means and a person is not detected by the second person detecting means, the cool air outlet is set to the first person detecting means. A first control means for controlling the cold air outlet rotation means so as to face the first detection area; and a person not detected by the first person detection means, and a second person detection means. When a person is detected, second control means for controlling the cold air outlet rotation means so as to direct the cold air outlet toward the second detection area, the first person detection means and the Second person detection means And a third control means for controlling the cold air outlet rotating means so that the cold air outlet is directed toward the substantially same detection area when a person is detected by the cold air outlet of the spot cooler. The direction control device is the gist.

Further, a region in which the first detection region and the second detection region partially overlap with each other may be provided, and the region in which the first detection region partially overlaps may be the substantially same region.

(Operation) A person is detected by the first interpersonal detection means, and the second person is detected.
When the person is not detected by the person detecting means, the second control means controls the cold air outlet rotating means, whereby the cold air outlet is directed to the first detection area.

Also, no person is detected by the first interpersonal detection means,
And when a person is detected by the second interpersonal detection means,
The second control means controls the cold air outlet rotation means, whereby the cold air outlet faces the second detection area.

Further, when a person is detected by the first person detection means and the second person detection means, the third control means controls the cold air outlet rotation means, whereby the cold air outlets are substantially the same. Face the detection area.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the spot cooler body 2 of the spot cooler 1 is formed in a box shape. The cooler body 2 has a first front face upper portion as a first person detection unit with a predetermined interval left and right. The ultrasonic sensor C1 and the first ultrasonic sensor C2 as the second interpersonal detecting means are arranged so as to face forward. Each of the ultrasonic sensors C1 and C2 is an ultrasonic pulse type sensor, and is composed of an ultrasonic transmitter / receiver that emits ultrasonic waves and receives the reflected waves. Then, as shown in FIG. 2, the first ultrasonic sensor C1 can detect the first detection area Z1, the second ultrasonic sensor C2 can detect the second detection area Z2, and further, The detection areas Z1 and Z2 by both sensors C1 and C2 have detection areas Z3 which are substantially the same. Specifically, the first detection area
Z1 and the second detection area Z2 partially overlap, and this overlapped area is referred to as a third detection area Z3.

At the center of the front upper part of the spot cooler body 2, a cold air blowing duct 3 as a cold air outlet is supported so as to be rotatable in the left-right direction. That is, as shown in FIG. 3, the base portion of the duct 3 for blowing cold air is connected to the rotating cylinder 5 which is supported by the support shaft 4 in the spot cooler body 2 so as to be rotatable in the left-right direction. A rotary member 6 is fixedly mounted on the inner surface of the rotary cylinder 5, and the rotary member 6 decelerates and outputs the rotation of a drive motor 7 serving as a cool air outlet pivoting means. And the link member 10 are connected. When the drive motor 7 is driven, the rotational force reduced by the speed reducer 8 is transmitted to the rotary cylinder 5 via the drive arm 9 and the link member 10, and the cold air blowing duct 3 rotates in the left-right direction. It is supposed to be moved.

A fan switch 11 and a follow-up switch 12 are installed on the front upper part of the spot cooler body 2. The fan switch 11 is a switch for starting the drive control of the compressor of the refrigeration cycle in the cooler 1 and the drive control of the evaporator fan to blow out cool air from the cool air blowing duct 3. Further, the follow-up switch 12 is the sensor C1, C
This is a switch for starting the rotation control of the cold air blowing duct 3 based on the detection of 2.

Next, the electrical configuration of the cool air blowing direction control device for the spot cooler 1 thus configured will be described with reference to FIG.

The first and second ultrasonic sensors C1 and C2 are connected to the controller 13 as the first control means, the second control means, and the third control means, and the controller 13 has the respective sensors C1 and C2.
The detection signal is input to determine the presence / absence of a person in each of the detection areas Z1, Z2, and Z3. Further, the controller 13 is connected to a fan switch 11 and a follow-up switch 12, and an operation signal is inputted from each of the switches 11 and 12.

Further, the drive motor 7 is connected to the controller 13, and the controller 13 drives the motor 7 for a predetermined time to change the direction of the duct 3 for blowing cold air, and as shown in FIG. Center position (B direction deviated from the front A direction by an angle Θ), center position of the second detection area Z2 (C direction deviated from the front A direction by an angle Θ), and third detection area Z3 The direction can be changed to the front direction (A direction) which is the center position of the.

In addition, the controller 13 has a compressor for the refrigeration cycle.
14 and an evaporator fan 15 are connected so that the controller 13 can control the drive of both devices 14, 15.

Next, the operation of the cool air blowing direction control device for the spot cooler configured as described above will be described with reference to FIG.

When the fan switch 11 is turned on and the follow-up switch 12 is turned on, the controller 13 turns on both sensors C1 and C.
Performs the following operations based on the signal input from 2.

First, when neither the first ultrasonic sensor C1 nor the second ultrasonic sensor C2 detects a person, the controller 13 determines that there is no person in any of the detection areas Z1 to Z3, and the compressor 14 and the evaporator The driving of the dexterity fan 15 is stopped.
Further, when the first ultrasonic sensor C1 detects a person and the second ultrasonic sensor C2 does not detect, the controller 13 determines that there is a person in the first detection area Z1 and the cool air blowing duct 3 The drive motor 7 is controlled so as to turn the direction B. In addition, the controller 13 includes a first ultrasonic sensor C1 and a second ultrasonic sensor C2.
When both of them detect a person, it judges that there is a person in the third detection area Z3 and controls the drive motor 7 so that the cold air blowing duct 3 is directed in the A direction. Further, the controller 13 uses the second ultrasonic sensor C1 as the first ultrasonic sensor C1 does not detect a person.
When C2 is detected, it is determined that there is a person in the second detection area Z2, and the drive motor 7 is controlled so that the cold air blowing duct 3 is directed in the C direction.

As a result, even if the operator moves the first detection area Z1, the second detection area Z2, and the third detection area Z3, the cold air blowing duct 3 rotates following the movement.

Thus, in this embodiment, two ultrasonic sensors are used.
C1 and C2 detect which of the three zones Z1 to 3 the worker is in and rotate the cold air blowing duct 3 so that the cold air is blown to that area. Even when it is necessary to work across Z1 to Z3, the cool air can be constantly applied to improve the cooling feeling and the working environment.

In the above embodiment, when the worker moves from the third detection area Z3 to, for example, the first detection area Z1, the cold air blowing duct 3 is controlled so as to rotate in the B direction instead of the A direction. Therefore, the duct 3 for blowing cold air can reliably follow the movement of the worker and improve the cooling feeling of the worker.
When a person is not in any of the first to third areas Z1 to Z3, the drive of the spot cooler 1 (drive of the compressor 14 and the evaporator fan 15) is stopped, so that energy can be saved. .

The present invention is not limited to the above embodiment,
For example, as the sensor for detecting the presence of the worker, an infrared sensor may be used in addition to the ultrasonic pulse type sensor. or,
Although two sensors are provided in the above embodiment, the number of sensors may be increased or decreased to increase or decrease the detection area. In this case, accurate interpersonal tracking can be performed by increasing the detection area, and simple interpersonal tracking can be performed by reducing the detection area.

(Effects of the Invention) As described above, according to the present invention, the cool air outlet can reliably follow the movement of the worker, and the cool air can be constantly blown to the worker, thus improving the cooling feeling of the worker. It has the excellent effect of being able to

[Brief description of drawings]

FIG. 1 is a perspective view of a spot cooler in a cool air blowing direction control device for a spot cooler embodying the present invention, FIG.
FIG. 3 is a plan view of the spot cooler, FIG. 3 is a view showing a rotating mechanism of a duct for blowing cold air, and FIG. 4 is an electric block diagram showing an electrical configuration of a cool air blowing direction control device for the spot cooler.
FIG. 5 is a flow chart for explaining the operation of the cool air blowing direction control device for the spot cooler. 1 is a spot cooler, 2 is a spot cooler main body, 3 is a cold air blowing duct as a cold air outlet, 7 is a drive motor as a cold air outlet rotating means, 13 is a controller as a cold air outlet rotating control means, C1 Is a first ultrasonic sensor as a person detecting means, C2 is a second ultrasonic sensor as a person detecting means, and Z1, Z2, and Z3 are detection regions.

Claims (2)

(57) [Claims] 1. A cool air outlet for rotatably supported by a spot cooler main body for blowing out cool air, a cold air outlet rotating means for rotating the cold air outlet, and a predetermined first detection area. A first person detection means for detecting a person and a second person detection means for detecting a person in a predetermined second detection area, and the first detection area and the second detection area. A cool air blowing direction control device for a spot cooler in which the first person detecting means and the second person detecting means are arranged so that the areas have substantially the same detection area, the first person When a person is detected by the detecting means and a person is not detected by the second interpersonal detecting means,
First control means for controlling the cold air outlet rotation means so as to direct the cold air outlet toward the first detection region; and a person is not detected by the first interpersonal detection means, and When a person is detected by the second interpersonal detection means,
Second control means for controlling the cold air outlet rotation means so as to direct the cold air outlet toward the second detection area; and the first person detection means and the second person detection means. A third control means for controlling the cold air outlet rotation means so that the cold air outlet is directed to the substantially same detection area when a person is detected. Cooler blowing direction control device for cooler. 2. The substantially same detection area is an area in which the first detection area and the second detection area are partially overlapped with each other. Control device for cool air blowing direction of spot cooler.