JPH06103114B2 - Ceiling embedded air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a ceiling-embedded air conditioner, and more particularly, to a blowout port provided around a suction port provided in a central portion, and air blown out from the blowout port. The present invention relates to a ceiling-embedded air conditioner with a changeable wind direction.

(Prior Art) Conventionally, a suction panel is provided at a lower center portion of a decorative panel attached to a ceiling surface, four blowout ports are provided on four sides surrounding the suction port, and an airflow direction adjusting blade is provided at the blowout port. An interposer capable of changing the direction of the blown air is disclosed in, for example, Japanese Patent Laid-Open No. 61-
It is already known from 110821, etc.

(Problems to be solved by the invention) At the time of heating operation, however, the air blown out from the air outlet (warm air) is widely circulated throughout the room to improve the temperature distribution in the room and to the floor surface. In order to perform heating without excess or deficiency, it is general that the blown air (warm air) is blown downward from the air outlet by adjusting the airflow direction adjusting blades.

However, as described above, this kind of ceiling-embedded air conditioner has a warm air blown from the blowout port because the suction port and the blowout port are arranged adjacent to each other on the lower side of the decorative panel. Tends to cause a so-called short circuit in which the air is immediately returned to the suction port before it circulates in the room.
A so-called thermo-off state in which the temperature detector installed in the suction port etc. erroneously detects that the temperature has reached the set temperature and the operation is stopped while the entire room is not heated well, and a short circuit due to this operation stop The condition of the thermo-on in which the operation is restarted again by releasing is frequently repeated, which causes a problem that the actual operating time is shortened and the temperature distribution in the room is deteriorated.

This problem is particularly remarkable in the so-called 4-way blowout type in which four blowout ports are provided around the suction port as described above, but in the general 2-way blowout type. It goes without saying that similar problems will occur with things.

An object of the present invention is to detect when the temperature detector reaches a set temperature,
The number of starts and stops of the operation during heating is changed by transiently changing the wind direction of the blown air to the upward side, checking whether the intake air temperature has truly reached the set temperature, and then stopping that operation. It is an object of the present invention to provide a ceiling-embedded air conditioner capable of reducing the temperature and improving the temperature distribution in the room.

(Means for Solving Problems) Therefore, according to the present invention, a blowout port (11) is provided around a suction port (10) provided at a central portion, and air blown out from the blowout port (11). A ceiling-embedded air conditioner capable of changing the wind direction of the air conditioner, the wind direction setting means (51) for setting the wind direction of the air blown out from the air outlets (11), ..., And the suction port (10).
A temperature detector (53) for detecting the temperature of the intake air from
When the temperature detected by the detector (53) reaches the set temperature, the changing means for changing the wind direction of the air blown out from the air outlets (11), ... upward relative to the wind direction set by the wind direction setting means (51). (61) and when the temperature detected by the detector (53) is lowered by changing the upward wind direction by the changing means (61), the operation is continued by returning to the set wind direction of the wind direction setting means (51). An operation control means (62) for stopping the operation when the temperature detected by the detector (53) does not decrease is provided.

(Operation) When the temperature detected by the temperature detector (53) for the intake air reaches the set temperature, the operation is not stopped immediately, but
The change means (61) transiently changes the wind direction of the blown air to the upward side, and by checking whether or not the temperature detected by the detector (53) has dropped, the intake air truly reached the set temperature. It is possible to determine whether or not there is, and when there is a temperature decrease, that is, when it is determined that the intake air has not yet reached the set temperature, the operation control means (62)
To stop the operation via the operation control means (62) only when there is no temperature drop, that is, when it is truly judged that the intake air has reached the set temperature. As a result, it is possible to reduce the number of times of starting and stopping the operation and improve the temperature distribution in the room.

(Example) What is shown in FIG. 3 and FIG. 4 is a four-way blowout type air conditioner, and a decorative panel (2) attached to a ceiling surface (30) below a main body casing (1). And a suction port (10) is provided at the center of the decorative panel (2), and four outlets (11) to (14) are provided in four directions surrounding the suction port (10). It is provided.

Inside the casing (1), fans (4) and (5) are arranged so as to face the suction port (10), and heat having a U-shape is provided around the fans (4) and (5). An exchanger (3) is provided, and the suction air from the suction port (10) is heat-exchanged with the heat exchanger (3), and the air outlet (11) to
I try to blow from (14).

A drain pan (2a) is formed on the upper surface of the decorative panel (2) for receiving the dew condensation water of the air that is heat-exchanged by the heat exchanger (3). Inside, a controller, which will be described later, and a control box (6) for accommodating various electric components around the power supply are installed.

Further, the blower outlets (11) to (14) are provided with wind direction adjusting blades (21) to (24) for adjusting the wind direction of the blown air, respectively, as shown in FIG. 5 and FIG. Motor (M)
It is possible to change the angle in conjunction with driving.

That is, each of the blades (21) to (24) is rotatably supported around the support shaft (L) via the bearings (B) and (B), and the support shafts (L) ... Are connected to each other by three connecting rods (31) to (33) through a universal joint (J) formed at the shaft end thereof, and each of the blades (21) to
While the turning motions of (24) are interlocked with each other, they are interlocked with the motor (M) via a swing arm (7) integrally extending from one (32) of the three connecting rods. Of.

The swing arm (7) is rotatably connected to a connecting link (8) through a connecting pin (P1), and the connecting link (8) is a drive shaft (C) of the motor (M). ) Is attached to an eccentric pin (P2) projecting from an eccentric link (9) attached to (4).

Then, as the motor (M) is driven to rotate, the angles of the blades (21) to (24) are directed downward through the eccentric link (9), the connecting link (8), and the swing arm (7). The angle can be changed within a predetermined range from the angle to the upward angle.

In this case, as shown in FIG. 7, a linear motor or a stepping motor is used as the motor (M),
For example, the rotation angle can be changed by an angle (36 °) obtained by dividing one turn into 10 equal parts, and the blades (21) to (24) are moved from the maximum downward angle shown by a in the figure to f in the figure. The wind direction is adjusted in 6 steps (blade angles a to f) up to the maximum upward angle.

In FIG. 7, black circles a to f indicate positions of the connecting pin (P1) and the eccentric pin (P2) corresponding to the blade angles a to f, and white circles b'to e'are shown. , The position of the eccentric pin (P2) at which the blade angles are the same.
Further, the drive shaft (C) of the motor (M) and the support shaft (L) serving as the rotation shaft of the blades (21) to (24) are shown by double circles.

Then, in the air conditioner configured as described above,
In particular, in order to improve the comfort by reducing the number of times of starting and stopping the operation during the heating operation, the following is performed.

That is, as shown in FIG. 1, the wind direction adjusting blades (21)-
An air-direction setting means (51) for adjusting the air-direction of the air blown out from the outlets (11) to (14) by adjusting (24) to an arbitrary setting angle in advance, and setting the room temperature to an arbitrary setting temperature in advance. And a temperature setting means (52) for setting the temperature setting means (5).
1) (52) can be set and operated by remote control from, for example, the remote controller operation unit (R).

Further, in order to compare with the set value of the room temperature in the temperature setting means (52), a thermistor thermometer or the like for detecting the temperature of the suction air from the suction port (10) at the suction port (10). A temperature detector (53) is installed.

The wind direction setting means (51) and the temperature setting means (52)
And the temperature detector (53) as input, and based on these inputs, give the start / stop signal, that is, the thermo-ON / OFF signal to the start / stop means (72) for starting / stopping the operation of the compressor, and The motor (M) for adjusting the angles (21) to (24)
Controller (6) that gives an angle command to the driving means (71)
0) is provided.

The controller (60) is composed of a microcomputer or the like, and the controller (6
0), when the temperature detected by the detector (53) reaches the temperature set by the temperature setting means (52), the air outlet (11)
The wind direction of the air blown from (14) to the wind direction setting means (5
With respect to the set wind direction of 1), a changing means (61) for changing the upward direction by driving the motor (M), and the changing means (6).
When the temperature detected by the detector (53) decreases due to the upward wind direction change by 1), the motor (M) is driven again to return to the set wind direction of the wind direction setting means (51) and the operation is continued. When the detected temperature of the detector (53) does not decrease, the start / stop means (72) is incorporated with an operation control means (62) for stopping the operation by giving a thermo-off command.

Next, the control procedure by the controller (60) configured as described above will be described based on the flowchart shown in FIG.

First, the blade angles of the blades (21) to (24) are adjusted to the wind direction set by the wind direction setting means (51), and the operation is started.

The detector (53) detects the intake air temperature, and determines whether or not the detected temperature has reached the set temperature set by the temperature setting means (52).

When the detected temperature reaches the set temperature, the blades (21) ~
The blade angle of (24), that is, the wind direction of the blown air is determined.

At this time, if the wind direction is the maximum upward,
A thermo-off command is given to the starting / stopping means (71) to stop the operation.

In other cases, by the changing means (61),
The rotation angle of the motor (M) is changed to change the wind direction upward by one step.

After waiting for 1 minute, the intake air temperature and the set temperature are determined again.

At this time, if it is determined that the detected temperature has not decreased and the set temperature has been reached even though the wind direction has been changed upward with respect to the original set wind direction, it means that the interior of the room is true regardless of the short circuit. Since it can be determined that the vehicle has been heated, the operation control means (62) gives a thermo-off command to the start / stop means (72) to stop the operation.

On the other hand, if there is a drop in the detected temperature, it can be determined that the short circuit has immediately returned the blown air to the suction port (10) without significantly circulating it in the room. The operation is continued by the operation control means (62).

If there is a decrease in the detected temperature, if the degree of the decrease is extremely small, that is, if it is within the temperature range obtained by subtracting the temperature range (t ° C.) such as 2 ° C. from the set temperature, Since it can be judged that at least the true room temperature has reached the set temperature, the operation is continued with the wind direction changed upward.

On the other hand, when the degree of decrease deviates from the temperature range, the blade angles of the blades (21) to (24) are returned to the downward side, that is, the wind direction set by the wind direction setting means (51). Continue driving.

Then, returning to the above-described blowout temperature determination process,
The above processing is repeated thereafter.

Thus, when the temperature detector (53) reaches the set temperature (the above processing), the thermo-off command is not immediately output to stop the operation, but the changing means (61) changes the direction of the blown air upward. One step is transiently changed to the horizontal side (the above process) to check whether or not the intake air truly reaches the set temperature (the above process), and then the operation control means (62) is used. Since the operation is stopped (the above-mentioned processing, and the subsequent processing if there is no stop), the number of times of starting and stopping the operation can be reduced, and the temperature distribution in the room can be improved. Of.

Further, when it is determined that there is a temperature decrease by the above processing and the operation is continued, and the degree of the temperature decrease is small, the airflow direction is changed one step upward without returning to the original set wind direction, that is, the downward direction. Since the operation is continued in the wind direction (the above process), the frequency of changing the angles of the blades (21) to (24) by the motor (M) can be reduced, and efficient control can be performed as a whole. It has arrived.

In the above embodiment, the four-way air blow type has been described, but the present invention is not limited to this, and may be applied to a general two-way air blow type, a three-way air blow type, or the like.

Further, in the above embodiment, the wind direction can be changed over 6 steps, but it goes without saying that the number of steps for changing the wind direction or the change width of the blade angle for changing the wind direction can be appropriately selected.

(Effect of the invention) As described above, according to the present invention, when the temperature detected by the temperature detector (53) of the intake air reaches the set temperature, the operation is not stopped immediately but by the changing means (61). Only when it is determined that the intake air temperature has truly reached the set temperature by transiently changing the wind direction of the blown air to the upward side,
Since the operation is stopped through the operation control means (62), it is possible to reduce the number of times of starting and stopping the operation during the heating operation, to secure a substantial operation time, and to keep the indoor temperature The distribution could be improved, and the comfort could be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an operation control system of an air conditioner of the present invention, FIG. 2 is a flow chart for explaining the control procedure, FIG. 3 is a plan view of the air conditioner, and FIG. 4 is a vertical section thereof. FIGS. 5 to 7 are explanatory views of a drive mechanism for changing the wind direction. (10) …… Suction port (11-14) …… Blowout port (51) …… Air direction setting means (53) …… Temperature detector (61) …… Change means (62) …… Operation control means

Claims (1)

[Claims] 1. A ceiling embedding in which a blow-out port (11) is provided around a suction port (10) provided in a central portion, and a wind direction of air blown out from the blow-out port (11) can be changed. An air conditioner of the type: wind direction setting means (51) for setting the wind direction of the air blown from the air outlets (11), and temperature detection for detecting the temperature of the air sucked in from the air inlet (10). When the temperature detected by the air conditioner (53) and the detector (53) reaches a set temperature, the wind direction of the air blown from the air outlet (11) ... Change means to change upward (6
1) and when the temperature detected by the detector (53) is lowered by changing the upward wind direction by the changing means (61), the operation is continued by returning to the set wind direction of the wind direction setting means (51), An embedded ceiling type air conditioner comprising: an operation control means (62) for stopping the operation when the temperature detected by the device (53) does not decrease.