JPS61128057A - Air conditioner - Google Patents

Abstract

PURPOSE:To provide an air conditioner which is excellent in comfortability and utility, by a method wherein a blow-off directiojn varying mechanism, which varies a blow-off direction according to an output signal from a controller, is located to an air flow supply opening. CONSTITUTION:A controller 11 comprises a microcomputer 29 and a driving circuit 30 which drives a stepping motor 7 by means of an output from an output circuit 28. A direction A of a blade 4 directs a blow-off direction toward the upper part of a chamber, a direction B causes the blow-off direction to be directed toward the lower part of the chamber, and a direction C indicates a state to block up a supply opening 3. Further, a blow-off direction switching flow chart, being executed by the controller 11, is provided. Firstly, dicision of an operating condition is effected, and is cooling operation is rendered effective, the blade 4 is secured in the direction A. If heating operation is rendered effective, if it decided whether defrosting operation is taking place, and is a device is not under defrosting, the blade 4 is secured in the direction B. If it is under defrosting, the blade 4 is secured in the direction C. This causes the blade 4 to be automatically switched so that the causes the blade 4 to be automatically switched so taht the blade is directed toward the upper part of a chamber during cooling operation, the blade is directed to the lower part of the chamber during heating operation, and a supply opening 3 is blocked up during defrosting operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an air conditioner, and particularly to a mechanism for changing the airflow direction of an air outlet thereof.

[Conventional technology]

Figure 2 is a cross-sectional view of the outlet of a conventional ceiling-suspended or wall-mounted air conditioner, as shown in Japanese Patent Publication No. 57-15296, in which 1 is the upper plate of the outlet, and 2 is the curved lower side. The guide wall %3 is an air outlet formed by the upper plate 1 and the guide wall 2, 4 is a blade supported at the center of the air outlet 3 so as to be freely rotatable by a rotating shaft 5, and 6 is an air outlet upstream of the air outlet. The air flow supply port is connected to the air blowing section by the blower fan.

In the above configuration, the air flowing into the supply port 6 flows along the blades 4, and the blowing direction is determined by the inclination angle of the blades 4 to be upward, downward, or horizontal, and is blown out from the blowing port 3. During normal cooling, by setting the blades 4 horizontally, the airflow is blown horizontally across the top of the room, and during heating, by setting the blades 4 downwards, the airflow is blown downward, which improves the temperature distribution in the room. I'm trying to keep it small.

[Problem that the invention seeks to solve]

However, the above-mentioned conventional air conditioners are usually installed at a location higher than the height of a human being, and changing the direction of the blades 4 is extremely troublesome. Also, when the seasons change, cooling operation and heating operation may be performed alternately, and it is necessary to reset the direction of the blades 4 each time. The distribution has worsened. Furthermore, there are other problems such as a feeling of coldness due to the leakage of cold air from the air outlet 3 during defrosting, and the intrusion of dirt and dust from the air outlet 3 when the operation is stopped.

The present invention was made to solve the above problems, and an object of the present invention is to provide an air conditioner with excellent comfort and convenience.

[Means for solving problems].

The air conditioner according to the present invention is provided with a blow-off direction changing mechanism for changing the blow-off direction in accordance with an output signal from a controller such as a microcomputer at the air flow outlet.

[For production]

The air conditioner according to the present invention changes the blowing direction of the blower outlet to a predetermined direction toward the upper part of the room and a predetermined direction toward the lower part of the room according to an output signal from a controller such as a microcomputer. Automatically change direction to block.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 shows a part of the blowout direction changing/fixing mechanism of the blower outlet 3, where 7 is a stepping motor that drives the rotary shaft 5 and rotates the blade 4, and 8 is a stepping motor that is attached on an extension of the rotary shaft 5 and is attached to the blade 4.
This is a potentiometer that detects the position of the

Moreover, FIG. 1 shows a blade direction control device, and 9 is an AC power supply;
12 is a DC stabilized power supply circuit connected to the current power supply 9%
11 is a controller connected to the DC stabilized power supply circuit 12;
The controller 11 receives the output of a microcomputer 29 consisting of a CPU 25, a memory 26, an input circuit 27, and an output circuit 28, and an output circuit 28, and controls the stepping motor 7.
and a drive circuit 30 that drives the. Reference numeral 10 denotes an operation mode changeover switch provided on the input side of the input circuit 27, and the output of the potentiometer 8 is also applied to the input side of the input circuit 270.

Next, the operation of the above device will be explained using FIGS. 4 and 5. FIG. 4 shows each direction of the blade 4, and the A direction (first
direction) is the state in which the blowing direction is directed towards the upper part of the room, direction B (second direction) is the state in which the blowing direction is directed towards the lower part of the room,
Direction C (third direction) indicates a state in which the air outlet 3 is blocked. Further, FIG. 5 is a 70-chart of blowing direction switching executed by the controller 11. First, in step 14, the state of the driving direction changeover switch 10 is checked and it is determined whether the vehicle is running or stopped. If it is stopped, step 16
Proceed to step a and read the position of the blade 4 from the input signal of the potentiometer 8. In step 17, the number of steps of the stepping motor 7 required to rotate the blade 4 is calculated, in step 20, pulses are sent to the stepping motor 7 by the required number of steps, and in step 21, the stepping motor 7 is moved ffi. Driven by the stepping motor 7, the blade 4 is fixed in the C direction and blocks the air outlet 3. If it is in operation, it is determined in step 15 whether it is cooling operation or heating operation. Step 16b for cooling operation
, the position of the blade 4 is detected, step 18 calculates the number of steps required to rotate the blade 4 in the A direction, and step 20.21 drives the stepping motor 7 for the required number of steps. Fix the blade 4 in the A direction.

The air flow direction is directed toward the upper part of the room by the blades 4 fixed in the inlet direction. Step 1 for heating operation
6c, the position of the blade 4 is detected, step 19 calculates the number of steps necessary to rotate the blade 4 in the direction B, step 20.21f, the stepping motor 7 is driven by the number of steps, and the blade 4 is rotated. Fix it in direction B.

The air flow direction is directed toward the lower part of the room by the blades 4 fixed in the B direction. In this way, the air outlet 3 is shut off when the operation is stopped, and the air outlet direction is automatically switched to the upper part of the room during the cooling operation, and to the lower part of the room during the heating operation.

In the above embodiment, the controller 11 is provided with means for outputting a signal to switch the air outlet 3 in the direction of blocking the air outlet 3 when the operation is stopped. The controller 11 may be provided with an output means.

FIG. 6 and FIG. 7 show a second embodiment of the present invention, in which the controller 11 is provided with means for outputting a signal for switching the air outlet 3 in the direction of cutting off the air outlet 3 during defrosting. Reference numeral 13 denotes a defrost detection circuit, which detects this during defrost operation and sends an output to the input circuit 27. The other configurations are the same as in the first embodiment.

In the above configuration, first, in step 22.23, the operating state is determined, and if the cooling operation is performed, the process proceeds to step 16b, and further proceeds to steps 18 and 20.21, in which the blade 4 is turned to A.
Fixed in direction. If it is heating operation, proceed to step 24.
It is determined whether or not the defrosting operation is in progress, and if the defrosting operation is not in progress, the process proceeds to steps 16c and 19 to 21 to fix the blade 4 in the B direction. If the defrosting operation is in progress, the process proceeds to steps 16a, 17, 20, and 21 to fix the blade 4 in the direction C, similar to the operation at the time of stopping the operation in the first embodiment. In this way, the blowing direction is automatically switched to the upper part of the room during cooling operation, the blowing direction to the lower part of the room during heating operation, and further to the direction of blocking the blower outlet 3 during defrosting.

〔Effect of the invention〕

As described above, in the present invention, the % air flow blowing direction is set to the first predetermined direction toward the upper part of the room during cooling, the g20 predetermined direction toward the lower part of the room during heating, and when the operation is stopped or during defrosting operation. Inside, the air outlet is automatically switched to a third predetermined direction that shuts off the air outlet. Therefore, there is no need to manually switch the blowing direction, providing convenience. Furthermore, the temperature distribution throughout the room is constantly made uniform, and leakage of cold air during defrosting and entry of dirt and dust into the air conditioner are also prevented, providing better comfort.

[Brief explanation of drawings]

1 and 6 are block diagrams of blade direction control devices for air conditioners according to first and second embodiments of the present invention, respectively, and FIG. 2 is a sectional view of a blowing section of a conventional air conditioner. FIG. 3 is a partial perspective view of the air blowing direction changing and fixing mechanism of the air conditioner according to the present invention, FIG. 4 is a diagram of the blade operation according to the present invention, and FIG.
7 are flowcharts of the controller according to the first and second embodiments of the present invention, respectively. 3...-Air outlet, 4... Blade, 5... Rotating shaft, 7...
...Stepping motor, 8...Potentiometer,
DESCRIPTION OF SYMBOLS 10... Operation mode changeover switch, 11... Controller, 13... Defrost detection circuit. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] (1) In an air conditioner having an air outlet whose air flow direction is variable, the controller and a first predetermined direction and a room in which the air outlet direction is directed toward the upper part of the room according to the output from the controller. and a blowout direction changing and fixing mechanism that changes and fixes the blowout direction to a second predetermined direction toward the lower part of the air outlet and a third predetermined direction that blocks the blower outlet, the blowout direction being changed to the first predetermined direction during cooling operation,
The controller is provided with an airflow direction switching means for outputting a signal for switching the airflow direction to the second predetermined direction during heating operation and to the third predetermined direction for blocking the air outlet during operation stop or defrosting operation. An air conditioner featuring: