JP2001254989A - Air conditioner wind direction control method - Google Patents

Abstract

(57) [Summary] [Problem] To provide a wind direction control method for an air conditioner that uses a single indoor unit to form a more natural airflow and improve comfort in a living space. SOLUTION: A wind improvement lower blade 19a, 1 is provided inside an indoor unit A.
9b, furthermore, an air volume detecting means, a set temperature detecting means,
An indoor temperature detecting unit; and a temperature difference calculating unit configured to calculate a difference between the set temperature output from the set temperature detecting unit and the indoor temperature output from the indoor temperature detecting unit, wherein the wind improving lower blades 19a and 19b are provided. Is a plurality of divided air conditioners, wherein the plurality of wind improving lower blades 19a, 19
b, according to the airflow detected by the airflow detection means and the temperature difference detected by the temperature difference calculation means, in a state where the angle direction of the wind direction is different between one wind enhancement lower blade 19a and the other wind enhancement lower blade 19b. Rock it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for controlling an air conditioner, and more particularly, to a method for controlling a wind direction of an air conditioner for forming a natural air flow.

[0002]

2. Description of the Related Art In the case of performing cooling or the like by an air conditioner, there is a case where it is desired to improve the comfort of a living space by reproducing an airflow close to nature. However, the following wind direction control method has been used conventionally. .

[0003] A conventional wind direction control method for an air conditioner will be described with reference to Figs.

[0004] Reference numeral 50 denotes an indoor unit of an air conditioner. 51 is a front cover, 52 is an air inlet, 53 is a heat exchanger, 5
4 is a blower fan, 55 is a rear guider, 56 is a stabilizer, and 58 is an air outlet.

[0005] The air introduced from the inlet 52 by the blower fan 54 is sent out from the outlet 58 through a blower path 57 formed by a stabilizer 56 and a rear guider 55. A plurality of wind direction left and right blades 60 for horizontally changing the flow of wind and a lower wind improving blade 59 for vertically changing the flow of wind are rotatably supported at the outlet 58.

Then, as shown in FIG. 8, the lower wind improving blade 59 is vertically swung by a stepping motor (not shown) connected to the lower wind improving blade 59.
By changing the air volume, the swing amplitude θ, the swing speed v, and the like with time, an airflow similar to a natural airflow was formed. For example, Japanese Unexamined Patent Publication No. Hei 8-313032 discloses that the swing amplitude, swing speed, and the holding time at the top dead center or the bottom dead center of the wind improvement lower blade are changed with time based on chaos data. I have.

[0007]

However, in the above-described conventional wind direction control method, the air outlet 58 having the same airflow is used.
Therefore, the vertical angle of the airflow sent from the indoor unit can be changed only in the same phase.

[0008] On the other hand, in the natural world, airflows generated from a plurality of airflow sources are changing at phases different from each other, and these are combined to form the entire airflow.
Therefore, by arranging a plurality of indoor units, it is possible to form a more natural airflow, but the cost is low and control becomes complicated. For this reason, in the conventional wind direction control method, there is a limit in making the indoor airflow formed by the air conditioner close to nature.

Further, since the wind direction is controlled irrespective of the air volume, the indoor temperature, and the indoor temperature set by the user, for example, when the user feels hot and wants a more cool air feeling, the airflow is reduced. There were problems such as insufficient delivery.

[0010] In view of the above, the present invention provides a wind direction control method for forming a near-natural airflow using a single indoor unit to further improve the comfort of a living space. The purpose is to:

[0011]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention comprises:
A heat exchanger, a blower fan, and a wind enhancement lower blade that is rotatably supported in a vertical direction on the blower outlet and changes the wind direction in a vertical direction, and further, an airflow detection unit that detects an airflow,
A set temperature detecting means for detecting a set temperature; an indoor temperature detecting means for detecting an indoor temperature; and a difference between a set temperature output from the set temperature detecting means and an indoor temperature output from the indoor temperature detecting means. In the air conditioner, wherein the lower wind improvement blade is divided into a plurality of pieces in the horizontal direction, the plurality of lower wind improvement blades are output from the air volume detection means as the air volume and the temperature. This is a wind direction control method for an air conditioner that oscillates in such a manner that the angle phases of the wind directions of one wind enhancement lower blade and the other wind enhancement lower blade differ depending on the temperature difference output from the difference calculation means.

By this wind direction control method, an airflow close to nature can be realized, and the comfort of the living space can be improved at any airflow temperature.

According to a second aspect of the present invention, at least one of the swing amplitude of the wind-enhancing lower blade, the top dead center holding time, the bottom dead center holding time, and the swing speed, A wind direction control method for an air conditioner, wherein one of the top dead center holding time, the bottom dead center holding time, and the swing speed is changed over time.

According to this wind direction control method, each of the blowout flows can be made to fluctuate to give a more natural change to the indoor airflow.

According to a third aspect of the present invention, there is provided a wind direction control method.
As means for changing the swing of the wind improvement lower blade over time,
It is a wind direction control method of an air conditioner that controls based on chaos data.

According to this wind direction control method, a more natural airflow change can be provided.

According to a fourth aspect of the present invention, there is provided a wind direction control method comprising:
This is a wind direction control method for an air conditioner that determines the swing amplitude of the wind-enhancing lower blade in accordance with the airflow, which is an output value from the airflow detection means, and the temperature difference output from the temperature difference calculation means.

According to this wind direction control method, when the air volume is large and the temperature difference is large, the user seeks a more airflow feeling, so that the user applies more airflow. When the air volume is small and the temperature difference is small, the interior of the room is constant. Since it is better that the comfort is maintained and the airflow feeling is small, the comfort can be further improved by preventing the airflow from hitting the user so much.

According to a fifth aspect of the present invention, there is provided a wind direction control method comprising:
This is a wind direction control method for an air conditioner that shifts the position of the top dead center of the wind enhancement lower blade according to the airflow amount output from the airflow detection unit and the temperature difference output from the temperature difference calculation unit.

According to this wind direction control method, when the air volume is large and the temperature difference is large, the user seeks more airflow feeling, so that the airflow is directed to the user with the wind direction downward, and the air volume is small and the temperature difference is small. Sometimes, a certain level of comfort is maintained in the room and the airflow feeling is better. Therefore, the comfort can be further improved by raising the wind direction so that the airflow does not hit the user very much.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIGS. 1 and 2, A is an indoor unit of an air conditioner. 1 is a front cover, 2 is an air inlet,
3 is a heat exchanger, 4 is a blower fan, 5 is a rear guider, 6 is a stabilizer, and 8 is an air outlet.

A plurality of wind direction left and right blades 20 for changing the wind flow in a substantially horizontal direction, and a wind improving lower blade 19 for changing the wind flow in a vertical direction (vertical direction) are provided near the outlet 8.
a and 19b are pivotally supported.

The wind improving lower blades 19a and 19b are divided into three parts in the horizontal direction, and include a central wind improving lower blade (central wind improving lower blade) 19a and left and right wind improving lower blades (right and left wind improving lower blade) 19b, The left and right wind improving lower blades 19
b are linked with each other, while the central wind improving lower blade 19a
Are rotatable independently, and these wind improving lower blades 1
9a and 19b are rotated by driving means such as a stepping motor (not shown).

With the above configuration, the air introduced from the air inlet 2 by the blower fan 4 is sent out from the outlet 8 through the airflow path 7 formed by the stabilizer 6 and the rear guider 5.

The central wind improving lower blade 19a and the left and right wind improving lower blade 19b are vertically swung (rotated) so that the phases of the rotational angles are different from each other, as shown in FIG.

As a result, the outlet stream 21a at the center of the outlet port
And the outlet flows 21b on the left and right sides of the outlet change in different phases from each other, and these outlet flows are combined to form an airflow in the entire room, so that a natural airflow can be realized.

The swing conditions for swinging the central wind improving lower blade 19a and the left and right wind improving lower blade 19b include a swing amplitude θ (degree), a bottom dead center holding time T1 (second), and a top dead center holding time. There are T2 (second) and swing speed v (degree / second), and at least one of them is changed with time.

As a method of changing over time, for example, by changing based on chaos data,
Each of the blowout flows 21a and 21b can have a fluctuation similar to a natural airflow.

The chaos data referred to here is a discrete data series calculated based on chaos theory, and data is arranged based on a certain order similar to the natural world. The chaos data to be used is calculated from the Lorentz equation or the like.

By incorporating the microcomputer chip capable of generating the chaos data into the control device of the air conditioner, the chaos data can be generated in parallel with the swing operation.

Also, chaos data of a predetermined length calculated in advance may be programmed in a ROM (Read Only Memory) or the like and incorporated in the control device of the air conditioner. In this case, the chaos data having a predetermined length is repeatedly used, but if the chaos data has an appropriate length, it can be approximated to a natural airflow change.

Furthermore, in order to form an airflow close to nature, it is preferable to change the swing condition of the lower central wind enhancement lower blade 19a and the left and right horizontal wind enhancement lower blade 19b based on different chaos data. As a result, the outlet flow 21a at the center of the outlet and the outlet flow 21b at the left and right portions of the outlet have different fluctuations, and a more natural airflow change can be achieved.

In order to change the central wind improving lower blade 19a and the left and right wind improving lower blade 19b based on different chaos data, two chaos data calculated completely independently may be used. Feathers 19a, 19
It is preferable that the data sequence of the chaos data used for calculating any one of the swing conditions b is shifted by a predetermined number of data and used for calculating the other swing condition.

FIG. 4 (a) shows the central wind improving lower blade 19a.
FIG. 4B shows chaos data used for controlling the left and right wind improving lower blades 19b.

As shown in FIG. 4, the chaos data used for controlling the central wind improving lower blade 19a is shifted by half a cycle with respect to, for example, one cycle recorded in the ROM, and is used for controlling the horizontal wind improving lower blade 19b. As a result, only one ROM is required for generating the chaos data, and the wind direction can be controlled with a simple circuit configuration.

FIG. 5 is a side view showing an example of the swinging operation of the central wind improving lower blade 19a and the left and right wind improving lower blade 19b. Here, the swing amplitude θ (degree), the bottom dead center holding time T1 (second),
A method of changing the swing speed v (degrees / second) based on chaos data will be described.

The central wind improving lower blade 19a and the left and right wind improving lower blade 19b perform the same operation so that the phases of the angles are different from each other.

In order to control the angle phases of the central wind improving lower blades 19a and the left and right wind improving lower blades 19b to be different, a microcomputer program incorporated in the air conditioner in advance so that the initial angles of the respective blades are different. There are various methods such as setting, but a method of controlling using different chaos data is more preferable. According to such a method, the angle phases of the wind improvement lower blades can be made different from each other, and at the same time, the fluctuations of the blowout flows can be made different.

Next, referring to FIG. 5, the specific operation of the central wind improving lower blade 19a and the left and right wind improving lower blade 19b will be described. 1) The swing amplitude θ (degree), the bottom dead center holding time T1 (second), and the swing speed v (degree / second) are calculated based on the chaos data. 2) Wind improvement lower blades move downward from top dead center in velocity v
(Degrees / second) and rotate by the swing amplitude θ (degrees). 3) Stop at T1 (second) at the bottom dead center. 4) Rotate from the bottom dead center to the top dead center by the swing amplitude θ (degree) at a speed v (degrees / second). 5) Stop at top dead center holding time T2 (second) at top dead center. 6) Repeat the above 1) to 5).

FIG. 6 is a control flowchart showing an example of the swing operation of the wind improvement lower blades 19a and 19b in the present embodiment.

The control flow of the central wind enhancing lower blade 19a and the left and right wind improving lower blade 19b are the same except that the chaos data used is different. Therefore, the swing operation of the central wind enhancing lower blade 19a will be described here. explain.

First, in step S1, the indoor set temperature tr0 (° C.) set by the user is detected, the room temperature ta (° C.) is detected by a thermistor or the like, and the air flow OA (m ³ / min) is detected by a hot wire anemometer or the like. ) Is performed.

Next, in step S2, the swing amplitude parameter Xθ (an integer from 0 to 7) of the central wind improving lower blade is determined with reference to a chaos data table previously recorded in the ROM.

Similarly, in steps S3 and S4, the bottom dead center holding time parameter XT1 (an integer from 0 to 3) and the swing speed parameter Xv (an integer from 0 to 3) are stored in the chaotic data recorded in the ROM. Determined with reference to the table.

Next, in step S5, the amplitude area α
Is determined according to Table 1 from the temperature difference ΔT between the indoor set temperature tr0 and the indoor temperature ta and the air volume OA, and in step S6, the swing amplitude θ is determined from the amplitude area α and the swing amplitude parameter Xθ according to Table 2. .

[0047]

[Table 1]

[0048]

[Table 2]

[0049]

[Table 3]

Next, in step S8, the bottom dead center holding time T1 is determined from the bottom dead center holding time parameter XT1 according to Table 3, and in step S9, the swing speed v
(Degrees / second) is determined according to Table 4 from the swing speed parameter Xv.

[0051]

[Table 4]

[0052]

[Table 5]

Next, in step S10, a control signal for making the central wind improving lower blade 19a reciprocate one time is output based on the swing amplitude θ, the bottom dead center holding time T1, and the swing speed v.

Here, the top dead center holding time T2 is set to 0 second. However, when a stepping motor is used for swinging the central wind improvement lower blade 19a, the excitation pulse generation time of the stepping motor is added to T1 and T2. In the case of a stepping motor, the swing speed v indicates a drive signal application interval.

In step S10, after the central wind improving lower blade 19a makes one reciprocation based on the control signal, the process returns to step S1.

Further, without setting the bottom dead center holding time parameter XT1, the swing speed parameter Xv, and the top dead center position shift amount φ, based on the air flow OA and the temperature difference ΔT between the indoor set temperature tr0 and the indoor temperature ta. To determine the swing amplitude θ, and control the wind direction based on the chaos data.

The swing amplitude θ and the top dead center position shift amount φ are determined based on the air flow OA and the temperature difference ΔT between the indoor set temperature tr0 and the indoor temperature ta, and the wind direction may be controlled based on the chaos data. it can.

In this embodiment, the room temperature ta is detected. However, since the suction temperature is linked to the room temperature ta, the same effect can be obtained by using the suction temperature.

In this embodiment, the set temperature tr0
And the room temperature ta, the temperature difference ΔT is calculated. Usually, the outlet temperature and the heat exchanger temperature are linked to this temperature difference ΔT. Therefore, the same effect can be obtained by using the outlet temperature and the heat exchanger temperature.

In the present embodiment, the air flow OA is detected by measuring the wind speed at the outlet 8 using a hot wire anemometer, and the air flow OA is detected.
Therefore, a method of measuring the rotation speed of the blower fan 4 using a magnetic sensor or the like to detect the airflow OA may be used.

Tables 1 and 2 used in the description of the present embodiment
With respect to each numerical value and the number of parameters in Table 5, optimal values are set according to the performance of the air conditioner, such as the refrigeration capacity and air volume, the capacity of the microcomputer used, and the like.

In the present embodiment, the wind improving lower blade 19
Although a and 19b were described as being divided into three parts in the horizontal direction,
It is needless to say that the same effect can be obtained by dividing into two or four or the like.

The air conditioner having the above-described configuration uses the different chaos data to obtain the respective wind improving lower blades 19a, 19a.
b, the wind improving lower blades 19a,
9b can be different from each other at the same time, and at the same time, the state of fluctuation of the blowout flows can be different. , And each outlet flow has a natural fluctuation. As a result, with a single indoor unit,
A more natural airflow can be formed to improve the comfort of the living space.

[0064]

The present invention is embodied in the form described above, and has the following effects.

According to the first aspect of the present invention, based on the air flow and the difference between the set temperature and the room temperature, the upper and lower wind-upper blades swing upward and downward so that the phases of the angles differ. In order to make the air flow at the center of the air outlet and the air flow at the left and right portions of the air outlet change in different phases,
Since these blowing flows are combined to form an airflow in the entire room, an airflow close to nature can be realized, and the comfort of the living space can be improved at any airflow temperature.

According to the second aspect of the present invention, at least one of the swing amplitude, the top dead center holding time, the bottom dead center holding time, and the swing speed of the central wind improving lower blade and the left and right wind improving lower blades. Is changed over time, so that each of the blowout flows has a fluctuation, so that a more natural change can be given to the airflow in the room.

Further, according to the third aspect of the present invention, since the temporal change is controlled based on the chaos data, it is possible to give a more natural airflow change.

According to the fourth aspect of the present invention, the swing amplitude is determined based on the air flow and the temperature difference between the set temperature and the room temperature. Since the airflow is required, the airflow should be applied more to the user, and when the air volume is small and the temperature difference is small, a certain level of comfort is maintained in the room and the airflow is better. By avoiding the contact, the comfort can be further improved.

According to the fifth aspect of the present invention, the top dead center position is shifted based on the air flow and the temperature difference between the set temperature and the room temperature. Needs more airflow, so that the airflow is more direct to the user with the airflow downward, and when the airflow is small and the temperature difference is small, the room maintains a certain level of comfort and the airflow is better. Therefore, the comfort can be further improved by raising the wind direction so that the airflow does not hit the user very much.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an indoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view taken along line II of FIG. 1;

FIG. 3 is a schematic diagram showing an airflow formed by a wind direction control method according to the embodiment of the present invention.

FIG. 4A is a schematic diagram showing a relationship between chaos data used for controlling the central wind improving lower blade and the left and right wind improving lower blade. FIG.

FIG. 5 is a schematic view showing a swing operation of a wind improvement lower blade according to the embodiment of the present invention.

FIG. 6 is a control flowchart showing an outline of wind direction control in the embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a main part showing a conventional air conditioner.

FIG. 8 is a schematic view showing an air flow formed by a conventional air direction control method for an air conditioner.

[Explanation of symbols]

 Reference Signs List A Indoor unit 1 Front cover 2 Inlet 3 Heat exchanger 4 Blower fan 5 Rear guider 6 Stabilizer 7 Blower path 8 Outlet 19a Central wind improving lower blade 19b Left and right wind improving lower blade 20 Wind direction left and right blades 21a Airflow at central part of air outlet 21b Outlet flow at left and right of air outlet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Teruo Fujisha 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor ▲ Yoshi ▼ Norifumi Tsubaki 1006 Kadoma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial F term in the company (reference) 3L060 AA05 CC01 DD08 3L081 AA02 AB03 FA01

Claims (5)

[Claims] An indoor unit includes a wind-enhancing lower blade that is rotatably supported in a vertical direction by a heat exchanger, a blower fan, and an air outlet to change a wind direction in a vertical direction.
An air volume detection unit that detects an air volume, a set temperature detection unit that detects a set temperature, an indoor temperature detection unit that detects an indoor temperature, a set temperature output from the set temperature detection unit, and the indoor temperature detection unit. Temperature difference calculating means for calculating a difference between the output indoor temperatures, the air conditioner in which the wind-enhancing lower blade is divided into a plurality in the horizontal direction,
The plurality of wind-enhancing lower blades, the wind direction of one of the wind-enhancing lower blades and the wind direction of the other wind-enhancing lower blade, according to the airflow, which is an output value from the airflow detecting means, and the temperature difference output from the temperature difference calculating means. A wind direction control method for an air conditioner that swings so as to have different angular phases. 2. The swing amplitude of the wind-enhancing lower blade, the top dead center holding time, the bottom dead center holding time, and the swinging speed of at least the swing amplitude of the wind-enhancing lower blade, the top dead center holding time, the lower The wind direction control method for an air conditioner according to claim 1, wherein one of the dead center holding time and the swing speed is changed over time. 3. The wind direction control method for an air conditioner according to claim 2, wherein the means for changing the swing of the wind enhancement lower blade over time is controlled based on chaos data. 4. The wind direction of an air conditioner according to claim 3, wherein the swing amplitude of the wind-enhancing lower blade is determined in accordance with the airflow as an output value from the airflow detecting means and the temperature difference output from the temperature difference calculating means. Control method. 5. The air according to claim 3, wherein the top dead center position of the wind-enhancing lower blade is shifted in accordance with the air flow as an output value from the air flow detecting means and the temperature difference output from the temperature difference calculating means. Harmonic machine wind direction control method.