JPH0755223A - Method of operation control of air conditioner - Google Patents

Abstract

PURPOSE:To ensure a comfortable air conditioned state in a short time by providing on an air conditioner a fan apparatus for supplying conditioned air to a room to be air-conditioned, and correcting in effecting a predetermined operation, an aimed set temperature to the side where operation capability of the air conditioner is increased and correcting the amount of air from the fan apparatus to the side where it is increased. CONSTITUTION:When a door 3 is opened and heating operation is performed with an overload, an indoor unit 4 corrects aimed set temperature to the side where operation capability of an air conditioner by raising (lowering the same upon cooling operation) the aimed set temperature by predetermined temperature. Further, the indoor unit 4 corrects the direction of fan air upwardly by increasing the amount of blow-off of conditioned air from a fan apparatus by a predetermined amount from an object set fan air amount. Provided the operation is executed only for a predetermined time, much higher temperature (lower temperature upon cooling) air B is blown off directed upward for the predetermined time from a blow-off outlet 5 in the indoor unit 4, whereby an air conditioned area is extended from a room 1 to a room 2 without overloading the indoor unit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method for an air conditioner capable of cooling and heating operation, and more particularly to an operation control method suitable when a room serving as an air conditioning load space is temporarily widened.

[0002]

2. Description of the Related Art As a conventional air conditioner, Japanese Patent Publication No. 5-7
As described in Japanese Patent No. 619, one air conditioner is generally provided for one room (one room to be conditioned).

Recently, in general households, there is a case where a continuous room separated by an openable door is provided. In a room having such a structure, it is possible to close the door and use only one of the rooms depending on the purpose of use, or open the door to connect the two and use the room widely.

In this case, for economic and structural reasons,
Air conditioners are not installed in each room, but are often installed in only one of them.

Conventionally, in such an air-conditioning environment, when two rooms are connected and widely used, the operation mode is not changed, and the temperature is naturally set based on the temperature detected by the temperature sensor of the air-conditioner. It was performing rated operation. In this state, it is the same whether it is used continuously for two minutes from the beginning, or when the door is opened while operating in only one room and it is changed to halfway from the middle. The same applies to the driving mode.

[0006]

However, when an air conditioner having a rated load in only one room is operated under a wide load in two rooms, it takes time to reach the target set temperature and a comfortable air conditioning environment is achieved. Was difficult to get.

Therefore, an object of the present invention is to provide an operation control method of an air conditioner which can obtain a comfortable air conditioning state in a relatively short time.

[0008]

In order to solve the above problems, the present invention sets a specific function and a target when an overload such as a room is expanded (when a predetermined operation is performed). Change the temperature to a temperature that is different from the target set temperature during rated load (such as in one room).
It is configured by a control algorithm that executes an operation of changing the temperature to a high temperature during heating and changing the blown air flow rate so as to be larger than that at the rated load for a predetermined time.

In a more specific mode, it is preferable that, in addition to the above-mentioned control, the blowing direction be controlled so that the blowing direction is upward and the blowing direction is far from the blowing port.

[0010]

According to the present invention, when a predetermined operation is performed, the target set temperature is changed for a predetermined time and the air flow rate is controlled to increase. Therefore, the function of supplying blown air to a distant place, that is, Due to the zoom effect, a comfortable air conditioning environment can be created in a short time even in a large space.

Since the operating time is also limited, the load on the air conditioner is small. Further, the air flow direction control as a specific mode acts to promote the above-mentioned action.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings.

(I) Principle FIG. 1 shows a conceptual diagram of an operation control method for an air conditioner according to the present invention. As shown in FIG. 1, two chambers 1 and 2 that are adjacent to each other are partitioned by a door 3 that can be opened and closed, and only one chamber 1 has an indoor unit 4 (a separate type used together with an outdoor unit 6 described later). It constitutes an air conditioner).

The indoor unit 4 (air conditioner) is an air conditioner whose rated capacity is selected according to the size of the room 1.
(See Figure 1 (a)).

When performing the air conditioning operation (for example, the heating operation) in the state shown in FIG. 1 (a), the indoor unit uses a built-in microcomputer to determine a predetermined temperature from the temperature of the room 1 (the room to be conditioned) and the target set temperature. The air-conditioning capacity (for example, the heating capacity) is controlled so that the temperature of the room 1 reaches the target set temperature by calculation, and the air-conditioning capacity is controlled to maintain the room temperature after the room temperature reaches the target set temperature.

At this time, the built-in microcomputer calculates and obtains the air A (target air flow rate) corresponding to the above control, and the air outlet 5
Is supplied to the inside of the room 1 and automatically controlled so that the user in the room 1 can always obtain a comfortable air conditioning environment.

On the other hand, the door is opened and overloaded (Fig. 1 (6)).
When the heating operation is performed in, the indoor unit 4 performs the following control.

(A) Raising the target set temperature by a predetermined temperature above the target set temperature during heating operation (lowering the target set temperature below the target set temperature by a predetermined temperature during cooling operation),
Correct to the side where the operating capacity of the air conditioner increases.

(A) The amount of conditioned air (heated / cooled air) blown by the air blower is increased by a predetermined amount from the target set air blow amount.

(C) The blowing direction (wind direction) of the conditioned air by the wind direction changing mechanism is corrected so as to be upward.

(D) The above controls (a) to (c) are executed only for a predetermined time.

The control mode in which the wind direction adjustment (c) is not executed may be used.

By the above control, as shown in FIG. 1 (b), from the outlet 5 of the indoor unit 4, a large amount of the wind B at a higher temperature (lower temperature during the cooling operation) is upward for a predetermined time. Therefore, the air conditioning range can be expanded from the room 1 to the room 2 without giving an excessive load to the indoor unit 4, and can be adjusted to a distant place like a zoom. Hereinafter, this control mode is referred to as zoom operation.

(II) Air Conditioner FIG. 2 shows an embodiment of an air conditioner for implementing the above control method. The air conditioner consists of an indoor unit 4 and an outdoor unit 6, and a compressor with variable capacity, a heat exchanger on the use side (mounted on the indoor unit 4), a four-way switching valve, a pressure reducing device, and a heat source heat exchanger on both units. A refrigeration cycle composed of (installed in the outdoor unit 6) is installed, and the use-side heat exchanger functions as a condenser during heating operation depending on the state of the four-way switching valve, and at the same time, the heat source-side heat exchanger functions as an evaporator. The heat dissipation operation (heating operation) is performed by the user side heat exchanger.

Further, depending on the state of the four-way switching valve, the utilization side heat exchanger acts as an evaporator during the cooling operation, and at the same time the heat source side heat exchanger acts as a condenser so that the utilization side heat exchanger performs a cooling operation (cooling operation). ) Is done.

In the indoor unit 4, the setting switch 1
8 (a switch for performing a predetermined operation) is a switch for instructing a zoom operation, which is provided on the wireless remote control console (or the key operation section of the indoor unit),
Outputs the zoom operation command signal to the microcomputer.

The microcomputer 11 is a ROM (Read Only Memory)
y: not shown) controls each part in the indoor unit 4 according to various operation programs including the operation control program according to the present invention stored in the communication line 1
Transmission / reception with the microcomputer 7 of the outdoor unit 6 side via 0. In the zoom operation mode, the microcomputer 11 sends an air volume control signal to the blower fan control device 12 and outputs a wind direction control signal for controlling the flap position of the flap 17 to the flap control device 15.

The blower fan control device 12 sends a corresponding drive signal to the blower fan motor 13 in response to an air volume control signal from the microcomputer 11 to control the number of revolutions of the blower fan 14 rotationally driven by the blower fan motor 13.

The flap control device 15 sends a corresponding drive signal to the flap drive motor 16 in response to the wind direction control signal from the microcomputer 11, and controls the flap position of the flap 17, which is rotationally controlled by the flap drive motor 16.

In this embodiment, as shown in FIG. 2, the flap positions of the flaps are in six stages from a flap position for blowing air in a direction substantially perpendicular to the floor surface to a flap position for blowing air in a direction substantially parallel to the floor surface. It is set. It is needless to say that stepless continuous variable may be used.

On the other hand, in the outdoor unit 6, the microcomputer 7 controls the frequency of the AC power output from the inverter power source 8 on the basis of the air conditioning capacity signal (compressor operation capacity signal) from the microcomputer 11 to control the compressor 9. Change the driving ability.

The compressor 9 is a hermetic compressor in which a three-phase induction motor and a compression section driven by the motor are housed in a single hermetic container. The operating capacity of the compressor can be controlled by changing the frequency of the three-phase AC power supplied to the phase induction motor.

Further, as a method for changing the frequency of the three-phase AC power, a general method by pulse width modulation can be used, and the details thereof will be omitted.

Further, as a method for changing the operating capacity of the compressor, a DC motor may be used as the compressor and the voltage applied to this motor may be changed.

(III) Control Operation Next, FIG. 3 shows the operation control operation by the above air conditioner. This control algorithm is executed as a subroutine of a main operation program (not shown).

The control operation in the zoom operation mode will be described below.

First, it is judged whether or not the air conditioner is in operation (step S1), and if it is in operation (YE
In S), it is determined whether or not it is the zoom operation (step 2), and then it is determined whether or not a predetermined time (for example, 50 minutes) has elapsed since the start of the zoom operation (step S3). The time of 50 minutes is a value that is empirically and experimentally determined based on the size of the load (room size) during zoom operation and the rated capacity of the air conditioner.

As a result of the determination in step S3, when the zoom operation is not completed, it is next determined whether the operation is the cooling operation or the heating operation (step S4). In the heating operation, the process proceeds to step S5, and in the cooling operation, step S1.
Go to 3.

In the heating operation, first, 30
It is determined whether or not the minutes have elapsed (step S5). If the minutes have not elapsed (NO), the process proceeds to step S6. If the minutes have elapsed, the process proceeds to step S10.

In step S6, the target set temperature is raised by 2 ° C. from the set temperature before the zoom operation is started, and the blown air temperature is raised. Then, the process proceeds to step S7.

In step S7, the target set air volume is increased by, for example, one step from the set air volume before the start of the zoom operation, and the air flow rate is increased. Next, the process proceeds to step 8.

In step S8, it is determined whether or not the wind direction control is in the neuro air flow automatic mode. The neuro air flow is a comfortable air flow created based on the PMV value obtained by a neuro calculation method as a PMV value as a feeling and comfort index. If the wind direction is not automatically adjusted (NO),
The process returns to the main program without moving the flap position. In the case of automatic wind direction adjustment (YES), the flap position is fixed at an optimum position, for example (see FIG. 2) (step S9), and the process returns to the main program.

When 30 minutes have passed since the zoom operation was started (YES in step S5), the process proceeds to step S10.

In step S10, 4 from the start of zoom operation.
It is determined whether 5 minutes have elapsed. Note that step S5
The reason for setting the stepwise time of 30 minutes in step S45 and 45 minutes in step S10 is to smooth the transition from the zoom operation to the normal operation so that a sudden change in the air conditioning environment is not felt. Until 45 minutes have passed, step S11
The target temperature setting is changed to the temperature before zoom operation by 1 ° C.

Hereinafter, the air volume control and the wind direction control are performed in step S7.
~ The process of S9 is performed. After the 45 minutes have elapsed, the target set temperature is returned to the value before the zoom operation in step S12 for 5 minutes up to 50 minutes, and thereafter, the air volume control and the wind direction control are performed in step S7.
The same process is performed in steps S9 to S9.

When the zoom operation of the heating operation is executed for 50 minutes as described above, the process proceeds to step S19,
In step S19, the set value before the zoom operation is started is returned to the operation by the main program.

In the case of the cooling operation, steps S13 to S1
By the process of 8, the zoom operation is similarly performed for 50 minutes. The zoom operation during cooling is as described above with reference to FIG.
The detailed description will be omitted because it can be easily understood by referring to. The reason why the flap position is fixed to the outdoor unit 6 and the wind direction is directed upward in step S8 during cooling is to cool the warm air in the upper part of the room with cold air.

[0048]

As described above, according to the present invention, the capacity of the installed air conditioner is utilized to the maximum extent, and even if there is an air-conditioned space having a load greater than the load that the air conditioner should bear, it can be achieved in a short time. You can quickly control to a comfortable air-conditioning condition.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of an operation control method of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a flowchart of an operation control method of the present invention.

[Explanation of symbols]

 1 room 2 room 3 units 4 indoor unit 5 outlet 6 outdoor unit

Front page continuation (72) Inventor Akira Okada 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Manabu Ishihara 2-18-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. An air conditioner that performs an operation for automatically adjusting the operating capacity of the air conditioner based on the temperature of the room to be conditioned and the target set temperature to bring the temperature of the room to reach the target set temperature. In the operation control method, an air conditioner is provided with a blower device for supplying conditioned air to a conditioned room, and when a predetermined operation is performed, the target set temperature is set to the side where the operating capacity of the air conditioner increases. A control device for an air conditioner, which is adapted to correct and at the same time to increase the air flow rate of the air blower. 2. The air conditioner includes a wind direction changing mechanism that changes a blowing direction of conditioned air, and when the predetermined operation is performed,
The air conditioner control method according to claim 1, wherein the air direction of the conditioned air is corrected by the wind direction changing mechanism so that the conditioned air is distributed throughout the conditioned room. 3. The control method for an air conditioner according to claim 2, wherein the air direction changing device corrects the conditioned air so that the air direction is upward. 4. The method of controlling an air conditioner according to claim 3, wherein each correction by the predetermined function is maintained for a predetermined time. 5. The method of controlling an air conditioner, wherein the correction range of the target set temperature is reduced as it approaches the predetermined time.