JPH05288386A - Operation control device for outdoor fan of air conditioner - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent hunting of the outdoor fan and destabilization of the refrigerant state when returning to the heating operation after the defrosting operation of the air conditioner is completed. [Structure] An outdoor heat exchanger 3 provided with an outdoor fan 3b having a variable air volume is arranged in a refrigerant circuit 9. During the defrosting operation of the air conditioner, the fan stop control means 51 causes the outdoor fan 3 to operate.
Stop b. Before the defrosting operation is started, the detection value of the outside air temperature detecting means Tha is stored in the storage means 12, and the air volume control means 5 is operated until a certain period of time elapses after the end of the defrosting operation.
2, the outdoor fan 3 is stored in the storage means 12 in accordance with the outside air temperature before the defrosting operation is started and the outside air temperature is higher.
The air flow rate of b is controlled to be small. As a result, the fan air volume is controlled, the control is stabilized, and the refrigerant state becomes appropriate without being affected by the rise in the temperature of the outdoor heat exchanger 3 during the defrosting operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for an outdoor fan of an air conditioner, and more particularly to a measure for improving control performance when returning to normal operation after completion of defrosting operation.

[0002]

2. Description of the Related Art Conventionally, as an operation control device for an outdoor fan of an air conditioner, a compressor, an outdoor heat exchanger, a decompression mechanism and an indoor space are disclosed in a refrigerant circuit as disclosed in, for example, Japanese Unexamined Patent Publication No. 1-225852. In an air conditioner in which a heat exchanger is provided and an outdoor fan whose air flow rate is adjustable is attached to the outdoor heat exchanger, when the outside air temperature is high, by maintaining the air flow rate of the outdoor fan at a low air flow rate, It is a known technique to prevent a so-called high pressure cut due to an excessive increase in the high pressure side pressure and to maintain a smooth operating state.

[0003]

By the way, during the defrosting operation during the heating operation of the air conditioner, the outdoor fan is stopped to quickly melt the frost. In that case, however, the defrosting is performed. When the outdoor fan is operated at a low air volume when the outside air temperature is high when the operation is terminated and the normal heating operation is resumed, the following problems occur.

That is, although the outdoor fan is stopped during the defrosting operation, the outdoor air temperature sensor for detecting the outside air temperature is usually arranged on the air intake side of the outdoor heat exchanger, so that the defrosting operation is performed. When the temperature of the outdoor heat exchanger rises due to the introduction of hot gas, the outdoor air temperature sensor may be affected by the temperature of the outdoor heat exchanger and apparently detect a temperature higher than the actual outdoor air temperature. Then, when the outdoor fan is operated at a low air volume at the time of restoration by erroneously detecting that the outside air is not high outside air, the detection value of the outside air temperature sensor changes so as to decrease with the restart of the operation of the outdoor fan. There is a possibility that a kind of hunting may occur in which the air volume of the outdoor fan changes accordingly. Further, since the air volume of the outdoor fan does not correspond to the actual outside air temperature, the refrigerant state of the refrigerant circuit during the transition may deviate from the proper state, and a wet operation or a rise in oil in the compressor may occur. ..

The present invention has been made in view of the above point, and its object is to enter the defrosting operation, paying attention to the fact that the outside air temperature hardly changes before and after the defrosting operation starts. The outdoor air temperature before the operation is stored in advance, and immediately after the defrosting operation is finished and the normal heating operation is resumed, by controlling the air volume of the outdoor fan according to the outdoor air temperature before the defrosting operation is started. , To stabilize the control and optimize the state of the refrigerant.

[0006]

Means for Solving the Problems To achieve the above object, the means taken by the invention of claim 1 is, as shown in FIG. 1, provided with a compressor (1) and an outdoor fan (3b) with variable air volume. It is premised on an air conditioner including a refrigerant circuit (9) in which the outdoor heat exchanger (3), the pressure reducing mechanism (5), and the indoor heat exchanger (6) are sequentially connected.

As an operation control device for the outdoor fan of the air conditioner, a fan stop control means (51) for controlling the outdoor fan (3b) to stop during the defrosting operation of the air conditioner, and the outdoor heat. The outside air temperature detecting means (Tha) arranged on the air intake side of the exchanger (3) for detecting the outside air temperature from the intake air, and the detected value of the outside air temperature detecting means (Tha) before the start of the defrosting operation are stored. The storage means (12) for performing the defrosting operation and the outside air temperature according to the outside air temperature before the defrosting operation start stored in the storage means (12) until a predetermined time elapses after the defrosting operation ends. An air volume control means (52) for controlling the air volume of the outdoor fan (3b) to be smaller as the height is higher is provided.

According to a second aspect of the present invention, in the above first aspect of the invention, the compressor (1) is provided with an inverter, and the temperature of the inverter is predetermined as shown by the broken line portion in FIG. When the value is equal to or more than the value, a low air volume limiting means (53) is provided to limit the air volume of the outdoor fan (3b) controlled by the air volume control means (52) to a standard air volume or more.

[0009]

With the above construction, in the invention according to claim 1, when the defrosting operation is entered, the fan stop control means (51) is used to maximize the melting of the frost formed on the outdoor heat exchanger (3). Since the operation of the outdoor fan (3b) is stopped, the detected value of the outside air temperature detecting means (Tha) is apparently lower than the outside air temperature due to the temperature of the outdoor heat exchanger (3) into which the hot gas is introduced. May also rise.

Here, when returning from the defrosting operation to the normal heating operation, the outside air temperature detecting means (Tha) is stored in the storage means (12) in advance by the air volume control means (52) before the defrosting operation is started. On the basis of the detected value of, the air volume of the outdoor fan (3b) is controlled to be smaller as the outside air temperature before the defrosting starts is higher, which is caused by the influence of the temperature of the outdoor heat exchanger (3) during the defrosting. Without erroneous control
The air volume of the outdoor fan (3b) is controlled, and the refrigerant circuit (9)
The state of the refrigerant is properly maintained, and the oil (1) in the compressor (1) is prevented from rising.

In the second aspect of the invention, since the outdoor fan (3b) is stopped during the defrosting operation, there is a risk that the inverter cooled by the air blown by the outdoor fan (3b) may excessively rise. However, when the temperature of the inverter is equal to or higher than the predetermined value, the low air flow rate limiting means (53) controls the air flow rate of the outdoor fan (3b) to be equal to or higher than the standard air flow rate.
Abnormal stop due to overheating of the inverter is avoided, and smooth switching to normal heating operation is performed.

[0012]

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

FIG. 2 shows a refrigerant piping system of an air conditioner to which the present invention is applied, which is a so-called separate type in which one indoor unit (B) is connected to one outdoor unit (A). is there. The outdoor unit (A) includes a compressor (1) whose operating frequency Hz is adjusted to a plurality of step values N (= 1 to 20) by an inverter (not shown), and a solid line in the figure during cooling operation. , A four-way switching valve (2) that switches during heating operation as shown by the broken line in the figure,
A variable capacity outdoor fan (3b) is attached, an outdoor heat exchanger (3) that functions as a condenser during cooling operation and as an evaporator during heating operation, a decompression unit (20) for decompressing the refrigerant, and a compression unit. An intake pipe of the machine (1) is provided, and an accumulator (7) for removing the liquid refrigerant in the suction refrigerant is arranged as a main device. Further, the indoor unit (B) is provided with an indoor heat exchanger (6) that functions as an evaporator during cooling operation and as a condenser during heating operation. The above-mentioned devices are sequentially connected by a refrigerant pipe (8), and a refrigerant circuit (9) is configured so that heat is transferred by circulating the refrigerant.

The pressure reducing section (20) is provided with a receiver (4) for storing the liquid refrigerant and an electric expansion valve (5) having a pressure reducing function and a flow rate adjusting function for the liquid refrigerant. The receiver (4) and the electric expansion valve (5) are disposed so that the electric expansion valve (5) communicates with the lower portion of the receiver (4), that is, the liquid portion. ) Auxiliary heat exchanger (3a)
Are arranged in series on the common path (8a). Then, between the outdoor end (P) of the receiver (4) upstream of the common path (8a) and the outdoor heat exchanger (3), the outdoor heat exchanger (3) goes to the receiver (4). Between the point (P) of the common path (8a) and the indoor heat exchanger (6) by the first inflow path (8b1) via the first check valve (D1) that allows only the circulation of the refrigerant of Is from the indoor heat exchanger (6) to the receiver (4)
The electric expansion valve (5) and the like on the common path (8a), while being connected to each other by the second inflow path (8b2) through the second check valve (D2) that allows only the flow of the refrigerant to the Between the end portion (Q) on the end side and the point (R) between the second check valve (D2) and the indoor heat exchanger (6), the electric expansion valve (5) is connected to the indoor heat exchanger (6). The first check valve (D1) and the point (Q) of the common path (8a) by the first outflow passage (8c1) through the third check valve (D3) that allows only the flow of the refrigerant to the first check valve (D1). A fourth check valve (D4) which allows only the flow of the refrigerant from the electric expansion valve (5) to the outdoor heat exchanger (3) between the outdoor heat exchanger (3) and the point (S). Through the 2nd outflow path (8c2)
Are connected to each other.

Further, a capillary tube (C) is interposed between a point (P) on the upstream side and a point (Q) on the outflow side of the receiver (4) to prevent liquid sealing. Bypass road (8f)
Is provided, and the liquid sealing prevention bypass passage (8f) prevents liquid sealing when the compressor (1) is stopped. In addition, the bypass pipe (by which the gas refrigerant is bypassed from the upper portion of the receiver (4) to the downstream side of the electric expansion valve (5) via the on-off valve (SV) to ensure the refrigerant reservoir function of the receiver (4) ( 4a) is provided. The degree of pressure reduction of the capillary tube (C) is set to be sufficiently larger than that of the electric expansion valve (5),
The function of adjusting the refrigerant flow rate by the electric expansion valve (5) during normal operation can be favorably maintained.

Incidentally, (F1) to (F4) are filters for removing dust in the refrigerant, and (ER) is a silencer for reducing the operation noise of the compressor (1).

Further, the air conditioner is provided with sensors, (Th2) is arranged in the discharge pipe, the discharge pipe sensor detects the discharge pipe temperature T2, and (Tha) is the air of the outdoor unit (A). An outdoor suction sensor (Thc), which is arranged at the suction port and detects the intake air temperature Ta that is the outside air temperature, is arranged at the outdoor heat exchanger (3) and is used for the condensing temperature T during the cooling operation.
c is an external heat exchange sensor that detects the evaporation temperature Te during heating operation, (Thr) is an indoor suction sensor that is arranged at the air suction port of the indoor unit (B), and that detects the suction air temperature that is the indoor temperature, (The) Is arranged in the indoor heat exchanger (6), and the evaporation temperature Te during the cooling operation is changed to the condensation temperature T during the heating operation.
An internal heat exchange sensor for detecting c (high pressure side pressure), (HPS) is a high pressure switch that is turned on by the excessive increase of the high pressure side pressure and activates the protection device (11) described later, and (LPS) is the low pressure side pressure. Turns on due to excessive decrease of the protection device (11)
Is a low pressure switch that activates the. The signals of the sensors are connected to a controller (10) that controls the operation of the air conditioner, and the controller (10) operates the air conditioner according to the signals of the sensors. Is designed to control.

In the controller (10),
Protective device (11) that operates when an abnormality occurs during operation of the air conditioner to abnormally stop the air conditioner
And a storage device (12) as storage means for storing operation data and the like. Although not shown, the protection device (11) includes the high-low voltage switch (H
PS), (LPS) signals are input, and if the high-pressure side pressure rises excessively or the low-pressure side pressure falls excessively, the protective device (11) operates and abnormally stops the air conditioner, so-called high-pressure cut It is designed to perform low pressure cut.

In the refrigerant circuit (9), during cooling operation, the liquid refrigerant condensed and liquefied in the outdoor heat exchanger (3) flows in from the first inflow passage (8b1), and the first check valve (D1) is turned on. After being stored in the receiver (4) and decompressed by the electric expansion valve (5), it is evaporated in the indoor heat exchanger (6) through the first outflow passage (8c1) and returned to the compressor (1). While becoming a cycle,
During the heating operation, the liquid refrigerant condensed and liquefied in the indoor heat exchanger (6) flows in from the second inflow passage (8b2), is stored in the receiver (4) via the second check valve (D2), After the pressure is reduced by the electric expansion valve (5), it is circulated through the second outflow passage (8c2) to evaporate in the outdoor heat exchanger (3) and return to the compressor (1).

At this time, the opening degree of the electric expansion valve (5) is set with the discharge pipe temperature T2 detected by the discharge pipe sensor (Th2) as a parameter. That is, the discharge pipe temperature (optimum temperature Tk) that gives the optimum refrigerating effect is calculated from the condensation temperature and the evaporation temperature detected by the external heat exchange sensor (Thc) and the internal heat exchange sensor (The), and the discharge pipe temperature is calculated. The opening of the electric expansion valve (5) is controlled so that T2 becomes the optimum temperature Tk.

Next, the control contents of the outdoor fan (3b) during the heating operation of the air conditioner will be described based on the flowcharts of FIGS. 3 and 4.

FIG. 3 shows the control contents during the normal heating operation. In step ST1, the count TH2 of the fan air flow rate control timer is reset when the high pressure side pressure Tc is above a predetermined value (for example, about 57.5 ° C.). , At step ST2,
When the internal heat exchange sensor (The) for detecting the high pressure side pressure Tc is abnormal, it is determined whether the heat exchange flag FTc is "1", and if FTc = 1, the sensor is normal. If so, the control from step ST3 onward is executed.

First, in step ST3, Tc <50-X
Whether or not it is H1 (° C) (XH1 is a switching variable that becomes "2" when the compressor (1) is on and "0" when it is off),
If Tc <50-XH1, proceed to step ST4,
Further, it is determined whether or not the fan air volume is a low air volume "L". If the determination result is YES, step ST5
And reset the count TH5 of the hunting prevention timer, which measures the time when the fan air volume shifts from the low air volume "L" to the standard air volume "H", to "0", and then in step ST6 The timer starts counting, and in step ST7, the fan air volume is set to the standard air volume "H".
Then, in step ST8, the high pressure increase variable dN4 is changed to "-
1 ”and returns.

If it is determined in step ST4 that the fan air volume is not low "L", step ST9
Then, it is determined whether or not the fan air volume is the standard air volume “H”. When the fan air volume is the standard air volume “H”, the process proceeds to step ST10, and either TH5 = 0 or TH5 = 5 (minutes). It is determined whether or not there is, and if any, step S
In T11, it is further determined whether the outside air temperature Ta detected by the outdoor suction sensor (Tha) is lower than 3 (° C). Then, if Ta <3 (° C.), it is determined that the outside air state is low, the process proceeds to step ST12, resets to TH5 = 0, and then in step ST13, the fan air volume is switched to the high air volume “HH” to set the low pressure side. Control is performed to prevent low pressure cut due to excessive pressure drop.

On the other hand, when FTc = 1, that is, the internal heat exchange sensor (The) is abnormal, or when the sensor is not abnormal but Tc ≧ 50-XH1, the high-pressure side pressure Tc is determined by the determination in steps ST2 and ST3. When the temperature is high, the process proceeds to step ST14 and the fin temperature T of the inverter is exceeded.
Switch to air volume control based on fin and outside air temperature Ta. That is, in step ST14, the fin temperature Tfin is 80
It is determined whether the temperature is higher than (° C.). If Tfin ≧ 80 (° C.), the process proceeds to step ST15, and it is further determined whether the outside air temperature Ta is higher than 4 (° C.) and Ta> 4 (° C.). If it is), the flow proceeds to the control of step ST7 and the fan air volume is controlled to the standard air volume "H", but if Ta> 4 (° C), the current fan air volume is not changed and the process returns. Incidentally, the above-mentioned steps ST9, 10, 11
Even when the determination result in step S15 is NO, step ST15
Control.

If the determination result in step ST14 is Tfin ≧ 80 (° C.), there is a risk of overheating of the inverter. Therefore, control is passed to step ST16, and the fan air volume is low “L”. If the air volume is low, the fan air volume is controlled to the standard air volume "H" in step ST17, and the high pressure increase variable dN4 is set to "-1" in step ST18. If it is not "L", it is judged that there is no risk of overheating of the inverter, and the flow returns without changing the current air volume.

Next, FIG. 4 shows a part of the control at the time of entering the defrosting operation. In step SR1, when the defrosting start command is received,
In step SR2, the four-way switching valve (2) is turned off, that is, switched to the cooling cycle side, and in step SR3, the flag F11 for switching the inverter frequency control is set to "1" (mode during cooling), and then step At SR3, the outdoor fan (3b) is stopped to maximize the heating effect of the outdoor heat exchanger (3) by the introduction of hot gas, and at step SR4, the indoor fan (3b) is prevented to prevent the air conditioning effect from being deteriorated. (Not shown) is stopped. Although not shown in the flow, the outside air temperature Ta detected by the outdoor suction sensor (Tha) is set to the outside air temperature X before defrosting before the start of the defrosting operation.
The data is stored in the storage device (12) as D4.

Next, FIG. 5 shows the contents of the air volume control of the outdoor fan (3b) after the defrosting operation is completed, and step S
In S1, it is determined whether or not the post-defrost flag FD3, which becomes “1” only for 3 minutes after the defrost is “1”, and if FD3 = 1, the process proceeds to step SS2 and after the defrost is completed. It is determined whether or not the count TD6 of the end timer for measuring the elapsed time is 5 seconds or more, and until 5 seconds have passed after the defrosting is completed, the process proceeds to step SS3, and the fan air volume is controlled to the standard air volume "H". That is, the outdoor fan (3b) is started up with the standard air volume "H". On the other hand, when 5 seconds have elapsed after the recovery, the process proceeds to step SS4, and it is determined whether the outside air temperature XD4 before defrost stored in the storage device (12) is equal to or lower than the predetermined temperature 3 (° C), and XD4≤ If it is 3 (° C), step SS5
Then, the fan air volume is switched to the high air volume "HH". Further, in step SS6, it is determined whether or not Tfin ≧ 80 (° C.),
If Tfin ≧ 80 (° C.), in step SS7, X
It is determined whether or not D4 ≦ 10 (° C.), and if it is not XD4 ≦ 10 (° C.), the flow proceeds to step SS8 to switch the fan air volume to the low air volume “L”.

On the other hand, FD2 =
If not 1, Tfin ≧ 80 in the determination of step SS6
When (° C), XD4 ≤ 10 in the judgment of step SS7.
When the temperature is (° C.), the fan air flow rate is kept at the standard air flow rate “H” or the high air flow rate “HH” and the process returns.

That is, immediately after returning from the defrosting operation,
Standard air volume "H" to ensure the startup of the outdoor fan (3b)
After that, when the outside air temperature XD4 before defrosting is 3 ° C or less, it is high air volume “HH”, when it is 3 ° C to 10 ° C, it is standard air volume “H”, and when it exceeds 10 ° C, low air volume “L”. To control. That is, the air volume of the outdoor fan (3b) is controlled to be smaller as the outside air temperature Ta before defrosting is higher. However, when the fin thermal temperature of the inverter becomes 80 (° C.) or higher, the inverter may overheat and the protection device (11) may operate. Therefore, the fan air volume is higher than the standard air volume “H”, that is, the low air volume “H”. It is restricted not to be "L".

In the above flow, the control of step SR4 constitutes the fan stop control means (51) according to the invention of claim 1, and the control of steps SS3 to SS8 constitutes the air volume control means (52). .. Also,
The low air flow rate limiting means (53) according to the invention of claim 2 is configured by the control that returns without performing the control of steps SS6 to SS7.

Therefore, in the above embodiment, during the heating operation, the air flow rate of the outdoor fan (3b) is basically controlled based on the high pressure side pressure Tc, and when the defrosting operation is entered, the outdoor heat exchanger (3 ), The outdoor fan (3b) is controlled by the fan stop control means (51).
Is stopped.

On the other hand, when returning from the defrosting operation to the normal heating operation, if the outside air temperature Ta is particularly high, the high-pressure side pressure may excessively rise, leading to high-pressure cut.
High pressure cut can be avoided by controlling the fan air flow rate. However, since the outdoor fan (3b) is stopped during the defrosting operation, the detected value of the outdoor suction sensor (Tha) is apparently high due to the temperature of the outdoor heat exchanger (3). Sometimes. Therefore, if the outside air temperature Ta is erroneously determined to be high even though it is low, and if the fan air volume is controlled to be low, the suction sensor (Tha) will be started when the outdoor fan (3b) starts operating.
Of the outdoor fan (3b) is changed to cause a kind of hunting, or the refrigerant state of the refrigerant circuit (9) deviates from an appropriate state, resulting in wet operation or oil in the compressor (1). There is a risk of rising or the like.

Here, in the above embodiment, the detected value XD4 of the outdoor suction sensor (Tha) before the start of the defrosting operation is stored in the storage device (12) in advance, and the air flow rate is restored when returning from the defrosting operation. Since the control means (52) controls the fan air flow rate based on the outside air temperature XD4 before the start of defrosting, it is possible to effectively prevent the occurrence of the abnormal state such as the oil rising described above. Therefore, the control performance can be improved.

During the defrosting operation, the outdoor fan (3
Since b) is stopped, there is a possibility that the inverter cooled by the blowing of the outdoor fan (3b) may excessively rise. Here, in the above embodiment, the low air flow rate limiting means (5
According to 3), when the fin thermal temperature Tfin of the inverter is equal to or higher than a predetermined value (80 ° C. in the above embodiment), the air volume of the outdoor fan (3b) is prevented from becoming the low air volume “L”, that is, the standard air volume “H” or high. Since the air volume is controlled to "HH", the operation of the protection device (11) due to overheating of the inverter is avoided, and the smooth switching to the normal heating operation is performed.

Although the compressor (1) is equipped with an inverter in the above embodiment, the invention of claim 1 is not limited to this embodiment, and is provided with a fully enclosed compressor and an unloader. It goes without saying that it may be a compressor.

In the above embodiment, the outdoor fan (3
Although the air volume in b) is switched by tapping, it can be applied to the one in which the air volume is continuously variable by the inverter.

[0038]

As described above, according to the first aspect of the present invention, the defrosting operation is performed as the operation control device for the outdoor fan of the air conditioner including the outdoor heat exchanger provided with the outdoor fan whose air volume is variable. The outdoor temperature detected before the start is stored, the operation of the outdoor fan is stopped during the defrosting operation, and immediately after returning to the heating operation after the end of the defrosting operation,
Since the outdoor fan air volume is controlled to decrease as the outside air temperature before defrosting starts, the outdoor fan air volume is controlled with accurate judgment without being affected by the outdoor heat exchanger temperature during defrosting. Therefore, it is possible to stabilize the control immediately after the recovery and optimize the refrigerant state.

According to the invention of claim 2, in the invention of claim 1, when the inverter temperature is equal to or higher than a predetermined value, the air flow rate of the outdoor fan is limited to the standard air flow rate or more. It is possible to smoothly switch to the heating operation without causing a stop.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of the present invention.

FIG. 2 is a refrigerant piping system diagram of the air conditioning apparatus according to the embodiment.

FIG. 3 is a flowchart showing the contents of fan air volume control during heating operation.

FIG. 4 is a flowchart showing a part of control at the start of defrosting operation.

FIG. 5 is a flowchart showing the contents of fan air volume control immediately after returning from the defrosting operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 3 Outdoor heat exchanger 3b Outdoor fan 5 Electric expansion valve (Decompression mechanism) 6 Indoor heat exchanger 9 Refrigerant circuit 12 Memory device (Memory means) 51 Fan stop control means 52 Air volume control means 53 Low air volume control means Tha Outdoor Suction sensor (outside air temperature detection means)

Claims (2)

[Claims] 1. A refrigerant comprising a compressor (1), an outdoor heat exchanger (3) provided with an outdoor fan (3b) of variable air volume, a pressure reducing mechanism (5) and an indoor heat exchanger (6), which are sequentially connected. In an air conditioner provided with a circuit (9), fan stop control means (51) for controlling the outdoor fan (3b) to stop during defrosting operation of the air conditioner.
And an outside air temperature detecting means (Tha) arranged on the air intake side of the outdoor heat exchanger (3) for detecting the outside air temperature from the intake air.
And the outside air temperature detecting means (Tha) before the defrosting operation starts
The storage means (12) for storing the detected value of the, and the outside air temperature before the start of the defrosting operation stored in the storage means (12) until a fixed time elapses after the end of the defrosting operation. Accordingly, the higher the outside air temperature, the more the outdoor fan (3
Air volume control means (5) for controlling the air volume of b) to be small.
2) An operation control device for an outdoor fan of an air conditioner, comprising: 2. The outdoor fan operation control device for an air conditioner according to claim 1, wherein the compressor (1) is provided with an inverter, and when the temperature of the inverter is equal to or higher than a predetermined value, the air volume control means. An operation control device for an outdoor fan of an air conditioner, comprising low air flow rate limiting means (53) for limiting the air flow rate of the outdoor fan (3b) controlled by (52) to a standard air flow rate or more.