JPH08145441A - Fan control device for outdoor machine - Google Patents

Abstract

PURPOSE: To control a fan of a blower arranged in an outdoor machine and make a comfortable operation near the outdoor machine. CONSTITUTION: A freezing cycle of an air conditioner is formed by a compressor 1, a condensor 2 and an evaporator 3, wherein the condensor 2 is located within an outdoor machine B spaced apart from an indoor machine A provided with the evaporator 3, and a blower 4 is arranged near the condensor 2 so as to blow air of the blower 4 toward a front surface of the outdoor machine B. The outdoor machine B is provided with a resevering switch 5 for changing-over a rotational direction of the fan of the blower 4 and when the reversing switch 5 its operated, a blowing direction of the outdoor machine B is changed over to a rear surface so as to prevent air of the blower 4 from striking against a person. In addition, there is provided a timer which is energized when the reversing switch 5 is operated and then the timer returns the fan of the blower 4 rotating in a reverse direction to its normal rotation after elapsing a specified period of time and further an abnormal state is prevented from being generated in the freezing cycle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of a blower in an outdoor unit of an air conditioner.

[0002]

2. Description of the Related Art An air conditioner is provided with a refrigerating cycle having a compressor for compressing a refrigerant, a condenser for liquefying a high-temperature and high-pressure refrigerant compressed by the compressor, and an evaporator for evaporating the refrigerant that has become liquid in the condenser 2. ing. The condenser is located in an outdoor unit separated from the indoor unit equipped with an evaporator, and a blower is provided near the condenser.When the blower is operated, the wind blows through the condenser provided at the back of the outdoor unit. It is blowing out from the front of the outdoor unit.

[0003]

As described above, when the air conditioner is used, hot air or cold air is blown from the front of the outdoor unit, and the worker who works near the outdoor unit directly blows the hot air or cold air. May receive a. When the outdoor unit is installed for the first time, even if the air flow direction is not a problem, in the case of an outdoor unit installed on a veranda or the like, the rearrangement of the items will allow the wind to hit the operator, and Work is uncomfortable and tends to be disliked.

Further, in condominiums and apartments, an outdoor unit is often installed on a veranda in advance, and a washing machine installed on the balcony may be installed near the outdoor unit due to drainage. Workers work while directly receiving the hot and cold air blown from the outdoor unit, and sometimes work while thinking that it is hot in the summer and cold in the winter.

[0005]

In order to solve the above problems, the present invention provides a compressor 1 for compressing a refrigerant, a condenser 2 for liquefying a high temperature and high pressure refrigerant compressed by the compressor 1, and a condenser 2. A refrigeration cycle having an evaporator 3 for vaporizing the refrigerant that has become a liquid is provided, and the condenser 2 is located in an outdoor unit B separated from an indoor unit A provided with the evaporator 3 and near the condenser 2. In the air conditioner provided with the blower 4 and blowing the wind of the blower 4 toward the front surface of the outdoor unit B, the blower 4 is installed in the outdoor unit B.
The reversing switch 5 for switching the rotation direction of the fan of
A timer 6 is provided which is activated when the reversing switch 5 is operated, and the timer 6 returns the fan of the blower 4 that rotates in the reverse direction to the normal rotation after a predetermined time.

[0006]

When the reversing switch 5 is operated while the fan of the blower 4 is operating normally, the rotation direction of the fan of the blower 4 is switched, and the wind of the blower 4 goes from the front of the outdoor unit A to the condenser 2 on the back. It will come out. Then, the timer 6 is started when the reverse rotation switch 5 is operated, and the timer 6 returns the fan of the blower 4 that is rotating in the reverse direction to the normal rotation after a predetermined time. In the case of the low noise specification normal rotation fan, Although the reverse rotation operation cannot be continued for a long time, it returns to the normal rotation after a fixed time, so that it hardly affects the refrigeration cycle.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure will be described below with reference to the drawings shown in the embodiments, 1 is a compressor, 2 is a condenser, and 3 is an evaporator, and constitutes a refrigeration cycle in which a refrigerant circulates. The refrigerant is pressurized by the compressor 1 and becomes high temperature and is sent to the condenser 2, where heat is radiated and cooled to be liquefied, and the liquid refrigerant is sent to the evaporator 3 to be vaporized and to pass through the evaporator 3. And the gasified refrigerant is returned to the compressor 1 again.

Reference numeral 4 denotes a blower provided near the condenser 2 of the outdoor unit B, and the condenser 2 of the embodiment is located in the outdoor unit B apart from the indoor unit A equipped with the evaporator 3. When the blower 4 is operated, the wind blows through the condenser 2 provided at the back of the outdoor unit B and blows from the front of the outdoor unit B. Reference numeral 7 denotes an operation switch provided in the same indoor unit A as the evaporator 3. By operating the operation switch 7, the fan of the blower 4 performs normal operation.

Reference numeral 5 is a reverse switch attached to the outdoor unit B to switch the rotation direction of the fan of the blower 4, 8 is a relay which is activated when the reverse switch 5 is operated, and 9 is a reverse rotation of the fan of the blower 4 when the relay 8 is operated. When the reversing switch 5 is operated while the fan of the blower 4 is normally operating, the relay 8 operates and the switching contact 9 switches to the reverse rotation side. For this reason, the rotation direction of the fan of the blower 4 is reversed, and the blowing direction of the wind is opposite to the normal time when the front surface of the outdoor unit B is blown. Can be prevented.

Reference numeral 6 is a timer that is activated when the reverse rotation switch 5 is operated, 11 is a timer switch that expires when the timer 6 has passed a certain time, and 10 is a self-holding contact of the relay that holds the relay 8 itself. When the timer 6 and the relay 8 are activated and the relay 8 is activated, the self-holding contact 10 is turned on and the switching contact 9 is switched, and the fan of the blower 4 rotates in the reverse direction.

After that, when a certain period of time elapses, the timer switch 11 of the timer 6 is turned off, and the self-holding of the relay 8 is released, so that the switching contact 9 and the self-holding contact 10 are released.
Returns to the original state, and the fan of the blower 4 rotates forward,
The power supply to the timer 6 is stopped, and the timer switch 11
Returns.

The timer 6 is used as in the electric circuit of the embodiment.
Does not immediately return automatically when the timer switch 11 is switched, but is energized by the timer switch 11 that has been switched subsequently, and if the timer switch 11 is restored after the second set time, the blower 4 is rotated from the reverse rotation to the forward rotation. Immediately after switching to, the reverse operation cannot be performed again, and the air conditioner continues normal operation until the second set time elapses.
There is no fear that the blower 4 will frequently perform reverse rotation operation for a long time and cause trouble.

[0013]

The present invention has the above-described structure and operation, and provides a refrigeration cycle having a compressor 1, a condenser 2 and an evaporator 3, and the condenser 2 is separated from the indoor unit A having the evaporator 3. The outdoor unit B is provided with a reversing switch 5 for switching the rotation direction of the fan of the blower 4 provided near the condenser 2 in the outdoor unit B. Even if the wind of the blower blows directly on the worker when performing, the wind of the blower 4 is blown out in the opposite direction by operating the reversing switch 5, so that the person working near the outdoor unit B receives the direct wind. It no longer feels uncomfortable, either hot or cold.

When the timer 6 is started when the reverse switch 5 is operated and the fan of the blower 4 rotates in the reverse direction for a certain time, the fan of the blower 4 automatically returns to the normal rotation. Even if a fan for normal rotation is used, the fan of the blower 4 does not continue to operate in reverse rotation, and automatically returns before an abnormality occurs in the refrigeration cycle, so the air conditioner can be used without problems. .

[Brief description of drawings]

FIG. 1 is a piping diagram showing a refrigeration cycle of an air conditioner of the present invention.

FIG. 2 is a circuit diagram for controlling a blower fan of the air conditioner of the present invention.

[Explanation of symbols]

 1 Compressor 2 Condenser 3 Evaporator 4 Blower 5 Reverse Switch 6 Timer A Indoor Unit B Outdoor Unit

Claims (1)

[Claims] 1. A compressor 1 for compressing a refrigerant, a condenser 2 for liquefying a refrigerant which is compressed by the compressor 1 and has a high temperature and a high pressure, and an evaporator 3 for evaporating the refrigerant which has become a liquid in the condenser 2. Set up a refrigeration cycle,
The condenser 2 is located in the outdoor unit B separated from the indoor unit A equipped with the evaporator 3, a blower 4 is provided in the vicinity of the condenser 2, and the wind of the blower 4 is blown toward the front of the outdoor unit B. In the air conditioner to be discharged, the outdoor unit B is provided with a reversing switch 5 for switching the rotation direction of the fan of the blower 4, and a timer 6 which is started when the reversing switch 5 is operated is provided. An outdoor unit fan control device that returns the fan to normal rotation after a certain period of time.