KR102344066B1 - Air conditioner and Method for controlling the same - Google Patents

Abstract

The air conditioner of the present invention includes an outdoor unit; an indoor unit connected to the outdoor unit through a refrigerant pipe; a vibration sensor mounted on a refrigerant pipe of the indoor unit to sense vibration; a variable resistor connected to the vibration sensor to adjust the sensed voltage; and a control unit provided in the indoor unit to control the operation of the outdoor unit and the indoor unit, wherein the control unit adjusts the variable resistance for each vibration component operated in the indoor unit and the outdoor unit to obtain a reference value that is the output voltage of the vibration sensor when there is no vibration It is set differently for each part and operated for each part, and when the difference between the detection voltage of the vibration sensor and the reference value is more than a predetermined value, the operation of the part is stopped.

Description

Air conditioner and method for controlling the same

The present invention relates to an air conditioner and a method for controlling the same.

An air conditioner refers to a device that cools/heats an indoor space or purifies air in order to create a more comfortable indoor environment for users.

Such an air conditioner may be divided into a separate type air conditioner in which an indoor unit and an outdoor unit are separated from each other, and an integrated air conditioner in which an indoor unit and an outdoor unit are combined into one device. In addition, a single air conditioner configured to be used in a narrow place with a capacity to drive one indoor unit according to the capacity of the air conditioner, a medium to large air conditioner configured to be used in a company or restaurant, and a plurality of indoor units It can also be divided into a multi-air conditioning system with a capacity that can sufficiently drive the air conditioner.

In this case, the separate type air conditioner includes an indoor unit installed indoors and supplying hot or cold air into the air conditioning space, and an outdoor unit that compresses or expands a refrigerant so that a sufficient heat exchange operation can be performed in the indoor unit.

The air conditioner has a cycle in which a refrigerant circulating inside is circulated in the order of compression, condensation, expansion, and evaporation to transfer heat. According to the cycle, the air conditioner operates as a cooling cycle that discharges heat from the room to the outside in summer, and in winter, it circulates in the opposite direction to the cooling cycle to supply heat to the room. It can operate as a heating cycle. .

The outdoor unit includes a compressor, a condenser, an outdoor unit fan, an expansion valve, and the like, and the indoor unit includes an evaporator, an indoor unit fan, and the like.

Recently, the structure of the air conditioner has become complicated, such as using a single outdoor unit by connecting multiple indoor units, using multiple compressors to operate the compressor by changing the operating frequency, or using a variable compressor. have.

In addition, as the operation method of the compressor is diversified, and the pressure of the refrigerant flowing through the refrigerant pipe also varies greatly depending on the operating conditions, the vibration of the pipe becomes severe, which is a major noise generating factor.

In particular, when parts that generate vibrations in the air conditioner are incorrectly assembled or installed incorrectly, and when an earthquake occurs or a breakdown or malfunction occurs, large vibrations and noises are generated, which can lead to damage to the parts.

Korean Patent Laid-Open Publication No. 10-2006-0108185 discloses an air conditioner pipe vibration analysis apparatus and method.

The disclosed air conditioner pipe vibration analysis apparatus includes an air conditioner pipe modeler that generates a vibration analysis model by dividing a mesh by inputting physical properties and conditions of the pipe, and the model generated by the pipe exclusive modeler is input according to a frequency band to vibrate It is configured to include a plurality of pipe vibration analysis means for analyzing frequencies, and post-processing means for processing each result analyzed by the plurality of pipe vibration analysis means in common.

According to this, it is said that the vibration of the entire frequency band of the pipe can be analyzed with one system.

However, the prior art does not detect and analyze the actual vibration of the air conditioner in the operating environment of the actual product, but predicts the vibration by virtually creating the product configuration and operating environment through modeling and analyzing the pipe vibration of the air conditioner therefrom. .

Vibration between the virtual model and the actual product may be different. have.

The present invention uses one vibration sensor and a variable resistor installed in a refrigerant pipe of an indoor unit to operate for each component generating vibration in an indoor unit and an outdoor unit to measure the vibration intensity, thereby preventing component damage when strong vibration occurs. .

In order to achieve the above object, an air conditioner of the present invention includes an outdoor unit; an indoor unit connected to the outdoor unit through a refrigerant pipe; a vibration sensor mounted on a refrigerant pipe of the indoor unit to sense vibration; a variable resistor connected to the vibration sensor to adjust the sensed voltage; and a control unit provided in the indoor unit to control the operation of the outdoor unit and the indoor unit, wherein the control unit adjusts the variable resistance for each vibration component operated in the indoor unit and the outdoor unit to obtain a reference value that is the output voltage of the vibration sensor when there is no vibration Each part is set differently and each part is operated so that the difference between the detection voltage of the vibration sensor and the reference value stops the part's operation.

When the difference between the detection voltage of the vibration sensor and the reference value is greater than or equal to a predetermined value, the control unit may warn that there is a problem in the vibration of the stopped component.

Preferably, the control unit sequentially operates the indoor unit fan and the indoor unit vane provided in the indoor unit, and the outdoor unit fan and the compressor provided in the outdoor unit to sense vibration intensity, respectively.

The predetermined value may be preset differently for each component according to the relative vibration intensity of each component obtained through a vibration test in which the vibration intensity is measured by individually operating the components generating vibration.

When the difference between the voltage sensed by the vibration sensor and the reference value is greater than or equal to a predetermined value, the control unit preferably displays the vibration intensity of the component on the display unit.

Preferably, the control unit provides a troubleshooting guide for the vibration of the problematic part through the display unit.

And, in the control method of the air conditioner according to the present invention, the reference value that is the output voltage of the vibration sensor when there is no vibration by turning on the air conditioner and adjusting the variable resistance connected to the vibration sensor installed in the refrigerant pipe of the indoor unit for each part converting to a reference value set differently for each part; detecting vibration with the vibration sensor by operating the selected part; comparing the sensing voltage of the vibration sensor with a reference value for each component; and when the difference between the vibration detection voltage and the reference value is greater than or equal to a predetermined value, stopping the operation of the air conditioner and warning that there is a problem in vibration of the part.

The predetermined value may be preset differently for each component according to the relative vibration intensity of each component obtained through a vibration test in which the vibration intensity is measured by individually operating the components generating vibration.

In the warning step, when the difference between the detection voltage of the vibration sensor and the reference value for each component is equal to or greater than a predetermined value, it is preferable to display the vibration intensity of the component on the display unit.

Preferably, the method further includes providing a troubleshooting guide for vibration of the problematic component through a display unit.

According to the air conditioner and its control method of the present invention, one vibration sensor is installed in the refrigerant pipe of the indoor unit, the vibration sensitivity is adjusted by adjusting a variable resistance connected to the vibration sensor, and each part is operated for a vibration test, After installing the air conditioner, the installer can test whether there is a problem with vibration for each part.

Accordingly, it is possible to determine whether each part of the air conditioner has no abnormality and is properly installed and assembled, and it is possible to substantially prevent the parts from being damaged by vibration.

1 is a schematic diagram illustrating a refrigerant flow in a refrigerant cycle of an air conditioner according to an embodiment of the present invention.
2 is a block diagram illustrating parts of an air conditioner connected to a control unit.
3 is a view showing the control method of the air conditioner according to the present invention in chronological order.
4 and 5 are flowcharts illustrating a control method of an air conditioner according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram illustrating a refrigerant flow in a refrigerant cycle of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating parts of the air conditioner connected to the control unit.

The air conditioner includes an outdoor unit 10 , an indoor unit 20 connected to the indoor unit through a refrigerant pipe, and a controller 100 for controlling the operation of the outdoor unit and the indoor unit.

The air conditioner may be classified into a ceiling type, a stand type, a wall mounted type, etc. depending on the installation type. In addition, the air conditioner may further include units such as a ventilation unit, an air cleaning unit, a humidifying unit, a dehumidifying unit, and a heater as well as an outdoor unit and an indoor unit, but a description thereof will be omitted.

The indoor unit 20 includes an indoor heat exchanger 8 for evaporating or condensing refrigerant by heat exchange with a bettor, an indoor unit fan 9, and a discharge port (not shown) for discharging the air heat-exchanged in the indoor heat exchanger. The indoor unit vane 22 is provided as a wind direction control means for opening and closing the discharge port and controlling the direction of the discharged air. The controller 100 , which is the main PCB provided in the indoor unit 20 , controls the intake air and the discharged air by controlling the rotation speed of the indoor unit fan 9 , and adjusts the air volume.

In addition, the indoor unit 20 may further include an input unit 110 for inputting setting data and a display unit 130 for displaying the operating state and setting information of the indoor unit.

The outdoor unit 10 operates in a cooling mode or a heating mode in response to a request of the connected indoor unit 20 or a control command from a remote controller, and supplies refrigerant to the indoor unit.

The outdoor unit 10 includes at least one compressor 2 that compresses an incoming refrigerant to discharge a high-pressure gas refrigerant, and an accumulator that separates gaseous refrigerant and liquid refrigerant from the refrigerant to prevent non-vaporized liquid refrigerant from flowing into the compressor (3), an oil separator (not shown) that recovers oil from the refrigerant discharged from the compressor, an outdoor heat exchanger (4) that condenses or evaporates the refrigerant by heat exchange with outside air, and more smoothly heat exchange between the outdoor heat exchanger In order to do this, the outdoor unit fan (5) that introduces air into the outdoor heat exchanger and discharges the heat-exchanged air to the outside, the four-way valve (7) that changes the refrigerant flow path according to the operation mode of the outdoor unit, and the degree of subcooling and superheating during heating operation It includes a controlled outdoor electronic expansion valve 6, at least one sensor unit 120 that measures pressure, temperature, vibration, etc., and a controller (not shown) that controls the operation of the outdoor unit and communicates with other units. .

The outdoor heat exchanger (4) acts as a condenser that sucks the gaseous refrigerant during the cooling operation of the air conditioner and condenses the sucked gaseous refrigerant by the outdoor air, and the liquid refrigerant is sucked and sucked during the heating operation of the air conditioner. Acts as an evaporator allowing the liquid refrigerant to be evaporated by the outdoor air.

The outdoor unit fan 5 is an outdoor unit fan motor 5b that generates power by being controlled by a controller (not shown) of the outdoor unit 10, and an outdoor unit fan motor 5b that generates blowing force while rotating by the power of the outdoor unit fan motor 5b. It consists of a fan 5a.

The compressor 2 includes a compressor body 2a for compressing a gas refrigerant and a compressor motor 2b for rotating a rotation shaft of the compressor.

On the other hand, the indoor heat exchanger 8 is an evaporator that cools the indoor air while the liquid refrigerant is sucked during the cooling operation of the air conditioner and the sucked liquid refrigerant is evaporated by the indoor air in which the indoor unit 20 requested for the cooling operation is installed. Acts as a condenser to increase the indoor air temperature while the gaseous refrigerant is sucked during the heating operation of the air conditioner and the sucked gaseous refrigerant is condensed by the indoor air in which the indoor unit 20 requested for the heating operation is installed.

The indoor unit fan 9 includes an indoor electric motor 9b that is controlled by the indoor unit controller 100 to generate power, and an indoor fan that is connected to the indoor electric motor 9b and rotates by the indoor electric motor 9b to generate blowing force. It consists of (9a).

In addition, the air conditioner may be configured as an air conditioner for cooling the room, or it may be configured as a heat pump for cooling or heating the room.

1 , an arrow indicated by a dotted line indicates a flow direction of the refrigerant when the air conditioner operates as a cooler, and an arrow indicated by a solid line indicates a flow direction of the refrigerant when the air conditioner is operated as a heat pump.

That is, when the air conditioner operates as the air conditioner, the refrigerant compressed in the compressor (2) is condensed while passing through the outdoor heat exchanger (4) functioning as a condenser by the four-way valve (7), and is expanded by the expansion valve (6). After being evaporated in the indoor heat exchanger (8), the indoor air is cooled. After that, it flows through the accumulator 3 through the four-way valve 7 and then flows back into the compressor 2 .

When the air conditioner operates as a heat pump, the refrigerant compressed in the compressor (2) is condensed in the indoor heat exchanger (8) by the four-way valve (7) to heat the indoor air, and after being expanded by the expansion valve (6) It evaporates in the outdoor heat exchanger (4), passes through the accumulator (3) through the four-way valve (7), and then flows back into the compressor (2).

The refrigerant passages of the indoor unit 20 and the outdoor unit 10 are connected by a refrigerant pipe, and one vibration sensor 150 for detecting the vibration is mounted on the refrigerant pipe of the indoor unit 20 .

The vibration sensor 150 is mounted on the refrigerant pipe of the indoor unit 20 in which the control unit 100 is disposed, and the vibration detection signal is directly transmitted to the control unit 100 . The vibration sensor 150 may detect vibration transmitted through a refrigerant pipe when a vibrating component in the indoor unit 20 as well as the outdoor unit 10 is operated.

The vibration sensor 150 outputs a voltage value to the controller 100 according to the vibration of the refrigerant pipe. A variable resistor 155 is connected to the vibration sensor 150 , so that a voltage value output from the vibration sensor 150 can be adjusted.

That is, by adjusting the variable resistor 155 , the sensitivity of the vibration sensor 150 may be adjusted to adjust the reference value of the output voltage. The output voltage due to vibration changes with time, showing a vertical change with reference to the reference value.

The controller 100 may set the reference value, which is the output voltage of the vibration sensor 150, differently for each component when there is no vibration by adjusting the variable resistor 155 .

In general, the voltage supplied to the control unit 100 may use a 5V DC voltage. When there is no vibration, the output voltage of the vibration sensor 150 may represent an arbitrary value between 0 and 5V rather than zero.

Therefore, when operating any one of the components that are operated in the indoor unit and the outdoor unit to generate vibration, by setting the reference value differently for each component, the vibration detection value of one component can be identified from the vibration detection value of the other component.

Most of the vibration-generating parts are parts that are rotated by a motor, and include the indoor unit fan 9 , the indoor unit vane 22 , the outdoor unit fan 5 , and the compressor 2 .

For example, the reference value of the indoor fan 9 may be 3V, the reference value of the indoor unit vane 22 may be set to 3.5V, the reference value of the outdoor fan 5 may be set to 2.5V, and the reference value of the compressor 2 may be set to 4V.

The control unit 100 may adjust the variable resistance 155 of the vibration sensor 150 to meet a preset reference value for each component in advance before sequentially operating the components causing vibration one by one.

The variable resistor 155 may be a rotary switch or a dual-in-line (DIP) switch, and may be continuously changed, but may be more easily manipulated if it can be adjusted in stages.

In addition, the variable resistor 155 may be adjusted by the user directly, but when the user inputs a vibration detection mode selection through the input unit 110 , the control unit 100 sequentially adjusts the variable resistor 155 to test vibration of vibrating components. can be done automatically.

After setting the reference value by adjusting the variable resistance for each component, the control unit 100 operates the component to stop the operation of the component when the difference between the voltage detected by the vibration sensor 150 and the reference value is greater than or equal to a predetermined value.

In this case, by stopping the operation of the vibrating component, it is possible to prevent the component or the like from being damaged due to progress.

In addition, in this case, it is preferable that the control unit 100 warns that there is a problem in the vibration of the stopped component through the display unit 130 or the sound output unit (not shown) at the same time as stopping the operation of the component. Accordingly, the user can reassemble, repair or replace the parts having a problem with vibration.

The control unit 100 sequentially operates the indoor unit fan 9 and the indoor unit vane 22 provided in the indoor unit 20, and the outdoor unit fan 5 and the compressor 2 provided in the outdoor unit 10 to increase the vibration intensity, respectively. can detect

The actual vibration intensity of each component may gradually decrease in the order of the compressor 2 being the largest, the outdoor unit fan 5, the indoor unit fan 9, and the indoor unit vane 22 being the largest. However, since the vibration sensor 150 is installed in the refrigerant pipe of the indoor unit 20, the relative vibration sensing voltage value of each component transmitted through the refrigerant pipe and sensed may differ from the actual vibration intensity. This is because the sensing voltage value varies according to the distance from the vibration sensor 150 to the vibration generating part.

The predetermined value compared with the difference between the sensed voltage of the vibration sensor 150 and the reference value is the relative vibration intensity of each component obtained through a vibration test in which the vibration-generating components are individually operated and the vibration intensity generated therefrom is measured. Accordingly, it may be preset differently for each part.

The predetermined value is pre-inputted into the control unit 100 by the manufacturer of the air conditioner, which is set in advance based on the general vibration intensity and the vibration sensed value by performing a vibration test for each part in advance on the product. The reference value is also set and provided by the manufacturer in advance.

On the other hand, when the difference between the voltage sensed by the vibration sensor 150 and the reference value is equal to or greater than a predetermined value, the controller 100 may display the vibration intensity of the component on the display unit 130 .

That is, when it is determined that there is a problem in the vibration of the vibration test component, the control unit 100 not only stops the operation of the component and warns that there is a vibration problem through a display unit, but also displays the vibration intensity of the component on the display unit 130 . can be expressed as a voltage value or the like.

The voltage value displayed on the display unit 130 may be displayed as a vibration test component, its reference value, and a detection voltage value, or a difference between the detection voltage value and the reference value may be displayed as a numerical value. In addition, since the numerical value for the difference is also a value that varies within a predetermined range, the maximum value can be displayed, or the difference value is not displayed as it is but is displayed as a relative value, or "strong", "medium", "weak" It can also be expressed as a relative intensity.

And, the control unit 100 should immediately stop the operation of the component when the vibration is strong enough to damage the component according to the vibration strength of the component, but if the vibration strength is not that strong, the user does not immediately stop the operation of the component and selects whether to stop You may.

In addition, it is preferable that the control unit 100 provides a problem solving guide for the vibration of the problematic part through the display unit 130 .

For example, when there is a problem with the vibration of the outdoor fan 5, the operation of the outdoor fan 5 is stopped and a warning is issued as described above, and a troubleshooting guide is provided to the display unit 130 to prevent the user from having a vibration problem. Allows for repair or replacement of existing parts.

The troubleshooting guide includes checking the assembly location and fastening of the outdoor fan (5), checking whether the outdoor fan motor (5b) and the outdoor fan (5a) themselves are damaged, whether it is a replaceable part and how to replace it, the location of the service center, and Contact information, etc. can be provided.

3 is a view showing the method of controlling the air conditioner according to the present invention in chronological order, and FIGS. 4 and 5 are flowcharts showing the controlling method of the air conditioner according to the present invention.

A method of controlling the air conditioner according to the present invention will be described with reference to FIGS. 3 to 5 .

When the plug of the air conditioner is inserted into the outlet, power is supplied and the user can turn the air conditioner on and operate it through the remote control or the input unit of the indoor unit.

Here, the user means an installer who installs the air conditioner and connects the refrigerant pipe and power, and the installer tests and operates the air conditioner after installation to check whether there is a vibration problem.

As shown in FIG. 3 , when a component of the air conditioner is operated through the control unit 100 in the indoor unit 20 , vibration is generated and the sensing voltage of the vibration sensor 150 is changed. At this time, if the vibration sensitivity is adjusted by adjusting the variable resistor 155, it can be determined whether the vibration intensity is large enough to be a problem.

If it is determined that the vibration of the part is large, the operation of the air conditioner is stopped and an error is displayed on the display unit to warn the user. Since vibration is eliminated when operation is stopped, the air conditioner returns to its previous state and the error display is canceled.

A method of controlling the air conditioner will be described in detail with reference to FIGS. 4 to 5 .

When the user, ie, the installer, turns on the air conditioner (S10), the air conditioner is in an initial state that can be operated according to a command.

When the installer selects the vibration detection mode (S20), the controller 100 operates the indoor fan 9 according to the control command sequence input in advance for the vibration test (S30). In this case, before the indoor fan 9 is operated, the variable resistor 155 is first adjusted so that the vibration sensor 150 outputs a reference value corresponding to the indoor fan 9 .

As a result of operating the indoor fan 9 for a predetermined time, it is determined whether a difference between the voltage detected by the vibration sensor 150 and a reference value is greater than or equal to a predetermined value (S40).

If the difference is greater than or equal to a predetermined value, the operation of the indoor fan 9 is stopped, the vibration intensity of the indoor fan 9 is displayed on the display unit, and a warning is given that there is a problem in the vibration of the indoor fan 9 ( S50 ).

Next, a troubleshooting guide for vibration of the indoor fan 9 is provided through the display unit 130 (S60).

Finally, the display of the vibration intensity and warning, etc. is canceled and returned to the original state (S70).

Above, if the difference between the detected voltage of the vibration sensor 150 and the reference value is less than a predetermined value, the next component, the indoor unit vane 22, is operated, but before that, the variable resistor 155 is adjusted to correspond to the indoor unit vane 22 is set as a reference value (S130).

It is determined whether the difference between the detected voltage of the vibration sensor 150 and the reference value is equal to or greater than a predetermined value (S140), and if so, the operation of the indoor unit vane 22 is stopped, and the vibration intensity of the indoor unit vane 22 is displayed on the display unit, , warns that there is a problem in the vibration of the vane 22 of the indoor unit (S150).

Thereafter, a troubleshooting guide for vibration of the indoor unit vane 22 is provided through the display unit 130 ( S160 ), and displays such as vibration intensity and warning are canceled and returned to the original state ( S170 ).

Above, if the difference between the detection voltage of the vibration sensor 150 and the reference value is less than a predetermined value, the outdoor unit fan 5, which is the next component, is operated, but before that, the variable resistor 155 is adjusted to correspond to the outdoor unit fan 5 is set as a reference value (S230).

It is determined whether the difference between the detected voltage of the vibration sensor 150 and the reference value is greater than or equal to a predetermined value (S240), and if so, the outdoor unit fan 5 operation is stopped, and the vibration intensity of the outdoor unit fan 5 is displayed on the display unit, , warns that there is a problem with the vibration of the outdoor fan 5 (S250).

Thereafter, a troubleshooting guide for vibration of the outdoor fan 5 is provided through the display unit 130 (S260), the display of vibration intensity and warning, etc. is canceled and returned to the original state (S270).

Next, if the difference between the voltage detected by the vibration sensor 150 and the reference value is less than a predetermined value, the compressor 2, which is the next component, is operated, but before that, the variable resistor 155 is adjusted to It is set to a corresponding reference value (S330).

It is determined whether the difference between the detected voltage of the vibration sensor 150 and the reference value is greater than or equal to a predetermined value (S340), and if so, the compressor 2 operation is stopped, and the vibration intensity of the compressor 2 is displayed on the display unit, and the compressor (2) warns that there is a problem in vibration (S350).

Thereafter, a troubleshooting guide for the vibration of the compressor 2 is provided through the display unit 130 (S360), the display of the vibration intensity and warning, etc. is canceled and returned to the original state (S370).

According to the present invention, one vibration sensor is installed in the refrigerant pipe of the indoor unit, the vibration sensitivity is adjusted by adjusting the variable resistance connected to the vibration sensor, and the vibration test is operated for each part. You can test whether there is a problem with the vibration.

Accordingly, it is possible to determine whether or not each part of the air conditioner is properly installed and assembled, and it is possible to substantially prevent the parts from being damaged by vibration.

In the above, preferred embodiments of the present invention have been described, but the scope of the present invention is not limited to these specific examples, and those of ordinary skill in the art will appropriately fit within the scope described in the claims of the present invention. change will be possible.

2: Compressor 3: Accumulator
4: Outdoor heat exchanger 5: Outdoor fan
6: Expansion valve 7: Four-way valve
8: Indoor heat exchanger 9: Indoor fan
10: outdoor unit 20: indoor unit
22: indoor unit vane 100: control unit
110: input unit 120: sensor unit
130: display unit 150: vibration sensor
155: variable resistance

Claims (10)

outdoor unit;
an indoor unit connected to the outdoor unit through a refrigerant pipe;
a vibration sensor mounted on a refrigerant pipe of the indoor unit to sense vibration;
a variable resistor connected to the vibration sensor to adjust the sensed voltage; and
a control unit provided in the indoor unit to control the operation of the outdoor unit and the indoor unit;
The control unit adjusts the variable resistance for each vibration component operated in the indoor unit and the outdoor unit to set a reference value that is an output voltage of the vibration sensor differently for each component when there is no vibration, and operates it for each component so that the detection voltage and the reference value of the vibration sensor An air conditioner, characterized in that the operation of the part is stopped when the difference between the values is greater than or equal to a predetermined value. According to claim 1,
Wherein the control unit is an air conditioner, characterized in that when the difference between the voltage sensed by the vibration sensor and the reference value is greater than or equal to a predetermined value, to warn that there is a problem in the vibration of the stopped part. According to claim 1,
The control unit sequentially operates the indoor unit fan and the indoor unit vane provided in the indoor unit, and the outdoor unit fan and the compressor provided in the outdoor unit to sense vibration intensity, respectively. 4. The method of claim 3,
The predetermined value is an air conditioner, wherein the predetermined value is preset differently for each part according to the relative vibration intensity of each part obtained through a vibration test in which the vibration intensity is measured by individually operating the parts generating vibration. . 5. The method according to any one of claims 1 to 4,
The control unit displays the vibration intensity of the component on the display unit when a difference between the voltage detected by the vibration sensor and a reference value is greater than or equal to a predetermined value. 6. The method of claim 5,
The control unit air conditioner, characterized in that for providing a problem solving guide for the vibration of the problematic part through the display unit. Turning on the air conditioner and adjusting the variable resistance connected to the vibration sensor installed in the refrigerant pipe of the indoor unit for each component to convert the reference value, which is the output voltage of the vibration sensor, into a reference value set differently for each component when there is no vibration;
detecting vibration with the vibration sensor by operating the selected part;
comparing the sensing voltage of the vibration sensor with a reference value for each component; and
When the difference between the vibration detection voltage and the reference value is greater than or equal to a predetermined value, the control method of the air conditioner comprising the step of stopping the operation of the air conditioner and warning that there is a problem in the vibration of the part. 8. The method of claim 7,
The predetermined value is an air conditioner, wherein the predetermined value is preset differently for each part according to the relative vibration intensity of each part obtained through a vibration test in which the vibration intensity is measured by individually operating the parts generating vibration. control method. 9. The method according to claim 7 or 8,
In the warning step, when the difference between the detection voltage of the vibration sensor and the reference value for each component is a predetermined value or more, the vibration intensity of the component is displayed on a display unit. 10. The method of claim 9,
The control method of the air conditioner further comprising the step of providing a problem solving guide for the vibration of the problematic part through a display unit.

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