KR100247745B1 - Performance test equipment and control method therefor for air conditioner outdoor unit - Google Patents

Abstract

The present invention provides a performance inspection system and a control method of the cooling only package air conditioner outdoor unit capable of performing the performance inspection of all balanced cooling only air conditioner outdoor unit as well as the inspection and determination automatically. The present invention is divided into a test section, a data transmission section and the test end section is a conveyor for sequentially transporting the air conditioner outdoor unit; At least one cooling load variable performance capable of measuring the pressure while changing the cooling load according to the capacity change of the outdoor unit by measuring the pressure while circulating the refrigerant connected to the connecting pipe to the air conditioner outdoor unit transported by the conveyor Inspection device; A trolley conveyor for transferring the performance tester at the same speed as that of the air conditioner outdoor unit and a power rail for supplying power in parallel with the trolley conveyor; The pressure and / or error mode measured by the pressure sensor of the performance tester is displayed and the sum or part of the product is determined based on the measured data, and the cooling load of the performance tester is varied according to the capacity change of the outdoor unit. Controlling device; A data transmission position sensor installed between an inspection section and a data transmission section of the conveyor to switch a work mode; And a reset position sensor installed at the end of the inspection end section of the conveyor, characterized in that all inspections and determinations are made automatically.

Description

Performance test system and control method of air conditioner outdoor unit

The present invention relates to a performance inspection system for a cooling only package air conditioner outdoor unit which performs a basic performance test on the assembled package air conditioner outdoor unit and determines a sum or a part thereof, and a control method thereof.

There is a process of determining a final sum or a part by performing a basic performance test on a product assembled as a final step of the air conditioner outdoor unit manufacturing process. The performance test for the outdoor unit of the air conditioner as described above is connected to the performance tester on the product transported on the conveyor to measure the pressure while circulating the refrigerant for a predetermined time to determine the final sum, part of the product. If the pressure shown in the pressure gauge is within the setting range, it is determined to pass.

A typical example of the inspection system used for the performance inspection of the air conditioner outdoor unit as described above is shown in FIG. 1, which is briefly described as follows.

The figure schematically shows a performance test system of a general air conditioner outdoor unit for cooling only, in the drawing, 1 is an air conditioner outdoor unit under test, 2 is a performance tester, 3 is a connecting pipe, and 4 is a pressure gauge.

As shown, the air conditioner outdoor unit 1 is configured to sequentially move on a conveyor (not shown), and the performance tester 2 is suspended from a trolley conveyor (not shown) installed at the top of the outdoor unit 1. Is moving at about the same speed as In addition, the air conditioner outdoor unit 1 and the performance tester 2 is connected by a connecting pipe 3, the pressure gauge 4 is provided on one side of the performance tester (2).

The performance test system of the general package air conditioner outdoor unit configured as described above operates the start switch and simultaneously starts the outdoor unit of the air conditioner, and the refrigerant in the outdoor unit is circulated through the performance test device through the connection pipe. The pressure of the refrigerant is displayed on the pressure gauge, and the inspector determines the sum of the parts by looking at the pressure appearing on the pressure gauge after a certain time.

However, as described above, the performance inspection system of a general air conditioner outdoor unit for cooling only is a visual inspection system in which an analog pressure gauge is attached to a performance inspection device to determine the sum or part of the pressure gauge. Due to the lack of accuracy and lack of accuracy, the reliability of the test was problematic.

In addition, the conventional performance inspection system is configured to inspect only the outdoor unit for one balance in structure, so that the inspection can not be changed while varying to the appropriate load according to the capacity change of the air conditioner outdoor unit, not only the reliability of the inspection is also troublesome, There was a problem. For example, in performing the performance test for the air conditioner outdoor unit for exclusive use of cooling, we have several performance test devices with capacity for each equilibrium, and change them to the appropriate performance test device whenever the product specification changes. Work was being done or the assembly line was different. Therefore, deterioration of the quality due to reduced reliability of the inspection as well as decrease in productivity was inevitable.

In addition, the conventional performance test system is not equipped with a device or structure that displays when an abnormal operation, for example, is stopped or restarted due to an abnormal occurrence (temporary power failure, etc.) during operation, or in the event of an error in the system. Should always be tired, and moreover, there was a problem that caused a bad air conditioner to be shipped due to an error of the sum or a negative judgment due to the accident as described above.

The present invention has been made in view of the above-mentioned, and by automatically controlling the performance test and sum and negative judgment for the cooling air conditioner outdoor unit, the microcomputer eliminates the determination error due to visual inspection and improves the reliability of the inspection. It is an object of the present invention to provide a performance inspection system and a control method of the air conditioner outdoor unit for a dedicated air conditioning package.

It is another object of the present invention to continuously perform a performance test for all balanced cooling air conditioner outdoor units in one line without replacing the performance testing device while varying the proper cooling load according to the capacity change of the cooling air conditioner outdoor unit to be assembled. The present invention provides a performance inspection system and a control method thereof for a cooling only package air conditioner outdoor unit.

Another object of the present invention, when the power is turned off due to abnormal operation during operation of the system, for example, a temporary power failure, it detects this and informs the operator and at the same time memorizes the data measured until just before the accident to restart continuously The present invention provides a performance inspection system and a control method of the air conditioner outdoor unit for exclusive use of a cooling system, which enables inspection and can accurately check the progress of the inspection as measured data without the operator having to worry about it.

1 is a schematic diagram of a performance test system of a typical packaged air conditioner outdoor unit.

Figure 2 is a partial perspective view showing a schematic configuration of the performance test system of the air conditioner outdoor unit for cooling only package according to the present invention.

Figure 3 is a schematic diagram showing the inspection interval of the air conditioner outdoor unit performance inspection system dedicated to cooling according to the present invention.

Figure 4 is a schematic diagram showing the configuration of the refrigeration cycle and the outdoor unit connection state for the performance test device of the performance test system of the present invention.

5 is a block diagram of a microcomputer of the present invention performance testing system.

FIG. 6 is a control flowchart for the microcomputer shown in FIG. 5; FIG.

7a to 7c is a flow chart for the control method of the air conditioner outdoor unit performance test system of the present invention dedicated cooling package.

8a and 8b is a flow chart for the section-by-section control method of the air conditioner outdoor unit performance inspection system of the present invention dedicated air conditioning.

Explanation of symbols on the main parts of the drawings

10; Air conditioner outdoor unit 11; Conveyor

12; trolley conveyor 13; power rail

15; data transmission position sensor 16; reset position sensor

20; performance inspection device 30; connection piping

40; control unit 41; sensor unit

42; position sensor unit 43; pressure sensor display unit

44; switch section 44-1; start switch

44-3; Inverter 44-4; Capacity selector switch

45; drive display unit 45-1; light emitting diode

45-2; drive IC 46; drive part

46-1; Relay 46-2; Drive IC

47; microcomputer 48; data transmitter

49; oscillation unit 50; power supply unit

100; heat exchanger 111 to 115; heat exchanger

120; high pressure side refrigerant line 130; low pressure side refrigerant line

140; pressure sensor 150 to 154; shutoff valve

160; capillary tube 170; auxiliary refrigerant line

Secondary capillary tube 172 solenoid valve

According to an aspect of the present invention, there is provided a performance inspection system for an air conditioning outdoor unit for cooling only according to the present invention, the conveyor being divided into an inspection section, a data transmission section, and an inspection end section to sequentially transport the air conditioner outdoor unit; At least one cooling load variable performance capable of measuring the pressure while changing the cooling load according to the capacity change of the outdoor unit by measuring the pressure while circulating the refrigerant connected to the connecting pipe to the air conditioner outdoor unit transported by the conveyor Inspection device; A trolley conveyor for transferring the performance tester at the same speed as that of the air conditioner outdoor unit and a power rail for supplying power in parallel with the trolley conveyor; The pressure and / or error mode measured by the pressure sensor of the performance tester is displayed and the sum or part of the product is determined based on the measured data, and the cooling load of the performance tester is varied according to the capacity change of the outdoor unit. Controlling device; A data transmission position sensor installed between an inspection section and a data transmission section of the conveyor to switch a work mode; And a reset position sensor installed at the end of the inspection end section of the conveyor, characterized in that all inspections and determinations are made automatically.

Here, the performance testing device is connected to the refrigerant line of the outdoor unit of the air conditioner under test, a high, low pressure side refrigerant line to form a closed circulation path; A heat exchanger installed in the middle of the refrigerant line, the heat exchanger being divided into at least two heat exchangers and connected to and installed in parallel with the refrigerant line; A shutoff valve for selectively blocking a flow path to each of the heat exchangers of the heat exchanger; A capillary tube connected to and installed on the high pressure side refrigerant line; And a pressure sensor for measuring the pressure of the refrigerant circulating through the refrigerant line. The heat exchanger may be partitioned into heat exchangers of two, three, four, or five stages, and the shutoff valves installed at the refrigerant line connection portions of the respective heat exchangers may be configured to be opened or closed manually or automatically. . In addition, the performance test apparatus of the present invention is provided with at least one auxiliary refrigerant line in parallel in the high-pressure side refrigerant pipe, the auxiliary capillary tube and the solenoid valve for opening and closing the line is installed in the main capillary tube It is configured to assist the action of.

The control device may include a sensor unit receiving a signal from a pressure sensor, a temperature sensor, and a current sensor; A position sensor unit receiving a signal from a data transmission position sensor and a reset position sensor; A pressure sensor display unit for displaying pressure data input from the pressure sensor of the sensor unit; A switch unit receiving a signal from a start switch, an inverter, and a balance selection capacity selection switch; A driving display unit for displaying the driving of the shut-off valve according to the selection of the capacity selection switch for each balanced unit of the switch unit; A driving unit for driving the corresponding valve according to the selection of the capacity selection switch for each balance unit of the switch unit; A microcomputer that analyzes signals input from these sensors and switches, determines and stores sums and portions, and calculates and controls inputs and outputs; A data transmitter for transmitting the data stored in the microcomputer to an external computer; An oscillator for generating a pulse required for driving the microcomputer; And a power supply unit.

The performance test system of the air conditioner outdoor unit for cooling only according to the present invention, when the performance tester is connected to the package air conditioner outdoor unit transported by a conveyor and presses a start switch, the system starts and the refrigerant is circulated. The pressure of the refrigerant is measured to determine the sum or part. The measured pressure data is displayed on the control device and the sum is added automatically by the microcomputer of the control device. When the capacity of the air conditioner outdoor unit is changed, when the capacity selection switch for each capacity unit provided in the control device is operated, such an operation is displayed on the driving display unit and the corresponding shutoff valve is automatically selected and driven to be changed to an appropriate cooling load. The test will proceed. That is, the present invention can increase the reliability of the inspection because all inspections and determinations for the performance inspection of the package air conditioner outdoor unit is automatically performed by the microcomputer control, and the cooling only package of all equilibrium without replacing the inspection apparatus in another line. Since the performance test can be performed on the outdoor unit of the air conditioner, the product quality and productivity can be improved.

On the other hand, the control method of the air conditioner outdoor unit performance inspection system dedicated to cooling according to the present invention for achieving the above object comprises the steps of: inputting information about the air conditioner outdoor unit to be tested; Analyzing the input information on the object under test and setting the cooling load of the performance test apparatus according to the corresponding model and capacity and displaying the initial pressure; Inspection and inspection data storage step; Analyzing the stored test data to check the measured pressure value and the test duration, and displaying a corresponding error mode in case of abnormal results; An abnormal operation detection step of detecting whether a power failure and / or a system error has occurred and proceeding to the step to determine and display whether the work is in progress; Analyzing the inspection result to determine a sum or a part and transmitting the stored data; A second abnormal operation detection step of detecting and displaying an abnormal operation in the data transmission step to determine whether the operation is in progress; And a job termination step of erasing all measured data and waiting for the initial state.

Best Mode for Carrying Out the Invention Preferred embodiments of the present invention will now be described based on the accompanying drawings.

Figure 2 is a partial perspective view showing a schematic configuration of the performance test system of the air conditioner outdoor unit for cooling only according to the present invention, Figure 3 is a schematic diagram showing the inspection interval of the performance test system for air conditioner only packaged according to the present invention, Figure 4 is a schematic diagram showing the configuration of the refrigeration cycle and the outdoor unit connected to the performance tester of the performance test system of the present invention, Figure 5 is a block diagram of the microcomputer of the performance test system of the present invention, Figure 6 is shown in FIG. This is a control flowchart for the microcomputer.

As shown in the drawing, the air conditioner outdoor unit 10 under test is configured to be transported on the conveyor 11. The performance tester 20 is connected to the air conditioner outdoor unit 10 transferred as described above by the connection pipe 30.

The performance inspection apparatus 20 is installed on the trolley conveyor 12 disposed on the upper portion of the conveyor 11, and is transported at about the same speed as the air conditioner outdoor unit 10. In addition, a power rail 13 for supplying power to the performance testing device 20 is provided adjacent to the trolley conveyor 12 described above.

As shown in FIG. 3, the conveyor 11 is divided into an inspection section 11a, a data transmission section 11c, and a job end section 11d, and the inspection section 11a and the data transmission section. A data transmission position sensor 15 is provided at the boundary of 11c, and a reset position sensor 16 is provided at the end of the work end section 11d. Each of these position sensors is configured to sequentially make contact by moving the air conditioner outdoor unit 10. The position sensors 15 and 16 as described above are limit switches, and their 'on' contact switches the working mode. For example, when the data transmission position sensor 15 is touched, the inspection is completed and the mode is switched to the mode for transmitting the measured data. When the reset position sensor 16 is touched, all data are erased and the system returns to the initial state. I will go. Such control is performed by a control device described later.

4, the high-pressure side refrigerant line 120 and the low-pressure side refrigerant line 130 are installed at both sides of the heat exchanger 100 so as to be connected to the air conditioner outdoor unit 10. The low pressure side refrigerant line 130 is provided with a pressure sensor 140 for checking the pressure of the refrigerant circulating there, the high pressure side refrigerant line 120 is connected to the capillary tube 160, It is installed.

The heat exchanger 100 is divided into heat exchange parts 111, 112, 113, 114, and 115 of five stages, and the heat exchangers 111, 112, 113, and 114 that are partitioned in this manner are divided into five parts. 115 is connected and installed in parallel with the refrigerant line. The high pressure side refrigerant line connecting portions of the first, third, fourth, and fifth heat exchange parts 111, 113, 114, and 115 have a shutoff valve 150 for selectively blocking the flow of refrigerant through the line. ), 151, 153, and 154 are provided, and the backflow prevention shutoff valve 152 is provided in the low pressure side refrigerant line connection part of the 2nd heat exchange part 112. As shown in FIG.

In addition, in the performance testing apparatus of the present invention, the auxiliary refrigerant line 170 is connected and installed in parallel near the main capillary tube 160 installation of the high-pressure side refrigerant line 120, and the auxiliary line is provided in this line 170. The capillary tube 171 and the solenoid valve 172 for opening and closing a line are provided. Here, the solenoid valve 172 is a normal closed type that is 'on' operated when an external working condition, such as a change in a minute product capacity or an abnormal capacity occurs, is mainly operated at a change in a minute product capacity, and thus the main capillary tube ( 160) serves to assist the action.

Meanwhile, in the illustrated example, the heat exchanger 100 is divided into five stages of heat exchangers. However, this is only one embodiment, and the heat exchanger 100 may be divided into two stages, three stages, and four stages of heat exchangers.

Here, the above-described shut-off valves 111, 112, 113, 114, 115 and the solenoid valve 172 is automatically or manually operated by a control device to be described later, the performance test by the operation of such a valve The heat exchanger of the device may be varied to an appropriate load depending on the capacity of the air conditioner outdoor unit to be inspected.

That is, a small capacity air conditioner outdoor unit uses only one heat exchanger unit, and in the case of a large capacity air conditioner outdoor unit, the performance of the package air conditioner outdoor unit can be tested for all equilibrium based on the principle of circulating the refrigerant. Looking at it as follows.

When the system starts up, the refrigerant has a path from the air conditioner outdoor unit to the high pressure side refrigerant line 120, the capillary tube 160, the heat exchanger 100, the low pressure side refrigerant line 130, and the air conditioner outdoor unit. In the case of a small balanced outdoor unit in the circulation path of the refrigerant, the refrigerant circulates through only the second heat exchanger 112 of the heat exchanger 100. At this time, all shutoff valves are blocked. Therefore, the refrigerant circulates only through the second heat exchanger. When the capacity of the inspection object is increased during such working conditions, the conventional work was performed by replacing a separate dedicated performance inspection device or changing a line. However, in the present invention, another shutoff valve, for example, the first heat exchange The buoyancy shut-off valve 150 is 'on' operation to increase the capacity of the heat exchanger 100 can proceed as it is. In the same principle, as the capacity of the product is increased or decreased, the inspection can be conveniently performed by adjusting the capacity appropriately while increasing or decreasing the number of uses of each heat exchanger.

In the performance test device as described above, the setting of the working condition according to the change of the capacity of the outdoor unit of the air conditioner is automatically controlled by the control device. For example, a plurality of blocking blocks to block the refrigerant flow to each heat exchange part of the heat exchanger 100. The valves are automatically 'on / off' under the control of the control unit and the inspection is carried out.

As shown in FIG. 5, the control device 40 includes a sensor unit 41 receiving signals from a pressure sensor, a temperature sensor, and a current sensor, and a position sensor unit receiving signals from a data transmission position sensor and a reset position sensor. (42), the pressure sensor display unit 43 for displaying the pressure data input from the pressure sensor of the sensor unit 41, the start switch 44-1, the inverter 44-3 and the capacity of each balance band selection A drive display unit for receiving a signal from the switch path 44-4 and a drive display unit for displaying the drive of the corresponding valve in accordance with the selection of the capacity selection switch 44-4 for each balanced unit of the switch unit 44 ( 45), a drive unit 46 which automatically drives the corresponding valve according to the selection of the balance balance capacity selection switch 44-4 of the switch unit 44, and the signals inputted from these sensors and the switches are analyzed and summed. Do not calculate and control input, output, and calculate and control input and output. ECOM 47, a data transmitter 48 for transmitting data stored in the microcomputer 47 to an external computer, an oscillator 49 for generating pulses required for driving the microcomputer, and a power supply 50. .

Here, the driving display unit 45 includes a plurality of light emitting diodes 45-1 for displaying a shutoff valve, a solenoid valve, a fan driving state, and a warning light state of the performance tester, and the corresponding light emitting diodes 45 under the control of the microcomputer. It consists of the driver IC 45-2 which drives -1).

In addition, the drive unit 46 is a plurality of relays (46-1) for driving the shut-off valve, solenoid valve, fan, output switch and warning lights of the performance testing device, and the corresponding relay 46-1 under the control of the microcomputer It consists of the driver IC 46-2 to drive.

The data transmitter 48 is configured to repeatedly transmit data at least three times.

On the other hand, in the illustrated example, the driving unit automatic control device is shown, it can also be configured as a driving unit passive type that can be operated manually without the driving unit.

In the passive control device of the driving unit as described above, the valves to be operated according to the capacity of the inspected object are displayed by the light emitting diodes of the driving display unit, and the operator can manually operate the valve based on the display state. On the contrary, the automatic drive unit is configured to automatically operate all the valves. The operation of the automatic control unit is described below with reference to FIG. 6.

When the power is 'on', the capacitance selection switch is first detected (S1), the operation display (S2) to the driving display unit, and the driving unit (S3) to match the capacity. Then check whether the start switch is 'on' (S4) and if it is 'on', the performance test starts (S5). If the start switch is 'off', check the state of the start switch again.

When the performance test is started, it receives data from all sensors (S6) and determines whether or not (S7). If it is a good product, the data is transmitted to an external computer (S8), and if it is a defective product, the warning lamp is turned on.

It will be described below with reference to Figures 7a to 7c and 8a and 8b attached to the control method of the air conditioner outdoor unit performance inspection system dedicated to cooling according to the present invention having the structure as described above.

As shown in the figure, the control method of the air conditioner outdoor unit performance inspection system dedicated to cooling according to the present invention comprises the steps of: inputting information on the air conditioner outdoor unit to be inspected (S10); Analyzing the input information on the object under test and setting the cooling load of the performance test apparatus according to the corresponding model and capacity and displaying the initial pressure (S20); Inspection and inspection data storage step (S30); Analyzing the stored test data to check the measured pressure value and the test duration, and displaying a corresponding error mode in case of abnormal result (S40); Abnormal operation detection step (S50) of detecting whether a power failure and / or a system error has occurred during the process up to this step to determine and display whether the work is in progress; Analyzing the inspection result to determine a sum, a part, and transmitting the stored data (S60); A second abnormal operation detection step S70 of detecting abnormal operation in a data transmission step and determining and displaying whether or not the operation is in progress; And a job termination step (S80) of erasing all measured data and waiting for the initial state.

Looking at this in detail.

First, when the power is supplied and information about the air conditioner outdoor unit to be tested is input using an external input device, the function switches are checked to display the corresponding light emitting diode and the pressure. At this time, if a key error occurs, i.e., if the key combination is normal (e.g., a combination of checkable keys) and it is a key error, the controller displays the model selection key error mode (EO-6). Here, the function switch checks whether the valve and the fan operate according to the balance of the outdoor unit of each air conditioner as shown in Table 1 below.

emphysema V1 (Product Selection) V2 (nutrient) V3 V4 V5 SV1 FAN Capacity selection PAC 12 pyeong X X O X X X H 15 pyeong X X O X X X H 20 pyeong X O O O X X H 25 pyeong X O O O O O H 30 pyeong X O O O O X H

In Table 1, O is open, X is closed, L is fan speed, and H is fan speed.

In addition, the initial state is displayed simultaneously with the check of the switch as described above. The pressure display samples and displays data coming from the pressure sensor for 1 second.

After the step, it is checked whether the start switch is 'on' and if it is 'on', the inspection and the inspection data are stored. At this time, when 'start' of the start switch, the relay is not 'on' at the same time, and 'on' after 30 seconds to prevent noise and starting failure, and the relay 'on' interval is 200ms.

On the other hand, the relay is 'on' in the order of FAN, 30 seconds delay, start, warning, etc., and the relay that does not become the 'on' condition is ignored and proceeds to the next relay. In this relay 'on' priority, the pressure data is stored from the moment when the start relay is 'on', and the initial value is to store 1 byte of data immediately before starting, and stores it every 3 seconds between 0 and 1 minutes. (20 bytes), and stores between 1 and 2 minutes at 5 second intervals (12 bytes), and stores between 2 and 6 minutes at 10 second intervals (24 bytes). Subsequent data is only displayed and not stored, but waits until a data transmission signal is received. In this case, the size of the pressure storage data during cooling is 57 bytes in total.

After storing the cooling test data as described above, it checks the pressure value and inspection time based on the stored cooling test data, displays the corresponding error mode in case of abnormal results and detects whether the power is 'off' during the cooling test. Determine and display the work progress according to the result.

Here, the pressure value is checked first based on the maximum compressor protection pressure (23Kg / cm ² ), and when the pressure is exceeded, the EH-2 error mode is displayed and the system is initialized and waited. Then check whether the secondary measured pressure is within the set pressure range (3.1 to 6.9 kg / cm ² ). If the measured pressure is less than 3Kg / cm ^2, EC-1 error mode is displayed. Then check if the pressure lasted for more than 3 minutes above 7Kg / cm ^2, and if it persists, display EC-2 error mode, otherwise display EO-5 error mode. The error mode EC-1 is a refrigerant bleed and high pressure valve clogging error mode, EC-2 is a valve clogging, overcharging, set off error mode, and EO-5 is an overload or set off error mode.

In this step, if the inspection time is less than the minimum time required for the cooling inspection, for example, 6 minutes, the test time shortage error mode (EC-4) is displayed.

In addition, when the power is 'off' during the test during the test interval, the measured data is erased until immediately before and the system is initialized and waited.

In the inspection section as described above, the data transmission position sensor is switched to the data transmission section. In this section, the sum of the subjects is determined based on the input data, and the result is transmitted to the external main computer. do.

Here, the data transmission position sensor is displayed until the data transmission is completed, and sequentially transmits the pressure data stored in the microcomputer. The transmission is repeated at least three times. At this time, if the power is 'off', the measured data is kept waiting and the cooling operation is performed to recover the refrigerant while maintaining the existing data when the power failure returns.

After transmitting the data, it checks whether the start switch is in the 'off' state and terminates the operation. At this time, the relay does not 'off' at the same time, and turns off after about 200 ms to prevent the occurrence of noise. And 'off' in the order of the fans. In the event of an error, the beacon will remain on even after the start switch is 'off', and the pressure display will normally display the data coming from the pressure sensor, and the light emitting diode will remain in its current state.

When the reset switch is detected in this state, the system erases all data and waits for the initial state. Even in this operation termination step, the system checks whether the power is 'off' at this stage, and if it is off, it maintains the measured data and waits, and restarts the system when the power failure returns. The system restart at this time is only for operation. That is, after all data has been measured, only the operation is maintained with the measured data.

If abnormal operation is made in the inspection section as described above, it is displayed to the outside as an error mode and a warning light is operated to inform the operator. In addition, according to the position of each section when the power 'off' and power failure return, the inspection work is performed in the flow as shown in the following Table 2.

Item Main switch (start switch) Error judgment 1 section 2 sections 3 sections Start of recovery operation after neglect failure OFF state I'm end end end after end end end Power failure reset (off → on) I'm All Do La, ah after All Bar, sa La, ah In case of power failure (on → off) I'm end I I after end I I

In Table 2, "a" to "a" represent the following, respectively.

A: Erases the existing data and waits for the initial state.

B: Wait while keeping only the measured data at the current position.

C: restart the system

D: Keep existing data and only run cooling operation (data is already stored and not saved, only run for refrigerant recovery)

E: Before error determination → Perform cooling test again in cooling operation mode.

Bar: After error determination → Since error has already occurred, display error and retry cooling test in cooling operation mode.

Note: In the case of cooling type → cooling data measured in section 1 is validly stored because the measurement is completed.

H: If the data is off in the data transmission section, the data immediately before the off is used. If the data transmission count is not more than three times, the data is retransmitted.

As described above, in the control method of the air conditioner outdoor unit performance inspection system for exclusive use of the air conditioner according to the present invention, all inspections and determinations are automatically performed by the microcomputer, and at the time of abnormal operation, this is displayed externally as an error mode. Activate the warning lights to inform you. This allows the operator to quickly take action on system errors and to accurately check the measured data without having to worry about the task.

As described above, the performance inspection system of the air conditioner outdoor unit for exclusive use of the air conditioner according to the present invention can eliminate judgment errors due to the human eye since all inspections and determinations are made automatically by a microcomputer, thereby improving reliability of the inspection. It can increase. In addition, it is possible to accurately check the progress of the air conditioner's performance inspection as measured data without the operator having to worry about it.

In addition, the present invention can perform the performance test while varying the cooling load of the heat exchanger according to the size of the air conditioner outdoor unit to be inspected, for example, water and capacity, that is, a shut-off valve installed on the high pressure side or low pressure side of each heat exchanger constituting the heat exchanger Automatic or manual adjustment can be performed to adjust the cooling load of the heat exchanger to the capacity of the object under test.

Therefore, it is possible to carry out basic performance inspection of package air conditioner outdoor unit of several specifications in one line, which is easy and easy to set up the manufacturing line, so it can be used very advantageously in the small quantity production system of various types, The quality can be improved.

In the above has been shown and described with respect to a preferred embodiment for implementing a performance inspection system and a control method of the air conditioner outdoor unit for cooling only according to the present invention, the present invention is not limited to the above embodiment, in the claims below Various changes can be made by those skilled in the art without departing from the gist of the present invention.

Claims (21)

It is divided into an inspection section, a data transmission section and an inspection end section, a data transmission position sensor for switching a work mode between the inspection section and the data transmission section is installed, and a reset position sensor is installed at the end of the inspection end section, A conveyor for sequentially transporting the outdoor unit of the air conditioner under test; A trolley conveyor installed at a predetermined distance upwardly from the conveyor; A power rail for power supply installed at a predetermined distance from the trolley conveyor side; Suspended on the trolley conveyor, the support is suspended, electrically connected to the power rail, connected to the room air conditioner outdoor unit transported on the conveyor, and the pressure is measured while changing the cooling load according to the capacity change of the outdoor unit. It is possible to include at least one cooling load variable performance test device, The cooling load variable performance test device comprises a high, low pressure side refrigerant line to form a closed circulation path with the air conditioner outdoor unit by the connection pipe; A heat exchanger partitioned by at least two heat exchangers connected in parallel between the high and low pressure side refrigerant lines; A shutoff valve for selectively blocking a flow path to each of the heat exchangers of the heat exchanger; A capillary tube connected to the high pressure side refrigerant line; A pressure sensor for measuring a pressure of the refrigerant circulating through the high and low pressure side refrigerant lines; And a control device for controlling a heating load according to a change in capacity of the air conditioner outdoor unit by the pressure measured from the pressure sensor. The system of claim 1, further comprising a warning light that alerts when an error occurs or a defective product is determined. The heat exchanger of claim 1, wherein the heat exchanger is divided into two stages of the first heat exchange part and the second heat exchange part connected in parallel to the high and low pressure side refrigerant lines, and the shutoff valve is configured to selectively block the flow of the refrigerant. A performance inspection system for an outdoor unit of a cooling only package air conditioner, which is installed at a high-pressure side refrigerant line connection part of a heat exchange unit. The heat exchanger of claim 1, wherein the heat exchanger is divided into three stages of the first heat exchange part, the second heat exchange part, and the third heat exchange part connected in parallel to the high and low pressure refrigerant lines, and the shutoff valve selectively controls the flow of the refrigerant. In order to cut off, the first heat exchanger and the third heat exchanger are respectively installed on the high pressure side refrigerant line connection part, and the low pressure side refrigerant line connection part of the third heat exchanger is provided with a refrigeration blocking valve configured to prevent backflow. Performance test system of outdoor unit. The heat exchanger of claim 1, wherein the heat exchanger is partitioned into four stages of the first heat exchange part, the second heat exchange part, the third heat exchange part, and the fourth heat exchange part connected in parallel to the high and low pressure side refrigerant lines. In order to selectively block the flow of water, the first heat exchanger, the third heat exchanger, and the fourth heat exchanger are respectively installed on the high pressure side refrigerant line connection part, and the low pressure side refrigerant line connection part of the third heat exchanger is provided with a backflow prevention shutoff valve. Performance inspection system for a dedicated air-conditioner outdoor unit for cooling. According to claim 1, wherein the heat exchanger is partitioned into five stages of the first heat exchanger, the second heat exchanger, the third heat exchanger, the fourth heat exchanger and the fifth heat exchanger connected in parallel to the high, low pressure side refrigerant line, The shut-off valves are respectively installed on the high pressure side refrigerant line connecting portions of the first heat exchange part, the third heat exchange part, the fourth heat exchange part, and the fifth heat exchange part to selectively block the flow of the refrigerant, and the low pressure side of the third heat exchange part. Refrigerant line connection part is a performance check system of the outdoor unit for cooling only package air conditioner, characterized in that the backflow prevention valve is installed. According to any one of claims 3 to 6, at least one auxiliary refrigerant line is connected and installed in parallel to the high-pressure side refrigerant line, the line is provided with an auxiliary capillary tube and the solenoid valve for opening and closing the line Installed to assist the action of the main capillary tube in response to a small change in the capacity of the test object, characterized in that the performance inspection system of the air conditioner outdoor unit dedicated to cooling. The apparatus of claim 1, wherein the control device comprises: a sensor unit receiving a signal from a pressure sensor, a temperature sensor, and a current sensor; A position sensor unit receiving a signal from a data transmission position sensor and a reset position sensor; A pressure sensor display unit for displaying pressure data input from the pressure sensor of the sensor unit; A switch unit receiving a signal from a start switch, an inverter, and a balance selection capacity selection switch; A driving display unit for displaying the driving of the shut-off valve according to the selection of the capacity selection switch for each balanced unit of the switch unit; A driving unit for driving the corresponding valve according to the selection of the capacity selection switch for each balance unit of the switch unit; A microcomputer that analyzes signals input from these sensors and switches, determines and stores sums and portions, and calculates and controls inputs and outputs; A data transmitter for transmitting the data stored in the microcomputer to an external computer; An oscillator for generating a pulse required for driving the microcomputer; And a power supply unit. The performance inspection system of the air conditioner outdoor unit for exclusive use of cooling. 10. The apparatus of claim 8, wherein the driving display unit comprises a plurality of light emitting diodes for displaying a shut-off valve, a solenoid valve, a fan driving state, and a warning light state of a performance testing device, and a driver IC for driving the corresponding light emitting diodes under the control of a microcomputer. Performance inspection system of the air conditioner outdoor unit dedicated to cooling. 10. The system of claim 8, wherein the data transmitter is configured to repeatedly transmit data at least three times. The driving unit of claim 8, wherein the driving unit includes a plurality of relays for driving a shutoff valve, a solenoid valve, a fan, an output switch, a four-way switching valve, a warning lamp, and a driver IC for controlling the relay according to the control of a microcomputer. Performance inspection system of the air conditioner outdoor unit for cooling only package, characterized in that consisting of. (a) inputting information on the outdoor unit of the air conditioner under test; (b) analyzing the information input in the step (a) to set the cooling load of the performance test apparatus according to the corresponding model and capacity and to display the initial pressure detected by the pressure sensor; (c) inspecting the air conditioner outdoor unit with a dedicated package air conditioner outdoor unit inspection apparatus based on the load and the detected initial pressure set in step (b) and storing the checked data; (d) analyzing the data stored in the step (c) to check the measured pressure value and the test duration, and displaying a corresponding error mode in case of abnormal results; (e) a primary abnormal operation detection step of detecting whether a power failure and / or system error has occurred during the progress up to the step to determine whether the operation is in progress, and displaying the result; (f) analyzing the inspection result according to the result determined in the step (e) to determine the sum or part and transmitting the stored data; (g) a second abnormal operation detection step of detecting abnormal operation during data transmission in step (f) to determine whether the operation is in progress and displaying the result; And (H) a control method of a dedicated air conditioner outdoor unit performance testing system for cooling, characterized in that it comprises the step of erasing all the data measured according to the result determined in step (g) and waiting for the initial state. The method of claim 12, wherein in step (a), after inputting information on the object under test, a key error is detected and a model selection key error mode (EO-6) is displayed in the case of a key error. Control method of air conditioner outdoor unit performance test system. The method of claim 12, wherein in the step (c), data storage is performed by using 1 byte as an initial value, every 3 seconds between 0 and 1 minutes, every 5 seconds between 1 and 2 minutes, and every 10 seconds between 2 and 6 minutes. Control method of the air conditioner outdoor unit performance inspection system for exclusive use of cooling, characterized in that the storage at intervals, and the size of the maximum 57 bytes. The method of claim 12, wherein in step (d), the pressure value is checked on the basis of the initial maximum compressor protection pressure, and when the pressure value exceeds the compressor protection pressure by checking whether the pressure is within the set pressure range in the second time, the EH-2 error mode. In addition, the system initializes the system and, when it is out of the set pressure, displays the corresponding error mode among the error modes of EC-1, EC-2, or E0-5. Control method. The method according to claim 15, wherein when the measured pressure value is out of the set pressure, the EC-1 error mode is displayed when the pressure value is 3 Kg / cm ² or less, and if it has been continued for more than 3 minutes, the EC- The control method of the air conditioner outdoor unit performance inspection system for exclusive use of cooling, characterized by displaying an error mode, otherwise an EO-5 error mode. The air conditioner outdoor unit for exclusive use of air conditioners according to claim 12, wherein in step (d), if the inspection time is less than or equal to the minimum time required for the inspection, the test time shortage error mode (EC-4) is displayed. Control method of performance test system. The control method according to claim 12, wherein the step (e) erases the data measured until immediately before power 'off' is detected and initializes the system. The control method according to claim 12, wherein the data transmission in step (f) is repeated at least three times. The method of claim 12, wherein the step (g) maintains the measured data at the current position when the power is 'off' and then turns on the cooling operation for cooling the refrigerant. Control method of air conditioner outdoor unit performance test system. The method of claim 12, wherein the step (h) checks whether the start switch is 'off' and erases all data when the 'off' is turned off, and maintains only the measured data at the current position when the power is 'off' in the process. Control method of the air conditioner outdoor unit performance inspection system dedicated to cooling, characterized in that when the power is 'on' while waiting to return to the first test mode to operate only.

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