JP2002168501A - Air conditioning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure optimum current control of a compressor. SOLUTION: An air conditioning apparatus is provided, in which there are provided an outdoor machine 11 including a compressor 16 and an outdoor heat exchanger, an indoor machine including an indoor heat exchanger, and an outdoor control device 13A for executing current control of the compressor by making use of a protective current. In the air conditioning apparatus, a non-volatile memory 29 is provided in the foregoing outdoor control device, in which memory a rated current value of the compressor calculated from operation data detected upon the check of an operation in a manufacturing process is stored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for controlling a current value of a compressor.

[0002]

2. Description of the Related Art In an air conditioner, while a compressor mounted on an outdoor unit is operated in a rated operating state, a supply current supplied to the compressor is a protection current value (an overload current value,
In some cases, the control device controls the current value of the compressor so as to stop the compressor when the lock current value is reached.
Here, the protection current value is set based on the rated current value of the compressor.

[0003]

The rated current value of the compressor is determined for each capacity of the compressor, but may change when the manufacturer of the compressor is different. As described above, when the manufacturer of the compressor mounted on the air conditioner is changed, it is necessary to change the microcomputer of the control device in order to appropriately control the current value of the compressor.

[0004] On the other hand, when the air conditioner is actually installed, the load varies depending on the installation environment, and therefore the rated current value of the compressor also changes compared to when the air conditioner is shipped. For this reason, depending on the installation environment of the air conditioner, the current value control of the compressor may not be appropriately performed.

An object of the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner capable of performing optimum current value control of a compressor.

[0006]

According to a first aspect of the present invention, there is provided an outdoor unit having a compressor and an outdoor heat exchanger, an indoor unit having an indoor heat exchanger, and a compressor having a rated current. A control device for controlling the current value using the protection current value based on the value,
In the air conditioner having, the control device is provided with a memory, the rated current value of the compressor obtained from operation data detected during operation inspection in the manufacturing process, stored in the memory. Is what you do.

According to a second aspect of the present invention, in the first aspect, the operation inspection in the manufacturing process is performed in a simulated environment simulating an installation environment of an air conditioner. Things.

According to a third aspect of the present invention, in the first or second aspect, the memory of the control device includes:
A protection current value based on the rated current value is stored together with the rated current value of the compressor.

The invention described in claim 1 or 3 has the following operation.

[0010] A memory is installed in the control device, and a rated current value of the compressor obtained from operation data detected during an operation inspection in a manufacturing process of the air conditioner is stored in the memory. Even if the rated current value determined for each compressor differs depending on the manufacturer of the compressor, the rated current value specific to the compressor mounted on the air conditioner is stored in the memory of the control device. Using the protection current value based on the rated current value, it is possible to optimally control the current value of the compressor in the air conditioner.

The second aspect of the present invention has the following operation.

The operation inspection in the manufacturing process is performed in a simulated environment that simulates the installation environment of the air conditioner. Therefore, the air conditioner is actually installed in the memory of the control device in the air conditioner. Since the rated current value obtained from the operation data detected in the simulated environment that simulates the installation environment is stored, when the air conditioner is actually installed in different installation environments, the protection stored in the memory is stored. Using the current value, it is possible to perform optimal current value control for the compressor.

[0013]

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

FIG. 1 is a pipeline diagram showing an embodiment of an air conditioner according to the present invention.

As shown in FIG. 1, an air conditioner 10
Has an outdoor unit 11, an indoor unit 12, and a control device 13. An outdoor refrigerant pipe 14 of the outdoor unit 11 and an indoor refrigerant pipe 15 of the indoor unit 12 are connected via connection pipes 24, 25. I have.

The outdoor unit 11 is installed outdoors, and a compressor 16 is disposed in the outdoor refrigerant pipe 14. An accumulator 17 is provided on the suction side of the compressor 16 and a four-way valve 18 is provided on the discharge side of the compressor 16 through the outdoor refrigerant pipe 14. The four-way valve 1
8 is connected to an outdoor heat exchanger 19 via an outdoor refrigerant pipe 14. An outdoor fan 20 that blows air toward the outdoor heat exchanger 19 is disposed adjacent to the outdoor heat exchanger 19.

On the other hand, the indoor unit 12 is installed indoors, and an indoor heat exchanger 21 is provided in the indoor refrigerant pipe 15.
An electric expansion valve 22 is provided near the indoor heat exchanger 21 in the indoor refrigerant pipe 15. An indoor fan 23 that blows air to the indoor heat exchanger 21 is disposed adjacent to the indoor heat exchanger 21.

The control unit 13 controls the operation of the outdoor unit 11 and the indoor unit 12. This control device 13
Actually, the outdoor control device 13A installed in the outdoor unit 11
And an indoor control device 13B installed in the indoor unit 12. The outdoor control device 13A controls the compressor 16, the four-way valve 18, and the outdoor fan 20 in the outdoor unit 11,
The indoor control device 13B controls the electric expansion valve 22 and the indoor fan 23 in the indoor unit 12, respectively.

The air conditioner 10 is set to a cooling operation or a heating operation by switching the four-way valve 18 by the outdoor control device 13A. That is, the outdoor control device 13
When A switches the four-way valve 18 to the cooling side, the refrigerant flows as shown by the solid line arrow, the outdoor heat exchanger 19 becomes a condenser, and the indoor heat exchanger 21 becomes an evaporator, and enters a cooling operation state.
The indoor heat exchanger 21 of the indoor unit 12 cools the room. Further, when the outdoor control device 13A switches the four-way valve 18 to the heating side, the refrigerant flows as indicated by the dashed arrow, and the indoor heat exchanger 21 functions as a condenser, and the outdoor heat exchanger 19 functions as an evaporator to perform a heating operation. Then, the indoor heat exchanger 21 of the indoor unit 12 heats the room.

The indoor control device 13B includes an indoor unit 12
Electric expansion valve 2 in the indoor unit 12 according to the air conditioning load of
2, the indoor fan 23 of the indoor unit 12 is controlled.
Control the fan drive system.

The control of the compressor 16 by the outdoor control device 13A is to control the compressor 16 using a protection current value, that is, an overload current value and a lock current value.

That is, as shown in FIG. 2, power (for example, AC power) is supplied to the compressor 16 from the power supply unit 26. The compressor 16 is operated at a rated speed by an operation command signal transmitted from the microcomputer 27 of the outdoor control device 13A. A current value supplied from the power supply unit 26 to the compressor 16 is detected by a current detector 28, and the detected current is input to the outdoor control device 13A. The microcomputer 27 of the outdoor control device 13A transmits a deceleration command signal and a stop command signal to the compressor 16 when the detected current value reaches the above-described predetermined overload current value and lock current value. Then, the compressor 16 is decelerated or stopped.

The overload current value and the lock current value are set based on the rated current value when the compressor 16 is operated at the rated speed. For example, the overload current value is set to 1.4 times the rated current value, and the lock current value is set to 1.8 times the rated current value. Then, the rated current value of the compressor 16 is
EEPROM (electrica) installed in the 3A
lly eraseable programmable
ROM) or the like.

The storage of the rated current value in the non-volatile memory 29 is based on the fact that the current detector 28 is operated by the current detector 28 while the compressor 16 is operated at the time of operation inspection before shipment in the manufacturing process of the air conditioner 10. The microcomputer 27 (or an inspector or the like) detects a supply current value supplied to the
This is performed by obtaining a rated current value from the supply current value as the operation data and storing the rated current value in the nonvolatile memory 29. Therefore, the rated current value of the compressor 16 stored in the non-volatile memory 29 depends on the operation-checked air conditioner 10.
Each time, that is, a value unique to each compressor 16 mounted on the air conditioner 10.

When the operation inspection before shipping in the manufacturing process of the air conditioner 10 is performed in a simulated environment simulating the installation environment in which the air conditioner 10 is actually installed, the nonvolatile memory 29 The stored rated current value of the compressor 16 depends on the installation environment in which the air-conditioning apparatus 10 is actually installed (for example, an environment in which a cooling operation is performed under a low outside temperature such as a computer room, a boiler room, etc. An environment corresponding to the cooling operation under a high outside air temperature) is stored in the nonvolatile memory 29.

Therefore, according to the above embodiment, the following effects are obtained.

Outdoor controller 13A in outdoor unit 11
And a rated current value of the compressor 16 obtained from operation data (that is, a supply current value to the compressor 16) detected during an operation inspection in the manufacturing process of the air conditioner 10 Even when the rated current value determined for each capacity of the compressor 16 differs depending on the manufacturer of the compressor 16 because it is stored in the nonvolatile memory 29, the compressor 16 mounted on the air conditioner 10
Is stored in the non-volatile memory 29 of the outdoor control device 13A of the air conditioner 10, the protection current value (overload current value and lock current value) is used based on the rated current value. Thus, the current value of the compressor 16 in the air conditioner 10 can be optimally controlled.

When an operation inspection in the manufacturing process of the air conditioner 10 is performed in a simulated environment simulating the installation environment of the air conditioner 10, the air conditioner 1
0, the non-volatile memory 29 of the outdoor control device 13A stores a rated current value obtained from operation data detected under a simulated environment simulating the installation environment in which the air conditioner 10 is actually installed. When the air conditioner 10 is actually installed in different installation environments, optimal current value control for the compressor 16 in the air conditioner 10 is performed using the protection current value stored in the nonvolatile memory 29. Can be implemented.

At the time of operation inspection in the manufacturing process of the air conditioner 10, a current detector 28 is used to detect a supply current value to the compressor 16, and a rated current value is calculated from the supplied current value. Is stored in the non-volatile memory 29 of the control device 13. Therefore, even if there is a variation in the rated current value in each of the compressors 16 mounted on each air conditioner 10, the optimum current value corresponding to this variation is The control can be performed on the compressor 16 of each air conditioner 10. As described above, the present invention has been described based on the above embodiment, but the present invention is not limited to this.

For example, the nonvolatile memory 29 of the outdoor control device 13A of the outdoor unit 11 stores the rated current value of the compressor 16; Instead of the rated current value, a protection current value such as an overload current value and a lock current value calculated from the rated current value may be stored.

[0031]

As described above, according to the air conditioner of the present invention, an outdoor unit having a compressor and an outdoor heat exchanger, an indoor unit having an indoor heat exchanger, and the compressor are described. A control device for controlling a current value using a protection current value based on a rated current value, wherein a memory is installed in the control device and obtained from operation data detected during an operation inspection in a manufacturing process. Since the rated current value of the compressor is stored in the memory, optimal current value control of the compressor can be performed.

[Brief description of the drawings]

FIG. 1 is a pipeline diagram showing an embodiment of an air conditioner according to the present invention.

FIG. 2 is a block diagram showing a compressor and an outdoor control device of FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 air conditioner 11 outdoor unit 12 indoor unit 13 controller 13A outdoor controller 16 compressor 19 outdoor heat exchanger 21 indoor heat exchanger 27 microcomputer 28 current detector 29 non-volatile memory

Claims (3)

[Claims] 1. An outdoor unit having a compressor and an outdoor heat exchanger, an indoor unit having an indoor heat exchanger, and current control of the compressor using a protection current value based on a rated current value. In the air conditioner having a control device, a memory is installed in the control device, and a rated current value of the compressor obtained from operation data detected during an operation inspection in a manufacturing process is stored in the memory. An air conditioner characterized by the above-mentioned. 2. The air conditioner according to claim 1, wherein the operation inspection in the manufacturing process is performed in a simulated environment simulating an installation environment of the air conditioner. 3. The air conditioner according to claim 1, wherein the memory of the control device stores a rated current value of the compressor and a protection current value based on the rated current value. .