JPH11182916A - Air-conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning device which can be reset smoothly. SOLUTION: An air-conditioning device is provided with an arithmetic processing means 22 which receives stop signals and performs arithmetic processing on the signals when air conditioners A-E are stopped, a writing means 23 which receives the arithmetic data processed by means of the processing means 22 and in which various kinds of programs used at the time of operating the air conditioners A-E are written, and an operation control means 11 which controls the resetting of the air conditioners A-E in accordance with the various kinds of programs written in the writing means 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner that, when a plurality of air conditioners are stopped, performs an operation return control accurately.

[0002]

2. Description of the Related Art Generally, factories, offices, and the like are provided with a plurality of air conditioners, which are used to control air conditioning in factories, offices, and the like.

In a factory or the like, a plurality of air conditioners are stopped at the same time at the end of work, inspection, repair, and other power outages, and the operation is started at the same time at start of operation, inspection, repair completion, and when the power outage is restored. Have been to be.

[0004] At the time of such a return to operation, a plurality of air conditioners have been manually returned to operation. However, there is a problem that such operation return is not only troublesome, but also that uniform air-conditioning control cannot be performed and comfortable air-conditioning cannot be obtained.

In order to solve this problem, a plurality of air conditioners are always operated at the same time. However, if air conditioners having a large capacity are operated at the same time, a large excess current flows and a circuit breaker or the like is activated to restart the air conditioner. There was a problem to say.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air conditioner in which a plurality of air conditioners are stopped at the same time, and then the operation is automatically resumed under optimum conditions. It is.

[0007]

According to the present invention, a plurality of air conditioners receive a stop signal when the air conditioner is stopped, and an arithmetic processing means for processing the stop signal is provided. Writing means for writing various programs at the time of operation of the air conditioner, and operation return control means for controlling operation return of the air conditioner by various programs written to the writing means at the time of operation return of the plurality of air conditioners are provided. It is an object to obtain an air conditioner characterized by the above.

The writing means at the time of stoppage of the present invention is EE
The purpose is to obtain an air conditioner characterized by being a PROM.

Further, it is another object of the present invention to provide an air conditioner characterized by comprising a simultaneous operation return program.

A further object of the present invention is to provide an air conditioner characterized in that the program of the present invention is provided with a time interval operation return program.

Still another object of the present invention is to provide an air conditioner characterized by comprising a random operation return program.

Still another object of the present invention is to provide an air conditioner characterized in that each set condition can be changed.

Still another object of the present invention is to provide an air conditioner characterized in that the setting conditions of the program of the present invention are changed by operation setting means.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the air conditioner of the present invention will be described below with reference to the accompanying drawings. The air conditioner 10 is constituted by a plurality of air conditioners A, B, C, D,..., And these are controlled by a controller 11.

Each of the air conditioners A, B, C, D,... Has substantially the same configuration. For example, FIG.
A compressor 12A is provided as shown in FIG. The compressor 12A is connected to a four-way valve 13A, an indoor heat exchanger 14A, an outdoor heat exchanger 15A, and the like, so that a refrigeration cycle for performing a cooling and heating operation is formed.

The indoor heat exchanger 14A includes an indoor blower 1
6A is provided to send the conditioned air of the cooled and heated indoor heat exchanger 14A into the room.

The outdoor heat exchanger 15A is provided with an outdoor blower 17A for cooling the heated outdoor heat exchanger 15A.

The compressor 12A of the air conditioner A,
The indoor heat exchanger 14A, the outdoor heat exchanger 15A, etc. are provided with various sensors 18A, 19A, 20A such as an overcurrent sensor, a temperature sensor, a humidity sensor, and a noise sensor such as a microphone, and these sensors 18A, 19A are provided. The detected detection signal is sent to the control device 11.

The control unit 11 includes an input / output unit 21, a CPU, a ROM
, An arithmetic processing unit 22 having a RAM, an EEPROM 23, and an operation setting unit 24 such as a remote switch. The operation of each of the air conditioners A, B,... Is controlled as a whole and / or individually. I have.

Each of the air conditioners A
, B,..., The detection signals from the sensors 18A, 19A, 20A and the control signals processed by the arithmetic processing unit 22 are processed by the compressors 12A,.
A,... Are sent to the outdoor blowers 17A,.

Upon receiving the detection signal from the input / output unit 21, the arithmetic processing unit 22 performs an arithmetic processing on the detection signal by the CPU, and executes a RAM,
The set operation program, abnormal operation program, noise program, temperature control program, and humidity control program stored in the OM are read, and control signals based on these programs are sent to the input / output unit 21.

The EEPROM 23 stores a program set and operated by the operation setting unit 23 or a program stored in the RAM so that the set program is not erased when the operation is stopped.

The operation setting section 24 sends an operation setting signal to the arithmetic processing section 22 via the input / output section 21, and changes the program stored in the ROM in accordance with the air conditioning conditions of the factory or the like by this arithmetic processing. This is stored in the EEPROM 23.

The indoor heat exchanger 14A of these air conditioners A
The indoor blower 16A is housed in an indoor unit 25A as shown in FIGS. This indoor unit 25
In the lower part of A, a suction hole 26A for indoor air is opened in the center, and a hole 27A for taking out conditioned air in the outer periphery.
Is provided with a frame 28A, which is opened with a screw 29A.
To the ceiling 30.

The frame body 28A is provided with a ceiling panel 33A having a suction hole 31A for room air at the center and a hole 32A for taking out conditioned air at the outer periphery.

A decorative panel 35A equipped with a filter 34A is attached to the indoor air suction hole 31A of the ceiling panel 33A, and the indoor air is supplied to the indoor heat exchanger 14A.
Is to lead to.

The frame 28A is provided with a manual winding type rewinding and rewinding mechanism 36A with a lock. The wire 37A attached to the corner of the decorative panel 35A is rewound to clean the filter 34A and the decorative panel 35A. , Take-up filter 34A and decorative panel 35
A is set on the ceiling panel 35A.

The air conditioners A, B, C thus configured
,…, In particular, multiple air conditioners A stopped all at once
, B, C,... Will be described with reference to a flowchart shown in FIG.

First, the operation setting section 23 is operated to operate the air conditioner.
Change the setting conditions of various programs that control the operation of A, B, C, D ...

For example, as the operation program, a time interval operation program such as an interval of 5 minutes is inputted, the abnormal operation program is inputted with a current value of 50 A and a voltage value of 500 V, the noise program is inputted with a noise value of 50 horn, and the temperature control program is inputted. Is 26 ° C., and the humidity control program is 55
% And the like are input.

These setting signals are sent to the ROM via the CPU of the input / output unit 21 and the arithmetic processing unit 22, and a program such as an operation program is read from the ROM.
Calculation processing and write to RAM and EEPROM
Is written to.

Next, the winding and rewinding mechanism 36A is manually operated, and the rope 37A is fed in so that the decorative panel 35 can be moved.
A is lowered from the ceiling 30 to the floor or the like, the filter 34A and the decorative panel 35A are cleaned, and the rope 37A is wound around and set on the ceiling panel 335A.

When the preparation operation is completed, the power supply (not shown) is turned on, and the air conditioners A, B, C, D,... Are operated by the time interval operation program of the control device 11.

According to this operation program, the air conditioner A is first started, and after 5 minutes, the air conditioner B
, And similarly, the air conditioners C, D... Are operated at intervals of 5 minutes.

Therefore, the air conditioners A, B, C, D,... Are not operated at the same time, so that the air conditioners A, B, C, D,...

Thus, the start-up operation of the air conditioners A, B, C, D... Can be performed smoothly.

When these air conditioners A, B, C, D... Start operation, the respective air conditioners A, B, C, D.
Performs air-conditioning operation according to a preset program.

If the air-conditioning operation deviates from the set condition, the air-conditioning operation is detected by the sensors 18A,..., 19A,.
, A control signal is sent to the compressors 12A,... To increase the frequency and promote cooling, and the indoor fan value 16
.. And / or the outdoor blowers 17A,.

During such an operation, the power supply may be suddenly interrupted, or the power supply may be stopped all at once due to a periodic inspection, failure, or the like.

In such a case, the programs such as the operating conditions stored in the RAM are erased, and in order to surely save the program in use, the power is stopped and the RAM is used by using the power remaining for a short time at the time of stop. Is stored in the EEPROM 23 by the arithmetic processing of the CPU.

When the power failure or the like is restored, the power is turned on all of these air conditioners A, B, C,. At this time
The CPU checks whether the set program stored in the EEPROM 23, for example, the time interval operation program, is properly stored, and determines whether or not to return to operation (S1).
(S2).

When returning to operation, the operating conditions, that is, the setting conditions of the program at the start of operation are confirmed (S
3).

Next, the number of restorations of the air conditioner 10 is determined. If the number of restorations is one or two or less, operation restoration operation is performed, and each air conditioner A is operated at 5 minute intervals similarly to the start-up operation.
, B, ... are activated (S4), (S5).

Since a large starting current does not flow to the power supply by such a start-return operation, a circuit breaker or the like is operated to smoothly start the air conditioners A, B,. it can.

If the operation is not to be resumed or if it is not necessary to resume the operation, the operation is suspended (S
2), (S6).

If the number of return to operation is three or more, the return to operation is reset (S4) and (S7). By this reset, the air conditioners A, B,.
An abnormal signal such as a lock failure such as A is detected (S8). In such a case, the return to operation is stopped, and re-inspection and repair are performed (S9).

As described above, according to the present invention, the air conditioner A,
The air conditioning operation can be smoothly performed without restarting due to excessive current due to the smooth operation during the operation return as well as during the operation of B,.

In the above embodiment, the time interval operation program is used as the operation program. However, in the case of an air conditioner having a small capacity or when the number of operating air conditioners is small, the operation may be performed by the simultaneous operation program.

When operating the air conditioners, instead of operating the respective air conditioners according to a schedule, the air conditioners A, Z, B, Y, G, N,. By operating the air conditioner, the air conditioning of the factory or the like may be uniformly performed as a whole.

[0050]

According to the present invention, when a plurality of air conditioners are stopped, a stop signal is received and arithmetic processing is performed on the stop signal. A plurality of air conditioners are provided, including writing means for writing various programs at the time of operation, and operation return control means for controlling operation return of the air conditioner by various programs written to the writing means when the operation of the plurality of air conditioners is restored. When restarting the machine, it is possible to prevent a re-stop due to an excessive current.

The writing means at the time of stoppage of the present invention is EE
Since it is a PROM, the running program can be reliably stored when the operation is stopped, and can be used to control the air conditioner when the operation returns.

Further, since the program according to the present invention is provided with the simultaneous operation return program, the operation of the small capacity air conditioner can be simultaneously resumed.

Further, since the program of the present invention is provided with a time interval operation return program, an excessive current flows when operating a plurality of air conditioners, and there is no need to stop again.

Further, since the program of the present invention includes a random operation return program, a large air-conditioned area can be uniformly air-conditioned.

Further, since the program of the present invention can change each set condition, it is possible to perform air conditioning control according to various conditions.

Further, since the setting conditions of the program of the present invention are changed by the operation setting means, the setting operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline of an air conditioner of the present invention.

FIG. 2 is an explanatory view showing a refrigeration cycle of one air conditioner in FIG.

FIG. 3 is a sectional view showing an installation state of the indoor unit when the air conditioner in FIG. 1 is a ceiling-mounted air conditioner.

FIG. 4 is an exploded perspective view showing FIG. 3;

FIG. 5 is a follow chart showing the operation of FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 air conditioner 11 controller 12A compressor 13A four-way valve 13A 14A indoor heat exchanger 15A outdoor heat exchanger 16A indoor blower 17A outdoor blower 18A, 19A, 20A sensor 21 input / output unit 22 arithmetic processing unit 23 EEPROM 24 operation setting unit 25A Indoor unit 26A, 31A Suction hole 27A, 32A Removal hole 28 Frame 33A Ceiling panel 34A Filter 35A Makeup panel 36A Rewind / rewind mechanism 37A Rope

Claims (7)

[Claims] 1. An arithmetic processing means for receiving a stop signal when a plurality of air conditioners are stopped and performing arithmetic processing on the stop signal, receiving arithmetic data processed by the arithmetic processing means, and Air, comprising: writing means for writing various programs; and operation return control means for controlling operation recovery of the air conditioner by various programs written to the writing means when the operation of the plurality of air conditioners is returned. Harmony equipment. 2. The air conditioner according to claim 1, wherein the writing means at the time of stop is an EEPROM. 3. The air conditioner according to claim 1, wherein the program includes a simultaneous operation return program. 4. The program according to claim 1, further comprising a time interval operation return program.
The air conditioner according to any one of the preceding claims. 5. The program according to claim 1, wherein the program includes a random operation return program.
The air conditioner according to any one of the preceding claims. 6. The program according to claim 1, wherein each of the setting conditions can be changed.
6. The air conditioner according to 2, 3, 4 or 5. 7. The air conditioner according to claim 6, wherein the setting condition of the program is changed by operation setting means.