CN103697564B - Self diagnosis self-starting device is shut down in air conditioner in machine room protection protection - Google Patents

Abstract

The invention discloses a self-diagnosis and self-starting device for the protection and protection of an air-conditioner in a computer room, which is characterized in that it has an air-conditioning protection self-diagnosis and self-starting module connected to the main control board of the air conditioner, and the air-conditioning protection self-diagnosis and self-starting module described in the timing circuit Detect the compressor temperature sensor, exhaust pressure sensor signal and compressor stop signal respectively. When the above signals appear at the same time, it means that the air conditioner is shut down due to high pressure protection, thus triggering the timing circuit. When the time is up, the air conditioner protection self-diagnosis and self-starting module will restart. Detect the signals of the compressor temperature sensor and the exhaust pressure sensor, and if the signals return to normal, power off and reset the main control board, and start the air conditioner. It can automatically detect the shutdown status, and can automatically reset and start the machine. Resetting the air conditioner in time can ensure that the electronic components in the computer room do not overheat, and ensure the safe and stable operation of communication equipment.

Description

Computer room air conditioner protection protection shutdown self-diagnosis self-starting device

technical field

The invention belongs to the technical field of air conditioner control, and in particular relates to a self-diagnosis and self-starting device for protection and shutdown of an air conditioner in a computer room.

Background technique

Power communication is a dedicated communication network supported by the main network of the power system. It is the basis for the safety and stability of the power grid, the control system and the dispatch automation system, and is an important prerequisite for realizing the modern management of the power system. Therefore, the requirements for real-time, accuracy and reliability of communication are very high. However, due to the particularity of communication electronic equipment components and the strict requirements on ambient temperature, it is necessary to maintain the stability of the air conditioning facilities in the computer room environment of communication electronic equipment. It is a favorable guarantee to ensure the normal operation of communication equipment.

In the high temperature weather every summer, the communication dispatching monitoring system will receive an alarm signal that the temperature of the communication room of the substation is too high. After this situation occurs, the on-duty personnel will notify the local on-duty personnel of the substation to check the reason in the communication room. More than 97% of them are due to the air conditioner. The external heat sink is blocked, and the protection shutdown caused by poor heat dissipation will cause an alarm for the high temperature of the communication room of the substation. The on-duty personnel of the substation resets the air conditioner and restarts it. In this way, the whole process from the alarm to find the problem, the notification to find the cause, and the reset of the air conditioner takes more than an hour, and sometimes it takes longer, which brings hidden dangers to the safe and stable operation of the equipment. Excessive burning of the board causes communication interruption. Analysis of the reasons for the downtime of the air conditioner is due to the large number of equipment in the computer room, the large heat dissipation, the high outdoor temperature, and the high voltage protection caused by the long-term non-stop operation of the air conditioner (the character "E" appears on the air conditioner panel). How to automatically start again after the air conditioner is protected and shut down is the key to solving the above problems, and it is also a new topic for relevant technical personnel.

Contents of the invention

In order to solve the above-mentioned technical problems in the prior art, the object of the present invention is to provide a self-diagnosis and self-starting device for protection and protection of the air conditioner in a computer room that can automatically detect the shutdown status and automatically reset and start.

In order to achieve the above object, the technical solution adopted by the present invention is: the self-diagnosis and self-starting device for the protection and protection of the air conditioner in the computer room, which is characterized in that it has an air-conditioning protection self-diagnosis and self-starting module connected to the main control board of the air conditioner, and the air conditioner described in the timing circuit The protection self-diagnosis and self-starting modules respectively detect the compressor temperature sensor, exhaust pressure sensor signal and compressor stop signal. When the above signals appear at the same time, it means that the air conditioner is shut down due to high-voltage protection, thereby triggering the timing circuit. When the time is up, the air conditioner will be protected. The self-diagnosis and self-starting module detects the signals of the compressor temperature sensor and the exhaust pressure sensor again, and the signals return to normal, then powers off the main control board and resets, and starts the air conditioner.

The main control board of the air conditioner controls the solenoid valve and the cleaning brush motor of the water gun nozzle located at the radiator of the outdoor unit. The water gun nozzle is connected to the pressure water pipe, and the output shaft of the cleaning brush motor is connected to the brush. edge, the bristles extend into the radiator gap.

The beneficial effect of adopting the above technical solution: the self-diagnosis and self-starting device for the protection and shutdown of the air conditioner in the computer room can detect the compressor temperature sensor, the discharge pressure sensor signal and the compressor shutdown signal in real time. It is because the air conditioner shuts down caused by high voltage protection, which triggers the timing circuit. After the time is up, the module will detect whether the sensor signal returns to normal. If it is normal, the main control board of the air conditioner will be powered off and reset, and then the air conditioner will be restarted. Generally, it will not exceed 20 minutes. The control of this structure is simple and reliable, will not damage the air conditioner, guarantees the long-term operation of the air conditioner with the shortest downtime (20 minutes), and realizes the cooling requirements of the equipment in the computer room. According to the statistics of temperature rise rate, due to the outage of the cooling facilities in the general computer room, the over-temperature alarm is not less than 45 minutes. Therefore, timely reset operation of the air conditioner can ensure that the electronic components in the computer room do not overheat and ensure the safe and stable operation of communication equipment. In practice, the reason for the high-voltage protection of the air conditioner is that the radiator of the outdoor unit is blocked by debris such as dust, flying velvet, branches and leaves, resulting in poor heat dissipation. The water gun nozzle installed at the radiator position of the outdoor unit, when shutting down due to high-voltage protection, the solenoid valve of the water nozzle nozzle controlled by the main control board of the air conditioner is opened, and the radiator is washed by high-pressure water. At the same time, the main control board of the air conditioner controls The brush rotates to scrub the radiator, so as to remove the sundries attached to the radiator that affect heat dissipation, ensure the normal heat dissipation of the radiator, minimize the phenomenon of high-voltage protection shutdown caused by poor heat dissipation, and ensure the safety and reliability of the air conditioner running.

Description of drawings

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a functional block diagram of the control system of the present invention.

Detailed ways

As shown in Figure 1, the self-diagnosis and self-starting device for the protection and protection of the air conditioner in the computer room has an air-conditioning protection self-diagnosis and self-starting module connected to the main control board of the air conditioner. Temperature sensor, discharge pressure sensor signal and compressor stop signal, when the above signals appear at the same time, it means that the air conditioner is shut down due to high pressure protection, thus triggering the timing circuit, delaying the time, so that the radiator temperature drops, and the air conditioner protection self-diagnosis when the time is up , The self-starting module detects the signals of the compressor temperature sensor and the exhaust pressure sensor again, and the signals return to normal, then powers off and resets the main control board, and starts the air conditioner.

The main control board of the air conditioner controls the solenoid valve of the water gun nozzle 4 located at the radiator position of the outdoor unit and the cleaning brush motor 1, the water gun nozzle 4 is connected to the pressure water pipe, the output shaft of the cleaning brush motor 1 is connected to the brush 2, and the brush Located on the edge of the radiator 3 of the outdoor unit, the bristles extend into the radiator gap. When shutting down due to high-pressure protection, the high-pressure water washes the radiator, and at the same time, the brush controlled by the main control board of the air conditioner rotates to scrub the radiator, thereby removing the sundries attached to the radiator that affect heat dissipation, ensuring Normal cooling of the radiator.

Claims (1)

1. self diagnosis self-starting device is shut down in a kind of air conditioner in machine room protection protection, it is characterised in that：With with air-conditioning master control borad connect Air-conditioning the protection self diagnosis, self-starting module connect, timing circuit, the air-conditioning protection self diagnosis, self-starting module detect respectively Compressor temperature sensor, back pressure transducer signal and compressor shutdown signal, when above-mentioned signal occurs simultaneously, illustrate because Air-conditioning caused by high voltage protective is shut down, to trigger timing circuit, is delayed, is declined radiator temperature, and the time, then air-conditioning was protected Shield self diagnosis, self-starting module detect compressor temperature sensor, back pressure transducer signal again, and signal restores normal, To master control borad power-off restoration, start air-conditioning；The air-conditioning master control borad control is located at the Water-syringe shospay nozzle of outdoor unit heat sink location Solenoid valve and hair brush motor of removing contamination, Water-syringe shospay nozzle connect penstocks, and hair brush motor of removing contamination exports axis connection hairbrush, and hairbrush is located at Outdoor unit radiator edge, bristle stretch to radiator inner space, when being shut down because of high voltage protective, high pressure water to radiator into Row rinses, meanwhile, radiator is scrubbed in the hairbrush rotation of air-conditioning master control borad control.