阅读说明：本技术 一种水冷空调机组预冷控制方法 (Precooling control method for water-cooled air conditioning unit ) 是由 郭昭明 顾采汝 郭筱祺 于 2021-08-26 设计创作，主要内容包括：本发明涉及一种水冷空调机组预冷控制方法,具体步骤包括：S1、水冷空调机组启动后,系统开始判断停机时间t是否超过系统设定的停机时间T；S2、若系统判断的停机时间t小于系统设定的停机时间T时,系统向风机发出反向转动的信号指令,反转8s-10s后系统向风机发出正向转动的信号指令；S3、若系统判断的停机时间t大于等于系统设定的停机时间T时,系统向水泵发出开启的信号指令,从而实现对湿帘的浸湿预冷；S4、系统向风机发出反向转动的信号指令,风机正常运行,从而实现制冷。本发明具有如下优点：保证水冷空调每次开机后吹入室内的气流都是经过降温的室外新鲜空气,在给指定空间起到降温加湿的同时,增加使用者的体验感。(The invention relates to a precooling control method of a water-cooling air conditioning unit, which comprises the following specific steps: s1, after the water-cooled air conditioning unit is started, the system starts to judge whether the shutdown time T exceeds the shutdown time T set by the system; s2, if the system judges that the downtime T is less than the system-set downtime T, the system sends a signal instruction of reverse rotation to the fan, and after 8-10S of reverse rotation, the system sends a signal instruction of forward rotation to the fan; s3, if the stop time T judged by the system is more than or equal to the stop time T set by the system, the system sends a starting signal instruction to the water pump, so that the wet curtain is wetted and precooled; and S4, the system sends a signal instruction of reverse rotation to the fan, and the fan operates normally, so that refrigeration is realized. The invention has the following advantages: the air flow that insufflates into after guaranteeing that water-cooled air conditioner starts at every turn indoor all is the outdoor fresh air through the cooling, when playing the cooling humidification for appointed space, increases user's experience and feels.)

1. A precooling control method of a water-cooled air conditioning unit is characterized by comprising the following specific steps:

s1, after the water-cooled air conditioning unit is started, the system starts to judge whether the shutdown time T exceeds the shutdown time T set by the system;

s2, if the system judges that the downtime T is less than the system set downtime T, the system sends a signal instruction of reverse rotation to the fan, at the moment, the fan discharges the hot air remained in the air supply pipeline of the water-cooled air conditioning unit, after 8-10S of reverse rotation, the system sends a signal instruction of forward rotation to the fan, at the moment, the fan introduces the outdoor air flow into the wet curtain and introduces the cooled air flow into the room under the evaporative refrigeration action of the wet curtain;

s3, if the stop time T judged by the system is more than or equal to the stop time T set by the system, the system sends a signal instruction for starting the water pump, and the water pump pumps and sprays water in the water-cooled air conditioning unit to the wet curtain, so that the wet curtain is wetted and precooled;

and S4, the system sends a signal instruction of reverse rotation to the fan, hot air remained in an air supply pipeline of the water-cooled air conditioning unit is discharged, the system sends a signal instruction of forward rotation to the fan after being turned for 8-10S, the fan operates normally, and at the moment, the fan introduces outdoor airflow into the wet curtain and introduces cooled airflow into a room under the evaporation refrigeration effect of the wet curtain, so that refrigeration is realized.

2. The method for controlling precooling of the water-cooled air conditioning unit according to claim 1, wherein in the step S3, the operation time of the water pump is 1min to 2 min.

The technical field is as follows:

the invention relates to the field of water-cooled air conditioners, in particular to a precooling control method for a water-cooled air conditioner unit.

Background art:

according to the natural physical phenomenon that 'water evaporation absorbs heat and evaporation area affects evaporation efficiency', when a fan operates, negative pressure is generated in a cavity of an air conditioner, air outside the air conditioner flows into a porous wet curtain surface to enter the cavity, the air is fully contacted with moisture, water on the wet curtain is evaporated, a large amount of damp heat is taken away, and the temperature of dry air balls passing through the wet curtain is reduced to be close to that of the wet air balls outside the air conditioner, namely the temperature of the dry air balls at an outlet of the air conditioner is 5-12 ℃ lower than that of outdoor dry air balls (the temperature of a dry heat area can reach 15 ℃), the temperature difference is larger, the cooling effect is better, and meanwhile, the environment-friendly air conditioner utilizes the evaporation cooling principle, so that the water-cooled air conditioner has dual functions of cooling and humidifying.

But the experience effect is not ideal in the process of actually using the water-cooled air conditioner, and particularly the water-cooled air conditioner is used for the first time or is used again at long intervals. The main points are as follows: when the machine is started to operate, a shower of hot air is firstly blown into the air outlet, and cool air flow is blown into the air outlet after the duration of 3-5 minutes. And the same situation occurs when the water-cooled air conditioner is used again if it is turned off for a long time without use. The reason is mainly that the water-cooled air conditioning system does not perform an effective precooling process when being started, so that dry hot air is directly blown into a room, and the experience effect is poor.

The air supply system of the water-cooled air conditioner is an air pipe system, and air flow sent into a room needs to enter a wet curtain for cooling and then enters the room through an air duct. The hot air is delivered for two reasons, namely, before the wet curtain is completely soaked, the fan starts to operate, and at the moment, the outdoor air passes through the wet curtain, but the wet curtain hardly works; and on the other hand, the airflow which is not cooled is remained from the rear end of the wet curtain to the air duct part. When the water-cooling air conditioner fan is started, the airflow from the rear end of the wet curtain to the air duct is firstly sent into the room under the action of the fan, and then the outdoor air which is not cooled is sent into the room, so that a user can feel that cold air is blown in after hot air is blown in for a period of time. This phenomenon continues until the wet curtain is completely wetted, and the outdoor air passing through the wet curtain is cooled.

The invention content is as follows:

the invention aims to overcome the defects and provides a pre-cooling control method of a water-cooling air conditioning unit, which ensures that air flow blown into a room after the water-cooling air conditioner is started each time is outdoor fresh air subjected to cooling, and increases the experience of a user while cooling and humidifying a specified space.

The purpose of the invention is realized by the following technical scheme: a precooling control method for a water-cooled air conditioning unit comprises the following specific steps:

s1, after the water-cooled air conditioning unit is started, the system starts to judge whether the shutdown time T exceeds the shutdown time T set by the system;

s2, if the system judges that the downtime T is less than the system set downtime T, the system sends a signal instruction of reverse rotation to the fan, at the moment, the fan discharges the hot air remained in the air supply pipeline of the water-cooled air conditioning unit, after 8-10S of reverse rotation, the system sends a signal instruction of forward rotation to the fan, at the moment, the fan introduces the outdoor air flow into the wet curtain and introduces the cooled air flow into the room under the evaporative refrigeration action of the wet curtain;

s3, if the stop time T judged by the system is more than or equal to the stop time T set by the system, the system sends a signal instruction for starting the water pump, and the water pump pumps and sprays water in the water-cooled air conditioning unit to the wet curtain, so that the wet curtain is wetted and precooled;

and S4, the system sends a signal instruction of reverse rotation to the fan, hot air remained in an air supply pipeline of the water-cooled air conditioning unit is discharged, the system sends a signal instruction of forward rotation to the fan after being turned for 8-10S, the fan operates normally, and at the moment, the fan introduces outdoor airflow into the wet curtain and introduces cooled airflow into a room under the evaporation refrigeration effect of the wet curtain, so that refrigeration is realized.

The invention is further improved in that: in step S3, the running time of the water pump is 1min-2 min.

Compared with the prior art, the invention has the following advantages:

after the water-cooling air conditioning system is started, the system judges the opening and closing sequence of the water pump and the fan according to the shutdown time of the water-cooling air conditioning unit, if T is less than T, the wet curtain is still in a wetted state, at the moment, the water pump does not need to be started, the residual hot air in the air supply pipeline only needs to be discharged by reversing the fan, and normal refrigeration can be realized by rotating the fan at the hot air outlet forward; if T is larger than or equal to T, the wet curtain is in a dry state, the water pump is started to soak the wet curtain, then the fan is rotated reversely to discharge hot air remained in the air supply pipeline, and the hot air is discharged out of the fan to rotate positively to realize normal refrigeration. The precooling control method in the application can effectively carry out precooling on the introduced indoor outdoor airflow, and can judge whether precooling operation is needed before the operation of the fan at each time, and the precooling control method and the precooling operation are effectively combined, so that the condition that the airflow blown into the room after the water-cooled air conditioner is started at each time is outdoor fresh air through cooling can be ensured, and the experience feeling of a user is increased while cooling and humidifying are played for a specified space.

Description of the drawings:

fig. 1 is a schematic diagram illustrating a wet curtain control method of a water-cooled air conditioning unit according to the present invention.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Referring to fig. 1, the invention discloses a specific implementation of a pre-cooling control method for a water-cooling air conditioning unit, which comprises the following specific steps:

s1, after the water-cooled air conditioning unit is started, the system starts to judge whether the shutdown time T exceeds the shutdown time T set by the system;

s2, if the system judges that the downtime T is less than the system set downtime T, the system sends a signal instruction of reverse rotation to the fan, at the moment, the fan discharges the hot air remained in the air supply pipeline of the water-cooled air conditioning unit, after 8-10S of reverse rotation, the system sends a signal instruction of forward rotation to the fan, at the moment, the fan introduces the outdoor air flow into the wet curtain and introduces the cooled air flow into the room under the evaporative refrigeration action of the wet curtain;

s3, if the stop time T judged by the system is more than or equal to the stop time T set by the system, the system sends a signal instruction for starting the water pump, and the water pump pumps and sprays water in the water-cooled air conditioning unit to the wet curtain, so that the wet curtain is wetted and precooled;

and S4, the system sends a signal instruction of reverse rotation to the fan, hot air remained in an air supply pipeline of the water-cooled air conditioning unit is discharged, the system sends a signal instruction of forward rotation to the fan after being turned for 8-10S, the fan operates normally, and at the moment, the fan introduces outdoor airflow into the wet curtain and introduces cooled airflow into a room under the evaporation refrigeration effect of the wet curtain, so that refrigeration is realized.

Further, in step S3, the water pump operation time is 1min-2 min.

After the water-cooling air conditioning system is started, the system judges the opening and closing sequence of the water pump and the fan according to the shutdown time of the water-cooling air conditioning unit, if T is less than T, the wet curtain is still in a wetted state, at the moment, the water pump does not need to be started, the residual hot air in the air supply pipeline only needs to be discharged by reversing the fan, and normal refrigeration can be realized by rotating the fan at the hot air outlet forward; if T is larger than or equal to T, the wet curtain is in a dry state, the water pump is started to soak the wet curtain, then the fan is rotated reversely to discharge hot air remained in the air supply pipeline, and the hot air is discharged out of the fan to rotate positively to realize normal refrigeration. The precooling control method in the application can effectively carry out precooling on the introduced indoor outdoor airflow, and can judge whether precooling operation is needed before the operation of the fan at each time, and the precooling control method and the precooling operation are effectively combined, so that the condition that the airflow blown into the room after the water-cooled air conditioner is started at each time is outdoor fresh air through cooling can be ensured, and the experience feeling of a user is increased while cooling and humidifying are played for a specified space.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.