CN114593499A

CN114593499A - Nozzle filth blockage identification method and device

Info

Publication number: CN114593499A
Application number: CN202210238874.5A
Authority: CN
Inventors: 曾海源; 颜利波; 王峰
Original assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-06-07
Anticipated expiration: 2042-03-11
Also published as: CN114593499B

Abstract

The application provides a nozzle filth blockage identification method and a device, and the method comprises the following steps: controlling the air conditioning unit to start, and entering a dirty blockage identification mode after the air conditioning unit stably runs; recording a first high-pressure parameter value or a first exhaust temperature value of the air conditioning unit; controlling each nozzle to be independently opened in turn, and recording a second high-pressure parameter value or a second exhaust temperature value of the air conditioning unit when each nozzle is independently opened; determining whether the nozzle is dirty or not according to the second high pressure parameter value or the second exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value; and if the nozzle is clogged, outputting the clogging prompt information matched with the nozzle. Therefore, the method can automatically identify the dirty and blocked condition of the nozzle and carry out automatic alarm prompt based on the dirty and blocked condition of the nozzle.

Description

Nozzle filth blockage identification method and device

Technical Field

The application relates to the technical field of air conditioners, in particular to a nozzle filth blockage identification method and device.

Background

The existing air conditioning unit has the problems of poor heat dissipation of a condenser, insufficient refrigerating capacity and large power consumption of a compressor in the refrigerating process due to the limited installation space. In order to solve the problem, at present, a spraying device is generally used in an air conditioning unit to achieve the effects of effectively reducing load and improving unit energy efficiency.

However, in practice, it has been found that the nozzles in the spraying device are generally precise, have small aperture and are prone to be clogged, and once clogged, the spraying effect is greatly affected. Currently, to avoid the problem of a dirty shower, the air conditioner is usually checked regularly by the relevant engineer. It can be seen that the current method is very dependent on engineers and cannot realize automatic filth identification.

Disclosure of Invention

The embodiment of the application aims to provide a nozzle filth blockage identification method and device, which can automatically identify the nozzle filth blockage situation and carry out automatic alarm prompt based on the nozzle filth blockage situation.

A first aspect of the embodiments of the present application provides a nozzle dirtying identification method, including:

controlling an air conditioning unit to start, and entering a filth blockage identification mode after the air conditioning unit stably runs;

recording a first high-pressure parameter value or a first exhaust temperature value of the air conditioning unit;

controlling each nozzle to be independently opened in turn, and recording a second high-pressure parameter value or a second exhaust temperature value of the air conditioning unit when each nozzle is independently opened;

determining whether dirty blockage exists in the nozzle or not according to the second high-pressure parameter value or the second exhaust temperature value and the first high-pressure parameter value or the first exhaust temperature value;

and if the nozzle is dirty and blocked, outputting dirty and blocking prompt information matched with the nozzle.

By applying the technical scheme of the application, the method at least has the following beneficial effects: recording an initial high-pressure parameter value or an initial exhaust temperature value of the air conditioning unit when the air conditioning unit stably operates, so that the obtained parameter value can be ensured to be stable and reliable, and the subsequent nozzle filth blockage identification is facilitated; spraying control is carried out on each nozzle in turn, so that the dirty blockage condition of each nozzle can be conveniently identified, and the accurate dirty blockage condition of each nozzle can be obtained; when the nozzle is dirty and blocked, the dirty and blocked prompt information matched with the nozzle is output, so that the machine can know the information that the dirty and blocked nozzle needs to be washed, and the washing of the nozzle is automatically completed, so that the cleanness of the nozzle is ensured, and the use efficiency of the air conditioning unit is improved.

Further, the method further comprises:

and if all the nozzles are not dirty and blocked, the dirty and blocked identification mode is exited, and the air conditioning unit continues to normally operate.

By applying the technical scheme of the application, the method at least has the following beneficial effects: the dirty plug recognition mode can be exited when all nozzles are not dirty plugged.

Further, the method further comprises:

if all the nozzles are not dirty and blocked, controlling all the nozzles to be started, and recording a third high-pressure parameter value or a third exhaust temperature value of the air conditioning unit when all the nozzles are started;

and determining a dirty blockage identification result according to the third high pressure parameter value or the third exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value.

By applying the technical scheme of the application, the method at least has the following beneficial effects: when the condition that the nozzles are not dirty and blocked is detected in the round inspection process, integral dirty and blocking identification is carried out once, so that an integral dirty and blocking identification result is obtained.

Further, after the outputting of the dirty blockage prompt information matched with the nozzle, the method further includes:

determining the filth blockage nozzle according to the filth blockage prompt information, and flushing the filth blockage nozzle;

controlling all nozzles to be opened after flushing is finished, and recording a third high-pressure parameter value or a third exhaust temperature value of the air conditioning unit when all the nozzles are opened;

By applying the technical scheme of the application, the method at least has the following beneficial effects: when the dirty blockage nozzle is detected in the round inspection process, integral dirty blockage identification is carried out again, and therefore an integral dirty blockage identification result is obtained.

Further, the controlling the air conditioning unit to start and enter a filth blockage identification mode after the air conditioning unit runs stably comprises:

controlling the starting of the air conditioning unit;

and when the air conditioning unit operates to the maximum frequency, and after the air conditioning unit is controlled to wait for a preset stable operation time, entering a dirty blockage identification mode.

By applying the technical scheme of the application, the method at least has the following beneficial effects: the stable operation of the air conditioning unit can be ensured, so that the subsequent steps can be conveniently expanded.

Further, the determining whether the nozzle is dirty or not according to the second high pressure parameter value or the second exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value includes:

calculating a difference value between the first high pressure parameter value and the second high pressure parameter value to obtain a first difference value, or calculating a difference value between the first exhaust temperature value and the second exhaust temperature value to obtain a first difference value;

if the first difference value is smaller than a first preset filth blockage threshold value, determining that the nozzle is filth-blocked;

and if the first difference value is larger than or equal to the first preset dirty blocking threshold value, determining that the nozzle is not dirty blocked.

By applying the technical scheme of the application, the method at least has the following beneficial effects: the method can accurately identify whether the nozzle is dirty or not, so that the accuracy of identifying the dirty and blocked nozzle is improved.

Further, the outputting of the filth blockage prompt information matched with the nozzle includes:

and turning on an indicator light corresponding to the nozzle.

By applying the technical scheme of the application, the method at least has the following beneficial effects: can be for filthy blockage nozzle through pilot lamp suggestion spray set and user to realize the effect of real-time public filthy blockage discernment result.

Further, the determining a dirty blockage identification result according to the third high pressure parameter value or the third exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value includes:

calculating a difference value between the first high pressure parameter value and the third high pressure parameter value to obtain a second difference value, or calculating a difference value between the first exhaust temperature value and the third exhaust temperature value to obtain a second difference value;

if the second difference value is smaller than a second preset filth blockage threshold value, determining that a filth blockage identification result is a filth blockage;

and if the second difference is larger than or equal to the second preset filth blockage threshold value, determining that the filth blockage identification result is that the filth blockage does not occur.

By applying the technical scheme of the application, the method at least has the following beneficial effects: the method can verify whether the nozzle is dirty or not, so that the accuracy of identifying the dirty nozzle is further improved.

Further, the method comprises:

if the dirty blockage identification result indicates that dirty blockage occurs, controlling the spraying device to stop running, outputting fault prompt information, and exiting the dirty blockage identification mode;

and if the dirty blockage identification result indicates that dirty blockage does not occur, quitting the dirty blockage identification, and normally operating the air conditioning unit.

By applying the technical scheme of the application, the method at least has the following beneficial effects: the effect of automatically controlling the spraying device and the air conditioning device can be realized after the comprehensive judgment stage.

Further, the outputting the fault indication information includes:

and controlling the buzzer to output a spraying fault prompt tone.

In the tissue embodiment, the user can be notified of the existence of the filthy nozzle by the buzzer.

A second aspect of the embodiments of the present application provides a nozzle filth blockage identifying device, including:

the control unit is used for controlling the air conditioning unit to start and entering a filth blockage identification mode after the air conditioning unit stably runs;

the recording unit is used for recording a first high-pressure parameter value or a first exhaust temperature value of the air conditioning unit;

the independent identification unit is used for controlling each nozzle to be independently opened in turn and recording a second high-pressure parameter value or a second exhaust temperature value of the air conditioning unit when each nozzle is independently opened;

the independent determination unit is used for determining whether dirty blockage exists in the nozzle or not according to the second high pressure parameter value or the second exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value;

and the prompting unit is used for outputting filth blockage prompting information matched with the nozzle when the nozzle is filth blocked.

By applying the technical scheme of the application, the method at least has the following beneficial effects: the nozzle filth blockage situation can be automatically identified, and automatic alarm prompt is carried out based on the nozzle filth blockage situation.

A third aspect of the embodiments of the present application provides an electronic device, including a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to make the electronic device execute the nozzle dirtiness identification method according to any one of the first aspect of the embodiments of the present application.

A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, which stores computer program instructions, and when the computer program instructions are read and executed by a processor, the method for identifying a nozzle dirty block according to any one of the first aspect of the embodiments of the present application is performed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic flowchart of a nozzle filth identification method according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of another nozzle dirtying identification method according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a nozzle filth blockage identification device according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another nozzle dirtying identification device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a spraying device provided in an embodiment of the present application;

fig. 6 is a schematic circuit structure diagram of a control module in a spraying device according to an embodiment of the present disclosure;

fig. 7 is a schematic process diagram of a dirty block identification process according to an embodiment of the present disclosure;

reference numerals: 401-a water pump; 402-a first solenoid valve; 403-a second solenoid valve; 404-a first nozzle; 405-second nozzle: 406-a first indicator light; 407-a second indicator light; 408-a buzzer; 501-a condenser; 502-a high pressure sensor; 503-exhaust bulb.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

Example 1

Referring to fig. 1, fig. 1 is a schematic flow chart of a nozzle dirtying identification method according to the present embodiment. The nozzle filth blockage identification method comprises the following steps:

s101, controlling the air conditioning unit to start, and entering a filth blockage identification mode after the air conditioning unit stably runs.

In the embodiment, the method can automatically control the start of the air conditioning unit and wait for the automatic operation t1 (t 1 is less than or equal to 9min and less than or equal to 12min) of the air conditioning unit (the time of the unit start stay platform plus the time required by the maximum operation frequency is about 9min, and 0-3 min is added on the basis to enable the air conditioning unit to operate stably).

For example, after the method controls the air conditioning unit to start, the method needs to wait for 9 to 12 minutes for the air conditioning unit to operate, so as to ensure that the air conditioning unit operates stably.

The air conditioning unit can theoretically reach a stable operation state when operating for 9 minutes, and because the air conditioning unit can reach the maximum operation frequency when operating for 9 minutes, the maximum frequency can be kept unchanged when the air conditioning unit is out of the state, and therefore, the stable operation can be theoretically realized at the moment. However, the method reserves 3 minutes, and aims to eliminate unstable factors in the 3 minutes and perform stable operation detection so as to guarantee the stable operation of the air conditioning unit.

In this embodiment, the stable operation of the air conditioning unit means that the operating frequency of the air conditioning unit is basically kept unchanged.

And S102, recording a first high-pressure parameter value or a first exhaust temperature value of the air conditioning unit.

In the embodiment, after the air conditioning unit stably runs, the method records an initial first high-pressure parameter value Pd1 of the air conditioning unit; while alternatively the initial first exhaust temperature value Th1 may be recorded.

In this embodiment, the high-pressure parameter Pd of the air conditioning unit may be detected by a high-pressure sensor 502 of the air conditioning unit; the exhaust temperature Th may be detected by an exhaust bulb 503 of the air conditioning unit.

In this embodiment, the step of recording the first high pressure parameter value or the first exhaust temperature value of the air conditioning unit occurs after the air conditioning unit is stably operated. It will be understood that from this step all steps are performed after the air conditioning unit has been in stable operation.

S103, controlling each nozzle to be independently opened in turn, and recording a second high-pressure parameter value or a second exhaust temperature value of the air conditioning unit when each nozzle is independently opened.

And S104, determining whether the nozzle is dirty or not according to the second high-pressure parameter value or the second exhaust temperature value and the first high-pressure parameter value or the first exhaust temperature value.

In this embodiment, the method may first perform a spray test on the first nozzle, then record a second high pressure parameter value or a second exhaust temperature value of the nozzle, and then determine whether the nozzle is dirty or not based on the second high pressure parameter value or the second exhaust temperature value; after that, the method can also carry out the dirty blockage identification on the second nozzle and the third nozzle, and thus the effects of alternately controlling and identifying the dirty blockage are realized.

And S105, if the nozzle is clogged, outputting a clogging prompt message matched with the nozzle.

In the embodiment, the method can prompt the dirty blockage of the dirty blockage nozzle in the modes of display, sound and the like, so that both the machine and related people can know the dirty blockage condition of the spray head, and subsequent cleaning operation is facilitated.

In this embodiment, the execution subject of the method may be a computing device such as a computer and a server, and is not limited in this embodiment.

In this embodiment, an execution subject of the method may also be an intelligent device such as a smart phone and a tablet computer, which is not limited in this embodiment.

It can be seen that, by implementing the nozzle filth blockage identification method described in this embodiment, the air conditioning unit can be preferentially started, so that the air conditioning unit can perform nozzle filth blockage identification when stably running; at the moment, the high-pressure parameter or the exhaust temperature of the air conditioning unit is recorded, so that the obtained parameter value is stable and reliable, and the subsequent identification and judgment of the dirty and blocked nozzles are facilitated; then, the method carries out spray control on each nozzle in turn and automatically records the high-pressure parameter or the exhaust temperature when each nozzle carries out spray, so that whether the nozzle is dirty or not can be confirmed by calculating the high-pressure parameter difference or the exhaust temperature difference, and the effect of real-time automatic nozzle dirty and blockage identification is further realized; finally, the method can output the nozzle filth blockage prompt information when the existence of the filth blockage nozzle is determined, so that the water pump can pressurize and flush the nozzle, the cleanness of the nozzle is guaranteed, and the use efficiency of the air conditioning unit is improved.

Example 2

Referring to fig. 2, fig. 2 is a schematic flow chart of a nozzle dirtying identification method according to the present embodiment. The nozzle filth blockage identification method comprises the following steps:

s201, controlling the air conditioning unit to start, and entering a filth blockage identification mode after the air conditioning unit stably runs.

As an optional implementation manner, controlling the air conditioning unit to start and enter a filth blockage identification mode after the air conditioning unit stably operates includes:

controlling the starting of the air conditioning unit;

and when the air conditioning unit operates to the maximum frequency, and after the air conditioning unit is controlled to wait for a preset stable operation time, entering a filth blockage identification mode.

In this embodiment, the time period for waiting for the air conditioning unit to operate to the maximum frequency is about 9 min.

In the embodiment, the stable operation time is 0-3 min.

And S202, recording a first high-pressure parameter value or a first exhaust temperature value of the air conditioning unit.

And S203, controlling each nozzle to be independently opened in turn, and recording a second high-pressure parameter value or a second exhaust temperature value of the air conditioning unit when each nozzle is independently opened.

And S204, determining whether the nozzle is dirty or not according to the second high-pressure parameter value or the second exhaust temperature value and the first high-pressure parameter value or the first exhaust temperature value.

As an alternative embodiment, the step of determining whether the nozzle is dirty or not according to the second high pressure parameter value or the second exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value includes:

calculating the difference value between the first high-pressure parameter value and the second high-pressure parameter value to obtain a first difference value, or calculating the difference value between the first exhaust temperature value and the second exhaust temperature value to obtain a first difference value;

and if the first difference is larger than or equal to a first preset dirty blockage threshold value, determining that the nozzle is not dirty blocked.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a spraying device provided in this embodiment; referring to fig. 6, fig. 6 is a schematic circuit structure diagram of a control module in a spraying device according to the present embodiment. The explanation and the application based on fig. 5 and fig. 6 are detailed in the following embodiments.

In this embodiment, fig. 5 shows a spraying device capable of recognizing the dirty nozzle blockage. The water pump 401 pumps the inlet water into the spraying module, and then the control module controls the electromagnetic valve to start the nozzle to spray the condenser 501. In addition, the spray device is provided with not only the water pump 401, the solenoid valve and the nozzle connected with the solenoid valve, but also a high pressure sensor 502, and the high pressure sensor 502 can be replaced by a temperature sensor. The high pressure sensor 502 and the temperature sensor may acquire high pressure parameters and temperature parameters, thereby facilitating identification of a dirty nozzle condition.

In this embodiment, the spraying device in fig. 5 is further detailed in fig. 6, wherein the solenoid valve is paired with an indicator light, the electronic valve is used for controlling spraying, the indicator light is used for indicating abnormal spraying, and the buzzer 408 is used for indicating abnormal spraying module. Wherein, the first indicator light 406, the first electromagnetic valve 402 and the first nozzle 404 are matched; the second indicator light 407, the second electromagnetic valve 403 and the second nozzle 405 are matched.

In this embodiment, the method may open the first solenoid valve 402 and simultaneously close the second solenoid valve 403 to avoid spraying by the second nozzle 405 through the control module shown in fig. 5 and 6. At this time, the first nozzle 404 sprays the unit condenser 501, after a certain time t2 (t 2 is more than or equal to 1min and less than or equal to 3min, 1min is used for representing theoretical stable spraying time, and 3min is used for representing actual stable spraying time), the air conditioning unit records the high pressure Pd2, performs dirty block judgment, judges whether the pressure difference satisfies that delta P is Pd1-Pd2 and more than or equal to Ps1(0.03MPa and more than or equal to Ps1 and less than or equal to 0.06MPa) (determined according to sensor precision and experimental data), and transmits a signal to a control module of the spraying device for control after detection and judgment of the air conditioning unit.

In the embodiment, the pressure difference that Δ P ═ pd1-pd2 is greater than or equal to Ps1(0.03Mpa is less than or equal to Ps1 is less than or equal to 0.06Mpa) means that there is no visceral obstruction, otherwise, it means that there is visceral obstruction.

In this embodiment, the first electromagnetic valve 402 is opened and the second electromagnetic valve 403 is closed by the control module to prevent the second nozzle 405 from spraying, the unit condenser 501 is sprayed by the first nozzle 404, after spraying for a certain time t2 (t 2 is not less than 1min and not more than 3min, 1min is used for representing theoretical stable spraying time, and 3min is used for representing actual stable spraying time), the air conditioning unit records the exhaust temperature Th2 of this time, performs dirty block judgment, judges whether the temperature difference satisfies Δ Th1-Th2 which is not less than Ts1 (Ts 1 is not less than 0.5 ℃ and not more than 1.5 ℃) (determined according to sensor precision and experimental data), and transmits a signal to the control module of the spraying device to control after detection and judgment of the air conditioning unit.

In the embodiment, the temperature difference satisfying that Δ Th is Th1-Th2 is not less than Ts1(0.5 ℃ ≦ Ts1 ≦ 1.5 ℃) means that there is no visceral obstruction, otherwise, it means that there is a visceral obstruction.

As an optional implementation manner, if all the nozzles are not dirty, the dirty-blockage identification mode is exited, the air conditioning unit continues to operate normally, and step S207 is executed.

And S205, if the nozzle is dirty, outputting dirty blockage prompt information matched with the nozzle.

As an optional implementation manner, outputting the dirty blockage prompting information matched with the nozzle includes:

and turning on an indicator lamp corresponding to the nozzle.

In the embodiment, when the calculated pressure difference and the calculated temperature difference are judged not to meet the pressure difference requirement or the temperature difference requirement, the indicator lamp corresponding to the control electromagnetic valve is turned on; otherwise, no processing is performed.

In this embodiment, each determination is separate. Therefore, after each judgment is finished, the method can close the electromagnetic valve and open the next electromagnetic valve, and each nozzle is controlled one by one to be judged until all the electromagnetic valves are judged one by one.

And S206, determining the filth blockage nozzle according to the filth blockage prompting information, flushing the filth blockage nozzle, and executing the step S207 after the flushing is finished.

In the embodiment, if the nozzle is dirty and blocked, the method can be used for flushing the dirty and blocked nozzle in a mode of increasing water pressure.

In this embodiment, if all the nozzles Δ P satisfy the requirement, the comprehensive judgment stage (i.e., the subsequent step) is performed.

In this embodiment, in step S205, the water pump 401 may be turned on, the second electromagnetic valve 403 may be turned off, the second nozzle 405 may be prevented from spraying, and the first electromagnetic valve 402 may be turned on at the same time to flush the first nozzle 404 by t3 (t 3 is greater than or equal to 10S and less than or equal to 20S, where 10S is used to indicate that the first nozzle can be flushed cleanly in theory, and 20S is used to ensure that the first nozzle is flushed cleanly). After the washing is finished, the electromagnetic valve is closed, the next washing is carried out, and after all the washing is finished one by one, the comprehensive judgment stage is entered.

And S207, controlling all nozzles to be started, and recording a third high-pressure parameter value or a third exhaust temperature value of the air conditioning unit when all the nozzles are started.

As an alternative embodiment, controlling all nozzles to be opened, and recording a third high pressure parameter value or a third exhaust temperature value of the air conditioning unit when all nozzles are opened includes:

controlling all nozzles to spray a condenser 501 of the air conditioning unit; and recording a third high pressure parameter value or a third exhaust temperature value after the preset spraying time.

And S208, determining a dirty blockage identification result according to the third high pressure parameter value or the third exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value.

As an alternative implementation, the step of determining the dirty plug identification result according to the third high pressure parameter value or the third exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value includes:

calculating a difference value between the first high-pressure parameter value and the third high-pressure parameter value to obtain a second difference value, or calculating a difference value between the first exhaust temperature value and the third exhaust temperature value to obtain a second difference value;

and if the second difference value is greater than or equal to a second preset filth blockage threshold value, determining that the filth blockage identification result is that the filth blockage does not occur.

In this embodiment, the method may open all the solenoid valves, so that the solenoid valves spray the condenser 501 for t2 time (t 2 is not less than 1min and not more than 3min), record the high pressure Pd3, and perform filth blockage judgment, if the pressure difference satisfies Δ P ═ Pd3-Pd1 ≥ Ps2(0.08Mpa ≤ Ps2 ≤ 0.15Mpa) (determined according to the minimum effect setting and experimental test of spraying).

In the embodiment, if the condition is met, the nozzle filth blockage judgment is quitted, all the indicating lamps are turned off, and the spraying device and the unit operate under normal control; if not, the spraying device reports a fault, the spraying control module controls the buzzer 408 to be started to give a buzzer alarm prompt, then the spraying device stops spraying, and the air conditioning unit operates according to normal control (another alarm prompt is a method for displaying a fault code by an internal machine line controller).

In this embodiment, the method may open all the electromagnetic valves to spray the condenser 501 for t2 time (t 2 is not less than 1min and not more than 3min), record the exhaust temperature Th3 this time, and perform filth blockage judgment, if the temperature difference satisfies Δ Th1-Th3 which is not less than Ts2 (Ts 2 is not less than 2 ℃andnot more than 4 ℃) (according to the setting of minimum action and experimental test determination of whether spraying is performed).

In the embodiment, when the difference delta P between the comprehensive high-pressure parameter value and the initial high-pressure parameter value is greater than Ps2 (Ps 2 is greater than or equal to 0.08MPa and less than or equal to 0.15 MPa); or when the difference delta T between the comprehensive exhaust temperature value and the initial exhaust temperature value is larger than Ts2 (Ts 2 is more than or equal to 2 ℃ and less than or equal to 4 ℃), the nozzle is considered to be spraying normally.

When the spray nozzle sprays, the high-pressure parameter or the exhaust temperature in the air conditioning unit can be changed. Generally speaking, the variation range of the high-pressure parameter is not small, and similarly, the variation range of the exhaust temperature is not small. Therefore, the method sets a comparison threshold value, and determines whether the variation amplitude of the high-pressure parameter or the variation amplitude of the exhaust temperature is too small according to the threshold value, so that whether the spraying is abnormal or not is determined conveniently.

It will be appreciated that when the pressure differential is small or the temperature differential is small, this is typically due to improper operation of the nozzle, which may be attributed to a dirty nozzle. Therefore, whether the nozzle is dirty or not can be determined by the method.

As an alternative embodiment, the method comprises:

if the dirty blockage identification result is that dirty blockage occurs, controlling the spraying device to stop running, outputting fault prompt information, and exiting from a dirty blockage identification mode;

and if the filth blockage identification result indicates that the filth blockage does not occur, quitting the filth blockage identification and normally operating the air conditioning unit.

As a further optional implementation manner, the step of outputting the fault indication information includes:

and controlling the buzzer to output a spraying fault prompt tone.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating a process of a filth recognition process. As can be seen from steps S201 to S208, fig. 7 shows three stages of alternately controlling the nozzles and performing the dirty block identification (one-by-one judgment stage), flushing interpretation, and controlling all the nozzles and performing the dirty block identification (comprehensive judgment stage). Meanwhile, fig. 7 lists the specific PH hyperbaric variation based on these three phases. It is understood that this case shown in the figure is a normal case, and an image having a large difference therefrom is an abnormal image.

It can be seen that, by implementing the nozzle filth blockage identification method described in this embodiment, the air conditioning unit can be preferentially started, so that the air conditioning unit can perform nozzle filth blockage identification when stably running; at the moment, the high-pressure parameter or the exhaust temperature of the air conditioning unit is recorded, so that the obtained parameter value is stable and reliable, and the subsequent identification and judgment of the dirty and blocked nozzles are facilitated; then, the method carries out spray control on each nozzle in turn and automatically records the high-pressure parameter or the exhaust temperature when each nozzle carries out spray, so that the method can confirm whether the nozzle is dirty or not by calculating the high-pressure parameter difference or the exhaust temperature difference, and further realizes real-time automatic nozzle dirty and blockage identification; after that, the method can output the nozzle filth blockage prompt information when determining that the filth blockage nozzle exists, so that the water pump can pressurize and flush the nozzle, thereby ensuring the cleanness of the nozzle and being beneficial to improving the use efficiency of the air conditioning unit; and then, the method can further comprehensively check all the nozzles without considering the dirty blockage condition obtained by the round inspection, so that the integral dirty blockage identification result is determined, and the identification accuracy of the dirty blockage of the nozzles is further ensured.

Example 3

Referring to fig. 3, fig. 3 is a schematic structural diagram of a nozzle dirtiness identification device provided in this embodiment. As shown in fig. 3, the nozzle clogging recognition apparatus includes:

the control unit 310 is used for controlling the air conditioning unit to start and entering a filth blockage identification mode after the air conditioning unit stably runs;

the recording unit 320 is used for recording a first high-pressure parameter value or a first exhaust temperature value of the air conditioning unit;

the individual identification unit 330 is used for controlling each nozzle to be independently opened in turn and recording a second high-pressure parameter value or a second exhaust temperature value of the air conditioning unit when each nozzle is independently opened;

the individual determination unit 340 is used for determining whether dirty blockage exists in the nozzle according to the second high-pressure parameter value or the second exhaust temperature value and the first high-pressure parameter value or the first exhaust temperature value;

and the prompting unit 350 is configured to output dirty blockage prompting information matched with the nozzle when the nozzle is dirty blocked.

In this embodiment, for the explanation of the nozzle dirtiness identification apparatus, reference may be made to the description in embodiment 1 or embodiment 2, and details are not repeated in this embodiment.

It can be seen that, by implementing the nozzle filth blockage identification device described in this embodiment, the air conditioning unit can be preferentially started, so that the air conditioning unit can perform nozzle filth blockage identification when stably running; at the moment, the high-pressure parameter or the exhaust temperature of the air conditioning unit is recorded, so that the obtained parameter value is stable and reliable, and the subsequent identification and judgment of the dirty and blocked nozzles are facilitated; then, the method carries out spray control on each nozzle in turn and automatically records the high-pressure parameter or the exhaust temperature when each nozzle carries out spray, so that whether the nozzle is dirty or not can be confirmed by calculating the high-pressure parameter difference or the exhaust temperature difference, and the effect of real-time automatic nozzle dirty and blockage identification is further realized; finally, the method can output the nozzle filth blockage prompt information when the existence of the filth blockage nozzle is determined, so that the water pump can pressurize and flush the nozzle, the cleanness of the nozzle is guaranteed, and the use efficiency of the air conditioning unit is improved.

Example 4

Referring to fig. 4, fig. 4 is a schematic structural diagram of a nozzle dirtiness identification device provided in the present embodiment. As shown in fig. 4, the control unit 310 is further configured to exit the dirty block identification mode and continue normal operation of the air conditioning unit when all nozzles are not dirty-blocked.

As an optional embodiment, the control unit 310 is further configured to control all nozzles to be opened when all nozzles are not dirty;

the comprehensive identification unit 360 is used for recording a third high-pressure parameter value or a third exhaust temperature value of the air conditioning unit when all nozzles are opened;

and the comprehensive determination unit 370 is configured to determine a dirty plug identification result according to the third high pressure parameter value or the third exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value.

As an optional embodiment, the nozzle clogging identifying apparatus further includes:

the flushing unit 380 is used for determining the filth blockage nozzle according to the filth blockage prompt information and flushing the filth blockage nozzle;

the comprehensive identification unit 360 is also used for controlling all nozzles to be opened after flushing is finished, and recording a third high-pressure parameter value or a third exhaust temperature value of the air conditioning unit when all nozzles are opened;

the comprehensive determination unit 370 is further configured to determine a dirty plug identification result according to the third high pressure parameter value or the third exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value.

As an alternative embodiment, the control unit 310 includes:

a control subunit 311, configured to control starting of the air conditioning unit;

and a waiting subunit 312, configured to enter a filth blockage identification mode when the air conditioning unit operates to the maximum frequency and after controlling the air conditioning unit to wait for a preset stable operation duration.

As an alternative embodiment, the individual determination unit 340 includes:

the separate calculation subunit 341 is configured to calculate a difference between the first high-pressure parameter value and the second high-pressure parameter value to obtain a first difference, or calculate a difference between the first exhaust temperature value and the second exhaust temperature value to obtain a first difference;

the individual determination subunit 342 is configured to determine that dirty blockage exists in the nozzle when the first difference is smaller than a first preset dirty blockage threshold;

the individual determination subunit 342 is further configured to determine that the nozzle is not dirty when the first difference is greater than or equal to a first preset dirty threshold.

As an alternative embodiment, the prompting unit 350 is specifically configured to turn on an indicator light corresponding to the nozzle when the nozzle is clogged.

As an alternative embodiment, the comprehensive determination unit 370 includes:

the integrated operator unit 371 is configured to calculate a difference between the first high pressure parameter value and the third high pressure parameter value to obtain a second difference, or calculate a difference between the first exhaust temperature value and the third exhaust temperature value to obtain a second difference;

a comprehensive determination subunit 372, configured to determine that a filth blockage identification result is a filth blockage occurrence when the second difference is smaller than a second preset filth blockage threshold;

and the comprehensive determining subunit 372 is configured to determine that the dirty block identification result is that dirty block does not occur when the second difference is greater than or equal to a second preset dirty block threshold.

As an optional implementation manner, the control unit 310 is further configured to control the spraying device to stop operating, output the fault prompt information, and exit from the dirty block identification mode when the dirty block identification result indicates that the dirty block occurs;

the control unit 310 is further configured to quit the filth blockage recognition and enable the air conditioning unit to operate normally when the filth blockage recognition result indicates that filth blockage does not occur.

As an optional implementation manner, the control unit 310 is specifically configured to control the spraying device to stop operating, control the buzzer 408 to output a spraying failure prompt tone, and exit from the filth blockage identification mode when the filth blockage identification result indicates that filth blockage occurs; and outputting fault prompt information.

In the embodiment, the stable operation time is 0-3 min.

In the embodiment, after the air conditioning unit stably runs, the method records an initial high-pressure parameter value Pd1 of the air conditioning unit; while an initial exhaust temperature value Th1 may instead be recorded.

In this embodiment, the high pressure Pd of the air conditioning unit may be detected by a high pressure sensor 502 of the air conditioning unit; the exhaust temperature Th may be detected by an exhaust bulb 503 of the air conditioning unit.

In this embodiment, the method may open the first solenoid valve 402 and simultaneously close the second solenoid valve 403 to avoid spraying by the second nozzle 405 through the control module shown in fig. 5 and 6. At this time, the first nozzle 404 sprays the unit condenser 501, after a certain time t2 (t 2 is not less than 1min and not more than 3min) is sprayed, the air conditioning unit records the high pressure Pd2, performs filth blockage judgment, judges whether the pressure difference satisfies that delta P is Pd1-Pd2 is not less than Ps1(0.03Mpa is not less than Ps1 is not less than 0.06Mpa) (determined according to the sensor precision and the experimental data), and transmits a signal to a control module of the spraying device for control after the detection and judgment of the air conditioning unit.

In the embodiment, the pressure difference that Δ P is pd1-pd2 is greater than or equal to Ps1(0.03Mpa is less than or equal to Ps1 is less than or equal to 0.06Mpa) means that the dirty blocking condition does not exist, otherwise, the dirty blocking condition exists.

In the embodiment, the first electromagnetic valve 402 is opened and the second electromagnetic valve 403 is closed through the control module to prevent the second nozzle 405 from spraying, the unit condenser 501 is sprayed through the first nozzle 404, after spraying for a certain time t2 (t 2 is not less than 1min and not more than 3min), the air conditioning unit records the exhaust temperature Th2 at this time, dirty blockage judgment is performed, whether the temperature difference satisfies that the delta Th is Th1-Th2 is not less than Ts1 (Ts 1 is not less than 0.5 ℃ and not more than 1.5 ℃) (determined according to sensor precision and experimental data) is judged, and after detection and judgment of the air conditioning unit, a signal is transmitted to the control module of the spraying device to control.

In the embodiment, the temperature difference satisfying that Δ Th is Th1-Th2 is more than or equal to Ts1(0.5 ℃ to Ts1 to 1.5 ℃) means that no dirty blocking exists, otherwise, the temperature difference indicates that the dirty blocking exists.

In this embodiment, each judgment is one by one. Therefore, after the judgment is finished, the method can close the electromagnetic valve and open the next electromagnetic valve, and the judgment is carried out on each nozzle by controlling one by one until all the electromagnetic valves are judged one by one.

In this embodiment, the device can turn on the water pump 401, turn off the second electromagnetic valve 403, avoid the second nozzle 405 from spraying, and turn on the first electromagnetic valve 402 at the same time to flush the first nozzle 404 for t3 (t 3 is not less than 10s and not more than 20 s). After the washing is finished, the electromagnetic valve is closed, the next washing is carried out, and after all the washing is finished one by one, the comprehensive judgment stage is entered.

In the embodiment, if the condition is met, the nozzle filth blockage judgment is quitted, all the indicating lamps are turned off, and the spraying device and the unit operate under normal control; if not, the spraying device reports a fault, the spraying control module controls the buzzer 408 to be started, the machine type buzzes for warning, then the spraying device stops spraying, and the air conditioning unit operates according to normal control (another warning prompt, the fault warning can be realized by a method that an internal machine line controller displays a fault code, and the machine type is prompted).

It can be seen that, by implementing the nozzle filth blockage identification device described in this embodiment, the air conditioning unit can be preferentially started, so that the air conditioning unit can perform nozzle filth blockage identification when stably running; at the moment, the high-pressure parameter or the exhaust temperature of the air conditioning unit is recorded, so that the obtained parameter value is stable and reliable, and the subsequent identification and judgment of the dirty and blocked nozzles are facilitated; then, the method carries out spray control on each nozzle in turn and automatically records the high-pressure parameter or the exhaust temperature when each nozzle carries out spray, so that the method can confirm whether the nozzle is dirty or not by calculating the high-pressure parameter difference or the exhaust temperature difference, and further realizes real-time automatic nozzle dirty and blockage identification; after that, the method can output the nozzle filth blockage prompt information when determining that the filth blockage nozzle exists, so that the water pump can pressurize and flush the nozzle, thereby ensuring the cleanness of the nozzle and being beneficial to improving the use efficiency of the air conditioning unit; and then, the method can further comprehensively check all the nozzles without considering the dirty blockage condition obtained by the round inspection, so that the integral dirty blockage identification result is determined, and the identification accuracy of the dirty blockage of the nozzles is further ensured.

An embodiment of the present application provides an electronic device, including a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to make the electronic device execute the nozzle dirtiness identification method in embodiment 1 or embodiment 2 of the present application.

An embodiment of the present application provides a computer-readable storage medium, which stores computer program instructions, and when the computer program instructions are read and executed by a processor, the method for identifying nozzle dirtiness in embodiment 1 or embodiment 2 of the present application is performed.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A method of identifying a clogged nozzle, comprising:

2. A nozzle fouling identification method according to claim 1, characterized in that the method further comprises:

3. A nozzle fouling identification method according to claim 1, characterized in that the method further comprises:

if all the nozzles are not dirty and blocked, controlling all the nozzles to be opened, and recording a third high-pressure parameter value or a third exhaust temperature value of the air conditioning unit when all the nozzles are opened;

4. The nozzle clogging recognition method according to claim 1, wherein after the outputting of the clogging notification information matching the nozzle, the method further comprises:

5. The nozzle filth blockage identification method according to claim 1, wherein the controlling of the air conditioning unit to start and enter a filth blockage identification mode after the air conditioning unit stably operates comprises:

controlling the starting of the air conditioning unit;

6. The method for identifying nozzle fouling according to claim 1, wherein the determining whether a nozzle is fouled based on the second high pressure parameter value or the second exhaust temperature value and the first high pressure parameter value or the first exhaust temperature value comprises:

7. The nozzle clogging recognition method according to claim 1, wherein the outputting the clogging notification information matched to the nozzle includes:

and turning on an indicator light corresponding to the nozzle.

8. A nozzle fouling identification method according to any of claims 3 or 4, wherein said determining a fouling identification result from said third high pressure parameter value or said third exhaust temperature value and said first high pressure parameter value or said first exhaust temperature value comprises:

9. A nozzle fouling identification method according to claim 8, characterized in that the method comprises:

10. The method for identifying nozzle clogging according to claim 9, wherein the outputting of the failure indication information includes:

and controlling the buzzer to output a spraying fault prompt tone.

11. A nozzle filth recognition device, characterized by comprising:

12. An electronic device, characterized in that the electronic device comprises a memory for storing a computer program and a processor for executing the computer program to cause the electronic device to perform the nozzle dirtying identification method according to any one of claims 1 to 10.

13. A readable storage medium having stored thereon computer program instructions which, when read and executed by a processor, perform a nozzle fouling identification method according to any one of claims 1 to 10.