WO2018113323A1

WO2018113323A1 - Method and system for automatically and rapidly starting up unit after de-energization, and air conditioner

Info

Publication number: WO2018113323A1
Application number: PCT/CN2017/097699
Authority: WO
Inventors: 王永; 李镇杉; 梁涛
Original assignee: 重庆美的通用制冷设备有限公司
Priority date: 2016-12-22
Filing date: 2017-08-16
Publication date: 2018-06-28
Also published as: CN106594994A; CN106594994B

Abstract

Disclosed is a method for automatically and rapidly starting up a unit after de-energization. The method comprises detecting an operating state of a unit, and recording, when the unit is de-energized, operating parameters of the unit at the moment of de-energization; when the unit is energized, eliminating a de-energization fault, and entering a rapid startup stage; and when real-time working parameters of the unit reach the operating parameters at the moment of de-energization, ending the rapid startup stage and entering a normal operating state. Further disclosed is a system for automatically and rapidly starting up a unit after de-energization, and an air conditioner.

Description

Automatic quick start method, system and air conditioner for power failure of unit

Technical field

The invention relates to the technical field of electrical automation control, in particular to a method, a system and an air conditioner for automatically starting a power failure of a unit.

Background technique

At present, the centrifugal unit does not have a quick start function. If it is necessary to quickly start the centrifugal unit, when a power failure occurs, a manual operation is required to modify the unit parameters and eliminate the fault, thereby achieving the purpose of restarting the unit. The disadvantage is that the unit cannot realize automatic operation. Startup, and manual operation is required when the power is turned off. In particular, after the power failure, the operating parameters of the unit are lost. It is necessary for the operator to reset the new operating parameters according to the instantaneous load of the unit. On the one hand, it is troublesome. On the other hand, the newly set working parameters may not match the current working load of the unit. Happening.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and system for automatic quick start of power failure of the unit in view of the above-mentioned deficiencies of the prior art.

The technical solution of the present invention to solve the above technical problems is as follows:

According to an aspect of the present invention, a method for automatically starting a power failure of a unit is provided, which includes the following steps:

Step 1: Detect the operating status of the unit, and record the operating parameters of the unit at the moment of power failure when the unit is powered off;

Step 2: When the unit is powered on, eliminate the power failure and enter the fast start phase;

Step 3: When the real-time working parameters of the unit reach the operating parameters at the moment of power failure, the fast start phase is terminated and the normal running state is entered.

The automatic quick start method for power failure of the unit of the invention increases the automatic quick start function after the power is cut off, and automatically enters the fast start phase when the power failure time after power-on and the power-on temperature of the unit meet the preset start condition. The unit can re-establish the working parameters at the moment of power failure, shorten the time for the unit to be powered off and restart, and ensure that the unit load does not fluctuate.

Based on the above technical solutions, the present invention can also be improved as follows:

Further, the specific realization of determining whether the unit is in the power-off state in the step 1 is: when the unit is stopped, detecting the voltage at the incoming end of the unit, if the voltage at the incoming end of the unit is zero, the unit is in a power-off state, otherwise the unit is in Non-power-off state.

The beneficial effect of the above further solution is that it is convenient and accurate to judge whether the unit is in the power-off state or the non-power-off state by detecting the voltage at the line end of the unit, which is convenient for the unit to be quickly restarted when the unit is in the power-off state.

Further: when the unit is powered on, the preset judgment parameter is also obtained, and the unit is controlled to enter the quick start stage when the preset judgment parameter meets the preset start condition.

The beneficial effect of the above further solution is that the preset control condition can be used to selectively control the power-on of the unit after the power is cut off, and the control unit enters only when the preset determination parameter meets the preset start condition. In the quick start phase, it is convenient to control the automatic quick start of the power-on after the power is cut off, to avoid starting without the need of quick start or improper start, which has adverse consequences.

Further, in the step 2, the preset determination parameter is a power-off time between a power-off instant of the unit and a power-on time, and a unit temperature at the time of power-on.

Further, in the step 2, the preset condition includes a first preset start condition, and the first preset start condition is: the power off time is less than or equal to a preset start time threshold, and is powered on. The unit temperature is less than or equal to the preset start temperature threshold.

The beneficial effects of the above further solution are: the above-mentioned manner can be used to personally set the starting condition after the unit is powered off, especially for short-time power switching, and can be quickly restarted without manual operation. Start the unit and keep the working parameters at the moment of power failure, so that the unit can quickly reach the working state before power failure, shorten the starting time, and minimize the impact of power failure on the normal operation of the unit.

Further, in the step 2, the preset condition further includes a second preset start condition, and the second preset start condition is: the power off time is greater than or equal to the idle time of the unit.

The beneficial effects of the above further solution are as follows: after the power failure of the unit can be controlled by the above manner, after the idle time of the unit ends, that is, after the unit completely stops working, the unit can be restarted again quickly, which can improve the start and stop moment of the unit. Safety, reduce the mechanical damage of the unit and extend the practical life of the unit.

According to another aspect of the present invention, an automatic quick start system for a power failure of a unit is provided, including a power failure identification module and a main control module; the power failure identification module is configured to detect a unit operating state of the unit; the main control module It is used to record the operating parameters of the unit when the unit is powered off; it is also used to eliminate the power failure when the unit is powered on, and enter the fast start phase; when the real-time operating parameters of the unit reach the operating parameters of the moment of power failure, End the quick start phase and enter normal operation.

The utility model relates to a unit power-off automatic quick start system, which can effectively identify the on-off state of the unit through the power-off identification module, and eliminate the power-off fault when the unit is powered on again after the power is cut off, and is broken. When the electric time and the unit's power-on temperature meet the preset starting conditions, it automatically enters the quick-start phase, so that the unit can reach the working parameters at the moment of power-off, shortening the time when the unit is powered off and restarted, and ensuring that the unit load does not fluctuate.

Further, the power failure recognition module includes a shutdown detection unit and a power failure detection unit. The shutdown detecting unit is configured to determine whether the unit is stopped; the power failure detecting unit is disposed at the incoming end of the unit, and is configured to detect the voltage of the incoming end of the unit when the unit is stopped, and if the voltage at the incoming end of the unit is zero, the unit is at Power off state, otherwise the unit is in a non-power-off state.

The above-mentioned further solution has the beneficial effects of: judging whether the unit is stopped by the shutdown detecting unit, and determining whether the unit is in the power-off state by the power-off detecting unit when the unit is stopped. State, because the unit is definitely in the power-on state during normal operation, this can eliminate the situation when the unit is in normal working condition, and only judge the shutdown condition of the unit further, so as to realize the rapid restart of the control unit in the subsequent power-off state.

Further, when the unit is powered on, the main control module also acquires a preset judgment parameter, and controls the unit to enter a quick start stage when the preset judgment parameter meets the preset start condition.

Further, the preset determination parameter is a power-off time between a power-off moment of the unit and a power-on time, and a unit temperature at the time of power-on.

Further, the preset condition includes a first preset start condition, and the first preset start condition condition is: the power off time is less than or equal to a preset start time threshold, and the unit temperature at power-on is less than or equal to The preset start temperature threshold.

The beneficial effects of the above further solution are: the above-mentioned manner can be used to personally set the starting condition after the unit is powered off, especially for short-time power switching, and the unit can be quickly restarted without manual operation, and the moment of power-off is retained. The working parameters are convenient for the unit to quickly reach the working state before power failure, shorten the starting time, and minimize the impact of power failure on the normal operation of the unit. And when the power-off time is greater than the preset start-up time threshold, or the unit temperature at the time of power-on is greater than the preset start-up temperature threshold, no processing is performed to keep the unit in a stagnant state, and the operator is required to manually start the unit. More in line with the actual operating procedures.

Further, the preset condition further includes a second preset start condition, and the second preset start condition is: the power off time is greater than or equal to the idle time of the unit.

The beneficial effect of the above further solution is that the power failure time is further determined by the main control module Whether it is greater than the idle time of the unit can control the unit after the power is cut off, after the unit's idle time ends, that is, after the unit completely stops working, then restart the unit again, which can improve the safety of the unit when starting and stopping. Mechanical damage of small units, extending the useful life of the unit.

The invention also provides an air conditioner, which adopts the automatic power-off system of the unit power-off.

In addition, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by the processor, implements the above-described automatic power-off method for power-off of the unit.

DRAWINGS

1 is a schematic flow chart of a method for automatically starting a power failure of a unit according to the present invention;

2 is a schematic structural view of an automatic quick start system for power failure of a unit according to the present invention.

detailed description

The principles and features of the present invention are described in the following with reference to the accompanying drawings.

Embodiment 1 A method for automatically starting a power failure of a unit. In the following, a method for automatically starting and powering off the unit of the present embodiment will be described in detail with reference to FIG.

As shown in FIG. 1 , a method for automatically starting a power failure of a unit includes the following steps:

In this embodiment, the specific implementation of determining whether the unit is in the power-off state in the step 1 is: when the unit is stopped, detecting the voltage at the incoming end of the unit, and if the voltage at the incoming end of the unit is zero, the unit is in a power-off state. Otherwise the unit is in a non-power-off state. By comparing the voltage at the incoming end of the unit, you can compare It is convenient and accurate to judge whether the unit is in the power-off state or in the non-power-off state, which is convenient for the unit to be restarted quickly when the unit is in the power-off state.

It should be pointed out here that only when the unit is shut down, the voltage at the incoming end of the unit is detected, and it is judged whether the unit is in a power-off state. In this way, the situation of the unit during normal operation can be excluded, and only the shutdown condition of the unit can be further judged, so that the control unit can be quickly restarted in the power-off state.

Of course, in practice, the speed of the unit can also be detected by sensors and other devices to determine whether the unit is in a shutdown state. Specifically, when the speed of the unit is zero, it indicates that the unit is in the stop state, otherwise the unit is in the running state.

When the unit is powered on, the preset judgment parameter is also obtained, and the unit is controlled to enter the quick start stage when the preset judgment parameter meets the preset start condition. By setting the preset starting condition, the unit can be selectively controlled to be powered on after the power is cut off, and the control unit enters the quick start phase only when the preset determining parameter meets the preset starting condition, which is convenient for the unit. After power-off, the power-on is automatically and quickly started to control, so as to avoid starting without a quick start or improper start, which has adverse consequences.

The preset determination parameter is a power-off time between a power-off moment of the unit and a power-on time, and a unit temperature at the time of power-on. Of course, the preset judgment parameters described herein may also select other parameters such as the working sub-cyan of the unit as the preset judgment parameters, or select two or more unit parameters (such as temperature, power-off time and working pressure) as a preset judgment. The parameters are used as a basis for quick start of the control unit.

In this embodiment, in the step 2, the preset condition includes a first preset start condition, and the first preset start condition is: the power off time is less than or equal to a preset start time threshold, and The unit temperature at power-on is less than or equal to the preset start temperature threshold. Through the above-mentioned methods, the starting conditions after the unit is powered off can be personalized, especially for short-time power switching, and the unit can be quickly restarted without manual operation, and the operating parameters of the moment of power-off are retained, so that the unit can be quickly reached. The working state before power failure, shorten the starting time, and minimize the impact of power failure on the normal operation of the unit.

Preferably, the preset startup time threshold ranges from 1-5 min, and the preset startup temperature threshold is It is 0-60 degrees.

Preferably, the preset condition further includes a second preset start condition, and the second preset start condition is: the power off time is greater than or equal to the idle time of the unit. After the power failure of the unit can be controlled by the above method, after the idle time of the unit ends, that is, after the unit completely stops working, the unit can be restarted again quickly, which can improve the safety of the unit when starting and stopping, and reduce the mechanical mechanism of the unit. Damage, extending the useful life of the unit.

Embodiment 2: An automatic quick start system for power failure of a unit. A unit power-off automatic quick start system of the present embodiment will be described in detail below with reference to FIG.

As shown in FIG. 2, an automatic power-off system for power-off of a unit includes a power-off identification module and a main control module. The power failure identification module is configured to detect a unit operating state of the unit; the main control module is configured to record an operating parameter of the unit when the unit is powered off, and is also used to eliminate the power failure when the unit is powered on, and Enter the fast start phase; when the real-time working parameters of the unit reach the operating parameters at the moment of power failure, the fast start phase is terminated and the normal running state is entered.

In this embodiment, the power failure identification module includes a shutdown detection unit and a power failure detection unit; the shutdown detection unit is configured to determine whether the unit is down; the power failure detection unit is disposed at the line end of the unit, and is used in the unit When the machine is stopped, the voltage at the incoming end of the unit is detected. If the voltage at the incoming end of the unit is zero, the unit is in a power-off state, otherwise the unit is in a non-power-off state. Predetermining whether the unit is stopped by the shutdown detecting unit, and determining whether the unit is in a power-off state by the power-off detecting unit when the unit is stopped, because the unit is in a power-on state during normal operation, the unit can be excluded. In the case of work, only the shutdown condition of the unit is further judged, so that the control unit can be quickly restarted in the power-off state.

When the unit is powered on, the main control module also acquires a preset determination parameter, and controls the unit to enter a quick start phase when the preset determination parameter meets the preset start condition.

The preset determination parameter is a power-off time between a power-off moment of the unit and a power-on time, and a unit temperature at the time of power-on.

In this embodiment, the preset condition includes a first preset start condition, and the first preset start condition is: the power off time is less than or equal to a preset start time threshold, and the unit temperature at power-on Less than or equal to the preset start temperature threshold. Through the above-mentioned methods, the starting conditions after the unit is powered off can be personalized, especially for short-time power switching, and the unit can be quickly restarted without manual operation, and the operating parameters of the moment of power-off are retained, so that the unit can be quickly reached. The working state before power failure, shorten the starting time, and minimize the impact of power failure on the normal operation of the unit. And when the power-off time is greater than the preset start-up time threshold, or the unit temperature at the time of power-on is greater than the preset start-up temperature threshold, no processing is performed to keep the unit in a stagnant state, and the operator is required to manually start the unit. More in line with the actual operating procedures.

Preferably, the preset startup time threshold ranges from 1 to 5 minutes, and the preset startup temperature threshold is 0 to 60 degrees.

Preferably, the preset condition further includes a second preset start condition, and the second preset start condition is: the power off time is greater than or equal to the idle time of the unit. After the main control module further determines whether the power-off time is greater than the idle time of the unit, the unit can be controlled to be powered off, and after the idle time of the unit ends, that is, after the unit completely stops working, the unit is restarted quickly. It can improve the safety of the unit at the moment of starting and stopping, reduce the mechanical damage of the unit and prolong the practical life of the unit.

It should be pointed out that when the power-off time is less than or equal to the idle time of the unit, the unit needs to be shut down for a period of time, and the idle time of the standby group ends before entering the fast start stage.

The utility model relates to a unit power-off automatic quick start system, which can effectively identify the on-off state of the unit through the power-off identification module, and eliminate the power-off fault when the unit is powered on again after the power is cut off, and is broken. When the electric time and the unit power-on temperature meet the preset starting conditions, the automatic start-up phase is automatically entered, so that The unit regains the working parameters at the moment of power failure, shortens the time when the unit is powered off and restarts, and ensures that the unit load does not fluctuate.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logic function or process. And the scope of the preferred embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an opposite order depending on the functions involved, in the order shown or discussed. It will be understood by those skilled in the art to which the embodiments of the present invention pertain.

The logic and/or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer readable medium, Used in conjunction with, or in conjunction with, an instruction execution system, apparatus, or device (eg, a computer-based system, a system including a processor, or other system that can fetch instructions and execute instructions from an instruction execution system, apparatus, or device) Or use with equipment. For the purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM). In addition, the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.

It should be understood that portions of the invention may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware and in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.

One of ordinary skill in the art can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, includes one of the steps of the method embodiment or a group thereof Hehe.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.

The above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like. Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Out, Clockwise, Counterclockwise, Axial The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or The elements must have a particular orientation, are constructed and operated in a particular orientation and are therefore not to be construed as limiting.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

An automatic quick start method for power failure of a unit, characterized in that the method comprises the following steps:

Step 1: Detect the operating status of the unit, and record the operating parameters of the unit at the moment of power failure when the unit is powered off;

Step 2: When the unit is powered on, eliminate the power failure and enter the fast start phase;

Step 3: When the real-time working parameters of the unit reach the operating parameters at the moment of power failure, the fast start phase is terminated and the normal running state is entered.
The automatic quick start method for power failure of a unit according to claim 1, wherein the specific realization of determining whether the unit is in a power-off state in the step 1 is: when the unit is stopped, detecting the voltage at the incoming end of the unit, if the unit If the voltage at the incoming end is zero, the unit is in a power-off state, otherwise the unit is in a non-power-off state.
The automatic quick start method for power failure of a unit according to claim 1 or 2, wherein when the unit is powered on, the preset judgment parameter is also obtained, and the unit is controlled to enter quickly when the preset judgment parameter meets the preset start condition. Start-up phase.
The automatic quick start method for power failure of a unit according to claim 3, wherein the preset determination parameter is a power-off time between a power-off instant of the unit and a power-on time, and a unit temperature at the time of power-on.
The method for automatically starting a power-off of a unit according to claim 4, wherein in the step 2, the preset condition comprises a first preset start condition, and the first preset start condition is: The power-off time is less than or equal to the preset startup time threshold, and the unit temperature at power-on is less than or equal to the preset startup temperature threshold.
The automatic quick start method for power failure of a unit according to claim 5, characterized in that In the step 2, the preset condition further includes a second preset start condition, and the second preset start condition is: the power off time is greater than or equal to the idle time of the unit.
An automatic quick start system for power failure of a unit, characterized in that it comprises a power failure identification module and a main control module;

The power failure identification module is configured to detect a unit operating state of the unit;

The main control module is used to record the operating parameters of the unit when the unit is powered off; it is also used to eliminate the power failure when the unit is powered on, and enter the fast start phase; when the real-time operating parameters of the unit reach the moment of power failure When the parameters are run, the quick start phase is ended and the normal operation state is entered.
The power-off automatic quick-start system of the unit according to claim 7, wherein the power-off identification module comprises a shutdown detection unit and a power-off detection unit;

The shutdown detecting unit is configured to determine whether the unit is stopped;

The power failure detecting unit is disposed at the incoming end of the unit for detecting the voltage at the incoming end of the unit when the unit is stopped. If the voltage at the incoming end of the unit is zero, the unit is in a power-off state, otherwise the unit is in a non-power-off state.
The automatic power-off system for power-off of a unit according to claim 8, wherein the main control module further acquires a preset determination parameter when the unit is powered on, and controls when the preset determination parameter meets the preset activation condition. The unit enters the fast start phase.
The automatic power-off system for power-off of a unit according to claim 9, wherein the preset determination parameter is a power-off time between a power-off instant of the unit and a power-on time, and a unit temperature at the time of power-on.
The unit power-off automatic quick start system according to claim 10, wherein the preset condition comprises a first preset start condition, and the first preset start condition is: the power-off time is less than or Is equal to the preset start time threshold, and the unit temperature at power-on is less than or equal to the preset start Dynamic temperature threshold.
The automatic power-off system of the unit power-off according to claim 11, wherein the preset condition further comprises a second preset start condition, and the second preset start condition is: the power-off time is greater than It is equal to the idle time of the unit.
An air conditioner, characterized in that it adopts the automatic power-off quick start system of the unit according to any one of claims 7-12.
A non-transitory computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor, and the automatic power-off method for powering off the unit according to any one of claims 1 to 6 .