Hybrid lockout method for a compressor

Abstract

The present application relates to the field of air conditioner control, in order to take into account the repair cost and user safety, provide the mixed locking method of compressor, comprising: risk detection, when detecting the risk, judge the type of this risk: if it is the first high risk class, judge whether the soft reset number of this risk is greater than the first threshold value, if yes, enter the full locking mode; if not, adopt the soft locking shutdown process; if it is the second high risk class, judge whether the total number of hard locking reset of all second high risks is greater than the second threshold value, if yes, enter the full locking mode; if not, judge whether the hard locking reset number of this second high risk is greater than the third threshold value, if not, adopt the hard locking shutdown process; if yes, judge whether the soft reset number of this second high risk is greater than the fourth threshold value, if yes, enter the full locking mode; if not, adopt the soft locking shutdown process. The above-mentioned mode can take into account the repair cost and user safety.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control, specifically a hybrid lock-up method for a compressor. Background Technology

[0002] In air conditioning (refrigeration system), low to medium risk generally refers to sensor failure or overload protection. The protection method is to directly remind the user through feedback control or fault code, and generally does not involve shutting down or locking.

[0003] However, current refrigeration systems often trigger some high-risk faults during use / maintenance, such as risk of combustion and explosion, risk of electric leakage, risk of refrigerant blockage, and risk of water leakage. These risks are different from those of medium and low risks, and their protection methods cannot be the same as those of medium and low risks. Otherwise, once triggered, they will cause serious harm to life and property.

[0004] While existing technologies provide corresponding protection modes for these high-risk situations, such as uniform hard shutdown or soft shutdown (i.e., shutting down the system directly by cutting off power via a hardware switch or controlling shutdown via a software switch upon detecting a high risk), this approach fails to consider the different natures of high risks and cannot provide targeted safety protection controls for different types of high risks. Consequently, it cannot achieve a good balance between maintenance efficiency and user comfort. Summary of the Invention

[0005] To balance maintenance costs and user safety, this application provides a hybrid lock-up method for compressors.

[0006] The technical solution adopted by the present invention to solve the above problems is:

[0007] The compressor's hybrid lock-up method includes:

[0008] Risk detection: When a risk is detected, the type of risk is determined: if it is the highest risk category, it is determined whether the number of soft resets for this risk exceeds the first threshold. If so, the system enters full lockout mode; otherwise, the soft lockout shutdown procedure is adopted.

[0009] If it is the second highest risk category, then determine whether the total number of hard lockout resets for all second highest risk categories is greater than the second threshold.

[0010] If so, then enter full lockout mode;

[0011] If not, then determine whether the number of hard lockout resets for the second highest risk exceeds the third threshold.

[0012] If not, then a hard-lock shut-off procedure shall be adopted;

[0013] If so, then determine whether the number of soft resets with the second highest risk exceeds the fourth threshold.

[0014] If so, then enter full lockout mode;

[0015] If not, then the soft-lock shut-off procedure shall be adopted;

[0016] The hard-lock shutdown process is as follows: the risk device is powered off via hardware control; the system enters the first alarm mode; maintenance personnel inspect the faulty part, and after the inspection is completed, the system is manually reset, the fault code is automatically cleared and restarted, and the hard-lock reset count is incremented by one.

[0017] The soft-lock shut-off process is as follows: the risk device is powered off via software control; the system enters the second alarm mode; after the maintenance personnel verify their identity, they inspect the faulty part; after the inspection is completed, the fault code is manually cleared; after manual reset, the system restarts, and the soft reset count is incremented by one.

[0018] The fully locked mode is as follows: after the system is powered on, it does not accept any control commands and enters the third alarm mode; maintenance personnel perform maintenance after identity verification; after manual reset, the system restarts, and the number of soft resets and hard lockout resets are both cleared to zero.

[0019] Furthermore, the first alarm mode is: displaying a risk fault code and sounding a first alarm; the second alarm mode is: displaying a risk fault code and sounding a second alarm; the third alarm mode is: displaying a risk fault code and sounding a third alarm.

[0020] Furthermore, the frequency of the first alarm is less than the frequency of the second alarm, which is less than the frequency of the third alarm.

[0021] Furthermore, the first high-risk category includes: risk of fire and explosion and risk of electric shock; the second high-risk category includes: risk of refrigerant failure and risk of water leakage.

[0022] Furthermore, the authentication method in the fully locked mode is: inputting a maintenance code.

[0023] The advantages of this invention compared to the prior art are: by classifying risks, different maintenance methods are adopted for different risks, and different maintenance methods can be carried out by maintenance personnel with different levels of expertise, so as to balance maintenance costs and user safety. Attached Figure Description

[0024] Figure 1 This is a flowchart of the compressor's hybrid lock-up method. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Based on the degree of risk impact, high risks can be divided into two categories: the highest risk category and the second highest risk category. The highest risk category primarily refers to risks with extremely serious consequences, potentially causing severe loss of life, such as explosion and electric shock risks. Explosion risks typically occur during refrigerant recovery operations when damaged copper pipes allow air to be drawn in, mixing with flammable refrigerant and reaching explosive conditions. Electric shock risks are usually caused by damage or aging of internal electrical or insulation components, leading to leakage. The second highest risk category primarily refers to risks that often result in property damage but have a lower probability of causing life-threatening situations; these risks may even allow users to repeatedly restart the equipment within a certain range to verify the repair results. Examples include refrigerant failure risks (not refrigerant leaks) and water leakage risks. Refrigerant failure risks are typically caused by insufficient refrigerant charge, leading to the compressor operating above its normal set temperature due to refrigerant deficiency, eventually causing the motor to burn out. Water leakage risks are usually caused by damage to drainage components or the electrical control box, allowing condensate to enter the control box or other parts of the casing, causing contamination or damage to electrical equipment.

[0027] Based on this, such as Figure 1 As shown, this application proposes a hybrid latch-up method for a compressor, comprising:

[0028] Risk detection: When a risk is detected, the type of risk is determined: if it is the highest risk category, it is determined whether the number of soft resets for this risk exceeds the first threshold. If so, the system enters full lockout mode; otherwise, the soft lockout shutdown procedure is adopted.

[0029] If it is the second highest risk category, then determine whether the total number of hard lockout resets for all second highest risk categories is greater than the second threshold.

[0030] If so, then enter full lockout mode;

[0031] If not, then determine whether the number of hard lockout resets for the second highest risk exceeds the third threshold.

[0032] If not, then a hard-lock shut-off procedure shall be adopted;

[0033] If so, then determine whether the number of soft resets with the second highest risk exceeds the fourth threshold.

[0034] If so, then enter full lockout mode;

[0035] If not, then the soft-lock shut-off procedure shall be adopted;

[0036] The hard-lock shutdown process is as follows: the risk device is powered off via hardware control; the system enters the first alarm mode; maintenance personnel inspect the faulty part, and after the inspection is completed, the system is manually reset, the fault code is automatically cleared and restarted, and the hard-lock reset count is incremented by one.

[0037] The soft-lock shut-off process is as follows: the risk device is powered off via software control; the system enters the second alarm mode; after the maintenance personnel verify their identity, they inspect the faulty part; after the inspection is completed, the fault code is manually cleared; after manual reset, the system restarts, and the soft reset count is incremented by one.

[0038] The fully locked mode is as follows: after the system is powered on, it does not accept any control commands and enters the third alarm mode; maintenance personnel perform maintenance after identity verification; after manual reset, the system restarts, and the number of soft resets and hard lockout resets are both cleared to zero.

[0039] The first alarm mode is: displaying a risk fault code and sounding a first alarm; the second alarm mode is: displaying a risk fault code and sounding a second alarm; the third alarm mode is: displaying a risk fault code and sounding a third alarm, wherein the frequency of the first alarm is less than the frequency of the second alarm and the frequency of the third alarm.

[0040] Hard locking is used to handle low-risk situations. Its reset method allows users to manually move the hardware switch to reset. Due to the low risk level, ordinary users can perform maintenance to achieve rapid system recovery. Soft locking corresponds to a higher risk level. At this time, it requires personnel with certain professional knowledge to perform maintenance and reset. Maintenance personnel can be authenticated through an APP or mini-program. Only after successful authentication can fault codes be cleared. Alternatively, specific maintenance tools can be used to clear fault codes. Full locking corresponds to the highest risk level. At this time, it is necessary for the manufacturer to send professional personnel for maintenance to ensure safety. In this embodiment, maintenance codes are used to verify professional personnel.

[0041] Maintenance principle:

[0042] The first high-risk category is relatively dangerous, so all of them use the soft-locking reset mode. By setting a threshold I, if the number of resets is greater than I, it means that the problem has not been really investigated and further inspection and handling by the manufacturer's personnel are required; if it is less than I, it means that it is within the safe reset range and can be processed normally in the soft-locking process.

[0043] The second highest risk category first requires determining whether "other second highest risks exist in the system". If other second highest risks exist, the system is considered to have multiple second highest risks, and the overall risk level is still too high, requiring direct entry into full lockout mode. If no other second highest risks exist, the system is considered to have only one second highest risk, which is low, and full lockout mode is not required, but further judgment is needed: by setting threshold III, the system determines whether the number of hard lockout resets for the current second highest risk has exceeded the limit. If it has exceeded the limit, the risk level is considered moderate, requiring further judgment: by setting threshold IV, the system determines whether the number of soft resets has exceeded the limit. If it has not exceeded the limit, the system directly enters soft lockout reset mode; if it has exceeded the limit, the system directly enters full lockout mode.

[0044] The fully locked mode can only be operated by professionals.

[0045] This application classifies risks and uses different maintenance methods for different risks. Different maintenance methods are carried out by maintenance personnel with different levels of expertise, so as to balance maintenance costs and user safety.

Claims

1. A method for locking up a compressor, characterized in that, include: Risk detection: When a risk is detected, the type of risk is determined: If it is the highest risk category, it is determined whether the number of soft resets for this risk exceeds the first threshold. If so, the system enters full lockout mode; otherwise, the soft lockout shutdown procedure is adopted. If it is the second highest risk category, then determine whether the total number of hard lockout resets for all second highest risk categories is greater than the second threshold. If so, then enter full lockout mode; If not, then determine whether the number of hard lockout resets for the second highest risk exceeds the third threshold. If not, then a hard-lock shut-off procedure shall be adopted; If so, then determine whether the number of soft resets with the second highest risk exceeds the fourth threshold. If so, then enter full lockout mode; If not, then the soft-lock shut-off procedure shall be adopted; The hard-lock shutdown process is as follows: the risk device is powered off via hardware control; the system enters the first alarm mode; maintenance personnel inspect the faulty part, and after the inspection is completed, the system is manually reset, the fault code is automatically cleared and restarted, and the hard-lock reset count is incremented by one. The soft-lock shut-off process is as follows: the risk device is powered off via software control; the system enters the second alarm mode; after the maintenance personnel verify their identity, they inspect the faulty part; after the inspection is completed, the fault code is manually cleared; after manual reset, the system restarts, and the soft reset count is incremented by one. The fully locked mode is as follows: after the system is powered on, it does not accept any control commands and enters the third alarm mode; maintenance personnel can perform maintenance after identity verification. After a manual reset, the system restarts, and the number of soft resets and hard lockout resets are both reset to zero. The first high-risk category includes: risk of fire and explosion and risk of electric shock; the second high-risk category includes: risk of refrigerant failure and risk of water leakage.

2. The compressor hybrid lock-up method according to claim 1, characterized in that, The first alarm mode is: displaying a risk fault code and sounding a first alarm; the second alarm mode is: displaying a risk fault code and sounding a second alarm; the third alarm mode is: displaying a risk fault code and sounding a third alarm.

3. The compressor hybrid lock-up method according to claim 2, characterized in that, The frequency of the first alarm is less than the frequency of the second alarm, which is less than the frequency of the third alarm.

4. The method for mixing and locking the compressor according to any one of claims 1-3, characterized in that, The authentication method for the fully locked mode is: inputting a maintenance code.

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