CN115614915B - Control method and device for valve cut-off protection, air conditioning system and storage medium - Google Patents

Control method and device for valve cut-off protection, air conditioning system and storage medium Download PDF

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Publication number
CN115614915B
CN115614915B CN202211248928.2A CN202211248928A CN115614915B CN 115614915 B CN115614915 B CN 115614915B CN 202211248928 A CN202211248928 A CN 202211248928A CN 115614915 B CN115614915 B CN 115614915B
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temperature
indoor
range
preset
meets
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CN115614915A (en
Inventor
叶晋生
范建波
侯凯泽
于桥林
刘昭
彭永坚
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a control method, a device, an air conditioning system and a storage medium for valve cut-off protection, wherein the method comprises the steps of obtaining first operation information when an air conditioning host operates within a first preset time after being started; if each operation parameter record of the first operation information meets a first operation range, a first protection instruction is sent to the air conditioner host; acquiring second operation information of the air conditioner host operating in a second preset time after the air conditioner host is started for the second time, and if each operation parameter record of the second operation information meets a second operation range; and sending out a second protection instruction to the air conditioner host. Through multiple logic aspects, when the valve of the air conditioner host is judged to be abnormal, the valve enters a protection state and stops operating, so that the safe operation of the air conditioner is ensured, and the situation of misjudgment and fault does not occur.

Description

Control method and device for valve cut-off protection, air conditioning system and storage medium
Technical Field
The present invention relates to the field of intelligent control technologies, and in particular, to a control method and apparatus for valve cut-off protection, an air conditioning system, and a storage medium.
Background
The existing air conditioning system does not judge and control the situation that the big and small valves of the external machine are not opened, so that if the valve is blocked when the air conditioning system operates, the compressor is idle or the load is increased because the refrigerant cannot circulate normally, and the explosion of the compressor or the demagnetization caused by the overhigh temperature can be caused, so that the damage to air conditioning equipment and personal safety is caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the embodiment of the invention provides a control method and device for valve cut-off protection, an air conditioning system and a storage medium, and aims to solve the technical problem that the prior art does not judge and control the situation that the big valve and the small valve of an external machine are not opened.
The technical scheme adopted by the embodiment of the invention for solving the technical problems is as follows:
In a first aspect, an embodiment of the present invention provides a control method for valve cut-off protection, where the control method is applied to a controller of an air conditioning apparatus, the air conditioning apparatus further includes an air conditioning host, and the controller is in control connection with the air conditioning host, and the control method includes:
Acquiring first operation information of the air conditioner host which operates in a first preset time after the air conditioner host is started;
Judging whether each operation parameter record of the first operation information meets a preset first operation range or not;
If each operation parameter record of the first operation information meets the first operation range, a first protection instruction is sent to the air conditioner host computer to enter a first protection state;
acquiring second operation information of the air conditioner host which operates in a second preset time after the air conditioner host is started for the second time;
judging whether each operation parameter record of the second operation information meets a preset second operation range or not;
If each operation parameter record of the second operation information meets the second operation range; and sending out a second protection instruction to the air conditioner host to enter a second protection state.
In a second aspect, an embodiment of the present invention further provides a valve cut-off protection device, where the device is configured in a controller of an air conditioning apparatus, the air conditioning apparatus further includes an air conditioning host, and the controller is in control connection with the air conditioning host, and the device includes:
The first acquisition module is used for acquiring first operation information of the operation of the air conditioner host within a first preset time after the air conditioner host is started;
The first judging module is used for judging whether each operation parameter record of the first operation information meets a preset first operation range or not;
The first sending module is used for sending a first protection instruction to the air conditioner host to enter a first protection state if each operation parameter record of the first operation information meets the first operation range;
The second acquisition module is used for acquiring second operation information of the air conditioner host which operates in a second preset time after the air conditioner host is started for the second time;
the second judging module is used for judging whether each operation parameter record of the second operation information meets a preset second operation range or not;
the second sending module is used for sending the second operation information to the second sending module if each operation parameter record of the second operation information meets the second operation range; and sending out a second protection instruction to the air conditioner host to enter a second protection state.
In a third aspect, an embodiment of the present invention further provides an air conditioning system, where the air conditioning system includes a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
A memory for storing a computer program;
And the processor is used for realizing the steps of the control method for the valve cut-off protection provided in the first aspect when executing the program stored in the memory.
In a fourth aspect, embodiments of the present invention further provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the control method for valve cut-off protection provided in the first aspect.
Compared with the prior art, the invention has the beneficial effects that:
If each operation parameter record of the first operation information is judged to meet the first operation range, sending a first valve blocking protection instruction to the air conditioner host so as to enable the air conditioner host to enter a first protection state, and if each operation parameter record of the second operation information is judged to meet the second operation range; and sending a second valve blocking protection instruction to the air conditioner host so as to enable the air conditioner host to enter a second protection state, and judging that the valve of the air conditioner host is abnormal through various logics, so that the air conditioner host enters the protection state and stops operating, thereby ensuring the safe operation of air conditioner equipment and avoiding the situation of misjudgment and failure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a control method of valve cut-off protection in the present embodiment.
Fig. 2 is a flowchart illustrating a process of satisfying each operation parameter record of the first operation information in the present embodiment.
Fig. 3 is a schematic flow chart illustrating a sub-process in which each operation parameter record of the first operation information satisfies the first operation range according to the present embodiment.
Fig. 4 is a flowchart illustrating a process of satisfying the second operation range for each operation parameter record of the second operation information according to the present embodiment.
Fig. 5 is a block schematic diagram of an apparatus for valve shut-off protection according to an embodiment.
Fig. 6 is a block schematic diagram of an air conditioning system according to an embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In order to solve the technical problems that in the prior art, if the condition of valve blockage of an air conditioner host occurs, refrigerant cannot circulate normally, a compressor idles or has a large load, and the compressor is possibly exploded or demagnetized due to overhigh temperature, the embodiment of the invention provides a control method for valve cut-off protection. Referring to fig. 1, the control method is applied to a controller of an air conditioning apparatus, and the air conditioning apparatus further includes an air conditioning host, where the controller is in control connection with the air conditioning host. The controller is a component used for controlling each unit module in the air conditioning equipment, such as a control circuit board with an MCU chip in the air conditioning equipment, so as to control each unit module.
The following describes in detail the specific implementation procedure of the control method for valve cut-off protection provided by the embodiment of the invention. As shown in fig. 1, the method includes steps S110 to S170.
S110, acquiring first operation information when the air conditioner host is operated within a first preset time after the air conditioner host is started, wherein the first operation information comprises a plurality of operation parameter records.
Specifically, when the air conditioner host enters an operation state after the air conditioner host is started for the first time, the air conditioner host is required to operate for a limited time, so that relevant first operation information is obtained, whether various range conditions are met or not is judged in the follow-up process according to the first operation information, and the first preset time is taken as the judging time of the valve blockage. The first preset time is a time period which is set in advance, and the first operation information can be obtained only by completing operation in the time period after the air conditioner host enters an operation state, and the first preset time can be set according to actual requirements. In addition, the first startup refers to restarting the calculation of the number of times since the air conditioner host was stopped last time, and not starting the calculation of the number of times because the air conditioner host enters the protection state.
For example, after the air conditioner host receives the start-up command, the air conditioner host enters the operation state for the first time, and at this time, the air conditioner host needs to calculate the time from the start-up time, so that the operation of the air conditioner host meets the first preset time, and the first preset time can be set to 1 hour, 0.5 hour or 1.5 hour, for example, 1 hour in this embodiment. When the operation of the air conditioner host meets 1 hour, corresponding first operation information is obtained. The first operation information comprises relevant operation parameter records of the air conditioner host when the air conditioner host operates, and then whether the preset range condition is met or not is judged according to each operation parameter record of the first operation information.
S120, judging whether each operation parameter record of the first operation information meets a preset first operation range.
Specifically, each operation parameter record included in the obtained first operation information is judged according to each operation parameter record, whether each operation parameter record meets a preset first operation range or not is judged, the first operation range refers to an operation range condition which is set in advance, each operation parameter record in the first operation information is compared with a corresponding first operation range, and whether each operation parameter record meets the corresponding first operation range or not is judged. If all the operation parameters contained in the first operation information meet the corresponding first operation range, enabling the air conditioner host to enter a protection state; if one of the operation parameter records in the first operation information does not meet the corresponding first operation range, the air conditioner host is not required to enter a protection state, and normal operation is continued.
For example, after the air conditioner host computer passes through the first preset time, according to the 5 operation parameter records included in the obtained first operation information, the first operation range corresponding to the 5 operation parameter records is the operation range condition set in advance, so that only the 5 operation parameter records are needed to be judged whether the corresponding first operation range is met. The air conditioner host enters a protection state, 5 operation parameter records contained in the first operation information are required to meet the corresponding first operation range, and if the 2 nd operation parameter record of the 5 operation parameter records of the first operation information does not meet the corresponding first operation range, the air conditioner host does not need to enter the protection state, and normal operation is continued.
And S130, if each operation parameter record of the first operation information meets the first operation range, a first protection instruction (an instruction of first valve blocking protection) is sent to the air conditioner host so as to enable the air conditioner host to enter a first protection state.
Specifically, each operation parameter record in the first operation information is compared with the corresponding first operation range, so that whether each operation parameter record meets the first operation range is judged, each operation parameter record and the corresponding first operation range can be compared according to the sequence, each operation parameter record meets the corresponding first operation range, and a first valve blocking protection instruction can be sent to the air conditioner host, so that the air conditioner host enters a first protection state.
For example, the first operation information includes 5 operation parameter records, the 5 operation parameter records are compared with the corresponding first operation range, whether the 5 operation parameter records all meet the corresponding first operation range is judged, the 5 operation parameter records and the corresponding first operation range can be compared according to the sequence, and after the 5 operation parameter records all meet the corresponding first operation range, a first valve blocking protection instruction is sent to the air conditioner host by the controller.
Each operation parameter record in the first operation information corresponds to one operation parameter condition in the first operation range.
Specifically, the first operation range also includes a plurality of operation parameter conditions, and each operation parameter record in each first operation information is compared with the operation parameter conditions in the corresponding first operation range, that is, each operation parameter record corresponds to the plurality of operation parameter conditions one by one.
For example, the first operation information includes 5 operation parameter records, and the first operation range includes 5 operation parameter conditions, and one of the 5 operation parameter records is compared with one of the 5 operation parameter conditions, so as to determine whether the 5 operation parameter records all satisfy the corresponding operation parameter conditions.
In addition, after receiving the instruction of the first valve blocking protection, the air conditioner host in this embodiment enters the valve blocking protection, and stops operating after 3mi n.
S140, obtaining second operation information of the air conditioner host operating in a second preset time after the air conditioner host is started for the second time, wherein the second operation information comprises a plurality of operation parameter records.
Specifically, after the air conditioner host receives the instruction of the first valve blocking protection, the air conditioner host enters the valve blocking protection, so that the air conditioner host needs to be started for the second judgment. When the air conditioner host enters the operation state after being started for the second time, the air conditioner host is required to operate for a limited time, so that relevant second operation information is obtained, whether partial conditions are met or not is judged in the follow-up process according to the second operation information, and the second preset time is taken as the judging time of valve blocking. The second preset time is also a set time period, and the second operation information can be obtained only by the time period after the air conditioner host enters the operation state for the second time, and the second preset time can be set according to actual requirements.
For example, when the operation of the air conditioner host meets 1 hour, corresponding second operation information is obtained. The second operation information comprises related operation parameter records of the air conditioner host when the air conditioner host operates, and then each operation parameter record of the second operation information is used for judging whether a preset range condition is met or not. The second preset time may be set to 1 hour, 0.5 hour, or 1.5 hours, taking 1 hour as an example in this embodiment.
S150, judging whether each operation parameter record of the second operation information meets a preset second operation range.
Specifically, each operation parameter record included in the obtained second operation information is judged according to each operation parameter record, whether each operation parameter record meets a preset second operation range is judged, the second operation range also refers to the operation range condition which is set in advance, each operation parameter record in the second operation information is compared with the corresponding second operation range, and whether each operation parameter record meets the corresponding second operation range is judged.
For example, after the air conditioner host computer passes through the second preset time, according to the 4 operation parameter records included in the obtained second operation information, the second operation range corresponding to the 4 operation parameter records is the operation range condition set in advance, so that only the 4 operation parameter records need to be judged whether the corresponding second operation range is satisfied.
S160, if each operation parameter record of the second operation information meets the second operation range; and sending a second protection instruction (a second valve blocking protection instruction) to the air conditioner host so as to enable the air conditioner host to enter a second protection state.
Specifically, each operation parameter record in the second operation information is compared with the corresponding second operation range, so as to determine whether each operation parameter record meets the second operation range, that is, each operation parameter record and the corresponding first operation range can be compared according to the sequence, so that each operation parameter record meets the second operation range, and a second valve blocking protection instruction can be sent to the air conditioner host, so that the air conditioner host enters a second protection state.
For example, the second operation information includes 4 operation parameter records, the 4 operation parameter records are compared with the corresponding second operation range, whether the 4 operation parameter records all meet the corresponding second operation range is judged, the 4 operation parameter records and the corresponding second operation range can be compared according to the sequence, and after the 4 operation parameter records all meet the corresponding second operation range, a second valve blocking protection instruction is sent to the air conditioner host by the controller.
Each operation parameter record of the second operation information corresponds to one operation parameter condition in the second operation range.
Specifically, the second operation range also includes a plurality of operation parameter conditions, and each operation parameter record in each second operation information is compared with the operation parameter conditions in the corresponding second operation range, that is, each operation parameter record corresponds to the plurality of operation parameter conditions one by one.
For example, the second operation information includes 4 operation parameter records, and the second operation range includes 4 operation parameter conditions, and one of the 4 operation parameter records is compared with one of the 4 operation parameter conditions, so as to determine whether the 4 operation parameter records all satisfy the corresponding operation parameter conditions.
In addition, after the air conditioner host receives the instruction of the second valve blocking protection, the air conditioner host enters the valve blocking protection, and after the preset time, the controller sends a shutdown instruction to the air conditioner host, so that the air conditioner host is shut down after the operation of the air conditioner host is stopped, and the air conditioner host is prevented from continuously operating in an abnormal state. Finally, the controller determines the corresponding abnormality cause problem according to the built-in logic and generates abnormality cause information.
In a specific embodiment, step S110, obtaining first operation information when the air conditioner host is operated within a first preset time after being started, where the first operation information includes a plurality of operation parameter records, includes the steps of:
And judging whether the air conditioner host enters an operating state.
Specifically, after the air conditioner host enters the operation state and a first preset time elapses, the relevant first operation information can be obtained.
If the air conditioner host enters the operation state as a result of the judgment, an operation instruction containing a first preset time is sent to the air conditioner host so as to control the air conditioner host to operate.
Specifically, if the air conditioner host is started, it can be judged that the air conditioner host enters an operation state, and because enough valve blockage judging time is needed after the air conditioner host enters the operation state, an operation instruction of a first preset time is sent to the air conditioner host by the controller, so that the air conditioner host is controlled to need to operate for the first preset time.
For example, after the air conditioner host is started, the controller sends an operation instruction of the valve blockage judging time of 1 hour to the air conditioner host, so that the operation time of the air conditioner host at least meets the valve blockage judging time of 1 hour.
Acquiring first operation information generated when an air conditioner host operates; the operation parameter record in the first operation information comprises indoor and outdoor temperatures, a difference temperature between the outer tube temperature and the outdoor temperature, an operation frequency of the compressor, a current indoor temperature, and a difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature.
Specifically, when the air conditioner host receives an operation command for a first preset time and operates according to the operation command, and after the operation time meets the first preset time, relevant first operation information can be generated, wherein the first operation information comprises indoor and outdoor temperatures (T Inner ring 0 and T Outer ring 0), a difference temperature between an outer pipe temperature and an outdoor temperature (T Outer tube 0-T Outer ring 0), an operation frequency (F 1) of the compressor, a difference temperature between an indoor temperature and an indoor temperature when the air conditioner host is started (T Inner ring for operation -T Inner ring during starting up ), and a difference temperature between an exhaust down-conversion temperature and an indoor exhaust temperature (T Exhaust down conversion -T Indoor exhaust ), that is, the first operation information comprises the above 5 operation parameter records.
In a specific embodiment, step S130, if each operation parameter record of the first operation information satisfies the first operation range, includes the following steps according to fig. 2:
each operation parameter record and the corresponding first operation range can be compared in sequence, so that each operation parameter record can meet the corresponding first operation range, and the judgment and the searching of the embodiment can be performed as follows.
S131, judging whether the indoor and outdoor temperatures meet a preset first indoor and outdoor temperature range.
Specifically, it is first determined whether the indoor and outdoor temperatures satisfy a preset first indoor and outdoor temperature range, which is set in advance according to actual conditions.
And S132, if the judging result is that the indoor and outdoor temperatures meet the preset first indoor and outdoor temperature range, judging whether the difference temperature between the outer pipe temperature and the outdoor temperature meets the preset first difference temperature range.
Specifically, the current indoor and outdoor temperature is required to meet the first indoor and outdoor temperature range to perform the next step of judgment, specifically, the current indoor and outdoor temperature is not less than 16 ℃ and not more than Inner ring 0 and T Outer ring 0 is not more than 40 ℃, and the current indoor and outdoor temperature is not more than 16 ℃ and not more than 40 ℃. When the indoor and outdoor temperatures meet the preset first indoor and outdoor temperature range, then judging whether the difference temperature between the outer tube temperature and the outdoor temperature meets the preset first difference temperature range, wherein the first difference temperature range of the embodiment is set in advance according to the actual situation.
S133, if the judging result is that the difference temperature of the outer pipe temperature and the outdoor temperature meets the preset first difference temperature range, judging whether the operation frequency of the compressor meets the preset first frequency range.
Specifically, the difference temperature between the outer tube temperature and the outdoor temperature is required to meet a preset first difference temperature range, and then the next judgment can be performed, specifically, T Outer tube 0-T Outer ring 0 is less than or equal to 1.5 ℃, and the difference temperature between the outer tube temperature and the outdoor temperature is less than or equal to 1.5 ℃. When the difference temperature between the outer tube temperature and the outdoor temperature satisfies the preset first difference temperature range, then it is determined whether the operation frequency of the compressor satisfies the preset first frequency range, and the first frequency range of the embodiment is also set in advance according to the actual situation.
And S134, if the operation frequency of the compressor meets the preset first frequency range, judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets the preset first valve blocking temperature range.
Specifically, the operation frequency of the compressor needs to meet the preset first frequency range, so that the next step of judgment can be performed, specifically, F 1≥F Valve blocking operation frequency , and the operation frequency of the compressor needs to be greater than or equal to the valve blocking operation frequency, so that the next step of judgment can be performed. When the operation frequency of the compressor meets a preset first frequency range, then judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets a preset first valve blocking temperature range or not, wherein the first valve blocking temperature range is set in advance according to actual conditions.
And S135, if the judgment result is that whether the difference temperature between the indoor temperature of the operation and the indoor temperature during startup meets the preset first valve blocking temperature range, judging whether the difference temperature between the exhaust frequency reduction temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range.
Specifically, whether the difference temperature between the operating indoor temperature and the indoor temperature during startup meets the preset first valve blockage temperature range or not is needed, specifically, T Inner ring for operation -T Inner ring during starting up ≤T Valve plug judging temperature 1 is needed, and the difference temperature between the operating indoor temperature and the indoor temperature during startup is smaller than or equal to the first valve blockage judgment temperature, so that the next judgment can be performed. When the difference temperature between the indoor temperature and the indoor temperature during starting up meets the preset first valve blocking temperature range, whether the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range is judged, and the second valve blocking temperature range is set in advance according to actual conditions.
If the judgment result is that the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range, each operation parameter record of the first operation information is determined to meet the first operation range.
If the indoor and outdoor temperatures do not meet the preset first indoor and outdoor temperature range, or the difference temperature between the outer tube temperature and the outdoor temperature does not meet the preset first difference temperature range, or the operation frequency of the compressor does not meet the preset first frequency range, or the difference temperature between the indoor temperature and the indoor temperature during starting up does not meet the preset first valve blocking temperature range, or the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature does not meet the preset second valve blocking temperature range, determining that any operation parameter record of the first operation information does not meet the first operation range.
In a specific embodiment, before determining whether the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range in step S135, according to fig. 3, the method further includes the steps of:
S1351, judging whether the difference temperature between the temperature of the inner pipe and the indoor temperature meets the second valve blocking temperature range.
Specifically, before judging whether the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range, it is further required to judge whether the difference temperature between the inner pipe temperature and the indoor temperature meets the second valve blocking temperature range, where the second valve blocking temperature range in this embodiment is consistent with the valve blocking temperature range defined by the second valve blocking temperature range.
S1352, if the difference temperature between the inner pipe temperature and the indoor temperature is determined to meet the second valve blocking temperature range, a command for reducing the frequency to a preset frequency in a preset time is sent to the compressor.
Specifically, because the temperature of the down-converting exhaust gas can be reduced under the condition of normal flow of the refrigerant, the exhaust gas can be raised under the condition of valve blockage, and the down-converting operation is needed for the compressor, so that whether the difference temperature between the inner pipe temperature and the indoor temperature meets the second valve blockage temperature range or not is judged, the down-converting operation can be performed for the compressor, specifically, T Inner pipe 1-T Inner ring 1≤T Valve plug judging temperature 2, and the difference temperature between the inner pipe temperature and the indoor temperature is smaller than or equal to the second valve blockage judgment temperature, so that the down-converting operation can be performed for the compressor. When the difference temperature between the inner pipe temperature and the indoor temperature meets the second valve blocking temperature range, the controller sends an instruction of reducing the frequency to a preset frequency in a preset time to the compressor. In this embodiment, the controller sends an instruction to the compressor to reduce the frequency to 5-10 hz, for example, so that the compressor operates at 5-10 hz for 0.5-1.5 minutes.
In addition, if the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range, the controller can send the instruction of the first valve blocking protection to the air conditioner host, so that the air conditioner host enters a protection state, the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature meets the second valve blocking temperature range, which means that T Exhaust down conversion -T Inner ring exhaust 0≤T Valve plug judging temperature 2, and the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature is required to be less than or equal to the second valve blocking judgment temperature, and the instruction of the first valve blocking protection can be sent to the air conditioner host.
In a specific embodiment, step S140, obtaining second operation information of the air conditioner host operating within a second preset time after the second startup, the second operation information including a plurality of operation parameter records, includes the steps of:
And judging whether the air conditioner host enters an operating state.
If the air conditioner host enters the operation state as a result of the judgment, an operation instruction containing a second preset time is sent to the air conditioner host so as to control the air conditioner host to operate.
Specifically, if the air conditioner host is started for the second time, the air conditioner host can be judged to enter the operation state, and because enough valve blockage judging time is needed after the air conditioner host enters the operation state, the controller sends an operation instruction of a first preset time to the air conditioner host, so that the air conditioner host is controlled to need to operate for the first preset time.
For example, after the air conditioner host is started, the controller sends an operation instruction of the valve blockage judging time of 1 hour to the air conditioner host, so that the operation time of the air conditioner host is at least 1 hour.
Acquiring second operation information generated when the air conditioner host operates; the operation parameter record in the second operation information includes indoor and outdoor temperatures, a difference temperature between the outer tube temperature and the outdoor temperature, an operation frequency of the compressor, a difference temperature between the indoor temperature and the indoor temperature when the compressor is started, and a difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature.
Specifically, when the air conditioner host receives an operation command for a second preset time and operates according to the operation command, and after the operation time meets the second preset time, relevant second operation information can be generated, wherein the second operation information comprises 5 operation parameter records of indoor and outdoor temperatures (T Inner ring 0 and T Outer ring 0), a difference temperature between an outer pipe temperature and an outdoor temperature (T Outer tube 0-T Outer ring 0), an operation frequency (F 1) of the compressor, a difference temperature between an indoor temperature and an indoor temperature when the air conditioner host is started (T Inner ring for operation -T Inner ring during starting up ), and a difference temperature between an exhaust down-conversion temperature and an indoor exhaust temperature (T Exhaust down conversion -T Indoor exhaust ).
In a specific embodiment, step S160, if each operation parameter record of the second operation information satisfies the second operation range, includes the steps of:
s161, judging whether the indoor and outdoor temperatures meet a preset second indoor and outdoor temperature range.
And S162, if the judging result is that the indoor and outdoor temperatures meet the preset second indoor and outdoor temperature range, judging whether the difference temperature between the outer pipe temperature and the outdoor temperature meets the preset second difference temperature range or not.
S163, if the difference temperature meets the preset second difference temperature range, judging whether the operation frequency of the compressor meets the preset second frequency range.
And S164, if the operation frequency of the compressor meets the preset second frequency range, judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets the preset third valve blocking temperature range.
And S165, if the judgment result is that the difference temperature between the indoor temperature of the operation and the indoor temperature during starting meets the preset third valve blocking temperature range, judging whether the difference temperature between the exhaust frequency reduction temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range.
Each second operation parameter record and the corresponding second operation range can be compared according to the sequence, so that each operation parameter record can meet the corresponding second operation range, and the judging sequence can be according to the above.
Specifically, it is first determined whether the indoor and outdoor temperatures satisfy a preset second indoor and outdoor temperature range, which is set in advance according to actual conditions. The next step of judgment can be performed only when the current indoor and outdoor temperature meets the second indoor and outdoor temperature range, specifically, when the temperature is not higher than 16 ℃ and not higher than T Inner ring 0 and not higher than T Outer ring 0 and not higher than 40 ℃, the indoor and outdoor temperature is between 16 ℃ and 40 ℃. When the indoor and outdoor temperatures meet the preset second indoor and outdoor temperature range, then judging whether the difference temperature between the outer tube temperature and the outdoor temperature meets the preset second difference temperature range, wherein the second difference temperature range of the embodiment is set in advance according to the actual situation. The next step of judgment can be performed only when the difference temperature between the outer tube temperature and the outdoor temperature meets a preset second difference temperature range, specifically, T Outer tube 0-T Outer ring 0 is less than or equal to 1.5 ℃, and the difference temperature between the outer tube temperature and the outdoor temperature is less than or equal to 1.5 ℃. When the difference temperature between the outer tube temperature and the outdoor temperature satisfies the preset second difference temperature range, then it is determined whether the operation frequency of the compressor satisfies the preset second frequency range, and the second frequency range of the embodiment is already set in advance according to the actual situation. The operation frequency of the compressor is required to meet the preset second frequency range, and then the next step of judgment can be performed, specifically, F 1≥F Valve blocking operation frequency , after the operation frequency of the compressor is required to be greater than or equal to the valve blocking operation frequency. When the operation frequency of the compressor meets a preset second frequency range, then judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets a preset third valve blocking temperature range or not, wherein the third valve blocking temperature range is set in advance according to actual conditions. The next step of judgment can be performed only if the difference temperature between the operating indoor temperature and the indoor temperature during startup meets the preset third valve blocking temperature range, specifically, T Inner ring for operation -T Inner ring during starting up ≤T Valve plug judging temperature 1, and the next step of judgment can be performed only if the difference temperature between the operating indoor temperature and the indoor temperature during startup is less than or equal to the third valve blocking judgment temperature. When the difference temperature between the indoor temperature and the indoor temperature during starting up meets the preset third valve blocking temperature range, whether the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range is judged, and the fourth valve blocking temperature range is set in advance according to actual conditions.
If the judgment result is that the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range, determining that each operation parameter record of the second operation information meets the second operation range.
If the indoor and outdoor temperatures do not meet the preset second indoor and outdoor temperature range, or the difference temperature does not meet the preset second difference temperature range, or the operation frequency of the compressor does not meet the preset second frequency range, or the difference temperature between the indoor temperature and the indoor temperature during starting up does not meet the preset third valve blocking temperature range, or the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature does not meet the preset fourth valve blocking temperature range, determining that any operation parameter record of the second operation information does not meet the second operation range.
After the air conditioner host is started for the second time, the judgment of whether the difference temperature between the inner pipe temperature and the indoor temperature meets the valve blockage temperature range is canceled, and the operation frequency of the compressor is possibly reduced at the moment, so that the correction coefficient is required to be added to the frequency judgment condition, and the frequency range is reduced, so that the requirement of sending a second valve blockage protection instruction to the air conditioner host is met.
In a specific embodiment, before determining whether the operation frequency of the compressor meets the preset second frequency range, the method further includes the steps of:
It is determined whether the current operating frequency of the compressor is reduced relative to the operating frequency of the compressor prior to entering the first protection state.
Specifically, when the air conditioner host is started for the second time, and after the air conditioner host operates according to the operation instruction of the second preset time, whether the operation frequency of the compressor is reduced by a part compared with the operation frequency of the compressor of the air conditioner host before the first protection state is judged.
If the operation frequency of the current compressor is reduced relative to the operation frequency of the compressor before entering the first protection state, the correction coefficient is increased for the second frequency range.
Specifically, if the determination result determines that the operation frequency of the current compressor is reduced relative to the operation frequency of the compressor before the first protection state is entered, a part of the correction coefficient is increased.
For example, when the air conditioner main unit is in the valve blocking state, the second frequency range may be set in the range of 34 to 37hz, and the correction coefficient increased by 3 to 4 may be set for the second frequency range.
In addition, after the correction coefficient is increased, whether the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature meets the fourth valve blocking temperature range or not is judged, the judgment condition, the operation frequency change of the compressor and the change of the inner pipe temperature jointly judge the operation condition of the compressor, and the specific value can be set according to the current compensation value during operation.
The control method for the valve cut-off protection further comprises the following steps:
If one of the first operation parameter records is judged to not meet the corresponding first operation parameter range, or one of the second operation parameter records is judged to not meet the corresponding second operation parameter range, a normal operation instruction is sent to the air conditioner host.
Specifically, whether one of the first operation parameter records does not meet the corresponding first operation parameter range or one of the second operation parameter records does not meet the corresponding second operation parameter range is judged, that is, if one of the judgment results is not met, it is indicated that the air conditioner host is abnormal, and then a normal operation instruction is sent to the air conditioner host by the controller.
The air conditioning apparatus according to the embodiment of the present invention is similar in decision logic when it is in cooling or heating, and is implemented by the above-described embodiment.
In the method for controlling valve cut-off protection provided in the embodiment of the invention, if each operation parameter record of the first operation information is judged to meet the first operation range, a first valve cut-off protection instruction is sent to the air conditioner host so as to enable the air conditioner host to enter a first protection state, and if each operation parameter record of the second operation information is judged to meet the second operation range; and sending a second valve blocking protection instruction to the air conditioner host so as to enable the air conditioner host to enter a second protection state, and judging that the valve of the air conditioner host is abnormal through various logics, so that the air conditioner host enters the protection state and stops operating, thereby ensuring the safe operation of air conditioner equipment and avoiding the situation of misjudgment and failure.
Corresponding to the above-mentioned control method of valve cut-off protection, the embodiment of the present invention further provides a valve cut-off protection device 100, where the valve cut-off protection device 100 is configured in a controller of an air conditioning device, the air conditioning device further includes an air conditioning host, and the controller is in control connection with the air conditioning host, and according to fig. 5, the device 100 specifically includes:
the first obtaining module 110 is configured to obtain first operation information when the air conditioner host is operated within a first preset time after the air conditioner host is started, where the first operation information includes a plurality of operation parameter records.
The first determining module 120 is configured to determine whether each operation parameter record of the first operation information meets a preset first operation range.
The first sending module 130 is configured to send a first valve blocking protection instruction to the air conditioner host to enter the air conditioner host into a first protection state if each operation parameter record of the first operation information meets the first operation range.
The second obtaining module 140 is configured to obtain second operation information of the air conditioner host operating within a second preset time after the air conditioner host is powered on for a second time, where the second operation information includes a plurality of operation parameter records.
The second determining module 150 is configured to determine whether each operation parameter record of the second operation information meets a preset second operation range.
The second sending module 160 is configured to, if each operation parameter record of the second operation information meets the second operation range; and sending a second valve blocking protection instruction to the air conditioner host to enable the air conditioner host to enter a second protection state.
In the device 10 for valve cut-off protection provided in the embodiment of the present invention, if each operation parameter record of the first operation information is judged to satisfy the first operation range, a first valve cut-off protection instruction is sent to the air conditioner host to put the air conditioner host into the first protection state, and if each operation parameter record of the second operation information is judged to satisfy the second operation range; and sending a second valve blocking protection instruction to the air conditioner host so as to enable the air conditioner host to enter a second protection state, and judging that the valve of the air conditioner host is abnormal through various logics, so that the air conditioner host enters the protection state and stops operating, thereby ensuring the safe operation of air conditioner equipment and avoiding the situation of misjudgment and failure.
The embodiment of the present invention further provides an air conditioning system 10, according to fig. 6, the air conditioning system 10 includes a processor 401, a communication interface 402, a memory 403 and a communication bus 404, where the processor 401, the communication interface 402, and the memory 403 complete communication with each other through the communication bus 404; a memory 403 for storing a computer program; in one embodiment of the present invention, the processor 401 is configured to implement the steps of the valve cut-off protection control method according to any one of the control method embodiments described above when executing the program stored in the memory 403.
The embodiment of the invention further provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the control method for valve cut-off protection provided above.
It should be noted that in this document, relational terms such as "first" and "second" and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The control method for the valve cut-off protection is characterized by being applied to a controller of air conditioning equipment, the air conditioning equipment further comprises an air conditioning host, the controller is in control connection with the air conditioning host, and the control method comprises the following steps:
Acquiring first operation information of the air conditioner host which operates in a first preset time after the air conditioner host is started; the operation parameter records of the first operation information comprise indoor and outdoor temperatures, a difference temperature between an outer pipe temperature and an outdoor temperature, an operation frequency of a compressor, a difference temperature between an operation indoor temperature and an indoor temperature when the engine is started, and a difference temperature between an exhaust frequency-reducing temperature and an indoor exhaust temperature;
Judging whether each operation parameter record of the first operation information meets a preset first operation range or not; the first operation range comprises a first indoor and outdoor temperature range, a first difference temperature range, a first frequency range, a first valve blocking temperature range and a second valve blocking temperature range; judging whether the indoor and outdoor temperature meets a preset first indoor and outdoor temperature range or not; if the indoor and outdoor temperatures meet the preset first indoor and outdoor temperature range, judging whether the difference temperature between the outer tube temperature and the outdoor temperature meets the preset first difference temperature range or not; if the judging result is that the difference temperature of the outer tube temperature and the outdoor temperature meets the preset first difference temperature range, judging whether the operation frequency of the compressor meets the preset first frequency range or not; if the operation frequency of the compressor meets the preset first frequency range, judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets a preset first valve blocking temperature range or not; if the judgment result is that the difference temperature between the indoor temperature of the operation and the indoor temperature during starting meets the preset first valve blocking temperature range, judging whether the difference temperature between the exhaust frequency reduction temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range; if the judgment result shows that the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range, determining that each operation parameter record of the first operation information meets the first operation range; if the indoor and outdoor temperatures do not meet the preset first indoor and outdoor temperature range, or the difference temperature between the outer tube temperature and the outdoor temperature does not meet the preset first difference temperature range, or the operation frequency of the compressor does not meet the preset first frequency range, or the difference temperature between the operation indoor temperature and the indoor temperature during starting up does not meet the preset first valve blocking temperature range, or the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature does not meet the preset second valve blocking temperature range, determining that any operation parameter record of the first operation information does not meet the first operation range;
If each operation parameter record of the first operation information meets the first operation range, a first protection instruction is sent to the air conditioner host computer to enter a first protection state;
Acquiring second operation information of the air conditioner host which operates in a second preset time after the air conditioner host is started for the second time; the operation parameter records in the second operation information comprise indoor and outdoor temperatures, a difference temperature between an outer pipe temperature and an outdoor temperature, an operation frequency of a compressor, a difference temperature between an operation indoor temperature and an indoor temperature when the engine is started, and a difference temperature between an exhaust frequency-reducing temperature and an indoor exhaust temperature;
Judging whether each operation parameter record of the second operation information meets a preset second operation range or not; the second operation range comprises a second indoor and outdoor temperature range, a second difference temperature range, a second frequency range, a third valve blocking temperature range and a fourth valve blocking temperature range; judging whether the indoor and outdoor temperature meets a preset second indoor and outdoor temperature range or not; if the judging result is that the indoor and outdoor temperatures meet the preset second indoor and outdoor temperature range, judging whether the difference temperature between the outer pipe temperature and the outdoor temperature meets the preset second difference temperature range or not; if the difference temperature meets the preset second difference temperature range, judging whether the operation frequency of the compressor meets the preset second frequency range or not; if the operation frequency of the compressor meets the preset second frequency range, judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets a preset third valve blocking temperature range or not; if the judgment result is that the difference temperature between the indoor temperature of the operation and the indoor temperature during starting meets the preset third valve blocking temperature range, judging whether the difference temperature between the exhaust frequency reduction temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range; if the judgment result shows that the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range, determining that each operation parameter record of the second operation information meets a second operation range; if the indoor and outdoor temperatures do not meet the preset second indoor and outdoor temperature range, or the difference temperature does not meet the preset second difference temperature range, or the operation frequency of the compressor does not meet the preset second frequency range, or the difference temperature between the operation indoor temperature and the indoor temperature during starting up does not meet the preset third valve blocking temperature range, or the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature does not meet the preset fourth valve blocking temperature range, determining that any operation parameter record of the second operation information does not meet the second operation range;
If each operation parameter record of the second operation information meets the second operation range; and sending out a second protection instruction to the air conditioner host to enter a second protection state.
2. The method for controlling valve cut-off protection according to claim 1, wherein the obtaining the first operation information of the air conditioner host operating within the first preset time after the air conditioner host is started comprises:
judging whether the air conditioner host enters an operation state or not;
If the judging result shows that the air conditioner host enters an operation state, sending an operation instruction containing the first preset time to the air conditioner host so as to control the air conditioner host to operate;
and acquiring the first operation information generated when the air conditioner host operates.
3. The method for controlling valve cut-off protection according to claim 1, wherein before determining whether the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature satisfies the preset second valve plug temperature range, further comprising:
Judging whether the difference temperature between the temperature of the inner pipe and the indoor temperature meets the second valve blocking temperature range;
And if the judging result shows that the difference temperature between the inner pipe temperature and the indoor temperature meets the second valve blocking temperature range, sending a command of reducing the frequency to a preset frequency in a preset time to the compressor.
4. The method for controlling valve cut-off protection according to claim 1, wherein the obtaining second operation information of the air conditioner host operating within a second preset time after the air conditioner host is started up for the second time comprises:
judging whether the air conditioner host enters an operation state or not;
If the judging result shows that the air conditioner host enters an operation state, sending an operation instruction containing the second preset time to the air conditioner host so as to control the air conditioner host to operate;
And acquiring second operation information generated when the air conditioner host operates.
5. The method for controlling valve cut-off protection according to claim 1, wherein before determining whether the operation frequency of the compressor satisfies a preset second frequency range, further comprising:
judging whether the current operation frequency of the compressor is reduced relative to the operation frequency of the compressor before entering a first protection state;
if the judgment result shows that the operation frequency of the current compressor is reduced relative to the operation frequency of the compressor before entering the first protection state, a correction coefficient is added to the second frequency range.
6. The device of valve cut-off protection, its characterized in that, the device disposes in air conditioning equipment's controller, air conditioning equipment still includes the air conditioner host computer, the controller is connected with the air conditioner host computer control, the device includes:
The first acquisition module is used for acquiring first operation information of the operation of the air conditioner host within a first preset time after the air conditioner host is started; the operation parameter record of the first operation information comprises an indoor temperature, an outdoor temperature, a compressor operation frequency, an indoor temperature and an indoor temperature difference temperature when the air conditioner is started, and an air exhaust frequency-reducing temperature and an indoor air exhaust temperature difference temperature;
The first judging module is used for judging whether each operation parameter record of the first operation information meets a preset first operation range or not; the first operation range comprises a first indoor and outdoor temperature range, a first difference temperature range, a first frequency range, a first valve blocking temperature range and a second valve blocking temperature range; judging whether the indoor and outdoor temperature meets a preset first indoor and outdoor temperature range or not; if the indoor and outdoor temperatures meet the preset first indoor and outdoor temperature range, judging whether the difference temperature between the outer tube temperature and the outdoor temperature meets the preset first difference temperature range or not; if the judging result is that the difference temperature of the outer tube temperature and the outdoor temperature meets the preset first difference temperature range, judging whether the operation frequency of the compressor meets the preset first frequency range or not; if the operation frequency of the compressor meets the preset first frequency range, judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets a preset first valve blocking temperature range or not; if the judgment result is that the difference temperature between the indoor temperature of the operation and the indoor temperature during starting meets the preset first valve blocking temperature range, judging whether the difference temperature between the exhaust frequency reduction temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range; if the judgment result shows that the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset second valve blocking temperature range, determining that each operation parameter record of the first operation information meets the first operation range; if the indoor and outdoor temperatures do not meet the preset first indoor and outdoor temperature range, or the difference temperature between the outer tube temperature and the outdoor temperature does not meet the preset first difference temperature range, or the operation frequency of the compressor does not meet the preset first frequency range, or the difference temperature between the operation indoor temperature and the indoor temperature during starting up does not meet the preset first valve blocking temperature range, or the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature does not meet the preset second valve blocking temperature range, determining that any operation parameter record of the first operation information does not meet the first operation range;
The first sending module is used for sending a first protection instruction to the air conditioner host to enter a first protection state if each operation parameter record of the first operation information meets the first operation range;
The second acquisition module is used for acquiring second operation information of the air conditioner host which operates in a second preset time after the air conditioner host is started for the second time; the operation parameter records in the second operation information comprise indoor and outdoor temperatures, a difference temperature between an outer pipe temperature and an outdoor temperature, an operation frequency of a compressor, a difference temperature between an operation indoor temperature and an indoor temperature when the engine is started, and a difference temperature between an exhaust frequency-reducing temperature and an indoor exhaust temperature;
The second judging module is used for judging whether each operation parameter record of the second operation information meets a preset second operation range or not; the second operation range comprises a second indoor and outdoor temperature range, a second difference temperature range, a second frequency range, a third valve blocking temperature range and a fourth valve blocking temperature range; judging whether the indoor and outdoor temperature meets a preset second indoor and outdoor temperature range or not; if the judging result is that the indoor and outdoor temperatures meet the preset second indoor and outdoor temperature range, judging whether the difference temperature between the outer pipe temperature and the outdoor temperature meets the preset second difference temperature range or not; if the difference temperature meets the preset second difference temperature range, judging whether the operation frequency of the compressor meets the preset second frequency range or not; if the operation frequency of the compressor meets the preset second frequency range, judging whether the difference temperature between the indoor temperature and the indoor temperature during starting meets a preset third valve blocking temperature range or not; if the judgment result is that the difference temperature between the indoor temperature of the operation and the indoor temperature during starting meets the preset third valve blocking temperature range, judging whether the difference temperature between the exhaust frequency reduction temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range; if the judgment result shows that the difference temperature between the exhaust frequency-reducing temperature and the indoor exhaust temperature meets the preset fourth valve blocking temperature range, determining that each operation parameter record of the second operation information meets a second operation range; if the indoor and outdoor temperatures do not meet the preset second indoor and outdoor temperature range, or the difference temperature does not meet the preset second difference temperature range, or the operation frequency of the compressor does not meet the preset second frequency range, or the difference temperature between the operation indoor temperature and the indoor temperature during starting up does not meet the preset third valve blocking temperature range, or the difference temperature between the exhaust down-conversion temperature and the indoor exhaust temperature does not meet the preset fourth valve blocking temperature range, determining that any operation parameter record of the second operation information does not meet the second operation range;
the second sending module is used for sending the second operation information to the second sending module if each operation parameter record of the second operation information meets the second operation range; and sending out a second protection instruction to the air conditioner host to enter a second protection state.
7. The air conditioning system is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
A memory for storing a computer program;
A processor for implementing the steps of the valve cut-off protection control method according to any one of claims 1 to 5 when executing a program stored on a memory.
8. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, carries out the steps of the control method of valve cut-off protection according to any one of claims 1-5.
CN202211248928.2A 2022-10-12 2022-10-12 Control method and device for valve cut-off protection, air conditioning system and storage medium Active CN115614915B (en)

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