CN117387182A - Control method and device for communication-free air conditioning unit, medium and unit - Google Patents
Control method and device for communication-free air conditioning unit, medium and unit Download PDFInfo
- Publication number
- CN117387182A CN117387182A CN202311697454.4A CN202311697454A CN117387182A CN 117387182 A CN117387182 A CN 117387182A CN 202311697454 A CN202311697454 A CN 202311697454A CN 117387182 A CN117387182 A CN 117387182A
- Authority
- CN
- China
- Prior art keywords
- shutdown signal
- compressor
- pressure value
- controlling
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004378 air conditioning Methods 0.000 title claims abstract description 30
- 238000010977 unit operation Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 29
- 230000008859 change Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
Abstract
The application discloses a control method, a device, a medium and a unit of a communication-free air conditioning unit, and belongs to the field of temperature regulation. The control method is applied to the external machine, when the external machine receives a shutdown signal of the temperature controller, the operation frequency of the compressor is controlled to be reduced firstly, then target parameters are obtained according to the type of the shutdown signal and the unit operation mode, and finally, when the target parameters meet preset conditions, the compressor is controlled to be shut down. The scheme of the application does not directly shut down when a shutdown signal is received, but reduces the operating frequency. The method has the advantages that the compressor is controlled to be shut down after the target parameters meet the preset conditions, so that the frequent start and stop of the compressor are avoided, unnecessary energy loss is avoided, the service life of related elements is prolonged, the indoor temperature is not changed frequently, and the use experience of a user is good.
Description
Technical Field
The application relates to the field of temperature regulation, in particular to a control method, a device, a medium and a unit of a communication-free air conditioning unit.
Background
The communication-free air conditioning unit has the advantages of convenient installation, independent modules, flexible collocation and the like, is popular in the air conditioning market, and occupies a larger market. The modules of the communication-free air conditioning unit are controlled independently, and communication cannot be performed between the inner machine and the outer machine due to the problems of communication protocols and the like. Generally consists of three parts: temperature controller, internal machine and external machine. The three parts are controlled by the 24VAC switching value, namely the temperature controller of the communication-free air conditioning unit unidirectionally sends a switching instruction to the inner machine and the outer machine, and then the inner machine and the outer machine are respectively started or shut down according to preset logic after receiving the switching instruction. The internal machine and the external machine respectively acquire parameters, but cannot acquire the parameters of the other party and cannot accept the control instruction of the other party.
After the indoor environment temperature reaches the indoor set temperature, the existing communication-free air conditioning unit sends a signal to the temperature controller, and then the temperature controller sends a shutdown signal to the external machine, and the control module of the external machine controls the compressor to stop running. When the indoor environment temperature deviates from the indoor set temperature, the control system can control the compressor to start, the compressor can be started and stopped frequently due to the change of the indoor temperature, unnecessary energy loss is caused, the service life of related elements can be influenced, and the indoor temperature can be changed frequently, so that the use experience of a user is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, the application provides a control method, a device, a medium and a unit of a communication-free air conditioning unit, so as to solve the problems that the change of the indoor temperature of the existing communication-free air conditioning unit can cause frequent start and stop of a compressor, not only causes unnecessary energy loss, but also can influence the service life of related elements, and the indoor temperature can change frequently, so that the use experience of a user is poor.
The technical scheme adopted for solving the technical problems is as follows:
in a first aspect, a control method of a communication-free air conditioning unit is provided, and the method is applied to an external unit, and includes:
when a shutdown signal sent by a temperature controller is received, controlling the running frequency of the compressor to reduce a preset frequency value;
obtaining target parameters according to the shutdown signal type and a unit operation mode, wherein the shutdown signal type comprises a first shutdown signal and a second shutdown signal, the first shutdown signal is a shutdown signal generated when the indoor environment temperature reaches the indoor set temperature, the second shutdown signal is a shutdown signal generated when a user manually shuts down, and the unit operation mode comprises refrigeration operation and heating operation;
and when the target parameter meets a preset condition, controlling the compressor to be shut down.
Further, the obtaining the target parameter according to the shutdown signal type and the unit operation mode includes:
and if the shutdown signal is a first shutdown signal and the unit operation mode is refrigeration operation, acquiring an initial low pressure value and a current low pressure value before the operation frequency of the compressor is reduced.
Further, when the target parameter meets a preset condition, controlling the compressor to be shut down includes:
when the operation frequency of the compressor is reduced, calculating a low pressure difference value between the initial low pressure value and the current low pressure value at intervals of a first preset time;
and when the low pressure difference value is larger than a first set pressure value, controlling the compressor to be shut down.
Further, the method further comprises the following steps:
and when the low pressure difference value is smaller than a second set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the second set pressure value is smaller than the first set pressure value.
Further, the method further comprises the following steps:
and when the low pressure difference value is larger than or equal to the second set pressure value and smaller than or equal to the first set pressure value, controlling the operation frequency of the compressor to be unchanged.
Further, the obtaining the target parameter according to the shutdown signal type and the unit operation mode includes:
and if the shutdown signal is a first shutdown signal and the unit operation mode is heating operation, acquiring an initial high-pressure value and a current high-pressure value before the operation frequency of the compressor is reduced.
Further, when the target parameter meets a preset condition, controlling the compressor to be shut down includes:
when the operation frequency of the compressor is reduced, calculating a high-pressure difference value between the current high-pressure value and the initial high-pressure value every second preset time;
and when the high pressure difference value is larger than a third set pressure value, controlling the compressor to be shut down.
Further, the method further comprises the following steps:
and when the high pressure difference value is smaller than a fourth set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the fourth set pressure value is smaller than the third set pressure value.
Further, the method further comprises the following steps:
and when the high pressure difference value is larger than or equal to a fourth set pressure value and smaller than or equal to a third set pressure value, controlling the operation frequency of the compressor to be unchanged.
Further, the obtaining the target parameter according to the shutdown signal type and the unit operation mode includes:
when the type of the shutdown signal is the second shutdown signal, the initial time and the current time of the shutdown signal sent by the temperature controller are obtained.
Further, when the target parameter meets a preset condition, controlling the compressor to be shut down includes:
and when the difference value between the current time and the initial time does not exceed the preset duration, if a second shutdown signal sent again by the temperature controller is received, controlling the compressor to shutdown.
In a second aspect, a control device of a communication-free air conditioning unit is provided, and is applied to an external unit, and the device includes:
the operation frequency control module is used for controlling the operation frequency of the compressor to reduce a preset frequency value when receiving a shutdown signal sent by the temperature controller;
the target parameter acquisition module is used for acquiring target parameters according to the shutdown signal type and a unit operation mode, wherein the shutdown signal type comprises a first shutdown signal and a second shutdown signal, the first shutdown signal is a shutdown signal generated when the indoor environment temperature reaches the indoor set temperature, the second shutdown signal is a shutdown signal generated when a user manually shuts down, and the unit operation mode comprises refrigeration operation and heating operation;
and the compressor shutdown module is used for controlling the compressor to be shut down when the target parameters meet preset conditions.
In a third aspect, there is provided a computer readable storage medium comprising:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to perform the above-described communication-free air conditioning unit control method.
In a fourth aspect, a communication-free air conditioning unit is provided, and the control method of the communication-free air conditioning unit is applied.
Advantageous effects
The control method is applied to an external machine, when the external machine receives a shutdown signal of a temperature controller, the external machine firstly controls the operation frequency of a compressor to be reduced, then obtains target parameters according to the type of the shutdown signal and the operation mode of the machine, and finally controls the compressor to be shut down when the target parameters meet preset conditions. The scheme of the application does not directly shut down when a shutdown signal is received, but reduces the operating frequency. The method has the advantages that the compressor is controlled to be shut down after the target parameters meet the preset conditions, so that the frequent start and stop of the compressor are avoided, unnecessary energy loss is avoided, the service life of related elements is prolonged, the indoor temperature is not changed frequently, and the use experience of a user is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an air conditioning unit according to an embodiment of the present application;
fig. 2 is a flowchart of a control method of a communication-free air conditioning unit according to an embodiment of the present application;
FIG. 3 is a flowchart of a control device of a communication-free air conditioning unit according to an embodiment of the present application;
reference numerals:
1-compressor, 2-dry filter, 3-high pressure sensor, 4-four-way valve, 5-low pressure switch, 6-low pressure sensor, 7-double pipe heat exchanger, 8-water inlet, 9-delivery port, 10-electronic expansion valve A, 11-electronic expansion valve B, 12-fin heat exchanger, 13-stop valve A, 14-stop valve B, 15-fan.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail with reference to the accompanying drawings and examples. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, based on the examples herein, which are within the scope of the protection sought by those of ordinary skill in the art without undue effort, are intended to be encompassed by the present application.
First, the working flows of the air conditioning unit in different operation modes are described, and as shown in fig. 1, a schematic diagram of the air conditioning unit is given, and when the system is refrigerating: the high-temperature and high-pressure gas from the compressor 1 flows through the dry filter 2 and the high-pressure sensor 3 and then reaches the four-way valve 4, and the gas from the four-way valve 4 exchanges heat with water when passing through the double pipe heat exchanger 7. Water flows in from the water inlet 8 and flows out from the water outlet 9, and a large amount of heat in the gas is absorbed. The low-temperature high-pressure gas coming out of the sleeve heat exchanger 7 is changed into low-temperature low-pressure liquid after passing through the electronic expansion valve A10, the stop valve B14 and the electronic expansion valve B11, is changed into normal-temperature low-pressure liquid after passing through the fin heat exchanger 12 and exchanging heat with air, absorbs heat in the air, returns to the four-way valve 4 after passing through the stop valve A13, and returns to the compressor after passing through the low-pressure switch 5 and the low-pressure sensor 6 to complete the circulation of the refrigerant. The heat in the air is absorbed by the refrigerant and then becomes cold air, and the cold air is blown out into the room after being absorbed by the fan 15, so that the indoor temperature is reduced.
When the system heats up: the high-temperature and high-pressure gas from the compressor 1 flows through the dry filter 2 and the high-pressure sensor 3 and then reaches the four-way valve 4, the high-temperature and high-pressure gas from the four-way valve 4 enters the fin heat exchanger 12 through the stop valve A13 to exchange heat with air, is condensed into low-temperature and low-pressure liquid, flows through the electronic expansion valve B11, the stop valve B14 and the electronic expansion valve A10, the low-temperature and high-pressure gas from the compressor enters the double-pipe heat exchanger 7 to exchange heat with water, is converted into normal-temperature gas after absorbing heat of the water, flows through the four-way valve 4 and then returns to the compressor through the low-pressure switch 5 and the low-pressure sensor 6 to complete circulation of refrigerant. The air absorbs the heat of the refrigerant to become hot air, which is sucked by the fan 15 and blown out into the room, thereby raising the temperature of the room.
For the air conditioner that the internal unit and the external unit can communicate, the external unit can judge whether to need to control the compressor to stop according to parameters acquired by the internal unit, such as indoor environment temperature, but for the communication-free air conditioner unit, as the internal unit and the external unit can not communicate, when the indoor environment temperature reaches the indoor set temperature, the temperature controller sends a shutdown signal to the external unit to control the compressor to shut down, and when the indoor environment temperature is lower than the indoor set temperature, the temperature controller sends a startup signal to the external unit to control the compressor to start. However, in actual use, when the indoor environment temperature fluctuates fast, frequent start and stop of the compressor are extremely easy to cause. Therefore, the control method for the delay shutdown of the heat pump air conditioner without communication control is provided, so that the indoor environment temperature can be reduced in frequency and run for a period of time and then shut down after reaching the set temperature, and the problem of frequent start and stop of a unit is solved.
It should be noted that in one embodiment of the present application, firstly, the shutdown times of the compressor are obtained, when the shutdown times in the preset time are greater than the preset times, the following control method of delayed shutdown is adopted, and when the shutdown times in the preset time are less than the preset times, the shutdown signal is received, so that the shutdown of the compressor is controlled.
In another embodiment, whether the shutdown times are larger than the preset times or not can be controlled according to the scheme of delayed shutdown.
Fig. 2 shows a control method of a communication-free air conditioning unit, namely the control method of time-delay shutdown, specifically, a control method of a communication-free air conditioning unit, which is applied to an external unit, and the method comprises the following steps:
s11: when a shutdown signal sent by a temperature controller is received, controlling the running frequency of the compressor to reduce a preset frequency value; wherein the preset frequency value can be set according to actual needs. When the operation frequency of the compressor is controlled to be reduced, the continuous refrigeration or heating of the unit can be ensured, and the energy consumption can be reduced.
S12: obtaining target parameters according to the shutdown signal type and a unit operation mode, wherein the shutdown signal type comprises a first shutdown signal and a second shutdown signal, the first shutdown signal is a shutdown signal generated when the indoor environment temperature reaches the indoor set temperature, the second shutdown signal is a shutdown signal generated when a user manually shuts down, and the unit operation mode comprises refrigeration operation and heating operation; it can be understood that when the first shutdown signal is sent, the indoor environment temperature reaches the indoor set temperature, and the automatic control is realized; and when the second shutdown signal is sent, the indoor environment temperature does not reach the indoor set temperature, and the control method belongs to manual control of a user.
And if the shutdown signal is a first shutdown signal and the unit operation mode is refrigeration operation, acquiring an initial low pressure value and a current low pressure value (namely, the low pressure value at the current moment) before the operation frequency of the compressor is reduced. The target parameters are the initial low pressure value and the current low pressure value, and the low pressure sensor detects the low pressure value because the low pressure value and the indoor environment temperature are positively correlated when the unit is in refrigeration operation, the lower the indoor environment temperature is, the lower the low pressure value is, so that the change of the indoor environment temperature can be judged according to the change of the low pressure value.
And if the shutdown signal is a first shutdown signal and the unit operation mode is heating operation, acquiring an initial high-pressure value and a current high-pressure value (namely, the high-pressure value at the current moment) before the operation frequency of the compressor is reduced. The target parameters are an initial high-pressure value and a current high-pressure value, and the high-pressure sensor detects the high-pressure value because the high-pressure value and the indoor environment temperature are positively correlated when the unit is in heating operation, and the higher the indoor environment temperature is, the higher the high-pressure value is, so that the change of the indoor environment temperature can be judged according to the change of the high-pressure value.
When the type of the shutdown signal is the second shutdown signal, the initial time and the current time of the shutdown signal sent by the temperature controller are obtained. I.e. the target parameters are the initial time and the current time.
S13: and when the target parameter meets a preset condition, controlling the compressor to be shut down.
In one embodiment, if the shutdown signal is a first shutdown signal and the unit operation mode is a cooling operation, calculating a low pressure difference value between the initial low pressure value and the current low pressure value every a first preset time after the operation frequency of the compressor is reduced; and when the low pressure difference value is larger than a first set pressure value, controlling the compressor to be shut down. When the low pressure difference value is larger than the first set pressure value, the indoor environment temperature is too low, if the compressor continues to operate, the indoor environment temperature continues to drop, and the use experience of a user is affected. Wherein the first preset time and the first set pressure value are set according to actual needs.
And when the low pressure difference value is smaller than a second set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the second set pressure value is smaller than the first set pressure value. When the low pressure difference is smaller than the second set pressure value, the indoor environment temperature and the refrigerating temperature of the unit are smaller, and the running frequency of the compressor is reduced in order to avoid energy waste.
And when the low pressure difference value is larger than or equal to the second set pressure value and smaller than or equal to the first set pressure value, controlling the operation frequency of the compressor to be unchanged. When the low pressure difference value is larger than or equal to the second set pressure value and smaller than or equal to the first set pressure value, at the moment, the indoor environment temperature and the refrigerating temperature of the unit have a certain difference value, but the indoor environment temperature is not too low, so that the running frequency of the compressor is kept at the moment, and the indoor environment temperature can be reduced as soon as possible, namely, the low pressure difference value is larger than the first set pressure value, so that quick shutdown is realized.
In another embodiment, if the shutdown signal is a first shutdown signal and the unit operation mode is heating operation, after the operation frequency of the compressor is reduced, calculating a high pressure difference value between the current high pressure value and the initial high pressure value every second preset time; and when the high pressure difference value is larger than a third set pressure value, controlling the compressor to be shut down. When the high pressure difference value is larger than the third set pressure value, the indoor environment temperature is too high, and if heating is continuously kept, the indoor environment temperature is further increased, so that user experience is affected. The second preset time may be the same as the first preset time in the above embodiment, or may be different from the first preset time, and the specific value is set according to the actual requirement.
And when the high pressure difference value is smaller than a fourth set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the fourth set pressure value is smaller than the third set pressure value. When the high pressure difference is smaller than the fourth set pressure value, the indoor environment temperature and the unit heating temperature are smaller, and in order to avoid energy waste, the operation frequency of the compressor is reduced.
And when the high pressure difference value is larger than or equal to a fourth set pressure value and smaller than or equal to a third set pressure value, controlling the operation frequency of the compressor to be unchanged. When the high pressure difference value is larger than or equal to the fourth set pressure value and smaller than or equal to the third set pressure value, at the moment, the indoor environment temperature and the unit heating temperature have a certain difference value, but the indoor environment temperature is not too high, so that the running frequency of the compressor is kept at the moment, and the indoor environment temperature can be increased as soon as possible, namely, the high pressure difference value is larger than the third set pressure value, so that quick shutdown is realized.
When the type of the shutdown signal is a second shutdown signal, and when the difference value between the current time and the initial time does not exceed the preset duration, if the second shutdown signal sent by the temperature controller again is received, the compressor is controlled to be shut down. When the user is manually powered off, the temperature controller can send a power-off signal to the external machine at the moment, the external machine can enable the compressor to run in a down-frequency mode after receiving the power-off signal, the temperature controller sends the power-off signal to the external machine again after sending the power-off signal for a preset time for the first time, and the external machine controls the compressor to be powered off after receiving the power-off signal for the second time, so that the unit enters a power-off state and waits for the user to start again. The temperature controller sends a secondary shutdown signal to prevent a user from touching a shutdown key by mistake, so that the preset time length is set, and the user can restart in time after finding. At this time, the compressor is not started and stopped frequently because the compressor is not stopped.
Based on the same inventive concept, as shown in fig. 3, an embodiment of the present application provides a control device of a communication-free air conditioning unit, applied to an external unit, the device includes:
the operation frequency control module 31 is configured to control the operation frequency of the compressor to decrease a preset frequency value when receiving a shutdown signal sent by the temperature controller.
The target parameter obtaining module 32 is configured to obtain a target parameter according to the shutdown signal type and a unit operation mode, where the shutdown signal type includes a first shutdown signal and a second shutdown signal, the first shutdown signal is a shutdown signal generated when an indoor environment temperature reaches an indoor set temperature, the second shutdown signal is a shutdown signal generated when a user manually shuts down, and the unit operation mode includes a cooling operation and a heating operation; specifically, if the shutdown signal is a first shutdown signal and the unit operation mode is a cooling operation, the target parameter obtaining module 32 obtains an initial low pressure value and a current low pressure value before the operation frequency of the compressor decreases. If the shutdown signal is a first shutdown signal and the unit operation mode is heating operation, the target parameter acquisition module 32 acquires an initial high pressure value and a current high pressure value before the operation frequency of the compressor is reduced. When the type of the shutdown signal is the second shutdown signal, the target parameter obtaining module 32 obtains the initial time and the current time of receiving the shutdown signal sent by the temperature controller.
A compressor shutdown module 33 for controlling the compressor to shut down when the target parameter satisfies a preset condition.
Specifically, after the operation frequency of the compressor is reduced, calculating a low pressure difference value between the initial low pressure value and the current low pressure value every a first preset time; and when the low pressure difference value is larger than a first set pressure value, controlling the compressor to be shut down. And when the low pressure difference value is smaller than a second set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the second set pressure value is smaller than the first set pressure value. And when the low pressure difference value is larger than or equal to the second set pressure value and smaller than or equal to the first set pressure value, controlling the operation frequency of the compressor to be unchanged.
Or after the operation frequency of the compressor is reduced, calculating a high-pressure difference value between the current high-pressure value and the initial high-pressure value every second preset time; and when the high pressure difference value is larger than a third set pressure value, controlling the compressor to be shut down. And when the high pressure difference value is smaller than a fourth set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the fourth set pressure value is smaller than the third set pressure value. And when the high pressure difference value is larger than or equal to a fourth set pressure value and smaller than or equal to a third set pressure value, controlling the operation frequency of the compressor to be unchanged.
Or when the difference value between the current time and the initial time does not exceed the preset duration, if a second shutdown signal sent again by the temperature controller is received, the compressor is controlled to be shut down.
Embodiments of the present application also provide a computer-readable storage medium, including:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to perform the communication-less air conditioning unit control method of the above-described embodiments.
The embodiment of the application also provides a communication-free air conditioning unit and a control method of the communication-free air conditioning unit.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (14)
1. A method for controlling a communication-free air conditioning unit, which is applied to an external unit, the method comprising:
when a shutdown signal sent by a temperature controller is received, controlling the running frequency of the compressor to reduce a preset frequency value;
obtaining target parameters according to the shutdown signal type and a unit operation mode, wherein the shutdown signal type comprises a first shutdown signal and a second shutdown signal, the first shutdown signal is a shutdown signal generated when the indoor environment temperature reaches the indoor set temperature, the second shutdown signal is a shutdown signal generated when a user manually shuts down, and the unit operation mode comprises refrigeration operation and heating operation;
and when the target parameter meets a preset condition, controlling the compressor to be shut down.
2. The method according to claim 1, characterized in that: the obtaining the target parameter according to the shutdown signal type and the unit operation mode includes:
and if the shutdown signal is a first shutdown signal and the unit operation mode is refrigeration operation, acquiring an initial low pressure value and a current low pressure value before the operation frequency of the compressor is reduced.
3. The method according to claim 2, characterized in that: and when the target parameter meets the preset condition, controlling the compressor to be shut down, including:
when the operation frequency of the compressor is reduced, calculating a low pressure difference value between the initial low pressure value and the current low pressure value at intervals of a first preset time;
and when the low pressure difference value is larger than a first set pressure value, controlling the compressor to be shut down.
4. A method according to claim 3, further comprising:
and when the low pressure difference value is smaller than a second set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the second set pressure value is smaller than the first set pressure value.
5. The method as recited in claim 4, further comprising:
and when the low pressure difference value is larger than or equal to the second set pressure value and smaller than or equal to the first set pressure value, controlling the operation frequency of the compressor to be unchanged.
6. The method according to claim 1, characterized in that: the obtaining the target parameter according to the shutdown signal type and the unit operation mode includes:
and if the shutdown signal is a first shutdown signal and the unit operation mode is heating operation, acquiring an initial high-pressure value and a current high-pressure value before the operation frequency of the compressor is reduced.
7. The method according to claim 6, wherein: and when the target parameter meets the preset condition, controlling the compressor to be shut down, including:
when the operation frequency of the compressor is reduced, calculating a high-pressure difference value between the current high-pressure value and the initial high-pressure value every second preset time;
and when the high pressure difference value is larger than a third set pressure value, controlling the compressor to be shut down.
8. The method as recited in claim 7, further comprising:
and when the high pressure difference value is smaller than a fourth set pressure value, controlling the operation frequency of the compressor to be reduced by a preset frequency value again, wherein the fourth set pressure value is smaller than the third set pressure value.
9. The method as recited in claim 8, further comprising:
and when the high pressure difference value is larger than or equal to a fourth set pressure value and smaller than or equal to a third set pressure value, controlling the operation frequency of the compressor to be unchanged.
10. The method according to claim 1, characterized in that: the obtaining the target parameter according to the shutdown signal type and the unit operation mode includes:
when the type of the shutdown signal is the second shutdown signal, the initial time and the current time of the shutdown signal sent by the temperature controller are obtained.
11. The method according to claim 10, wherein: and when the target parameter meets the preset condition, controlling the compressor to be shut down, including:
and when the difference value between the current time and the initial time does not exceed the preset duration, if a second shutdown signal sent again by the temperature controller is received, controlling the compressor to shutdown.
12. A communication-free air conditioning unit control device, characterized by being applied to an external machine, the device comprising:
the operation frequency control module is used for controlling the operation frequency of the compressor to reduce a preset frequency value when receiving a shutdown signal sent by the temperature controller;
the target parameter acquisition module is used for acquiring target parameters according to the shutdown signal type and a unit operation mode, wherein the shutdown signal type comprises a first shutdown signal and a second shutdown signal, the first shutdown signal is a shutdown signal generated when the indoor environment temperature reaches the indoor set temperature, the second shutdown signal is a shutdown signal generated when a user manually shuts down, and the unit operation mode comprises refrigeration operation and heating operation;
and the compressor shutdown module is used for controlling the compressor to be shut down when the target parameters meet preset conditions.
13. A computer-readable storage medium, comprising:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to perform the method of any of claims 1-11.
14. A telecommunications-free air conditioning unit, characterized in that the method according to any one of claims 1 to 11 is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311697454.4A CN117387182B (en) | 2023-12-12 | 2023-12-12 | Control method and device for communication-free air conditioning unit, medium and unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311697454.4A CN117387182B (en) | 2023-12-12 | 2023-12-12 | Control method and device for communication-free air conditioning unit, medium and unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117387182A true CN117387182A (en) | 2024-01-12 |
| CN117387182B CN117387182B (en) | 2024-04-09 |
Family
ID=89441409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311697454.4A Active CN117387182B (en) | 2023-12-12 | 2023-12-12 | Control method and device for communication-free air conditioning unit, medium and unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117387182B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010004761A (en) * | 1999-06-29 | 2001-01-15 | 윤종용 | Frequency control method of a compressor for an inverter air conditioner |
| CN110671776A (en) * | 2019-09-23 | 2020-01-10 | 珠海格力电器股份有限公司 | Method, device and equipment for controlling outdoor unit of non-communication air conditioning unit and storage medium |
| CN111578472A (en) * | 2020-05-29 | 2020-08-25 | 广东美的制冷设备有限公司 | Control method and device of air conditioner outdoor unit, air conditioner outdoor unit and air conditioner |
-
2023
- 2023-12-12 CN CN202311697454.4A patent/CN117387182B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010004761A (en) * | 1999-06-29 | 2001-01-15 | 윤종용 | Frequency control method of a compressor for an inverter air conditioner |
| CN110671776A (en) * | 2019-09-23 | 2020-01-10 | 珠海格力电器股份有限公司 | Method, device and equipment for controlling outdoor unit of non-communication air conditioning unit and storage medium |
| CN111578472A (en) * | 2020-05-29 | 2020-08-25 | 广东美的制冷设备有限公司 | Control method and device of air conditioner outdoor unit, air conditioner outdoor unit and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117387182B (en) | 2024-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108731224B (en) | Control method, device and equipment of fixed-frequency air conditioning system and fixed-frequency air conditioning system | |
| CN111780362B (en) | Air conditioner and control method thereof | |
| JP2017067301A (en) | Air conditioning device | |
| AU2017408715B2 (en) | Outdoor unit of air-conditioning apparatus | |
| CN105627515A (en) | Air conditioner control method, device and air conditioner | |
| KR20190016261A (en) | Heat pump and Method for controlling the same | |
| CN104930770A (en) | Defrosting method and defrosting device of heat pump air conditioner | |
| WO2015191553A1 (en) | System and method for controlling a variable-capacity compressor | |
| CN113883681A (en) | Control method for refrigeration system and refrigeration system | |
| CN204665584U (en) | A kind of heat pump air conditioner defrosting device | |
| CN117387182B (en) | Control method and device for communication-free air conditioning unit, medium and unit | |
| WO2019171463A1 (en) | Air conditioning device | |
| CN110017580B (en) | Fan coil and cold and heat source equipment mode interlocking control method and device and air conditioner | |
| JP6537641B2 (en) | Hot and cold air conditioning system | |
| JP6428221B2 (en) | Air conditioner | |
| CN108692425B (en) | Defrosting control method for air conditioner | |
| CN114234468B (en) | Heat pump device control method, device, unit, computer equipment and storage medium | |
| CN113091207B (en) | Air return port blockage judging method and device and air conditioner | |
| JP2019095138A (en) | Air conditioner and refrigeration device | |
| CN114857663A (en) | Air conditioning system and control method thereof | |
| EP3026364B1 (en) | Heat pump type heating and hot water supply apparatus | |
| KR100488010B1 (en) | Control method of Airconditioner | |
| CN114322220A (en) | Air conditioning device and control method thereof | |
| CN109790984B (en) | System for air conditioning and hot water supply | |
| CN113280485A (en) | Air conditioner sterilization control method and device and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |