CN112539522A - Main control program of air conditioner outdoor unit and control method for identifying compressor - Google Patents
Main control program of air conditioner outdoor unit and control method for identifying compressor Download PDFInfo
- Publication number
- CN112539522A CN112539522A CN202011536594.XA CN202011536594A CN112539522A CN 112539522 A CN112539522 A CN 112539522A CN 202011536594 A CN202011536594 A CN 202011536594A CN 112539522 A CN112539522 A CN 112539522A
- Authority
- CN
- China
- Prior art keywords
- compressor
- outdoor unit
- main control
- program
- driving
- 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
Images
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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- 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
- F24F11/38—Failure diagnosis
-
- 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
- F24F11/56—Remote control
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A main control program of an air conditioner outdoor unit and a control method for identifying a compressor are provided. Generally, in a multi-split air conditioner, a plurality of outdoor units of different models exist in the same series of multi-split air conditioners, and the models and the number of variable frequency compressors of the outdoor units of each model are different. When the inverter compressor adopts wrong driving software or hardware, the inverter compressor continues to operate without reporting faults, and if the inverter compressor operates for a long time, the output capacity of the compressor is possibly influenced to meet the requirement. The present invention determines the model number of the outdoor unit program and the model number of the compressor program by inputting through the steps S1 and S2, respectively; checking whether there is an error in the model number of the compressor program determined by the input through steps S3 and S4, thereby ensuring that the software part setting is correct; checking whether the model of the connected compressor is wrong or not through step S5 to ensure that the hardware part is correctly set; the correct number of drive modules is ensured by S1 and S3.
Description
Technical Field
The invention relates to the technical field of air conditioner outdoor units, in particular to a main control program of an air conditioner outdoor unit and a control method for identifying a compressor.
Background
Generally, in a multi-split air conditioner, a plurality of outdoor units of different models exist in the same series of multi-split air conditioners, and the models and the number of variable frequency compressors of the outdoor units of each model are different. Each inverter compressor requires an inverter drive module to drive the operation of the compressor, wherein the drive module is divided into hardware and software components. The electronic control hardware of the variable frequency drive may be the same between different variable frequency compressors, while the software of the drive program is different. When the inverter compressor adopts wrong driving software or hardware, the inverter compressor continues to operate without reporting faults, and if the inverter compressor operates for a long time, the output capacity of the compressor is possibly influenced to meet the requirements, and even the compressor is damaged and burnt.
Disclosure of Invention
In view of the disadvantages of the prior art, an object of the present invention is to provide a main control program for an outdoor unit of an air conditioner and a control method for identifying a compressor.
In order to achieve the above object, the present invention provides a method for controlling a main control program, a compressor driver and a compressor identification of an outdoor unit of an inverter air conditioner, which is characterized in that: a master control program of an outdoor unit of a variable frequency air conditioner comprises an outdoor unit master control module and a plurality of driving modules for controlling a compressor, wherein the plurality of driving modules are connected to the outdoor unit master control module through a plurality of communication channels respectively; each driving module is connected with a compressor; the outdoor unit main control module comprises a plurality of outdoor unit programs with different models, and one outdoor unit program comprises a plurality of compressor programs for controlling the compressors, wherein the outdoor unit main control module is provided with an outdoor dial device, and the outdoor unit main control module determines the model of the outdoor unit program to be operated by inputting a first code into the outdoor dial device; the driving module is provided with a driving dial-up device, wherein a second code is input into the driving dial-up device to enable the driving module to confirm the type of a compressor program to be operated; the control method comprises the following steps:
step S1: after an outdoor unit system is electrified, inputting a first code into the outdoor dial-up device, and then respectively sending the first code to the plurality of driving modules by the outdoor unit main control module through the plurality of communication channels;
step S2: inputting a second code into the driving dial device, and then sending the second code to the outdoor unit main control module by the driving module when the driving module receives the first code;
step S3: the outdoor unit main control module judges after receiving the second code, and if the type of the compressor program represented by the second code is included in the compressor programs included in the outdoor unit program currently operated by the outdoor unit main control module, the outdoor unit main control module keeps opening the communication channel connected with the driving module in S2; otherwise, if not, closing the corresponding communication channel, and the outdoor unit main control module reporting a fault to prompt that a code in the supply instruction is wrong;
step S4: if each communication channel can be kept open after the outdoor unit main control module and each driving module correspondingly connected with the outdoor unit main control module are finished in S2 and S3, starting the compressor; on the contrary, if one communication channel is closed, the compressor is kept to be shut down;
step S5: when the compressor is started, each driving module detects the type of the corresponding connected compressor, and if the type of one compressor is different from the type of the compressor program confirmed by the corresponding driving template, the compressor stops running; and otherwise, if the model of each compressor is the same as the model of the compressor program confirmed by the corresponding driving template, enabling the compressor to normally start to operate. .
Further, different first codes are input into the outdoor dial device to determine the models of the outdoor units.
Further, the different models of the programs of the compressors are determined by inputting different second codes into the drive dial device.
Furthermore, the driving module is connected with the compressor case through a three-phase power line.
Further, the driving module is preset with a driving chip.
Further, the driving module detects the model of the compressor through the three-phase power line and the driving chip.
Further, in step S1, after the outdoor unit main control module determines the model of the outdoor unit program that needs to be run through the first code, the outdoor unit main control module presets the same number of communication ports according to the number of compressor programs included in the outdoor unit program of the current model.
Further, the communication port is connected with a communication channel.
Further, the outdoor unit main control module closes/opens the communication channels correspondingly connected by closing/opening the communication ports.
Further, in step S3, the outdoor unit main control module needs to detect the number of the driving modules after receiving the second code, and if the number of the driving modules is the same as the number of the compressor programs included in the outdoor unit program of the current model, the outdoor unit main control module continues to perform the determination in step S3; otherwise, if the difference is not the same, the compressor keeps turning off, and the operation of the outdoor unit main control module is stopped.
The invention has the beneficial effects that: determining a model number of an outdoor unit program and a model number of a compressor program by inputting through step S1 and step S2, respectively; checking whether there is an error in the model number of the compressor program determined by the input through steps S3 and S4, thereby ensuring that the software part setting is correct; checking whether the model of the connected compressor is wrong or not through step S5 to ensure that the hardware part is correctly set; the correct number of the driving modules is guaranteed through the S1 and the S3, and therefore the reliability of the multi-split air conditioner is improved.
Drawings
Fig. 1 is a schematic diagram of a main control procedure of an outdoor unit of an air conditioner according to a first embodiment.
Fig. 2 is a flowchart of the control method.
Fig. 3 is a schematic diagram of a main control procedure of an outdoor unit of an air conditioner according to a second embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.
The first embodiment is as follows:
referring to fig. 1, in this embodiment, a main control program of an air conditioner outdoor unit includes an outdoor unit main control module and two driving modules for controlling a compressor, where the two driving modules are connected to the outdoor unit main control module through communication channels, respectively; each driving module is connected with a compressor through a three-phase power line. The outdoor unit main control module is provided with an outdoor dial device, and the outdoor unit main control module is enabled to determine the model of an outdoor unit program to be operated by inputting a first code into the outdoor dial device.
Referring to fig. 2, in the present embodiment, the control method includes the following steps:
step S1: after the outdoor unit main control module is electrically operated on the outdoor unit, a first code is input into the outdoor dial device, the outdoor unit main control module determines that the model of an outdoor unit program needing to be operated is 001, wherein the outdoor unit program 001 contains an A compressor program and a B compressor program, the outdoor unit main control module determines that the number of the compressor programs contained in the outdoor unit program 001 is two, two communication interfaces are preset by the outdoor unit main control module for connecting communication channels, and then the outdoor unit main control module respectively sends the first code to the two driving modules through the two communication channels to find the models of the compressor programs of the two driving modules. In this embodiment, the outdoor unit main control module closes/opens the communication channel by closing/opening the communication port.
Step S2: and inputting a second code into a drive dial device, enabling a drive module to determine the model of a compressor program to be operated, and then enabling the drive module to send the second code to the outdoor unit main control module so as to feed back the model of the compressor program which can be provided by the drive module to the outdoor unit main control module.
Step S3: the outdoor unit main control module judges after receiving the second code: if the model of the compressor program represented by the second code is included in the compressor program included in the outdoor unit program currently determined to be operated by the outdoor unit main control module, that is, the model of the compressor program represented by the second code is one of the compressor program a and the compressor program B, which indicates that the matching between the driving module in S2 and the outdoor unit program 001 currently operated by the outdoor unit main control module is successful, the communication channel corresponding to the driving module in S2 is kept open. If the model of the compressor program represented by the second code is not included in the compressor program included in the outdoor unit program currently determined to be operated by the outdoor unit main control module, which indicates that the second code in S2 is input incorrectly, the corresponding communication channel is closed, and meanwhile, the outdoor unit main control module reports a fault to prompt that the code in the supply instruction is incorrect.
Step S4: if the two driving modules are successfully matched with the currently operated No. 001 outdoor unit program of the outdoor unit main control module after passing through S2 and S3, namely, the requirements of the compressor programs of the two driving modules are respectively determined to be the No. A compressor program and the No. B compressor program, so that the communication channels corresponding to the two driving modules are kept open, the outdoor unit main control module respectively operates the No. A compressor program and the No. B compressor program through the two driving modules, and the software part is correctly set, so that the two compressors are started; otherwise, if a communication channel exists between the communication channels corresponding to the two driving modules and is closed, that is, the compressor is kept turned off, and the corresponding driving module is re-operated S2 and S3.
Step S5: when the compressor is started, each driving module detects the type of the corresponding connected compressor through a preset driving chip and a three-phase power line, if the type of each compressor is detected to be the same as the type of a compressor program confirmed by a corresponding driving template, namely, if the driving module running the A compressor program is connected with the A compressor, the driving module running the B compressor program is connected with the B compressor, and the setting of a hardware part is correct, the compressor is normally started to run; otherwise, if the model of any one compressor is detected to be different from the model of the compressor program confirmed by the corresponding driving template, the operation of the compressor is stopped.
Example two:
referring to fig. 3, a difference between the present embodiment and the first embodiment is that a main control program of an outdoor unit of a variable frequency air conditioner includes an outdoor unit main control module and a driving module, where the outdoor unit main control module determines to run a No. 001 outdoor unit program and has two preset communication ports; the driver module determines the compressor program number a that needs to be run in step S2. When step S3 is executed, if the outdoor unit main control module detects that the drive module is connected to the compressor program No. a only, the compressor is kept off, and the operation of the outdoor unit main control module is stopped. At this time, an additional driving module needs to be connected for setting the compressor program of the model B, and then the outdoor main control module is enabled to operate from the step S1 again, so as to ensure that the number of the driving modules is the same as the number of the compressor programs included in the outdoor unit program of the current model.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the invention without departing from the scope of the invention as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.
Claims (10)
1. A master control program of an air conditioner outdoor unit and a control method for identifying a compressor are characterized in that: a master control program of an outdoor unit of a variable frequency air conditioner comprises an outdoor unit master control module and a plurality of driving modules for controlling a compressor, wherein the plurality of driving modules are connected to the outdoor unit master control module through a plurality of communication channels respectively; each driving module is connected with a compressor; the outdoor unit main control module comprises a plurality of outdoor unit programs with different models, and one outdoor unit program comprises a plurality of compressor programs for controlling the compressors, wherein the outdoor unit main control module is provided with an outdoor dial device, and the outdoor unit main control module determines the model of the outdoor unit program to be operated by inputting a first code into the outdoor dial device; the driving module is provided with a driving dial-up device, wherein a second code is input into the driving dial-up device to enable the driving module to confirm the type of a compressor program to be operated; the control method comprises the following steps:
step S1: after an outdoor unit system is electrified, inputting a first code into the outdoor dial-up device, and then respectively sending the first code to the plurality of driving modules by the outdoor unit main control module through the plurality of communication channels;
step S2: inputting a second code into the driving dial device, and then sending the second code to the outdoor unit main control module by the driving module when the driving module receives the first code;
step S3: the outdoor unit main control module judges after receiving the second code, and if the type of the compressor program represented by the second code is included in the compressor programs included in the outdoor unit program currently operated by the outdoor unit main control module, the outdoor unit main control module keeps opening the communication channel connected with the driving module in S2; otherwise, if not, closing the corresponding communication channel, and the outdoor unit main control module reporting a fault to prompt that a code in the supply instruction is wrong;
step S4: if each communication channel can be kept open after the outdoor unit main control module and each driving module correspondingly connected with the outdoor unit main control module are finished in S2 and S3, starting the compressor; on the contrary, if one communication channel is closed, the compressor is kept to be shut down;
step S5: when the compressor is started, each driving module detects the type of the corresponding connected compressor, and if the type of one compressor is different from the type of the compressor program confirmed by the corresponding driving template, the compressor stops running; and otherwise, if the model of each compressor is the same as the model of the compressor program confirmed by the corresponding driving template, enabling the compressor to normally start to operate.
2. The main control program of the outdoor unit of the air conditioner and the control method for identifying the compressor of claim 1, wherein: and determining the models of the outdoor units by inputting different first codes into the outdoor dial-up device.
3. The main control program of the outdoor unit of the air conditioner and the control method for identifying the compressor of claim 1, wherein: the different compressor program models are determined by entering different second codes into the drive dial.
4. The main control program of the outdoor unit of the air conditioner and the control method for identifying the compressor of claim 1, wherein: the driving module is connected with the compressor case through a three-phase power line.
5. The main control program of the outdoor unit of the air conditioner and the control method for identifying the compressor of claim 1, wherein: the driving module is preset with a driving chip.
6. The main control program of the outdoor unit of an air conditioner and the control method for identifying the compressor of claim 4 or 5, wherein: the driving module obtains the model of the compressor through the detection of the three-phase power line and the driving chip.
7. The main control program of the outdoor unit of the air conditioner and the control method for identifying the compressor of claim 1, wherein: in step S1, after the outdoor unit main control module determines the model of the outdoor unit program that needs to be run through the first code, the outdoor unit main control module presets the same number of communication ports according to the number of compressor programs included in the outdoor unit program of the current model.
8. The main control program of the outdoor unit of an air conditioner and the control method for identifying the compressor of claim 7, wherein: the communication port is connected with the communication channel.
9. The main control program of the outdoor unit of an air conditioner and the control method for identifying the compressor of claim 7, wherein: and the outdoor unit main control module closes/opens the communication channel correspondingly connected by closing/opening the communication port.
10. The main control program of the outdoor unit of the air conditioner and the control method for identifying the compressor of claim 1, wherein: in step S3, the outdoor unit main control module needs to detect the number of the driving modules after receiving the second code, and if the number of the driving modules is the same as the number of the compressor programs included in the outdoor unit program of the current model, the outdoor unit main control module continues to perform the determination in step S3; otherwise, if the difference is not the same, the compressor keeps turning off, and the operation of the outdoor unit main control module is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011536594.XA CN112539522B (en) | 2020-12-23 | 2020-12-23 | Main control program of air conditioner outdoor unit and control method for identifying compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011536594.XA CN112539522B (en) | 2020-12-23 | 2020-12-23 | Main control program of air conditioner outdoor unit and control method for identifying compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112539522A true CN112539522A (en) | 2021-03-23 |
| CN112539522B CN112539522B (en) | 2022-01-04 |
Family
ID=75017626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011536594.XA Active CN112539522B (en) | 2020-12-23 | 2020-12-23 | Main control program of air conditioner outdoor unit and control method for identifying compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112539522B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090585A (en) * | 2001-09-20 | 2003-03-28 | Fujitsu General Ltd | Setting method for refrigerant system address for air conditioner |
| CN1892029A (en) * | 2005-04-26 | 2007-01-10 | 谷轮公司 | Compressor memory system, compressor information network, and warranty administration method |
| CN105156315A (en) * | 2015-08-04 | 2015-12-16 | 广东美的暖通设备有限公司 | Detection system, device and method for multiple compressors |
| CN108488914A (en) * | 2018-04-13 | 2018-09-04 | 珠海格力电器股份有限公司 | Air-conditioner set, the operating method of air-conditioner set and device |
| CN110094332A (en) * | 2019-05-10 | 2019-08-06 | 珠海格力电器股份有限公司 | Compressor automatic addressing control method, device and multi-compressor system |
| CN212132819U (en) * | 2020-06-02 | 2020-12-11 | 珠海格力电器股份有限公司 | Air conditioner controller and air conditioner |
-
2020
- 2020-12-23 CN CN202011536594.XA patent/CN112539522B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090585A (en) * | 2001-09-20 | 2003-03-28 | Fujitsu General Ltd | Setting method for refrigerant system address for air conditioner |
| CN1892029A (en) * | 2005-04-26 | 2007-01-10 | 谷轮公司 | Compressor memory system, compressor information network, and warranty administration method |
| CN105156315A (en) * | 2015-08-04 | 2015-12-16 | 广东美的暖通设备有限公司 | Detection system, device and method for multiple compressors |
| CN108488914A (en) * | 2018-04-13 | 2018-09-04 | 珠海格力电器股份有限公司 | Air-conditioner set, the operating method of air-conditioner set and device |
| CN110094332A (en) * | 2019-05-10 | 2019-08-06 | 珠海格力电器股份有限公司 | Compressor automatic addressing control method, device and multi-compressor system |
| CN212132819U (en) * | 2020-06-02 | 2020-12-11 | 珠海格力电器股份有限公司 | Air conditioner controller and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112539522B (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070208461A1 (en) | Hvac control with programmed run-test sequence | |
| CN106152415B (en) | The fault determination method and device of air-conditioning system connection wiring | |
| JPS581584B2 (en) | Data communication loop method | |
| CN105509224A (en) | Automatic matching method for indoor unit and outdoor unit compressors | |
| CN202735841U (en) | Automatic detection device for air conditioner indoor unit control board | |
| CN112539522B (en) | Main control program of air conditioner outdoor unit and control method for identifying compressor | |
| CN113154523A (en) | Multi-split air conditioning system communication fault detection method and device and multi-split air conditioning system | |
| US20180017280A1 (en) | Air-conditioning system | |
| CN108431516A (en) | Air conditioner | |
| CN104613599A (en) | Method and device for judging connected relation and multi-split air conditioner | |
| CN110686359B (en) | Fault diagnosis method for variable frequency air conditioner | |
| CN110173802A (en) | Air conditioner and its communication control method, device and electronic equipment | |
| EP2816296A1 (en) | Air conditioner | |
| US11536264B2 (en) | Gas compressor | |
| CN108870641B (en) | Drive fault detection method and device and air conditioner | |
| CN111594466A (en) | Intelligent fan with compatible interface and control device thereof | |
| CN108151256B (en) | Double-fan single-opening detection control method and device for air conditioner outdoor unit | |
| CN115116385B (en) | Display system and display control method thereof | |
| CN111664543A (en) | Air conditioner and control method thereof | |
| CN110686358B (en) | Variable frequency air conditioner fault diagnosis method based on detection tool | |
| CN105091193A (en) | Inverter compressor operating frequency adjusting method and device, and inverter air conditioner system | |
| CN104198203A (en) | Method and device for detecting operation of air-conditioners | |
| CN105091195A (en) | Inverter compressor operating frequency adjusting method and device, and inverter air conditioner system | |
| CN112557738A (en) | Voltage detection device, air conditioning system, voltage detection method, and readable storage medium | |
| JPH07133950A (en) | Signal transmission circuit of 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 |