CN106052007B - Electrical box and air conditioning system - Google Patents
Electrical box and air conditioning system Download PDFInfo
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- CN106052007B CN106052007B CN201610335254.8A CN201610335254A CN106052007B CN 106052007 B CN106052007 B CN 106052007B CN 201610335254 A CN201610335254 A CN 201610335254A CN 106052007 B CN106052007 B CN 106052007B
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- board
- main control
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- air conditioning
- conditioning system
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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
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses an electric appliance box and an air conditioning system. Wherein, this electrical apparatus box is applied to air conditioning system, includes: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board is provided with a primary filter circuit, the primary filter board is connected with the drive board and the main control board, the PLC module is connected with the power supply, and the power supply supplies power to the drive board and the main control board after being filtered by the primary filter circuit. The invention solves the technical problems that the engineering wiring complexity and the wire cost are increased due to the fact that power supplies and communication signals are transmitted in different lines in the communication network of the air conditioning system in the related technology.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an electric appliance box and an air conditioning system.
Background
The PLC technology is a power line carrier communication technology, and the technology can realize collinear transmission of power and communication signals and reduce the wiring complexity and the wire cost of engineering. In recent years, the power line carrier communication technology is rapidly developed, and the technology is widely applied to the fields of meter reading, street lamp control, industrial control and the like.
At present, in a communication network of an air conditioning system, power supply and communication signals are transmitted in a different line, namely, a power line and a signal line are separated, so that the wiring complexity of engineering and the cost of wires are increased.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides an electric appliance box and an air conditioning system, and at least solves the technical problems that the engineering wiring complexity and the wire cost are increased due to the fact that power supplies and communication signals are transmitted in an out-of-line mode in a communication network of the air conditioning system in the related technology.
According to an aspect of an embodiment of the present invention, there is provided an electrical box applied to an air conditioning system, including: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board is provided with a primary filter circuit, the primary filter board is connected with the drive board and the main control board, the PLC module is connected with a power supply, and the power supply supplies power to the drive board and the main control board after being filtered by the primary filter circuit.
Further, the PLC module is connected with the power supply through an interface of the reverse protector.
Furthermore, the electrical box is also provided with a secondary filter circuit for filtering the input signal of the main control board.
Further, the second-stage filter circuit is arranged on the main control board.
Further, above-mentioned second grade filter circuit sets up on second grade filter plate, and above-mentioned second grade filter plate is connected between above-mentioned first grade filter plate and above-mentioned main control board.
Further, the electrical box comprises an upper electrical box and a lower electrical box, wherein the main control board and the secondary filter board are installed in the upper electrical box; the fan board, the drive board and the first-stage filter board are arranged in the lower-layer electric appliance box.
Further, the air conditioning system comprises a multi-split air conditioning system, and the electrical box is arranged in the multi-split air conditioning system.
According to an aspect of the embodiments of the present invention, there is provided another electrical box for an air conditioning system, including: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board is provided with a primary filter circuit, the primary filter board is connected with the drive board and the main control board, the PLC module is connected with the primary filter circuit, and the power supply supplies power to the drive board and the main control board after being filtered by the primary filter circuit.
According to another aspect of the embodiments of the present invention, there is also provided an air conditioning system including: the multi-split air conditioning system is provided with any one of the electric appliance boxes.
Further, the multi-split air conditioner comprises a plurality of sets, and each set of the multi-split air conditioner system is connected to a power supply through an electric meter.
In the embodiment of the present invention, a PLC module is used to control an air conditioning system, and an electrical box applied to the air conditioning system is provided, and the electrical box includes: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board, be provided with primary filter circuit on it, the primary filter board is connected with the drive plate, and be connected with the main control board, the PLC module is connected with the power, the power supplies power to drive plate and main control board after the filtering of primary filter circuit, the purpose of using PLC technical control air conditioning system has been reached, because power signal and communication signal collineation transmission in the PLC technique, thereby realized the engineering wiring complexity that alleviates air conditioning system's communication network and the technological effect of wire rod cost, and then the communication network of air conditioning system has solved among the correlation technique because power and communication signal off-line transmission and the increase engineering wiring complexity and the technical problem of wire rod cost that cause.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of an alternative air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic view of an alternative appliance box according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an internal layout of an alternative appliance box according to an embodiment of the present invention;
FIG. 4 is a schematic view of another alternative appliance box according to embodiments of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided an apparatus embodiment of an air conditioning system.
Fig. 1 is a schematic diagram of an alternative air conditioning system according to an embodiment of the present invention, as shown in fig. 1, the system comprising: one or more sets of multi-split air conditioning systems, for example, as shown in fig. 1, are a multi-split air conditioning system 1, a multi-split air conditioning system 2, … …, and a multi-split air conditioning system n, each set of multi-split air conditioning system includes one or more air conditioners (such as air conditioner 1, air conditioner 2, … …, and air conditioner n), and each set of multi-split air conditioning system is provided with an electrical box (not shown).
Wherein, every electrical apparatus box all includes: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board is provided with a primary filter circuit, the primary filter board is connected with the drive board and the main control board, the PLC module is connected with the power supply, and the power supply supplies power to the drive board and the main control board after being filtered by the primary filter circuit. Optionally, the PLC module is connected to the power supply through an interface of the reverse protector. Optionally, the electrical box further includes a second-stage filter circuit for filtering an input signal of the main control board. Optionally, the second-stage filter circuit is disposed on the main control board. Optionally, the second-stage filter circuit is arranged on a second-stage filter plate, and the second-stage filter plate is connected between the first-stage filter plate and the main control plate. Optionally, the electrical box comprises an upper electrical box and a lower electrical box, wherein the main control board and the secondary filter board are installed in the upper electrical box; the fan plate, the drive plate and the secondary filter plate are arranged in the lower-layer electric appliance box. Optionally, the air conditioning system includes a multi-split air conditioning system, and the electrical box is disposed in the multi-split air conditioning system.
Optionally, in the electrical box, the PLC module may be connected to the first-stage filter circuit instead of being directly connected to the power supply, that is, the electrical box may include: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board is provided with a primary filter circuit, the primary filter board is connected with the drive board and the main control board, the PLC module is connected with the primary filter circuit, and the power supply supplies power to the drive board and the main control board after being filtered by the primary filter circuit.
It should be noted that the structure of the electrical box and the layout of each circuit board thereof will be described in detail in embodiments 2 and 3, and will not be described herein.
Alternatively, as shown in fig. 1, the multi-split air conditioner includes a plurality of sets, and each set of the multi-split air conditioner system is connected to the power supply through an electric meter (e.g., the multi-split air conditioner system 1 is connected to the power supply through an electric meter 1, the multi-split air conditioner system 2 is connected to the power supply through an electric meter 2, … …, and the multi-split air conditioner system n is connected to the power supply through an electric meter n). The multi-split air conditioning system can be a commercial multi-split air conditioning system and is applied to areas such as large-scale shopping malls and office buildings. Generally, a large area is provided with a plurality of sets of multi-split air conditioning systems. Because the PLC signals are transmitted by the power lines, in a network of a plurality of different multi-split air-conditioning systems, the PLC signals of all the multi-split air-conditioning systems are transmitted by the power lines, so that the PLC signals can interfere with each other and influence each other. In order to prevent mutual interference between multi-split air conditioning systems, the PLC technology used in the meter reading field distinguishes different users through the ammeter, and the ammeter for isolating different sets of multi-split air conditioning systems is arranged, so that each set of multi-split air conditioning system is connected to a power supply through an independent ammeter, such as a mains supply. That is, in the multi-connected air conditioning system using the PLC technology, the power line of each set of the multi-connected air conditioning system must be installed only through the same electric meter, as shown in fig. 1.
According to the embodiment of the invention, when the multi-connected air-conditioning systems are installed, each multi-connected air-conditioning system is connected to the power supply through the same ammeter, so that the mutual influence of signals in the transmission process is eliminated, the mutual interference among different sets of multi-connected air-conditioning systems is avoided, and the normal communication of the multi-connected air-conditioning systems can be ensured.
Example 2
According to an embodiment of the present invention, an apparatus embodiment of an electrical box is provided.
Fig. 2 is a schematic view of an alternative electrical box according to an embodiment of the present invention, as shown in fig. 2, which is applied to an air conditioning system, and includes: a fan plate 202; the driving board 204 is provided with a driving circuit, the driving board 204 is connected with the fan board 202, and the driving circuit is used for driving the fan board 202 to move; the main control board 206 is provided with a PLC module 2062, and the PLC module 2062 is used for controlling the driving of the driving circuit; first order filter board 208 is provided with first order filter circuit on it, and first order filter board 208 is connected with drive plate 204, and is connected with main control board 206, and the PLC module is connected with power 210, and power 210 supplies power to drive plate 204 and main control board 206 after the filtering of first order filter circuit.
On one hand, the PLC signals are transmitted through the power line, namely, the communication signals of the PLC are transmitted with the power supply in a collinear way, so that the wiring complexity of engineering and the wire cost are reduced. On the other hand, the power (such as commercial power) need supply power for each circuit board block inside the electrical box after first order filter board 208, and PLC module 2062 sets up on main control board 206, its signal is via power cord transmission, therefore also must be through first order filter board 208 filtering, and the bandwidth scope of PLC technique is 2-30MHZ, the signal can be weakened after the filtering, lead to unable normal transmission, and not through any filtering with the PLC module, directly be connected with power 210, can avoid the PLC signal to be weakened because of the filtering, thereby can guarantee its normal transmission.
According to the embodiment of the invention, the mode of controlling the air conditioning system by the PLC module is adopted, and the electric appliance box applied to the air conditioning system is arranged and comprises the following components: a fan plate; the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move; the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit; the primary filter board, be provided with primary filter circuit on it, the primary filter board is connected with the drive plate, and be connected with the main control board, the PLC module is connected with the power, the power supplies power to drive plate and main control board after the filtering of primary filter circuit, the purpose of using PLC technical control air conditioning system has been reached, because power signal and communication signal collineation transmission in the PLC technique, thereby realized the engineering wiring complexity that alleviates air conditioning system's communication network and the technological effect of wire rod cost, and then the communication network of air conditioning system has solved among the correlation technique because power and communication signal off-line transmission and the increase engineering wiring complexity and the technical problem of wire rod cost that cause.
Considering the influence of first-stage filter board, optionally, above-mentioned PLC module is connected with the power through the interface that lacks reverse protector, directly makes the PLC module get the electricity from the main control board interface that lacks reverse protector promptly. The interface is not filtered, extra wiring is not needed, the filtering effect is not affected, and wiring of the PCB is slightly changed on the main control board.
Considering that the power signal filtered by the first-stage filter board can reach the main control board only through a certain routing during installation, at the moment, if the filtered power signal is directly accessed into the main control board, a certain interference signal can be introduced. In order to avoid introducing the interference signal, optionally, a secondary filter circuit may be further disposed in the electrical box, and configured to filter an input signal of the main control board.
Optionally, the secondary filter circuit may be disposed on the main control board, or may be disposed on the secondary filter board 212, as shown in fig. 2, if the secondary filter board 212 is disposed on the primary filter board 212, the secondary filter board 212 is connected between the primary filter board 208 and the main control board 206.
According to actual test, the PLC carrier signal can not be attenuated generally when reaching more than 1m from the filter device, 10dB of attenuation can be generated when the distance from the filter device is 10cm, the closer the distance is, the more the filter devices are, the more the attenuation is serious, and the signal can not be normally identified after being attenuated by 80 dB. In order to achieve the filtering function and avoid the PLC carrier signal attenuation, it is preferable to extract the filtering circuit of the main control board, dispose the filtering circuit on a single small filtering board (i.e. a secondary filtering board), and place the filtering circuit close to the main control board, as shown in fig. 2.
Because the product development considers the miniaturization of the electrical box, the distance between the filter circuit (mainly a first-stage filter circuit) and the PLC module is limited, and the distance requirement of 1m cannot be met. Therefore, the space inside the electrical box is actually very limited, and in order to avoid PLC carrier signal attenuation as much as possible, a layered layout inside the electrical box may be considered. That is, optionally, as shown in fig. 3, the electrical box includes an upper electrical box a and a lower electrical box B, wherein the main control board 206 and the secondary filter board 212 are installed in the upper electrical box a; the fan board 202, the drive board 204 and the primary filter board 208 are mounted in the lower electrical box B. In addition to the circuit board, XT1, XT2 and a wireless module can be mounted in the upper electrical box a; in addition to the circuit board, L may be mounted in the lower electrical box B.
Optionally, the air conditioning system includes a multi-split air conditioning system, and the electrical box is disposed in the multi-split air conditioning system.
Example 3
According to an embodiment of the present invention, an apparatus embodiment of an electrical box is provided.
Fig. 4 is a schematic view of another alternative electrical box according to an embodiment of the present invention, as shown in fig. 4, which is applied to an air conditioning system, and includes: a fan plate 202; the driving board 204 is provided with a driving circuit, the driving board 204 is connected with the fan board 202, and the driving circuit is used for driving the fan board 202 to move; the main control board 206 is provided with a PLC module 2062, and the PLC module 2062 is used for controlling the driving of the driving circuit; first order filter board 208 is provided with first order filter circuit on it, and first order filter board is connected with drive plate 204, and is connected with main control board 206, and PLC module 2062 is connected with first order filter circuit, and power 210 supplies power to drive plate 204 and main control board 206 after the filtering of first order filter circuit.
On one hand, the PLC signals are transmitted through the power line, namely, the communication signals of the PLC are transmitted with the power supply in a collinear way, so that the wiring complexity of engineering and the wire cost are reduced. On the other hand, in this embodiment, the power supply (e.g., commercial power) needs to supply power to each circuit board block inside the electrical box after passing through the first-stage filter board 208, and the PLC module 2062 is disposed on the main control board 206, and its signal is transmitted through the power line, so that it must pass through the first-stage filter board 208 for filtering, and the bandwidth range of the PLC technology is 2-30MHZ, and the filtered signal is weakened, which may result in abnormal transmission.
According to the embodiment of the invention, the air conditioning system is controlled by the PLC module, the electric appliance box applied to the air conditioning system is arranged, the purpose of controlling the air conditioning system by using the PLC technology is achieved, and the technical effects of reducing the engineering wiring complexity and the wire cost of the communication network of the air conditioning system are realized due to the collinear transmission of the power signal and the communication signal in the PLC technology, so that the technical problems that the engineering wiring complexity and the wire cost are increased due to the offline transmission of the power supply and the communication signal in the communication network of the air conditioning system in the related technology are solved.
Considering the influence of first-stage filter board, optionally, above-mentioned PLC module is connected with the power through the interface that lacks reverse protector, directly makes the PLC module get the electricity from the main control board interface that lacks reverse protector promptly. The interface is not filtered, extra wiring is not needed, the filtering effect is not affected, and wiring of the PCB is slightly changed on the main control board.
Considering that the power signal filtered by the first-stage filter board can reach the main control board only through a certain routing during installation, at the moment, if the filtered power signal is directly accessed into the main control board, a certain interference signal can be introduced. In order to avoid introducing the interference signal, optionally, a secondary filter circuit may be further disposed in the electrical box, and configured to filter an input signal of the main control board.
Optionally, the second-stage filter circuit can be arranged on the main control board or on the second-stage filter board, and under the condition, the second-stage filter board is connected between the first-stage filter board and the main control board.
According to actual test, the PLC carrier signal can not be attenuated generally when reaching more than 1m from the filter device, 10dB of attenuation can be generated when the distance from the filter device is 10cm, the closer the distance is, the more the filter devices are, the more the attenuation is serious, and the signal can not be normally identified after being attenuated by 80 dB. In order to achieve the filtering function and avoid the attenuation of the PLC carrier signal, it is preferable to extract the filtering circuit of the main control board, set the filtering circuit on a single small filtering board (i.e. on the secondary filtering board), and place the filtering circuit close to the main control board.
Because the product development considers the miniaturization of the electrical box, the distance between the filter circuit (mainly a first-stage filter circuit) and the PLC module is limited, and the distance requirement of 1m cannot be met. Therefore, the space inside the electrical box is actually very limited, and in order to avoid PLC carrier signal attenuation as much as possible, a layered layout inside the electrical box may be considered. That is, optionally, the electrical box includes an upper electrical box a and a lower electrical box B, wherein the main control board and the secondary filter board are installed in the upper electrical box a; the fan plate, drive plate and primary filter plate 208 are mounted in the lower electrical box B. In addition to the circuit board, XT1, XT2 and a wireless module can be mounted in the upper electrical box a; in addition to the circuit board, L may be mounted in the lower electrical box B.
Optionally, the air conditioning system includes a multi-split air conditioning system, and the electrical box is disposed in the multi-split air conditioning system.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An electrical box applied to an air conditioning system is characterized by comprising:
a fan plate;
the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move;
the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit;
the power supply is used for supplying power to the drive board and the main control board after being filtered by the primary filter circuit, the PLC module is connected with the power supply through an interface without a reverse protector, a secondary filter circuit is further arranged in the electric appliance box and used for filtering input signals of the main control board, the secondary filter circuit is arranged on the secondary filter board, the secondary filter board is connected between the primary filter board and the main control board, the electric appliance box comprises an upper electric appliance box and a lower electric appliance box, and the main control board and the secondary filter board are installed in the upper electric appliance box; the fan board, the drive board and the first-stage filter board are installed in the lower-layer electric appliance box.
2. The electrical box of claim 1, wherein the secondary filter circuit is disposed on the main control board.
3. The electrical box of claim 1, wherein the air conditioning system comprises a multi-split air conditioning system, and wherein the electrical box is disposed in the multi-split air conditioning system.
4. An electrical box applied to an air conditioning system is characterized by comprising:
a fan plate;
the driving board is provided with a driving circuit, the driving board is connected with the fan board, and the driving circuit is used for driving the fan board to move;
the main control board is provided with a PLC module which is used for controlling the driving of the driving circuit;
the PLC module is connected with the primary filter circuit, a power supply supplies power to the drive board and the main control board after being filtered by the primary filter circuit, a secondary filter circuit is further arranged in the electrical box and used for filtering input signals of the main control board, the secondary filter circuit is arranged on the secondary filter board, the secondary filter board is connected between the primary filter board and the main control board, the electrical box comprises an upper electrical box and a lower electrical box, and the main control board and the secondary filter board are installed in the upper electrical box; the fan board, the drive board and the first-stage filter board are installed in the lower-layer electric appliance box.
5. An air conditioning system, comprising:
a multi-split air conditioning system in which the electrical box of any one of claims 1 to 4 is provided.
6. The air conditioning system of claim 5, wherein the multiple air conditioner unit comprises a plurality of sets, each set of the multiple air conditioner unit being connected to a power source via an electric meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610335254.8A CN106052007B (en) | 2016-05-18 | 2016-05-18 | Electrical box and air conditioning system |
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|---|---|---|---|
| CN201610335254.8A CN106052007B (en) | 2016-05-18 | 2016-05-18 | Electrical box and air conditioning system |
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| CN106052007A CN106052007A (en) | 2016-10-26 |
| CN106052007B true CN106052007B (en) | 2021-11-16 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108662722B (en) | 2018-04-13 | 2020-07-14 | 珠海格力电器股份有限公司 | Signal transmission method, system, device, storage medium and electronic device |
| CN109269055A (en) * | 2018-08-13 | 2019-01-25 | 珠海格力电器股份有限公司 | Electrical appliance kit and air-conditioning system |
| CN111336574A (en) * | 2020-03-09 | 2020-06-26 | 张晓菊 | Power line carrier logic heating system and working method thereof |
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