CN117760016A - Air conditioning system and communication device thereof - Google Patents
Air conditioning system and communication device thereof Download PDFInfo
- Publication number
- CN117760016A CN117760016A CN202211128700.XA CN202211128700A CN117760016A CN 117760016 A CN117760016 A CN 117760016A CN 202211128700 A CN202211128700 A CN 202211128700A CN 117760016 A CN117760016 A CN 117760016A
- Authority
- CN
- China
- Prior art keywords
- refrigerant pipe
- unit
- air conditioning
- conditioning system
- valve assembly
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 93
- 238000004378 air conditioning Methods 0.000 title claims abstract description 56
- 239000003507 refrigerant Substances 0.000 claims abstract description 75
- 238000009413 insulation Methods 0.000 claims description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000011900 installation process Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioning system and a communication device thereof, wherein the air conditioning system comprises an outdoor unit and at least one indoor unit, and the device comprises: an external machine controller and an internal machine controller; refrigerant pipe connecting the outdoor unit and the indoor unit; the first stop valve component is arranged at the outdoor unit side and connected with the refrigerant pipe; the second stop valve component is arranged at the indoor side and connected with the refrigerant pipe; the outer machine controller is connected with the first stop valve assembly, the inner machine controller is connected with the second stop valve assembly, and the refrigerant pipe is used for transmitting communication data. According to the communication device, communication cables are not required to be arranged between the indoor unit and the outdoor unit to transmit communication data, the whole installation process of an air conditioning system can be simplified, and labor cost is reduced.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a communication device of an air conditioning system and the air conditioning system.
Background
With the improvement of living standard of people, an air conditioner has been widely used as a device for adjusting indoor temperature. The air conditioning system is generally formed by connecting an outer machine and an inner machine through refrigerant pipes, so that the refrigerant of the inner machine and the outer machine exchange heat in a circulating way, and the refrigerating and heating functions of the air conditioner are realized.
In a multi-split air conditioning system, a plurality of internal machines exist, and a communication network needs to be established between an external machine and the internal machines for communication, and at present, the communication network used in the air conditioning system is mainly wired communication and a special communication cable is needed to be used as a communication channel. The communication channel of the indoor unit and the outdoor unit is a two-core physical cable which is used as a transmission carrier of communication signals, the communication cable is used as a connecting wire of the indoor unit and the outdoor unit of the air conditioner, the connecting wire is required to be buried in a wall body in advance, an electric wiring is required to be designed in advance during house decoration, and the installation process is time-consuming and labor-consuming and has low efficiency. In addition, if the layout of the air conditioner and the wiring of the connection lines are readjusted, the replacement cost is high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present invention is to provide a communication device of an air conditioning system, which can simplify the installation process of the whole air conditioning system and reduce the labor cost without separately providing a communication cable between an indoor unit and an outdoor unit for transmitting communication data.
A second object of the present invention is to propose an air conditioning system.
To achieve the above object, an embodiment of the present invention provides a communication device of an air conditioning system, the air conditioning system including an outdoor unit and at least one indoor unit, the device including: an external machine controller and an internal machine controller; refrigerant pipe connecting the outdoor unit and the indoor unit; the first stop valve component is arranged at the outdoor unit side and connected with the refrigerant pipe; the second stop valve component is arranged at the indoor side and connected with the refrigerant pipe; the outer machine controller is connected with the first stop valve assembly, the inner machine controller is connected with the second stop valve assembly, and the refrigerant pipe is used for transmitting communication data.
According to the communication device of the air conditioning system, the outer machine controller is connected with the first stop valve assembly, the inner machine controller is connected with the second stop valve assembly, and the refrigerant pipe is used for transmitting communication data. Therefore, the communication device of the air conditioning system does not need to independently set a communication cable between the indoor unit and the outdoor unit to transmit communication data, can simplify the whole installation process of the air conditioning system, and reduces labor cost.
In addition, the communication device of the air conditioning system according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the external machine controller and the internal machine controller communicate through the first stop valve assembly, the second stop valve assembly and the refrigerant pipe.
According to an embodiment of the present invention, the communication device of the air conditioning system may further include: the insulation assembly comprises a first insulation assembly and a second insulation assembly, the first insulation assembly is arranged on the outdoor unit, and the second insulation assembly is arranged on the indoor unit.
According to one embodiment of the invention, a first shut-off valve assembly is disposed on the first insulating assembly and a second shut-off valve assembly is disposed on the second insulating assembly.
According to an embodiment of the present invention, the communication device of the air conditioning system may further include: the first insulating refrigerant pipe is arranged in the outdoor unit and is respectively connected with the outdoor heat exchanger and the refrigerant pipe; the second insulating refrigerant pipe is arranged in the indoor unit and is respectively connected with the indoor heat exchanger and the refrigerant pipe.
According to one embodiment of the invention, the first and second insulating refrigerant pipes are hoses.
According to one embodiment of the invention, the external machine controller and the internal machine controller both comprise a main control unit and a carrier communication unit, wherein the main control unit and the carrier communication unit are in communication through an RS485 serial port or a low-voltage power carrier, and the carrier communication unit is electrically connected with the first stop valve assembly/the second stop valve assembly.
According to one embodiment of the present invention, when the main control unit and the carrier communication unit communicate through the low-voltage power carrier, the carrier communication unit includes a power supply bus chip.
According to one embodiment of the invention, the refrigerant tube is a copper tube.
In order to achieve the above object, a second aspect of the present invention provides an air conditioning system, which includes the communication device of the air conditioning system.
According to the air conditioning system provided by the embodiment of the invention, the communication device of the air conditioning system is used for transmitting communication data without independently arranging the communication cable between the indoor unit and the outdoor unit, so that the whole installation process of the air conditioning system can be simplified, and the labor cost is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a block diagram illustrating a communication device of an air conditioning system according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating connection of an outdoor unit and an indoor unit according to an embodiment of the present invention;
fig. 3 is a block schematic diagram of an air conditioning system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In one embodiment of the present invention, an air conditioning system may include: an outdoor unit and at least one indoor unit. The number of indoor units may be determined according to the actual situation, for example, the number of indoor units may be set to be larger in a place where the cooling or heating demand is larger, and the number of indoor units may be set to be smaller in a place where the cooling or heating demand is smaller.
The communication device of the air conditioning system and the air conditioning system according to the embodiment of the invention are described below with reference to the accompanying drawings.
Fig. 1 is a block diagram of a communication device of an air conditioning system according to an embodiment of the present invention.
As shown in fig. 1, the communication device of the air conditioning system may include: the external unit controller 10, the internal unit controller 20, the refrigerant pipe 30, the first shut-off valve assembly 40 and the second shut-off valve assembly 50.
The refrigerant pipe 30 is used for connecting an outdoor unit and an indoor unit, the first stop valve assembly 40 is arranged on the outdoor unit side and is connected with the refrigerant pipe 30, the second stop valve assembly 50 is arranged on the indoor unit side and is connected with the refrigerant pipe 30, the outdoor unit controller 10 is connected with the first stop valve assembly 40, the indoor unit controller 20 is connected with the second stop valve assembly 50, and the refrigerant pipe 30 is further used for transmitting communication data.
Specifically, the refrigerant pipe 30 is used to connect the outdoor unit and the indoor unit, is a necessary pipeline for the operation of the air conditioning system, is a component for conveying the refrigerant, and can be used as a communication transmission channel for transmitting communication data so as to enable the indoor unit and the outdoor unit to communicate. In the air conditioning system, the refrigerant pipe 30 is designed and connected with the indoor unit and the outdoor unit during installation, and the pipeline is wired clearly, the path is shorter, and the size is larger, so that the communication signal transmission is more efficient. Therefore, when the air conditioning system is electrified to work, the communication device of the air conditioning system can communicate the indoor unit with the outdoor unit through the refrigerant pipe, a special communication cable is not required to be arranged, the whole installation process of the air conditioning system is simplified, the labor cost is reduced, and potential safety hazards caused by artificial factors such as improper installation of communication wires are avoided.
According to one embodiment of the present invention, the external and internal controllers 10 and 20 communicate through the first and second shut-off valve assemblies 40 and 50 and the refrigerant pipe 30.
Specifically, the outdoor unit controller 10 is electrically connected to the first cut-off valve assembly 40 through an internal communication line, the indoor unit controller 20 is electrically connected to the second cut-off valve assembly 50 through an internal communication line, and then the indoor unit and the outdoor unit are electrically connected to each other through the refrigerant pipe 30, the first cut-off valve assembly 40 and the second cut-off valve assembly 50, so that a communication link between the indoor unit and the outdoor unit can be formed for communication. For example, the indoor unit sends a control command to the outdoor unit through the indoor unit controller 20, that is, a command signal is transmitted from the indoor unit controller 20 to the second stop valve assembly 50 through an internal communication line, then transmitted to the first stop valve assembly 40 through the refrigerant pipe 30, and finally transmitted to the outdoor unit controller 10 of the outdoor unit, thereby controlling the operation mode of the outdoor unit (for example, starting the compressor or turning off the compressor, etc.). For another example, the outdoor unit sends its own running state, environmental parameters, fault codes, etc. to the indoor unit through the outdoor unit controller 10, that is, command signals are transmitted from the outdoor unit controller 10 to the first stop valve assembly 40 through the internal communication line, then transmitted to the second stop valve assembly 50 through the refrigerant pipe 30, and finally transmitted to the indoor unit controller 20 of the indoor unit.
According to an embodiment of the present invention, taking an example that an air conditioning system includes an indoor unit and an outdoor unit, as shown in fig. 2, the communication device of the air conditioning system may further include: the insulation assembly may include a first insulation assembly 60 and a second insulation assembly 70, the first insulation assembly 60 being disposed on the outdoor unit, and the second insulation assembly 70 being disposed on the indoor unit.
Further, according to one embodiment of the present invention, as shown in fig. 2, the first shut-off valve assembly 40 is disposed on the first insulation assembly 60, and the second shut-off valve assembly 50 is disposed on the second insulation assembly 70.
Specifically, since the first shutoff valve assembly 40, the second shutoff valve assembly 50 and the refrigerant pipe 30 (copper pipe) are all good conductors, the conductivity is good, the first shutoff valve assembly 40 is fixedly installed on the first insulation assembly 60, the second shutoff valve assembly 50 is installed on the second insulation assembly 70, the first insulation assembly 60 is installed on the outdoor unit, and the second insulation assembly 70 is installed on the indoor unit in order to ensure insulation of the refrigerant pipe 30 to the ground. The first insulating component 60 and the second insulating component 70 may be resin plates, and are fixedly arranged on the casings of the indoor unit and the outdoor unit, so as to achieve the purpose of insulating the indoor unit and the outdoor unit.
According to an embodiment of the present invention, as shown in fig. 2, the communication device of the air conditioning system may further include: the first insulating refrigerant pipe 80 and the second insulating refrigerant pipe 90, wherein the first insulating refrigerant pipe 80 is disposed in the outdoor unit and is connected to the outdoor heat exchanger 100 and the refrigerant pipe 30, respectively, and the second insulating refrigerant pipe 90 is disposed in the indoor unit and is connected to the indoor heat exchanger 110 and the refrigerant pipe 30, respectively. The first insulating coolant pipe 80 and the second insulating coolant pipe 90 are hoses, and the coolant pipe 30 may be a copper pipe.
Specifically, the first insulating refrigerant pipe 80 is provided between the outdoor heat exchanger 100 and the refrigerant pipe 30, the second insulating refrigerant pipe 90 is provided between the indoor heat exchanger 110 and the refrigerant pipe 30, and the first insulating refrigerant pipe 80 and the second insulating refrigerant pipe 90 are made of an explosion-proof hose (having characteristics such as explosion-proof, insulating, corrosion-resistant, water-resistant, and aging-resistant) instead of copper pipes, so that the refrigerant pipe 30 is not energized with the outdoor heat exchanger 100 and the indoor heat exchanger 110 while performing signal transmission, and insulation between a communication link using the refrigerant pipe 30 for communication and the ground can be ensured, that is, the refrigerant pipe 30 can be insulated from the ground while performing signal transmission. The copper pipe is used for storing refrigerant and radiating heat, and has good stability, long service life, difficult corrosion and the like. In addition, the copper pipe can be an internal thread copper pipe, and the heat conductivity is stronger due to the increase of the internal surface area of the internal thread copper pipe. For example, when the air conditioning system is refrigerating, the compressor compresses the gaseous refrigerant into a high-temperature and high-pressure liquid refrigerant, and then sends the liquid refrigerant to the outdoor heat exchanger 100 (condenser) to dissipate heat, so as to form a medium-temperature and medium-pressure liquid refrigerant, the liquid refrigerant formed by the condenser passes through the first insulating refrigerant pipe 80 and then enters the refrigerant pipe 30, and then passes through the second insulating refrigerant pipe 90 to enter the indoor heat exchanger 110 (evaporator) of the indoor unit, and due to the sudden increase of space and the decrease of pressure, the liquid refrigerant is gasified, and because a great amount of heat is absorbed in the process of converting the liquid state into the gaseous state, the evaporator is cooled, and when the fan of the indoor unit blows indoor air from the evaporator, the purpose of reducing the room temperature can be achieved. Therefore, the refrigerant is transmitted when the air conditioning system operates, and the outdoor unit and the indoor unit are communicated through the refrigerant pipe.
According to an embodiment of the present invention, the external machine controller 10 and the internal machine controller 20 each include a main control unit and a carrier communication unit, wherein the main control unit and the carrier communication unit communicate through an RS485 serial port or a low voltage power carrier, and the carrier communication unit is electrically connected with the first stop valve assembly 40/the second stop valve assembly 50.
According to one embodiment of the present invention, when the main control unit and the carrier communication unit communicate through the low-voltage power carrier, the carrier communication unit includes a power supply bus chip.
Specifically, in the process of communication between the indoor unit and the outdoor unit, the main control unit and the carrier communication unit can communicate through an RS485 serial port, namely, a digital signal adopts a differential signal mode to transmit on two independent media, so that the interference of noise signals can be effectively reduced, wherein the serial port communication chip can be TI THVD8000. The carrier communication unit is electrically connected with the first stop valve assembly 40 and the second stop valve assembly 50, and the power line carrier communication mechanism for transmitting data by using the refrigerant pipe 30 can enable the indoor unit to communicate with the outdoor unit, and the refrigerant pipe 30 is only used for transmitting refrigerant and is not connected with any electrical equipment, so that no communication interference source exists during transmission, and the reliability during data transmission is ensured. In addition, when the main control unit and the carrier communication unit communicate through the low-voltage power carrier, the carrier communication unit comprises a power bus chip (powerbus), and the power bus chip is a technology for combining a power supply line and a signal line into a whole relative to an RS485 four-wire system (two power supply lines and two communication lines), so that the signal and power supply share one bus, and due to the performance of a nonpolar wiring arbitrary topology (tree, star and bus), wiring errors in construction are avoided, and the construction design is simplified.
In summary, according to the communication device of the air conditioning system of the embodiment of the present invention, the external unit controller is connected to the first stop valve assembly, the internal unit controller is connected to the second stop valve assembly, and the refrigerant pipe is used for transmitting communication data. Therefore, the communication device of the air conditioning system does not need to independently set a communication cable between the indoor unit and the outdoor unit to transmit communication data, can simplify the whole installation process of the air conditioning system, and reduces labor cost.
Corresponding to the embodiment, the invention also provides an air conditioning system.
As shown in fig. 3, an air conditioning system 200 according to an embodiment of the present invention may include: the communication device 210 of the air conditioning system is described above.
According to the air conditioning system provided by the embodiment of the invention, the communication device of the air conditioning system is used for transmitting communication data without independently arranging the communication cable between the indoor unit and the outdoor unit, so that the whole installation process of the air conditioning system can be simplified, and the labor cost is reduced.
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 invention. 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.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, 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 invention.
Claims (10)
1. A communication device of an air conditioning system, wherein the air conditioning system includes an outdoor unit and at least one indoor unit, the device comprising:
an external machine controller and an internal machine controller;
a refrigerant pipe connecting the outdoor unit and the indoor unit;
the first stop valve component is arranged at the outdoor unit side and connected with the refrigerant pipe;
the second stop valve assembly is arranged on the indoor machine side and connected with the refrigerant pipe;
the outer machine controller is connected with the first stop valve assembly, the inner machine controller is connected with the second stop valve assembly, and the refrigerant pipe is used for transmitting communication data.
2. The apparatus of claim 1, wherein the external and internal controls communicate through the first, second, and refrigerant lines.
3. The apparatus as recited in claim 1, further comprising: the insulation assembly comprises a first insulation assembly and a second insulation assembly, wherein the first insulation assembly is arranged on the outdoor unit, and the second insulation assembly is arranged on the indoor unit.
4. The apparatus of claim 3, wherein the first shut-off valve assembly is disposed on the first insulation assembly and the second shut-off valve assembly is disposed on the second insulation assembly.
5. The apparatus as recited in claim 1, further comprising:
the first insulating refrigerant pipe is arranged in the outdoor unit and is respectively connected with the outdoor heat exchanger and the refrigerant pipe;
the second insulating refrigerant pipe is arranged in the indoor unit and is respectively connected with the indoor heat exchanger and the refrigerant pipe.
6. The apparatus of claim 5, wherein the first and second insulating refrigerant tubes are hoses.
7. The apparatus of claim 1, wherein the external machine controller and the internal machine controller each comprise a main control unit and a carrier communication unit, wherein the main control unit communicates with the carrier communication unit through an RS485 serial port or a low voltage power carrier, and the carrier communication unit is electrically connected with the first stop valve assembly/the second stop valve assembly.
8. The apparatus of claim 7, wherein the carrier communication unit comprises a power bus chip when the master control unit communicates with the carrier communication unit via a power-capable power carrier.
9. The apparatus of claim 1, wherein the refrigerant tube is a copper tube.
10. An air conditioning system comprising a communication device of an air conditioning system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211128700.XA CN117760016A (en) | 2022-09-16 | 2022-09-16 | Air conditioning system and communication device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211128700.XA CN117760016A (en) | 2022-09-16 | 2022-09-16 | Air conditioning system and communication device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117760016A true CN117760016A (en) | 2024-03-26 |
Family
ID=90310943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211128700.XA Pending CN117760016A (en) | 2022-09-16 | 2022-09-16 | Air conditioning system and communication device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117760016A (en) |
-
2022
- 2022-09-16 CN CN202211128700.XA patent/CN117760016A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105190188A (en) | A modular liquid based heating and cooling system | |
| US10302315B2 (en) | Packaged air conditioning system having multiple utility connectivity | |
| WO2023092936A1 (en) | Air conditioner | |
| CN103486765A (en) | Radiant floor heating fan coil refrigerated wind source heat pump device | |
| CN201014828Y (en) | Water-loop heat pump type frequency conversion multi-online system | |
| CN103245133A (en) | Defrosting condenser for outdoor unit of heating device and defrosting control method of defrosting condenser | |
| CN105276725A (en) | Multi-connected air conditioner hot water unit | |
| CN117760016A (en) | Air conditioning system and communication device thereof | |
| CN204830249U (en) | Air conditioner system | |
| CA3017820A1 (en) | Heat transfer and hydronic systems | |
| CN203561107U (en) | Floor-radiant-heating and fan-coil-refrigerated type wind-source heat pump device | |
| CN211265088U (en) | Self-cooling cable and cable self-cooling system | |
| CN210320302U (en) | Integrated microporous tube machine set | |
| CN217882710U (en) | Network wiring device | |
| CN218237797U (en) | Air conditioner indoor unit control panel, air conditioner control system and air conditioner indoor unit | |
| CN221349259U (en) | Multi-connected system of multi-protocol networking | |
| CN221197646U (en) | Multi-split air conditioner system | |
| CN221301442U (en) | Multi-connected system of multi-protocol networking | |
| CN219141158U (en) | Refrigerating equipment convenient to install and used by super business | |
| CN220507147U (en) | Cabinet air conditioner double-unit on-line control system | |
| CN217643386U (en) | Multi-split air conditioner communication system | |
| CN213453936U (en) | Air conditioning system | |
| CN218270237U (en) | High-efficient cooling device of graphitizing furnace end | |
| CN221349260U (en) | Multi-connected system of multi-protocol networking | |
| CN210512082U (en) | Air conditioner energy recovery unit |
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 |