CN221197646U - Multi-split air conditioner system - Google Patents
Multi-split air conditioner system Download PDFInfo
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- CN221197646U CN221197646U CN202323112500.8U CN202323112500U CN221197646U CN 221197646 U CN221197646 U CN 221197646U CN 202323112500 U CN202323112500 U CN 202323112500U CN 221197646 U CN221197646 U CN 221197646U
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- 239000003507 refrigerant Substances 0.000 claims abstract description 57
- 230000006854 communication Effects 0.000 claims description 63
- 238000004891 communication Methods 0.000 claims description 62
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses a multi-split air conditioner system, which comprises an outdoor unit, a plurality of air conditioner units and a plurality of air conditioner units, wherein the outdoor unit comprises a group of refrigerant pipe groups; n branch pipes, n is an integer and is more than or equal to 2; n+1 branch boxes, which are used for connecting the indoor units; the main pipe of the 1 st branch pipe is connected with the refrigerant pipe group, the first branch pipe of the i branch pipe is connected with the i branch box, the second branch pipe of the i branch pipe is connected with the main pipe of the i+1 branch pipe, the first branch pipe and the second branch pipe of the n branch pipe are respectively connected with the n branch box and the n+1 branch box, i is an integer and is more than or equal to 2 and less than or equal to n. Compared with the traditional multi-split system, the multi-split system can prolong the installable distance between the outdoor unit and the indoor unit through the switching of the split boxes, improves the connection quantity of the indoor units, and meets more installation and use scenes.
Description
Technical Field
The utility model relates to the field of air conditioners, in particular to a multi-split air conditioner system.
Background
At present, the air conditioning system with one outdoor unit has multiple groups of pipes, namely, the number of high-low pressure pipes of the outdoor unit is the same as that of the indoor units, refrigerant flow paths are communicated between the outdoor units and the indoor units in a branch pipe mode, and the communication mode between each indoor unit and the outdoor unit is current loop communication.
The scheme of current loop communication is not suitable for long-distance communication scenes, limits the distance between the outdoor units and the indoor units of a plurality of groups of pipe types, ensures that the quantity of refrigerant pipe groups which can be connected with the outdoor units of the plurality of groups of pipe types is fixed, cannot be connected with the indoor units exceeding the maximum quantity of high-low pressure pipes of the outdoor units, and brings inconvenience to users for expanding the indoor units.
Disclosure of utility model
The embodiment of the utility model provides a multi-split system which can expand the connection quantity of indoor units without limitation.
In a first aspect, an embodiment of the present utility model provides a multi-split system, including:
An outdoor unit including a group of refrigerant tube groups;
n branch pipes, n is an integer and is more than or equal to 2;
n+1 branch boxes, wherein the branch boxes are used for connecting the indoor units;
The main pipe of the 1 st branch pipe is connected with the refrigerant pipe group, the first branch pipe of the i branch pipe is connected with the i branch box, the second branch pipe of the i branch pipe is connected with the main pipe of the i+1 branch pipe, the first branch pipe and the second branch pipe of the n branch pipe are respectively connected with the n branch box and the n+1 branch box, i is an integer and is more than or equal to 2 and less than or equal to n.
In some embodiments, the control board of the divergence box includes a first communication port and a plurality of second communication ports, the first communication port is connected to the control board of the outdoor unit, and each of the second communication ports is connected to a control board of the indoor unit.
In some embodiments, the first communication port is an RS485 communication port, and a twisted pair is connected between the first communication port and a control board of the outdoor unit; the second communication port is a current loop communication port, and a current transmission line is connected between the second communication port and a control board of the indoor unit.
In some embodiments, the control board of the branch box is configured to receive, through the second communication port, operation state data of all the indoor units connected to the branch box, and is further configured to send energy demand data to the control board of the outdoor unit through the first communication port.
In some embodiments, the operating state data includes at least one of an indoor ambient temperature, a heat exchanger temperature, a set temperature, a fan speed, and an indoor unit calibration parameter.
In some embodiments, the branch box comprises a plurality of throttle valves, and each throttle valve is correspondingly connected with one or more heat exchangers of one indoor unit through a refrigerant pipeline.
In some embodiments, a control board of the branch box is used to control an opening degree of the throttle valve to distribute a flow rate of the refrigerant tube group of the outdoor unit to the branch box to the indoor unit.
In some embodiments, a stop valve is disposed in a refrigerant conduit from the throttle valve to the indoor unit.
In some embodiments, a cut-off valve is provided in a refrigerant pipe group from the outdoor unit to the branch box.
The multi-split system provided by the embodiment of the utility model has at least the following beneficial effects: the outdoor unit of the multi-split air conditioner adopts the outdoor unit of the single-group refrigerant pipe group, and the outdoor unit expands the connection quantity of the indoor units through the combination of the branch pipes and the branch boxes, wherein the branch pipes are connected with the main pipe of the next branch pipe and the corresponding branch box, the branch box can be connected with a plurality of indoor units, the next branch pipe can also be connected with the main pipe of the next branch pipe and the corresponding branch box through the branch pipes, and the like, so that a one-to-multiple framework with unlimited quantity of the indoor units is formed, and compared with the traditional multi-split air conditioner, the installable distance between the outdoor unit and the indoor units can be prolonged through the switching of the branch boxes, the connection quantity of the indoor units is improved, and more installation and use scenes are met.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
FIG. 1 is a schematic diagram of a multi-split system according to an embodiment of the present utility model;
Fig. 2 is a communication schematic diagram of a multi-split system according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.
At present, the air conditioning system with one outdoor unit has multiple groups of pipes, namely, the number of high-low pressure pipes of the outdoor unit is the same as that of the indoor units, refrigerant flow paths are communicated between the outdoor units and the indoor units in a branch pipe mode, and the communication mode between each indoor unit and the outdoor unit is current loop communication. That is, in the present solution, there are more indoor units, and there are more groups of high-low pressure pipes to be added to the outdoor unit, which greatly limits the length of the connection pipe between the indoor unit and the outdoor unit, the distance between the indoor unit and the outdoor unit, the number of connectable indoor units, and the overall cost.
Besides, the scheme of current loop communication is not suitable for a long-distance communication scene, limits the distance between the outdoor units and the indoor units of a plurality of groups of pipe types, ensures that the number of refrigerant pipe groups which can be connected with the outdoor units of the plurality of groups of pipe types is fixed, cannot connect the indoor units exceeding the maximum number of high-low voltage pipes of the outdoor units, and brings inconvenience to users in expanding the indoor units.
Based on this, the embodiment of the utility model provides a multi-split system, which adopts an outdoor unit of a single-group refrigerant pipe group, and the outdoor unit expands the connection quantity of indoor units through a combination of a branch pipe and a branch box, wherein the branch pipe is connected with a main pipe of the next branch pipe and a corresponding branch box through a branch pipe, the branch box can be connected with a plurality of indoor units, the next branch pipe can also be connected with a main pipe of the next branch pipe and a corresponding branch box through a branch pipe, and the like, so that a one-to-many framework with unlimited quantity of indoor units is formed.
The multi-split system is described below with reference to the accompanying drawings:
Referring to fig. 1, fig. 1 is a schematic diagram of a multi-split system according to an embodiment of the present utility model.
In some embodiments, the multi-split system includes an outdoor unit 100, where the outdoor unit 100 includes a set of refrigerant tube groups; n sub-manifolds 200, n is an integer and n is not less than 2; n+1 branch boxes 300, the branch boxes 300 being used to connect the indoor units 400;
It can be understood that the refrigerant pipe group is mainly used for conveying the refrigerant from the outdoor unit 100 to the indoor units 400, so as to further realize indoor refrigeration or heating, in this embodiment, the plurality of indoor units 400 are connected through the branch pipe 200, the branch pipe 200 is used for receiving the refrigerant of the outdoor unit 100 and distributing the refrigerant to different indoor units 400, the branch box 300 is a centralized device for distributing the flow direction of the refrigerant, the branch box 300 is used for receiving the refrigerant of the outdoor unit 100 and distributing the refrigerant to the plurality of indoor units 400, and in this embodiment, the refrigeration effect balance between the indoor units 400 is ensured by the cooperation of the branch pipe 200 and the branch box 300, and the installation space and the pipeline cost are saved.
It should be noted that the refrigerant pipe group mainly includes an air pipe, a liquid pipe, an insulating material, and the like, where the air pipe is mainly used to convey the refrigerant from the outdoor unit 100 to the branch pipe 200 and the refrigerant from the indoor unit 400 back to the branch pipe 200, the liquid pipe is mainly used to convey the liquid refrigerant, and the insulating material is used to protect the refrigerant pipe group and prevent heat loss and moisture from entering the pipe system.
It should be noted that, in the present embodiment, the branching pipes 200 may be set according to the needs of the user, n is an integer greater than or equal to 2, for example, 3, 4, 5, etc., and in fig. 1, the number of branching pipes 200 is 3, the number of branching boxes 300 is 4, and each branching box 300 is illustrated as an example to connect two indoor units 400.
The main pipe of the 1 st branch pipe 200 is connected with the refrigerant pipe group to receive the refrigerant from the outdoor unit 100, the first branch pipe of the i-th branch pipe 200 is connected with the i-th branch box 300 to split the refrigerant to the branch box 300, the second branch pipe of the i-th branch pipe 200 is connected with the main pipe of the i+1th branch pipe 200 to form a multi-split framework with unlimited number of indoor units 400, the first branch pipe and the second branch pipe of the n-th branch pipe 200 are respectively connected with the n-th branch box 300 and the n+1th branch box 300, i is an integer and is less than or equal to 2 and less than or equal to n, and through the switching of the branch boxes 300, the installable distance between the outdoor unit 100 and the indoor units 400 can be prolonged, the connection number of the indoor units 400 is improved, and more installation use scenes are satisfied.
It should be noted that, in the present solution, how many indoor units 400 are provided, how many sets of high-low pressure pipes are needed to be added to the outdoor unit 100, but only one set of refrigerant pipes is needed to be assembled to the outdoor unit 100, the branching boxes 300 are connected with different branching boxes 300 through the branching pipes 200, and the branching boxes 300 are connected with the indoor units 400, so on, a one-to-many architecture is formed, in which the number of the indoor units 400 is not limited, so that the branching boxes 300 can be installed in the indoor units without changing the indoor units, only one set of branching pipes 200 is needed from the outdoor unit 100 to the branching boxes 300, so that the installable distance between the indoor units 400 and the outdoor unit 100 is greatly increased, and meanwhile, the total piping length is reduced, and the cost is saved.
It can be appreciated that, in the present embodiment, by providing the branch pipe 200 between the branch box 300 and the outdoor unit 100, the pressure loss of the refrigerant in the pipe can be reduced, the higher cooling effect can be maintained, the layout of the refrigerant pipe can be simplified, and the length of the pipe and the number of connection points can be reduced. This reduces the material and installation costs and at the same time reduces the risk of refrigerant leakage. By providing the branch box 300, the refrigerant flow from the outdoor unit 100 can be distributed to the plurality of indoor units 400, and the appropriate refrigerant supply to each indoor unit 400 can be ensured.
Referring to fig. 2, fig. 2 is a communication schematic diagram of a multi-split system according to an embodiment of the present utility model.
In some embodiments, the control board of the manifold 300 includes a first communication port and a plurality of second communication ports, where the first communication port is connected to the control board of the outdoor unit 100 to implement communication between the manifold 300 and the outdoor unit 100, and each second communication port is connected to the control board of one indoor unit 400 to implement communication between the manifold 300 and the indoor units 400, so that the outdoor unit 100 can perform centralized management and control with the plurality of indoor units 400, reducing the number of communication lines, and reducing complexity and cost of line routing.
The splitter box 300 may serve as a transfer station between the outdoor unit 100 and the indoor unit 400, may provide a more stable and reliable communication connection, may alleviate communication problems due to an excessive distance or signal interference, and may reduce the risk of communication line failure.
In some embodiments, the first communication port is an RS485 communication port, and a twisted pair is connected between the first communication port and the control board of the outdoor unit 100, so that the influence of electromagnetic interference and noise can be effectively resisted, and the reliability and stability of the communication process are ensured; the second communication port is a current loop communication port, and a current transmission line is connected between the second communication port and a control board of the indoor unit 400, so that real-time communication between the indoor unit 400 and the bifurcation box 300 is realized, real-time current values can be quickly transmitted, and high-precision current measurement and control are realized.
It should be noted that, the RS485 communication adopts differential signal transmission, and has the characteristics of strong anti-interference capability, long transmission distance, and the like. The data transmission device can perform high-speed data transmission over a longer distance, and is suitable for applications requiring long-distance data transmission. The current loop communication port is a communication mode with higher real-time performance, and can rapidly transmit real-time current values through current loop communication. Compared with digital signal communication, the anti-interference capability of the multi-split system for the electromagnetic interference and noise is stronger, and the reliability and stability of the multi-split system are further improved.
In some embodiments, the control board of the splitter box 300 is configured to receive the operation status data of all the indoor units 400 connected to the splitter box 300 through the second communication port, so that the operation status of each indoor unit 400 can be obtained, centralized management and control of a plurality of indoor units 400 connected to the splitter box 300 can be achieved by using the splitter box 300, and the control board of the splitter box 300 is further configured to send the energy requirement data to the control board of the outdoor unit 100 through the first communication port, so that the operation status data of the indoor units 400 is sent to the control board of the outdoor unit 100, thereby achieving centralized management and control of the plurality of indoor units 400.
The splitter box 300 may serve as a relay station between the outdoor unit 100 and the indoor unit 400, and may provide a more stable and reliable communication connection. It can alleviate communication problems due to too far distance or signal interference, etc., and can reduce the risk of communication line failure. And when the multi-split system fails, the problem can be quickly positioned by checking the connection and communication states of the split box 300, and corresponding repair and adjustment can be performed.
In some embodiments, the operation state data includes at least one of indoor environment temperature, heat exchanger temperature, set temperature, fan rotation speed and calibration parameters of the indoor unit 400, so that the indoor environment temperature can be monitored in real time, and the energy demand data can be conveniently sent to the control panel of the outdoor unit 100 subsequently, so as to realize the refrigeration demands of different indoor units 400.
In some embodiments, the outdoor unit 100 includes a main expansion valve, and a control board of the outdoor unit 100 is used for controlling the opening of the main expansion valve to control the flow rate from the refrigerant pipe group to the branch box 300 of the outdoor unit 100, so as to realize the refrigeration demands of different indoor units 400, and the main expansion valve can automatically adjust the flow rate of the refrigerant according to the operation state data, so that the multi-split air conditioning system can maintain a stable refrigeration effect under different working loads, and meanwhile, the waste of the refrigerant can be reduced, and the energy efficiency ratio of the air conditioning system can be improved.
In some embodiments, the manifold 300 includes a plurality of throttle valves, each throttle valve is correspondingly connected to one or more heat exchangers of one indoor unit 400 through a refrigerant pipeline, so as to realize adjustment of flow and pressure of the indoor units 400, and further control the refrigerant flow of each indoor unit 400.
In some embodiments, the control panel of the manifold 300 is used to control the opening degree of the throttle valve to distribute the flow of the refrigerant pipe group of the outdoor unit 100 to the manifold 300 to the indoor unit 400, so that the flow can be controlled by reducing the pipe sectional area through the throttle valve, and the throttle valve can automatically adjust the flow of the refrigerant according to the operation state data, thereby improving the energy efficiency ratio of the air conditioning system.
In some embodiments, a stop valve is disposed in a refrigerant pipeline from the throttle valve to the indoor unit 400, so that the flow of refrigerant between the throttle valve and the indoor unit 400 can be cut off or switched on, the reliability and the safety of the multi-split system are improved, and the subsequent maintenance or overhaul of the multi-split system is facilitated.
The shut-off valve includes a liquid pipe shut-off valve and a gas pipe shut-off valve.
In some embodiments, the refrigerant tube groups from the outdoor unit 100 to the manifold 300 are provided with stop valves, so that the refrigerant flow between the outdoor unit 100 and the manifold 300 can be cut off or switched on, so as to control the multi-split system in a sectionalized manner, and improve the reliability and safety of the multi-split system.
The provision of the shutoff valve allows maintenance and repair of the indoor unit 400 or the manifold 300. When it is necessary to repair or replace one of the indoor units 400, the corresponding shut-off valve may be closed to shut off the flow of refrigerant between the indoor unit 400 and the branch box 300, so that necessary maintenance work is performed without affecting other indoor units 400. And the safety of the multi-split system can be improved due to the arrangement of the stop valve. In emergency situations, such as refrigerant leakage or other malfunctions, the flow of refrigerant may be shut off by closing a shut-off valve to reduce potential hazards and losses.
The features disclosed in the embodiments of the products provided by the utility model can be combined arbitrarily under the condition of no conflict to obtain new embodiments of the products.
The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network nodes. For example, the unit is only divided into one logic function, and there may be other dividing manners in actual implementation, for example: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to a device or unit, whether electrically, mechanically, or otherwise. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that the systems disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. A multi-split system, comprising:
An outdoor unit including a group of refrigerant tube groups;
n branch pipes, n is an integer and is more than or equal to 2;
n+1 branch boxes, wherein the branch boxes are used for connecting the indoor units;
The main pipe of the 1 st branch pipe is connected with the refrigerant pipe group, the first branch pipe of the i branch pipe is connected with the i branch box, the second branch pipe of the i branch pipe is connected with the main pipe of the i+1 branch pipe, the first branch pipe and the second branch pipe of the n branch pipe are respectively connected with the n branch box and the n+1 branch box, i is an integer and is more than or equal to 2 and less than or equal to n.
2. The multiple on-line system of claim 1, wherein the control board of the manifold includes a first communication port and a plurality of second communication ports, the first communication port being connected to the control board of the outdoor unit, each of the second communication ports being connected to a control board of the indoor unit.
3. The multi-split system according to claim 2, wherein the first communication port is an RS485 communication port, and a twisted pair is connected between the first communication port and a control board of the outdoor unit; the second communication port is a current loop communication port, and a current transmission line is connected between the second communication port and a control board of the indoor unit.
4. The multiple on-line system according to claim 2, wherein the control board of the manifold is configured to receive operation state data of all the indoor units connected to the manifold through the second communication port, and the control board of the manifold is further configured to transmit energy demand data to the control board of the outdoor unit through the first communication port.
5. The multi-split system of claim 4, wherein the operating state data comprises at least one of an indoor ambient temperature, a heat exchanger temperature, a set temperature, a fan speed, and an indoor unit calibration parameter.
6. The multi-split system according to claim 1, wherein the outdoor unit includes a main expansion valve, and a control panel of the outdoor unit is used for controlling an opening degree of the main expansion valve to control a flow rate of the refrigerant pipe group of the outdoor unit to the branch box.
7. The multiple on-line system according to claim 1 or 6, wherein the manifold includes a plurality of throttle valves, each of which is correspondingly connected to one or more heat exchangers of one of the indoor units through a refrigerant pipe.
8. The multiple on-line system according to claim 7, wherein the control board of the manifold is configured to control an opening degree of the throttle valve to distribute a flow rate of the refrigerant pipe group of the outdoor unit to the manifold to the indoor unit.
9. The multiple on-line system according to claim 7, wherein a shutoff valve is provided in a refrigerant pipe from the throttle valve to the indoor unit.
10. The multi-split system according to claim 6, wherein a shutoff valve is provided in a refrigerant pipe group from the outdoor unit to the manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323112500.8U CN221197646U (en) | 2023-11-17 | 2023-11-17 | Multi-split air conditioner system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323112500.8U CN221197646U (en) | 2023-11-17 | 2023-11-17 | Multi-split air conditioner system |
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| CN221197646U true CN221197646U (en) | 2024-06-21 |
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| CN202323112500.8U Active CN221197646U (en) | 2023-11-17 | 2023-11-17 | Multi-split air conditioner system |
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| CN (1) | CN221197646U (en) |
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