阅读说明：本技术 一种制冷剂分配调节装置、空调系统和空调系统控制方法 (Refrigerant distribution adjusting device, air conditioning system and air conditioning system control method ) 是由 吴志刚 王嘉贝 范波 于 2019-01-31 设计创作，主要内容包括：本发明提供一种制冷剂分配调节装置、空调系统和空调系统控制方法,其中,制冷剂分配调节装置包括：制冷剂分配单元,包括第一流道和第二流道,第一流道的容积大于第二流道的容积；流道切换单元,流道切换单元可在第一状态与第二状态之间切换；在第一状态下,第一流道与第一介质提供装置和室内热交换单元连通,第二流道与第二介质提供装置和压缩机单元连通；在第二状态下,第一流道与第二介质提供装置和压缩机单元连通,第二流道与第一介质提供装置和室内热交换单元连通。本发明中,可以利用两个流道容积的差别实现制冷剂量的调节,从而在空调系统工作于不同工况下时,实现制冷剂量的调节。(The invention provides a refrigerant distribution adjusting device, an air conditioning system and an air conditioning system control method, wherein the refrigerant distribution adjusting device comprises: a refrigerant distribution unit including a first flow passage and a second flow passage, the first flow passage having a volume greater than that of the second flow passage; the flow channel switching unit can be switched between a first state and a second state; in a first state, the first flow channel is communicated with the first medium supply device and the indoor heat exchange unit, and the second flow channel is communicated with the second medium supply device and the compressor unit; in the second state, the first flow passage is communicated with the second medium supply device and the compressor unit, and the second flow passage is communicated with the first medium supply device and the indoor heat exchange unit. In the invention, the adjustment of the refrigerant quantity can be realized by utilizing the volume difference of the two flow passages, so that the adjustment of the refrigerant quantity is realized when the air conditioning system works under different working conditions.)

1. A refrigerant distribution and adjustment device for an air conditioning system, the device comprising:

a refrigerant distribution unit including a first flow passage and a second flow passage, a volume of the first flow passage being greater than a volume of the second flow passage;

the flow channel switching unit is respectively connected with the first flow channel and the second flow channel, and is also used for being respectively connected with a first medium providing device, a second medium providing device, an indoor heat exchange unit and a compressor unit of the air conditioning system;

the flow channel switching unit can be switched between a first state and a second state;

in the first state, the first flow passage is used for being communicated with the first medium supply device and the indoor heat exchange unit respectively, and the second flow passage is used for being communicated with the second medium supply device and the compressor unit respectively;

in a second state, the first flow passage is used for being communicated with the second medium supply device and the compressor unit respectively, and the second flow passage is used for being communicated with the first medium supply device and the indoor heat exchange unit respectively;

the first medium is a liquid-phase refrigerant, and the second medium is a gas-liquid two-phase refrigerant.

2. The adjustment device according to claim 1, characterized in that the first flow channel is provided with a first and a second interface, and the second flow channel is provided with a third and a fourth interface;

the flow channel switching unit is respectively connected with the first interface, the second interface, the third interface and the fourth interface;

in the first state, the first interface is used for communicating with the first medium providing device, the second interface is used for communicating with the indoor heat exchange unit, the third interface is used for communicating with the second medium providing device, and the fourth interface is used for communicating with the compressor unit;

in the second state, the first interface is used for communicating with the second medium providing device, the second interface is used for communicating with the compressor unit, the third interface is used for communicating with the first medium providing device, and the fourth interface is used for communicating with the indoor heat exchange unit.

3. The adjusting apparatus according to claim 2, wherein the flow passage switching unit includes a first flow passage switching mechanism and a second flow passage switching mechanism;

the first flow channel switching mechanism is respectively connected with the first interface and the third interface, and the first flow channel switching mechanism is further used for respectively connecting with the first medium providing device and the second medium providing device;

the second flow channel switching mechanism is respectively connected with the second interface and the fourth interface, and the second flow channel switching mechanism is further used for being respectively connected with the indoor heat exchange unit and the compressor unit.

4. The adjustment device of claim 3, wherein the first flow path switching mechanism is a first four-way valve and the second flow path switching mechanism is a second four-way valve;

alternatively, the first and second electrodes may be,

the first flow channel switching mechanism comprises a first electromagnetic valve, a second electromagnetic valve, a first check valve, a second check valve and a three-way valve, and the second flow channel switching mechanism is a third four-way valve; the first solenoid valve with the second solenoid valve be used for respectively with first medium provides the device and connects, first check valve with the second check valve be used for respectively with the second medium provides the device and connects, first solenoid valve passes through the three-way valve respectively with first check valve with the third interface connection, the second solenoid valve respectively with the second check valve with first interface connection.

5. The adjusting apparatus according to claim 1 or 2, wherein the flow passage switching unit is an eight-way valve integrating two four-way valves.

6. The conditioning device in accordance with any one of claims 1 to 4, wherein the first flow channel is in contact with the second flow channel for heat exchange of a medium in the first flow channel with a medium in the second flow channel.

7. The adjustment device of any one of claims 1 to 4, wherein the first flow passage is not in contact with the second flow passage.

8. An air conditioning system, comprising: a first medium providing means, a second medium providing means, a compressor unit, an indoor heat exchange unit, and the refrigerant distribution adjusting means of any one of claims 1 to 7;

the flow channel switching unit is respectively connected with the first medium supply device, the second medium supply device, the indoor heat exchange unit and the compressor unit;

in a first state, the first flow passage is communicated with the first medium supply device and the indoor heat exchange unit respectively, and the second flow passage is communicated with the second medium supply device and the compressor unit respectively;

in a second state, the first flow passage is in communication with the second medium supply device and the compressor unit, respectively, and the second flow passage is in communication with the first medium supply device and the indoor heat exchange unit, respectively.

9. The air conditioning system of claim 8, wherein the first medium providing device is connected to the second medium providing device, the first medium providing device is a condenser of the air conditioning system, and the second medium providing device is a restrictor of the air conditioning system.

10. The air conditioning system of claim 9, wherein the first flow passage is in contact with the second flow passage;

and the refrigerant distribution unit of the refrigerant distribution adjusting device is a subcooler of the air conditioning system.

11. An air conditioning system control method applied to the air conditioning system according to any one of claims 8 to 10, the method comprising:

and controlling the state of a flow channel switching unit of the air conditioning system according to the working condition of the air conditioning system.

12. The method of claim 11, wherein the controlling the state of the flow channel switching unit of the air conditioning system according to the operating condition of the air conditioning system comprises:

when the air conditioning system works under a first refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a first state;

when the air conditioning system works in a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a second state;

the environment temperature corresponding to the first refrigeration working condition is greater than a temperature threshold value, and the environment temperature corresponding to the second refrigeration working condition is smaller than or equal to the temperature threshold value.

13. The method of claim 12, further comprising:

when the refrigeration working condition of the air conditioning system is switched from the first refrigeration working condition to a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be switched from the first state to the second state;

and/or the presence of a gas in the gas,

and when the refrigeration working condition of the air conditioning system is switched from the second refrigeration working condition to the first refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the second state to the first state.

14. An air conditioning system characterized in that the air conditioning system is the air conditioning system of any one of claims 8 to 10, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps in the air conditioning system control method of any one of claims 11 to 13.

15. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, carries out the steps of the air conditioning system control method according to any one of claims 11 to 13.

Technical Field

The invention relates to the technical field of air conditioners, in particular to a refrigerant distribution adjusting device, an air conditioning system and an air conditioning system control method.

Background

The amount of refrigerant in the air conditioning system directly affects the performance of the air conditioner, and the air conditioning system needs different amounts of refrigerant under different working conditions. For example, at high temperature refrigeration conditions, the amount of refrigerant required by the air conditioning system is less than that required at standard refrigeration conditions due to the need to maintain a constant compressor discharge pressure. The quantity of the refrigerant in the existing air conditioning system is generally a constant value, the capacity of the unit under the high-temperature refrigeration working condition can be limited by excessive refrigerant, and the energy efficiency performance of the unit under the standard refrigeration working condition can be influenced by singly reducing the quantity of the refrigerant. Therefore, the technical problem that the refrigerant quantity cannot be adjusted along with the working condition exists in the conventional air conditioning system.

Disclosure of Invention

The embodiment of the invention provides a refrigerant distribution adjusting device, an air conditioning system and an air conditioning system control method, and aims to solve the technical problem that the refrigerant quantity of an existing air conditioning system cannot be adjusted along with working conditions.

In order to solve the above problems, the present invention is realized by:

in a first aspect, an embodiment of the present invention provides a refrigerant distribution and adjustment device for an air conditioning system, the device including:

a refrigerant distribution unit including a first flow passage and a second flow passage, a volume of the first flow passage being greater than a volume of the second flow passage;

the flow channel switching unit is respectively connected with the first flow channel and the second flow channel, and is also used for being respectively connected with a first medium providing device, a second medium providing device, an indoor heat exchange unit and a compressor unit of the air conditioning system;

the flow channel switching unit can be switched between a first state and a second state;

in the first state, the first flow passage is used for communicating with the first medium supply device and the indoor heat exchange unit, and the second flow passage is used for communicating with the second medium supply device and the compressor unit;

in a second state, the first flow passage is used for communicating with the second medium supply device and the compressor unit, and the second flow passage is communicated with the first medium supply device and the indoor heat exchange unit;

the first medium is a liquid-phase refrigerant, and the second medium is a gas-liquid two-phase refrigerant.

In some embodiments, the first flow channel is provided with a first interface and a second interface, and the second flow channel is provided with a third interface and a fourth interface;

the flow channel switching unit is respectively connected with the first interface, the second interface, the third interface and the fourth interface;

in the first state, the first interface is used for communicating with the first medium providing device, the second interface is used for communicating with the indoor heat exchange unit, the third interface is used for communicating with the second medium providing device, and the fourth interface is used for communicating with the compressor unit;

in the second state, the first interface is used for communicating with the second medium providing device, the second interface is used for communicating with the compressor unit, the third interface is used for communicating with the first medium providing device, and the fourth interface is used for communicating with the indoor heat exchange unit.

In some embodiments, the flow path switching unit includes a first flow path switching mechanism and a second flow path switching mechanism;

the first flow channel switching mechanism is respectively connected with the first interface and the third interface, and the first flow channel switching mechanism is further used for respectively connecting with the first medium providing device and the second medium providing device;

the second flow channel switching mechanism is respectively connected with the second interface and the fourth interface, and the second flow channel switching mechanism is further used for being respectively connected with the indoor heat exchange unit and the compressor unit.

In some embodiments, the first flow path switching mechanism is a first four-way valve and the second flow path switching mechanism is a second four-way valve;

alternatively, the first and second electrodes may be,

the first flow channel switching mechanism comprises a first electromagnetic valve, a second electromagnetic valve, a first check valve, a second check valve and a three-way valve, and the second flow channel switching mechanism is a third four-way valve; the first solenoid valve with the second solenoid valve be used for respectively with first medium provides the device and connects, first check valve with the second check valve be used for respectively with the second medium provides the device and connects, first solenoid valve passes through the three-way valve respectively with first check valve with the third interface connection, the second solenoid valve respectively with the second check valve with first interface connection.

In some embodiments, the flow path switching unit is an eight-way valve integrating two four-way valves.

In some embodiments, the first flow channel is in contact with the second flow channel to allow the medium in the first flow channel to exchange heat with the medium in the second flow channel.

In some embodiments, the first flow channel and the second flow channel are nested.

In some embodiments, the first flow channel and the second flow channel are coaxially sleeved.

In some embodiments, the first flow channel is not in contact with the second flow channel.

In a second aspect, an embodiment of the present invention provides an air conditioning system, including: a first medium providing device, a second medium providing device, a compressor unit, an indoor heat exchange unit, and the refrigerant distribution adjusting device of any one of the first aspect;

the flow channel switching unit is respectively connected with the first medium supply device, the second medium supply device, the indoor heat exchange unit and the compressor unit;

in a first state, a first flow passage is communicated with the first medium supply device and the indoor heat exchange unit, and a second flow passage is communicated with the second medium supply device and the compressor unit;

in a second state, the first flow passage is communicated with the second medium supply device and the compressor unit, and the second flow passage is communicated with the first medium supply device and the indoor heat exchange unit.

In some embodiments, the first medium providing device is connected with the second medium providing device, the first medium providing device is a condenser of the air conditioning system, and the second medium providing device is a throttle of the air conditioning system.

In some embodiments, the first flow channel is in contact with the second flow channel;

and the refrigerant distribution unit of the refrigerant distribution adjusting device is a subcooler of the air conditioning system.

In a third aspect, an embodiment of the present invention provides an air conditioning system control method, which is applied to the air conditioning system described in any one of the second aspects, and the method includes:

and controlling the state of a flow channel switching unit of the air conditioning system according to the working condition of the air conditioning system.

In some embodiments, the controlling the state of the flow channel switching unit of the air conditioning system according to the operating condition of the air conditioning system includes:

when the air conditioning system works under a first refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a first state;

when the air conditioning system works in a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a second state;

the environment temperature corresponding to the first refrigeration working condition is greater than a temperature threshold value, and the environment temperature corresponding to the second refrigeration working condition is smaller than or equal to the temperature threshold value.

In some embodiments, the method further comprises:

when the refrigeration working condition of the air conditioning system is switched from the first refrigeration working condition to a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be switched from the first state to the second state;

and/or the presence of a gas in the gas,

and when the refrigeration working condition of the air conditioning system is switched from the second refrigeration working condition to the first refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the second state to the first state.

In a fourth aspect, an embodiment of the present invention provides another air conditioning system, where the air conditioning system is the air conditioning system in any one of the second aspects, and the air conditioning system includes an execution module, where the execution module is configured to:

and controlling the state of a flow channel switching unit of the air conditioning system according to the working condition of the air conditioning system.

In some embodiments, the execution module is specifically configured to:

when the air conditioning system works under a first refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a first state;

when the air conditioning system works in a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a second state;

the environment temperature corresponding to the first refrigeration working condition is greater than a temperature threshold value, and the environment temperature corresponding to the second refrigeration working condition is smaller than or equal to the temperature threshold value.

In some embodiments, the execution module is further to:

when the refrigeration working condition of the air conditioning system is switched from the first refrigeration working condition to a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be switched from the first state to the second state;

and/or the presence of a gas in the gas,

and when the refrigeration working condition of the air conditioning system is switched from the second refrigeration working condition to the first refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the second state to the first state.

In a fifth aspect, an embodiment of the present invention provides another air conditioning system, where the air conditioning system is the air conditioning system according to any one of the second aspects, and the air conditioning system includes: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps in the air conditioning system control method of any of the third aspects.

In a sixth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the air conditioning system control method according to any one of the third aspects.

In the embodiment of the invention, the two runners with different volumes and the runner switching unit are arranged, so that the adjustment of the refrigerant quantity can be realized by utilizing the volume difference of the two runners, and the switching of the refrigerant runners can be realized by controlling the state of the runner switching unit when the air conditioning system works under different working conditions, thereby realizing the adjustment of the refrigerant quantity. The embodiment of the invention effectively solves the contradiction that the quantity of the required refrigerant is different and the quantity of the refrigerant can not be adjusted under different working conditions in the existing air-conditioning system, and improves the working performance of the air-conditioning system.

Drawings

Fig. 1 to 2 are schematic diagrams of a refrigerant distribution unit in a second state and a first state according to an embodiment of the present invention;

fig. 3 to 4 are schematic diagrams of a refrigerant distribution regulating device according to an embodiment of the present invention in a second state and a first state, respectively;

fig. 5 to 6 are schematic diagrams of another refrigerant distribution regulating device provided in an embodiment of the present invention in a second state and a first state, respectively;

fig. 7 to 11 are flowcharts illustrating an air conditioning system control method according to an embodiment of the present invention;

fig. 12 is a structural diagram of an air conditioning system according to an embodiment of the present invention;

fig. 13 is a structural diagram of another air conditioning system according to an embodiment of the present invention.

Detailed Description

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 some, not all, embodiments of the present invention. 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.

As shown in fig. 1 to 6, an embodiment of the present invention provides a refrigerant distribution adjustment device applied to an air conditioning system, the refrigerant distribution adjustment device including:

a refrigerant distribution unit 1 including a first flow passage 11 and a second flow passage 12, the first flow passage 11 having a larger volume than the second flow passage 12;

the air conditioning system comprises a flow channel switching unit 2, wherein the flow channel switching unit 2 is respectively connected with a first flow channel 11 and a second flow channel 12, and the flow channel switching unit 2 is also used for being respectively connected with a first medium providing device 3, a second medium providing device 4, an indoor heat exchange unit 5 and a compressor unit 6 of the air conditioning system;

the flow channel switching unit 2 can be switched between a first state and a second state;

in the first state, the first flow passage 11 is used for being communicated with the first medium supply device 3 and the indoor heat exchange unit 5 respectively, and the second flow passage 12 is used for being communicated with the second medium supply device 4 and the compressor unit 6 respectively;

in the second state, the first flow passage 11 is used for being communicated with the second medium supply device 4 and the compressor unit 6 respectively, and the second flow passage 12 is used for being communicated with the first medium supply device 3 and the indoor heat exchange unit 5 respectively;

the first medium is a liquid-phase refrigerant, and the second medium is a gas-liquid two-phase refrigerant.

For the liquid-phase refrigerant and the gas-liquid two-phase refrigerant, the liquid-phase refrigerant is a refrigerant with higher density and higher pressure, and the gas-liquid two-phase refrigerant is a refrigerant with lower density and lower pressure.

The first medium supplying device 3 is a device for supplying a first medium, and the second medium supplying device 4 is a device for supplying a second medium. For an air conditioning system, a condenser in the air conditioning system can output high-density high-pressure liquid refrigerant, and the liquid refrigerant in the condenser can form low-density low-pressure gas-liquid two-phase refrigerant after being throttled by a throttle. Therefore, the condenser in the air conditioning system may serve as the first medium supplying device 3, and the throttle in the air conditioning system may serve as the second medium supplying device 4, but is not limited thereto.

In the refrigerant distribution unit 1, the volumes of the first flow channel 11 and the second flow channel 12 can be flexibly set by combining various working parameters and performance parameters of the air conditioning system under different working conditions.

In the present application, the volume of the flow channel refers to the actual volume of the refrigerant passing through the flow channel.

In some embodiments, the first flow channel 11 is provided with a first interface 111 and a second interface 112, the second flow channel 12 is provided with a third interface 121 and a fourth interface 122;

the flow channel switching unit 2 is respectively connected with the first interface 111, the second interface 112, the third interface 121 and the fourth interface 122;

in the first state, the first port 111 is used for communicating with the first medium providing device 3, the second port 112 is used for communicating with the indoor heat exchange unit 5, the third port 121 is used for communicating with the second medium providing device 4, and the fourth port 122 is used for communicating with the compressor unit 6;

in the second state, the first port 111 is used for communicating with the second medium providing device 4, the second port 112 is used for communicating with the compressor unit 6, the third port 121 is used for communicating with the first medium providing device 3, and the fourth port 122 is used for communicating with the indoor heat exchange unit 5.

The first connection 111 of the first flow channel 11 may be referred to as a refrigerant inlet, and the second connection 112 of the first flow channel 11 may be referred to as a refrigerant outlet; the third connection 121 of the second flow path 12 may be referred to as a refrigerant inlet, and the fourth connection 122 of the second flow path 12 may be referred to as a refrigerant outlet.

The amount of refrigerant in the air conditioning system directly affects the performance of the air conditioner, and the air conditioning system needs different amounts of refrigerant under different working conditions. The following description will be made by taking two different refrigeration conditions as examples.

Under normal refrigeration conditions, i.e., standard refrigeration conditions, such as ambient temperature not exceeding 48 ℃, the air conditioning system needs more refrigerant to achieve higher energy efficiency ratio under the standard refrigeration conditions. In this case, the first medium can flow through the second flow channel 12, and since the volume of the second flow channel 12 is smaller than or equal to the volume of the first flow channel 11, less first medium can be stored in the second flow channel 12, and more first medium can enter the air conditioning system to operate.

In a refrigeration condition with a higher ambient temperature, for example, when the ambient temperature exceeds 48 ℃, the air conditioning system needs less refrigerant, so that the air conditioner achieves higher capacity in the refrigeration condition with a high ambient temperature. At this time, the first medium may be made to flow through the first flow passage 11, and since the volume of the first flow passage 11 is greater than the volume of the second flow passage 12, it is possible to store more of the first medium in the first flow passage 11 and to make less of the first medium enter the air conditioning system to operate.

In the embodiment of the present invention, the flow channel switching unit 2 is used to realize the switching of the flow channels of the two refrigerant mediums under the two working conditions, that is, the flow channel switching unit 2 is used to realize the switching of the flow directions of the two refrigerant mediums.

In order to realize the circulation of the first medium and the second medium, the flow channel switching unit 2 needs to be connected to the first port 111, the second port 112, the third port 121, and the fourth port 122 through pipes, and the flow channel switching unit 2 needs to be connected to the first medium supplying device 3, the second medium supplying device 4, the indoor heat exchange unit 5, and the compressor unit 6 through pipes. In order to facilitate the distinction between the flow directions of the two media, the flow direction of the first medium is indicated by a solid line pipe and the flow direction of the second medium is indicated by a dotted line pipe in fig. 1 to 6. Fig. 1, 3, and 5 correspond to the two refrigerant medium flow manners when the flow path switching unit 2 is in the second state, and fig. 2, 4, and 6 correspond to the two refrigerant medium flow manners when the flow path switching unit 2 is in the first state.

In the embodiment of the invention, the state of the corresponding flow channel switching unit 2 is the second state under the standard refrigeration working condition, and the state of the corresponding flow channel switching unit 2 is the first state under the refrigeration working condition with higher external environment temperature.

In the embodiment of the invention, the two runners with different volumes and the runner switching unit are arranged, so that the adjustment of the refrigerant quantity can be realized by utilizing the volume difference of the two runners, and the switching of the refrigerant runners can be realized by controlling the state of the runner switching unit when the air conditioning system works under different working conditions, thereby realizing the adjustment of the refrigerant quantity. The embodiment of the invention effectively solves the contradiction that the quantity of the required refrigerant is different and the quantity of the refrigerant can not be adjusted under different working conditions in the existing air-conditioning system, and improves the working performance of the air-conditioning system.

In the embodiments of the present invention, how to provide the flow channel switching unit 2 to switch the refrigerant flow channels will be described in detail below by taking a plurality of embodiments as examples.

As shown in fig. 3 to 5, the flow channel switching unit 2 includes a first flow channel switching mechanism 21 and a second flow channel switching mechanism 22;

the first flow path switching mechanism 21 is connected to the first interface 111 and the third interface 121, respectively, and the first flow path switching mechanism 21 is further configured to be connected to the first medium supplying device 3 and the second medium supplying device 4, respectively;

the second flow path switching mechanism 22 is connected to the second port 112 and the fourth port 122, respectively, and the second flow path switching mechanism 22 is further configured to be connected to the indoor heat exchange unit 5 and the compressor unit 6, respectively.

The first flow path switching mechanism 21 is disposed in front of the refrigerant inlet of the refrigerant distribution unit 1, and may be understood as a forward switching mechanism; the second flow path switching mechanism 22 is disposed after the refrigerant outlet of the refrigerant distribution unit 1, and may be understood as a post-switching mechanism.

As an embodiment, as shown in fig. 3 to 4, the first flow path switching mechanism 21 may be a first four-way valve 211, and the second flow path switching mechanism 22 may be a second four-way valve 221.

The first four-way valve 211 and the second four-way valve 211 each have four ports.

The first port 2111 of the first four-way valve 211 may be connected to the first medium supplying device 3 through a pipeline, the second port 2112 of the first four-way valve 211 may be connected to the second medium supplying device 4 through a pipeline, the third port 2113 of the first four-way valve 211 may be connected to the first port 111 through a pipeline, and the fourth port 2114 of the first four-way valve 211 may be connected to the third port 121 through a pipeline.

Accordingly, the first interface 2211 of the second four-way valve 221 may be connected to the second interface 112 through a pipeline, the second interface 2212 of the second four-way valve 221 may be connected to the fourth interface 122 through a pipeline, the third interface 2213 of the second four-way valve 221 may be connected to the indoor heat exchange unit 5 through a pipeline, and the fourth interface 2214 of the second four-way valve 221 may be connected to the compressor unit 6 through a pipeline.

As shown in fig. 4, by controlling the first interface 2111 of the first four-way valve 211 to communicate with the third interface 2113 of the first four-way valve 211, the second interface 2112 of the first four-way valve 211 communicates with the fourth interface 2114 of the first four-way valve 211; and by controlling the first interface 2211 of the second four-way valve 221 to be communicated with the third interface 2213 of the second four-way valve 221, and the second interface 2212 of the second four-way valve 221 to be communicated with the fourth interface 2214 of the second four-way valve 221, the current flow path switching unit 2 can be in the first state.

As shown in fig. 3, by controlling the second port 2112 of the first four-way valve 211 to communicate with the third port 2113 of the first four-way valve 211, the first port 2111 of the first four-way valve 211 communicates with the fourth port 2114 of the first four-way valve 211; and by controlling the second interface 2212 of the second four-way valve 221 to be communicated with the third interface 2213 of the second four-way valve 221, and the first interface 2211 of the second four-way valve 221 to be communicated with the fourth interface 2214 of the second four-way valve 221, the current flow path switching unit 2 can be in the second state.

In the embodiments shown in fig. 3 to 4, the switching of the refrigerant flow paths is flexibly realized only by switching the communication state of the two four-way valve ports, and the refrigerant flow paths are simple in structure and highly operable.

As another embodiment, as shown in fig. 5 to 6, the first flow path switching mechanism 21 includes a first solenoid valve 212, a second solenoid valve 213, a first check valve 214, a second check valve 215, and a three-way valve 216, and the second flow path switching mechanism 22 is a third four-way valve 222;

the first solenoid valve 212 and the second solenoid valve 213 are respectively used for being connected with the first medium supply device 3, the first check valve 214 and the second check valve 215 are respectively used for being connected with the second medium supply device 4, the first solenoid valve 212 is respectively connected with the first check valve 214 and the third interface 121 through the three-way valve 216, and the second solenoid valve 213 is respectively connected with the second check valve 215 and the first interface 111.

The connection between the components of the first flow path switching mechanism 21 can be realized by pipelines.

Third four-way valve 222 has four ports, port one 2221 of third four-way valve 222 can be connected to second port 112 through a pipeline, port two 2222 of third four-way valve 222 can be connected to fourth port 122 through a pipeline, port three 2223 of third four-way valve 222 can be connected to indoor heat exchange unit 5 through a pipeline, and port four 2224 of third four-way valve 222 can be connected to compressor unit 6 through a pipeline.

As shown in fig. 6, by controlling the first solenoid valve 212 to be closed, the second solenoid valve 213 to be opened, and by controlling the first interface 2221 of the third four-way valve 222 to be communicated with the third interface 2223 of the third four-way valve 222, and the second interface 2222 of the third four-way valve 222 to be communicated with the fourth interface 2224 of the third four-way valve 222, the current flow path switching unit 2 can be in the first state.

As shown in fig. 5, by controlling the first solenoid valve 212 to be opened, the second solenoid valve 213 to be closed, and by controlling the second port 2222 of the third four-way valve 222 to be communicated with the third port 2223 of the third four-way valve 222, and the first port 2221 of the third four-way valve 222 to be communicated with the fourth port 2224 of the third four-way valve 222, the current flow path switching unit 2 can be in the second state.

The control principle of the second flow path switching mechanism 22, i.e., the third four-way valve 222, will not be described in detail since it is easy to understand. The control principle of the first flow path switching mechanism 21 will be specifically described below.

As can be seen from the foregoing description, the first medium supplied from the first medium supplying device 3 is a high-density high-pressure liquid refrigerant, and the second medium supplied from the second medium supplying device 4 is a low-density low-pressure gas-liquid two-phase refrigerant.

As shown in fig. 6, when the first solenoid valve 212 is closed and the second solenoid valve 213 is opened, the flow direction of the refrigerant medium is: the first medium flows to the first connection 111 through the second solenoid valve 213, and the second medium flows to the third connection 121 through the first check valve 214 and the three-way valve 216 in this order.

The first medium can flow from the second solenoid valve 213 to the second check valve 215, and the first medium cannot pass through the second check valve 215 because the second check valve 215 flows in the opposite direction to the first medium. When the second medium flows to the second check valve 215, the pressure of the first medium is higher than that of the second medium, and the pressure difference between the first medium and the second medium prevents the second medium from passing through the second check valve 215. Thus, the first medium can only flow through the second solenoid valve 213 to the first connection 111, and the second medium can only flow through the first non-return valve 214 and the three-way valve 216 to the third connection 121.

As shown in fig. 5, when the first solenoid valve 212 is open and the second solenoid valve 213 is closed, the flow direction of the refrigerant medium is: the first medium flows to the third port 121 through the first solenoid valve 212 and the three-way valve 216 in this order, and the second medium flows to the first port 111 through the second check valve 215.

The first medium can flow from the three-way valve 216 to the first non-return valve 214, and since the first non-return valve 214 flows in the opposite direction to the first medium, the first medium cannot pass through the first non-return valve 214. When the second medium flows to the first check valve 214, the pressure of the first medium is greater than that of the second medium, and the pressure difference between the first medium and the second medium prevents the second medium from passing through the first check valve 214. Thus, the first medium can only flow to the third connection 121 via the first solenoid valve 212 and the three-way valve 216, and the second medium can only flow to the first connection 111 via the second non-return valve 215.

In the embodiment shown in fig. 5 to 6, the refrigerant flow path is flexibly switched by using the pressure difference between two media, only by switching the opening and closing states of two solenoid valves and switching the communication state of one four-way valve port, and the refrigerant flow path is simple in structure and high in operability. In the embodiment shown in fig. 5 and 6, the control of the first flow path switching mechanism 21 is simpler, the installation space occupied by the first flow path switching mechanism 21 is smaller, and the cost required for the first flow path switching mechanism 21 is also lower.

In addition, the flow path switching unit 2 may also be an eight-way valve integrating two four-way valves, and the control method and the control principle thereof are substantially the same as those of the embodiment using two independent four-way valves, which can be seen from the foregoing related description, and since it is easy to understand and implement, it is not specifically described in the embodiment of the present invention.

The above embodiment of the flow path switching unit 2 is merely a typical example, and other flow path switching units capable of switching refrigerant flow paths are also applicable to the embodiment of the present invention.

In the embodiment of the present invention, the refrigerant distribution unit 1 may be installed in various ways, and will be described in detail below.

In the embodiment of the present invention, the first flow channel 11 and the second flow channel 12 may be independently disposed, or the first flow channel 11 and the second flow channel 12 may not be in contact with each other, and the medium in the first flow channel 11 and the medium in the second flow channel 12 do not exchange heat; the first flow channel 11 and the second flow channel 12 may be disposed in contact with each other, and the medium in the first flow channel 11 and the medium in the second flow channel 12 may exchange heat through the contact portion. In the latter case, the refrigerant distribution unit 1 acts in practice as a heat exchanger for a first medium and a second medium.

The first flow channel 11 may be in direct contact with the second flow channel 12, for example, a tube wall of the first flow channel 11 abuts against a tube wall of the second flow channel 12, or the first flow channel 11 and the second flow channel 12 have a common tube wall. The first flow channel 11 may be in indirect contact with the second flow channel 12, for example, a heat conductive member may be provided between the first flow channel 11 and the second flow channel 12.

The refrigerant distribution unit 1 according to the embodiment of the present invention may be used as a subcooler in an air conditioning system, considering that the subcooler originally provided in the air conditioning system is a refrigerant-refrigerant heat exchanger. Therefore, the air conditioning system to be provided with the refrigerant distribution adjusting device can omit the arrangement of a subcooler, so that the parts required to be added by the air conditioning system using the refrigerant distribution adjusting device are as few as possible, the required cost can be further reduced, and the structure of the whole air conditioning system is simpler.

In some embodiments, the first flow channel 11 is nested with the second flow channel 12.

The first flow channel 11 may be sleeved outside the second flow channel 12 (see fig. 1 to 6), or the second flow channel 12 may be sleeved outside the first flow channel 11.

With the above arrangement, the contact area between the first flow channel 11 and the second flow channel 12 can be increased, thereby improving the heat exchange efficiency between the first medium and the second medium.

The first flow channel 11 and the second flow channel 12 may be coaxially sleeved or not coaxially sleeved. For the coaxial sleeving mode, the heat exchange between the first medium and the second medium is more uniform.

The above is an example of the implementation of the refrigerant distribution regulating device provided by the embodiment of the present invention.

The embodiment of the invention also provides an air conditioning system. As shown in fig. 3 to 6, the air conditioning system includes: the first medium providing device 3, the second medium providing device 4, the compressor unit 5, the indoor heat exchange unit 6 and any one of the refrigerant distribution adjusting devices in the above-described embodiment of the invention;

the flow channel switching unit 2 is respectively connected with the first medium supply device 3, the second medium supply device 4, the indoor heat exchange unit 5 and the compressor unit 6;

in the first state, the first flow passage 11 is communicated with the first medium supply device 3 and the indoor heat exchange unit 5 respectively, and the second flow passage 12 is communicated with the second medium supply device 4 and the compressor unit 6 respectively;

in the second state, the first flow passage 11 communicates with the second medium supplying device 4 and the compressor unit 6, respectively, and the second flow passage 12 communicates with the first medium supplying device 3 and the indoor heat exchange unit 5, respectively.

In some embodiments, the first flow channel 11 is provided with a first interface 111 and a second interface 112, the second flow channel 12 is provided with a third interface 121 and a fourth interface 122;

the flow channel switching unit 2 is respectively connected with the first interface 111, the second interface 112, the third interface 121 and the fourth interface 122;

in the first state, the first port 111 is communicated with the first medium supply device 3, the second port 112 is communicated with the indoor heat exchange unit 5, the third port 121 is communicated with the second medium supply device 4, and the fourth port 122 is communicated with the compressor unit 6;

in the second state, the first port 111 communicates with the second medium supplying device 4, the second port 112 communicates with the compressor unit 6, the third port 121 communicates with the first medium supplying device 3, and the fourth port 122 communicates with the indoor heat exchange unit 5.

Wherein the compressor unit 6 may comprise a compressor and a gas-liquid separator, and the second interface 112 may be connected with the gas-liquid separator in the compressor unit 6. Thus, the second medium can be subjected to gas-liquid separation by the gas-liquid separator before being delivered to the compressor.

In some embodiments, the first medium providing device 3 is connected with the second medium providing device 4, the first medium providing device 3 is a condenser of an air conditioning system, and the second medium providing device 4 is a restrictor of the air conditioning system.

In some embodiments, the first flow channel 11 is in contact with the second flow channel 12;

the refrigerant distribution unit 1 of the refrigerant distribution adjusting device is a subcooler of an air conditioning system.

For the specific implementation of the embodiment of the present invention, reference may be made to the related descriptions of the refrigerant distribution adjusting device in the above embodiments of the present invention, and the same beneficial effects can be achieved, so that repeated descriptions are omitted.

The embodiment of the invention also provides an air conditioning system control method, which is applied to any air conditioning system provided by the embodiment of the invention. As shown in fig. 7, the air conditioning system control method includes:

step 201: and controlling the state of a flow channel switching unit of the air conditioning system according to the working condition of the air conditioning system.

According to the foregoing, the amount of refrigerant in the air conditioning system directly affects the performance of the air conditioner, and the air conditioning system requires different amounts of refrigerant under different working conditions. In view of this, the air conditioning system control method according to the embodiment of the present invention provides a method for adjusting the amount of refrigerant of the air conditioning system according to the operating condition of the air conditioning system.

Specifically, in this step, the state of the flow channel switching unit of the air conditioning system is controlled according to the working condition of the air conditioning system, so as to adjust the amount of refrigerant in the air conditioning system.

The control method is suitable for any two working conditions with different refrigerant demands, can be used for adjusting the refrigerant quantity under two different refrigeration working conditions, can also be used for adjusting the refrigerant quantity under two different heating working conditions, and can also be used for adjusting the refrigerant quantity between the refrigeration working condition and the heating working condition.

The following description will be made in detail by taking the above control method for two different refrigeration conditions as an example.

As shown in fig. 8, the air conditioning system control method includes:

step 201 a: when the air conditioning system works under a first refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a first state;

step 201 b: when the air conditioning system works in a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a second state;

the environment temperature corresponding to the first refrigeration working condition is greater than a temperature threshold value, and the environment temperature corresponding to the second refrigeration working condition is smaller than or equal to the temperature threshold value.

In the embodiment of the invention, the first refrigeration working condition can be understood as a refrigeration working condition with higher ambient temperature, the second refrigeration working condition can be understood as a standard refrigeration working condition, and the temperature threshold value can be 48 ℃.

In some embodiments, as shown in fig. 9, after step 201a, the method further comprises:

step 202 a: and when the refrigeration working condition of the air conditioning system is switched from the first refrigeration working condition to the second refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the first state to the second state.

In some embodiments, as shown in fig. 10-11, after step 201b, the method further comprises:

step 202 b: and when the refrigeration working condition of the air conditioning system is switched from the second refrigeration working condition to the first refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the second state to the first state.

The embodiment of the invention also provides an air conditioning system, which is any one of the air conditioning systems provided by the embodiments of the invention. As shown in fig. 12, the air conditioning system 300 includes an execution module 301, and the execution module 301 is configured to:

and controlling the state of a flow channel switching unit of the air conditioning system according to the working condition of the air conditioning system.

In some embodiments, the execution module 301 is specifically configured to:

when the air conditioning system works under a first refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a first state;

when the air conditioning system works in a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a second state;

the environment temperature corresponding to the first refrigeration working condition is greater than a temperature threshold value, and the environment temperature corresponding to the second refrigeration working condition is smaller than or equal to the temperature threshold value.

In some embodiments, the execution module 301 is further configured to:

when the refrigeration working condition of the air conditioning system is switched from the first refrigeration working condition to a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be switched from the first state to the second state;

and/or the presence of a gas in the gas,

and when the refrigeration working condition of the air conditioning system is switched from the second refrigeration working condition to the first refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the second state to the first state.

It should be noted that, in the embodiment of the present invention, the air conditioning system 300 may be an air conditioning system according to any implementation manner in the method embodiment, and any implementation manner of the air conditioning system in the method embodiment may be implemented by the air conditioning system 300 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.

The embodiment of the invention also provides another air conditioning system, which is any one of the air conditioning systems provided by the embodiments of the invention. As shown in fig. 13, the air conditioning system 500 further includes: a processor 501, a memory 502, and a bus interface. The bus architecture may include any number of interconnected buses and bridges, among which are linked together by various circuits, one or more of which is represented by processor 501 and memory represented by memory 502. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The processor 501 is responsible for managing the bus architecture and general processing, and the memory 502 may store data used by the processor 501 in performing operations.

Wherein, the processor 501 is configured to:

and controlling the state of a flow channel switching unit of the air conditioning system according to the working condition of the air conditioning system.

In some embodiments, the processor 501, when executing the step of controlling the state of the flow channel switching unit of the air conditioning system according to the operating condition of the air conditioning system, is configured to:

when the air conditioning system works under a first refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a first state;

when the air conditioning system works in a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be in a second state;

the environment temperature corresponding to the first refrigeration working condition is greater than a temperature threshold value, and the environment temperature corresponding to the second refrigeration working condition is smaller than or equal to the temperature threshold value.

In some embodiments, processor 501 is further configured to:

when the refrigeration working condition of the air conditioning system is switched from the first refrigeration working condition to a second refrigeration working condition, controlling a flow channel switching unit of the air conditioning system to be switched from the first state to the second state;

and/or the presence of a gas in the gas,

and when the refrigeration working condition of the air conditioning system is switched from the second refrigeration working condition to the first refrigeration working condition, controlling the flow channel switching unit of the air conditioning system to be switched from the second state to the first state.

It should be noted that, in the embodiment of the present invention, the air conditioning system 500 may be an air conditioning system according to any implementation manner in the method embodiment, and any implementation manner of the air conditioning system in the method embodiment may be implemented by the air conditioning system 500 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the foregoing data offloading transmission method embodiment corresponding to the MN or the SN, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.