Outdoor heat exchanger, cooling medium distribution method, and cooling medium distribution apparatus

Abstract

The present disclosure relates to the technical field of air conditioners, and particularly relates to an outdoor heat exchanger, a cooling medium distribution method and a cooling medium distribution device. The present disclosure provides an outdoor heat exchanger, which comprises a distributor, a plurality of heat exchange channels, a liquid collecting channel, a temperature detection member and a controller. The distributor comprises a distributor main body and a plurality of valve groups. The distributor main body has an inlet end and a distribution end. The inlet end is provided with a main flow channel, and the distribution end is provided with a plurality of distribution flow channels. The input ends of the distribution flow channels are in communication with the output end of the main flow channel. The valve groups are arranged at the distribution end and correspond to the distribution flow channels, and are used for controlling the opening degree of the distribution flow channels. The outlet end of each heat exchange channel is provided with a temperature detection member, which is used for monitoring the temperature of the cooling medium. The controller controls the action of the valve groups and adjusts the opening degree of the corresponding distribution flow channels. The present disclosure can realize uniform distribution of the cooling medium, so that the cooling medium can be fully heat exchanged in the heat exchange channel, and the heat exchange efficiency of the outdoor heat exchanger is improved.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, and in particular to an outdoor heat exchanger, a method for distributing cooling medium, and a device for distributing cooling medium. Background Technology

[0002] The outdoor heat exchanger is the core component of an air conditioning system that enables heat exchange. It is used to condense the high-temperature, high-pressure gaseous cooling medium discharged from the compressor into a medium-temperature, high-pressure liquid cooling medium, providing the energy basis for subsequent heat exchange processes.

[0003] In existing technologies, outdoor heat exchangers typically include a distributor, heat exchange channels, and liquid collection channels. Cooling medium is distributed to each heat exchange channel via the distributor to achieve heat exchange. However, in actual operation, the distributor of the outdoor heat exchanger is prone to uneven gas distribution, and the gas distribution accuracy cannot be dynamically adjusted. This causes some heat exchange channels to become overheated or undercooled due to uneven distribution of cooling medium flow, affecting the heat exchange efficiency of the outdoor heat exchanger. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides an outdoor heat exchanger, a method for distributing cooling medium, and a device for distributing cooling medium. By setting up valve groups, temperature detection elements, and controllers in the distributor, the cooling medium is evenly distributed so that the cooling medium can be fully heat-exchanged in the heat exchange channel, thereby improving the heat exchange efficiency of the outdoor heat exchanger.

[0005] According to a first aspect of the present disclosure, an outdoor heat exchanger is provided, comprising:

[0006] The distributor includes a distributor body and multiple valve assemblies. The distributor body has an inlet end and a branch end in the axial direction. The inlet end has a main flow channel for receiving the cooling medium. The branch end has multiple branch flow channels, and the input end of the branch flow channels is connected to the output end of the main flow channel. Multiple valve assemblies are located at the branch end and correspond to each branch flow channel. The valve assemblies are configured to control the opening degree of each branch flow channel.

[0007] Multiple heat exchange channels, each corresponding to a branch channel, and the inlet end of the heat exchange channel is connected to the outlet end of the corresponding branch channel;

[0008] The liquid collecting channel has its inlet end connected to the outlet end of each heat exchange channel.

[0009] Temperature detection element: Each heat exchange channel outlet end is equipped with a corresponding temperature detection element, which is used to monitor the temperature of the cooling medium at the outlet end of the heat exchange channel.

[0010] The controller is connected to the temperature sensor and valve assembly. The controller is configured to control the valve assembly based on the temperature detected by the temperature sensor, and adjust the opening of the corresponding flow channel.

[0011] This disclosure provides an outdoor heat exchanger. The distributor, including a main body, allows the cooling medium to collect in the main channel of the main body and flow to the branching end. Upon reaching the branching end, the cooling medium is distributed into multiple branching channels, allowing for more uniform distribution of the cooling medium before it enters the heat exchange channels compared to a traditional flute-shaped air collecting pipe. The distributor also includes multiple valve assemblies located at the branching end and corresponding to each branching channel. This allows the opening of each branching channel to be independently controlled by the corresponding valve assembly, enabling independent adjustment of the cooling medium flow rate in each branching channel.

[0012] The cooling medium flows through the branch channels and then into the corresponding heat exchange channels, where it exchanges heat with the outside environment. Each heat exchange channel has a temperature sensor at its outlet. The controller is connected to these temperature sensors and valve assemblies, allowing the temperature sensors at each heat exchange channel outlet to monitor the cooling medium's temperature in real time as it flows through the channels and transmit the detected temperature signal to the controller. The controller then controls the valve assembly based on the temperature detected by the temperature sensors.

[0013] Therefore, when the heat exchange capacity of each heat exchange channel is different, the controller can automatically adjust the opening of the corresponding valve group according to the temperature at the outlet end, thereby dynamically adjusting the flow rate of the cooling medium in the distribution channel, reducing the flow deviation and heat exchange difference between each heat exchange channel, and avoiding the phenomenon of some heat exchange channels being overheated or some heat exchange channels being undercooled due to uneven distribution of cooling medium flow in related technologies. This allows the cooling medium to achieve sufficient heat exchange in the heat exchange channel, and the cooling medium temperature at the outlet end of each heat exchange channel tends to be consistent, thereby reducing the heat exchange efficiency loss caused by uneven local liquid supply in the heat exchange channel and improving the overall heat exchange efficiency of the outdoor heat exchanger.

[0014] Furthermore, by reducing the flow deviation and heat exchange difference between each heat exchange channel, the cooling medium temperature at the outlet of each heat exchange channel tends to be consistent, which can avoid problems such as component aging and increased operating noise caused by uneven temperature, thereby improving the service life and user experience of the air conditioner.

[0015] Therefore, the outdoor heat exchanger provided in this disclosure can independently and dynamically adjust the flow rate of the cooling medium in each branch channel, reduce the flow deviation and heat exchange difference between each heat exchange channel, so that the cooling medium can be fully heat exchanged in the heat exchange channel, and the temperature of the cooling medium at the outlet of each heat exchange channel tends to be uniform, reducing the heat exchange efficiency loss caused by uneven distribution of local cooling medium, thereby improving the heat exchange efficiency of the entire outdoor heat exchanger, and avoiding problems such as component aging and increased operating noise caused by uneven temperature, thereby improving the service life and user experience of the air conditioner.

[0016] In some embodiments, the valve assembly includes a plugging member that extends and retracts relative to the corresponding diversion channel in the radial direction of the diversion channel to adjust the opening degree of the corresponding diversion channel;

[0017] The valve assembly also includes a drive unit, which has an electromagnetic drive section with a cavity, and a portion of the sealing component is disposed within the cavity.

[0018] The electromagnetic drive unit is connected to the controller and is configured to control the expansion and contraction of the sealing element relative to the corresponding diversion channel when energized.

[0019] In some embodiments, the outdoor heat exchanger further includes a pressure sensing element disposed in the main flow channel to monitor the pressure of the cooling medium in the main flow channel.

[0020] The controller is connected to the pressure sensor and is configured to control the valve assembly to adjust the opening of the corresponding flow channel based on the detection results of the temperature sensor and the pressure sensor.

[0021] In some embodiments, the inlet end and the branch end are located at both ends of the distributor body in the axial direction, each branch channel extends in the axial direction of the distributor body, and the output end of each branch channel is located on the end face of the branch end.

[0022] Along the circumference of the distributor body, multiple flow channels are distributed at intervals on the flow splitting end.

[0023] In some embodiments, the diameter of each branch channel is the same.

[0024] In a second aspect, the present disclosure provides a method for distributing a cooling medium, applied to an outdoor heat exchanger as provided in any embodiment of the first aspect; the outdoor heat exchanger includes a distributor and a plurality of heat exchange channels, the distributor having a plurality of branch channels in its branch end; the outlet end of each heat exchange channel is connected to the output end of a branch channel, and the outdoor heat exchanger is provided with a valve group at the position corresponding to each branch channel.

[0025] The allocation method includes the following steps:

[0026] Step S100: Collect the temperature Ti of the cooling medium at the outlet end of multiple heat exchange channels, and obtain the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channels.

[0027] Step S200: Set the temperature reference value ΔT between the cooling medium temperature and the condensation temperature T0 at the outlet end of the heat exchange channel;

[0028] Step S300: Determine the relative magnitudes of temperature Ti and condensation temperature T0;

[0029] Step S310: If the temperature Ti is less than the condensation temperature T0, calculate the absolute value of the difference between the actual deviation ΔTi of temperature Ti and condensation temperature T0 and the temperature reference value ΔT, and determine whether the absolute value is greater than the preset value Ta.

[0030] When the absolute value is greater than the preset value Ta, the valve group corresponding to the heat exchange channel is controlled according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT to increase or decrease the opening of the branch channel until the absolute value is less than or equal to the preset value Ta.

[0031] Step S320: If the temperature Ti is greater than or equal to the condensing temperature T0, control the valve group corresponding to the heat exchange channel to reduce the opening of the branch channel until the temperature Ti is less than the condensing temperature T0.

[0032] This disclosure provides a method for distributing a cooling medium. Step S100 involves real-time acquisition of the cooling medium temperature Ti and condensation temperature T0 at the outlet of the heat exchange channel, providing a data basis for subsequent flow rate adjustment and enabling precise adjustment of the branch channel opening. Step S200 provides a quantitative benchmark for calculating the actual deviation ΔTi between temperature Ti and condensation temperature T0. This provides a comparative benchmark for subsequently determining whether there is a deviation between temperature Ti and condensation temperature T0, and the degree of deviation of the actual deviation ΔTi, facilitating control of increasing or decreasing the branch channel opening.

[0033] When Ti is less than the condensing temperature T0 during the use of an outdoor heat exchanger, it indicates that the cooling medium has cooled down to below the condensing temperature T0 in the heat exchange channel, which means that subcooling has occurred.

[0034] When Ti is less than the condensing temperature T0 and its absolute value is greater than the preset value Ta, it means that the actual deviation ΔTi deviates too much from the temperature reference value ΔT. Excessive deviation will lead to increased energy consumption and decreased energy efficiency ratio of the outdoor heat exchanger. Therefore, it is necessary to control the valve group corresponding to the heat exchange channel through the controller to increase or decrease the opening of the branch channel until its absolute value is less than or equal to the preset value Ta.

[0035] When the temperature Ti is greater than or equal to the condensation temperature T0, it means that the cooling medium has not yet cooled to the condensation temperature or has just cooled down in the heat exchange channel. At this time, the cooling medium may not have undergone sufficient heat exchange in the heat exchange channel, and there may be gaseous cooling medium in the cooling medium, which can easily reduce the stability of the operation of subsequent components. At this time, the controller controls the valve group corresponding to the heat exchange channel to reduce the opening of the branch channel, reducing the flow rate of the cooling medium flowing into the heat exchange channel. After the flow rate is reduced, the flow velocity of the cooling medium in the heat exchange channel decreases, the residence time is prolonged, and the heat exchange with the outside is more complete, so that the outlet temperature Ti gradually decreases until Ti is less than the condensation temperature T0.

[0036] This disclosure provides a cooling medium distribution method that determines whether a heat exchange channel is undercooled by collecting the temperature Ti at the outlet of each heat exchange channel and comparing it with the condensation temperature T0. Different control strategies are then employed to achieve independent dynamic adjustment of the opening degree of each branch channel. This distribution method ensures both control accuracy and response speed. Simultaneously, it makes the temperature of the cooling medium at the outlet of each heat exchange channel more uniform, reducing flow deviations and heat exchange differences between channels, minimizing heat exchange efficiency losses caused by uneven local liquid supply, and thus improving the overall heat exchange efficiency of the outdoor heat exchanger.

[0037] In some embodiments, the preset value Ta is any fixed value that is greater than 0°C and less than or equal to 2°C.

[0038] In some embodiments, in step S310, when the absolute value is greater than a preset value Ta, the valve group corresponding to the heat exchange channel is controlled according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT to increase or decrease the opening of the branch channel, specifically including:

[0039] Step S311: Determine the magnitude of the actual deviation ΔTi and the temperature reference value ΔT;

[0040] Step S312: If the actual deviation ΔTi is greater than the temperature reference value ΔT, then control the valve group corresponding to the heat exchange channel to increase the opening of the branch channel;

[0041] Step S313: If the actual deviation ΔTi is less than the temperature reference value ΔT, then control the valve group corresponding to the heat exchange channel to reduce the opening of the branch channel until the absolute value is less than or equal to the preset value Ta.

[0042] In some embodiments, the temperature reference value ΔT is any fixed value between 3°C and 8°C.

[0043] In some embodiments, the temperature reference value ΔT between the cooling medium temperature and the condensation temperature T0 at the outlet end of the heat exchange channel in step S200 specifically includes:

[0044] Step S210: Define at least two temperature ranges for the environment where the outdoor heat exchanger is located. The temperature ranges do not overlap. Each temperature range corresponds to a temperature reference value ΔT, and the higher temperature range corresponds to a larger temperature reference value ΔT.

[0045] Step S220: Collect the ambient temperature Th at the location of the outdoor heat exchanger;

[0046] Step S230: Determine which temperature range the ambient temperature Th belongs to, and determine the temperature reference value ΔT between temperature Ti and condensation temperature T0 based on the temperature range to which it belongs.

[0047] In some embodiments, the distributor has a main flow channel in its inlet end, and the outdoor heat exchanger also includes a pressure sensing element for monitoring the pressure P of the cooling medium in the main flow channel.

[0048] Step S100, which involves obtaining the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel, specifically includes:

[0049] Acquisition pressure P;

[0050] The condensation temperature T0 is determined based on the pressure P.

[0051] In some embodiments, the allocation method includes the following steps before real-time acquisition of pressure P:

[0052] Establish a mapping relationship between the pressure of the cooling medium in the main channel and each condensation temperature T0. In this mapping relationship, the cooling medium has multiple different pressures, and each pressure corresponds to a condensation temperature T0.

[0053] In some embodiments, the allocation method includes the following steps:

[0054] After adjusting the opening of the diversion channel, repeat steps S100 to S300.

[0055] Thirdly, embodiments of this disclosure provide a cooling medium distribution device applied to an outdoor heat exchanger as provided in any embodiment of the first aspect; the outdoor heat exchanger includes a distributor and multiple heat exchange channels, the distributor having multiple branch channels in its branching end; the outlet end of each heat exchange channel is connected to the output end of a branch channel, and the outdoor heat exchanger is provided with a valve group at the position corresponding to each branch channel; the distribution device includes:

[0056] The first acquisition module is used to acquire the temperature Ti of the cooling medium at the outlet end of multiple heat exchange channels.

[0057] The acquisition module is used to acquire the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel.

[0058] The data module contains a preset temperature reference value ΔT for the cooling medium temperature and condensation temperature T0 at the outlet end of the heat exchange channel.

[0059] The first judgment module is used to determine the magnitude of temperature Ti and condensation temperature T0.

[0060] The calculation module is used to calculate the absolute value of the difference between the actual deviation ΔTi between temperature Ti and condensation temperature T0 and the temperature reference value ΔT when temperature Ti is less than condensation temperature T0.

[0061] The controller is used to control the valve group corresponding to the heat exchange channel to increase or decrease the opening of the branch channel according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT when the absolute value is greater than the preset value Ta; or, the controller is used to control the valve group corresponding to the heat exchange channel to decrease the opening of the branch channel when the temperature Ti is greater than or equal to the condensing temperature T0, until the temperature Ti is less than the condensing temperature T0.

[0062] This disclosure provides a cooling medium distribution device. Through the configuration of a first acquisition module and an acquisition module, the first acquisition module and the acquisition module can collect the temperature Ti and condensation temperature T0 at the outlet of each heat exchange channel in real time, providing an accurate data basis for subsequent judgment and calculation. Through the configuration of a first judgment module and a controller, the temperature Ti at the outlet of each heat exchange channel can be compared with the condensation temperature T0. Based on the judgment result, the controller sends control commands to the valve group corresponding to the heat exchange channel, causing the valve group to actuate to increase or decrease the opening of the branch channel. This reduces the flow deviation and heat exchange difference between the various heat exchange channels, ensuring sufficient heat exchange of the cooling medium within the heat exchange channels. The cooling medium temperature at the outlet of each heat exchange channel tends to be uniform, reducing heat exchange efficiency loss caused by uneven local distribution of the cooling medium, thereby improving the overall heat exchange efficiency of the outdoor heat exchanger.

[0063] In some embodiments, the dispensing device further includes a second judgment module, which is used to determine the magnitude of the actual deviation ΔTi and the temperature reference value ΔT;

[0064] The controller is used to control the valve group corresponding to the heat exchange channel when the actual deviation ΔTi is greater than the temperature reference value ΔT, so as to increase the opening of the branch channel;

[0065] Alternatively, the controller is used to control the valve group corresponding to the heat exchange channel when the actual deviation ΔTi is less than the temperature reference value ΔT, so as to reduce the opening of the branch channel until the absolute value is less than or equal to the preset value Ta.

[0066] In some embodiments, the dispensing device further includes:

[0067] The first data processing module is used to define at least two temperature ranges for the environment where the outdoor heat exchanger is located. The temperature ranges do not overlap with each other. Each temperature range corresponds to a temperature reference value ΔT, and the higher temperature range corresponds to a larger temperature reference value ΔT.

[0068] The second acquisition module is used to acquire the ambient temperature Th of the outdoor heat exchanger.

[0069] The first determining module is used to determine which temperature range the ambient temperature Th belongs to, and to determine the temperature reference value ΔT between the temperature Ti and the condensation temperature T0 based on the temperature range to which it belongs.

[0070] In some embodiments, the dispensing device further includes:

[0071] The third acquisition module is used to acquire the pressure P of the cooling medium in the main channel of the distributor.

[0072] The second determining module is used to determine the condensation temperature T0 based on the pressure P.

[0073] In some embodiments, the distribution device further includes a second data processing module, which is used to formulate a mapping relationship between the pressure of the cooling medium in the main channel and each condensation temperature T0. In the mapping relationship, the cooling medium has multiple different pressures, and each pressure corresponds to a condensation temperature T0.

[0074] Fourthly, embodiments of this disclosure also include a cooling medium distribution device, comprising:

[0075] processor;

[0076] Memory is used to store the processor's executable instructions;

[0077] The processor is configured to execute, according to executable instructions, a method for distributing cooling medium as provided in any embodiment of the second aspect.

[0078] The cooling medium distribution device provided in this disclosure, since it is used to execute the cooling medium distribution method provided in any embodiment of the second aspect, has the same beneficial effects, namely, ensuring both control accuracy and control response speed. Simultaneously, it enables the temperature of the cooling medium at the outlet of each heat exchange channel to tend to be uniform, reducing flow deviation and heat exchange differences between each heat exchange channel, reducing heat exchange efficiency loss caused by uneven local liquid supply, thereby improving the overall heat exchange efficiency of the outdoor heat exchanger.

[0079] Furthermore, through the collaboration of the processor and memory, the allocation method can be implemented as a software program on a general-purpose hardware platform, eliminating the need for custom-designed hardware logic circuits for the allocation device. This implementation reduces the hardware manufacturing cost of the allocation device, improves its versatility, and facilitates subsequent upgrades and maintenance of the allocation method. When optimization of the allocation method or the addition of new control logic is required, only the executable instructions in memory need to be updated, without replacing the hardware.

[0080] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0081] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0082] Figure 1 This is a structural schematic diagram of an outdoor heat exchanger in related technologies;

[0083] Figure 2 This is a schematic diagram of the structure of an outdoor heat exchanger provided in an embodiment of this disclosure;

[0084] Figure 3 This is a cross-sectional view of a distributor for an outdoor heat exchanger provided in an embodiment of this disclosure;

[0085] Figure 4 This is a top view of a distributor for an outdoor heat exchanger provided in an embodiment of this disclosure;

[0086] Figure 5 This is a cross-sectional view of a distributor for an outdoor heat exchanger provided in another embodiment of this disclosure;

[0087] Figure 6 This is a flowchart of a cooling medium distribution method provided in an embodiment of this disclosure;

[0088] Figure 7 This is a flowchart of step S310 of a cooling medium distribution method provided in an embodiment of this disclosure;

[0089] Figure 8 This is a flowchart of step S200 in a cooling medium distribution method provided in this embodiment of the present disclosure.

[0090] Figure label:

[0091] 100 - Outdoor heat exchanger; 110 - Distributor; 111 - Distributor body; 1111 - Inlet; 1111a - Main flow channel; 1112 - Branching end; 1112a - Branching flow channel; 112 - Valve assembly; 1121 - Sealing component; 1122 - Driving component; 1122a - Electromagnetic drive unit; 1123 - Elastic reset component; 120 - Heat exchange channel; 130 - Liquid collection channel;

[0092] X-axis;

[0093] Y-radial. Detailed Implementation

[0094] Some embodiments of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0095] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0096] The outdoor heat exchanger is the core component of an air conditioning system that enables heat exchange. It is used to condense the high-temperature, high-pressure gaseous cooling medium discharged from the compressor into a medium-temperature, high-pressure liquid cooling medium, providing the energy basis for subsequent heat exchange processes.

[0097] See Figure 1 In related technologies, an outdoor heat exchanger 100a typically has a heat exchange channel 120a, a distributor 110a, and a liquid collection channel 130a. The cooling medium is distributed to each heat exchange channel 120a through the distributor 110a to achieve heat exchange. The distributor 110a typically adopts a flute-shaped gas collection pipe. The flute-shaped gas collection pipe usually achieves gas distribution by opening several through holes in the pipe body.

[0098] However, in actual operation, the working environment of the outdoor heat exchanger 100a is complex and dynamic. For example, parameters such as compressor operating frequency, outdoor ambient temperature, and cooling medium flow rate will fluctuate. The flute-shaped gas collection pipe cannot adapt to these dynamic changes, which can easily lead to uneven gas distribution. Uneven gas distribution can easily lead to uneven distribution of cooling medium flow rate in the heat exchange channel 120a, resulting in some heat exchange channels 120a being overheated or undercooled.

[0099] Specifically, when there is insufficient cooling medium in the heat exchange channel 120a, overcooling will occur, resulting in wasted heat exchange area and increased energy consumption. When there is excessive cooling medium in the heat exchange channel 120a, the cooling medium will not exchange heat sufficiently in the heat exchange channel 120a. Both of these will reduce the heat exchange efficiency of the outdoor heat exchanger 100a.

[0100] In addition, uneven distribution of cooling medium flow rate in heat exchange channel 120a will lead to uneven temperature distribution in heat exchange channel 120a. Long-term operation will cause problems such as accelerated component aging and increased operating noise, affecting the service life and user experience of the air conditioner.

[0101] Therefore, how to dynamically adjust the flow rate of the cooling medium in the distributor to avoid uneven distribution of the cooling medium, thereby improving the heat exchange efficiency of the outdoor heat exchanger and the service life of the air conditioner, has become an urgent technical problem to be solved.

[0102] In view of this, the present disclosure provides an outdoor heat exchanger, a method for distributing cooling medium, and a device for distributing cooling medium. Through the configuration of valve groups, temperature sensors, and controllers within the distributor, the flow rate of the cooling medium in each branch channel can be independently and dynamically adjusted, reducing flow deviations and heat exchange differences between the various heat exchange channels. This ensures that the cooling medium receives sufficient heat exchange within the heat exchange channels, and the temperature of the cooling medium at the outlet of each heat exchange channel tends to be uniform, reducing heat exchange efficiency losses caused by uneven distribution of local cooling medium, thereby improving the overall heat exchange efficiency of the outdoor heat exchanger. Furthermore, it can avoid problems such as component aging and increased operating noise caused by uneven temperature, thereby improving the service life and user experience of the air conditioner.

[0103] See Figure 2 , Figure 3 and Figure 4 This disclosure provides an outdoor heat exchanger 100b, including a distributor 110b, multiple heat exchange channels 120b, a liquid collection channel 130, a temperature sensing element, and a controller. The distributor 110b receives cooling medium and supplies it to the multiple heat exchange channels 120b. The multiple heat exchange channels 120b carry the cooling medium and facilitate heat exchange between the cooling medium and the surrounding environment. The liquid collection channel 130 collects the cooling medium flowing out of each heat exchange channel 120b.

[0104] The distributor 110b includes a distributor body 111 and multiple valve assemblies 112. The distributor body 111 has an inlet end 1111 and a branch end 1112 in the axial direction X. The inlet end 1111 has a main flow channel 1111a for receiving cooling medium. The branch end 1112 has multiple branch flow channels 1112a, and the input end of the branch flow channel 1112a is connected to the output end of the main flow channel 1111a.

[0105] Multiple valve groups 112 are provided at the flow branch end 1112 and correspond to each flow branch channel 1112a. The valve groups 112 are configured to control the opening degree of each flow branch channel 1112a.

[0106] Each heat exchange channel 120b corresponds to a branch channel 1112a, and the inlet end of the heat exchange channel 120b is connected to the outlet end of the corresponding branch channel 1112a.

[0107] The inlet end of the liquid collecting channel 130 is connected to the outlet end of each heat exchange channel 120b.

[0108] When the outdoor heat exchanger 100b is running, the cooling medium enters the main flow channel 1111a from the inlet end 1111 of the distributor body 111. After the cooling medium is collected in the main flow channel 1111a, it flows to the branch end 1112 and is distributed into multiple branch flow channels 1112a. The branch flow channels 1112a are designed to ensure that the cooling medium is evenly distributed before entering the heat exchange channel 120b.

[0109] The opening degree of each branch flow channel 1112a is controlled by a corresponding valve group 112. Since each branch flow channel 1112a is equipped with a corresponding valve group 112, the cooling medium flow rate of each branch flow channel 1112a can be adjusted independently.

[0110] After flowing through the distribution channel 1112a, the cooling medium enters the corresponding heat exchange channel 120b, where it exchanges heat with the outside environment. After completing the heat exchange, the cooling medium flows out from the outlet end of the heat exchange channel 120b, collects in the liquid collection channel 130, and finally enters other components of the refrigeration system.

[0111] Each heat exchange channel 120b has a corresponding temperature detection element at its outlet end, which is used to monitor the temperature of the cooling medium at the outlet end of the heat exchange channel 120b.

[0112] The controller is connected to the temperature sensor and valve assembly 112. The controller is configured to control the valve assembly 112 to operate according to the temperature detected by the temperature sensor, and adjust the opening of the corresponding flow channel 1112a.

[0113] As the cooling medium flows through each heat exchange channel 120b, a temperature sensor located at the outlet of each heat exchange channel 120b monitors the temperature of the cooling medium at that location in real time and transmits the detected temperature signal to the controller. The controller then controls the valve assembly 112 to operate based on the temperature detected by the temperature sensor.

[0114] Specifically, in the initial state, all valve assemblies 112 are at the same opening position. The cooling medium that has completed heat exchange flows out from the outlet end of the heat exchange channel 120b, and the temperature sensor detects the temperature of the cooling medium at this time and transmits the temperature signal to the controller. The controller compares the received temperature signal with the preset temperature value.

[0115] When the temperature of the cooling medium at the outlet of heat exchange channel 120b is higher than the preset temperature value, it indicates that the heat exchange capacity of heat exchange channel 120b is too small, that is, the flow rate of the cooling medium flowing through heat exchange channel 120b is too low.

[0116] At this time, the controller sends a control command to the valve group 112 corresponding to the heat exchange channel 120b, causing the valve group 112 to actuate and increase the opening of the corresponding branch channel 1112a. After the opening of the branch channel 1112a increases, the flow rate of the cooling medium flowing through the branch channel 1112a and the heat exchange channel 120b connected to the branch channel 1112a increases, thereby increasing the heat exchange capacity of the heat exchange channel 120b, causing the outlet cooling medium temperature to decrease and approach the preset temperature value.

[0117] When the temperature of the cooling medium at the outlet of heat exchange channel 120b is lower than the preset temperature value, it indicates that the heat exchange capacity of heat exchange channel 120b is too large, that is, the flow rate of the cooling medium flowing through heat exchange channel 120b is too high.

[0118] At this time, the controller sends a control command to the valve group 112 corresponding to the heat exchange channel 120b, causing the valve group 112 to actuate and reduce the opening of the corresponding branch channel 1112a. After the opening of the branch channel 1112a is reduced, the flow rate of the cooling medium flowing through the branch channel 1112a and the heat exchange channel 120b connected to the branch channel 1112a is reduced, thereby reducing the heat exchange capacity of the heat exchange channel 120b, causing the temperature of the cooling medium at the outlet end to rise, approaching the preset temperature value.

[0119] By installing temperature sensors at the outlet of each heat exchange channel 120b, and by installing valve groups 112 corresponding to each branch channel 1112a at the branch end 1112 of the distributor 110b, along with the controller settings, independent adjustment of the cooling medium flow rate in each heat exchange channel 120b is achieved. When the heat exchange capacity of each heat exchange channel 120b is different, the controller can automatically adjust the opening of the corresponding valve group 112 according to the temperature at the outlet, thereby dynamically adjusting the flow rate of the cooling medium in the branch channel 1112a. This design reduces flow deviation and heat exchange differences between the various heat exchange channels 120b, avoiding the phenomenon of some heat exchange channels 120a being overheated or undercooled due to uneven distribution of cooling medium flow in the outdoor heat exchanger 100a in related technologies. This allows the cooling medium to achieve sufficient heat exchange within the heat exchange channels 120b, and the cooling medium temperature at the outlet of each heat exchange channel 120b tends to be uniform, thereby reducing the heat exchange efficiency loss caused by uneven local liquid supply in the heat exchange channels 120b and improving the overall heat exchange efficiency of the outdoor heat exchanger 100b.

[0120] Furthermore, by reducing the flow deviation and heat exchange difference between each heat exchange channel 120b, the cooling medium temperature at the outlet of each heat exchange channel 120b tends to be consistent, which can avoid problems such as component aging and increased operating noise caused by uneven temperature, thereby improving the service life and user experience of the air conditioner.

[0121] Therefore, the outdoor heat exchanger 100b provided in this embodiment can independently and dynamically adjust the flow rate of the cooling medium in each branch channel 1112a, reducing the flow deviation and heat exchange difference between the various heat exchange channels 120b. This ensures that the cooling medium receives sufficient heat exchange within the heat exchange channels 120b, and the temperature of the cooling medium at the outlet of each heat exchange channel 120b tends to be uniform, reducing heat exchange efficiency loss caused by uneven distribution of the cooling medium in certain areas, thereby improving the overall heat exchange efficiency of the outdoor heat exchanger 100b. Simultaneously, this design can also avoid problems such as component aging and increased operating noise caused by uneven temperature, thereby improving the service life and user experience of the air conditioner.

[0122] See Figure 3 and Figure 5 In some embodiments, the valve assembly 112 includes a plug 1121, which is extended and retracted relative to the corresponding diversion channel 1112a along the radial Y direction of the diversion channel 1112a to adjust the opening degree of the corresponding diversion channel 1112a.

[0123] Valve assembly 112 also includes a drive member 1122, which has an electromagnetic drive part 1122a. The electromagnetic drive part 1122a has a cavity, and a partial sealing member 1121 is disposed in the cavity.

[0124] The electromagnetic drive unit 1122a is connected to the controller and is configured to control the extension and retraction of the sealing member 1121 relative to the corresponding diversion channel 1112a when energized.

[0125] Specifically, when the outdoor heat exchanger 100b starts operating, the controller determines whether it is necessary to adjust the opening of the branch channel 1112a based on the detection signals from the temperature sensors at the outlets of each heat exchange channel 120b. When adjustment is required, the controller sends a current signal to the electromagnetic drive unit 1122a corresponding to that branch channel 1112a.

[0126] After receiving a current signal, the electromagnetic drive unit 1122a generates an electromagnetic field. The electromagnetic field acts on the sealing member 1121, causing the sealing member 1121 to be subjected to an electromagnetic force in the radial Y direction along the diversion channel 1112a.

[0127] Along the radial direction Y of the distributor, the electromagnetic force pushes the sealing element 1121 inward, reducing the flow space occupied by the sealing element 1121 and increasing the effective flow cross-sectional area of ​​the distributor channel 1112a, thus increasing the opening. When it is necessary to reduce the opening, the current direction changes, the electromagnetic force direction changes, and the sealing element 1121 moves towards the outer wall of the distributor, increasing the flow space occupied by the sealing element 1121 and decreasing the effective flow cross-sectional area of ​​the distributor channel 1112a.

[0128] The moving distance of the blocking component 1121 changes with the magnitude of the current. The moving direction of the blocking component 1121 changes with the direction of the current.

[0129] By controlling the sealing component 1121 through the electromagnetic drive unit 1122a, the opening degree of the flow divider 1112a is precisely adjusted, thereby improving the precise adjustment of the cooling medium flow rate and response speed in the flow divider 1112a.

[0130] The driving component 1122 can also be other structures, such as an electrically controlled telescopic rod, which controls the extension and retraction of the sealing component 1121 by extending and retracting the telescopic rod.

[0131] In addition, the valve assembly 112 also includes an elastic reset member 1123, which is disposed in the cavity and connected to the sealing member 1121.

[0132] The elastic reset member 1123 is configured to drive the blocking member 1121 to move toward the corresponding diversion channel 1112a.

[0133] For example, the elastic reset member 1123 may be in the form of a compression spring, a tension spring, or a torsion spring.

[0134] Taking a compression spring as an example, one end of the spring is fixed to the inner wall of the cavity, and the other end of the spring is in contact with or connected to the sealing member 1121. The spring can be in a compressed state, thereby applying a thrust to the sealing member 1121 in the direction of the diversion channel 1112a.

[0135] When the electromagnetic drive part 1122a of the drive member 1122 is in a de-energized state, the elastic force applied by the elastic reset member 1123 pushes the sealing member 1121 toward the interior of the diversion channel 1112a, so that the sealing member 1121 extends into the diversion channel 1112a, reducing the opening of the fully enclosed diversion channel 1112a.

[0136] When the electromagnetic drive part 1122a of the drive member 1122 is energized, the electromagnetic force overcomes the elastic force of the elastic reset member 1123 and pushes the sealing member 1121 out of the diversion channel 1112a, thereby increasing the opening of the diversion channel 1112a.

[0137] With the provision of the elastic reset member 1123, the electromagnetic drive unit 1122a does not need to change the current direction. It can drive the sealing member 1121 to reset by relying solely on the elastic reset member 1123, thereby reducing the power consumption of the electromagnetic drive unit 1122a and improving energy efficiency.

[0138] In some embodiments, the outdoor heat exchanger 100b further includes a pressure sensing element disposed within the main flow channel 1111a to monitor the pressure of the cooling medium within the main flow channel 1111a.

[0139] The controller is connected to the pressure sensor and is configured to control the valve assembly 112 to adjust the opening of the corresponding flow channel 1112a based on the detection results of the temperature sensor and the pressure sensor.

[0140] Specifically, the controller performs a comprehensive analysis of the temperature at the outlet of each heat exchange channel 120b collected by the temperature sensor and the pressure in the main channel 1111a collected by the pressure sensor.

[0141] When the pressure in the main flow channel 1111a changes, the condensation temperature of the cooling medium also changes. At this time, the preset temperature value at the outlet of each heat exchange channel 120b needs to be adjusted accordingly.

[0142] The condensation temperature refers to the saturation temperature of the gaseous cooling medium when it is cooled and condenses into a liquid phase.

[0143] The controller corrects the preset temperature value based on the pressure signal fed back by the pressure sensor, and then compares the temperature detected by the temperature sensor at the outlet of each heat exchange channel 120b with the corrected preset temperature value. Based on the deviation between the detected temperature and the preset temperature value, the controller controls the opening degree of the corresponding valve group 112.

[0144] By introducing a pressure sensing element, the controller can dynamically adjust the opening of the valve group 112 according to the actual operating status of the outdoor heat exchanger 100b, thereby dynamically adjusting the flow rate of the cooling medium in the diversion channel 1112a, making the flow rate regulation more in line with the current operating conditions, and further improving the adaptability and regulation accuracy of the outdoor heat exchanger 100b under different operating conditions.

[0145] See Figure 3 In some embodiments, the inlet end 1111 and the branch end 1112 are located at both ends of the distributor body 111 in the axial direction X, each branch channel 1112a extends in the axial direction X of the distributor body 111, and the output end of each branch channel 1112a is located on the end face of the branch end 1112.

[0146] Along the circumference of the distributor body 111, multiple diversion channels 1112a are distributed at intervals on the diversion end 1112.

[0147] For example, in the axial direction X, the inlet end 1111 is located at the bottom end of the distributor body 111, and the branch end 1112 is located at the top end of the distributor body 111.

[0148] When the outdoor heat exchanger 100b starts, the cooling medium first enters the distributor body 111 through the inlet end 1111 and travels along the axial direction X in the main channel 1111a. Then, at the branch end 1112, it is distributed into multiple branch channels 1112a extending along the axial direction X. Since the output ends of each branch channel 1112a are located on the end face of the branch end 1112, the lengths of each branch channel 1112a are basically the same, thus avoiding uneven distribution of the cooling medium along the axial direction X of the distributor body 111 and further improving the uniformity of cooling medium distribution by the distributor 110b.

[0149] Meanwhile, multiple branch channels 1112a are distributed circumferentially along the distributor body 111, so that the output ends of each branch channel 1112a are spatially dispersed, thereby reducing local flow interference at the output end and making each branch channel 1112a more uniformly distributed before entering the heat exchange channel 120b.

[0150] The cooling medium completes heat exchange in each heat exchange channel 120b and flows into the liquid collection channel 130.

[0151] By configuring the distribution channels 1112a, the cooling medium in the main channel 1111a is distributed to the distribution channels 1112a at different positions in the circumferential direction after flowing through the distributor body 111 in the axial direction X. This realizes the distribution of the cooling medium from a single main channel 1111a to multiple circumferentially distributed distribution channels 1112a, reduces the flow deviation caused by channel concentration, improves the uniformity of cooling medium distribution in each distribution channel 1112a, and makes the heat load distribution among the heat exchange channels 120b more balanced. This helps to reduce the heat exchange difference between branches and reduce the energy consumption fluctuation, pressure fluctuation and operational instability of the outdoor heat exchanger 100b under complex operating conditions caused by uneven distribution of cooling medium. This improves the overall heat exchange consistency and operational reliability of the outdoor heat exchanger 100b.

[0152] Furthermore, the output end of the branch flow channel 1112a is located on the end face of the branch end 1112, which facilitates docking and installation with the subsequent heat exchange flow channel 120b. In addition, the circumferentially spaced distribution avoids mutual interference between the branch flow channels 1112a.

[0153] See Figure 4 In some embodiments, the diameter of each branch channel 1112a is the same.

[0154] By setting the diameter of each branch channel 1112a to be the same, when the valve assembly 112 is at the same opening degree, the flow resistance of each branch channel 1112a to the cooling medium is the same, thus making the flow capacity of the branch channels 1112a basically consistent. This allows the cooling medium to be evenly distributed to each branch channel 1112a in the initial state. This design reduces the flow deviation caused by the structural differences of the branch channels 1112a themselves, allowing each heat exchange channel 120b to obtain a similar cooling medium flow rate when the valve assembly 112 is at the same opening degree. This reduces the burden on the controller to perform flow compensation and adjustment, and improves the distribution uniformity of the entire distributor 110b and the overall performance consistency of the heat exchanger.

[0155] Meanwhile, the fact that each branch channel 1112a has the same diameter simplifies the manufacturing process of the distributor body 111 and makes it easier to mass-produce using standardized processing methods.

[0156] See Figure 6 This disclosure provides a method for distributing a cooling medium, applied to an outdoor heat exchanger 100b as described in any of the embodiments above. The outdoor heat exchanger 100b includes a distributor 110b and multiple heat exchange channels 120b. The distributor 110b has multiple branch channels 1112a within its branching end 1112. The outlet end of each heat exchange channel 120b is connected to the output end of a branch channel 1112a. The outdoor heat exchanger 100b is provided with a valve assembly 112 at the position corresponding to each branch channel 1112a.

[0157] The allocation method includes the following steps:

[0158] Step S100: Collect the temperature Ti of the cooling medium at the outlet end of multiple heat exchange channels 120b, and obtain the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel 120b.

[0159] Specifically, when the outdoor heat exchanger 100b is running, the cooling medium enters the main flow channel 1111a from the inlet end 1111 of the distributor body 111, is distributed to each branch flow channel 1112a via the branch end 1112, and then enters the corresponding heat exchange flow channel 120b to exchange heat with the outside. At the outlet end of each heat exchange flow channel 120b, a temperature sensing element detects the temperature Ti of the cooling medium at the outlet end. Simultaneously, the condensation temperature T0 of the cooling medium under the current operating conditions is obtained.

[0160] By collecting the temperature Ti of the cooling medium in real time at the outlet end of the heat exchange channel 120b in step S100 and obtaining the setting of the condensation temperature T0, a data basis can be provided for subsequent flow regulation, thereby enabling precise adjustment of the opening of the split channel 1112a.

[0161] Step S200: Set the temperature reference value ΔT between the cooling medium temperature and the condensation temperature T0 at the outlet end of the heat exchange channel 120b.

[0162] By setting the preset temperature reference value ΔT in step S200, a quantitative reference is provided for calculating the actual deviation ΔTi between temperature Ti and condensing temperature T0. This provides a benchmark for subsequent judgment on whether there is a deviation between temperature Ti and condensing temperature T0, as well as the degree of deviation of the actual deviation ΔTi, which facilitates controlling the increase or decrease of the opening of the split flow channel 1112a.

[0163] Step S300: Determine the relative magnitudes of temperature Ti and condensation temperature T0.

[0164] Step S310: If the temperature Ti is less than the condensing temperature T0, calculate the absolute value of the difference between the actual deviation ΔTi and the condensing temperature T0 and the temperature reference value ΔT. When the absolute value is greater than the preset value Ta, control the valve group 112 corresponding to the heat exchange channel 120b according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT, so as to increase or decrease the opening of the branch channel 1112a until the absolute value is less than or equal to the preset value Ta.

[0165] Specifically, when the temperature Ti at the outlet of the heat exchange channel 120b is less than the condensation temperature T0, it indicates that the cooling medium has been cooled to below the condensation temperature T0 within the heat exchange channel 120b, i.e., supercooling has occurred.

[0166] Subcooling refers to the process where the cooling medium, after condensing from a gaseous phase to a liquid phase, continues to cool down to below the condensation temperature T0. Subcooling ensures that the cooling medium is entirely in the liquid phase when it enters subsequent components of the refrigeration system, preventing instability in the operation of these components due to the presence of gaseous cooling medium components.

[0167] At this point, the controller calculates the absolute value of the difference between the actual deviation ΔTi and the temperature reference value ΔT, and compares this absolute value with the preset value Ta.

[0168] If the absolute value is greater than the preset value Ta, it indicates that the actual deviation ΔTi deviates too much from the temperature reference value ΔT. Excessive deviation will lead to increased energy consumption and a decreased energy efficiency ratio of the outdoor heat exchanger 100b. Therefore, it is necessary to control the valve group 112 corresponding to the heat exchange channel 120b via the controller to increase or decrease the opening of the branch channel 1112a until the absolute value is less than or equal to the preset value Ta.

[0169] Therefore, by setting the relative values ​​of temperature Ti and condensation temperature T0 in step S300, and setting the controller to enter the subcooling regulation logic only when temperature Ti is less than condensation temperature T0 in step S310, the controller can avoid performing deviation calculations in the non-subcooled state, thereby simplifying the control process and improving the control response speed.

[0170] Furthermore, by setting the comparison between the absolute value of the difference between the actual deviation ΔTi and the temperature reference value ΔT in step S310 and the preset value Ta, the controller only controls the valve group 112 to operate when the actual deviation ΔTi is too large, so as to increase or decrease the opening of the diversion channel 1112a. This avoids frequent operation of the valve group 112 due to small deviation fluctuations, thereby extending the service life of the valve group 112, reducing the fluctuation of the cooling medium flow rate, and improving the operational stability of the outdoor heat exchanger 100b.

[0171] Step S320: If the temperature Ti is greater than or equal to the condensing temperature T0, control the valve group 112 corresponding to the heat exchange channel 120b to reduce the opening of the branch channel 1112a until the temperature Ti is less than the condensing temperature T0.

[0172] Specifically, when the temperature Ti at the outlet of the heat exchange channel 120b is greater than or equal to the condensation temperature T0, it indicates that the cooling medium has not yet cooled down to the condensation temperature or has just cooled down in the heat exchange channel 120b. At this time, the cooling medium may not have undergone sufficient heat exchange in the heat exchange channel 120b, and there may be gaseous cooling medium in the cooling medium, which may easily reduce the stability of the operation of subsequent components.

[0173] At this time, the controller controls the valve group 112 corresponding to the heat exchange channel 120b to reduce the opening of the branch channel 1112a, thereby reducing the flow rate of the cooling medium flowing into the heat exchange channel 120b. After the flow rate is reduced, the flow velocity of the cooling medium in the heat exchange channel 120b decreases, the residence time is prolonged, and the heat exchange with the outside is more complete, so that the outlet temperature Ti gradually decreases until Ti is less than the condensation temperature T0.

[0174] By setting the relative values ​​of temperature Ti and condensing temperature T0 in step S300, and setting the controller to reduce the opening of the branch channel 1112a when the temperature Ti at the outlet of heat exchange channel 120b is greater than or equal to the condensing temperature T0 in step S320, the control response speed can be improved, allowing the uncooled heat exchange channel 120b to quickly obtain flow regulation, thereby enabling the cooling medium to perform sufficient heat exchange and improving the heat exchange efficiency of the entire outdoor heat exchanger 100b.

[0175] In summary, the distribution method provided in this embodiment, through the setting of step S100, collects the temperature Ti of the cooling medium in real time at the outlet end of the heat exchange channel 120b and obtains the condensation temperature T0, providing a data basis for subsequent flow rate adjustment, thereby achieving precise adjustment of the opening of the branch channel 1112a. Through the setting of step S200, a quantitative benchmark is provided for calculating the actual deviation ΔTi between temperature Ti and condensation temperature T0, thus providing a comparative benchmark for subsequently judging whether there is a deviation between temperature Ti and condensation temperature T0, and the degree of deviation of the actual deviation ΔTi, facilitating the control of increasing or decreasing the opening of the branch channel 1112a.

[0176] During the use of outdoor heat exchanger 100b, when Ti is less than the condensing temperature T0, it indicates that the cooling medium has cooled down to below the condensing temperature T0 in the heat exchange channel 120b, i.e., supercooling has occurred.

[0177] When Ti is less than the condensing temperature T0 and its absolute value is greater than the preset value Ta, it means that the actual deviation ΔTi deviates too much from the temperature reference value ΔT. Excessive deviation will lead to increased energy consumption and a decreased energy efficiency ratio of the outdoor heat exchanger 100b. Therefore, it is necessary to control the valve group 112 corresponding to the heat exchange channel 120b through the controller to increase or decrease the opening of the branch channel 1112a until its absolute value is less than or equal to the preset value Ta.

[0178] When the temperature Ti is greater than or equal to the condensation temperature T0, it means that the cooling medium in the heat exchange channel 120b has not yet cooled to the condensation temperature or has just cooled down. At this time, the cooling medium may not have undergone sufficient heat exchange in the heat exchange channel 120b, and there may be gaseous cooling medium in the cooling medium, which can easily reduce the stability of the operation of subsequent components. At this time, the controller controls the valve group 112 corresponding to the heat exchange channel 120b to reduce the opening of the branch channel 1112a, thereby reducing the flow rate of the cooling medium flowing into the heat exchange channel 120b. After the flow rate is reduced, the flow velocity of the cooling medium in the heat exchange channel 120b decreases, the residence time is prolonged, and the heat exchange with the outside is more sufficient, so that the outlet temperature Ti gradually decreases until Ti is less than the condensation temperature T0.

[0179] This disclosure provides a cooling medium distribution method that collects the temperature Ti at the outlet of each heat exchange channel 120b and compares it with the condensation temperature T0 to determine whether the heat exchange channel 120b is undercooled. Different control strategies are then employed to achieve independent dynamic adjustment of the opening degree of each branch channel 1112a. This distribution method ensures both control accuracy and response speed. Simultaneously, it makes the temperature of the cooling medium at the outlet of each heat exchange channel 120b more uniform, reducing flow deviations and heat exchange differences between the various heat exchange channels 120b, minimizing heat exchange efficiency losses caused by uneven local liquid supply, thereby improving the overall heat exchange efficiency of the outdoor heat exchanger 100b.

[0180] It should be noted that the execution order of steps S310 and S320 is determined based on the result of step S300. When the temperature Ti is less than the condensing temperature T0 and the absolute value of the difference between the actual deviation ΔTi from the condensing temperature T0 and the temperature reference value ΔT is greater than the preset value Ta, step S310 is executed. When the temperature Ti is greater than or equal to the condensing temperature T0, step S320 is executed.

[0181] See Figure 7 In some embodiments, in step S310, when the absolute value is greater than a preset value Ta, the valve group 112 corresponding to the heat exchange channel 120b is controlled according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT to increase or decrease the opening of the branch channel 1112a, specifically including:

[0182] Step S311: Determine the magnitude of the actual deviation ΔTi and the temperature reference value ΔT.

[0183] Step S312: If the actual deviation ΔTi is greater than the temperature reference value ΔT, then control the valve group 112 corresponding to the heat exchange channel 120b to increase the opening of the branch channel 1112a.

[0184] Step S313: If the actual deviation ΔTi is less than the temperature reference value ΔT, then control the valve group 112 corresponding to the heat exchange channel 120b to reduce the opening of the branch channel 1112a until the absolute value is less than or equal to the preset value Ta.

[0185] Specifically, step S300 determines that the temperature Ti is less than the condensing temperature T0, and step S300 also determines that the absolute value of the difference between the actual deviation ΔTi of the temperature Ti and the condensing temperature T0 and the temperature reference value ΔT is greater than the preset value Ta. This indicates that the outlet end of the heat exchange channel 120b is in a subcooled state at this time, and the actual deviation ΔTi deviates too much from the temperature reference value ΔT.

[0186] By setting step S311, the controller further determines the relationship between the actual deviation ΔTi and the temperature reference value ΔT.

[0187] If the actual deviation ΔTi is greater than the temperature reference value ΔT, it means that the temperature Ti is too low, and the cooling medium is overcooled in the heat exchange channel 120b. At this time, through the setting in step S312, the controller controls the corresponding valve group 112 to increase the opening of the branch channel 1112a, thereby increasing the flow rate of the cooling medium flowing into the heat exchange channel 120b. After the flow rate increases, the flow velocity of the cooling medium in the heat exchange channel 120b increases and the residence time decreases, thereby preventing the cooling medium from being overcooled in the heat exchange channel 120b, and causing the outlet temperature Ti to gradually rise until the absolute value is less than or equal to the preset value Ta.

[0188] If the actual deviation ΔTi is less than the temperature reference value ΔT, it means that the temperature Ti is high, and the cooling medium is not cooling sufficiently in the heat exchange channel 120b. In this case, through the settings in step S313, the controller controls the corresponding valve group 112 to reduce the opening of the branch channel 1112a, thereby reducing the flow rate of the cooling medium flowing into the heat exchange channel 120b. After the flow rate decreases, the flow velocity of the cooling medium in the heat exchange channel 120b decreases, the residence time increases, and the heat exchange with the outside is more complete, thus causing the outlet temperature Ti to gradually decrease until its absolute value is less than or equal to the preset value Ta.

[0189] When the absolute value is less than or equal to the preset value Ta, the actual deviation ΔTi has entered the reasonable deviation range. At this time, the controller no longer needs to control the valve group 112 to adjust the opening of the diversion channel 1112a.

[0190] By setting steps S311 and S312, the controller can control valve group 112 to operate when the actual deviation ΔTi is greater than the temperature reference value ΔT, i.e. the temperature Ti is too low, so as to increase the opening of the diversion channel 1112a, thereby increasing the flow rate of the cooling medium in the heat exchange channel 120b, avoiding the cooling medium from being over-cooled in the heat exchange channel 120b, and thus causing the outlet temperature Ti to gradually rise until the absolute value is less than or equal to the preset value Ta.

[0191] By setting steps S311 and S313, the controller can control valve group 112 to operate when the actual deviation ΔTi is less than the temperature reference value ΔT, i.e. the temperature Ti is too high, so as to reduce the opening of the diversion channel 1112a, thereby reducing the flow rate of the cooling medium in the heat exchange channel 120b, so that the cooling medium can achieve sufficient heat exchange in the heat exchange channel 120b, and thus the temperature Ti at the outlet end gradually decreases until the absolute value is less than or equal to the preset value Ta.

[0192] This distribution method can make the temperature of the cooling medium at the outlet of each heat exchange channel 120b more uniform, reduce the flow deviation and heat exchange difference between each heat exchange channel 120b, reduce the heat exchange efficiency loss caused by uneven local liquid supply, and thus improve the heat exchange efficiency of the entire outdoor heat exchanger 100b.

[0193] Furthermore, the distribution method provided in this disclosure embodiment can be implemented using only a temperature detection device, without the need for complex equipment, and has the characteristic of low cost.

[0194] In some embodiments, the preset value Ta is any fixed value that is greater than 0°C and less than or equal to 2°C.

[0195] Specifically, if the preset value Ta is too large, the control accuracy cannot be guaranteed. That is, when the actual deviation ΔTi between temperature Ti and condensing temperature T0 and the temperature reference value ΔT is too large, the absolute value may still be less than or equal to the preset value Ta, causing the controller to not respond. This may result in the presence of gaseous cooling medium in the cooling medium output from the heat exchange channel 120b, affecting the operational stability of the outdoor heat exchanger 100b.

[0196] The smaller the preset value Ta, the higher the control precision, but the operating frequency of valve group 112 also increases accordingly. Even a small temperature fluctuation may cause the absolute value to exceed the preset value Ta, triggering valve group 112 to operate. Frequent operation of valve group 112 will accelerate the wear of valve group 112, affect the operation of valve group 112 handle, and cause periodic fluctuations in the flow rate of cooling medium, affecting the stability of outdoor heat exchanger 100b operation.

[0197] By setting the preset value Ta to any value greater than 0℃ and less than or equal to 2℃, the deviation between the actual deviation ΔTi of temperature Ti and condensation temperature T0 and the temperature reference value ΔT is limited to a range not exceeding 2℃. This range ensures that the cooling medium output from the heat exchange channel 120b is a stable liquid cooling medium, and also ensures the service life of the valve assembly 112 while ensuring the control accuracy of the controller.

[0198] For example, the preset value Ta can be 1℃, 2℃, etc.

[0199] In some embodiments, the temperature reference value ΔT is any fixed value between 3°C and 8°C.

[0200] When the temperature reference value ΔT is less than 3℃, the cooling medium is prone to vaporization due to pressure changes in the heat exchange channel 120b during subsequent flow, resulting in the liquid cooling medium output from the heat exchange channel 120b being mixed with the gaseous cooling medium, thereby reducing the operational stability of the outdoor heat exchanger 100b.

[0201] When the temperature reference value ΔT is greater than 8℃, the temperature Ti of the cooling medium at the outlet end of the heat exchange channel 120b needs to be lower, which increases the energy consumption of the outdoor heat exchanger 100b and thus reduces the energy efficiency ratio of the outdoor heat exchanger 100b.

[0202] By setting the temperature reference value ΔT to any value between 3°C and 8°C, it is possible to ensure that the cooling medium can fully exchange heat in the heat exchange channel 120b, prevent the cooling medium from vaporizing in the heat exchange channel 120b, and avoid the energy consumption reduction caused by the cooling medium being too low in temperature. This allows the outdoor heat exchanger 100b to maintain efficient operation under various working conditions.

[0203] For example, the temperature reference value ΔT can be 3℃, 4℃, 5℃, 6℃, etc.

[0204] See Figure 8 In some embodiments, the preset temperature reference value ΔT between the cooling medium temperature and the condensation temperature T0 at the outlet end of the heat exchange channel 120b in step S200 specifically includes:

[0205] Step S210: Define at least two temperature ranges for the environment where the outdoor heat exchanger 100b is located. The temperature ranges do not overlap with each other. Each temperature range corresponds to a temperature reference value ΔT, and the higher temperature range corresponds to a larger temperature reference value ΔT.

[0206] Step S220: Collect the ambient temperature Th at the location of the outdoor heat exchanger 100b.

[0207] Step S230: Determine which temperature range the ambient temperature Th belongs to, and determine the temperature reference value ΔT between temperature Ti and condensation temperature T0 based on the temperature range to which it belongs.

[0208] When the ambient temperature Th is high, the condensation temperature T0 is relatively high, the temperature difference between the cooling medium and the outside environment decreases, and the heat exchange capacity declines. At this time, setting a larger temperature reference value ΔT can ensure that the cooling medium can still carry out sufficient heat exchange in a higher temperature environment, and avoid the vaporization of the cooling medium due to the decrease in heat exchange capacity.

[0209] When the ambient temperature Th is low, the condensation temperature T0 is relatively low. Setting a smaller temperature reference value ΔT can avoid increased energy consumption due to overcooling.

[0210] By setting steps S210, S230 and S240, the outdoor heat exchanger 100b can maintain stable operation under different temperature conditions, thereby improving the energy efficiency and adaptability of the outdoor heat exchanger 100b to environmental changes.

[0211] For example, the first temperature range corresponds to the range where Th is below 27°C, and the corresponding temperature reference value ΔT is set to 3°C. The second temperature range corresponds to the range where Th is between 27°C and 35°C, and the corresponding temperature reference value ΔT is set to 4°C. The third temperature range corresponds to the range where Th is above 43°C, and the corresponding temperature reference value ΔT is set to 6°C.

[0212] In some embodiments, the distributor 110b has a main flow channel 1111a in its inlet end 1111, and the outdoor heat exchanger 100b also includes a pressure sensing element for monitoring the pressure P of the cooling medium in the main flow channel 1111a.

[0213] Step S100 involves obtaining the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel 120b, specifically including:

[0214] Data collection pressure P.

[0215] The condensation temperature T0 is determined based on the pressure P.

[0216] By detecting the pressure P within the main flow channel 1111a and determining the setting of the condensing temperature T0 based on the pressure P, the distribution equipment does not require a temperature sensor to be installed at the outlet of the heat exchange channel 120b to measure the condensing temperature. Instead, the condensing temperature is obtained indirectly through pressure detection. The response speed of the pressure sensor is generally faster than that of the temperature sensor, enabling it to reflect changes in the condensing temperature more quickly when operating conditions change, thus improving the controller's response speed.

[0217] In addition, the pressure sensing element is installed in the main flow channel 1111a, which is far away from the temperature fluctuation area at the outlet of the heat exchange channel 120b. The measured pressure signal is more stable, which helps to improve the stability and anti-interference ability of the controller.

[0218] In some embodiments, the allocation method includes the following steps before real-time acquisition of pressure P:

[0219] Establish a mapping relationship between the pressure of the cooling medium in the main channel 1111a and each condensation temperature T0. In the mapping relationship, the cooling medium has multiple different pressures, and each pressure corresponds to a condensation temperature T0.

[0220] For example, Table 1 shows the mapping relationship between the pressure P of the cooling medium in the main channel 1111a and the condensation temperature T0.

[0221] Table 1. Mapping relationship between pressure P and condensation temperature T0 of the cooling medium in the main channel.

[0222]

[0223] After the pressure sensor collects the actual pressure P in the main channel 1111a, the controller finds the condensation temperature T0 corresponding to the pressure value that is equal to or closest to the actual pressure P by querying the mapping relationship.

[0224] By pre-determining the mapping relationship between pressure and condensation temperature, the controller does not need to perform complex thermodynamic calculations in real time during operation. It can quickly obtain the condensation temperature T0 simply by using the mapping relationship between pressure and condensation temperature, which improves the operational efficiency of the control system and reduces the requirements for the controller's computing power.

[0225] In some embodiments, the allocation method includes the following steps:

[0226] After adjusting the opening of the diversion channel 1112a, repeat steps S100 to S300.

[0227] Specifically, the controller re-collects the temperature Ti of the cooling medium at the outlet end of each heat exchange channel 120b, re-obtains the condensation temperature T0, re-determines the relationship between the temperature Ti and the condensation temperature T0, and recalculates the difference between the actual deviation ΔTi and the temperature reference value ΔT based on the determination result, thereby deciding whether it is necessary to readjust the opening of the corresponding valve group 112.

[0228] By adjusting the opening of the branch flow channel 1112a and repeating steps S100 to S300, the controller continuously monitors the temperature status at the outlet of each heat exchange channel 120b and dynamically tracks and adjusts the opening of each valve group 112. This closed-loop control method ensures that the outdoor heat exchanger 100b can continuously adapt to changes in operating conditions during operation and maintain the long-term stability of the cooling medium status at the outlet of each heat exchange channel 120b.

[0229] Furthermore, this disclosure also provides a cooling medium distribution device applied to an outdoor heat exchanger 100b as described in any of the embodiments above. The outdoor heat exchanger 100b includes a distributor 110b and multiple heat exchange channels 120b. The distributor 110b has multiple branch channels 1112a within its branching end 1112. The outlet end of each heat exchange channel 120b is connected to the output end of a branch channel 1112a. The outdoor heat exchanger 100b is provided with a valve assembly 112 at the position corresponding to each branch channel 1112a.

[0230] The distribution device includes a first acquisition module, an acquisition module, a data module, a first judgment module, a calculation module, and a controller.

[0231] The first acquisition module is used to acquire the temperature Ti of the cooling medium at the outlet end of multiple heat exchange channels 120b.

[0232] The acquisition module is used to acquire the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel 120b.

[0233] The data module has a preset temperature reference value ΔT for the cooling medium temperature and condensation temperature T0 at the outlet of the heat exchange channel 120b. The first judgment module is used to determine the magnitude of temperature Ti and condensation temperature T0.

[0234] The calculation module is used to calculate the absolute value of the difference between the actual deviation ΔTi between temperature Ti and condensation temperature T0 and the temperature reference value ΔT when temperature Ti is less than condensation temperature T0.

[0235] The controller is used to control the valve group 112 corresponding to the heat exchange channel 120b according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT when the absolute value is greater than the preset value Ta, so as to increase or decrease the opening of the diversion channel 1112a until the absolute value is less than or equal to the preset value Ta.

[0236] Alternatively, the controller is used to control the valve group 112 corresponding to the heat exchange channel 120b when the temperature Ti is greater than or equal to the condensing temperature T0, so as to reduce the opening of the branch channel 1112a until the temperature Ti is less than the condensing temperature T0.

[0237] Before the outdoor heat exchanger 100b is put into operation, the data module stores a temperature reference value ΔT and a preset value Ta. The temperature reference value ΔT represents the desired subcooling target value, and the preset value Ta represents the allowable deviation range between the actual subcooling and the target subcooling.

[0238] Specifically, when the outdoor heat exchanger 100b is in operation, the cooling medium enters the main flow channel 1111a from the inlet end 1111 of the distributor body 111, is distributed to each branch flow channel 1112a via the branch end 1112, and then enters the corresponding heat exchange channel 120b to exchange heat with the outside.

[0239] At this point, the first acquisition module starts working, acquiring the temperature Ti of the cooling medium at the outlet end of each heat exchange channel 120b. Simultaneously, the acquisition module acquires the condensation temperature T0 of the cooling medium under the current operating conditions.

[0240] The temperature Ti and condensation temperature T0 at the outlet end of each heat exchange channel 120b are collected in real time by the first acquisition module and the acquisition module, providing an accurate data basis for subsequent judgment and calculation.

[0241] The first judgment module compares the temperature Ti at the outlet of each heat exchange channel 120b with the condensation temperature T0 to determine the relationship between Ti and T0.

[0242] If the temperature Ti of a heat exchange channel 120b is greater than or equal to the condensation temperature T0, it indicates that the cooling medium has not yet cooled to the condensation temperature within that heat exchange channel 120b, meaning no subcooling has occurred, and the cooling medium contains gaseous cooling medium. In this case, the first judgment module transmits the judgment result to the controller. Upon receiving the judgment result, the controller sends a control command to the valve group 112 corresponding to the heat exchange channel 120b, causing the valve group 112 to reduce the opening of the corresponding branch channel 1112a.

[0243] After the opening of the branch channel 1112a is reduced, the flow rate of the cooling medium flowing through the branch channel 1112a and the heat exchange channel 120b connected to the branch channel 1112a is reduced. The flow velocity of the cooling medium in the heat exchange channel 120b is reduced, the residence time is prolonged, and the heat exchange with the outside is more sufficient, thereby causing the outlet temperature Ti to gradually decrease.

[0244] The controller continuously monitors the judgment result of the first judgment module until the outlet temperature Ti is less than the condensation temperature T0.

[0245] If the temperature Ti of any heat exchange channel 120b is lower than the condensation temperature T0, it indicates that the cooling medium has cooled below the condensation temperature within that heat exchange channel 120b, resulting in supercooling. At this point, the calculation module begins operation. The calculation module first calculates the actual deviation ΔTi. Then, it calculates the absolute value of the difference between the actual deviation ΔTi and the temperature reference value ΔT, and compares this absolute value with the preset value Ta.

[0246] By setting the calculation module, the absolute value of the difference between the actual deviation ΔTi and the temperature reference value ΔT can be calculated, thus quantifying the degree of deviation between the actual deviation ΔTi and the temperature reference value ΔT.

[0247] By comparing the absolute value with the preset value Ta, the distribution equipment is only adjusted when the deviation exceeds a reasonable range, which avoids frequent operation of valve group 112 caused by small fluctuations, extends the service life of valve group 112, and reduces the periodic fluctuation of cooling medium flow.

[0248] If the absolute value is less than or equal to the preset value Ta, it indicates that the deviation between the actual subcooling and the target subcooling is within the allowable range. The controller will not perform any adjustment operations, and the distribution equipment will continue to monitor the current state.

[0249] If the absolute value is greater than the preset value Ta, it indicates that the actual deviation ΔTi deviates too much from the temperature reference value ΔT and needs to be adjusted.

[0250] At this time, the controller controls the valve group 112 to operate, thereby increasing or decreasing the opening of the diversion channel 1112a.

[0251] By comparing temperature data through the first judgment module, two different operating states—not subcooled and subcooled—can be distinguished, enabling the distribution equipment to adopt different control strategies for different states. Specifically, when not subcooled, the controller directly reduces the opening degree, allowing the cooling medium to quickly reach a subcooled state. When subcooled, the calculation module is activated, calculating the absolute value of the difference between the actual deviation ΔTi from the condensing temperature T0 and the temperature reference value ΔT. Based on the relationship between the absolute value and the preset value Ta, the controller controls the valve group 112 to increase or decrease the opening degree of the diversion channel 1112a. This control strategy improves the response speed and control efficiency of the distribution equipment.

[0252] In some embodiments, the dispensing device further includes a second judgment module, which is used to determine the magnitude of the actual deviation ΔTi and the temperature reference value ΔT.

[0253] The controller is used to control the valve group 112 corresponding to the heat exchange channel 120b when the actual deviation ΔTi is greater than the temperature reference value ΔT, so as to increase the opening of the branch channel 1112a.

[0254] Alternatively, the controller can control the valve group 112 corresponding to the heat exchange channel 120b to reduce the opening of the branch channel 1112a when the actual deviation ΔTi is less than the temperature reference value ΔT, until the absolute value is less than or equal to the preset value Ta.

[0255] Specifically, when the absolute value is greater than the preset value Ta, the controller performs different operations based on the relationship between the actual deviation ΔTi and the temperature reference value ΔT. At this time, the second judgment module is activated to determine the magnitude of the actual deviation ΔTi and the temperature reference value ΔT.

[0256] If the actual deviation ΔTi > the temperature reference value ΔT, it means that the temperature Ti is too low, and the cooling medium is over-cooled in the heat exchange channel 120b. The controller sends a command to the corresponding valve group 112 to increase the opening degree, thereby increasing the flow rate of the cooling medium flowing into the heat exchange channel 120b. After the flow rate increases, the flow velocity of the cooling medium in the heat exchange channel 120b increases and the residence time decreases, thereby preventing the cooling medium from being over-cooled in the heat exchange channel 120b. This causes the outlet temperature Ti to gradually rise until its absolute value is less than or equal to the preset value Ta.

[0257] If the actual deviation ΔTi < the temperature reference value ΔT, meaning the temperature Ti is too high, the cooling medium is not sufficiently cooled within the heat exchange channel 120b. The controller sends a command to the corresponding valve group 112 to reduce the opening, thereby reducing the flow rate of the cooling medium into the heat exchange channel 120b. After the flow rate is reduced, the flow velocity of the cooling medium in the heat exchange channel 120b decreases, the residence time is prolonged, and the heat exchange with the outside is more complete, thus causing the outlet temperature Ti to gradually decrease until its absolute value is less than or equal to the preset value Ta.

[0258] By setting the second judgment module, it is possible to determine the relationship between the actual deviation ΔTi and the temperature reference value ΔT, that is, whether the deviation between the actual deviation ΔTi and the temperature reference value ΔT is too large, due to the temperature Ti being too low or too high. This enables the controller to control the valve group 112 to increase or decrease the opening of the diversion channel 1112a, thereby ensuring the control accuracy of the controller.

[0259] By adjusting the controller settings to increase the opening of the branch flow channel 1112a when the temperature Ti is too low and decrease the opening of the branch flow channel 1112a when the temperature Ti is too high, the temperature of the cooling medium output from the heat exchange channel 120b tends to be uniform, thereby reducing the heat exchange efficiency loss caused by uneven local liquid supply and improving the overall heat exchange efficiency of the outdoor heat exchanger 100b.

[0260] In some embodiments, the allocation device further includes a first data processing module, a second acquisition module, and a first determination module.

[0261] The first data processing module is used to define at least two temperature ranges for the environment in which the outdoor heat exchanger 100b is located. The temperature ranges do not overlap with each other, and each temperature range corresponds to a temperature reference value ΔT. The higher temperature range corresponds to a larger temperature reference value ΔT.

[0262] The second acquisition module is used to acquire the ambient temperature Th of the outdoor heat exchanger 100b.

[0263] The first determining module is used to determine which temperature range the ambient temperature Th belongs to, and based on the temperature range it belongs to, to determine the temperature reference value ΔT between temperature Ti and condensation temperature T0.

[0264] Specifically, before the outdoor heat exchanger 100b operates, the first data processing module pre-defines multiple non-overlapping temperature ranges for the ambient temperature range that the outdoor heat exchanger 100b may encounter. For example: the first temperature range corresponds to the range where the ambient temperature Th is below 27℃, and the corresponding temperature reference value ΔT is set to 3℃. The second temperature range corresponds to the range where the ambient temperature Th is between 27℃ and 35℃, and the corresponding temperature reference value ΔT is set to 4℃; the third temperature range corresponds to the range where the ambient temperature Th is above 43℃, and the corresponding temperature reference value ΔT is set to 6℃.

[0265] After the outdoor heat exchanger 100b starts operating, the second acquisition module begins to work, acquiring the ambient temperature Th at which the outdoor heat exchanger 100b is located. The second acquisition module can be implemented using a temperature sensor, installed on the air inlet side of the outdoor heat exchanger 100b or at an appropriate location in the outdoor environment. The second acquisition module transmits the acquired ambient temperature Th to the first determination module.

[0266] After receiving the ambient temperature Th, the first determining module compares Th with each of the temperature intervals pre-defined by the first data processing module to determine which interval Th belongs to. For example, if the ambient temperature Th is 20℃, it belongs to the first temperature interval. If the ambient temperature Th collected by the second acquisition module is 28℃, it belongs to the second temperature interval. If the ambient temperature Th is 45℃, it belongs to the third temperature interval.

[0267] The first determining module extracts the corresponding temperature reference value ΔT from the data module based on the temperature range to which the ambient temperature Th belongs. For example, if the ambient temperature Th belongs to the first temperature range, the temperature reference value ΔT is determined to be 3℃. If the ambient temperature Th belongs to the second temperature range, the temperature reference value ΔT is determined to be 4℃. If the ambient temperature Th belongs to the third temperature range, the temperature reference value ΔT is determined to be 5℃.

[0268] The first determining module provides the temperature reference value ΔT to the data module.

[0269] By setting the first data processing module, the second acquisition module, and the first determination module, the temperature reference value ΔT can be adapted to the ambient temperature, thereby ensuring that the cooling medium can carry out sufficient heat exchange while avoiding increased energy consumption. This enables the outdoor heat exchanger 100b to maintain stable operation under different temperature conditions, improving the energy efficiency and adaptability of the outdoor heat exchanger 100b to environmental changes.

[0270] In some embodiments, the allocation device further includes a third acquisition module and a second determination module.

[0271] The third acquisition module is used to acquire the pressure P of the cooling medium in the main channel 1111a of the distributor 110b.

[0272] The second determining module is used to determine the condensation temperature T0 based on the pressure P.

[0273] Specifically, before or during the operation of the outdoor heat exchanger 100b, the third acquisition module is connected to a pressure detection device installed in the main flow channel 1111a of the distributor 110b. The pressure detection device can be a pressure sensor or a pressure switch, installed inside the inlet end 1111 of the distributor body 111 or at any position in the main flow channel 1111a, for real-time monitoring of the pressure of the cooling medium in the main flow channel 1111a.

[0274] After the outdoor heat exchanger 100b starts operating, the third acquisition module begins to work, collecting the pressure P of the cooling medium in the main channel 1111a in real time. The third acquisition module then transmits the collected pressure P to the second determination module.

[0275] After receiving the pressure P, the second determining module determines the corresponding condensation temperature T0 based on the pressure P.

[0276] By combining the third acquisition module and the second determination module, the distribution equipment no longer needs to install a temperature sensor at the outlet of the heat exchange channel 120b to measure the condensing temperature. Instead, the condensing temperature is obtained indirectly through pressure detection. The pressure sensor typically responds faster than the temperature sensor, enabling it to reflect changes in condensing temperature more quickly when operating conditions change, thus improving the controller's response speed.

[0277] In addition, the pressure sensing element is installed in the main flow channel 1111a, which is far away from the temperature fluctuation area at the outlet of the heat exchange channel 120b. The measured pressure signal is more stable, which helps to improve the stability and anti-interference ability of the controller.

[0278] In some embodiments, the distribution device further includes a second data processing module, which is used to formulate a mapping relationship between the pressure of the cooling medium in the main channel 1111a and each condensation temperature T0. In the mapping relationship, the cooling medium has multiple different pressures, and each pressure corresponds to a condensation temperature T0.

[0279] After the third acquisition module acquires the actual pressure P in the main channel 1111a, the second determination module finds the condensation temperature T0 corresponding to the pressure value that is equal to or closest to the actual pressure P by querying the mapping relationship established by the second data processing module.

[0280] By pre-determining the mapping relationship between pressure and condensation temperature through the second data processing module, the distribution equipment can quickly obtain the condensation temperature T0 without performing complex thermodynamic calculations in real time during operation, which improves the controller's operating efficiency and reduces the requirements for the controller's computing power.

[0281] In addition, the second data processing module can independently formulate mapping relationships based on the physical property parameters of different cooling media, so that the same distribution equipment can be applied to outdoor heat exchangers 100b with different cooling media types, thereby improving the versatility and portability of the distribution equipment.

[0282] Additionally, embodiments of this disclosure also include a cooling medium distribution device, comprising a processor and a memory, the memory being used to store executable instructions of the processor.

[0283] The processor is configured to execute, according to executable instructions, the method for distributing the cooling medium as provided in any of the embodiments above.

[0284] Specifically, when the allocated device is running, the processor reads executable instructions from memory and performs the following operations according to the instruction flow:

[0285] Collect the temperature Ti of the cooling medium at the outlet end of each heat exchange channel 120b and obtain the condensation temperature T0.

[0286] Determine the relationship between Ti and T0. When Ti is less than T0, calculate the absolute value of the difference between the actual deviation ΔTi and the temperature reference value ΔT. If this absolute value is greater than the preset value Ta, increase or decrease the opening of the corresponding branch channel 1112a according to the relationship between ΔTi and ΔT. When Ti is greater than or equal to T0, decrease the opening of the corresponding branch channel 1112a until Ti is less than T0.

[0287] By leveraging the processor and memory, the allocation method can be implemented as a software program on a general-purpose hardware platform, eliminating the need for custom-designed hardware logic circuits for the allocation device. This approach reduces the hardware manufacturing cost of the allocation device, improves its versatility, and facilitates subsequent upgrades and maintenance of the allocation method. When optimization of the allocation method or the addition of new control logic is required, only the executable instructions in memory need to be updated, without replacing the hardware.

[0288] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0289] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0290] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0291] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0292] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0293] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0294] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0295] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0296] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An outdoor heat exchanger, characterized in that, include: A distributor (110) includes a distributor body (111) and a plurality of valve groups (112). The distributor body (111) has an inlet end (1111) and a branch end (1112) in the axial direction. The inlet end (1111) has a main channel (1111a) for receiving cooling medium. The branch end (1112) has a plurality of branch channels (1112a), the input end of which is connected to the output end of the main channel (1111a). The plurality of valve groups (112) are disposed at the branch end (1112) and correspond to each branch channel (1112a). The valve groups (112) are configured to control the opening degree of each branch channel (1112a). Multiple heat exchange channels (120), each heat exchange channel (120) corresponds to a branch channel (1112a), and the inlet end of the heat exchange channel (120) is connected to the output end of the corresponding branch channel (1112a); A liquid collecting channel (130) is provided, the inlet end of which is connected to the outlet end of each of the heat exchange channels (120). Temperature detection element: Each of the heat exchange channels (120) is provided with a corresponding temperature detection element at the outlet end. The temperature detection element is used to monitor the temperature of the cooling medium at the outlet end of the heat exchange channel (120). A controller is connected to the temperature sensor and the valve assembly (112). The controller is configured to control the valve assembly (112) to operate according to the temperature detected by the temperature sensor, thereby adjusting the opening of the corresponding flow channel (1112a).

2. The outdoor heat exchanger according to claim 1, characterized in that, The valve assembly (112) includes a plug (1121) which is radially arranged relative to the corresponding diversion channel (1112a) to adjust the opening degree of the corresponding diversion channel (1112a). The valve assembly (112) further includes a drive member (1122), the drive member (1122) having an electromagnetic drive part (1122a), the electromagnetic drive part (1122a) having a cavity, and a portion of the sealing member (1121) being disposed within the cavity; The electromagnetic drive unit (1122a) is connected to the controller and is configured to control the extension and retraction of the sealing member (1121) relative to the corresponding diversion channel (1112a) when energized.

3. The outdoor heat exchanger according to claim 1, characterized in that, It also includes a pressure detection element, which is disposed in the main channel (1111a) to monitor the pressure of the cooling medium in the main channel (1111a); The controller is connected to the pressure sensor and is configured to control the valve group (112) to adjust the opening of the corresponding flow channel (1112a) based on the detection results of the temperature sensor and the pressure sensor.

4. The outdoor heat exchanger according to any one of claims 1-3, characterized in that, The inlet end (1111) and the branch end (1112) are located at both ends of the distributor body (111) in the axial direction. Each branch channel (1112a) extends in the axial direction of the distributor body (111), and the output end of each branch channel (1112a) is located on the end face of the branch end (1112). Along the circumference of the distributor body (111), the plurality of diversion channels (1112a) are spaced apart on the diversion end (1112).

5. The outdoor heat exchanger according to claim 4, characterized in that, The diameter of each of the described branch channels (1112a) is the same.

6. A method for distributing a cooling medium, characterized in that, An outdoor heat exchanger as described in any one of claims 1-5 is provided; the outdoor heat exchanger includes a distributor (110) and a plurality of heat exchange channels (120), wherein the distributor (110) has a plurality of branch channels (1112a) in its branch end (1112); the outlet end of each heat exchange channel (120) is connected to the output end of a branch channel (1112a), and the outdoor heat exchanger is provided with a valve group (112) at the position corresponding to each branch channel (1112a); The allocation method includes the following steps: Step S100: Collect the temperature Ti of the cooling medium at the outlet end of the multiple heat exchange channels (120), and obtain the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channels (120). Step S200: Preset the temperature reference value ΔT between the cooling medium temperature and the condensation temperature T0 at the outlet end of the heat exchange channel (120); Step S300: Determine the magnitude of the temperature Ti and the condensation temperature T0; Step S310: If the temperature Ti is less than the condensing temperature T0, calculate the absolute value of the difference between the actual deviation ΔTi of the temperature Ti and the condensing temperature T0 and the temperature reference value ΔT, and determine whether the absolute value is greater than the preset value Ta; when the absolute value is greater than the preset value Ta, control the valve group (112) corresponding to the heat exchange channel (120) according to the size of the actual deviation ΔTi and the temperature reference value ΔT, so as to increase or decrease the opening of the branch channel (1112a) until the absolute value is less than or equal to the preset value Ta; Step S320: If the temperature Ti is greater than or equal to the condensation temperature T0, then control the valve group (112) corresponding to the heat exchange channel (120) to reduce the opening of the branch channel (1112a) until the temperature Ti is less than the condensation temperature T0.

7. The allocation method according to claim 6, characterized in that, The preset value Ta is any fixed value that is greater than 0℃ and less than or equal to 2℃.

8. The allocation method according to claim 6, characterized in that, In step S310, when the absolute value is greater than the preset value Ta, the valve group (112) corresponding to the heat exchange channel (120) is controlled according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT to increase or decrease the opening of the diversion channel (1112a), specifically including: Step S311: Determine the magnitude of the actual deviation ΔTi and the temperature reference value ΔT; Step S312: If the actual deviation ΔTi is greater than the temperature reference value ΔT, then control the valve group (112) corresponding to the heat exchange channel (120) to increase the opening of the diversion channel (1112a); Step S313: If the actual deviation ΔTi is less than the temperature reference value ΔT, then control the valve group (112) corresponding to the heat exchange channel (120) to reduce the opening of the diversion channel (1112a) until the absolute value is less than or equal to the preset value Ta.

9. The allocation method according to claim 6, characterized in that, The temperature reference value ΔT is any fixed value between 3°C and 8°C.

10. The allocation method according to claim 9, characterized in that, In step S200, the preset temperature reference value ΔT between the cooling medium temperature at the outlet end of the heat exchange channel (120) and the condensation temperature T0 specifically includes: Step S210: Define at least two temperature ranges for the environment where the outdoor heat exchanger is located. The temperature ranges do not overlap with each other. Each temperature range corresponds to a temperature reference value ΔT, and the higher temperature range corresponds to a larger temperature reference value ΔT. Step S220: Collect the ambient temperature Th at the location of the outdoor heat exchanger; Step S230: Determine which temperature range the ambient temperature Th belongs to, and determine the temperature reference value ΔT between the temperature Ti and the condensation temperature T0 based on the temperature range to which it belongs.

11. The allocation method according to claim 6, characterized in that, The distributor (110) has a main flow channel (1111a) in its inlet end (1111), and the outdoor heat exchanger also includes a pressure detection element for monitoring the pressure P of the cooling medium in the main flow channel (1111a). The step S100, which involves obtaining the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel (120), specifically includes: The pressure P is collected; The condensation temperature T0 is determined based on the pressure P.

12. The allocation method according to claim 11, characterized in that, Before the real-time acquisition of the pressure P, the allocation method includes the following steps: A mapping relationship is established between the pressure of the cooling medium in the main channel (1111a) and each of the condensation temperatures T0. In the mapping relationship, the cooling medium has multiple different pressures, and each pressure corresponds to a condensation temperature T0.

13. The allocation method according to any one of claims 6-12, characterized in that, The allocation method includes the following steps: After adjusting the opening of the diversion channel (1112a), repeat steps S100 to S300.

14. A cooling medium distribution device, characterized in that, An outdoor heat exchanger as described in any one of claims 1-5 is provided; the outdoor heat exchanger includes a distributor (110) and a plurality of heat exchange channels (120), wherein the distributor (110) has a plurality of branch channels (1112a) in its branching end (1112); the outlet end of each heat exchange channel (120) is respectively connected to the output end of one of the branch channels (1112a), and the outdoor heat exchanger is provided with a valve group (112) at the position corresponding to each of the branch channels (1112a); the distribution device includes: The first acquisition module is used to acquire the temperature Ti of the cooling medium at the outlet end of the multiple heat exchange channels (120); The acquisition module is used to acquire the condensation temperature T0 of the cooling medium at the outlet end of the heat exchange channel (120); The data module is pre-set with a temperature reference value ΔT between the cooling medium temperature and the condensation temperature T0 at the outlet end of the heat exchange channel (120). The first judgment module is used to determine the magnitude of the temperature Ti and the condensation temperature T0; The calculation module is used to calculate the absolute value of the difference between the actual deviation ΔTi between the temperature Ti and the condensation temperature T0 and the temperature reference value ΔT when the temperature Ti is less than the condensation temperature T0. The controller is configured to, when the absolute value is greater than a preset value Ta, control the valve group (112) corresponding to the heat exchange channel (120) according to the magnitude of the actual deviation ΔTi and the temperature reference value ΔT, to increase or decrease the opening of the branch channel (1112a) until the absolute value is less than or equal to the preset value Ta; or, the controller is configured to, when the temperature Ti is greater than or equal to the condensing temperature T0, control the valve group (112) corresponding to the heat exchange channel (120) to decrease the opening of the branch channel (1112a) until the temperature Ti is less than the condensing temperature T0.

15. The dispensing device according to claim 14, characterized in that, It also includes a second judgment module, which is used to judge the magnitude of the actual deviation ΔTi and the temperature reference value ΔT; The controller is used to control the valve group (112) corresponding to the heat exchange channel (120) to increase the opening of the diversion channel (1112a) when the actual deviation ΔTi is greater than the temperature reference value ΔT. Alternatively, the controller is used to control the valve group (112) corresponding to the heat exchange channel (120) when the actual deviation ΔTi is less than the temperature reference value ΔT, so as to reduce the opening of the diversion channel (1112a) until the absolute value is less than or equal to the preset value Ta.

16. The dispensing device according to claim 14, characterized in that, Also includes: The first data processing module is used to define at least two temperature ranges for the environment where the outdoor heat exchanger is located. The temperature ranges do not overlap with each other. Each temperature range corresponds to a temperature reference value ΔT, and the higher temperature range corresponds to a larger temperature reference value ΔT. The second acquisition module is used to acquire the ambient temperature Th of the outdoor heat exchanger. The first determining module is used to determine which temperature range the ambient temperature Th belongs to, and to determine the temperature reference value ΔT between the temperature Ti and the condensation temperature T0 based on the temperature range to which the ambient temperature Th belongs.

17. The dispensing device according to claim 14, characterized in that, Also includes: The third acquisition module is used to acquire the pressure P of the cooling medium in the main channel (1111a) of the distributor (110); The second determining module is used to determine the condensation temperature T0 based on the pressure P.

18. The dispensing device according to claim 17, characterized in that, It also includes a second data processing module, which is used to formulate a mapping relationship between the pressure of the cooling medium in the main channel (1111a) and each of the condensation temperatures T0. In the mapping relationship, the cooling medium has multiple different pressures, and each pressure corresponds to a condensation temperature T0.

19. A cooling medium distribution device, characterized in that, include: processor; A memory for storing executable instructions of the processor; The processor is configured to perform the method for distributing the cooling medium as described in any one of claims 6-13, according to the executable instructions.

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