Multi-connected power heat pipe air conditioner and fluorine pump lift establishment method

Abstract

The application discloses a multi-connected power heat pipe air conditioner and a fluorine pump lift establishing method. The method comprises the following steps: recording the difference between the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet as the fluorine pump lift, and recording the difference between the temperature of the fluorine pump inlet and the surface temperature of the pipeline between the input end of the liquid accumulator and the outlet of the first heat exchange channel as the suction medium intervention temperature; according to the fluorine pump lift, the refrigerant at the outlet of the first heat exchange channel is selectively transferred to the fluorine pump inlet, and according to the suction medium intervention temperature, the refrigerant at the fluorine pump inlet is selectively transferred to the inlet of the first heat exchange channel. The application can effectively solve the problem that the fluorine pump lift cannot be established due to the gaseous refrigerant in the fluorine pump inlet pipeline during the opening or operation of the fluorine pump, and prevent the fluorine pump from being damaged due to the suction cavitation of the fluorine pump during the opening or operation of the fluorine pump.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of multi-connected system manufacturing, in particular to a multi-connected power heat pipe air conditioner and a fluorine pump head establishment method. BACKGROUND

[0002] In the prior art, fluorine pump technology and multi-connected air conditioner technology are introduced into data center refrigeration to improve system operation energy efficiency and reduce the ratio of all energy consumed by the computer room air conditioner to the energy consumed by the IT load, so as to achieve energy saving and emission reduction.

[0003] The existing multi-connected power heat pipe air conditioner needs to use a fluorine pump to increase the pressure of the refrigerant during operation. However, when the fluorine pump is started, if the liquid refrigerant supply is insufficient, or the fluorine pump inlet pipeline refrigerant is gasified due to long-term shutdown, the fluorine pump cannot establish the pressure difference before and after the fluorine pump. At this time, the system cannot supplement the liquid refrigerant to the fluorine pump through other measures, which will cause the multi-connected power heat pipe air conditioner to be unable to provide cooling capacity, and the system will be in a state of insufficient liquid supply for a long time, which is easy to cause the fluorine pump to be damaged due to suction cavitation, and seriously affects the stability of the system. SUMMARY

[0004] The purpose of the present application is to provide a multi-connected power heat pipe air conditioner and a fluorine pump head establishment method, which can effectively solve the problem of fluorine pump startup failure due to gaseous refrigerant in the fluorine pump inlet pipeline during the fluorine pump opening or operation process, and prevent the fluorine pump from being damaged due to suction cavitation during the fluorine pump opening or operation process.

[0005] In order to achieve the above-mentioned purpose, the present application discloses a multi-connected power heat pipe air conditioner, which comprises a total gas pipe, a total liquid pipe and a plurality of outdoor units, the total gas pipe is used for transmitting and converging gaseous refrigerant, the total liquid pipe is used for transmitting and converging liquid refrigerant, the outdoor unit comprises a first condensing coil, a plate heat exchanger, a gas pipe branch, a liquid pipe branch, a liquid accumulator, a fluorine pump assembly and a head establishment assembly, the plate heat exchanger comprises a first heat exchange channel, a first end of the first condensing coil is connected to an inlet of the first heat exchange channel through a pipeline, and a second end is connected to the gas pipe branch, the fluorine pump assembly is provided with a fluorine pump inlet and a fluorine pump outlet, an input end of the liquid accumulator is connected to an outlet of the first heat exchange channel, and an output end is connected to the fluorine pump inlet, the fluorine pump outlet is connected to the total liquid pipe through the liquid pipe branch, and the head establishment assembly can selectively transfer the refrigerant of the fluorine pump inlet to the inlet of the first heat exchange channel and can selectively transfer the refrigerant of the outlet of the first heat exchange channel to the fluorine pump inlet.

[0006] Preferably, the fluorine pump assembly comprises a first fluorine pump, a first one-way valve, a second fluorine pump and a second one-way valve, an input end of the first fluorine pump and an input end of the second fluorine pump are connected in parallel to the fluorine pump inlet, an input end of the first one-way valve is connected to an output end of the first fluorine pump, an input end of the second one-way valve is connected to an output end of the second fluorine pump, an output end of the first one-way valve and an output end of the second one-way valve are connected in parallel to the fluorine pump outlet, one end of the gas pipe branch is connected to the fluorine pump outlet, and the other end is connected to the total gas pipe.

[0007] Preferably, the head establishment assembly comprises a first electromagnetic valve, a second electromagnetic valve, a suction pump, a third one-way valve, a first temperature sensor, a second temperature sensor, a first pressure sensor and a second pressure sensor, the fluorine pump inlet is connected to one end of the first electromagnetic valve and one end of the second electromagnetic valve respectively, the other end of the first electromagnetic valve is connected between the input end of the liquid reservoir and the outlet of the first heat exchange channel, the other end of the second electromagnetic valve is connected to the input end of the suction pump, the output end of the suction pump is connected to the input end of the third one-way valve, the output end of the third one-way valve is connected to the inlet of the first heat exchange channel, the first temperature sensor is used to detect the surface temperature of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel, the second temperature sensor is used to detect the temperature of the fluorine pump inlet, the first pressure sensor is used to detect the inlet pressure of the fluorine pump inlet, and the second pressure sensor is used to detect the outlet pressure of the fluorine pump outlet.

[0008] Preferably, the outdoor unit further comprises a second condenser coil and a compressor, and the plate heat exchanger further comprises a second heat exchange channel, a first end of the second condenser coil is connected to the exhaust end of the compressor, a second end is connected to the inlet of the second heat exchange channel, and the suction end of the compressor is connected to the outlet of the second heat exchange channel.

[0009] Preferably, the outdoor unit further comprises a gas pipe ball valve and a liquid pipe ball valve, the gas pipe ball valve is connected in series on the gas pipe branch, and the liquid pipe ball valve is connected in series on the liquid pipe branch.

[0010] Correspondingly, the application also discloses a fluorine pump head establishment method applied to the multi-connected power heat pipe air conditioner.

[0011] S1, when the fluorine pump assembly is started, the surface temperature of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel, the temperature of the fluorine pump inlet, the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet are collected respectively;

[0012] S2, calculating the difference between the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet, recording the difference between the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet as the fluorine pump head, and calculating the difference between the temperature of the fluorine pump inlet and the surface temperature of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel, recording the difference between the temperature of the fluorine pump inlet and the surface temperature of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel as the suction medium intervention temperature;

[0013] S3, selectively transferring the refrigerant at the outlet of the first heat exchange channel to the inlet of the fluorine pump according to the fluorine pump head, and selectively transferring the refrigerant at the inlet of the fluorine pump to the inlet of the first heat exchange channel according to the suction medium intervention temperature.

[0014] Preferably, the first electromagnetic valve is initially in a closed state, and in the step S3, selectively transferring the refrigerant at the outlet of the first heat exchange channel to the inlet of the fluorine pump according to the fluorine pump head specifically includes:

[0015] If the fluorine pump head is less than a first preset threshold value within a first preset time, the first electromagnetic valve is opened to transfer the refrigerant at the outlet of the first heat exchange channel to the inlet of the fluorine pump.

[0016] If the fluorine pump head is greater than a second preset threshold value within a second preset time after the first electromagnetic valve is opened, the first electromagnetic valve is closed to terminate the transfer of the refrigerant at the outlet of the first heat exchange channel to the inlet of the fluorine pump.

[0017] Preferably, the second electromagnetic valve and the suction pump are initially in a closed state, and in the step S3, selectively transferring the refrigerant at the inlet of the fluorine pump to the inlet of the first heat exchange channel according to the suction medium intervention temperature specifically includes:

[0018] If the suction medium intervention temperature is greater than a third preset threshold value within a third preset time, the second electromagnetic valve and the suction pump are opened at the same time to transfer the refrigerant at the inlet of the fluorine pump to the inlet of the first heat exchange channel.

[0019] If the suction medium intervention temperature is less than a fourth preset threshold value within a fourth preset time after the second electromagnetic valve and the suction pump are opened, or the fluorine pump head is greater than a fifth preset threshold value within a fifth preset time after the second electromagnetic valve and the suction pump are opened, the second electromagnetic valve and the suction pump are closed to terminate the transfer of the refrigerant at the inlet of the fluorine pump to the inlet of the first heat exchange channel.

[0020] Preferably, the second electromagnetic valve and the air extraction pump are initially in a closed state, and in step S3, the refrigerant at the fluorine pump inlet is selectively transferred to the inlet of the first heat exchange channel according to the air extraction intervention temperature, further comprising:

[0021] If the air extraction intervention temperature is greater than or equal to a fourth preset threshold within a fifth preset time after the second electromagnetic valve and the air extraction pump are opened, or the fluorine pump head is less than or equal to a fifth preset threshold within the fifth preset time after the second electromagnetic valve and the air extraction pump are opened, the second electromagnetic valve and the air extraction pump are closed for a sixth preset time and then opened until the second electromagnetic valve and the air extraction pump meet the closing condition.

[0022] Correspondingly, the application also discloses a computer readable storage medium for storing a computer program, which is executed by a processor to realize the fluorine pump head establishment method.

[0023] Compared with the prior art, the application adds a head establishment assembly, selectively transfers the refrigerant at the outlet of the first heat exchange channel to the fluorine pump inlet according to the fluorine pump head, and selectively transfers the refrigerant at the fluorine pump inlet to the inlet of the first heat exchange channel according to the air extraction intervention temperature, thereby effectively solving the problem that the fluorine pump cannot establish a head due to the existence of gaseous refrigerant in the fluorine pump inlet pipe during the opening or running of the fluorine pump, and preventing damage due to air entrainment cavitation of the fluorine pump during the opening or running of the fluorine pump. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of a multi-connected power heat pipe air conditioner structure of the application;

[0025] Figure 2 is a flow chart of the multi-connected power heat pipe air conditioner of the application. DETAILED DESCRIPTION

[0026] To illustrate the technical content, structural features, purposes and effects of the application, the following describes the embodiments in detail with reference to the drawings.

[0027] Please refer to Figure 1 and Figure 2 , the fluorine pump head establishment method of the embodiment is applied to a multi-connected power heat pipe air conditioner, which comprises a total gas pipe 10, a total liquid pipe 20 and a plurality of outdoor units 30, the total gas pipe 10 is used for transmitting and converging gaseous refrigerant, and the total liquid pipe 20 is used for transmitting and converging liquid refrigerant. A plurality of indoor units (not shown in the figure) are connected in parallel to the total gas pipe 10 and the total liquid pipe 20.

[0028] The outdoor unit 30 comprises a first condensing coil 31, a plate heat exchanger 32, a gas pipe branch 33, a liquid pipe branch 34, a liquid accumulator 35, a fluorine pump assembly and a head establishment assembly. The plate heat exchanger 32 comprises a first heat exchange channel 321. A first end of the first condensing coil 31 is connected to an inlet of the first heat exchange channel 321, and a second end is connected to the gas pipe branch 33.

[0029] The fluorine pump assembly is provided with a fluorine pump inlet 361 and a fluorine pump outlet 362. An input end of the liquid accumulator 35 is connected to an outlet of the first heat exchange channel 321, and an output end is connected to the fluorine pump inlet 361. The fluorine pump outlet 362 is connected to the total liquid pipe 20 through the liquid pipe branch 34. Specifically, the fluorine pump assembly comprises a first fluorine pump 363, a first one-way valve 364, a second fluorine pump 365 and a second one-way valve 366. The input end of the first fluorine pump 363 and the input end of the second fluorine pump 365 are connected in parallel and then connected to the fluorine pump inlet 361. The input end of the first one-way valve 364 is connected to the output end of the first fluorine pump 363. The input end of the second one-way valve 366 is connected to the output end of the second fluorine pump 365. The output end of the first one-way valve 364 and the output end of the second one-way valve 366 are connected in parallel and then connected to the fluorine pump outlet 362. One end of the liquid pipe branch 34 is connected to the fluorine pump outlet 362, and the other end is connected to the total liquid pipe 20.

[0030] Through the above arrangement, when the power heat pipe air conditioner of the embodiment only runs in the compressor mode to cool and exchange heat for the first heat exchange channel 321 of the plate heat exchanger 32, the electromagnetic valve 2 is opened and the electromagnetic valve 1 is closed at this time, so as to bypass the first condensing coil 31. When the power heat pipe air conditioner of the embodiment runs in the mixed mode or the heat pipe mode, the electromagnetic valve 2 is closed and the electromagnetic valve 1 is opened at this time. The refrigerant exchanges heat after passing through the first condensing coil 31 and then enters the first heat exchange channel 321 of the plate heat exchanger 32 to cool and exchange heat.

[0031] The head establishment assembly of the embodiment can selectively transfer the refrigerant at the fluorine pump inlet 361 to the inlet of the first heat exchange channel 321, and can selectively transfer the refrigerant at the outlet of the first heat exchange channel 321 to the fluorine pump inlet 361. Specifically, the head establishment assembly comprises a first electromagnetic valve 371, a second electromagnetic valve 372, a gas pump 373, a third one-way valve 374, a first temperature sensor 375, a second temperature sensor 376, a first pressure sensor 377 and a second pressure sensor 378. The fluorine pump inlet 361 is connected to one end of the first electromagnetic valve 371 and one end of the second electromagnetic valve 372, respectively. The other end of the first electromagnetic valve 371 is connected between the input end of the liquid accumulator 35 and the outlet of the first heat exchange channel 321. The other end of the second electromagnetic valve 372 is connected to the input end of the gas pump 373. The output end of the gas pump 373 is connected to the input end of the third one-way valve 374. The output end of the third one-way valve 374 is connected to the inlet of the first heat exchange channel 321.

[0032] It can be understood that the gaseous refrigerant entering from the total trachea 10 is converted into liquid refrigerant after passing through the first condensing coil 31 and the first heat exchange channel 321 of the plate heat exchanger 32 in turn and is stored in the liquid accumulator 35. The above structure constitutes a first circulation loop of the outdoor unit 30 based on the first condensing coil 31 of the embodiment, and the state conversion process is well known to those skilled in the art and will not be described here.

[0033] The first temperature sensor 375 is used to detect the surface temperature of the pipeline between the input end of the liquid accumulator 35 and the outlet of the first heat exchange channel 321, the second temperature sensor 376 is used to detect the temperature of the fluorine pump inlet 361, the first pressure sensor 377 is used to detect the inlet pressure of the fluorine pump inlet 361, and the second pressure sensor 378 is used to detect the outlet pressure of the fluorine pump outlet 362. It can be understood that the first temperature sensor 375 and the second temperature sensor 376 are respectively attached to the outer surface of the corresponding pipeline to detect the surface temperature of the pipeline, and the refrigerant temperature in the pipeline can be indirectly known through the surface temperature of the pipeline.

[0034] The data collected by the first temperature sensor 375, the second temperature sensor 376, the first pressure sensor 377 and the second pressure sensor 378 are respectively communicated to the processing unit. The processing unit can be a processing terminal built in the outdoor unit 30, a processing terminal of the multi-connected power heat pipe air conditioner, or a processing terminal independent of the multi-connected power heat pipe air conditioner. The processing terminal controls the head establishment assembly to execute specific instructions according to the received data.

[0035] Preferably, the outdoor unit 30 further comprises a second condensing coil 38 and a compressor 39, and the plate heat exchanger 32 further comprises a second heat exchange channel 322. The first end of the second condensing coil 38 is connected to the exhaust end of the compressor 39, the second end is connected to the inlet of the second heat exchange channel 322, and the suction end of the compressor 39 is connected to the outlet of the second heat exchange channel 322.

[0036] It can be understood that the second condensing coil 38, the compressor 39 and the second heat exchange channel 322 of the plate heat exchanger 32 constitute a second circulation loop of the outdoor unit 30 based on the second condensing coil 38 of the embodiment. The pipeline of the second circulation loop stores refrigerant, and the refrigerant circulates under the action of the compressor 39. The state is constantly converted between gaseous and liquid states, and the state conversion process is well known to those skilled in the art and will not be described here.

[0037] Preferably, the outdoor unit 30 further comprises a gas pipe ball valve 310 and a liquid pipe ball valve 320. The gas pipe ball valve 310 is connected in series to the gas pipe branch 33 for separately controlling the on-off of the gas pipe branch 33 and the refrigerant flow on the gas pipe branch 33. The liquid pipe ball valve 320 is connected in series to the liquid pipe branch 34 for separately controlling the on-off of the liquid pipe branch 34 and the refrigerant flow on the liquid pipe branch 34.

[0038] The fluorine pump head establishment method of the embodiment comprises the following steps:

[0039] S1, when the fluorine pump assembly is started, the surface temperature of the pipeline between the input end of the liquid reservoir 35 and the outlet of the first heat exchange channel 321, the temperature of the fluorine pump inlet 361, the outlet pressure of the fluorine pump outlet 362, and the inlet pressure of the fluorine pump inlet 361 are collected respectively.

[0040] Here, the collection is performed by the first temperature sensor 375, the second temperature sensor 376, the first pressure sensor 377, and the second pressure sensor 378 respectively. The outlet pressure of the fluorine pump outlet 362 is the refrigerant pressure at the fluorine pump outlet 362, and the inlet pressure of the fluorine pump inlet 361 is the refrigerant pressure at the fluorine pump inlet 361.

[0041] S2, the difference between the outlet pressure of the fluorine pump outlet 362 and the inlet pressure of the fluorine pump inlet 361 is calculated, the difference between the outlet pressure of the fluorine pump outlet 362 and the inlet pressure of the fluorine pump inlet 361 is recorded as the fluorine pump head, and the difference between the temperature of the fluorine pump inlet 361 and the surface temperature of the pipeline between the input end of the liquid reservoir 35 and the outlet of the first heat exchange channel 321 is calculated, the difference between the temperature of the fluorine pump inlet 361 and the surface temperature of the pipeline between the input end of the liquid reservoir 35 and the outlet of the first heat exchange channel 321 is recorded as the suction intervention temperature.

[0042] S3, according to the fluorine pump head, the refrigerant at the outlet of the first heat exchange channel 321 is selectively transferred to the fluorine pump inlet 361, and according to the suction intervention temperature, the refrigerant at the fluorine pump inlet 361 is selectively transferred to the inlet of the first heat exchange channel 321.

[0043] Preferably, the first electromagnetic valve 371 is in a closed state in the initial state, and in the step S3, according to the fluorine pump head, the refrigerant at the outlet of the first heat exchange channel 321 is selectively transferred to the fluorine pump inlet 361, which specifically comprises:

[0044] If the fluorine pump lift is less than a first preset threshold value within a first preset time (e.g. 10 seconds), the first electromagnetic valve 371 is opened to transfer the refrigerant at the outlet of the first heat exchange channel 321 to the fluorine pump inlet 361. The first preset threshold value can be A, and the value of A can be adjusted according to the equipment parameters. The optimal value of A is generally the break flow pressure difference of the fluorine pump. The judgment process is essentially the opening condition of the first electromagnetic valve 371.

[0045] If the fluorine pump lift is greater than a second preset threshold value (e.g. the value of the second preset threshold value can be A+1, which is greater than the value of A to avoid misjudgment) within a second preset time (e.g. 10 seconds) after the first electromagnetic valve 371 is opened, the first electromagnetic valve 371 is closed to terminate the transfer of the refrigerant at the outlet of the first heat exchange channel 321 to the fluorine pump inlet 361. The judgment process is essentially the closing condition of the first electromagnetic valve 371.

[0046] It can be understood that the above steps selectively transfer the refrigerant at the outlet of the first heat exchange channel 321 to the fluorine pump inlet 361 by controlling the opening and closing of the first electromagnetic valve 371. The control basis is that when the lift of the fluorine pump assembly is small after the first fluorine pump 363 or the second fluorine pump 365 is opened, it indicates that the fluorine pump assembly cannot absorb enough liquid refrigerant. Therefore, it can be determined that there is gaseous refrigerant or other gas in the pipeline in front of the fluorine pump inlet 361 of the fluorine pump assembly, or the fluorine pump assembly cannot absorb liquid refrigerant. In this embodiment, the first electromagnetic valve 371 is opened. One end of the first electromagnetic valve 371 is connected to the outlet of the first heat exchange channel 321 of the plate heat exchanger 32. The outlet of the first heat exchange channel 321 is the primary outlet of the liquid refrigerant. Therefore, a pipeline can be added to directly reach the fluorine pump inlet 361 without passing through the liquid reservoir 35, which is more direct and effective.

[0047] Preferably, the second electromagnetic valve 372 and the air suction pump 373 are in the initial closed state. In step S3, the refrigerant at the fluorine pump inlet 361 is selectively transferred to the inlet of the first heat exchange channel 321 according to the air suction intervention temperature, which specifically includes:

[0048] If the air suction intervention temperature is greater than a third preset threshold value within a third preset time (e.g. 10 seconds), the second electromagnetic valve 372 and the air suction pump 373 are opened at the same time to transfer the refrigerant at the fluorine pump inlet 361 to the inlet of the first heat exchange channel 321. The third preset threshold value can be B, and the value of B can be adjusted according to the equipment parameters. The judgment process is essentially the opening condition of the second electromagnetic valve 372 and the air suction pump 373.

[0049] If the suction intervention temperature is less than a fourth preset threshold (e.g., the value of the fourth preset threshold can be B-5, which is less than the value of B, to avoid misjudgment) within a fourth preset time (e.g., 10 seconds) after the second electromagnetic valve 372 and the suction pump 373 are opened, or the fluorine pump lift is greater than a fifth preset threshold (e.g., the value of the fifth preset threshold can be B, which can be related to the second threshold, e.g., the value of A+2, which is greater than the value of A, to avoid misjudgment, of course, the value of B can not be related to the second threshold, which is not limited here) within a fifth preset time (e.g., 10 seconds) after the second electromagnetic valve 372 and the suction pump 373 are opened, the second electromagnetic valve 372 and the suction pump 373 are closed to terminate the transfer of the refrigerant at the fluorine pump inlet 361 to the inlet of the first heat exchange channel 321. The judgment process here is essentially the closing condition of the second electromagnetic valve 372 and the suction pump 373.

[0050] If the suction intervention temperature is greater than or equal to the fourth preset threshold within the fifth preset time (e.g., 3 minutes) after the second electromagnetic valve 372 and the suction pump 373 are opened, or the fluorine pump lift is less than or equal to the fifth preset threshold within the fifth preset time after the second electromagnetic valve 372 and the suction pump 373 are opened, the second electromagnetic valve 372 and the suction pump 373 are opened after being closed for a sixth preset time (e.g., 2 minutes), and the second electromagnetic valve 372 and the suction pump 373 are opened until the second electromagnetic valve 372 and the suction pump 373 meet the closing condition.

[0051] It can be understood that the above steps selectively transfer the refrigerant at the fluorine pump inlet 361 to the inlet of the first heat exchange channel 321 by controlling the opening and closing of the second electromagnetic valve 372 and the suction pump 373, and the control basis is: after the fluorine pump assembly is opened, if the suction intervention temperature is large, it indicates that there is gaseous refrigerant in the fluorine pump inlet 361 section, and the suction process needs to be performed on the fluorine pump inlet 361 section. In this embodiment, the gaseous refrigerant returned from the first condensing coil 31 is collected to the inlet of the first heat exchange channel 321 by opening the second electromagnetic valve 372 and the suction pump 373, so that the gaseous refrigerant to be transferred is liquefied again in the first heat exchange channel 321.

[0052] It is worth noting that the fluorine pump assembly of the present embodiment is formed by parallel connection of two fluorine pump branches formed by series connection of fluorine pumps and one-way valves, which can form backup and rotation operation of each fluorine pump branch, and improve the operation reliability of the fluorine pump assembly. In other embodiments, the fluorine pump branch can be increased or decreased according to actual production needs, which is not limited here.

[0053] Further, the embodiment can also independently control the fluorine pump assembly. Specifically, when the fluorine pump assembly is started, the fluorine pump of the two pipelines may be started at the same time. Generally, when the fluorine pump assembly is started, the temperature difference condition is satisfied first, the air pump 373 is started first, and then the pressure difference condition causes the first electromagnetic valve 371 to be started. However, because the power of the air pump 373 is small, when the air pump 373 and the fluorine pump are started at the same time, even if the self-circulation of the lift establishing assembly is formed, the air pump 373 cannot steal the liquid refrigerant of the fluorine pump assembly. With the establishment of the fluorine pump lift, the air pump 373 achieves the closing condition and can end the auxiliary pumping of the air pump 373.

[0054] Correspondingly, the application also discloses a computer readable storage medium for storing a computer program, which is executed by a processor to realize the fluorine pump lift establishing method.

[0055] In combination with Figure 1 and Figure 2 , the application adds the lift establishing assembly, selectively transfers the refrigerant at the outlet of the first heat exchange channel 321 to the fluorine pump inlet 361 according to the fluorine pump lift, and selectively transfers the refrigerant at the fluorine pump inlet 361 to the inlet of the first heat exchange channel 321 according to the air intervention temperature. The two lift establishing paths are set, one is to transfer the refrigerant at the outlet of the first heat exchange channel 321 to the fluorine pump inlet 361, and the other is to transfer the refrigerant at the fluorine pump inlet 361 to the inlet of the first heat exchange channel 321. The two paths are complementary to each other, and both are to remove the gaseous refrigerant at the fluorine pump inlet 361, so as to establish the lift and effectively solve the problem that the fluorine pump cannot establish the lift due to the gaseous refrigerant in the fluorine pump inlet pipeline during the starting or running of the fluorine pump, and prevent the fluorine pump from being damaged due to air entrainment cavitation during the starting or running of the fluorine pump.

[0056] The above only discloses preferred embodiments of the application, and of course cannot limit the scope of the application. Therefore, equivalent changes made according to the patent application scope of the application still fall within the scope of the application.

Claims

1. A multi-connected power heat pipe air conditioner, characterized by: The system comprises a total gas pipe for transmitting converged gaseous refrigerant, a total liquid pipe for transmitting converged liquid refrigerant, and a plurality of outdoor units, each of which comprises a first condensing coil, a plate heat exchanger, a gas pipe branch, a liquid pipe branch, a liquid accumulator, a fluorine pump assembly, and a head establishment assembly, the plate heat exchanger comprises a first heat exchange channel, a first end of the first condensing coil is connected to an inlet of the first heat exchange channel, and a second end of the first condensing coil is connected to the gas pipe branch, the fluorine pump assembly is provided with a fluorine pump inlet and a fluorine pump outlet, an input end of the liquid accumulator is connected to an outlet of the first heat exchange channel, and an output end of the liquid accumulator is connected to the fluorine pump inlet, the fluorine pump outlet is connected to the total liquid pipe through the liquid pipe branch, and the head establishment assembly can selectively transfer refrigerant at the fluorine pump inlet to the inlet of the first heat exchange channel and can selectively transfer refrigerant at the outlet of the first heat exchange channel to the fluorine pump inlet. The fluorine pump assembly comprises a first fluorine pump, a first one-way valve, a second fluorine pump, and a second one-way valve, an input end of the first fluorine pump and an input end of the second fluorine pump are connected in parallel and then connected to the fluorine pump inlet, an input end of the first one-way valve is connected to an output end of the first fluorine pump, an input end of the second one-way valve is connected to an output end of the second fluorine pump, and an output end of the first one-way valve and an output end of the second one-way valve are connected in parallel and then connected to the fluorine pump outlet, one end of the liquid pipe branch is connected to the fluorine pump outlet, and the other end of the liquid pipe branch is connected to the total liquid pipe. The head establishment assembly comprises a first electromagnetic valve, a second electromagnetic valve, a gas pump, a third one-way valve, a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor, the fluorine pump inlet is connected to one end of the first electromagnetic valve and one end of the second electromagnetic valve, respectively, the other end of the first electromagnetic valve is connected between the input end of the liquid accumulator and the outlet of the first heat exchange channel, the other end of the second electromagnetic valve is connected to an input end of the gas pump, an output end of the gas pump is connected to an input end of the third one-way valve, an output end of the third one-way valve is connected to the inlet of the first heat exchange channel, the first temperature sensor is used to detect the surface temperature of a pipeline between the input end of the liquid accumulator and the outlet of the first heat exchange channel, the second temperature sensor is used to detect the temperature of the fluorine pump inlet, the first pressure sensor is used to detect the inlet pressure of the fluorine pump inlet, and the second pressure sensor is used to detect the outlet pressure of the fluorine pump outlet.

2. The multi-connected type power heat pipe air conditioner according to claim 1, wherein: The outdoor unit further comprises a second condensing coil and a compressor, and the plate heat exchanger further comprises a second heat exchange channel, a first end of the second condensing coil is connected to an exhaust end of the compressor, and a second end of the second condensing coil is connected to an inlet of the second heat exchange channel, and a suction end of the compressor is connected to an outlet of the second heat exchange channel.

3. The multi-connected type power heat pipe air conditioner according to claim 1, wherein: The outdoor unit further comprises a gas pipe ball valve and a liquid pipe ball valve, the gas pipe ball valve is connected in series on the gas pipe branch, and the liquid pipe ball valve is connected in series on the liquid pipe branch.

4. A fluorine pump head establishment method applied to the multi-connected dynamic heat pipe air conditioner of any one of claims 2-3, characterized in that: The fluorine pump head establishment method comprises the following steps: Collecting the surface temperature of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel, the temperature of the fluorine pump inlet, the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet respectively when the fluorine pump assembly starts; Calculating the difference between the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet, recording the difference between the outlet pressure of the fluorine pump outlet and the inlet pressure of the fluorine pump inlet as the fluorine pump head, and calculating the difference between the temperature of the fluorine pump inlet and the surface temperature of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel, recording the difference between the temperature of the fluorine pump inlet and the surface of the pipeline between the input end of the liquid reservoir and the outlet of the first heat exchange channel as the suction intervention temperature; According to the fluorine pump head, the refrigerant at the outlet of the first heat exchange channel is selectively transferred to the inlet of the fluorine pump, and according to the suction intervention temperature, the refrigerant at the inlet of the fluorine pump is selectively transferred to the inlet of the first heat exchange channel.

5. The fluorine pump head establishment method of claim 4, wherein: The first electromagnetic valve is in a closed state in an initial state, and the refrigerant at the outlet of the first heat exchange channel is selectively transferred to the inlet of the fluorine pump according to the fluorine pump head, specifically including: If the fluorine pump head is less than a first preset threshold value within a first preset time, the first electromagnetic valve is opened to transfer the refrigerant at the outlet of the first heat exchange channel to the inlet of the fluorine pump; If the fluorine pump head is greater than a second preset threshold value within a second preset time after the first electromagnetic valve is opened, the first electromagnetic valve is closed to terminate the transfer of the refrigerant at the outlet of the first heat exchange channel to the inlet of the fluorine pump.

6. The fluorine pump head establishment method of claim 4, wherein: The second electromagnetic valve and the suction pump are both in a closed state in an initial state, and the refrigerant at the inlet of the fluorine pump is selectively transferred to the inlet of the first heat exchange channel according to the suction intervention temperature, specifically including: If the suction intervention temperature is greater than a third preset threshold value within a third preset time, the second electromagnetic valve and the suction pump are opened at the same time to transfer the refrigerant at the inlet of the fluorine pump to the inlet of the first heat exchange channel; If the suction intervention temperature is less than a fourth preset threshold value within a fourth preset time after the second electromagnetic valve and the suction pump are opened, or the fluorine pump head is greater than a fifth preset threshold value within a fifth preset time after the second electromagnetic valve and the suction pump are opened, the second electromagnetic valve and the suction pump are closed to terminate the transfer of the refrigerant at the inlet of the fluorine pump to the inlet of the first heat exchange channel.

7. The fluorine pump head establishment method of claim 6, wherein: According to the suction intervention temperature, the refrigerant at the inlet of the fluorine pump is selectively transferred to the inlet of the first heat exchange channel, further including: If the suction intervention temperature is greater than or equal to the fourth preset threshold value within the fifth preset time after the second electromagnetic valve and the suction pump are opened, or the fluorine pump head is less than or equal to the fifth preset threshold value within the fifth preset time after the second electromagnetic valve and the suction pump are opened, the second electromagnetic valve and the suction pump are closed for a sixth preset time, and then the second electromagnetic valve and the suction pump are opened until the second electromagnetic valve and the suction pump meet the closing condition.

8. A computer readable storage medium for storing a computer program, characterized in that: The program is executed by the processor to implement the fluorine pump head establishment method of any one of claims 4-7.

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