Condensing unit, air conditioner and control method

Abstract

The present invention provides a condensing unit, an air conditioner and a control method. The condensing unit includes a connecting pipeline for transporting refrigerant; a detection component, which is arranged on the connecting pipeline and is used to detect the thermal strain of the connecting pipeline; a cooling structure, which is used to transport refrigerant into the connecting pipeline; and a control module, which is connected to the detection component by signal and controls the cooling efficiency of the refrigerant in the connecting pipeline according to the thermal strain of the connecting pipeline to change the thermal strain of the connecting pipeline. The condensing unit of the present invention solves the problem that the condensing pipeline of the condensing unit is easy to break.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a condensing unit, an air conditioner and a control method. Background Art

[0002] Currently, during normal operation of a condensing unit, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor passes through the main and branch gas pipes before entering the condenser for cooling. Because the refrigerant is relatively hot before entering the condenser, and the branch gas pipes are thin and long, the branch gas pipes at the upper and lower ends of the condenser are most susceptible to thermal strain breakage in actual projects. This can lead to rapid refrigerant leakage, system alarms, and system shutdown, preventing further operation. This can severely impact the reliability of the condensing unit, particularly in condensing units with high-temperature branch gas pipe components.

[0003] The traditional solution is to replace the original gas distribution main pipe and gas distribution branch pipe with a liquid distributor and capillary tube. This method can effectively reduce the length of the gas distribution main pipe, thereby reducing the thermal strain of the capillary tube. However, for condensing units with high gas distribution pipe component temperatures, the capillary tube temperature is still high and the capillary tube will still break due to thermal strain. At this time, the use of liquid distributor and capillary tube cannot solve the problem of tube breakage caused by thermal strain.

[0004] In addition, existing technologies utilize thermal stress compensation devices, refrigeration units, methods for compensating thermal stress, and cold storage, providing a method for offsetting thermal strain by using opposite-direction tensile and compressive deformation, ultimately eliminating any overall thermal strain deformation. The thermal stress compensation device uses a motor or other device to drive a gear to rotate, which in turn drives the upper and lower racks to adjust the spacing between them, thereby achieving tensile and compressive forces at both ends. However, this method still has three major drawbacks.

[0005] First, the independent thermal stress compensation device, consisting of the gear, rack, motor, and controller, can only control thermal strain at one location on a branch pipe at a time. Condensing units have dozens or even hundreds of branch pipes, each with multiple locations. If every branch pipe breaks due to thermal strain from high-temperature refrigerant, multiple independent thermal stress compensation devices would be required, resulting in extremely high costs.

[0006] Second, the internal space of a general condensing unit is relatively small. According to the minimum size machinability of gears and racks in current actual projects, when multiple gas branch pipes are broken due to thermal stress deformation caused by high-temperature refrigerant, it is impossible to place multiple independent thermal stress compensation devices inside.

[0007] Third: The value of thermal strain is generally in the micron level. It is difficult to achieve micron-level displacement control in current practical engineering by relying solely on the single meshing transmission of gears and racks.

[0008] Therefore, the condensing unit in the prior art has the problem that the condensing pipeline is easily broken. Summary of the Invention

[0009] The purpose of the present invention is to overcome the above technical deficiencies and provide a condensing unit, an air conditioner and a control method to solve the problem of easy breakage of the condensing pipe in the condensing unit in the related art.

[0010] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: providing a condensing unit, comprising:

[0011] A condensing unit, the condensing unit including connecting pipes for transporting refrigerant;

[0012] A detection component is provided on the connecting pipeline, and is used to detect thermal strain of the connecting pipeline;

[0013] a cooling structure for conveying refrigerant into the connecting pipeline;

[0014] A control module is connected to the detection component by signal, and the control module controls the cooling efficiency of the refrigerant in the connecting pipeline according to the thermal strain of the connecting pipeline to change the thermal strain of the connecting pipeline.

[0015] Furthermore, the conveying cooling structure includes:

[0016] A condenser component, wherein the condenser component is provided with a refrigerant inlet pipe connected to the condensing unit and a refrigerant outlet pipe connected to the condensing unit;

[0017] A cooling component is connected to the condenser component to cool the refrigerant in the condenser component.

[0018] Furthermore, the cooling assembly includes:

[0019] a fluid reservoir for containing coolant;

[0020] a water inlet pipe component, the water inlet pipe component being connected to the condenser component to transport the coolant in the liquid storage box to the condenser component;

[0021] A water outlet pipe component is connected to the condenser component to transport the coolant in the condenser component to the liquid storage box.

[0022] Furthermore, the control module includes a water pump, which is arranged on the water inlet pipe component to control the flow rate of the coolant in the water inlet pipe component.

[0023] Furthermore, the condensing unit includes a finned condenser, the connecting pipeline is connected to the finned condenser, and the connecting pipeline is connected to the refrigerant outlet pipe.

[0024] Furthermore, the connecting pipeline includes:

[0025] a gas distribution main pipe connected to the refrigerant outlet pipe;

[0026] A plurality of gas branch pipes are connected to the gas branch main pipe at intervals, and one end of each gas branch pipe away from the gas branch main pipe is connected to a different part of the finned condenser; the detection component is arranged on the gas branch pipe.

[0027] Furthermore, the connecting pipeline includes a connecting pipe, one end of which is connected to the refrigerant outlet pipe, and the other end of which is connected to the gas distribution main pipe; the connecting pipe includes a first pipe section parallel to the gas distribution main pipe and a second pipe section perpendicular to the first pipe section.

[0028] Furthermore, the inner diameter of the refrigerant outlet pipe is larger than the inner diameter of the gas distribution main pipe; and the inner diameter of the gas distribution main pipe is larger than the inner diameter of the gas distribution branch pipe.

[0029] Furthermore, the condensing unit comprises:

[0030] chassis;

[0031] a compressor connected to the casing;

[0032] An electrical box, wherein the control module includes a controller provided on the electrical box;

[0033] A four-way valve is connected to the cooling structure.

[0034] An air conditioner includes a condensing unit, wherein the condensing unit is the above-mentioned condensing unit.

[0035] A control method is applicable to the above-mentioned condensing unit, and the control method includes:

[0036] detecting thermal strain of the connecting pipeline;

[0037] When the thermal strain is greater than a threshold value, increasing the cooling efficiency of the refrigerant in the connecting pipeline to reduce the thermal strain of the connecting pipeline;

[0038] When the value of the thermal strain is not greater than a threshold value, the cooling efficiency of the refrigerant in the connecting pipeline is reduced.

[0039] Furthermore, the control method includes:

[0040] A thermal stress gauge is installed on each gas branch pipe of the connecting pipeline to detect the thermal strain of each gas branch pipe;

[0041] When the thermal strain of at least one gas branch pipe is greater than the threshold, increasing the cooling efficiency of the refrigerant in the connecting pipeline to reduce the thermal strain of the connecting pipeline;

[0042] When the thermal strains of all the gas branch pipes are not greater than the threshold value, the refrigeration efficiency of the refrigerant in the connecting pipeline is reduced.

[0043] Furthermore,

[0044] The method of increasing the cooling efficiency of the refrigerant in the connecting pipeline includes increasing the power of the water pump to increase the refrigerant flow rate; and / or,

[0045] The method of reducing the cooling efficiency of the refrigerant in the connecting pipeline includes reducing the power of the water pump to reduce the flow rate of the refrigerant.

[0046] Beneficial effects:

[0047] The condensing unit of the present invention includes: a condensing unit, the condensing unit including a connecting pipeline for transporting refrigerant; a detection component, arranged on the connecting pipeline, the detection component is used to detect the thermal strain of the connecting pipeline; a cooling structure for transporting refrigerant into the connecting pipeline; a control module, the control module is connected to the detection component signal, the control module controls the cooling efficiency of the refrigerant in the connecting pipeline according to the thermal strain of the connecting pipeline to change the thermal strain of the connecting pipeline. The condensing unit of the present invention solves the problem that the condensing pipeline of the condensing unit is easy to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 1 is a schematic structural diagram of a condensing unit used in an embodiment of the present invention from one perspective;

[0049] Figure 2 is a structural schematic diagram of a condensing unit adopted in an embodiment of the present invention from another perspective;

[0050] Figure 3 yes Figure 2 A partially enlarged schematic diagram of part A used in an embodiment of the present invention;

[0051] Figure 4 is a structural diagram of a connection structure adopted in an embodiment of the present invention;

[0052] Figure 5 It is a block diagram of a control method provided by an embodiment of the present invention.

[0053] The above drawings include the following reference numerals:

[0054] 100. Condensing unit; 200. Cooling structure; 216. Detection components; 1. Refrigerant inlet pipe; 2. Finned condenser; 21. Gas distribution pipe assembly; 22. Liquid collecting pipe assembly; 3. Condenser components; 211. Refrigerant outlet pipe; 212. Connecting pipe; 213. Gas distribution main pipe; 214. Gas distribution branch pipe; 216. Detection components; 4. Casing; 5. Water inlet pipe component; 51. Water inlet pipe flange; 6. Bolt assembly; 7. Water pump; 8. Water outlet pipe component; 81. Water outlet pipe flange; 9. Liquid storage box; 10. Compressor; 11. Controller; 12. Four-way valve; 13. Electrical box. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0056] According to an embodiment of the present invention, a condensing unit is provided, comprising: a condensing unit 100, wherein the condensing unit 100 comprises a connecting pipeline for transporting a refrigerant; a detecting component 216, which is arranged on the connecting pipeline, and the detecting component 216 is used to detect the thermal strain of the connecting pipeline; a cooling structure 200, which is used to transport the refrigerant into the connecting pipeline; and a control module, wherein the control module is signal-connected to the detecting component 216, and the control module controls the cooling efficiency of the refrigerant in the connecting pipeline according to the thermal strain of the connecting pipeline to change the thermal strain of the connecting pipeline.

[0057] Specifically, the detection component 216 is a strain gauge (ie, a deformation sensor).

[0058] With the above-mentioned setting, strain gauges (i.e., deformation sensors) and control modules are used to detect and control the thermal strain on the gas branch pipe in real time. The safe thermal strain size of the gas branch pipe is set by directly adjusting the controller parameters. The cooling water flow is adjusted by using a water pump, a water inlet pipe, a water outlet pipe, and a water storage tank to achieve the cooling capacity adjustment of the shell and tube condenser, and then adjust the refrigerant temperature of the gas branch pipe. Ultimately, the thermal strain size of the gas branch pipe is controlled, solving the problem of easy breakage of the condensing pipe in the condensing unit.

[0059] In the condensing unit of this embodiment, see Figures 1 to 2The transport cooling structure 200 includes: a condenser component 3, on which a refrigerant inlet pipe 1 connected to the condensing unit 100 and a refrigerant outlet pipe 211 connected to the condensing unit 100 are provided; a cooling component, which is connected to the condenser component 3 to cool the refrigerant in the condenser component 3.

[0060] With the above arrangement, the refrigerant is first cooled by the condenser component 3 and then passed into the condensing unit through the refrigerant outlet pipe 211, thereby improving the heat exchange efficiency.

[0061] Specifically, the refrigerant inlet pipe 1 is a copper tube with an outer diameter of 22 mm and a wall thickness of 1.2 mm. It introduces the high-temperature, high-pressure gaseous refrigerant from the four-way valve 12 into the shell-and-tube condenser (i.e., condenser component 3). One end is connected to the copper tube on the four-way valve 12, and the other end is connected to the copper tube on the shell-and-tube condenser. The connection is brazed.

[0062] Specifically, the refrigerant outlet pipe 211 is a copper tube with an outer diameter of Φ16 and a wall thickness of 1 mm. The refrigerant cooled in the shell-and-tube condenser is introduced into the connecting pipe. One end is connected to the copper tube on the shell-and-tube condenser, and the other end is connected to one end of the connecting pipe. The connection is brazed.

[0063] Specifically, the shell and tube condenser is used to cool down the high-temperature, high-pressure gaseous refrigerant for the first time. It is fixed to the condensing unit casing 4 by bolt assembly A.

[0064] See also Figures 1 to 2 In the condensing unit of this embodiment, the cooling assembly includes: a liquid storage box 9 for containing coolant; a water inlet pipe component 5, which is connected to the condenser component 3 to transport the coolant in the liquid storage box 9 to the condenser component 3; and a water outlet pipe component 8, which is connected to the condenser component 3 to transport the coolant in the condenser component 3 to the liquid storage box 9.

[0065] In this way, by passing the coolant into the condenser component 3, the heat of the refrigerant inside the condenser component 3 is taken away.

[0066] Specifically, the water inlet pipe component 5 is used to supply cooling water to the shell and tube condenser (i.e., the condenser component 3). One end is fixed to the shell and tube flange through the water inlet pipe flange 51 and the bolt assembly 6, and the other end is placed in the cooling water.

[0067] Specifically, the water outlet pipe component 8 leads the cooled water in the shell and tube condenser to the liquid storage box 9. One end is fixed to the shell and tube condenser through the water outlet pipe flange 81 and the bolt assembly B, and the other end is placed in the cooling water.

[0068] In the condensing unit of this embodiment, see Figures 1 to 2The control module includes a water pump 7 , which is arranged on the water inlet pipe component 5 to control the flow rate of the coolant in the water inlet pipe component 5 .

[0069] Specifically, the water pump 7 is used to drive the cooling water circulation. The interfaces at both ends are welded to the water inlet pipe.

[0070] In the condensing unit of this embodiment, see Figures 1 to 2 The condensing unit 100 includes a finned condenser 2 , the connecting pipe is connected to the finned condenser 2 , and the connecting pipe is connected to the refrigerant outlet pipe 211 .

[0071] Specifically, the finned condenser 2 cools the refrigerant for the second time by air cooling and is fixed to the condensing unit casing by screws.

[0072] In the condensing unit of this embodiment, see Figures 3 and 4 The connecting pipeline includes: a main gas distribution pipe 213, which is connected to the refrigerant outlet pipe 211; a plurality of branch gas distribution pipes 214, which are connected to the main gas distribution pipe 213 at intervals, and each branch gas distribution pipe 214 is connected to a different part of the finned condenser 2 at one end away from the main gas distribution pipe 213; and the detection component 216 is disposed on the branch gas distribution pipe 214. This improves the heat dissipation efficiency of the structure and effectively detects thermal strain at the location where the connecting pipeline is most susceptible to deformation.

[0073] Specifically, in condensing units, the temperature is highest between the compressor outlet and the condenser inlet, approximately 100-120°C. After dissipating heat through the condenser, the refrigerant temperature begins to drop again. This section of piping often has the smallest and thinnest gas branch pipes, making it most susceptible to thermal strain and pipe breakage. Therefore, installing a sensor here makes it easier to detect whether the entire unit is experiencing excessive thermal strain.

[0074] Specifically, the gas distribution pipe assembly 21 introduces the refrigerant cooled in the shell and tube condenser into the finned condenser 2. One end is connected to the copper tube on the shell and tube condenser, and the other end is connected to the inlet pipe port on the finned condenser 2, and the connection is brazed.

[0075] Specifically, the main gas distribution pipe 213 is a copper pipe with an outer diameter of Φ12 and a wall thickness of 1 mm. It distributes the refrigerant to multiple gas distribution branches. One end is connected to one end of the connecting pipe 212, and the branch end is connected to the gas distribution branch pipe. The connection is brazed.

[0076] Specifically, the gas branch pipe 214 is a copper tube with an outer diameter of Φ7 and a wall thickness of 0.7 mm. It introduces the refrigerant from the gas branch main pipe 213 into the finned condenser 2. One end of the pipe is connected to the gas branch main pipe 213, and the other end is connected to the inlet port on the finned condenser 2. The connection is brazed.

[0077] Specifically, the detection component 216 is a deformation displacement sensor, which is attached to the gas branch pipe and is used to detect the thermal strain of the gas branch pipe when it is working.

[0078] In the condensing unit of this embodiment, see Figures 3 and 4 The connecting pipeline includes a connecting pipe 212, one end of which is connected to the refrigerant outlet pipe 211, and the other end of the connecting pipe 212 is connected to the gas distribution main pipe 213; the connecting pipe 212 includes a first pipe section parallel to the gas distribution main pipe 213 and a second pipe section perpendicular to the first pipe section.

[0079] Specifically, the connecting pipe 212 is a copper pipe with an outer diameter of Φ12 and a wall thickness of 1 mm. It serves as a connection transition. One end is connected to the refrigerant outlet pipe 211, and the other end is connected to the gas distribution main pipe. The connection is brazed.

[0080] See also Figures 3 and 4 In this embodiment of the condensing unit, the inner diameter of the refrigerant outlet pipe 211 is larger than that of the main gas distribution pipe 213; the inner diameter of the main gas distribution pipe 213 is larger than that of the branch gas distribution pipe 214. Thus, thin-walled or small copper pipes are susceptible to significant thermal deformation and fracture under the same refrigerant pressure and temperature, while thicker copper pipes are less susceptible to thermal deformation and fracture. By controlling the inner diameter of each pipe according to the temperature distribution, the structural strength is effectively ensured.

[0081] Specifically, the liquid collecting pipe assembly 22 collects the refrigerant cooled in the finned condenser 2. The branch pipe ends are connected to the inlet and outlet pipe ports on the finned condenser 2, and the connections are brazed.

[0082] See also Figures 1 to 2 In the condensing unit of this embodiment, the condensing unit 100 includes: a casing 4; a compressor 10, connected to the casing 4; an electrical box 13, the control module includes a controller 11 provided on the electrical box 13; a four-way valve 12, the four-way valve 12 is connected to the cooling structure 200.

[0083] Specifically, the compressor 10 is used to drive the refrigerant to circulate in the refrigeration system and is fixed to the condensing unit casing with bolts.

[0084] Specifically, the four-way valve 12 plays a connecting transition role, one end of which is connected to the copper pipe on the oil separator, and the other end is connected to the air intake copper pipe, and the connection is brazed.

[0085] Specifically, the electrical box 13 is used to fix electrical components and is fixed to the casing 4 of the condensing unit by screws.

[0086] Specifically, the controller 11 is fixed to the electrical box 13 by screws. The maximum value of the thermal strain of all the detection components 216 is calculated, and a control signal is sent to the water pump 7 to control the speed of the water pump 7 to adjust the cooling water flow.

[0087] The air conditioner of this embodiment includes a condensing unit, and the condensing unit is the condensing unit mentioned above.

[0088] The control method of this embodiment is shown in Figure 5 , applicable to the above-mentioned condensing unit, the control method includes: detecting the thermal strain of the connecting pipeline; when the thermal strain is greater than a threshold value, increasing the refrigeration efficiency of the refrigerant in the connecting pipeline to reduce the thermal strain of the connecting pipeline; when the value of the thermal strain is not greater than the threshold value, reducing the refrigeration efficiency of the refrigerant in the connecting pipeline.

[0089] Using this method, high-temperature, high-pressure gaseous refrigerant is first introduced into a small shell-and-tube condenser through a thick copper inlet tube for initial cooling. It is then introduced through a thick copper exhaust tube to the main and branch gas pipes. The refrigerant temperature in the branch gas pipes is adjusted by increasing or decreasing the cooling water flow in the shell-and-tube condenser, ensuring that the branch gas pipes no longer experience thermal strain due to high temperatures, which could lead to pipe breakage. This ultimately solves the problem of thermal strain and pipe breakage in condensing units.

[0090] In the control method of this embodiment, see Figure 5 The control method includes: providing a thermal strain gauge on each gas branch pipe 214 of the connecting pipeline to detect the thermal strain of each gas branch pipe 214; when the thermal strain of at least one gas branch pipe 214 is greater than the threshold value, increasing the cooling efficiency of the refrigerant in the connecting pipeline to reduce the thermal strain of the connecting pipeline; when the thermal strain of all gas branch pipes 214 is not greater than the threshold value, reducing the cooling efficiency of the refrigerant in the connecting pipeline.

[0091] With this arrangement, when the heat exchange efficiency is low, the thermal strain detected by heat exchange efficiency detection component 216 is reduced, thereby preventing condensing unit tube breakage caused by thermal strain. When the heat exchange efficiency is high, the heat exchange efficiency is reduced, and the thermal strain detected by detection component 216 is increased, thereby preventing high energy consumption caused by the high speed rotation of water pump 7.

[0092] See also Figure 5 In the control method of this embodiment, the method for increasing the cooling efficiency of the refrigerant in the connecting pipeline includes increasing the power of water pump 7 to increase the refrigerant flow rate; and / or the method for decreasing the cooling efficiency of the refrigerant in the connecting pipeline includes decreasing the power of water pump 7 to decrease the refrigerant flow rate. In this way, by controlling the refrigerant flow rate, the purpose of adjusting the cooling efficiency can be conveniently and effectively achieved. DETAILED DESCRIPTION

[0094] During normal operation, the condensing unit and the water pump 7 are turned on, and the high-temperature, high-pressure gaseous refrigerant discharged by the compressor 10 is first introduced into the small shell and tube condenser through the thick refrigerant inlet pipe 1 for the first cooling and cooling, and then introduced into the gas distribution main pipe 213 and the gas distribution branch pipe 214 through the thick refrigerant outlet pipe 211, and finally enters the finned condenser 2 for the second cooling and cooling.

[0095] The detection component 216 detects the thermal strain of each gas branch pipe 214 in real time, and the controller 11 controls the speed of the water pump 7 in real time, and controls the refrigerant temperature in the gas branch pipe 214 by adjusting the cooling water flow of the shell and tube condenser in real time to ensure that the maximum thermal strain of each gas branch pipe 214 does not exceed the safe thermal strain size A0.

[0096] Setting safety thermal strain A0: When the condensing unit is working, set the safety thermal strain A0 on the controller 11. The parameter setting should be based on the actual copper pipe breaking under thermal strain.

[0097] Detect thermal strain A1, A2, ..., A n : The detection component 216 detects the thermal strains A1, A2, ..., A on each gas branch pipe 214 in real time. n And transmit it to the controller 11 in real time, and the controller 11 calculates the maximum value A in real time max And compare A0, A max size.

[0098] If A max ≤A0, the detection components 216 at each location continue to detect, and the controller 11 issues a command to reduce the speed of the water pump 7;

[0099] If A max >A0, the detection components 216 at various locations continue to detect, and the controller 11 issues a command to increase the speed of the water pump 7.

[0100] Stable control of thermal strain of gas distribution pipe 214:

[0101] When the heat exchange efficiency is low, the speed of the water pump 7 is increased, the cooling water flow rate is increased, the cooling capacity of the shell and tube condenser is increased, the temperature of the refrigerant entering the gas branch pipe 214 is reduced, the temperature of each gas branch pipe 214 is reduced, the thermal strain of each gas branch pipe 214 is reduced, and the thermal strain detected by the detection component 216 is reduced, thereby avoiding the problem of pipe breakage caused by thermal strain of the condensing unit.

[0102] When the heat exchange efficiency is high, the rotation speed of the water pump 7 is reduced, the cooling water flow rate is reduced, the cooling capacity of the shell and tube condenser is reduced, the temperature of the refrigerant entering the gas branch pipe 214 increases, the temperature of each gas branch pipe 214 increases, the thermal strain of each gas branch pipe 214 increases, and the thermal strain detected by the detection component 216 increases, but will not exceed the safety thermal strain A0, thereby avoiding the problem of high energy consumption caused by the high-speed rotation of the water pump 7.

[0103] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0104] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0105] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0106] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0107] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A condensing unit, characterized in that: include: A condensing unit (100), the condensing unit (100) comprising a connecting pipeline for transporting a refrigerant; A detection component (216) is provided on the connecting pipeline, and the detection component (216) is used to detect thermal strain of the connecting pipeline; A cooling structure (200) is used to transport refrigerant into the connecting pipeline; A control module, the control module being connected to the detection component (216) by signal, the control module controlling the cooling efficiency of the refrigerant in the connecting pipeline according to the thermal strain of the connecting pipeline to change the thermal strain of the connecting pipeline; The cooling structure (200) comprises: a condenser component (3), the condenser component (3) being provided with a refrigerant inlet pipe (1) connected to the condensing unit (100) and a refrigerant outlet pipe (211) connected to the condensing unit (100); a cooling assembly, the cooling assembly being connected to the condenser component (3) to cool the refrigerant in the condenser component (3); A finned condenser (2), wherein the refrigerant cooled in the condenser component (3) is introduced into the finned condenser (2); The connecting pipeline includes: a gas distribution main pipe (213), the gas distribution main pipe (213) is connected to the refrigerant outlet pipe (211); a plurality of gas distribution branch pipes (214), the plurality of gas distribution branch pipes (214) are connected to the gas distribution main pipe (213) at intervals, and one end of each gas distribution branch pipe (214) away from the gas distribution main pipe (213) is connected to a different part of the fin-type condenser (2); the detection component (216) is arranged on the gas distribution branch pipe (214); and the refrigerant temperature of the gas distribution branch pipe (214) is increased or decreased by increasing or decreasing the cooling water flow of the condenser component (3).

2. The condensing unit according to claim 1, characterized in that The cooling assembly comprises: A liquid storage box (9) for containing coolant; a water inlet pipe component (5), the water inlet pipe component (5) being connected to the condenser component (3) to transport the coolant in the liquid storage box (9) to the condenser component (3); A water outlet pipe component (8), the water outlet pipe component (8) is connected to the condenser component (3) to transport the coolant in the condenser component (3) to the liquid storage box (9).

3. The condensing unit according to claim 2, characterized in that The control module comprises a water pump (7), and the water pump (7) is arranged on the water inlet pipe component (5) to control the flow rate of the coolant in the water inlet pipe component (5).

4. The condensing unit according to claim 1, wherein: The connecting pipeline is connected to the finned condenser (2), and the connecting pipeline is connected to the refrigerant outlet pipe (211).

5. The condensing unit according to claim 4, characterized in that: The connecting pipeline includes a connecting pipe (212), one end of the connecting pipe (212) is connected to the refrigerant outlet pipe (211), and the other end of the connecting pipe (212) is connected to the gas distribution main pipe (213); the connecting pipe (212) includes a first pipe section parallel to the gas distribution main pipe (213) and a second pipe section perpendicular to the first pipe section.

6. The condensing unit according to claim 4, characterized in that The inner diameter of the refrigerant outlet pipe (211) is larger than the inner diameter of the gas distribution main pipe (213); and the inner diameter of the gas distribution main pipe (213) is larger than the inner diameter of the gas distribution branch pipe (214).

7. The condensing unit according to claim 1, characterized in that The condensing unit (100) comprises: Housing (4); A compressor (10) connected to the casing (4); An electrical box (13), wherein the control module comprises a controller (11) provided on the electrical box (13); A four-way valve (12), the four-way valve (12) being connected to the cooling structure (200).

8. An air conditioner comprising a condensing unit, characterized in that: The condensing unit is the condensing unit according to any one of claims 1 to 7.

9. A control method, applicable to the condensing unit according to any one of claims 1 to 7, characterized in that: The control method includes: detecting thermal strain of the connecting pipeline; When the thermal strain is greater than a threshold value, increasing the cooling efficiency of the refrigerant in the connecting pipeline to reduce the thermal strain of the connecting pipeline; When the value of the thermal strain is not greater than a threshold value, the cooling efficiency of the refrigerant in the connecting pipeline is reduced.

10. The control method according to claim 9, characterized in that: The control method includes: A thermal strain gauge is provided on each gas branch pipe (214) of the connecting pipeline to detect the thermal strain of each gas branch pipe (214); When the thermal strain of at least one gas branch pipe (214) is greater than the threshold, increasing the refrigeration efficiency of the refrigerant in the connecting pipeline to reduce the thermal strain of the connecting pipeline; When the thermal strain of all the gas branch pipes (214) is not greater than the threshold value, the refrigeration efficiency of the refrigerant in the connecting pipeline is reduced.

11. The control method according to claim 9, characterized in that: The method of increasing the refrigeration efficiency of the refrigerant in the connecting pipeline includes increasing the power of the water pump (7) to increase the refrigerant flow rate; and / or, The method for reducing the refrigeration efficiency of the refrigerant in the connecting pipeline includes reducing the power of the water pump (7) to reduce the flow rate of the refrigerant.

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