Control method of spraying device, spraying device and heat exchange unit

Abstract

The invention relates to the technical field of heat exchange cooling, in particular to a control method of a spraying device, the spraying device and a heat exchanger unit, and the control method of the spraying device comprises the steps that the moving speed of a spray head of the spraying device is obtained based on the environment temperature outside a heat exchanger and the relative air volume distribution of the heat exchanger; and the nozzle is controlled to perform movable spraying on the heat exchanger at the moving speed in the set direction. The spraying device can adapt to different nozzle moving speeds for different types of heat exchangers in different environments, selection of the moving speeds is more scientific and reasonable, the spraying cooling effect is improved under the application of the same water amount, the working energy efficiency of the heat exchangers at different environment temperatures is improved, and the service life of the heat exchangers is prolonged. And the spraying device can be adaptive to more scenes and more heat exchanger types.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese patent application No. 2024113250047, filed on September 23, 2024, entitled “Control method of spray device, spray device and heat exchanger unit”, which is incorporated herein by reference in its entirety. Technical Field

[0002] The present invention relates to the technical field of heat exchange cooling, and in particular to a control method of a spray device, a spray device and a heat exchange unit. Background Art

[0003] In the summer, when the air conditioner is used as a condenser in a high temperature and high humidity environment, the temperature difference between the refrigerant inside and the outdoor environment is small, and the heat exchange efficiency of the condenser is seriously reduced, thereby reducing the energy efficiency of the entire machine. Use a spray device to spray water on the condenser. The spray water evaporates on the heat exchanger and takes away the heat of the heat exchanger, which can reduce the compressor power and improve the energy efficiency of the entire machine.

[0004] The existing spraying device is to fix the spraying pipe above the shell of the heat exchanger, and spray water onto the heat exchanger at a fixed position and angle. Under the action of gravity, the water spreads all over the heat exchanger from top to bottom. In this way, the water flow rate decreases from top to bottom, which is difficult to adapt to various types of heat exchangers, and it is easy to have too much water or no spray water on the lower heat exchanger. Summary of the invention

[0005] The present invention provides a control method for a spray device, a spray device and a heat exchanger unit, which are used to solve one of the defects in the prior art. The spray device can adapt to different nozzle movement speeds for heat exchangers of different models in different environments. The selection of the movement speed is more scientific and reasonable, and the spray cooling effect is improved under the application of the same water volume, and the working energy efficiency of the heat exchanger at different ambient temperatures is improved. The spray device can also be adapted to more scenarios and more heat exchanger models.

[0006] The present invention provides a control method for a spray device, comprising: Based on the ambient temperature outside the heat exchanger and the relative air volume distribution of the heat exchanger, a moving speed of the nozzle of the spray device is obtained; The spray head is controlled to move and spray the heat exchanger along a set direction at the moving speed.

[0007] According to a control method for a spray device provided by the present invention, obtaining the moving speed of the spray head of the spray device based on the ambient temperature outside the heat exchanger and the relative air volume distribution of the heat exchanger includes: Based on the total air volume of the heat exchanger and the set air volume distribution of the heat exchanger, obtain the relative air volume distribution at each position of the heat exchanger along the set direction, where the set air volume distribution is the air volume at each position of the heat exchanger along the set direction; Based on the ambient temperature outside the heat exchanger and the relative air volume distribution at each position of the heat exchanger along the set direction, obtain the moving speed of the nozzle.

[0008] According to a control method of a spraying device provided by the present invention, the relative air volume distribution at each position of the heat exchanger along the set direction is the ratio of the set air volume distribution of the heat exchanger to the total air volume of the heat exchanger.

[0009] According to a control method of a spraying device provided by the present invention, it further includes: Control the heat exchanger to continuously operate for a first set time period; Determine that the ambient temperature outside the heat exchanger is greater than a first set ambient temperature and the exhaust temperature of the compressor is greater than a first set exhaust temperature, and supply water to the nozzle; Determine that water supply to the nozzle lasts for a second set time period, and control the nozzle to move and spray the heat exchanger along the set direction at the moving speed.

[0010] According to a control method of a spraying device provided by the present invention, it further includes: Control the nozzle to move and spray the heat exchanger along the set direction at the moving speed for a third set time period; Determine that the ambient temperature outside the heat exchanger is less than or equal to a second set ambient temperature, or the exhaust temperature of the compressor is less than or equal to a second set exhaust temperature, stop supplying water to the nozzle, and control the nozzle to move to the initial position; or, determine that the ambient temperature outside the heat exchanger is greater than the second set ambient temperature and the exhaust temperature of the compressor is greater than the second set exhaust temperature, and continue to control the nozzle to move and spray the heat exchanger along the set direction at the moving speed for a third set time period.

[0011] According to a control method of a spraying device provided by the present invention, the first set ambient temperature is greater than or equal to the second set ambient temperature, and the first set exhaust temperature is greater than or equal to the second set exhaust temperature.

[0012] According to a control method of a spraying device provided by the present invention, the third set time period is at least one reciprocating movement cycle of at least one nozzle spraying the heat exchanger along the set direction.

[0013] According to a control method of a spraying device provided by the present invention, the moving speed of the nozzle is less than or equal to 0.2 m / s.

[0014] The present invention also provides a spraying device, comprising: A spraying assembly, the spraying assembly comprising a spray pipe, a spray head and a water supply component, the extending direction of the spray pipe forming a set angle with a set direction, at least one spray head being provided on the spray pipe, and the water supply component being communicated with the spray pipe; A driving assembly, the driving assembly comprising a driver, a transmission component and a guiding component, the spray pipe being connected to the transmission component, the driver being connected to the transmission component to drive the transmission component to drive the spray pipe to move along the set direction, the guiding component extending along the set direction and being slidably connected to the spray pipe; A control device, the control device being electrically connected to the driver and the water supply component and being adapted to execute the control method of the spraying device as described above.

[0015] The present invention also provides a heat exchange unit, comprising: At least one heat exchanger; The spraying device as described above, the spray pipe being arranged outside the heat exchanger, and the extending direction of the spray pipe being perpendicular to the width direction of the heat exchanger, and the set direction being along the height direction or the length direction of the heat exchanger.

[0016] The control method of the spraying device provided by the present invention, obtaining the ambient temperature outside the heat exchanger T e and the relative air volume distribution of the heat exchanger f ( z ), according to the real-time ambient temperature outside the heat exchanger T e and the relative air volume distribution of the heat exchanger f ( z ), obtaining the moving speed of the spray head v , after the spraying device is started, the spray head can be controlled to perform moving spraying on the heat exchanger along the set direction at the moving speed v . The relative air volume distribution of the heat exchanger f ( z ) refers to the air intake volume or the air outlet volume at different positions of the heat exchanger, and can also be understood as the air intake speed and the air outlet speed. Through the ambient temperature T e and the relative air volume distribution of the heat exchanger f ( z ), the moving speed v of the spray head determined can enable the spraying device to adapt different moving speeds of the spray head to heat exchangers of different models in different environments v , the selection of the moving speed v is more scientific and reasonable, improving the spray cooling effect under the application of the same amount of water, enhancing the working energy efficiency of the heat exchanger at different ambient temperatures, and enabling the spraying device to adapt to more scenarios and more heat exchanger models. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is one of the structural schematic diagrams of the heat exchange unit provided by the embodiments of the present invention; Figure 2 is another structural schematic diagram of the heat exchange unit provided by the embodiments of the present invention; Figure 3 is the schematic flowchart of the control method of the spraying device provided by the embodiments of the present invention; Figure 4 is the third structural schematic diagram of the heat exchange unit provided by the embodiments of the present invention; Figure 5 is the fourth structural schematic diagram of the heat exchange unit provided by the embodiments of the present invention; Figure 6 is the structural schematic diagram of the electronic device provided by the embodiments of the present invention.

[0019] Reference numerals: 100, spraying assembly; 110, spray pipe; 120, nozzle; 130, water pipe joint; 140, water pipe; 150, valve box; 200, driving assembly; 210, driver; 220, transmission component; 230, guiding component 300, drag chain; 400, heat exchanger; 500, spraying device. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0021] Such as Figure 1 , Figure 2 and Figure 4As shown in the figure, an embodiment of the present invention provides a spraying device 500, which includes a spraying component 100, a driving component 200 and a control device. The spraying component 100 includes a spray pipe 110, a spray head 120 and a water supply component. The extending direction of the spray pipe 110 forms a set angle with the set direction. At least one spray head 120 is provided on the spray pipe 110, and the water supply component is communicated with the spray pipe 110. The driving component 200 includes a driver 210, a transmission component 220 and a guiding component. The spray pipe 110 is connected to the transmission component 220, and the driver 210 is connected to the transmission component 220 to drive the transmission component 220 to drive the spray pipe 110 to move along the set direction. The guiding component extends along the set direction and is slidably connected to the spray pipe 110. The control device is electrically connected to the driver 210 and the water supply component, and is adapted to execute the control method of the spraying device 500 provided by the embodiment of the present invention.

[0022] In the spraying device 500 of the embodiment of the present invention, the spraying component 100 is mainly composed of a spray pipe 110, a spray head 120 and a water supply component. The water supply component includes a water pipe joint 130, a water pipe 140 and a valve box 150. A filter and a solenoid valve are provided in the valve box 150. The water pipe joint 130 communicates the water pipe 140 with the spray pipe 110. Both the filter and the solenoid valve are connected to the water pipe 140. The filter provides a filtering function for the water supply of the water pipe 140, and the opening and closing of the solenoid valve can control the start and stop of the water supply of the water pipe 140. The spray head 120 is arranged on the spray pipe 110. Water is supplied from the water pipe 140 to the spray pipe 110 and then sprayed out by the spray head 120 to complete the spraying work. When there are multiple spray heads 120, the multiple spray heads 120 are arranged in sequence along the axial direction of the spray pipe 110, and the spraying directions are kept consistent. The water pipe 140 is installed in a drag chain 300, and the valve box 150 is connected to the water pipe joint through the drag chain 300.

[0023] The driving component 200 is mainly composed of a driver 210, a transmission component 220 and a guiding component. The driver 210 can be a motor, the transmission component 220 can be a synchronous pulley and a synchronous belt, and the guiding component can be a guide rail. The synchronous pulley and the synchronous belt are arranged in cooperation along the set direction. The spray pipe 110 is connected to the synchronous belt, and the extending direction of the spray pipe 110 forms a set angle with the extending direction of the synchronous belt. Thus, when the motor drives the synchronous pulley to drive the synchronous belt to rotate, when the spray pipe 110 moves along the set direction, the positions passed by the spray pipe 110 can form a spraying surface. The spray pipe 110 is slidably connected to the guide rail. During the movement of the spray pipe 110, the guide rail can guide and stabilize the spray pipe 110 to ensure the spraying effect.

[0024] When the control device controls the spray device 500 to start spraying, the solenoid valve opens. The water source first passes through the filter in the valve box 150, then through the solenoid valve, enters the water pipe 140 through the solenoid valve outlet, and then enters the spray pipe 110 through the water pipe joint 130. The water in the spray pipe 110 is sprayed onto the heat exchanger 400 from the nozzle 120. When it is necessary to change the spraying position, the control device controls the motor to drive the synchronous belt, and then drives the spray pipe 110 to move to the required position.

[0025] When the control device controls the spray device 500 to stop spraying, the solenoid valve closes and the spray pipe 110 resets. When winter comes, the water pipe 140 needs to be disconnected from the water pipe joint 130, and the water in the water pipe 140 and the spray pipe 110 is drained to prevent the pipeline from being frozen.

[0026] In other embodiments, the transmission component 220 can also be a transmission structure of a lead screw and nut, as long as it can stably drive the linear movement of the spray assembly 100.

[0027] An embodiment of the present invention provides a heat exchange unit, including at least one heat exchanger 400 and the spray device 500 as described in the above embodiment. The spray pipe 110 is arranged outside the heat exchanger 400, and the extending direction of the spray pipe 110 is perpendicular to the width direction of the heat exchanger 400. The set direction is along the height direction or the length direction of the heat exchanger 400.

[0028] In the heat exchange unit of the embodiment of the present invention, a spray device 500 is installed beside the heat exchanger 400. The heat exchanger 400 itself has three directions of length, width and height. The extending direction of the spray pipe 110 of the spray device 500 is perpendicular to the width direction of the heat exchanger 400. The extending directions of the synchronous belt and the guide rail of the spray device 500 are the same, and both extend along the set direction. The set direction can be the height direction or the length direction of the heat exchanger 400, that is, the spray pipe 110 forms a parallel spray surface on the surface formed by the height and length directions of the heat exchanger 400. When the set direction is the height direction, the driving component 200 can drive the spray pipe 110 to move up and down. When the set direction is the length direction, the driving component 200 can drive the spray pipe 110 to move left and right.

[0029] In this embodiment, the heat exchanger 400 is an outdoor unit of an air conditioner. In the high temperature and high humidity environment in summer, the outdoor unit of the air conditioner is used as a condenser. The temperature difference between the refrigerant inside and the outdoor environment is small, and the heat exchange efficiency of the condenser is seriously reduced, thereby reducing the energy efficiency of the whole machine. The spray device 500 is used to spray water on the condenser. The spray water evaporates on the heat exchanger 400 and takes away the heat of the heat exchanger 400, which can reduce the compressor power and improve the energy efficiency of the whole machine. The present invention sets the nozzle 110 of the spray device 500 on the surface composed of the height and length direction of the heat exchanger 400, that is, the front air inlet position of the heat exchanger 400, that is, the range of the spray surface covers the entire air inlet surface of the heat exchanger 400, and the nozzle 120 sprays on the air inlet surface. The spray range is large, and the wind entering the heat exchanger 400 can be cooled while cooling the heat exchanger 400.

[0030] Moreover, when the nozzle 110 moves to form a spraying surface, it can ensure that the spray water evenly covers the air inlet surface. Compared with many existing spray devices 500 that fix the spray pipe above the machine housing and spray water onto the heat exchanger 400 at a fixed position and angle, the present invention avoids the problem that water, under the action of gravity, covers the heat exchanger 400 from top to bottom, resulting in a decreasing trend in water flow from top to bottom, excessive water consumption and the lower heat exchanger 400 cannot be effectively sprayed. Moreover, the spraying position and range can be adjusted to adapt to different models and different environments.

[0031] like Figure 3 As shown, the control method of the spray device 500 provided in the embodiment of the present invention includes: Based on the ambient temperature outside the heat exchanger 400 T e and the relative air volume distribution of the heat exchanger 400 f ( z ), obtain the moving speed of the nozzle 120 of the spray device 500 v ; Control the nozzle 120 to move along the set direction at a speed v The heat exchanger 400 is subjected to mobile spraying.

[0032] The control method of the spray device 500 of the embodiment of the present invention obtains the ambient temperature outside the heat exchanger 400 T e and the relative air volume distribution of the heat exchanger 400 f ( z ), according to the real-time ambient temperature outside the heat exchanger 400 T e and the relative air volume distribution of the heat exchanger 400 f ( z ), obtain the moving speed of the nozzle 120 v After the spray device 500 is started, the spray head 120 can be controlled to move along the set direction at a speed of vPerform a mobile spray on the heat exchanger 400. The relative air volume distribution of the heat exchanger 400 f ( z ) refers to the air intake volume or air outlet volume at different positions of the heat exchanger 400, and can also be understood as the air intake speed and air outlet speed. Through the ambient temperature T e and the relative air volume distribution of the heat exchanger 400 f ( z ) to determine the moving speed v of the nozzle 120, which enables the spraying device 500 to adapt different moving speeds of the nozzle 120 for heat exchangers 400 of different models in different environments v , and the selection of the moving speed v is more scientific and reasonable, improving the spray cooling effect under the application of the same amount of water, enhancing the working energy efficiency of the heat exchanger 400 at different ambient temperatures, and enabling the spraying device 500 to adapt to more scenarios and more heat exchanger 400 models.

[0033] In this embodiment, the controller of the spraying device 500 executes this control method and is applied to a single-compressor system. When it is determined to use spraying during the refrigeration season, spraying can be performed according to the control method of the spraying device 500. The ambient temperature outside the heat exchanger 400 can be obtained through a temperature sensor, and the temperature sensor can be set near the air intake surface of the heat exchanger 400.

[0034] According to an embodiment provided by the present invention, based on the ambient temperature T e outside the heat exchanger 400 and the relative air volume distribution f ( z ) of the heat exchanger 400, to obtain the moving speed v of the nozzle 120 of the spraying device 500 includes: Based on the total air volume B of the heat exchanger 400 and the set air volume distribution B ( z ) of the heat exchanger 400, to obtain the relative air volume distribution f ( z ) at each position along the set direction of the heat exchanger 400, and the set air volume distribution B ( z ) is the air volume at each position along the set direction of the heat exchanger 400; Based on the ambient temperature T e outside the heat exchanger 400 and the relative air volume distribution f ( z ) at each position along the set direction of the heat exchanger 400, to obtain the moving speed v of the nozzle 120.

[0035] In this embodiment, the total air volume B of the heat exchanger 400 refers to the air intake volume or the air outlet volume of the entire heat exchanger 400, and can also be understood as the overall air intake speed and air outlet speed. The air volume at each position of the heat exchanger 400 along the set direction is a specific parameter of the heat exchanger 400 itself, which has been determined during the research and development and manufacturing of the heat exchanger 400, that is, determined according to the setting degree of the heat exchange tubes and the like inside the heat exchanger 400 at different positions. The set air volume distribution of the heat exchanger 400 B ( z ) can be a functional relationship related to the displacement of the nozzle 120 along the set direction z or a mapping relationship related to the displacement of the nozzle 120 along the set direction z .

[0036] Through the set air volume distribution of the heat exchanger 400 B ( z ) and the total air volume B of the heat exchanger 400, the relative air volume distribution at each position of the heat exchanger 400 along the set direction can be determined f ( z ), that is, the relative air volume distribution f ( z ) is related to the relative distribution of the air volume along the set direction.

[0037] According to an embodiment provided by the present invention, the relative air volume distribution at each position of the heat exchanger 400 along the set direction f ( z ) is the ratio of the set air volume distribution of the heat exchanger 400 B ( z ) to the total air volume B of the heat exchanger 400.

[0038] In this embodiment, the relative air volume distribution of the heat exchanger 400 at each position in the set direction f ( z ) = B ( z ) / B. And the air volume distribution is a value determined during the design stage of the heat exchanger 400, that is, for different heat exchangers 400, there is a determined relative air volume distribution f ( z ).

[0039] The moving speed of the nozzle 120 v is a function of the displacement of the nozzle 120 along the set direction z and the ambient temperature T e, that is, related to the relative distribution of the air volume along the set direction and the ambient temperature T e. Therefore, the moving speed of the nozzle 120 v ( T e, z ) = a T e + bf ( z ) + c, where a, b, and c can be determined through experiments. During the experiment, for a determined model, the relative air volume distribution f ( z ) is known. For different ambient temperatures T e or different ambient temperature ranges, aiming at the air conditioner to reach a certain determined value of energy efficiency, by modifying the parameters a, b, and c, the spray head 120 is adjusted to spray at different moving speeds, and at the same time, the energy efficiency of the heat exchanger 400 can be directly detected. The energy efficiency is the ratio of the output power to the input power, which can reflect whether the sprayed water has the maximum utilization rate. Only the moving speed of the spray head 120 closest to the target energy efficiency is retained, and the a, b, and c under different ambient temperatures T e or different ambient temperature ranges can be obtained.

[0040] The above method for determining the parameters of a, b, and c is carried out on the premise that the total flow rate of the sprayed water and the total air volume B satisfy a determined relationship. Before the experiment, the total flow rate of the sprayed water should be determined according to the total air volume B first.

[0041] According to an embodiment provided by the present invention, the control method of the spraying device 500 further includes: Controlling the heat exchanger 400 to continuously operate for a first set time period t1; Determining the ambient temperature outside the heat exchanger 400 T e is greater than the first set ambient temperature Te_set1, and the exhaust temperature of the compressor T d is greater than the first set exhaust temperature Td_set1, and supplying water to the spray head 120; Determining that the water supply to the spray head 120 lasts for a second set time period t2, and controlling the spray head 120 to move spray the heat exchanger 400 along the set direction at a moving speed v

[0042] In this embodiment, first, it is determined whether the spray pipe 110 and the water pipe 140 are connected. If they are connected, proceed to the next step. If not, connect the pipeline, and then the spraying device 500 is powered on and the spray pipe 110 is reset. The heat exchanger 400 continuously operates for the first set time period t1, and during this period, the ambient temperature T e outside the heat exchanger 400 and the exhaust temperature of the compressor T d are obtained in real time. If within the first set time period t1, the ambient temperature T e is always greater than the first set ambient temperature Te_set1, and the exhaust temperature T d is always greater than the first set exhaust temperature Td_set1, then proceed to the next step, that is, open the solenoid valve to supply water to the spray pipe 110 and the spray head 120 through the water pipe 140.

[0043] ​After opening the solenoid valve, wait for the second set time period t2, that is, the water pipe 140 continuously supplies water to the spray pipe 110 and the nozzle 120, but the nozzle 120 does not spray water outward for the second set time period t2. After the water flow in the spray pipe 110 is stable, control the spray pipe 110 to move and spray along the set direction at a moving speed v Perform moving spraying along the set direction.

[0044] In this embodiment, the second set time period t2 can be 5 s to 30 s.

[0045] It can be understood that in this embodiment, the spraying start condition of the spraying device 500 is the ambient temperature T e outside the heat exchanger 400 and the exhaust temperature T d of the compressor. As a judgment condition, actually mainly based on the exhaust temperature T d of the compressor. In other embodiments, other parameters can also be used as the start condition according to actual working requirements.

[0046] According to an embodiment provided by the present invention, the control method of the spraying device 500 further includes: Control the nozzle 120 to move along the set direction at a moving speed v Perform moving spraying on the heat exchanger 400 for a third set time period t3; Determine the ambient temperature T e outside the heat exchanger 400 is less than or equal to the second set ambient temperature Te_set2, or the exhaust temperature T d of the compressor is less than or equal to the second set exhaust temperature Td_set2, stop supplying water to the nozzle 120, and control the nozzle 120 to move to the initial position.

[0047] In this embodiment, after controlling the nozzle 120 to move along the set direction and perform spraying on the heat exchanger 400 for the third set time period t3, judge the ambient temperature T e outside the heat exchanger 400 and the relationship with the second set ambient temperature Te_set2, or the exhaust temperature T d of the compressor and the relationship with the second set exhaust temperature Td_set2. If the ambient temperature T e outside the heat exchanger 400 is less than or equal to the second set ambient temperature Te_set2, or the exhaust temperature T d of the compressor is less than or equal to the second set exhaust temperature Td_set2, then stop supplying water to the nozzle 120 and the spray pipe 110, and reset the spray pipe 110 to the initial position.

[0048] It can be understood that in this embodiment, the spraying stop condition of the spraying device 500 is the ambient temperature T e outside the heat exchanger 400 and the exhaust temperature TUsing d as the judgment condition, in fact, it mainly depends on the exhaust temperature of the compressor T For the judgment condition of d, in other embodiments, other parameters can also be used as the opening condition according to actual working requirements. For a complex system, the conditions for spraying on and off may also become complex.

[0049] According to an embodiment provided by the present invention, controlling the nozzle 120 to move along a set direction at a moving speed v After continuously moving and spraying the heat exchanger 400 for a third set time period t3, it further includes:[[]]END]] Determining the ambient temperature outside the heat exchanger 400 T When e is greater than the second set ambient temperature Te_set2 and the exhaust temperature of the compressor T d is greater than the second set exhaust temperature Td_set2, continue to control the nozzle 120 to move along the set direction at a moving speed v To continuously move and spray the heat exchanger 400 for a third set time period t3.

[0050] In this embodiment, after controlling the nozzle 120 to move along the set direction and spraying the heat exchanger 400 for a third set time period t3, judge the ambient temperature outside the heat exchanger 400 T The relationship between e and the second set ambient temperature Te_set2, and the exhaust temperature of the compressor T The relationship between d and the second set exhaust temperature Td_set2. If the ambient temperature outside the heat exchanger 400 T e is greater than the second set ambient temperature Te_set2 and the exhaust temperature of the compressor T d is greater than the second set exhaust temperature Td_set2, then continue to supply water to the nozzle 120 and the spray pipe 110, and the nozzle 120 continues to move and spray the heat exchanger 400.

[0051] According to an embodiment provided by the present invention, the first set ambient temperature Te_set1 is greater than or equal to the second set ambient temperature Te_set2, and the first set exhaust temperature Td_set1 is greater than or equal to the second set exhaust temperature Td_set2.

[0052] In this embodiment, after the spraying is turned on, the air temperature around the temperature sensor for detecting the ambient temperature generally decreases, and the exhaust temperature of the compressor T d generally also decreases. Therefore, Te_set2 ≤ Te_set1 and Td_set2 ≤ Td_set1 can be set to prevent the program from misjudging the decrease in ambient temperature and causing the spraying to turn on and off frequently.

[0053] Therefore, the first set environmental temperature Te_set1 and the first set exhaust temperature Td_set1 are the judgment conditions for the first spray start after the spray device 500 is powered on. After the spray device 500 starts spraying, when detecting whether to continue spraying again, or after the spray device 500 stops spraying for a short time and then detecting whether to continue spraying again, the judgment conditions for spray start of the second set environmental temperature Te_set2 and the second set exhaust temperature Td_set2 are both adopted.

[0054] According to an embodiment provided by the present invention, the third set time period t3 is the reciprocating movement period for at least one nozzle 120 to spray the heat exchanger 400 along the set direction. In this embodiment, after the spray device 500 is started, the motor can drive the spray pipe 110 to reciprocate along the set direction through forward and reverse rotation. The time for the spray pipe 110 to advance from the initial position along the set direction and then return to the initial position in the reverse direction along the set direction is a reciprocating movement period.

[0055] The third set time period t3 can be multiple reciprocating movement periods, that is, after the spray device 500 is started, the spray pipe 110 can perform multiple reciprocating movement sprays, and then judge whether to continue spraying according to the relationship between the ambient temperature at that time and the second set environmental temperature Te_set2, and the exhaust temperature of the compressor at that time and the second set exhaust temperature Td_set2.

[0056] According to an embodiment provided by the present invention, the moving speed of the nozzle 120 is less than or equal to 0.2 m / s. In this embodiment, the moving speed of the nozzle 120 v also needs to be controlled within a certain range to prevent damage caused by unstable spray pipelines due to too fast speed. It can be selected as 0 m / s ≤ v ≤ 0.2 m / s.

[0057] It can be understood that in the above embodiment, the spray pipe 110 extends in the horizontal direction and moves back and forth between the highest position and the lowest position of the heat exchanger 400, that is, the set direction is the height direction of the spray pipe 110. In addition to the above embodiment, the spray pipe 110 can also extend in the vertical direction and move back and forth between the rightmost position and the leftmost position of the heat exchanger 400, that is, the set direction is the length direction of the spray pipe 110.

[0058] Such as Figure 5 shown, for a heat exchanger 400 that needs to be sprayed on multiple sides, the coverage range of the spray surface can be increased, that is, spray devices 500 are respectively arranged on multiple air inlet surfaces of the heat exchanger 400. Other deformations of the moving trajectory and the coverage range of the spray pipe 110 can also be made according to the actual situation. The length and width directions of the heat exchanger 400 are relative to the set direction, that is, when the orientations of the air inlet surfaces are different, the surface formed by the length and height of the heat exchanger 400 with the air inlet surface as the reference.

[0059] As shown Figure 6 in the figure, an electronic device provided by an embodiment of the present invention may include: a processor 810, a communications interface 820, a memory 830, and a communication bus 840. Among them, the processor 810, the communications interface 820, and the memory 830 complete communication with each other through the communication bus 840. The processor may call the logical instructions in the memory to execute the control method of the spraying device in the above embodiment.

[0060] In addition, when the logical instructions in the above memory are implemented in the form of software functional units and sold or used as an independent product, they may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the related technology, or a part of this technical solution, may be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0061] An embodiment of the present invention discloses a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control method of the spraying device in the above embodiment. On the other hand, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the control method of the spraying device in the above embodiment.

[0062] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0063] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the above technical solution, in essence, or the part that contributes to the relevant technology can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for a spraying device (500), characterized in that, Including: Based on the ambient temperature outside the heat exchanger (400) and the relative air volume distribution of the heat exchanger (400), obtain the moving speed of the nozzle (120) of the spraying device (500); Control the nozzle (120) to perform moving spraying on the heat exchanger (400) along a set direction at the moving speed.

2. The control method of the spray device (500) according to claim 1, wherein, The obtaining the moving speed of the nozzle (120) of the spraying device (500) based on the ambient temperature outside the heat exchanger (400) and the relative air volume distribution of the heat exchanger (400) includes: Based on the total air volume of the heat exchanger (400) and the set air volume distribution of the heat exchanger (400), obtain the relative air volume distribution at each position along the set direction of the heat exchanger (400), and the set air volume distribution is the air volume at each position along the set direction of the heat exchanger (400); Based on the ambient temperature outside the heat exchanger (400) and the relative air volume distribution at each position along the set direction of the heat exchanger (400), obtain the moving speed of the nozzle (120).

3. The control method of the spraying device (500) according to claim 2, characterized in that, The relative air volume distribution at each position along the set direction of the heat exchanger (400) is the ratio of the set air volume distribution of the heat exchanger (400) to the total air volume of the heat exchanger (400).

4. The control method of the spraying device (500) according to claim 1, characterized in that, Also including: Control the heat exchanger (400) to continuously operate for a first set time period; Determine that the ambient temperature outside the heat exchanger (400) is greater than a first set ambient temperature, and the exhaust temperature of the compressor is greater than a first set exhaust temperature, and supply water to the nozzle (120); Determine that water supply to the nozzle (120) lasts for a second set time period, and control the nozzle (120) to perform moving spraying on the heat exchanger (400) along a set direction at the moving speed.

5. The control method of the spraying device (500) according to claim 4, characterized in that, Also including: Control the nozzle (120) to perform moving spraying on the heat exchanger (400) along a set direction at the moving speed for a third set time period; Determine that the ambient temperature outside the heat exchanger (400) is less than or equal to a second set ambient temperature, or the exhaust temperature of the compressor is less than or equal to a second set exhaust temperature, stop supplying water to the nozzle (120), and control the nozzle (120) to move to the initial position; or, determine that the ambient temperature outside the heat exchanger (400) is greater than the second set ambient temperature, and the exhaust temperature of the compressor is greater than the second set exhaust temperature, and continue to control the nozzle (120) to perform moving spraying on the heat exchanger (400) along a set direction at the moving speed for a third set time period.

6. The control method of the spraying device (500) according to claim 5, characterized in that, The first set ambient temperature is greater than or equal to the second set ambient temperature, and the first set exhaust temperature is greater than or equal to the second set exhaust temperature.

7. The control method of the spraying device (500) according to claim 5 or 6, characterized in that, The third set time period is the reciprocating movement cycle for at least one nozzle (120) to spray the heat exchanger (400) along a set direction.

8. The control method of the spray device (500) according to any one of claims 1 to 7, characterized in that, The moving speed of the nozzle (120) is less than or equal to 0.2 m / s.

9. A spraying device (500), characterized in that, Including: Spraying assembly (100), the spraying assembly (100) includes a spray pipe (110), a spray head (120) and a water supply component, the extending direction of the spray pipe (110) forms a set angle with the set direction, at least one spray head (120) is provided on the spray pipe (110), and the water supply component is communicated with the spray pipe (110); Driving assembly (200), the driving assembly (200) includes a driver (210), a transmission component (220) and a guiding component, the spray pipe (110) is connected to the transmission component (220), the driver (210) is connected to the transmission component (220) to drive the transmission component (220) to drive the spray pipe (110) to move along the set direction, the guiding component extends along the set direction and is slidably connected to the spray pipe (110); Control device, the control device is electrically connected to the driver (210) and the water supply component, and is adapted to execute the control method of the spraying device (500) according to any one of claims 1 to 8.

10. A heat exchange unit, characterized in that, Comprising: At least one heat exchanger (400); The spraying device (500) according to claim 9, the spray pipe (110) is arranged outside the heat exchanger (400), and the extending direction of the spray pipe (110) is perpendicular to the width direction of the heat exchanger (400), and the set direction is along the height direction or the length direction of the heat exchanger (400).

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