Cooling apparatus, control method thereof, storage medium, and program product

Abstract

The invention provides a cooling device and a control method thereof, a storage medium and a program product, and relates to the technical field of cooling. The cooling device comprises a filtering system; the filtering system comprises a filter, an inlet pressure sensor, an outlet pressure sensor, a pump front switching valve, a one-way valve, a flushing pump, a sewage draining switching valve and an outlet switching valve; the filter comprises a barrel and a filter element located in the barrel, and the barrel comprises an inlet, an outlet and a drain outlet located between the inlet and the outlet; the one-way valve is arranged at the inlet, is sequentially connected with the filters and then is connected in parallel with the pre-pump switch valve and the flushing pump which are sequentially connected; the before-pumping switch valve is close to the one-way valve; the inlet pressure sensor is arranged at one end of the filtering system close to the refrigerating system; the outlet switch valve and the outlet pressure sensor are arranged at the end, close to the cooling system, of the filtering system. Automatic cleaning is achieved, manual intervention is not needed, time and labor are saved, and the service life of the filter element can be greatly prolonged.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of cooling technology, and in particular to a cooling device and a control method thereof, a storage medium, and a program product. Background Art

[0002] Cooling devices dissipate heat from heat loads, ensuring continuous and stable operation. Impurities in cooling devices are inevitable, including impurities that enter the cooling medium, welds generated during pipe production, and corrosive impurities from the pipes. To prevent impurities from clogging the cooling device pipes, filters are typically installed within the cooling device to filter the cooling medium through the filter element.

[0003] In existing cooling systems, filter elements typically need to be removed and cleaned regularly. Each cleaning requires shutting down the system and removing the filter element, which is time-consuming and labor-intensive. Furthermore, after cleaning, the cooling system must be re-pressurized for leak detection, which is also time-consuming and labor-intensive, and can easily lead to secondary failures such as system leaks caused by cleaning the filter element. Furthermore, improperly timing cleaning can cause serious downtime and downtime. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide a cooling device and a control method thereof, a storage medium, and a program product that overcome the above problems or at least partially solve the above problems.

[0005] In a first aspect, an embodiment of the present application discloses a cooling device, comprising:

[0006] A controller, and a medium supply system, a refrigeration system, a filtration system, and a cooling system electrically connected to the controller and arranged in sequence;

[0007] The filtration system includes: a filter, an inlet pressure sensor, an outlet pressure sensor, a pump front switch valve, a one-way valve, a flushing pump, a sewage switch valve, and an outlet switch valve; the filter includes: a cylinder and a filter element located in the cylinder, the cylinder includes: an inlet and an outlet, and a sewage outlet located between the inlet and the outlet; the one-way valve is arranged at the inlet, and after being connected to the filter in sequence, is connected in parallel with the pump front switch valve and the flushing pump connected in sequence; the pump front switch valve is close to the one-way valve; the inlet pressure sensor is arranged at one end of the filtration system close to the refrigeration system; the outlet switch valve and the outlet pressure sensor are both arranged at one end of the filtration system close to the cooling system; the sewage switch valve is connected to the sewage outlet; the sensor, the flushing pump and all valves are electrically connected to the controller.

[0008] Optionally, the flushing pump comprises a high-lift flushing pump.

[0009] Optionally, when the flushing pump is turned on:

[0010] Flow rate greater than or equal to 0.5m 3 / h; and / or, the lift is greater than or equal to 30m; and / or, the pressure of the sewage switch valve is greater than atmospheric pressure, and the pressure difference with atmospheric pressure is greater than or equal to 100kPa.

[0011] Optionally, when the flushing pump is turned on: the flow rate is less than or equal to 2m 3 / h; and / or, the pressure difference is less than or equal to 300kPa.

[0012] In a second aspect, a control method for a cooling device is provided, which is applied to any of the aforementioned cooling devices; the method comprises:

[0013] When the one-way valve and the outlet switch valve are both in the open state, the pump front switch valve, the sewage switch valve and the flushing pump are all in the closed state, and the pressure difference between the inlet and the outlet is greater than or equal to the preset pressure, the refrigeration system is controlled to be closed;

[0014] After the refrigeration system is shut down for a first preset time, the cooling system and the outlet switch valve are controlled to be closed, and the pump front switch valve and the sewage switch valve are controlled to be opened;

[0015] After the pump front switch valve and the sewage switch valve are both opened for the second preset time, the flushing pump is controlled to start opening. During the opening process, the flushing pump extracts medium from the medium supply system, and the medium enters the cylinder from the outlet of the cylinder, flushes the filter element, and is discharged from the sewage outlet.

[0016] Optionally, after the flushing pump starts to be turned on, the flushing pump is controlled to be turned on for a third preset time period and then turned off for a fourth preset time period, thereby cyclically controlling the flushing pump to work.

[0017] Optionally, the method further includes:

[0018] After the flushing pump starts to be turned on for a fifth preset time, the flushing pump, the pump front switch valve and the sewage switch valve are all controlled to be closed, and the outlet switch valve is controlled to be restored to open;

[0019] After the outlet switch valve is reopened for a sixth preset time period, controlling the cooling system to reopen;

[0020] After the cooling system is restored to operation for a seventh preset time period, the refrigeration system is controlled to be restored to operation.

[0021] Optionally, the cooling device further comprises: a display screen;

[0022] Before the pump front switch valve is opened, the method further includes: prompting on the display screen to start cleaning the filter element; and / or,

[0023] After the flushing pump is turned off, the method further includes: prompting on the display screen that the cleaning of the filter element is finished.

[0024] Optionally, the preset pressure is 0.2 MPa;

[0025] The first preset duration is 3 seconds to 15 seconds;

[0026] The second preset time length is 1 second to 10 seconds.

[0027] Optionally, the third preset time length and the fourth preset time length are both 1 second to 10 seconds.

[0028] Optionally, the fifth preset time length is 0.5 minutes to 5 minutes;

[0029] The sixth preset time length and the seventh preset time length are both 5 seconds to 10 seconds.

[0030] According to a third aspect, an electronic device is provided, including:

[0031] A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any one of the aforementioned methods for controlling a cooling device is implemented.

[0032] In a fourth aspect, a readable storage medium is provided, which, when instructions in the storage medium are executed by a processor of an electronic device, enables the electronic device to execute any of the aforementioned methods for controlling a cooling device.

[0033] In a fifth aspect, a computer program product is provided, comprising instructions, which, when executed by a processor in an electronic device, enable the electronic device to execute any one of the aforementioned methods for controlling a cooling device.

[0034] In the embodiment of the present application, an inlet pressure sensor is arranged at one end of the refrigeration system in the filtration system, which can measure the pressure at the inlet of the filter cylinder, and an outlet pressure sensor is arranged at one end of the cooling system, which can measure the pressure at the outlet of the filter cylinder. When the pressure difference between the two is greater than the preset pressure, it means that the pressure at the outlet is much smaller than the pressure at the inlet. The main reason is that the filter element is blocked, resulting in poor passage of the cooling medium. In this case, the filter element needs to be cleaned, which realizes automatic judgment of the degree of blockage of the filter element and automatic start of filter element cleaning and sewage discharge. On the one hand, the determination of the cleaning timing is more accurate and will not cause serious faults such as shutdown. Moreover, the determination of the cleaning timing is more accurate, and the filter element will not have problems such as deformation due to excessive impurities, which can greatly extend the service life of the filter element. On the other hand, the determination of the cleaning timing does not require manual intervention, which saves time and effort. At the same time, it is only necessary to control the refrigeration system, cooling system and outlet switch valves to be closed through the controller, and the pump front switch valve, flushing pump and sewage discharge switch valve to be opened, so that the flushing pump can extract the medium so that the medium enters the cylinder from the outlet of the cylinder. The filter element is automatically cleaned by flushing the filter element and discharging it from the drain outlet. First, the cooling device does not need to be shut down to clean the filter element, and the filter element does not need to be removed from the filter. Therefore, the filter element does not need to be installed after cleaning, which saves time and effort. Second, since the filter element is not removed, the cooling device does not need to be re-pressurized for leak detection after cleaning, which saves time and effort, and will not cause secondary failures such as system sealing due to cleaning the filter element. Third, the filter element does not require manual maintenance when cleaning the filter. The filter is automatically cleaned and drained according to the pressure difference between the inlet sensor and the outlet sensor. The filter element is maintenance-free, and the cooling device operates more stably, which helps improve the reliability of thermal load operation. Fourth, the provision of the outlet switch valve and the one-way valve can ensure that the high-pressure fluid flow generated by the flushing pump in the working state will not flow into the cooling system or backflow into the refrigeration system, thereby not causing adverse effects on other parts of the cooling device. Fifth, in this filtration system, the inlet pressure sensor and outlet pressure sensor used to automatically determine the cleaning time reuse the inlet pressure sensor and outlet pressure sensor of the original filtration system, eliminating the need to set up a new pressure differential sensor and requiring less improvement to the cooling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a working schematic diagram of a cooling device provided by an embodiment of the present invention;

[0036] Figure 2 This is another working schematic diagram of a cooling device provided by an embodiment of the present invention;

[0037] Figure 3 This is a working schematic diagram of a cooling device provided by the relevant technology;

[0038] Figure 4This is a flow chart of a control method for a cooling device provided by an embodiment of the present invention.

[0039] Description of the accompanying drawings:

[0040] 1- Medium supply system, 2- Refrigeration system, 3- Inlet pressure sensor, 4- Pump front switch valve, 5- Check valve, 6- Flushing pump, 7- Filter, 8- Drain switch valve, 9- Outlet switch valve, 10- Outlet pressure sensor, 11- Cooling system, 12- Heat load. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0042] This application provides a cooling device, referring to Figure 1 and Figure 2 The cooling device includes: a controller (not shown in the figure), and a medium supply system 1, a refrigeration system 2, a filtration system, and a cooling system 11, which are electrically connected to the controller and arranged in sequence. The medium supply system 1 is used to provide a medium. The refrigeration system 2 is used to cool the medium, the filtration system is used to filter the medium, and the cooling system 11 is used to cool the heat load 12 using the refrigerated medium. During the heating process, the cooling medium takes away the heat from the heat load 12. The medium can be a gas medium or a liquid medium, and the specific state of the medium is not limited. For example, the liquid medium can be water, an ethylene glycol aqueous solution, etc., and the gaseous medium can be an inert gas such as nitrogen. In the case where the liquid medium is an ethylene glycol aqueous solution, colloidal impurities will be generated after the ethylene glycol aqueous solution deteriorates.

[0043] The heat load 12 can be a device that generates heat during operation and requires cooling, and there is no limitation on the specific heat load. For example, with the rapid development of high-power chip technology, large antennas and electronic equipment in supercomputing centers have also experienced extraordinary development in recent years. As a typical representative of third-generation semiconductor materials, replacing traditional gallium arsenide chips with gallium nitride chips can increase chip efficiency from 30% to 50%, which is an important means to enhance the capabilities of high-power electronic chips. While gallium nitride chips improve the capabilities of high-power chips, they also bring about the problem of significantly increased heat flux density. The heat load can be the gallium nitride chip here.

[0044] For liquid or gaseous media, a fluid connector may be installed in the heat load. The flow path of the fluid connector may usually be less than 1 mm and easily clogged by impurities in the circulating cold medium. To prevent clogging of the fluid connector, a filtration system must be installed in the cooling device. The filtration system needs to be equipped with a filter 7. The grade of the filter 7 is not limited. For example, the filter can be a fine filter with a filtration grade of 40 μm.

[0045] Reference Figure 3 The cooling device of the related art shown does not have an automatic filter element cleaning function. Therefore, in order to clean the filter element, the cooling device must first be shut down, the filter element in the filter cartridge must be removed and cleaned, and then reinstalled into the cartridge. This process takes at least one hour and is time-consuming and labor-intensive. Moreover, since disassembly and reinstallation may cause sealing problems, the cooling device must be re-pressurized and tested for leaks after reinstallation, which is time-consuming and labor-intensive, and is prone to secondary failures such as system sealing caused by cleaning the filter element. In addition, the cleaning of the filter element in the related art is mainly carried out regularly or based on human experience. The timing is not accurate. If the cleaning interval is too short, it will have a significant impact on the working state of the heat load. If the cleaning interval is too long, it will cause serious failures such as shutdown. Moreover, the filter element is generally composed of a large area of ​​stainless steel mesh material with weak pressure bearing capacity. If it is not cleaned in time, not only will the filter area of ​​the filter element not be maintained, but the blockage area will be too large, thereby increasing the pressure bearing capacity of the filter element, causing the filter element to deform and rupture and fail, shortening the filter element life.

[0046] In view of the above technical problems in the related art, in this application, reference is made to Figure 1 and Figure 2 In addition to the filter 7, the filtration system may also include: an inlet pressure sensor 3, an outlet pressure sensor 10, a pre-pump switch valve 4, a one-way valve 5, a flushing pump 6, a sewage switch valve 8, and an outlet switch valve 9; the filter 7 includes: a cylinder and a filter element located in the cylinder, the cylinder includes: an inlet and an outlet, and a sewage outlet located between the inlet and outlet of the cylinder. Figure 1 and Figure 2In the figure, the inlet is located on the left side of the cylinder, the outlet is on the right side, and the sewage outlet is located approximately in the middle of the lower side of the cylinder. A one-way valve 5 is installed at the inlet of the cylinder and is connected in sequence to a filter 7. A pre-pump on-off valve 4 and a flushing pump 6 are also connected in sequence. After the one-way valve 5 and the filter 7 are connected in sequence, they are connected in parallel with the pre-pump on-off valve 4 and flushing pump 6. The pre-pump on-off valve 4 is located near the one-way valve 5. An inlet pressure sensor 3 is installed at the end of the filter system or filter near the refrigeration system 2, or in other words, at the inlet of the filter 7's cylinder, to measure the pressure at the inlet of the filter 7's cylinder. An outlet on-off valve 9 and an outlet pressure sensor 10 are both installed at the end of the filter system or filter near the cooling system 11, or in other words, at the outlet of the filter 7's cylinder, to measure the pressure at the outlet of the filter 7's cylinder. A sewage on-off valve 8 is connected to the sewage outlet to control the opening and closing of the sewage outlet of the cylinder. The inlet pressure sensor 3, the outlet pressure sensor 10, the pump front switch valve 4, the one-way valve 5, the flushing pump 6, the sewage switch valve 8, and the outlet switch valve 9 are all electrically connected to the controller, and the controller can control the above-mentioned devices electrically connected to it to open or close.

[0047] In response to the above technical problems in the related art, in the embodiment of the present application, in the filtration system, the inlet pressure sensor 3 arranged at one end near the refrigeration system 2 can measure the pressure at the cylinder inlet of the filter 7, and the outlet pressure sensor 10 arranged at one end near the cooling system 11 can measure the pressure at the cylinder outlet of the filter 7; when the pressure difference between the two is greater than the preset pressure, it means that the pressure at the outlet is much smaller than the pressure at the inlet, and the main reason is that the filter element is blocked, resulting in poor passage of the cooling medium. In this case, the filter element needs to be cleaned, and the degree of blockage of the filter element is automatically determined, and the filter element cleaning and sewage discharge are automatically started. On the one hand, the determination of the cleaning timing is more accurate, and serious faults such as fault shutdown will not be caused. In addition, the determination of the cleaning timing is more accurate, and the filter element will not have problems such as deformation due to excessive impurities, which can greatly extend the service life of the filter element; on the other hand, the determination of the cleaning timing does not require manual intervention, saving time and effort; at the same time, it is only necessary to control the refrigeration system, the cooling system and the outlet switch valve 9 to be closed, and the pump front switch valve 4, the flushing pump 6, and the sewage switch valve 8 to be opened, so that the flushing pump 6 can extract the medium, so that the medium enters the cylinder from the outlet of the cylinder, After the filter element is flushed and discharged from the sewage outlet, the filter element is automatically cleaned. First, there is no need to shut down the cooling device for cleaning the filter element, and there is no need to remove the filter element from the filter 7, so there is no need to install the filter element after cleaning, which saves time and effort; second, since the filter element is not removed, there is no need to re-pressurize the cooling device for leak detection after cleaning, which saves time and effort, and will not cause secondary failures such as system sealing due to cleaning the filter element; third, no manual maintenance is required for cleaning the filter element 7. The filter 7 is automatically cleaned and drained according to the pressure difference between the inlet sensor 3 and the outlet sensor 10, and the filter element is maintenance-free, and the cooling device runs more stably. , which helps to improve the operational reliability of the heat load 12; Fourth, in the filtration system, the inlet pressure sensor 3 and the outlet pressure sensor 10 used to automatically determine the cleaning time reuse the inlet pressure sensor and the outlet pressure sensor in the original filtration system, and there is no need to set up a new pressure difference sensor. The improvement to the cooling device is relatively small, and the compatibility with the original filtration system is relatively high; Fifth, the setting of the outlet switch valve 9 and the one-way valve 5 can ensure that the high-pressure fluid flow generated by the flushing pump in the working state will not flow into the cooling system 11, nor will it flow back into the refrigeration system 2, and will not bring adverse effects on other parts of the cooling device.

[0048] It should be noted that the specific types of impurities in the filter element are not limited. For example, dust in the medium and weld scale generated during the pipe production process; another example is colloidal substances produced by the deterioration of the liquid medium; and for example, the corrosion impurities caused by the potential difference between the different materials of the cooling device pipes, which are generally composed of steel, aluminum, copper, etc., are generally flocculent.

[0049] Optionally, all of the aforementioned on-off valves mentioned in this application may be solenoid valves. Solenoid valves are electromagnetically controlled devices and are fundamental automation components used to control fluids. They are actuators, not limited to hydraulic or pneumatic actuators. Solenoid valves can be used with various circuits to achieve desired control, ensuring both precision and flexibility.

[0050] Optionally, the flushing pump 6 includes a high-lift flushing pump, which forms a large pressure difference between the sewage solenoid valve and the atmosphere at the moment the pump is turned on, flushing away impurities on the filter element. The flushing force is high and a good cleaning effect can be achieved.

[0051] Optionally, when the flushing pump 6 is turned on: the flow rate is greater than or equal to 0.5m 3 / h (cubic meters per hour), with large flow rate and high flushing intensity, good cleaning effect can be achieved.

[0052] Optionally, when the flushing pump 6 is turned on: the flow rate is less than or equal to 2m 3 / h, on the one hand, when the flushing pump 6 is turned on: the flow rate is 0.5m 3 / h to 2m 3 / h, the filter element can be cleaned. On the other hand, when the flushing pump 6 is turned on: the flow rate is greater than 2m 3 / h, the flow rate is too large and the flushing force is too high, which may cause the medium to break through the filter element and damage the filter element.

[0053] For example, when the flushing pump 6 is turned on, the flow rate can be 0.5m 3 / h、0.8m 3 / h、0.9m 3 / h、1m 3 / h、1.2m 3 / h、1.5m 3 / h、1.75m 3 / h、1.8m 3 / h、1.9m 3 / h、2m 3 / h.

[0054] Optionally, when the flushing pump 6 is turned on, the lift is greater than or equal to 30m. At the moment the pump is turned on, a large pressure differential is formed between the sewage discharge solenoid valve and the atmosphere, flushing away impurities on the filter element. The flushing force is high, and a good cleaning effect can be achieved. For example, when the flushing pump 6 is turned on, the lift can be 30m, 31m, 32m, 35m, 38m, 39m, 40m, 42m, 45m, 48m, or 50m.

[0055] Optionally, when the flushing pump 6 is turned on: the pressure of the sewage switch valve is greater than the atmospheric pressure, and the pressure difference with the atmospheric pressure is greater than or equal to 100kPa. When the flushing pump 6 is turned on, a large pressure difference is formed at the sewage solenoid valve and the atmosphere, which flushes away impurities on the filter element. The flushing force is high and a good cleaning effect can be achieved.

[0056] Optionally, when the flushing pump 6 is turned on: the pressure of the sewage switch valve is greater than the atmospheric pressure, and the pressure difference with the atmospheric pressure is less than or equal to 300kPa. On the one hand, when the flushing pump 6 is turned on: the pressure difference with the atmospheric pressure is 100kPa to 300kPa, which is enough to clean the filter element. On the other hand, when the flushing pump 6 is turned on: the pressure of the sewage switch valve is greater than the atmospheric pressure, and the pressure difference with the atmospheric pressure is greater than 300kPa. The pressure is too high and the flushing force is too high, which may cause the medium to break through the filter element and damage the filter element.

[0057] For example, when the flushing pump 6 is turned on: the pressure of the sewage switch valve is greater than the atmospheric pressure, and the pressure difference with the atmospheric pressure can be 100kPa, 110kPa, 120kPa, 150kPa, 180kPa, 200kPa, 220kPa, 250kPa, 280kPa, 300kPa.

[0058] The present application provides a control method for a cooling device, which is applicable to any of the aforementioned cooling devices. Figure 4 , the method includes the following steps.

[0059] Step 101, when the one-way valve and the outlet switch valve are both in the open state, the pump front switch valve, the sewage switch valve and the flushing pump are all in the closed state, and the pressure difference between the inlet and the outlet is greater than or equal to the preset pressure, control the refrigeration system to shut down.

[0060] Reference Figure 2 , the one-way valve 5 and the outlet switch valve 9 are both in the open state, the pump front switch valve 4 and the sewage switch valve 8 are both in the closed state, and the flushing pump 6 is in the closed state, then the movement of the medium in the cooling device is as follows Figure 2As shown, in this case, the cooling device operates normally, the filter element in the filter is not cleaned, and the cooling system 11 operates normally. That is: the flushing pump 6 does not work, the pre-pump switch valve 4 and the sewage switch valve 8 are closed, the one-way valve 5 circulates in one direction, the switch valve 10 remains open, and the medium is cooled by the refrigeration system 2. The cooled medium passes through the filter and dissipates heat to the heat load 12. The inlet pressure sensor 3 and the outlet pressure sensor 10 collect the fluid pressure of the cylinder entering and exiting the filter. The pressure measured by the inlet pressure sensor 3 will be greater than the pressure measured by the outlet pressure sensor 10. The controller calculates the pressure difference between the collected inlet pressure and the outlet pressure. When the pressure difference reaches the preset pressure or above, it is ready to start the cleaning of the filter element. Before starting the cleaning of the filter element, turn off the refrigeration system 2.

[0061] Optionally, the preset pressure here is 0.2Mpa (megapascals), which means that when the cooling device is operating normally, the pressure at the inlet of the cylinder of the filter 7 will be greater than the pressure at the outlet of the cylinder of the filter 7. When the pressure of both is less than 0.2Mpa, it means that the filter element of the filter is relatively clean and does not need to be cleaned; when the pressure of both is greater than or equal to 0.2Mpa, it means that the filter element of the filter has been severely clogged and needs to be cleaned. The selection of the above preset pressure is more accurate, which can not only avoid unnecessary cleaning, but also avoid problems such as flattening caused by serious clogging of the filter element. That is to say, on the one hand, the determination of the cleaning timing is more accurate, and will not cause serious faults such as malfunction and shutdown. Moreover, the determination of the cleaning timing is more accurate, and the filter element will not have problems such as deformation due to excessive impurities, which can greatly extend the service life of the filter element. On the other hand, the determination of the cleaning timing does not require manual intervention, saving time and effort.

[0062] Step 102: After the refrigeration system is closed for a first preset time, the cooling system and the outlet switch valve are controlled to be closed, and the pre-pump switch valve and the sewage switch valve are controlled to be opened.

[0063] Before starting the cleaning process of the filter element, the refrigeration system 2 is first shut down. After the refrigeration system 2 is shut down for a first preset time, the cooling system 11 and the outlet switch valve 9 are controlled to be closed, and the pre-pump switch valve 4 and the sewage switch valve 8 are controlled to be opened. The refrigeration system 2 is usually equipped with components such as a refrigeration compressor and a plate heat exchanger. These components need to be shut down before the cooling system 11 is shut down to avoid damage to the compressor. More specifically, there is a process for shutting down the compressor in the refrigeration system 2. First, the refrigeration system 2 is controlled to stop. This can prevent the liquid or gas supply to the cooling system 11 from stopping before the compressor completely stops, causing the cooling capacity generated by the compressor to accumulate in the refrigeration system 2. That is, by controlling the refrigeration system 2 to stop first and then controlling the cooling system 11 and the outlet switch valve 9 to be closed, the refrigerant generated by the compressor of the refrigeration system 2 can be transferred out of the refrigeration system as much as possible, and the refrigerant is prevented from remaining in the refrigeration system 2 as much as possible.

[0064] Optionally, the first preset duration here can be 3 seconds to 15 seconds, that is, after the refrigeration system 2 is shut down for 3 seconds to 15 seconds, the cooling system 11 and the outlet switch valve 9 are controlled to be closed, and the pump front switch valve 4 and the sewage switch valve 8 are controlled to be opened. If the first preset duration is less than 3 seconds, the refrigerant medium produced by the compressor of the refrigeration system 2 has not yet completely come out of the refrigeration system 2. If the first preset duration is greater than 15 seconds, the refrigerant medium produced by the compressor of the refrigeration system 2 has already completely come out of the refrigeration system 2, and the idle time is long, which wastes time. Therefore, in this application, the first preset duration is set to 3 seconds to 15 seconds, which not only ensures that the refrigerant medium produced by the compressor of the refrigeration system 2 is basically completely out of the refrigeration system 2, but also does not waste time. The first preset duration here can be further preferably 8 to 12 seconds, so that the refrigerant medium produced by the compressor of the refrigeration system 2 comes out of the refrigeration system 2 more thoroughly, and does not waste time.

[0065] For example, the first preset duration here can be: 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 8.5 seconds, 9 seconds, 9.5 seconds, 10 seconds, 10.5 seconds, 11 seconds, 11.5 seconds, 12 seconds, 13 seconds, 14 seconds, and 15 seconds.

[0066] In step 103, after the pump front switch valve and the sewage switch valve are both opened for the second preset time, the flushing pump is controlled to start. During the opening process, the flushing pump extracts medium from the medium supply system, and the medium enters the cylinder from the outlet of the cylinder, flushes the filter element, and is discharged from the sewage outlet.

[0067] The refrigeration system 2, the cooling system 11 and the outlet switch valve 9 are closed, and the control pump front switch valve 4 and the sewage switch valve 8 are both open. After the pump front switch valve 4 and the sewage switch valve 8 are both open for the second preset time, the flushing pump 6 is controlled to start opening. The second preset time here is to leave time for the pump front switch valve 4 to open. There needs to be a time difference between the opening of the pump front switch valve 4 and the flushing pump 6 to avoid the flushing pump 6 being turned on but the pump front switch valve 4 is not fully opened, which will cause the flushing pump 6 to fail to pump fluid and shut down. The second preset time here also needs to leave time for the existing medium in the filter cylinder to be discharged, to avoid the problem that after the flushing pump 6 is turned on, the medium is not discharged from the filter cylinder in time, resulting in the flushing pump 6 not being able to operate normally.

[0068] Optionally, the second preset time length here can be 1 second to 10 seconds, that is, after the pump-front switch valve 4 and the sewage switch valve 8 are both opened for 1 second to 10 seconds, the flushing pump 6 is controlled to start opening. Specifically, if the second preset time length here is less than 1 second, the pump-front switch valve 4 may not be fully opened or the medium in the cylinder of the filter has not been completely discharged, which will cause the flushing pump 6 to be unable to operate normally. If the second preset time length here is greater than 10 seconds, the pump-front switch valve 4 has already been fully opened and the medium in the cylinder of the filter has already been completely discharged, which will result in a waste of time. Therefore, in the present application, the second preset time length can be 1 second to 10 seconds, which can not only ensure that the pump-front switch valve 4 is basically fully opened and the medium in the cylinder of the filter has basically been completely discharged, but also will not cause a waste of time. More preferably, the second preset time length can be 4 seconds to 6 seconds.

[0069] For example, the second preset duration here can be 1 second, 2 seconds, 3 seconds, 4 seconds, 4.5 seconds, 5 seconds, 5.5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, or 10 seconds.

[0070] It should be noted that, here, after the pump-front switch valve 4 is opened for the second preset time, the flushing pump 6 starts to turn on, and after the sewage switch valve 8 is opened for the second preset time, the flushing pump 6 starts to turn on. For the pump-front switch valve 4 and the sewage switch valve 8, respectively, there is no limitation on whether the second preset time lengths are equal. It can be based on whether the pump-front switch valve 4 and the sewage switch valve 8 both receive the control instruction of the controller at the same time. If the pump-front switch valve 4 and the sewage switch valve 8 both receive the control instruction of the controller at the same time, the two can be equal. If the two do not receive the control instruction of the controller at the same time, the second preset time length corresponding to the valve that receives the control instruction of the controller first may be longer.

[0071] For example, the pump front switch valve 4 receives the control instruction of the controller 0.5 seconds after the sewage switch valve 8 receives the control instruction of the controller. Then the flushing pump 6 can start to open 4.5 seconds after the pump front switch valve 4 is opened and 5 seconds after the sewage switch valve 8 is opened.

[0072] It should be noted that, in the present application, the starting point for determining the duration can be the moment when the device or component receives the control instruction from the controller. For example, after the refrigeration system is shut down for the first preset time, the starting point for the first preset time here is the moment when the refrigeration system receives the control instruction. After the pump front switch valve is opened for the second preset time, the starting point for the second preset time here is the moment when the pump front switch valve receives the control instruction. After the sewage switch valve is opened for the second preset time, the starting point for the second preset time here is the moment when the sewage switch valve receives the control instruction.

[0073] In the present application, the drain switch valve 8 is controlled to open only after the cooling system 11 and the outlet switch valve 9 are closed. After the drain switch valve 8 is opened for the second preset time, the flushing pump 6 is controlled to start opening. The drain switch valve 8 will not be opened too early, so as to avoid unnecessary loss of the medium in the medium providing system 1. It should be noted that the drain switch valve 8 is opened before the flushing pump 6 is opened, and remains open during the entire reverse flushing process. According to the characteristics of the closed system (the small system for reverse flushing is a closed system, from the pump front switch valve 4, the flushing pump 6 to the drain switch valve 8. The atmospheric pressure is unidirectional and will automatically seal the pipe of the drain switch valve 8), when the flushing pump 6 stops, the medium will not flow out. The liquid or medium will only be discharged when the flushing pump 6 is turned on, and no waste will be caused.

[0074] The medium supply system 1 also supplies the cooling system 2 with the medium to be cooled. Figure 1 and Figure 2 For example, Figure 1 and Figure 2 In the embodiment, the medium supply system 1 may include a water tank.

[0075] Reference Figure 1 After the refrigeration system 2 and the cooling system 11 stop working, the medium in the medium storage box 1 is directly extracted by the flushing pump 6 without being cooled by the cooling system 2. The medium enters the cylinder from the outlet of the filter cylinder. The medium realizes reverse high-pressure flow in the cylinder, flushes the filter element and is discharged from the drain port, which fully flushes the filter element. During the cleaning process of the filter element, the medium flow direction is referenced. Figure 1 As shown, the medium at the filter element flows in the reverse direction. After the outlet switch valve 9 is disconnected, the high-pressure fluid flow generated by the flushing pump 6 will not flow into the cooling system 11. A one-way valve 5 is provided at the inlet of the cylinder of the filter 7. The high-pressure fluid flow will not flow back into the refrigeration system 2, and will not have any adverse effects on other parts of the cooling device.

[0076] Optionally, after the flushing pump 6 starts to turn on, the flushing pump 6 is controlled to turn on for a third preset time and then off for a fourth preset time, thereby cyclically controlling the flushing pump 6 to work. Specifically, if the flushing pump 6 is always on, it will cause waste of medium and easily lead to insufficient cleaning. In the present application, controlling the flushing pump 6 to turn on and off the cycle operation will cause fluid vibration inside the pipeline, making it easier for impurities attached to the filter element of the filter to fall off, thereby improving the cleaning effect of the filter element and not causing waste of medium.

[0077] Optionally, the third preset time length and the fourth preset time length are both 1 second to 10 seconds. If both are less than 1 second, the duration of fluid excitation inside the pipeline is too short. If both are greater than 10 seconds, the pressure of the fluid is too low, and the flushing intensity of impurities attached to the filter element is insufficient. Therefore, in this application, the third preset time length and the fourth preset time length are both 1 second to 10 seconds, which can ensure the duration of fluid excitation inside the pipeline and the flushing intensity, and have a better cleaning effect on the filter element. Furthermore, the third preset time length and the fourth preset time length can both be 4 seconds to 6 seconds. It should be noted that the third preset time length and the fourth preset time length can both be 1 second to 10 seconds, and the two can be equal or unequal.

[0078] For example, the third preset time length and the fourth preset time length can be 1 second, 2 seconds, 3 seconds, 4 seconds, 4.5 seconds, 5 seconds, 5.5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, and 10 seconds.

[0079] After step 103, the method may further include steps S1 to S3. Step S1: After the flushing pump starts to be turned on for a fifth preset time, the flushing pump, the pump front switch valve, and the sewage switch valve are all controlled to be closed, and the outlet switch valve is controlled to be restored to open; Step S2: After the outlet switch valve is restored to open for a sixth preset time, the cooling system is controlled to be restored to open; Step S3: After the cooling system is restored to open for a seventh preset time, the refrigeration system is controlled to be restored to open.

[0080] The fifth preset time length is greater than the aforementioned third preset time length, and is also greater than the aforementioned fourth preset time length, or the fifth preset time length is greater than or equal to the sum of the aforementioned third preset time length and the fourth preset time length. After the flushing pump starts to open for the fifth preset time length, the filter element of the filter has been basically cleaned, so the flushing pump 6, the pre-pump switch valve 4 and the sewage switch valve 8 are all controlled to be closed, and the outlet switch valve 9 is controlled to resume opening. The sixth set time length is to confirm that each valve is opened or closed in place. After the cooling system 11 is turned on for the seventh preset time length, it can ensure that the fluid in the cooling system is in a flowing state, and then the refrigeration system 2 is controlled to resume opening to ensure that the entire cooling device runs smoothly again.

[0081] Optionally, the fifth preset time period may be 0.5 to 5 minutes. The filter can be substantially cleaned within 0.5 to 5 minutes. If the fifth preset time period is less than 0.5 minutes, the filter may not be cleaned completely. If the fifth preset time period is greater than 5 minutes, time is wasted and the filter may be cleaned excessively. Therefore, a fifth preset time period of 0.5 to 5 minutes can ensure that the filter is cleaned completely without wasting time.

[0082] For example, the fifth preset time length may be: 0.5 minutes, 0.8 minutes, 0.9 minutes, 1 minute, 1.2 minutes, 1.5 minutes, 2 minutes, 3 minutes, 4 minutes, or 5 minutes.

[0083] Optionally, the sixth preset time length may be 5 to 10 seconds, which not only ensures that each valve is fully opened or fully closed, but also avoids wasting time. For example, the sixth preset time length may be 5, 6, 7, 8, 9, or 10 seconds.

[0084] Optionally, the seventh preset time length may be 5 to 10 seconds, which not only ensures that the fluid in the cooling system is in a flowing state but also avoids wasting time. For example, the seventh preset time length may be 5, 6, 7, 8, 9, or 10 seconds.

[0085] It should be noted that the sixth preset time length and the seventh preset time length here may be equal or unequal, and there is no limitation on the relative size relationship between the two.

[0086] Optionally, the cooling device further includes: a display screen. Before the pump front switch valve 4 is opened, the method may further include: prompting the user to start cleaning the filter element on the display screen to promptly inform the user of the working status of the cooling device.

[0087] Optionally, the cooling device further includes: a display screen. After the flushing pump 6 is turned off, the method further includes: prompting the user on the display screen to complete cleaning the filter element, so as to promptly inform the user of the working status of the cooling device.

[0088] The present application is further explained below with reference to specific embodiments.

[0089] Cooling device reference Figure 1 and Figure 2 As shown. Figure 2 , the cooling device operates normally and the filter is not cleaned. Specifically, the one-way valve 5 and the outlet switch valve 9 are both in the open state, the pump front switch valve 4 and the sewage switch valve 8 are both in the closed state, the flushing pump 6 is in the closed state, and the movement of the medium in the cooling device is as follows: Figure 2As shown, in this case, the cooling device operates normally, the filter element in the filter does not need to be cleaned, and the cooling system 11 operates normally. That is, the flushing pump 6 does not work, the pre-pump switch valve 4 and the sewage switch valve 8 are closed, the one-way valve 5 is unidirectional, and the switch valve 10 remains open. After the medium is cooled by the refrigeration system 2, the cooled medium passes from the outside of the filter element to dissipate heat to the heat load 12. The inlet pressure sensor 3 and the outlet pressure sensor 10 collect the fluid pressure in and out of the cylinder of the filter. The pressure measured by the inlet pressure sensor 3 will be greater than the pressure measured by the outlet pressure sensor 10. The controller calculates the difference between the collected pressure at the inlet and the pressure at the outlet.

[0090] When the pressure difference reaches 0.2 MPa, the refrigeration system 2 is controlled to be shut down. 10 seconds after the refrigeration system 2 is shut down, the cooling system 11 is shut down, the outlet switch valve 9 is closed at the same time, and the user is prompted on the display screen to start cleaning the filter element.

[0091] Control pump pre-valve 4 and drain valve 8 are both open. Five seconds later, flush pump 6 (a high-lift pump) is activated. It runs for five seconds and then five seconds, for a total of one minute. While activated, flush pump 6 draws medium from medium supply system 1. The medium enters the filter cylinder through its outlet, flushes the filter element, and is then discharged through the drain outlet. Check valve 5 and outlet valve 9 prevent contaminated medium from affecting refrigeration system 2 and cooling system 11.

[0092] After the flushing pump 6 has run for a total of 1 minute, a message indicating that the filter element cleaning has ended is displayed on the display. At the same time, the flushing pump 6, the pump front switch valve 4, and the sewage switch valve 8 are all closed, and the outlet switch valve 9 is controlled to resume opening. 5 seconds after the outlet switch valve 9 resumes opening, the cooling system 11 is controlled to resume opening.

[0093] 5 seconds after the cooling system 2 is turned back on, the refrigeration system 21 is controlled to turn back on, and the cooling device returns to normal operation.

[0094] The present application also provides an electronic device, comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements any one of the aforementioned methods for controlling a cooling device when executing the program.

[0095] The present application also provides a readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute any of the aforementioned control methods for a cooling device.

[0096] The present application also provides a computer program product, comprising instructions, which, when executed by a processor in an electronic device, enable the electronic device to execute any of the aforementioned methods for controlling a cooling device.

[0097] It should be noted that the control system, electronic device, readable storage medium and computer program product can all refer to the description of the aforementioned control method and have the same or similar beneficial effects. In order to avoid repetition, they will not be described here.

[0098] It should be noted that for the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0099] The present application also provides an electrical appliance including any of the aforementioned control methods for cooling devices. The type of the electrical appliance is not specifically limited; for example, the electrical appliance may be an air conditioner, a robotic arm, or the like. The preparation method for the electrical appliance and the aforementioned control method for cooling devices has the same or similar beneficial effects as any of the aforementioned control methods for cooling devices, and to avoid repetition, is not further described here.

[0100] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0101] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A cooling device, characterized in that: include: A controller, and a medium supply system, a refrigeration system, a filtration system, and a cooling system electrically connected to the controller and arranged in sequence; The filtration system includes: a filter, an inlet pressure sensor, an outlet pressure sensor, a pump front switch valve, a one-way valve, a flushing pump, a sewage switch valve, and an outlet switch valve; the filter includes: a cylinder and a filter element located in the cylinder, the cylinder includes: an inlet and an outlet, and a sewage outlet located between the inlet and the outlet; the one-way valve is arranged at the inlet, and after being connected to the filter in sequence, is connected in parallel with the pump front switch valve and the flushing pump connected in sequence; the pump front switch valve is close to the one-way valve; the inlet pressure sensor is arranged at one end of the filtration system close to the refrigeration system; the outlet switch valve and the outlet pressure sensor are both arranged at one end of the filtration system close to the cooling system; the sewage switch valve is connected to the sewage outlet; the sensor, the flushing pump and all valves are electrically connected to the controller.

2. The cooling device according to claim 1, characterized in that The flushing pump comprises a high-lift flushing pump.

3. The cooling device according to claim 1 or 2, characterized in that: When the flushing pump is turned on: Flow rate greater than or equal to 0.5m 3 / h; and / or, the lift is greater than or equal to 30m; and / or, the pressure of the sewage switch valve is greater than atmospheric pressure, and the pressure difference with atmospheric pressure is greater than or equal to 100kPa.

4. The cooling device according to claim 3, characterized in that When the flushing pump is turned on: the flow rate is less than or equal to 2m 3 / h; and / or, the pressure difference is less than or equal to 300kPa.

5. A method for controlling a cooling device, characterized in that: The cooling device according to any one of claims 1 to 4; the method comprising: When the one-way valve and the outlet switch valve are both in the open state, the pump front switch valve, the sewage switch valve and the flushing pump are all in the closed state, and the pressure difference between the inlet and the outlet is greater than or equal to the preset pressure, the refrigeration system is controlled to be closed; After the refrigeration system is shut down for a first preset time, the cooling system and the outlet switch valve are controlled to be closed, and the pump front switch valve and the sewage switch valve are controlled to be opened; After the pump front switch valve and the sewage switch valve are both opened for the second preset time, the flushing pump is controlled to start opening. During the opening process, the flushing pump extracts medium from the medium supply system, and the medium enters the cylinder from the outlet of the cylinder, flushes the filter element, and is discharged from the sewage outlet.

6. The control method of the cooling device according to claim 5, characterized in that: After the flushing pump starts to be turned on, the flushing pump is controlled to be turned on for a third preset time and then turned off for a fourth preset time, thereby cyclically controlling the flushing pump to work.

7. The control method of the cooling device according to claim 5, characterized in that: Also includes: After the flushing pump starts to be turned on for a fifth preset time, the flushing pump, the pump front switch valve and the sewage switch valve are all controlled to be closed, and the outlet switch valve is controlled to be restored to open; After the outlet switch valve is reopened for a sixth preset time period, controlling the cooling system to reopen; After the cooling system is restored to operation for a seventh preset time period, the refrigeration system is controlled to be restored to operation.

8. The control method of the cooling device according to claim 7, characterized in that: The cooling device further comprises: a display screen; Before the pump front switch valve is opened, the method further includes: prompting on the display screen to start cleaning the filter element; and / or, After the flushing pump is turned off, the method further includes: prompting on the display screen that the cleaning of the filter element is finished.

9. The control method of the cooling device according to claim 5, characterized in that: The preset pressure is 0.2Mpa; The first preset duration is 3 seconds to 15 seconds; The second preset time length is 1 second to 10 seconds.

10. The control method of the cooling device according to claim 6, characterized in that: The third preset time length and the fourth preset time length are both 1 second to 10 seconds.

11. The control method of the cooling device according to claim 7, characterized in that: The fifth preset duration is 0.5 minutes to 5 minutes; The sixth preset time length and the seventh preset time length are both 5 seconds to 10 seconds.

12. A readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the control method for the cooling device according to any one of claims 5 to 11.

13. A computer program product, characterized in that The device comprises instructions, which, when executed by a processor in an electronic device, cause the electronic device to execute the control method for the cooling device according to any one of claims 5 to 11.

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