Equipment cooling method, cooling device and controller

Abstract

The invention provides an equipment cooling method, a cooling device and a controller. The method is applied to target equipment, a heat dissipation outlet is formed in the target equipment, an air collecting cover is arranged at the heat dissipation outlet and used for collecting hot air flowing out of the heat dissipation outlet, the air collecting cover is connected with a cooling system through a first conveying pipeline, and the cooling system communicates with a closed space where the target equipment is located through a second conveying pipeline. The method comprises the steps that hot air collected by an air collecting cover is introduced into a cooling system through a first conveying pipeline; the introduced hot air is cooled through a cooling system, and cold air is obtained; and cold air is introduced into the closed space through the second conveying pipeline so as to cool the target equipment. According to the method, the cooling system and the target equipment are arranged in a scattered mode, so that the cooling system does not need to consider the occupied area and the influence on the target equipment when the cooling system and the target equipment are located in the same room, the cooling cost of the equipment can be reduced, and the cooling system can support richer cooling functions.

Description

Technical Field

[0001] The present application relates to the field of temperature control technology, and in particular to a device cooling method, a cooling device and a controller. Background Art

[0002] During the operation of high-voltage power equipment, its failure rate increases exponentially with the increase of temperature, and its service life decreases exponentially with the increase of temperature. In order to ensure the normal operation of high-voltage power equipment, it is necessary to take away the heat generated during operation and provide a good operating environment for it, which has become a key point restricting the stable operation of high-voltage power equipment.

[0003] In the related art, the air-conditioning closed cooling method is usually adopted, which provides a fixed room for high-voltage power equipment, calculates the air-conditioning cooling capacity according to the heat generation of the high-voltage power equipment and the room area, and then equips a certain number of air conditioners to cool the indoor space. However, the air-conditioning closed cooling method has too high operating costs and poor practicality. Summary of the invention

[0004] The present application provides a device cooling method, a cooling device and a controller, which can not only effectively reduce the equipment cooling cost, but also enable the cooling system to support richer cooling functions and achieve better cooling effects.

[0005] In a first aspect, the present application provides a device cooling method, which is applied to a target device, wherein a heat dissipation outlet is provided on the target device, and an air collecting hood is provided at the heat dissipation outlet, wherein the air collecting hood is used to collect hot air flowing out of the heat dissipation outlet, and the air collecting hood is connected to a cooling system through a first transmission pipeline, and the cooling system is connected to a closed space where the target device is located through a second transmission pipeline; the method comprises:

[0006] Introducing the hot air collected by the air collecting hood into the cooling system through the first transmission pipeline;

[0007] The introduced hot air is cooled by the cooling system to obtain cold air;

[0008] The cold air is introduced into the closed space through the second transmission pipeline to cool the target device.

[0009] Optionally, the cooling system includes a cooler, in which a first refrigerant flows; and cooling the introduced hot air through the cooling system includes:

[0010] Acquire a first temperature in the closed space where the target device is located;

[0011] When the first temperature is higher than a first temperature threshold and not higher than a second temperature threshold, the cooler is controlled to operate so as to cool the hot air by using the first refrigerant.

[0012] Optionally, controlling the cooler to operate includes:

[0013] Acquire a second temperature of the hot air at the heat dissipation outlet and a third temperature of the cold air at the cooling system outlet;

[0014] determining a first opening of a valve for controlling a flow rate of the first refrigerant according to the second temperature and the third temperature;

[0015] The operation of the cooler is controlled according to the first opening degree.

[0016] Optionally, determining a first opening of a valve for controlling the flow of the first refrigerant according to the second temperature and the third temperature includes:

[0017] determining a difference between the second temperature and the third temperature;

[0018] Based on the corresponding relationship between the preset difference between the temperature of the hot air and the temperature of the cold air and the opening of the valve, the first opening of the valve is determined according to the difference.

[0019] Optionally, controlling the cooler to operate includes:

[0020] Acquiring a fourth temperature of the first refrigerant at an inlet of the cooler;

[0021] Based on a preset correspondence between the first refrigerant temperature and the valve opening, determining a second opening of the valve for controlling the flow of the first refrigerant according to the fourth temperature;

[0022] The operation of the cooler is controlled according to the second opening degree.

[0023] Optionally, the cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; after controlling the operation of the cooler, the method further includes:

[0024] When the maximum supply amount of the flow rate of the first refrigerant is lower than a preset supply amount, the compressor, the refrigeration pipeline and the evaporator are controlled to operate so as to cool the hot air through the second refrigerant.

[0025] Optionally, the cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; and cooling the introduced hot air through the cooling system includes:

[0026] When the first temperature is higher than the second temperature threshold, the cooler, the compressor, the refrigeration pipeline, and the evaporator are controlled to operate so as to cool the hot air by using the first refrigerant and the second refrigerant.

[0027] Optionally, there are multiple compressors; and controlling the operation of the cooler, the compressor, the refrigeration pipeline, and the evaporator includes:

[0028] Determine a target interval where the first temperature is located among a plurality of preset temperature intervals;

[0029] determining at least one compressor corresponding to the target interval;

[0030] The operation of the cooler, the at least one compressor, the refrigeration circuit and the evaporator are controlled.

[0031] Optionally, after the cold air is introduced into the heat dissipation outlet through the transmission pipeline, the method further comprises:

[0032] If the target device is shut down, the cooling system is controlled to shut down after a preset time interval.

[0033] In a second aspect, the present application provides a cooling device, including an air collecting hood, a first transmission pipeline, a second transmission pipeline, and a cooling system, wherein the air collecting hood is arranged at the heat dissipation outlet of the target device to be cooled, the air collecting hood is connected to the cooling system through the first transmission pipeline, and the cooling system is connected to the closed space where the target device is located through the second transmission pipeline; the cooling system includes a controller, and the controller is used to control the operation of the cooling device;

[0034] The wind collecting hood is used to collect the hot air at the heat dissipation outlet; the first transmission pipeline is used to transmit the hot air collected by the wind collecting hood to the cooling system;

[0035] The cooling system is used to cool the hot air input from the first transmission pipeline to obtain cold air;

[0036] The second transmission pipeline is used to transmit the cold air output by the cooling system to the closed space to cool the target device.

[0037] In a second aspect, the present application provides a controller for controlling a cooling process of a target device, wherein a heat dissipation outlet is provided on the target device, and an air collecting hood is provided at the heat dissipation outlet, wherein the air collecting hood is used to collect hot air flowing out of the heat dissipation outlet, and the air collecting hood is connected to a cooling system through a first transmission pipeline, and the cooling system is connected to a closed space where the target device is located through a second transmission pipeline, and the controller includes:

[0038] a first introduction module, used for introducing the hot air collected by the wind collecting hood into the cooling system through the first transmission pipeline;

[0039] A cooling module, used for cooling the introduced hot air through the cooling system to obtain cold air;

[0040] The second introduction module is used to introduce the cold air into the closed space through the second transmission pipeline to cool the target device.

[0041] Optionally, the cooling system includes a cooler, in which a first refrigerant flows; and the temperature reduction module includes:

[0042] A first acquisition submodule, used to acquire a first temperature in the closed space where the target device is located;

[0043] The first control submodule is used to control the operation of the cooler to cool the hot air by using the first refrigerant when the first temperature is higher than a first temperature threshold and not higher than a second temperature threshold.

[0044] Optionally, the first control submodule includes:

[0045] A second acquisition submodule, used to acquire a second temperature of the hot air at the heat dissipation outlet and a third temperature of the cold air at the cooling system outlet;

[0046] a first determining submodule, configured to determine a first opening of a valve for controlling a flow rate of the first refrigerant according to the second temperature and the third temperature;

[0047] The second control submodule is used to control the operation of the cooler according to the first opening degree.

[0048] Optionally, the first determining submodule includes:

[0049] A second determining submodule, configured to determine a difference between the second temperature and the third temperature;

[0050] The third determination submodule is used to determine the first opening of the valve based on the corresponding relationship between the preset difference between the temperature of the hot air and the temperature of the cold air and the opening of the valve according to the difference.

[0051] Optionally, the first control submodule includes:

[0052] A third acquisition submodule, used to acquire a fourth temperature of the first refrigerant at the inlet of the cooler;

[0053] a fourth determination submodule, configured to determine, based on a preset correspondence between the first refrigerant temperature and the valve opening, a second opening of the valve for controlling the flow of the first refrigerant according to the fourth temperature;

[0054] The third control submodule is used to control the operation of the cooler according to the second opening degree.

[0055] Optionally, the cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; the controller further includes:

[0056] The fourth control submodule is used to control the operation of the compressor, the refrigeration pipeline and the evaporator to cool the hot air through the second refrigerant when the maximum supply amount of the flow of the first refrigerant is lower than the preset supply amount.

[0057] Optionally, the cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; the temperature reduction module includes:

[0058] The fifth control submodule is used to control the operation of the cooler, the compressor, the refrigeration pipeline and the evaporator when the first temperature is higher than the second temperature threshold, so as to cool the hot air through the first refrigerant and the second refrigerant.

[0059] Optionally, there are multiple compressors; the fifth control submodule includes:

[0060] a fifth determination submodule, configured to determine a target interval in which the first temperature is located among a plurality of preset temperature intervals;

[0061] A sixth determination submodule, configured to determine at least one compressor corresponding to the target interval;

[0062] The sixth control submodule is used to control the operation of the cooler, the at least one compressor, the refrigeration pipeline and the evaporator.

[0063] Optionally, the controller further includes:

[0064] The seventh control submodule is used to control the cooling system to shut down after a preset time interval if the target device shuts down.

[0065] In the present application, for the target device to be cooled, by setting an air collecting hood at its heat dissipation outlet, the hot air flowing out of the target device can be collected, by setting a first transmission pipeline, the collected hot air can be transmitted to a designated location for cooling, and by setting a second transmission pipeline, the cooled cold air can be returned to the enclosed space where the target device is located. For example, when the target device is located in a closed room, the hot air can be introduced into an outdoor cooling system for processing through the air collecting hood, the first transmission pipeline, and the second transmission pipeline. The present application disperses the cooling system and the target device, so that the cooling system does not need to consider the floor space and the impact on the target device when it is in the same room as the target device. It can not only reduce the cost of cooling the equipment, but also enable the cooling system to be equipped with more abundant cooling functions to achieve better cooling effects, and also provide greater convenience for the cooling of the target device. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0067] Figure 1 This is a flow chart of a device cooling method shown in one embodiment of the present application;

[0068] Figure 2 It is a structural schematic diagram of a cooling device shown in one embodiment of the present application;

[0069] Figure 3 is a schematic diagram of an air collecting hood shown in an embodiment of the present application;

[0070] Figure 4 is a schematic diagram of the internal structure of a cooling system shown in one embodiment of the present application;

[0071] Among them, 1-wind collecting hood, 2-first transmission pipeline, 3-induced draft fan, 4-cooling system, 5-pump room, 6-controller, 7-compressor, 8-evaporator, 9-cooling water inlet, 10-cooling water outlet, 11-cooler, 12-air outlet, 13-second transmission pipeline, 14-heat dissipation outlet. DETAILED DESCRIPTION

[0072] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0073] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0074] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] The present application provides a device cooling method for cooling a target device. The method implementation process is as follows: Figure 1 The method of the present application is executed by a controller 6 in a cooling device, the structure of which is as shown in FIG. Figure 2 As shown. Among them, Figure 1 This is a flow chart of a device cooling method shown in one embodiment of the present application. Figure 2 It is a structural schematic diagram of a cooling device shown in an embodiment of the present application.

[0076] The target equipment in this application is mainly high-voltage power equipment, such as a high-voltage inverter, but it can also be other types of equipment, which can be designed according to actual needs.

[0077] Reference Figure 2 The cooling device of the present application mainly includes an air collecting hood 1, a first transmission pipeline 2, an induced draft fan 3, a cooling system 4 and a second transmission pipeline 13.

[0078] The wind collecting hood 1 is arranged at the heat dissipation outlet 14 on the target device. For example, for a high-voltage frequency converter, the heat dissipation outlet 14 on the top of the cabinet has a built-in heat dissipation fan, and the heat dissipation fan helps to dissipate the heat inside the high-voltage frequency converter. The heat dissipation outlet 14, including the heat dissipation fan, is covered by the wind collecting hood 1, and the heat dissipation outlet 14 is enclosed in a nearly enclosed space, which helps the wind collecting hood 1 to better collect the hot air flowing out of the heat dissipation outlet 14.

[0079] Figure 3FIG. 1 is a schematic diagram of the installation position of a wind collecting hood shown in an embodiment of the present application. Figure 3 In the figure, the black bold box indicates the installation position of the air collecting cover 1, and the inside of the white rectangular box is the heat dissipation outlet 14. When the air collecting cover 1 is installed, the entire white rectangular box needs to be wrapped inside to form a nearly closed space.

[0080] In actual implementation, the heat dissipation outlet 14 may not be located at the top. In this case, it is only necessary to set the wind collecting cover 1 at the heat dissipation outlet 14 to achieve the effect of collecting the hot air flowing out of the heat dissipation outlet 14 .

[0081] One end of the first transmission pipeline 2 is connected to the air collecting hood 1, and the other end is connected to the induced draft fan 3. The induced draft fan 3 and the cooling system 4 are integrally located in a closed box. Figure 2 As shown. The induced draft fan 3 is arranged close to the top of the cooling system 4. The induced draft fan 3 is a device that generates negative pressure by rotating the impeller, and then extracts hot air from the air collecting hood 1. In the present application, the induced draft fan 3 guides the hot air in the air collecting hood 1 to flow into the cavity of the cooling system 4 through the first transmission pipe 2 by rotating the impeller.

[0082] The cooling system 4 is connected to the closed space where the target device is located through the second transmission pipeline 13. The closed space can be, for example, a closed room or other types of closed structures, which can be specifically configured according to actual needs.

[0083] Reference Figure 1 The cooling method of the present application may specifically include the following steps:

[0084] Step S11: The hot air collected by the air collecting hood 1 is introduced into the cooling system 4 through the first transmission pipeline 2 .

[0085] In this embodiment, as long as the target device is in working state, the entire cooling device is in working state.

[0086] When the target device is working, the heat generated from the target device continuously flows out of the heat dissipation outlet 14 under the action of the cooling fan and gathers in the air collecting hood 1. Under the action of the induced draft fan 3, the hot air in the air collecting hood 1 flows into the cavity of the cooling system 4 through the first transmission pipe 2.

[0087] For example, when the target device is a high-voltage inverter, the function of the wind collecting cover 1 is to collect the heat generated during the operation of the phase-shifting transformer and the power unit group of the high-voltage inverter.

[0088] Step S12: Cooling the introduced hot air through the cooling system 4 to obtain cold air.

[0089] The cooling system 4 is provided with a variety of cooling elements, through which the incoming hot air can be quickly cooled to obtain cold air. In addition to the cooling elements provided in the cooling system 4, cooling elements can also be provided in the enclosed space where the target device is located, and can be specifically provided according to actual needs.

[0090] Step S13: introducing cold air into the closed space where the target device is located through the second transmission pipeline 13 to cool the target device.

[0091] After obtaining the cold air, the cold air returns to the closed space where the target device is located through the second transmission pipeline 13, thereby cooling the target device. In this embodiment, the second transmission pipeline 13 can also be connected to the closed space where other devices that need to be cooled are located, so as to achieve cooling of the target device while cooling other devices that need to be cooled (that is, it can achieve cooling of multiple target devices at the same time). For example, the high-voltage frequency converter X to be cooled is located in the first room, and the high-voltage frequency converter Y to be cooled is located in the second room. The cooling device X is a cooling device designed for the high-voltage frequency converter X, and the cooling device Y is a cooling device designed for the high-voltage frequency converter Y. Then, the second transmission pipeline 13 in the cooling device X can be connected to the second room in addition to the first room, and the high-voltage frequency converter X and the high-voltage frequency converter Y can be cooled at the same time. Similarly, the second transmission pipeline 13 in the cooling device Y can be connected to the first room in addition to the second room, and the high-voltage frequency converter X and the high-voltage frequency converter Y can be cooled at the same time. Therefore, the same cooling device can be used to cool down a plurality of different devices to be cooled at the same time, which has good practicality.

[0092] In this embodiment, for the target device to be cooled, by setting an air collecting hood 1 at its heat dissipation outlet 14, the hot air flowing out of the target device can be collected, by setting a first transmission pipe 2, the collected hot air can be transmitted to a designated location for cooling, and by setting a second transmission pipe 13, the cooled cold air can be returned to the enclosed space where the target device is located. For example, when the target device is located indoors, the hot air can be introduced into the outdoor cooling system 4 for processing through the air collecting hood 1, the first transmission pipe 2, and the second transmission pipe 13. The method of the present application disperses the cooling system 4 and the target device, so that the cooling system 4 does not need to consider the floor space and the impact on the target device when it is in the same room as the target device, and can therefore support more abundant cooling functions, achieve better cooling effects, and provide greater convenience for the cooling of the target device.

[0093] In combination with the above embodiments, in one implementation manner, the cooling system 4 includes a cooler 11 , and a first refrigerant flows in the cooler 11 .

[0094] In this embodiment, the cooler 11 may be a surface cooler. The function of the surface cooler is to reduce the temperature of the hot air by allowing industrial circulating water to flow in the surface cooler tube cluster and heat exchange between the heat dissipating fins and the hot air.

[0095] Wherein, the first refrigerant is cooling water.

[0096] On this basis, in step S12, cooling the introduced hot air by the cooling system 4 may include:

[0097] Step S121: obtaining a first temperature in a closed space where the target device is located;

[0098] Step S122: When the first temperature is higher than the first temperature threshold and not higher than the second temperature threshold, the cooler 11 is controlled to operate so as to cool down the hot air through the first refrigerant. Specifically, the flow of the first refrigerant can be achieved by controlling the valve corresponding to the first refrigerant.

[0099] Among them, the first temperature threshold and the second temperature threshold can be set based on experience. Generally, when the first temperature is lower than the first temperature threshold, it means that the temperature in the enclosed space (such as a room) where the target device is located is lower, that is, the heat generated by the target device is less, and the target device does not need to be cooled down at this time (the valve corresponding to the first refrigerant is fully closed at this time). When the first temperature is between the first temperature threshold and the second temperature threshold, it means that the target device generates more heat, but the target device can be cooled down only by the cooler 11.

[0100] In a specific implementation, if the first temperature is between the first temperature threshold and the second temperature threshold, the cooler 11 can be controlled to operate so that cooling water in the cooler 11 circulates to take away heat from the hot air and obtain cold air for cooling the target device.

[0101] In this embodiment, a first temperature sensor may be installed in the closed space where the target device is located, and the first temperature sensor is in communication with the controller 6. The first temperature sensor is used to collect the temperature in the closed space in real time and transmit the collected temperature to the controller 6.

[0102] In this embodiment, the cooling system 4 is started to cool the hot air only when the temperature in the enclosed space where the target device is located is greater than the first temperature threshold. This can avoid the energy consumption caused by the cooling system 4 operating for a long time when it is not necessary to cool the target device, which is beneficial to saving energy.

[0103] In combination with the above embodiments, in one implementation, in step S122, controlling the cooler 11 to operate includes:

[0104] Obtaining a second temperature of the hot air at the heat dissipation outlet 14 and a third temperature of the cold air at the outlet of the cooling system 4;

[0105] determining a first opening of a valve for controlling a flow rate of a first refrigerant according to the second temperature and the third temperature;

[0106] According to the first opening degree, the operation of the cooler 11 is controlled, and specifically, the flow of the first refrigerant can be achieved by controlling the valve corresponding to the first refrigerant.

[0107] In this embodiment, a second temperature sensor may be pre-installed at the heat dissipation outlet 14, and a third temperature sensor may be pre-installed at the outlet of the cooling system 4, and the second temperature sensor and the third temperature sensor are respectively connected to the controller 6 for communication. The second temperature sensor is used to collect the second temperature of the hot air at the heat dissipation outlet 14 in real time, and transmit the collected second temperature to the controller 6 in real time. The third temperature sensor is used to collect the third temperature of the cold air at the outlet of the cooling system 4 in real time, and transmit the collected third temperature to the controller 6 in real time.

[0108] Next, the controller 6 comprehensively considers the second temperature and the third temperature to obtain the opening degree of the valve for adjusting the flow rate of the first refrigerant, that is, the first opening degree.

[0109] In one embodiment, determining a first opening of a valve for controlling a flow rate of a first refrigerant according to the second temperature and the third temperature may include:

[0110] determining a difference between the second temperature and the third temperature;

[0111] Based on the corresponding relationship between the preset difference between the temperature of the hot air and the temperature of the cold air and the opening of the valve, the first opening of the valve is determined according to the difference.

[0112] In this embodiment, if the difference between the second temperature and the third temperature is small, the first opening can be determined as a larger value to ensure that the hot air can be cooled smoothly. If the difference between the second temperature and the third temperature is large, the first opening can be determined as a smaller value to ensure that the hot air can be cooled smoothly while saving resources. In other words, the difference between the second temperature and the third temperature is inversely proportional to the first opening of the valve. The smaller the difference, the larger the first opening, and the larger the difference, the smaller the first opening.

[0113] The corresponding relationship between the difference between the second temperature and the third temperature and the opening of the valve can be determined in advance based on test data, and this embodiment does not specifically limit the method for obtaining the corresponding relationship.

[0114] Therefore, after the difference between the second temperature and the third temperature is obtained, the first opening matching the difference can be determined directly according to the preset corresponding relationship.

[0115] In this embodiment, a method for adjusting the flow rate of cooling water in the cooler 11 is provided, i.e., determining the first opening of the valve according to the difference between the second temperature and the third temperature. This can not only ensure that there is a sufficient flow rate of cooling water to effectively cool the hot air, but also avoid excessive waste of cooling water and save resources.

[0116] In combination with the above embodiments, in one implementation, in step S122, controlling the cooler 11 to operate includes:

[0117] Obtaining a fourth temperature of the first refrigerant at the inlet of the cooler 11;

[0118] Based on a preset correspondence between the first refrigerant temperature and the valve opening, determining a second opening of the valve for controlling the flow of the first refrigerant according to the fourth temperature;

[0119] The operation of the cooler 11 is controlled according to the second opening degree.

[0120] In this embodiment, cooling water is provided by the water pump room 5. In extreme weather, such as summer and winter, the temperature of the cooling water provided by the water pump room 5 is different. These differences will also affect the cooling effect of the cooling system 4 on the hot air. Therefore, in this embodiment, a fourth temperature sensor can be installed at the entrance of the cooler 11 in advance, and the fourth temperature sensor is connected to the controller 6 in communication. The fourth temperature sensor is used to detect the fourth temperature of the cooling water before it flows into the cooler 11, and transmit the fourth temperature to the controller 6.

[0121] The controller 6 pre-stores the corresponding relationship between the temperature of the cooling water and the second opening of the valve. After the fourth temperature is obtained, the second opening of the valve can be directly obtained according to the corresponding relationship.

[0122] Generally, the higher the fourth temperature of the cooling water, the larger the valve opening is, to ensure that there is enough cooling water to cool the hot air smoothly. The lower the fourth temperature of the cooling water, the smaller the valve opening is, to ensure that the hot air can be cooled smoothly while saving resources. In other words, the higher the fourth temperature of the cooling water is, the more proportional the valve opening is.

[0123] This embodiment provides another method for adjusting the flow rate of cooling water in the cooler 11, that is, determining the second opening of the valve according to the fourth temperature of the cooling water. This can not only ensure that there is a sufficient flow rate of cooling water to effectively cool the hot air, but also avoid excessive waste of cooling water and save resources.

[0124] In combination with the above embodiments, in one implementation, the cooling system 4 of the present application further includes a compressor 7, a refrigeration pipeline and an evaporator 8, and a second refrigerant flows in the refrigeration pipeline. Figure 4As shown, a complete circuit is formed between the compressor 7, the refrigeration pipeline and the evaporator 8. The refrigerant forms a high-temperature and high-pressure refrigerant at the compressor 7, and then flows through the evaporator 8, evaporates and absorbs heat at the evaporator 8, thereby taking away the heat in the hot air. Figure 4 It is a schematic diagram of the internal structure of a cooling system shown in one embodiment of the present application. Figure 4 FIG. 4 illustrates a situation where the controller 6 is located in the cooling system 4. In actual implementation, the position of the controller 6 in the cooling device can be set according to actual needs.

[0125] exist Figure 4 In the embodiment, the air outlet 12 is the outlet of the cold air. One end of the second transmission pipeline 13 is connected to the air outlet 12, and the other end is connected to the closed space.

[0126] Accordingly, after controlling the cooler 11 to operate, the method of the present application may further include:

[0127] When the maximum supply amount of the flow rate of the first refrigerant is lower than the preset supply amount, the compressor 7, the refrigeration pipeline and the evaporator 8 are controlled to operate so as to cool the hot air by the second refrigerant.

[0128] In specific implementation, if the maximum flow rate of cooling water that can be provided by the pump room 5 is always lower than the preset supply, it means that the cooling water flow rate is insufficient. In this case, on the one hand, an early warning prompt message can be output to prompt the staff to deal with it in time, and on the other hand, a backup refrigeration plan can be enabled, that is, a plan for cooling by the second refrigerant.

[0129] Among them, Figure 4 In the embodiment, cooling water enters the cooling system through the cooling water inlet 9 and flows out of the cooling system through the cooling water outlet 10.

[0130] Wherein, the second refrigerant is a refrigerant.

[0131] In this embodiment, a flow detection device can be pre-installed at any position before the cooling water enters the cooling system 4, and the flow detection device detects the flow of the cooling water. The flow detection device is connected to the controller 6 for communication, and the detection data can be transmitted to the controller 6 in real time. Therefore, once it is detected that the maximum supply amount of the flow of the first refrigerant is lower than the preset supply amount, the controller 6 controls the compressor 7, the refrigeration pipeline and the evaporator 8 to operate, so as to cool the hot air through the second refrigerant.

[0132] In this embodiment, after the compressor 7, the refrigeration pipeline and the evaporator 8 are controlled to operate, the cooler 11 can continue to operate, or the cooler 11 can be stopped according to actual needs. In actual implementation, the operation strategy of each device can be comprehensively considered from the perspective of energy saving.

[0133] In this embodiment, cooling water is used mainly for cooling and cooling, and refrigerant is used as a supplementary cooling and cooling. When the cooling effect of cooling water is insufficient, the refrigerant cooling and cooling scheme can be added to ensure that the hot air can be effectively cooled, thereby ensuring that the target equipment can be effectively cooled.

[0134] In combination with the above embodiments, in one implementation, cooling the introduced hot air by the cooling system 4 may include:

[0135] When the first temperature is higher than the second temperature threshold, the cooler 11, the compressor 7, the refrigeration pipeline and the evaporator 8 are controlled to operate so as to cool the hot air by the first refrigerant and the second refrigerant.

[0136] In this embodiment, if the first temperature in the closed space is higher than the second temperature threshold, it means that the current temperature requirement of the target device is extremely high. At this time, the cooling water circuit and the refrigerant circuit can be controlled to work at the same time, that is, the cooler 11, the compressor 7, the refrigeration pipeline and the evaporator 8 can be controlled to operate at the same time, and the hot air can be cooled by the first refrigerant and the second refrigerant at the same time, so as to meet the heat dissipation requirement of the target device.

[0137] In this embodiment, there are multiple compressors 7, but not all compressors 7 need to work at the same time. For example, when the heat dissipation demand of the target device is low, only one compressor 7 can be operated, and when the heat dissipation demand of the target device is high, all compressors 7 can be controlled to work. Therefore, which compressors 7 need to work can be determined according to the temperature range of the temperature in the closed space.

[0138] Therefore, controlling the operation of the cooler 11, the compressor 7, the refrigeration pipeline and the evaporator 8 includes:

[0139] Determine a target interval where the first temperature is located among a plurality of preset temperature intervals;

[0140] Determine at least one compressor 7 corresponding to the target interval;

[0141] The operation of the cooler 11 , at least one compressor 7 , the refrigeration pipeline and the evaporator 8 are controlled.

[0142] Among them, multiple preset temperature intervals are arranged in order from low to high temperature. If the first temperature is in a preset temperature zone with a lower temperature, then the number of compressors 7 required to work is smaller, avoiding wasting too many resources. If the first temperature is in a preset temperature zone with a higher temperature, then the number of compressors 7 required to work is larger, thereby ensuring effective cooling of the hot air.

[0143] Which compressors 7 correspond to each preset temperature interval in the plurality of preset temperature intervals can be set according to actual needs.

[0144] In specific implementation, if multiple compressors 7 are required to work, they can be started in sequence. That is, if the cooling effect does not meet the expected requirements (for example, whether the first temperature drops by a preset amplitude) after the first compressor 7 is started and works for a set period of time, then the second compressor 7 is started, the cooling effect is checked, and then the third compressor 7 is started, and so on.

[0145] In combination with the above embodiments, in one implementation, after the cold air is introduced into the heat dissipation outlet 14 through the transmission pipeline 2, the method of the present application may further include:

[0146] If the target device is shut down, the cooling system 4 is controlled to shut down after a preset time interval.

[0147] After the target device suddenly shuts down, since the internal heat is not really dissipated, the target device needs to continue to be cooled, so the cooling system 4 needs to delay the operation for a preset time and shut down after the preset time is reached.

[0148] The preset duration can be set according to actual needs, for example, the maximum duration can be set to 5 minutes.

[0149] In this embodiment, if cooling water cooling and refrigerant cooling still cannot meet the heat dissipation requirements of the target device, the first transmission pipe 2 can be connected to the outdoors, and the hot air generated by the air collecting hood 1 can be directly discharged to the outdoors, thereby preferentially meeting the heat dissipation requirements of the target device.

[0150] In combination with the above embodiments, in one implementation, the present application can also detect the quality of the refrigerant and detect whether the refrigerant is leaking.

[0151] Among them, the method for detecting the quality of the refrigerant includes:

[0152] (1) Pressure gauge test: Connect the pressure gauge to the cooling system 4 (the specific operation is set according to actual needs), measure the pressure value of the refrigerant, and compare it with the corresponding saturation pressure value at the ambient temperature. If the measured value is significantly lower than the saturation pressure value, it indicates that the refrigerant quality is poor or there is a leak in the system.

[0153] (2) Purity meter detection: The refrigerant purity meter can be used to accurately detect the content of each component in the refrigerant, such as whether the content of R12 or R134a meets the standard, and whether impurities such as air and hydrocarbons exceed the standard.

[0154] Methods for detecting refrigerant leaks include:

[0155] (1) Electronic leak detector detection method: Use the probe of the electronic leak detector to perform a mobile scan on the cooling system 4 (the specific operation is set according to actual needs). When the electronic leak detector sounds an alarm, it indicates that there is a refrigerant leak.

[0156] (2) Gas pressure difference detection method: Detection is performed using the gas pressure difference inside and outside the cooling system 4 (the specific operation is set according to actual needs), the pressure difference signal is amplified by the sensor, and the leak detection result is expressed in the form of digital, sound or electronic signals.

[0157] When it is detected that the quality of the refrigerant is poor or there is a refrigerant leak, the controller 6 outputs an early warning prompt to prompt the staff to handle the refrigerant in time.

[0158] Of course, other methods for detecting the quality of the refrigerant and detecting whether the refrigerant is leaking may also be used according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0159] The present application provides a method for cooling equipment. During the operation of the target equipment, cooling water is used as the main cooling source and refrigerant is used as the backup cooling source, which can achieve the purpose of energy saving and consumption reduction and reduce operating costs.

[0160] The present application can realize automatic switching of dual cooling sources, and can improve the reliability of the operation of the cooling system 4. When it is detected that the indoor temperature cannot be reduced to the required value, the compressor 7 is controlled to load automatically, and when it is detected that the cooling water is insufficient, the compressor 7 is controlled to load automatically. When the indoor temperature and cooling water return to normal, the compressor 7 is controlled to automatically reduce the load, thereby avoiding the phenomenon that the cooling effect of the cooling system 4 is poor due to cooling water problems during the operation of the target device (such as a high-voltage inverter), causing the target device to shut down, and the stability of the operation of the cooling system 4 can be improved.

[0161] It should be noted that, for the method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present application are not limited by the described order of actions, because according to the embodiments of the present application, 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 the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present application.

[0162] Based on the same inventive concept, an embodiment of the present application provides a cooling device, including an air collecting hood, a first transmission pipeline, a second transmission pipeline and a cooling system, wherein the air collecting hood is arranged at the heat dissipation outlet of the target device to be cooled, the air collecting hood is connected to the cooling system through the first transmission pipeline, and the cooling system is connected to the closed space where the target device is located through the second transmission pipeline; the cooling system includes a controller, and the controller is used to control the operation of the cooling device;

[0163] The wind collecting hood is used to collect hot air at the heat dissipation outlet;

[0164] The first transmission pipeline is used to transmit the hot air collected by the wind collecting hood to the cooling system;

[0165] The cooling system is used to cool the hot air input from the first transmission pipeline to obtain cold air;

[0166] The second transmission pipeline is used to transmit the cold air output by the cooling system to the closed space to cool the target device.

[0167] For the description of the cooling device, please refer to the previous text, and this application will not elaborate on it here.

[0168] Based on the same inventive concept, an embodiment of the present application provides a controller for controlling a cooling process of a target device, wherein a heat dissipation outlet is provided on the target device, and an air collecting hood is provided at the heat dissipation outlet, wherein the air collecting hood is used to collect hot air flowing out of the heat dissipation outlet, and the air collecting hood is connected to a cooling system through a first transmission pipeline, and the cooling system is connected to a closed space where the target device is located through a second transmission pipeline, and the controller includes:

[0169] a first introduction module, used for introducing the hot air collected by the wind collecting hood into the cooling system through the first transmission pipeline;

[0170] A cooling module, used for cooling the introduced hot air through the cooling system to obtain cold air;

[0171] The second introduction module is used to introduce the cold air into the closed space through the second transmission pipeline to cool the target device.

[0172] Optionally, the cooling system includes a cooler, in which a first refrigerant flows; and the temperature reduction module includes:

[0173] A first acquisition submodule, used to acquire a first temperature in the closed space where the target device is located;

[0174] The first control submodule is used to control the operation of the cooler to cool the hot air by using the first refrigerant when the first temperature is higher than a first temperature threshold and not higher than a second temperature threshold.

[0175] Optionally, the first control submodule includes:

[0176] A second acquisition submodule, used to acquire a second temperature of the hot air at the heat dissipation outlet and a third temperature of the cold air at the cooling system outlet;

[0177] a first determining submodule, configured to determine a first opening of a valve for controlling a flow rate of the first refrigerant according to the second temperature and the third temperature;

[0178] The second control submodule is used to control the operation of the cooler according to the first opening degree.

[0179] Optionally, the first determining submodule includes:

[0180] A second determining submodule, configured to determine a difference between the second temperature and the third temperature;

[0181] The third determination submodule is used to determine the first opening of the valve based on the corresponding relationship between the preset difference between the temperature of the hot air and the temperature of the cold air and the opening of the valve according to the difference.

[0182] Optionally, the first control submodule includes:

[0183] A third acquisition submodule, used to acquire a fourth temperature of the first refrigerant at the inlet of the cooler;

[0184] a fourth determination submodule, configured to determine, based on a preset correspondence between the first refrigerant temperature and the valve opening, a second opening of the valve for controlling the flow of the first refrigerant according to the fourth temperature;

[0185] The third control submodule is used to control the operation of the cooler according to the second opening degree.

[0186] Optionally, the cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; the controller further includes:

[0187] The fourth control submodule is used to control the operation of the compressor, the refrigeration pipeline and the evaporator to cool the hot air through the second refrigerant when the maximum supply amount of the flow of the first refrigerant is lower than the preset supply amount.

[0188] Optionally, the cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; the temperature reduction module includes:

[0189] The fifth control submodule is used to control the operation of the cooler, the compressor, the refrigeration pipeline and the evaporator when the first temperature is higher than the second temperature threshold, so as to cool the hot air through the first refrigerant and the second refrigerant.

[0190] Optionally, there are multiple compressors; the fifth control submodule includes:

[0191] a fifth determination submodule, configured to determine a target interval in which the first temperature is located among a plurality of preset temperature intervals;

[0192] A sixth determination submodule, configured to determine at least one compressor corresponding to the target interval;

[0193] The sixth control submodule is used to control the operation of the cooler, the at least one compressor, the refrigeration pipeline and the evaporator.

[0194] Optionally, the controller further includes:

[0195] The seventh control submodule is used to control the cooling system to shut down after a preset time interval if the target device shuts down.

[0196] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0197] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0198] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0199] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for cooling equipment, characterized in that: Applied to a target device, the target device is provided with a heat dissipation outlet, the heat dissipation outlet is provided with an air collecting hood, the air collecting hood is used to collect hot air flowing out of the heat dissipation outlet, the air collecting hood is connected to a cooling system through a first transmission pipeline, the cooling system is connected to a closed space where the target device is located through a second transmission pipeline, the method includes: Introducing the hot air collected by the air collecting hood into the cooling system through the first transmission pipeline; The introduced hot air is cooled by the cooling system to obtain cold air; The cold air is introduced into the closed space through the second transmission pipeline to cool the target device.

2. The method according to claim 1, characterized in that The cooling system includes a cooler, in which a first refrigerant flows; the introduced hot air is cooled by the cooling system, including: Acquire a first temperature in the closed space where the target device is located; When the first temperature is higher than a first temperature threshold and not higher than a second temperature threshold, the cooler is controlled to operate so as to cool the hot air by using the first refrigerant.

3. The method according to claim 2, characterized in that The controlling the operation of the cooler comprises: Acquire a second temperature of the hot air at the heat dissipation outlet and a third temperature of the cold air at the cooling system outlet; determining a first opening of a valve for controlling a flow rate of the first refrigerant according to the second temperature and the third temperature; The operation of the cooler is controlled according to the first opening degree.

4. The method according to claim 3, characterized in that The step of determining a first opening of a valve for controlling a flow rate of the first refrigerant according to the second temperature and the third temperature includes: determining a difference between the second temperature and the third temperature; Based on the corresponding relationship between the preset difference between the temperature of the hot air and the temperature of the cold air and the opening of the valve, the first opening of the valve is determined according to the difference.

5. The method according to claim 2, characterized in that: The controlling the operation of the cooler comprises: Acquiring a fourth temperature of the first refrigerant at an inlet of the cooler; Based on a preset correspondence between the first refrigerant temperature and the valve opening, determining a second opening of the valve for controlling the flow of the first refrigerant according to the fourth temperature; The operation of the cooler is controlled according to the second opening degree.

6. The method according to claim 2, characterized in that The cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; After controlling the cooler to operate, the method further includes: When the maximum supply amount of the flow rate of the first refrigerant is lower than a preset supply amount, the compressor, the refrigeration pipeline and the evaporator are controlled to operate so as to cool the hot air through the second refrigerant.

7. The method according to claim 2, characterized in that The cooling system further includes a compressor, a refrigeration pipeline and an evaporator, and a second refrigerant flows in the refrigeration pipeline; the introduced hot air is cooled by the cooling system, including: When the first temperature is higher than the second temperature threshold, the cooler, the compressor, the refrigeration pipeline, and the evaporator are controlled to operate so as to cool the hot air by using the first refrigerant and the second refrigerant.

8. The method according to claim 7, characterized in that The number of the compressors is multiple; the controlling the operation of the cooler, the compressor, the refrigeration pipeline and the evaporator includes: Determine a target interval where the first temperature is located among a plurality of preset temperature intervals; determining at least one compressor corresponding to the target interval; The operation of the cooler, the at least one compressor, the refrigeration circuit and the evaporator are controlled.

9. A cooling device, characterized in that: The device comprises an air collecting hood, a first transmission pipeline, a second transmission pipeline and a cooling system, wherein the air collecting hood is arranged at the heat dissipation outlet of the target device to be cooled, the air collecting hood is connected to the cooling system through the first transmission pipeline, and the cooling system is connected to the closed space where the target device is located through the second transmission pipeline; the cooling system comprises a controller, and the controller is used to control the operation of the cooling device; The wind collecting hood is used to collect hot air at the heat dissipation outlet; The first transmission pipeline is used to transmit the hot air collected by the wind collecting hood to the cooling system; The cooling system is used to cool the hot air input from the first transmission pipeline to obtain cold air; The second transmission pipeline is used to transmit the cold air output by the cooling system to the closed space to cool the target device.

10. A controller, characterized in that: Used to control the cooling process of a target device, the target device is provided with a heat dissipation outlet, the heat dissipation outlet is provided with an air collecting hood, the air collecting hood is used to collect hot air flowing out of the heat dissipation outlet, the air collecting hood is connected to a cooling system through a first transmission pipeline, the cooling system is connected to a closed space where the target device is located through a second transmission pipeline, and the controller includes: a first introduction module, used for introducing the hot air collected by the wind collecting hood into the cooling system through the first transmission pipeline; A cooling module, used for cooling the introduced hot air through the cooling system to obtain cold air; The second introduction module is used to introduce the cold air into the closed space through the second transmission pipeline to cool the target device.

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