A thawing apparatus, method and system

Abstract

This application discloses a defrosting device, method, and system. By judging the engine coolant temperature, sensor temperature, and a preset temperature threshold, relevant solenoid valves are controlled. By changing the on / off state of a second solenoid valve and the direction of a reversing valve, a water pump is driven to form a small circulation path for heating the urea tank. Simultaneously, the first solenoid valve opens, introducing high-pressure air from the air compressor's storage tank into a vortex tube. A heat exchanger allows the hot end of the vortex tube to exchange heat with the coolant in the small circulation path of the urea tank, rapidly raising the coolant temperature and achieving rapid defrosting of the urea tank. The pressure in the storage tank is judged to match a preset pressure value to ensure the needs of other air compressors are met. This achieves rapid defrosting while reasonably controlling energy consumption.

Description

Technical Field

[0001] This application relates to the field of diesel engine aftertreatment SCR system control, specifically to a defrosting device, method, and system. Background Technology

[0002] Urea is a reactant used to treat diesel engine exhaust. Regulations require that urea be used within 70 minutes when the vehicle is in a cold region at -17°C. Therefore, rapid thawing of urea has a significant impact on the vehicle.

[0003] Existing technology introduces a portion of the engine coolant into the urea tank, utilizing engine heat to transfer heat to the coolant. Urea then defrosts through heat exchange between the coolant and urea, and the circulating flow of the dissolved urea further improves defrosting efficiency. However, when the vehicle is first started, the coolant temperature is low, resulting in a small temperature difference between the coolant and urea, leading to a prolonged defrosting time. Furthermore, the coolant flow rate is significantly affected by engine speed; at low engine speeds, the coolant flow rate is low, impacting the defrosting effect. While circulating the dissolved urea solution can accelerate defrosting, the small temperature difference limits the acceleration effect. Summary of the Invention

[0004] Therefore, this application provides a defrosting device, method, and system. When a defrosting requirement is determined, the second solenoid valve is switched on / off and the direction of the reversing valve is changed, and the water pump is driven to form a small circulation water path for heating the urea tank. At the same time, the first solenoid valve is opened to introduce high-pressure air from the air compressor's storage tank into the vortex tube. The heat exchanger is used to exchange heat between the hot end air of the vortex tube and the coolant in the small circulation of the urea tank, so that the temperature of the small circulation coolant rises rapidly, thereby achieving the purpose of rapid defrosting of the urea tank.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] According to a first aspect of the embodiments of this application, a defrosting device is provided, the defrosting device comprising: an air compressor, an air tank, a vortex tube, a heat exchanger, a box to be defrosted, a water pump, and an engine;

[0007] The air compressor, air tank and vortex tube are connected in sequence. A first solenoid valve is provided between the air tank and the vortex tube. The first solenoid valve is used to control the air flow rate entering the vortex tube.

[0008] The hot end of the vortex tube is connected to the heat exchanger, which is used to exchange heat between the internal hot air and the coolant.

[0009] A heat exchanger is installed on the first coolant line between the engine and the box to be thawed, and a second solenoid valve is installed on the coolant line between the engine and the heat exchanger. The second solenoid valve is used to control the opening and closing of the coolant line.

[0010] A reversing valve is installed on the second coolant line between the engine and the box to be thawed. The reversing valve is also connected to the first coolant line via the water pump. The reversing valve is used to change the direction of coolant flow. The reversing valve and the second solenoid valve form a small heating loop, which is driven by the water pump.

[0011] Optionally, a first temperature sensor is installed on the inlet of the box to be thawed and the coolant pipeline of the heat exchanger, a hot end regulating valve is installed on the hot end of the vortex tube, and a second temperature sensor is installed at the hot end outlet of the vortex tube.

[0012] Optionally, the cold end of the vortex tube is discharged to the atmosphere; the first solenoid valve is a proportional regulating valve.

[0013] According to a second aspect of the embodiments of this application, a thawing method is provided, applied in the thawing apparatus described in the first aspect, the thawing method comprising:

[0014] In response to the defrosting command of the box to be defrosted, the temperature of the box to be defrosted, the real-time engine coolant temperature, the real-time temperature of the first sensor, the real-time temperature of the second sensor, and the pressure of the air tank are obtained.

[0015] If the real-time engine water temperature and the pressure of the air tank meet the first set condition, the first solenoid valve is opened, allowing the high-pressure gas in the air tank to enter the vortex tube. The gas at the hot end of the vortex tube enters the heat exchanger to exchange heat with the coolant, and the real-time temperature of the second sensor is monitored. At the same time, the water pump is turned on, the second solenoid valve is closed, and the reversing valve is connected to the water pump to form a heating cycle for the box to be thawed.

[0016] After a preset time, if the real-time engine water temperature and air tank pressure meet the second set condition, the water pump and the first solenoid valve are shut off, the reversing valve is connected to the second coolant pipeline, the second solenoid valve is opened, and the heating coolant of the box to be thawed circulates.

[0017] When the temperature of the urea tank to be thawed is determined by the real-time temperature of the first sensor, the first solenoid valve, the second solenoid valve, and the water pump are turned off when the urea tank is thawed.

[0018] Optionally, if the real-time engine coolant temperature and air tank pressure meet the first preset condition, including:

[0019] If the real-time engine coolant temperature is less than or equal to a preset temperature threshold, and the air tank pressure is greater than or equal to a preset pressure threshold, then the first set condition is determined to be met.

[0020] Optionally, if the real-time engine coolant temperature and air tank pressure meet the second set condition, including:

[0021] If the engine's real-time coolant temperature is greater than the real-time temperature of the first sensor or a preset temperature threshold, or if the air tank pressure is less than the preset pressure threshold, then the second set condition is determined to be met.

[0022] Optionally, the airflow and temperature at the hot end of the vortex tube can be controlled by the ratio of the first solenoid valve and the hot end regulating valve of the vortex tube.

[0023] According to a third aspect of the embodiments of this application, a thawing system is provided, the system comprising:

[0024] The data acquisition module is used to respond to the defrosting command of the box to be defrosted and acquire the temperature of the box to be defrosted, the real-time engine water temperature, the real-time temperature of the first sensor, the real-time temperature of the second sensor, and the pressure of the air tank.

[0025] The small-cycle start-up module is used to open the first solenoid valve if the real-time engine water temperature and air tank pressure meet the first set conditions, so that the high-pressure gas in the air tank enters the vortex tube, the gas at the hot end of the vortex tube enters the heat exchanger to exchange heat with the coolant, and monitors the real-time temperature of the second sensor; at the same time, the water pump is turned on, the second solenoid valve is turned off, and the reversing valve is connected to the water pump to form a heating cycle for the box to be defrosted.

[0026] The large circulation start-up module is used to shut down the water pump and the first solenoid valve if the real-time water temperature of the engine and the pressure of the air tank meet the second set condition after a preset time. The reversing valve is connected to the second coolant pipeline, the second solenoid valve is opened, and the heating coolant of the box to be thawed circulates.

[0027] The defrosting stop module is used to shut down the first solenoid valve, the second solenoid valve, and the water pump when the urea tank defrosts completely, based on the real-time temperature determination of the first sensor.

[0028] According to a fourth aspect of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect above.

[0029] According to a fifth aspect of the present application, a computer-readable storage medium is provided that stores computer-readable instructions thereon, which can be executed by a processor to implement the method described in the first aspect above.

[0030] In summary, the embodiments of this application provide a defrosting device, method, and system. By judging the engine coolant temperature, sensor temperature, and preset temperature threshold, relevant solenoid valves are controlled. By changing the on / off state of the second solenoid valve and the direction of the reversing valve, and driving the water pump, a small circulation path for heating the urea tank is formed. Simultaneously, the first solenoid valve opens, introducing high-pressure air from the air compressor's storage tank into the vortex tube. A heat exchanger allows the hot end of the vortex tube to exchange heat with the coolant in the small circulation path of the urea tank, causing the coolant temperature to rise rapidly, thus achieving rapid defrosting of the urea tank. The pressure in the storage tank is judged to be within the preset pressure value to ensure the needs of other air compressors are met. This achieves rapid defrosting while reasonably controlling energy consumption. Attached Figure Description

[0031] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0032] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0033] Figure 1 This is a schematic diagram of a defrosting device provided in an embodiment of this application;

[0034] Figure 2 A flowchart of a thawing method provided in this application embodiment;

[0035] Figure 3 This is a schematic diagram of the urea tank defrosting device provided in an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the urea tank thawing process provided in an embodiment of this application;

[0037] Figure 5 A block diagram of a urea tank defrosting system provided in an embodiment of this application;

[0038] Figure 6 This illustration shows a structural schematic diagram of an electronic device provided in an embodiment of this application;

[0039] Figure 7A schematic diagram of a computer-readable storage medium provided in an embodiment of this application is shown. Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] An air compressor is a device used to compress gas, and it is generally equipped in commercial vehicles. A vortex tube is used to input compressed air at a certain pressure. Through energy conversion inside the vortex tube, cold air is generated at one end and hot air is generated at the other end.

[0042] Figure 1 This is a schematic diagram of a defrosting device provided in an embodiment of this application. The defrosting device includes: an air compressor, an air tank, a vortex tube, a heat exchanger, a box to be defrosted, a water pump, and an engine.

[0043] The air compressor, air tank and vortex tube are connected in sequence. A first solenoid valve is provided between the air tank and the vortex tube. The first solenoid valve is used to control the air flow rate entering the vortex tube.

[0044] The hot end of the vortex tube is connected to the heat exchanger, which is used to exchange heat between the internal hot air and the coolant; the vortex tube generates high-temperature gas to heat the coolant, thereby increasing the rate at which the coolant heats up.

[0045] A heat exchanger is installed on the first coolant line between the engine and the box to be thawed, and a second solenoid valve is installed on the coolant line between the engine and the heat exchanger. The second solenoid valve is used to control the opening and closing of the coolant line.

[0046] A reversing valve is installed on the second coolant line between the engine and the refrigeration tank. The reversing valve is also connected to the first coolant line via the water pump. The reversing valve is used to change the direction of coolant flow. The reversing valve and the second solenoid valve form a small heating loop, which is driven by the water pump. The water pump forms a small heating loop for the urea tank, further increasing the rate at which the coolant temperature rises.

[0047] In one possible implementation, a first temperature sensor is provided on the inlet of the thawing chamber and the coolant pipeline of the heat exchanger, a hot end regulating valve is provided on the hot end of the vortex tube, and a second temperature sensor is provided at the hot end outlet of the vortex tube.

[0048] In one possible implementation, the cold end of the vortex tube is discharged to the atmosphere; the first solenoid valve is a proportional regulating valve.

[0049] Figure 2 A flowchart of a thawing method provided in this application embodiment, applied in the above-mentioned thawing device, the thawing method comprising:

[0050] Step 201: In response to the defrosting command of the box to be defrosted, acquire the temperature of the box to be defrosted, the real-time engine coolant temperature, the real-time temperature of the first sensor, the real-time temperature of the second sensor, and the pressure of the air tank.

[0051] Step 202: If the real-time engine water temperature and air tank pressure meet the first set condition, the first solenoid valve is opened, allowing the high-pressure gas in the air tank to enter the vortex tube. The gas at the hot end of the vortex tube enters the heat exchanger to exchange heat with the coolant, and the real-time temperature of the second sensor is monitored. At the same time, the water pump is turned on, the second solenoid valve is closed, and the reversing valve is connected to the water pump to form a heating cycle for the box to be defrosted.

[0052] Step 203: After a preset time, if the real-time engine water temperature and air tank pressure meet the second set condition, then the water pump and the first solenoid valve are turned off, the reversing valve is connected to the second coolant pipeline, the second solenoid valve is opened, and the heating coolant of the box to be thawed circulates.

[0053] Step 204: When the temperature of the urea tank to be thawed is determined based on the real-time temperature of the first sensor, the first solenoid valve, the second solenoid valve, and the water pump are turned off when the urea tank is thawed.

[0054] In one possible implementation, if the real-time engine coolant temperature and air tank pressure meet a first preset condition, including:

[0055] If the real-time engine coolant temperature is less than or equal to a preset temperature threshold, and the air tank pressure is greater than or equal to a preset pressure threshold, then the first set condition is determined to be met.

[0056] In one possible implementation, if the real-time engine coolant temperature and air tank pressure meet a second preset condition, including:

[0057] If the engine's real-time coolant temperature is greater than the real-time temperature of the first sensor or a preset temperature threshold, or if the air tank pressure is less than the preset pressure threshold, then the second set condition is determined to be met.

[0058] In one possible implementation, the airflow and temperature at the hot end of the vortex tube are controlled by the ratio of the first solenoid valve and the hot end regulating valve of the vortex tube.

[0059] When a defrosting requirement is detected in the urea tank, the second solenoid valve's on / off state and the reversing valve's direction are changed, driving the water pump to create a small heating loop for the urea tank. Simultaneously, the first solenoid valve opens, introducing high-pressure air from the air compressor's storage tank into the vortex tube. A heat exchanger allows the hot-end air in the vortex tube to exchange heat with the coolant in the small heating loop of the urea tank, rapidly raising the coolant temperature and achieving rapid defrosting of the urea tank. By judging the engine coolant temperature, sensor temperature, and preset temperature thresholds, the relevant solenoid valves are controlled, achieving both rapid defrosting and reasonable energy consumption control. The air storage tank pressure is also checked against a preset pressure value to ensure the needs of other air compressors are met.

[0060] The method provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0061] Air is drawn from the air compressor's storage tank, and high-temperature gas is generated using a vortex tube to rapidly increase the coolant temperature. This is then used to form a separate small heating loop for the urea tank via a second solenoid valve and a reversing valve, causing the coolant temperature to rise rapidly and thus quickly defrost the urea tank, thereby improving the exhaust gas treatment effect.

[0062] Figure 3 A schematic diagram of the urea tank defrosting device is shown. An air compressor's storage tank is connected to the inlet of the vortex tube, with a first solenoid valve installed in between. This first solenoid valve is a proportional regulating valve that controls the airflow entering the vortex tube. The hot end of the vortex tube leads to a heat exchanger, while the cold end is discharged to the atmosphere. Hot air exchanges heat with coolant within the heat exchanger. A reversing valve changes the coolant flow direction, and a second solenoid valve controls the coolant flow. The reversing valve and the second solenoid valve work together to form a separate small heating loop for the urea tank, driven by a water pump. Temperature sensors are installed at the urea tank coolant inlet and the hot end outlet of the vortex tube.

[0063] Based on the above-mentioned thawing device, the thawing process is as follows: Figure 4 As shown, the specific steps include the following:

[0064] Step 401: Obtain the urea tank temperature, engine ECU coolant temperature T0, sensor temperature T1, sensor temperature T2, and air tank pressure P;

[0065] Step 402: Determine if there is a need for urea defreezing in the urea tank. If so, proceed to step 403; otherwise, close the first and second solenoid valves and the water pump.

[0066] Step 403: When the urea tank needs to be defrosted, continue to determine whether T0 is less than or equal to the preset temperature value T3 and the gas tank pressure P is greater than or equal to the preset pressure value P1. If yes, proceed to step 404; otherwise, close the first and second solenoid valves and the water pump.

[0067] Step 404: Open the first solenoid valve, and the high-pressure gas in the gas storage tank enters the vortex tube. The hot end gas of the vortex tube enters the heat exchanger to exchange heat with the coolant. The required hot end air flow and temperature are controlled by the proportional control of the first solenoid valve and the hot end regulating valve. At the same time, the water pump is turned on, the second solenoid valve is closed, and the reversing valve is connected to the water pump to form a small circulation for heating the urea tank.

[0068] Step 405: After a preset time S, determine whether T0 is greater than T1 or the preset temperature T3, and at the same time determine whether P is less than the preset pressure P1. If T0 is greater than T1 or the preset temperature T3 or P is less than P1, then proceed to step 406; otherwise, return to step 401.

[0069] Step 406: Turn off the water pump and the first solenoid valve, turn the reversing valve to the coolant return pipe, open the second solenoid valve, and the urea tank heats the coolant to circulate in the large loop; otherwise, if the urea tank has finished defrosting, turn off the first and second solenoid valves and the water pump directly.

[0070] In summary, this application provides a defrosting device and method. By judging the engine coolant temperature, sensor temperature, and a preset temperature threshold, relevant solenoid valves are controlled. By changing the on / off state of the second solenoid valve and the direction of the reversing valve, and driving the water pump, a small circulation path for heating the urea tank is formed. Simultaneously, the first solenoid valve opens, introducing high-pressure air from the air compressor's storage tank into the vortex tube. A heat exchanger allows the hot-end air of the vortex tube to exchange heat with the coolant in the small circulation path of the urea tank, causing the coolant temperature to rise rapidly, thus achieving rapid defrosting of the urea tank. The pressure in the storage tank is judged to be within the preset pressure value to ensure the needs of other air compressors are met. This achieves rapid defrosting while reasonably controlling energy consumption.

[0071] Based on the same technical concept, embodiments of this application also provide a defrosting system, such as... Figure 5 As shown, the system includes:

[0072] The data acquisition module 501 is used to acquire the temperature of the box to be thawed, the real-time engine water temperature, the real-time temperature of the first sensor, the real-time temperature of the second sensor, and the pressure of the air tank in response to the thawing command of the box to be thawed.

[0073] The small-cycle start-up module 502 is used to open the first solenoid valve if the real-time engine water temperature and air tank pressure meet the first set conditions, so that the high-pressure gas in the air tank enters the vortex tube, the gas at the hot end of the vortex tube enters the heat exchanger to exchange heat with the coolant, and monitors the real-time temperature of the second sensor; at the same time, the water pump is turned on, the second solenoid valve is turned off, and the reversing valve is connected to the water pump to form a heating cycle for the box to be defrosted.

[0074] The large circulation start module 503 is used to shut down the water pump and the first solenoid valve if the real-time water temperature of the engine and the pressure of the air tank meet the second set condition after a preset time. The reversing valve is connected to the second coolant pipeline, the second solenoid valve is opened, and the heating coolant of the box to be thawed circulates.

[0075] The defrosting stop module 504 is used to shut down the first solenoid valve, the second solenoid valve, and the water pump when the urea tank defrosts completely, based on the real-time temperature determination of the tank temperature by the first sensor.

[0076] This application also provides an electronic device corresponding to the method provided in the foregoing embodiments. Please refer to... Figure 6 The diagram illustrates an electronic device provided by some embodiments of this application. The electronic device 20 may include: a processor 200, a memory 201, a bus 202, and a communication interface 203, wherein the processor 200, the communication interface 203, and the memory 201 are connected via the bus 202; the memory 201 stores a computer program that can run on the processor 200, and when the processor 200 runs the computer program, it executes the method provided by any of the foregoing embodiments of this application.

[0077] The memory 201 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one physical port 203 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network.

[0078] Bus 202 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. The memory 201 is used to store programs. After receiving an execution instruction, the processor 200 executes the program. The method disclosed in any of the foregoing embodiments of this application can be applied to the processor 200, or implemented by the processor 200.

[0079] The processor 200 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 200 or by instructions in software form. The processor 200 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 201. The processor 200 reads the information in memory 201 and, in conjunction with its hardware, completes the steps of the above method.

[0080] The electronic devices and methods provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods they employ, operate, or implement.

[0081] This application also provides a computer-readable storage medium corresponding to the method provided in the foregoing embodiments. Please refer to... Figure 7 The computer-readable storage medium shown is an optical disc 30, on which a computer program (i.e., a program product) is stored, which, when run by a processor, executes the methods provided in any of the foregoing embodiments.

[0082] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0083] The computer-readable storage medium provided in the above embodiments of this application and the method provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the applications stored therein.

[0084] It should be noted that:

[0085] The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other equipment. Various general-purpose devices can also be used in conjunction with the teachings herein. The required structure for constructing such devices is apparent from the above description. Furthermore, this application is not directed to any particular programming language. It should be understood that the content of this application described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of this application.

[0086] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0087] Similarly, it should be understood that, in order to simplify this application and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of this application, various features of this application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed application requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0088] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0089] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0090] The various component embodiments of this application can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the virtual machine creation apparatus according to embodiments of this application. This application can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such an implementation of this application can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0091] It should be noted that the above embodiments are illustrative of this application and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0092] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A defrosting device, characterized in that, The defrosting device includes: an air compressor, an air tank, a vortex tube, a heat exchanger, a box to be defrosted, a water pump, and an engine; The air compressor, air tank and vortex tube are connected in sequence. A first solenoid valve is provided between the air tank and the vortex tube. The first solenoid valve is used to control the air flow rate entering the vortex tube. The hot end of the vortex tube is connected to the heat exchanger, which is used to exchange heat between the internal hot air and the coolant. A heat exchanger is installed on the first coolant pipeline between the engine and the box to be thawed, and a second solenoid valve is installed on the first coolant pipeline between the engine and the heat exchanger. The second solenoid valve is used to control the opening and closing of the first coolant pipeline. A reversing valve is installed on the second coolant pipeline between the engine and the box to be thawed. The reversing valve is also connected to the first coolant pipeline between the second solenoid valve and the heat exchanger via the water pump. The connection point between the water pump and the first coolant pipeline is located on the first coolant pipeline between the second solenoid valve and the heat exchanger. The reversing valve is used to change the direction of coolant flow. By opening the first solenoid valve, closing the second solenoid valve, and turning on the water pump, a small heating loop is formed for the box to be thawed; by closing the water pump and the first solenoid valve, opening the second solenoid valve, and turning on the second coolant line, a large heating loop is formed for the box to be thawed. A first temperature sensor is installed on the first coolant pipeline between the inlet of the thawing chamber and the heat exchanger, a hot end regulating valve is installed at the hot end of the vortex tube, and a second temperature sensor is installed at the hot end outlet of the vortex tube.

2. The defrosting device as described in claim 1, characterized in that, The cold end of the vortex tube is discharged to the atmosphere; the first solenoid valve is a proportional regulating valve.

3. A thawing method, applied in the thawing apparatus according to claim 1 or 2, characterized in that, The thawing method includes: In response to the defrosting command of the box to be defrosted, the temperature of the box to be defrosted, the real-time engine coolant temperature, the real-time temperature of the first temperature sensor, the real-time temperature of the second temperature sensor, and the pressure of the air tank are obtained. If the real-time engine water temperature and the pressure of the air tank meet the first set condition, the first solenoid valve is opened, allowing the high-pressure gas in the air tank to enter the vortex tube. The gas at the hot end of the vortex tube enters the heat exchanger to exchange heat with the coolant, and the real-time temperature of the second temperature sensor is monitored. At the same time, the water pump is turned on, the second solenoid valve is closed, and the reversing valve is connected to the water pump to form a small heating loop for the box to be thawed. After a preset time, if the real-time engine water temperature and air tank pressure meet the second set condition, the water pump and the first solenoid valve are shut off, the reversing valve is connected to the second coolant pipeline, and the second solenoid valve is opened to form a large circulation for heating the box to be thawed. When the thawing of the box is completed according to the real-time temperature determination of the first temperature sensor, the first solenoid valve, the second solenoid valve and the water pump are turned off.

4. The method as described in claim 3, characterized in that, If the real-time engine coolant temperature and air tank pressure meet the first preset conditions, including: If the real-time engine coolant temperature is less than or equal to a preset temperature threshold, and the air tank pressure is greater than or equal to a preset pressure threshold, then the first set condition is determined to be met.

5. The method as described in claim 3, characterized in that, If the real-time engine coolant temperature and air tank pressure meet the second set conditions, including: If the real-time engine coolant temperature is greater than the real-time temperature of the first temperature sensor or the preset temperature threshold, or if the air tank pressure is less than the preset pressure threshold, then the second set condition is determined to be met.

6. The method as described in claim 3, characterized in that, The airflow and temperature at the hot end of the vortex tube are controlled by the first solenoid valve and the hot end regulating valve of the vortex tube.

7. A defrosting system, applied in the defrosting apparatus according to claim 1 or 2, characterized in that, The system includes: The data acquisition module is used to respond to the defrosting command of the box to be defrosted and acquire the temperature of the box to be defrosted, the real-time engine water temperature, the real-time temperature of the first temperature sensor, the real-time temperature of the second temperature sensor, and the pressure of the air tank. The small-loop start-up module is used to open the first solenoid valve if the real-time engine water temperature and air tank pressure meet the first set conditions, so that the high-pressure gas in the air tank enters the vortex tube, the gas at the hot end of the vortex tube enters the heat exchanger to exchange heat with the coolant, and monitors the real-time temperature of the second temperature sensor; at the same time, the water pump is turned on, the second solenoid valve is turned off, and the reversing valve is connected to the water pump to form a small-loop heating system for the box to be defrosted. The large circulation start-up module is used to shut down the water pump and the first solenoid valve if the real-time water temperature of the engine and the pressure of the air tank meet the second set condition after a preset time. The reversing valve is connected to the second coolant pipeline, and the second solenoid valve is opened to form a large circulation for heating the box to be defrosted. The defrosting stop module is used to shut down the first solenoid valve, the second solenoid valve, and the water pump when the defrosting of the box to be defrosted is completed based on the real-time temperature determined by the first temperature sensor.

8. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, performs the method as described in any one of claims 3-6.

9. A computer-readable storage medium, characterized in that, It stores computer-readable instructions that can be executed by a processor to implement the method as described in any one of claims 3-6.

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