Temperature adjusting equipment, lubricating oil separation method and device and readable storage medium

Abstract

The invention relates to temperature adjusting equipment, a lubricating oil separation method and device, a computer readable storage medium and a computer program product. The temperature adjusting equipment comprises a condenser, a subcooler, a pump, an evaporator and a compressor, the condenser, the subcooler, the evaporator and the compressor are communicated through a main flow path pipeline, temperature adjustment is carried out through a refrigerant in the main flow path pipeline, the evaporator is communicated with the subcooler through a conveying pipeline, and the pump is arranged on the conveying pipeline. And the pump is used for pumping the mixture to be separated in the evaporator into the subcooler, so that the mixture to be separated exchanges heat with the main flow path pipeline in the subcooler. The temperature adjusting equipment can improve the heat exchange efficiency of the unit.

Description

Technical Field

[0001] The present application relates to the technical field of temperature regulating equipment, and in particular to a temperature regulating equipment, a lubricating oil separation method, a device, a computer-readable storage medium, and a computer program product. Background Art

[0002] With the development of temperature control technology, most temperature control units on the market use Freon as refrigerant. Unlike ammonia refrigerant, the lubricating oil in the compressor has a higher solubility in Freon. The heat transfer coefficient between the Freon liquid with dissolved lubricating oil and the heat exchange wall will be reduced, affecting the heat exchange capacity of the evaporator.

[0003] In traditional solutions, a refrigerant with a higher heat transfer coefficient is usually selected, or the heat transfer area of ​​the heat transfer wall is increased, thereby increasing the subcooling of the refrigerant in the temperature control loop and increasing the unit cooling capacity of the refrigerant to improve the heat transfer capacity of the temperature control unit.

[0004] However, when the temperature control unit is working, as the lubricating oil in the compressor continues to dissolve in the refrigerant, the heat transfer coefficient of the refrigerant continues to decrease, and the heat transfer capacity of the temperature control unit also continues to decrease. That is, the traditional solution is still difficult to fundamentally solve the problem of low heat transfer capacity of the unit. Summary of the invention

[0005] Based on this, it is necessary to provide a temperature regulating device, a lubricating oil separation method, a device, a computer-readable storage medium and a computer program product that can improve the heat exchange capacity of the unit in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a temperature regulating device, comprising a temperature regulating device including a condenser, a subcooler, a pump, an evaporator and a compressor;

[0007] The condenser, the subcooler, the evaporator and the compressor are connected by a main flow pipeline, and the temperature is adjusted by the refrigerant in the main flow pipeline;

[0008] The evaporator is connected to the subcooler through a transport pipeline. The pump is arranged in the transport pipeline and is used to pump the mixture to be separated in the evaporator into the subcooler so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

[0009] In one embodiment, the temperature regulating device further includes a first valve, the subcooler is connected to the compressor through an exhaust pipe, and the first valve is arranged on the exhaust pipe.

[0010] In one of the embodiments, the temperature regulating device further includes a second valve, the subcooler is connected to the compressor via an oil drain pipeline, and the second valve is arranged on the oil drain pipeline.

[0011] In one embodiment, the temperature regulating device further includes an oil separator and a third valve, wherein the oil separator is disposed in a main flow pipeline between the compressor and the condenser, the oil separator is connected to the subcooler through a pressurized pipeline, and the third valve is disposed in the pressurized pipeline.

[0012] In one embodiment, the temperature regulating device further comprises a controller, and the controller is connected to the pump.

[0013] In one embodiment, the temperature regulating device further comprises a first temperature detection device and a second temperature detection device respectively disposed at two ends of the main flow pipe in the subcooler, and the first temperature detection device and the second temperature detection device are both connected to the controller;

[0014] The first temperature detection device is used to detect a first temperature of a first end of a main flow path pipeline in the subcooler and send the temperature to the controller, and the second temperature detection device is used to detect a second temperature of a second end of a main flow path pipeline in the subcooler and send the temperature to the controller;

[0015] The controller is used to control the working state of the pump according to the first temperature and the second temperature.

[0016] In one embodiment, the temperature regulating device further comprises a controller, and the controller is connected to the second valve.

[0017] In one of the embodiments, the temperature regulating device further comprises a liquid level detection device disposed in the subcooler, and the liquid level detection device is connected to the controller;

[0018] The liquid level detection device is used to detect the liquid level in the subcooler and send it to the controller;

[0019] The controller is used to control the working state of the second valve according to the liquid level.

[0020] In one of the embodiments, the temperature regulating device further comprises a pressure detection device disposed in the oil discharge pipeline, and the pressure detection device is connected to the controller;

[0021] The pressure detection device is used to detect the liquid pressure in the oil discharge pipeline and send it to the controller;

[0022] The controller is used to control the working state of the second valve according to the liquid pressure.

[0023] In one of the embodiments, the temperature regulating device further comprises an expansion valve, and the expansion valve is disposed in a main flow pipe between the subcooler and the evaporator.

[0024] In a second aspect, the present application further provides a lubricating oil separation method, which is applied to any one of the above-mentioned temperature adjustment device embodiments, and the method comprises:

[0025] When receiving a separation start signal, controlling the transport pipeline to be turned on;

[0026] The pump is controlled to start and the mixture to be separated in the evaporator is pumped into the subcooler, so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

[0027] In one embodiment, the method further comprises:

[0028] Controlling the conduction of the exhaust pipe between the subcooler and the compressor;

[0029] When the temperature difference between the two ends of the main flow path pipeline in the transport subcooler is less than a preset temperature difference threshold, the pump is turned off.

[0030] In one embodiment, after shutting down the pump, the method further comprises:

[0031] After a preset exhaust time period, the exhaust pipe is controlled to be blocked, and the oil discharge pipe between the subcooler and the compressor is controlled to be connected;

[0032] When the liquid level in the subcooler is less than a preset liquid level threshold, or the liquid pressure in the oil drain pipeline is less than a preset liquid pressure threshold, the oil drain pipeline is controlled to be blocked.

[0033] In one embodiment, after controlling the oil drain pipeline between the subcooler and the compressor to be connected, the method further includes:

[0034] The pressurized pipeline between the subcooler and the oil separator is controlled to be connected so that the oil separator delivers high-pressure gas to the subcooler, and the liquid in the subcooler is discharged into the compressor through the oil discharge pipeline under the action of the high-pressure gas.

[0035] In a third aspect, the present application further provides a lubricating oil separation device, which is applied to any one of the above-mentioned temperature adjustment device embodiments, and the device includes:

[0036] A pipeline control module, used to control the transport pipeline to be connected when receiving a separation start signal;

[0037] The pump control module is used to control the start of the pump to pump the mixture to be separated in the evaporator into the subcooler so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

[0038] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps in any one of the above-mentioned lubricating oil separation method embodiments.

[0039] In a fifth aspect, the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps in any one of the above-mentioned lubricating oil separation method embodiments.

[0040] The above-mentioned temperature regulating equipment, lubricating oil separation method, device, computer-readable storage medium, and computer program product are connected to each other by a main flow pipeline between the condenser, the subcooler, the evaporator, and the compressor, and the temperature is regulated by the refrigerant in the main flow pipeline. When the refrigerant and the lubricating oil need to be separated, the mixture to be separated in the evaporator is pumped into the condenser by the pump in the temperature regulating equipment, and the temperature difference between the mixture to be separated and the liquid in the main flow pipeline in the temperature regulator is utilized to make the mixture to be separated exchange heat with the main flow pipeline, and the refrigerant in the mixture to be separated evaporates, and the remaining lubricating oil liquid is stored in the subcooler, thereby realizing the separation of the lubricating oil and the refrigerant. Different from the traditional scheme of increasing the heat exchange area, this scheme uses the subcooler as the oil separation place, and pumps the mixture to be separated in the evaporator into the subcooler through a pump to exchange heat with the main flow pipeline. This can not only make the mixture to be separated cool the refrigerant in the main flow pipeline, increase the subcooling degree of the refrigerant in the main flow pipeline, and improve the heat exchange efficiency, but also make the refrigerant in the mixture to be separated absorb heat and evaporate, and separate from the lubricating oil, reducing the amount of lubricating oil dissolved in the refrigerant, and fundamentally improving the problem of reduced heat exchange efficiency of the unit caused by the dissolution of lubricating oil in the refrigerant. Therefore, this scheme can significantly improve the heat exchange efficiency of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 is a structural block diagram of a temperature regulating device in one embodiment;

[0043] Figure 2is a structural block diagram of a temperature regulating device in another embodiment;

[0044] Figure 3 It is a structural block diagram of a temperature regulating device in yet another embodiment;

[0045] Figure 4 A structural block diagram of a temperature regulating device in another embodiment;

[0046] Figure 5 It is a structural block diagram of a part of the temperature adjustment device in one embodiment;

[0047] Figure 6 It is a structural block diagram of a part of the temperature regulating device in another embodiment;

[0048] Figure 7 is a structural block diagram of a temperature regulating device in a detailed embodiment;

[0049] Figure 8 A schematic diagram of a lubricating oil separation method in one embodiment;

[0050] Fig. 9 A schematic diagram of a lubricating oil separation method in a detailed embodiment;

[0051] Fig.10 is a structural block diagram of a lubricating oil separation device in one embodiment;

[0052] Fig.11 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0056] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0057] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0058] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0059] In one embodiment, a temperature adjustment device 100 is provided. Figure 1 As shown, the temperature regulating device 100 includes a condenser 110, a subcooler 120, a pump 130, an evaporator 140 and a compressor 150, wherein the condenser 110, the subcooler 120, the evaporator 140 and the compressor 150 are connected by a main flow pipeline, and the temperature is regulated by the refrigerant in the main flow pipeline. The evaporator 140 is connected to the subcooler 120 through a transport pipeline, and the pump 130 is arranged in the transport pipeline for pumping the mixture to be separated in the evaporator 140 into the subcooler 120 so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler 120.

[0060] Among them, the condenser 110 is used to exchange heat with the external fluid, so as to cool the high-temperature and high-pressure refrigerant gas in the main flow pipeline of the condenser 110 into a refrigerant liquid at normal temperature and high pressure. The subcooler 120 is a heat exchanger, and the main flow pipeline passes through the subcooler 120. The mixture to be separated in the subcooler 120 can exchange heat with the main flow pipeline, thereby reducing the temperature of the refrigerant in the main flow pipeline and improving the unit cooling capacity of the refrigerant. The liquid in the main flow pipeline is not in direct contact with the mixture to be separated in the subcooler 120, but is isolated by the pipeline wall of the main flow pipeline. The pump 130 is a device for conveying the mixture to be separated, and generates suction or pressure through a motor or other driving device, so as to pump the mixture to be separated in the evaporator 140 into the subcooler 120 through the transport pipeline. The evaporator 140 is used to exchange heat with the external fluid, so as to evaporate the low-temperature and low-pressure refrigerant liquid into a refrigerant gas at normal temperature and low pressure. The compressor 150 is used to compress the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas.

[0061] Specifically, taking the refrigerant as Freon refrigerant as an example, the condenser 110, the subcooler 120, the evaporator 140 and the compressor 150 are connected by a main flow pipeline, and the temperature is adjusted by the Freon refrigerant in the main flow pipeline. In the temperature adjustment loop, the lubricating oil in the compressor 150 will dissolve into the Freon refrigerant to form a mixture to be separated (hereinafter referred to as the oil-fluorine mixture). As more and more lubricating oil dissolves, the proportion of lubricating oil in the oil-fluorine mixture in the evaporator 140 increases, resulting in a decrease in the heat exchange performance of the evaporator 140. Therefore, the oil-fluorine mixture circulates in the entire main flow pipeline. By separating the oil-fluorine mixture in the evaporator 140, the lubricating oil dissolved in the refrigerant in the main flow pipeline can be effectively reduced.

[0062] For example, taking the temperature regulating device being in a refrigeration state as an example, the main flow pipeline in the subcooler 120 can be bent in a disc shape to increase the contact area with the oil-fluorine mixture and improve the heat exchange efficiency. The temperature regulating device can also include a controller, which is connected to the pump 130. When the controller receives a separation start signal, it means that the oil-fluorine mixture in the evaporator 140 is to be separated from the oil-fluorine mixture. At this time, the controller starts the pump 130 to pump the oil-fluorine mixture in the evaporator 140 into the subcooler 120. Since the temperature of the oil-fluorine mixture in the evaporator 140 is lower than the temperature of the liquid in the main flow pipeline, the oil-fluorine mixture in the subcooler 120 absorbs the heat of the liquid in the main flow pipeline, and due to the different boiling points of the lubricating oil and the refrigerant, the refrigerant in the oil-fluorine mixture absorbs heat and evaporates to become a refrigerant gas, and the lubricating oil is temporarily stored in the subcooler 120 to achieve oil-fluorine separation.

[0063] In this embodiment, the condenser, the subcooler, the evaporator and the compressor are connected by a main flow pipeline, and the temperature is adjusted by the refrigerant in the main flow pipeline. When the refrigerant and the lubricating oil need to be separated, the mixture to be separated in the evaporator is pumped into the condenser by the pump in the temperature regulating device. The temperature difference between the mixture to be separated and the liquid in the main flow pipeline in the temperature regulator is utilized to make the mixture to be separated exchange heat with the main flow pipeline, and the refrigerant in the mixture to be separated evaporates, and the remaining lubricating oil liquid is stored in the subcooler, thereby realizing the separation of the lubricating oil and the refrigerant. Different from the traditional scheme of increasing the heat exchange area, this scheme uses the subcooler as the oil separation place, and pumps the mixture to be separated in the evaporator into the subcooler through a pump to exchange heat with the main flow pipeline. This can not only make the mixture to be separated cool the refrigerant in the main flow pipeline, increase the subcooling degree of the refrigerant in the main flow pipeline, and improve the heat exchange efficiency, but also make the refrigerant in the mixture to be separated absorb heat and evaporate, and separate from the lubricating oil, reducing the amount of lubricating oil dissolved in the refrigerant, and fundamentally improving the problem of reduced heat exchange efficiency of the unit caused by the dissolution of lubricating oil in the refrigerant. Therefore, this scheme can significantly improve the heat exchange efficiency of the unit.

[0064] In one embodiment, Figure 2 As shown, the temperature regulating device 100 further includes a first valve 01 , the subcooler 120 is connected to the compressor 150 through an exhaust pipe, and the first valve 01 is arranged in the exhaust pipe.

[0065] The first valve 01 is used to control the on-off of the exhaust pipe, and may also be other devices capable of controlling the exhaust pipe, including but not limited to ball valves, gate valves, solenoid valves and other structures.

[0066] Following the above embodiment, the controller is also connected to the first valve 01, and can control the opening and closing of the first valve 01. In the process of heat exchange between the oil-fluorine mixture in the subcooler 110 and the mainstream pipeline, the first valve 01 is controlled to open, so that the evaporated refrigerant gas can enter the compressor through the exhaust pipe to achieve refrigerant recovery. It should be noted that when there is still refrigerant to be evaporated in the oil-fluorine mixture, the first valve 01 needs to be in an open state to prevent excessive refrigerant gas in the subcooler 110 and excessive air pressure from causing safety risks.

[0067] In this embodiment, an exhaust channel is provided in the subcooler and the compressor, and the first valve is opened during the heat exchange between the oil-fluorine mixture and the mainstream pipeline, so that the evaporated refrigerant gas is promptly recovered to the compressor through the exhaust channel, thereby improving the refrigerant recovery efficiency and the safety of the lubricating oil separation process.

[0068] In one embodiment, Figure 3As shown, the temperature regulating device 100 further includes a second valve 02, the subcooler 120 is connected to the compressor 150 via an oil discharge pipeline, and the second valve 02 is arranged on the oil discharge pipeline.

[0069] Among them, the second valve 02 is used to control the on-off of the oil discharge pipeline. Similar to the first valve 01, the second valve 02 can also be other devices that can control the oil discharge pipeline, including but not limited to ball valves, gate valves and other structures.

[0070] Following the above embodiment, when the lubricating oil stored in the subcooler 120 is sufficient, the separated lubricating oil in the subcooler 120 needs to be discharged in time. For example, when the amount of lubricating oil separated in the subcooler 120 reaches a threshold value, the controller needs to control the pump 130 to be closed so that no new oil-fluorine mixture is pumped into the subcooler 120, and at the same time, the controller controls the second valve 02 to be opened so that the lubricating oil can be recovered to the compressor through the oil discharge channel, so that the compressor does not have the risk of burning due to insufficient lubricating oil.

[0071] In this embodiment, through the oil drain channel and the second valve, when the lubricating oil separated in the subcooler is sufficient, the lubricating oil can be promptly recovered to the compressor to reduce the risk of damage to the compressor. When the separated lubricating oil is too much, the heat exchange efficiency between the oil-fluorine mixture in the subcooler and the mainstream pipeline will also decrease. Therefore, discharging the lubricating oil in time can improve the heat exchange efficiency of the subcooler.

[0072] In one embodiment, Figure 4 As shown, the temperature regulating device 100 also includes an oil separator 160 and a third valve 03. The oil separator 160 is arranged in the main flow pipeline between the compressor 150 and the condenser 110. The oil separator 160 is connected to the cooler 120 through a pressurized pipeline, and the third valve 03 is arranged in the pressurized pipeline.

[0073] The third valve 03 is used to control the on and off of the pressurized pipeline, and may also be other devices capable of controlling the pressurized pipeline, including but not limited to ball valves, gate valves, solenoid valves, etc. Taking the temperature regulating device 100 in the refrigeration state as an example, when the refrigerant flows through the oil separator 160 in the mainstream pipeline, the oil separator 160 preliminarily separates and stores the lubricating oil in the oil-fluorine mixture discharged from the compressor 150. In addition, the oil separator 160 can also transport high-pressure gas to the subcooler 120 through the pressurized pipeline. The high-pressure gas is incompatible with the oil-fluorine mixture and does not react chemically.

[0074] Continuing with the above embodiment, when the oil drain pipeline is connected, in order to speed up the discharge of the lubricating oil, the controller controls the third valve 03 to open, and the oil separator 160 delivers high-pressure gas to the subcooler 120 through the pressurized channel. Under the action of the high-pressure gas, the lubricating oil will be accelerated to be discharged from the oil drain channel.

[0075] In this embodiment, through the oil separator, the third valve and the exhaust channel, when the lubricating oil needs to be discharged from the supercooler through the oil drain pipe, high-pressure gas can be transported to the supercooler through the oil separator and the exhaust channel to accelerate the discharge of the lubricating oil, thereby further improving the subsequent separation efficiency of the lubricating oil.

[0076] In one embodiment, Figure 5 As shown, the temperature regulating device 100 further includes a controller 160, which is connected to the pump 130 and is used to control the switch of the pump 130. The controller 160 in the temperature regulating device 100 is also connected to the first valve 01, the second valve 02, and the third valve 03, and is used to control the switch of the first valve 01, the second valve 02, and the third valve 03. Among them, the controller 160 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0077] In this embodiment, the controller in the temperature regulating device can control the switching of the first valve, the second valve, and the third valve of the pump, thereby flexibly adjusting the operating conditions of the temperature regulating device without manual intervention, thereby improving the separation efficiency of the lubricating oil.

[0078] In one embodiment, Figure 6 As shown, the temperature regulating device 100 also includes a first temperature detection device 170 and a second temperature detection device 180 respectively arranged at the two ends of the main flow path pipeline in the subcooler, and the first temperature detection device 170 and the second temperature detection device 180 are both connected to the controller 160. The first temperature detection device 170 is used to detect the first temperature of the first end of the main flow path pipeline in the subcooler 120 and send it to the controller. The second temperature detection device 180 is used to detect the second temperature of the second end of the main flow path pipeline in the subcooler 120 and send it to the controller. The controller 160 is used to control the working state of the pump 130 according to the first temperature and the second temperature.

[0079] Specifically, the more lubricating oil content in the oil-fluorine mixture in the subcooler 120, the lower the heat exchange efficiency with the main flow pipeline, and thus the smaller the temperature difference of the liquid at both ends of the main flow pipeline in the subcooler 120. Therefore, the temperature difference can be used as a basis to determine the working state of the pump 130, the timing of oil discharge, etc.

[0080] Exemplarily, the controller receives the first temperature of the first end of the main flow pipe in the subcooler 120 detected by the first temperature detection device 170, and the second temperature of the second end of the main flow pipe in the subcooler 120 detected by the second temperature detection device 180, and determines the temperature difference according to the first temperature and the second temperature. When the temperature difference is less than the preset temperature difference threshold, it is considered that the content of lubricating oil in the oil-fluorine mixture in the subcooler 120 is sufficient, and it is necessary to enter the oil discharge mode. At this time, the controller first controls the pump 130 to close, and no longer pumps the oil-fluorine mixture from the evaporator 140, and further closes the first valve 01, opens the second valve 02 and the third valve 03, and recovers the lubricating oil in the subcooler 120 to the compressor 150 through the oil discharge pipe through the high-pressure gas. It should be noted that in addition to comparing the temperature difference with the preset temperature difference threshold, an intelligent algorithm, such as a deep learning model, can also be deployed in the controller to determine the oil discharge timing by analyzing the first temperature and the second temperature, and intelligently control the switch of the pump 120 and each valve.

[0081] In this embodiment, by using the temperature difference at both ends of the main flow pipe of the subcooler as the basis for determining the timing of oil drainage, the separation status of the lubricating oil in the subcooler can be analyzed more accurately, and when the heat exchange efficiency in the subcooler decreases and the accumulated amount of lubricating oil is sufficient, the pump is controlled to be closed, the exhaust channel is closed, and the oil drainage channel and the pressurization channel are opened, so as to discharge the lubricating oil in time and improve the heat exchange efficiency.

[0082] In one embodiment, Figure 6 As shown, the temperature regulating device 100 also includes a liquid level detection device 190 arranged in the subcooler 120. The liquid level detection device 190 is connected to the controller 160. The liquid level detection device is used to detect the liquid level in the subcooler 120 and send it to the controller 160. The controller is used to control the working state of the second valve 02 according to the liquid level.

[0083] The liquid level detection device 190 includes but is not limited to a liquid level meter, a liquid level photoelectric switch, and other devices that can be used to detect the liquid level.

[0084] Continuing with the above embodiment, when the temperature regulating device 100 is in the oil drain mode, it is also necessary to monitor the liquid level in the subcooler 120 in real time. When the liquid level drops to a certain value, the oil drain channel and the pressurization channel need to be closed in time.

[0085] Exemplarily, the liquid level detection device 190 detects the liquid level in the subcooler 120 and sends the liquid level to the controller. The controller determines the amount of remaining lubricating oil in the subcooler 120 according to the liquid level. When the liquid level is less than the preset liquid pressure threshold, the second valve 02 and the third valve 03 are controlled to close, and the oil discharge ends. In addition, intelligent algorithms such as deep learning can also be introduced to intelligently determine the timing of oil discharge end based on the liquid level.

[0086] In this embodiment, the liquid level height in the supercooler is monitored in real time by a liquid level detection device, and the timing of oil drainage completion is determined based on the liquid level height. This allows the end of oil drainage to be quickly and accurately controlled. When the lubricating oil is about to be drained, the oil drainage channel is closed in time to facilitate rapid entry into the next round of oil-fluorine separation, thereby improving the separation efficiency of the lubricating oil.

[0087] In one embodiment, Figure 6 As shown, the temperature regulating device 100 also includes a pressure detection device 200 arranged in the oil drain pipeline. The pressure detection device 200 is connected to the controller 160. The pressure detection device 200 is used to detect the liquid pressure in the oil drain pipeline and send it to the controller 160. The controller is used to control the working state of the second valve 02 according to the liquid pressure.

[0088] The pressure detection device 200 includes but is not limited to a pressure gauge, a pressure sensor, a capillary pressure detection device, etc., and is used to detect the liquid pressure in the oil discharge pipeline.

[0089] Specifically, when the lubricating oil in the subcooler 120 is discharged through the oil drain pipe, the less lubricating oil remains in the subcooler 120, the smaller the liquid pressure (or the pressure difference between the atmospheric pressure and the liquid pressure in the oil drain pipe) detected by the pressure detection device 200 in the oil drain pipe. When the liquid pressure received by the controller 160 is less than the preset liquid pressure threshold, it means that the lubricating oil in the subcooler 120 is already small enough. At this time, the second valve 02 can be controlled to close, the oil drain pipe is blocked, and the oil drain mode is ended.

[0090] In this embodiment, the liquid pressure in the oil drain pipeline is monitored in real time by a liquid level detection device, and the end time of oil drain is determined according to the liquid pressure. The end of oil drain can be controlled quickly and accurately. When the lubricating oil is about to be drained, the oil drain channel is closed in time to facilitate the next round of oil-fluorine separation, thereby improving the separation efficiency of the lubricating oil.

[0091] In one embodiment, the temperature regulating device 100 also includes an expansion valve, which is arranged in the main flow pipeline between the subcooler 120 and the evaporator 140 (not shown in the figure), and is used to throttle the refrigerant liquid at room temperature and high pressure into a refrigerant gas-liquid two-phase fluid at low temperature and low pressure, thereby reducing the temperature of the oil-fluorine mixture entering the evaporator, thereby increasing the temperature difference between the oil-fluorine mixture pumped into the subcooler 120 and the main flow pipeline, thereby improving the heat exchange efficiency.

[0092] In order to more clearly explain the temperature adjustment device 100 proposed in this solution, a specific embodiment is used for explanation below. For example, the temperature adjustment device 100 is in a cooling state. Figure 7As shown, the temperature regulating device 100 includes a compressor 150, an oil separator 160, a condenser 110, a subcooler 120 with an oil separation function, an expansion valve 04 and an evaporator 140, and a solenoid valve 05 (used to control the on-off of the pipeline for discharging the lubricating oil separated by the oil separator 160 into the compressor 1) arranged on the pipeline between the oil separator 160 and the compressor 150, a third valve 03 arranged on the pressurized pipeline between the air outlet of the oil separator 160 and the subcooler 120, a first valve 01 arranged on the exhaust pipeline between the oil separator 160 and the air inlet of the compressor 150, a second valve 02 arranged on the oil discharge pipeline between the subcooler 120 and the oil return port of the compressor 150, and a pump 130 on the pipeline connecting the evaporator 140 and the subcooler 120, which is used to pump the oil-fluorine mixture in the evaporator into the subcooler, and a solenoid valve 06 arranged on the pipeline between the evaporator 140 and the subcooler 120.

[0093] Among them, in addition to separating the refrigerant and lubricating oil in the oil-fluorine mixture, the subcooler 120 can further cool the liquid before entering the expansion valve 04, thereby increasing the degree of subcooling and thus increasing the unit cooling capacity of the refrigerant.

[0094] Specifically, the temperature regulating device 100 has three working modes, namely, air supply mode, fluorine oil separation mode and oil discharge mode. When the temperature regulating device 100 is in the air supply mode, the oil-fluorine mixture in the evaporator 140 is pumped into the subcooler, and the liquid level submerges the coil part of the main flow pipeline in the subcooler 120, and exchanges heat with the coil. While the refrigerant in the oil-fluorine mixture evaporates, the liquid in the coil is further cooled, and the degree of supercooling is improved. The first valve 01 is in an open state, and the evaporated refrigerant enters the compressor through the exhaust pipe. The lubricating oil in the subcooler 120 becomes more and more and remains in the subcooler 120. When the temperature regulating device 100 is in the fluorine oil separation mode, since the lubricating oil in the subcooler 120 has reached a certain amount, the pump 130 is turned off, and the first valve 01 is kept open. After a preset time period, it is considered that the refrigerant in the oil-fluorine mixture in the subcooler 120 has been completely evaporated and discharged, and only the lubricating oil is left. When only lubricating oil is left, the temperature regulating device 100 enters the oil discharge mode, closes the first valve 01, opens the third valve 03, and opens the second valve 02, and the high-pressure gas in the oil separator 160 enters and is transported to the subcooler 120, and the lubricating oil in the subcooler 120 is pressed into the compressor, and then enters a new round of air replenishment mode. This cycle can continuously reduce the lubricating oil in the evaporator 140 and discharge the lubricating oil into the compressor 150.

[0095] It should be noted that the switching timing of the above three modes can be determined based on the operating data of each component in the temperature regulating device 100. For example, a refrigeration control algorithm such as a deep model algorithm is introduced into the temperature regulating device 100 to adaptively adjust the working mode of the temperature regulating device 100 according to the operating data. For example, since the compressor load has a greater impact on the supercooling degree, when the compressor load is relatively small, the working efficiency of the supercooler is low. Therefore, when the compressor load is less than the preset load threshold, the temperature regulating device 100 can be controlled to enter the oil discharge mode to improve the heat exchange efficiency of the supercooler 120. In addition, since the pressure in the supercooler 120 is jointly determined by the condensing pressure, the evaporation pressure and the compressor load, the compressor load can also be inferred based on the pressure change in the supercooler 120 to determine the switching timing of the oil discharge mode.

[0096] In one embodiment, Figure 8 As shown, a lubricating oil separation method is proposed, which is applied to a controller of any of the above temperature regulating devices, and the method includes:

[0097] S100, when a separation start signal is received, the transport pipeline is controlled to be turned on.

[0098] S200, controlling the pump to start, pumping the mixture to be separated in the evaporator into the subcooler, so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

[0099] The separation start signal may be a signal sent by the user to the temperature control device through a button or remote transmission. When the separation start signal is received, it means that the oil-fluorine mixture in the evaporator needs to be separated.

[0100] In one embodiment, Fig. 9 As shown, the method also includes:

[0101] S300, controlling the exhaust pipe between the subcooler and the compressor to be connected.

[0102] S400, when the temperature difference between the two ends of the main flow path pipeline in the transport subcooler is less than a preset temperature difference threshold, turn off the pump.

[0103] In one embodiment, Fig. 9 As shown, the method also includes:

[0104] S500, after a preset exhaust time period, the exhaust pipe is controlled to be blocked, and the oil discharge pipe between the subcooler and the compressor is controlled to be connected.

[0105] S700, when the liquid level in the subcooler is less than a preset liquid level threshold, or the liquid pressure in the oil drain pipeline is less than a preset liquid pressure threshold, controlling the oil drain pipeline to be blocked.

[0106] In one embodiment, Fig. 9 As shown, after S500, the method further includes:

[0107] S600, controlling the pressurized pipeline between the subcooler and the oil separator to be connected so that the oil separator delivers high-pressure gas to the subcooler, and the liquid in the subcooler is discharged into the compressor through the oil discharge pipeline under the action of the high-pressure gas.

[0108] It should be noted that the specific lubricating oil separation process and the working mode of the temperature regulating device have been described in detail in the above temperature regulating device embodiment and will not be repeated in the lubricating oil separation method embodiment.

[0109] Based on the same inventive concept, the embodiment of the present application also provides a lubricating oil separation device for implementing the lubricating oil separation method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more lubricating oil separation device embodiments provided below can refer to the limitations of the lubricating oil separation method above, and will not be repeated here.

[0110] In an exemplary embodiment, Fig.10 As shown, a lubricating oil separation device 900 is provided, comprising: a pipeline control module 910 and a pump control module 920, wherein:

[0111] The pipeline control module 910 is used to control the transport pipeline to be connected when receiving the separation start signal.

[0112] The pump control module 920 is used to control the start of the pump to pump the mixture to be separated in the evaporator into the subcooler so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

[0113] In one embodiment, the lubricating oil separation device 900 is also used to control the conduction of the exhaust pipe between the subcooler and the compressor, and to shut down the pump when the temperature difference between the two ends of the main flow pipe in the subcooler is less than a preset temperature difference threshold.

[0114] In one embodiment, the lubricating oil separation device 900 is also used to control the blocking of the exhaust pipe after a preset exhaust time period, and to control the conduction of the oil drain pipe between the subcooler and the compressor. When the liquid level in the subcooler is less than a preset liquid level threshold, or the liquid pressure in the oil drain pipe is less than a preset liquid pressure threshold, the oil drain pipe is controlled to be blocked.

[0115] In one embodiment, the lubricating oil separation device 900 is also used to control the conduction of the pressurized pipeline between the subcooler and the oil separator so that the oil separator delivers high-pressure gas to the subcooler, and the liquid in the subcooler is discharged into the compressor through the oil drain pipeline under the action of the high-pressure gas.

[0116] Each module in the above lubricating oil separation device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0117] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig.11 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a lubricating oil separation method is implemented.

[0118] Those skilled in the art will understand that Fig.11 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0119] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above lubricating oil separation method embodiment when executing the computer program.

[0120] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above lubricating oil separation method embodiment are implemented.

[0121] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps in the above lubricating oil separation method embodiment when executed by a processor.

[0122] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0123] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0124] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0125] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A temperature regulating device, characterized in that: The temperature regulating equipment includes a condenser, a subcooler, a pump, an evaporator and a compressor; The condenser, the subcooler, the evaporator and the compressor are connected by a main flow pipeline, and the temperature is adjusted by the refrigerant in the main flow pipeline; The evaporator is connected to the subcooler through a transport pipeline. The pump is arranged in the transport pipeline and is used to pump the mixture to be separated in the evaporator into the subcooler so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

2. The temperature regulating device according to claim 1, characterized in that: The temperature regulating device further comprises a first valve. The subcooler is connected to the compressor via an exhaust pipe, and the first valve is arranged on the exhaust pipe.

3. The temperature regulating device according to claim 1, characterized in that: The temperature regulating device further comprises a second valve, the subcooler is connected to the compressor via an oil drain pipeline, and the second valve is arranged on the oil drain pipeline.

4. The temperature regulating device according to claim 1, characterized in that: The temperature regulating device also includes an oil separator and a third valve. The oil separator is arranged in the main flow pipeline between the compressor and the condenser. The oil separator is connected to the subcooler through a pressurized pipeline. The third valve is arranged in the pressurized pipeline.

5. The temperature regulating device according to claim 1, characterized in that: The temperature regulating device further comprises a controller connected to the pump.

6. The temperature regulating device according to claim 5, characterized in that: The temperature regulating device further comprises a first temperature detection device and a second temperature detection device respectively disposed at two ends of the main flow path pipeline in the subcooler, and the first temperature detection device and the second temperature detection device are both connected to the controller; The first temperature detection device is used to detect a first temperature of a first end of a main flow path pipeline in the subcooler and send the temperature to the controller, and the second temperature detection device is used to detect a second temperature of a second end of a main flow path pipeline in the subcooler and send the temperature to the controller; The controller is used to control the working state of the pump according to the first temperature and the second temperature.

7. The temperature regulating device according to claim 3, characterized in that: The temperature regulating device further comprises a controller connected to the second valve.

8. The temperature regulating device according to claim 7, characterized in that: The temperature regulating device further comprises a liquid level detection device disposed in the subcooler, wherein the liquid level detection device is connected to the controller; The liquid level detection device is used to detect the liquid level in the subcooler and send it to the controller; The controller is used to control the working state of the second valve according to the liquid level.

9. The temperature regulating device according to claim 7, characterized in that: The temperature regulating device further comprises a pressure detection device disposed in the oil discharge pipeline, and the pressure detection device is connected to the controller; The pressure detection device is used to detect the liquid pressure in the oil discharge pipeline and send it to the controller; The controller is used to control the working state of the second valve according to the liquid pressure.

10. The temperature adjustment device according to any one of claims 1 to 9, characterized in that: The temperature regulating device further includes an expansion valve, which is disposed in a main flow pipe between the subcooler and the evaporator.

11. A lubricating oil separation method, characterized in that: Applied to the temperature regulating device described in any one of 1 to 10, the method comprises: When receiving a separation start signal, controlling the transport pipeline to be turned on; The pump is controlled to start and the mixture to be separated in the evaporator is pumped into the subcooler, so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

12. The method according to claim 11, characterized in that The method further comprises: Controlling the conduction of the exhaust pipe between the subcooler and the compressor; When the temperature difference between the two ends of the main flow path pipeline in the transport subcooler is less than a preset temperature difference threshold, the pump is turned off.

13. The method according to claim 12, characterized in that After shutting down the pump, the method further comprises: After a preset exhaust time period, the exhaust pipe is controlled to be blocked, and the oil discharge pipe between the subcooler and the compressor is controlled to be connected; When the liquid level in the subcooler is less than a preset liquid level threshold, or the liquid pressure in the oil drain pipeline is less than a preset liquid pressure threshold, the oil drain pipeline is controlled to be blocked.

14. The method according to claim 13, characterized in that After controlling the oil discharge pipeline between the subcooler and the compressor to be connected, the method further includes: The pressurized pipeline between the subcooler and the oil separator is controlled to be connected so that the oil separator delivers high-pressure gas to the subcooler, and the liquid in the subcooler is discharged into the compressor through the oil discharge pipeline under the action of the high-pressure gas.

15. A lubricating oil separation device, applied to the temperature regulating device described in any one of 1 to 10, characterized in that: The device comprises: A pipeline control module, used to control the transport pipeline to be connected when receiving a separation start signal; The pump control module is used to control the start of the pump to pump the mixture to be separated in the evaporator into the subcooler so that the mixture to be separated exchanges heat with the main flow pipeline in the subcooler.

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