Compressor structure, radar equipment and control method

Abstract

The invention provides a compressor structure, radar equipment and a control method. The compressor structure comprises a compressor; a condenser; an evaporator; one end of the high-pressure pipeline is connected with an air outlet of the compressor, and the other end of the high-pressure pipeline is connected with the condenser; a high-pressure sensor for measuring the pressure of the high-pressure pipeline is arranged on the high-pressure pipeline; one end of the low-pressure pipeline is connected with an air inlet of the compressor, the other end of the low-pressure pipeline is connected with the evaporator, and a low-pressure sensor used for measuring the pressure of the low-pressure pipeline is arranged on the low-pressure pipeline; one end of the balance pipeline is connected with the condenser, and the other end of the balance pipeline is connected with the evaporator; and the control module controls the control valve group according to the change rate of the difference value of the pressure values of the high-pressure sensor and the low-pressure sensor, so that the control valve group adjusts the refrigerant flow of the balance pipeline, and the technical problem that a compressor of radar equipment in the related technology is inconvenient to frequently and quickly start is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor structure, radar equipment and a control method. Background Art

[0002] At present, radar devices are electronic devices, and radar liquid cooling sources are used to cool radar electronic equipment. Radar electronic equipment has the characteristics of instantaneous transmission power and instantaneous start and stop. The radar liquid cooling source needs to maintain the start and stop state according to the transmission power of the electronic equipment, shorten the downtime of the radar liquid cooling source, and achieve rapid startup.

[0003] When the compression refrigeration system is operating normally, the low pressure of the compressor is 0.4Mpa to 0.6Mpa, while the high pressure can reach 1.8Mpa to 2.2Mpa. When the compression refrigeration system is just shut down, the pressure difference between the high and low pressures of the compressor is very large. At present, the compressor of the radar compression refrigeration liquid cooling system adopts a control strategy of starting six and stopping three to ensure the balance of high and low pressures of the refrigeration system and the oil level of the compressor. Because of this control strategy, when the radar is started again, the compressor may still be in the three-minute stop time, resulting in the liquid cooling system being unable to immediately cool down the radar electronic equipment.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a compressor structure, a radar device and a control method to solve the technical problem that the compressor of the radar device in the related art is not convenient for frequent and quick start.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a compressor structure is provided, including: a compressor; a condenser; an evaporator; a high-pressure pipeline, one end of the high-pressure pipeline is connected to the air outlet of the compressor, and the other end of the high-pressure pipeline is connected to the condenser; a high-pressure sensor for measuring the pressure of the high-pressure pipeline is arranged on the high-pressure pipeline; a low-pressure pipeline, one end of the low-pressure pipeline is connected to the air inlet of the compressor, and the other end of the low-pressure pipeline is connected to the evaporator, and a low-pressure sensor for measuring the pressure of the low-pressure pipeline is arranged on the low-pressure pipeline; a balancing pipeline, one end of the balancing pipeline is connected to the condenser, and the other end of the balancing pipeline is connected to the evaporator; a control module, including a control valve group arranged on the balancing pipeline, and the control module controls the control valve group according to the change rate of the difference between the pressure values ​​of the high-pressure sensor and the low-pressure sensor, so that the control valve group adjusts the refrigerant flow of the balancing pipeline.

[0007] Furthermore, the control valve group includes: a mechanical throttle valve, which controls the on-off of the balancing pipeline according to the suction temperature and suction pressure of the compressor; a switch valve, which is connected in parallel with the mechanical throttle valve, and controls the on-off of the balancing pipeline according to the rate of change of the difference in pressure values ​​between the high-pressure sensor and the low-pressure sensor.

[0008] Furthermore, the control valve group includes a regulating valve, which controls the opening of the balance pipeline according to the change rate of the difference between the pressure values ​​of the high-pressure sensor and the low-pressure sensor.

[0009] Furthermore, the compressor structure also includes: a liquid storage tank for storing refrigerant; wherein the balancing pipeline includes a first balancing pipeline and a second balancing pipeline; one end of the first balancing pipeline is connected to the condenser, and the other end of the first balancing pipeline is connected to the liquid storage tank; the control valve group is arranged on the first balancing pipeline; one end of the second balancing pipeline is connected to the liquid storage tank, and the other end of the second balancing pipeline is connected to the evaporator.

[0010] Furthermore, a refill valve for controlling the on-off of the second balancing pipeline is provided on the second balancing pipeline; the control module is connected to the refill valve signal, and the control module controls the opening and closing of the refill valve according to the condensing temperature and evaporating temperature of the compressor structure.

[0011] Furthermore, the compressor structure also includes a reflux pipeline, one end of which is connected to the second balancing pipeline between the liquid replenishment valve and the evaporator, and the other end of the reflux pipeline is connected to the liquid storage tank; a liquid return valve for controlling the on-off of the reflux pipeline is provided on the reflux pipeline; the control module is connected to the liquid return valve signal, and the control module controls the opening and closing of the liquid return valve according to the condensing temperature and evaporating temperature of the compressor structure.

[0012] Furthermore, the compressor structure also includes a siphon pipeline, one end of which is connected to the liquid storage tank, and the other end of which is connected to the condenser; a siphon valve for controlling the siphon pipeline is provided on the siphon pipeline, and the control module is connected to the siphon valve signal. The control module controls the opening and closing of the siphon valve according to the difference in pressure values ​​between the high-pressure sensor and the low-pressure sensor.

[0013] A radar device comprises a compressor structure, wherein the compressor structure is the above-mentioned compressor structure.

[0014] A control method is applicable to the above-mentioned compressor structure, and the control method comprises: when the compressor of the compressor structure is shut down, recording the high pressure value Phigh pressure of the high pressure sensor of the compressor structure and the low pressure value Plow pressure of the low pressure sensor of the compressor structure; calculating the high and low pressure difference △P=Phigh pressure-Plow pressure; calculating the pressure difference balance rate R△P= / (t2-t1); wherein △Pt1 is the high and low pressure difference at the previous moment; △Pt2 is the high and low pressure difference at the next moment; t2-t1 is the time difference between the next moment and the previous moment; wherein the pressure difference balance rate R△P is the change rate of the difference between the pressure values ​​of the high pressure sensor and the low pressure sensor; The control module of the compressor structure controls the control valve group according to the change rate of the difference between the pressure values ​​of the high-pressure sensor and the low-pressure sensor, so that the control valve group adjusts the refrigerant flow of the balance pipeline.

[0015] Furthermore, the method for controlling the control valve group includes: setting a switch valve on the balance pipeline to control the on-off of the balance pipeline; when R △P >R 速率1 When the switch valve is F 初始 +△F frequency adjustment on and off; when R △P <R 速率1 When the switch valve is F 初始 -△F frequency adjustment on and off; when R △P <R 速率2 When the switch valve is closed, the liquid storage tank of the compressor structure replenishes refrigerant to the evaporator; 速率1、 R 速率2 is the default value; F 初始、 △F is the frequency threshold for opening and closing of the switch valve.

[0016] Furthermore, the method for controlling the control valve group includes: setting a regulating valve for controlling the opening of the balancing pipeline on the balancing pipeline; when the compressor is stopped, the regulating valve increases the preset opening on the basis of the initial opening; and detecting R △P When R △P >R 速率3 , the regulating valve continues to increase the preset opening; when R △P <R 速率4 The regulating valve is reset and opened to the initial opening.

[0017] Furthermore, the control method further includes: providing a liquid storage tank for storing refrigerant, the balancing pipeline is connected to the liquid storage tank to pass the refrigerant to the evaporator of the compressor structure, and a siphon valve is provided on the balancing pipeline between the liquid storage tank and the evaporator; detecting the high and low pressure difference △P, when △P<△P 虹吸效应 When the siphon valve is closed, the siphon valve is closed; otherwise, the siphon valve is opened to suck the refrigerant into the condenser.

[0018] Beneficial effects: One end of the high-pressure pipeline of the compressor structure of the present invention is connected to the air outlet of the compressor, and the other end of the high-pressure pipeline is connected to the condenser; a high-pressure sensor for measuring the pressure of the high-pressure pipeline is arranged on the high-pressure pipeline; a low-pressure pipeline, one end of the low-pressure pipeline is connected to the air inlet of the compressor, and the other end of the low-pressure pipeline is connected to the evaporator, and a low-pressure sensor for measuring the pressure of the low-pressure pipeline is arranged on the low-pressure pipeline; a balancing pipeline, one end of the balancing pipeline is connected to the condenser, and the other end of the balancing pipeline is connected to the evaporator; a control module, including a control valve group arranged on the balancing pipeline, and the control module controls the control valve group according to the change rate of the difference between the pressure values ​​of the high-pressure sensor and the low-pressure sensor, so that the control valve group adjusts the refrigerant flow of the balancing pipeline. With the above arrangement, when the compressor is turned on, the pressure in the system is quickly balanced by the control valve group. The control module controls the control valve group according to the rate of change of the difference between the pressure values ​​of the high-pressure sensor and the low-pressure sensor to avoid shock to the system caused by an overly fast balancing process, thereby ensuring that the system quickly achieves pressure balance, so that the compressor can perform the next compression action as soon as possible, solving the technical problem that the compressor of the radar equipment is not convenient for frequent and quick start-up. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of an embodiment of a compressor structure adopted in an embodiment of the present invention; Figure 2 is a structural schematic diagram of another embodiment of the compressor structure adopted in an embodiment of the present invention; Figure 3 is a flow chart of an embodiment of a control method adopted in an embodiment of the present invention; Figure 4 It is a flowchart of another embodiment of the control method adopted in the embodiment of the present invention.

[0020] The above drawings include the following reference numerals: 1. Compressor; 2. Condenser; 3. Evaporator; 4. High-pressure pipeline; 41. High-pressure sensor; 5. Low-pressure pipeline; 51. Low-pressure sensor; 6. Balance pipeline; 61. First balance pipeline; 62. Second balance pipeline; 621. Liquid replenishment valve; 63. Return pipeline; 631. Liquid return valve; 64. Siphon pipeline; 641. Siphon valve; 71. Mechanical throttle valve; 72. Switch valve; 73. Regulating valve; 8. Liquid storage tank. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] See also Figures 1 to 4 According to an embodiment of the present invention, a compressor structure is provided, including: a compressor 1; a condenser 2; an evaporator 3; a high-pressure pipeline 4, one end of which is connected to the air outlet of the compressor 1, and the other end of which is connected to the condenser 2; a high-pressure sensor 41 for measuring the pressure of the high-pressure pipeline 4 is provided on the high-pressure pipeline 4; a low-pressure pipeline 5, one end of which is connected to the air inlet of the compressor 1, and the other end of which is connected to the evaporator 3, and a low-pressure sensor 51 for measuring the pressure of the low-pressure pipeline 5 is provided on the low-pressure pipeline 5; a balancing pipeline 6, one end of which is connected to the condenser 2, and the other end of which is connected to the evaporator 3; a control module, including a control valve group arranged on the balancing pipeline 6, and the control module controls the control valve group according to the change rate of the difference between the pressure values ​​of the high-pressure sensor 41 and the low-pressure sensor 51, so that the control valve group adjusts the refrigerant flow of the balancing pipeline 6. With the above arrangement, when the compressor is turned on, the pressure in the system is quickly balanced by the control valve group. The control module controls the control valve group according to the rate of change of the difference between the pressure values ​​of the high-pressure sensor 41 and the low-pressure sensor 51, so as to avoid the impact on the system caused by the balancing process being too fast, thereby ensuring that the system quickly achieves pressure balance, so that the compressor can perform the next compression action as soon as possible, solving the technical problem that the compressor of the radar equipment is not convenient for frequent and quick start-up.

[0023] In the compressor structure of this embodiment, see Figure 1 The control valve group includes: a mechanical throttle valve 71, which controls the on-off of the balance pipeline 6 according to the suction temperature and suction pressure of the compressor 1; a switch valve 72, which is connected in parallel with the mechanical throttle valve 71, and controls the on-off of the balance pipeline 6 according to the change rate of the difference between the pressure values ​​of the high-pressure sensor 41 and the low-pressure sensor 51. In this way, by controlling the refrigerant flow rate of the balance flowing through the solenoid valve, by controlling the on-off of the solenoid valve at a certain frequency, the effect of balancing the pressure difference and throttling is achieved, and no refrigerant shock beyond the range of affecting the system operation is generated.

[0024] In the compressor structure of this embodiment, see Figure 2The control valve group includes a regulating valve 73, which controls the opening of the balancing pipeline 6 according to the change rate of the difference between the pressure values ​​of the high-pressure sensor 41 and the low-pressure sensor 51. In this way, by controlling the balance of the refrigerant flow through the solenoid valve and controlling the opening of the regulating valve 73, the effects of balancing the pressure difference and throttling are achieved without generating a refrigerant shock that exceeds the range of affecting the system operation.

[0025] See also Figure 1 , Figure 2 In the compressor structure of the present embodiment, the compressor structure also includes: a liquid storage tank 8 for storing refrigerant; wherein the balancing pipeline 6 includes a first balancing pipeline 61 and a second balancing pipeline 62; one end of the first balancing pipeline 61 is connected to the condenser 2, and the other end of the first balancing pipeline 61 is connected to the liquid storage tank 8; the control valve group is arranged on the first balancing pipeline 61; one end of the second balancing pipeline 62 is connected to the liquid storage tank 8, and the other end of the second balancing pipeline 62 is connected to the evaporator 3.

[0026] Specifically, when the environment is low or the radar transmission power is low, the refrigeration system has too much refrigerant and the system load is large. The liquid storage tank is used to store cold refrigerant to reduce the system load and maintain the reliability of the refrigeration system when the environment temperature rises or the radar transmission power is high. When the ambient temperature rises or the radar transmission power is high, the refrigerant in the liquid storage tank 8 is released to increase the system load and meet the liquid cooling requirements of the radar electronic equipment.

[0027] In the compressor structure of this embodiment, see Figure 1 , Figure 2 The second balancing pipeline 62 is provided with a liquid replenishing valve 621 for controlling the on-off of the second balancing pipeline 62; the control module is connected to the liquid replenishing valve 621 by signal, and the control module controls the opening and closing of the liquid replenishing valve 621 according to the condensing temperature and evaporating temperature of the compressor structure. In this way, liquid is replenished into the evaporator 3 through the condensing temperature and evaporating temperature, so that the evaporator 3 can be pre-cooled, thereby quickly starting the compressor.

[0028] In the compressor structure of this embodiment, see Figure 1 , Figure 2 The compressor structure also includes a reflux pipeline 63, one end of which is connected to the second balancing pipeline 62 between the liquid replenishing valve 621 and the evaporator 3, and the other end of the reflux pipeline 63 is connected to the liquid storage tank 8; a liquid return valve 631 for controlling the on-off of the reflux pipeline is provided on the reflux pipeline 63; the control module is connected to the liquid return valve 631 by signal, and the control module controls the opening and closing of the liquid return valve 631 according to the condensing temperature and evaporating temperature of the compressor structure.

[0029] Specifically, the control module theoretically calculates the system's P according to the T condensation temperature and T evaporation temperature detected by the system. H , P L, and then compared with the actual test P 高压 , P 低压 By comparison, if the theoretical calculated value is higher than the actual test value, it means that the system needs to supplement refrigerant, and the liquid replenishment valve 621 and the liquid return valve 631 are opened; if the theoretical calculated value is lower than the actual test value, it means that the refrigerant needs to be stored, and the liquid return valve 631 is opened and the liquid replenishment valve 621 is closed.

[0030] In the compressor structure of this embodiment, see Figure 1 , Figure 2 The compressor structure also includes a siphon pipeline 64, one end of which is connected to the liquid storage tank 8, and the other end of the siphon pipeline 64 is connected to the condenser 2; a siphon valve 641 for controlling the siphon pipeline 64 is provided on the siphon pipeline 64, and the control module is connected to the siphon valve 641 signal. The control module controls the opening and closing of the siphon valve 641 according to the difference between the pressure values ​​of the high-pressure sensor 41 and the low-pressure sensor 51.

[0031] The radar device of this embodiment includes a compressor structure, and the compressor structure is the above-mentioned compressor structure.

[0032] The control method of this embodiment quickly balances the high and low pressures of the system and stores cold in the refrigerant storage of the refrigeration system. After the compressor is started again, the refrigeration system is controlled to release the stored cold refrigerant, and the coolant is cooled in the early stage of refrigeration capacity improvement. The refrigerant release amount is controlled in conjunction with the radar transmission power to quickly meet the radar transmission cooling requirements.

[0033] The control method of this embodiment is applicable to the above-mentioned compressor structure, and the control method includes: when the compressor 1 of the compressor structure is shut down, recording the high pressure value Phigh pressure of the high pressure sensor 41 of the compressor structure and the low pressure value Plow pressure of the low pressure sensor 51 of the compressor structure; calculating the high and low pressure difference △P=Phigh pressure-Plow pressure; calculating the pressure difference balance rate R△P=△Pt2-△Pt1 / (t2-t1); wherein △Pt1 is the high and low pressure difference at the previous moment; △Pt2 is the high and low pressure difference at the next moment; t2-t1 is the time difference between the next moment and the previous moment; wherein the pressure difference balance rate R△P is the change rate of the difference between the pressure values ​​of the high pressure sensor 41 and the low pressure sensor 51; the control module of the compressor structure controls the control valve group according to the change rate of the difference between the pressure values ​​of the high pressure sensor 41 and the low pressure sensor 51, so that the control valve group adjusts the refrigerant flow of the balance pipeline 6, thereby reducing the speed of the balance pressure and avoiding the instantaneous liquid hammer at the suction end of the compressor secondary startup caused by rapid balance.

[0034] In the control method of this embodiment, the method of controlling the control valve group includes: setting a switch valve 72 on the balance pipeline 6 to control the on-off of the balance pipeline 6; when R △P >R速率1 When the switch valve 72 is turned on, 初始 +△F frequency adjustment on and off; when R △P <R 速率1 When the switch valve 72 is turned on, 初始 -△F frequency adjustment on and off; when R △P <R 速率2 When the switch valve 72 is closed, the liquid storage tank 8 of the compressor structure replenishes the refrigerant to the evaporator 3; wherein R 速率1、 R 速率2 is the default value; F 初始、 ΔF is the frequency threshold of the opening and closing of the switch valve 72 .

[0035] Specifically, the switch valve 72 is controlled to close in advance to avoid the high and low pressure difference being too small, the refrigerant migration, and the failure of the second start of the compressor. The liquid replenishing valve 621 is opened in advance, so that the low-temperature refrigerant in the liquid storage tank enters the evaporator in advance to absorb heat and cool down. When the compressor is started again, low-temperature coolant can be quickly provided to cool the radar.

[0036] In the control method of this embodiment, the method of controlling the control valve group includes: setting a regulating valve 73 on the balancing pipeline 6 to control the opening of the balancing pipeline 6; when the compressor is stopped, the regulating valve 73 increases the preset opening on the basis of the initial opening; and detecting R △P When R △P >R 速率3 , the regulating valve 73 continues to increase the preset opening; when R △P <R 速率4 When the regulating valve 73 is reset, it returns to the initial opening.

[0037] Specifically, when the system is equipped with a regulating valve 73, the regulating valve 73 is an adjustable valve with an opening degree. When the compressor is turned on, the regulating valve 73 adjusts the flow rate according to the suction superheat and opens to a certain opening degree. When the compressor is stopped, the regulating valve 73 with an opening degree adjustable is opened according to the current opening degree + D% (preset opening degree), and at the same time detects R △P When R △P >R 速率3 , the regulating valve 73 continues to open according to D%. As the opening of the regulating valve 73 increases, R △P will gradually decrease when R △P <R 速率4 , the regulating valve 73 is reset and opened to the initial opening so that when the compressor is started again, it can cool quickly and the liquid replenishing valve 621 is opened synchronously.

[0038] In the control method of this embodiment, the control method further includes: providing a liquid storage tank 8 for storing refrigerant, the balancing pipeline 6 is connected to the liquid storage tank 8 to pass the refrigerant to the evaporator 3 of the compressor structure, and a siphon valve 641 is provided on the balancing pipeline 6 between the liquid storage tank 8 and the evaporator 3; detecting the high and low pressure difference △P, when △P<△P 虹吸效应 otherwise, the siphon valve 641 is opened to suck the refrigerant into the condenser 2.

[0039] Specifically, the refrigerant high-speed siphon effect generated when the pressure is balanced uses the high-speed flowing refrigerant to suck the low-speed and low-temperature refrigerant into the condenser to evaporate and absorb heat, thereby lowering the condenser temperature. The low-speed and low-temperature refrigerant is sucked into the condenser to evaporate and absorb heat, thereby lowering the condenser temperature. The secondary start-up can quickly achieve a cooling effect.

[0040] The control method of this embodiment is described as follows: The heat dissipation of radar electronic equipment is closely related to the radar load power, and the radar load is related to the radar transmission power. Depending on the operating conditions, the radar has the characteristics of transmitting power instantly reaching a peak from static, or instantly static from a peak. The radar liquid cooling source needs to be controlled according to the radar power. After the radar is static, the liquid cooling source is shut down, and the refrigeration system is controlled to achieve the liquid cooling source to meet the conditions for rapid restart.

[0041] When the compression refrigeration system is operating normally, the low pressure of the compressor is 0.4Mpa to 0.6Mpa, while the high pressure can reach 1.8Mpa to 2.2Mpa. When the compression refrigeration system is just shut down, the pressure difference between the high and low pressures of the compressor is very large. At present, the compressor of the radar compression refrigeration liquid cooling system adopts a control strategy of starting six and stopping three to ensure the balance of high and low pressures of the refrigeration system and the oil level of the compressor. Because of this control strategy, when the radar is started again, the compressor may still be in the three-minute stop time, resulting in the liquid cooling system being unable to immediately cool down the radar electronic equipment.

[0042] This control method combines the pressure and temperature of the refrigeration system to skip the three-minute stop strategy after the compressor stops, and achieves the conditions for rapid restart. Figure 1 , wherein the regulating valve 73 can be equivalent to replacing the mechanical throttle valve 71 and the switch valve 72.

[0043] When the system is installed with mechanical throttle valve 71 and switch valve 72, the compressor stops and mechanical throttle valve 71 is automatically closed according to the suction temperature and suction pressure conditions of the compressor. At this time, the high and low pressures at the exhaust end of the compressor cannot be balanced, and it is necessary to balance the high and low pressures by adjusting the switch valve 72. The switch valve 72 is turned on to achieve high and low pressure balance, but at this time, keeping the switch valve 72 turned on will cause a large refrigerant shock to the high and low pressure balance, causing damage to the refrigeration system. If the impact of the refrigerant shock is to be resolved and the pressure difference is to be balanced, it is necessary to control the balance of the refrigerant flow through the solenoid valve and control the on and off of the solenoid valve at a certain frequency to achieve the effect of balancing the pressure difference and throttling without generating refrigerant shock that exceeds the range of system operation. The control system controls the switch valve 72 to adjust the on and off according to the initial frequency F, and at the same time calculates the high and low pressure difference of the compressor, △P=P 高压 -P 低压 , R △P =(△Pt2-△Pt1) / (t2-t1), △Pt1, △Pt2 are the high and low pressure differences at t1 and t2, t1 is the previous moment, t2 is the next moment, the high and low pressure difference at the previous moment is greater than that at the next moment, when R △P >R 速率1 When the switch valve 72 is turned on, 初始 +△F frequency regulation on and off, quickly balance the high and low pressure difference of the compressor, as the frequency of the switch valve 72 increases, R △P will gradually decrease; when R △P <R 速率1 When the switch valve 72 is turned on, 初始 -△F frequency regulation on and off, reduce the speed of pressure balance, avoid rapid balance leading to instantaneous liquid impact at the suction end of the compressor when it is restarted. 速率2 When the compressor is started again, the switch valve 72 is closed and the liquid replenishing valve 621 is opened. The switch valve 72 is closed in advance to prevent the high and low pressure difference from being too small, the refrigerant migration, and the failure of the compressor to start again. The liquid replenishing valve 621 is opened in advance to allow the low-temperature refrigerant in the liquid storage tank to enter the evaporator in advance to absorb heat and cool down. When the compressor is started again, low-temperature coolant can be quickly provided to cool the radar.

[0044] When the system is equipped with regulating valve 73, regulating valve 73 is an adjustable valve with an opening degree. When the compressor is turned on, regulating valve 73 adjusts the flow rate according to the suction superheat and opens to a certain opening degree. When the compressor is stopped, regulating valve 73 is an adjustable valve with an opening degree that is opened according to the current opening degree + D% (preset opening degree) and detects R at the same time. △P When R △P >R 速率3 , the regulating valve 73 continues to open according to D%. As the opening of the regulating valve 73 increases, R △P will gradually decrease when R △P <R 速率4, the regulating valve 73 is reset and opened to the initial opening so that when the compressor is started again, it can cool quickly and the liquid replenishing valve 621 is opened synchronously.

[0045] After the compressor stops, the control module opens the siphon valve 641 while controlling the actions of the two installed valves, and detects the change of △P. When △P<△P 虹吸效应 , siphon valve 641 is closed. Siphon valve 641 connects the liquid storage tank and the front end of the condenser, and a one-way valve is installed at the rear end of the condenser to prevent the refrigerant from flowing back. After the siphon valve 641 is opened, the high-speed siphon effect of the refrigerant generated when the pressure is balanced uses the high-speed flowing refrigerant to suck the low-speed and low-temperature refrigerant into the condenser for evaporation and heat absorption, thereby lowering the condenser temperature. The low-speed and low-temperature refrigerant is sucked into the condenser for evaporation and heat absorption, thereby lowering the condenser temperature. The secondary start-up can quickly achieve a cooling effect.

[0046] When the environment is low or the radar transmission power is low, the refrigeration system has too much refrigerant and the system load is large. The liquid storage tank is used to store cold refrigerant to reduce the system load and maintain the reliability of the refrigeration system when the temperature is low or the radar transmission power is low. When the ambient temperature rises or the radar transmission power is high, the refrigerant in the liquid storage tank 8 is released to increase the system load and meet the liquid cooling requirements of the radar electronic equipment. The control module theoretically calculates the system's P according to the T condensation temperature and T evaporation temperature detected by the system. H , P L , and then compared with the actual test P 高压 , P 低压 By comparison, if the theoretical calculated value is higher than the actual test value, it means that the system needs to supplement refrigerant, and the liquid replenishment valve 621 and the liquid return valve 631 are opened; if the theoretical calculated value is lower than the actual test value, it means that the refrigerant needs to be stored, and the liquid return valve 631 is opened and the liquid replenishment valve 621 is closed.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0049] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0050] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0051] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A compressor structure, characterized in that: include: Compressor (1); Condenser (2); Evaporator (3); a high-pressure pipeline (4), one end of the high-pressure pipeline (4) being connected to the air outlet of the compressor (1), and the other end of the high-pressure pipeline (4) being connected to the condenser (2); a high-pressure sensor (41) for measuring the pressure of the high-pressure pipeline (4) being provided on the high-pressure pipeline (4); a low-pressure pipeline (5), one end of the low-pressure pipeline (5) being connected to the air inlet of the compressor (1), the other end of the low-pressure pipeline (5) being connected to the evaporator (3), and the low-pressure pipeline (5) being provided with a low-pressure sensor (51) for measuring the pressure of the low-pressure pipeline (5); A balancing pipeline (6), one end of the balancing pipeline (6) being connected to the condenser (2), and the other end of the balancing pipeline (6) being connected to the evaporator (3); A control module comprises a control valve group arranged on the balancing pipeline (6), wherein the control module controls the control valve group according to the rate of change of the difference between the pressure values ​​of the high-pressure sensor (41) and the low-pressure sensor (51), so that the control valve group adjusts the refrigerant flow of the balancing pipeline (6).

2. The compressor structure according to claim 1, characterized in that: The control valve group comprises: a mechanical throttle valve (71), the mechanical throttle valve (71) controlling the on / off of the balance pipeline (6) according to the suction temperature and suction pressure of the compressor (1); An on-off valve (72), the on-off valve (72) being connected in parallel with the mechanical throttle valve (71), the on-off valve (72) controlling the on-off of the balancing pipeline (6) according to the rate of change of the difference between the pressure values ​​of the high-pressure sensor (41) and the low-pressure sensor (51).

3. The compressor structure according to claim 1, characterized in that: The control valve group comprises a regulating valve (73), and the regulating valve (73) controls the opening of the balancing pipeline (6) according to the rate of change of the difference between the pressure values ​​of the high-pressure sensor (41) and the low-pressure sensor (51).

4. The compressor structure according to claim 1, characterized in that: The compressor structure further comprises: A liquid storage tank (8) for storing refrigerant; The balancing pipeline (6) comprises a first balancing pipeline (61) and a second balancing pipeline (62); one end of the first balancing pipeline (61) is connected to the condenser (2), and the other end of the first balancing pipeline (61) is connected to the liquid storage tank (8); the control valve group is arranged on the first balancing pipeline (61); one end of the second balancing pipeline (62) is connected to the liquid storage tank (8), and the other end of the second balancing pipeline (62) is connected to the evaporator (3).

5. The compressor structure according to claim 4, characterized in that: The second balancing pipeline (62) is provided with a liquid replenishing valve (621) for controlling the on-off of the second balancing pipeline (62); the control module is connected to the liquid replenishing valve (621) by signal, and the control module controls the opening and closing of the liquid replenishing valve (621) according to the condensing temperature and the evaporating temperature of the compressor structure.

6. The compressor structure according to claim 5, characterized in that: The compressor structure further comprises a return pipeline (63), one end of the return pipeline (63) being connected to the second balancing pipeline (62) between the liquid replenishing valve (621) and the evaporator (3), and the other end of the return pipeline (63) being connected to the liquid storage tank (8); a liquid return valve (631) for controlling the on-off of the return pipeline is arranged on the return pipeline (63); the control module is connected to the liquid return valve (631) by signal, and the control module controls the opening and closing of the liquid return valve (631) according to the condensing temperature and the evaporating temperature of the compressor structure.

7. The compressor structure according to claim 6, characterized in that: The compressor structure further comprises a siphon pipeline (64), one end of the siphon pipeline (64) being connected to the liquid storage tank (8), and the other end of the siphon pipeline (64) being connected to the condenser (2); a siphon valve (641) for controlling the siphon pipeline (64) is provided on the siphon pipeline (64), the control module being connected to the siphon valve (641) by signal, and the control module controlling the opening and closing of the siphon valve (641) according to the difference between the pressure values ​​of the high-pressure sensor (41) and the low-pressure sensor (51).

8. A radar device comprising a compressor structure, characterized in that: The compressor structure is the compressor structure according to any one of claims 1 to 7.

9. A control method, applicable to the compressor structure according to any one of claims 1 to 7, characterized in that: The control method comprises: When the compressor (1) of the compressor structure is shut down, a high pressure value Phigh pressure of the high pressure sensor (41) of the compressor structure and a low pressure value Plow pressure of the low pressure sensor (51) of the compressor structure are recorded; and a high-low pressure difference ΔP=Phigh pressure-Plow pressure is calculated; Calculate the pressure difference balance rate R△P=(△Pt2-△Pt1) / (t2-t1); wherein △Pt1 is the high and low pressure difference at the previous moment; △Pt2 is the high and low pressure difference at the next moment; t2-t1 is the time difference between the next moment and the previous moment; wherein the pressure difference balance rate R△P is the rate of change of the difference between the pressure values ​​of the high pressure sensor (41) and the low pressure sensor (51); The control module of the compressor structure controls the control valve group according to the change rate of the difference between the pressure values ​​of the high-pressure sensor (41) and the low-pressure sensor (51), so that the control valve group adjusts the refrigerant flow of the balance pipeline (6).

10. The control method according to claim 9, characterized in that: The method of controlling the control valve group includes: A switch valve (72) for controlling the on / off of the balancing pipeline (6) is provided on the balancing pipeline (6); When R △P >R 速率1 When the switch valve (72) is in accordance with F 初始 +△F frequency adjustment on and off; When R △P <R 速率1 When the switch valve (72) is in accordance with F 初始 -△F frequency adjustment on and off; When R △P <R 速率2 When the switch valve (72) is closed, the liquid storage tank (8) of the compressor structure replenishes refrigerant to the evaporator (3); Among them, R 速率1、 R 速率2 is the default value; F 初始、 ΔF is the frequency threshold for the opening and closing of the switch valve (72).

11. The control method according to claim 10, characterized in that: The method of controlling the control valve group includes: A regulating valve (73) for controlling the opening of the balancing pipeline (6) is provided on the balancing pipeline (6); When the compressor is stopped, the regulating valve (73) increases the preset opening degree based on the initial opening degree; at the same time, the R △P When R △P >R 速率3 , the regulating valve (73) continues to increase the preset opening; When R △P <R 速率4 When the regulating valve (73) is reset, it is opened to the initial opening.

12. The control method according to claim 9, characterized in that: The control method further comprises: A liquid storage tank (8) for storing refrigerant is provided, the balancing pipeline (6) is connected to the liquid storage tank (8) so as to supply refrigerant to the evaporator (3) of the compressor structure, and a siphon valve (641) is provided on the balancing pipeline (6) between the liquid storage tank (8) and the evaporator (3); Detect high and low pressure difference △P, when △P<△P 虹吸效应 When the refrigerant is cooled, the siphon valve (641) is closed; otherwise, the siphon valve (641) is opened to suck the refrigerant into the condenser (2).

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