Compressor structure, radar device and control method

Abstract

The application provides a compressor structure, a radar device and a control method, and relates to the technical field of radar devices, and comprises a compressor, a condenser, an evaporator, a high-pressure pipeline, a low-pressure pipeline and a balance pipeline, wherein one end of the high-pressure pipeline is connected with an air outlet of the compressor, the other end of the high-pressure pipeline is connected with the condenser, a high-pressure sensor is arranged on the high-pressure pipeline and used for measuring the pressure of 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, a low-pressure sensor is arranged on the low-pressure pipeline and used for measuring the pressure of the low-pressure pipeline, one end of the balance pipeline is connected with the condenser, the other end of the balance pipeline is connected with the evaporator, and a control module controls a 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, and the technical problem that the compressor of the radar device in the prior art is not convenient for frequent and rapid starting is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a compressor structure, a radar device and a control method. BACKGROUND

[0002] At present, the radar device belongs to electronic equipment, and the radar liquid cooling source is used for cooling the radar electronic equipment. The radar electronic equipment has the characteristics of instant transmission power and instant start-stop. The radar liquid cooling source needs to keep the start-stop state according to the transmission power of the electronic equipment, shorten the shutdown time of the radar liquid cooling source, and achieve rapid start.

[0003] When the compression refrigeration system is in normal operation, the low pressure of the compressor is 0.4-0.6 MPa, and the high pressure can reach 1.8-2.2 MPa. When the compression refrigeration system is just shut down, the pressure difference between the high and low pressures of the compressor is large. At present, the compressor of the radar compression refrigeration liquid cooling system adopts a control strategy of opening for six minutes and stopping for three minutes to ensure the balance of the 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 that the liquid cooling system cannot immediately cool the radar electronic equipment.

[0004] Therefore, the prior art needs to be further developed. SUMMARY

[0005] The present application aims to overcome the above technical deficiencies, and provides a compressor structure, a radar device and a control method to solve the technical problem of the compressor of the radar device in the related art which is not convenient for frequent rapid start.

[0006] To achieve the above technical purpose, the present application adopts the following technical scheme: a compressor structure is provided, comprising: a compressor; a condenser; an evaporator; a high-pressure pipeline, one end of the high-pressure pipeline being connected with the gas outlet of the compressor, and the other end of the high-pressure pipeline being connected with the condenser; a high-pressure sensor is arranged on the high-pressure pipeline for measuring the pressure of the high-pressure pipeline; a low-pressure pipeline, one end of the low-pressure pipeline being connected with the gas inlet of the compressor, and the other end of the low-pressure pipeline being connected with the evaporator, a low-pressure sensor being arranged on the low-pressure pipeline for measuring the pressure of the low-pressure pipeline; a balance pipeline, one end of the balance pipeline being connected with the condenser, and the other end of the balance pipeline being connected with the evaporator; a control module, comprising a control valve group arranged on the balance pipeline, the control module controlling 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 as to make the control valve group adjust the refrigerant flow of the balance pipeline.

[0007] Further, the control valve group comprises a mechanical throttle valve, which controls the opening and closing of the balance pipeline according to the suction temperature and suction pressure of the compressor; and a switch valve, which is connected in parallel with the mechanical throttle valve and controls the opening and closing 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.

[0008] Further, the control valve group comprises an adjusting valve, which controls the opening degree 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] Further, the compressor structure further comprises a liquid storage tank for storing refrigerant; the balance pipeline comprises a first balance pipeline and a second balance pipeline; one end of the first balance pipeline is connected to the condenser, and the other end of the first balance pipeline is connected to the liquid storage tank; the control valve group is arranged on the first balance pipeline; one end of the second balance pipeline is connected to the liquid storage tank, and the other end of the second balance pipeline is connected to the evaporator.

[0010] Further, a liquid supplement valve for controlling the opening and closing of the second balance pipeline is arranged on the second balance pipeline; the control module is signal-connected with the liquid supplement valve, and controls the opening and closing of the liquid supplement valve according to the condensing temperature and the evaporating temperature of the compressor structure.

[0011] Further, the compressor structure further comprises a return pipeline, one end of the return pipeline is connected to the second balance pipeline between the liquid supplement valve and the evaporator, and the other end of the return pipeline is connected to the liquid storage tank; a liquid return valve for controlling the opening and closing of the return pipeline is arranged on the return pipeline; the control module is signal-connected with the liquid return valve, and controls the opening and closing of the liquid return valve according to the condensing temperature and the evaporating temperature of the compressor structure.

[0012] Further, the compressor structure further comprises a siphon pipeline, one end of the siphon pipeline is connected to the liquid storage tank, and the other end of the siphon pipeline is connected to the condenser; a siphon valve for controlling the siphon pipeline is arranged on the siphon pipeline; the control module is signal-connected with the siphon valve, and controls the opening and closing of the siphon valve according to the difference between the pressure values of the high-pressure sensor and the low-pressure sensor.

[0013] A radar device comprising the compressor structure.

[0014] A control method suitable for the compressor structure, the control method comprising: recording a high pressure value P high pressure of a high pressure sensor of the compressor structure and a low pressure value P low pressure of a low pressure sensor of the compressor structure when the compressor structure is shut down; calculating a high-low pressure difference △P=P high pressure -P low pressure; calculating a pressure difference balance rate R△P=△Pt2-△Pt1 / (t2-t1); wherein △Pt1 is a high-low pressure difference at a previous time; △Pt2 is a high-low pressure difference at a next time; t2-t1 is a time difference between the next time and the previous time; wherein the pressure difference balance rate R△P is a change rate of the difference between the pressure values of the high pressure sensor and the low pressure sensor.

[0015] 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.

[0016] Further, the method of controlling the control valve group comprises: setting a switch valve on the balance pipeline to control the opening and closing of the balance pipeline; when R △P >R 速率1 , the switch valve adjusts the opening and closing according to F 初始 +△F frequency; when R △P <R 速率1 , the switch valve adjusts the opening and closing according to F 初始 -△F frequency; when R △P <R 速率2 , the switch valve is closed, and the liquid tank of the compressor structure supplements the evaporator with refrigerant; wherein R 速率1、 R 速率2 is a preset value; F 初始、 △F is a frequency threshold value for opening and closing the switch valve.

[0017] Further, the method of controlling the control valve group comprises: setting a regulating valve on the balance pipeline to control the opening degree of the balance pipeline; when the compressor is shut down, the regulating valve increases a preset opening degree based on an initial opening degree; at the same time, the change of R △P is detected, when R △P >R 速率3 , the regulating valve continues to increase the preset opening degree; when R △P <R 速率4 , the regulating valve resets and reaches the initial opening degree.

[0018] Further, the control method further comprises: setting a liquid tank for storing refrigerant, the balance pipeline is connected with the liquid tank to introduce refrigerant to the evaporator of the compressor structure, and a siphon valve is arranged on the balance pipeline between the liquid tank and the evaporator; the high-low pressure difference △P is detected, when △P<△P 虹吸效应 , the siphon valve is closed; otherwise, the siphon valve is opened to suck refrigerant into the condenser.

[0019] Advantages:

[0020] One end of the high-pressure pipeline of the compressor structure of the present application is connected with the 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; a low-pressure pipeline, one end of the low-pressure pipeline is connected with the air inlet of the compressor, and the other end of the low-pressure pipeline is connected with the evaporator, a low-pressure sensor for measuring the pressure of the low-pressure pipeline is arranged on the low-pressure pipeline; a balance 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; a control module, including a control valve group arranged on the balance pipeline, 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. With the above arrangement, when the compressor is started, the control valve group quickly balances the pressure in the system, 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, to avoid the impact on the system caused by the too fast balancing process, so as to ensure that the system quickly realizes 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 rapid start. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic diagram of one embodiment of the compressor structure adopted by the embodiment of the present application;

[0022] Figure 2 is a structure schematic diagram of another embodiment of the compressor structure adopted by the embodiment of the present application;

[0023] Figure 3 is a flow schematic diagram of one embodiment of the control method adopted by the embodiment of the present application;

[0024] Figure 4 is a flow schematic diagram of another embodiment of the control method adopted by the embodiment of the present application.

[0025] Among them, the above drawings include the following reference signs:

[0026] 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 supplementing valve; 63, backflow pipeline; 631, liquid backflow valve; 64, siphon pipeline; 641, siphon valve; 71, mechanical throttling valve; 72, on-off valve; 73, regulating valve; 8, liquid storage tank. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work should belong to the scope of protection of the present application.

[0028] Referring to Figures 1 to 4 According to the embodiment of the present application, a compressor structure is provided, comprising: a compressor 1; a condenser 2; an evaporator 3; a high-pressure pipeline 4, one end of the high-pressure pipeline 4 being connected with an air outlet of the compressor 1, the other end of the high-pressure pipeline 4 being connected with the condenser 2; a high-pressure sensor 41 provided on the high-pressure pipeline 4 for measuring the pressure of the high-pressure pipeline 4; a low-pressure pipeline 5, one end of the low-pressure pipeline 5 being connected with an air inlet of the compressor 1, the other end of the low-pressure pipeline 5 being connected with the evaporator 3, a low-pressure sensor 51 provided on the low-pressure pipeline 5 for measuring the pressure of the low-pressure pipeline 5; a balance pipeline 6, one end of the balance pipeline 6 being connected with the condenser 2, the other end of the balance pipeline 6 being connected with the evaporator 3; a control module, comprising a control valve group provided on the balance pipeline 6, the control module controlling 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 as to make the control valve group adjust the refrigerant flow of the balance pipeline 6. With the above arrangement, when the compressor is started, the control valve group is used to quickly balance the pressure in the system, 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 as to avoid the impact on the system caused by the too fast balance process, thereby ensuring that the system quickly realizes pressure balance, so that the compressor can perform the next compression action as soon as possible, and the technical problem that the compressor of the radar device is not convenient for frequent and rapid start is solved.

[0029] In the compressor structure of the present embodiment, referring to Figure 1 The control valve group comprises: a mechanical throttling valve 71, which controls the on-off of the balance pipeline 6 according to the suction temperature and suction pressure of the compressor 1; and a switch valve 72, which is connected in parallel with the mechanical throttling 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, the refrigerant flow through the electromagnetic valve is controlled, and the on-off of the electromagnetic valve at a certain frequency is controlled, so as to realize the effects of balancing the pressure difference and throttling, and no refrigerant impact exceeding the system operation range is generated.

[0030] In the compressor structure of the present embodiment, referring to Figure 2, the control valve group includes an adjusting valve 73, which controls the opening degree of the balance pipeline 6 according to the rate of change of the pressure value difference between the high-pressure sensor 41 and the low-pressure sensor 51. In this way, by controlling the refrigerant flow through the electromagnetic valve, the effect of balancing the pressure difference and throttling is achieved by controlling the opening degree of the adjusting valve 73, and no refrigerant impact beyond the system operating range is generated.

[0031] Referring to Figure 1 、 Figure 2 , in the compressor structure of the embodiment, the compressor structure further includes a liquid storage tank 8 for storing refrigerant; the balance pipeline 6 includes a first balance pipeline 61 and a second balance pipeline 62; one end of the first balance pipeline 61 is connected to the condenser 2, and the other end of the first balance pipeline 61 is connected to the liquid storage tank 8; the control valve group is arranged on the first balance pipeline 61; one end of the second balance pipeline 62 is connected to the liquid storage tank 8, and the other end of the second balance pipeline 62 is connected to the evaporator 3.

[0032] Specifically, when the low-temperature environment or the radar transmission power is small, the refrigeration system has too much refrigerant and large system load, the cold refrigerant is stored in the liquid storage tank to reduce the system load and maintain the reliability of the refrigeration system when the low-temperature environment or the radar transmission power is small. When the ambient temperature rises or the radar transmission power is large, 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.

[0033] In the compressor structure of the embodiment, referring to Figure 1 、 Figure 2 , a liquid supplement valve 621 for controlling the on-off of the second balance pipeline 62 is arranged on the second balance pipeline 62; the control module is signal-connected with the liquid supplement valve 621, and the control module controls the opening and closing of the liquid supplement valve 621 according to the condensing temperature and the evaporating temperature of the compressor structure. In this way, the liquid is supplemented into the evaporator 3 through the condensing temperature and the evaporating temperature, so that the evaporator 3 can be pre-cooled, and the compressor can be quickly started.

[0034] In the compressor structure of the embodiment, referring to Figure 1 、 Figure 2 , the compressor structure further includes a backflow pipeline 63, one end of the backflow pipeline 63 is connected to the second balance pipeline 62 between the liquid supplement valve 621 and the evaporator 3, and the other end of the backflow pipeline 63 is connected to the liquid storage tank 8; a liquid return valve 631 for controlling the on-off of the backflow pipeline is arranged on the backflow pipeline 63; the control module is signal-connected with the liquid return valve 631, 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.

[0035] Specifically, the control module calculates the P H , P LThen compared with the actual test P 高压 P 低压 In comparison, if the theoretical calculated value is higher than the actual test value, it means that the system needs to be replenished with refrigerant. Open the liquid replenishment valve 621 and the liquid return valve 631. If the theoretical calculated value is lower than the actual test value, it means that refrigerant needs to be stored. Open the liquid return valve 631 and close the liquid replenishment valve 621.

[0036] In the compressor structure of this embodiment, see... Figure 1 , Figure 2 The compressor structure also includes a siphon pipe 64, one end of which is connected to the liquid storage tank 8, and the other end of which is connected to the condenser 2. A siphon valve 641 is provided on the siphon pipe 64 for controlling the siphon pipe 64. The control module is connected to the siphon valve 641 by signal. The control module controls the opening and closing of the siphon valve 641 according to the pressure difference between the high pressure sensor 41 and the low pressure sensor 51.

[0037] The ground radar device of this embodiment includes a compressor structure, which is the compressor structure described above.

[0038] The control method in this embodiment quickly balances the high and low pressures of the system, stores refrigerant in the refrigeration system, and releases the stored refrigerant after the compressor restarts. During the initial cooling capacity enhancement phase of startup, the coolant is cooled, and the amount of refrigerant released is controlled in conjunction with the radar transmission power to quickly meet the cooling requirements of radar transmission.

[0039] The control method of this embodiment is applicable to the compressor structure described above. The control method includes: when the compressor 1 of the compressor structure is turned off, recording the high pressure value Phigh pressure of the high pressure sensor 41 and the low pressure value Plow pressure of the low pressure sensor 51 of the compressor structure; calculating the high-low pressure difference ΔP = Phigh pressure - Plow pressure; calculating the pressure difference balance rate RΔP = ΔPt2 - ΔPt1 / (t2 - t1); where ΔPt1 is the high-low pressure difference at the previous moment; ΔPt2 is the high-low pressure difference at the next moment; t2 - t1 is the time difference between the next moment and the previous moment; where the pressure difference balance rate RΔP is the rate of change of the pressure difference between 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 rate of change of the pressure difference between the high pressure sensor 41 and the low pressure sensor 51, so that the control valve group adjusts the refrigerant flow in the balance pipeline 6, thereby reducing the speed of pressure balance and avoiding instantaneous liquid slugging at the suction end of the compressor during secondary startup due to rapid balance.

[0040] In the control method of this embodiment, the method of controlling the control valve group includes: installing a switching valve 72 on the balance pipeline 6 to control the on / off state of the balance pipeline 6; when R △P >R速率1 At that time, the switching valve 72 follows F 初始 +△F frequency adjustment on / off; when R △P <R 速率1 At that time, the switching valve 72 follows F 初始 -△F frequency adjustment on / off; when R △P <R 速率2 When the switch valve 72 is closed, the liquid receiver 8 of the compressor structure replenishes refrigerant to the evaporator 3; among which, R 速率1、 R 速率2 This is the preset value; F 初始、 △F is the frequency threshold for opening and closing of the switching valve 72.

[0041] Specifically, the control valve 72 is closed in advance to prevent the high and low pressure difference from being too small, which could cause refrigerant migration and lead to compressor restart failure. The replenishment valve 621 is opened in advance to allow the low-temperature refrigerant in the receiver tank to enter the evaporator in advance to absorb heat and cool down. When the compressor restarts, it can quickly provide low-temperature coolant to cool the radar.

[0042] 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 stops, the regulating valve 73 increases the preset opening based on the initial opening; and simultaneously detecting R. △P The change when R △P >R 速率3 The regulating valve 73 continues to increase the preset opening degree; when R △P <R 速率4 At that time, regulating valve 73 resets and returns to its initial opening.

[0043] Specifically, when the system is equipped with regulating valve 73, regulating valve 73 is an adjustable valve. When the compressor starts, regulating valve 73 adjusts the flow rate according to the suction superheat, opening to a certain degree. When the compressor stops, the adjustable valve 73 opens further by the current opening + D% (preset opening), and simultaneously detects R. △P The change when R △P >R 速率3 The regulating valve 73 continues to open further according to D%. As the opening degree of the regulating valve 73 increases, R... △P It will gradually decrease, when R △P <R 速率4 The regulating valve 73 is reset and returned to its initial opening so that it can quickly cool when the compressor starts again, and the liquid replenishment valve 621 opens simultaneously.

[0044] In the control method of the embodiment, the control method further comprises: setting a liquid storage tank 8 for storing refrigerant, connecting the equalization pipeline 6 with the liquid storage tank 8 to introduce refrigerant to the evaporator 3 of the compressor structure, and setting a siphon valve 641 on the equalization pipeline 6 between the liquid storage tank 8 and the evaporator 3; detecting the high-low pressure difference ΔP, and when ΔP < ΔP 虹吸效应 , the siphon valve 641 is closed; otherwise, the siphon valve 641 is opened to suck refrigerant into the condenser 2.

[0045] Specifically, the high-speed siphon effect of the refrigerant generated during pressure balancing is used to suck low-speed low-temperature refrigerant into the condenser for evaporation and heat absorption, thereby reducing the temperature of the condenser, and the secondary start can quickly achieve the refrigeration effect.

[0046] The control method of the embodiment is described as follows:

[0047] The heat dissipation of radar electronic equipment is closely related to the radar load power, and the radar load is related to the radar transmitting power. The radar has the characteristics that the transmitting power instantaneously reaches the peak value from static or instantaneously becomes static from the peak value according to the operating condition. The liquid cooling source of the radar needs to be controlled according to the radar power, the liquid cooling source is stopped after the radar is static, and the refrigeration system is controlled to meet the rapid restart condition of the liquid cooling source.

[0048] When the compression refrigeration system is normally operated, the low-pressure pressure of the compressor is 0.4-0.6 MPa, and the high-pressure pressure can reach 1.8-2.2 MPa. When the compression refrigeration system is just stopped, the pressure difference between the high and low pressures of the compressor is large. The compressor of the radar compression refrigeration liquid cooling system currently adopts a six-open-three-stop control strategy to ensure the balance of the high and low pressures of the refrigeration system and the oil level of the compressor. Because of this control strategy, when the radar is restarted, the compressor can still be in the three-minute stop time, which causes the liquid cooling system to be unable to immediately cool the radar electronic equipment.

[0049] The control method combines the pressures and temperatures of the refrigeration system to skip the three-minute stop strategy after the compressor is stopped and to meet the rapid restart condition. Figure 1 Figure 2 Figure 1 The adjusting valve 73 can be equivalent to replace the mechanical throttling valve 71 and the on-off valve 72.

[0050] When the system installs mechanical throttle valve 71 and switch valve 72, the compressor stops, the 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 pressure of the compressor exhaust end cannot be balanced, and needs to be balanced by adjusting the switch valve 72. The switch valve 72 is turned on to balance the high and low pressure, but at this time, the high and low pressure balance will produce a great impact on the refrigerant, which will damage the refrigeration system. If you want to solve the impact of the refrigerant and balance the pressure difference, you need to control the refrigerant flow through the solenoid valve, and control the on-off of the solenoid valve at a certain frequency to achieve the effect of balancing the pressure difference and throttling, and not produce the refrigerant impact beyond the system operation range. The control system controls the switch valve 72 to adjust the on-off according to the F initial frequency, 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 is the high and low pressure difference at t1, t2, t1 is the previous moment, t2 is the next moment, the high and low pressure difference of the previous moment is greater than that of the next moment, when R △P >R 速率1 , the switch valve 72 adjusts the on-off according to F 初始 +△F frequency, quickly balances the high and low pressure difference of the compressor, and R △P will gradually decrease with the increase of the frequency of the switch valve 72; when R △P <R 速率1 , the switch valve 72 adjusts the on-off according to F 初始 -△F frequency, reduces the speed of balancing the pressure, avoids the rapid balance leading to the secondary start of the compressor and the instantaneous liquid strike of the suction end. When R△P<R 速率2 , the switch valve 72 is closed, and the liquid supplement valve 621 is opened. The switch valve 72 is closed in advance to avoid the high and low pressure difference being too small, the refrigerant migration, and the failure of the secondary start of the compressor. The liquid supplement valve 621 is opened in advance to allow the low temperature refrigerant in the liquid tank to enter the evaporator in advance to absorb heat and cool down, so that low temperature cooling liquid can be quickly provided for the radar when the compressor starts again.

[0051] When the system installs the regulating valve 73, the regulating valve 73 is an opening adjustable valve, when the compressor is started, the regulating valve 73 adjusts the flow according to the suction superheat, and opens to a certain opening. When the compressor stops, the regulating valve 73 opens according to the current opening+D% (preset opening), and at the same time detects the change of R △P , when R △P >R 速率3 , the regulating valve 73 continues to open according to D%, and with the increase of the opening of the regulating valve 73, R △P will gradually decrease, when R △P <R 速率4The regulating valve 73 is reset and returned to its initial opening so that it can quickly cool when the compressor starts again, and the liquid replenishment valve 621 opens simultaneously.

[0052] After the compressor stops, the control module, while controlling the operation of these two types of installation valves, opens the siphon valve 641 and detects the change in ΔP. When ΔP < ΔP 虹吸效应 Siphon valve 641 is closed. Siphon valve 641 connects the liquid receiver tank and the front end of the condenser. A one-way valve is installed at the rear end of the condenser to prevent refrigerant backflow. When siphon valve 641 is open, the high-speed siphon effect of the refrigerant generated when the pressure is balanced uses the high-speed flowing refrigerant to draw the low-speed, low-temperature refrigerant into the condenser for evaporation and heat absorption, thus lowering the condenser temperature. This allows for rapid cooling during a second start-up.

[0053] In low-temperature environments or when radar transmission power is low, excessive refrigerant in the cooling system leads to a heavy system load. Refrigerant is stored in the liquid storage tank to reduce the system load and maintain the reliability of the cooling system at low temperatures or when radar transmission power is low. When the ambient temperature rises or radar transmission power increases, the refrigerant in the liquid storage tank 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 based on the system's detected condensation temperature (Tcondensing) and evaporation temperature (Tevaporating). H P L Then compared with the actual test P 高压 P 低压 In comparison, if the theoretical calculated value is higher than the actual test value, it means that the system needs to be replenished with refrigerant. Open the liquid replenishment valve 621 and the liquid return valve 631. If the theoretical calculated value is lower than the actual test value, it means that refrigerant needs to be stored. Open the liquid return valve 631 and close the liquid replenishment valve 621.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0056] The above-mentioned sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0057] In the above-mentioned embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0058] The above-mentioned only is the preferred embodiment of the present application, it should be pointed out that, for the ordinary skilled person in the art, without departing from the principle of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A compressor structure, characterized in that, include: Compressor (1); Condenser (2); Evaporator (3); A high-pressure pipeline (4) is provided, one end of which is connected to the 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). 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). 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 pipe (6) is provided, one end of which is connected to the condenser (2) and the other end of which is connected to the evaporator (3). The control module includes a control valve assembly installed on the balance pipeline (6). The control module controls the control valve assembly 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 assembly adjusts the refrigerant flow rate of the balance pipeline (6).

2. The compressor structure according to claim 1, characterized in that, The control valve assembly includes: Mechanical throttle valve (71), which controls the opening and closing of the balance pipeline (6) according to the suction temperature and suction pressure of the compressor (1); A switching valve (72) is connected in parallel with the mechanical throttle valve (71). The switching valve (72) controls the opening and closing of the balance pipeline (6) according to the rate of change of the pressure difference between 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 assembly includes a regulating valve (73), which controls the opening of the balancing pipeline (6) based on the rate of change of the pressure difference between 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 also includes: (8) A liquid storage tank for storing refrigerant. 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 installed 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 balance pipeline (62) is provided with a replenishing valve (621) for controlling the opening and closing of the second balance pipeline (62); the control module is signal connected to the replenishing valve (621), and the control module controls the opening and closing of the replenishing valve (621) according to the condensing temperature and evaporation temperature of the compressor structure.

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

7. The compressor structure according to claim 6, characterized in that, The compressor structure also includes a siphon pipe (64), one end of which is connected to the liquid storage tank (8), and the other end of which is connected to the condenser (2). A siphon valve (641) for controlling the siphon pipe (64) is provided on the siphon pipe (64). The control module is signal-connected to the siphon valve (641). The control module controls the opening and closing of the siphon valve (641) according to the pressure difference between 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 includes: When the compressor (1) of the compressor structure is turned off, record 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; calculate the high and low pressure difference ΔP = Phigh pressure - Plow pressure. The pressure difference balance rate R△P is calculated as follows: R△P = (△Pt2 - △Pt1) / (t2 - t1); where △Pt1 is the high-low pressure difference at the previous moment; △Pt2 is the high-low pressure difference at the next moment; t2 - t1 is the time difference between the next moment and the previous moment; where R△P is the rate of change of the pressure difference between 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 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 balance pipeline (6).

10. The control method according to claim 9, characterized in that, The method of controlling the control valve assembly includes: A switching valve (72) for controlling the opening and closing of the balance pipeline (6) is provided on the balance pipeline (6). When R △P >R 速率1 At that time, the switching valve (72) according to F 初始 +△F frequency adjustment on / off; When R △P <R 速率1 At that time, the switching valve (72) according to F 初始 -△F frequency adjustment on / 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 This is the preset value; F 初始、 △F is the frequency threshold for opening and closing of the switching valve (72).

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

12. The control method according to claim 9, characterized in that, The control method further includes: A liquid storage tank (8) for storing refrigerant is provided, and a balance pipe (6) is connected to the liquid storage tank (8) to supply refrigerant to the evaporator (3) of the compressor structure. A siphon valve (641) is provided on the balance pipe (6) located between the liquid storage tank (8) and the evaporator (3). Detect the high and low pressure difference ΔP, when ΔP < ΔP 虹吸效应 When the siphon valve (641) is closed, the siphon valve (641) is opened to draw refrigerant into the condenser (2).

Images