Air conditioner and control method and device thereof, storage medium and computer program product

Abstract

The invention discloses an air conditioner control method and device, an air conditioner, a storage medium and a computer program product, a shutter device is arranged on the air inlet side of a condenser in a refrigerating system of the air conditioner, and the opening angle of a shutter in the shutter device can be adjusted; the method comprises the steps that before the air conditioner is powered on and started, the initial opening angle of a shutter is determined according to the outdoor environment temperature of the air conditioner; the shutter device is controlled to be opened according to the initial opening angle of the shutter; after the air conditioner is started, the initial opening angle of the shutter is adjusted according to the pressure value of the refrigerating system, and the current opening angle of the shutter is obtained; and the shutter device is controlled to be opened according to the current opening angle of the shutter, so that the refrigerating system operates within the preset condensing pressure range. According to the scheme, by controlling the air inlet angle of the blind window on the outer side of the condenser of the refrigerating system, the condensing pressure of the refrigerating system is improved, continuous refrigerating under the low-temperature condition is achieved, and the heat exchange effect on the vehicle-mounted electronic cabinet is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to an air conditioner control method and device, an air conditioner, a storage medium, and a computer program product, in particular to an air conditioner control method and device for a low-temperature refrigeration louver air inlet device of a vehicle-mounted electronic cabinet air conditioner, an air conditioner, a storage medium, and a computer program product. BACKGROUND

[0002] A cabinet is a self-contained or self-supporting housing for accommodating electrical or electronic equipment. Vehicle-mounted electronic cabinets are applied in mobile communication field stations, vehicle-mounted radar equipment, and other mobile electronic equipment fields, such as a certain type of radar equipment supporting vehicle-mounted radar electronic cabinets, mobile communication vehicle transmitter supporting electronic cabinets, and belong to the field of mobile electronic equipment.

[0003] With the rapid development of the electronic industry, the power density of electronic cabinets is becoming higher and higher, and the demand for heat dissipation is becoming greater and greater. In low-temperature conditions, electronic cabinets also need to be cooled. Based on the vehicle-mounted environment, the electronic cabinet needs to be cooled in the limited vehicle-mounted space to meet the use requirements.

[0004] In related solutions, the vehicle-mounted electronic cabinet air conditioner uses air-to-air heat exchange, that is, air and air exchange heat, and the outside cold air and the inside hot air exchange heat, but need to be separated. However, the vehicle-mounted electronic cabinet air conditioner uses air-to-air heat exchange, and the heat exchange effect of the vehicle-mounted electronic cabinet is not ideal.

[0005] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0006] The present application aims to provide an air conditioner control method and device, an air conditioner, a storage medium, and a computer program product to solve the problem of poor heat exchange effect of the vehicle-mounted electronic cabinet air conditioner in related solutions, and to improve the condensing pressure of the refrigeration system by controlling the louver air inlet angle outside the condenser of the refrigeration system, to continue refrigeration in low-temperature conditions, and to improve the heat exchange effect of the vehicle-mounted electronic cabinet.

[0007] The present invention provides a control method for an air conditioner, wherein the air conditioner can dissipate heat for a vehicle-mounted cabinet; the air conditioner has a refrigeration system, the refrigeration system has a condenser and an evaporator, and a shutter device is provided on the air inlet side of the condenser, and the opening angle of the shutter in the shutter device can be adjusted; the control method for the air conditioner comprises: before the air conditioner is powered on and turned on, obtaining the outdoor ambient temperature of the air conditioner; determining the initial opening angle of the shutter according to the outdoor ambient temperature of the air conditioner; and controlling the shutter device to open according to the initial opening angle of the shutter; after the air conditioner is turned on, obtaining the pressure value of the refrigeration system; adjusting the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter; and controlling the shutter device to open according to the current opening angle of the shutter, so that the refrigeration system operates within a preset condensing pressure range.

[0008] In some embodiments, the initial opening angle of the shutters is determined according to the outdoor ambient temperature of the air conditioner, including: determining the condensation temperature limit of the refrigeration system according to the type of refrigerant in the refrigeration system; when the outdoor ambient temperature of the air conditioner is greater than or equal to a preset temperature limit, determining the initial pressure value of the refrigeration system according to the difference between the condensation temperature limit of the refrigeration system and the outdoor ambient temperature of the air conditioner; determining the initial condensation ambient temperature of the refrigeration system according to the initial pressure value of the refrigeration system; and determining the initial opening angle of the shutters according to the difference between the initial condensation ambient temperature of the refrigeration system and a preset normal working ambient temperature.

[0009] In some embodiments, the refrigeration system further includes an evaporator; the pressure value of the refrigeration system includes: the condensing pressure of the condenser, and the evaporating pressure of the evaporator; adjusting the initial opening angle of the venetian blinds according to the pressure value of the refrigeration system to obtain the current opening angle of the venetian blinds, including: adjusting the initial opening angle of the venetian blinds according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds.

[0010] In some embodiments, the initial opening angle of the venetian blinds is adjusted according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds, including: determining the difference between the condensing pressure of the condenser and the evaporating pressure of the evaporator, recorded as the pressure difference of the refrigeration system; determining the relationship between the pressure difference of the refrigeration system and a preset first pressure threshold and a preset second pressure threshold, the preset first pressure threshold being less than the preset second pressure threshold; if it is determined that the pressure difference of the refrigeration system is less than the preset first pressure threshold, reducing the initial opening angle of the venetian blinds to obtain the current opening angle of the venetian blinds; if it is determined that the pressure difference of the refrigeration system is greater than or equal to the preset first pressure threshold and less than or equal to the preset second pressure threshold, maintaining the initial opening angle of the venetian blinds to obtain the current opening angle of the venetian blinds; if it is determined that the pressure difference of the refrigeration system is greater than the preset second pressure threshold, increasing the initial opening angle of the venetian blinds to obtain the current opening angle of the venetian blinds.

[0011] In some embodiments, the initial opening angle of the venetian blinds is adjusted according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds, and further includes: when the outdoor ambient temperature of the air conditioner is less than a preset temperature limit, controlling the venetian blind device to close; when the condensing pressure of the condenser is greater than a preset pressure limit, adjusting the initial opening angle of the venetian blinds according to the condensing pressure of the condenser to obtain the current opening angle of the venetian blinds.

[0012] In some embodiments, the initial opening angle of the venetian blinds is adjusted according to the condensing pressure of the condenser to obtain the current opening angle of the venetian blinds, including: determining the condensing pressure rising rate of the condenser according to the condensing pressure of the condenser; determining a calculation coefficient according to the condensing pressure rising rate of the condenser and a preset target pressure difference at the initial opening angle of the venetian blinds; and taking the product of the calculation coefficient, the condensing pressure rising rate of the condenser, and the initial opening angle of the venetian blinds, and the ratio of the target pressure difference preset at the initial opening angle of the venetian blinds as the current opening angle of the venetian blinds.

[0013] In some embodiments, the shutter device is controlled to open according to the current opening angle of the shutter so that the refrigeration system operates within a preset condensing pressure range, including: controlling the shutter device to open according to the current opening angle of the shutter; after a set time, determining whether the pressure value of the refrigeration system is within the preset condensing pressure range; if it is determined that the pressure value of the refrigeration system is within the preset condensing pressure range, controlling the air conditioner to maintain the current operation; if it is determined that the pressure value of the refrigeration system is not within the preset condensing pressure range, returning to re-adjust the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter; and cycling in sequence until the pressure value of the refrigeration system is within the preset condensing pressure range.

[0014] Matching the above method, the present invention provides, on the other hand, a control device for an air conditioner, which can dissipate heat from a vehicle-mounted cabinet; the air conditioner has a refrigeration system, which has a condenser and an evaporator, and a shutter device is provided on the air inlet side of the condenser, and the opening angle of the shutter in the shutter device can be adjusted; the control method of the air conditioner includes: an acquisition unit, which is configured to acquire the outdoor ambient temperature of the air conditioner before the air conditioner is powered on and turned on; a control unit, which is configured to determine the initial opening angle of the shutter according to the outdoor ambient temperature of the air conditioner; and control the shutter device to open according to the initial opening angle of the shutter; the acquisition unit is also configured to acquire the pressure value of the refrigeration system after the air conditioner is turned on; the control unit is also configured to adjust the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter; and control the shutter device to open according to the current opening angle of the shutter, so that the refrigeration system operates within a preset condensing pressure range.

[0015] In some embodiments, the control unit determines the initial opening angle of the shutters based on the outdoor ambient temperature of the air conditioner, including: determining the condensation temperature limit of the refrigeration system based on the type of refrigerant in the refrigeration system; when the outdoor ambient temperature of the air conditioner is greater than or equal to a preset temperature limit, determining the initial pressure value of the refrigeration system based on the difference between the condensation temperature limit of the refrigeration system and the outdoor ambient temperature of the air conditioner; determining the initial condensation ambient temperature of the refrigeration system based on the initial pressure value of the refrigeration system; and determining the initial opening angle of the shutters based on the difference between the initial condensation ambient temperature of the refrigeration system and a preset normal working ambient temperature.

[0016] In some embodiments, the refrigeration system further has an evaporator; the pressure value of the refrigeration system includes: the condensing pressure of the condenser and the evaporating pressure of the evaporator; the control unit adjusts the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter, including: adjusting the initial opening angle of the shutter according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the shutter.

[0017] In some embodiments, the control unit adjusts the initial opening angle of the venetian blinds according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds, including: determining the difference between the condensing pressure of the condenser and the evaporating pressure of the evaporator, recorded as the pressure difference of the refrigeration system; determining the relationship between the pressure difference of the refrigeration system and a preset first pressure threshold and a preset second pressure threshold, the preset first pressure threshold being less than the preset second pressure threshold; if it is determined that the pressure difference of the refrigeration system is less than the preset first pressure threshold, reducing the initial opening angle of the venetian blinds to obtain the current opening angle of the venetian blinds; if it is determined that the pressure difference of the refrigeration system is greater than or equal to the preset first pressure threshold and less than or equal to the preset second pressure threshold, maintaining the initial opening angle of the venetian blinds to obtain the current opening angle of the venetian blinds; if it is determined that the pressure difference of the refrigeration system is greater than the preset second pressure threshold, increasing the initial opening angle of the venetian blinds to obtain the current opening angle of the venetian blinds.

[0018] In some embodiments, the control unit adjusts the initial opening angle of the venetian blinds according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds, and also includes: controlling the venetian blind device to close when the outdoor ambient temperature of the air conditioner is lower than a preset temperature limit; and adjusting the initial opening angle of the venetian blinds according to the condensing pressure of the condenser to obtain the current opening angle of the venetian blinds when the condensing pressure of the condenser is higher than a preset pressure limit.

[0019] In some embodiments, the control unit adjusts the initial opening angle of the venetian blinds according to the condensing pressure of the condenser to obtain the current opening angle of the venetian blinds, including: determining the condensing pressure rising rate of the condenser according to the condensing pressure of the condenser; determining a calculation coefficient according to the condensing pressure rising rate of the condenser and a preset target pressure difference at the initial opening angle of the venetian blinds; and taking the product of the calculation coefficient, the condensing pressure rising rate of the condenser, and the initial opening angle of the venetian blinds, and the ratio of the target pressure difference preset at the initial opening angle of the venetian blinds as the current opening angle of the venetian blinds.

[0020] In some embodiments, the control unit controls the shutter device to open according to the current opening angle of the shutter so that the refrigeration system operates within a preset condensing pressure range, including: controlling the shutter device to open according to the current opening angle of the shutter; after a set time, determining whether the pressure value of the refrigeration system is within the preset condensing pressure range; if it is determined that the pressure value of the refrigeration system is within the preset condensing pressure range, controlling the air conditioner to maintain the current operation; if it is determined that the pressure value of the refrigeration system is not within the preset condensing pressure range, returning to re-adjust the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter; and cycling in sequence until the pressure value of the refrigeration system is within the preset condensing pressure range.

[0021] Matching the above device, the present invention further provides an air conditioner, comprising: the control device of the air conditioner described above.

[0022] In accordance with the above method, the present invention further provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the above-mentioned air conditioning control method.

[0023] In accordance with the above method, the present invention further provides a computer program product, comprising a computer program, which implements the steps of the above air conditioner control method when executed by a processor.

[0024] Therefore, the solution of the present invention is to provide an air conditioner for dissipating heat to a vehicle cabinet (i.e., a vehicle cabinet air conditioner), and a shutter device is provided on the outside of the vehicle's external heat exchanger of the air conditioner. The opening angle of the shutters in the shutter device can be adjusted, such as by using a stepper motor to adjust the opening angle of the shutters; before the air conditioner is operated, the initial opening angle of the shutters is controlled according to the outside ambient temperature; after the air conditioner is operated, the initial opening angle of the shutters is adjusted according to the pressure value of the refrigeration system to increase the condensing pressure of the refrigeration system; thereby, by controlling the air inlet angle of the shutters on the outside of the condenser of the refrigeration system, the condensing pressure of the refrigeration system is increased, so that continued refrigeration is achieved under low temperature conditions, thereby improving the heat exchange effect of the vehicle electronic cabinet.

[0025] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0026] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flow chart of an embodiment of a method for controlling an air conditioner according to the present invention;

[0028] Figure 2 1. A schematic diagram of a flow chart of an embodiment of the method for determining the initial opening angle of the blinds in the present invention;

[0029] Figure 3 1 is a flow chart of an embodiment of adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser and the evaporating pressure of the evaporator in the method of the present invention;

[0030] Figure 4 1 is a flow chart of an embodiment of adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser in the method of the present invention;

[0031] Figure 5 1 is a flow chart of an embodiment of obtaining the current opening angle of the shutter according to the condensing pressure of the condenser in the method of the present invention;

[0032] Figure 6 1. A flow chart of an embodiment of the method of the present invention for controlling the shutter device to open according to the current opening angle of the shutter;

[0033] Figure 7 A schematic structural diagram of an embodiment of an air conditioner control device of the present invention;

[0034] Figure 8The present invention is a control logic diagram of a control method for a low-temperature refrigeration shutter air inlet device of an on-board electronic cabinet air conditioner.

[0035] In conjunction with the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0036] 102 - acquisition unit; 104 - control unit. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Considering that the existing air-to-air heat exchange solutions for vehicle electronic cabinets use air-to-air heat exchange, the heat exchange effect is poor. For example, the air-to-air heat exchanger is large and has low heat exchange capacity; and the fresh air directly entering the electronic cabinet for heat exchange cannot maintain the air cleanliness inside the electronic cabinet.

[0039] Furthermore, in-vehicle electronic cabinets require effective heat exchange within the limited vehicle space and low ambient temperatures. Continuing to cool the cabinet while maintaining the same size within the vehicle is the optimal solution.

[0040] For cooling at low ambient temperatures outside, the problem is that the condensing pressure is too low and needs to be increased. The operation in the relevant solution is to adjust the heat exchange area of ​​the condenser through the valve or reduce the fan speed to reduce the heat exchange. However, there are problems with the uneven adjustment ratio of the heat exchange area and the increase in reactive power at low speed of the fan motor, which leads to overheating and cannot be solved.

[0041] Therefore, the solution of the present invention proposes a control method for an air conditioner, specifically a control method for a low-temperature refrigeration condenser shutter air inlet device of an on-board electronic cabinet air conditioner. By detecting the pressure value of the refrigeration system, the condenser shutter air inlet device is controlled to increase the condensing pressure of the refrigeration system, thereby achieving continued refrigeration under low temperature conditions and improving the heat exchange effect of the on-board electronic cabinet.

[0042] According to an embodiment of the present invention, a method for controlling an air conditioner is provided. Figure 1A flowchart of an embodiment of the method of the application is shown. The air conditioner can dissipate heat for a vehicle cabinet, such as a vehicle electronic cabinet. The air conditioner has a refrigeration system, and the refrigeration system has a condenser and an evaporator. A louver device is arranged on the air inlet side of the condenser, and the opening angle of the louver in the louver device can be adjusted. The opening angle of the louver includes the initial opening angle of the louver and the current opening angle of the louver. In the scheme of the application, as shown in Figure 1 The control method of the air conditioner includes steps S110 to S140.

[0043] At step S110, the outdoor environment temperature of the air conditioner is obtained before the air conditioner is powered on. The outdoor environment temperature of the air conditioner, such as the outdoor side environment temperature T 环 .

[0044] At step S120, the initial opening angle of the louver is determined according to the outdoor environment temperature of the air conditioner, and the louver device is controlled to open at the initial opening angle of the louver.

[0045] At step S130, the pressure value of the refrigeration system is obtained after the air conditioner is turned on. Specifically, the condensing pressure of the condenser is obtained, and the evaporating pressure of the evaporator is obtained. The cabinet air conditioner has a pressure sensor for detecting the pressure value of the refrigeration system, and the detected pressure value of the refrigeration system is used for the control and protection of the cabinet air conditioner.

[0046] At step S140, the initial opening angle of the louver is adjusted to obtain the current opening angle of the louver according to the pressure value of the refrigeration system when the louver device has been controlled to open at the initial opening angle of the louver, and the louver device is controlled to open at the current opening angle of the louver, so that the refrigeration system operates within a preset condensing pressure range. Specifically, the initial opening angle of the louver is adjusted to obtain the current opening angle of the louver according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator when the louver device has been controlled to open at the initial opening angle of the louver, and the louver device is controlled to open at the current opening angle of the louver, so that the refrigeration system operates within a preset condensing pressure range.

[0047] Figure 8 A control logic diagram of a control method for a low-temperature refrigeration louver air inlet device of a vehicle electronic cabinet air conditioner is shown. As shown in Figure 8 A control method for a low-temperature refrigeration louver air inlet device of a vehicle electronic cabinet air conditioner includes:

[0048] Step 1: After the cabinet air conditioner is turned on, detect the outer ring temperature and determine the shutter opening conditions. Specifically, detect the outdoor ambient temperature T 环 ; According to the outdoor ambient temperature T 环 , determine the initial opening angle ∠α of the cabinet air conditioner condensing shutter, and then proceed to step 2. The shutter opening condition is controlled according to the outer ring temperature. When the outer ring temperature is low, the shutter opening angle is small. When the outer ring temperature is lower than a limit, the shutter opening angle is 0°, that is, closed state, and the shutter opening angle is 90°, that is, fully open state. When the outer ring temperature is higher than this limit (the temperature T 限 ), the angle increases in direct proportion to the temperature until it is fully open.

[0049] Step 2: Turn on the cabinet air conditioner to start running, and then proceed to step 3.

[0050] Step 3: Detect the refrigeration system pressure value and determine the refrigeration system pressure value: If the system pressure is lower than the critical value, execute step 4, that is, close the shutters to increase the pressure and stabilize the refrigeration system. Then, detect the refrigeration system pressure value again. If the pressure reaches the state, the cabinet air conditioner condensing side is stable, the refrigeration system is stable, and the cabinet air conditioner is stable. If the system pressure is higher than the critical value, execute step 6, that is, maintain the current shutter opening, maintain the pressure, and stabilize the refrigeration system. Then, detect the refrigeration system pressure value again. If the pressure reaches the state, the cabinet air conditioner condensing side is stable, the refrigeration system is stable, and the cabinet air conditioner is stable. If the system pressure is higher than the limit value, execute step 5, that is, open the shutters, reduce the pressure, and stabilize the refrigeration system. Then, detect the refrigeration system pressure value again. If the pressure reaches the state, the cabinet air conditioner condensing side is stable, the refrigeration system is stable, and the cabinet air conditioner is stable. After the cabinet air conditioner is turned on, the refrigeration system pressure value is controlled by the shutters.

[0051] The solution of the present invention proposes a control scheme for a low-temperature refrigeration condenser shutter air inlet device of an on-board electronic cabinet air conditioner. By detecting the pressure value of the refrigeration system, the condenser shutter air inlet device is controlled to increase the condensing pressure of the refrigeration system, thereby achieving continued refrigeration under low-temperature conditions, thereby improving the heat exchange effect of the on-board electronic cabinet, and solving the problem of overcooling of the low-temperature refrigeration condensation of the cabinet air conditioner under limited on-board space conditions, ensuring that the internal working environment of the on-board electronic cabinet is at an appropriate temperature, thereby solving the problem of too low condensing pressure during low-temperature refrigeration of the on-board electronic cabinet, and solving the installation adaptability of the refrigeration device under limited on-board environmental space conditions.

[0052] In some embodiments, the specific process of determining the initial opening angle of the blinds according to the outdoor ambient temperature of the air conditioner in step S120 is described in the following exemplary embodiments.

[0053] The following combination Figure 2The flowchart of an embodiment of determining the initial opening angle of the blinds in the method of the present invention further illustrates the specific process of determining the initial opening angle of the blinds in step S120, including steps S210 to S240.

[0054] Step S210: determining a condensing temperature limit of the refrigeration system according to the type of refrigerant of the refrigeration system.

[0055] Step S220 , when the outdoor ambient temperature of the air conditioner is greater than or equal to a preset temperature limit, determining an initial pressure value of the refrigeration system according to a difference between a condensing temperature limit of the refrigeration system and the outdoor ambient temperature of the air conditioner.

[0056] Step S230: determining the initial condensing ambient temperature of the refrigeration system according to the initial pressure value of the refrigeration system.

[0057] Step S240: determining an initial opening angle of the shutters, such as an initial opening angle ∠α of the cabinet air conditioner condensing shutters, based on a difference between the initial condensing ambient temperature of the refrigeration system and a preset normal working ambient temperature.

[0058] like Figure 8 As shown, a method for controlling a low-temperature cooling shutter air inlet device of an on-vehicle electronic cabinet air conditioner further includes:

[0059] In step 1, according to the outdoor ambient temperature T 环 The initial opening angle ∠α of the cabinet air conditioner's condensing shutters is determined based on the condensing temperature of the cabinet air conditioner. Specifically, the following steps are involved:

[0060] Step 11. Because different types of refrigerants have different condensing temperatures, determine the condensing temperature of the cabinet air conditioner based on the type of refrigerant used. Air conditioners use different types of refrigerants, and different types of refrigerants have corresponding pressure values ​​at different temperatures. Therefore, the condensing pressure value of the air conditioner can be converted to the condensing temperature. For example, the condensing temperature corresponding to the pressure value of R410a refrigerant.

[0061] Step 12: Based on the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 , judge the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 The difference between the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 The difference.

[0062] Step 13: Due to the different types of refrigerants (orally Freon) at different temperatures (such as the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环The difference between the initial condensing temperature and the normal working environment temperature T 环 The difference between the initial condensing temperature and the normal working environment temperature T

[0063] Step 14, since the corresponding pressure value can be converted into the corresponding initial condensing ambient temperature value, according to the condensing pressure value of the cabinet air conditioner, the corresponding initial condensing ambient temperature value can be converted, which is recorded as the initial condensing ambient temperature value of the cabinet air conditioner.

[0064] Step 15, according to the initial condensing ambient temperature value of the cabinet air conditioner and the normal working environment temperature T 常 The difference between the initial condensing temperature and the normal working environment temperature T 常 is obtained.

[0065] Step 16, according to the difference between the initial condensing temperature and the normal working environment temperature T 常 The initial opening angle of the cabinet air conditioner condensing louver is given. ∠α is the initial angle of the louver opening condition.

[0066] Wherein, the greater the difference between the initial condensing temperature and the normal working environment temperature T 常 The smaller the initial opening angle of the cabinet air conditioner condensing louver ∠α. If the initial condensing temperature is lower than the limit value T 限 The louver is in a closed state when the cabinet air conditioner starts.

[0067] The scheme of the application determines the initial opening angle of the louver according to the outdoor environment temperature of the air conditioner, controls the condenser louver air inlet device, improves the condensing pressure of the refrigeration system, and realizes continuous refrigeration under low temperature conditions to improve the heat exchange effect on the vehicle-mounted electronic cabinet, and solves the problem of low temperature refrigeration condensation supercooling of the cabinet air conditioner under the limited vehicle-mounted space conditions, and ensures that the internal working environment of the vehicle-mounted electronic cabinet is at a suitable temperature.

[0068] In some embodiments, the refrigeration system also has an evaporator; the pressure value of the refrigeration system includes: the condensing pressure of the condenser, and the evaporation pressure of the evaporator.

[0069] In step S140, according to the pressure value of the refrigeration system, the initial opening angle of the louver is adjusted to obtain the current opening angle of the louver, including: according to at least one of the condensing pressure of the condenser and the evaporation pressure of the evaporator, the initial opening angle of the louver is adjusted to obtain the current opening angle of the louver.

[0070] The solution of the present invention is to detect the pressure value of the condenser and adjust the opening angle of the shutters in the condenser shutter air inlet device. The condensing pressure is proportional to the condensing temperature. When the outside ambient temperature is low, the condensing pressure will also be low after the air conditioner is turned on. At this time, the refrigeration system is in an abnormal working state and it is necessary to control and increase the condensing pressure. The processing method of the related solution is to reduce the condenser area and increase electric heating.

[0071] In some embodiments, in step S140, the initial opening angle of the venetian blinds is adjusted according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds, including: a process of adjusting the initial opening angle of the venetian blinds according to the condensing pressure of the condenser and the evaporating pressure of the evaporator.

[0072] The following combination Figure 3 The flowchart of an embodiment of adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser and the evaporating pressure of the evaporator in the method of the present invention is shown, further illustrating the specific process of adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser and the evaporating pressure of the evaporator in step S140, including: steps S310 to S350.

[0073] Step S310: Determine the difference between the condensing pressure of the condenser and the evaporating pressure of the evaporator, which is recorded as the pressure difference of the refrigeration system, such as the difference between the condensing pressure and the evaporating pressure P 差 .

[0074] Step S320, determining the relationship between the pressure difference of the refrigeration system and the preset first pressure threshold and the preset second pressure threshold, wherein the preset first pressure threshold is less than the preset second pressure threshold; wherein the preset first pressure threshold is such as the pressure difference limit P 下限 The preset second pressure threshold is such as the pressure difference limit P 上限 .

[0075] Step S330: If it is determined that the pressure difference of the refrigeration system is less than a preset first pressure threshold, the initial opening angle of the shutter is reduced to obtain the current opening angle of the shutter.

[0076] In step S340, if it is determined that the pressure difference of the refrigeration system is greater than or equal to a preset first pressure threshold and less than or equal to a preset second pressure threshold, the initial opening angle of the louver is maintained, and the current opening angle of the louver is obtained. The actual pressure value of the refrigeration system will fluctuate before reaching the target value. The first and second pressure thresholds correspond to the upper and lower limits of the fluctuation. If the pressure difference is within the threshold range, the opening angle of the louver is maintained unchanged.

[0077] Step S350: If it is determined that the pressure difference of the refrigeration system is greater than a preset second pressure threshold, the initial opening angle of the shutter is increased to obtain the current opening angle of the shutter.

[0078] like Figure 8 As shown, a method for controlling a low-temperature cooling shutter air inlet device of an on-vehicle electronic cabinet air conditioner further includes:

[0079] In step 3, specifically, after the cabinet air conditioner is started, the difference P between the condensing pressure and the evaporating pressure is detected. 差 , determine the difference between condensing pressure and evaporating pressure P 差 Is it lower than the pressure difference limit P? 下限 Or, then proceed to step 4 or step 5.

[0080] Step 4: If the difference between the condensing pressure and the evaporating pressure is determined, P 差 Below the pressure difference limit P 下限 At this time, the condensing pressure needs to be increased, and the cabinet air conditioner condensing shutters are closed and adjusted to increase the condensing pressure.

[0081] When the air conditioner is turned on, the high temperature inside the electronic cabinet will cause the condensing side of the air conditioner to release heat. However, since the shutters are opened at a small angle or even closed, the heat cannot be dissipated. At this time, the condensing pressure will increase, and the condensing temperature will also increase. Since the condensing pressure and condensing temperature are achieved by controlling the heat, the condensing pressure and condensing temperature will be out of sync, which is different from the operation of conventional air conditioners. Conventional air conditioners have small changes in ambient temperature, so the condensing pressure and condensing temperature will be synchronized. However, in this solution, the condensing pressure and condensing temperature are increased by controlling the poor heat dissipation of the refrigeration system. It is a non-standard solution, so there will be asynchrony. Therefore, detecting the condensing pressure value will be more direct. Conventional refrigeration systems have throttling devices, and the refrigeration system will eventually reach an equilibrium point. Adjusting the shutters according to the condensing pressure value can make the condensing pressure work in the appropriate range.

[0082] Step 5: If the difference between the condensing pressure and the evaporating pressure is determined, P 差 Higher than the pressure difference limit P 上限 At this time, the condensing pressure needs to be lowered. The cabinet air conditioner's condensing shutters are opened and adjusted to reduce the condensing pressure. The temperature fluctuation inside the cabinet is small, and the evaporation pressure value is stable. By adjusting the condensing shutters, the condensing pressure is controlled within the optimal range, improving the operating performance of the cabinet air conditioner. After the cabinet air conditioner is turned on, it is determined whether the difference between the condensing pressure and the evaporation pressure is within the optimal range. If not, the shutters are adjusted to achieve the optimal range.

[0083] In some embodiments, step S140 adjusts the initial opening angle of the venetian blinds according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the venetian blinds, and also includes: a process of adjusting the initial opening angle of the venetian blinds according to the condensing pressure of the condenser.

[0084] The following combination Figure 4 The flowchart of an embodiment of adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser in the method of the present invention is shown, which further illustrates the specific process of adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser in step S140, including: steps S410 to S420.

[0085] Step S410: When the outdoor ambient temperature of the air conditioner is lower than a preset temperature limit, the shutter device is controlled to close.

[0086] Step S420: When the shutter device is closed, the condensing pressure of the condenser continues to rise until the condensing pressure of the condenser is greater than a preset pressure limit. Then, the initial opening angle of the shutter is adjusted according to the condensing pressure of the condenser to obtain the current opening angle of the shutter. 限 . Preset pressure limit, such as P 启 .

[0087] The application scenario of the solution of the present invention is extremely low temperature refrigeration, and the control method adopted is the shutter angle adjustment, which can achieve the effect of controlling the condensing pressure to adjust the refrigeration effect. Compared with the vehicle-mounted electronic cabinet air conditioner in the related solution, the solution of the present invention controls the shutter opening angle in the condenser shutter air inlet device, turns on the refrigeration when the outdoor ambient temperature is low, increases the condensing pressure to meet the normal operation of the refrigeration system, and can increase the condensing pressure at low temperatures; under the normal refrigeration operation state, controlling the condensing pressure can keep the cabinet air conditioner working pressure value within the optimal range, and can control the condensing temperature at room temperature and adjust the optimal cooling capacity. It has a dust-proof function, and the shutters can be closed when the vehicle-mounted electronic cabinet is not in use, avoiding dust intrusion during transportation and reducing the maintenance cycle.

[0088] In some embodiments, in step S420, the initial opening angle of the shutter is adjusted according to the condensing pressure of the condenser to obtain the specific process of the current opening angle of the shutter. Please refer to the following exemplary description.

[0089] The following combination Figure 5The flowchart of an embodiment of the method of the present invention for obtaining the current opening angle of the shutter according to the condensing pressure of the condenser is shown, which further illustrates the specific process of obtaining the current opening angle of the shutter according to the condensing pressure of the condenser in step S420, including: steps S510 to S530.

[0090] Step S510: determining a condensing pressure rising rate of the condenser according to the condensing pressure of the condenser.

[0091] Step S520, determining a calculation coefficient according to the condensing pressure rising rate of the condenser and a preset target pressure difference at the initial opening angle of the shutter; wherein the calculation coefficient is such as K.

[0092] In step S530, the product of the calculation coefficient, the condensing pressure rising rate of the condenser, and the initial opening angle of the shutter is used as the ratio of the preset target pressure difference at the initial opening angle of the shutter as the current opening angle of the shutter.

[0093] like Figure 8 As shown, a method for controlling a low-temperature cooling shutter air inlet device of an on-vehicle electronic cabinet air conditioner further includes:

[0094] Step 6: The outdoor ambient temperature is lower than the limit T 限 Under low temperature conditions, after the cabinet air conditioner is started, the shutters are in closed mode, and the condensing pressure of the refrigeration system is in a continuous rising state until the condensing pressure is higher than P 启 , according to the condensation pressure rising rate V HP The target pressure difference P at the initial opening angle ∠α of the cabinet air conditioner condensing shutter 标 , establish the proportional relationship K value, which is used to control the shutter adjustment angle ∠β=KV HP ∠α / P 标 , keep the condensing pressure rising smoothly and solve the system instability problem caused by the sharp rise of condensing pressure.

[0095] Among them, P 启 The condensing pressure value reaches the condition for the shutter to open, P 上限 and P 下限 They are the upper and lower limits of the optimal pressure range for the cabinet air conditioner operation, P 启 It is the minimum condensing pressure for the refrigeration system to meet normal operation. 标 It is an optimal standard pressure of the refrigeration system at different condensing temperatures. 标The corresponding difference in rate of increase or decrease is calculated by using the PID algorithm to generate the K value, which is then substituted back into the K value to calculate ∠β. ∠β is calculated after the cabinet air conditioner is running. If no adjustment is required, ∠β is 0. ∠α is the value calculated based on the environmental parameters after the cabinet air conditioner is running.

[0096] The initial condensing temperature is very low. After the air conditioner is turned on, the condensing pressure will be at a very low value. At this time, the heat dissipation is controlled and the condensing pressure will gradually increase. The comparison between the condensing pressure increase value and time will form the condensing pressure increase rate. The closer to the condensing pressure target value, the closer the increase rate is to 0. This proportional relationship takes the K value as the corresponding relationship conversion value and is brought into the control algorithm for control.

[0097] The solution of the present invention detects the pressure value of the condenser and adjusts the opening angle of the shutters in the condenser shutter air inlet device. The condensing pressure is proportional to the condensing temperature. When the outside ambient temperature is low, the condensing pressure will also be low after the air conditioner is turned on. At this time, the refrigeration system is in an abnormal working state and it is necessary to control and increase the condensing pressure. When the outdoor ambient temperature is low, the refrigeration is turned on to increase the condensing pressure to meet the normal operation of the refrigeration system. The condensing pressure can be increased at low temperatures, so that the working pressure value of the cabinet air conditioner can be within the optimal range.

[0098] In some embodiments, the specific process of controlling the shutter device to open according to the current opening angle of the shutter in step S140 so that the refrigeration system operates within a preset condensing pressure range is described in the following exemplary embodiments.

[0099] The following combination Figure 6 The flowchart of an embodiment of controlling the shutter device to open according to the current opening angle of the shutter in the method of the present invention is shown, which further illustrates the specific process of controlling the shutter device to open according to the current opening angle of the shutter in step S140, including: steps S610 to S650.

[0100] Step S610: Control the shutter device to open according to the current opening angle of the shutter.

[0101] Step S620: After the set time, determine whether the pressure value of the refrigeration system is within a preset condensing pressure range.

[0102] Step S630: If it is determined that the pressure value of the refrigeration system is within the preset condensing pressure range, the air conditioner is controlled to maintain the current operation.

[0103] In step S640, if it is determined that the pressure value of the refrigeration system is not within the preset condensing pressure range, the process returns to adjust the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter.

[0104] Step S650, looping in sequence until the pressure value of the refrigeration system is within a preset condensing pressure range.

[0105] The solution of the present invention controls the shutter device to open according to the current opening angle of the shutter, so that the refrigeration system operates within a preset condensing pressure range, turns on the refrigeration when the outdoor ambient temperature is low, and increases the condensing pressure to meet the normal operation of the refrigeration system. It can increase the condensing pressure at low temperatures, so that the working pressure value of the cabinet air conditioner is within the optimal range.

[0106] When the cabinet air conditioner is in a vehicle environment, not in operation, or during transport, the shutters can be closed to prevent the impact of rain, dust, and other weather conditions on the cabinet air conditioner, thereby improving reliability. The shutters are driven by a stepper motor to achieve angle control. Conventionally, they can be closed for protection during dust storms, but the air conditioner cannot be turned on or operate under dusty conditions. The shutters use dual protection control to ensure that the cabinet air conditioner can continue to operate under dusty conditions. This dual protection prevents the entry of large dust particles, while fine dust particles are prevented from entering. There are sand leakage holes at the bottom of the cabinet air conditioner. After the dust stops, the accumulated fine dust can be discharged through the sand leakage holes to the outside of the cabinet air conditioner.

[0107] Among them, the double protection control is a double shutter structure. Since sand and dust have a certain weight, through the double shutter structure, only small and light sand and dust can pass through the condenser and accumulate at the bottom of the cabinet air conditioner, and then flow out through the sand leakage holes at the bottom. It mainly solves the problem that in conventional sandstorms, the shutters are usually closed to prevent sand and dust, but the cabinet air conditioner cannot continue to operate after the shutters are closed. The double shutters form an inclined T 型 The funnel air inlet brings sand and dust from bottom to top, and large particles of sand and dust are affected by gravity and oblique T 型 The louvers block the air from entering the cabinet air conditioner, while the heat exchanged air and fine dust will enter the cabinet air conditioner for heat exchange.

[0108] The application environment of the solution of the present invention is exemplified as follows: When the outside ambient temperature is -40°C in winter, a certain radar is in the on-state. After the radar is turned on, the temperature of the internal electronic cabinet is very high. Since the radar electronic equipment environment cannot directly exchange heat with the conventional environment, electromagnetic leakage will occur, and the electromagnetic radiation in some areas will exceed the standard, making it impossible to meet the radar's electromagnetic compatibility technical indicators. Therefore, the radar electronic cabinet needs to be isolated from the external environment. At this time, electronic cabinet air conditioning equipment is needed to cool the electronic cabinet. When the radar is in a vehicle environment, there are space limitations on the vehicle. The power of the radar electronic cabinet needs to be greater to ensure the radar's transmission power. Therefore, the power density of the radar electronic cabinet will be greater, so the radar electronic cabinet needs to dissipate heat all year round. Therefore, it belongs to a special type of application scenario, which is different from the application scenario in the related solution.

[0109] By adopting the technical solution of this embodiment, a shutter device is set on the outside of the vehicle's external heat exchanger of an air conditioner (i.e., a vehicle-mounted cabinet air conditioner) for dissipating heat to a vehicle-mounted cabinet. The opening angle of the shutters in the shutter device can be adjusted, such as by using a stepper motor to adjust the opening angle of the shutters; before the air conditioner is running, the initial opening angle of the shutters is controlled according to the outside ambient temperature; after the air conditioner is running, the initial opening angle of the shutters is adjusted according to the pressure value of the refrigeration system to increase the condensing pressure of the refrigeration system; thereby, by controlling the air inlet angle of the shutters on the outside of the condenser of the refrigeration system, the condensing pressure of the refrigeration system is increased, and continued cooling is achieved under low temperature conditions, thereby improving the heat exchange effect of the vehicle-mounted electronic cabinet.

[0110] According to an embodiment of the present invention, a control device for an air conditioner corresponding to the control method for an air conditioner is also provided. Figure 7 The structure diagram of an embodiment of the device of the present invention is shown. The air conditioner can dissipate heat from a vehicle-mounted cabinet, such as a vehicle-mounted electronic cabinet; the air conditioner has a refrigeration system, the refrigeration system has a condenser and an evaporator, and a shutter device is provided on the air inlet side of the condenser, and the opening angle of the shutter in the shutter device can be adjusted; in the solution of the present invention, Figure 7 As shown, the air conditioner control method includes: an acquisition unit 102 and a control unit 104.

[0111] The acquisition unit 102 is configured to acquire the outdoor ambient temperature of the air conditioner before the air conditioner is powered on and turned on; the outdoor ambient temperature of the air conditioner, such as the outdoor ambient temperature T 环 The specific functions and processing of the acquisition unit 102 are shown in step S110.

[0112] The control unit 104 is configured to determine the initial opening angle of the blinds according to the outdoor ambient temperature of the air conditioner and control the blinds to open at the initial opening angle. The specific functions and processing of the control unit 104 are described in step S120.

[0113] The acquisition unit 102 is further configured to acquire the pressure value of the refrigeration system after the air conditioner is turned on; specifically, to acquire the condensing pressure of the condenser and the evaporating pressure of the evaporator. The specific functions and processing of the acquisition unit 102 are also described in step S130.

[0114] The control unit 104 is further configured to, after the shutter device has been controlled to open at the initial shutter opening angle, adjust the initial shutter opening angle based on the pressure value of the refrigeration system to obtain the current shutter opening angle; and control the shutter device to open at the current shutter opening angle so that the refrigeration system operates within a preset condensing pressure range. Specifically, after the shutter device has been controlled to open at the initial shutter opening angle, adjust the initial shutter opening angle based on at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current shutter opening angle; and control the shutter device to open at the current shutter opening angle so that the refrigeration system operates within the preset condensing pressure range. The specific functions and processing of the control unit 104 are also described in step S140.

[0115] Figure 8 This is a control logic diagram of a control method for a low-temperature cooling shutter air inlet device of a vehicle-mounted electronic cabinet air conditioner. Figure 8 As shown, a method for controlling a low-temperature cooling shutter air inlet device of an on-board electronic cabinet air conditioner includes:

[0116] Step 1: After the cabinet air conditioner is turned on, detect the outer ring temperature and determine the shutter opening conditions. Specifically, detect the outdoor ambient temperature T 环 ; According to the outdoor ambient temperature T 环 , determine the initial opening angle ∠α of the cabinet air conditioner condensing shutter, and then proceed to step 2.

[0117] Step 2: Turn on the cabinet air conditioner to start running, and then proceed to step 3.

[0118] Step 3, detect the refrigeration system pressure value and judge the refrigeration system pressure value: if the system pressure is lower than the critical value, execute step 4, that is, close the shutters to increase the pressure, and the refrigeration system runs stably. Then detect the refrigeration system pressure value again. If the pressure reaches the state, the condensing side of the cabinet air conditioner is stable, the refrigeration system is stable, and the cabinet air conditioner runs stably; if the system pressure is higher than the critical value, execute step 6, that is, maintain the current opening of the shutters, maintain the pressure, and the refrigeration system runs stably. Then detect the refrigeration system pressure value again. If the pressure reaches the state, the condensing side of the cabinet air conditioner is stable, the refrigeration system is stable, and the cabinet air conditioner runs stably; if the system pressure is higher than the limit value, execute step 5, that is, open the shutters, reduce the pressure, and the refrigeration system runs stably. Then detect the refrigeration system pressure value again. If the pressure reaches the state, the condensing side of the cabinet air conditioner is stable, the refrigeration system is stable, and the cabinet air conditioner runs stably.

[0119] The solution of the present invention proposes a control scheme for a low-temperature refrigeration condenser shutter air inlet device of an on-board electronic cabinet air conditioner. By detecting the pressure value of the refrigeration system, the condenser shutter air inlet device is controlled to increase the condensing pressure of the refrigeration system, thereby achieving continued refrigeration under low-temperature conditions, thereby improving the heat exchange effect of the on-board electronic cabinet, and solving the problem of overcooling of the low-temperature refrigeration condensation of the cabinet air conditioner under limited on-board space conditions, ensuring that the internal working environment of the on-board electronic cabinet is at an appropriate temperature, thereby solving the problem of too low condensing pressure during low-temperature refrigeration of the on-board electronic cabinet, and solving the installation adaptability of the refrigeration device under limited on-board environmental space conditions.

[0120] In some embodiments, the control unit 104 determines the initial opening angle of the blinds according to the outdoor ambient temperature of the air conditioner, including:

[0121] The control unit 104 is further configured to determine a condensing temperature limit of the refrigeration system according to the type of refrigerant in the refrigeration system. Specific functions and processing of the control unit 104 are also described in step S210.

[0122] The control unit 104 is further configured to determine an initial pressure value of the refrigeration system based on a difference between the condensing temperature limit of the refrigeration system and the outdoor ambient temperature of the air conditioner when the outdoor ambient temperature of the air conditioner is greater than or equal to a preset temperature limit. The specific functions and processing of the control unit 104 are further described in step S220.

[0123] The control unit 104 is further configured to determine the initial condensing ambient temperature of the refrigeration system according to the initial pressure value of the refrigeration system. The specific functions and processing of the control unit 104 are also shown in step S230.

[0124] The control unit 104 is further configured to determine an initial opening angle of the louvers, such as an initial opening angle ∠α of the cabinet air conditioner condensing louvers, based on a difference between the initial condensing ambient temperature of the refrigeration system and a preset normal operating ambient temperature. The specific functions and processing of the control unit 104 are further described in step S240.

[0125] like Figure 8 As shown, a method for controlling a low-temperature cooling shutter air inlet device of an on-vehicle electronic cabinet air conditioner further includes:

[0126] In step 1, according to the outdoor ambient temperature T 环 The initial opening angle ∠α of the cabinet air conditioner's condensing shutters is determined based on the condensing temperature of the cabinet air conditioner. Specifically, the following steps are involved:

[0127] Step 11: Since different types of refrigerants have different condensing temperatures, the condensing temperature of the cabinet air conditioner is determined based on the type of refrigerant used by the cabinet air conditioner.

[0128] Step 12: Based on the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 , judge the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 The difference between the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 The difference.

[0129] Step 13: Due to the different types of refrigerants (orally Freon) at different temperatures (such as the condensing temperature of the cabinet air conditioner and the outdoor ambient temperature T 环 Therefore, according to the type of refrigerant used in the cabinet air conditioner, determine the condensation temperature of the refrigerant used in the cabinet air conditioner and the outdoor ambient temperature T 环 The pressure value corresponding to the difference is recorded as the condensing pressure value of the cabinet air conditioner.

[0130] Step 14: Since the corresponding initial condensing ambient temperature value can be converted from the corresponding pressure value, the corresponding initial condensing ambient temperature value can be converted from the condensing pressure value of the cabinet air conditioner and recorded as the initial condensing ambient temperature value of the cabinet air conditioner.

[0131] Step 15: Based on the initial condensing ambient temperature of the cabinet air conditioner and the normal working ambient temperature T 常 Compare the initial condensation temperature and the normal working environment temperature T 常 The difference.

[0132] Step 16: Based on the initial condensing temperature of the cabinet air conditioner and the normal working environment temperature T 常 The difference between gives the initial opening angle ∠α of the cabinet air conditioner condensing shutter.

[0133] Among them, the initial condensation temperature and the normal working environment temperature T 常 The larger the difference is, the smaller the initial opening angle ∠α of the cabinet air conditioner condensing shutter is. If the initial condensing temperature is detected to be lower than the limit T 限 , the shutters are closed when the cabinet air conditioner is started.

[0134] The solution of the present invention determines the initial opening angle of the shutter according to the outdoor ambient temperature of the air conditioner, controls the condenser shutter air inlet device, increases the condensing pressure of the refrigeration system, and enables continued refrigeration under low temperature conditions, thereby improving the heat exchange effect of the vehicle-mounted electronic cabinet, and solves the problem of overcooling of the cabinet air conditioner during low-temperature refrigeration condensation under limited vehicle space conditions, thereby ensuring that the internal working environment of the vehicle-mounted electronic cabinet is at an appropriate temperature.

[0135] In some embodiments, the refrigeration system further has an evaporator; the pressure value of the refrigeration system comprises a condensing pressure of the condenser and an evaporating pressure of the evaporator.

[0136] The control unit 104 adjusts the initial opening angle of the louvers according to the pressure value of the refrigeration system to obtain the current opening angle of the louvers, comprising: the control unit 104 is specifically further configured to adjust the initial opening angle of the louvers according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the louvers.

[0137] The scheme of the present application is to adjust the opening angle of the louvers in the condenser louver air inlet device by detecting the pressure value of the condenser. The condensing pressure is proportional to the condensing temperature. When the outside environment temperature is low, the condensing pressure will also be low after the air conditioner is turned on. At this time, the refrigeration system is in an abnormal working state, and the condensing pressure needs to be controlled to be increased. The processing mode of the related scheme is to reduce the condenser area and increase the electric heating.

[0138] In some embodiments, the control unit 104 adjusts the initial opening angle of the louvers according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the louvers, comprising: the process of adjusting the initial opening angle of the louvers according to the condensing pressure of the condenser and the evaporating pressure of the evaporator is specifically as follows:

[0139] The control unit 104 is specifically further configured to determine the difference value between the condensing pressure of the condenser and the evaporating pressure of the evaporator, denoted as the pressure difference value of the refrigeration system, such as the difference value P 差 between the condensing pressure and the evaporating pressure. The specific functions and processes of the control unit 104 also refer to step S310.

[0140] The control unit 104 is specifically further configured to determine the size relationship between the pressure difference value of the refrigeration system and the preset first pressure threshold and the preset second pressure threshold, wherein the preset first pressure threshold is smaller than the preset second pressure threshold; wherein the preset first pressure threshold is a pressure difference limit value P 下限 , and the preset second pressure threshold is a pressure difference limit value P 上限 . The specific functions and processes of the control unit 104 also refer to step S320.

[0141] The control unit 104 is specifically further configured to adjust the initial opening angle of the louvers to obtain the current opening angle of the louvers if it is determined that the pressure difference value of the refrigeration system is smaller than the preset first pressure threshold. The specific functions and processes of the control unit 104 also refer to step S330.

[0142] The control unit 104 is specifically further configured to maintain the initial opening angle of the louver to obtain the current opening angle of the louver if it is determined that the pressure difference value of the refrigeration system is greater than or equal to the preset first pressure threshold value and less than or equal to the preset second pressure threshold value. The specific functions and processes of the control unit 104 are also referred to step S340.

[0143] The control unit 104 is specifically further configured to increase the initial opening angle of the louver to obtain the current opening angle of the louver if it is determined that the pressure difference value of the refrigeration system is greater than the preset second pressure threshold value. The specific functions and processes of the control unit 104 are also referred to step S350.

[0144] As shown in Figure 8 A control method of a low-temperature refrigeration louver air inlet device of an on-board electronic cabinet air conditioner, further comprising:

[0145] In step 3, specifically, after the cabinet air conditioner is started, the difference P 差 between the condensing pressure and the evaporating pressure is detected, and it is judged whether the difference P 差 between the condensing pressure and the evaporating pressure is lower than the pressure difference limit P 下限 , or step 4 or step 5 is performed thereafter.

[0146] Step 4, if it is judged that the difference P 差 between the condensing pressure and the evaporating pressure is lower than the pressure difference limit P 下限 , the condensing pressure needs to be increased at this time, and the cabinet air conditioner condensing louver is adjusted to be closed to increase the condensing pressure.

[0147] Wherein, the air conditioner is turned on, and the inside of the electronic cabinet is normal high temperature. The air conditioner condensing side releases heat. Since the opening angle of the louver is small or even closed, the heat cannot be dissipated. At this time, the condensing pressure will rise, and the condensing temperature will also rise. Since the condensing pressure and the condensing temperature are controlled by heat, the condensing pressure and the condensing temperature will be out of sync, which is different from the conventional air conditioner operation. Since the environmental temperature change of the conventional air conditioner is small, the condensing pressure and the condensing temperature will be synchronized. However, the condensing pressure and the condensing temperature of this scheme are increased by controlling the poor heat dissipation of the refrigeration system, which is a non-conventional mode, so they are out of sync. Therefore, detecting the condensing pressure value is more direct. The conventional refrigeration system throttling device exists, and the refrigeration system will eventually reach a balance point. Adjusting the louver according to the condensing pressure value can make the condensing pressure work in the appropriate interval.

[0148] Step 5, if it is judged that the difference P 差 between the condensing pressure and the evaporating pressure is higher than the pressure difference limit P 上限At this time, the condensing pressure needs to be lowered, and the cabinet air conditioner condensing shutters are opened and adjusted to reduce the condensing pressure. The temperature fluctuation inside the cabinet is small, and the evaporation pressure value is stable. By adjusting the condensing shutters, the condensing pressure is controlled within the optimal range, thereby improving the operation effect of the cabinet air conditioner.

[0149] In some embodiments, the control unit 104 adjusts the initial opening angle of the louver according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the louver, further comprising: a process of adjusting the initial opening angle of the louver according to the condensing pressure of the condenser, specifically as follows:

[0150] The control unit 104 is further configured to control the shutter device to close when the outdoor ambient temperature of the air conditioner is lower than a preset temperature limit. The specific functions and processing of the control unit 104 are also shown in step S410.

[0151] The control unit 104 is further configured to, when the shutter device is closed, allow the condensing pressure of the condenser to continue to rise until the condensing pressure of the condenser is greater than a preset pressure limit, and then adjust the initial opening angle of the shutter according to the condensing pressure of the condenser to obtain the current opening angle of the shutter. 限 . Preset pressure limit, such as P 启 The specific functions and processing of the control unit 104 are also described in step S420.

[0152] The application scenario of the solution of the present invention is extremely low temperature refrigeration, and the control method adopted is the shutter angle adjustment, which can achieve the effect of controlling the condensing pressure to adjust the refrigeration effect. Compared with the vehicle-mounted electronic cabinet air conditioner in the related solution, the solution of the present invention controls the shutter opening angle in the condenser shutter air inlet device, turns on the refrigeration when the outdoor ambient temperature is low, increases the condensing pressure to meet the normal operation of the refrigeration system, and can increase the condensing pressure at low temperatures; under the normal refrigeration operation state, controlling the condensing pressure can keep the cabinet air conditioner working pressure value within the optimal range, and can control the condensing temperature at room temperature and adjust the optimal cooling capacity. It has a dust-proof function, and the shutters can be closed when the vehicle-mounted electronic cabinet is not in use, avoiding dust intrusion during transportation and reducing the maintenance cycle.

[0153] In some embodiments, the control unit 104 adjusts the initial opening angle of the shutter according to the condensing pressure of the condenser to obtain the current opening angle of the shutter, including:

[0154] The control unit 104 is further configured to determine a condensing pressure rising rate of the condenser according to the condensing pressure of the condenser. The specific functions and processing of the control unit 104 are also shown in step S510.

[0155] The control unit 104 is further configured to determine a calculation coefficient based on the condensing pressure rise rate of the condenser and a preset target pressure difference at the initial opening angle of the shutter, wherein the calculation coefficient is K. The specific functions and processing of the control unit 104 are further described in step S520.

[0156] The control unit 104 is further configured to use the product of the calculation coefficient, the condensing pressure rise rate of the condenser, and the initial opening angle of the louver as the current opening angle of the louver. The specific functions and processing of the control unit 104 are further described in step S530.

[0157] like Figure 8 As shown, a method for controlling a low-temperature cooling shutter air inlet device of an on-vehicle electronic cabinet air conditioner further includes:

[0158] Step 6: The outdoor ambient temperature is lower than the limit T 限 Under low temperature conditions, after the cabinet air conditioner is started, the shutters are in closed mode, and the condensing pressure of the refrigeration system is in a continuous rising state until the condensing pressure is higher than P 启 , according to the condensation pressure rising rate V HP The target pressure difference P at the initial opening angle ∠α of the cabinet air conditioner condensing shutter 标 , establish the proportional relationship K value, which is used to control the shutter adjustment angle ∠β=KV HP ∠α / P 标 , keep the condensing pressure rising smoothly and solve the system instability problem caused by the sharp rise of condensing pressure.

[0159] The initial condensing temperature is very low. After the air conditioner is turned on, the condensing pressure will be at a very low value. At this time, the heat dissipation is controlled and the condensing pressure will gradually increase. The comparison between the condensing pressure increase value and time will form the condensing pressure increase rate. The closer to the condensing pressure target value, the closer the increase rate is to 0. This proportional relationship takes the K value as the corresponding relationship conversion value and is brought into the control algorithm for control.

[0160] The solution of the present invention detects the pressure value of the condenser and adjusts the opening angle of the shutters in the condenser shutter air inlet device. The condensing pressure is proportional to the condensing temperature. When the outside ambient temperature is low, the condensing pressure will also be low after the air conditioner is turned on. At this time, the refrigeration system is in an abnormal working state and it is necessary to control and increase the condensing pressure. When the outdoor ambient temperature is low, the refrigeration is turned on to increase the condensing pressure to meet the normal operation of the refrigeration system. The condensing pressure can be increased at low temperatures, so that the working pressure value of the cabinet air conditioner can be within the optimal range.

[0161] In some embodiments, the control unit 104 controls the shutter device to open according to the current opening angle of the shutter so that the refrigeration system operates within a preset condensing pressure range, including:

[0162] The control unit 104 is further configured to control the shutter device to open according to the current opening angle of the shutter. The specific functions and processing of the control unit 104 are also shown in step S610.

[0163] The control unit 104 is further configured to determine whether the pressure value of the refrigeration system is within a preset condensing pressure range after a set time. The specific functions and processing of the control unit 104 are also shown in step S620.

[0164] The control unit 104 is further configured to control the air conditioner to maintain current operation if it is determined that the pressure value of the refrigeration system is within a preset condensing pressure range. The specific functions and processing of the control unit 104 are also shown in step S630.

[0165] The control unit 104 is further configured to, if it determines that the pressure value of the refrigeration system is not within the preset condensing pressure range, return to adjust the initial opening angle of the louver based on the pressure value of the refrigeration system to obtain the current opening angle of the louver. The specific functions and processing of the control unit 104 are further described in step S640.

[0166] The control unit 104 is further configured to cycle sequentially until the pressure value of the refrigeration system is within a preset condensing pressure range. The specific functions and processing of the control unit 104 are also shown in step S650.

[0167] The solution of the present invention controls the shutter device to open according to the current opening angle of the shutter, so that the refrigeration system operates within a preset condensing pressure range, turns on the refrigeration when the outdoor ambient temperature is low, and increases the condensing pressure to meet the normal operation of the refrigeration system. It can increase the condensing pressure at low temperatures, so that the working pressure value of the cabinet air conditioner is within the optimal range.

[0168] The cabinet air conditioner is in a vehicle-mounted environment, and the cabinet air conditioner is in a transfer process when the cabinet air conditioner does not operate, the louver can be closed to prevent the influence of various weather conditions such as rain and dust on the cabinet air conditioner, and the reliability is improved. The louver is driven by a stepping motor to realize control of the angle. Conventionally, the louver can be closed for protection when dust comes, but the air conditioner cannot be started at this time, and the cabinet air conditioner cannot operate under the dust condition. The double protection control of the louver can realize that the cabinet air conditioner can continue to operate under the dust condition. The double protection control allows large dust particles to enter, and fine dust can leak to the outside of the cabinet air conditioner through the dust leakage hole at the bottom of the cabinet air conditioner after the dust stops.

[0169] The application environment of the scheme of the present application is as follows: when the outside environment temperature is minus 40 DEG C in winter, the radar is in a starting state at this time, the internal electronic cabinet environment temperature is very high after the radar is started, electromagnetic leakage is caused due to the fact that the radar electronic equipment environment cannot directly exchange heat with the conventional environment, the electromagnetic radiation of some areas exceeds the standard, the electromagnetic compatibility technical index of the radar cannot be reached, and therefore the radar electronic cabinet needs to be isolated from the outside environment. At this time, the electronic cabinet air conditioner equipment needs to be used to cool the electronic cabinet, the radar is in a vehicle-mounted environment, the vehicle-mounted space is limited, the power of the radar electronic cabinet needs to be larger to ensure the transmitting power of the radar, and therefore the power density of the radar electronic cabinet is larger, and therefore the radar electronic cabinet needs to be cooled all the year round. Therefore, it belongs to a special application scenario, which is different from the application scenario in the related scheme.

[0170] Since the processing and functions realized by the device of the present embodiment basically correspond to the embodiments, principles and examples of the foregoing method, details not described in the description of the present embodiment can be referred to the related description in the foregoing embodiments, which will not be repeated here.

[0171] According to the embodiments of the present application, an air conditioner corresponding to the control device of the air conditioner is also provided. The air conditioner can include the control device of the air conditioner described above.

[0172] Since the processing and functions realized by the air conditioner of the present embodiment basically correspond to the embodiments, principles and examples of the foregoing device, details not described in the description of the present embodiment can be referred to the related description in the foregoing embodiments, which will not be repeated here.

[0173] According to the embodiments of the present application, a computer program product corresponding to the control method of the air conditioner is also provided, which includes a computer program. When the computer program is executed by a processor, the steps of the control method of the air conditioner described above are realized.

[0174] Since the processing and functions realized by the product of the present embodiment basically correspond to the embodiments, principles and examples of the foregoing method, details not described in the description of the present embodiment can be referred to the related description in the foregoing embodiments, which will not be repeated here.

[0175] According to an embodiment of the present invention, a storage medium corresponding to the air conditioner control method is also provided, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the air conditioner control method described above.

[0176] Since the processing and functions implemented by the storage medium of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0177] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0178] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner can dissipate heat from the vehicle-mounted cabinet; the air conditioner has a refrigeration system, the refrigeration system has a condenser and an evaporator, and a shutter device is provided on the air inlet side of the condenser, and the opening angle of the shutter in the shutter device can be adjusted; The air conditioner control method includes: Obtaining the outdoor ambient temperature of the air conditioner before the air conditioner is powered on and turned on; determining an initial opening angle of the shutter according to the outdoor ambient temperature of the air conditioner; and controlling the shutter device to open according to the initial opening angle of the shutter; After the air conditioner is turned on, obtaining a pressure value of the refrigeration system; According to the pressure value of the refrigeration system, the initial opening angle of the shutter is adjusted to obtain the current opening angle of the shutter; and the shutter device is controlled to open according to the current opening angle of the shutter, so that the refrigeration system operates within a preset condensing pressure range.

2. The air conditioner control method according to claim 1, characterized in that: Determining an initial opening angle of the shutter according to an outdoor ambient temperature of the air conditioner includes: Determining a condensing temperature limit of the refrigeration system according to the type of refrigerant in the refrigeration system; determining an initial pressure value of the refrigeration system according to a difference between a condensing temperature limit of the refrigeration system and the outdoor ambient temperature of the air conditioner when the outdoor ambient temperature of the air conditioner is greater than or equal to a preset temperature limit; determining an initial condensing ambient temperature of the refrigeration system according to an initial pressure value of the refrigeration system; The initial opening angle of the shutter is determined according to the difference between the initial condensing ambient temperature of the refrigeration system and the preset normal working ambient temperature.

3. The air conditioner control method according to claim 1, characterized in that: The refrigeration system further comprises an evaporator; the pressure value of the refrigeration system comprises: the condensing pressure of the condenser and the evaporating pressure of the evaporator; Adjusting the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter includes: The initial opening angle of the louver is adjusted according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the louver.

4. The air conditioner control method according to claim 3, characterized in that: Adjusting the initial opening angle of the shutter according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the shutter includes: Determine the difference between the condensing pressure of the condenser and the evaporating pressure of the evaporator, and record it as the pressure difference of the refrigeration system; Determining a magnitude relationship between a pressure difference of the refrigeration system and a preset first pressure threshold and a preset second pressure threshold, wherein the preset first pressure threshold is less than the preset second pressure threshold; If it is determined that the pressure difference of the refrigeration system is less than a preset first pressure threshold, reducing the initial opening angle of the shutter to obtain a current opening angle of the shutter; If it is determined that the pressure difference of the refrigeration system is greater than or equal to a preset first pressure threshold and less than or equal to a preset second pressure threshold, maintaining the initial opening angle of the louver and obtaining a current opening angle of the louver; If it is determined that the pressure difference of the refrigeration system is greater than a preset second pressure threshold, the initial opening angle of the shutter is increased to obtain the current opening angle of the shutter.

5. The air conditioner control method according to claim 3 or 4, characterized in that: The method further includes adjusting the initial opening angle of the shutter according to at least one of the condensing pressure of the condenser and the evaporating pressure of the evaporator to obtain the current opening angle of the shutter: When the outdoor ambient temperature of the air conditioner is lower than a preset temperature limit, controlling the shutter device to close; When the condensing pressure of the condenser is greater than a preset pressure limit, the initial opening angle of the louver is adjusted according to the condensing pressure of the condenser to obtain the current opening angle of the louver.

6. The air conditioner control method according to claim 5, characterized in that: Adjusting the initial opening angle of the shutter according to the condensing pressure of the condenser to obtain the current opening angle of the shutter includes: determining a condensing pressure rising rate of the condenser according to the condensing pressure of the condenser; Determining a calculation coefficient according to a condensing pressure rising rate of the condenser and a preset target pressure difference at an initial opening angle of the shutter; The product of the calculation coefficient, the condensing pressure rising rate of the condenser, and the initial opening angle of the shutter is used as the ratio of the preset target pressure difference at the initial opening angle of the shutter as the current opening angle of the shutter.

7. The air conditioner control method according to any one of claims 1 to 6, characterized in that: Controlling the shutter device to open according to the current opening angle of the shutter so that the refrigeration system operates within a preset condensing pressure range includes: Controlling the shutter device to open according to the current opening angle of the shutter; After a set time, determining whether the pressure value of the refrigeration system is within a preset condensing pressure range; If it is determined that the pressure value of the refrigeration system is within a preset condensing pressure range, controlling the air conditioner to maintain current operation; If it is determined that the pressure value of the refrigeration system is not within the preset condensing pressure range, returning to adjust the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter; The process is circulated sequentially until the pressure value of the refrigeration system is within the preset condensing pressure range.

8. A control device for an air conditioner, characterized in that: The air conditioner can dissipate heat from the vehicle-mounted cabinet; the air conditioner has a refrigeration system, the refrigeration system has a condenser and an evaporator, and a shutter device is provided on the air inlet side of the condenser, and the opening angle of the shutter in the shutter device can be adjusted; The air conditioner control method includes: an acquiring unit configured to acquire the outdoor ambient temperature of the air conditioner after the air conditioner is powered on and before it is turned on; a control unit configured to determine an initial opening angle of the shutter according to an outdoor ambient temperature of the air conditioner; and control the shutter device to open according to the initial opening angle of the shutter; The acquisition unit is further configured to acquire a pressure value of the refrigeration system after the air conditioner is turned on; The control unit is also configured to adjust the initial opening angle of the shutter according to the pressure value of the refrigeration system to obtain the current opening angle of the shutter; and control the shutter device to open according to the current opening angle of the shutter so that the refrigeration system operates within a preset condensing pressure range.

9. An air conditioner, characterized in that: include: The air conditioner control device according to claim 8.

10. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the air conditioner control method according to any one of claims 1 to 7.

11. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the air conditioner control method according to any one of claims 1 to 7 are implemented.

Images