Electrical control box and its temperature control method, control device, air conditioning equipment

Abstract

This application relates to an electrical control box and its temperature control method, control device, and air conditioning equipment. The electrical control box includes: a box body with spaced-apart openings and at least one vent; electrical components disposed within the box body and capable of generating heat; a first detection device disposed within the box body and used to detect environmental parameters within the box body; an air valve disposed at the opening and used to communicate with the evaporator chamber of the air conditioning equipment; and a control device connected to the first detection device and the air valve, used to control the opening degree of the air valve according to the environmental parameters. The electrical control box of this application can utilize the low-temperature airflow and negative pressure of the evaporator chamber to remove heat from the electrical control box, improving its heat dissipation capacity and ensuring stable operation even under harsh working conditions.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an electrical control box and its temperature control method, control device, and air conditioning equipment. Background Technology

[0002] Currently, most inverter air conditioners use refrigerant or natural air cooling for their control box drive boards. Using refrigerant requires a separate refrigeration unit, resulting in a complex structure and large installation space requirements, making it unsuitable for space-constrained air conditioning units, such as modular inverter air conditioners. Natural air cooling, on the other hand, has poor air convection cooling in high-temperature environments, failing to meet the control box's cooling requirements and leading to component failure. Summary of the Invention

[0003] This application provides an electrical control box and its temperature control method, control device, and air conditioning equipment to solve the problem that equipment with high space constraints has poor air convection heat dissipation when operating in high-temperature environments, which cannot meet the heat dissipation requirements of the electrical control box and is prone to component failure.

[0004] In a first aspect, this application provides an electrical control box, the electrical control box comprising: a box body having spaced-apart openings and at least one vent; an electrical component disposed within the box body and capable of generating heat; a first detection device disposed within the box body and used to detect environmental parameters within the box body; an air valve disposed at the opening and used to communicate with the evaporator chamber of an air conditioning unit; and a control device connected to the first detection device and the air valve and used to control the opening degree of the air valve according to the environmental parameters.

[0005] In one possible implementation, the enclosure has a first compartment and a second compartment, which may or may not be connected. The electrical components are disposed in the second compartment, and the opening and at least one vent are disposed on the outer wall of the first compartment. The environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment. The first detection device includes: a first temperature detection device disposed in the first compartment and used to detect the ambient temperature of the first compartment; and / or, a second temperature detection device and a humidity detection device disposed in the second compartment, wherein the second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and humidity of the second compartment.

[0006] In other words, in this implementation, in order to reduce the risk of condensation in the electrical control box due to low temperature, the low-temperature air in the evaporation chamber can enter the first compartment, which can act as a radiator to dissipate heat to the second compartment. The control device can adjust the opening of the air valve according to the ambient temperature of the first compartment and the dew point temperature of the second compartment.

[0007] In one possible implementation, the electrical control box further includes a radiator disposed within the first compartment near the second compartment.

[0008] In other words, in this implementation, in order to better dissipate heat from the second compartment, a radiator can be installed in the first compartment, which can concentrate as much of the low-temperature air in the first compartment as possible in the second compartment.

[0009] In one possible implementation, the housing includes an outer shell and a partition, the partition being disposed within the outer shell and dividing the outer shell into a first compartment and a second compartment, the opening and the at least one vent being disposed at the portion of the outer shell forming the first compartment; wherein: the partition makes the first compartment and the second compartment independent of each other; or, the partition is provided with at least one opening, the first compartment and the second compartment being connected through the at least one opening.

[0010] In other words, in this implementation, a partition can be set inside the outer shell to divide the space inside the outer shell into a first compartment and a second compartment. The structure is simple and helps to reduce costs.

[0011] In one possible implementation, the electrical component includes a drive board, and the electrical control box includes a second detection device disposed on the drive board and used to detect the temperature of the drive board; wherein: the control device is used to control the opening degree of the air valve according to the environmental parameters when the temperature of the drive board is greater than or equal to a first preset temperature threshold; and / or, the control device is used to control the air valve to close when the temperature of the drive board is less than or equal to a second preset temperature threshold.

[0012] In other words, in this implementation, the temperature of the heating element in the electrical components, such as the drive board, can be used to determine whether it is necessary to close or open the air valve and adjust the opening degree of the air valve.

[0013] Secondly, this application provides an air conditioning device, which includes an evaporator chamber and the aforementioned electrical control box, wherein the air valve of the electrical control box is connected to the evaporator chamber.

[0014] Thirdly, this application provides a temperature control method for an electrical control box, the temperature control method comprising: acquiring environmental parameters detected by a first detection device, wherein the first detection device is disposed inside the electrical control box, the box being provided with an opening and at least one vent at intervals, and an electrical component capable of generating heat being disposed inside the box; controlling the opening degree of a vent valve disposed at the opening according to the environmental parameters, wherein the vent valve is connected to the evaporator chamber of an air conditioning device.

[0015] In other words, in this implementation, a flow channel can be set between the electrical control box and the evaporation chamber. The low-temperature airflow and negative pressure in the evaporation chamber can carry away the heat from the electrical control box, thereby improving the heat dissipation capacity of the electrical control box and ensuring that the air conditioner can operate stably under harsh conditions. Furthermore, the first detection device and the control device can work together to flexibly control the temperature of the electrical control box, thereby effectively preventing condensation from forming inside the electrical control box and ensuring that the components can work normally.

[0016] In one possible implementation, the electrical control box has a first compartment and a second compartment, which may or may not be connected. The electrical components are disposed in the second compartment, and the opening and at least one vent are disposed on the outer wall of the first compartment. The environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment. The first detection device includes: a first temperature detection device disposed in the first compartment and used to detect the ambient temperature of the first compartment; and / or, a second temperature detection device and a humidity detection device disposed in the second compartment, wherein the second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and humidity of the second compartment.

[0017] In one possible implementation, controlling the opening degree of the air valve at the opening according to the environmental parameters includes: determining the sum of the dew point temperature of the second compartment and a first preset value; when the ambient temperature of the first compartment is less than the sum value, controlling the opening degree of the air valve at the opening to decrease by the first preset value; when the ambient temperature of the first compartment is greater than or equal to the sum value, controlling the opening degree of the air valve at the opening to remain unchanged or increase.

[0018] In other words, in this implementation, when the ambient temperature of the first compartment is low, the opening of the air valve can be reduced based on the comparison between the ambient temperature of the first compartment and the dew point temperature of the second compartment, so as to increase the ambient temperature of the first compartment and thus prevent condensation.

[0019] In one possible implementation, controlling the opening degree of the air valve provided at the opening according to the environmental parameters includes: determining the difference between the dew point temperature of the second compartment and a second preset value; when the ambient temperature of the first compartment is greater than the difference, controlling the opening degree of the air valve provided at the opening to increase the second preset value; when the ambient temperature of the first compartment is less than or equal to the difference, controlling the opening degree of the air valve provided at the opening to remain unchanged or decrease.

[0020] In other words, in this implementation, when the ambient temperature of the first compartment is high, the opening of the air valve can be increased based on the comparison between the ambient temperature of the first compartment and the dew point temperature of the second compartment, so as to reduce the ambient temperature of the first compartment as quickly as possible while preventing condensation.

[0021] In one possible implementation, the temperature control method further includes: re-executing the step of acquiring the environmental parameters at preset intervals to obtain updated environmental parameters; and controlling the opening degree of the air valve set at the opening according to the updated environmental parameters.

[0022] In other words, in this implementation method, in order to prevent condensation and achieve rapid cooling of the electrical control box, after adjusting the opening of the air valve based on the acquired environmental parameters, the updated environmental parameters can be acquired again to further adjust the opening of the air valve.

[0023] In one possible implementation, the temperature control method further includes: acquiring the temperature of the drive board detected by a second detection device, the second detection device being disposed at the drive board of the electrical control box; when it is determined that the temperature of the drive board is greater than or equal to a first preset temperature threshold, controlling the opening degree of the air valve disposed at the opening according to the environmental parameters; when it is determined that the temperature of the drive board is less than or equal to a second preset temperature threshold, controlling the air valve disposed at the opening to close.

[0024] Fourthly, this application provides a control device for an electrical control box, the control device comprising: an acquisition module for acquiring environmental parameters detected by a first detection device, wherein the first detection device is disposed inside the electrical control box, the box being provided with an opening and at least one vent at intervals, and an electrical component capable of generating heat is disposed inside the box; and a control module for controlling the opening degree of a damper disposed at the opening according to the environmental parameters, wherein the damper is connected to the evaporator chamber of an air conditioning unit.

[0025] Fifthly, this application provides an air conditioning device, which includes a processor and a memory. The processor is used to execute a control program for an electrical control box stored in the memory to implement the steps of the temperature control method for the electrical control box described in the third aspect above.

[0026] Sixthly, this application also provides a computer storage medium storing computer-executable instructions for performing the steps of the temperature control method for the electrical control box described in the third aspect above.

[0027] Compared with the prior art, the above-mentioned technical solution provided in this application embodiment has the following advantages: The electrical control box provided in this application embodiment has openings and at least one vent spaced on the box body. The first detection device can detect the environmental parameters inside the box, and the control device can control the opening degree of the air valve located at the opening of the box body and connected to the evaporation chamber according to the environmental parameters detected by the first detection device. This realizes the use of low-temperature airflow and negative pressure in the evaporation chamber to remove the heat of the electrical control box, thereby improving the heat dissipation capacity of the electrical control box and ensuring that the electrical control box can operate stably under harsh working conditions. In addition, the first detection device and the control device can work together to flexibly control the temperature of the electrical control box, thereby effectively preventing condensation inside the electrical control box and ensuring that the components inside the electrical control box can work normally. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0031] Figure 1 This is a schematic diagram of the structure of an electrical control box provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of an air conditioning device provided in an embodiment of this application;

[0033] Figure 3 A schematic flowchart illustrating a temperature control method for an electrical control box provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of a control device for an electrical control box provided in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of another air conditioning device provided in an embodiment of this application. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0038] To address the technical problem in existing technologies where space-constrained equipment operates poorly in high-temperature environments due to poor air convection heat dissipation, failing to meet the heat dissipation requirements of the electrical control box and easily leading to component failure, this application provides an electrical control box and its temperature control method, control device, and air conditioning equipment. The electrical control box has openings and at least one vent spaced apart on its body. A first detection device can detect environmental parameters inside the box, and the control device can control the opening of a vent valve located at the opening of the box and connected to the evaporation chamber based on the environmental parameters detected by the first detection device. This allows the low-temperature airflow and negative pressure within the evaporation chamber to remove heat from the electrical control box, improving its heat dissipation capacity and ensuring stable operation even under harsh conditions. Furthermore, the first detection device and the control device can work together to flexibly control the temperature of the electrical control box, effectively preventing condensation inside and ensuring the normal operation of the components within the box.

[0039] Figure 1 This is a schematic diagram of the structure of an electrical control box provided in an embodiment of this application. Figure 1As shown, the electrical control box includes a housing 1, electrical components 2, a first detection device 3, an air valve 4, and a control device (not shown in the figure). The electrical components 2 are housed within the housing 1 and are capable of generating heat. Exemplarily, the electrical components 2 may include a switching power supply, a drive board, a main board, a transformer, an inductor, a reactor, etc. The first detection device 3 is housed within the housing 1 and is used to detect environmental parameters within the housing 1. The housing 1 has spaced-apart openings K and at least one vent Q. The air valve 4 is located at the opening K and is used to communicate with the evaporator chamber of the air conditioning unit. The control device is connected to the first detection device 3 and the air valve 4 and is used to control the opening degree of the air valve 4 according to the environmental parameters.

[0040] At least one vent Q allows air from outside the housing 1 to enter the housing 1, and the opening K allows low-temperature gas from the evaporation chamber to enter the housing 1. High-temperature air inside the housing 1 can also flow out through the opening K, thereby cooling the electrical components 2.

[0041] In related technologies, to dissipate heat from the drive board of the control box, the inverter air conditioner drive board can be placed near the return air vent of the evaporator chamber. A high-efficiency heat exchange structure is installed at the return air vent, and the return air carries away the heat from the heat exchange structure, thus cooling the drive board. However, this method of using return airflow to cool the control box places high demands on its placement, requiring it to be located near the return air vent, which significantly impacts the structural layout of the air conditioner. Furthermore, under high-temperature conditions, the drive board's heat dissipation is ineffective, failing to meet the air conditioner's cooling requirements in high-temperature environments, easily causing protection trips or component burnout.

[0042] In the electrical control box of this application embodiment, the box body 1 is provided with an opening K and at least one vent Q at intervals. The control device can control the opening degree of the air valve 4, which is located at the opening K of the box body 1 and is connected to the evaporation chamber, according to the environmental parameters detected by the first detection device 3, so as to change the ventilation volume. This realizes the use of low-temperature airflow and negative pressure in the evaporation chamber to remove the heat of the electrical control box, thereby improving the heat dissipation capacity of the electrical control box and ensuring that the electrical control box can operate stably under harsh working conditions. Furthermore, the first detection device 3 and the control device can work together to flexibly control the temperature of the electrical control box, thereby effectively preventing condensation inside the electrical control box while dissipating heat, and ensuring that the components inside the electrical control box can work normally.

[0043] To better reduce the risk of condensation inside the electrical control box due to excessively low temperatures, for example, in Figure 1 In the middle, the box body 1 has a first compartment G1 and a second compartment G2, the first compartment G1 and the second compartment G2 are connected or not connected, the electrical component 2 is disposed in the second compartment G2, and the opening K and at least one air hole Q are disposed on the outer wall of the first compartment G1.

[0044] At least one vent Q is used to allow air from outside the housing 1 to enter the first compartment G1. The opening K allows high-temperature gas in the first compartment G1 to flow out and low-temperature gas in the evaporation chamber to enter the first compartment G1, so that the first compartment G1 acts as a heat dissipation layer to cool the electrical components 2. When the first compartment G1 and the second compartment G2 are connected, the high-temperature gas in the second compartment G2 can first reach the first compartment G1 and then flow out of the first compartment G1 through the opening K and the air valve 4.

[0045] In some embodiments, in order to better dissipate heat from the second compartment G2, the electrical control box also includes a radiator 5, which is disposed in the first compartment G1 close to the second compartment G2.

[0046] The environmental parameters may include the ambient temperature of the first compartment G1 and the dew point temperature of the second compartment G2. Figure 1 In this example, the first detection device 3 may include a first temperature detection device 31 and / or a second temperature detection device 32 and a humidity detection device S. The first temperature detection device 31 is disposed in the first compartment G1 and is used to detect the ambient temperature of the first compartment G1. The second temperature detection device 32 and the humidity detection device S are disposed in the second compartment G2. The second temperature detection device 32 is used to detect the ambient temperature of the second compartment G2, and the humidity detection device S is used to detect the ambient humidity of the second compartment G2. The dew point temperature of the second compartment G2 is obtained based on the ambient temperature and ambient humidity of the second compartment G2.

[0047] For example, the formula for calculating the dew point temperature can be as follows: Tw = 237.7 * [(17.27 * Tw] 外环 ) / (237.7+T 外环 )+ln(RH 外环 / 100)] / [17.27-(17.27·T 外环 ) / (237.7+T 外环 )-ln(RH 外环 [ / 100)], Tw is the dew point temperature, in °C; T 外环 Ambient temperature (outdoor dry-bulb temperature), unit: °C; RH 外环 Relative humidity, in percent.

[0048] As can be seen from the above formula for calculating dew point temperature, as long as the ambient temperature T is detected... 外环 (i.e., the ambient temperature of the second compartment G2, which can be obtained by detecting the second temperature detection device 32) and relative humidity RH 外环 (That is, the ambient humidity of the second compartment G2 can be obtained by detecting the humidity detection device S), and the dew point temperature Tw of the second compartment G2 of the electrical control box can be obtained.

[0049] Furthermore, the control device can control the opening degree of the damper 4 based on the comparison between the ambient temperature of the first compartment G1 and the dew point temperature of the second compartment G2 to adjust the ventilation volume. For example, the initial opening angle of the damper 4 is set to 45° (0° for the damper blade is closed, and 90° is fully open), T1 is the ambient temperature of the first compartment G1 (which can be obtained by detecting the first temperature detection device 31), and Tw is the dew point temperature of the second compartment G2. When T1 < Tw + 5°, the damper blade angle decreases by 5°, and the cycle period is set to 20 seconds. If T1 < Tw + 5° is still true, the damper blade angle decreases by 5° until T1 > Tw + 5°. When T1 > Tw - 5°, the damper blade angle increases by 5°, and the cycle period is set to 20 seconds. If T1 > Tw - 5° is still true, the damper blade angle increases by 5° until T1 < Tw - 5°.

[0050] In addition, in order to divide the space inside the box 1 into a first compartment G1 and a second compartment G2, for example, as follows: Figure 1 As shown, the housing 1 includes an outer shell 11 and a partition 12. The partition 12 is disposed within the outer shell 11 and divides the outer shell 11 into a first compartment G1 and a second compartment G2. An opening K and at least one vent Q are disposed at the portion of the outer shell 11 forming the first compartment G1. In some embodiments, the partition 12 makes the first compartment G1 and the second compartment G2 independent of each other. In other embodiments, the partition 12 is provided with at least one opening, and the first compartment G1 and the second compartment G2 are connected through the at least one opening.

[0051] The electrical control box has two compartments: the first compartment G1 is the first layer, with a height of n (a positive number). This first layer serves as a heat dissipation layer and can be placed on any side of the box. The second compartment G2 is the second layer, making it a double-layer electrical control box. Furthermore, the air valve (controlled by a stepper motor) can be located on the side of the first layer facing the evaporator cavity of the air conditioning unit. The size of the passage between the first layer and the evaporator cavity is controlled by adjusting the angle of the air valve's blades.

[0052] The double-layer electrical control box structure of this application embodiment includes a flow channel controlled by an air valve. This flow channel is connected to the evaporator chamber, and the control device can control the valve opening size to regulate the low-temperature airflow from the evaporator chamber for heat dissipation from the electrical control box. In an air conditioning unit with this electrical control box installed, the air conditioning unit can be controlled to cool first, and then the cooling energy can be transferred to the electrical control box through the aforementioned flow channel and heat dissipation structure. Furthermore, by controlling the temperature of the first layer of the electrical control box, condensation can be prevented from forming inside the box while ensuring rapid cooling.

[0053] The electrical component 2 may include a drive board, and the control box includes a second detection device 6, which is disposed at the drive board and used to detect the temperature of the drive board. In some embodiments, the control device is used to control the opening degree of the air valve 4 according to environmental parameters when the temperature of the drive board is greater than or equal to a first preset temperature threshold. In other embodiments, the control device is used to control the air valve 4 to close when the temperature of the drive board is less than or equal to a second preset temperature threshold. This allows for determination of whether to close or open the air valve and adjustment of its opening degree based on the temperature of the heating element in the electrical component, such as the drive board.

[0054] For example, the first preset temperature threshold can be 70°C, and the second preset temperature threshold can be 50°C. T2 is the temperature on the drive board inside the electrical control box. When T2 ≥ 70°C, the air valve 4 is activated. The control device can control the opening of the air valve 4 based on the comparison between the ambient temperature of the first compartment G1 and the dew point temperature of the second compartment G2, allowing low-temperature airflow to enter the first compartment G1 to cool the electrical control box. When T2 ≤ 50°C, the air valve 4 is closed. This scheme of controlling the temperature of the first compartment G1 of the electrical control box ensures that condensation does not occur inside the box while it cools down rapidly.

[0055] Figure 2 This is a structural schematic diagram of an air conditioning device provided in an embodiment of this application. Figure 2 As shown, the air conditioning unit includes an evaporator chamber 10 and the aforementioned electrical control box 20, with the air valve 4 of the electrical control box 20 connected to the evaporator chamber 10. For example, the air conditioning unit can be an integrated inverter air conditioner.

[0056] For example, in Figure 2 In this case, the air conditioning equipment may also include an evaporator 30 and a fan 40. The evaporation chamber 10 has an air inlet and an air outlet. The evaporator 30 is located at the air inlet, and the fan 40 is located at the air outlet. In addition, the air conditioning equipment may also include components such as a compressor and a condenser connected to the evaporator 30 to form a refrigeration cycle loop.

[0057] The compressor can be a variable frequency compressor. The compressor operates within a set frequency controlled by the drive board of the electrical control box, discharging high-temperature gas (e.g., around 80°C, depending on the operating conditions). The high-temperature gas enters the condenser for heat exchange, and its temperature decreases after heat exchange (e.g., to around 50°C). Then, after passing through the electronic expansion valve and adjusting its opening, it becomes a low-temperature liquid. The liquid enters the evaporator for heat exchange. The frequency of the variable frequency air conditioner compressor is mainly adjusted by the drive board. The MCU on the drive board generates significant heat. Under high-temperature conditions, the MCU will generate a large amount of heat. At this time, air heat exchange alone cannot meet the heat dissipation requirements, and an effective heat dissipation solution is needed to solve the heat dissipation problem of the drive board.

[0058] The air conditioning equipment of this application embodiment can use the low-temperature airflow in the evaporator chamber to dissipate heat from the electrical control box of the inverter air conditioner. Furthermore, the valve opening size of the air valve can be adjusted according to different ambient temperatures inside the electrical control box to control the temperature of the heat dissipation area of ​​the electrical control box, effectively solving the problem of poor heat dissipation of the electrical control box under high-temperature operating conditions.

[0059] The electrical control box can be a double-layer electrical control box. The electrical components are located in the second layer (i.e., the second compartment), and the first layer (i.e., the first compartment) is a chamber with vents. The chamber is equipped with a flow channel controlled by a wind valve. The flow channel is connected to the evaporation chamber. The wind valve can control the size of the air valve opening. Since the evaporation chamber is under negative pressure, when the wind valve is opened, the first layer of the electrical control box will form a flow channel. The heat of the electrical control box will be carried away by the flow channel, thereby effectively dissipating heat from the electrical control box.

[0060] Figure 3 This is a flowchart illustrating a temperature control method for an electrical control box provided in an embodiment of this application. The electrical control box can be... Figure 1 The electrical control box shown. (As shown) Figure 3 As shown, the temperature control method may include the following steps:

[0061] S301, acquire the environmental parameters detected by the first detection device, wherein the first detection device is installed inside the electrical control box, the box has openings and at least one vent spaced apart, and the box contains electrical components capable of generating heat.

[0062] For details regarding the electrical control box, please refer to [link / reference]. Figure 1 and Figure 2 The relevant description is as follows. For example, the electrical control box has a first compartment and a second compartment, which may or may not be connected. Electrical components are located in the second compartment, and an opening and at least one vent are located on the outer wall of the first compartment. The first detection device includes a first temperature detection device and / or a second temperature detection device and a humidity detection device. The first temperature detection device is located in the first compartment and is used to detect the ambient temperature of the first compartment. The second temperature detection device and the humidity detection device are located in the second compartment. The second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and humidity of the second compartment. Environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment.

[0063] S302 controls the opening degree of the air valve set at the opening according to environmental parameters, wherein the air valve is connected to the evaporator chamber of the air conditioning equipment.

[0064] For example, when the environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment, the opening degree of the air valve set at the opening can be controlled according to the environmental parameters in, but is not limited to, the following two ways:

[0065] Method 1: First, determine the sum of the dew point temperature of the second compartment and a first preset value. Then, if the ambient temperature of the first compartment is less than the sum, control the opening of the air valve at the opening to decrease by the first preset value; if the ambient temperature of the first compartment is greater than or equal to the sum, control the opening of the air valve to remain unchanged or increase, for example, increase a third preset value, which is less than the first preset value. For example, the first preset value may be 5°C, and the third preset value may be 3°C. In other embodiments, the first and third preset values ​​may be other values.

[0066] Method 2: First, determine the difference between the dew point temperature of the second compartment and a second preset value. Then, if the ambient temperature of the first compartment is greater than the difference, increase the opening of the air valve at the opening by the second preset value; if the ambient temperature of the first compartment is less than or equal to the difference, keep the opening of the air valve unchanged or decrease it, for example, decrease it by a fourth preset value, which is less than the second preset value. For example, the second preset value may be 5°C, and the fourth preset value may be 3°C. In other embodiments, the second and fourth preset values ​​may be other values.

[0067] In addition, after performing the step of controlling the opening degree of the air valve set at the opening according to environmental parameters, the step of obtaining environmental parameters can be repeated at a preset time interval to obtain updated environmental parameters; then, the opening degree of the air valve set at the opening can be controlled according to the updated environmental parameters. For example, the preset time interval can be 20 seconds.

[0068] Furthermore, the temperature control method may also include: acquiring the temperature of the drive board detected by a second detection device, the second detection device being installed at the drive board of the electrical control box; when it is determined that the temperature of the drive board is greater than or equal to a first preset temperature threshold, controlling the opening degree of the air valve installed at the opening according to environmental parameters; when it is determined that the temperature of the drive board is less than or equal to a second preset temperature threshold, controlling the air valve installed at the opening to close.

[0069] Taking a first and second preset value of 5℃ and a preset duration of 20 seconds as an example, the initial opening angle of the damper is set to 45° (0° for the damper blades indicates a closed state, and 90° indicates a fully open state). T1 is the ambient temperature of the first compartment G1, T2 is the temperature of the drive plate, and Tw is the dew point temperature of the second compartment G2, where:

[0070] 1) When T2≥70℃, the heat dissipation effect is poor and the compressor is prone to tripping the protection. At this time, start the air valve to allow the low temperature airflow to enter the first layer (first compartment G1) to cool down the electrical control box.

[0071] Because the temperature of the electrical control box is high, while the temperature of the evaporation chamber is around 12°C and the interior is under negative pressure, when the air valve is activated, a flow channel will be formed on the first layer of the electrical control box. The heat will be carried out through the flow channel by the fan located at the air outlet of the evaporation chamber, thus effectively dissipating heat from the drive board.

[0072] 2) In order to effectively cool down and prevent condensation, when T1 < Tw (dew point temperature) + 5℃, the blade angle of the control valve is reduced by 5°, and the cycle is set to 20S. If T1 < Tw + 5℃ still holds, the blade angle of the control valve is reduced by 5° until T1 > Tw + 5℃.

[0073] 3) In order to cool down quickly without condensation, when T1 > Tw-5℃, the blade angle of the control valve is increased by 5° and the cycle period is set to 20S. If T1 > Tw-5℃ still holds true, the blade angle of the control valve is increased by 5° until T1 < Tw-5℃.

[0074] 4) When T2≤50°, the control air valve is closed.

[0075] The above heat dissipation scheme enables the electrical control box to cool down rapidly without condensation, ensuring the safe, stable, and reliable operation of the unit. The heat dissipation layer of the double-layer electrical control box can be placed on any surface or in any shape, and the height h (h > 0) of the heat dissipation layer can be set to any value.

[0076] In other embodiments, the initial angle of the damper, 45°, can be replaced by n°, where n ranges from 0 to 90; the temperature of electrical components such as the drive board, T2 > 70°C, can be replaced by T2 > m°C, where m can be a positive integer; T1 < Tw (dew point temperature) + 5°C can be replaced by T1 < Tw (dew point temperature) + a°C, where a can be a positive number. Closing the damper angle by 5° can be replaced by closing the damper angle by b°, where b ranges from 0 to 90; the cycle period of 20S can be replaced by setting the cycle period to cS, where c is a positive integer; T1 > Tw - 5°C can be replaced by T1 > Tw - d°C, where d can be a positive number. Opening the damper angle by 5° can be replaced by opening the damper angle by e°, where e ranges from 0 to 90; the cycle period of 20S can be replaced by setting the cycle period to fS, where f is a positive integer.

[0077] The temperature control method of the electrical control box in this application embodiment can be applied to... Figure 1 and Figure 2The double-layer electrical control box shown has a first detection device (including a temperature detection device such as a temperature sensor and a humidity detection device such as a humidity sensor). Based on the environmental parameters detected by the first detection device, the blade angle of the air valve is controlled, thereby controlling the size of the flow channel opening between the evaporation chamber and the electrical control box. This allows adjustment of the temperature of the first layer (i.e., the first compartment) of the electrical control box, which then acts as a heat dissipation layer to cool the second layer (i.e., the second compartment) containing the electrical components. Furthermore, by controlling the temperature of the first layer of the electrical control box, condensation inside the box is prevented during rapid cooling.

[0078] Figure 4 This is a schematic diagram of the structure of a control device for an electrical control box provided in an embodiment of this application. Figure 4 As shown, the control device of the electrical control box includes an acquisition module 401 and a control module 402. The acquisition module 401 acquires environmental parameters detected by a first detection device, which is housed within the electrical control box. The box has openings and at least one vent spaced apart, and electrical components capable of generating heat are installed inside the box. The control module 402 controls the opening degree of a damper located at the opening based on the environmental parameters. The damper is connected to the evaporator chamber of the air conditioning unit.

[0079] In one possible implementation, the electrical control box has a first compartment and a second compartment, which may or may not be connected. The electrical components are disposed in the second compartment, and the opening and at least one vent are disposed on the outer wall of the first compartment. The environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment. The first detection device includes: a first temperature detection device disposed in the first compartment and used to detect the ambient temperature of the first compartment; and / or, a second temperature detection device and a humidity detection device disposed in the second compartment, wherein the second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and humidity of the second compartment.

[0080] In one possible implementation, the control module 402 is specifically configured to: determine the sum of the dew point temperature of the second compartment and a first preset value; when the ambient temperature of the first compartment is less than the sum, control the opening of the air valve at the opening to decrease by the first preset value; when the ambient temperature of the first compartment is greater than or equal to the sum, control the opening of the air valve to remain unchanged or increase.

[0081] In one possible implementation, the control module 402 is specifically configured to: determine the difference between the dew point temperature of the second compartment and a second preset value; when the ambient temperature of the first compartment is greater than the difference, control the opening of the air valve to increase by a second preset value; when the ambient temperature of the first compartment is less than or equal to the difference, control the opening of the air valve to remain unchanged or decrease.

[0082] In one possible implementation, the control module 402 is further configured to: re-execute the step of acquiring the environmental parameters at preset intervals to obtain updated environmental parameters; and control the opening degree of the air valve set at the opening according to the updated environmental parameters.

[0083] In one possible implementation, the control module 402 is further configured to: acquire the temperature of the drive board detected by the second detection device, the second detection device being located at the drive board of the electrical control box; control the opening degree of the air valve located at the opening according to the environmental parameters when the temperature of the drive board is determined to be greater than or equal to a first preset temperature threshold; and control the air valve located at the opening to close when the temperature of the drive board is determined to be less than or equal to a second preset temperature threshold.

[0084] Figure 5 This is a schematic diagram of another air conditioning device provided in an embodiment of this application. Figure 5 As shown, the air conditioning unit 500 includes at least one processor 501, a memory 502, at least one network interface 504, and other user interfaces 503. The various components in the air conditioning unit 500 are coupled together via a bus system 505. It is understood that the bus system 505 is used to implement communication between these components. In addition to a data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 5 The general designated all buses as Bus System 505.

[0085] The user interface 503 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0086] It is understood that the memory 502 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 502 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0087] In some implementations, memory 502 stores executable units or data structures, or subsets thereof, or extended sets thereof. For example, memory 502 includes an operating system 5021 and application programs 5022. The operating system 5021 contains various system programs, such as a framework layer, core library layer, and driver layer, for implementing various basic services and handling hardware-based tasks. Application programs 5022 contain various applications, such as a media player and a browser, for implementing various application services. Programs implementing the methods of the embodiments of this application may be included in application programs 5022.

[0088] In this embodiment of the application, by calling the program or instructions stored in the memory 502, specifically the program or instructions stored in the application program 5022, the processor 501 is used to execute the method steps provided in each method embodiment, such as: acquiring environmental parameters detected by the first detection device, wherein the first detection device is installed inside the box of the electrical control box, the box is provided with openings and at least one vent at intervals, and the box is provided with electrical components capable of generating heat; controlling the opening degree of the air valve provided at the opening according to the environmental parameters, wherein the air valve is connected to the evaporation chamber of the air conditioning equipment.

[0089] The methods disclosed in the embodiments of this application can be applied to or implemented by processor 501. Processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 501 or by instructions in the form of software. The processor 501 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software units in the decoding processor. The software units may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 502. Processor 501 reads the information in memory 502 and, in conjunction with its hardware, completes the steps of the above method.

[0090] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0091] For software implementation, the techniques described herein can be implemented by units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0092] The air conditioning equipment provided in this embodiment can be as follows: Figure 5 The air conditioning equipment shown can perform the following functions: Figure 3 All steps of the temperature control method in the central electrical control box, thereby achieving... Figure 3 For details on the technical effectiveness of the temperature control method in the electrical control box shown, please refer to [link / reference needed]. Figure 3 The relevant descriptions are presented concisely and will not be elaborated upon here.

[0093] This application also provides a storage medium (computer-readable storage medium). This storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; or it may include combinations of the above types of memory. One or more programs in the storage medium can be executed by one or more processors to implement the temperature control method for the electrical control box described above.

[0094] The processor is used to execute the processing program of the electrical control box stored in the memory to implement the following steps of the temperature control method of the electrical control box, such as: acquiring environmental parameters detected by a first detection device, wherein the first detection device is installed inside the electrical control box, the box has openings and at least one vent spaced apart, and electrical components capable of generating heat are installed inside the box; controlling the opening degree of the air valve installed at the opening according to the environmental parameters, wherein the air valve is connected to the evaporation chamber of the air conditioning equipment.

[0095] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0096] It should be noted that the terms "one implementation," "embodiment," "exemplary embodiment," and "some embodiments" used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0097] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electrical control box, characterized in that, include: The housing has spaced-apart openings and at least one vent. The openings allow hot air inside the housing to flow out to the evaporator chamber of an air conditioning unit, or allow low-temperature gas from the evaporator chamber to enter the housing. The vent allows air from outside the housing to enter the housing. The housing has a first compartment and a second compartment, which are connected. The openings and the at least one vent are located on the outer wall of the first compartment. An electrical component is disposed within the enclosure and is capable of generating heat; wherein the electrical component is disposed within the second compartment, the electrical component includes a drive board, and the electrical control box includes a second detection device disposed at the drive board and used to detect the temperature of the drive board; A first detection device is disposed inside the enclosure and is used to detect environmental parameters inside the enclosure; wherein, the environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment; the first detection device includes: A first temperature detection device is installed inside the first compartment and is used to detect the ambient temperature of the first compartment. A second temperature detection device and a humidity detection device are installed in the second compartment. The second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and ambient humidity of the second compartment. An air valve is provided at the opening and is used to communicate with the evaporation chamber; A control device, connected to the first detection device and the air valve, is used to control the opening degree of the air valve according to the environmental parameters when the temperature of the drive plate is greater than or equal to a first preset temperature threshold.

2. The electrical control box according to claim 1, characterized in that, Also includes: The radiator is located in the first compartment near the second compartment.

3. The electrical control box according to claim 1, characterized in that, The housing includes an outer shell and a partition. The partition is disposed within the outer shell and divides the outer shell into a first compartment and a second compartment. The opening and the at least one vent are disposed at the portion of the outer shell forming the first compartment. Wherein: The partition makes the first compartment and the second compartment independent of each other; or... The partition has at least one opening, and the first compartment and the second compartment are connected through the at least one opening.

4. The electrical control box according to any one of claims 1-3, characterized in that, The control device is also used to control the air valve to close when the temperature of the drive plate is less than or equal to a second preset temperature threshold.

5. An air conditioning device, characterized in that, The air conditioning equipment includes an evaporator chamber and an electrical control box according to any one of claims 1-4, wherein the air valve of the electrical control box is connected to the evaporator chamber.

6. A temperature control method for an electrical control box, characterized in that, The temperature control method includes: The first detection device is installed inside the electrical control box. The box has openings and at least one vent. The openings allow hot air inside the box to flow out to the evaporator chamber of the air conditioning unit, or allow low-temperature gas in the evaporator chamber to enter the box. The vents allow air outside the box to enter the box. The box contains electrical components that can generate heat. The electrical control box has a first compartment and a second compartment, which are connected. The electrical components are installed in the second compartment. The openings and at least one vent are installed on the outer wall of the first compartment. The environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment, and the first detection device includes: A first temperature detection device is installed inside the first compartment and is used to detect the ambient temperature of the first compartment. A second temperature detection device and a humidity detection device are installed in the second compartment. The second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and ambient humidity of the second compartment. The temperature of the drive board is obtained by a second detection device, which is located on the drive board of the electrical control box. When the temperature of the drive plate is determined to be greater than or equal to a first preset temperature threshold, the opening degree of the air valve set at the opening is controlled according to the environmental parameters, wherein the air valve is connected to the evaporation chamber.

7. The temperature control method according to claim 6, characterized in that, The control of the opening degree of the air valve installed at the opening based on the environmental parameters includes: Determine the sum of the dew point temperature of the second compartment and the first preset value; When the ambient temperature of the first compartment is less than the sum value, the opening degree of the air valve provided at the opening is reduced by the first preset value. When the ambient temperature of the first compartment is greater than or equal to the sum value, the opening degree of the air valve installed at the opening is controlled to remain unchanged or increase.

8. The temperature control method according to claim 6, characterized in that, The control of the opening degree of the air valve installed at the opening based on the environmental parameters includes: Determine the difference between the dew point temperature of the second compartment and the second preset value; When the ambient temperature of the first compartment is greater than the difference, the opening of the air valve at the opening is increased by the second preset value. When the ambient temperature of the first compartment is less than or equal to the difference, the opening degree of the air valve installed at the opening is controlled to remain unchanged or decrease.

9. The temperature control method according to claim 6, characterized in that, The temperature control method further includes: The step of obtaining the environmental parameters is repeated at preset intervals to obtain updated environmental parameters; The opening degree of the air valve set at the opening is controlled according to the updated environmental parameters.

10. The temperature control method according to any one of claims 6-9, characterized in that, The temperature control method further includes: If the temperature of the drive plate is determined to be less than or equal to a second preset temperature threshold, the air valve at the opening is controlled to close.

11. A control device for an electrical control box, characterized in that, The control device includes: An acquisition module is used to acquire environmental parameters detected by a first detection device. The first detection device is disposed inside the electrical control box. The box has openings and at least one vent spaced apart. The openings allow high-temperature air inside the box to flow out to the evaporator chamber of an air conditioning unit, or allow low-temperature gas in the evaporator chamber to enter the box. The vents allow air from outside the box to enter the box. Electrical components capable of generating heat are disposed inside the box. The electrical control box has a first compartment and a second compartment, which are connected. The electrical components are disposed in the second compartment. The openings and at least one vent are disposed on the outer wall of the first compartment. The environmental parameters include the ambient temperature of the first compartment and the dew point temperature of the second compartment, and the first detection device includes: A first temperature detection device is installed inside the first compartment and is used to detect the ambient temperature of the first compartment. A second temperature detection device and a humidity detection device are installed in the second compartment. The second temperature detection device is used to detect the ambient temperature of the second compartment, and the humidity detection device is used to detect the ambient humidity of the second compartment. The dew point temperature of the second compartment is obtained based on the ambient temperature and ambient humidity of the second compartment. The control module acquires the temperature of the drive board detected by the second detection device, which is located on the drive board of the electrical control box. When the temperature of the drive plate is determined to be greater than or equal to a first preset temperature threshold, the opening degree of the air valve set at the opening is controlled according to the environmental parameters, wherein the air valve is connected to the evaporation chamber.

12. An air conditioning device, characterized in that, It includes a processor and a memory, the processor being used to execute a control program for an electrical control box stored in the memory to implement the steps of the temperature control method for an electrical control box according to any one of claims 6 to 10.

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