Control method of parking air conditioner and parking air conditioner

Abstract

The present application belongs to the technical field of temperature regulation, and particularly relates to a control method of a parking air conditioner and the parking air conditioner. The control method comprises: controlling a compressor to operate at a target frequency for a first set time length; acquiring an indoor environment temperature; judging whether the indoor environment temperature reaches a set temperature; in the case that the indoor environment temperature does not reach the set temperature, acquiring an outdoor unit electrical box temperature; and adjusting the operating frequency of the compressor according to the outdoor unit electrical box temperature. The present application can precisely regulate and control the operating frequency of the compressor, and cancels the exhaust temperature sensing bag and the external environment temperature sensing bag, thereby simplifying the wiring of the outdoor unit, reducing the space occupied by the outdoor unit, and lowering the production cost of the outdoor unit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature regulation, and particularly relates to a control method of a parking air conditioner and the parking air conditioner. BACKGROUND

[0002] With the rapid development of the logistics industry, in order to save transportation costs, truck drivers usually take the car as home, which also makes the truck drivers have higher demand for the environment in the car, and the truck drivers usually install a parking air conditioner on the car. In order to realize accurate control of the running frequency of the parking air conditioner, and ensure the reliability of the parking air conditioner under the premise of realizing the refrigeration and energy saving of the parking air conditioner, the existing technology usually obtains the corresponding temperature point based on the external environment temperature sensing bag and the exhaust temperature sensing bag arranged on the air conditioner outdoor unit, so as to accurately control the running frequency of the parking air conditioner according to the obtained corresponding temperature point. However, arranging the external environment temperature sensing bag and the exhaust temperature sensing bag on the air conditioner outdoor unit will result in complex wiring of the air conditioner outdoor unit, which occupies more space and is not conducive to the miniaturization design of the air conditioner outdoor unit, and also increases the manufacturing cost of the air conditioner outdoor unit. SUMMARY

[0003] In order to overcome the problems in the related art, the present application provides a control method of a parking air conditioner and the parking air conditioner.

[0004] The first aspect of the present application provides a control method of a parking air conditioner, the control method comprising:

[0005] controlling the compressor to run at a target frequency for a first set time length;

[0006] obtaining an indoor environment temperature;

[0007] determining whether the indoor environment temperature reaches a set temperature;

[0008] in the case that the indoor environment temperature does not reach the set temperature, obtaining an outdoor unit electrical box temperature;

[0009] adjusting the running frequency of the compressor according to the outdoor unit electrical box temperature.

[0010] In some embodiments, the adjusting the running frequency of the compressor according to the outdoor unit electrical box temperature comprises:

[0011] determining a critical value of a reference temperature interval of the outdoor unit electrical box temperature according to the target frequency of the compressor;

[0012] adjusting the running frequency of the compressor according to the reference temperature interval in which the outdoor unit electrical box temperature is located.

[0013] In some embodiments, adjusting the operating frequency of the compressor according to the reference temperature interval in which the temperature of the outdoor electrical box falls comprises:

[0014] When the target frequency of the compressor is a first frequency, determining the critical values of the reference temperature interval comprises an outdoor electrical box protection temperature minimum value, an outdoor electrical box protection frequency-forbidden temperature, and an outdoor electrical box protection shutdown temperature;

[0015] When the temperature of the outdoor electrical box satisfies T≤T1 or T2≤T

[0016] When the temperature of the outdoor electrical box satisfies T≥T4, the compressor is controlled to be shut down;

[0017] Wherein: T is the temperature of the outdoor electrical box, T1 is the outdoor electrical box protection temperature minimum value, T2 is the outdoor electrical box protection frequency-forbidden temperature, and T4 is the outdoor electrical box protection shutdown temperature.

[0018] In some embodiments, adjusting the operating frequency of the compressor according to the reference temperature interval in which the temperature of the outdoor electrical box falls further comprises:

[0019] When the target frequency of the compressor is greater than the first frequency, determining the critical values of the reference temperature interval comprises an outdoor electrical box protection temperature minimum value, an outdoor electrical box protection frequency-forbidden temperature, an outdoor electrical box protection frequency-reduction temperature, and an outdoor electrical box protection shutdown temperature;

[0020] When the temperature of the outdoor electrical box satisfies T≤T1, the compressor is controlled to be operated at the target frequency;

[0021] When the temperature of the outdoor electrical box satisfies T2≤T

[0022] When the temperature of the outdoor electrical box satisfies T3≤T

[0023] When the temperature of the outdoor electrical box satisfies T≥T4, the compressor is controlled to be shut down;

[0024] Wherein: T is the temperature of the outdoor electrical box, T1 is the outdoor electrical box protection temperature minimum value, T2 is the outdoor electrical box protection frequency-forbidden temperature, T3 is the outdoor electrical box protection frequency-reduction temperature, and T4 is the outdoor electrical box protection shutdown temperature.

[0025] In some embodiments, adjusting the operating frequency of the compressor according to the temperature of the outdoor electrical box comprises:

[0026] obtaining an initial temperature of the outdoor electrical box;

[0027] determining a temperature difference of the outdoor electrical box, ΔT, according to the temperature of the outdoor electrical box and the initial temperature 外机电器盒 = T - T0;

[0028] adjusting a running frequency of the compressor according to the temperature difference;

[0029] wherein: ΔT 外机电器盒 is the temperature difference, T is the temperature of the outdoor electrical box, and T0 is the initial temperature;

[0030] wherein the initial temperature is a temperature of the outdoor electrical box when the compressor runs at an initial frequency for a second set duration, and the initial frequency is less than the target frequency.

[0031] In some embodiments, the adjusting the running frequency of the compressor according to the temperature difference comprises:

[0032] determining a critical value of a reference temperature difference interval of the temperature difference according to a target frequency of the compressor;

[0033] adjusting the running frequency of the compressor according to a reference temperature difference interval in which the temperature difference is located.

[0034] In some embodiments, the adjusting the running frequency of the compressor according to a reference temperature difference interval in which the temperature difference is located comprises:

[0035] when the target frequency of the compressor is a first frequency, determining that the critical value of the reference temperature difference interval is a first critical temperature difference;

[0036] when the temperature difference satisfies: ΔT 外机电器盒 < ΔT1, controlling the compressor to run at the target frequency;

[0037] when the temperature difference satisfies: ΔT 外机电器盒 ≥ ΔT1, controlling the compressor to stop running;

[0038] wherein: ΔT1 is the first critical temperature difference.

[0039] In some embodiments, the adjusting the running frequency of the compressor according to a reference temperature difference interval in which the temperature difference is located comprises:

[0040] when the target frequency of the compressor is greater than the first frequency, determining that the critical value of the reference temperature difference interval is a first critical temperature difference and a second critical temperature difference;

[0041] when the temperature difference satisfies: ΔT 外机电器盒 < ΔT2, controlling the compressor to run at the target frequency;

[0042] In the case that the temperature difference satisfies: ΔT2 < ΔT 外机电器盒 < ΔT1, the compressor is controlled to reduce the operating frequency;

[0043] In the case that the temperature difference satisfies: ΔT 外机电器盒 > ΔT1, the compressor is controlled to stop;

[0044] Wherein: ΔT1 is the first critical temperature difference, ΔT2 is the second critical temperature difference, ΔT1 > ΔT2.

[0045] In some embodiments, before the control method controls the compressor to operate at a target frequency for a first set duration, the control method comprises:

[0046] Controlling the compressor to operate at an initial frequency for a second set duration;

[0047] Obtaining the indoor ambient temperature;

[0048] Calculating the difference between the indoor ambient temperature and the set temperature, the compensation temperature, the difference satisfying: ΔT = T 内环 - T 设 - T 补偿 ;

[0049] Determining the target frequency of the compressor according to the difference;

[0050] Wherein: ΔT is the difference, T 内环 is the indoor ambient temperature, T 补偿 is the compensation temperature, T 设 is the set temperature.

[0051] In some embodiments, the determining the target frequency of the compressor according to the difference comprises:

[0052] In the case that the difference is in a target difference interval, determining the target frequency of the compressor as a second frequency;

[0053] In the case that the difference is lower than the minimum value of the target difference interval, determining the target frequency of the compressor as a first frequency;

[0054] In the case that the difference is higher than the maximum value of the target difference interval, determining the target frequency of the compressor as a third frequency;

[0055] Wherein, the initial frequency < the first frequency < the second frequency < the third frequency.

[0056] The second aspect of the present application provides a control device, comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions, when the one or more processors execute the program instructions, the one or more processors are configured to implement the control method of the first aspect of the present application

[0057] The third aspect of the present application provides a parking air conditioner, which is operated by the control method of the first aspect of the present application, or comprises the control device of the second aspect of the present application.

[0058] The technical solution of the present application can have the following beneficial effects: the present application can accurately regulate the operating frequency of the compressor based on the indoor environment temperature of the cab, the set temperature and the temperature of the external machine electrical box, thereby protecting the mainboard of the parking air conditioner and ensuring the reliability of the operation of the parking air conditioner. In addition, the present application cancels the exhaust temperature sensing bag and the external environment temperature sensing bag, simplifies the wiring of the outdoor unit, reduces the space occupied by the outdoor unit, and reduces the production cost of the outdoor unit.

[0059] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0060] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0061] Figure 1 is a control flow of a parking air conditioner according to an exemplary embodiment Figure 1 .

[0062] Figure 2 is a control flow of a parking air conditioner according to an exemplary embodiment Figure 2 .

[0063] Figure 3 is a control flow of a parking air conditioner according to an exemplary embodiment Figure 3 .

[0064] Figure 4 is a control flow of a parking air conditioner according to an exemplary embodiment Figure 4 .

[0065] Figure 5 is a control flow of a parking air conditioner according to an exemplary embodiment Figure 5 . DETAILED DESCRIPTION

[0066] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals designate identical or similar elements in the several views. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present application. Rather, it is merely an example of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0067] Figure 1 Control flow of the stationary air conditioner according to an exemplary embodiment of the present application Figure 1 Figure 1 The present embodiment proposes a control method of a stationary air conditioner, the control method comprising the following steps:

[0068] S11, controlling the compressor to operate at a target frequency for a first set time length.

[0069] In the present embodiment, the target frequency can be a frequency determined by a user, or a frequency determined by acquiring parameters such as indoor temperature and set temperature. After the compressor is started, the operating frequency of the compressor will gradually rise to the target frequency, and the first set time length is for example 10-20 minutes.

[0070] S12, acquiring the indoor environment temperature and the set temperature.

[0071] In the present embodiment, a first temperature sensor is arranged on the indoor unit of the stationary air conditioner, and the indoor unit is arranged in the cab. The first temperature sensor is used to detect the temperature in the cab. The indoor environment temperature can be the real-time temperature detected by the first temperature sensor, or the average value of multiple temperature values detected by the first temperature sensor at a set interval. The set temperature is a temperature set by the user in advance, and the set temperature can be adjusted according to the user's needs.

[0072] S13, determining whether the indoor environment temperature reaches the set temperature.

[0073] In the present embodiment, after the indoor environment temperature and the set temperature are acquired, the difference between the indoor environment temperature and the set temperature is calculated. When the difference is within a set difference range, it is determined that the indoor environment temperature reaches the set temperature. When the difference is less than the minimum value of the set difference range, or the difference is greater than the maximum value of the set difference range, it is determined that the indoor environment temperature does not reach the set temperature. The range of the set temperature difference is for example -0.5℃-0.5℃.

[0074] S14, acquiring the temperature of the outdoor unit electrical box when the indoor environment temperature does not reach the set temperature.

[0075] ​In the embodiment, when the indoor environment temperature reaches the set temperature, a large amount of cold energy is not needed to maintain the comfort of the indoor temperature, and the compressor can be controlled to stop. When the indoor environment temperature does not reach the set temperature, it indicates that cold energy is still needed to make the indoor environment temperature reach the set temperature, and the temperature of the outdoor unit electrical box needs to be obtained. The outdoor unit electrical box is located in the outdoor unit of the air conditioner, and the main board device is arranged in the outdoor unit electrical box. The temperature of the outdoor unit electrical box is the temperature of the main board device. The outdoor unit is provided with a second temperature sensor for detecting the temperature of the main board device in the outdoor unit electrical box. The second temperature sensor is originally provided on the outdoor unit electrical box, and is used to monitor the temperature of the main board device in the outdoor unit electrical box to avoid that the temperature of the main board device is too high to affect the reliable operation of the system. The temperature of the outdoor unit electrical box can be the temperature detected by the second temperature sensor in real time, or can be an average value of multiple temperatures detected by the second temperature sensor at a preset interval.

[0076] S15, adjusting the operating frequency of the compressor according to the temperature of the outdoor unit electrical box.

[0077] In the embodiment, the temperature of the outdoor unit electrical box can be obtained, and the frequency of the compressor can be adjusted according to the temperature of the outdoor unit electrical box. The second temperature sensor is used to detect the temperature of the outdoor unit electrical box, and the exhaust temperature sensor for detecting the exhaust temperature of the compressor and the environment temperature sensor for detecting the outdoor environment temperature do not need to be additionally arranged on the outdoor unit, so that the wiring of the outdoor unit can be simplified, the space occupied by the outdoor unit can be reduced, and the production cost of the outdoor unit is reduced.

[0078] Figure 2 The control flow of the parking air conditioner according to an example embodiment of the present application is shown Figure 2 , referring to Figure 2 , the step of adjusting the operating frequency of the compressor according to the temperature of the outdoor unit electrical box includes the following steps:

[0079] S21, determining the critical value of the reference temperature interval of the temperature of the outdoor unit electrical box according to the target frequency of the compressor.

[0080] In the embodiment, the critical value of the reference temperature interval of the temperature of the outdoor unit electrical box corresponding to different target frequencies of the compressor is different. For example, when the target frequency of the compressor is a first frequency, the critical value of the reference temperature interval includes the minimum value of the protection temperature of the outdoor unit electrical box, the protection frequency-prohibited temperature of the outdoor unit electrical box, and the protection stop temperature of the outdoor unit electrical box. When the target frequency of the compressor is greater than the first frequency, the critical value of the reference temperature interval includes the minimum value of the protection temperature of the outdoor unit electrical box, the protection frequency-prohibited temperature of the outdoor unit electrical box, the protection frequency-reducing temperature of the outdoor unit electrical box, and the protection stop temperature of the outdoor unit electrical box.

[0081] The outdoor electrical box protection temperature minimum value is a critical value allowing the compressor to maintain the current target frequency operation. When the outdoor electrical box temperature is less than the outdoor electrical box protection temperature minimum value, the compressor operates at the current target frequency. The outdoor electrical box protection temperature minimum value ranges from 0 to 80°C, for example, 70°C. The outdoor electrical box protection frequency inhibition temperature is a critical value prohibiting the compressor from operating at a higher frequency. When the outdoor electrical box temperature is greater than the outdoor electrical box protection frequency inhibition temperature, the compressor is prohibited from operating at a higher frequency. The outdoor electrical box protection frequency inhibition temperature ranges from 0 to 80°C, for example, 72°C. The outdoor electrical box protection frequency reduction temperature is a critical value requiring the compressor to operate at a lower frequency. When the outdoor electrical box temperature is greater than the outdoor electrical box protection frequency reduction temperature, the compressor must operate at a lower frequency. The outdoor electrical box protection frequency reduction temperature ranges from 0 to 80°C, for example, 72°C. The outdoor electrical box protection shutdown temperature is a critical value requiring the compressor to shut down. When the outdoor electrical box temperature is greater than the outdoor electrical box protection shutdown temperature, the compressor is required to shut down to protect the compressor from being damaged. The outdoor electrical box protection shutdown temperature ranges from 0 to 80°C, for example, 75°C.

[0082] wherein T1 is the outdoor electrical box protection temperature minimum value, T2 is the outdoor electrical box protection frequency inhibition temperature, T3 is the outdoor electrical box protection frequency reduction temperature, and T4 is the outdoor electrical box protection shutdown temperature, and T1 < outdoor electrical box protection frequency inhibition temperature < T2 < T3 < T4.

[0083] S22, adjusting the operating frequency of the compressor according to the reference temperature interval in which the outdoor electrical box temperature is located.

[0084] In this embodiment, after determining the critical values of the reference temperature interval, the operating frequency of the compressor can be adjusted according to the temperature interval in which the outdoor electrical box temperature is located. Different temperature intervals correspond to different compressor control strategies.

[0085] In an example, when the target frequency of the compressor is a first frequency, the critical values of the reference temperature interval include the outdoor electrical box protection temperature minimum value, the outdoor electrical box protection frequency inhibition temperature, and the outdoor electrical box protection shutdown temperature. When the outdoor electrical box temperature T satisfies T ≤ T1 or T2 ≤ T < T4, the temperature of the mainboard component is not high and is still within the normal operating range. The compressor can still meet the indoor cooling demand at the original operating frequency. At this time, the compressor is controlled to maintain the target frequency until the indoor environment temperature reaches the set temperature, at which time the compressor is controlled to shut down. When the outdoor electrical box temperature satisfies T ≥ T4, the temperature of the mainboard component is already very high and exceeds the upper limit of the protection temperature. At this time, the compressor is controlled to shut down to ensure that the mainboard component is not damaged by high temperature and to ensure system reliability.

[0086] In an example, when the target frequency of the compressor is greater than the first frequency, the critical value of the reference temperature interval comprises the minimum value of the outdoor unit electrical box protection temperature, the outdoor unit electrical box protection temperature, the outdoor unit electrical box protection temperature, and the outdoor unit electrical box protection stop temperature. When the outdoor unit electrical box temperature T satisfies: T≤T1, the temperature of the main board component is in the minimum value interval, at this time, the indoor cooling demand can be met, and the temperature of the main board component will not be too high even if the frequency is greater than the first frequency. At this time, the compressor is controlled to operate at the target frequency until the indoor environment temperature reaches the set temperature, and the compressor is stopped. When the outdoor unit electrical box temperature satisfies: T2≤T

[0087] Figure 3 The control flow of the parking air conditioner according to an example of the present application is shown. Figure 3 , with reference to Figure 4 , the step of adjusting the operating frequency of the compressor according to the outdoor unit electrical box temperature comprises the following steps:

[0088] S31, obtaining the initial temperature of the outdoor unit electrical box.

[0089] In this embodiment, when the air conditioner receives an instruction to start running, the compressor starts to operate at an initial frequency lower than the target frequency for a second set time to transition. The second set time is in the range of 0-10 minutes. The initial temperature of the outdoor unit electrical box is the temperature of the outdoor unit electrical box when the compressor operates at the initial frequency for the second set time, and the initial frequency is lower than the target frequency.

[0090] S32, determining the temperature difference of the outdoor unit electrical box according to the outdoor unit electrical box temperature and the initial temperature, ΔT 外机电器盒 =T-T0.

[0091] In this embodiment, after obtaining the initial temperature of the outdoor unit electrical box when the compressor operates at the initial frequency for the second set time, and obtaining the temperature of the outdoor unit electrical box when the compressor operates at the target frequency for the first set time, the temperature difference ΔT 外机电器盒 =T-T0, wherein: ΔT外机电器盒 is the temperature difference, T is the temperature of the outdoor electrical box, and T0 is the initial temperature. After determining the temperature difference, the operating frequency of the compressor can be adjusted according to the temperature difference.

[0092] S33, adjusting the operating frequency of the compressor according to the temperature difference.

[0093] In this embodiment, different reference temperature difference intervals are stored in the control device of the air conditioner, and each reference temperature difference interval has a corresponding compressor regulation strategy. The operating frequency of the compressor is adjusted by determining the reference temperature difference interval in which the temperature difference is located.

[0094] Referring to Figure 5 The step of adjusting the operating frequency of the compressor according to the temperature difference includes the following steps:

[0095] S41, determining the critical value of the reference temperature difference interval of the temperature difference according to the target frequency of the compressor.

[0096] In this embodiment, the critical value of the reference temperature difference interval of the temperature difference corresponding to different target frequencies of the compressor is different. For example, when the target frequency of the compressor is a first frequency, the critical value of the reference temperature difference interval is a first temperature difference. When the target frequency of the compressor is greater than the first frequency, the critical value of the reference temperature difference interval is a first temperature difference and a second temperature difference, wherein ΔT1 is the first critical temperature difference, ΔT1 is the upper limit of the temperature rise of the main board component module, ΔT2 is the second critical temperature difference, ΔT2 is the lower limit of the temperature rise, and ΔT1 > ΔT2.

[0097] S42, adjusting the operating frequency of the compressor according to the reference temperature difference interval in which the temperature difference of the outdoor electrical box is located.

[0098] In this embodiment, after determining the critical value of the reference temperature difference interval, the operating frequency of the compressor can be adjusted according to the reference temperature difference interval in which the temperature difference of the outdoor electrical box is located. Different temperature intervals correspond to different compressor regulation strategies.

[0099] In one example, when the target frequency of the compressor is a first frequency, the critical value of the reference temperature difference interval is a first temperature difference. When the temperature difference of the outdoor electrical box satisfies ΔT 外机电器盒 < ΔT1, the temperature rise of the main board component is less than the upper limit of the temperature rise, and the compressor is controlled to operate at the target frequency. When the temperature difference of the outdoor electrical box satisfies ΔT 外机电器盒 ≥ ΔT1, the temperature rise of the main board component has exceeded the upper limit of the temperature rise of the main board component protection, and the compressor is controlled to stop to ensure that the main board component will not be damaged.

[0100] In an example, when the target frequency of the compressor is greater than the first frequency, the critical value of the reference temperature difference interval is determined as the first temperature difference and the second temperature difference. When the temperature difference satisfies: ΔTout < ΔT2, at this time, the temperature rise value of the mainboard components is less than the lower limit value of the temperature rise, the compressor is controlled to keep running at the target frequency to meet the indoor cooling demand.

[0101] When the temperature difference satisfies: ΔT2 < ΔTout < ΔT1, at this time, the temperature rise value of the mainboard components is between the lower limit value and the upper limit value of the temperature rise, if the original target frequency continues to run, the temperature rise value continues to rise and may exceed the upper limit value of the temperature rise, in order to protect the reliability of the mainboard protection system, the compressor is controlled to reduce the running frequency until the indoor environment temperature reaches the set temperature to control the compressor to stop. When the temperature difference satisfies: ΔTout > ΔT1, at this time, the temperature rise of the mainboard components has exceeded the upper limit value of the temperature rise of the main components, at this time, the compressor needs to be controlled to stop to ensure that the mainboard will not be burned out.

[0102] Figure 5 is a control flow of the parking air conditioner according to an example embodiment of the present application Figure 5 , referring to ​ , before the compressor is controlled to run at the target frequency for the first set time length, the control method further includes the following steps:

[0103] S51, controlling the compressor to run at an initial frequency for a second set time length;

[0104] S52, acquiring the indoor environment temperature;

[0105] S53, determining the difference between the indoor environment temperature and the set temperature and the compensation temperature;

[0106] S54, determining the target frequency of the compressor according to the difference.

[0107] In this embodiment, after the parking air conditioner is started, the compressor first runs at an initial frequency for a second set time length, and then the indoor environment temperature is detected. After the indoor environment temperature is determined, the difference between the indoor environment temperature and the set temperature and the compensation temperature can be determined, and the difference satisfies: ΔT = T 内环 -T 设 -T 补偿 , wherein: ΔT is the difference, T 内环 is the indoor environment temperature, T 补偿 is the compensation temperature, and T 设 is the set temperature. The set temperature is a temperature set by the user in advance, the compensation temperature is a correction value of the detected value of the indoor environment temperature and the actual temperature value, the compensation temperature is a constant value, and the range of the compensation temperature is, for example, -2-2℃. Finally, the target frequency of the compressor is determined according to the difference.

[0108] In an example, after the difference is calculated, the difference is compared with the critical value of the target difference interval, and the target frequency of the compressor is determined according to the comparison result. For example, the target frequency of the compressor includes a first frequency, a second frequency and a third frequency, wherein: the initial frequency < the first frequency < the second frequency < the third frequency. In the case that the difference is located in the target difference interval, the actual temperature of the indoor environment and the difference between the set temperature are in the middle value region, and the target frequency of the compressor is determined as the second frequency, at this time, the compressor runs at the second frequency to meet the cooling demand of the indoor environment, and does not need to run at a high frequency, which wastes energy. In the case that the difference is lower than the minimum value of the target difference interval, the difference between the actual temperature of the indoor environment and the set temperature is small, at this time, a large amount of cooling is not needed to maintain the comfort of the indoor environment, and the target frequency of the compressor is determined as the first frequency. In the case that the difference is higher than the maximum value of the target difference interval, the difference between the actual temperature of the indoor environment and the set temperature is already large, at this time, the demand for cooling of the indoor environment is very large, and the compressor running at the first frequency and the second frequency cannot meet the cooling demand, and the target frequency of the compressor is determined as the third frequency.

[0109] According to an example embodiment, the present embodiment further provides a control device, comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions, when the one or more processors execute the program instructions, the one or more processors are configured to implement the control method according to the first aspect of the present application

[0110] According to an example embodiment, the present embodiment provides a parking air conditioner, the parking air conditioner is operated by using the control method according to the first aspect of the present application, or comprises the control device according to the second aspect of the present application.

[0111] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the present disclosure be considered as exemplary and not limiting and that the true scope of the application is indicated by the following claims. The specification and examples given are considered exemplary and not limiting.

[0112] It should be understood that the application is not limited to the precise construction and method described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the claims that follow.

Claims

1. A method for controlling a parking air conditioner, characterized in that, The control method includes: Control the compressor to run at the target frequency for a first set duration; Obtain indoor ambient temperature; Determine whether the indoor ambient temperature has reached the set temperature; When the indoor ambient temperature does not reach the set temperature, the temperature of the outdoor unit's electrical box is obtained; The operating frequency of the compressor is adjusted according to the temperature of the outdoor unit's electrical box; The step of adjusting the compressor's operating frequency based on the temperature of the outdoor unit's electrical box includes: The critical value of the reference temperature range for the temperature of the outdoor unit's electrical box is determined based on the target frequency of the compressor; The operating frequency of the compressor is adjusted according to the reference temperature range of the outdoor unit's electrical box. Before controlling the compressor to operate at a target frequency for a first set duration, the compressor is controlled to operate at an initial frequency for a second set duration; the target frequency of the compressor includes a first frequency, a second frequency, and a third frequency, wherein: initial frequency < first frequency < second frequency < third frequency; adjusting the operating frequency of the compressor according to the reference temperature range of the outdoor unit's electrical box temperature includes: When the target frequency of the compressor is greater than the first frequency, the critical values ​​of the reference temperature range are determined to include the minimum protection temperature of the outdoor unit electrical box, the frequency restriction temperature of the outdoor unit electrical box, the frequency reduction temperature of the outdoor unit electrical box, and the shutdown temperature of the outdoor unit electrical box. When the temperature of the outdoor unit electrical box meets the condition that T≤T1, the compressor is controlled to maintain the target frequency; when the temperature of the outdoor unit electrical box meets the condition that T2≤T<T3, the compressor is controlled to maintain the target frequency; when the temperature of the outdoor unit electrical box meets the condition that T3≤T<T4, the compressor is controlled to reduce the operating frequency; when the temperature of the outdoor unit electrical box meets the condition that T≥T4, the compressor is controlled to stop. Wherein: T is the temperature of the outdoor unit electrical box, T1 is the minimum protection temperature of the outdoor unit electrical box, T2 is the protection frequency restriction temperature of the outdoor unit electrical box, T3 is the protection frequency reduction temperature of the outdoor unit electrical box, and T4 is the protection shutdown temperature of the outdoor unit electrical box.

2. The control method according to claim 1, characterized in that, Adjusting the compressor's operating frequency based on the reference temperature range of the outdoor unit's electrical box temperature also includes: When the target frequency of the compressor is the first frequency, the critical values ​​of the reference temperature range are determined to include the minimum protection temperature of the outdoor unit electrical box, the frequency restriction temperature of the outdoor unit electrical box, and the shutdown temperature of the outdoor unit electrical box. When the temperature of the outdoor unit's electrical box meets the following conditions: T≤T1, or T2≤T<T4, the compressor is controlled to maintain the target frequency. When the temperature of the outdoor unit's electrical box meets the condition that T≥T4, the compressor is controlled to stop. Wherein: T is the temperature of the outdoor unit electrical box, T1 is the minimum protection temperature of the outdoor unit electrical box, T2 is the frequency restriction temperature of the outdoor unit electrical box, and T4 is the shutdown temperature of the outdoor unit electrical box.

3. A method for controlling a parking air conditioner, characterized in that, The control method includes: Control the compressor to run at the target frequency for a first set duration; Obtain indoor ambient temperature; Determine whether the indoor ambient temperature has reached the set temperature; When the indoor ambient temperature does not reach the set temperature, the temperature of the outdoor unit's electrical box is obtained; The operating frequency of the compressor is adjusted according to the temperature of the outdoor unit's electrical box; The step of adjusting the compressor's operating frequency based on the temperature of the outdoor unit's electrical box includes: Obtain the initial temperature of the outdoor unit's electrical box; The temperature difference of the outdoor unit electrical box is determined based on the temperature of the outdoor unit electrical box and the initial temperature. T 外机电器盒 =T-T0; The operating frequency of the compressor is adjusted according to the temperature difference; in: T 外机电器盒 The temperature difference is T, the temperature of the outdoor unit electrical box is T0, and the initial temperature is the temperature of the outdoor unit electrical box when the compressor runs at an initial frequency for a second set time, and the initial frequency is less than the target frequency. The step of adjusting the operating frequency of the compressor according to the temperature difference includes: The critical value of the reference temperature difference range is determined based on the target frequency of the compressor; The operating frequency of the compressor is adjusted according to the reference temperature difference range in which the temperature difference is located; Before controlling the compressor to operate at a target frequency for a first set duration, the compressor is controlled to operate at an initial frequency for a second set duration; the target frequency of the compressor includes a first frequency, a second frequency, and a third frequency, wherein: initial frequency < first frequency < second frequency < third frequency; adjusting the operating frequency of the compressor according to the reference temperature difference range in which the temperature difference is located includes: When the target frequency of the compressor is greater than the first frequency, the critical values ​​of the reference temperature difference range are determined to be a first critical temperature difference and a second critical temperature difference; when the temperature difference satisfies: T 外机电器盒 < Under temperature T2, the compressor is controlled to maintain operation at the target frequency; when the temperature difference satisfies: T2 < T 外机电器盒 < Under temperature condition T1, the compressor is controlled to reduce its operating frequency; when the temperature difference satisfies: T 外机电器盒 > In case T1, control the compressor to stop; in: T1 is the first critical temperature difference. T2 is the second critical temperature difference. T1> T2.

4. The control method according to claim 3, characterized in that, The step of adjusting the operating frequency of the compressor based on the reference temperature difference range in which the temperature difference is located further includes: When the target frequency of the compressor is a first frequency, the critical value of the reference temperature difference range is determined to be a first critical temperature difference. The temperature difference satisfies: T 外机电器盒 < In case T1, control the compressor to maintain the target frequency; The temperature difference satisfies: T 外机电器盒 ≥ In case T1, control the compressor to stop; in: T1 is the first critical temperature difference.

5. The control method according to claim 1 or 3, characterized in that, The control method includes: After controlling the compressor to run at an initial frequency for a second set time, the indoor ambient temperature is obtained; Determine the difference between the indoor ambient temperature and the set temperature and the compensated temperature. The difference must satisfy the following: T=T 内环 -T 设 -T 补偿 ; The target frequency of the compressor is determined based on the difference. in: T is the difference, T 内环 T represents the indoor ambient temperature. 补偿 The compensation temperature is the correction value between the detected value and the actual value of the indoor ambient temperature, T. 设 The set temperature.

6. The control method according to claim 5, characterized in that, Determining the target frequency of the compressor based on the difference includes: If the difference is within the target difference range, the target frequency of the compressor is determined to be the second frequency; If the difference is lower than the minimum value of the target difference range, the target frequency of the compressor is determined to be the first frequency; If the difference is higher than the maximum value of the target difference range, the target frequency of the compressor is determined to be the third frequency.

7. A control device, characterized in that, It includes one or more processors and a non-transitory computer-readable storage medium storing program instructions, wherein when the one or more processors execute the program instructions, the one or more processors are used to implement the control method according to any one of claims 1-6.

8. A parking air conditioner, characterized in that, The parking air conditioner operates using the control method described in any one of claims 1-6, or includes the control device described in claim 7.

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