Method and apparatus for controlling a refrigeration appliance, refrigeration appliance, storage medium

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a method for controlling refrigeration equipment, which comprises the following steps: acquiring an outdoor environment temperature and a starting duration of a compressor; and controlling a refrigeration fan according to the starting duration of the compressor when the outdoor environment temperature is less than or equal to a preset low-temperature limit. In this way, the rotating speed of the refrigeration fan can be controlled according to the starting duration of the compressor in a low-temperature environment. The heat released by the refrigerant passing through the condenser can be controlled by using the refrigeration fan with different rotating speeds for different starting durations of the compressor. The refrigeration equipment can improve the refrigerant temperature and the return gas temperature of the compressor in a low-temperature environment, so that the refrigeration efficiency of the refrigeration equipment in a low-temperature environment can be improved. The application further discloses a device for controlling refrigeration equipment, refrigeration equipment and a storage medium.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, such as a method and apparatus for controlling refrigeration equipment, refrigeration equipment, and storage medium. Background Technology

[0002] Currently, refrigeration equipment is needed when users store frozen items or require a preset temperature of 0 degrees Celsius or lower. However, in low-temperature environments, the return gas temperature of the refrigeration equipment's compressor can drop, preventing the refrigerant from evaporating completely. This results in a large amount of unevaporated refrigerant entering the compressor, requiring higher power to pressurize the refrigerant and thus reducing the refrigeration efficiency of the equipment.

[0003] In the process of implementing the embodiments of this disclosure, it has been found that at least the following problems exist in the related technology: when refrigeration is carried out in a low-temperature environment, the refrigeration efficiency of the refrigeration equipment is reduced due to the decrease in return gas temperature.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a method and apparatus for controlling refrigeration equipment, refrigeration equipment, and storage medium to improve the refrigeration efficiency of refrigeration equipment in low-temperature environments.

[0007] In some embodiments, the method for controlling the refrigeration equipment includes: acquiring the outdoor ambient temperature and the compressor start-up time. When the outdoor ambient temperature is less than or equal to a preset low-temperature threshold, the refrigeration fan is controlled according to the compressor start-up time.

[0008] In some embodiments, controlling the refrigeration fan based on the compressor's start-up time includes: determining a target speed level for the refrigeration fan based on the outdoor ambient temperature when the start-up time is less than or equal to a preset time threshold; and / or, obtaining the exhaust temperature when the start-up time is greater than the preset time threshold; and determining the target speed level for the refrigeration fan based on the exhaust temperature and the outdoor ambient temperature. The refrigeration fan is then controlled according to the target speed level.

[0009] In some embodiments, determining the target speed level of the cooling fan based on the outdoor ambient temperature includes: determining a first temperature range where the outdoor ambient temperature falls from a plurality of preset first alternative temperature ranges; and determining the target speed level of the cooling fan based on the first temperature range.

[0010] In some embodiments, determining the target speed level of the cooling fan based on the first temperature range includes: determining a second temperature range in which the outdoor ambient temperature falls based on the first temperature range and a preset first hysteresis temperature; and determining the target speed level of the cooling fan based on the second temperature range.

[0011] In some embodiments, determining the target speed level of the cooling fan based on the exhaust temperature and the outdoor ambient temperature includes: determining a third temperature range in which the exhaust temperature falls among a plurality of preset second alternative temperature ranges; determining a first temperature range in which the outdoor ambient temperature falls among a plurality of preset first alternative temperature ranges; and determining the target speed level of the cooling fan based on the exhaust temperature, the outdoor ambient temperature, the first temperature range, and the third temperature range.

[0012] In some embodiments, determining the target speed level of the cooling fan based on the exhaust temperature, outdoor ambient temperature, a first temperature range, and a third temperature range includes: determining a second temperature range in which the outdoor ambient temperature falls based on the first temperature range and a preset first hysteresis temperature; determining a fourth temperature range in which the exhaust temperature falls based on the third temperature range and a preset second hysteresis temperature; and determining the target speed level of the cooling fan based on the fourth temperature range and the second temperature range.

[0013] In some embodiments, the refrigeration equipment has multiple refrigeration fans; controlling the refrigeration fans according to a target speed level includes: obtaining the number of fans corresponding to the target speed level; and controlling each refrigeration fan according to the target speed level and the number of fans.

[0014] In some embodiments, the apparatus for controlling a refrigeration device includes a processor and a memory storing program instructions, the processor being configured to execute the method for controlling the refrigeration device described above when the program instructions are executed.

[0015] In some embodiments, the refrigeration device includes a refrigeration device body. The aforementioned means for controlling the refrigeration device is installed on the refrigeration device body.

[0016] In some embodiments, the storage medium stores program instructions that, when executed, perform the method described above for controlling the refrigeration equipment.

[0017] The method and apparatus for controlling refrigeration equipment, refrigeration equipment, and storage medium provided in this disclosure can achieve the following technical effects: By acquiring the outdoor ambient temperature and the compressor start-up time, and then controlling the refrigeration fan according to the compressor start-up time when the outdoor ambient temperature is less than or equal to a preset low temperature threshold. This allows for control of the refrigeration fan speed based on the compressor start-up time in low-temperature environments. It also enables control of the heat released by the refrigerant passing through the condenser using refrigeration fans with different speeds for different compressor start-up times. Compared to using a refrigeration fan with a constant fan speed, controlling the refrigeration fan according to the compressor start-up time when the outdoor ambient temperature is less than or equal to a preset low temperature threshold facilitates increasing the refrigerant temperature and compressor return gas temperature in low-temperature environments. This improves the refrigeration efficiency of the refrigeration equipment in low-temperature environments.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0020] Figure 1 This is a schematic diagram of a method for controlling a command device provided in an embodiment of this disclosure;

[0021] Figure 2 This is a schematic diagram of another method for controlling a command device provided in an embodiment of this disclosure;

[0022] Figure 3 This is a schematic diagram of another method for controlling a command device provided in an embodiment of this disclosure;

[0023] Figure 4 This is a schematic diagram of another method for controlling a command device provided in an embodiment of this disclosure;

[0024] Figure 5 This is a schematic diagram of an apparatus for controlling a command device provided in an embodiment of this disclosure;

[0025] Figure 6 This is a schematic diagram of a refrigeration device provided in an embodiment of this disclosure. Detailed Implementation

[0026] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0027] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0028] Unless otherwise stated, the term "multiple" means two or more.

[0029] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0030] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0031] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0032] In this embodiment of the disclosure, smart home appliances refer to home appliances formed by introducing microprocessors, sensor technology and network communication technology into home appliances. They have the characteristics of intelligent control, intelligent sensing and intelligent application. The operation of smart home appliances often relies on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips. For example, smart home appliances can be connected to electronic devices to enable users to remotely control and manage smart home appliances.

[0033] This disclosure provides a method for controlling a refrigeration device. The refrigeration device acquires the outdoor ambient temperature and the compressor start-up duration. When the outdoor ambient temperature is less than or equal to a preset low-temperature threshold, the refrigeration fan is controlled according to the compressor start-up duration. This allows for control of the refrigeration fan speed based on the compressor start-up duration in low-temperature environments. It enables control of the heat released by the refrigerant passing through the condenser by using refrigeration fans with different speeds for different compressor start-up durations. This facilitates increasing the refrigerant temperature and compressor return gas temperature in low-temperature environments, thereby improving the refrigeration efficiency of the refrigeration device in low-temperature environments.

[0034] The refrigeration equipment includes multiple refrigeration fans. The number of refrigeration fans is greater than or equal to four. These refrigeration fans are located on the condenser side of the refrigeration equipment.

[0035] Combination Figure 1 As shown, this disclosure provides a method for controlling a refrigeration device, including:

[0036] Step S101: The refrigeration equipment obtains the outdoor ambient temperature and the compressor start-up time.

[0037] Step S102: When the outdoor ambient temperature is less than or equal to the preset low temperature limit, the refrigeration equipment controls the refrigeration fan according to the compressor start-up time.

[0038] The method for controlling refrigeration equipment provided in this disclosure acquires the outdoor ambient temperature and the compressor start-up duration. Then, when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold, the refrigeration fan is controlled according to the compressor start-up duration. This allows for control of the refrigeration fan speed based on the compressor start-up duration in low-temperature environments. It also enables control of the heat released by the refrigerant passing through the condenser by using refrigeration fans with different speeds for different compressor start-up durations. Compared to using a refrigeration fan with a constant fan speed, controlling the refrigeration fan based on the compressor start-up duration when the outdoor ambient temperature is less than or equal to the preset low-temperature threshold facilitates increasing the refrigerant temperature and compressor return gas temperature in low-temperature environments. This improves the refrigeration efficiency of the refrigeration equipment in low-temperature environments.

[0039] The compressor start-up time is the duration of operation after the compressor is turned on.

[0040] In some embodiments, the preset low temperature limit is 5 degrees Celsius.

[0041] Furthermore, the refrigeration equipment controls the refrigeration fan based on the compressor's start-up time, including: when the start-up time is less than or equal to a preset time threshold, determining the target speed level of the refrigeration fan based on the outdoor ambient temperature; and / or, when the start-up time exceeds the preset time threshold, acquiring the exhaust temperature. The target speed level of the refrigeration fan is then determined based on the exhaust temperature and the outdoor ambient temperature. The refrigeration fan is controlled according to the target speed level. This allows the target speed level of the refrigeration fan to be obtained based on the outdoor ambient temperature when the compressor's start-up time is less than or equal to the preset time threshold (i.e., when the compressor has just started). When the start-up time exceeds the preset time threshold (i.e., when the compressor has been running for an extended period), the target speed level of the refrigeration fan is determined based on the exhaust temperature and the outdoor ambient temperature. This enables precise control of the refrigeration fan based on the target speed level.

[0042] Since the return gas temperature is primarily related to the outdoor ambient temperature when the compressor has just started, determining the target speed of the refrigeration fan based on the outdoor ambient temperature allows for more precise control of the heat released by the refrigerant passing through the condenser by utilizing refrigeration fans at different speeds. This enables a higher return gas temperature.

[0043] When the compressor runs for an extended period, the return gas temperature is primarily related to the outdoor ambient temperature and the compressor's exhaust temperature. Determining the target speed of the refrigeration fan based on these ambient and exhaust temperatures allows for more precise control of the heat released by the refrigerant passing through the condenser, enabling higher return gas temperature control.

[0044] In some embodiments, the preset duration threshold is 3 minutes.

[0045] Optionally, the refrigeration equipment determines the target speed level of the refrigeration fan based on the outdoor ambient temperature, including: the refrigeration equipment uses a preset first fan level database to perform a lookup operation based on the outdoor ambient temperature to obtain the first speed level corresponding to the outdoor ambient temperature. The preset first fan level database stores the correspondence between outdoor ambient temperature and first speed level. The refrigeration equipment determines this first speed level as the target speed level of the refrigeration fan.

[0046] In some embodiments, a preset first fan rating database is shown in Table 1. Here, Tao represents the outdoor ambient temperature. The unit of this outdoor ambient temperature is degrees Celsius (°C).

[0047] Table 1

[0048] First speed level Level 3 Level 2 Level 1

[0049] In some embodiments, as shown in Table 1, the target speed rating for the cooling fan is level 3 when the outdoor ambient temperature is greater than -10 degrees Celsius and less than or equal to 5 degrees Celsius. When the outdoor ambient temperature is greater than -20 degrees Celsius and less than or equal to -10 degrees Celsius, the target speed rating for the cooling fan is level 2. When the outdoor ambient temperature is greater than -30 degrees Celsius and less than or equal to -20 degrees Celsius, the target speed rating for the cooling fan is level 1.

[0050] Optionally, the refrigeration equipment determines the target speed level of the refrigeration fan based on the outdoor ambient temperature, including: the refrigeration equipment determining a first temperature range where the outdoor ambient temperature falls from a plurality of preset first alternative temperature ranges; and the refrigeration equipment determining the target speed level of the refrigeration fan based on the first temperature range. In this way, the target speed level of the refrigeration fan is obtained based on the first temperature range where the outdoor ambient temperature falls. This allows for control of the refrigeration fan based on the outdoor ambient temperature. Consequently, the return air temperature can be controlled using the refrigeration fan based on the outdoor ambient temperature, thereby improving the return air temperature.

[0051] The multiple preset first alternative temperature ranges include a first reference temperature range, a second reference temperature range, and a third reference temperature range.

[0052] Furthermore, the refrigeration equipment determines a first temperature range for the outdoor ambient temperature from multiple preset first alternative temperature ranges, including: when the outdoor ambient temperature is less than or equal to a preset low temperature threshold and greater than a preset first temperature threshold, the refrigeration equipment determines a first reference temperature range as the first temperature range for the outdoor ambient temperature. And / or, when the outdoor ambient temperature is less than or equal to a preset first temperature threshold and greater than a preset second temperature threshold, the refrigeration equipment determines a second reference temperature range as the first temperature range for the outdoor ambient temperature. And / or, when the outdoor ambient temperature is less than or equal to a preset second temperature threshold and greater than a preset third temperature threshold, the refrigeration equipment determines a third reference temperature range as the first temperature range for the outdoor ambient temperature. Wherein, the preset first temperature threshold is -10 degrees Celsius. The preset second temperature threshold is -20 degrees Celsius. The preset third temperature threshold is -30 degrees Celsius.

[0053] Furthermore, the refrigeration equipment determines the target speed level of the refrigeration fan based on a first temperature range, including: the refrigeration equipment determines a second temperature range in which the outdoor ambient temperature falls based on the first temperature range and a preset first hysteresis temperature. The refrigeration equipment then determines the target speed level of the refrigeration fan based on the second temperature range. Thus, by determining the second temperature range in which the outdoor ambient temperature falls based on the first temperature range and the preset first hysteresis temperature, and then determining the target speed level of the refrigeration fan based on the second temperature range, the fluctuation of the target speed level can be reduced.

[0054] For example, the first hysteresis temperature is 1 degree Celsius.

[0055] Furthermore, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and a preset first hysteresis temperature, including: the refrigeration equipment acquiring a first upper limit temperature and a first lower limit temperature of the first temperature range. When the difference between the outdoor ambient temperature and the first lower limit temperature is less than or equal to the preset first hysteresis temperature, or when the difference between the first upper limit temperature and the outdoor ambient temperature is less than or equal to the preset first hysteresis temperature, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and the first hysteresis temperature.

[0056] The first upper limit temperature of the first temperature range is the upper limit endpoint value of the first temperature range. The first lower limit temperature of the first temperature range is the lower limit endpoint value of the first temperature range.

[0057] In some embodiments, when the first temperature range is a first reference temperature range, the first upper limit temperature of the first temperature range is a preset low temperature limit value, i.e., -5 degrees Celsius. The first lower limit temperature of the first temperature range is a first temperature threshold, i.e., -10 degrees Celsius.

[0058] In some embodiments, when the first temperature range is a second reference temperature range, the first upper limit temperature of the first temperature range is a first temperature threshold, i.e., -10 degrees Celsius. The first lower limit temperature of the first temperature range is a second temperature threshold, i.e., -20 degrees Celsius.

[0059] In some embodiments, when the first temperature range is a third reference temperature range, the first upper limit temperature of the first temperature range is a second temperature threshold, i.e., -20 degrees Celsius. The first lower limit temperature of the first temperature range is a third temperature threshold, i.e., -30 degrees Celsius.

[0060] Furthermore, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and the first hysteresis temperature, including: the refrigeration equipment acquiring multiple historical outdoor ambient temperatures; the refrigeration equipment acquiring a reference historical outdoor ambient temperature from the historical outdoor ambient temperatures in a backward-to-back acquisition sequence; if the reference historical outdoor ambient temperature is within the first temperature range, the refrigeration equipment defining the first temperature range as the second temperature range of the outdoor ambient temperature; and / or, if the reference historical outdoor ambient temperature is not within the first temperature range, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range, the reference historical outdoor ambient temperature, and the first hysteresis temperature.

[0061] Specifically, if the difference between the outdoor ambient temperature and the first lower limit temperature is less than or equal to a preset first hysteresis temperature, then the referenced historical outdoor ambient temperature is less than the difference between the first lower limit temperature and the preset first hysteresis temperature; or, the referenced historical outdoor ambient temperature is greater than the sum of the preset first lower limit temperature and the first hysteresis temperature. Similarly, if the difference between the first upper limit temperature and the outdoor ambient temperature is less than or equal to the preset first hysteresis temperature, then the referenced historical outdoor ambient temperature is greater than or equal to the sum of the first upper limit temperature and the preset first hysteresis temperature; or, the referenced historical outdoor ambient temperature is less than or equal to the difference between the first upper limit temperature and the preset first hysteresis temperature.

[0062] Furthermore, the reference historical outdoor ambient temperature is determined to be within the first temperature range using the following methods: If the difference between the outdoor ambient temperature and the first lower limit temperature is less than or equal to a preset first hysteresis temperature, and the reference historical outdoor ambient temperature is greater than the sum of the preset first lower limit temperature and the first hysteresis temperature, then the reference historical outdoor ambient temperature is determined to be within the first temperature range. And / or, if the difference between the first upper limit temperature and the outdoor ambient temperature is less than or equal to a preset first hysteresis temperature, and the reference historical outdoor ambient temperature is less than or equal to the difference between the first upper limit temperature and the preset first hysteresis temperature, then the reference historical outdoor ambient temperature is determined to be within the first temperature range.

[0063] Optionally, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on a first temperature range, a reference historical outdoor ambient temperature, and a first hysteresis temperature. This includes: when the first temperature range is a first reference temperature range and the reference historical outdoor ambient temperature is less than a first lower limit temperature, the refrigeration equipment determines a preset fourth reference temperature range as the second temperature range of the outdoor ambient temperature. The lower limit of the fourth reference temperature range is the lower limit value of the second reference temperature range. The upper limit of the fourth reference temperature range is the sum of the upper limit value of the second reference temperature range and the first hysteresis temperature.

[0064] Optionally, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on a first temperature range, a reference historical outdoor ambient temperature, and a first hysteresis temperature. This includes: if the first temperature range is the second reference temperature range and the reference historical outdoor ambient temperature is less than a first lower limit temperature, the refrigeration equipment determines a preset fifth reference temperature range as the second temperature range of the outdoor ambient temperature. The lower limit of the fifth reference temperature range is the lower limit of the third reference temperature range. The upper limit of the fifth reference temperature range is the sum of the upper limit of the third reference temperature range and the first hysteresis temperature.

[0065] Optionally, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on a first temperature range, a reference historical outdoor ambient temperature, and a first hysteresis temperature. This includes: if the first temperature range is a third reference temperature range and the reference historical outdoor ambient temperature is greater than or equal to a first upper limit temperature, the refrigeration equipment determines a preset sixth reference temperature range as the second temperature range of the outdoor ambient temperature. The lower limit of the sixth reference temperature range is the difference between the lower limit of the second reference temperature range and the first hysteresis temperature. The upper limit of the sixth reference temperature range is the upper limit of the sixth reference temperature range.

[0066] Optionally, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on a first temperature range, a reference historical outdoor ambient temperature, and a first hysteresis temperature. This includes: when the first temperature range is the second reference temperature range and the reference historical outdoor ambient temperature is greater than or equal to a first upper limit temperature, the refrigeration equipment determines a preset seventh reference temperature range as the second temperature range of the outdoor ambient temperature. The lower limit of the seventh reference temperature range is the difference between the lower limit of the first reference temperature range and the first hysteresis temperature. The upper limit of the seventh reference temperature range is the upper limit of the first reference temperature range.

[0067] Optionally, in the absence of a reference historical outdoor ambient temperature, the refrigeration equipment may determine the first temperature range as the second temperature range.

[0068] Furthermore, the refrigeration equipment determines the target speed level of the refrigeration fan based on the second temperature range, including: the refrigeration equipment determining a fifth temperature range corresponding to the second temperature range. The refrigeration equipment then determines the first speed level corresponding to the fifth temperature range as the target speed level of the refrigeration fan.

[0069] Furthermore, the refrigeration equipment determines the fifth temperature range corresponding to the second temperature range by: when the second temperature range includes all of the first alternative temperature ranges, determining the first alternative temperature range as the fifth temperature range corresponding to the second temperature range.

[0070] This reduces changes in the target speed level when the outdoor temperature fluctuates at the critical position of the first alternative temperature range, thus improving the stability of the refrigeration fan operation.

[0071] Optionally, the refrigeration equipment determines the target speed level of the refrigeration fan based on the exhaust temperature and the outdoor ambient temperature, including: the refrigeration equipment uses a preset second fan level database to perform a lookup operation based on the outdoor ambient temperature and the exhaust temperature to obtain the second speed level corresponding to both the exhaust temperature and the outdoor ambient temperature. The refrigeration equipment then determines this second speed level as the target speed level of the refrigeration fan.

[0072] In some embodiments, a preset second fan rating database is shown in Table 2. Wherein, Tao is the outdoor ambient temperature, and Tb is the exhaust temperature. The unit of the outdoor ambient temperature is degrees Celsius (°C). The unit of the exhaust temperature is degrees Celsius (°C).

[0073] Table 2

[0074]

[0075] In some embodiments, as shown in Table 2, the target speed level of the cooling fan is level 2 when the outdoor ambient temperature is greater than or equal to -30 degrees Celsius, less than -20 degrees Celsius, and the exhaust temperature is less than 30 degrees Celsius. When the outdoor ambient temperature is greater than or equal to -30 degrees Celsius, less than -20 degrees Celsius, greater than or equal to 30 degrees Celsius, and less than 65 degrees Celsius, the target speed level of the cooling fan is level 3. When the outdoor ambient temperature is greater than or equal to -30 degrees Celsius, less than -20 degrees Celsius, and the exhaust temperature is greater than or equal to 65 degrees Celsius, the target speed level of the cooling fan is level 4.

[0076] Optionally, the refrigeration equipment determines the target speed level of the refrigeration fan based on the exhaust temperature and the outdoor ambient temperature, including: the refrigeration equipment determining a third temperature range where the exhaust temperature falls from a plurality of preset second alternative temperature ranges; the refrigeration equipment determining a first temperature range where the outdoor ambient temperature falls from a plurality of preset first alternative temperature ranges; and the refrigeration equipment determining the target speed level of the refrigeration fan based on the exhaust temperature, the outdoor ambient temperature, the first temperature range, and the third temperature range. In this way, the target speed level of the refrigeration fan is obtained based on the first temperature range where the outdoor ambient temperature falls and the third temperature range where the exhaust temperature falls. This allows for control of the refrigeration fan based on the outdoor ambient temperature and the exhaust temperature. Consequently, the return gas temperature can be controlled using the refrigeration fan based on the outdoor ambient temperature and the exhaust temperature, thereby improving the return gas temperature.

[0077] Multiple preset second alternative temperature ranges include the eighth reference temperature range, the ninth reference temperature range, and the tenth reference temperature range.

[0078] Furthermore, the refrigeration equipment determines a third temperature range for the exhaust temperature from multiple preset second alternative temperature ranges, including: if the exhaust temperature is less than a preset fourth temperature threshold, the refrigeration equipment determines an eighth reference temperature range as the third temperature range for the exhaust temperature; and / or, if the exhaust temperature is greater than or equal to the preset fourth temperature threshold and less than a preset fifth temperature threshold, the refrigeration equipment determines a ninth reference temperature range as the third temperature range for the exhaust temperature; and / or, if the exhaust temperature is greater than or equal to the preset fifth temperature threshold, the refrigeration equipment determines a tenth reference temperature range as the third temperature range for the exhaust temperature. Wherein, the preset fourth temperature threshold is 30 degrees Celsius. The preset fifth temperature threshold is 65 degrees Celsius.

[0079] Furthermore, the target speed level of the refrigeration fan is determined based on the exhaust temperature, outdoor ambient temperature, a first temperature range, and a third temperature range. This includes: the refrigeration equipment determining the second temperature range in which the outdoor ambient temperature falls based on the first temperature range and a preset first hysteresis temperature; the refrigeration equipment determining the fourth temperature range in which the exhaust temperature falls based on the third temperature range and a preset second hysteresis temperature; and the refrigeration equipment determining the target speed level of the refrigeration fan based on the fourth temperature range and the second temperature range. Thus, the second temperature range in which the outdoor ambient temperature falls is re-determined based on the first temperature range and the preset first hysteresis temperature; the fourth temperature range in which the exhaust temperature falls is re-determined based on the third temperature range and the preset second hysteresis temperature; and then the target speed level of the refrigeration fan is determined based on the fourth temperature range and the second temperature range. By introducing the first hysteresis temperature and the second hysteresis temperature to determine the target speed level of the refrigeration fan, the fluctuation of the target speed level can be reduced.

[0080] For example, the second hysteresis temperature is 1 degree Celsius.

[0081] Furthermore, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range and the preset second hysteresis temperature, including: the refrigeration equipment acquiring the second upper limit temperature and / or the second lower limit temperature of the third temperature range. When the difference between the exhaust temperature and the second lower limit temperature is less than or equal to the preset second hysteresis temperature, or when the difference between the second upper limit temperature and the exhaust temperature is less than or equal to the preset second hysteresis temperature, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range and the second hysteresis temperature.

[0082] The second upper limit temperature of the third temperature range is the upper limit endpoint value of the third temperature range. The second lower limit temperature of the third temperature range is the lower limit endpoint value of the third temperature range.

[0083] In some embodiments, when the third temperature range is the eighth reference temperature range, the third temperature range has an upper limit endpoint value but no lower limit endpoint value. The second upper limit temperature of the third temperature range is a preset fourth temperature threshold value, namely 30 degrees Celsius.

[0084] In some embodiments, when the third temperature range is the ninth reference temperature range, the second upper limit temperature of the third temperature range is a preset fifth temperature threshold, i.e., 65 degrees Celsius. The second lower limit temperature of the third temperature range is a preset fourth temperature threshold, i.e., 30 degrees Celsius.

[0085] In some embodiments, when the third temperature range is the tenth reference temperature range, the third temperature range has a lower limit endpoint value but no upper limit endpoint value. The second lower limit temperature of the third temperature range is a preset fifth temperature threshold value, i.e., 65 degrees Celsius.

[0086] Optionally, the refrigeration device acquires the second upper limit temperature and / or the second lower limit temperature of the third temperature range, including: when the third temperature range is an eighth reference temperature range, the refrigeration device acquires the second upper limit temperature of the third temperature range.

[0087] Optionally, the refrigeration device acquires the second upper limit temperature and / or the second lower limit temperature of the third temperature range, including: when the third temperature range is a ninth reference temperature range, the refrigeration device acquires the second upper limit temperature and the second lower limit temperature of the third temperature range.

[0088] Optionally, the refrigeration device acquires the second upper limit temperature and / or the second lower limit temperature of the third temperature range, including: when the third temperature range is a tenth reference temperature range, the refrigeration device acquires the second lower limit temperature of the third temperature range.

[0089] Furthermore, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range and the second hysteresis temperature, including: the refrigeration equipment acquiring multiple historical exhaust temperatures; the refrigeration equipment acquiring a reference historical exhaust temperature from the historical exhaust temperatures in a backward acquisition order; if the reference historical exhaust temperature falls within the third temperature range, the refrigeration equipment determines the third temperature range as the fourth temperature range of the exhaust temperature; and / or, if the reference historical exhaust temperature does not fall within the third temperature range, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range, the reference historical exhaust temperature, and the second hysteresis temperature.

[0090] Specifically, if the difference between the exhaust temperature and the second lower limit temperature is less than or equal to a preset second hysteresis temperature, then the reference historical exhaust temperature is less than the difference between the second lower limit temperature and the preset second hysteresis temperature; or, the reference historical exhaust temperature is greater than the sum of the preset second lower limit temperature and the second hysteresis temperature. Similarly, if the difference between the second upper limit temperature and the exhaust temperature is less than or equal to a preset second hysteresis temperature, then the reference historical exhaust temperature is greater than or equal to the sum of the second upper limit temperature and the preset second hysteresis temperature; or, the reference historical exhaust temperature is less than or equal to the difference between the second upper limit temperature and the preset second hysteresis temperature.

[0091] Furthermore, the reference historical exhaust temperature is determined to be within the third temperature range using the following method: If the difference between the exhaust temperature and the second lower limit temperature is less than or equal to a preset second hysteresis temperature, and the reference historical exhaust temperature is greater than the sum of the preset second lower limit temperature and the second hysteresis temperature, then the reference historical exhaust temperature is determined to be within the third temperature range. And / or, if the difference between the second upper limit temperature and the exhaust temperature is less than or equal to a preset second hysteresis temperature, and the reference historical exhaust temperature is less than or equal to the difference between the second upper limit temperature and the preset second hysteresis temperature, then the reference historical exhaust temperature is determined to be within the third temperature range.

[0092] Optionally, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range, the reference historical exhaust temperature, and the second hysteresis temperature. This includes: when the third temperature range is the eighth reference temperature range and the reference historical exhaust temperature is greater than or equal to the second upper limit temperature, the refrigeration equipment determines a preset eleventh reference temperature range as the fourth temperature range of the exhaust temperature. The lower limit of the eleventh reference temperature range is the difference between the lower limit of the ninth reference temperature range and the second hysteresis temperature. The upper limit of the eleventh reference temperature range is the upper limit of the ninth reference temperature range.

[0093] Optionally, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range, the reference historical exhaust temperature, and the second hysteresis temperature. This includes: when the third temperature range is the ninth reference temperature range and the reference historical outdoor ambient temperature is greater than or equal to the second upper limit temperature, the refrigeration equipment determines a preset twelfth reference temperature range as the fourth temperature range of the exhaust temperature. The lower limit of the twelfth reference temperature range is the difference between the lower limit of the tenth reference temperature range and the second hysteresis temperature. The twelfth reference temperature range does not have an upper limit value.

[0094] Optionally, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range, the reference historical exhaust temperature, and the second hysteresis temperature. This includes: when the third temperature range is the ninth reference temperature range and the reference historical outdoor ambient temperature is less than the second lower limit temperature, the refrigeration equipment determines a preset thirteenth reference temperature range as the fourth temperature range of the exhaust temperature. The upper limit of the thirteenth reference temperature is the sum of the upper limit of the eighth reference temperature range and the second hysteresis temperature. The thirteenth reference temperature range does not have a lower limit.

[0095] Optionally, the refrigeration equipment determines the fourth temperature range of the exhaust temperature based on the third temperature range, the reference historical exhaust temperature, and the second hysteresis temperature. This includes: when the third temperature range is the tenth reference temperature range and the reference historical outdoor ambient temperature is less than the second lower limit temperature, the refrigeration equipment determines a preset fourteenth reference temperature range as the fourth temperature range of the exhaust temperature. The upper limit of the fourteenth reference temperature range is the sum of the upper limit of the ninth reference temperature range and the second hysteresis temperature. The lower limit of the fourteenth reference temperature range is the lower limit of the ninth reference temperature range.

[0096] Furthermore, the refrigeration equipment determines the target speed level of the refrigeration fan based on the fourth temperature range and the second temperature range, including: the refrigeration equipment determining the fifth temperature range corresponding to the second temperature range; the refrigeration equipment determining the sixth temperature range corresponding to the fourth temperature range; and the refrigeration equipment determining the first speed level corresponding to both the fifth and sixth temperature ranges as the target speed level of the refrigeration fan.

[0097] Furthermore, the refrigeration equipment determines the sixth temperature range corresponding to the fourth temperature range by: when the fourth temperature range includes all the second alternative temperature ranges, determining the second alternative temperature range as the sixth temperature range corresponding to the fourth temperature range.

[0098] In some embodiments, the exhaust temperature is 29.5 degrees Celsius. The third temperature range in which the exhaust temperature falls is the eighth reference temperature range. This exhaust temperature is 1 degree Celsius less than the second upper limit temperature of the eighth reference temperature range and the second hysteresis temperature. The refrigeration equipment acquires multiple historical exhaust temperatures. Then, following the acquisition order from back to front, a reference historical exhaust temperature of 31.2 degrees Celsius is acquired. The difference between the exhaust temperature and the second lower limit temperature is less than or equal to a preset second hysteresis temperature, and the reference historical exhaust temperature is greater than the difference between the second upper limit temperature and the preset second hysteresis temperature, 31 degrees Celsius, that is, the reference historical exhaust temperature is not in the third temperature range. Since the third temperature range in which the exhaust temperature falls is the eighth reference temperature range and the reference historical exhaust temperature is greater than or equal to the second upper limit temperature, a preset eleventh reference temperature range is determined as the fourth temperature range in which the exhaust temperature falls. That is, the range from the difference between the lower limit endpoint of the ninth reference temperature range and the second hysteresis temperature to the upper limit endpoint of the ninth reference temperature range is determined as the fourth temperature range in which the exhaust temperature falls. Therefore, the fourth temperature range for exhaust temperature is the temperature range of 29 degrees Celsius to 65 degrees Celsius.

[0099] Furthermore, the refrigeration equipment has multiple refrigeration fans. The refrigeration equipment controls the refrigeration fans according to a target speed level, including: the refrigeration equipment obtaining the number of fans corresponding to the target speed level; and the refrigeration equipment controlling each refrigeration fan according to the target speed level and the number of fans.

[0100] Optionally, the refrigeration equipment obtains the number of fans corresponding to the target speed level by: if the refrigeration equipment's startup time is less than or equal to a preset time threshold, determining a preset first number threshold as the number of fans corresponding to the target speed level. The first number threshold is four fans.

[0101] Optionally, the refrigeration equipment obtains the number of fans corresponding to the target speed level, including: when the refrigeration equipment is running for a duration longer than a preset duration threshold and the outdoor ambient temperature is in a first temperature range that is a first reference temperature range, the preset first number threshold is determined as the number of fans corresponding to the target speed level.

[0102] Optionally, the refrigeration equipment obtains the number of fans corresponding to the target speed level by: when the refrigeration equipment's startup time exceeds a preset time threshold and the outdoor ambient temperature falls within a first temperature range that is a second reference temperature range, determining a preset second threshold as the number of fans corresponding to the target speed level. The second threshold is set to 2.

[0103] Optionally, the refrigeration equipment obtains the number of fans corresponding to the target speed level, including: when the refrigeration equipment's startup time exceeds a preset time threshold, and the outdoor ambient temperature falls within a first temperature range that is a third reference temperature range, determining a preset third threshold as the number of fans corresponding to the target speed level. The third threshold is set to 1.

[0104] Furthermore, the refrigeration equipment controls each refrigeration fan according to the target speed level and the number of fans, including: selecting the number of refrigeration fans according to the target speed level; adjusting the speed of the selected refrigeration fans to the speed corresponding to the target speed level; and adjusting the duty cycle of the selected refrigeration fans to the duty cycle corresponding to the target speed level.

[0105] In some embodiments, as shown in Table 3, the speed range is specified in rpm (Revolutions Per Minute). Table 3 provides examples of speed adjustment for the refrigeration fan.

[0106] Table 3

[0107] Level 1 850 55 Level 2 1000 58 Level 3 1400 63 Level 4 1700 68 Level 5 2000 72 Level 6 2700 85 Level 7 3400 95

[0108] In some embodiments, as shown in Table 1, when the target speed level is 1, the speed corresponding to the target speed level is 850 rpm, and the duty cycle corresponding to the target speed level is 55.

[0109] In some embodiments, the refrigeration equipment has four refrigeration fans. The target speed level is level 2. The refrigeration equipment operates for a duration less than or equal to a preset time threshold. Therefore, the number of fans is the first preset threshold number, i.e., four. The refrigeration equipment adjusts the speed of all refrigeration fans to the speed corresponding to the target speed level, i.e., 1000 rpm. The duty cycle of all refrigeration fans is adjusted to the duty cycle corresponding to the target speed level, i.e., 58.

[0110] Thus, under low-temperature conditions, if the exhaust temperature is low, reducing the number of fan speeds can reduce the efficiency of heat release from the refrigerant in the condenser, increasing the refrigerant temperature and consequently increasing the exhaust temperature.

[0111] Combination Figure 2 As shown, this disclosure provides another method for controlling a refrigeration device, including:

[0112] Step S201: The refrigeration equipment obtains the outdoor ambient temperature and the compressor start-up time.

[0113] Step S202: When the outdoor ambient temperature is less than or equal to a preset low temperature limit, if the start-up time is less than or equal to a preset duration threshold, the refrigeration equipment determines the first temperature range where the outdoor ambient temperature is located from multiple preset first alternative temperature ranges.

[0114] Step S203: The refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and the preset first hysteresis temperature.

[0115] Step S204: The refrigeration equipment determines the target speed level of the refrigeration fan based on the second temperature range.

[0116] Step S205: The refrigeration equipment obtains the number of fans corresponding to the target speed level.

[0117] Step S206: The refrigeration equipment controls each refrigeration fan according to the target speed level and the number of fans.

[0118] The method for controlling refrigeration equipment provided in this disclosure involves acquiring the outdoor ambient temperature and the compressor start-up time. When the outdoor ambient temperature is less than or equal to a preset low-temperature threshold and the start-up time is less than or equal to a preset time threshold, a first temperature range is determined from multiple preset first alternative temperature ranges. A second temperature range is determined based on the first temperature range and a preset first hysteresis temperature. The second temperature range is then determined based on the first temperature range and the preset first hysteresis temperature. A target speed level for the refrigeration fan is then determined based on the second temperature range. The number of fans corresponding to the target speed level is obtained, and each refrigeration fan is controlled based on the target speed level and the number of fans. This allows for determining the refrigeration fan speed level based on the outdoor ambient temperature when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold and the compressor start-up time is less than or equal to a preset time threshold. This facilitates controlling the refrigeration fan based on the outdoor ambient temperature when the compressor has just started in a low-temperature environment. Compared to refrigeration fans that use constant fan speed, this method controls the refrigeration fan based on the compressor's start-up time when the outdoor ambient temperature is below or equal to a preset low-temperature threshold. This allows for better control of the heat released by the refrigerant passing through the condenser. Consequently, in low-temperature environments, this increases the refrigerant temperature and compressor return gas temperature immediately upon compressor startup. This improves the refrigeration efficiency of the equipment in low-temperature conditions.

[0119] Combination Figure 3 As shown, this disclosure provides another method for controlling a refrigeration device, including:

[0120] Step S301: The refrigeration equipment obtains the outdoor ambient temperature and the compressor start-up time.

[0121] Step S302: When the outdoor ambient temperature is less than or equal to a preset low temperature limit, the refrigeration equipment obtains the exhaust temperature.

[0122] In step S303, the refrigeration equipment determines the third temperature range in which the exhaust temperature is located among a plurality of preset second alternative temperature ranges.

[0123] Step S304: The refrigeration equipment determines the first temperature range in which the outdoor ambient temperature is located among a plurality of preset first alternative temperature ranges.

[0124] Step S305: The refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and the preset first hysteresis temperature.

[0125] Step S306: The refrigeration equipment determines the fourth temperature range in which the exhaust temperature is located based on the third temperature range and the preset second hysteresis temperature.

[0126] Step S307: The refrigeration equipment determines the target speed level of the refrigeration fan based on the fourth temperature range and the second temperature range.

[0127] Step S308: The refrigeration equipment obtains the number of fans corresponding to the target speed level.

[0128] Step S309: The refrigeration equipment controls each refrigeration fan according to the target speed level and the number of fans.

[0129] The method for controlling a refrigeration device provided in this disclosure acquires the outdoor ambient temperature and the compressor start-up duration. When the outdoor ambient temperature is less than or equal to a preset low-temperature threshold, the exhaust temperature is acquired. Then, a third temperature range containing the exhaust temperature is determined from multiple preset second alternative temperature ranges, and a first temperature range containing the outdoor ambient temperature is determined from multiple preset first alternative temperature ranges. A second temperature range containing the outdoor ambient temperature and a fourth temperature range containing the exhaust temperature are then redefined. A target speed level for the refrigeration fan is then determined based on the fourth and second temperature ranges. The number of fans corresponding to the target speed level is acquired, and each refrigeration fan is controlled according to the target speed level and the number of fans. This allows the refrigeration fan speed level to be determined based on the outdoor ambient temperature and exhaust temperature when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold and the compressor start-up duration exceeds a preset duration threshold. This facilitates controlling the refrigeration fan speed based on the outdoor ambient temperature and exhaust temperature in low-temperature environments where the compressor has been running for an extended period. Compared to refrigeration fans that use constant fan speed, this method controls the refrigeration fan based on the compressor's start-up time when the outdoor ambient temperature is below or equal to a preset low-temperature threshold. This allows for better control of the heat released by the refrigerant passing through the condenser. In low-temperature environments, this increases the refrigerant temperature and compressor return gas temperature immediately upon compressor startup. Consequently, it improves the refrigeration efficiency of the equipment in low-temperature conditions.

[0130] Combination Figure 4 As shown, this disclosure provides another method for controlling a refrigeration device, including:

[0131] Step S401: The refrigeration equipment acquires the outdoor ambient temperature and the compressor start-up time. Then, step S402 is executed.

[0132] Step S402: When the outdoor ambient temperature is less than or equal to a preset low temperature limit, the refrigeration equipment determines whether the compressor's start-up time is less than or equal to a preset time threshold. If yes, proceed to step S403. If no, proceed to step S406.

[0133] In step S403, the refrigeration equipment determines the first temperature range in which the outdoor ambient temperature falls among multiple preset first alternative temperature ranges. Then, step S404 is executed.

[0134] In step S404, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and the preset first hysteresis temperature. Then, step S405 is executed.

[0135] In step S405, the refrigeration equipment determines the target speed level of the refrigeration fan based on the second temperature range. Then, step S412 is executed.

[0136] Step S406: The refrigeration equipment obtains the exhaust temperature. Then, step S407 is executed.

[0137] In step S407, the refrigeration equipment determines the third temperature range in which the exhaust temperature falls among multiple preset second alternative temperature ranges. Then, step S408 is executed.

[0138] In step S408, the refrigeration equipment determines the first temperature range where the outdoor ambient temperature falls from a plurality of preset first alternative temperature ranges. Then, step S409 is executed.

[0139] In step S409, the refrigeration equipment determines the second temperature range of the outdoor ambient temperature based on the first temperature range and the preset first hysteresis temperature. Then, step S410 is executed.

[0140] In step S410, the refrigeration equipment determines the fourth temperature range in which the exhaust temperature falls based on the third temperature range and the preset second hysteresis temperature. Then, step S411 is executed.

[0141] In step S411, the refrigeration equipment determines the target speed level of the refrigeration fan based on the fourth temperature range and the second temperature range. Then, step S412 is executed.

[0142] Step S412: The refrigeration equipment obtains the number of fans corresponding to the target speed level. Then, step S413 is executed.

[0143] Step S413: The refrigeration equipment controls each refrigeration fan according to the target speed level and the number of fans.

[0144] The method for controlling refrigeration equipment provided in this disclosure can determine the target speed level of the refrigeration fan based on the outdoor ambient temperature and a preset first hysteresis temperature when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold. If the compressor has just started, the target speed level of the refrigeration fan is determined based on the outdoor ambient temperature, exhaust temperature, preset first hysteresis temperature, and a preset first hysteresis temperature. This enables targeted control of the refrigeration fan based on the compressor's operating time in low-temperature environments. It also allows control over the heat released by the refrigerant passing through the condenser using the refrigeration fan. Compared to a refrigeration fan using a constant fan speed, controlling the refrigeration fan based on the compressor's start-up time when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold facilitates increasing the refrigerant temperature and the compressor's return gas temperature in low-temperature environments. This improves the refrigeration efficiency of the refrigeration equipment in low-temperature environments.

[0145] Combination Figure 5As shown, this disclosure provides an apparatus 1 for controlling a refrigeration device, including a processor 2 and a memory 3. Optionally, the apparatus may further include a communication interface 4 and a bus 5. The processor 2, communication interface 4, and memory 3 can communicate with each other via the bus 5. The communication interface 4 can be used for information transmission. The processor 2 can invoke logical instructions in the memory 3 to execute the method for controlling the refrigeration device described in the above embodiment.

[0146] Furthermore, the logical instructions in the aforementioned memory 3 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0147] The memory 3, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 2 executes functional applications and data processing by running the program instructions / modules stored in the memory 3, that is, it implements the method for controlling the refrigeration equipment in the above embodiments.

[0148] The memory 3 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 3 may include high-speed random access memory and may also include non-volatile memory.

[0149] The apparatus for controlling refrigeration equipment provided in this disclosure acquires the outdoor ambient temperature and the compressor start-up duration. Then, when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold, the refrigeration fan is controlled according to the compressor start-up duration. This allows for control of the refrigeration fan speed based on the compressor start-up duration in low-temperature environments. It also enables control of the heat released by the refrigerant passing through the condenser using refrigeration fans with different speeds for different compressor start-up durations. Compared to using a refrigeration fan with a constant fan speed, controlling the refrigeration fan based on the compressor start-up duration when the outdoor ambient temperature is less than or equal to the preset low-temperature threshold facilitates increasing the refrigerant temperature and compressor return gas temperature in low-temperature environments. This improves the refrigeration efficiency of the refrigeration equipment in low-temperature environments.

[0150] Combination Figure 6As shown, this disclosure provides a refrigeration device 6, including a refrigeration device body and the aforementioned device 1 for controlling the refrigeration device. The device 1 for controlling the refrigeration device is installed on the refrigeration device body. The installation relationship described herein is not limited to placement inside the refrigeration device, but also includes installation connections with other components of the refrigeration device, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 1 for controlling the refrigeration device can be adapted to feasible refrigeration device bodies to achieve other feasible embodiments.

[0151] The refrigeration equipment provided in this embodiment acquires the outdoor ambient temperature and the compressor start-up time. Then, when the outdoor ambient temperature is less than or equal to a preset low-temperature threshold, the refrigeration fan is controlled according to the compressor start-up time. This allows for control of the refrigeration fan speed based on the compressor start-up time in low-temperature environments. It also enables control of the heat released by the refrigerant passing through the condenser by using refrigeration fans with different speeds for different compressor start-up times. This facilitates increasing the refrigerant temperature and compressor return gas temperature in low-temperature environments, thereby improving the refrigeration efficiency of the equipment in low-temperature conditions.

[0152] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a refrigeration device.

[0153] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0154] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0155] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0156] Those skilled in the art will 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, or a combination of computer software and electronic hardware. 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 implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0157] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0158] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a refrigeration device, characterized in that, include: Obtain the outdoor ambient temperature and compressor start-up time; When the outdoor ambient temperature is less than or equal to the preset low temperature limit, the refrigeration fan is controlled according to the compressor start-up time. The control of the refrigeration fan based on the compressor's start-up time includes: determining the target speed level of the refrigeration fan based on the outdoor ambient temperature when the start-up time is less than or equal to a preset time threshold; obtaining the exhaust temperature when the start-up time is greater than the preset time threshold; determining the target speed level of the refrigeration fan based on the exhaust temperature and the outdoor ambient temperature; and controlling the refrigeration fan based on the target speed level. The process of determining the target speed level of the cooling fan based on the outdoor ambient temperature includes: determining the first temperature range where the outdoor ambient temperature is located from a plurality of preset first alternative temperature ranges; and determining the target speed level of the cooling fan based on the first temperature range. The process of determining the target speed level of the cooling fan based on the exhaust temperature and the outdoor ambient temperature includes: determining a third temperature range in which the exhaust temperature is located among multiple preset second alternative temperature ranges; determining a first temperature range in which the outdoor ambient temperature is located among multiple preset first alternative temperature ranges; and determining the target speed level of the cooling fan based on the exhaust temperature, the outdoor ambient temperature, the first temperature range, and the third temperature range.

2. The method according to claim 1, characterized in that, The target speed level of the refrigeration fan is determined based on the first temperature range, including: The second temperature range of the outdoor ambient temperature is determined based on the first temperature range and the preset first hysteresis temperature. The target speed level of the refrigeration fan is determined based on the second temperature range.

3. The method according to claim 1, characterized in that, The target speed rating of the refrigeration fan is determined based on the exhaust temperature, outdoor ambient temperature, first temperature range, and third temperature range, including: The second temperature range of the outdoor ambient temperature is determined based on the first temperature range and the preset first hysteresis temperature. The fourth temperature range of the exhaust temperature is determined based on the third temperature range and the preset second hysteresis temperature. The target speed level of the refrigeration fan is determined based on the fourth temperature range and the second temperature range.

4. The method according to any one of claims 1 to 3, characterized in that, The refrigeration equipment has multiple refrigeration fans; Controlling the refrigeration fan according to the target speed level includes: Obtain the number of fans corresponding to the target speed level; Each refrigeration fan is controlled according to the target speed level and the number of fans.

5. An apparatus for controlling a refrigeration device, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to, when executing the program instructions, perform the method for controlling a refrigeration device as described in any one of claims 1 to 4.

6. A refrigeration device, characterized in that, include: Refrigeration equipment body; The device for controlling a refrigeration equipment as described in claim 5 is installed on the body of the refrigeration equipment.

7. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the method for controlling a refrigeration device as described in any one of claims 1 to 4.

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