Air Conditioning Refrigeration Control Method, Device, Electronic Device, Storage Medium and Air Conditioner

Abstract

The present invention provides an air-conditioning refrigeration control method, device, electronic device, storage medium and air conditioner. The air conditioner includes a PTC heating device, and the PTC heating device includes a first working mode and a second working mode. The working temperature of the PTC heating device in the first working mode is higher than that in the second working mode. The air-conditioning refrigeration control method includes: determining that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than a first duration; determining that the operating frequency of the air conditioner is less than or equal to a preset frequency; acquiring the indoor environmental temperature in real time; and controlling the PTC heating device to be turned on when the indoor environmental temperature is less than or equal to a preset temperature. The air-conditioning refrigeration control method of the present invention controls the PTC heating device to be turned on for temperature reaching compensation when the indoor environmental temperature has already been lower than the conventional comfortable temperature of the human body, preventing the indoor environmental temperature from further decreasing, avoiding the problem of large temperature fluctuations near the temperature reaching point, and avoiding repeated start-stop operations to reduce the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner refrigeration control method, device, electronic device, storage medium and air conditioner. Background Art

[0002] With the improvement of people's living standards, the application of air conditioners has become more and more popular. An air conditioner can adjust the air temperature and humidity to keep the indoor temperature and humidity environment within a comfortable range. When the refrigeration capacity of the air conditioner is greater than the room temperature adjustment requirement, there may be a problem of using a big horse to pull a small cart. The environmental temperature drops rapidly, and the compressor may reach the temperature and stop quickly, affecting the user experience. To maintain the room temperature, it is necessary to turn the air conditioner on and off repeatedly, resulting in frequent start and stop of the air conditioner, or reducing the operating frequency of the compressor. However, in the existing air conditioner, when the compressor has reached the lowest operating frequency, its refrigeration capacity may be greater than the refrigeration capacity required to maintain the room temperature, resulting in further reduction of the environmental temperature after reaching the temperature, still causing repeated start and stop phenomena, large temperature fluctuations near the temperature reach point, and reducing user comfort. Summary of the Invention

[0003] The present invention provides an air conditioner refrigeration control method, device, electronic device, storage medium and air conditioner to solve the defect in the prior art that when the compressor of the air conditioner has reached the lowest operating frequency, its refrigeration capacity is greater than the refrigeration capacity required to maintain the room temperature, resulting in repeated start and stop phenomena, large temperature fluctuations near the temperature reach point, and reducing user comfort.

[0004] In a first aspect, the present invention provides an air conditioner refrigeration control method. The air conditioner includes a PTC heating device. The PTC heating device includes a first working mode and a second working mode, and the working temperature of the PTC heating device in the first working mode is greater than that in the second working mode. The air conditioner refrigeration control method includes:

[0005] Determine that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than a first duration;

[0006] Determine that the operating frequency of the air conditioner is less than or equal to a preset frequency;

[0007] Obtain the indoor environmental temperature in real time;

[0008] When the indoor environmental temperature is less than or equal to a preset temperature, control the PTC heating device to turn on.

[0009] According to the air-conditioning refrigeration control method provided by the present invention, the PTC heating device includes a first conductive member, at least two second conductive members, and at least two PTC heating layers. The first conductive member is disposed between at least two of the second conductive members, and each PTC heating layer is disposed between the first conductive member and one of the second conductive members, and both sides of the PTC heating layer are in conductive contact with the first conductive member and the second conductive member respectively; wherein, the PTC heating layer includes a first PTC heating layer and a second PTC heating layer, the first PTC heating layer has a first operating temperature, the second PTC heating layer has a second operating temperature, and the first operating temperature is greater than the second operating temperature;

[0010] The operation of the PTC heating device in the first operating mode includes: controlling the first conductive member and the second conductive member on both sides of the first PTC heating layer to be energized;

[0011] The operation of the PTC heating device in the second operating mode includes: controlling the first conductive member and the second conductive member on both sides of the second PTC heating layer to be energized.

[0012] According to the air-conditioning refrigeration control method provided by the present invention, when the indoor environmental temperature is less than or equal to the preset temperature, controlling the PTC heating device to turn on includes:

[0013] When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, controlling the PTC heating device to operate in the second operating mode.

[0014] According to the air-conditioning refrigeration control method provided by the present invention, when the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, controlling the PTC heating device to operate in the second operating mode includes:

[0015] Controlling the PTC heating device to continuously operate in the second operating mode for a second duration.

[0016] According to the air-conditioning refrigeration control method provided by the present invention, when the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, controlling the PTC heating device to operate in the second operating mode further includes:

[0017] If the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature continues to increase, controlling the PTC heating device to operate in the first operating mode.

[0018] According to the air-conditioning refrigeration control method provided by the present invention, when the indoor environmental temperature is less than or equal to the preset temperature, controlling the PTC heating device to turn on further includes:

[0019] When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is greater than the preset temperature difference, control the PTC heating device to operate in the first operating mode.

[0020] In a second aspect, the present invention further provides a control device applicable to perform the air-conditioning refrigeration control method described in any one of the above. The control device includes:

[0021] A determination module, configured to determine that the air conditioner operates in a refrigeration mode and the refrigeration operation duration is greater than a first duration; and is further configured to determine that the operating frequency of the air conditioner is less than or equal to a preset frequency;

[0022] An acquisition module, configured to acquire the indoor environmental temperature in real time;

[0023] A control module, configured to control the PTC heating device to turn on when the indoor environmental temperature is less than or equal to the preset temperature; wherein the PTC heating device includes a first operating mode and a second operating mode, and the operating temperature of the PTC heating device in the first operating mode is greater than the operating temperature in the second operating mode.

[0024] In a third aspect, the present invention further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the air-conditioning refrigeration control method described in any one of the above is implemented.

[0025] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the air-conditioning refrigeration control method described in any one of the above is implemented.

[0026] In a fifth aspect, the present invention further provides an air conditioner, including an air conditioner body, a PTC heating device, and an electronic device described in one of the above; wherein the PTC heating device includes a first conductive member, at least two second conductive members, and at least two PTC heating layers. The first conductive member is disposed between at least two of the second conductive members, and each PTC heating layer is disposed between the first conductive member and one of the second conductive members, and both sides of the PTC heating layer are in conductive contact with the first conductive member and the second conductive member respectively; the PTC heating layer includes a first PTC heating layer and a second PTC heating layer, the first PTC heating layer has a first operating temperature, the second PTC heating layer has a first operating temperature, and the first operating temperature is greater than the second operating temperature;

[0027] The PTC heating device further includes a heat dissipating member and an insulating layer. The heat dissipating member includes a housing with an installation cavity formed therein. The first conductive member, the second conductive member, and the PTC heating layer are all inserted into the installation cavity. The connecting ends of the first conductive member and the connecting ends of the plurality of second conductive members all extend from the same end of the housing and are arranged in a staggered manner in the length direction of the housing. The insulating layer covers the outside of the first conductive member, the second conductive member, and the PTC heating layer and is disposed in the installation cavity.

[0028] The air-conditioning refrigeration control method provided by the present invention first determines whether the operating frequency of the air conditioner has reached the lowest frequency after the refrigeration has been turned on and run for the first duration, and then determines whether the indoor environmental temperature is lower than the preset temperature. When the operating frequency of the air conditioner has reached the lowest frequency and the indoor environmental temperature is lower than the preset temperature, it indicates that when the air conditioner reaches the lowest frequency, the indoor environmental temperature is still getting lower and lower, indicating that the refrigeration capacity of the air conditioner is large. When the indoor environmental temperature has been lower than the conventional comfortable temperature of the human body, the PTC heating device is controlled to be turned on to prevent the indoor environmental temperature from further decreasing, and the temperature reaching compensation is carried out through the PTC heating device, so as to avoid the problem of large temperature fluctuations near the temperature reaching point, avoid repeated start-stop operations from reducing the user experience, and effectively solve the defects in the prior art that the compressor of the air conditioner has reached the lowest frequency of operation, its refrigeration capacity is greater than the refrigeration capacity required to maintain the room temperature, resulting in repeated start-stop phenomena, large temperature fluctuations near the temperature reaching point, and reduced user comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is a schematic flowchart of the air-conditioning refrigeration control method provided by the embodiment of the present invention;

[0031] Figure 2 is a three-dimensional structural diagram of the PTC heating device provided by the embodiment of the present invention;

[0032] Figure 3 is a cross-sectional view of the PTC heating device provided by the embodiment of the present invention;

[0033] Figure 4 is Figure 3 an enlarged structural diagram of part A in

[0034] Figure 5 is a partial enlarged view of the PTC heating device provided by the embodiment of the present invention;

[0035] Figure 6 is a cross-sectional view of the PTC heating device provided by another embodiment of the present invention;

[0036] Figure 7 is a schematic structural diagram of the control device provided by an embodiment of the present invention;

[0037] Figure 8 is a schematic structural diagram of the electronic device provided by an embodiment of the present invention.

[0038] Reference numerals:

[0039] 1: First conductive member; 2: Second conductive member; 3: PTC heating layer; 4: Heat dissipation member; 5: Insulating layer; 6: Mounting member; 7: Fixing member;

[0040] 31: PTC heating sheet; 41: Housing; 42: Heat sink; 61: First jack; 62: Second jack; 63: First connection groove; 64: Second connection groove;

[0041] 710: Determination module; 720: Acquisition module; 730: Control module;

[0042] 810: Processor; 820: Communication interface; 830: Memory; 840: Communication bus. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0044] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "first" and "second" are used for numbering the product components for clear description and do not represent any substantial difference. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0045] It should be noted that unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0046] Figure 1 This is a schematic flowchart of the air-conditioning refrigeration control method according to an embodiment of the present invention. As Figure 1 shown, the air-conditioning refrigeration control method provided by the present invention includes the following steps:

[0047] Step S10: Determine that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than the first duration;

[0048] Step S20: Determine that the operating frequency of the air conditioner is less than or equal to the preset frequency;

[0049] Step S30: Obtain the indoor environmental temperature in real time;

[0050] Step S40: Control the PTC heating device to turn on when the indoor environmental temperature is less than or equal to the preset temperature.

[0051] In this embodiment, an air conditioner is installed to adjust the indoor air environment. The air conditioner includes a compressor, a condenser, and an evaporator. The compressor compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and then sends it to the condenser (outdoor unit) for heat dissipation to become a normal-temperature and high-pressure liquid refrigerant; the liquid refrigerant enters the evaporator (indoor unit) through an expansion valve or a capillary tube (throttling component). The space suddenly increases, the pressure decreases, and the liquid refrigerant vaporizes into a gaseous low-temperature refrigerant, absorbing a large amount of heat in the air. The evaporator becomes cold, and the air blows through the evaporator, so that the indoor unit blows cold air to achieve indoor refrigeration.

[0052] Among them, when the air conditioner is operating in the refrigeration mode, the operating frequency of the air conditioner is self-adjusted according to the indoor heat and cold changes. The compressor operates at a non-fixed frequency, quickly reaches the set temperature at a high speed when the air conditioner is turned on, and then the compressor becomes a low and slow speed to maintain the temperature, ensuring that the indoor temperature does not change suddenly, guaranteeing the user's body feeling comfort, and at the same time saving energy and reducing consumption. And a preset frequency is set in advance, and the preset frequency is used to judge the high and low of the air conditioner operating frequency. When the air conditioner operating frequency is greater than the preset frequency, it is determined that the air conditioner operating frequency is high; when the air conditioner operating frequency is less than or equal to the preset frequency, it is determined that the air conditioner operating frequency is low. Among them, the preset frequency can be the lowest operating frequency of the compressor or a set lowest frequency. For example, if the preset frequency is set to 30 Hz, then when the air conditioner operating frequency is less than or equal to 30 Hz, it is determined to be low.

[0053] There may be a situation where the compressor has reached the lowest operating frequency, but the cooling capacity of the air conditioner is still greater than the cooling capacity required to maintain the room temperature, resulting in a further decrease in the ambient temperature after reaching the set temperature. Moreover, a preset temperature is also pre-set, and the preset temperature is used to determine whether the indoor ambient temperature is lower than the conventional comfortable temperature of the human body. When the indoor ambient temperature is greater than the preset temperature, it is determined that the indoor ambient temperature is not lower than the conventional comfortable temperature of the human body; when the indoor ambient temperature is less than or equal to the preset temperature, it is determined that the indoor ambient temperature is lower than the conventional comfortable temperature of the human body. For example, if the preset temperature is set to 24 °C, it is determined that the temperature is lower than the conventional comfortable temperature of the human body when the indoor ambient temperature is less than or equal to 24 °C.

[0054] The air conditioner further includes a PTC (Positive Temperature Coefficient) heating device. The PTC heating device uses a PTC element to achieve electric heating. The resistance of the PTC element is relatively small at normal temperature and can heat itself up when powered on. Moreover, when the temperature reaches near the Curie temperature of the PTC element, the resistance value of the PTC element will rapidly increase within a narrow temperature range and approach that of an insulator. Therefore, the PTC element has the characteristics of self-controlled temperature heating, no open flame, not easily combustible, and no safety hazards, and also has advantages such as high heating efficiency and high power. The PTC element can be regarded as a constant-temperature heating body, and its operating temperature is approximately constant at its Curie temperature.

[0055] The PTC heating device includes a first operating mode and a second operating mode, and the operating temperature of the PTC heating device in the first operating mode is greater than that in the second operating mode. In the first operating mode, the operating temperature of the PTC heating device is the first operating temperature. That is to say, at this time, the PTC heating device heats at the first operating temperature; in the second operating mode, the operating temperature of the PTC heating device is the second operating temperature. That is to say, at this time, the PTC heating device heats at the second operating temperature; the first operating temperature is greater than the second operating temperature.

[0056] Specifically, in this embodiment, after the air conditioner is turned on, first determine the operating mode of the air conditioner. After determining that the air conditioner is operating in the cooling mode, then determine the cooling operation duration that continues after the cooling is turned on. When it is determined that the air conditioner is operating in the cooling mode and the cooling operation duration is greater than the first duration, for example, the first duration is 30 minutes. At this time, after 30 minutes of cooling operation, there are heat and cold changes indoors, and the operating frequency of the air conditioner also changes according to the cooling mode setting program. Then, obtain the operating frequency of the air conditioner and determine that the operating frequency of the air conditioner is less than or equal to the preset frequency, indicating that the air conditioner has reached the lowest operating frequency at this time. Then, continuously obtain the indoor environmental temperature and compare the indoor environmental temperature with the preset temperature. When the indoor environmental temperature is less than or equal to the preset temperature, it means that the indoor environmental temperature is relatively low and has dropped below the normal comfortable temperature of the human body, affecting the user's body feeling comfort. At this time, control the PTC heating device to turn on. The PTC heating device is energized to generate heat for temperature compensation to prevent the environmental temperature from further decreasing, avoid the problem of large temperature fluctuations near the temperature reaching point, ensure the user's body feeling comfort, and prevent the phenomenon of repeated start-stop.

[0057] The air conditioner cooling control method of the present invention first determines whether the operating frequency of the air conditioner has reached the lowest frequency after the cooling is turned on and operates for the first duration, and then determines whether the indoor environmental temperature is lower than the preset temperature. When the operating frequency of the air conditioner has reached the lowest frequency and the indoor environmental temperature is lower than the preset temperature, it indicates that when the air conditioner has reached the lowest frequency, the indoor environmental temperature is still getting lower and lower, indicating that the cooling capacity of the air conditioner is relatively large. When the indoor environmental temperature has dropped below the normal comfortable temperature of the human body, control the PTC heating device to turn on to prevent the indoor environmental temperature from further decreasing, perform temperature compensation through the PTC heating device, avoid the problem of large temperature fluctuations near the temperature reaching point, and avoid repeated start-stop to reduce the user experience, effectively solving the defects in the prior art that the compressor of the air conditioner has reached the lowest frequency of operation, its cooling capacity is greater than the cooling capacity required to maintain the room temperature, resulting in repeated start-stop phenomena, large temperature fluctuations near the temperature reaching point, and reduced user comfort.

[0058] Specifically, in the first working mode, the working temperature of the PTC heating device is greater than the first temperature, that is, the first working temperature is greater than the first temperature; in the second working mode, the working temperature of the PTC heating device is less than the second temperature, that is, the second working temperature is less than the second temperature; and the second temperature is less than the first temperature. For example, the first temperature is 200 °C, which is suitable for use when the air conditioner heats up quickly with high power; the second temperature is 150 °C, which is suitable for use when the air conditioner heats up with low power consumption.

[0059] Specifically, as Figures 2 to 6As shown in the figure, the PTC heating device includes a first conductive member 1, at least two second conductive members 2, and at least two PTC heating layers 3. The first conductive member 1 is disposed between the at least two second conductive members 2. Each PTC heating layer 3 is disposed between the first conductive member 1 and a second conductive member 2, and both sides of the PTC heating layer 3 are in conductive contact with the first conductive member 1 and the second conductive member 2 respectively. Among them, the PTC heating layer 3 includes a first PTC heating layer and a second PTC heating layer. The first PTC heating layer has a first operating temperature, the second PTC heating layer has a second operating temperature, and the first operating temperature is greater than the second operating temperature. The PTC heating device operates in the first operating mode by controlling the first conductive member 1 and the second conductive member 2 on both sides of the first PTC heating layer to be energized. The PTC heating device operates in the second operating mode by controlling the first conductive member 1 and the second conductive member 2 on both sides of the second PTC heating layer to be energized.

[0060] In this embodiment, the first conductive member 1 is disposed between the at least two second conductive members 2, so that the at least two second conductive members 2 can be respectively disposed opposite to a part of the first conductive member 1, to form an installation space between the second conductive member 2 and the part of the first conductive member 1 opposite to the second conductive member 2, so that the at least two second conductive members 2 and the first conductive member 1 can form at least two installation spaces. One of the first conductive member 1 and the second conductive member 2 is used to connect the neutral line, and the other is used to connect the live line. That is to say, when the first conductive member 1 is connected to the neutral line, the at least two second conductive members 2 are respectively connected to the live line; when the first conductive member 1 is connected to the live line, the at least two second conductive members 2 are respectively connected to the neutral line.

[0061] Each PTC heating layer 3 is disposed between a second conductive member 2 and the first conductive member 1. That is to say, the number of PTC heating layers 3 is the same as the number of second conductive members 2. The PTC heating layer 3 is installed in the above installation space. Both sides of the PCT heating layer 3 are in conductive contact with the second conductive member 2 and the first conductive member 1 respectively, forming a stacked heating body. The at least two PTC heating layers 3 and the first conductive member 1 and the at least two second conductive members 2 form at least two heating bodies. When any second conductive member 2 and the first conductive member 1 are electrically connected, the PTC heating layer 3 located between the second conductive member 2 and the first conductive member 1 is energized and generates heat.

[0062] Among them, the at least two PTC heating layers 3 include a first PTC heating layer and a second PTC heating layer, and the first PTC heating layer and the second PTC heating layer respectively include different types of PTC heating sheets 31. By using different types of PTC heating sheets 31, the first PTC heating layer has a first operating temperature, the second PTC heating layer has a second operating temperature, and the first operating temperature is greater than the second operating temperature.

[0063] When the first conductive member 1 and the second conductive member 2 on both sides of the first PTC heating layer are controlled to be energized, the first PTC heating layer is energized and generates heat, so that the PTC heating device generates heat at the first operating temperature. At this time, the PTC heating device operates in the first operating mode.

[0064] When the first conductive member 1 and the second conductive member 2 on both sides of the second PTC heating layer are controlled to be energized, the second PTC heating layer is energized and generates heat, so that the PTC heating device generates heat at the second operating temperature. At this time, the PTC heating device operates in the second operating mode.

[0065] In the PTC heating device of this embodiment, by respectively controlling the first PTC heating layer or the second PTC heating layer to be energized and generate heat as needed, the selection control of the first operating mode and the second operating mode of the PTC heating device is realized, meeting the application requirements of different scenarios. Moreover, at least two PTC heating layers 3 and the first conductive member 1 and at least two second conductive members 2 form a multilayer heating body with a laminated structure, which is compact in structure, saves occupied space while increasing the power density, improves the use effect, and improves user comfort.

[0066] In a specific embodiment, as Figure 4 shown, the PTC heating device includes a first conductive member 1 and two second conductive members 2. Both the first conductive member 1 and the second conductive member 2 are conductive strips; the first PTC heating layer is a conventional high-temperature PTC heating sheet layer, and the normal operating temperature can reach above 200°C. When the conductive strips on both sides of the high-temperature PTC heating sheet layer are energized, the PTC heating device is in the first operating mode and is used for rapid heating with high power in an air conditioner; the second PTC heating layer is a conventional low-temperature PTC sheet layer, and the normal operating temperature is below 150°C and is used for low-power heating in an air conditioner. When the conductive strips on both sides of the low-temperature PTC heating sheet layer are energized, the PTC heating device is in the second operating mode.

[0067] Specifically, in the case where the indoor ambient temperature is less than or equal to the preset temperature, controlling the PTC heating device to turn on includes the following steps:

[0068] Step S410, when the absolute value of the temperature difference between the indoor ambient temperature and the preset temperature is less than or equal to the preset temperature difference, controlling the PTC heating device to operate in the second operating mode.

[0069] In this embodiment, a preset temperature difference is also preset in advance, which is used to judge the temperature difference between the indoor environmental temperature and the preset temperature. When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, it is determined that the temperature difference between the indoor environmental temperature and the preset temperature is small; when the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is greater than the preset temperature difference, it is determined that the temperature difference between the indoor environmental temperature and the preset temperature is large. For example, if the preset temperature difference is set to 2°C, then when the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is within 2°C, it is determined that the temperature difference is small.

[0070] Specifically, in this embodiment, after determining that the indoor environmental temperature is less than or equal to the preset temperature, the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is calculated, and the absolute value of the temperature difference is compared with the preset temperature difference. When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, it indicates that the indoor environmental temperature is already lower than the normal comfortable temperature of the human body and the temperature difference between the indoor environmental temperature and the normal comfortable temperature of the human body is small. The amount of heat required to raise the temperature to above the normal comfortable temperature of the human body is less. At this time, the PTC heating device is controlled to operate in the second working mode, and the PTC heating device generates heat at a lower second working temperature for temperature compensation to prevent the environmental temperature from further decreasing. Moreover, the power of the PTC heating device is low, and heating is carried out with low power to raise the temperature. By selecting the working mode of the PTC heating device according to the demand of reaching the temperature during refrigeration, while ensuring the comfort of the user's body sensation, the power consumption is reduced, and energy is saved and consumption is reduced.

[0071] Specifically, when the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, controlling the PTC heating device to operate in the second working mode includes the following steps:

[0072] Step S411, control the PTC heating device to continuously operate in the second working mode for a second duration.

[0073] In this embodiment, according to the demand of reaching the temperature during refrigeration, by controlling the PTC heating device to continuously operate in the second working mode for a second duration, for example, the second duration is 10 minutes, the PTC heating device continuously generates heat for temperature compensation to prevent the environmental temperature from further decreasing, which is beneficial to raising the indoor environmental temperature to the normal comfortable temperature of the human body. In addition, after the PTC heating device continuously operates in the second working mode for the second duration and reaches the normal comfortable temperature of the human body, the PTC heating device can be controlled to turn off to prevent excessive heating from affecting the user's cooling capacity. While ensuring the comfort of the user's body sensation, the power consumption is reduced, and energy is saved and consumption is reduced.

[0074] Further, when the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, controlling the PTC heating device to operate in the second working mode further includes the following steps:

[0075] Step S412: If the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature continues to increase, control the PTC heating device to operate in the first working mode.

[0076] In this embodiment, after obtaining the indoor environmental temperature in real time, calculate the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature in real time, so as to be able to compare the change trend of the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature. When the PTC heating device is controlled to operate in the second working mode, if the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature continues to increase, it means that the heating capacity of the PTC heating device operating in the second working mode is less than the air-conditioning cooling capacity under the minimum frequency operation of the compressor, and the indoor environmental temperature is further decreasing. Controlling the PTC heating device to operate in the second working mode cannot meet the demand for temperature compensation to reach the set temperature; at this time, control the PTC heating device to operate in the first working mode. The PTC heating device generates heat and heats at a higher first working temperature, with a larger power, and can quickly heat up to ensure meeting the demand for temperature compensation to reach the set temperature, effectively preventing the indoor environmental temperature from further decreasing, realizing the selection of the working mode of the PTC heating device according to the demand of the refrigeration temperature reaching situation, and ensuring the user's body feeling comfort.

[0077] Further, when the indoor environmental temperature is less than or equal to the preset temperature, controlling the PTC heating device to turn on further includes the following steps:

[0078] Step S420: When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is greater than the preset temperature difference, control the PTC heating device to operate in the first working mode.

[0079] In this embodiment, after determining that the indoor environmental temperature is less than or equal to the preset temperature, calculate the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature, and compare the absolute value of the temperature difference with the preset temperature difference. When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is greater than the preset temperature difference, it means that the indoor environmental temperature has dropped below the normal comfortable temperature of the human body and the temperature difference between the indoor environmental temperature and the normal comfortable temperature of the human body is large. The heating capacity required to raise the temperature above the normal comfortable temperature of the human body is relatively large. At this time, control the PTC heating device to operate in the first working mode. The PTC heating device generates heat and heats at a higher first working temperature, with a larger power, and can quickly heat up to ensure meeting the demand for temperature compensation to reach the set temperature, effectively preventing the indoor environmental temperature from further decreasing, realizing the selection of the working mode of the PTC heating device according to the demand of the refrigeration temperature reaching situation, and ensuring the user's body feeling comfort.

[0080] The control device provided by the present invention is described below. The control device described below can be mutually referred to with the air-conditioning refrigeration control method described above.

[0081] Such as Figure 7As shown, the control device provided by the present invention includes a determination module 710, an acquisition module 720, and a control module 730. The determination module 710 is used to determine that the air conditioner is operating in the cooling mode and the cooling operation duration is greater than a first duration, and is also used to determine that the operating frequency of the air conditioner is less than or equal to a preset frequency; the acquisition module 720 is used to acquire the indoor environmental temperature in real time; the control module 730 is used to control the PTC heating device to turn on when the indoor environmental temperature is less than or equal to a preset temperature; wherein, the PTC heating device includes a first working mode and a second working mode, and the working temperature of the PTC heating device in the first working mode is greater than the working temperature in the second working mode.

[0082] Figure 8 An example of the physical structure diagram of an electronic device is as Figure 8 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840. Among them, the processor 810, the communication interface 820, and the memory 830 complete communication with each other through the communication bus 840. The processor 810 can call the logical instructions in the memory 830 to execute the air conditioner cooling control method, and the method includes: determining that the air conditioner is operating in the cooling mode and the cooling operation duration is greater than a first duration; determining that the operating frequency of the air conditioner is less than or equal to a preset frequency; acquiring the indoor environmental temperature in real time; and controlling the PTC heating device to turn on when the indoor environmental temperature is less than or equal to a preset temperature.

[0083] It should be noted that the electronic device in this embodiment can be a server, a PC, or other devices when specifically implemented, as long as its structure includes a Figure 8 processor 810, a communication interface 820, a memory 830, and a communication bus 840 as shown. Among them, the processor 810, the communication interface 820, and the memory 830 complete communication with each other through the communication bus 840, and the processor 810 can call the logical instructions in the memory 830 to execute the above method. The specific implementation form of the electronic device in this embodiment is not limited.

[0084] In addition, when the logical instructions in the above-mentioned memory 830 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0085] Furthermore, the present invention also discloses a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the air-conditioning refrigeration control method provided by the above-mentioned various methods. The method includes: determining that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than a first duration; determining that the operating frequency of the air conditioner is less than or equal to a preset frequency; obtaining the indoor environmental temperature in real time; and controlling the PTC heating device to turn on when the indoor environmental temperature is less than or equal to the preset temperature.

[0086] On the other hand, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the air-conditioning refrigeration control method provided by the above-mentioned various methods. The method includes: determining that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than a first duration; determining that the operating frequency of the air conditioner is less than or equal to a preset frequency; obtaining the indoor environmental temperature in real time; and controlling the PTC heating device to turn on when the indoor environmental temperature is less than or equal to the preset temperature.

[0087] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0088] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the above technical solution, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0089] On the other hand, the present invention also provides an air conditioner, which includes an air conditioner body, a PTC heating device, and an electronic device provided by the above embodiment.

[0090] Among them, as Figures 2 to 6 shown, the PTC heating device includes a first conductive member 1, at least two second conductive members 2, and at least two PTC heating layers 3. The first conductive member 1 is disposed between at least two second conductive members 2. Each PTC heating layer 3 is disposed between the first conductive member 1 and a second conductive member 2, and both sides of the PTC heating layer 3 are in conductive contact with the first conductive member 1 and the second conductive member 2 respectively; the PTC heating layer 3 includes a first PTC heating layer and a second PTC heating layer. The first PTC heating layer has a first operating temperature, and the second PTC heating layer has a second operating temperature, and the first operating temperature is greater than the second operating temperature. The PTC heating device further includes a heat dissipation member 4 and an insulating layer 5. The heat dissipation member 4 includes a housing 41 with an installation cavity formed inside. The first conductive member 1, the second conductive member 2, and the PTC heating layer 3 are all inserted into the installation cavity. The connection end of the first conductive member 1 and the connection ends of the plurality of second conductive members 2 all extend out of the same end of the housing 41 and are arranged in a staggered manner in the length direction of the housing 41; the insulating layer 5 is coated outside the first conductive member 1, the second conductive member 2, and the PTC heating layer 3 and is disposed in the installation cavity.

[0091] In this embodiment, at least two PTC heating layers 3, the first conductive member 1, and at least two second conductive members 2 form at least two heating elements, and the at least two heating elements together form a multi-layer heating element. The insulating layer 5 is wrapped around the outside of the arranged multi-layer heating element, and then the multi-layer heating element is integrally inserted and installed in the installation cavity of the housing 41. A heating space for the multi-layer heating element is formed in the installation cavity, and the insulating layer 5 is used for insulation between the multi-layer heating element and the inner wall of the housing 41. The connection ends of the first conductive member 1 and the connection ends of the at least two second conductive members 2 both extend out of the same end of the housing 41 and are arranged in a staggered manner in the length direction of the housing 41 for connecting to the terminal of the external power supply line respectively, so as to transmit current to the PCT heating layer 3. The heat generated by the PCT heating layer 3 when it is energized and heated is transferred to the heat dissipation member 4 through heat conduction, and the heat dissipation member 4 is used for dissipating heat outward, thereby realizing the heating function.

[0092] When any one of the second conductive members 2 is electrically connected to the first conductive member 1, the PTC heating layer 3 located between the second conductive member 2 and the first conductive member 1 is energized and heated, that is, one heating element generates heat; when any two or more of the partial second conductive members 2 are electrically connected to the first conductive member 1, multiple PTC heating layers 3 located between the partial second conductive members 2 and the first conductive member 1 are energized and heated, that is, multiple heating elements generate heat; when all the second conductive members 2 are electrically connected to the first conductive member 1, all the PTC heating layers 3 are energized and heated, that is, the multi-layer heating element generates heat as a whole, thereby realizing multi-stage heating control.

[0093] The air conditioner of this embodiment sets at least two PTC heating layers 3 and at least two second conductive members 2 through the PTC heating device to form at least two heating elements, and can control at least two PTC heating layers 3 to be energized and heated separately or simultaneously according to needs, realizing multi-stage heating control, and can be used in cold and hot scenarios, meeting the multi-mode application requirements. Moreover, at least two PTC heating layers 3, the first conductive member 1, and at least two second conductive members 2 form a multi-layer heating element with a laminated structure, which is compact in structure, saves occupied space while increasing the power density, improves the use effect, and greatly improves the comfort of users; at the same time, by arranging the connection ends of the first conductive member 1 and the connection ends of the at least two second conductive members 2 in a staggered manner, the circuit connection structures of the first conductive member 1 and the second conductive member 2 are staggered from each other, which is convenient for installation, is beneficial to reducing space occupation, and is beneficial to insulation, avoiding situations such as breakdown and leakage short circuit due to the too close distance of the circuit connection structure, and has good insulation performance while occupying a small space.

[0094] Specifically, such as Figure 3 、 Figure 4 and Figure 5As shown, the heat dissipation member 4 further includes a plurality of heat dissipation fins 42. The plurality of heat dissipation fins 42 are connected to the outer side surface of the housing 41 and are arranged at intervals along the length direction of the housing 41. By providing the plurality of heat dissipation fins 42, the heat dissipation area of the heat dissipation member 4 is effectively increased, the heat dissipation efficiency is improved, and thus the heating efficiency of the PCT heating device is improved, enhancing the usage effect.

[0095] Specifically, a plurality of heat dissipation fins 42 are provided on both opposite outer side surfaces of the housing 41, further increasing the heat dissipation area of the heat dissipation member 4 and improving the heating efficiency.

[0096] Furthermore, a plurality of heat dissipation fins 42 are provided on the outer side surfaces around the housing 41.

[0097] In one embodiment, as Figure 2 、 Figure 3 and 5 shown, the PCT heating device further includes a mounting member 6. The connection ends of the heat dissipation member 4, the first conductive member 1, and the plurality of second conductive members 2 are all fixedly connected to the mounting member 6, and the mounting member 6 insulates and isolates the connection ends of the first conductive member 1 and the plurality of second conductive members 2. By providing the mounting member 6, the installation and fixation of the first conductive member 1, the second conductive member 2, and the heat dissipation member 4 are realized, which is more firm and stable. The heat dissipation member 4 does not need to be directly fixedly connected to the multi-layer heating body, which is beneficial to ensuring the insulation effect between the multi-layer heating body and the heat dissipation member 4; moreover, the mounting member 6 insulates and isolates the connection ends of the first conductive member 1 and the plurality of second conductive members 2 respectively, avoiding breakdown, leakage short circuit and other situations between the connection ends, and having better insulation performance.

[0098] Specifically, the mounting member 6 is made of an insulating material, such as ceramic, plastic, rubber, etc.

[0099] Specifically, as Figure 3 and Figure 5 shown, the mounting member 6 is provided with a first jack 61 and a plurality of second jacks 62. A first connection groove 63 and a plurality of second connection grooves 64 are also formed on the side surface of the mounting member 6. The first jack 61 communicates with the first connection groove 63, and the plurality of second jacks 62 communicate with the plurality of second connection grooves 64 in a one-to-one correspondence, and the first connection groove 63 is located on the side of the second connection groove 64 away from the second jack 62; the connection end of the first conductive member 1 is inserted and fixed in the first jack 61, and the end of the first conductive member 1 extends into the first connection groove 63; the connection end of the second conductive member 2 is inserted and fixed in the second jack 62, and the end of the second conductive member 2 extends into the second connection groove 64.

[0100] In this embodiment, by arranging the first jack 61 and the first conductive member 1 to be fixedly connected by plugging, and the second jack 62 and the second conductive member 2 to be fixedly connected by plugging, the structure is simple and the connection is firm and stable; the end of the first conductive member 1 extends into the first connection groove 63, so that the connection end of the first conductive member 1 is exposed from the first connection groove 63, and the first conductive member 1 is connected to the external power supply line at the position of the first connection groove 63; the end of the second conductive member 2 extends into the second connection groove 64, so that the connection end of the second conductive member 2 is exposed from the second connection groove 64, and the second conductive member 2 is connected to the external power supply line at the position of the second connection groove 64; and the first connection groove 63 is located on the side of the second connection groove 64 away from the second jack 62, that is to say, the first connection groove 63 and the second connection groove 64 are located at different positions on the side of the mounting member 6, so that the circuit connection positions of the first conductive member 1 and the second conductive member 2 are respectively located at different positions on the side of the mounting member 6, effectively ensuring the insulation isolation effect on the connection end of the first conductive member 1 and the connection ends of the plurality of second conductive members 2, and the installation is convenient, improving the use effect.

[0101] Specifically, the second connection grooves 64 are respectively arranged on different sides of the mounting member 6, which is beneficial to ensuring that the circuit connection structures of the plurality of second conductive members 2 are staggered from each other, ensuring the insulation effect.

[0102] In an embodiment not shown, the first jack 61 can also penetrate to the end face of the mounting member 6, the mounting member 6 does not need to be provided with the first connection groove 63, and the end of the first conductive member 1 extends out of the end face of the mounting member 6, that is, the first conductive member 1 is connected to the external power supply line at the end face position of the mounting member 6; at the same time, the second conductive member 2 is connected to the external power supply line at the side position of the mounting member 6, so that the circuit connection positions of the first conductive member 1 and the second conductive member 2 are respectively located on different sides of the mounting member 6, and the insulation isolation effect on the connection end of the first conductive member 1 and the connection ends of the plurality of second conductive members 2 is better.

[0103] Specifically, the extending directions of the first jack 61 and the plurality of second jacks 62 are parallel to each other, and the first jack 61 and the plurality of second jacks 62 are spaced apart from each other in the direction perpendicular to the extending direction. Thus, the length directions of the first conductive member 1 and the plurality of second conductive members 2 are parallel to each other, and they are spaced apart from each other in the direction perpendicular to the length.

[0104] In one embodiment, as Figure 2 and Figure 3 shown, the PTC heating device further includes a fixing member 7, and one ends of the heat dissipation member 4, the first conductive member 1 and the plurality of second conductive members 2 away from the mounting member 6 are all fixedly connected to the fixing member 7. The two ends of the heat dissipation member 4, the first conductive member 1 and the plurality of second conductive members 2 are respectively fixed by the mounting member 6 and the fixing member 7, and the structure is more stable and reliable.

[0105] Specifically, the first conductive member 1 and the second conductive member 2 can be conductive plates or conductive bars. The first conductive member 1 and the second conductive member 2 are parallel to each other and arranged at intervals, and the PTC heating layer 3 is clamped and fixed between the first conductive member 1 and the second conductive member 2. Both ends of the conductive plate or conductive bar are fixed by the mounting member 6 and the fixing member 7 to ensure that the clamping and fixing of the PTC heating layer 3 are firm and stable, prevent the first conductive member 1 and the second conductive member 2 from piercing the insulating layer 5 and causing leakage and short circuit, and ensure the insulation effect with the housing 41.

[0106] Specifically, the insulating layer 5 includes at least two insulating films. By providing two or more insulating films, the strength of the insulating layer 5 is improved, and the insulating layer 4 wraps and fixes the multi-layer heating body structure more firmly, stably and reliably. When the multi-layer heating body is installed in the housing 41 of the heat sink 4, it effectively prevents the housing 41, the first conductive member 1, the second conductive member 2 and the PTC heating layer 3 from piercing the insulating layer 5 and causing leakage and short circuit, and ensures the insulation effect between the multi-layer heating body and the housing 41.

[0107] In a specific embodiment, the insulating film is a polyesterimide film.

[0108] Specifically, as Figure 4 shown, the PTC heating layer 3 includes a plurality of PTC heating sheets 31 arranged along the length direction. The PTC heating layer 3 is formed by sequentially electrically connecting the plurality of PTC heating sheets 31, which is beneficial to achieving a higher heating power density, improving the use effect, and at the same time beneficial to reducing costs, with strong practicability.

[0109] Specifically, the lengths of the first conductive member 1 and the second conductive member 2 are both greater than the length of the PTC heating layer 3, and the widths of the first conductive member 1 and the second conductive member 2 are greater than or equal to the width of the PTC heating sheet 31. Thus, the first conductive member 1 and the second conductive member 2 can effectively clamp and fix the plurality of PTC heating sheets 31 and arrange them to form the PTC heating layer 3, and it is also beneficial to prevent the PTC heating sheet 31 from piercing the insulating film and causing short circuit and leakage, which is stable, reliable and has strong practicability.

[0110] In an embodiment, the plurality of PTC heating layers 3 respectively include different types of PTC heating sheets 31. By using different types of PTC heating sheets 31, different PTC heating layers 3 have different heating power densities and heating characteristics, such as different Curie temperatures, etc. By selectively energizing different PTC heating layers 3 according to needs, the use requirements of more specific application scenarios can be met, the use effect can be improved, and the applicable range is wider.

[0111] Of course, in other embodiments, it is also possible to set the types of all the PTC heating sheets 31 of the PTC heating layer 3 to be the same, and by selecting and combining different numbers of the PTC heating layers 3 to work, the selection of the heating power can be achieved. It is also possible to set the types of the PTC heating sheets 31 of a part of the PTC heating layer 3 to be the same, and the types of the PTC heating sheets 31 of another part of the PTC heating layer 3 to be different, so that the selection range is wider, the use is more convenient and flexible, the use effect is improved, and the use requirements of more application scenarios can be met.

[0112] In one embodiment, as Figure 3 and Figure 4 shown, the number of the second conductive members 2 is two, and the two second conductive members 2 are symmetrically stacked on the opposite sides of the first conductive member 1, and the two PTC heating layers 3 are respectively connected between the two second conductive members 2 and the first conductive member 1.

[0113] In this embodiment, the two second conductive members 2 and the first conductive member 1 are stacked and arranged, and the two PTC heating layers 3 are clamped between the three conductive members to form a double-layer stacked PTC heating body structure, which is simple and compact. By controlling the two PTC heating layers 3 to be energized and heated respectively as needed, multi-stage control can be achieved, and the multi-mode application requirements can be met.

[0114] When the PTC heating device of this embodiment is used, the energization states of the first conductive member 1 and the two second conductive members 2 are in the order of live wire / neutral wire / neutral wire, or neutral wire / live wire / live wire.

[0115] In another embodiment, as Figure 6 shown, the number of the second conductive members 2 is more than two, and the more than two second conductive members 2 are arranged at intervals around the outer periphery of the first conductive member 1, and a PTC heating layer 3 is connected between each second conductive member 2 and the first conductive member 1. By arranging the more than two second conductive members 2 at intervals around the outer periphery of the first conductive member 1, the multiple PTC heating layers 3 are arranged in one-to-one correspondence with the multiple second conductive members 2, so as to form multiple heating bodies arranged around the outer periphery of the first conductive member 1, forming a multi-layer heating body structure of annular stacking, realizing more than two heating bodies, which is compact in structure, reduces the occupied space, increases the air filter density, and by controlling the multiple PTC heating layers 3 to be energized and heated respectively as needed, multi-stage control can be achieved, and the more mode application requirements can be met.

[0116] Specifically, the first conductive member is a hollow shaft, and the multiple PTC heating sheet layers are located between the second electrode plate and the first electrode plate.

[0117] In a specific embodiment, as Figure 6As shown, the first conductive member 1 is a conductive shaft, such as a hollow shaft, a cylindrical shaft, etc.; the second conductive member 2 is an arc-shaped conductive plate, and three arc-shaped conductive plates are arranged at intervals around the outer periphery of the conductive shaft; the cross-section of the PTC heating layer 3 is a sector, and three PTC heating layers 3 are also arranged at intervals around the outer periphery of the conductive shaft and are conductively and fixedly connected to the conductive shaft. The outer side of the PTC heating layer 3 is conductively and fixedly connected to the arc-shaped conductive plate, thereby forming a sector-shaped heating body; three sector-shaped heating bodies are combined to form a cylindrical heating body.

[0118] Of course, the first conductive member 1 can also be a prismatic shaft, such as a triangular prism, a quadrangular prism, a hexagonal prism, etc., and correspondingly, heating bodies in the shapes of a triangular prism, a quadrangular prism, and a hexagonal prism can be formed.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air-conditioning refrigeration control method, characterized in that, The air conditioner includes a PTC heating device, the PTC heating device includes a first operating mode and a second operating mode, and the operating temperature of the PTC heating device in the first operating mode is greater than the operating temperature in the second operating mode; The air conditioner refrigeration control method includes: Determine that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than a first duration; Determine that the operating frequency of the air conditioner is less than or equal to a preset frequency; Obtain the indoor environmental temperature in real time; When the indoor environmental temperature is less than or equal to a preset temperature, control the PTC heating device to turn on, including: Preset a preset temperature difference for judging the temperature difference between the indoor environmental temperature and the preset temperature; When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is less than or equal to the preset temperature difference, it is determined that the temperature difference between the indoor environmental temperature and the preset temperature is small, and the heat required to raise the temperature above the normal comfortable temperature of the human body is small. Control the PTC heating device to continuously operate in the second operating mode for a second duration. After reaching the normal comfortable temperature of the human body, control the PTC heating device to turn off; if the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature continues to increase, it is determined that the heat generated by the PTC heating device operating in the second operating mode is less than the air conditioner refrigeration capacity at the lowest operating frequency of the compressor, and control the PTC heating device to operate in the first operating mode; When the absolute value of the temperature difference between the indoor environmental temperature and the preset temperature is greater than the preset temperature difference, it is determined that the temperature difference between the indoor environmental temperature and the preset temperature is large, and the heat required to raise the temperature above the normal comfortable temperature of the human body is large. Control the PTC heating device to operate in the first operating mode.

2. The air-conditioning refrigeration control method according to claim 1, characterized in that, The PTC heating device includes a first conductive member, at least two second conductive members, and at least two PTC heating layers. The first conductive member is disposed between at least two of the second conductive members. Each PTC heating layer is disposed between the first conductive member and one of the second conductive members, and both sides of the PTC heating layer are in conductive contact with the first conductive member and the second conductive member respectively; wherein, the PTC heating layer includes a first PTC heating layer and a second PTC heating layer. The first PTC heating layer has a first operating temperature, the second PTC heating layer has a second operating temperature, and the first operating temperature is greater than the second operating temperature; The PTC heating device operating in the first operating mode includes: controlling the first conductive member and the second conductive member on both sides of the first PTC heating layer to be energized; The PTC heating device operating in the second operating mode includes: controlling the first conductive member and the second conductive member on both sides of the second PTC heating layer to be energized.

3. A control device, characterized in that, Applicable to the air conditioner refrigeration control method described in claim 1 or 2, the control device includes: A determination module for determining that the air conditioner is operating in the refrigeration mode and the refrigeration operation duration is greater than a first duration; and also for determining that the operating frequency of the air conditioner is less than or equal to a preset frequency; An acquisition module for obtaining the indoor environmental temperature in real time; A control module, configured to control the PTC heating device to turn on when the indoor ambient temperature is less than or equal to a preset temperature; wherein, the PTC heating device includes a first working mode and a second working mode, and the operating temperature of the PTC heating device in the first working mode is higher than that in the second working mode.

4. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the air conditioner refrigeration control method according to claim 1 or 2.

5. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the air conditioner refrigeration control method according to claim 1 or 2.

6. An air conditioner, characterized in that, It includes an air conditioner body, a PTC heating device and the electronic device according to claim 4; Wherein, the PTC heating device includes a first conductive member, at least two second conductive members and at least two PTC heating layers. The first conductive member is disposed between at least two of the second conductive members. Each PTC heating layer is disposed between the first conductive member and one of the second conductive members, and both sides of the PTC heating layer are in conductive contact with the first conductive member and the second conductive member respectively; the PTC heating layer includes a first PTC heating layer and a second PTC heating layer. The first PTC heating layer has a first operating temperature, the second PTC heating layer has a first operating temperature, and the first operating temperature is higher than the second operating temperature; The PTC heating device further includes a heat dissipation member and an insulating layer. The heat dissipation member includes a housing with an installation cavity formed therein. The first conductive member, the second conductive member and the PTC heating layer are all inserted into the installation cavity. The connection ends of the first conductive member and the connection ends of the plurality of second conductive members all extend out of the same end of the housing and are arranged in a staggered manner in the length direction of the housing; the insulating layer covers the outside of the first conductive member, the second conductive member and the PTC heating layer and is disposed in the installation cavity.

Images