Fast heating control method and device, air conditioner and computer readable storage medium

Abstract

Embodiments of the present application provide a fast heating control method, device, air conditioner and computer readable storage medium, the fast heating control method comprising: in response to the air conditioner entering fast heating operation, the following fast heating operation is performed: control the four-way valve power on, the first stop valve conduction, the throttling device runs at the maximum opening, the compressor is frequency increased to the fast heating operation frequency at the fast heating frequency increasing rate, the indoor fan is stopped, the fast heating frequency increasing rate is greater than the conventional heating frequency increasing rate, and the fast heating operation frequency is greater than the conventional heating operation frequency; in response to the temperature of the indoor heat exchanger being greater than or equal to the allowable air supply temperature, control the indoor fan to start at the maximum speed; in response to the actual running time length of the fast heating operation reaching the preset running time length, control the first stop valve to stop, the throttling device to run at the conventional heating throttling opening, the compressor to run at the conventional heating operation frequency, and the indoor fan to run at the conventional heating speed, so that the air conditioner switches to the conventional heating operation.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, specifically to a rapid heating control method, device, air conditioner, and computer-readable storage medium. Background Technology

[0002] In related technologies, when air conditioners start heating in low-temperature environments, they cannot quickly raise the indoor temperature, resulting in a low heating rate that cannot quickly meet the user's heating needs and leads to a poor user experience. Summary of the Invention

[0003] This application provides a rapid heating control method, device, air conditioner, and computer-readable storage medium, which can quickly raise the indoor ambient temperature in low-temperature environments, achieve rapid heating effect, and greatly improve the user experience.

[0004] In a first aspect, embodiments of this application provide a rapid heating control method for controlling an air conditioner to perform rapid heating. The air conditioner includes a refrigeration cycle loop, a bypass path, and an indoor fan. The refrigeration cycle loop includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. The four-way valve is connected to the exhaust port of the compressor, the suction port of the compressor, the indoor heat exchanger, and the outdoor heat exchanger, respectively. The indoor heat exchanger, the throttling device, and the outdoor heat exchanger are connected in series. One end of the bypass path is connected to a connecting pipe between the throttling device and the outdoor heat exchanger, and the other end is connected to the suction port of the compressor. A first shut-off valve is provided on the bypass path. The rapid heating control method includes: responding to the air conditioner entering rapid heating operation. The following rapid heating operation is performed: The four-way valve is energized, the first shut-off valve is opened, the throttling device operates at its maximum opening, the compressor is frequency-increased to the rapid heating operating frequency at a rapid heating frequency-increased rate, and the indoor fan is stopped. The rapid heating frequency-increased rate is greater than the conventional heating frequency-increased rate, and the rapid heating operating frequency is greater than the conventional heating operating frequency. In response to the indoor heat exchanger temperature being greater than or equal to the allowable supply air temperature, the indoor fan is started at its maximum speed. In response to the actual running time of the rapid heating operation reaching the preset running time, the first shut-off valve is closed, the throttling device operates at the conventional heating throttling opening, the compressor operates at the conventional heating operating frequency, and the indoor fan operates at the conventional heating speed, so that the air conditioner switches to conventional heating operation.

[0005] In some embodiments, after the indoor fan is started at maximum speed and before the actual running time of the rapid heating operation reaches a preset running time, the rapid heating operation includes: determining whether the temperature of the indoor heat exchanger is within a target temperature range, the target temperature range having the allowable supply air temperature as the lower end and the dangerous operating temperature as the upper end; in response to determining that the temperature of the indoor heat exchanger is greater than or equal to the dangerous operating temperature, controlling the throttling device to decrease to the normal heating throttling opening; in response to determining that the temperature of the indoor heat exchanger is less than the allowable supply air temperature, controlling the indoor fan to stop and the throttling device to increase to the maximum opening; in response to determining that the temperature of the indoor heat exchanger is within the target temperature range, controlling the indoor fan to run at maximum speed.

[0006] In some embodiments, before the air conditioner enters rapid heating operation, the rapid heating control method includes: determining the state of the air conditioner in response to the air conditioner receiving a rapid heating command; controlling the air conditioner to enter rapid heating operation in response to the air conditioner being in a shutdown state; determining whether the temperature of the indoor heat exchanger is greater than or equal to the allowable supply air temperature in response to the air conditioner being in normal heating operation; controlling the air conditioner to maintain the normal heating operation in response to determining that the temperature of the indoor heat exchanger is greater than or equal to the allowable supply air temperature; and controlling the air conditioner to enter rapid heating operation in response to determining that the temperature of the indoor heat exchanger is less than the allowable supply air temperature.

[0007] In some embodiments, the rapid heating control method includes: in response to the air conditioner receiving a conventional heating command in a stopped state, determining whether a low-temperature start-up condition is met; in response to determining that the low-temperature start-up condition is met, controlling the four-way valve to be energized, the first shut-off valve to be open, the throttling device to operate at its maximum opening, the compressor to increase its frequency to the rapid heating operating frequency at the rapid heating frequency increase rate, and the indoor fan to operate at a conventional heating operating speed; determining whether the exhaust temperature of the compressor is greater than or equal to a preset exhaust temperature; in response to determining that the exhaust temperature of the compressor is greater than or equal to the preset exhaust temperature, controlling the first shut-off valve to close, the throttling device to operate at a conventional heating throttling opening, the compressor to operate at the conventional heating operating frequency, and the indoor fan to operate at a conventional heating speed, so that the air conditioner switches to conventional heating operation.

[0008] In some embodiments, the low-temperature start-up conditions include at least one of the following: the outdoor ambient temperature is less than or equal to the low-temperature critical temperature; the compressor shutdown time is greater than or equal to the critical shutdown time.

[0009] Secondly, embodiments of this application provide a rapid heating control device for controlling an air conditioner to rapidly heat. The air conditioner includes a refrigeration cycle loop, a bypass path, and an indoor fan. The refrigeration cycle loop includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. The four-way valve is connected to the exhaust port of the compressor, the suction port of the compressor, the indoor heat exchanger, and the outdoor heat exchanger, respectively. The indoor heat exchanger, the throttling device, and the outdoor heat exchanger are connected in series. One end of the bypass path is connected to a connecting pipe between the throttling device and the outdoor heat exchanger, and the other end is connected to the suction port of the compressor. A first shut-off valve is provided on the bypass path. The rapid heating control device includes a rapid heating operation circuit configured to respond to the air conditioner entering... The rapid heating operation involves the following steps: energizing the four-way valve, opening the first shut-off valve, operating the throttling device at its maximum opening, increasing the compressor frequency to the rapid heating operating frequency at a rapid heating frequency increase rate, and stopping the indoor fan. The rapid heating frequency increase rate is greater than the conventional heating frequency increase rate, and the rapid heating operating frequency is greater than the conventional heating operating frequency. In response to the indoor heat exchanger temperature being greater than or equal to the allowable supply air temperature, the indoor fan is started at its maximum speed. In response to the actual running time of the rapid heating operation reaching a preset running time, the first shut-off valve is closed, the throttling device operates at the conventional heating throttling opening, the compressor operates at the conventional heating operating frequency, and the indoor fan operates at the conventional heating speed, thereby switching the air conditioner to conventional heating operation.

[0010] Thirdly, this application provides an air conditioner, comprising: a refrigeration cycle circuit including a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger, wherein the four-way valve is connected to the exhaust port of the compressor, the suction port of the compressor, the indoor heat exchanger, and the outdoor heat exchanger, and the indoor heat exchanger, the throttling device, and the outdoor heat exchanger are connected in series; a bypass flow path, one end of which is connected to a connecting pipe between the throttling device and the outdoor heat exchanger, and the other end of which is connected to the suction port of the compressor, wherein a first shut-off valve is provided on the bypass flow path; an indoor fan; a memory storing a computer program; and a processor, wherein when the computer program is executed by the processor, it implements the rapid heating control method provided in any of the above embodiments.

[0011] In some embodiments, the throttling device includes a first throttling component and a second throttling component. The first throttling component includes a first throttling valve and a first check valve connected in parallel. The second throttling component includes a second throttling valve and a second check valve connected in parallel. The indoor heat exchanger, the first throttling component, the second throttling component, and the outdoor heat exchanger are connected in series. When the air conditioner is cooling, the first check valve is closed and the second check valve is open. When the air conditioner is heating, the first check valve is open and the second check valve is closed.

[0012] In some embodiments, the second throttling assembly further includes a third one-way valve, which is connected in series with the second throttling valve and in parallel with the second one-way valve; when the air conditioner is cooling, the third one-way valve is closed; when the air conditioner is heating, the third one-way valve is open.

[0013] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the rapid heating control method described above.

[0014] The rapid heating control method provided in this application embodiment, during the initial operation phase, controls the first shut-off valve 61 and the bypass flow path 60 to switch to the conducting state, the throttling device to operate at its maximum opening, and the compressor to rapidly increase its frequency to the rapid heating operating frequency at a rapid heating frequency-increasing rate. This quickly raises the temperature of the indoor heat exchanger to the allowable supply air temperature sufficient for stable heating of the indoor return air within a short time. During this phase, the indoor fan is stopped to avoid blowing cold air. Once the temperature of the indoor heat exchanger is greater than or equal to the allowable supply air temperature, the indoor fan is started at its maximum speed to blow warm air into the room at maximum airflow, rapidly raising the indoor ambient temperature and quickly meeting the user's heating needs. In this way, the indoor ambient temperature can be rapidly increased in low-temperature environments, achieving a rapid heating effect and significantly improving the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of a rapid heating control method provided in some embodiments of this application;

[0017] Figure 2 This is a partial flowchart of a rapid heating control method provided in some embodiments of this application;

[0018] Figure 3 This is another partial flowchart of a rapid heating control method provided in some embodiments of this application;

[0019] Figure 4 This is another partial flowchart of a rapid heating control method provided in some embodiments of this application;

[0020] Figure 5 This is a connection structure diagram of an air conditioner provided in some embodiments of this application;

[0021] Figure 6 This is a refrigerant flow diagram of an air conditioner during normal heating operation provided in some embodiments of this application;

[0022] Figure 7 This is a refrigerant flow diagram of an air conditioner during rapid heating operation / low temperature start-up according to some embodiments of this application;

[0023] Figure 8 This is a diagram showing the refrigerant flow direction of an air conditioner during cooling, provided in some embodiments of this application;

[0024] Figure 9 This is a connection structure diagram of the outdoor heat exchanger of an air conditioner provided in some embodiments of this application;

[0025] Figure 10 This is a partial structural diagram of an air conditioner provided in some embodiments of this application.

[0026] Explanation of key component symbols:

[0027] 1-Air conditioner, 10-Compressor, 20-Four-way valve, 30-Indoor heat exchanger, 40-Throttling device, 41-First throttling assembly, 411-First throttling valve, 412-First check valve, 42-Second throttling assembly, 421-Second throttling valve, 422-Second check valve, 423-Third check valve, 50-Outdoor heat exchanger, 51-Heat exchange main pipe, 52-Distributor, 53-Heat exchange branch pipe, 60-Bypass flow 61-First shut-off valve, 70-Flash evaporator, 81-Outer ambient temperature sensor, 82-Outer pipe temperature sensor, 91-Inner ambient temperature sensor, 92-Inner pipe temperature sensor, 101-Outdoor unit, 1011-First refrigerant connection terminal, 1012-Second refrigerant connection terminal, 102-Indoor unit, 103-First refrigerant pipe, 104-Second refrigerant pipe, 105-Indoor fan, 106-Processor, 107-Memory. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0031] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0032] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0033] like Figure 1 As shown, in a first aspect, embodiments of this application provide a rapid heating control method for controlling an air conditioner 1 to perform rapid heating, the rapid heating control method including S10.

[0034] like Figure 5 As shown, the air conditioner 1 includes a refrigeration cycle loop, a bypass path 60, and an indoor fan 105. The refrigeration cycle loop includes a compressor 10, a four-way valve 20, an indoor heat exchanger 30, a throttling device 40, and an outdoor heat exchanger 50. The four-way valve 20 is connected to the discharge port of the compressor 10, the suction port of the compressor 10, the indoor heat exchanger 30, and the outdoor heat exchanger 50, respectively. The indoor heat exchanger 30, the throttling device 40, and the outdoor heat exchanger 50 are connected in series. One end of the bypass path 60 is connected to the connecting pipe between the throttling device 40 and the outdoor heat exchanger 50, and the other end is connected to the suction port of the compressor 10. Here, the bypass path 60 is equipped with a first shut-off valve 61, which is used to control the switching of the bypass path 60 between the open and closed states.

[0035] The type of air conditioner 1 can be determined according to actual needs. For example, it can be a split type such as a wall-mounted air conditioner 1 / cabinet air conditioner 1, or an integrated type such as a window air conditioner 1. This application embodiment does not limit this.

[0036] S10: In response to the air conditioner 1 entering rapid heating operation, the following rapid heating operations S101 to S104 are performed.

[0037] S101: Control the four-way valve 20 to be energized, the first shut-off valve 61 to be opened, the throttling device 40 to operate at its maximum opening, the compressor 10 to increase its frequency to the rapid heating operating frequency at the rapid heating frequency increase rate, and the indoor fan 105 to be stopped. The rapid heating frequency increase rate is greater than the conventional heating frequency increase rate, and the rapid heating operating frequency is greater than the conventional heating operating frequency.

[0038] After the four-way valve 20 is energized, the refrigeration cycle loop enters the heating cycle stage, and the refrigerant discharged by the compressor 10 flows to the indoor heat exchanger 30 through the four-way valve 20. Here, the rapid heating frequency increase rate refers to the rate at which the compressor 10 increases its frequency during rapid heating operation, and the normal heating frequency increase rate refers to the rate at which the compressor 10 increases its frequency during normal heating operation other than rapid heating operation; the rapid heating operating frequency refers to the target operating frequency of the compressor 10 during rapid heating operation, and the normal heating frequency increase rate refers to the target operating frequency of the compressor 10 during normal heating operation other than rapid heating operation.

[0039] When the air conditioner 1 needs to achieve rapid heating in a low-temperature environment, the temperature of the gaseous refrigerant discharged by the compressor 10 is low during the initial start-up phase. It is usually lower than the indoor ambient temperature but higher than the outdoor ambient temperature, which causes the indoor heat exchanger 30 to be unable to heat up quickly and the heating effect to be poor.

[0040] like Figure 7 As shown, to achieve this, on the one hand, the first shut-off valve 61 is controlled to open, keeping the bypass flow path 60 open, so that all or at least most of the refrigerant discharged from the exhaust port of the compressor 10 can flow sequentially through the four-way valve 20, the indoor heat exchanger 30, the throttling device 40, and the bypass flow path 60 before returning to the suction port of the compressor 10. This allows the refrigerant to absorb heat from the indoor return air while flowing through the indoor heat exchanger 30, thus raising its temperature. The refrigerant, after absorbing heat and raising its temperature, returns to the compressor 10 through the bypass flow path 60, rapidly increasing the exhaust temperature of the compressor 10, and thus rapidly increasing the refrigerant temperature of the indoor heat exchanger 30 in a short time. On the other hand, the control... The throttling device 40 operates at its maximum opening, preventing throttling of the refrigerant discharged from the indoor heat exchanger 30 during this phase. This avoids phase change in the refrigerant and the resulting heat loss and temperature drop, while ensuring the refrigerant returns to the compressor 10 at maximum flow rate, increasing refrigerant circulation flow and heating rate. Thirdly, the compressor 10 is controlled to rapidly increase its frequency to a higher rapid heating operating frequency, quickly improving its efficiency and compression ratio, thereby further rapidly increasing the discharge temperature of the compressor 10 and the refrigerant temperature of the indoor heat exchanger 30. Through these three controls, the temperature of the indoor heat exchanger 30 can be rapidly raised to an allowable supply air temperature sufficient for stable heating of the indoor return air. This allows the indoor return air to be quickly heated to a comfortable warm air state by the indoor heat exchanger 30, meeting the indoor heating needs. The temperature of the indoor heat exchanger 30 can be its refrigerant temperature.

[0041] In the initial stage of the air conditioner 1 entering rapid heating operation, especially when the temperature of the indoor heat exchanger 30 is still lower than the allowable supply air temperature, the indoor fan 105 can be controlled to stop to prevent the air conditioner 1 from blowing cold air into the room and causing discomfort to the user. Here, if the indoor fan 105 is in a stopped state before the air conditioner 1 enters rapid heating operation, the indoor fan 105 can be controlled to remain stopped; if the indoor fan 105 is in a running state before the air conditioner 1 enters rapid heating operation, the indoor fan 105 can be controlled to switch from the running state to the stopped state.

[0042] S102: In response to the indoor heat exchanger 30 having a temperature greater than or equal to the allowable supply air temperature, control the indoor fan 105 to start at its maximum speed.

[0043] When the temperature of the indoor heat exchanger 30 is greater than or equal to the allowable supply air temperature, it means that the indoor heat exchanger 30 is sufficient to stably heat the indoor return air and heat it into a relatively comfortable warm air. At this time, the indoor fan 105 can be controlled to start at its maximum speed to blow warm air into the room at the maximum air volume, so as to quickly raise the indoor ambient temperature and meet the user's heating needs.

[0044] S104: In response to the actual running time of the rapid heating operation reaching the preset running time, the first shut-off valve 61 is shut off, the throttling device 40 operates at the normal heating throttling opening, the compressor 10 operates at the normal heating operating frequency, and the indoor fan 105 operates at the normal heating speed, so that the air conditioner 1 switches to normal heating operation.

[0045] Here, the running time from when the air conditioner 1 starts rapid heating operation can be calculated. This running time can be, for example, the sum of the running times of S101 and S102, which is the actual running time of rapid heating operation. When the actual running time of rapid heating operation reaches the preset running time, it means that the air conditioner 1 has entered rapid heating operation for a relatively long time, and the indoor ambient temperature has been rapidly raised to the optimal temperature range, achieving the purpose of rapid heating. At this time, the first shut-off valve 61 can be controlled to shut off, keeping the bypass flow path 60 closed. All the refrigerant discharged from the exhaust port of the compressor 10 can flow sequentially through the four-way valve 20, the indoor heat exchanger 30, the throttling device 40, and the outdoor heat exchanger 50 before returning to the suction port of the compressor 10. At the same time, the throttling device 40 is controlled to operate at the normal heating throttling opening, the compressor 10 operates at the normal heating operating frequency, and the indoor fan 105 operates at the normal heating speed, so that the air conditioner 1 exits rapid heating operation and switches to normal heating operation.

[0046] Compared with related technologies, the rapid heating control method provided in this application, during the initial operation phase, controls the first shut-off valve 61 and the bypass flow path 60 to switch to the conducting state, the throttling device 40 to operate at its maximum opening, and the compressor 10 to rapidly increase its frequency to the rapid heating operating frequency at a rapid heating frequency increase rate. This quickly raises the temperature of the indoor heat exchanger 30 to the allowable supply air temperature for stable heating of the indoor return air within a short time. During this phase, the indoor fan 105 is stopped to avoid blowing cold air. Once the temperature of the indoor heat exchanger 30 is greater than or equal to the allowable supply air temperature, the indoor fan 105 is started at its maximum speed to blow warm air into the room at maximum airflow, rapidly raising the indoor ambient temperature and quickly meeting the user's heating needs. In this way, the indoor ambient temperature can be rapidly increased in low-temperature environments, achieving a rapid heating effect and significantly improving the user experience.

[0047] like Figure 2As shown, in some embodiments, the rapid heating operation may include S1031 to S1034 after S102 and before S104.

[0048] S1031: Determine whether the temperature of the indoor heat exchanger 30 is within the target temperature range, with the allowable supply air temperature as the lower end and the dangerous operating temperature as the upper end.

[0049] Here, the specific value of the permissible supply air temperature can be determined according to actual needs, and this application embodiment does not limit it; for example, the permissible supply air temperature can be different values ​​such as 52℃, 53℃, 54℃, 55℃, or 56℃. The specific value of the hazardous operating temperature can be determined according to actual needs, and this application embodiment does not limit it; for example, the hazardous operating temperature can be different values ​​such as 58℃, 59℃, 60℃, 61℃, or 62℃.

[0050] S1032: In response to determining that the temperature of the indoor heat exchanger 30 is greater than or equal to the dangerous operating temperature, the throttling device 40 is controlled to be reduced to the normal heating throttling opening.

[0051] When the temperature of the indoor heat exchanger 30 is determined to be greater than or equal to the dangerous operating temperature, it indicates that the refrigerant temperature of the indoor heat exchanger 30 is high, and the compressor 10 is at risk of damage. At this time, the throttling device 40 can be controlled to be reduced to the normal heating throttling opening. The normal heating throttling opening refers to the target opening of the throttling device 40 during normal heating operation. By using the throttling device 40 to control the refrigerant discharged from the indoor heat exchanger 30, the discharge volume of the compressor 10 is reduced, so that the refrigerant temperature of the indoor heat exchanger 30 gradually decreases to within the target temperature range, ensuring the safe operation of the compressor 10.

[0052] S1033: In response to determining that the temperature of the indoor heat exchanger 30 is less than the allowable supply air temperature, the indoor fan 105 is stopped and the throttling device 40 is increased to the maximum opening.

[0053] When the temperature of the indoor heat exchanger 30 is determined to be lower than the allowable supply air temperature, it indicates that the temperature of the indoor heat exchanger 30 and the outlet air temperature of the air conditioner 1 are both low. At this time, the indoor fan 105 can be stopped to prevent cold air from being blown into the room; at the same time, the throttling device 40 can be increased to its maximum opening to further increase the refrigerant circulation flow rate and temperature rise rate, so as to quickly raise the temperature of the indoor heat exchanger 30 to the target temperature range and achieve the purpose of rapid heating.

[0054] S1034: In response to determining that the temperature of the indoor heat exchanger 30 is within the target temperature range, the indoor fan 105 is controlled to operate at its maximum speed.

[0055] When the temperature of the indoor heat exchanger 30 is determined to be within the target temperature range, it indicates that the temperature of the indoor heat exchanger 30 is relatively moderate. This allows for a rapid increase in the indoor return air temperature without posing a risk of damage to the compressor 10. At this point, the indoor fan 105 can be controlled to operate at its maximum speed to blow warm air into the room at maximum airflow, quickly raising the indoor ambient temperature and rapidly meeting the user's heating needs.

[0056] like Figure 3 As shown, in some embodiments, before S10, the rapid heating control method may include S001 to S005.

[0057] S001: In response to the air conditioner 1 receiving a rapid heating command, determine the state of the air conditioner 1.

[0058] S002: In response to the air conditioner 1 being in a stopped state, control the air conditioner 1 to enter rapid heating operation. In other words, if the air conditioner 1 receives a rapid heating command while in a stopped state, it can be controlled to directly enter rapid heating operation from the stopped state.

[0059] S003: In response to the air conditioner 1 being in normal heating operation, determine whether the temperature of the indoor heat exchanger 30 is greater than or equal to the allowable supply air temperature.

[0060] S004: In response to determining that the temperature of the indoor heat exchanger 30 is greater than or equal to the allowable supply air temperature, control the air conditioner 1 to maintain normal heating operation.

[0061] If air conditioner 1 receives a rapid heating command under normal heating operation, and the temperature of indoor heat exchanger 30 is greater than or equal to the allowable supply air temperature, it means that air conditioner 1 can meet the indoor rapid heating demand through normal heating operation, and air conditioner 1 can be controlled to continue to maintain normal heating operation without switching to rapid heating operation.

[0062] S005: In response to determining that the temperature of the indoor heat exchanger 30 is less than the allowable supply air temperature, the air conditioner 1 is controlled to enter rapid heating operation.

[0063] If air conditioner 1 receives a rapid heating command during normal heating operation, and the temperature of indoor heat exchanger 30 is lower than the allowable supply air temperature, it means that air conditioner 1 cannot meet the rapid indoor heating demand through normal heating operation. At this time, air conditioner 1 can be controlled to switch from normal heating operation to rapid heating operation, and then the above-mentioned rapid heating operation can be performed.

[0064] By setting S001 to S005, upon receiving a rapid heating command, the actual operating needs of the air conditioner 1 can be determined based on its current state. Then, the air conditioner 1 can be controlled to enter rapid heating operation or continue to maintain normal heating operation according to the actual operating needs, thus meeting the actual operating needs in a more suitable way.

[0065] like Figure 4 As shown, in some embodiments, the rapid heating control method may include S1061 to S1063.

[0066] S1061: In response to receiving a conventional heating command while the air conditioner 1 is in a stopped state, determine whether the low temperature start-up conditions are met.

[0067] S1062: In response to determining that the low temperature start-up conditions are met, the four-way valve 20 is energized, the first shut-off valve 61 is opened, the throttling device 40 is operated at its maximum opening, the compressor 10 is frequency-upgraded to the rapid heating operating frequency at the rapid heating frequency upgrade rate, and the indoor fan 105 is operated at the normal heating operating speed.

[0068] When the low-temperature start-up conditions are met, it indicates that the current outdoor ambient temperature is low, for example, possibly below -15°C. At this temperature, the lubricating oil temperature of compressor 10 is low, the lubricating oil viscosity is high, and its fluidity is insufficient, preventing the lubricating oil from adequately lubricating and protecting the components of compressor 10. If compressor 10 continues to start, it may cause damage to the components of compressor 10, leading to a decrease in the operational reliability of compressor 10.

[0069] like Figure 7As shown, to achieve this, the four-way valve 20 can be energized to allow the refrigeration cycle to enter the heating cycle stage. The refrigerant discharged from the compressor 10 flows to the indoor heat exchanger 30 through the four-way valve 20. Simultaneously, the first shut-off valve 61 is opened to keep the bypass path 60 open, allowing all or at least most of the refrigerant discharged from the compressor 10's exhaust port to flow sequentially through the four-way valve 20, the indoor heat exchanger 30, the throttling device 40, and the bypass path 60 before returning to the compressor 10's suction port. This allows the refrigerant to absorb heat from the indoor return air while flowing through the indoor heat exchanger 30, thus raising its temperature. The heated refrigerant then returns to the compressor 10 through the bypass path 60 to quickly increase the temperature of the compressor 10's lubricating oil. This increased lubricating oil temperature improves the oil's fluidity and lubrication protection, enhancing the compressor 10's operational reliability during low-temperature startup. Furthermore, the throttling device 40 is controlled to open the first shut-off valve 61, keeping the bypass path 60 open. The flow control device 40 operates at its maximum opening, preventing the throttling device 40 from throttling the refrigerant discharged from the indoor heat exchanger 30 during this stage. This avoids phase change in the refrigerant and the resulting heat loss and temperature drop, while ensuring the refrigerant returns to the compressor 10 at maximum flow rate, increasing the refrigerant circulation flow and heating rate. Thirdly, the compressor 10 is controlled to rapidly increase its frequency from a high low-temperature heating rate to a high low-temperature heating operating frequency, quickly improving its efficiency and compression ratio. This further rapidly increases the discharge temperature of the compressor 10 and the refrigerant temperature of the indoor heat exchanger 30, further improving the lubricating oil temperature, fluidity, and lubrication protection effect. Through these three controls, the lubricating oil temperature, fluidity, and lubrication protection effect can be rapidly improved in a short time, ensuring the compressor 10 starts and operates with reliable lubrication, and improving the operational reliability of the compressor 10 during low-temperature startup. Here, the indoor fan 105 can be controlled to operate at its normal heating speed.

[0070] S1063: Determine whether the exhaust temperature of compressor 10 is greater than or equal to the preset exhaust temperature.

[0071] Here, the preset exhaust temperature is used to determine the level of the exhaust temperature of the compressor 10, and then to determine whether the compressor 10 can operate normally for heating based on the level of the exhaust temperature. The specific value of the preset exhaust temperature can be determined according to actual needs, and this application embodiment does not limit it. For example, the preset exhaust temperature can be different values ​​such as 28°C, 29°C, 30°C, 31°C, or 32°C.

[0072] S1064: In response to determining that the discharge temperature of the compressor 10 is greater than or equal to the preset discharge temperature, the first shut-off valve 61 is shut off, the throttling device 40 is operated at the normal heating throttling opening, the compressor 10 is operated at the normal heating operating frequency, and the indoor fan 105 is operated at the normal heating speed, so that the air conditioner 1 switches to normal heating operation.

[0073] When the discharge temperature of compressor 10 is determined to be greater than or equal to the preset discharge temperature, it indicates that compressor 10 has achieved safe start-up in a low-temperature environment. At this time, the first shut-off valve 61 can be controlled to shut off, the throttling device 40 can be operated at the normal heating throttling opening, the compressor 10 can be operated at the normal heating operating frequency, and the indoor fan 105 can be operated at the normal heating speed, so that the air conditioner 1 switches to normal heating operation and the compressor 10 exits the low-temperature start-up stage.

[0074] In some embodiments, the low-temperature start-up conditions include at least one of the following: the outdoor ambient temperature is less than or equal to the low-temperature critical temperature; the compressor 10 shutdown time is greater than or equal to the critical shutdown time.

[0075] Here, the low-temperature critical temperature refers to the critical temperature at which the compressor 10 faces a risk of starting. Its specific value can be determined according to actual needs, and this application embodiment does not limit it. When the outdoor ambient temperature is less than or equal to the low-temperature critical temperature, it indicates that the compressor 10 faces a risk of low-temperature start-up damage at that outdoor ambient temperature. In some examples, the low-temperature critical temperature can be different values ​​such as -10℃ or -15℃.

[0076] Here, the critical shutdown duration refers to the shutdown duration during which the compressor 10 faces a startup risk when restarting after a shutdown. Its specific value can be determined according to actual needs, and this embodiment does not limit it. When the compressor 10 shutdown duration is greater than or equal to the critical shutdown duration, it indicates that the compressor 10 may be at risk of damage during low-temperature startup. In some examples, the compressor 10 shutdown duration can be different values ​​such as 4 hours or 5 hours.

[0077] Secondly, this application provides a rapid heating control device for controlling an air conditioner 1 to rapidly heat. The air conditioner 1 includes a refrigeration cycle loop, a bypass flow path 60, and an indoor fan 105. The refrigeration cycle loop includes a compressor 10, a four-way valve 20, an indoor heat exchanger 30, a throttling device 40, and an outdoor heat exchanger 50. The four-way valve 20 is connected to the exhaust port of the compressor 10, the suction port of the compressor 10, the indoor heat exchanger 30, and the outdoor heat exchanger 50, respectively. The indoor heat exchanger 30, the throttling device 40, and the outdoor heat exchanger 50 are connected in series. One end of the bypass flow path 60 is connected to the connecting pipe between the throttling device 40 and the outdoor heat exchanger 50, and the other end is connected to the suction port of the compressor 10. A first shut-off valve 61 is provided on the bypass flow path 60. The rapid heating control device includes: a rapid heating operation circuit, and a controlled... In response to receiving a rapid heating command while the air conditioner 1 is in a stopped state, the following rapid heating operations are performed: the four-way valve 20 is energized, the first shut-off valve 61 is opened, the throttling device 40 operates at its maximum opening, and the compressor 10 is frequency-increased to the rapid heating operating frequency at a rapid heating frequency-increased rate greater than the normal heating frequency-increased rate, and the rapid heating operating frequency is greater than the normal heating operating frequency; in response to the temperature of the indoor heat exchanger 30 being greater than or equal to the allowable supply air temperature, the indoor fan 105 is started at its maximum speed; in response to the actual running time of the rapid heating operation reaching the preset running time, the first shut-off valve 61 is closed, the throttling device 40 operates at the normal heating throttling opening, the compressor 10 operates at the normal heating operating frequency, and the indoor fan 105 operates at the normal heating speed, so that the air conditioner 1 switches to normal heating operation.

[0078] like Figures 5 to 8 as well as Figure 10 As shown, in a third aspect, this application provides an air conditioner 1, which includes a refrigeration cycle loop, a bypass path 60, an indoor fan 105, a processor 106, and a memory 107. It can rapidly raise the indoor ambient temperature in low-temperature environments, achieving a rapid heating effect, and can improve the operational reliability of the compressor 10 in low-temperature environments. The memory 107 stores a computer program, which, when executed by the processor 106, implements the rapid heating control method provided in any of the above embodiments.

[0079] The refrigeration cycle circuit includes a compressor 10, a four-way valve 20, an indoor heat exchanger 30, a throttling device 40, and an outdoor heat exchanger 50. The four-way valve 20 is connected to the discharge port of the compressor 10, the suction port of the compressor 10, the indoor heat exchanger 30, and the outdoor heat exchanger 50, respectively. The indoor heat exchanger 30, the throttling device 40, and the outdoor heat exchanger 50 are connected in series.

[0080] One end of the bypass flow path 60 is connected to the connecting pipe between the throttling device 40 and the outdoor heat exchanger 50, and the other end is connected to the suction port of the compressor 10. Here, the bypass flow path 60 is provided with a first shut-off valve 61, which is used to control the bypass flow path 60 to switch between the open state and the shut-off state.

[0081] Processor 106 is connected to memory 107 and can perform various actions and processes according to the program stored in memory 107. Specifically, processor 106 can be an integrated circuit chip with signal processing capabilities. The processor 106 can be a general-purpose processor 106, a digital signal processor 106 (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor 106 can be a microprocessor 106, or it can be any conventional processor 106, and can be based on x86 architecture or ARM architecture.

[0082] Memory 107 may be volatile memory or non-volatile memory, or may include both. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that the memory of the methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0083] When the air conditioner 1 does not need to achieve rapid heating but only needs to perform regular heating, the first shut-off valve 61 can be switched to the shut-off state so that the bypass flow path 60 is kept closed. All the refrigerant discharged from the exhaust port of the compressor 10 can flow through the four-way valve 20, the indoor heat exchanger 30, the throttling device 40 and the outdoor heat exchanger 50 in sequence and return to the suction port of the compressor 10 to achieve refrigerant circulation.

[0084] At this time, the first shut-off valve 61 can be switched to the conducting state to keep the bypass flow path 60 conducting. All or at least most of the refrigerant discharged from the exhaust port of the compressor 10 can flow sequentially through the four-way valve 20, the indoor heat exchanger 30, the throttling device 40 and the bypass flow path 60 before returning to the suction port of the compressor 10 to achieve refrigerant circulation. When the refrigerant flows through the indoor heat exchanger 30, it can absorb heat from the indoor return air to achieve refrigerant temperature rise. After absorbing heat and raising its temperature, the refrigerant returns to the compressor 10 through the bypass flow path 60 to quickly increase the exhaust temperature and lubricating oil temperature of the compressor 10. This quickly raises the refrigerant temperature of the indoor heat exchanger 30 to a target temperature at least higher than the indoor ambient temperature. After the heating effect of the indoor heat exchanger 30 is good, the indoor fan is started to blow warm air into the room to achieve a rapid heating effect. At the same time, the increase in lubricating oil temperature improves the fluidity and lubrication protection effect of the lubricating oil, thereby improving the operational reliability of the compressor 10. During the operation phase where the refrigerant absorbs heat from the indoor return air, the indoor return air vent of air conditioner 1 can remain open, while the indoor air supply vent or indoor fan can remain closed to prevent cold air from being blown into the room.

[0085] Compared with related technologies, the air conditioner 1 provided in this application embodiment can control the first shut-off valve 61 and the bypass flow path 60 to switch to the conducting state when there is a need for rapid heating in a low-temperature environment. This allows all or at least most of the refrigerant discharged from the compressor 10 to flow through the indoor heat exchanger 30 and the throttling device 40 and then return to the compressor 10 through the bypass flow path 60. This allows the refrigerant to absorb heat from the indoor return air and increase its temperature, thereby rapidly increasing the discharge temperature and lubricating oil temperature of the compressor 10. On the one hand, by increasing the discharge temperature, the refrigerant temperature of the indoor heat exchanger 30 is quickly raised to the target temperature that can release heat to the indoor return air, achieving a rapid heating effect. On the other hand, by increasing the lubricating oil temperature, the fluidity and lubrication protection effect of the lubricating oil are improved, and the operational reliability of the compressor 10 is improved.

[0086] In some embodiments, the throttling device 40 may include a first throttling assembly 41 and a second throttling assembly 42. The first throttling assembly 41 may include a first throttling valve 411 and a first one-way valve 412 arranged in parallel, and the second throttling assembly 42 includes a second throttling valve 421 and a second one-way valve 422 arranged in parallel. The indoor heat exchanger 30, the first throttling assembly 41, the second throttling assembly 42, and the outdoor heat exchanger 50 are connected in series. When the air conditioner 1 is cooling, the first one-way valve 412 is closed and the second one-way valve 422 is open, so that the refrigerant discharged by the compressor 10 flows sequentially through the four-way valve 20, the outdoor heat exchanger 50, the second one-way valve 422, the first throttling valve 411, and the indoor heat exchanger 30 before returning to the four-way valve 20 and then entering the compressor 10. When the air conditioner 1 is in normal heating mode, the first one-way valve 412 is open while the second one-way valve 422 is closed, and the first shut-off valve 61 remains closed, so that the refrigerant discharged from the compressor 10 flows sequentially through the four-way valve 20, the indoor heat exchanger 30, the first one-way valve 412, the second throttle valve 421 and the outdoor heat exchanger 50 before returning to the four-way valve 20 and then entering the compressor 10; when the air conditioner 1 is in rapid heating mode, the first one-way valve 412 is open while the second one-way valve 422 is closed, and the first shut-off valve 61 remains open, so that the refrigerant discharged from the compressor 10 flows sequentially through the four-way valve 20, the indoor heat exchanger 30, the first one-way valve 412, the second throttle valve 421 and the bypass flow path 60 before returning to the compressor 10.

[0087] In some examples, the second throttling assembly 42 may also include a third check valve 423. The third check valve 423 and the second throttling valve 421 are connected in series, and the third check valve 423 and the second check valve 422 are connected in parallel. When the air conditioner 1 is cooling, the third check valve 423 is closed to prevent the refrigerant discharged from the outdoor heat exchanger 50 from flowing incorrectly to the bypass path 60 and the second throttling valve 421; while when the air conditioner 1 is heating, the third check valve 423 is open, allowing the refrigerant throttled by the second throttling valve 421 to flow to the outdoor heat exchanger 50.

[0088] like Figures 5 to 9As shown, in some embodiments, the air conditioner 1 may further include a flash evaporator 70, which has a liquid inlet, a liquid outlet, and an air outlet. The outdoor heat exchanger 50 may include a heat exchange main pipe 51, a distributor 52, and multiple heat exchange branch pipes 53. The distributor 52 has a manifold and multiple branch ports. The throttling device 40, the heat exchange main pipe 51, the liquid inlet, the liquid outlet, and the manifold are connected in sequence. The multiple branch ports and the multiple heat exchange branch pipes 53 are connected one-to-one. The air outlet is connected to the suction port of the compressor 10. For example, the second throttling assembly 42 has the heat exchange main pipe 51, the liquid inlet, the liquid outlet, and the manifold connected in sequence. When the air conditioner 1 is heating, the refrigerant after being throttled by the throttling device 40 flows sequentially through the heat exchange main pipe 51 and the flash evaporator 70. The flash evaporator 70 separates the refrigerant into gas and liquid. The separated liquid refrigerant can flow into the distributor 52 through the liquid outlet, and then into each heat exchange branch pipe 53 after being split by the distributor 52. This reduces the dryness of the refrigerant in each heat exchange branch pipe 53 and increases the heat transfer coefficient and heat absorption of the heat exchange branch pipe 53. The separated gaseous refrigerant can return to the compressor 10 through the gas outlet.

[0089] The type of the first shut-off valve 61 can be determined according to actual needs, and this application embodiment does not limit it. In some examples, the first shut-off valve 61 may have a first valve port, a second valve port, and a third valve port. The first valve port is connected to the connecting pipe between the throttling device 40 and the heat exchange main pipe 51, the second valve port is connected to the outlet, and the third valve port is connected to the suction port of the compressor 10; for example, the first valve port may be connected to the connecting pipe between the second throttling assembly 42 and the heat exchange main pipe 51. In this way, the opening and closing of the bypass flow path 60 and the gas-liquid separation function of the flash evaporator 70 can be controlled by the first shut-off valve 61 respectively, realizing the switching between different operating states. Specifically, when the air conditioner 1 is in normal heating mode, the first shut-off valve 61 can control the first valve port to be closed and the second and third valve ports to be open, so that the gaseous refrigerant separated by the flash evaporator 70 can return to the suction port of the compressor 10 through the second and third valve ports; when the air conditioner 1 is in rapid heating mode, the first shut-off valve 61 can control the first and third valve ports to be open, so that all or at least most of the refrigerant discharged from the compressor 10 flows through the indoor heat exchanger 30 and the throttling device 40 and then returns to the compressor 10 through the bypass flow path 60, achieving a rapid heating effect; when the air conditioner 1 is in cooling mode, the first shut-off valve 61 can control the first, second, and third valve ports to remain closed.

[0090] In some embodiments, the air conditioner 1 may have a split-type structure, including an outdoor unit 101 and an indoor unit 102. The outdoor unit 101 is provided with a compressor 10, a four-way valve 20, an outdoor heat exchanger 50, a bypass flow path 60, a first refrigerant connection terminal 1011 and a second refrigerant connection terminal 1012, and the first refrigerant connection terminal 1011, the indoor heat exchanger 30 and the second refrigerant connection terminal 1012 are connected in sequence.

[0091] In some examples, the first refrigerant connection 1011 can be a two-way shut-off valve, and the second refrigerant connection 1012 can be a three-way shut-off valve to achieve refrigerant shut-off and flow exchange between the outdoor unit 101 and the indoor unit 102.

[0092] In some examples, the air conditioner 1 may also include a first refrigerant pipe 103 and a second refrigerant pipe 104. The first refrigerant connection terminal 1011 is connected to the indoor heat exchanger 30 through the first refrigerant pipe 103, and the second refrigerant connection terminal 1012 is connected to the indoor heat exchanger 30 through the second refrigerant pipe 104.

[0093] In some examples, the first throttling component 41 can be installed in the indoor unit 102, and the second throttling component 42 can be installed in the outdoor unit 101. In this way, when heating in a low-temperature environment, the refrigerant can be throttled by the second throttling component 42 after entering the outdoor unit 101, thereby improving the heat exchange effect of the outdoor heat exchanger 50.

[0094] In some embodiments, the air conditioner 1 may be provided with an external ambient temperature sensor 81 and an external pipe temperature sensor 82. The external ambient temperature sensor 81 is used to measure the outdoor ambient temperature, and the external pipe temperature sensor 82 is disposed on the outdoor heat exchanger 50 and is used to measure the temperature of the outdoor heat exchanger 50.

[0095] In some embodiments, the air conditioner 1 may be provided with an inner ambient temperature sensor 91 and an inner pipe temperature sensor 92. The inner ambient temperature sensor 91 is located at the indoor return air vent of the air conditioner 1 and is used to measure the indoor return air temperature. The inner pipe temperature sensor 92 is located on the indoor heat exchanger 30 and is used to measure the temperature of the indoor heat exchanger 30.

[0096] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the control method of any of the above embodiments.

[0097] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of this application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0098] The above provides a detailed description of a rapid heating control method, apparatus, air conditioner, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A rapid heating control method, characterized in that, This method is used to control an air conditioner to provide rapid heating. The air conditioner includes a refrigeration cycle loop, a bypass path, and an indoor fan. The refrigeration cycle loop includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. The four-way valve is connected to the compressor's discharge port, the compressor's suction port, the indoor heat exchanger, and the outdoor heat exchanger, respectively. The indoor heat exchanger, the throttling device, and the outdoor heat exchanger are connected in series. One end of the bypass path is connected to the connecting pipe between the throttling device and the outdoor heat exchanger, and the other end is connected to the compressor's suction port. A first shut-off valve is provided on the bypass path. The rapid heating control method includes: In response to the air conditioner entering rapid heating mode, the following rapid heating operation is performed: The system controls the four-way valve to be energized, the first shut-off valve to be turned on, the throttling device to operate at its maximum opening, the compressor to increase its frequency to the rapid heating operating frequency at a rapid heating frequency increase rate, and the indoor fan to be turned off. The rapid heating frequency increase rate is greater than the conventional heating frequency increase rate, and the rapid heating operating frequency is greater than the conventional heating operating frequency. In response to the indoor heat exchanger temperature being greater than or equal to the allowable supply air temperature, the indoor fan is controlled to start at maximum speed. In response to the actual running time of the rapid heating operation reaching the preset running time, the first shut-off valve is controlled to close, the throttling device operates at the normal heating throttling opening, the compressor operates at the normal heating operating frequency, and the indoor fan operates at the normal heating speed, so that the air conditioner switches to normal heating operation.

2. The rapid heating control method according to claim 1, characterized in that, After the indoor fan is started at maximum speed and before the actual running time of the rapid heating operation reaches the preset running time, the rapid heating operation includes: Determine whether the temperature of the indoor heat exchanger is within the target temperature range, wherein the target temperature range has the allowable supply air temperature as the lower end point and the dangerous operating temperature as the upper end point; In response to determining that the temperature of the indoor heat exchanger is greater than or equal to the dangerous operating temperature, the throttling device is controlled to be reduced to the normal heating throttling opening; In response to determining that the temperature of the indoor heat exchanger is lower than the allowable supply air temperature, the indoor fan is controlled to stop and the throttling device is increased to its maximum opening. In response to determining that the temperature of the indoor heat exchanger is within the target temperature range, the indoor fan is controlled to operate at its maximum speed.

3. The rapid heating control method according to claim 1, characterized in that, Before the air conditioner enters rapid heating operation, the rapid heating control method includes: In response to the air conditioner receiving a rapid heating command, the state of the air conditioner is determined; In response to the air conditioner being in a stopped state, the air conditioner is controlled to enter rapid heating operation; In response to the air conditioner being in normal heating operation, determine whether the temperature of the indoor heat exchanger is greater than or equal to the allowable supply air temperature; In response to determining that the temperature of the indoor heat exchanger is greater than or equal to the allowable supply air temperature, the air conditioner is controlled to maintain the normal heating operation; In response to determining that the temperature of the indoor heat exchanger is lower than the allowable supply air temperature, the air conditioner is controlled to enter rapid heating operation.

4. The rapid heating control method according to claim 1, characterized in that, include: In response to the air conditioner receiving a conventional heating command while in a stopped state, determine whether the low-temperature start-up conditions are met; In response to determining that the low-temperature start-up conditions are met, the four-way valve is energized, the first shut-off valve is opened, the throttling device operates at its maximum opening, the compressor is frequency-upgraded to the rapid heating operating frequency at the rapid heating frequency upgrade rate, and the indoor fan operates at the conventional heating operating speed. Determine whether the exhaust temperature of the compressor is greater than or equal to the preset exhaust temperature; In response to determining that the exhaust temperature of the compressor is greater than or equal to a preset exhaust temperature, the first shut-off valve is controlled to close, the throttling device is controlled to operate at the normal heating throttling opening, the compressor is controlled to operate at the normal heating operating frequency, and the indoor fan is controlled to operate at the normal heating speed, so that the air conditioner switches to normal heating operation.

5. The rapid heating control method according to claim 4, characterized in that, The low-temperature start-up conditions include at least one of the following: the outdoor ambient temperature is less than or equal to the low-temperature critical temperature; the compressor shutdown time is greater than or equal to the critical shutdown time.

6. A rapid heating control device, characterized in that, For controlling an air conditioner to provide rapid heating, the air conditioner includes a refrigeration cycle loop, a bypass path, and an indoor fan. The refrigeration cycle loop includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. The four-way valve is connected to the compressor's discharge port, the compressor's suction port, the indoor heat exchanger, and the outdoor heat exchanger, respectively. The indoor heat exchanger, the throttling device, and the outdoor heat exchanger are connected in series. One end of the bypass path is connected to the connecting pipe between the throttling device and the outdoor heat exchanger, and the other end is connected to the compressor's suction port. A first shut-off valve is provided on the bypass path. The rapid heating control device includes: A rapid heating operation circuit is configured to perform the following rapid heating operation in response to the air conditioner entering rapid heating mode: The system controls the four-way valve to be energized, the first shut-off valve to be turned on, the throttling device to operate at its maximum opening, the compressor to increase its frequency to the rapid heating operating frequency at a rapid heating frequency increase rate, and the indoor fan to be turned off. The rapid heating frequency increase rate is greater than the conventional heating frequency increase rate, and the rapid heating operating frequency is greater than the conventional heating operating frequency. In response to the indoor heat exchanger temperature being greater than or equal to the allowable supply air temperature, the indoor fan is controlled to start at maximum speed. In response to the actual running time of the rapid heating operation reaching the preset running time, the first shut-off valve is controlled to close, the throttling device operates at the normal heating throttling opening, the compressor operates at the normal heating operating frequency, and the indoor fan operates at the normal heating speed, so that the air conditioner switches to normal heating operation.

7. An air conditioner, characterized in that, include: The refrigeration cycle includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. The four-way valve is connected to the discharge port of the compressor, the suction port of the compressor, the indoor heat exchanger, and the outdoor heat exchanger, respectively. The indoor heat exchanger, the throttling device, and the outdoor heat exchanger are connected in series. A bypass flow path is provided, with one end connected to the connecting pipe between the throttling device and the outdoor heat exchanger, and the other end connected to the suction port of the compressor. A first shut-off valve is provided on the bypass flow path. Indoor fan; Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the rapid heating control method as described in any one of claims 1 to 5.

8. The air conditioner according to claim 7, characterized in that, The throttling device includes a first throttling component and a second throttling component. The first throttling component includes a first throttling valve and a first one-way valve connected in parallel. The second throttling component includes a second throttling valve and a second one-way valve connected in parallel. The indoor heat exchanger, the first throttling component, the second throttling component, and the outdoor heat exchanger are connected in series. When the air conditioner is cooling, the first one-way valve is closed and the second one-way valve is open. When the air conditioner is heating, the first one-way valve is open and the second one-way valve is closed.

9. The air conditioner according to claim 8, characterized in that, The second throttling assembly also includes a third one-way valve, which is connected in series with the second throttling valve and in parallel with the second one-way valve; when the air conditioner is cooling, the third one-way valve is closed; when the air conditioner is heating, the third one-way valve is open.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the rapid heating control method according to any one of claims 1 to 5.

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