Control method of air conditioner, air conditioner, and storage medium

By installing an economizer in the air conditioner and controlling the valve to regulate the refrigerant flow, the problem of increased noise when the fresh air unit is turned on is solved, and the output capacity and temperature stability are improved without increasing the compressor frequency.

CN117053390BActive Publication Date: 2026-04-24GD MIDEA AIR CONDITIONING EQUIP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GD MIDEA AIR CONDITIONING EQUIP CO LTD
Filing Date
2023-09-27
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

When the fresh air unit of an air conditioner is turned on, in order to avoid fluctuations in indoor temperature, the compressor operating frequency is usually increased to improve the output capacity, which leads to increased operating noise.

Method used

By installing first and second economizers in the air conditioner and adjusting the refrigerant flow through control valves, the refrigerant supply volume of the economizers can be controlled according to the operating condition characteristic parameters, thereby improving the system output capacity without increasing the compressor frequency.

Benefits of technology

When fresh air is needed, the output capacity of the air conditioner should be increased while reducing operating noise to ensure indoor temperature stability and user comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a control method of an air conditioner, the air conditioner and a storage medium. The air conditioner comprises a compressor and a refrigerant main circuit. The refrigerant main circuit comprises an indoor heat exchanger, a first economizer, a second economizer and an outdoor heat exchanger connected in sequence. The indoor heat exchanger and the outdoor heat exchanger are communicated with a discharge port of the compressor and a return air port of the compressor respectively. The first economizer is connected with the return air port. The second economizer is connected with a gas supplement port of the compressor. A first control valve is used for adjusting the gas supplement of the first economizer to the return air port. A second control valve is used for adjusting the gas supplement of the second economizer to the gas supplement port. The method comprises the following steps: when a fresh air machine in a space adjusted by the air conditioner is turned on, a working condition characteristic parameter is obtained according to a current operation mode of the air conditioner; and the first control valve and the second control valve are controlled to operate according to the working condition characteristic parameter. The application aims to improve the output capacity of the air conditioner and reduce the operation noise of the air conditioner when the indoor fresh air demand exists.
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Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more particularly to a control method for an air conditioner, an air conditioner, and a storage medium. Background Technology

[0002] During the process of air conditioning indoors, the air conditioner can turn on its own fresh air fan or an external fresh air fan to introduce fresh outdoor air into the room.

[0003] Currently, when a fresh air system is turned on, in order to avoid indoor temperature fluctuations, air conditioners generally increase the compressor's operating frequency to improve the air conditioner's output capacity. However, this method can easily lead to increased noise from the air conditioner. Summary of the Invention

[0004] The main objective of this invention is to provide a control method for an air conditioner, an air conditioner, and a storage medium, which aims to increase the output capacity of the air conditioner while reducing the operating noise of the air conditioner when there is a need for fresh air indoors.

[0005] To achieve the above objectives, the present invention provides a control method for an air conditioner. The air conditioner includes a compressor and a refrigerant main circuit. The refrigerant main circuit includes an indoor heat exchanger, a first economizer, a second economizer, and an outdoor heat exchanger connected in sequence. The indoor heat exchanger and the outdoor heat exchanger are respectively connected to the exhaust port and the return port of the compressor. The first economizer is connected to the return port, and the second economizer is connected to the gas supply port of the compressor. The air conditioner further includes a first control valve and a second control valve. The first control valve is used to adjust the gas supply from the first economizer to the return port, and the second control valve is used to adjust the gas supply from the second economizer to the gas supply port. The control method for the air conditioner includes the following steps:

[0006] When the fresh air unit in the air conditioning space is turned on, the operating condition characteristic parameters are obtained according to the current operating mode of the air conditioner.

[0007] The first control valve and the second control valve are controlled to operate according to the operating condition characteristic parameters.

[0008] Optionally, the step of obtaining the operating condition characteristic parameters based on the current operating mode of the air conditioner includes:

[0009] When the operating mode is cooling mode, indoor environmental parameters and outdoor environmental parameters are acquired, and the operating condition characteristic parameters include the indoor environmental parameters and the outdoor environmental parameters.

[0010] Optionally, the step of controlling the operation of the first control valve and the second control valve according to the operating condition characteristic parameters includes:

[0011] When the outdoor environmental parameters meet the preset conditions corresponding to high load, the first control valve and the second control valve are controlled to operate according to the indoor environmental parameters.

[0012] Optionally, the outdoor environmental parameters include outdoor temperature and outdoor humidity, and the preset conditions include at least one of the following:

[0013] The outdoor temperature is greater than or equal to the first preset temperature, and the outdoor humidity is greater than or equal to the first preset humidity;

[0014] The outdoor temperature is greater than or equal to the second preset temperature, and the outdoor humidity is greater than or equal to the second preset humidity;

[0015] Wherein, the first preset temperature is lower than the second preset temperature, and the first preset humidity is higher than the second preset humidity.

[0016] Optionally, the indoor environmental parameters include the indoor temperature change state and indoor temperature value, and the step of controlling the operation of the first control valve and the second control valve according to the indoor environmental parameters includes:

[0017] When the indoor temperature is less than or equal to the set temperature of the air conditioner, both the first control valve and the second control valve are closed.

[0018] When the indoor temperature is greater than the set temperature, the first control valve and the second control valve are controlled to operate according to the change state.

[0019] Optionally, the step of controlling the operation of the first control valve and the second control valve according to the changing state includes:

[0020] When the temperature drop is greater than or equal to a first preset change value, both the first control valve and the second control valve are closed.

[0021] When the temperature drop is less than the first preset change value, one of the first control valve and the second control valve is opened.

[0022] When the temperature rises, both the first control valve and the second control valve are opened.

[0023] Optionally, after the step of controlling both the first control valve and the second control valve to open, the method further includes:

[0024] When the opening duration of the first control valve and the second control valve reaches the first preset duration, if the temperature rise or temperature drop value of the space regulated by the air conditioner is less than the second preset change value, the fresh air fan is controlled to reduce the air supply volume.

[0025] Optionally, the step of obtaining the operating condition characteristic parameters based on the current operating mode of the air conditioner includes:

[0026] When the operating mode is heating mode, outdoor environmental parameters and fresh air speed of the fresh air unit are acquired. The operating condition characteristic parameters include outdoor environmental parameters and fresh air speed of the fresh air unit.

[0027] Optionally, the outdoor environmental parameters include the outdoor ambient temperature, and the step of controlling the operation of the first control valve and the second control valve according to the operating condition characteristic parameters includes:

[0028] Determine the first speed threshold and / or the second speed threshold based on the outdoor ambient temperature;

[0029] The target control parameters are determined based on the relationship between the fresh air speed and the first speed threshold, and / or the relationship between the fresh air speed and the second speed threshold;

[0030] The first control valve and the second control valve are controlled to operate according to the target control parameters;

[0031] The first speed threshold is greater than the second speed threshold. The first speed threshold is used to select the target control parameter from the first control parameter and the second control parameter. The second speed threshold is used to select the target control parameter from the second control parameter and the third control parameter. The first control parameter includes both the first control valve and the second control valve being open. The second control parameter includes one of the first control valve and the second control valve being open. The third control parameter includes both the first control valve and the second control valve being closed.

[0032] Optionally, the step of determining the target control parameter based on the relationship between the fresh air rotation speed and the first rotation speed threshold, and / or the relationship between the fresh air rotation speed and the second rotation speed threshold includes:

[0033] When the fresh air rotation speed is greater than the first rotation speed threshold, the first control parameter is determined to be the target control parameter;

[0034] When the fresh air speed is less than or equal to the first speed threshold and / or the fresh air speed is greater than or equal to the second speed threshold, the second control parameter is determined to be the target control parameter;

[0035] When the fresh air rotation speed is less than the second rotation speed threshold, the third control parameter is determined to be the target control parameter.

[0036] Optionally, the first speed threshold and / or the second speed threshold are positively correlated with the outdoor ambient temperature.

[0037] Optionally, the step of determining the first speed threshold and / or the second speed threshold based on the outdoor ambient temperature includes:

[0038] When the outdoor ambient temperature is less than or equal to the first preset ambient temperature, the first preset rotation speed is determined to be the first rotation speed threshold.

[0039] When the outdoor ambient temperature is greater than the first preset ambient temperature and the outdoor ambient temperature is less than or equal to the second preset ambient temperature, the second preset speed is determined to be the first speed threshold, and the third preset speed is determined to be the second speed threshold.

[0040] When the outdoor ambient temperature is greater than the second preset ambient temperature, the fourth preset rotation speed is determined to be the second rotation speed threshold.

[0041] Wherein, the first preset ambient temperature is lower than the second preset ambient temperature, the first preset rotation speed is lower than the second preset rotation speed, and the third preset rotation speed is lower than the fourth preset rotation speed.

[0042] Optionally, after the step of controlling the operation of the first control valve and the second control valve according to the target control parameters, the method further includes:

[0043] When the first control valve and the second control valve operate at the first control parameter for a period of time that reaches the second preset duration, if the temperature drop or temperature rise of the space regulated by the air conditioner is less than the third preset change value, then the fresh air fan is controlled to reduce the air supply volume.

[0044] Furthermore, to achieve the above objectives, this application also proposes an air conditioner, which includes a control device, a compressor, and a refrigerant main circuit. The refrigerant main circuit includes an indoor heat exchanger, a first economizer, a second economizer, and an outdoor heat exchanger connected in sequence. The indoor heat exchanger and the outdoor heat exchanger are respectively connected to the exhaust port and the return port of the compressor. The first economizer is connected to the return port, and the second economizer is connected to the gas supply port. The air conditioner also includes a first control valve and a second control valve. The first control valve is used to adjust the gas supply from the first economizer to the return port, and the second control valve is used to adjust the gas supply from the second economizer to the gas supply port.

[0045] Both the first control valve and the second control valve are connected to the control device, which includes a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor. When the air conditioner control program is executed by the processor, it implements the steps of the air conditioner control method as described above.

[0046] In addition, to achieve the above objectives, this application also proposes a storage medium storing a control program for an air conditioner, which, when executed by a processor, implements the steps of the control method for the air conditioner as described in any of the preceding claims.

[0047] This invention proposes a control method for an air conditioner. The air conditioner's refrigerant main circuit includes a first economizer and a second economizer. The first economizer is connected to the compressor's return air port, and the second economizer is connected to the compressor's make-up air port. When the fresh air unit in the air conditioner's regulated space is turned on, the method obtains operating condition characteristic parameters based on the air conditioner's current operating mode and controls the operation of the first and second control valves. This allows the first and second economizers to adapt to changes in indoor space load characterized by operating condition characteristic parameters during fresh air introduction, replenishing the compressor's return air port and / or make-up air port to increase enthalpy. The compressor can improve system output capacity without frequency increase, and compressor operating noise can be reduced. Thus, when there is a demand for fresh air indoors, the air conditioner's output capacity is increased while reducing operating noise. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the system structure of an embodiment of the air conditioner of the present invention;

[0049] Figure 2 This is a schematic diagram of the hardware structure involved in the operation of an embodiment of the air conditioner of the present invention;

[0050] Figure 3 This is a flowchart illustrating an embodiment of the control method for an air conditioner according to the present invention;

[0051] Figure 4 This is a flowchart illustrating another embodiment of the control method for an air conditioner according to the present invention;

[0052] Figure 5 This is a flowchart illustrating another embodiment of the control method for the air conditioner of the present invention.

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0055] This invention provides an air conditioner. The air conditioner may include any type of air conditioner such as a wall-mounted air conditioner, window air conditioner, ceiling-mounted air conditioner, or floor-standing air conditioner.

[0056] In this embodiment of the invention, reference is made to Figure 1 and Figure 2The air conditioner includes a control device 100, a compressor 1, and a refrigerant main circuit. The refrigerant main circuit includes an indoor heat exchanger 2, a first economizer 4, a second economizer 5, and an outdoor heat exchanger 7 connected in sequence. The indoor heat exchanger 2 and the outdoor heat exchanger 7 are respectively connected to the exhaust port and the return port of the compressor 1. The first economizer 4 is connected to the return port, and the second economizer 5 is connected to the gas supply port. The air conditioner also includes a first control valve 41 and a second control valve 51. The first control valve 41 is used to regulate the gas supply from the first economizer 4 to the return port, and the second control valve 51 is used to regulate the gas supply from the second economizer 5 to the gas supply port. The compressor 1, the first control valve 41, and the second control valve 51 are all connected to the control device 100.

[0057] The return air port, the replenishment air port, and the exhaust air port of compressor 1 are connected to the low-pressure chamber, the medium-pressure chamber, and the high-pressure chamber of compressor 1 in sequence.

[0058] The first economizer 4 includes a first main circuit and a first enthalpy-increasing pipe. The second economizer 5 includes a second main circuit and a second enthalpy-increasing pipe. In the refrigerant main circuit, the indoor heat exchanger 2, the first main circuit, the second main circuit, and the outdoor heat exchanger 7 are connected in sequence. The main circuit between the indoor heat exchanger 2 and the outdoor heat exchanger 7 is connected to the inlet of the first enthalpy-increasing pipe, and the main circuit between the indoor heat exchanger 2 and the outdoor heat exchanger 7 is connected to the inlet of the second enthalpy-increasing pipe. Both the inlet of the first enthalpy-increasing pipe and the inlet of the second enthalpy-increasing pipe are equipped with throttling devices. When the indoor heat exchanger 2 is in a condensed state, a portion of the refrigerant flowing out can flow sequentially through the first main circuit and the second main circuit before flowing into the outdoor heat exchanger 7. Another portion of the refrigerant flowing out can be throttled by the throttling device before flowing into the first enthalpy-increasing pipe. A portion of the refrigerant flowing out of the first main circuit can be throttled by the throttling device before flowing into the second enthalpy-increasing pipe. When the outdoor heat exchanger 7 is in a condensing state, a portion of the refrigerant flowing out can flow sequentially through the second main line and the first main line before flowing into the indoor heat exchanger 2, while the other portion of the refrigerant flowing out can flow into the second enthalpy-increasing pipeline after being throttled by the throttling device.

[0059] In this embodiment, both the first control valve 41 and the second control valve 51 are solenoid valves. In other embodiments, the first control valve 41 and / or the second control valve 51 may be electronic expansion valves, etc.

[0060] In one implementation of this embodiment, the refrigerant main circuit further includes a reversing assembly 8 (e.g., a four-way valve), a first throttling component 3, and a second throttling component 6. The indoor heat exchanger 2, the first throttling component 3, the first economizer 4, the second economizer 5, the second throttling component 6, and the outdoor heat exchanger 7 are connected in sequence. The exhaust port, the return port, the indoor heat exchanger 2, and the outdoor heat exchanger 7 are all connected to the reversing assembly 8.

[0061] The commutation assembly 8 has a first operating state and a second operating state:

[0062] When the reversing assembly 8 is running in the first operating state, the exhaust port of the compressor 1 is connected to the indoor heat exchanger 2, and the return port of the compressor 1 is connected to the outdoor heat exchanger 7. The refrigerant discharged by the compressor 1 flows sequentially through the indoor heat exchanger 2, the first throttling component 3, the first economizer 4, the second economizer 5, the second throttling component 6, and the outdoor heat exchanger 7 before returning to the compressor 1. The first heat exchanger is in the condensing state, the second heat exchanger is in the evaporating state, and the air conditioner is in the heating mode.

[0063] When the reversing assembly 8 is running in the second operating state, the exhaust port of the compressor 1 is connected to the outdoor heat exchanger 7, and the return port of the compressor 1 is connected to the indoor heat exchanger 2. The refrigerant discharged by the compressor 1 flows sequentially through the outdoor heat exchanger 7, the second throttling component 6, the second economizer 5, the first economizer 4, the first throttling component 3, and the indoor heat exchanger 2 before returning to the compressor 1. The first heat exchanger is in the evaporation state, the second heat exchanger is in the condensation state, and the air conditioner is in the cooling mode.

[0064] In another implementation, the refrigerant main circuit also includes a second throttling component 6. The exhaust port of compressor 1, indoor heat exchanger 2, first economizer 4, second economizer 5, second throttling component 6, outdoor heat exchanger 7, and return port of compressor 1 are connected in sequence. When compressor 1 is turned on, the first heat exchanger is in a condensing state, the second heat exchanger is in an evaporating state, and the air conditioner is in heating mode.

[0065] In another implementation, the refrigerant main circuit also includes a first throttling component 3, the exhaust port of compressor 1, outdoor heat exchanger 7, second economizer 5, first economizer 4, first throttling component 3, indoor heat exchanger 2 and return port of compressor 1 are connected in sequence. When compressor 1 is turned on, the first heat exchanger is in the evaporation state and the second heat exchanger is in the condensation state, and the air conditioner is in the cooling mode.

[0066] During the operation of the air conditioner in cooling or heating mode, when the first control valve 41 is open, the first economizer 4 can replenish air to the return air port, and when the first control valve 41 is closed, the first economizer 4 stops replenishing air to the return air port; when the second control valve 51 is open, the second economizer 5 can replenish air to the replenishment air port, and when the second control valve 51 is closed, the second economizer 5 stops replenishing air to the replenishment air port.

[0067] Furthermore, in this embodiment, referring to Figure 1 and Figure 2 The air conditioner also includes a fresh air unit 9. The fresh air unit 9 is connected to the control device 100. The fresh air unit 9 is located in the fresh air duct of the air conditioner, one end of the fresh air duct is connected to the outdoor environment, and the other end of the fresh air unit is connected to the indoor environment. The duct where the indoor heat exchanger 2 is located can be connected to the fresh air duct, or the duct where the indoor heat exchanger 2 is located can be isolated from the fresh air duct.

[0068] In other embodiments, the fresh air unit 9 may not be installed inside the air conditioner; instead, the fresh air unit 9 is an independent device outside the air conditioner.

[0069] Furthermore, in this embodiment, referring to Figure 2 The air conditioner may also include an environmental detection module 01 connected to the control device 100. The environmental detection module 01 is located in the indoor environment and / or outdoor environment where the air conditioner is located, and is used to detect indoor environmental parameters and / or outdoor environmental parameters. The indoor environmental parameters include indoor temperature and / or indoor humidity, and the outdoor environmental parameters include outdoor temperature and / or outdoor humidity.

[0070] In this embodiment of the invention, reference is made to Figure 2 The control device 100 of the air conditioner includes: a processor 1001, such as a CPU, a memory 1002, and a timer 1003. These components communicate with each other via a communication bus. The memory 1002 can be a high-speed RAM or a stable, non-volatile memory, such as a disk drive. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0071] Those skilled in the art will understand that Figure 2 The device structure shown does not constitute a limitation on the device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0072] like Figure 2 As shown, the memory 1002, which serves as a computer storage medium, may include a control program for an air conditioner.

[0073] exist Figure 2 In the device shown, the processor 1001 can be used to call the control program of the air conditioner stored in the memory 1002 and execute the relevant steps of the control method of the air conditioner in the following embodiments.

[0074] This invention also provides a control method for an air conditioner, applied to the aforementioned air conditioner.

[0075] Reference Figure 3 This application proposes an embodiment of a control method for an air conditioner. In this embodiment, the control method for the air conditioner includes:

[0076] Step S10: When the fresh air unit in the air conditioning space is turned on, the operating condition characteristic parameters are obtained according to the current operating mode of the air conditioner.

[0077] In this embodiment, the operating mode includes either a cooling mode or a heating mode. In other embodiments, the operating mode may also include other types of operating modes for the air conditioner, such as a dehumidification mode.

[0078] Different operating modes correspond to different operating condition characteristic parameters. The operating condition characteristic parameters corresponding to the operating mode include, but are not limited to, at least one of the following parameters: indoor environmental parameters (e.g., indoor humidity, indoor temperature, etc.), outdoor environmental parameters (e.g., outdoor temperature, outdoor humidity, etc.), fresh air unit operating parameters (e.g., fresh air unit speed, fresh air inlet opening degree), air conditioner operating parameters (e.g., compressor frequency, indoor fan speed, throttling component opening degree, etc.), etc.

[0079] An air conditioner can be an air conditioner that operates in cooling mode only, an air conditioner that operates in heating mode only, or an air conditioner that can switch between cooling and heating modes.

[0080] Step S20: Control the operation of the first control valve and the second control valve according to the operating condition characteristic parameters.

[0081] Different operating condition characteristic parameters correspond to different control parameters for the first and second control valves. Different control parameters for the first control valve result in different air supply amounts from the first economizer to the return air port, and different control parameters for the second control valve result in different air supply amounts from the second economizer to the replenishment air port. Specifically, when the air supply amounts from the first economizer to the return air port and the second economizer to the replenishment air port are the same, the increase in system output capacity corresponding to the first economizer is greater than the increase in system output capacity corresponding to the second economizer.

[0082] In one implementation, target control parameters for the first and second control valves are determined based on operating condition characteristic parameters. These target control parameters include a first opening / closing parameter for the first control valve and a second opening / closing parameter for the second control valve. The first and second control valves are then controlled to open or close based on these target control parameters. In this embodiment, the target control parameters include one of a first parameter, a second parameter, a third parameter, and a fourth parameter. The first parameter is that the first control valve is open and the second control valve is closed; the second parameter is that the first control valve is closed and the second control valve is open; the third parameter is that both the first and second control valves are open; and the fourth parameter is that both the first and second control valves are closed.

[0083] In another implementation, target control parameters for the first control valve and the second control valve are determined based on operating condition characteristic parameters. The target control parameters include a first target opening degree of the first control valve and a second target opening degree of the second control valve. The first control valve is controlled to open at the first target opening degree, and the second control valve is controlled to open at the second target opening degree.

[0084] This invention proposes a control method for an air conditioner. When the fresh air unit in the air-conditioned space is turned on, the method obtains the operating condition characteristic parameters based on the current operating mode of the air conditioner and controls the operation of the first control valve and the second control valve. This enables the first and second economizers to adapt to the changes in indoor space load characterized by the operating condition characteristic parameters when fresh air is introduced, and to replenish the enthalpy of the compressor's return air port and / or replenishment air port. The compressor can improve the system output capacity without increasing its frequency, and the compressor operating noise can be reduced. Thus, when there is a demand for fresh air in the room, the air conditioner's output capacity can be increased while the air conditioner's operating noise is reduced.

[0085] Furthermore, based on the above embodiments, another embodiment of the control method for the air conditioner of this application is proposed. In this embodiment, reference is made to... Figure 4 The step of obtaining operating condition characteristic parameters based on the current operating mode of the air conditioner includes:

[0086] Step S11: When the operating mode is cooling mode, acquire indoor environmental parameters and outdoor environmental parameters. The operating condition characteristic parameters include the indoor environmental parameters and the outdoor environmental parameters.

[0087] Indoor environmental parameters include, but are not limited to: indoor temperature value, indoor temperature change value, indoor temperature change direction, indoor humidity value, indoor humidity change value, indoor humidity change direction, etc.

[0088] Outdoor environmental parameters include, but are not limited to: outdoor temperature value, outdoor temperature change value, outdoor temperature change direction, outdoor humidity value, outdoor humidity change value, outdoor humidity change direction, etc.

[0089] Step S20 includes:

[0090] Step S21: When the outdoor environmental parameters meet the preset conditions corresponding to high load, control the first control valve and the second control valve to operate according to the indoor environmental parameters.

[0091] When outdoor environmental parameters meet preset conditions, it indicates that the introduction of fresh air will cause significant fluctuations in indoor temperature. Preset conditions may include the target range and quantitative relationships of the outdoor environmental parameters.

[0092] In this embodiment, the outdoor environmental parameters include outdoor temperature and outdoor humidity, and the preset conditions include at least one of the following conditions:

[0093] The outdoor temperature is greater than or equal to the first preset temperature, and the outdoor humidity is greater than or equal to the first preset humidity;

[0094] The outdoor temperature is greater than or equal to the second preset temperature, and the outdoor humidity is greater than or equal to the second preset humidity;

[0095] Wherein, the first preset temperature is lower than the second preset temperature, and the first preset humidity is higher than the second preset humidity.

[0096] For example, the first preset temperature is 32℃, the second preset temperature is 40℃, the first preset humidity is 80%, and the second preset humidity is 50%.

[0097] In one implementation, the operation of the first and second control valves can be controlled based on the parameter range of the indoor environmental parameters. In another implementation, the operation of the first and second control valves can be controlled based on the relationship between the indoor environmental parameters and the set environmental parameters.

[0098] The correspondence between the control parameters of the first control valve and the control parameters of the second control valve and the indoor environmental parameters can be a pre-set fixed relationship or a relationship determined according to the actual operation of the air conditioner. For example, the target correspondence between the indoor environmental parameters and the control parameters of the first control valve and the second control valve can be determined based on the air outlet temperature of the air conditioner, the coil temperature of the indoor heat exchanger, and the deviation angle of the air outlet direction of the air conditioner relative to the air outlet direction of the fresh air unit. Based on this target correspondence, the control parameters of the first control valve and the second control valve are determined to control the operation of the first control valve and the second control valve.

[0099] In this embodiment, the indoor and outdoor environmental parameters during the air conditioner's cooling operation comprehensively reflect the impact of outdoor hot air introduction on indoor temperature fluctuations. Therefore, the first and second control valves are controlled by combining the indoor and outdoor environmental parameters to ensure that the system output capacity is increased sufficiently to effectively guarantee the stability of the indoor temperature during the fresh air introduction process, thereby further improving the comfort of indoor users during the fresh air introduction process. Specifically, when the outdoor environmental parameters meet the preset conditions corresponding to high load, the operation of the first and second control valves is adjusted based on the indoor environmental parameters to ensure that even when there is a risk of temperature fluctuations in the indoor environment during the fresh air introduction process, the increased system output capacity can accurately meet the user comfort requirements.

[0100] In other embodiments, the first target opening degree of the first control valve and the second target opening degree of the second control valve can be calculated by combining outdoor environmental parameters and indoor environmental parameters, and the first control valve can be controlled to operate at the first target opening degree, and the second control valve can be controlled to operate at the second target opening degree.

[0101] Furthermore, in this embodiment, the indoor environmental parameters include the indoor temperature change state and the indoor temperature value. The step of controlling the operation of the first control valve and the second control valve according to the indoor environmental parameters includes: when the indoor temperature value is less than or equal to the set temperature of the air conditioner, controlling both the first control valve and the second control valve to close; when the indoor temperature value is greater than the set temperature, controlling the first control valve and the second control valve to operate according to the change state.

[0102] The change state can include the direction of change, and may also include the magnitude of change.

[0103] Set the temperature to the target temperature that the indoor environment needs to achieve.

[0104] In this embodiment, the target control parameters of the first control valve and the second control valve are determined according to the changing state. The target control parameters include the opening and closing control parameters or target opening degree corresponding to the first control valve and the second control valve, respectively.

[0105] Different states of change represent different risks of indoor temperature fluctuations, and therefore the control parameters of the first and second control valves are different.

[0106] In this embodiment, when the indoor temperature is less than or equal to the set temperature, it indicates that the indoor temperature can be maintained at a comfortable level for the user during the fresh air introduction process. At this time, both the first and second control valves are closed, and both the first and second economizers stop supplying gas to the compressor to increase enthalpy, ensuring sufficient refrigerant participates in the normal refrigerant cycle. This ensures indoor temperature comfort during the fresh air introduction process while improving the air conditioner's energy efficiency. When the indoor temperature is greater than the set temperature, the indoor temperature may deviate from the user's comfortable level during the fresh air introduction process. In this case, the operation of the first and second control valves is adjusted according to the changing indoor temperature, ensuring that the gas supply and enthalpy increase effect of the first and second economizers on the compressor's capacity can be precisely controlled to adapt to changes in indoor temperature, thus ensuring indoor temperature comfort during the fresh air introduction process while improving the air conditioner's energy efficiency.

[0107] In other embodiments, the operation of the first control valve and the second control valve can also be controlled based on the temperature difference between the indoor temperature and the set temperature.

[0108] Furthermore, in this embodiment, the step of controlling the operation of the first control valve and the second control valve according to the changing state includes:

[0109] When the temperature drop is greater than or equal to a first preset change value, both the first control valve and the second control valve are closed.

[0110] When the temperature drop is less than the first preset change value, one of the first control valve and the second control valve is opened.

[0111] When the temperature rises, both the first control valve and the second control valve are opened.

[0112] When both the first and second control valves are closed, both the first and second economizers stop supplying gas to the compressor to increase enthalpy.

[0113] In this embodiment, when the first control valve is open, the increase in system output capacity due to the gas replenishment and enthalpy enhancement effect of the first economizer is greater than the increase in system output capacity due to the gas replenishment and enthalpy enhancement effect of the second economizer when the second control valve is open. Therefore, when the temperature drop is less than a first preset value, the first control valve is opened and the second control valve is closed, allowing the first economizer to be opened alone to replenish the compressor's enthalpy, thereby ensuring the compressor's output capacity is maximized to guarantee indoor temperature comfort during the fresh air introduction process.

[0114] When both the first control valve and the second control valve are open, both the first economizer and the second economizer are open to provide two-stage gas injection and enthalpy enhancement to the compressor.

[0115] Specifically, the system's output capacity is less when both the first and second control valves are closed than when one of the first and second control valves is open, and the system's output capacity is less when both the first and second control valves are open than when both are open.

[0116] In this embodiment, when the indoor temperature drops significantly during the fresh air introduction process, it indicates that the indoor temperature maintains a high cooling efficiency, and the indoor temperature changes rapidly towards the temperature required for user comfort. At this time, both the first and second economizers are turned off to ensure indoor cooling efficiency while improving the air conditioner's energy efficiency. When the indoor temperature drops only slightly during the fresh air introduction process, it indicates that the indoor cooling efficiency is poor, and the user's comfortable temperature cannot be reached for a long time. At this time, one of the first and second economizers is turned on to increase the system's output capacity by supplementing the compressor with gas and increasing enthalpy, effectively improving indoor cooling efficiency and ensuring indoor comfort during the fresh air introduction process. When the indoor temperature rises during the fresh air introduction process, it indicates that the indoor temperature is gradually deviating from user comfort. At this time, both the first and second economizers are turned on, and the compressor is supplemented with gas and increased enthalpy to significantly increase the system's output capacity, thereby ensuring that the air conditioner can output a sufficient amount of cooling capacity to compensate for the load brought by the fresh air during the fresh air introduction process, effectively improving indoor temperature comfort.

[0117] Furthermore, in this embodiment, after the step of controlling both the first control valve and the second control valve to open, the method further includes: when the opening duration of the first control valve and the second control valve reaches a first preset duration, if the temperature rise or temperature drop value of the air conditioner regulating space is less than a second preset change value, then the fresh air unit is controlled to reduce the air supply volume.

[0118] Reducing the air supply volume of a fresh air system can be achieved by lowering its rotation speed or reducing the opening of the fresh air inlet.

[0119] In this embodiment, the speed of the fresh air unit is reduced. The speed adjustment value can be a preset fixed value or a value determined based on the actual status parameters of the air conditioner. For example, the speed adjustment value can be determined based on the current indoor temperature change, the air outlet temperature of the air conditioner, the coil temperature of the indoor heat exchanger, and the deviation angle of the air outlet direction of the air conditioner relative to the air outlet direction of the fresh air unit.

[0120] In this embodiment, after both the first and second economizers replenish the compressor with gas to increase enthalpy in the cooling mode, if the temperature in the space regulated by the air conditioner rises or falls very little, controlling the fresh air unit to reduce the air supply can effectively ensure indoor temperature comfort.

[0121] Furthermore, based on any of the above embodiments, another embodiment of the control method for the air conditioner of this application is proposed. In this embodiment, reference is made to... Figure 5 The step of obtaining operating condition characteristic parameters based on the current operating mode of the air conditioner includes:

[0122] Step S12: When the operating mode is heating mode, obtain the outdoor environmental parameters and the fresh air speed of the fresh air unit. The operating condition characteristic parameters include the outdoor environmental parameters and the fresh air speed of the fresh air unit.

[0123] Outdoor environmental parameters include, but are not limited to: outdoor temperature value, outdoor temperature change value, outdoor temperature change direction, outdoor humidity value, outdoor humidity change value, outdoor humidity change direction, etc.

[0124] In this embodiment, during the operation of the heating mode, the outdoor environmental parameters and the fresh air speed can accurately reflect the impact of the outdoor cold air being introduced into the room on the indoor temperature and the effect of the air replenishment and enthalpy increase effect on the economizer. Therefore, by combining the outdoor environmental parameters and the fresh air speed to regulate the operation of the first control valve and the second control valve, it can be effectively ensured that the output capacity of the air conditioner can be precisely matched with the indoor temperature comfort requirements during the fresh air introduction process, thereby further improving the energy efficiency of the air conditioner while ensuring indoor temperature comfort.

[0125] Furthermore, in this embodiment, referring to Figure 5The outdoor environmental parameters include the outdoor ambient temperature, and the step of controlling the operation of the first control valve and the second control valve according to the operating condition characteristic parameters includes:

[0126] Step S22: Determine a first speed threshold and / or a second speed threshold based on the outdoor ambient temperature. The first speed threshold is greater than the second speed threshold. The first speed threshold is used to select target control parameters for the first control valve and the second control valve from the first control parameters and the second control parameters. The second speed threshold is used to select target control parameters for the first control valve and the second control valve from the second control parameters and the third control parameters. The first control parameter includes both the first control valve and the second control valve being open. The second control parameter includes one of the first control valve and the second control valve being open. The third control parameter includes both the first control valve and the second control valve being closed.

[0127] Different outdoor ambient temperatures correspond to different first speed thresholds and / or second speed thresholds. The first speed threshold and / or second speed threshold are positively correlated with the outdoor ambient temperature.

[0128] In this embodiment, the first speed threshold and / or the second speed threshold are positively correlated with the outdoor ambient temperature. Based on this, when the impact of fresh air introduction on indoor temperature fluctuations during heating operation is minimal, the enthalpy boost from the economizer to the compressor can be reduced, thereby ensuring system operational stability, maintaining indoor comfort, and improving system energy efficiency.

[0129] The correspondence between outdoor ambient temperature and the first and / or second speed thresholds can be preset, and this correspondence may include mapping relationships, calculation relationships, etc. The first and / or second speed thresholds can be calculated by substituting the outdoor ambient temperature into a preset formula. Alternatively, the first and / or second speed thresholds can also be obtained by querying a mapping table using the outdoor ambient temperature.

[0130] The second control parameter here includes the first control valve being open and the second control valve being closed. In other embodiments, the second control parameter includes the first control valve being closed and the second control valve being open.

[0131] Step S23: Determine the target control parameter based on the relationship between the fresh air speed and the first speed threshold, and / or the relationship between the fresh air speed and the second speed threshold;

[0132] The relationships here can include size relationships or quantity relationships (such as differences or ratios).

[0133] When a first speed threshold and a second speed threshold exist, based on the relationship between the fresh air speed and the first speed threshold, one of the first control parameters and the second control parameter can be determined as the first alternative control parameter. Based on the relationship between the fresh air speed and the second speed threshold, one of the second control parameter and the third control parameter can be determined as the second alternative control parameter. The target control parameter is determined based on the first alternative control parameter and the second alternative control parameter.

[0134] When a first speed threshold exists and a second speed threshold does not exist, the target control parameter can be determined from the first control parameter and the second control parameter based on the relationship between the fresh air speed and the first speed threshold.

[0135] When there is no first speed threshold but there is a second speed threshold, the target control parameter is determined based on the relationship between the fresh air speed and the second speed threshold, either the second control parameter or the third control parameter.

[0136] Step S24: Control the first control valve and the second control valve to operate according to the target control parameters.

[0137] In this embodiment, the speed threshold for the control parameters used to select the control valve is determined by the outdoor ambient temperature. Then, based on the relationship between the fresh air speed and the determined speed threshold, it is determined whether to use the first economizer and / or the second economizer to supplement gas and increase enthalpy for the compressor, thereby ensuring the accuracy of the air conditioner's output capacity regulation during the heating process and further ensuring that the indoor temperature comfort is met.

[0138] In other embodiments, the first target opening degree of the first control valve and the second target opening degree of the second control valve can also be calculated directly from the outdoor ambient temperature and the fresh air rotation speed.

[0139] Furthermore, in this embodiment, the step of determining the target control parameter based on the relationship between the fresh air rotation speed and the first rotation speed threshold, and / or the relationship between the fresh air rotation speed and the second rotation speed threshold includes: when the fresh air rotation speed is greater than the first rotation speed threshold, determining the first control parameter as the target control parameter; when the fresh air rotation speed is less than or equal to the first rotation speed threshold, and / or the fresh air rotation speed is greater than or equal to the second rotation speed threshold, determining the second control parameter as the target control parameter; when the fresh air rotation speed is less than the second rotation speed threshold, determining the third control parameter as the target control parameter.

[0140] When a first speed threshold and a second speed threshold exist, if the fresh air speed is greater than the first speed threshold, the first control parameter is determined to be the target control parameter; if the fresh air speed is less than or equal to the first speed threshold and the fresh air speed is greater than or equal to the second speed threshold, the second control parameter is determined to be the target control parameter; if the fresh air speed is less than the second speed threshold, the third control parameter is determined to be the target control parameter.

[0141] When a first speed threshold exists and a second speed threshold does not exist, if the fresh air speed is greater than the first speed threshold, the first control parameter is determined to be the target control parameter; if the fresh air speed is less than or equal to the first speed threshold, the second control parameter is determined to be the target control parameter.

[0142] When there is no first speed threshold but there is a second speed threshold, if the fresh air speed is greater than or equal to the second speed threshold, the second control parameter is determined as the target control parameter; if the fresh air speed is less than the second speed threshold, the third control parameter is determined as the target control parameter.

[0143] In this embodiment, the above method can be used to make the output capacity of the air conditioner increase with the increase of the fresh air speed and decrease with the decrease of the fresh air speed, thereby helping to ensure indoor heating comfort while improving system energy efficiency.

[0144] Furthermore, in this embodiment, the step of determining the first speed threshold and / or the second speed threshold based on the outdoor ambient temperature includes: when the outdoor ambient temperature is less than or equal to a first preset ambient temperature, determining a first preset speed as the first speed threshold; when the outdoor ambient temperature is greater than the first preset ambient temperature and the outdoor ambient temperature is less than or equal to a second preset ambient temperature, determining a second preset speed as the first speed threshold and determining a third preset speed as the second speed threshold; when the outdoor ambient temperature is greater than the second preset ambient temperature, determining a fourth preset speed as the second speed threshold; wherein, the first preset ambient temperature is less than the second preset ambient temperature, the first preset speed is less than the second preset speed, and the third preset speed is less than the fourth preset speed.

[0145] The first and second preset ambient temperatures can be preset ambient temperatures or temperatures determined based on the actual operation of the air conditioner. For example, the first and second preset ambient temperatures can be determined based on the air outlet temperature of the air conditioner, the coil temperature of the indoor heat exchanger, and the deviation angle of the air outlet direction of the air conditioner relative to the air outlet direction of the fresh air unit.

[0146] In this embodiment, the second preset ambient temperature is 0 degrees Celsius.

[0147] In this embodiment, when the outdoor temperature is too low, a speed threshold is determined, including a first speed threshold, to ensure that the system has sufficient output capacity to guarantee indoor temperature comfort. When the outdoor temperature is high, a speed threshold is determined, including a second speed threshold, to ensure that when the system output capacity is sufficient, unnecessary operation of the economizer is reduced, thereby effectively improving system energy efficiency. When the outdoor temperature is somewhat low, a speed threshold is determined, including both the first and second speed thresholds, to ensure that the system output capacity can adapt to the impact of fresh air on the indoor environment. Based on this, indoor comfort and system energy efficiency can be effectively balanced during the heating process.

[0148] To better understand the solution of this embodiment, the solution of this embodiment is described in conjunction with the following table:

[0149]

[0150] Here, -7℃ is the first preset ambient temperature, and 0℃ is the second preset ambient temperature. Opening the second-stage economizer means the second control valve opens; opening the first-stage economizer means the first control valve opens. The first preset speed is the threshold between low and medium wind speeds; the second preset speed is the threshold between ultra-strong and high wind speeds; the third preset speed is the threshold between low and medium wind speeds; and the fourth preset speed is the threshold between ultra-strong and high wind speeds.

[0151] Furthermore, in this embodiment, after the step of controlling the operation of the first control valve and the second control valve according to the target control parameters, the method further includes:

[0152] When the first control valve and the second control valve operate with the first control parameter for a period of time that reaches the second preset duration, if the temperature drop or temperature rise of the space regulated by the air conditioner is less than the third preset change value, then the fresh air fan is controlled to reduce the air supply volume.

[0153] Reducing the air supply volume of a fresh air system can be achieved by lowering its rotation speed or reducing the opening of the fresh air inlet.

[0154] In this embodiment, the speed of the fresh air unit is reduced. The speed adjustment value can be a preset fixed value or a value determined based on the actual status parameters of the air conditioner. For example, the speed adjustment value can be determined based on the current indoor temperature change, the air outlet temperature of the air conditioner, the coil temperature of the indoor heat exchanger, and the deviation angle of the air outlet direction of the air conditioner relative to the air outlet direction of the fresh air unit.

[0155] In this embodiment, after both the first and second economizers replenish the compressor with gas to increase enthalpy in the heating mode, if the temperature in the space regulated by the air conditioner drops or rises only slightly, controlling the fresh air unit to reduce the air supply can effectively ensure indoor temperature comfort.

[0156] Furthermore, this embodiment of the invention also proposes a storage medium storing a control program for an air conditioner. When the control program for the air conditioner is executed by a processor, it implements the relevant steps of any embodiment of the control method for the air conditioner described above.

[0157] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0158] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0159] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0160] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes a compressor and a refrigerant main circuit. The refrigerant main circuit includes an indoor heat exchanger, a first economizer, a second economizer, and an outdoor heat exchanger connected in sequence. The indoor heat exchanger and the outdoor heat exchanger are respectively connected to the compressor's exhaust port and return port. The first economizer is connected to the return port, and the second economizer is connected to the compressor's gas supply port. The air conditioner also includes a first control valve and a second control valve. The first control valve is used to regulate the gas supply from the first economizer to the return port, and the second control valve is used to regulate the gas supply from the second economizer to the gas supply port. The control method of the air conditioner includes the following steps: When the fresh air unit in the air conditioning space is turned on, the operating condition characteristic parameters are obtained according to the current operating mode of the air conditioner. When the operating mode is heating mode, the operating condition characteristic parameters include the outdoor ambient temperature and the fresh air speed of the fresh air unit. The operation of the first control valve and the second control valve is controlled according to the operating condition characteristic parameters; The step of controlling the operation of the first control valve and the second control valve according to the operating condition characteristic parameters includes: Determine the first speed threshold and / or the second speed threshold based on the outdoor ambient temperature; The target control parameters are determined based on the relationship between the fresh air speed and the first speed threshold, and / or the relationship between the fresh air speed and the second speed threshold; The first control valve and the second control valve are controlled to operate according to the target control parameters; The first speed threshold is greater than the second speed threshold. The first speed threshold is used to select the target control parameter from the first control parameter and the second control parameter. The second speed threshold is used to select the target control parameter from the second control parameter and the third control parameter. The first control parameter includes both the first control valve and the second control valve being open. The second control parameter includes one of the first control valve and the second control valve being open. The third control parameter includes both the first control valve and the second control valve being closed.

2. The control method for an air conditioner as described in claim 1, characterized in that, The step of obtaining the operating condition characteristic parameters based on the current operating mode of the air conditioner includes: When the operating mode is cooling mode, indoor environmental parameters and outdoor environmental parameters are acquired, and the operating condition characteristic parameters include the indoor environmental parameters and the outdoor environmental parameters.

3. The control method for an air conditioner as described in claim 2, characterized in that, The step of controlling the operation of the first control valve and the second control valve according to the operating condition characteristic parameters includes: When the outdoor environmental parameters meet the preset conditions corresponding to high load, the first control valve and the second control valve are controlled to operate according to the indoor environmental parameters.

4. The control method for an air conditioner as described in claim 3, characterized in that, The outdoor environmental parameters include outdoor temperature and outdoor humidity, and the preset conditions include at least one of the following: The outdoor temperature is greater than or equal to the first preset temperature, and the outdoor humidity is greater than or equal to the first preset humidity; The outdoor temperature is greater than or equal to the second preset temperature, and the outdoor humidity is greater than or equal to the second preset humidity; Wherein, the first preset temperature is lower than the second preset temperature, and the first preset humidity is higher than the second preset humidity.

5. The control method for an air conditioner as described in claim 3, characterized in that, The indoor environmental parameters include the indoor temperature change status and the indoor temperature value. The step of controlling the operation of the first control valve and the second control valve according to the indoor environmental parameters includes: When the indoor temperature is less than or equal to the set temperature of the air conditioner, both the first control valve and the second control valve are closed. When the indoor temperature is greater than the set temperature, the first control valve and the second control valve are controlled to operate according to the change state.

6. The control method for an air conditioner as described in claim 5, characterized in that, The step of controlling the operation of the first control valve and the second control valve according to the changing state includes: When the temperature drop is greater than or equal to a first preset change value, both the first control valve and the second control valve are closed. When the temperature drop is less than the first preset change value, one of the first control valve and the second control valve is opened. When the temperature rises, both the first control valve and the second control valve are opened.

7. The control method for an air conditioner as described in claim 6, characterized in that, After the step of controlling both the first control valve and the second control valve to open, the method further includes: When the opening duration of the first control valve and the second control valve reaches the first preset duration, if the temperature rise or temperature drop value of the space regulated by the air conditioner is less than the second preset change value, the fresh air fan is controlled to reduce the air supply volume.

8. The control method for an air conditioner as described in any one of claims 1 to 7, characterized in that, The step of determining the target control parameter based on the relationship between the fresh air rotation speed and the first rotation speed threshold, and / or the relationship between the fresh air rotation speed and the second rotation speed threshold includes: When the fresh air rotation speed is greater than the first rotation speed threshold, the first control parameter is determined to be the target control parameter; When the fresh air speed is less than or equal to the first speed threshold and / or the fresh air speed is greater than or equal to the second speed threshold, the second control parameter is determined to be the target control parameter; When the fresh air rotation speed is less than the second rotation speed threshold, the third control parameter is determined to be the target control parameter.

9. The control method for an air conditioner as described in any one of claims 1 to 7, characterized in that, The first speed threshold and / or the second speed threshold are positively correlated with the outdoor ambient temperature.

10. The control method for an air conditioner as described in claim 9, characterized in that, The step of determining the first speed threshold and / or the second speed threshold based on the outdoor ambient temperature includes: When the outdoor ambient temperature is less than or equal to the first preset ambient temperature, the first preset rotation speed is determined to be the first rotation speed threshold. When the outdoor ambient temperature is greater than the first preset ambient temperature and the outdoor ambient temperature is less than or equal to the second preset ambient temperature, the second preset speed is determined to be the first speed threshold, and the third preset speed is determined to be the second speed threshold. When the outdoor ambient temperature is greater than the second preset ambient temperature, the fourth preset rotation speed is determined to be the second rotation speed threshold. Wherein, the first preset ambient temperature is lower than the second preset ambient temperature, the first preset rotation speed is lower than the second preset rotation speed, and the third preset rotation speed is lower than the fourth preset rotation speed.

11. The control method for an air conditioner as described in any one of claims 1 to 7, characterized in that, After the step of controlling the operation of the first control valve and the second control valve according to the target control parameters, the method further includes: When the first control valve and the second control valve operate at the first control parameter for a period of time that reaches the second preset duration, if the temperature drop or temperature rise of the space regulated by the air conditioner is less than the third preset change value, then the fresh air fan is controlled to reduce the air supply volume.

12. An air conditioner, characterized in that, The air conditioner includes a control device, a compressor, and a refrigerant main circuit. The refrigerant main circuit includes an indoor heat exchanger, a first economizer, a second economizer, and an outdoor heat exchanger connected in sequence. The indoor heat exchanger and the outdoor heat exchanger are respectively connected to the exhaust port and the return port of the compressor. The first economizer is connected to the return port, and the second economizer is connected to the gas supply port of the compressor. The air conditioner also includes a first control valve and a second control valve. The first control valve is used to adjust the gas supply from the first economizer to the return port, and the second control valve is used to adjust the gas supply from the second economizer to the gas supply port. Both the first control valve and the second control valve are connected to the control device, which includes a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor. When the air conditioner control program is executed by the processor, it implements the steps of the air conditioner control method as described in any one of claims 1 to 11.

13. A storage medium, characterized in that, The storage medium stores a control program for an air conditioner, which, when executed by a processor, implements the steps of the control method for an air conditioner as described in any one of claims 1 to 11.

Citation Information

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