Air conditioner system and air conditioner

Abstract

The utility model relates to an air conditioner system and an air conditioner, the air conditioner system comprises a refrigerant circulation pipeline, a detection module and a control module, the refrigerant circulation pipeline is used for circulating a refrigerant, and a first throttling device adjusts the refrigerant temperature of the refrigerant flowing to a first indoor heat exchanger by changing the opening degree of the first throttling device; the second throttling device adjusts the refrigerant temperature of the refrigerant flowing to the second indoor heat exchanger by changing the opening degree of the second throttling device; the detection module is used for detecting indoor environment humidity; the control module is used for controlling the air conditioner to operate in a dehumidification mode under the condition that the indoor environment humidity is greater than or equal to a humidity threshold value; and in the dehumidification mode, the opening degree of the first throttling device and the opening degree of the second throttling device are controlled according to the indoor environment humidity, so that the refrigerant temperature of a refrigerant flowing to the first indoor heat exchanger and / or the second indoor heat exchanger is reduced. According to the technical scheme, the problem that the energy efficiency is poor when the air conditioner operates in the powerful dehumidification mode is at least solved.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and more particularly to an air conditioner system and an air conditioner. Background Technology

[0002] When an air conditioner is performing high-efficiency dehumidification, it usually increases the frequency of the compressor to increase the flow rate of refrigerant in the pipes, thereby providing more refrigerant to the heat exchange equipment to achieve rapid cooling of the indoor environment.

[0003] However, when the air conditioner is running in the above-mentioned high-efficiency dehumidification mode, the compressor always runs at a high frequency, resulting in high power consumption of the compressor unit, which in turn makes the air conditioner less energy efficient. Utility Model Content

[0004] This application provides an air conditioning system and an air conditioner to at least solve the technical problem of poor energy efficiency of the air conditioner when it is operating in the high-efficiency dehumidification mode.

[0005] In a first aspect, this application provides an air conditioning system, which includes a refrigerant circulation pipeline, a detection module, and a control module, wherein:

[0006] The refrigerant circulation pipeline includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a first throttling device, and a second throttling device. The compressor is connected to the outdoor heat exchanger, the outdoor heat exchanger is connected to the first indoor heat exchanger, the first indoor heat exchanger is connected to the second indoor heat exchanger, and the second indoor heat exchanger is connected to the compressor. The first throttling device is located between the outdoor heat exchanger and the first indoor heat exchanger, and the second throttling device is located between the first indoor heat exchanger and the second indoor heat exchanger. The refrigerant circulation pipeline is used to circulate refrigerant. The first throttling device adjusts the temperature of the refrigerant flowing to the first indoor heat exchanger by changing its opening, and the second throttling device adjusts the temperature of the refrigerant flowing to the second indoor heat exchanger by changing its opening.

[0007] The detection module is connected to the control module; the detection module is at least used to detect the indoor ambient humidity and send the indoor ambient humidity data to the control module.

[0008] The control module is connected to the first throttling device and the second throttling device respectively; the control module is used to control the air conditioner to operate in dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold; in dehumidification mode, the opening degree of the first throttling device and the opening degree of the second throttling device are controlled according to the indoor ambient humidity so as to reduce the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger and / or the second indoor heat exchanger.

[0009] In one feasible embodiment of this application, the detection module includes:

[0010] Temperature and humidity detection unit: The temperature and humidity detection unit is used to detect indoor ambient humidity, indoor ambient temperature and outdoor ambient temperature.

[0011] The first temperature sensing bulb is installed in the first indoor heat exchanger and is used to detect the temperature of the first inner tube; wherein, the temperature of the first inner tube is the temperature of the inner tube of the first indoor heat exchanger.

[0012] The second temperature sensor is installed in the second indoor heat exchanger and is used to detect the temperature of the second inner tube; wherein, the temperature of the second inner tube is the temperature of the inner tube of the second indoor heat exchanger.

[0013] In one feasible embodiment of this application, the control module includes a first control unit, wherein:

[0014] The first control unit is used to control the air conditioner to operate in the first dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is less than the preset difference threshold.

[0015] In the first dehumidification mode, the opening degree of the first throttling device is controlled to the maximum value so that the refrigerant temperature flowing to the first indoor heat exchanger remains unchanged, and the opening degree of the second throttling device is controlled to decrease according to the indoor ambient humidity so that the refrigerant temperature flowing to the second indoor heat exchanger is reduced.

[0016] In one feasible embodiment of this application, the control module includes a second control unit, wherein:

[0017] The second control unit is used to control the air conditioner to operate in the second dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is greater than or equal to the difference threshold.

[0018] In the second dehumidification mode, the opening degree of the first throttling device and the opening degree of the second throttling device are reduced according to the indoor ambient humidity, so as to reduce the temperature of the refrigerant flowing to the first indoor heat exchanger and the refrigerant flowing to the second indoor heat exchanger.

[0019] In one feasible embodiment of this application, the second control unit includes:

[0020] The acquisition subunit is used to acquire the temperature of the first inner tube, the temperature of the second inner tube, the indoor ambient temperature, and the indoor ambient humidity.

[0021] The first calculation subunit is used to calculate the dew point temperature based on the indoor ambient temperature and indoor ambient humidity.

[0022] The second calculation subunit is used to calculate the target inner tube temperature based on the dew point temperature.

[0023] The control subunit is used to control the opening degree of the first throttling device to decrease so that the temperature of the first inner tube is equal to the target inner tube temperature, and to control the opening degree of the second throttling device to decrease so that the temperature of the second inner tube is equal to the target inner tube temperature.

[0024] In one feasible embodiment of this application, the second computing subunit includes:

[0025] Obtain the subunit to acquire the outdoor ambient temperature;

[0026] The first determining unit is used to determine a first temperature correction value based on the outdoor ambient temperature; wherein the first temperature correction value is positively correlated with the outdoor ambient temperature, and the first temperature correction value is a value greater than 0;

[0027] The second determining unit is used to determine the difference between the dew point temperature and the first temperature correction value as the target inner tube temperature.

[0028] In one feasible embodiment of this application, the control subunit includes:

[0029] The first calculation unit is used to calculate the first temperature difference between the first inner tube temperature and the target inner tube temperature;

[0030] The second calculation unit is used to calculate the second temperature difference between the second inner tube temperature and the target inner tube temperature.

[0031] The first control unit is used to reduce the opening of the first throttling device according to the first temperature difference, so that the first inner tube temperature is equal to the target inner tube temperature.

[0032] The second control unit is used to reduce the opening of the second throttling device according to the second temperature difference, so that the second inner tube temperature is equal to the target inner tube temperature.

[0033] In one feasible embodiment of this application, the control module further includes a third control unit, wherein:

[0034] The third control unit is used to control the air conditioner to operate in cooling mode when the indoor humidity is less than the humidity threshold.

[0035] In cooling mode, the target air outlet temperature of the air conditioner is determined based on the indoor ambient humidity and the user-set temperature. The opening degree of the first throttling device, the opening degree of the second throttling device, and the operating frequency of the compressor are controlled in conjunction with the target air outlet temperature to ensure that the air conditioner outputs air at the target air outlet temperature.

[0036] In one feasible embodiment of this application, the third control unit includes:

[0037] The first determining subunit is used to determine a second temperature correction value based on the indoor ambient humidity; wherein the second temperature correction value is positively correlated with the indoor ambient humidity, and the second temperature correction value is a value greater than 0;

[0038] The second determining subunit is used to determine the difference between the user-set temperature and the second temperature correction value as the target air outlet temperature;

[0039] The control subunit is used to perform coordinated control of the opening degree of the first throttling device, the opening degree of the second throttling device, and the operating frequency of the compressor based on the target outlet air temperature.

[0040] Secondly, this application provides an air conditioner, which includes an air conditioner system as described in any of the embodiments of the first aspect above.

[0041] The technical solutions provided in this application have the following advantages compared with the prior art:

[0042] In the technical solution provided in this application, when the control module controls the air conditioner to operate in dehumidification mode, the control module controls the opening degree of the first throttling device and the second throttling device according to the indoor ambient humidity. Based on the characteristic that the throttling device can adjust the refrigerant temperature flowing through it, the first and second throttling devices assist in reducing the refrigerant temperature, thereby lowering the refrigerant temperature flowing to the first indoor heat exchanger and / or the second indoor heat exchanger. Through the technical solution provided in this application, when the air conditioner performs intensive dehumidification, due to the auxiliary effect of the first and second throttling devices, the compressor does not need to operate at a high frequency, thereby reducing the power consumption of the compressor during intensive dehumidification and improving the energy efficiency of the air conditioner. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0046] Figure 1 This is a schematic diagram of the structure of an air conditioning system provided in an embodiment of this application;

[0047] Figure 2 A schematic diagram of the refrigerant circulation pipeline in an air conditioning system provided in this application embodiment;

[0048] Figure 3 This is a control flowchart of an air conditioning system during automatic operation, provided as an embodiment of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Refrigerant circulation piping; 2. Detection module; 3. Control module; 11. Compressor; 12. Outdoor heat exchanger; 13. First indoor heat exchanger; 14. Second indoor heat exchanger; 15. First throttling device; 16. Second throttling device; 17. Four-way valve; 18. Exhaust fan. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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.

[0052] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0053] In order to at least solve the technical problem of poor energy efficiency of air conditioners when operating in high-efficiency dehumidification mode, this application provides an air conditioner system and air conditioner that can improve the energy efficiency of the air conditioner when it is performing high-efficiency dehumidification.

[0054] Figure 1 This is a schematic diagram of the structure of an air conditioning system provided in an embodiment of this application, with reference to... Figure 1 An air conditioning system provided in this application embodiment includes a refrigerant circulation pipeline 1, a detection module 2, and a control module 3, wherein:

[0055] The refrigerant circulation pipeline 1 includes a compressor 11, an outdoor heat exchanger 12, a first indoor heat exchanger 13, a second indoor heat exchanger 14, a first throttling device 15, and a second throttling device 16. The compressor 11 is connected to the outdoor heat exchanger 12, the outdoor heat exchanger 12 is connected to the first indoor heat exchanger 13, the first indoor heat exchanger 13 is connected to the second indoor heat exchanger 14, and the second indoor heat exchanger 14 is connected to the compressor 11. The first throttling device 15 is located between the outdoor heat exchanger 12 and the first indoor heat exchanger 13, and the second throttling device 16 is located between the first indoor heat exchanger 13 and the second indoor heat exchanger 14. The refrigerant circulation pipeline 1 is used to circulate refrigerant. The first throttling device 15 adjusts the refrigerant temperature flowing to the first indoor heat exchanger 13 by changing its own opening, and the second throttling device 16 adjusts the refrigerant temperature flowing to the second indoor heat exchanger 14 by changing its own opening.

[0056] The detection module 2 is connected to the control module 3; the detection module 2 is used at least to detect the indoor ambient humidity and send the indoor ambient humidity to the control module 3.

[0057] The control module 3 is connected to the first throttling device 15 and the second throttling device 16 respectively. The control module 3 is used to control the air conditioner to operate in dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold. In dehumidification mode, the opening degree of the first throttling device 15 and the opening degree of the second throttling device 16 are controlled according to the indoor ambient humidity so as to reduce the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger 13 and / or the second indoor heat exchanger 14.

[0058] Specifically, Figure 2 This application provides a schematic diagram of the connection of refrigerant circulation pipe 1 in an air conditioning system, referring to... Figure 2 The refrigerant circulation pipeline 1 specifically includes a compressor 11, an outdoor heat exchanger 12, a first indoor heat exchanger 13, a second indoor heat exchanger 14, a first throttling device 15, a second throttling device 16, and a four-way valve 17.

[0059] In the refrigerant circulation pipeline 1, the refrigerant outlet of the compressor 11 is connected to one end of the outdoor heat exchanger 12 through a four-way valve 17. The other end of the outdoor heat exchanger 12 is connected to one end of the first throttling device 15. The other end of the first throttling device 15 is connected to one end of the first indoor heat exchanger 13. The other end of the first indoor heat exchanger 13 is connected to one end of the second throttling device 16. The other end of the second throttling device 16 is connected to one end of the second indoor heat exchanger 14. The other end of the second indoor heat exchanger 14 is connected back to the refrigerant inlet of the compressor 11 through the four-way valve 17.

[0060] The compressor 11 is used to compress the refrigerant, so that the low-temperature, low-pressure refrigerant entering from the refrigerant inlet of the compressor 11 is converted into high-temperature, high-pressure refrigerant output from the refrigerant outlet of the compressor 11.

[0061] An exhaust fan 18 is installed on the outdoor heat exchanger 12. The outdoor heat exchanger 12 is used for heat exchange with the outdoor environment. When the refrigerant flows through the outdoor heat exchanger 12, the exhaust fan 18 blows air out to the outdoor environment, and the refrigerant dissipates its own heat into the air blown out to the outdoor environment. It can be seen that for the high-temperature and high-pressure refrigerant output from the refrigerant outlet of the compressor 11, when the high-temperature and high-pressure refrigerant flows through the outdoor heat exchanger 12, the high-temperature and high-pressure refrigerant is converted into a low-temperature and low-pressure refrigerant.

[0062] Exhaust fans 18 are installed on the first indoor heat exchanger 13 and the second indoor heat exchanger 14. The first indoor heat exchanger 13 and the second indoor heat exchanger 14 are used to exchange heat with the indoor environment. When the refrigerant flows through the first indoor heat exchanger 13 and the second indoor heat exchanger 14, the exhaust fans 18 cause the air in the indoor environment to circulate. When the air flows through the first indoor heat exchanger 13 and the second indoor heat exchanger 14, the refrigerant absorbs the heat from the air flowing through the first indoor heat exchanger 13 and the second indoor heat exchanger 14. It can be seen that for the low-temperature and low-pressure refrigerant output from the outdoor heat exchanger 12, after the low-temperature and low-pressure refrigerant flows through the first indoor heat exchanger 13 and the second indoor heat exchanger 14, the low-temperature and low-pressure refrigerant is converted into a high-temperature and high-pressure refrigerant.

[0063] The first throttling device 15 and the second throttling device 16 throttle the refrigerant flowing through them. When the opening of the first throttling device 15 and the second throttling device 16 is not fully open, the refrigerant temperature is further reduced when the refrigerant flows through the first throttling device 15 and the second throttling device 16. Therefore, the first throttling device 15 can adjust the refrigerant temperature flowing to the first indoor heat exchanger 13 by changing its own opening, and the second throttling device 16 can adjust the refrigerant temperature flowing to the second indoor heat exchanger 14 by changing its own opening.

[0064] In some specific implementation scenarios of this application, the first throttling device 15 and the second throttling device 16 can be electric throttling devices. Both the first throttling device 15 and the second throttling device 16 are connected to the control module 3 and can receive control commands from the control module 3 to adjust their own opening degree.

[0065] When the opening degree of the first throttling device 15 is at its maximum value, the throttling effect of the first throttling device 15 is not effective; when the opening degree of the first throttling device 15 is not at its maximum value, the throttling effect of the first throttling device 15 is effective, and the throttling effect of the first throttling device 15 is negatively correlated with the opening degree of the first throttling device 15. That is, the smaller the opening degree of the first throttling device 15, the better the throttling effect of the first throttling device 15, and the more the temperature of the refrigerant flowing through it can be reduced.

[0066] Similarly, when the opening of the second throttling device 16 is at its maximum value, the throttling effect of the second throttling device 16 is ineffective; when the opening of the second throttling device 16 is not at its maximum value, the throttling effect of the second throttling device 16 is effective, and the throttling effect of the second throttling device 16 is negatively correlated with the opening of the second throttling device 16, that is, the smaller the opening of the second throttling device 16, the better the throttling effect of the second throttling device 16, and the more the refrigerant temperature of the refrigerant flowing through it can be reduced.

[0067] In the air conditioner system provided in this application embodiment, the detection module 2 is used to detect the indoor humidity of the indoor environment. The detection module 2 is connected to the control module 3 and can communicate with the control module 3 to send the detected indoor humidity to the control module 3.

[0068] In the air conditioner system provided in this embodiment, the control module 3 is connected to the detection module 2, the first throttling device 15, and the second throttling device 16. In this embodiment, after obtaining the indoor ambient humidity sent by the detection module 2, the control module 3 compares the indoor ambient humidity with a preset humidity threshold. When the indoor ambient humidity is greater than or equal to the humidity threshold, the control module 3 controls the air conditioner to operate in dehumidification mode. In dehumidification mode, the control module 3 generates a control command based on the indoor ambient humidity and sends the control command to the first throttling device 15 and the second throttling device 16, thereby controlling the opening degree of the first throttling device 15 and the second throttling device 16, so that the refrigerant temperature flowing to the first indoor heat exchanger 13 and / or the second indoor heat exchanger 14 is reduced.

[0069] In some specific embodiments of this application, the control module 3 may specifically be the control motherboard of an air conditioner. In one feasible embodiment of this application, the preset humidity threshold in the control module 3 is pre-determined and stored in the control module 3 by a technician.

[0070] In the technical solution provided in this application embodiment, when the control module 3 controls the air conditioner to operate in dehumidification mode, the control module 3 controls the opening degree of the first throttling device 15 and the second throttling device 16 according to the indoor ambient humidity. Based on the characteristic that the throttling device can adjust the refrigerant temperature flowing through it, the first throttling device 15 and the second throttling device 16 assist in reducing the refrigerant temperature, thereby reducing the refrigerant temperature flowing to the first indoor heat exchanger 13 and / or the second indoor heat exchanger 14. Through the technical solution provided in this application, when the air conditioner is dehumidifying, due to the auxiliary effect of the first throttling device 15 and the second throttling device 16, the compressor 11 does not need to operate at a high operating frequency, thereby reducing the power consumption of the compressor 11 during dehumidification, and thus improving the energy efficiency of the air conditioner.

[0071] In one feasible embodiment of this application, the detection module 2 includes:

[0072] Temperature and humidity detection unit: The temperature and humidity detection unit is used to detect indoor ambient humidity, indoor ambient temperature and outdoor ambient temperature.

[0073] The first temperature sensor is installed in the first indoor heat exchanger 13 and is used to detect the temperature of the first inner tube; wherein, the temperature of the first inner tube is the temperature of the inner tube of the first indoor heat exchanger 13.

[0074] The second temperature sensor is installed in the second indoor heat exchanger 14 and is used to detect the temperature of the second inner tube; wherein, the temperature of the second inner tube is the temperature of the inner tube of the second indoor heat exchanger 14.

[0075] Specifically, in this embodiment, the detection module 2 is used not only to detect indoor ambient humidity, but also to detect indoor ambient temperature, outdoor ambient temperature, first inner tube temperature and second inner tube temperature.

[0076] The detection module 2 can specifically consist of a temperature and humidity detection unit, a first temperature sensing bulb, and a second temperature sensing bulb. The temperature and humidity detection unit can be a temperature and humidity sensor installed on the air conditioner. In some specific embodiments, the temperature and humidity detection unit can be installed at the return air vent of the indoor unit and the return air vent of the outdoor unit of the air conditioner. The first temperature sensing bulb is installed in the first indoor heat exchanger 13, specifically at the inner tube of the first indoor heat exchanger 13. The first temperature sensing bulb is used to detect the temperature of the first inner tube, which is the temperature of the inner tube of the first indoor heat exchanger 13. The second temperature sensing bulb is installed in the second indoor heat exchanger 14, specifically at the inner tube of the second indoor heat exchanger 14. The second temperature sensing bulb is used to detect the temperature of the second inner tube, which is the temperature of the inner tube of the second indoor heat exchanger 14.

[0077] In one feasible embodiment of this application, the control module 3 includes a first control unit, wherein:

[0078] The first control unit is used to control the air conditioner to operate in the first dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is less than the preset difference threshold.

[0079] In the first dehumidification mode, the opening degree of the first throttling device 15 is controlled to the maximum opening value so that the refrigerant temperature flowing to the first indoor heat exchanger 13 remains unchanged, and the opening degree of the second throttling device 16 is controlled to decrease according to the indoor ambient humidity so that the refrigerant temperature flowing to the second indoor heat exchanger 14 is reduced.

[0080] When the control module 3 detects that the indoor ambient humidity is greater than or equal to the humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is less than the preset difference threshold, it automatically controls the air conditioner to operate in the first dehumidification mode.

[0081] The user-set temperature is the temperature at which the air conditioner is expected to operate. This temperature can be input by the user through the air conditioner's wired controller. The differential threshold is pre-stored in control module 3 and can be set by technicians.

[0082] In the first dehumidification mode, the control module 3 controls the opening of the first throttling device 15 to the maximum opening value, and controls the opening of the second throttling device 16 to decrease according to the indoor ambient humidity.

[0083] When the difference between the indoor ambient temperature and the user-set temperature is less than a preset difference threshold, the current indoor humidity is high, but the temperature basically meets the user's expectations. The opening of the first throttling device 15 is controlled to its maximum value, so that the first throttling device 15 has no throttling effect on the refrigerant, and the refrigerant temperature flowing from the outdoor heat exchanger 12 through the first throttling device 15 to the first indoor heat exchanger 13 remains basically unchanged. Based on the indoor ambient humidity, the opening of the second throttling device 16 is reduced, so that the second throttling device 16 has a throttling effect on the refrigerant, and the refrigerant temperature flowing from the first indoor heat exchanger 13 through the second throttling device 16 to the second indoor heat exchanger 14 decreases.

[0084] In the first dehumidification mode, the first indoor heat exchanger 13 provides heat recovery, while the second indoor heat exchanger 14 provides dehumidification. This first dehumidification mode is designed for situations where the ambient temperature is generally within the user's expectations but the indoor humidity is high. It reduces indoor humidity with minimal reduction in indoor temperature, thus improving the comfort experience of the air conditioner.

[0085] In one feasible embodiment of this application, the control module 3 includes a second control unit, wherein:

[0086] The second control unit is used to control the air conditioner to operate in the second dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is greater than or equal to the difference threshold.

[0087] In the second dehumidification mode, the opening degree of the first throttling device 15 and the opening degree of the second throttling device 16 are reduced according to the indoor ambient humidity, so as to reduce the refrigerant temperature flowing to the first indoor heat exchanger 13 and the refrigerant flowing to the second indoor heat exchanger 14.

[0088] Specifically, in the second dehumidification mode, the control module 3 controls the opening degree of the first throttling device 15 to decrease according to the indoor ambient humidity, and controls the opening degree of the second throttling device 16 to decrease according to the indoor ambient humidity.

[0089] When the difference between the indoor ambient temperature and the user-set temperature is greater than or equal to a preset difference threshold, the current indoor humidity is high and the temperature deviates significantly from the user's expectation. Based on the indoor ambient humidity, the opening of the first throttling device 15 is reduced, causing it to throttle the refrigerant. The refrigerant temperature flowing from the outdoor heat exchanger 12 to the first indoor heat exchanger 13 via the first throttling device 15 is reduced for the first time. Similarly, based on the indoor ambient humidity, the opening of the second throttling device 16 is reduced, causing it to throttle the refrigerant. The refrigerant temperature flowing from the first indoor heat exchanger 13 to the second indoor heat exchanger 14 via the second throttling device 16 is reduced for the second time. Therefore, through the first throttling device 15 and the second throttling device 16, the refrigerant temperatures flowing to the first indoor heat exchanger 13 and the second indoor heat exchanger 14 are significantly reduced.

[0090] In the second dehumidification mode, both the first indoor heat exchanger 13 and the second indoor heat exchanger 14 perform dehumidification. Therefore, even if the compressor 11 does not operate at a high frequency in the second dehumidification mode, the dehumidification effect of the first indoor heat exchanger 13 and the second indoor heat exchanger 14 can be guaranteed. While ensuring the overall dehumidification effect of the air conditioner, the compressor 11 can operate at a lower frequency, effectively improving the overall energy efficiency of the air conditioner.

[0091] In one feasible embodiment of this application, the second control unit includes:

[0092] The acquisition subunit is used to acquire the temperature of the first inner tube, the temperature of the second inner tube, the indoor ambient temperature, and the indoor ambient humidity.

[0093] The first calculation subunit is used to calculate the dew point temperature based on the indoor ambient temperature and indoor ambient humidity.

[0094] The second calculation subunit is used to calculate the target inner tube temperature based on the dew point temperature.

[0095] The control subunit is used to control the opening of the first throttling device 15 to decrease so that the temperature of the first inner tube is equal to the target inner tube temperature, and to control the opening of the second throttling device 16 to decrease so that the temperature of the second inner tube is equal to the target inner tube temperature.

[0096] Specifically, the dew point temperature is first calculated based on the indoor ambient temperature and humidity. The dew point temperature is the temperature at which air reaches saturation when cooled, assuming a constant water vapor content and air pressure. Therefore, the dew point temperature is essentially the condensation temperature of water vapor in the air.

[0097] In one feasible embodiment of this application, the indoor ambient temperature and humidity can be processed based on the dew point temperature function to calculate the dew point temperature. This dew point temperature function is prior art and will not be described in detail here.

[0098] After calculating the dew point temperature, the target inner tube temperature is calculated based on the dew point temperature. In one feasible embodiment of this application, the dew point temperature can be directly determined as the target inner tube temperature.

[0099] After obtaining the target inner tube temperature, the opening of the first throttling device 15 is reduced to make the first inner tube temperature equal to the target inner tube temperature, and the opening of the second throttling device 16 is reduced to make the second inner tube temperature equal to the target inner tube temperature. By controlling the inner tube temperatures of the first and second heat exchangers to the target inner tube temperatures, the water vapor contained in the indoor air condenses when passing through the first indoor heat exchanger 13 and the second heat exchanger, achieving a dehumidification effect.

[0100] In one feasible embodiment of this application, the second computing subunit includes:

[0101] Obtain the subunit to acquire the outdoor ambient temperature;

[0102] The first determining unit is used to determine a first temperature correction value based on the outdoor ambient temperature; wherein the first temperature correction value is positively correlated with the outdoor ambient temperature;

[0103] The second determining unit is used to determine the difference between the dew point temperature and the first temperature correction value as the target inner tube temperature, where the first temperature correction value is a value greater than 0.

[0104] Specifically, the outdoor ambient temperature affects the heat exchange efficiency of the outdoor heat exchanger 12. For example, the higher the outdoor ambient temperature, the more difficult it is for the refrigerant flowing through the outdoor heat exchanger 12 to exchange heat with the outdoor environment, resulting in a poorer heat exchange efficiency. Therefore, the outdoor ambient temperature affects the refrigerant temperature flowing from the outdoor heat exchanger 12 to the first indoor heat exchanger 13 and the second indoor heat exchanger 14. Consequently, the target inner pipe temperature needs to be corrected based on the outdoor ambient temperature.

[0105] In this embodiment, a first temperature correction value is determined based on the outdoor ambient temperature, and the difference between the dew point temperature and the first temperature correction value is determined as the target inner tube temperature. The first temperature correction value is positively correlated with the outdoor ambient temperature.

[0106] Dew point temperature is the condensation temperature of water vapor in the air. Dew point temperature is a value less than 0. Since the first temperature correction value is positively correlated with the outdoor ambient temperature, the first temperature correction value is a value greater than 0. The difference between the dew point temperature and the first temperature correction value is determined as the target inner tube temperature. Therefore, the higher the outdoor ambient temperature, the lower the target inner tube temperature.

[0107] In this embodiment, the control module 3 may pre-store an outdoor ambient temperature-first temperature correction value mapping table. When the control module 3 obtains the outdoor ambient temperature, it looks up the first temperature correction value in the outdoor ambient temperature-first temperature correction value mapping table. The second temperature correction value is obtained in the same way.

[0108] In one feasible embodiment of this application, the opening degree of the first throttling device 15 and the opening degree of the second throttling device 16 can be reduced by means of feedback adjustment. In this embodiment, the control subunit includes:

[0109] The first calculation unit is used to calculate the first temperature difference between the first inner tube temperature and the target inner tube temperature;

[0110] The second calculation unit is used to calculate the second temperature difference between the second inner tube temperature and the target inner tube temperature.

[0111] The first control unit is used to reduce the opening of the first throttling device 15 according to the first temperature difference, so that the first inner tube temperature is equal to the target inner tube temperature.

[0112] The second control unit is used to reduce the opening of the second throttling device 16 according to the second temperature difference, so that the second inner tube temperature is equal to the target inner tube temperature.

[0113] Specifically, in this embodiment, the control module 3 can pre-store a temperature difference-target opening degree mapping table. When the control module 3 obtains the outdoor ambient temperature, it searches the temperature difference-opening degree mapping table to obtain the target opening degree of the first throttling device 15 and the target opening degree of the second throttling device 16, thereby controlling the opening degree of the first throttling device 15 and the opening degree of the second throttling device 16 to decrease to the target opening degree.

[0114] In one feasible embodiment of this application, after determining the target inner tube temperature, a first temperature difference and a second temperature difference are detected every t seconds. The opening degree of the first throttling device 15 is controlled based on the first temperature difference, and the opening degree of the second throttling device 16 is controlled based on the second temperature difference, so that the first inner tube temperature is always close to the target inner tube temperature, and the second inner tube temperature is also always close to the target inner tube temperature. In some practical application scenarios of this application, t can be set to 10 seconds.

[0115] In one feasible embodiment of this application, the control module 3 can also automatically control the air conditioner to operate in cooling mode. In cooling mode, the first indoor heat exchanger 13 and the second indoor heat exchanger 14 are used to cool the indoor environment, but do not have a dehumidifying effect.

[0116] In this embodiment, the control module 3 further includes a third control unit, wherein:

[0117] The third control unit is used to control the air conditioner to operate in cooling mode when the indoor humidity is less than the humidity threshold.

[0118] In cooling mode, the target air outlet temperature of the air conditioner is determined based on the indoor ambient humidity and the user-set temperature. The opening degree of the first throttling device 15, the opening degree of the second throttling device 16, and the operating frequency of the compressor 11 are controlled in conjunction with the target air outlet temperature so that the air conditioner can output air at the target air outlet temperature.

[0119] In one feasible embodiment of this application, the third control unit includes:

[0120] The first determining subunit is used to determine the second temperature correction value based on the indoor ambient humidity; wherein the second temperature correction value is positively correlated with the indoor ambient humidity, and the second temperature correction value is a value greater than 0;

[0121] The second determining subunit is used to determine the difference between the user-set temperature and the second temperature correction value as the target air outlet temperature;

[0122] The control subunit is used to perform linkage control on the opening degree of the first throttling device 15, the opening degree of the second throttling device 16, and the operating frequency of the compressor 11 according to the target outlet air temperature.

[0123] Specifically, when the indoor humidity is below the humidity threshold, the indoor humidity is low, and it is sufficient to control the air conditioner to cool. In this embodiment, since indoor humidity affects the user's perceived temperature, the user-set temperature needs to be adaptively adjusted according to the indoor humidity to ensure that the air conditioner's target air outlet temperature meets the user's expectations.

[0124] According to the NOAA Heat Index, the perceived temperature is relatively high in environments with high humidity. Therefore, the difference between the user-set temperature and the second temperature correction value is determined as the target air outlet temperature. The second temperature correction value is positively correlated with indoor humidity, and is greater than 0. That is, the target air outlet temperature will be slightly lower than the user-set temperature, and the higher the indoor humidity, the lower the target air outlet temperature will be relative to the user-set temperature.

[0125] The technical solution provided in this embodiment allows for adaptive adjustment of the target air outlet temperature of the air conditioner, taking into account the current indoor humidity, so that the target air outlet temperature of the air conditioner can better meet the user's expectations.

[0126] In one feasible embodiment of this application, the control module 3 can be configured to automatically control the operation of the air conditioning system. Figure 3 This application provides a flowchart illustrating the automatic operation of an air conditioning system. Referring to Figure 3, the control flow of the control module 3 during automatic operation of the air conditioning system is as follows:

[0127] S301: Received the user's input command to run automatically;

[0128] S302: Compare the indoor ambient temperature T1 with the user-set temperature T2;

[0129] S303: When T1≤T2-a℃, control the air conditioner to operate in heating mode;

[0130] S304: When T2-a℃ < T1 < T2+a℃, control the air conditioner to maintain the current operating mode;

[0131] S305: When T1≥T2+a℃, control the air conditioner to operate in cooling and dehumidification mode;

[0132] S306: Compare indoor ambient humidity H with humidity threshold H0;

[0133] S307: When H < H0, control the air conditioner to operate in cooling mode;

[0134] S308: When H≥H0, compare the indoor ambient temperature T1 with the user-set temperature T2 again;

[0135] S309: When T1-T2 < b, control the air conditioner to operate in the first dehumidification mode;

[0136] S310: When T1-T2≥b, control the air conditioner to operate in the second dehumidification mode.

[0137] In the above control flow, b is the set difference threshold.

[0138] On the other hand, this application also provides an air conditioner that includes an air conditioner system as described in any of the above system embodiments.

[0139] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0140] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An air conditioning system, characterized in that, The air conditioning system includes a refrigerant circulation pipeline, a detection module, and a control module, wherein: The refrigerant circulation pipeline includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a first throttling device, and a second throttling device. The compressor is connected to the outdoor heat exchanger, the outdoor heat exchanger is connected to the first indoor heat exchanger, the first indoor heat exchanger is connected to the second indoor heat exchanger, and the second indoor heat exchanger is connected to the compressor. The first throttling device is located between the outdoor heat exchanger and the first indoor heat exchanger, and the second throttling device is located between the first indoor heat exchanger and the second indoor heat exchanger. The refrigerant circulation pipeline is used to circulate refrigerant. The first throttling device adjusts the refrigerant temperature flowing to the first indoor heat exchanger by changing its opening degree, and the second throttling device adjusts the refrigerant temperature flowing to the second indoor heat exchanger by changing its opening degree. The detection module is connected to the control module; the detection module is at least used to detect indoor ambient humidity and send the indoor ambient humidity to the control module. The control module is connected to the first throttling device and the second throttling device respectively; the control module is used to control the air conditioner to operate in dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold; in the dehumidification mode, the opening degree of the first throttling device and the opening degree of the second throttling device are controlled according to the indoor ambient humidity so as to reduce the refrigerant temperature flowing to the first indoor heat exchanger and / or the second indoor heat exchanger.

2. The air conditioning system according to claim 1, characterized in that, The detection module includes: A temperature and humidity detection unit is used to detect the indoor ambient humidity, indoor ambient temperature and outdoor ambient temperature. The first temperature sensor is installed in the first indoor heat exchanger and is used to detect the temperature of the first inner tube; wherein, the temperature of the first inner tube is the temperature of the inner tube of the first indoor heat exchanger. The second temperature sensor is installed in the second indoor heat exchanger and is used to detect the temperature of the second inner tube; wherein, the temperature of the second inner tube is the temperature of the inner tube of the second indoor heat exchanger.

3. The air conditioning system according to claim 2, characterized in that, The control module includes a first control unit, wherein: The first control unit is used to control the air conditioner to operate in a first dehumidification mode when the indoor ambient humidity is greater than or equal to a humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is less than a preset difference threshold. In the first dehumidification mode, the opening degree of the first throttling device is controlled to the maximum opening value so that the refrigerant temperature flowing to the first indoor heat exchanger remains unchanged, and the opening degree of the second throttling device is controlled to decrease according to the indoor ambient humidity so that the refrigerant temperature flowing to the second indoor heat exchanger is reduced.

4. The air conditioning system according to claim 3, characterized in that, The control module includes a second control unit, wherein: The second control unit is used to control the air conditioner to operate in a second dehumidification mode when the indoor ambient humidity is greater than or equal to a humidity threshold and the difference between the indoor ambient temperature and the user-set temperature is greater than or equal to the difference threshold. In the second dehumidification mode, the opening degree of the first throttling device and the opening degree of the second throttling device are reduced according to the indoor ambient humidity, so as to reduce the temperature of the refrigerant flowing to the first indoor heat exchanger and the refrigerant flowing to the second indoor heat exchanger.

5. The air conditioning system according to claim 4, characterized in that, The second control unit includes: The acquisition subunit is used to acquire the temperature of the first inner tube, the temperature of the second inner tube, the indoor ambient temperature, and the indoor ambient humidity; The first calculation subunit is used to calculate the dew point temperature based on the indoor ambient temperature and the indoor ambient humidity. The second calculation subunit is used to calculate the target inner tube temperature based on the dew point temperature. The control subunit is used to control the opening degree of the first throttling device to decrease so that the temperature of the first inner tube is equal to the target inner tube temperature, and to control the opening degree of the second throttling device to decrease so that the temperature of the second inner tube is equal to the target inner tube temperature.

6. The air conditioning system according to claim 5, characterized in that, The second computing subunit includes: Obtain the subunit, used to obtain the outdoor ambient temperature; The first determining unit is used to determine a first temperature correction value based on the outdoor ambient temperature; wherein the first temperature correction value is positively correlated with the outdoor ambient temperature, and the first temperature correction value is a value greater than 0; The second determining unit is used to determine the difference between the dew point temperature and the first temperature correction value as the target inner tube temperature.

7. The air conditioning system according to claim 5, characterized in that, The control subunit includes: The first calculation unit is used to calculate the first temperature difference between the first inner tube temperature and the target inner tube temperature; The second calculation unit is used to calculate the second temperature difference between the second inner tube temperature and the target inner tube temperature. The first control unit is used to reduce the opening of the first throttling device according to the first temperature difference, so that the first inner tube temperature is equal to the target inner tube temperature. The second control unit is used to reduce the opening of the second throttling device according to the second temperature difference, so that the second inner tube temperature is equal to the target inner tube temperature.

8. The air conditioning system according to claim 3, characterized in that, The control module also includes a third control unit, wherein: The third control unit is used to control the air conditioner to operate in cooling mode when the indoor ambient humidity is less than the humidity threshold. In the cooling mode, the target air outlet temperature of the air conditioner is determined based on the indoor ambient humidity and the user-set temperature. The opening degree of the first throttling device, the opening degree of the second throttling device, and the operating frequency of the compressor are controlled in conjunction with the target air outlet temperature so that the air conditioner can output air at the target air outlet temperature.

9. The air conditioning system according to claim 8, characterized in that, The third control unit includes: The first determining subunit is used to determine a second temperature correction value based on the indoor ambient humidity; wherein the second temperature correction value is positively correlated with the indoor ambient humidity, and the second temperature correction value is a value greater than 0; The second determining subunit is used to determine the difference between the user-set temperature and the second temperature correction value as the target air outlet temperature; The control subunit is used to perform coordinated control of the opening degree of the first throttling device, the opening degree of the second throttling device, and the operating frequency of the compressor based on the target outlet air temperature.

10. An air conditioner, characterized in that, The air conditioner includes the air conditioner system as described in any one of claims 1-9.

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