Air conditioner system and air conditioner

Abstract

The invention 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] The present application relates to the technical field of air conditioners, and in particular to an air conditioner system and an air conditioner. Background Art

[0002] When the air conditioner is performing strong dehumidification, the frequency of the compressor is usually increased to increase the flow rate of the refrigerant flowing in the pipeline, thereby providing more refrigerant to the heat exchange equipment to achieve rapid cooling of the indoor environment.

[0003] However, when the air conditioner operates in the above-mentioned strong dehumidification mode, the compressor always operates at a higher frequency, resulting in higher power consumption of the compressor unit, thereby making the energy efficiency of the air conditioner poor. Summary of the invention

[0004] The present application provides an air conditioner system and an air conditioner, so as to at least solve the technical problem that the energy efficiency of the air conditioner is poor when the air conditioner operates in a strong dehumidification mode.

[0005] In a first aspect, the present application provides an air conditioner system, the air conditioner system comprising 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 arranged between the outdoor heat exchanger and the first indoor heat exchanger, and the second throttling device is arranged between the first indoor heat exchanger and the second indoor heat exchanger. The refrigerant circulation pipeline is used for circulating the refrigerant. The first throttling device adjusts the refrigerant temperature of the refrigerant convected to the first indoor heat exchanger by changing its own opening, and the second throttling device adjusts the refrigerant temperature of the refrigerant convected to the second indoor heat exchanger by changing its own opening.

[0007] The detection module is connected to the control module; the detection module is at least used to detect the indoor environmental humidity and send the indoor environmental humidity 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 a dehumidification mode when the indoor ambient humidity is greater than or equal to a humidity threshold; in the dehumidification mode, the opening of the first throttling device and the opening of the second throttling device are controlled according to the indoor ambient humidity to reduce the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger and / or the second indoor heat exchanger.

[0009] In a feasible embodiment of the present application, the detection module includes:

[0010] A temperature and humidity detection unit, which is used to detect indoor environmental humidity, indoor environmental temperature and outdoor environmental temperature;

[0011] A first temperature sensing package, the first temperature sensing package is arranged in the first indoor heat exchanger, and the first temperature sensing package is used to detect the first inner tube temperature; wherein the first inner tube temperature is the inner tube temperature of the first indoor heat exchanger;

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

[0013] In a feasible embodiment of the present 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 a preset difference threshold;

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

[0016] In a feasible embodiment of the present 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 environment humidity is greater than or equal to the humidity threshold and the difference between the indoor environment temperature and the user set temperature is greater than or equal to the difference threshold;

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

[0019] In a feasible embodiment of the present application, the second control unit includes:

[0020] An acquisition subunit, used to acquire the first inner tube temperature, the second inner tube temperature, the indoor environment temperature and the indoor environment humidity;

[0021] A first calculation subunit, used to calculate the dew point temperature according to the indoor ambient temperature and the indoor ambient humidity;

[0022] A second calculation subunit is used to calculate a target inner tube temperature according to the dew point temperature;

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

[0024] In a feasible embodiment of the present application, the second computing subunit includes:

[0025] Get the grandchild unit to get the outdoor ambient temperature;

[0026] A first determination subunit is used to determine a first temperature correction value according to 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 determination 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 a feasible embodiment of the present application, the control subunit includes:

[0029] A first calculation unit, used for calculating a first temperature difference between a first inner tube temperature and a target inner tube temperature;

[0030] A second calculation unit, used for calculating a second temperature difference between the second inner tube temperature and the target inner tube temperature;

[0031] a first control unit, configured 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 a feasible embodiment of the present 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 a cooling mode when the indoor ambient humidity is less than a humidity threshold;

[0035] In cooling mode, the target air outlet temperature of the air conditioner is determined according to the indoor ambient humidity and the temperature set by the user. The opening degree of the first throttling device, the opening degree of the second throttling device and the operating frequency of the compressor are linked and controlled according to the target air outlet temperature so that the air conditioner discharges air at the target air outlet temperature.

[0036] In a feasible embodiment of the present application, the third control unit includes:

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

[0038] A second determination subunit, 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 control the opening degree of the first throttling device, the opening degree of the second throttling device and the operating frequency of the compressor in a linkage manner according to the target air outlet temperature.

[0040] In a second aspect, the present application provides an air conditioner, comprising an air conditioner system as described in any one of the embodiments of the first aspect above.

[0041] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0042] In the technical solution provided by the embodiment of the present application, when the control module controls the air conditioner to operate in the dehumidification mode, the control module controls the opening of the first throttling device and the opening of the second throttling device according to the indoor environmental humidity. Based on the characteristic that the throttling device can adjust the refrigerant temperature of the refrigerant flowing through itself, the first throttling device and the second throttling device assist in reducing the refrigerant temperature of the refrigerant, thereby reducing the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger and / or the second indoor heat exchanger. Through the technical solution provided by the present application, when the air conditioner performs strong dehumidification, due to the auxiliary effect of the first throttling device and the second throttling device, the compressor does not need to operate at a higher operating frequency, thereby reducing the power consumption of the compressor during strong dehumidification, thereby improving the energy efficiency of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0045] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0046] Figure 1 A schematic diagram of the structure of an air conditioner system provided in an embodiment of the present application;

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

[0048] Figure 3 A control flow chart of an air conditioner system during automatic operation provided by an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 1. Refrigerant circulation pipeline; 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 DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0053] In order to at least solve the technical problem that the air conditioner has poor energy efficiency when operating in a strong dehumidification mode, the present application provides an air conditioner system and an air conditioner, which can improve the energy efficiency of the air conditioner when the air conditioner performs strong dehumidification.

[0054] Figure 1 A schematic diagram of the structure of an air conditioner system provided in an embodiment of the present application, referring to Figure 1 An air conditioner system provided in an embodiment of the present application 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 arranged between the outdoor heat exchanger 12 and the first indoor heat exchanger 13, and the second throttling device 16 is arranged between the first indoor heat exchanger 13 and the second indoor heat exchanger 14; the refrigerant circulation pipeline 1 is used for circulating the refrigerant, the first throttling device 15 adjusts the refrigerant temperature of the refrigerant convected to the first indoor heat exchanger 13 by changing its own opening, and the second throttling device 16 adjusts the refrigerant temperature of the refrigerant convected 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 at least used to detect the indoor environmental humidity and send the indoor environmental 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 a dehumidification mode when the indoor ambient humidity is greater than or equal to the humidity threshold; in the dehumidification mode, the opening of the first throttling device 15 and the opening of the second throttling device 16 are controlled according to the indoor ambient humidity 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 A schematic diagram of the connection of a refrigerant circulation pipeline 1 in an air conditioner system provided in an embodiment of the present application, 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 end of the compressor 11 is connected to one end of the outdoor heat exchanger 12 through the 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, and the other end of the second indoor heat exchanger 14 is connected back to the refrigerant inlet end 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 and low-pressure refrigerant entering from the refrigerant inlet end of the compressor 11 is converted into the high-temperature and high-pressure refrigerant output from the refrigerant outlet end of the compressor 11 .

[0061] The outdoor heat exchanger 12 is provided with an exhaust fan 18, and the outdoor heat exchanger 12 is used to exchange heat with the outdoor environment. When the refrigerant flows through the outdoor heat exchanger 12, the exhaust fan 18 discharges air to the outdoor environment, and the refrigerant dissipates its own heat into the air discharged to the outdoor environment. It can be seen that for the high-temperature and high-pressure refrigerant output by the refrigerant outlet of the compressor 11, after 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] The first indoor heat exchanger 13 and the second indoor heat exchanger 14 are provided with exhaust fans 18, and 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 promote the flow of air in the indoor environment. When the air flows through the first indoor heat exchanger 13 and the second indoor heat exchanger 14, the refrigerant absorbs 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 by 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 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 openings of the first throttling device 15 and the second throttling device 16 are not fully opened, the refrigerant temperature of the refrigerant is further reduced when the refrigerant flows through the first throttling device 15 and the second throttling device 16. It can be seen that the first throttling device 15 can adjust the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger 13 by changing its opening, and the second throttling device 16 can adjust the refrigerant temperature of the refrigerant flowing to the second indoor heat exchanger 14 by changing its opening.

[0064] In some specific implementation scenarios of the present application, the first throttling device 15 and the second throttling device 16 can specifically be electric throttling devices. The first throttling device 15 and the second throttling device 16 are both connected to the control module 3, and can receive control instructions from the control module 3 to adjust their own openings.

[0065] When the opening of the first throttling device 15 is at the maximum opening value, the throttling effect of the first throttling device 15 is not effective; when the opening of the first throttling device 15 is not at the maximum opening 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 of the first throttling device 15, that is, the smaller the opening of the first throttling device 15, the better the throttling effect of the first throttling device 15, and the first throttling device 15 can reduce the refrigerant temperature of the refrigerant flowing through itself more.

[0066] Similarly, when the opening of the second throttling device 16 is at the maximum opening value, the throttling effect of the second throttling device 16 is not effective; when the opening of the second throttling device 16 is not at the maximum opening 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 second throttling device 16 can reduce the refrigerant temperature of the refrigerant flowing through itself more.

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

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

[0069] In some specific implementations of the present application, the control module 3 may be a control mainboard of the air conditioner. In a feasible embodiment of the present application, the humidity threshold preset in the control module 3 is pre-determined by a technician and stored in the control module 3 .

[0070] In the technical solution provided by the embodiment of the present application, when the control module 3 controls the air conditioner to operate in the dehumidification mode, the control module 3 controls the opening of the first throttling device 15 and the opening of the second throttling device 16 according to the indoor environmental humidity. Based on the characteristic that the throttling device can adjust the refrigerant temperature of the refrigerant flowing through itself, the first throttling device 15 and the second throttling device 16 assist in reducing the refrigerant temperature of the refrigerant, thereby reducing the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger 13 and / or the second indoor heat exchanger 14. Through the technical solution provided by the present application, when the air conditioner is dehumidified, 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 higher operating frequency, thereby reducing the power consumption of the compressor 11 during dehumidification, thereby improving the energy efficiency of the air conditioner.

[0071] In a feasible embodiment of the present application, the detection module 2 includes:

[0072] A temperature and humidity detection unit, which is used to detect indoor environmental humidity, indoor environmental temperature and outdoor environmental temperature;

[0073] A first temperature sensing package, which is disposed in the first indoor heat exchanger 13 and is used to detect a first inner tube temperature; wherein the first inner tube temperature is an inner tube temperature of the first indoor heat exchanger 13;

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

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

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

[0077] In a feasible embodiment of the present 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 a preset difference threshold;

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

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

[0081] The user set temperature is the temperature at which the user expects the air conditioner to currently operate, and the user set temperature can be input by the user through the wire controller of the air conditioner. The difference threshold is pre-stored in the control module 3, and the difference threshold can be set by a technician.

[0082] In the first dehumidification mode, the control module 3 controls the opening of the first throttling device 15 to be 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 environment temperature and the user set temperature is less than the preset difference threshold, the humidity of the current indoor environment is high but the temperature basically meets the user's expectations. The opening of the first throttling device 15 is controlled to be the maximum opening value, so that the first throttling device 15 has no throttling effect on the refrigerant, and the refrigerant temperature of the refrigerant flowing from the outdoor heat exchanger 12 through the first throttling device 15 to the first indoor heat exchanger 13 remains basically unchanged; the opening of the second throttling device 16 is controlled to be reduced according to the indoor environment humidity, so that the second throttling device 16 has a throttling effect on the refrigerant, and the refrigerant temperature of the refrigerant flowing from the first indoor heat exchanger 13 through the second throttling device 16 to the second indoor heat exchanger 14 is reduced.

[0084] In the first dehumidification mode, the first indoor heat exchanger 13 plays a heat recovery effect, and the second indoor heat exchanger 14 plays a dehumidification effect. The first dehumidification mode is aimed at the situation that the ambient temperature basically meets the user's expectations and the indoor humidity is high. It can reduce the indoor ambient humidity while reducing the indoor ambient temperature, which can improve the comfort experience of the air conditioner.

[0085] In a feasible embodiment of the present 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 environment humidity is greater than or equal to the humidity threshold and the difference between the indoor environment temperature and the user set temperature is greater than or equal to the difference threshold;

[0087] In the second dehumidification mode, the opening of the first throttling device 15 and the opening of the second throttling device 16 are controlled to be reduced according to the indoor ambient humidity 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 of the first throttling device 15 to decrease according to the indoor ambient humidity, and controls the opening of the second throttling device 16 to decrease according to the indoor ambient humidity.

[0089] When the difference between the indoor environment temperature and the user set temperature is greater than or equal to the preset difference threshold, the humidity of the current indoor environment is high and the temperature deviates greatly from the user's expectation. According to the indoor environment humidity, the opening of the first throttling device 15 is controlled to be reduced, so that the first throttling device 15 has a throttling effect on the refrigerant, and the refrigerant temperature of the refrigerant flowing from the outdoor heat exchanger 12 through the first throttling device 15 to the first indoor heat exchanger 13 is reduced for the first time; according to the indoor environment humidity, the opening of the second throttling device 16 is controlled to be reduced, so that the second throttling device 16 has a throttling effect on the refrigerant, and the refrigerant temperature of the refrigerant flowing from the first indoor heat exchanger 13 through the second throttling device 16 to the second indoor heat exchanger 14 is reduced for the second time. It can be seen that the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger 13 and the refrigerant flowing to the second indoor heat exchanger 14 is significantly reduced by the first throttling device 15 and the second throttling device 16.

[0090] In the second dehumidification mode, the first indoor heat exchanger 13 has a dehumidification effect, and the second indoor heat exchanger 14 also has a dehumidification effect. Therefore, in the second dehumidification mode, even if the compressor 11 does not operate at a higher operating frequency, it can still ensure the dehumidification effect of the first indoor heat exchanger 13 and the second indoor heat exchanger 14. Under the premise of ensuring the overall dehumidification effect of the air conditioner, the compressor 11 can be operated at a lower operating frequency, which effectively improves the overall energy efficiency of the air conditioner.

[0091] In a feasible embodiment of the present application, the second control unit includes:

[0092] An acquisition subunit, used to acquire the first inner tube temperature, the second inner tube temperature, the indoor environment temperature and the indoor environment humidity;

[0093] A first calculation subunit, used to calculate the dew point temperature according to the indoor ambient temperature and the indoor ambient humidity;

[0094] A second calculation subunit is used to calculate a target inner tube temperature according to 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 first inner tube temperature is equal to the target inner tube temperature, and is used to control the opening of the second throttling device 16 to decrease so that the second inner tube temperature is equal to the target inner tube temperature.

[0096] Specifically, the dew point temperature is first calculated based on the indoor ambient temperature and indoor ambient humidity. The dew point temperature refers to the temperature at which the air is cooled to saturation when the water vapor content in the air remains unchanged and the air pressure remains constant. It can be seen that the dew point temperature is actually the condensation temperature of water vapor in the air.

[0097] In a feasible embodiment of the present application, the indoor ambient temperature and the indoor ambient humidity may be processed based on a dew point temperature function to calculate the dew point temperature. The dew point temperature function is a prior art and will not be described in detail herein.

[0098] After the dew point temperature is calculated, the target inner tube temperature is calculated according to the dew point temperature. In a feasible embodiment of the present application, the dew point temperature can be directly determined as the target inner tube temperature.

[0099] After the target inner tube temperature is obtained, the opening of the first throttling device 15 is controlled to decrease so that the first inner tube temperature is equal to the target inner tube temperature, and the opening of the second throttling device 16 is controlled to decrease so that the second inner tube temperature is equal to the target inner tube temperature. By controlling the inner tube temperature of the first heat exchanger and the inner tube temperature of the second heat exchanger to the target inner tube temperature, the water vapor contained in the indoor air is condensed when the indoor air passes through the first indoor heat exchanger 13 and the second heat exchanger, thereby achieving a dehumidification effect.

[0100] In a feasible embodiment of the present application, the second computing subunit includes:

[0101] Get the grandchild unit to get the outdoor ambient temperature;

[0102] A first determination unit is used to determine a first temperature correction value according to the outdoor ambient temperature; wherein the first temperature correction value is positively correlated with the outdoor ambient temperature;

[0103] The second determination unit is used to determine the difference between the dew point temperature and the first temperature correction value as the target inner tube temperature.

[0104] Specifically, the outdoor ambient temperature will affect the heat exchange effect 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 ambient temperature, and the worse the heat exchange effect of the outdoor heat exchanger 12. Therefore, the outdoor ambient temperature will affect the refrigerant temperature of the refrigerant flowing from the outdoor heat exchanger 12 to the first indoor heat exchanger 13 and the second indoor heat exchanger 14, so the target inner tube temperature needs to be corrected according to the outdoor ambient temperature.

[0105] In this embodiment, the first temperature correction value is determined according to the outdoor ambient temperature, 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, and the first temperature correction value is a value greater than 0.

[0106] The dew point temperature is the condensation temperature of water vapor in the air, and the 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, and the difference between the dew point temperature and the first temperature correction value is determined as the target inner tube temperature. Therefore, when the outdoor ambient temperature is higher, the target inner tube temperature is lower.

[0107] In this embodiment, the control module 3 may pre-store an outdoor ambient temperature-first temperature correction value mapping table, and when the control module 3 obtains the outdoor ambient temperature, it searches the outdoor ambient temperature-first temperature correction value mapping table to obtain the first temperature correction value. The second temperature correction value is similar.

[0108] In a feasible embodiment of the present application, the opening of the first throttling device 15 and the opening of the second throttling device 16 can be reduced by the principle of feedback regulation. In this embodiment, the control subunit includes:

[0109] A first calculation unit, used for calculating a first temperature difference between a first inner tube temperature and a target inner tube temperature;

[0110] A second calculation unit, used for calculating a second temperature difference between the second inner tube temperature and the target inner tube temperature;

[0111] a first control unit, configured 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, a temperature difference-target opening mapping table may be pre-stored in the control module 3. After the control module 3 obtains the outdoor ambient temperature, it searches the temperature difference-opening mapping table to obtain the target opening of the first throttling device 15 and the target opening of the second throttling device 16, thereby controlling the opening of the first throttling device 15 and the opening of the second throttling device 16 to be reduced to the target opening.

[0114] In a feasible embodiment of the present application, after determining the target inner tube temperature, the first temperature difference and the second temperature difference are detected every t seconds, the opening of the first throttling device 15 is controlled according to the first temperature difference, and the opening of the second throttling device 16 is controlled according to 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 the present application, t can be set to 10s.

[0115] In a feasible embodiment of the present application, the control module 3 can also automatically control the air conditioner to operate in a cooling mode. In the cooling mode, the first indoor heat exchanger 13 and the second indoor heat exchanger 14 are used to cool the indoor environment without having a dehumidification 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 a cooling mode when the indoor ambient humidity is less than a humidity threshold;

[0118] In the cooling mode, the target air outlet temperature of the air conditioner is determined according to the indoor ambient humidity and the temperature set by the user. 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 linked and controlled according to the target air outlet temperature so that the air conditioner discharges air at the target air outlet temperature.

[0119] In a feasible embodiment of the present application, the third control unit includes:

[0120] A first determining subunit is used to determine a second temperature correction value according to the indoor environmental humidity; wherein the second temperature correction value is negatively correlated with the indoor environmental humidity;

[0121] A second determination subunit, 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 control 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 in a linked manner according to the target air outlet temperature.

[0123] Specifically, when the indoor humidity is less than the humidity threshold, the indoor humidity is low, and the air conditioner only needs to be controlled to cool. In this embodiment, since the indoor humidity affects the user's perceived temperature, the user-set temperature needs to be adaptively adjusted according to the indoor humidity so that the target air outlet temperature of the air conditioner can meet the user's expectations.

[0124] It can be seen from the NOAA heat index that when the humidity is high, the user's perceived temperature is relatively high. Therefore, the difference between the user-set temperature and the second temperature correction value is determined as the target air outlet temperature, and the second temperature correction value is positively correlated with the indoor environmental humidity, and the second temperature correction value is a value greater than 0. That is, the target air outlet temperature will be slightly lower than the user-set temperature, and the higher the indoor environmental humidity, the lower the target air outlet temperature will be relative to the user-set temperature.

[0125] Through the technical solution provided by this embodiment, the target air outlet temperature of the air conditioner is adaptively adjusted, taking into account the current indoor environmental humidity, so that the target air outlet temperature of the air conditioner can better meet user expectations.

[0126] In a feasible embodiment of the present application, the control module 3 can be set to automatically control the air conditioning system to operate. Figure 3 A schematic diagram of a flow chart of an air conditioner system in automatic operation provided by an embodiment of the present application, referring to 3, when the air conditioner system is in automatic operation, the control flow of the control module 3 is as follows:

[0127] S301: receiving an automatic operation instruction input by a user;

[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 operation mode;

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

[0132] S306: Compare the indoor environment humidity H with the 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 environment 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 process, b is the set difference threshold.

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

[0139] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0140] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An air conditioner system, characterized in that: The air conditioner 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 arranged between the outdoor heat exchanger and the first indoor heat exchanger, and the second throttling device is arranged between the first indoor heat exchanger and the second indoor heat exchanger. The refrigerant circulation pipeline is used for circulating refrigerant. The first throttling device adjusts the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger by changing its own opening, and the second throttling device adjusts the refrigerant temperature of the refrigerant flowing to the second indoor heat exchanger by changing its own opening. The detection module is connected to the control module; the detection module is at least used to detect the indoor environmental humidity and send the indoor environmental 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 a dehumidification mode when the indoor ambient humidity is greater than or equal to a humidity threshold; in the dehumidification mode, the opening of the first throttling device and the opening of the second throttling device are controlled according to the indoor ambient humidity to reduce the refrigerant temperature of the refrigerant flowing to the first indoor heat exchanger and / or the second indoor heat exchanger.

2. The air conditioner system according to claim 1, characterized in that: The detection module comprises: A temperature and humidity detection unit, the temperature and humidity detection unit is used to detect the indoor environmental humidity, indoor environmental temperature and outdoor environmental temperature; A first temperature sensing package, the first temperature sensing package is arranged in the first indoor heat exchanger, and the first temperature sensing package is used to detect a first inner tube temperature; wherein the first inner tube temperature is an inner tube temperature of the first indoor heat exchanger; A second temperature sensing package, wherein the second temperature sensing package is arranged in the second indoor heat exchanger, and the second temperature sensing package is used to detect the second inner tube temperature; wherein the second inner tube temperature is the inner tube temperature of the second indoor heat exchanger.

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

4. The air conditioner system according to claim 3, characterized in that: The control module comprises 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 environment humidity is greater than or equal to a humidity threshold and the difference between the indoor environment temperature and the user set temperature is greater than or equal to the difference threshold; In the second dehumidification mode, the opening of the first throttling device and the opening of the second throttling device are controlled to be reduced according to the indoor ambient humidity to reduce the refrigerant temperature flowing to the first indoor heat exchanger and the refrigerant flowing to the second indoor heat exchanger.

5. The air conditioner system according to claim 4, characterized in that: The second control unit comprises: an acquisition subunit, configured to acquire the first inner tube temperature, the second inner tube temperature, the indoor environment temperature, and the indoor environment humidity; A first calculation subunit, configured to calculate a dew point temperature according to the indoor environment temperature and the indoor environment humidity; a second calculation subunit, configured to calculate a target inner tube temperature according to the dew point temperature; The control subunit is used to control the opening of the first throttling device to decrease so that the first inner tube temperature is equal to the target inner tube temperature, and is used to control the opening of the second throttling device to decrease so that the second inner tube temperature is equal to the target inner tube temperature.

6. The air conditioner system according to claim 5, characterized in that: The second computing subunit comprises: Obtaining a grandchild unit, for obtaining the outdoor ambient temperature; A first determination unit is used to determine a first temperature correction value according to 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 determination 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 conditioner system according to claim 5, characterized in that: The control subunit includes: A first calculation unit, configured to calculate a first temperature difference between the first inner tube temperature and the target inner tube temperature; A second calculation unit, configured to calculate a second temperature difference between the second inner tube temperature and the target inner tube temperature; a first control unit, configured 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 conditioner system according to claim 3, characterized in that: The control module further comprises a third control unit, wherein: The third control unit is used for controlling the air conditioner to operate in a cooling mode when the indoor environmental humidity is less than the humidity threshold; In the cooling mode, the target air outlet temperature of the air conditioner is determined according to the indoor ambient humidity and the user-set temperature, and the opening degree of the first throttling device, the opening degree of the second throttling device and the operating frequency of the compressor are linked and controlled according to the target air outlet temperature so that the air conditioner discharges air at the target air outlet temperature.

9. The air conditioner system according to claim 8, characterized in that: The third control unit comprises: A first determining subunit is used to determine a second temperature correction value according to the indoor environmental humidity; wherein the second temperature correction value is positively correlated with the indoor environmental humidity, and the second temperature correction value is a value greater than 0; a second determining subunit, configured 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 control the opening degree of the first throttling device, the opening degree of the second throttling device and the operating frequency of the compressor in a linkage manner according to the target air outlet temperature.

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

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