Methods, apparatus, air conditioners and storage media for fresh air control in air conditioners

Abstract

This application relates to the field of smart home appliance technology, and discloses a method for controlling fresh air in an air conditioner. The outdoor unit is equipped with a waterless humidification module, and the indoor unit includes a main heat exchanger and an auxiliary heat exchanger connected in parallel. The method includes: the heating module of the waterless humidification module heats the collected outdoor air to obtain dry, hot fresh air; adjusting the rotation speed of the rotary module of the waterless humidification module according to the moisture content of the dry, hot fresh air to match the moisture content of the indoor air; delivering the dry, hot fresh air matched to the indoor air moisture content to the indoor unit; activating the main heat exchanger to cool the mixture of the dry, hot fresh air and indoor air, and then shutting off the auxiliary heat exchanger; and finally delivering the cooled mixture to the room. This method controls the humidity and temperature of the outdoor air, ensuring a comfortable indoor environment. This application also discloses a device, an air conditioner, and a storage medium for controlling fresh air in an air conditioner.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a method, apparatus, air conditioner, and storage medium for controlling fresh air in an air conditioner. Background Technology

[0002] When air conditioners are turned on in cooling mode during the summer, doors and windows are usually closed to ensure cooling efficiency. However, after a long time, the indoor air becomes stagnant, the concentration of carbon dioxide increases, and the air becomes stale, which can easily cause discomfort. Therefore, it is necessary to introduce outdoor air into the room to refresh the indoor air.

[0003] However, in summer, outdoor air is humid and hot, and directly introducing it indoors will make the indoor air humid and hot, reducing the comfort of the environment. Summary of the Invention

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] This disclosure provides a method, apparatus, air conditioner, and storage medium for controlling fresh air in an air conditioner, in order to improve air comfort when introducing outdoor air into the room during the summer.

[0006] In some embodiments, the outdoor unit of the air conditioner is equipped with a waterless humidification module, and the indoor unit includes a main heat exchanger and an auxiliary heat exchanger connected in parallel. The method includes: the heating module of the waterless humidification module heats the collected outdoor air to obtain dry and hot fresh air; adjusting the rotation speed of the rotary wheel module of the waterless humidification module according to the moisture content of the dry and hot fresh air, so that the moisture content of the dry and hot fresh air delivered by the waterless humidification module matches the moisture content of the indoor air; delivering the dry and hot fresh air that matches the moisture content of the indoor air to the indoor unit, starting the main heat exchanger to cool the mixed air formed by the dry and hot fresh air and the indoor air, and turning off the auxiliary heat exchanger; and delivering the cooled mixed air to the room.

[0007] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the aforementioned method for controlling fresh air in an air conditioner when the program instructions are executed.

[0008] In some embodiments, the air conditioner includes an outdoor unit equipped with a waterless humidification module, and an indoor unit comprising a main heat exchanger, an auxiliary heat exchanger, and the aforementioned device for humidification control of the air conditioner connected in parallel. The main heat exchanger is connected to the outdoor heat exchanger via a first circulation pipeline, and a first on-off valve is provided on the first circulation pipeline, located between the main heat exchanger and the outdoor heat exchanger. The auxiliary heat exchanger is connected to the outdoor heat exchanger via a second circulation pipeline, and a second on-off valve and a check valve are provided on the second circulation pipeline, located between the auxiliary heat exchanger and the outdoor heat exchanger, and between the auxiliary heat exchanger and the outdoor heat exchanger. A branch pipeline is connected to the first circulation pipeline, with one end of the branch pipeline connected to the first circulation pipeline between the main heat exchanger and the first on-off valve, and the other end of the branch pipeline connected to the second circulation pipeline, located between the auxiliary heat exchanger and the check valve. A third on-off valve is provided on the branch pipeline.

[0009] In some embodiments, the storage medium stores program instructions that, when executed, perform the aforementioned method for controlling fresh air in an air conditioner.

[0010] The method, apparatus, air conditioner, and storage medium for fresh air control in air conditioners provided in this disclosure can achieve the following technical effects:

[0011] The outdoor air is heated by the heating module of the waterless humidification module, and the rotation speed of the rotating wheel module of the waterless humidification module is adjusted to control the humidity of the dry and hot fresh air. Then, the temperature of the mixed air formed by the dry and hot fresh air and the indoor air is controlled by cooling the mixed air through the main heat exchanger. Thus, the outdoor air is treated to obtain a suitable temperature and humidity, ensuring the comfort of the indoor environment.

[0012] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0014] Figure 1 This is a schematic diagram of a refrigerant circulation system provided in an embodiment of this disclosure;

[0015] Figure 2 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0016] Figure 3 This is a schematic diagram of a method for humidification control of an air conditioner provided in an embodiment of this disclosure;

[0017] Figure 4 This is a schematic diagram illustrating the adjustment of the rotation speed of the rotary wheel module of the waterless humidification module according to the moisture content of the dry hot fresh air in a method for humidification control of an air conditioner provided in this embodiment of the present disclosure.

[0018] Figure 5 This is a schematic diagram of a method for humidifying control of an air conditioner provided in this embodiment, in which the main heat exchanger is activated to cool the mixed air and the auxiliary heat exchanger is turned off.

[0019] Figure 6 This is a schematic diagram illustrating the control of the opening of the first on / off valve in a method for controlling humidification in an air conditioner provided in an embodiment of this disclosure;

[0020] Figure 7 This is a schematic diagram of a method for humidifying an air conditioner provided in this embodiment of the present disclosure, in which the opening degree of a first on / off valve is controlled according to a preset temperature;

[0021] Figure 8 This is a schematic diagram of another method for humidifying an air conditioner provided in this embodiment of the present disclosure, in which the opening degree of the first on-off valve is controlled according to a preset temperature;

[0022] Figure 9 This is a schematic diagram illustrating the method for humidification control of an air conditioner provided in this disclosure, in which the dew point temperature at the location of the temperature and humidity sensor is determined based on the temperature and humidity detected by the temperature and humidity sensor.

[0023] Figure 10 This is a schematic diagram of another method for humidification control of an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 11 This is a schematic diagram of a device for humidification control of an air conditioner provided in an embodiment of this disclosure.

[0025] Figure label:

[0026] 001, Compressor; 002, Outdoor heat exchanger; 003, Waterless humidification module; 004, Water washing module; 005, Temperature and humidity sensor; 100, Circulation pipeline; 101, First circulation pipeline; 102, Second circulation pipeline; 200, Main heat exchanger; 201, First on / off valve; 202, First temperature sensor; 300, Auxiliary heat exchanger; 301, Second on / off valve; 302, Check valve; 303, Second temperature sensor; 400, Branch pipeline; 401, Third on / off valve; 500, Four-way valve. Detailed Implementation

[0027] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0028] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0029] Unless otherwise stated, the term "multiple" means two or more.

[0030] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0031] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0032] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0033] Combination Figure 1 As shown, this disclosure provides a schematic diagram of a refrigerant circulation system. Figure 1As shown, the refrigerant circulation system includes: a compressor 001, an outdoor heat exchanger 002, a main heat exchanger 200, an auxiliary heat exchanger 300, and branch pipes 400. The compressor 001 is connected to the outdoor heat exchanger 002 via a circulation pipe 100. The circulation pipe 100 includes a first circulation pipe 101 and a second circulation pipe 102 arranged in parallel. The main heat exchanger 200 is connected to the first circulation pipe 101. A first on / off valve 201 is installed on the first circulation pipe 101, and the first on / off valve 201 is located between the main heat exchanger 200 and the outdoor heat exchanger 002. The auxiliary heat exchanger 300 is connected to the second circulation pipe 102. A second on / off valve 301 and a one-way valve 302 are installed on the loop pipe 102. The second on / off valve 301 is located between the auxiliary heat exchanger 300 and the outdoor heat exchanger 002, and the one-way valve 302 is located between the auxiliary heat exchanger 300 and the compressor 001. One end of the branch pipe 400 is connected to the first circulation pipe 101, and the connection point with the first circulation pipe 101 is located between the main heat exchanger 200 and the first on / off valve 201. The other end is connected to the second circulation pipe 102, and the connection point with the second circulation pipe 102 is located between the auxiliary heat exchanger 300 and the one-way valve 302. A third on / off valve 401 is installed on the branch pipe 400.

[0034] Using the refrigerant circulation system provided in this embodiment, when the refrigerant circulation system is in refrigeration cycle mode, with the first on / off valve 201, the second on / off valve 301, and the one-way valve 302 all in the open state, and the third on / off valve 401 in the closed state, the compressor 001 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state, and delivers it to the outdoor heat exchanger 002 through the circulation pipeline 100 for liquefaction. The liquefied refrigerant can enter the main heat exchanger 200 and the auxiliary heat exchanger 300, and evaporate in the main heat exchanger 200 and the auxiliary heat exchanger 300, thereby enabling both the main heat exchanger 200 and the auxiliary heat exchanger 300 to have a cooling effect; when the refrigerant circulation system is in heating cycle mode... With the second on-off valve 301 and the third on-off valve 401 both in the open state and the first on-off valve 201 in the closed state, the compressor 001 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state, and delivers it to the main heat exchanger 200 for liquefaction through the circulation pipeline 100. The liquefied refrigerant then enters the auxiliary heat exchanger 300 and evaporates within it, thus giving the auxiliary heat exchanger 300 a cooling effect. Consequently, regardless of whether the refrigerant circulation system is in a cooling or heating cycle, the auxiliary heat exchanger 300 can perform cooling, ensuring that it can always condense the passing airflow and produce liquid water, meeting the user's needs.

[0035] It is worth noting that when the refrigerant circulation system is in refrigeration cycle, both the main heat exchanger 200 and the auxiliary heat exchanger 300 are evaporators, and the outdoor heat exchanger 002 is a condenser; when the refrigerant circulation system is in heating cycle, the main heat exchanger 200 is a condenser, and both the auxiliary heat exchanger 300 and the outdoor heat exchanger 002 are evaporators.

[0036] Optionally, the one-way valve 302 includes an inlet end and an outlet end, with the inlet end located close to the auxiliary heat exchanger 300 and the outlet end located away from the auxiliary heat exchanger 300. This ensures that the refrigerant can only flow from the inlet end to the outlet end and cannot flow in the reverse direction. Therefore, the refrigerant in the circulation pipeline 100 can only flow from the outdoor heat exchanger 002 through the auxiliary heat exchanger 300 to the compressor 001, during which the auxiliary heat exchanger 300 provides a cooling effect. Alternatively, the refrigerant can flow from the compressor 001 to the main heat exchanger 200, then from the main heat exchanger 200 to the auxiliary heat exchanger 300, and finally from the auxiliary heat exchanger 300 to the outdoor heat exchanger 002. In this process, the auxiliary heat exchanger 300 also provides a cooling effect. Thus, regardless of whether the circulation system is in cooling or heating mode, cooling can be achieved using the auxiliary heat exchanger 300, meeting the user's needs.

[0037] Optionally, the refrigerant circulation system also includes a four-way valve 500. One end of the four-way valve 500 is connected to the compressor 001, and the other end is connected to the circulation pipeline 100. When the four-way valve 500 is in the first passage, the circulation system operates in a refrigeration cycle, and when the four-way valve 500 is in the second passage, the circulation system operates in a heating cycle. Thus, when the four-way valve 500 is in the first passage, the circulation system operates in a refrigeration cycle. The compressor 001 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state, which is then transported to the outdoor heat exchanger 002 via the circulation pipe 100 for liquefaction. At this time, the first shut-off valve 201, the second shut-off valve 301, and the check valve 302 are opened, while the third shut-off valve 401 is closed. The liquefied refrigerant can then enter both the main heat exchanger 200 and the auxiliary heat exchanger 300, where it evaporates, thus providing a cooling effect to both. When the four-way valve 500 is in the second passage, the circulation... When the refrigerant system operates in heating cycle, the second on / off valve 301 and the third on / off valve 401 are opened, and the first on / off valve 201 is closed. The compressor 001 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state, and delivers it to the main heat exchanger 200 for liquefaction through the circulation pipeline 100. The liquefied refrigerant then enters the auxiliary heat exchanger 300 and evaporates within it, thus giving the auxiliary heat exchanger 300 a cooling effect. Consequently, regardless of whether the refrigerant circulation system is in cooling or heating cycle mode, the auxiliary heat exchanger 300 can perform cooling, ensuring that it can always condense the passing airflow and produce liquid water, meeting the user's needs.

[0038] Optionally, the refrigerant circulation system further includes: a temperature and humidity sensor 005, a first temperature sensor 202, and a second temperature sensor 303. The temperature and humidity sensor 005 is installed in the duct before the auxiliary heat exchanger 300 to detect the temperature and humidity of the humid fresh air before it enters the indoor unit, thereby obtaining the dew point temperature at that location. The first temperature sensor 202 is installed inside the indoor unit and located on the heat exchange coil of the main heat exchanger 200; the second temperature sensor 303 is installed inside the indoor unit and located on the heat exchange coil of the auxiliary heat exchanger 300. Thus, by using the first temperature sensor 202 installed on the main heat exchanger 200, the surface temperature of the main heat exchanger 200 can be detected. By comparing the temperature of the main heat exchanger 200 with the dew point temperature, the opening degree of the first on / off valve 201 can be controlled to keep the temperature of the main heat exchanger 200 below or above the dew point temperature. A second temperature sensor 303 installed on the auxiliary heat exchanger 300 can detect the surface temperature of the auxiliary heat exchanger 300. By comparing the temperature of the auxiliary heat exchanger 300 with the dew point temperature, the opening degree of the second on / off valve 301 can be controlled to keep the temperature of the auxiliary heat exchanger 300 below or above the dew point temperature. Based on the user's airflow requirements and using the acquired dew point temperature, the temperatures at the main heat exchanger 200 and the auxiliary heat exchanger 300 can be controlled, resulting in more comfortable airflow and an improved user experience.

[0039] Optionally, the first on / off valve 201, the second on / off valve 301, and the third on / off valve 401 are all electronic expansion valves. This disclosure provides an air conditioner including the aforementioned refrigerant circulation piping. See also... Figure 2 The air conditioner includes an indoor unit and an outdoor unit. A waterless humidification module 003 and an outdoor heat exchanger 002 are installed in the outdoor unit, while a water-washing module 004 is installed in the indoor unit. The waterless humidification module 003 collects outdoor air B and has a heating module that heats the outdoor air B to obtain dry, hot fresh air C. The waterless humidification module 003 delivers the dry, hot fresh air C to the indoor unit. The main heat exchanger 200 cools the mixture of the dry, hot fresh air and indoor air, while the auxiliary heat exchanger 300 is shut off. The cooled mixture A is then delivered indoors.

[0040] Combination Figure 3 As shown, this disclosure provides a method for humidification control in an air conditioner, comprising:

[0041] S01, the heating module of the waterless humidification module of the air conditioner heats the collected outdoor air to obtain dry and hot fresh air.

[0042] S02, the air conditioner adjusts the rotation speed of the waterless humidification module's rotor module according to the moisture content of the dry and hot fresh air, so that the moisture content of the dry and hot fresh air delivered by the waterless humidification module matches the moisture content of the indoor air.

[0043] S03, the air conditioner delivers dry and hot fresh air that matches the humidity of the indoor air to the indoor unit, starts the main heat exchanger to cool the mixed air formed by the dry and hot fresh air and the indoor air, and shuts down the auxiliary heat exchanger.

[0044] S04, the air conditioner delivers the cooled mixed air into the room.

[0045] The waterless humidification module includes a heating module. After collecting outdoor air, the heating module uses a heating wire to heat the outdoor air, controlling the humidity at 25%-20% and the temperature at 30℃-35℃, thus producing dry, hot fresh air and achieving preliminary dehumidification of the outdoor air. The waterless humidification module also has a rotary module. By adjusting the rotation speed of the rotary module, the moisture content in the dry, hot fresh air can be adjusted; the faster the rotation speed, the greater the moisture content. Adjusting the rotation speed of the rotary module according to the moisture content of the dry, hot fresh air ensures that the moisture content of the delivered dry, hot fresh air matches the moisture content of the indoor air, further controlling the humidity of the dry, hot fresh air. Inside the indoor unit, the dry, hot fresh air mixes with indoor air from the room, forming a mixed airflow. The air conditioner starts the main heat exchanger and shuts down the auxiliary heat exchanger, allowing the main heat exchanger to cool the mixed air. The fan module then delivers the cooled mixed air into the room. The moisture content of the hot, dry fresh air is matched with the moisture content of the indoor air. This can be either equal or with a certain margin of error. The specific range of error can be determined based on actual needs, and this embodiment does not impose any limitations. The temperature of the fresh air supplied to the room is controlled at 20℃-24℃, and the humidity at 45%-60%.

[0046] In this embodiment, since the outdoor air has a high humidity content in summer, the outdoor air is initially dehumidified by heating the heating module of the waterless humidification module. Then, the rotation speed of the rotary module of the waterless humidification module is adjusted to further control the humidity of the hot, dry air, ensuring that the humidity content of the hot, dry air matches that of the indoor air. This prevents significant fluctuations in indoor humidity caused by the delivery of the hot, dry air. After humidity control of the hot, dry air, the mixture of the hot, dry air and indoor air is cooled by the main heat exchanger to prevent significant fluctuations in indoor air temperature caused by the air blown out by the air conditioner. This humidity and temperature control of the outdoor air ensures that it reaches suitable temperature and humidity before being delivered indoors, thereby guaranteeing a comfortable indoor environment.

[0047] Optionally, see Figure 4 The rotation speed of the waterless humidification module's impeller is adjusted according to the moisture content of the dry, hot fresh air, including:

[0048] S41, the air conditioner detects the moisture content of the dry, hot fresh air in the channel before the auxiliary heat exchanger.

[0049] S42, if the humidity content of the dry hot fresh air does not match the humidity content of the indoor air, the speed of the rotor module will be gradually increased or decreased according to the current humidity content of the dry hot fresh air.

[0050] S43, the air conditioner stops adjusting the rotation speed of the rotating module until the humidity of the current dry and hot fresh air matches the humidity of the indoor air.

[0051] A temperature and humidity sensor is installed in the fresh air duct before the auxiliary heat exchanger to detect the temperature and humidity of the hot, dry fresh air passing through. Using an enthalpy-humidity chart, the moisture content of the air corresponding to the humidity of the hot, dry fresh air can be determined. This moisture content is compared with the moisture content of the indoor air. If they do not match, the rotation speed of the rotating module is gradually increased or decreased based on the current moisture content of the hot, dry fresh air to change its humidity. The rotation speed is adjusted until the current moisture content of the hot, dry fresh air matches the moisture content of the indoor air, at which point the adjustment of the rotating module's speed stops. If the moisture content of the hot, dry fresh air matches the moisture content of the indoor air, no adjustment of the rotating module's speed is necessary.

[0052] In this embodiment of the disclosure, before the dry and hot fresh air enters the indoor unit, the moisture content of the detector is detected, that is, the moisture content of the dry and hot fresh air in the channel before the auxiliary heat exchanger is detected and compared with the moisture content of the indoor air. If the two do not match, the rotation speed of the rotary module is adjusted to adjust the moisture content of the dry and hot fresh air. This can control the moisture content of the dry and hot fresh air within a suitable error range with the moisture content of the indoor air, so as to ensure that the humidity of the indoor air is not greatly affected.

[0053] Optionally, see Figure 5 Start the main heat exchanger to cool the mixed air and shut down the auxiliary heat exchanger, including:

[0054] S51, the air conditioner controls the second and third on / off valves to close, thus shutting down the auxiliary heat exchanger.

[0055] S52, the air conditioner controls the first on / off valve to open, causing the main heat exchanger to start and cool the mixed air.

[0056] In summer, the air conditioner operates in a cooling cycle, while simultaneously controlling the second and third on / off valves to close, keeping the auxiliary heat exchanger in a closed state; at the same time, it controls the first on / off valve to open, starting the main heat exchanger to cool the mixed air, so that the temperature of the mixed air matches the indoor temperature, for example, lowering the temperature of the mixed air to 20℃-24℃.

[0057] In this embodiment of the disclosure, after the dry hot fresh air is mixed with the indoor air, a mixed air is formed. The temperature of the mixed air is relatively high. In order to ensure that the indoor temperature does not fluctuate too much, the auxiliary heat exchanger is shut down by controlling the second on-off valve and the third on-off valve to close. At the same time, the main heat exchanger is turned on by controlling the first on-off valve to open. The main heat exchanger is used to cool the mixed air so that the temperature of the mixed air is suitable.

[0058] Optionally, see Figure 6 Controlling the opening of the first on / off valve includes:

[0059] S61, the air conditioner determines the coil temperature of the main heat exchanger as the preset temperature based on the user-set cooling temperature; wherein, the preset temperature is lower than the user-set cooling temperature.

[0060] S62, the air conditioner starts the compressor and controls the compressor frequency to rise to the preset frequency.

[0061] S63, the air conditioner controls the opening degree of the first on / off valve according to the preset temperature.

[0062] In summer, users turn on the air conditioner to cool the indoor air and set the cooling temperature. The coil temperature of the main heat exchanger should be slightly lower than the user-set cooling temperature. This coil temperature is set as the preset temperature. Since the preset temperature is lower than the user-set cooling temperature, the main heat exchanger cools the mixed air at the preset temperature. The air conditioner starts the compressor and gradually increases the compressor frequency to the preset frequency range. Then, based on the preset temperature, the opening degree of the first on / off valve is controlled. For example, if the indoor temperature is 28℃ and the user-set cooling temperature is 22℃, the coil temperature of the main heat exchanger should be lower than 22℃. According to the control logic, the coil temperature of the main heat exchanger can be set to 20℃, thus the preset temperature is 20℃. Based on the temperature difference between the preset temperature and the indoor temperature, as well as the outdoor temperature, the compressor starts and gradually increases the compressor frequency to the preset frequency range. Then, based on the preset temperature, the opening degree of the first on / off valve is controlled to control the main heat exchanger to cool the mixed air at the preset temperature. This is because the opening degree of the first on / off valve affects the refrigerant flow rate, thereby affecting the cooling temperature of the main heat exchanger. It should be noted that the specific method of starting the compressor based on the temperature difference between the preset temperature and the indoor temperature, as well as the outdoor temperature, and gradually increasing the compressor frequency to the preset frequency range, is well known to those skilled in the art and will not be described in detail here. The preset frequency range can be determined according to actual needs, and this disclosure does not limit it in any way.

[0063] In this embodiment of the disclosure, by setting a preset temperature slightly lower than the user-set cooling temperature as the cooling temperature of the main heat exchanger for the mixed air, the temperature of the fresh air delivered to the room by the air conditioner can be made to better meet the user's temperature requirements; the auxiliary heat exchanger is shut down by closing the second and third on / off valves; since the opening degree of the first on / off valve affects the refrigerant flow rate into the main heat exchanger, the cooling temperature of the main heat exchanger for the mixed air is controlled by controlling the opening degree of the first on / off valve.

[0064] Optionally, see Figure 7 Based on a preset temperature, the opening degree of the first on / off valve is controlled, including:

[0065] S71, the air conditioner gradually increases the opening degree of the first on / off valve.

[0066] S72, until the coil temperature of the main heat exchanger matches the preset temperature, the air conditioner stops increasing the opening of the first on / off valve.

[0067] A first temperature sensor is installed on the coil of the main heat exchanger to detect its temperature. After the first on-off valve opens, its opening is gradually adjusted based on the compressor return gas temperature. The first temperature sensor continuously monitors the main heat exchanger temperature and sends feedback to the air conditioner. The opening of the first on-off valve is then fine-tuned until the coil temperature matches the preset temperature. At this point, the air conditioner stops increasing the valve's opening, and the valve stabilizes at its current position, allowing the air conditioner to deliver the air at the user-set cooling temperature. Matching the coil temperature with the preset temperature can mean the coil temperature is equal to the preset temperature, or there can be a certain margin of error between them. The specific error range can be determined based on actual needs, and this embodiment does not impose any limitations.

[0068] In this embodiment of the disclosure, by using real-time feedback of the main heat exchanger temperature, the opening of the first on / off valve is gradually increased until the coil temperature of the main heat exchanger matches the preset temperature. This can reduce the error between the coil temperature of the main heat exchanger and the preset temperature, thereby more accurately controlling the cooling temperature of the mixed air by the main heat exchanger.

[0069] Optionally, see Figure 8 Based on a preset temperature, the opening degree of the first on / off valve is controlled, including:

[0070] S81, the air conditioner determines the dew point temperature at the location of the temperature and humidity sensor based on the temperature and humidity detected by the temperature and humidity sensor.

[0071] S82, the air conditioner gradually increases the opening of the first on / off valve to control the coil temperature of the main heat exchanger below the dew point temperature.

[0072] S83, until the coil temperature of the main heat exchanger matches the preset temperature, the air conditioner stops increasing the opening of the first on / off valve.

[0073] A temperature and humidity sensor is installed in the channel before the auxiliary heat exchanger. It can detect the temperature and humidity of the hot and humid fresh air passing through this channel. The dew point temperature at the location of the temperature and humidity sensor is determined based on the humidity detected by the sensor, which means the dew point temperature of the hot and dry fresh air before it enters the indoor unit.

[0074] Since high humidity is not required indoors during summer, it's necessary to trap moisture from the outdoor air when introducing it. Therefore, the temperature of the main heat exchanger should be below the dew point but above 0°C. The temperature of the main heat exchanger coil is detected by a first temperature sensor installed on the coil. The opening of the first on-off valve is controlled to keep the main heat exchanger temperature below the dew point. This process continues until the coil temperature matches the preset temperature, at which point the opening of the first on-off valve stops increasing and remains stable. It should be noted that since the dry-heated fresh air is heated by the heating module of the waterless humidification module, its absolute humidity is low. Therefore, it's not necessary to trap moisture from the dry-heated fresh air, and the dew point temperature is not a concern. While it's not essential to specifically monitor whether the main heat exchanger temperature is below the dew point, the above logic can still be used to verify this, ensuring the main heat exchanger temperature remains within acceptable limits. The coil temperature of the main heat exchanger is allowed to have a certain error from the preset temperature. Therefore, while controlling the coil temperature of the main heat exchanger to be below the dew point temperature, we should try to keep the coil temperature of the main heat exchanger as close as possible to the preset temperature.

[0075] In this embodiment of the disclosure, the opening degree of the first on / off valve is gradually increased by real-time feedback of the main heat exchanger temperature, and the coil temperature of the main heat exchanger is controlled to be below the dew point temperature. The coil temperature of the main heat exchanger is controlled as close as possible to the preset temperature, so as to further ensure that the temperature and humidity of the fresh air delivered to the room are suitable.

[0076] Optionally, see Figure 9 Based on the temperature and humidity detected by the temperature and humidity sensor, the dew point temperature at the location of the temperature and humidity sensor is determined, including:

[0077] S91, the air conditioner uses the saturated water vapor corresponding to the temperature detected by the temperature and humidity sensor as the reference saturated water vapor at that temperature, according to a preset correspondence.

[0078] S92, the air conditioner uses the product of the reference saturated water vapor and the humidity detected by the temperature and humidity sensor as the actual saturated water vapor.

[0079] S93, the air conditioner uses the temperature corresponding to the actual saturated water vapor as the dew point temperature at the location of the temperature and humidity sensor according to the preset correspondence.

[0080] A temperature and humidity sensor is installed in the channel before the auxiliary heat exchanger to detect the temperature and humidity of the dry and hot fresh air passing through. According to a preset correspondence, the saturated water vapor corresponding to the temperature detected by the temperature and humidity sensor is used as the reference saturated water vapor at that temperature. The product of the reference saturated water vapor and the humidity detected by the temperature and humidity sensor is used as the actual saturated water vapor. According to a preset correspondence, the temperature corresponding to the actual saturated water vapor is used as the dew point temperature at the location of the temperature and humidity sensor.

[0081] The preset correspondence is the relationship between temperature and saturated water vapor, which is well known to those skilled in the art and will not be elaborated here.

[0082] In this embodiment of the disclosure, based on a preset correspondence, the dew point temperature of the dry and hot fresh air passing through the location can be determined according to the temperature and humidity detected by the temperature and humidity sensor, providing an effective reference for subsequent control of the temperature of the main heat exchanger.

[0083] Combination Figure 10 As shown, this disclosure provides a method for humidification control in an air conditioner, comprising:

[0084] S05, the air conditioner obtains the current indoor air quality, determines that the current indoor air needs to be updated, and controls the waterless humidification module to collect outdoor air.

[0085] S01, the heating module of the waterless humidification module of the air conditioner heats the collected outdoor air to obtain dry and hot fresh air.

[0086] S02, the air conditioner adjusts the rotation speed of the waterless humidification module's rotor module according to the moisture content of the dry and hot fresh air, so that the moisture content of the dry and hot fresh air delivered by the waterless humidification module matches the moisture content of the indoor air.

[0087] S03, the air conditioner delivers dry and hot fresh air that matches the humidity of the indoor air to the indoor unit, starts the main heat exchanger to cool the mixed air formed by the dry and hot fresh air and the indoor air, and shuts down the auxiliary heat exchanger.

[0088] S04, the air conditioner delivers the cooled mixed air into the room.

[0089] When air conditioners are in cooling mode during the summer, doors and windows are usually closed to ensure cooling efficiency. However, after a long period, indoor air becomes stagnant. The system monitors the current indoor air quality. If the carbon dioxide level exceeds a preset value, the air needs to be refreshed. The air conditioner then activates the waterless humidification module and collects outdoor air. Preferably, the preset value is 1000 PPM. The waterless humidification module includes a heating module. After collecting outdoor air, the heating module uses a heating wire to heat the outdoor air, controlling the humidity at 25%-20% and the temperature at 30℃-35℃, thus obtaining dry, hot fresh air and achieving initial dehumidification. The waterless humidification module also includes a rotating wheel module. Adjusting the rotation speed of the rotating wheel module regulates the moisture content of the dry, hot fresh air; the faster the rotating wheel, the higher the moisture content of the dry, hot fresh air. The rotation speed of the waterless humidification module's rotor is adjusted according to the moisture content of the hot, dry fresh air, ensuring that the moisture content of the hot, dry fresh air delivered by the waterless humidification module matches the moisture content of the indoor air, thus further controlling the humidity of the hot, dry fresh air. Inside the indoor unit, the hot, dry fresh air mixes with indoor air from the room, forming a mixed airflow. The air conditioner starts the main heat exchanger and shuts down the auxiliary heat exchanger, allowing the main heat exchanger to cool the mixed airflow. The fan module then delivers the cooled mixed airflow into the room. Matching the moisture content of the hot, dry fresh air with the indoor air moisture content can mean that the moisture content of the hot, dry fresh air is equal to the indoor air moisture content, or there can be a certain margin of error between the two. The specific margin of error can be determined according to actual needs, and this embodiment does not impose any limitations on this.

[0090] In this embodiment, since the outdoor air has a high humidity content in summer, the outdoor air is initially dehumidified by heating the heating module of the waterless humidification module. Then, the rotation speed of the rotary module of the waterless humidification module is adjusted to further control the humidity of the hot, dry air, ensuring that the humidity content of the hot, dry air matches that of the indoor air. This prevents significant fluctuations in indoor humidity caused by the delivery of the hot, dry air. After humidity control of the hot, dry air, the mixture of the hot, dry air and indoor air is cooled by the main heat exchanger to prevent significant fluctuations in indoor air temperature caused by the air blown out by the air conditioner. This humidity and temperature control of the outdoor air ensures that it reaches suitable temperature and humidity before being delivered indoors, thereby guaranteeing a comfortable indoor environment.

[0091] Optionally, indoor air dehumidification and temperature regulation are achieved through the main heat exchanger. However, after dehumidification, the indoor air becomes dry and cold. When the indoor air humidity is below the first humidity threshold, air can be directly supplied to the room through the fan duct (just the fan of the waterless humidification module). The indoor air humidity is monitored in real time. When the humidity is greater than or equal to the first humidity threshold and less than or equal to the second humidity threshold, the supply of air to the room through the fan duct is stopped. Preferably, the first humidity threshold is 6.5 g / kg, and the second humidity threshold is 11.2 g / kg.

[0092] Combination Figure 11 As shown, this disclosure provides an apparatus for controlling the fresh air intake of an air conditioner, including a processor 100 and a memory 101. Optionally, the apparatus may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions stored in the memory 101 to execute the method for controlling the fresh air intake of an air conditioner as described in the above embodiment.

[0093] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0094] The memory 101, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, thereby implementing the method for fresh air control of the air conditioner in the above embodiments.

[0095] The memory 101 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 101 may include high-speed random access memory and may also include non-volatile memory.

[0096] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling fresh air in an air conditioner.

[0097] The aforementioned storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0098] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0099] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0100] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0101] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0102] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling fresh air in an air conditioner, characterized in that, The outdoor unit of the air conditioner is equipped with a waterless humidification module, and the indoor unit includes a main heat exchanger and an auxiliary heat exchanger connected in parallel. The main heat exchanger is connected to the outdoor heat exchanger through a first circulation pipeline, and a first on-off valve is provided on the first circulation pipeline, located between the main heat exchanger and the outdoor heat exchanger. The auxiliary heat exchanger is connected to the outdoor heat exchanger through a second circulation pipeline, and a second on-off valve and a check valve are provided on the second circulation pipeline, located between the auxiliary heat exchanger and the outdoor heat exchanger, and the check valve is located between the auxiliary heat exchanger and the compressor. A branch pipeline is connected to the first circulation pipeline, with one end of the branch pipeline connected to the first circulation pipeline between the main heat exchanger and the first on-off valve, and the other end of the branch pipeline connected to the second circulation pipeline between the auxiliary heat exchanger and the check valve. A third on-off valve is provided on the branch pipeline. The method includes: The heating module of the waterless humidification module heats the collected outdoor air to obtain dry and hot fresh air; The rotation speed of the rotary module of the waterless humidification module is adjusted according to the moisture content of the dry and hot fresh air, so that the moisture content of the dry and hot fresh air delivered by the waterless humidification module matches the moisture content of the indoor air. Dry, hot fresh air that matches the humidity of the indoor air is delivered to the indoor unit. The main heat exchanger is activated to cool the mixture of the dry, hot fresh air and the indoor air, and the auxiliary heat exchanger is turned off. The cooled mixed air is then delivered indoors; The process of activating the main heat exchanger to cool the mixed air and shutting down the auxiliary heat exchanger includes: controlling the second on / off valve and the third on / off valve to close, so that the auxiliary heat exchanger is in a closed state; and controlling the first on / off valve to open, so that the main heat exchanger is activated and cools the mixed air.

2. The method according to claim 1, characterized in that, Adjusting the rotation speed of the impeller module of the waterless humidification module according to the moisture content of the dry hot fresh air includes: The moisture content of the dry, hot fresh air in the channel before the auxiliary heat exchanger is detected. If the moisture content of the hot dry air does not match the moisture content of the indoor air, the rotation speed of the rotor module will be gradually increased or decreased according to the current moisture content of the hot dry air. The rotation speed of the rotary module will stop once the humidity of the current hot and dry fresh air matches the humidity of the indoor air.

3. The method according to claim 1, characterized in that, The control of opening the first on / off valve includes: The coil temperature of the main heat exchanger is determined as a preset temperature based on the user-set cooling temperature; wherein, the preset temperature is lower than the user-set cooling temperature. Start the compressor and control the compressor frequency to rise to a preset frequency; The opening degree of the first on / off valve is controlled according to the preset temperature.

4. The method according to claim 3, characterized in that, The step of controlling the opening degree of the first on / off valve according to the preset temperature includes: Gradually increase the opening degree of the first on / off valve; The opening of the first on / off valve will stop increasing until the coil temperature of the main heat exchanger matches the preset temperature.

5. The method according to claim 4, characterized in that, A temperature and humidity sensor is installed in the channel before the auxiliary heat exchanger; controlling the opening degree of the first on / off valve according to the preset temperature further includes: Based on the temperature and humidity detected by the temperature and humidity sensor, determine the dew point temperature at the location of the temperature and humidity sensor; Gradually increase the opening of the first on / off valve to control the coil temperature of the main heat exchanger below the dew point temperature.

6. The method according to claim 5, characterized in that, The step of determining the dew point temperature at the location of the temperature and humidity sensor based on the temperature and humidity detected by the temperature and humidity sensor includes: According to the preset correspondence, the saturated water vapor corresponding to the temperature detected by the temperature and humidity sensor is used as the reference saturated water vapor at that temperature; The product of the reference saturated water vapor and the humidity detected by the temperature and humidity sensor is taken as the actual saturated water vapor. According to the preset correspondence, the temperature corresponding to the actual saturated water vapor is taken as the dew point temperature at the location of the temperature and humidity sensor.

7. A device for controlling fresh air in an air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to, when running the program instructions, execute the method for fresh air control of an air conditioner as described in any one of claims 1 to 6.

8. An air conditioner, wherein the outdoor unit is equipped with a waterless humidification module, characterized in that, The indoor unit includes a main heat exchanger, an auxiliary heat exchanger, and a device for fresh air control of an air conditioner as described in claim 7, all connected in parallel. The main heat exchanger is connected to the outdoor heat exchanger via a first circulation pipeline. A first on-off valve is installed on the first circulation pipeline, and the first on-off valve is located between the main heat exchanger and the outdoor heat exchanger. The auxiliary heat exchanger is connected to the outdoor heat exchanger via a second circulation pipeline. A second on-off valve and a check valve are installed on the second circulation pipeline. The second on-off valve is located between the auxiliary heat exchanger and the outdoor heat exchanger, and the check valve is located between the auxiliary heat exchanger and the compressor. A branch pipeline is connected to the first circulation pipeline. One end of the branch pipeline is connected to the first circulation pipeline at a point between the main heat exchanger and the first on-off valve. The other end of the branch pipeline is connected to the second circulation pipeline at a point between the auxiliary heat exchanger and the check valve. A third on-off valve is installed on the branch pipeline.

9. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the method for controlling fresh air in an air conditioner as described in any one of claims 1 to 6.

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