A fresh air conditioner control method

Abstract

The application discloses a fresh air conditioner control method, and belongs to the technical field of air conditioning equipment, to solve the technical problem that the current fresh air of a fresh air conditioner has too great an impact on the ambient temperature. The fresh air conditioner room comprises an air conditioner body, a fresh air module and a switching assembly, the air conditioner body is provided with an air conditioner air duct, an air inlet and an air outlet, the air inlet and the air outlet are both in communication with the air conditioner air duct, the fresh air module has a first fresh air inlet in communication with the air conditioner air duct and a second fresh air inlet capable of directly discharging air, and the switching assembly is arranged on the fresh air module and can be controlled to open or close the second fresh air inlet. After judging the carbon dioxide concentration and temperature of the indoor environment and the outdoor environment, the switching assembly can be controlled to open or close the second fresh air inlet, so that fresh air can be quickly input into the room or the fresh air is heated or cooled before being input into the room, thereby reducing the impact of the fresh air on the indoor ambient temperature.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioning equipment, and in particular relates to a fresh air conditioning control method. Background Technology

[0002] An air conditioner, or air conditioner, is a device that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow velocity of the air inside a building or structure. A fresh air conditioner has air outlets; in both cooling and heating modes, the outlets can generate hot and cold air streams respectively. A fresh air conditioner is a device that integrates a fresh air unit and an air conditioner, possessing not only the air conditioning function of an air conditioner but also the ventilation function of a fresh air unit.

[0003] In related technologies, when air conditioners with fresh air functions introduce fresh air into the indoor environment, the fresh air will affect the indoor temperature, causing fluctuations in the indoor temperature and resulting in a poor user experience. Summary of the Invention

[0004] This application aims to at least partially solve the technical problem that the fresh air from current air conditioning systems has an excessive impact on ambient temperature. To this end, this application provides a method for controlling fresh air conditioning systems.

[0005] This application provides a method for controlling a fresh air conditioning system, wherein the fresh air conditioning system includes: The air conditioner body has an air conditioning duct, an air inlet and an air outlet, and the air inlet and the air outlet are both connected to the air conditioning duct; The fresh air module has a first fresh air inlet connected to the air conditioning duct, and a second fresh air inlet for direct airflow; and A switching component is provided in the fresh air module, which can controllably open or close the second fresh air inlet; The fresh air conditioning control method includes: The system obtains indoor carbon dioxide concentration, outdoor carbon dioxide concentration, indoor temperature, and outdoor temperature. Compare the indoor carbon dioxide concentration with a first preset carbon dioxide concentration, and compare the indoor carbon dioxide concentration with the outdoor carbon dioxide concentration; When the indoor carbon dioxide concentration is greater than the first preset carbon dioxide concentration and the outdoor carbon dioxide concentration, the fresh air module is turned on. The difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration, as well as the difference between the indoor temperature and the outdoor temperature, are obtained. When the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is greater than a second preset carbon dioxide concentration, and the difference between the indoor temperature and the outdoor temperature is less than a first preset temperature, the switching component controls the second fresh air inlet to open. When the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is greater than a second preset carbon dioxide concentration, and the difference between the indoor temperature and the outdoor temperature is greater than a first preset temperature, the switching component controls the second fresh air inlet to close. If the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is less than the second preset carbon dioxide concentration, the switching component controls the second fresh air inlet to close.

[0006] In some implementations, when the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is less than the second preset carbon dioxide concentration (entering smart mode), and the difference between the indoor temperature and the outdoor temperature is less than the second preset temperature, the frequency of the compressor of the fresh air conditioner is adjusted to low frequency. When the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is less than the second preset carbon dioxide concentration, and the difference between the indoor temperature and the outdoor temperature is greater than the second preset temperature (4), the frequency of the compressor of the fresh air conditioner is adjusted to medium frequency, the second preset temperature is greater than the first preset temperature, and the medium frequency is higher than the low frequency.

[0007] In some embodiments, the air conditioner body includes a housing, a fan, and an evaporator. The air conditioning duct is disposed in the housing. In the direction from the air inlet to the air outlet, the fan and the evaporator are arranged sequentially. The first fresh air inlet includes a first opening and a second opening controlled by the switching component. The first opening can communicate with the air inlet side of the fan, and the second opening can communicate with the windward side of the evaporator and is located between the fan and the evaporator. The fresh air conditioning control method further includes: when the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the switching component controls the first opening to close and controls the second opening to open. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, the switching component controls the first opening to open and the second opening to close. If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, the switching component controls the first opening to open and the second opening to close.

[0008] In some implementations, the fan is turned off when the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature. If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, the fan speed is adjusted to the first fan speed. If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, the fan speed is adjusted to a second speed, which is higher than the first speed.

[0009] In some embodiments, the air conditioner body includes a housing, a fan, and an evaporator. The air conditioning duct is disposed in the housing. In the direction from the air inlet to the air outlet, the fan and the evaporator are arranged sequentially. The first fresh air inlet includes a first opening and a second opening controlled by the switching component. The first opening can communicate with the air inlet side of the fan, and the second opening can communicate with the windward side of the evaporator and is located between the fan and the evaporator. The fresh air conditioning control method also includes: When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the third preset carbon dioxide concentration, the switching component controls the first opening to close and controls the second opening to open. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the switching component controls the first opening to open and the second opening to close.

[0010] In some implementations, if the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is greater than the third preset carbon dioxide concentration and less than the fourth preset carbon dioxide concentration, the fan speed is adjusted to the first fan speed. If the difference between the indoor and outdoor carbon dioxide concentrations is greater than the fourth preset carbon dioxide concentration, the fan will be turned off.

[0011] In some embodiments, if the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to a second speed, which is higher than the first speed.

[0012] In some implementations, when the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the third preset carbon dioxide concentration, the fan is turned off, and the switching component controls the first opening to close and the second opening to open. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to low, the switching component controls the first opening to close, and controls the second opening to open.

[0013] In some implementations, if the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the switching component closes the first opening, opens the second opening, and shuts down the fan.

[0014] In some embodiments, the air conditioner body includes a housing, a fan, and an evaporator. The air conditioning duct is disposed in the housing. In the direction from the air inlet to the air outlet, the fan and the evaporator are arranged sequentially. The first fresh air inlet includes a first opening and a second opening controlled by the switching component. The first opening can communicate with the air inlet side of the fan, and the second opening can communicate with the windward side of the evaporator and is located between the fan and the evaporator. When the indoor ambient temperature and the outdoor ambient temperature are different, the switching component opens the first opening and closes the second opening.

[0015] In some embodiments, when the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than a second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than a fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed, and the compressor frequency of the fresh air conditioner is adjusted to high frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to high frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to low frequency. The airflow intensity of the low wind, medium wind, and high wind increases sequentially, as does the airflow intensity of the low frequency, medium frequency, and high frequency.

[0016] In some embodiments, when the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature and greater than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed and the compressor frequency of the fresh air conditioner is adjusted to high frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature and greater than the first preset temperature, and when the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the fourth preset carbon dioxide concentration and greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed and the compressor frequency of the fresh air conditioner is adjusted to medium frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature and greater than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to low frequency.

[0017] In some embodiments, when the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed, and the frequency of the compressor of the fresh air conditioner is adjusted to medium frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to medium frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to low frequency.

[0018] In some implementations, when the indoor ambient temperature is higher than the outdoor ambient temperature and the air conditioner is in cooling mode, the switching component controls the first fresh air vent to close and controls the second fresh air vent to open.

[0019] In some implementations, the compressor of the fresh air conditioner is turned off when the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than a second preset temperature. If the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature but greater than the first preset temperature, the frequency of the compressor of the fresh air conditioner will be reduced. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the frequency of the compressor of the fresh air conditioner is maintained.

[0020] In the fresh air conditioning control method proposed in this application, by acquiring the indoor and outdoor carbon dioxide concentrations, it is possible to determine whether the indoor carbon dioxide concentration is too high and whether the indoor carbon dioxide concentration can be reduced by introducing fresh air from the outdoor environment into the indoor environment. By controlling the opening and closing of the second fresh air inlet of the fresh air module through a switching component, when the difference between the indoor and outdoor carbon dioxide concentrations is large and the temperature difference between the indoor and outdoor environments is small, the fresh air output by the fresh air module can be directly introduced into the room through the second fresh air inlet. When the difference between the indoor and outdoor carbon dioxide concentrations is large and the temperature difference between the indoor and outdoor environments is large, the fresh air output by the fresh air module can be heat-exchanged by the air conditioning unit before being introduced into the indoor environment. When the difference between the indoor and outdoor carbon dioxide concentrations is small, the fresh air output by the fresh air module can be heat-exchanged by the air conditioning unit before being introduced into the indoor environment. This effectively improves the problem of excessively high indoor carbon dioxide concentration while reducing the impact of fresh air on the indoor temperature. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This paper shows a schematic diagram of the internal structure of the fresh air conditioner in the fresh air conditioner control method disclosed in the embodiments of this application; Figure 2 This paper shows a schematic diagram of the overall structure of the fresh air conditioner in the fresh air conditioner control method disclosed in the embodiments of this application; Figure 3 This paper shows a schematic diagram of the fresh air duct structure in the fresh air conditioning control method disclosed in an embodiment of this application; Figure 4 This paper shows a schematic diagram of the bottom structure of the fresh air duct of the fresh air conditioner in the fresh air conditioner control method disclosed in the embodiments of this application; Figure 5 The diagram shows a side view of the fresh air duct of the fresh air conditioner in the fresh air conditioner control method disclosed in the embodiments of this application; Figure 6 This diagram shows an exploded view of the fresh air module in the fresh air conditioning control method disclosed in this application embodiment; Figure 7A flowchart of Embodiment 3 of the fresh air conditioning control method of this application is shown; Figure 8 A flowchart of Embodiment 4 of the fresh air conditioning control method of this application is shown; Figure 9 The flowcharts of Embodiments 5 and 6 of the fresh air conditioning control method according to the present application are shown.

[0023] Figure label: 100 - Housing, 110 - Air conditioning duct, 120 - Air inlet, 130 - Air outlet, 140 - Fresh air duct, 141 - First channel, 141a - First opening, 141b - Third opening, 142 - Second channel, 142a - Second opening, 142b - Fourth opening, 143 - Third channel, 144 - Second fresh air inlet. 200 - Air conditioning module, 210 - Fan, 220 - Evaporator 300 - Fresh air module, 310 - Fresh air housing, 311 - Fresh air inlet, 312 - Fresh air outlet, 320 - Fan wheel, 330 - First motor, 340 - Second motor, 350 - Valve, 360 - Filter screen 400 - Switching component, 410 - Drive unit, 420 - Baffle. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications in the embodiments of this invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances. In addition, the descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0026] This application is described below with reference to the accompanying drawings and specific embodiments: Example 1 Please refer to Figures 1-5 This application discloses a fresh air conditioning control method, including an air conditioning body, a fresh air module 300 and a switching component 400. The air conditioning body specifically includes a housing 100 and an air conditioning module 200.

[0027] The housing 100 is the basic component of the fresh air conditioner of this application. The housing 100 provides an installation base for at least some other components of the fresh air conditioner and serves to protect those components. Specifically, the housing 100 has an inner cavity for installing the other components of the fresh air conditioner. The housing 100 can be made of a metal material, giving it a certain mechanical strength and good corrosion resistance. Specifically, the housing 100 can be made of stainless steel. Alternatively, the housing 100 can also be a combination of metal and plastic materials.

[0028] The housing 100 is also provided with an air conditioning duct 110, an air inlet 120 and an air outlet 130. The air inlet 120 and the air outlet 130 of the housing 100 are both connected to the air conditioning duct 110 of the housing 100. The air conditioning module 200 is disposed inside the housing 100. The air conditioning module 200 may specifically include a fan 210 and an evaporator 220. The fan 210 allows air from outside the housing 100 to enter the air conditioning duct 110 of the housing 100 through the air inlet 120 and be discharged through the air outlet 130 of the housing 100. The evaporator 220 is disposed in the air conditioning duct 110 of the housing 100. The air entering the air conditioning duct 110 of the housing 100 can contact the evaporator 220 for heat exchange, so as to achieve cooling or heating of the air before being discharged through the air outlet 130 of the housing 100, thereby corresponding to the cooling and heating modes of the air conditioner.

[0029] It should be understood that an air conditioner also includes an outdoor unit, which in turn includes components such as a condenser and a compressor. Both the compressor and condenser can be located inside the outdoor unit. The compressor is the core component of the air conditioner; it compresses the refrigerant to form a high-temperature, high-pressure gaseous refrigerant. The condenser is the cooling device of the air conditioner and is connected to the compressor. After the compressor compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant, this refrigerant enters the condenser, where it dissipates heat to form a room-temperature, high-pressure refrigerant. This room-temperature, high-pressure refrigerant then flows through pipes into the evaporator 220 of the fresh air conditioning unit. Within the evaporator, the room-temperature, high-pressure refrigerant releases pressure to form a normal-pressure gas, thereby lowering its temperature. In this way, the low-temperature refrigerant can absorb heat from the room, achieving the purpose of lowering the indoor ambient temperature. The heating mode of an air conditioner operates on a similar principle to the cooling mode described above and will not be elaborated further.

[0030] The housing 100 also has a fresh air duct 140. One end of the fresh air duct 140 is connected to the fresh air module 300, and the other end of the fresh air duct 140 has a second fresh air inlet 144. The second fresh air inlet 144 is connected to the air outlet 130 of the housing 100. The fresh air module 300 can input fresh air into the fresh air duct 140, and the fresh air is output to the indoor environment through the second fresh air inlet 144 and the air outlet 130 of the housing 100 to replenish the indoor environment with fresh air. The fresh air duct 140 of the housing 100 can also be connected to the air conditioning duct 110 of the housing 100 through the first fresh air inlet. Therefore, when the fresh air module 300 inputs fresh air into the fresh air duct 140, the fresh air can also enter the air conditioning duct 110 so that the fresh air can contact the evaporator 220 of the air conditioning module 200 for heat exchange. This allows the fresh air to be heated or cooled and then discharged from the air outlet 130 of the housing 100. This results in high air quality of the air output by the air conditioning system using the fresh air conditioning system of this application after cooling or heating.

[0031] Specifically, when the outdoor ambient temperature is high and the air conditioner is in cooling mode, the indoor temperature is relatively low. When the fresh air module 300 introduces warm outdoor air through the interior and then into the room through the fresh air duct 140, the high temperature of this fresh air will affect the indoor temperature and thus the cooling efficiency of the air conditioner. Therefore, after the fresh air enters the air conditioning duct 110 through the fresh air duct 140 of the housing 100, it can be cooled by the evaporator 220. This allows the fresh air conditioner of this application to output cooled fresh air, thereby improving indoor air quality while changing the indoor ambient temperature. Furthermore, when fresh air is introduced into the indoor environment, the indoor ambient temperature can reach the preset temperature more efficiently, or when the indoor ambient temperature has already reached the preset temperature, the fluctuation of the indoor ambient temperature can be reduced.

[0032] The switching component 400 of this application can be disposed within the fresh air duct 140 of the housing 100. The switching component 400 is configured to controllably open or close the second fresh air inlet 144 of the fresh air duct 140 of the housing 100. When the switching component 400 closes the second fresh air inlet 144 of the fresh air duct 140 of the housing 100, fresh air cannot be discharged through the second fresh air inlet 144 of the fresh air duct 140 of the housing 100. Therefore, all the fresh air input into the fresh air duct 140 of the housing 100 can be drawn into the air conditioning duct 110 by the fan 210 of the air conditioning module 200, so that the fresh air can exchange heat with the evaporator 220, and output the heated or cooled fresh air through the air outlet 130 of the housing 100.

[0033] When the switching component 400 opens the second fresh air inlet 144 of the fresh air duct 140 of the housing 100, fresh air can be output through the second fresh air inlet 144. Since the second fresh air inlet 144 of the fresh air duct 140 is connected to the air outlet 130 of the housing 100, the fresh air output from the second fresh air inlet 144 of the fresh air duct 140 can be directly output to the indoor environment through the air outlet 130 of the housing 100, thereby allowing fresh air to be introduced into the indoor environment more efficiently. Specifically, when the indoor temperature is suitable and the temperature difference between indoors and outdoors is small, the fresh air air conditioner of this application can only use the fresh air function for indoor ventilation. Therefore, the air conditioning module of this application can be set to be in the off state. At this time, the fresh air input into the fresh air duct 140 by the fresh air module 300 can be discharged through the second fresh air inlet 144 of the fresh air duct 140, and then output to the room through the air outlet 130 of the housing 100.

[0034] In the fresh air conditioning control method proposed in this application embodiment, the air conditioning module 200 is disposed inside the housing 100. The air conditioning module 200 can draw in air from outside the housing 100 and input it into the indoor environment after heat exchange. The fresh air module 300 is connected to the fresh air duct 140 inside the housing 100. When the switching component 400 closes the second fresh air inlet 144 of the fresh air duct 140, the fresh air entering the fresh air duct 140 can enter the air conditioning duct 110 and exchange heat with the air conditioning module 200. Thus, the fresh air that has been heated or cooled is input into the room through the air outlet 130 of the housing 100, so as to reduce the impact of fresh air on the indoor ambient temperature when the air conditioning module 200 is started. When the switching component 400 opens the second fresh air inlet 144 of the fresh air duct 140, the fresh air input into the fresh air duct 140 by the fresh air module 300 can be directly input into the room through the second fresh air inlet 144 and the air outlet 130 of the housing 100. This allows the fresh air to be input into the indoor environment more efficiently, thereby increasing the ventilation efficiency of the indoor environment.

[0035] In some embodiments, to improve the efficiency of the fresh air conditioning system in supplying fresh air to the indoor environment, and thus improve the fresh air efficiency of the air conditioning system, the switching component 400 is configured to connect the fresh air duct 140 of the housing 100 to the air conditioning duct 110 through the first fresh air inlet, or to connect the fresh air duct 140 to the second fresh air inlet 144. Specifically, when both the air conditioning module 200 and the fresh air module 300 are in the start-up state, when the switching component 400 connects the fresh air duct 140 of the housing 100 to the air conditioning duct 110, the second fresh air inlet 144 of the fresh air duct 140 is closed. At this time, the fresh air in the fresh air duct 140 can only enter the air conditioning duct 110 so that the fresh air can exchange heat with the evaporator 220 of the air conditioning module 200. When the air conditioning module 200 of this application is in the off state, i.e., when there is no need to adjust the indoor ambient temperature, the switching component 400 can disconnect the fresh air duct 140 of the housing 100 from the air conditioning duct 110. This prevents fresh air in the fresh air duct 140 from entering the air conditioning duct 110, and thus the fresh air in the fresh air duct 140 can only be output through the second fresh air inlet 144 of the fresh air duct 140 and then output to the indoor environment through the air outlet 130 of the housing 100. By disconnecting the fresh air duct 140 of the housing 100 from the air conditioning duct 110, some fresh air can be prevented from flowing into the air conditioning duct 110, thereby allowing the fresh air in the fresh air duct 140 to be input into the indoor environment more efficiently, thereby improving the ventilation efficiency of the fresh air conditioning system of this application.

[0036] Of course, in other embodiments, in order to simplify the structure of the fresh air conditioner of this application, if the fresh air conditioner of this application only needs to output fresh air to the room, the switching component 400 can be configured to connect the fresh air duct 140 of the housing 100 with the air conditioning duct 110 and the second fresh air inlet 144. In this way, the fresh air in the fresh air duct 140 can be output through the second fresh air inlet 144 and then through the air outlet 130 of the housing 100 to the indoor environment. When the fresh air in the fresh air duct 140 is input into the air conditioning duct 110, it can still be output through the air outlet 130 of the housing 100 to the indoor environment. In this way, the function of the switching component 400 is relatively simple, and it only needs to realize the function of opening and closing the second fresh air inlet 144. This makes the structure of the switching component 400 relatively simple, thereby simplifying the structure of the fresh air conditioner of this application and reducing the manufacturing cost.

[0037] In some embodiments, to make the temperature control of fresh air in the air conditioning control method of this application more precise, the fan 210 and the evaporator 220 are arranged sequentially in the direction from the air inlet 120 to the air outlet 130. The first fresh air inlet includes a first opening 141a and a second opening 142a controlled by the switching component 400. The first opening 141a can communicate with the air inlet side of the fan 210, and the second opening 142a can communicate with the windward side of the evaporator 220 and is located between the fan 210 and the evaporator 220. When the fresh air enters the air conditioning duct 110 through the first opening 141a, it can fully exchange heat with the evaporator 220, so that the effect of the fresh air on the temperature control of the indoor environment is stronger after it is introduced into the room. When fresh air enters the air conditioning duct 110 through the second opening 142a, it can quickly come into contact with the evaporator 220 for heat exchange, allowing the fresh air to quickly enter the indoor environment and perform a certain amount of heating or cooling on the fresh air, so as to improve the efficiency of carbon dioxide concentration in the indoor environment.

[0038] Specifically, the second opening 142a can be connected to the windward side of the evaporator 220, so that the fresh air output through the second opening 142a can directly contact the evaporator 220 for heat exchange.

[0039] In some embodiments, the fresh air duct 140 of this application is configured to include a first channel 141 and a second channel 142. One end of the first channel 141 is connected to the air outlet of the fresh air module 300, and the other end of the first channel 141 is connected to both the second channel 142 and the fresh air duct 140. A second fresh air inlet 144 of the fresh air duct 140 is located at the end of the second channel 142 facing away from the first channel 141. Therefore, the fresh air output by the fresh air module 300 can first enter the first channel 141. A switching component 400 can be disposed in the first channel 141, and the switching component 400 can connect the first channel 141 to the air conditioning duct 110, or connect the first channel 141 to the second channel 142. When the first channel 141 is connected to the air conditioning duct 110 and disconnected from the second channel 142, the fresh air in the first channel 141 can enter the air conditioning duct 110 and exchange heat with the evaporator 220 of the air conditioning module 200. When the first channel 141 is disconnected from the air conditioning duct 110 and the first channel 141 is connected to the second channel 142, the fresh air in the first channel 141 can enter the second channel 142 and then be directly output to the indoor environment through the second fresh air inlet 144 of the second channel 142 and the air outlet 130 of the housing 100.

[0040] The fresh air module 300 first introduces fresh air into the first channel 141 of the fresh air duct 140. As the fresh air flows within the first channel 141, the airflow gradually stabilizes, thus stabilizing the fresh air flow into the air conditioning duct 110 and the second channel 142 via the first channel 141. Furthermore, since both the first and second channels 141 are located within the housing 100, and the air conditioning duct 110 is also located within the housing 100, the first channel 141 allows the connection point between it and the air conditioning duct 110 to be positioned near the fan 210 of the air conditioning module 200. This enables the fresh air within the first channel 141 to be more efficiently drawn into the air conditioning duct 110 by the fan 210 of the air conditioning module 200, and also allows for a more flexible arrangement of the various parts within the housing 100 of the fresh air conditioning system of this application.

[0041] In some embodiments, in order for the switching component 400 of this application to achieve the purpose of disconnecting the first channel 141 and the air conditioning duct 110, or disconnecting the first channel 141 and the second channel 142, the switching component 400 may be configured to include a driving part 410 and a baffle 420, wherein the baffle 420 is movably disposed in the first channel 141, the driving part 410 is connected to the baffle 420, and the driving part 410 can drive the baffle 420 to move so that the baffle 420 blocks the air conditioning duct 110, or drive the baffle 420 to move so that the baffle 420 blocks the second channel 142. Specifically, in the case where the switching component 400 is not installed in the fresh air conditioning system of this application, the first channel 141 is in communication with both the air conditioning duct 110 and the second channel 142. When the switching component 400 is installed in the first channel 141, even when the drive baffle 420 of the drive unit 410 blocks the air conditioning duct 110, the first channel 141 and the second channel 142 remain in communication, allowing the fresh air input into the first channel 141 by the fresh air module 300 to enter the second channel 142. Similarly, even when the drive baffle 420 of the drive unit 410 blocks the second channel 142, the first channel 141 and the air conditioning duct 110 remain in communication, allowing the fresh air input into the first channel 141 by the fresh air module 300 to enter the air conditioning duct 110.

[0042] By driving the baffle 420 to move through the drive unit 410, the air conditioning duct 110 or the second channel 142 can be blocked, which makes the structure of the switching component 400 of this application relatively simple and the switching efficiency high.

[0043] In some embodiments, in order to further simplify the structure of the switching component 400 of this application, the drive unit 410 in the switching component 400 can be configured to drive the baffle 420 to rotate so that the baffle 420 blocks the air conditioning duct 110 or the second channel 142. Therefore, the drive unit 410 of this application can be a motor, and the baffle 420 can be connected to the output shaft of the motor to achieve the purpose of controlling the rotation of the baffle 420.

[0044] Specifically, a first opening 141a can be opened on the side wall of the first channel 141, and the air conditioning duct 110 can be configured to communicate with the first opening 141a on the side wall of the first channel 141. A third opening 141b can be opened at the end of the first channel 141, and the second channel 142 can be configured to communicate with the third opening 141b at the end of the first channel 141. The shape and size of the baffle 420 match the first opening 141a and the third opening 141b of the first channel 141, so that the baffle 420 can completely block the first opening 141a or the third opening 141b of the first channel 141. One end of the baffle is rotatably connected to the side wall of the first channel 141 where the first opening 141a is provided. The driving unit 410 can drive the baffle 420 to rotate relative to the side wall of the first channel 141 where the first opening 141a is provided in a first direction, so that the baffle 420 can rotate to block the first opening 141a of the first channel 141. When the driving unit 410 drives the baffle 420 to rotate in a second direction opposite to the first direction, the baffle 420 can block the third opening 141b at the end of the first channel 141.

[0045] When the fresh air conditioner of this application is installed horizontally indoors, the first opening 141a of the first channel 141 can be opened on the side wall at the bottom of the first channel 141. Correspondingly, the baffle 420 is rotatably connected to the side wall at the bottom of the first channel 141. When the driving unit 410 drives the baffle 420 to rotate toward the side wall at the bottom of the first channel 141, the baffle 420 can block the first opening 141a of the first channel 141. When the driving unit 410 drives the baffle 420 to rotate in a direction away from the side wall at the bottom of the first channel 141, the baffle can be opened to block the side wall at the bottom of the first channel 141. The baffle 420 gradually rises within the first channel 141, thereby blocking the third opening 141b at the end of the first channel 141. It should be understood that the third opening 141b can be blocked if the baffle 420 is completely upright within the first channel 141, or if the baffle 420 is tilted within the first channel 141, further blocking the third opening 141b. This depends on the size of the third opening 141b and the size of the baffle 420, and this application does not impose any limitations on this. Meanwhile, the specific location of the first opening 141a in the first channel 141 is not limited in this application, as long as the first opening 141a is located on the side wall of the first channel 141.

[0046] Furthermore, it should be understood that when the first opening 141a and the third opening 141b of the first channel 141 are respectively opened on the side wall and end of the first channel 141, the first opening 141a and the third opening 141b can be distributed on different sides of the first channel 141. Specifically, only the third opening 141b is provided at the end of the first channel 141, which allows the end of the first channel 141 to be directly connected to the second channel 142. This ensures that the inner diameter of the fresh air duct 140 remains consistent in the direction from the first channel 141 to the second channel 142, and that the extension direction of the fresh air duct 140 is consistent. When the applied fresh air air conditioner only uses the fresh air function, the air pressure inside the fresh air duct 140 can remain stable during the flow of fresh air, and the fresh air will not turn during the flow, so that the flow direction of the fresh air remains stable, thereby maintaining a stable airflow rate and ultimately ensuring a stable flow of fresh air output by the fresh air air conditioner.

[0047] In other embodiments, the drive unit 410 in the switching component 400 of this application can also block the air conditioning duct 110 or the second channel 142 by moving the drive baffle 420. Specifically, the first opening 141a and the third opening 141b of the first channel 141 can be provided at the end of the first channel 141 or the side wall of the first channel 141, and the first opening 141a and the third opening 141b of the first channel 141 can be distributed along a preset direction. The drive unit 410 can drive the baffle 420 to move back and forth along the preset direction, so that the baffle 420 can selectively block the first opening 141a or the third opening 141b. In this way, the switching component 400 can also achieve the purpose of controlling the opening and closing of the air conditioning duct 110 and the second channel 142.

[0048] Similarly, the second opening 142a of this application can be provided on the second channel 142. Correspondingly, the second channel 142 also has a fourth opening 142b. The second opening 142a can also be opened and closed by the cooperation of the drive unit 410 and the baffle 420. The opening and closing method of the second opening 142a is the same as the opening and closing method of the first opening 141a. Therefore, the switching component of this application can specifically be provided with two drive units 410 and two baffles 420.

[0049] In some embodiments, to simplify the structure of the fresh air conditioner of this application and to simplify the connection structure between the fresh air duct 140 inside the housing 100 and the air conditioning duct 110, the fresh air duct 140 inside the housing 100 can be disposed inside the air conditioning duct 110. Thus, by opening a first opening 141a in the first channel 141 of the fresh air duct 140, the first channel 141 can naturally connect with the air conditioning duct 110. Specifically, in this application, the air conditioning duct 110 can be configured as a cavity structure inside the housing 100, thereby giving the air conditioning duct 110 a larger space and allowing a larger flow rate of air from outside the housing 100 into the air conditioning duct 110, thus improving the heating and cooling effect of the fresh air conditioner of this application. A fresh air duct can be installed inside the housing 100. The fresh air duct 140 is located inside the fresh air duct. The fresh air duct is placed inside the air conditioning duct 110 of the housing 100, and a first opening 141a is opened on the wall of the fresh air duct. The fresh air introduced into the fresh air duct 140 can be discharged directly into the air conditioning duct 110 after being discharged through the first opening 141a of the first channel 141. This allows the fresh air to contact and exchange heat with the evaporator 220 of the air conditioning module 200 more efficiently.

[0050] In some embodiments, it should be understood that the evaporator 220 of the air conditioning module 200 in this application may be disposed within the air conditioning duct 110 and may be disposed laterally within the air conditioning duct 110 so that all parts of the air passing through the air conditioning duct 110 can fully contact and exchange heat with the evaporator 220. It should also be understood that after the first opening 141a of the first channel 141 introduces fresh air into the air conditioning duct 110, the amount of fresh air in the part of the air conditioning duct 110 adjacent to the first opening 141a of the first channel 141 is relatively larger than that in other areas of the air conditioning duct 110. Therefore, when fresh air is introduced into the air conditioning duct 110 through the first opening 141a of the first channel 141, the first opening 141a of the first channel 141 of this application can be set in the middle position of the air conditioning duct 110. The fresh air output through the first opening 141a of the first channel 141 can first be located in the middle part of the air conditioning duct 110, and then the fresh air can diffuse into all parts of the air conditioning duct 110, so that the fresh air can fully contact the evaporator 220 of the air conditioning module 200, and avoid the fresh air from not being fully heated or cooled.

[0051] In some embodiments, in order to enable the fresh air in the fresh air duct 140 of this application to enter the air conditioning duct 110 more efficiently, the air conditioning module 200 of this application may be configured to include two fans 210. The two fans 210 can draw air outside the housing 100 into the air conditioning duct 110 through the air inlet 120 of the housing 100, and can also draw fresh air in the first channel 141 into the air conditioning duct 110 through the first opening 141a. By setting two fans 210, the airflow entering the air conditioning duct 110 through the air inlet 120 of the housing 100 can be increased, and the fresh air in the first channel 141 can enter the air conditioning duct 110 more efficiently.

[0052] Two fans 210 can be installed on both sides of the first opening 141a of the first channel 141. Therefore, the two fans 210 can draw in the fresh air output through the first opening 141a of the first channel 141, so that the fresh air can be distributed in various parts of the air conditioning duct 110, so that the amount of air in each part of the air conditioning duct 110 is more consistent. This allows the air in the air conditioning duct 110 to fully contact and exchange heat with the evaporator 220, and ultimately makes the temperature consistency of the fresh air output by the air conditioning system of this application better.

[0053] In some embodiments, the air inlet sides of the two fans 210 of the air conditioning module 200 can be configured to face the first channel 141, so that the two fans 210 can more efficiently draw in the fresh air output from the first channel 141. Therefore, the first opening 141a of the first channel 141 can be set at the bottom or top of the first channel 141, so that the distance between the first opening 141a of the first channel 141 and the air inlet sides of the two fans 210 can be kept consistent, thereby further enabling the fresh air output from the first channel 141 to be evenly distributed in the air conditioning duct 110.

[0054] Of course, it should be understood that the number of fans 210 in the air conditioning module 200 can be set to more than two. The more fans 210 there are, the better the effect of the fans 210 in drawing the external air of the housing 100 and the fresh air in the first channel 141 into the air conditioning duct 110.

[0055] In some embodiments, multiple second fresh air inlets 144 can be provided in the fresh air duct 140 of this application, and all multiple second fresh air inlets 144 are connected to the air outlet 130. This allows the fresh air in the fresh air duct 140 to be output to the indoor environment more efficiently. Specifically, multiple branch pipes can be provided at the end of the second channel 142 of the fresh air duct 140, and each branch pipe is provided with a second fresh air inlet 144, so as to achieve the purpose of having multiple second fresh air inlets 144 in the fresh air duct 140.

[0056] Specifically, the fresh air duct 140 of this application may also be provided with multiple third channels 143, one end of the multiple third channels 143 is connected to the second channel 142, and the other end of the multiple third channels 143 is provided with a second fresh air inlet 144.

[0057] Furthermore, the multiple second fresh air inlets 144 of the fresh air duct 140 can be evenly distributed in various parts of the air outlet 130 of the housing 100. Therefore, the fresh air output through the multiple second fresh air inlets 144 of the fresh air duct 140 can be evenly discharged at the air outlet 130 of the housing 100, thereby enabling the fresh air to diffuse more efficiently in the indoor environment after being output to the indoor environment, making the fresh air air conditioner of this application more efficient in exchanging air in the indoor environment.

[0058] In some embodiments, to facilitate the installation of the fresh air module 300 of this application, the fresh air module 300 can be configured to be connected to the housing 100, or the fresh air module 300 can be disposed outside the housing 100. Specifically, the fresh air module 300 can be detachably connected to the outside of the housing 100, so that the fresh air module 300 and the housing 100 can be manufactured separately and then fixed, thereby simplifying the manufacturing process of the fresh air air conditioner of this application.

[0059] Of course, in other embodiments, the fresh air module 300 can also be disposed inside the housing 100, which makes the overall structure of the fresh air air conditioner of this application more compact and more integrated. At the same time, it is not necessary to fix the fresh air module 300 in the indoor environment separately. When the housing 100 is fixedly installed in the indoor environment, the fresh air module 300 is also fixedly installed in the indoor environment accordingly.

[0060] In order to enable the fresh air module 300 of this application to input fresh air into the fresh air duct 140 of the housing 100, the fresh air module 300 may be configured to include a fresh air housing 310, a fan wheel 320 and a first motor 330, wherein the fresh air housing 310 has a fresh air inlet 311 and a fresh air outlet 312. The fresh air inlet 311 of the fresh air housing 310 can be connected to the outdoor environment through a pipeline, and the fresh air outlet 312 of the fresh air housing 310 can be configured to be connected to the fresh air duct 140 of the housing 100. The fresh air housing 310 also has an inner cavity, which is connected to both the fresh air outlet 312 and the fresh air inlet 311. The impeller 320 is located in the inner cavity of the fresh air housing 310. The first motor 330 is connected to the impeller 320 and can drive the impeller 320 to rotate, so that fresh air from the outdoor environment can be drawn into the fresh air housing 310 through the fresh air inlet 311 and output to the fresh air duct 140 of the housing 100 through the fresh air outlet 312.

[0061] In some embodiments, the impeller 320 in the fresh air module 300 of this application can be a centrifugal impeller 320, which can make the wind force generated after the impeller 320 rotates greater, thereby allowing fresh air from the outdoor environment to be more efficiently introduced into the fresh air duct 140 of the housing 100. The fresh air inlet 311 and the fresh air outlet 312 of the fresh air housing 310 can be set on opposite side walls of the fresh air housing 310. Thus, the fresh air outlet 312 of the fresh air housing 310 can be set on the side wall where the fresh air housing 310 connects to the housing 100. Correspondingly, the fresh air inlet 311 of the fresh air housing 310 can be set on the side wall away from the housing 100. In this way, the pipe connected to the fresh air inlet 311 of the fresh air housing 310 can pass through the wall and extend to the outdoor environment without bending or twisting, thereby ensuring that the pipe connected to the fresh air inlet 311 of the fresh air housing 310 is unobstructed.

[0062] In some embodiments, in order to prevent air from the indoor environment from flowing back into the fresh air module 300, the fresh air module 300 of this application may also be provided with a valve plate 350, wherein the valve plate 350 is movably disposed at the fresh air inlet 311 of the fresh air housing 310. By moving the valve plate 350, the valve plate 350 can block the fresh air inlet 311 of the fresh air housing 310, thereby preventing the airflow in the indoor environment from flowing back into the outdoor environment through the fresh air module 300.

[0063] Specifically, the fresh air module 300 of this application may also be equipped with a second motor 340, which can be connected to a valve plate 350 to make the valve plate 350 rotate. When the first motor 330 of the fresh air module 300 is turned off and there is no need to input fresh air into the indoor environment, the second motor 340 can drive the valve plate 350 to rotate to block the fresh air inlet 311 of the fresh air housing 310. When the first motor 330 of the fresh air module 300 is turned on to input fresh air into the indoor environment, the second motor 340 can be driven to rotate to open the fresh air inlet 311 of the fresh air housing 310.

[0064] In addition, a filter can be installed inside the fresh air housing 310 of this application, so that the outdoor air drawn in by the fresh air module 300 can be filtered before being introduced into the indoor environment, thereby further improving the air quality of the indoor environment.

[0065] Example 2 The fresh air conditioning control method of this application may specifically include the following steps: The indoor and outdoor carbon dioxide concentrations, indoor and outdoor temperatures can be obtained by installing temperature sensors and carbon dioxide concentration sensors on both the fresh air module and the air conditioner itself. Compare the indoor carbon dioxide concentration with the first preset carbon dioxide concentration, and compare the indoor carbon dioxide concentration with the outdoor carbon dioxide concentration; If the indoor carbon dioxide concentration is greater than the first preset carbon dioxide concentration and the outdoor carbon dioxide concentration, it means that the indoor carbon dioxide concentration is too high and fresh air needs to be supplied to the indoor environment. Therefore, the fresh air module can be turned on. Obtain the difference between indoor and outdoor carbon dioxide concentrations, as well as the difference between indoor and outdoor temperatures; When the difference between the indoor and outdoor carbon dioxide concentrations is greater than the second preset carbon dioxide concentration, and the difference between the indoor and outdoor temperatures is less than the first preset temperature, it indicates that the difference between the indoor and outdoor carbon dioxide concentrations is too large and the temperature difference between the indoor and outdoor environments is small. In this case, the second fresh air inlet can be opened by switching the component, so that fresh air with low carbon dioxide concentration can be directly introduced into the indoor environment through the second fresh air inlet to achieve the purpose of effectively improving the indoor carbon dioxide concentration. Since the outdoor and indoor temperatures are close, the fresh air has little impact on the indoor temperature. When the difference between the indoor and outdoor carbon dioxide concentrations is greater than the second preset carbon dioxide concentration, and the difference between the indoor and outdoor temperatures is greater than the first preset temperature, the switching component controls the second fresh air inlet to close. In this way, fresh air can enter the air conditioning duct through the first fresh air inlet for heat exchange, which can reduce the impact of fresh air on the indoor temperature. If the difference between the indoor and outdoor carbon dioxide concentrations is less than the second preset carbon dioxide concentration, it means that the indoor and outdoor carbon dioxide concentrations are not significantly different. In this case, the impact of fresh air on the indoor temperature can be reduced first. Therefore, the switching component controls the second fresh air inlet to close, so that the fresh air can be heat-exchanged through the air conditioning duct of the air conditioner before being introduced into the indoor environment.

[0066] In the fresh air conditioning control method proposed in this application, by acquiring the indoor and outdoor carbon dioxide concentrations, it is possible to determine whether the indoor carbon dioxide concentration is too high and whether the indoor carbon dioxide concentration can be reduced by introducing fresh air from the outdoor environment into the indoor environment. By controlling the opening and closing of the second fresh air inlet of the fresh air module through a switching component, when the difference between the indoor and outdoor carbon dioxide concentrations is large and the temperature difference between the indoor and outdoor environments is small, the fresh air output by the fresh air module can be directly introduced into the room through the second fresh air inlet. When the difference between the indoor and outdoor carbon dioxide concentrations is large and the temperature difference between the indoor and outdoor environments is large, the fresh air output by the fresh air module can be heat-exchanged by the air conditioning unit before being introduced into the indoor environment. When the difference between the indoor and outdoor carbon dioxide concentrations is small, the fresh air output by the fresh air module can be heat-exchanged by the air conditioning unit before being introduced into the indoor environment. This effectively improves the problem of excessively high indoor carbon dioxide concentration while reducing the impact of fresh air on the indoor temperature.

[0067] Example 3 When the indoor ambient temperature is not regulated by the air conditioner itself, in order to improve the indoor carbon dioxide concentration, the fresh air conditioner of this application can be set to a single-operation fresh air normal mode. That is, when the difference between the indoor and outdoor carbon dioxide concentrations is less than a second preset carbon dioxide concentration, and the difference between the indoor and outdoor temperatures is less than a second preset temperature, the frequency of the air conditioner compressor is adjusted to a low frequency. When the difference between the indoor and outdoor carbon dioxide concentrations is less than the second preset carbon dioxide concentration, and the difference between the indoor and outdoor temperatures is greater than the second preset temperature, the air conditioner compressor frequency is adjusted to medium frequency, the second preset temperature is greater than the first preset temperature, and the medium frequency is higher than the low frequency.

[0068] In some implementations, when the difference between the indoor and outdoor ambient temperatures is less than a first preset temperature, the switching component controls the first opening to close and the second opening to open.

[0069] When the difference between the indoor and outdoor ambient temperatures is greater than the first preset temperature but less than the second preset temperature, the switching component controls the first opening to open and the second opening to close. When the difference between the indoor and outdoor ambient temperatures exceeds the second preset temperature, the switching component controls the first opening to open and the second opening to close.

[0070] In some implementations, the fan is turned off when the difference between the indoor and outdoor ambient temperatures is less than a first preset temperature. When the difference between the indoor and outdoor ambient temperatures is greater than the first preset temperature but less than the second preset temperature, the fan speed is adjusted to the first speed. If the difference between the indoor and outdoor ambient temperatures is greater than the second preset temperature, the fan speed will be adjusted to the second speed, which is higher than the first speed.

[0071] Example 4 After the fresh air function of the air conditioner in this application is turned on, it is necessary to consider the temperature difference between the indoor and outdoor environments, as well as the concentration difference between the indoor and outdoor carbon dioxide concentrations. Therefore, the air conditioner in this application can be switched to a single-function intelligent fresh air mode. Specifically: Fresh air conditioning control methods include: When the difference between indoor and outdoor ambient temperatures is greater than the second preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is greater than the third preset carbon dioxide concentration, the switching component controls the first opening to close and the second opening to open. When the difference between indoor and outdoor ambient temperatures is greater than a second preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than a third preset carbon dioxide concentration, the switching component controls the first opening to open and the second opening to close.

[0072] In some implementations, when the difference between the indoor and outdoor carbon dioxide concentrations is greater than a third preset carbon dioxide concentration but less than a fourth preset carbon dioxide concentration, the fan speed is adjusted to the first speed. If the difference between the indoor and outdoor carbon dioxide concentrations exceeds the fourth preset carbon dioxide concentration, the fan will be turned off.

[0073] In some implementations, when the difference between the indoor and outdoor carbon dioxide concentrations is less than a third preset carbon dioxide concentration, the fan speed is adjusted to a second speed, which is higher than the first speed.

[0074] In some implementations, when the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than a first preset temperature but less than a second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than a third preset carbon dioxide concentration, the fan is turned off, the switching component controls the first opening to close, and controls the second opening to open. When the difference between indoor and outdoor ambient temperatures is greater than the first preset temperature but less than the second preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than the third preset carbon dioxide concentration, the fan speed is adjusted to low, the switching component controls the first opening to close, and controls the second opening to open.

[0075] In some implementations, when the difference between the indoor and outdoor ambient temperatures is less than a first preset temperature, the switching component closes the first opening, opens the second opening, and shuts down the fan.

[0076] Example 5 With the air conditioner itself already controlling the indoor temperature, a smart fresh air mode under cooling can be used to improve the indoor carbon dioxide concentration. The control method in this mode is as follows: When the indoor and outdoor ambient temperatures differ, the switching component will open the first opening and close the second opening.

[0077] In some implementations, when the difference between the indoor and outdoor ambient temperatures is greater than a second preset temperature, and the difference between the indoor and outdoor carbon dioxide concentrations is greater than a fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed, and the air conditioner compressor frequency is adjusted to high frequency. When the difference between indoor and outdoor ambient temperatures is greater than the second preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed and the air conditioner compressor frequency is adjusted to high speed. When the difference between indoor and outdoor ambient temperatures is greater than the second preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed and the air conditioner compressor frequency is adjusted to low frequency. The wind speed increases sequentially from low to medium to high, and the frequency increases sequentially from low to medium to high.

[0078] In some implementations, when the difference between the indoor and outdoor ambient temperatures is less than a second preset temperature but greater than a first preset temperature, and the difference between the indoor and outdoor carbon dioxide concentrations is greater than a fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed and the air conditioner compressor frequency is adjusted to high frequency. When the difference between indoor and outdoor ambient temperatures is less than the second preset temperature but greater than the first preset temperature, and when the difference between indoor and outdoor carbon dioxide concentrations is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed and the air conditioner compressor frequency is adjusted to medium frequency. When the difference between indoor and outdoor ambient temperatures is less than the second preset temperature and greater than the first preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed and the air conditioner compressor frequency is adjusted to low frequency.

[0079] In some implementations, when the difference between indoor and outdoor ambient temperatures is less than a first preset temperature and the difference between indoor and outdoor carbon dioxide concentrations is greater than a fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed and the air conditioner compressor frequency is adjusted to medium frequency. When the difference between indoor and outdoor ambient temperatures is less than the first preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the air conditioner compressor frequency is adjusted to medium frequency. When the difference between indoor and outdoor ambient temperatures is less than the first preset temperature, and the difference between indoor and outdoor carbon dioxide concentrations is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the air conditioner compressor frequency is adjusted to low frequency.

[0080] Example 6 When the air conditioner of this application is in the intelligent fresh air mode under cooling, if the indoor ambient temperature is higher than the outdoor ambient temperature, the air conditioner itself controls the indoor ambient temperature through the cooling function.

[0081] Specifically, when the indoor ambient temperature is higher than the outdoor ambient temperature and the air conditioner is in cooling mode, the switching component controls the first fresh air vent to close and the second fresh air vent to open.

[0082] In some implementations, the air conditioner compressor is turned off when the difference between the indoor and outdoor ambient temperatures is greater than a second preset temperature. If the difference between the indoor and outdoor ambient temperatures is less than the second preset temperature but greater than the first preset temperature, the frequency of the air conditioner compressor will be reduced. When the difference between the indoor and outdoor ambient temperatures is less than the first preset temperature, the frequency of the air conditioner compressor is maintained.

[0083] In addition, it should be noted that in this application, the indoor carbon dioxide concentration is Cco2, the outdoor carbon dioxide concentration is Cco2', the difference between the indoor and outdoor carbon dioxide concentrations is ΔCco2 = Cco2 - Cco2', A: first preset carbon dioxide concentration, B: second preset carbon dioxide concentration, the indoor temperature is T0, the outdoor temperature is T0', and the difference between the outdoor and indoor temperatures is ΔT0 = T0' - T0.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A fresh air conditioning control method, characterized in that, The fresh air conditioning unit includes: The air conditioner body has an air conditioning duct, an air inlet and an air outlet, and the air inlet and the air outlet are both connected to the air conditioning duct; The fresh air module has a first fresh air inlet connected to the air conditioning duct, and a second fresh air inlet for direct airflow; and A switching component is provided in the fresh air module, which can controllably open or close the second fresh air inlet; The fresh air conditioning control method includes: The system obtains indoor carbon dioxide concentration, outdoor carbon dioxide concentration, indoor temperature, and outdoor temperature. Compare the indoor carbon dioxide concentration with a first preset carbon dioxide concentration, and compare the indoor carbon dioxide concentration with the outdoor carbon dioxide concentration; When the indoor carbon dioxide concentration is greater than the first preset carbon dioxide concentration and the outdoor carbon dioxide concentration, the fresh air module is turned on. The difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration, as well as the difference between the indoor temperature and the outdoor temperature, are obtained. When the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is greater than a second preset carbon dioxide concentration, and the difference between the indoor temperature and the outdoor temperature is less than a first preset temperature, the switching component controls the second fresh air inlet to open. When the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is greater than a second preset carbon dioxide concentration, and the difference between the indoor temperature and the outdoor temperature is greater than a first preset temperature, the switching component controls the second fresh air inlet to close. If the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is less than the second preset carbon dioxide concentration, the switching component controls the second fresh air inlet to close. The air conditioner body includes a housing, a fan, and an evaporator. The air conditioning duct is disposed in the housing. The fan and the evaporator are arranged in sequence in the direction from the air inlet to the air outlet. The first fresh air inlet includes a first opening and a second opening controlled by the switching component. The first opening can communicate with the air inlet side of the fan, and the second opening can communicate with the windward side of the evaporator and is located between the fan and the evaporator. The fresh air conditioning control method further includes: when the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the switching component controls the first opening to close and controls the second opening to open; When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, the switching component controls the first opening to open and the second opening to close. If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, the switching component controls the first opening to open and the second opening to close.

2. The fresh air conditioning control method according to claim 1, characterized in that, When the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is less than the second preset carbon dioxide concentration, and the difference between the indoor temperature and the outdoor temperature is less than the second preset temperature, the frequency of the compressor of the fresh air conditioner is adjusted to a low frequency. When the difference between the indoor and outdoor carbon dioxide concentrations is less than the second preset carbon dioxide concentration, and the difference between the indoor and outdoor temperatures is greater than the second preset temperature, the frequency of the compressor of the fresh air conditioner is adjusted to a medium frequency, the second preset temperature is greater than the first preset temperature, and the medium frequency is higher than the low frequency.

3. The fresh air conditioning control method according to claim 1, characterized in that, If the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the fan is turned off. If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, the fan speed is adjusted to the first fan speed. If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, the fan speed is adjusted to a second speed, which is higher than the first speed.

4. The fresh air conditioning control method according to claim 2, characterized in that, The air conditioner body includes a housing, a fan, and an evaporator. The air conditioning duct is disposed in the housing. The fan and the evaporator are arranged in sequence in the direction from the air inlet to the air outlet. The first fresh air inlet includes a first opening and a second opening controlled by the switching component. The first opening can communicate with the air inlet side of the fan, and the second opening can communicate with the windward side of the evaporator and is located between the fan and the evaporator. The fresh air conditioning control method also includes: When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the third preset carbon dioxide concentration, the switching component controls the first opening to close and controls the second opening to open. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the switching component controls the first opening to open and the second opening to close.

5. The fresh air conditioning control method according to claim 4, characterized in that, If the difference between the indoor carbon dioxide concentration and the outdoor carbon dioxide concentration is greater than the third preset carbon dioxide concentration and less than the fourth preset carbon dioxide concentration, the fan speed is adjusted to the first fan speed. If the difference between the indoor and outdoor carbon dioxide concentrations is greater than the fourth preset carbon dioxide concentration, the fan will be turned off.

6. The fresh air conditioning control method according to claim 5, characterized in that, If the difference between the indoor and outdoor carbon dioxide concentrations is less than the third preset carbon dioxide concentration, the fan speed is adjusted to a second speed, which is higher than the first speed.

7. The fresh air conditioning control method according to claim 4, characterized in that, If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the third preset carbon dioxide concentration, the fan will be turned off, the switching component will control the first opening to close, and control the second opening to open. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the first preset temperature and less than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to low, the switching component controls the first opening to close, and controls the second opening to open.

8. The fresh air conditioning control method according to claim 4, characterized in that, If the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the switching component closes the first opening, opens the second opening, and shuts down the fan.

9. The fresh air conditioning control method according to claim 1, characterized in that, The air conditioner body includes a housing, a fan, and an evaporator. The air conditioning duct is disposed in the housing. The fan and the evaporator are arranged in sequence in the direction from the air inlet to the air outlet. The first fresh air inlet includes a first opening and a second opening controlled by the switching component. The first opening can communicate with the air inlet side of the fan, and the second opening can communicate with the windward side of the evaporator and is located between the fan and the evaporator. When the indoor ambient temperature and the outdoor ambient temperature are different, the switching component opens the first opening and closes the second opening.

10. The fresh air conditioning control method according to claim 9, characterized in that, When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than a second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than a fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed, and the compressor frequency of the fresh air conditioner is adjusted to high frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to high frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to low frequency. The terms "medium wind" and "high wind" increase sequentially, as do the terms "low frequency" and "high frequency".

11. The fresh air conditioning control method according to claim 10, characterized in that, When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature and greater than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed and the compressor frequency of the fresh air conditioner is adjusted to high frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature and greater than the first preset temperature, and when the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the fourth preset carbon dioxide concentration and greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed and the compressor frequency of the fresh air conditioner is adjusted to medium frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature and greater than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to low frequency, wherein the medium frequency is greater than the low frequency and less than the medium frequency.

12. The fresh air conditioning control method according to claim 11, characterized in that, When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is greater than the fourth preset carbon dioxide concentration, the fan speed is adjusted to high speed, and the compressor frequency of the fresh air conditioner is adjusted to medium frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the fourth preset carbon dioxide concentration but greater than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to medium frequency. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, and the difference between the indoor ambient carbon dioxide concentration and the outdoor ambient carbon dioxide concentration is less than the third preset carbon dioxide concentration, the fan speed is adjusted to medium speed, and the compressor frequency of the fresh air conditioner is adjusted to low frequency.

13. The fresh air conditioning control method according to claim 1, characterized in that, When the indoor ambient temperature is higher than the outdoor ambient temperature and the air conditioner is in cooling mode, the switching component controls the first fresh air vent to close and controls the second fresh air vent to open.

14. The fresh air conditioning control method according to claim 13, characterized in that, If the difference between the indoor ambient temperature and the outdoor ambient temperature is greater than the second preset temperature, the compressor of the fresh air conditioner will be turned off. If the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the second preset temperature but greater than the first preset temperature, the frequency of the compressor of the fresh air conditioner will be reduced. When the difference between the indoor ambient temperature and the outdoor ambient temperature is less than the first preset temperature, the frequency of the compressor of the fresh air conditioner is maintained.

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