Fresh air control method and fresh air system

Abstract

The application provides a fresh air control method and a fresh air system, comprising the following steps: a detection unit detects a state parameter of fresh air and compares the state parameter with reference data; the fresh air is selectively guided to a cold purification unit or a temperature adjusting unit according to a detection result of the detection unit; the fresh air passing through the cold purification unit or the temperature adjusting unit is detected again, and the fresh air is guided according to a detection result until the fresh air meets a preset condition and enters a room. The fresh air control method provided by the application can purify, humidify or adjust the temperature of the fresh air in a cycle, is suitable for a heating mode and a cooling mode, can realize cooling, secondary filtration and humidification operations simultaneously when the fresh air passes through the cold purification unit, realizes multiple functions, simplifies the structure of the fresh air system, realizes the most functions with the least structure, and improves user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a fresh air control method and a fresh air system. Background Technology

[0002] When air conditioning is on and doors and windows are kept closed for extended periods without air circulation, indoor air quality deteriorates. As more people enter the room, carbon dioxide concentration rises, causing alternating sensations of hot and cold, and in severe cases, dizziness, nausea, and other common "air conditioning sickness." Simultaneously, harmful substances increase dramatically in poor-quality environments, posing a health risk. Current solutions involve using fresh air systems to draw in fresh outdoor air. However, directly introducing untreated outdoor air can lead to significant temperature fluctuations, affecting cooling / heating efficiency.

[0003] A prior art patent with publication number CN110230863A discloses a fresh air control method and a fresh air device, including a first temperature sensor, an air inlet duct, an air inlet fan, a temperature regulating device, and a controller. The first temperature sensor is installed at one end of the air inlet duct and is used to detect the temperature of the external environment where the air inlet duct is located. The air inlet fan is disposed inside the air inlet duct and is used to guide airflow into the air inlet duct. The temperature regulating device is disposed inside the air inlet duct and is used to heat or cool the airflow inside the air inlet duct. Based on the external environment temperature data and a preset value, a temperature regulating command is issued to control the temperature regulating device of the fresh air device to turn on. Although this prior art can heat and regulate the introduced outdoor fresh air, it is only applicable to the introduction of fresh air in heating mode. It cannot control the air quality and humidity of the outdoor fresh air, nor can it reduce the temperature of the fresh air in cooling mode. If dust or insects are attached to the fresh air, it cannot be detected, resulting in a poor user experience. Summary of the Invention

[0004] In view of this, the present invention aims to propose a fresh air control method and a fresh air system to solve the problem that the existing fresh air systems cannot control air quality and humidity.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A fresh air control method includes the following steps:

[0007] The detection unit detects the status parameters of the fresh air and compares them with baseline data;

[0008] Based on the detection results from the detection unit, the fresh air can be selectively directed to the air purification unit or the temperature control unit.

[0009] The fresh air, after passing through the purification or temperature control unit, undergoes re-detection, and its flow direction is controlled based on the detection results until it meets preset conditions before entering the room. The fresh air control method provided by this invention can cyclically purify, humidify, or regulate the temperature of fresh air, applicable to both heating and cooling modes. The fresh air passing through the purification unit simultaneously achieves cooling, secondary filtration, and humidification, simplifying the fresh air system structure while realizing multiple functions. It achieves maximum functionality with minimal structure, enhancing the user experience.

[0010] Furthermore, solenoid valves are installed on the fresh air ducts leading to the cooling and purification unit and the temperature regulation unit. The control system controls the switching and opening of the solenoid valves on different ducts based on the detection results, thereby controlling the fresh air flow to different treatment units. This allows for individual control of each duct, facilitating individual adjustment of temperature, humidity, and purity.

[0011] Furthermore, the humidity threshold H is stored in the control system's memory. 阈值 When the humidity H of the fresh air is lower than the humidity threshold H 阈值 At this time, the control system directs the fresh air flow to the air purification unit, which then humidifies the fresh air. This ensures that the fresh air entering the room meets the required humidity levels, providing a comfortable user experience.

[0012] Furthermore, when the fresh air does not meet the air purity requirements, the control system directs the fresh air flow to the air purification unit, where the fresh air is filtered.

[0013] Furthermore, when the fresh air temperature does not meet the required temperature conditions and is higher than the temperature threshold, the control system directs the fresh air flow to the air purification unit for cooling. Conversely, when the fresh air temperature does not meet the required temperature conditions and is lower than the temperature threshold, the control system directs the fresh air flow to the temperature regulation unit for heating. This ensures that the fresh air entering the room does not cause significant fluctuations in indoor temperature, reducing the impact on cooling or heating performance and making fresh air control more intelligent.

[0014] Furthermore, the temperature condition is |T 检测 -T 室内 |≤A, where A is set to 1~3℃, so that the fresh air is close to the indoor temperature and the fresh air will not cause large fluctuations in the indoor temperature when it is introduced into the room.

[0015] Furthermore, the fresh air that has been cooled and / or humidified by the air purification unit needs to be returned to the detection unit for testing to determine whether it meets the temperature and humidity requirements again. If it meets the requirements, the fresh air that meets the requirements is directly introduced into the room; if the fresh air still does not meet the requirements, the fresh air is reintroduced into the air purification unit or temperature control unit to form a cycle until the temperature and humidity requirements are met.

[0016] Furthermore, if the detection unit detects that the fresh air does not meet the air purity requirements, and the fresh air has been filtered by the air purification unit, the fresh air is controlled to return to the primary filtration unit for filtration, and then passes through the detection unit to form a cycle until the purity requirements are met.

[0017] Furthermore, the fresh air, after being heated by the temperature regulation unit, is returned to the detection unit to determine whether it meets the requirements again. If it does, the fresh air that meets the requirements is directly introduced into the room; if the fresh air still does not meet the requirements, the fresh air re-enters the temperature regulation unit to form a cycle until the temperature meets the requirements.

[0018] Compared with existing technologies, the fresh air control method of the present invention has the following advantages:

[0019] By setting up a cooling and purification unit, the system can perform various intelligent processes such as purification, humidification, and temperature regulation of fresh air. It is suitable for both heating and cooling modes. Fresh air passing through the cooling and purification unit can simultaneously achieve cooling, secondary filtration, and humidification, ensuring that the temperature, humidity, and purity of the fresh air meet ideal conditions, making it more in line with user requirements and improving the user experience.

[0020] The present invention also provides a fresh air system capable of executing the aforementioned fresh air system control method. The fresh air system includes: a first fan, a primary filtration unit, a detection unit, a temperature regulation unit, a cooling and purification unit, and a second fan. The primary filtration unit is disposed between the first fan and the detection unit, and the temperature regulation unit and the cooling and purification unit are both disposed between the detection unit and the second fan.

[0021] Compared with existing technologies, the fresh air system described in this invention has the following advantages: by setting up a cooling and humidification unit, the cooling, filtration and humidification of fresh air are combined into one, realizing multiple functions while simplifying the structure of the fresh air system, achieving the most functions with the least structure, and realizing automatic processing of fresh air. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the fresh air control method described in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram illustrating the specific details of the fresh air control method described in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the primary filtration unit structure according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the primary filtering unit from another perspective according to an embodiment of the present invention;

[0026] Figure 5This is a schematic diagram of the cold cleaning unit structure according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1- Primary filtration unit, 10- Housing, 11- Activated carbon layer, 12- Precision filter layer, 13- Adsorbent cotton layer, 2- Cooling purification unit, 21- Funnel, 22- U-shaped tube, 23- Cooling purification medium, 24- U-shaped trough Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] like Figures 1-5 As shown, the fresh air system provided in this embodiment includes a first fan, a detection unit, a temperature control unit, and a second fan. The first fan is located at the inlet of the fresh air duct and is used to draw fresh air from the outside. The second fan is located at the outlet of the fresh air duct and is used to deliver the air from the fresh air duct into the room. The detection unit and the temperature control unit are located between the two fans. The detection unit is used to detect and judge the quality of the fresh air introduced by the first fan and determine the direction of the fresh air flow. The temperature control unit is located between the detection unit and the second fan. When the detection unit detects that the fresh air temperature does not meet the temperature requirements, the temperature control unit activates to adjust the temperature of the fresh air.

[0031] The fresh air system in this embodiment also includes a primary filtration unit 1 and a cooling and purification unit 2. The primary filtration unit 1 is located between the first fan and the detection unit. After fresh air enters the fresh air duct through the first fan, it is first filtered by the primary filtration unit to remove large particles of dust, insects, and other pollutants. The fresh air after preliminary filtration is then further detected by the detection unit. This ensures that large particulate pollutants and toxic gases in the fresh air are filtered out by the primary filtration unit first, avoiding interference with subsequent steps and preventing damage to the detection unit, thus reducing the workload of the detection unit.

[0032] The air purification unit 2 is located after the detection unit and is used to adjust the purity, humidity and temperature of the fresh air based on the detection results of the detection unit.

[0033] Furthermore, in this embodiment, the temperature regulation unit and the air purification unit 2 can be configured to be connected in parallel or in series. When the two are connected in parallel, the fresh air after the detection unit can be selectively introduced into the temperature regulation unit or the air purification unit; when the two are connected in series, the temperature regulation unit is set after the air purification unit 2.

[0034] The fresh air system provided in this embodiment, compared with the prior art, adds a filtration unit to perform preliminary filtration of fresh air. At the same time, a cooling and purification unit is set up to purify, humidify or cool the fresh air according to the detection results of the detection unit. When the fresh air temperature is too high, the cooling and purification unit cools it down; when the fresh air temperature is too low, the temperature regulation unit heats it up, so that the fresh air processed by the fresh air system is comparable to the indoor temperature. It is applicable to both heating and cooling modes, and can realize automatic temperature and humidity adjustment and filtration to ensure the purity, temperature and humidity of the fresh air, making it more in line with the user's requirements and improving the user experience.

[0035] Furthermore, such as Figures 3-4 As shown, the primary filter unit 1 is configured with a multi-layer filter structure, with the multiple layers distributed sequentially along the air intake direction to enhance its filtration and purification effect on fresh air. Specifically, the primary filter unit includes an activated carbon layer 11, a precision filter layer 12, and an adsorbent cotton layer 13. All three layers are fixed to the housing 10 of the primary filter unit 1, and the order of the three layers can be adjusted. Preferably, the precision filter layer 12 is disposed between the activated carbon layer 11 and the adsorbent cotton layer 13. The wall of the fresh air duct can be directly used as the housing of the primary filter unit 1, or the housing 10 of the primary filter unit 1 can be fixed to the fresh air duct.

[0036] Furthermore, the detection unit includes a temperature sensor, a humidity sensor, and an air quality sensor. The temperature sensor is used to detect the temperature of the fresh air after preliminary filtration, the humidity sensor is used to detect the humidity of the fresh air after preliminary filtration, and the air quality sensor is used to detect the purity of the fresh air after preliminary filtration to determine the flow direction of the subsequent fresh air.

[0037] In this embodiment, the fresh air system also includes solenoid valves installed on each fresh air duct to control and switch the direction of fresh air flow based on the detection results of the detection unit.

[0038] Furthermore, such as Figure 5 As shown, the air purification unit 2 in this embodiment includes a filter assembly, a purification medium 23, and a U-shaped groove 24. Both the filter assembly and the purification medium 23 are located inside the U-shaped groove 24, with the purification medium 23 enclosing the filter assembly. The filter assembly is used for secondary filtration of the fresh air, and the purification medium is used for cooling and regulating the fresh air.

[0039] Furthermore, the filter assembly includes a funnel 21 and a U-shaped tube 22. The funnel 21 is connected to one end of the U-shaped tube 22. Both the funnel 21 and the U-shaped tube 22 are installed inside the U-shaped groove 24, and the cooling and purification medium 23 is also placed inside the U-shaped groove 24. Fresh air enters the U-shaped groove 24 from one side of the funnel 21 and is then discharged to the outside of the cooling and purification unit from the side away from the funnel 21.

[0040] Furthermore, the cooling and purifying medium is wrapped around the outside of the funnel 21 and the U-shaped tube 22, with the inlet of the funnel 21 higher than the liquid surface of the cooling and purifying medium 23, and the end of the U-shaped tube 22 furthest from the funnel 21 lower than the liquid surface of the cooling and purifying medium 23. This allows fresh air to enter the U-shaped tube 22 through the funnel 21, while the fresh air does not come into contact with the cooling and purifying medium at the inlet of the cooling and purifying unit. After passing through the U-shaped tube 22, the fresh air comes into full contact with the cooling and purifying medium outside the outlet of the U-shaped tube 22 before being discharged from the cooling and purifying unit. After passing through the cooling and purifying unit 2, the fresh air undergoes secondary filtration and / or cooling treatment until the state parameters of the fresh air meet the requirements.

[0041] Preferably, the cooling and purifying medium in this embodiment can be water or other media that can perform filtration and temperature regulation. Other solid filter media can also be placed in the funnel 21 and U-shaped tube 22 in this embodiment to achieve sufficient filtration of the fresh air.

[0042] As part of the embodiments of the present invention, such as Figure 1 As shown, a fresh air control method is also provided, which can use the fresh air system described above. Specifically, the control method includes the following steps:

[0043] S1. The detection unit detects the status parameters of the fresh air and compares them with the baseline data;

[0044] Furthermore, after the fresh air introduced by the first fan enters the fresh air duct, it undergoes preliminary filtration through a primary filtration unit before reaching the detection unit. The pre-filtered fresh air then passes through the detection unit, which detects various state parameters within the fresh air duct. These state parameters include the humidity, temperature, and purity of the fresh air, and the detection unit compares the detected state parameters with various baseline data.

[0045] In this embodiment, the preset value stored in the memory can be used as the reference data, or the reference data can be set independently according to the user's needs.

[0046] S2. Based on the detection results of the detection unit, the fresh air can be selectively directed to the air purification unit or the temperature control unit.

[0047] The system compares the status parameters detected by the detection unit with the preset humidity threshold. When the fresh air does not meet the humidity requirements, the control system directs the fresh air flow to the air purification unit, which then humidifies the fresh air.

[0048] When the fresh air is detected to be insufficient to meet the air purity requirements, the control system directs the fresh air flow to the air purification unit for secondary filtration.

[0049] When the detection unit detects that the fresh air does not meet the temperature requirements and the fresh air temperature is higher than the temperature threshold, the control system controls the fresh air to flow to the cooling and purification unit, and the cooling and purification unit cools down the fresh air.

[0050] When the detection unit detects that the fresh air does not meet the temperature requirements and the fresh air temperature is lower than the temperature threshold, the control system controls the fresh air flow to the temperature adjustment unit to heat the fresh air.

[0051] When the detection unit detects that the fresh air meets the requirements of various status parameters, the control system controls the start of the second fan, which then delivers the qualified fresh air into the room.

[0052] Furthermore, solenoid valves are installed on different fresh air ducts (such as the fresh air ducts flowing to the air purification unit and the temperature regulation unit). The control system controls the switching and opening of the solenoid valves on different ducts according to the detection results of the detection unit, so as to control the fresh air flow to different treatment units.

[0053] In this embodiment, the air purity can be set according to the particle size of pollutant particles in the air and / or the content of harmful gases in the air, so as to ensure the purity of the fresh air entering the room.

[0054] Furthermore, the humidity threshold H is stored in the control system's memory. 阈值 When the humidity H of the fresh air is lower than the humidity threshold H 阈值 If the detected fresh air does not meet the humidity requirements, the detection unit will determine that the detected fresh air does not meet the humidity requirements.

[0055] The temperature threshold in the temperature conditions is set based on the current indoor ambient temperature. Preferably, the indoor temperature T can be directly set. 室内 As a temperature threshold, it is used to determine whether the fresh air temperature T detected by the detection unit is within the error range of the indoor temperature. If so, it means that the fresh air temperature is close to the indoor temperature, and no further temperature adjustment is needed; the fresh air entering the room will not cause large fluctuations in the indoor temperature. If not, it means that the fresh air temperature is much lower or much higher than the indoor temperature, and if it enters the room directly, it will easily cause large fluctuations in the indoor temperature, requiring cooling or heating of the fresh air. More preferably, the temperature condition is |T 检测 -T 室内 |≤A, where A is set to 1~3℃.

[0056] S3. The fresh air that has passed through the air purification unit or temperature control unit is re-tested, and the direction of the fresh air flow is controlled according to the test results until the fresh air meets the preset conditions before entering the room.

[0057] After being cooled and / or humidified by the air purification unit, the fresh air needs to be returned to the detection unit for testing to determine whether it meets the temperature and humidity requirements again. If it does, the fresh air that meets the requirements is directly introduced into the room through the second fan. If the fresh air still does not meet the requirements, the fresh air re-enters the air purification unit or the temperature control unit to form a cycle until the temperature and humidity requirements are met.

[0058] If the detection unit detects that the fresh air does not meet the air purity requirements, and the fresh air has been filtered by the air purification unit, the fresh air is controlled to return to the first-level filtration unit for filtration, and then passes through the detection unit to form a cycle until the purity requirements are met.

[0059] The fresh air, after being heated by the temperature control unit, is returned to the detection unit to determine if it meets the temperature requirements again. If it does, the fresh air is directly introduced into the room through the second fan. If the fresh air still does not meet the requirements, it re-enters the temperature control unit to form a cycle until the temperature meets the requirements.

[0060] Furthermore, in this embodiment, the temperature regulation unit and the air purification unit can be configured in parallel. That is, the fresh air detected by the detection unit can be selectively introduced into the temperature regulation unit or the air purification unit for corresponding processing based on the detection result. Alternatively, the temperature regulation unit and the air purification unit can be configured in series, with the temperature regulation unit positioned after the air purification unit. When the purity and humidity of the fresh air processed by the air purification unit meet the requirements, but the temperature is lower than the temperature threshold, the fresh air processed by the air purification unit re-enters the temperature regulation unit for further heating.

[0061] The fresh air system control method provided in this embodiment can purify, humidify, or regulate the temperature of fresh air in a cyclical manner. It is applicable to both heating and cooling modes. Fresh air passing through the cooling and purification unit can simultaneously achieve cooling, secondary filtration, and humidification. This achieves multiple functions while simplifying the structure of the fresh air system, using the fewest structures to achieve the most functions and improving the user experience.

[0062] like Figure 2 As shown in the figure, as one embodiment of the present invention, the fresh air control method specifically includes the following steps:

[0063] S101, The first fan introduces fresh outdoor air into the fresh air duct;

[0064] S102. Fresh air undergoes initial filtration through a primary filtration unit.

[0065] S103. The pre-filtered fresh air passes through the detection unit, which detects the status parameters of the pre-filtered fresh air.

[0066] S201. The detection unit detects and determines whether the purity of the fresh air meets the purity requirements. If yes, proceed to step S202. If no, proceed to step S301. The control system controls the fresh air flow to the air purification unit for further filtration and purification. Then, it returns to S102 and passes through the primary filtration unit for re-filtration.

[0067] S202. The detection unit detects and determines whether the humidity of the fresh air meets the humidity requirements. If yes, proceed to step S203. If no, proceed to step S304. The control system controls the fresh air to flow to the air purification unit and humidifies it.

[0068] S203. The detection unit detects and determines whether the temperature T of the fresh air meets the temperature conditions. If yes, step S302 is executed, and the second fan guides the fresh air into the room. If no, step S204 is executed.

[0069] S204, Reassess the temperature T of the fresh air. 检测 Is it less than the indoor temperature T? 室内 If not, proceed to step S301, whereby the control system directs the fresh air flow to the air purification unit for further cooling; if yes, proceed to step S303.

[0070] S301. Fresh air flows to the air purification unit for cooling or humidification, and after passing through the air purification unit, it is re-tested by the detection unit.

[0071] S302, the second fan guides fresh air that meets all requirements into the room;

[0072] S303. Start the temperature regulation unit and send fresh air into the temperature regulation unit. After being processed by the temperature regulation unit, the fresh air returns to step S203 to determine whether it meets the temperature conditions. Once the temperature conditions are met, the second fan sends the fresh air into the room.

[0073] S304, the fresh air flows to the air purification unit, performs filtration, and then returns to S102 to be filtered again by the primary filtration unit.

[0074] It should be noted that in this embodiment, the order of judgments S201 to S203 can be interchanged or performed simultaneously. If all requirements are met, step S302 is executed directly, and the second fan sends fresh air into the room. If the humidity and / or purity of the fresh air do not meet the requirements, step S301 is executed. If the humidity and purity of the fresh air meet the requirements, but the temperature does not meet the requirements, step S204 is executed.

[0075] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A fresh air control method, characterized in that, Includes the following steps: The detection unit detects the status parameters of the fresh air and compares them with baseline data; The fresh air flow is controlled to the air purification unit or temperature control unit based on the detection results of the detection unit; The fresh air that has passed through the air purification unit or temperature control unit is re-tested, and the direction of the fresh air flow is controlled according to the test results until the fresh air meets the preset conditions before entering the room.

2. The fresh air control method according to claim 1, characterized in that, Solenoid valves are installed on the fresh air flow channels to the cooling and purification unit and the temperature regulation unit. The control system controls the switching and opening of the solenoid valves on different flow channels according to the detection results, so as to control the fresh air flow to different treatment units.

3. The fresh air control method according to claim 1, characterized in that, The humidity threshold H is stored in the control system's memory. 阈值 When the humidity H of the fresh air is lower than the humidity threshold H 阈值 At that time, the control system directs the fresh air flow to the air purification unit, and the air purification unit humidifies the fresh air.

4. The fresh air control method according to claim 1, characterized in that, When the fresh air does not meet the air purity requirements, the control system directs the fresh air flow to the air purification unit, which then filters the fresh air.

5. The fresh air control method according to claim 1, characterized in that, When the fresh air does not meet the temperature requirements and the fresh air temperature is higher than the temperature threshold, the control system directs the fresh air flow to the cooling and purification unit to cool the fresh air. When the fresh air does not meet the temperature requirements and the fresh air temperature is lower than the temperature threshold, the control system directs the fresh air flow to the temperature regulation unit to heat the fresh air.

6. The fresh air control method according to claim 5, characterized in that, The temperature condition is |T 检测 -T 室内 |≤A, where A is set to 1~3℃.

7. The fresh air control method according to claim 1, characterized in that, After being cooled and / or humidified by the air purification unit, the fresh air needs to be returned to the detection unit for testing to determine whether it meets the temperature and humidity requirements. If it does, the fresh air that meets the requirements is directly introduced into the room. If the fresh air still does not meet the requirements, the fresh air will be reintroduced into the air purification unit or temperature control unit to form a cycle until the temperature and humidity meet the requirements.

8. The fresh air control method according to claim 1, characterized in that, If the detection unit detects that the fresh air does not meet the air purity requirements, and the fresh air has been filtered by the air purification unit, the fresh air is controlled to return to the first-level filtration unit for filtration, and then passes through the detection unit to form a cycle until the purity meets the requirements.

9. The fresh air control method according to claim 1, characterized in that, The fresh air, after being heated by the temperature regulation unit, is returned to the test to determine whether it meets the conditions again. If it does, the fresh air that meets the conditions is directly introduced into the room. If the fresh air still does not meet the requirements, the fresh air will re-enter the temperature control unit to form a cycle until the temperature meets the requirements.

10. A fresh air system, characterized in that, The fresh air system is capable of performing any one of claims 1 to 9, wherein the fresh air system comprises: a first fan, a primary filtration unit (1), a detection unit, a temperature control unit, a cooling and purifying unit (2), and a second fan, wherein the primary filtration unit (1) is disposed between the first fan and the detection unit, and the temperature control unit and the cooling and purifying unit (2) are both disposed between the detection unit and the second fan.

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