Air supply device and control method

Abstract

The air supply device is used for supplying air into a room and comprises an air supply pipeline communicating the interior and the exterior of the room, a draught fan and a heat exchanger are arranged on the air supply pipeline, and the draught fan enables airflow to enter the room after heat exchange through the heat exchanger. Fresh air is preheated through the heat exchanger, the heated fresh air is sent into a room, the temperature is kept constant, and discomfort caused by temperature reduction is avoided. And the heat exchanger is completely independent from the air conditioning system, so that the influence on the dehumidification efficiency is effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of fresh air technology, and particularly to air supply devices and control methods. Background Technology

[0002] As people's living standards improve, their requirements for indoor environments are also increasing. Although traditional air conditioning systems can achieve cooling and heating functions, in the hot and humid environment of summer, air conditioning systems not only need to cool the indoor air, but also need to dehumidify it to maintain indoor comfort.

[0003] Traditional dehumidification methods mainly rely on the evaporator of the refrigeration system for dehumidification, but this method is energy-intensive and can easily lead to a drop in indoor temperature during the dehumidification process, making people feel uncomfortable. Summary of the Invention

[0004] To solve at least one of the above-mentioned technical problems, on the one hand, the present invention provides an air supply device that preheats fresh air through a heat exchanger to achieve constant indoor temperature and dehumidification.

[0005] On the other hand, the present invention also proposes an air supply method for the air supply device.

[0006] The technical solution adopted in this invention is to design an air supply device for supplying air into the room, including an air supply duct connecting the indoor and outdoor areas, and a fan and a heat exchanger installed on the air supply duct. The fan causes the airflow to exchange heat through the heat exchanger before entering the room.

[0007] In some embodiments, the heat exchanger is disposed on the side wall of a ventilation duct adjacent to an outdoor air conditioning condenser.

[0008] In some embodiments, the heat exchanger is located in the same chamber as the outdoor air conditioner condenser.

[0009] In some embodiments, a temperature sensor for detecting indoor temperature and a humidity sensor for detecting indoor humidity are also included, and the fan controls the air volume based on the detection information from the temperature sensor and the humidity sensor.

[0010] In some embodiments, a wind speed sensor for detecting the air supply speed is also included, and a flow control valve is provided at the air outlet of the air supply duct. The flow control valve and / or the fan control the flow rate of the flow control valve based on the detection information of the wind speed sensor.

[0011] In some embodiments, an air filter is provided at the air inlet of the air supply duct, and the fan and heat exchanger are located between the air filter and the flow control valve.

[0012] In some embodiments, the flow control valve is a louvered damper with an adjustable opening angle.

[0013] In some embodiments, a temperature sensor for detecting the temperature of the airflow in the air supply duct and a humidity sensor for detecting the humidity of the airflow in the air supply duct are also included. The louvered damper controls the opening and closing angle of the blades based on the temperature and humidity difference between the airflow in the room and the airflow in the air supply duct and the wind speed in the air duct.

[0014] An air supply control method is used for the aforementioned air supply device. Based on the temperature difference ΔT and humidity difference ΔH between the indoor airflow and the air supply duct, and the wind speed ΔV in the duct, the angle θ of the louver damper blades is controlled as θ = θ0 + K1·ΔT + K2·ΔH + K3·ΔV; K1, K2, and K3 are the proportional coefficients of the PID controller.

[0015] In some implementations, K1, K2, and K are adjusted when the heat exchange efficiency η < 90%; η = (actual heat exchange) / (theoretical maximum heat exchange) to increase η.

[0016] An air supply control method for the aforementioned air supply device first records the user's fingerprint information so that the recorded fingerprint information corresponds to the preset temperature and humidity required indoors; then, it controls the air supply based on the fingerprint information recognized by the fingerprint recognition device so that the indoor temperature and humidity reach the required preset temperature and humidity.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention preheats fresh air using a heat exchanger. The heated fresh air is then delivered indoors to maintain a constant temperature, avoiding discomfort caused by temperature drops. The heat exchanger is designed to be completely independent of the air conditioning system, effectively preventing any impact on dehumidification efficiency.

[0019] It consists of air outlets, heat exchangers, air supply fans, and air supply ducts. When the indoor temperature drops due to dehumidification in the air conditioning cooling mode, it can use the heat from the condenser to preheat the fresh air to achieve a constant indoor temperature by combining the corresponding control algorithm.

[0020] A control method that dynamically adjusts the blade angle of the louver damper by combining parameters such as fresh air temperature, humidity, and wind speed optimizes heat exchange efficiency. Attached Figure Description

[0021] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. To illustrate the details and facilitate understanding of its principles, the drawings are not necessarily to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Wherein:

[0022] Figure 1 This is a schematic diagram of an air supply device.

[0023] Figure 2 This is a schematic diagram of an air supply device used in conjunction with an air conditioner.

[0024] Figure 3 This is a schematic diagram showing that the heat exchanger of the air supply device and the condenser of the air conditioner are located in the same chamber.

[0025] Figure 4 This is a schematic diagram of the air supply control method.

[0026] Figure 5 This is a schematic diagram of a control method that combines fingerprint recognition with air conditioning.

[0027] In the picture:

[0028] 1. Air supply duct;

[0029] 2. Heat exchanger;

[0030] 3. Fan;

[0031] 4. Condenser;

[0032] 5. Temperature sensor;

[0033] 6. Humidity sensor;

[0034] 7. Air filter;

[0035] 8. Louvered air valve;

[0036] 9. Chamber. Detailed Implementation

[0037] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the invention covered by the claims. Furthermore, not all combinations of the features described in the embodiments are necessary for the inventive solution.

[0038] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0039] Example

[0040] As people's living standards improve, their requirements for indoor environments are also increasing. While traditional air conditioning systems can provide both cooling and heating, in hot and humid summer conditions, they not only need to cool the indoor air but also dehumidify it to maintain comfort. Traditional dehumidification methods primarily rely on the evaporator of the refrigeration system, but this method is energy-intensive and can easily lead to a drop in indoor temperature during dehumidification, causing discomfort.

[0041] Therefore, such as Figure 1 As shown, an air supply device for supplying air to an indoor space is provided, including an air supply duct 1 connecting the indoor and outdoor spaces. A fan 3 and a heat exchanger 2 are installed on the air supply duct 1. The fan 3 causes the airflow to exchange heat through the heat exchanger 2 before entering the room. The heat exchanger 2 can be a plate type, heat pipe type, or other type, and can be nested within the air duct to achieve heat exchange between the exhaust air from the condenser 4 and the incoming fresh air.

[0042] In this air supply device, outside air is introduced through the air supply duct 1 and first transported to the heat exchanger 2 by the fan 3 for heat exchange. The heat exchanger 2 forms a thermal coupling relationship with the condenser 4 in the air conditioning system. When the air conditioning system is running, the condenser 4 discharges condensation heat and transfers this heat to the incoming fresh air through the heat exchanger 2. The heated fresh air is then sent into the room, effectively reducing the humidity of the fresh air and compensating for the temperature drop caused by traditional dehumidification methods, thereby ensuring that the indoor air temperature is maintained within a relatively constant and comfortable range. Through this structure, the fresh air not only achieves dual regulation of temperature and humidity before entering the room, but also reduces the energy consumption caused by relying solely on the evaporator for dehumidification.

[0043] Compared to existing technologies, this system can fully utilize the waste heat discharged from condenser 4, achieving energy recovery and reuse, and improving the overall energy efficiency of the system. Simultaneously, because the fresh air is pre-heated before being introduced, it avoids discomfort caused by excessively low room temperatures, improving human comfort. Therefore, while ensuring indoor environmental comfort, it effectively reduces energy consumption during the operation of the air conditioning system, possessing significant practical value and promotional potential. The heat exchanger design is completely independent of the air conditioning system, effectively preventing any impact on dehumidification efficiency.

[0044] Furthermore, such as Figure 2 As shown, the heat exchanger 2 is installed on the side wall of the ventilation duct adjacent to the outdoor air conditioning condenser 4.

[0045] The heat exchanger 2 is installed on the side wall of the air supply duct 1, which is adjacent to the outdoor air conditioner condenser 4. This structural design allows the heat exchanger 2 to directly contact the high-temperature air discharged from the condenser 4 or the heat conducted on the surface of the condenser 4, thereby achieving efficient heat exchange.

[0046] When fresh air enters the air supply duct 1 under the action of fan 3, it absorbs the waste heat released by condenser 4 as it flows over the surface of heat exchanger 2, thus raising the temperature of the fresh air. Because heat exchanger 2 and condenser 4 are spatially adjacent, the heat transfer path is shortened, and heat loss during the transfer process is minimized, ensuring heat exchange efficiency. This arrangement not only fully utilizes the waste heat resources of condenser 4, but also allows heat exchanger 2 to heat the fresh air without requiring additional energy consumption.

[0047] When the air conditioning system is dehumidifying, it avoids the problem of indoor air temperature drop caused by reduced fresh air humidity, thus improving indoor thermal comfort. At the same time, it effectively reduces the burden on the evaporator, achieving energy saving and consumption reduction. Therefore, it shows significant advantages in terms of structural compactness, heat exchange efficiency, and comfort improvement.

[0048] Furthermore, such as Figure 3 As shown, the heat exchanger 2 and the outdoor air conditioner condenser 4 are located in the same chamber 9.

[0049] The heat exchanger 2 and the outdoor air conditioner condenser 4 are housed in the same chamber, for example, inside the casing of the outdoor unit. The heat exchanger 2 is located in the middle of the air supply duct, sharing part of the chamber space with the condenser 4. This structure allows the heat exchanger 2 to be directly within the heat dissipation environment of the condenser 4. When the air conditioning system is running, the high-temperature air and radiant heat generated by the condenser 4 can be efficiently transferred to the heat exchanger 2. When the fresh air from outside flows through the air supply duct under the action of the fan 3, it can exchange heat with the waste heat released by the condenser 4 in the area of ​​the heat exchanger 2, thus being heated before entering the room.

[0050] Because heat exchanger 2 and condenser 4 are located in the same chamber and are adjacent to each other, the heat transfer path is short, avoiding energy loss and significantly improving heat exchange efficiency. With this arrangement, the temperature of the fresh air can be compensated after dehumidification, avoiding the room temperature drop caused by traditional evaporator dehumidification, thus maintaining indoor comfort.

[0051] Furthermore, by fully utilizing the waste heat discharged from condenser 4, energy recovery and utilization are achieved, reducing the overall energy consumption of the system. Thus, this structure not only simplifies installation space and improves the compactness of the device, but also balances energy efficiency and comfort.

[0052] Furthermore, it also includes a temperature sensor 5 for detecting indoor temperature and a humidity sensor 6 for detecting indoor humidity, and the fan 3 controls the air supply volume based on the detection information from the temperature sensor 5 and the humidity sensor 6.

[0053] The air supply device also includes a temperature sensor 5 and a humidity sensor 6 installed indoors for real-time detection of indoor air temperature and humidity parameters. The fan 3 is connected to the aforementioned sensor signals and can dynamically adjust the air supply volume based on the detection information. For example, a control unit such as a microcontroller can be used to control the operation of the fan 3 based on the sensor data.

[0054] When the indoor temperature shows a downward trend due to dehumidification operation, the control system can increase the air volume of fan 3 to send more fresh air heated by heat exchanger 2 into the room, thereby compensating for the room temperature. When the indoor humidity is too high, fan 3 can appropriately increase the air volume to accelerate the renewal rate of dehumidified air, thereby achieving effective humidity control.

[0055] By jointly detecting and adjusting temperature and humidity, indoor air can be kept within a comfortable range, avoiding the shortcomings of controlling a single parameter. This structure not only enhances the intelligence of the air supply device but also reduces manual intervention, improving the system's stability and adaptability.

[0056] Meanwhile, precise control of the air supply volume based on the detection results helps reduce energy consumption and achieve energy-saving operation. Therefore, this implementation method can further improve the system's energy efficiency and practicality while maintaining indoor air comfort.

[0057] Furthermore, it also includes a wind speed sensor for detecting the air supply speed, and a flow control valve is provided at the air outlet of the air supply duct 1. The flow control valve and / or the fan 3 control the flow rate of the flow control valve according to the detection information of the wind speed sensor.

[0058] The air supply device also includes a wind speed sensor installed in the air supply duct 1 for real-time detection of the airflow velocity. A flow control valve is installed at the air outlet of the air supply duct 1. The flow control valve and the fan 3 are both electrically connected to the wind speed sensor, and the air supply volume can be dynamically adjusted according to the detection information.

[0059] When the wind speed sensor detects that the airflow velocity in the duct is too high, the control system can appropriately reduce the opening of the flow control valve or reduce the speed of the fan 3 to avoid excessive air supply causing uneven indoor airflow and increased noise; when the wind speed is insufficient, the fresh air supply can be ensured by increasing the opening of the flow control valve or increasing the speed of the fan 3.

[0060] Through the coordinated action of the wind speed sensor, fan 3, and flow control valve, the air supply device can maintain a stable and appropriate air supply speed under different operating conditions, ensuring uniform indoor air distribution and improving comfort.

[0061] Meanwhile, precise wind speed adjustment can also avoid energy waste and improve system operating efficiency. This achieves precise control of the airflow, balancing energy efficiency and comfort, and enhancing the intelligence and applicability of the device.

[0062] Furthermore, an air filter 7 is provided at the air inlet of the air supply duct 1, and the fan 3 and heat exchanger 2 are located between the air filter 7 and the flow control valve.

[0063] The air inlet of the air supply duct 1 is equipped with an air filter 7, which includes a filter screen, adsorption material, etc., to perform preliminary purification of the incoming fresh air, remove dust, particulate matter and some harmful substances from the air, thereby ensuring the cleanliness of the air entering the room.

[0064] The fan 3 and heat exchanger 2 are arranged sequentially between the air filter 7 and the flow control valve, so that after the filtered fresh air enters the duct, it is first pressurized by the fan 3 and delivered to the heat exchanger 2 area to exchange heat with the waste heat of the condenser 4. Then, the flow control valve at the air outlet adjusts the amount of air entering the room.

[0065] Air filter 7 ensures the cleanliness of the fresh air source, preventing dust and impurities from entering the fan 3 and heat exchanger 2, thus avoiding efficiency reduction or malfunctions caused by dust accumulation. Positioning the fan 3 and heat exchanger 2 after the filter allows for long-term stable operation in a clean airflow environment, extending their service life. Furthermore, placing the fan 3 and heat exchanger 2 before the flow control valve ensures that the regulated airflow has undergone pressurization and heat exchange, resulting in a more stable and controllable air delivery effect. This structure not only improves air quality but also optimizes the air delivery path, offering energy efficiency, durability, and comfort.

[0066] Furthermore, the flow control valve is a louvered air valve 8 with an adjustable opening and closing angle.

[0067] The flow control valve is a louvered damper 8 with an adjustable opening angle. This damper consists of multiple rotatable blades, and the rotation angle of each blade can be synchronously adjusted by a drive mechanism, thereby controlling the opening degree of the airflow at the outlet of the air supply duct 1.

[0068] When the louvers are fully open, the airflow resistance in the duct is minimal, allowing for a large volume of air to be delivered. When the louvers are partially closed, the airflow channel narrows, and the air volume is reduced accordingly. When the louvers are closed to a specific angle, the direction of the airflow can be effectively changed, making the indoor air distribution more uniform.

[0069] Compared to traditional fixed-opening valves, it can more flexibly adapt to different working conditions. At the same time, the louvered damper 8 maintains a certain ventilation area even when partially closed, preventing airflow impact or excessive noise due to rapid closure, thus ensuring stable and comfortable operation. Different wind speeds and directions can be set according to the rate of temperature change and indoor occupancy density.

[0070] Through linkage control with the wind speed sensor and the fan 3, the louver damper 8 can achieve dual adjustment of air volume and air direction, which further improves indoor air quality and comfort, while taking into account energy saving effect and long-term stable operation of the equipment.

[0071] Furthermore, it also includes a temperature sensor 5 for detecting the temperature of the airflow in the air supply duct 1 and a humidity sensor 6 for detecting the humidity of the airflow in the air supply duct 1. The louvered air valve 8 controls the opening and closing angle of the blades based on the temperature and humidity difference between the indoor airflow and the airflow in the air supply duct 1 and the wind speed in the air duct.

[0072] The air supply device also includes an airflow temperature sensor 5 and an airflow humidity sensor 6 arranged in the air supply duct 1, for real-time detection of the temperature and humidity parameters of the fresh air in the duct.

[0073] The louvered air valve 8 is not only connected to the wind speed sensor, but can also be controlled based on the difference between the indoor temperature and humidity and the air temperature and humidity in the duct.

[0074] When the test results show that the air temperature in the air supply duct 1 is significantly lower than the indoor temperature, the system can appropriately reduce the opening angle of the louvered damper 8 to reduce the temperature fluctuation caused by the low-temperature airflow entering the room; when the supply air humidity is higher than the indoor humidity, the heat exchange and dehumidification effect with the condenser 4 can be accelerated by appropriately adjusting the blade opening and airflow speed, thereby reducing the humidity entering the room.

[0075] When the difference between indoor and outdoor temperature and humidity is small and the wind speed is suitable, the damper can be at a large opening to achieve efficient air delivery. Through this comprehensive adjustment method based on the difference of multiple parameters, the louver damper 8 can achieve precise control of air volume, air speed and air quality while ensuring indoor comfort. This effectively avoids the problems of insufficient comfort or increased energy consumption caused by single parameter control, and improves the intelligence and energy efficiency of the system.

[0076] The air supply fan can be set with different wind speeds and directions according to the rate of temperature change and the density of people in the room; temperature and humidity sensors can detect indoor temperature and humidity in real time, and combine with corresponding control algorithms to achieve constant temperature and dehumidification function.

[0077] In the default mode, the humidity and temperature targets are 50% and 27°C, respectively. Users can also set the target humidity and temperature according to their personal needs, which will be recorded by the memory module for automatic adjustment next time.

[0078] When the humidity sensor detects that the humidity is greater than 70% for more than 5 minutes, the air conditioner turns on the cooling and dehumidification mode. The temperature sensor and humidity sensor monitor the indoor temperature and humidity in real time, and the outdoor condenser starts to exhaust air and dissipate heat.

[0079] To maintain a constant indoor temperature, the fresh air duct is opened, and the heat exchanger starts working, using the heat from the condenser to preheat the fresh air. The treated air is then delivered into the room, which can both dehumidify and maintain the indoor temperature while continuously introducing fresh air, thus improving indoor air quality.

[0080] like Figure 4 As shown, the air supply control method for the air supply device is as follows:

[0081] The temperature difference ΔT and humidity difference ΔH between the indoor air and the air supply duct, as well as the wind speed ΔV in the duct, are obtained. The angle of the louver damper blades is controlled as θ = θ0 + K1·ΔT + K2·ΔH + K3·ΔV; K1, K2, and K3 are the proportional coefficients of the PID controller.

[0082] When the heat exchange efficiency η < 90%, adjust K1, K2, and K; η = (actual heat exchange) / (theoretical maximum heat exchange) to increase η.

[0083] The fresh air duct is equipped with temperature and humidity sensors and wind speed sensors to detect the temperature, humidity and wind speed difference of the fresh air in real time. Using a PID control algorithm, the angle of the variable fins of the heat exchanger can be intelligently adjusted to optimize the heat exchange efficiency.

[0084] The proportional coefficients K1, K2, and K3 are dynamically optimized by the PID controller based on the real-time heat exchange efficiency η. When η < 90%, K1, K2, and K3 are automatically adjusted to improve η.

[0085] This method uses sensors to obtain in real time the temperature difference ΔT and humidity difference ΔH between the indoor air and the air supply duct, as well as the wind speed ΔV in the air supply duct, and uses these as inputs to adjust the blade angle θ of the louver damper.

[0086] The specific calculation formula is: θ=θ0+K1·ΔT+K2·ΔH+K3·ΔV, where θ0 is the initial opening degree, and K1, K2, and K3 are the proportional coefficients of the PID controller. This formula comprehensively considers the differences in indoor and outdoor air parameters and wind speed changes, enabling dynamic optimization and adjustment of the air volume and direction.

[0087] When the heat exchange efficiency η is below 90%, the system can adaptively adjust the values ​​of K1, K2, and K3, where the heat exchange efficiency η is defined as the ratio of the actual heat exchange to the theoretical maximum heat exchange. For example, this feedback mechanism can automatically optimize control parameters when the heat exchange effect is insufficient, thereby improving the utilization rate of the heat exchanger and avoiding energy waste. This method not only improves the accuracy of air supply regulation and the system response speed but also balances indoor comfort and energy efficiency, further enhancing the intelligence and applicability of the air supply device.

[0088] Furthermore, such as Figure 5 As shown, the air supply control method incorporates fingerprint recognition to achieve personalized environmental adjustment. Specifically, the system first collects the user's fingerprint information through a fingerprint recognition device, establishes a correspondence between the fingerprint information and the user's desired preset temperature and humidity parameters, and stores this information in the memory module of the control unit.

[0089] When a user enters the room and authenticates their identity via fingerprint recognition, the system automatically retrieves the temperature and humidity settings corresponding to that fingerprint information. These settings are then used as control targets to coordinate the operation of the fans, heat exchangers, and louvered dampers in the air supply system. The working principle of this method lies in using fingerprint recognition to quickly switch between different user needs, allowing the indoor environment to automatically adjust according to individual user preferences, avoiding the tedious manual settings. Its technical advantages include: not only improving the intelligence of air supply control and the human-computer interaction experience, but also meeting the differentiated comfort needs of multiple users.

[0090] Meanwhile, because fingerprint recognition is unique and secure, it can ensure the system's reliability in preventing misoperation and protecting privacy, thereby enhancing the device's applicability and market value.

[0091] By acquiring the indoor temperature and humidity settings set by the user according to their personal preferences and recording the usage time at that temperature, the system automatically adjusts the temperature and humidity targets during dehumidification to create the most comfortable living environment for the user.

[0092] When the air conditioner is dehumidifying, it reads the temperature and humidity settings that the user has used for the longest time based on their fingerprint. If the user does not have corresponding fingerprint information, it can be recorded in real time and the user can set their desired temperature and humidity information, or the air conditioner's default dehumidification mode can be used.

[0093] This system automatically adjusts the dehumidification setting temperature based on the user's own dehumidification habits, requiring only fingerprint recognition, which greatly reduces the user's operation steps and significantly enhances the user experience. The addition of a memory module makes the air conditioner's dehumidification function more intelligent and personalized.

[0094] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0095] Although this document uses a number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention. The order of actions, steps, etc., in the apparatus and methods shown in the specification and drawings can be implemented in any order unless otherwise expressly specified, and provided that the output of a preceding process is not used in a subsequent process. Similar sequential terms used for descriptive convenience (e.g., "firstly," "next," "secondly," "again," "then," etc.) do not imply that the actions must be performed in such an order.

[0096] Those skilled in the art will understand that all directional references (e.g., above, below, up, up, down, down, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the drawings to aid the reader's understanding and do not imply (e.g., a limitation on the scope of the invention as defined by the appended claims) a limitation on the scope of the invention as defined by the appended claims. They are merely for the purpose of facilitating the description of this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation. The directional terms "inside" and "outside" refer to inside or outside relative to the outline of the respective component itself.

[0097] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0098] Additionally, some vague terms (e.g., substantially, certain, generally, etc.) may refer to slight inaccuracies or minor deviations in conditions, quantities, values, or dimensions, some of which are within manufacturing tolerances or limits. It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components; unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. An air supply device for supplying air to a room, comprising an air supply duct communicating between the outside and the inside of the room, characterized by, The air supply pipeline is provided with a fan and a heat exchanger, and the fan makes the airflow pass through the heat exchanger to enter the indoor.

2. The air supply device according to claim 1, wherein The heat exchanger is arranged on the side wall of the ventilation pipeline adjacent to the outdoor air conditioner condenser.

3. The air supply device according to claim 2, wherein The heat exchanger is in the same chamber as the outdoor air conditioner condenser.

4. The air supply device according to claim 1, wherein The fan controls the air supply amount according to the detection information of the temperature sensor and the humidity sensor.

5. The air supply device according to claim 4, wherein The air supply pipeline is provided with a flow control valve, and the flow control valve and / or the fan controls the flow size of the flow control valve according to the detection information of the air speed sensor.

6. The air supply device according to claim 5, wherein The air supply pipeline is provided with an air filter, and the fan and the heat exchanger are located between the air filter and the flow control valve.

7. The air supply device according to claim 5, wherein The flow control valve is a louvered damper with adjustable opening angle.

8. The air supply device according to claim 7, wherein The louvered damper controls the opening angle of the blades according to the temperature and humidity difference between the indoor and the airflow in the air supply pipeline and the air speed in the air supply pipeline.

9. The air supply control method characterized by, For the air supply device as claimed in claim 7 or 8, the angle of the louvered damper blades is controlled according to the temperature difference ΔT, the humidity difference ΔH and the air speed ΔV in the air supply pipeline, and the angle is θ=θ0+K1·ΔT+K2·ΔH+K3·ΔV; K1, K2 and K3 are the proportional coefficients of the PID controller.

10. The air supply control method according to claim 9, wherein When the heat exchange efficiency η<90%, adjust K1, K2 and K to improve η; η=(actual heat exchange amount) / (theoretical maximum heat exchange amount).

11. The air supply control method characterized by For the air supply device as claimed in any one of claims 1 to 8, first, record the fingerprint information of the user, so that the recorded fingerprint information corresponds to the preset temperature and humidity required in the room; then, control according to the fingerprint information recognized by the fingerprint recognition device, so that the room reaches the required preset temperature and humidity.

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