Internet-of-things pipeline-free distributed whole-house fresh air system based on environmental parameters

Abstract

The invention discloses an internet-of-things pipeline-free distributed whole-house fresh air system based on environmental parameters. An outdoor temperature detection sensor and a human body detection sensor are added to a variable-frequency purification fresh air machine. Compared with a traditional pipeline type fresh air system which feeds purified fresh air into a room according to the volume of the room, the variable-frequency purification fresh air machine is upgraded into a variable-frequency purification fresh air machine which changes the indoor and outdoor air ventilation quantity at any time according to the number of people and the state, and the ventilation quantity is reduced by more than 50%. The system is further upgraded into an Internet of Things pipeline-free distributed fresh air system based on environmental parameters, and the amount of purified fresh air entering each room is intelligently, comprehensively and optimally managed on the basis of two core parameters, namely the temperature deviation between the outdoor temperature of the room and the temperature of 20-26 DEG C of a comfortable temperature area and whether people exist in each room or not. On the premise of guaranteeing indoor health and comfort, energy consumption is minimized, the living environment of residences and hotel guest rooms is better improved to be healthy and comfortable, and lower energy consumption of the residences and the hotel guest rooms is better achieved.

Description

Technical Field

[0001] The present invention is a ductless distributed whole-house fresh air system of the Internet of Things, in particular to a ductless distributed whole-house fresh air system of the Internet of Things based on environmental parameters. Background Art

[0002] The IoT ductless distributed fresh air system is integrated with the IoT intelligent variable frequency exhaust fan installed in the bathroom and the IoT variable frequency purification fresh air fan installed in each bedroom, study, living room, and hotel room (hereinafter referred to as each room) of the whole house. The IoT variable frequency purification fresh air fan has the function of supporting users to adjust the purified fresh air volume at any time, that is, supporting users to adjust the purified fresh air volume sent to each room at any time. The IoT intelligent variable frequency exhaust fan detects the concentration of pollutants such as formaldehyde, benzene, TVOC, and odor in the exhaust air in real time, and controls the fresh air volume of the whole house based on the concentration when the concentration is "exceeding the standard". Although it has made great progress compared with the ducted fresh air system that cannot adjust the purified fresh air volume sent to each room at any time, it has been upgraded from the traditional ducted fresh air system that sets the fresh air volume according to the house volume during installation to the IoT variable frequency purification fresh air fan that changes the fresh air volume according to the number of people at any time. The purified fresh air volume sent to each room has dropped by more than 50%, which has better met the needs of low-energy healthy buildings. However, it is not competent for the needs of intelligent energy saving and environmental protection of low-energy healthy buildings. On the one hand, we don’t know the temperature of the purified fresh air entering each room, that is, we don’t know the outdoor temperature, so we can’t achieve energy-saving optimization of the amount of purified fresh air delivered to each room; on the other hand, we don’t know whether there are people in each room, that is, we don’t know whether purified fresh air should be delivered to each room. The result of not knowing the outdoor temperature is that it is impossible to ensure 30 cubic meters of fresh air per person per hour in the living and learning state and 15 cubic meters of fresh air per person per hour in the rest state, while supporting the deviation of 20℃ to 26℃ between the outdoor temperature and the comfortable temperature zone (referred to as the outdoor temperature deviation), and reasonably adjust the amount of purified fresh air sent to each room, so as to minimize the amount of air with a large temperature difference, so as to consume less energy to keep the indoor temperature of the whole house in the comfort zone; the result of not knowing whether there are people in each room is that it is impossible to decide the operation and suspension of the IoT variable frequency purification fresh air fan according to whether there are people in each room, so that purified fresh air is still sent into each room when no one is in it and it is not needed. On the one hand, purification requires energy consumption, and on the other hand, useless purified fresh air will also cause indoor heat or cold loss, which means increased energy consumption; if the outdoor temperature is not known, it is impossible to support the integration of IoT ductless distributed whole-house purified fresh air, coordinate the amount of fresh air entering each room according to the outdoor temperature, and minimize the energy consumption under the premise of ensuring indoor health and comfort. For example, under the influence of sunlight, it is generally cold in winter, and the air temperature on the sunny side of the house is closer to the comfortable temperature zone than the air temperature on the shady side; it is hot in summer, and the air temperature on the non-sunlit side of the house is closer to the comfortable temperature zone than the air temperature on the sunny side; it is generally cold in winter, and the air temperature during the sunny daytime is closer to the comfortable temperature zone than the air temperature during the non-sunlit night; it is hot in summer, and the air temperature during the non-sunlit night is closer to the comfortable temperature zone than the air temperature during the sunny day. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides an Internet of Things ductless distributed whole-house fresh air system based on environmental parameters, and adds outdoor temperature detection sensors and human body detection sensors to the frequency conversion purification fresh air machine of the Internet of Things that controls the purified fresh air volume based on the outdoor temperature to meet the healthy breathing needs of people in family bedrooms, study rooms, living rooms, and hotel guest rooms. On the one hand, the temperature of the purified fresh air entering each room is detected in real time, that is, the outdoor temperature is detected, and energy-saving optimization of the purified fresh air volume entering each room is achieved by using this as a parameter, so as to keep the indoor temperature in the comfort zone and consume less energy; on the other hand, it detects whether there are people in each room, and determines the operation and suspension of the frequency conversion purification fresh air machine of the Internet of Things that controls the outdoor temperature based on whether there are people in each room. When it is detected that there is no one in each room, the purified fresh air is stopped from being sent in, which not only avoids the energy consumption of purified air, but also avoids the useless purified fresh air from causing indoor heat or cold loss, that is, avoids ineffective energy consumption. Of course, when it is detected that there is no one in each room, the air supply command of the ductless distributed whole-house fresh air optimization and energy saving of the Internet of Things shall be executed in priority according to the parameters of the purified fresh air volume; when it is detected that there are people in each room, according to the instructions of the user, while ensuring the healthy breathing of people in each room in the living and learning state, 30 cubic meters of fresh air volume per person per hour, and 15 cubic meters of fresh air volume per person per hour in the rest state, it supports reasonable adjustment of the purified fresh air volume delivered to each room based on the deviation of 20℃ to 26℃ between the outdoor temperature and the comfortable temperature zone, so as to minimize the amount of air with a large temperature difference, and consume less energy to keep the indoor temperature in the comfort zone; when it is detected that there are people in each room, the air supply command of the ductless distributed whole-house fresh air optimization and energy saving of the Internet of Things shall be executed in priority according to the parameters of the purified fresh air volume, and the air supply shall be stopped when the parameters of the purified fresh air volume are 0.

[0004] When it is integrated into an IoT ductless distributed whole-house fresh air system based on environmental parameters, if it is detected that there are people in some of the rooms and when the outdoor temperature has no deviation or a small deviation from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air is delivered to the occupied rooms according to the user's settings, and the purified fresh air delivery to the unoccupied rooms is stopped; if it is detected that there are people in some of the rooms and the deviation of the outdoor temperature of some rooms from the comfortable temperature zone of 20℃ to 26℃ is large, but the deviation of the outdoor temperature of some rooms from the comfortable temperature zone of 20℃ to 26℃ is small, the amount of purified fresh air delivered to the rooms with large deviations is reduced (stop in all unoccupied rooms); start in all unoccupied rooms with small temperature deviations Automatically replenish, increase the purified fresh air volume sent to the room with smaller deviation when insufficient; when it is detected that some of the rooms are occupied and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, suspend the purified fresh air sent to the occupied rooms and start the purified fresh air sent to the unoccupied rooms to obtain a comfortable living experience; when it is detected that some of the rooms are occupied and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, that is, it is very cold or very hot, suspend the purified fresh air sent to each room, and resume the supply of air to the unoccupied rooms when the negative deviation of the outdoor temperature of the unoccupied room and the comfortable temperature zone of 20℃ to 26℃ is large. In this way, the fresh air volume entering each room is coordinated according to the outdoor temperature, and the energy consumption is minimized under the premise of ensuring indoor health and comfort. For example, under the action of sunlight, in winter, it is generally cold, and the air temperature on the sunny side of the house is closer to the comfortable temperature zone than the air temperature on the shady side; in summer, the air temperature on the non-sunny side of the house is closer to the comfortable temperature zone than the air temperature on the sunny side; in winter, it is generally cold, and the air temperature during the day with sunshine is closer to the comfortable temperature zone than the air temperature at night without sunshine; in summer, the air temperature during the night without sunshine is closer to the comfortable temperature zone than the air temperature during the day with sunshine. From the traditional ducted fresh air system that circulates indoor and outdoor air according to the volume of the house, it is upgraded to the people-oriented system that changes the indoor and outdoor air ventilation volume according to the number of people and status at any time by the variable frequency purification fresh air machine controlled by the Internet of Things based on the outdoor temperature. On the basis of meeting the needs of low-energy healthy buildings relatively well, it is further upgraded to intelligently coordinate and optimize the management of indoor and outdoor air circulation based on the outdoor temperature and whether there are people in each room, so as to better improve the living environment of residential and hotel guest rooms and better achieve greater energy saving of low-energy healthy buildings in residential and hotel guest rooms.

[0005] After the implementation of the present invention, a ductless distributed whole-house fresh air system based on the Internet of Things and environmental parameters is provided. The variable frequency purification fresh air machine controlled by the Internet of Things based on the outdoor temperature is added with an outdoor temperature detection sensor and a human body detection sensor. Based on the outdoor air temperature sent to each room detected by the outdoor temperature detection sensor and whether there is someone in each room detected by the human body detection sensor, the indoor and outdoor air circulation of the whole house is intelligently coordinated and optimized, and the comfortable and energy-saving optimization of the purified fresh air volume entering each room of the house, such as the residence and hotel guest rooms, is achieved, so as to achieve the purpose of being more comfortable and energy-saving.

[0006] The present invention is achieved in that:

[0007] The invention discloses a ductless distributed whole-house fresh air system based on environmental parameters of the Internet of Things, comprising an existing residence, wherein the rooms distributed in the residence include a living room, a living room, a study, a bathroom, etc. The living room is equipped with a variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the living room, the living room is equipped with a variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the living room, the study is equipped with a variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the study, the hotel guest room is equipped with a variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the hotel, and the bathroom is equipped with an intelligent variable frequency exhaust fan of the Internet of Things. The variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the living room, the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the living room, the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature of the study, and the intelligent variable frequency exhaust fan of the Internet of Things are automatically networked and integrated into a ductless distributed fresh air system based on environmental parameters of the Internet of Things. The function of the Internet of Things controller and the controller of the intelligent variable frequency exhaust fan of the Internet of Things can be integrated in the same controller, or can be set up separately. The variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature is connected to the outdoor temperature detection sensor, which supports the detection. The outdoor air temperature sent to each room is measured and reported when it changes or at a set frequency. The variable frequency purification fresh air fan controlled by the Internet of Things based on the outdoor temperature is connected to the human body detection sensor, which supports the detection of whether there is anyone in each room and reports when it changes or at a set frequency. The Internet of Things ductless distributed fresh air system based on environmental parameters intelligently coordinates and optimizes the indoor and outdoor air circulation of the whole house, that is, with health, comfort and energy saving as the goal, intelligent management minimizes the amount of purified fresh air sent to each room, and minimizes energy consumption under the premise of ensuring indoor health and comfort, so as to achieve the purpose of making the whole house and hotel rooms healthier, more comfortable and more energy-saving. The Internet of Things intelligent variable frequency exhaust fan has the ability to detect the formaldehyde, benzene, TVOC and odor concentrations in the air (indoor air terminal) that will be discharged to the outside through the public exhaust duct. The Internet of Things ductless distributed fresh air system based on environmental parameters has the ability to intelligently manage the fresh air volume of the whole house based on the detected formaldehyde, benzene, TVOC and odor concentration parameters, and ensure that indoor air pollutants do not exceed the standard. The variable frequency purification fresh air fan controlled by the Internet of Things based on the outdoor temperature works according to the Internet of Things command, including the following steps:

[0008] a. The variable frequency purification fresh air fan controlled by the Internet of Things based on the outdoor temperature detects the outdoor air temperature to be sent into the room through the outdoor temperature detection sensor, and detects whether there is anyone in the room through the human body detection sensor. If there is a change in the detected outdoor air temperature to be sent into the room and whether there is anyone in the room, it will be reported immediately. If there is no change, it will be reported according to the set reporting cycle;

[0009] b. When the outdoor air temperature to be delivered to the room has no deviation or a small deviation from the comfortable temperature zone of 20°C to 26°C and the variable frequency purification fresh air fan controlled by the Internet of Things based on the outdoor temperature and has not received any command from the Internet of Things, the room with people will be supplied with purified fresh air according to the user's settings, and the room without people will stop supplying purified fresh air;

[0010] c. When the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature receives the Internet of Things command, it means that the Internet connection has been successful and the Internet of Things command is executed;

[0011] d. When the control system of the IoT ductless distributed whole-house fresh air system based on environmental parameters receives the outdoor air temperature to be sent into the room and the information on whether there is someone in the room reported by two or more IoT variable frequency purification fresh air fans controlled by the outdoor temperature, and the deviation of the outdoor air temperature reported by at least one of them from the comfortable temperature zone of 20℃ to 26℃ exceeds the smaller deviation limit, the IoT command is issued:

[0012] ①. When it is detected that some of the rooms are occupied and the temperature deviation between the outdoor temperature of some rooms and the comfortable temperature zone of 20℃ to 26℃ is large, but the temperature deviation between the outdoor temperature of some rooms and the comfortable temperature zone of 20℃ to 26℃ is small, the amount of purified fresh air sent to the occupied rooms with large temperature deviation is reduced, the unoccupied rooms with large temperature deviation are stopped, and the unoccupied rooms with small temperature deviation are started to be supplemented. If the amount is insufficient, the amount of purified fresh air sent to the rooms with small deviation is increased;

[0013] ②. When it is detected that some of the rooms are occupied and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air to the unoccupied rooms will be started, and the purified fresh air to the occupied rooms will be reduced by the same amount to obtain a comfortable living experience;

[0014] ③. When it is detected that there are people in all rooms, and the deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ exceeds the small deviation limit but is less than the very large deviation limit, the number of people using the room will be reduced according to the outdoor temperature table and the number of people using the room will be reduced according to the corresponding proportion. The lower limit of the reduction ratio is 25%, and the upper limit of the reduction ratio is 85%;

[0015] ④. When it is detected that there are people in some rooms and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, that is, it is very cold or very hot, suspend the supply of purified fresh air to each room. When it is very cold or very hot, follow step ② or ③;

[0016] In this way, the amount of fresh air entering each room is coordinated according to the outdoor temperature, minimizing the energy consumption while ensuring indoor health and comfort.

[0017] e. When the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature does not receive the Internet of Things command, it means that the networking is unsuccessful and it works in the single room (such as hotel room) mode:

[0018] (1) When it is detected that there is someone in the room and there is no deviation or a small deviation between the outdoor temperature and the comfortable temperature zone of 20°C to 26°C, the purified fresh air is delivered according to the user's settings when there is someone in the room, and the purified fresh air is stopped when it is detected that there is no one in the room;

[0019] ⑵. When it is detected that there is someone in the room, and the deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ exceeds the small deviation limit but is less than the very large deviation limit, the outdoor temperature table is checked and the number of people using the room is reduced according to the corresponding proportion. The lower limit of the reduction ratio is 25%, and the upper limit of the reduction ratio is 85%. When it is detected that there is no one in the room, the supply of purified fresh air is stopped;

[0020] (3) When it is detected that there is someone in the room and the outdoor temperature deviates greatly from the comfortable temperature zone of 20°C to 26°C, that is, when it is very cold or very hot, the supply of purified fresh air to the room is suspended. When the outdoor temperature deviates greatly from the comfortable temperature zone of 20°C to 26°C, the mode of step (2) is restored;

[0021] The variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature supports networking between devices, and supports the Internet of Things commands as priority execution instructions, to meet the purified fresh air volume used in each room of the whole house and hotel guest rooms, reports the outdoor air temperature sent to each room and whether there are people in each room, and works according to the Internet of Things commands. When the outdoor temperature has no deviation or a small deviation from the comfortable temperature zone of 20°C to 26°C, purified fresh air is sent to each room according to the settings of the users, and the supply of purified fresh air to each room when there are people is stopped.

[0022] The outdoor temperature detection sensor has a temperature detection range of not less than -50°C to +70°C, a change step of not more than 0.5°C, and leads to the air inlet of the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature.

[0023] The human body detection sensor is connected to each room and can effectively and automatically detect the presence of a person or a large animal in the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 , a schematic diagram of the topological structure block diagram of the present invention, Figure 2 , Schematic diagram of the topological structure of the variable frequency purification fresh air fan controlled by the Internet of Things based on outdoor temperature

[0025] 1. Residence, 2. Living room, 3. Living room, 4. Study, 5. Toilet, 6. Internet of Things intelligent variable frequency exhaust fan, 7. Public exhaust duct, 8. Living room Internet of Things variable frequency purification fresh air fan controlled according to outdoor temperature, 9. Living room Internet of Things variable frequency purification fresh air fan controlled according to outdoor temperature, 10. Study Internet of Things variable frequency purification fresh air fan controlled according to outdoor temperature, 11. Internet of Things variable frequency purification fresh air fan controlled according to outdoor temperature, 12. Outdoor temperature detection sensor, 13. Human body detection sensor. DETAILED DESCRIPTION

[0026] like Figure 1 , a schematic diagram of the topological structure block diagram of the present invention, Figure 2 , the schematic diagram of the topological structure of the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature, the present invention is implemented as follows:

[0027] The invention discloses an Internet of Things (IoT) ductless distributed whole-house fresh air system based on environmental parameters, comprising an existing residence 1, wherein the rooms of the residence 1 include a living room 2, a living room 3, a study 4, a bathroom 5, etc., wherein the living room 2 is equipped with a variable frequency purification fresh air fan 9 controlled by the IoT based on outdoor temperature, the living room 3 is equipped with a variable frequency purification fresh air fan 8 controlled by the IoT based on outdoor temperature, the study 4 is equipped with a variable frequency purification fresh air fan 10 controlled by the IoT based on outdoor temperature, the hotel guest room is equipped with a variable frequency purification fresh air fan controlled by the IoT based on outdoor temperature, the bathroom 5 is equipped with an IoT intelligent variable frequency exhaust fan 6, the variable frequency purification fresh air fan 9 controlled by the IoT based on outdoor temperature in the living room, the variable frequency purification fresh air fan 8 controlled by the IoT based on outdoor temperature in the living room, the variable frequency purification fresh air fan 10 controlled by the IoT based on outdoor temperature in the study, and the IoT intelligent variable frequency exhaust fan 6 are automatically networked and integrated into an IoT ductless distributed fresh air system based on environmental parameters, wherein the IoT controller function and the IoT intelligent variable frequency exhaust fan controller can be integrated in the same controller, or can be separately established, and the variable frequency purification fresh air fan 11 controlled by the IoT based on outdoor temperature is connected to the controller. The outdoor temperature detection sensor 12 is connected to support the detection of the outdoor air temperature sent into each room and report it when it changes or report it regularly. The frequency conversion purification fresh air fan 11 controlled by the Internet of Things based on the outdoor temperature is connected to the human detection sensor 13, which supports the detection of whether there is anyone in each room and reports it when it changes or reports it regularly. The Internet of Things ductless distributed fresh air system based on environmental parameters intelligently coordinates and optimizes the indoor and outdoor air circulation of the whole house, that is, with health, comfort and energy saving as the goal, intelligently manages the indoor purified fresh air volume sent into each room, and minimizes energy consumption under the premise of ensuring indoor health and comfort, so as to achieve the purpose of making the whole house and hotel rooms more comfortable, healthier and more energy-saving. The Internet of Things intelligent frequency conversion exhaust fan 6 has the ability to detect the formaldehyde, benzene, TVOC and odor concentration in the air (indoor air terminal) to be discharged to the outside through the public exhaust duct 7. The Internet of Things ductless distributed fresh air system based on environmental parameters has the ability to intelligently manage the fresh air volume of the whole house based on the detected concentration parameters, so as to ensure that indoor air pollutants do not exceed the standard. The frequency conversion purification fresh air fan controlled by the Internet of Things based on the outdoor temperature works according to the Internet of Things command, including the following steps:

[0028] a. The variable frequency purification fresh air fan 11 controlled by the Internet of Things according to the outdoor temperature detects the outdoor air temperature to be sent into the room through the outdoor temperature detection sensor 12, and detects whether there is anyone in the room through the human body detection sensor 13. If there is a change in the detected outdoor air temperature to be sent into the room and whether there is anyone in the room, it will be reported immediately. If there is no change, it will be reported according to the set reporting cycle;

[0029] b. When the outdoor air temperature to be delivered to the room has no deviation or a small deviation from the comfortable temperature zone of 20°C to 26°C and the Internet of Things controls the variable frequency purification fresh air fan 11 according to the outdoor temperature, and no command from the Internet of Things is received, the room with people will be supplied with purified fresh air according to the user's settings, and the room without people will stop supplying purified fresh air;

[0030] c. When the variable frequency purification fresh air fan 11 controlled by the Internet of Things according to the outdoor temperature receives the Internet of Things command, it means that the Internet of Things has been successfully connected and the command of the Internet of Things is executed;

[0031] d. When the control system of the IoT ductless distributed whole-house fresh air system based on environmental parameters receives information about the outdoor air temperature to be sent into the room and whether there is someone in the room reported by two or more IoT variable frequency purification fresh air fans 11 controlled by the outdoor temperature, and the deviation of the outdoor air temperature reported by at least one of them from the comfortable temperature zone of 20°C to 26°C exceeds the smaller deviation limit, the IoT command is issued:

[0032] ①. When it is detected that some of the rooms are occupied and the temperature deviation between the outdoor temperature of some rooms and the comfortable temperature zone of 20℃ to 26℃ is large, but the temperature deviation between the outdoor temperature of some rooms and the comfortable temperature zone of 20℃ to 26℃ is small, the amount of purified fresh air sent to the occupied rooms with large temperature deviation is reduced, the unoccupied rooms with large temperature deviation are stopped, and the unoccupied rooms with small temperature deviation are started to be supplemented. If the amount is insufficient, the amount of purified fresh air sent to the rooms with small deviation is increased;

[0033] ②. When it is detected that some of the rooms are occupied and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air to the unoccupied rooms will be started, and the purified fresh air to the occupied rooms will be reduced by the same amount to obtain a comfortable living experience;

[0034] ③. When it is detected that there are people in all rooms, and the deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ exceeds the small deviation limit but is less than the very large deviation limit, the number of people using the room will be reduced according to the outdoor temperature table and the number of people using the room will be reduced according to the corresponding proportion. The lower limit of the reduction ratio is 25%, and the upper limit of the reduction ratio is 85%;

[0035] ④. When it is detected that there are people in some rooms and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, that is, it is very cold or very hot, suspend the supply of purified fresh air to each room. When it is very cold or very hot, follow step ② or ③;

[0036] In this way, the amount of fresh air entering each room is coordinated according to the outdoor temperature, minimizing the energy consumption while ensuring indoor health and comfort.

[0037] e. When the variable frequency purification fresh air fan 11 controlled by the Internet of Things according to the outdoor temperature does not receive the Internet of Things command, it means that the networking is unsuccessful and it works in a single room (such as a hotel room) mode:

[0038] (1) When it is detected that there is someone in the room and there is no deviation or a small deviation between the outdoor temperature and the comfortable temperature zone of 20°C to 26°C, the purified fresh air is delivered according to the user's settings when there is someone in the room, and the purified fresh air is stopped when it is detected that there is no one in the room;

[0039] ⑵. When it is detected that there is someone in the room, and the deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ exceeds the small deviation limit but is less than the very large deviation limit, the outdoor temperature table is checked and the number of people using the room is reduced according to the corresponding proportion. The lower limit of the reduction ratio is 25%, and the upper limit of the reduction ratio is 85%. When it is detected that there is no one in the room, the supply of purified fresh air is stopped;

[0040] (3) When it is detected that there is someone in the room and the outdoor temperature deviates greatly from the comfortable temperature zone of 20°C to 26°C, that is, when it is very cold or very hot, the supply of purified fresh air to the room is suspended. When the outdoor temperature deviates greatly from the comfortable temperature zone of 20°C to 26°C, the mode of step (2) is restored;

[0041] After the implementation of the present invention, the traditional ducted fresh air system is upgraded from a room-based system in which the amount of purified fresh air entering each room is set according to the volume of the house (generally the ratio is 1:1) during installation to a people-oriented system in which the Internet of Things variable frequency purification fresh air machine changes the amount of purified fresh air entering each room at any time according to the number of people and status (30 cubic meters of fresh air per person per hour in a healthy breathing living and learning state, and 15 cubic meters of fresh air per person per hour in a resting state). The opportunity amount of fresh air entering each room is reduced by more than 50%, which has already met the needs of low-energy healthy buildings relatively well. It is further upgraded to an Internet of Things ductless distributed fresh air system based on environmental parameters, based on the two core parameters of the temperature deviation of the room outdoor temperature and the comfortable temperature zone of 20°C to 26°C and whether there are people in each room, to intelligently coordinate and optimize the management of the amount of purified fresh air entering each room, minimize energy consumption under the premise of ensuring indoor health and comfort, better complete the improvement of health and comfort of the living environment of residential and hotel guest rooms, and better complete lower energy consumption of residential and hotel guest rooms.

[0042] The essence of the present invention is to intelligently coordinate and optimize the management of indoor and outdoor air circulation based on the outdoor temperature and whether there are people in each room, so as to better improve the comfort of the living environment of residential and hotel rooms and better achieve greater energy saving of low-energy consumption healthy buildings of residential and hotel rooms. The specific topological structure and parameters of the present invention should not be understood as limiting the present invention.

Claims

1. An IoT ductless distributed whole-house fresh air system based on environmental parameters, characterized by: The present invention comprises an existing residence (1), wherein the rooms of the residence (1) include a living room (2), a living room (3), a study (4), and a bathroom (5). The living room (2) is equipped with a variable frequency purification fresh air fan (9) controlled by the living room Internet of Things according to the outdoor temperature. The living room (3) is equipped with a variable frequency purification fresh air fan (8) controlled by the living room Internet of Things according to the outdoor temperature. The study (4) is equipped with a variable frequency purification fresh air fan (10) controlled by the study Internet of Things according to the outdoor temperature. The hotel guest room is equipped with a variable frequency purification fresh air fan (11) controlled by the Internet of Things according to the outdoor temperature. The bathroom is equipped with an intelligent variable frequency exhaust fan (6) controlled by the Internet of Things according to the living room Internet of Things. The variable frequency purification fresh air fan (9) controlled by outdoor temperature, the variable frequency purification fresh air fan (8) controlled by the living room Internet of Things based on outdoor temperature, and the variable frequency purification fresh air fan (10) controlled by the study Internet of Things based on outdoor temperature are all variable frequency purification fresh air fans (11) controlled by the Internet of Things based on outdoor temperature, and are automatically networked and integrated with the Internet of Things intelligent variable frequency exhaust fan (6) devices to form an Internet of Things ductless distributed fresh air system based on environmental parameters. The Internet of Things controller function and the controller of the Internet of Things intelligent variable frequency exhaust fan (6) can be integrated in the same controller or can be separately established. The variable frequency purification fresh air fan (11) controlled by the Internet of Things based on outdoor temperature The variable frequency purification fresh air fan (11) is connected to the outdoor temperature detection sensor (12), which supports detecting the outdoor air temperature sent to each room and reporting it when it changes or at a set frequency. The variable frequency purification fresh air fan (11) controlled by the Internet of Things based on the outdoor temperature is connected to the human detection sensor (13), which supports detecting whether there is someone in each room and reporting it when it changes or at a set frequency. The Internet of Things ductless distributed fresh air system based on environmental parameters intelligently coordinates and optimizes the indoor and outdoor air circulation of the whole house, that is, with the goal of health, comfort and energy saving, the amount of purified fresh air sent to each room is minimized to ensure indoor health and comfort. Energy consumption is minimized to achieve the purpose of making the whole house and hotel rooms healthier, more comfortable and more energy-efficient. The IoT intelligent variable frequency exhaust fan (6) has the ability to detect the concentration of formaldehyde, benzene, TVOC and odor in the air (indoor air terminal) to be discharged to the outside through the public exhaust duct. The IoT ductless distributed fresh air system based on environmental parameters can intelligently manage the fresh air volume of the whole house based on the detected formaldehyde, benzene, TVOC and odor concentration parameters to ensure that indoor air pollutants do not exceed the standard. The IoT variable frequency purification fresh air fan (11) controlled by the IoT based on the outdoor temperature works according to the IoT command, including the following steps: a. The frequency conversion purification fresh air fan (11) controlled by the Internet of Things according to the outdoor temperature detects the outdoor air temperature to be sent into the room through the outdoor temperature detection sensor (12), and detects whether there is anyone in the room through the human body detection sensor (13). If there is a change in the detected outdoor air temperature to be sent into the room and whether there is anyone in the room, it will be reported immediately. If there is no change, it will be reported according to the set reporting cycle; b. The variable frequency purification fresh air fan (11) controlled by the Internet of Things according to the outdoor temperature, when the outdoor air temperature to be delivered to the room has no deviation or a small deviation from the comfortable temperature zone of 20°C to 26°C and no command from the Internet of Things is received, the room with occupied people follows the setting of the user to deliver purified fresh air, and the room without occupied people stops delivering purified fresh air; c. When the variable frequency purification fresh air blower (11) controlled by the Internet of Things according to the outdoor temperature receives the Internet of Things command, it indicates that the Internet connection has been successfully established and the command of the Internet of Things is executed; d. When the control system of the IoT ductless distributed whole-house fresh air system based on environmental parameters receives information about the outdoor air temperature to be sent into the room and whether there is someone in the room reported by two or more IoT variable frequency purification fresh air fans (11) controlled based on outdoor temperature, and the deviation of the outdoor air temperature reported by at least one of them from the comfortable temperature zone of 20°C to 26°C exceeds the smaller deviation limit, the IoT command is issued: ①. When it is detected that some of the rooms are occupied and the temperature deviation between the outdoor temperature of some rooms and the comfortable temperature zone of 20℃ to 26℃ is large, but the temperature deviation between the outdoor temperature of some rooms and the comfortable temperature zone of 20℃ to 26℃ is small, the amount of purified fresh air sent to the occupied rooms with large temperature deviation is reduced, the unoccupied rooms with large temperature deviation are stopped, and the unoccupied rooms with small temperature deviation are started to be supplemented. If the amount is insufficient, the amount of purified fresh air sent to the rooms with small deviation is increased; ②. When it is detected that some of the rooms are occupied and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air to the unoccupied rooms will be started, and the purified fresh air to the occupied rooms will be reduced by the same amount to obtain a comfortable living experience; ③. When it is detected that there are people in all rooms, and the deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ exceeds the small deviation limit but is less than the very large deviation limit, the number of people using the room will be reduced according to the outdoor temperature table and the number of people using the room will be reduced according to the corresponding proportion. The lower limit of the reduction ratio is 25%, and the upper limit of the reduction ratio is 85%; ④. When it is detected that there are people in some rooms and the outdoor temperature of all rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, that is, it is very cold or very hot, suspend the supply of purified fresh air to each room. When it is very cold or very hot, follow step ② or ③; In this way, the amount of fresh air entering each room is coordinated according to the outdoor temperature, minimizing the energy consumption while ensuring indoor health and comfort. e. When the variable frequency purification fresh air fan (11) controlled by the Internet of Things according to the outdoor temperature does not receive the Internet of Things command, it means that the networking is unsuccessful and it works in a single room (such as a hotel room) mode: (1) When it is detected that there is someone in the room and there is no deviation or a small deviation between the outdoor temperature and the comfortable temperature zone of 20°C to 26°C, the purified fresh air is delivered according to the user's settings when there is someone in the room, and the purified fresh air is stopped when it is detected that there is no one in the room; ⑵. When it is detected that there is someone in the room, and the deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ exceeds the small deviation limit but is less than the very large deviation limit, the outdoor temperature table is checked and the number of people using the room is reduced according to the corresponding proportion. The lower limit of the reduction ratio is 25%, and the upper limit of the reduction ratio is 85%. When it is detected that there is no one in the room, the supply of purified fresh air is stopped; (3) When it is detected that there is someone in the room and the temperature deviation between the outdoor temperature and the comfortable temperature zone of 20℃ to 26℃ is very large, that is, when it is very cold or very hot, the supply of purified fresh air to the room is suspended. When the outdoor temperature deviates greatly from the comfortable temperature zone of 20℃ to 26℃, the second step mode is restored.

2. According to claim 1, a ductless distributed whole-house fresh air system based on environmental parameters of the Internet of Things is characterized by: The variable frequency purification fresh air machine (11) controlled by the Internet of Things according to the outdoor temperature supports networking between devices, and supports Internet of Things commands as priority execution instructions, meets the purified fresh air volume used in each room of the entire house and the hotel guest room, reports the outdoor air temperature sent to each room and whether there are people in each room, and works according to the Internet of Things command. When the outdoor temperature has no deviation or a small deviation from the comfortable temperature zone of 20°C to 26°C, the purified fresh air is sent to each room according to the setting of the user when there are people, and the purified fresh air is stopped when there is no one in the room.

3. According to claim 1, a ductless distributed whole-house fresh air system based on environmental parameters of the Internet of Things is characterized by: The outdoor temperature detection sensor (12) has a temperature detection range of not less than -50°C to +70°C, a change step of not more than 0.5°C, and leads to the air inlet of the variable frequency purification fresh air fan controlled by the Internet of Things according to the outdoor temperature.

4. According to claim 1, a ductless distributed whole-house fresh air system based on environmental parameters of the Internet of Things is characterized by: The human body detection sensor (13) is connected to each room and can effectively and automatically detect the presence of a person or a large animal in the room.

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