Method for controlling variable-frequency purification fresh air ventilator according to outdoor temperature through Internet of Things

Abstract

The invention discloses a method for controlling a variable-frequency purification fresh air ventilator through the Internet of Things according to outdoor temperature. The variable-frequency purification fresh air ventilator is additionally provided with an outdoor temperature detection sensor and a human body detection sensor. 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, the number is reduced by more than 50%, and on the basis that the requirements of low-energy-consumption healthy buildings are well met, the energy-saving and environment-friendly effects are achieved. Furthermore, indoor and outdoor air circulation is intelligently, comprehensively and optimally managed according to the outdoor temperature and whether people exist in the room or not. In other words, on the traditional basis that a room is used as a home and people are upgraded, intelligent optimization management based on two core parameters, namely outdoor temperature and whether a person is in the room, is further upgraded to be intelligent optimization management based on the two core parameters, namely, the outdoor temperature and whether the person is in the room. The comfort level of the living environment of the residence and the hotel guest room is better improved, and the energy of the low-energy-consumption healthy building of the residence and the hotel guest room is better saved.

Description

Technical Field

[0001] The present invention discloses a method for purifying a fresh air fan with variable frequency, and in particular discloses a method for purifying a fresh air fan with variable frequency controlled by the Internet of Things according to outdoor temperature. Background Art

[0002] The variable frequency purification fresh air machine used in all rooms of the house and hotel guest rooms (hereinafter referred to as rooms) 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 into the room at any time. Although it has made great progress compared with the ducted fresh air system that cannot adjust the purified fresh air volume sent into the room at any time, the traditional ducted fresh air system has been upgraded from the room-based installation of the new air volume according to the volume of the house to the variable frequency purification fresh air machine that changes the fresh air volume according to the number of people at any time. The purified fresh air volume sent into the room has dropped by more than 50% (for example, a house with a living area of ​​70 square meters for a family of three has a volume of about 182 cubic meters, that is, the purified fresh air volume per hour is about 182 cubic meters, and the family of three purifies 90 cubic meters of fresh air per hour during the day and 45 cubic meters of fresh air per hour at night), 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, the temperature of the purified fresh air entering the room is unknown, that is, the outdoor temperature is unknown, so energy-saving optimization of the amount of purified fresh air delivered to the room cannot be achieved; on the other hand, it is unknown whether there is anyone in the room, that is, it is unknown whether purified fresh air should be delivered to the 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 into the room to minimize the amount of air with a large temperature difference, so as to maintain the indoor temperature in the comfort zone and consume less energy; the result of not knowing whether there is someone in the room is that it is impossible to decide the operation and suspension of the variable frequency purification fresh air fan according to whether there is someone in the room, so that purified fresh air is still sent into the room when no one is needed. On the one hand, purification requires energy consumption, and on the other hand, useless purified fresh air will also cause heat or cold loss in the room, which means increased energy consumption; if the outdoor temperature is not known, it is impossible to support the integration of the Internet of Things ductless distributed whole-house purification fresh air, coordinate the amount of fresh air sent into the room between different rooms 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 a method for controlling a variable frequency purification fresh air fan of the Internet of Things according to the outdoor temperature. The variable frequency purification fresh air fan of the Internet of Things that meets the healthy breathing needs of people in Chinese family bedrooms, study rooms, and hotel guest rooms is added with an outdoor temperature detection sensor and a human body detection sensor. On the one hand, the temperature of the purified fresh air entering the room is detected in real time, that is, the outdoor temperature is detected, and the energy-saving optimization of the purified fresh air volume sent into the room is achieved based on this parameter, so as to keep the indoor temperature in the comfort zone and consume less energy; on the other hand, it detects whether there is someone in the room, and determines the operation and suspension of the variable frequency purification fresh air fan according to whether there is someone in the room. When it is detected that there is no one in the room, the purified fresh air is stopped from being sent in, which not only avoids the energy consumption of purifying the air, but also avoids the useless purified fresh air from causing the loss of heat or cold in the room, that is, avoids ineffective energy consumption. Of course, when it is detected that there is no one in the 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 is someone in the room, according to the instructions of the user, while ensuring the healthy breathing of people in the room in the living and learning state, 30 cubic meters of fresh air volume per person hour, and 15 cubic meters of fresh air volume per person hour in the rest state, it supports reasonable adjustment of the purified fresh air volume delivered to the 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 is someone in the 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 integrated into the IoT ductless distributed whole-house purified fresh air system, 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 is stopped in the unoccupied rooms; 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 smaller deviation is increased (started in the unoccupied rooms), and the amount of purified fresh air delivered to the rooms with larger deviation is reduced. When it is detected that some of the rooms are occupied and the outdoor temperature of all the rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air supplied to the occupied rooms will be suspended, and the purified fresh air supplied to the unoccupied rooms will be started to obtain a comfortable living experience; when it is detected that some of the rooms are occupied and the outdoor temperature of all the rooms deviates greatly from the comfortable temperature zone of 20℃ to 26℃, that is, it is very cold or very hot, the purified fresh air supplied to each room will be suspended, and the air supply to the unoccupied rooms will be resumed when the negative deviation of the outdoor temperature of the room and the comfortable temperature zone of 20℃ to 26℃ is large. In this way, the amount of fresh air supplied to different rooms 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 daytime with sunlight is closer to the comfortable temperature zone than the air temperature at night without sunlight; in summer, the air temperature at night without sunlight is closer to the comfortable temperature zone than the air temperature during the daytime with sunlight. From the traditional ducted fresh air system, which sets the fresh air volume according to the volume of the house during installation, to the variable frequency purification fresh air machine, which changes the indoor and outdoor air ventilation volume according to the number of people and status at any time, it has been better to meet the needs of low-energy healthy buildings. It has been 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 the 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 method of controlling a variable frequency purification fresh air fan according to the outdoor temperature of the Internet of Things is provided. The variable frequency purification fresh air fan of the Internet of Things is added with an outdoor temperature detection sensor and a human body detection sensor. According to the outdoor air temperature (outdoor temperature) to be sent into the room detected by the outdoor temperature detection sensor and whether there is someone in the room detected by the human body detection sensor, the indoor and outdoor air circulation is intelligently coordinated and optimized to achieve the comfortable and energy-saving optimization of the purified fresh air volume sent into each room of the residential and hotel guest rooms, so as to achieve the purpose of more comfort and more energy saving.

[0006] The present invention is achieved in that:

[0007] A method for controlling a variable frequency purification fresh air fan according to outdoor temperature by an Internet of Things, comprising an Internet of Things variable frequency purification fresh air fan, the Internet of Things variable frequency purification fresh air fan being connected to an outdoor temperature detection sensor, supporting detection of the outdoor air temperature to be sent into a room by the outdoor temperature detection sensor, the Internet of Things variable frequency purification fresh air fan being connected to a human body detection sensor, supporting detection of whether there is someone in the room by the human body detection sensor, the Internet of Things variable frequency purification fresh air fan supporting networking between devices, reporting the detected outdoor air temperature to be sent into the room and whether there is someone in the room, and working according to an Internet of Things command, comprising the following steps:

[0008] a. Detect the outdoor air temperature to be sent into the room through the outdoor temperature detection sensor, detect whether there is anyone in the room through the human body detection sensor, and report the detected outdoor air temperature to be sent into the room and whether there is anyone in the room;

[0009] b. When the outdoor air temperature to be delivered into the room has no deviation or a small deviation from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air will be delivered into the occupied rooms according to the user's settings, and the purified fresh air will be stopped from being delivered into the unoccupied rooms.

[0010] c. When the IoT frequency conversion purification fresh air machine receives the IoT command, it means that the network has been successfully connected and it will be executed according to the network command;

[0011] d. When the IoT frequency conversion purification fresh air fan does not receive the IoT command, it means that the networking is unsuccessful and it works in a single room (such as a hotel room) mode:

[0012] ⑴. 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℃ to 26℃, the purified fresh air will be sent in according to the user's settings when there is someone in the room, and the purified fresh air will be stopped when it is detected that there is no one in the room;

[0013] 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℃ is greater than the upper limit of the small deviation and less than the lower limit of the very large deviation, the outdoor temperature table is checked and the number of users is reduced according to the corresponding proportion to send in purified fresh air. 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;

[0014] ⑶. 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 into 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.

[0015] The Internet of Things variable frequency purification fresh air fan supports wireless networking between devices, and supports Internet of Things commands as priority execution instructions, to meet the purified fresh air volume used in all rooms of the house and hotel rooms, that is, it should be able to meet the living and learning needs of two adults and an infant.

[0016] The outdoor temperature detection sensor has a temperature detection range of not less than -50°C to +60°C, a change step of not more than 0.5°C, and leads to the air inlet duct of the Internet of Things variable frequency purification fresh air fan.

[0017] The human body detection sensor is connected to the room and can effectively and automatically detect the presence of a person or a large animal in the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of topological structure block diagram of the present invention

[0019] 1 Internet of Things variable frequency purification fresh air fan, 2 outdoor temperature detection sensor, 3 human body detection sensor. DETAILED DESCRIPTION

[0020] like Figure 1 The topological structure block diagram shown in the figure, the present invention is implemented as follows:

[0021] A method for controlling a variable frequency purification fresh air fan according to outdoor temperature by the Internet of Things, comprising an Internet of Things variable frequency purification fresh air fan 1, the Internet of Things variable frequency purification fresh air fan 1 connected to an outdoor temperature detection sensor 2, the temperature detection range of the outdoor temperature detection sensor 2 is not less than -50°C to +60°C, the change step is not greater than 0.5°C, the air inlet duct leading to the Internet of Things variable frequency purification fresh air fan 1, the Internet of Things variable frequency purification fresh air fan 1 connected to a human detection sensor 3, after the Internet of Things variable frequency purification fresh air fan 1 is installed, the human detection sensor 3 leads to the room. Supporting the outdoor air temperature to be sent into the room detected by the outdoor temperature detection sensor 2 and whether there is someone in the room detected by the human detection sensor 3, the Internet of Things variable frequency purification fresh air fan 1 supports networking between devices, and supports Internet of Things commands as priority commands, meeting the purification fresh air volume used in all rooms of the house and hotel rooms, that is, it should be able to meet the living and learning use of two adults and infants, reporting the outdoor air temperature of the room and whether there is someone in the room, and working according to the Internet of Things command, including the following steps:

[0022] a. Detect the outdoor air temperature to be sent into the room through the outdoor temperature detection sensor, detect whether there is anyone in the room through the human body detection sensor, and report the detected outdoor air temperature to be sent into the room and whether there is anyone in the room;

[0023] b. When the outdoor air temperature to be delivered into the room has no deviation or a small deviation from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air will be delivered into the occupied rooms according to the user's settings, and the purified fresh air will be stopped from being delivered into the unoccupied rooms.

[0024] c. When the IoT frequency conversion purification fresh air machine 1 receives the IoT command, it indicates that the network has been successfully connected and the network command is executed;

[0025] d. When the Internet of Things frequency conversion purification fresh air fan 1 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:

[0026] ⑴. 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℃ to 26℃, the purified fresh air will be sent in according to the user's settings when there is someone in the room, and the purified fresh air will be stopped when it is detected that there is no one in the room;

[0027] 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℃ is greater than the upper limit of the small deviation and less than the lower limit of the very large deviation, the outdoor temperature table is checked and the number of users is reduced according to the corresponding proportion to send in purified fresh air. 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;

[0028] ⑶. When it is detected that there is someone in the room and the outdoor temperature deviates greatly from the comfortable temperature zone of 20℃ to 26℃, that is, when it is very cold or very hot, the purified fresh air supplied to the room is suspended. When the outdoor temperature deviates greatly from the comfortable temperature zone of 20℃ to 26℃, the mode of step ⑵ is restored;

[0029] When it is detected that there is no one in the room, the supply of purified fresh air will be stopped; when it is detected that there is someone in the room, the amount of fresh air supplied to each room will be determined based on the outdoor temperature, so as to minimize the energy consumption while ensuring the indoor health and comfort, so as to make the whole house and hotel rooms more comfortable and energy-saving.

[0030] After the implementation of the present invention, the traditional ducted fresh air system that delivers purified fresh air into the room according to the volume of the house is upgraded to a people-oriented system where the frequency conversion purification fresh air machine changes the amount of purified fresh air delivered to the room at any time according to the number of people and status. The amount of purified fresh air delivered to the room is reduced by more than 50% (for example, a house with a living area of ​​70 square meters for a family of three has a volume of about 182 cubic meters, that is, the volume of purified fresh air per hour is about 182 cubic meters, and the family of three has 90 cubic meters of purified fresh air per hour during the day and 45 cubic meters of purified fresh air per hour at night). On the basis of meeting the needs of low-energy and healthy buildings relatively well, the present invention has been further upgraded to intelligently and comprehensively optimize the management of the amount of purified fresh air delivered to each room based on the outdoor temperature and whether there is someone in the room, so as to better improve the comfort of the living environment of residential and hotel guest rooms and better achieve greater energy saving of low-energy and healthy buildings of residential and hotel guest rooms.

[0031] As we all know, the purified fresh air and exhaust air delivered into the room together constitute the indoor and outdoor air circulation, and the general ratio is 1 to 1. That is, the indoor and outdoor air circulation management has been upgraded from the traditional room-oriented to people-oriented, and further upgraded to intelligent management based on the two core parameters of outdoor temperature and whether there is someone in the 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 and healthy buildings in residential and hotel rooms.

[0032] The essence of the present invention is to intelligently coordinate and optimize the indoor and outdoor air circulation of each room according to the outdoor temperature and whether there is someone in the 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. A method for controlling a variable frequency fresh air blower based on outdoor temperature in the Internet of Things, characterized in that: The invention comprises an Internet of Things variable frequency purification fresh air machine (1), the Internet of Things variable frequency purification fresh air machine (1) is connected to an outdoor temperature detection sensor (2), and supports detecting the outdoor air temperature to be sent into the room through the outdoor temperature detection sensor (2), the Internet of Things variable frequency purification fresh air machine (1) is connected to a human body detection sensor (3), and supports detecting whether there is someone in the room through the human body detection sensor (3), the Internet of Things variable frequency purification fresh air machine (3) supports wireless networking between devices, reports the detected outdoor air temperature to be sent into the room and whether there is someone in the room, and works according to the Internet of Things command, and comprises the following steps: a. Detecting the temperature of outdoor air to be delivered to the room through the outdoor temperature detection sensor (2), detecting whether there is anyone in the room through the human body detection sensor (3), and reporting the detected temperature of outdoor air to be delivered to the room and whether there is anyone in the room; b. When the outdoor air temperature to be delivered into the room has no deviation or a small deviation from the comfortable temperature zone of 20℃ to 26℃, the purified fresh air will be delivered into the occupied rooms according to the user's settings, and the purified fresh air will be stopped from being delivered into the unoccupied rooms. c. When the Internet of Things variable frequency purification fresh air machine (1) receives the Internet of Things command, it indicates that the Internet connection has been successfully completed and the Internet connection command is executed; d. When the Internet of Things variable frequency purification fresh air fan (1) 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: ⑴. 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℃ to 26℃, the purified fresh air will be sent in according to the user's settings when there is someone in the room, and the purified fresh air will be 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℃ is greater than the upper limit of the small deviation and less than the lower limit of the very large deviation, the outdoor temperature table is checked and the number of users is reduced according to the corresponding proportion to send in purified fresh air. 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; ⑶. 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, stop supplying purified fresh air to the room. When the outdoor temperature deviates greatly from the comfortable temperature zone of 20℃ to 26℃, resume the step ⑵ mode.

2. According to claim 1, a method for controlling a variable frequency purification fresh air fan according to outdoor temperature in the Internet of Things is characterized in that: The Internet of Things variable frequency purification fresh air machine (3) supports wireless networking between devices and supports Internet of Things commands as priority execution instructions, meeting the purification fresh air volume used in all rooms of a house and hotel guest rooms, that is, it should be able to meet the living and learning needs of two adults and an infant.

3. The method of controlling a variable frequency purification fresh air fan according to outdoor temperature in the Internet of Things according to claim 1 is characterized in that: The outdoor temperature detection sensor (2) has a temperature detection range of not less than -50°C to +60°C, a change step of not more than 0.5°C, and leads to the air inlet duct of the Internet of Things variable frequency purification fresh air fan (1).

4. The method of controlling a variable frequency purification fresh air fan according to outdoor temperature in the Internet of Things according to claim 1 is characterized in that: The human body detection sensor (3) is connected to the room and can effectively and automatically detect the presence of a person or a large animal in the room.

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