A hot air supply system and a control method based on the hot air supply system

Abstract

The present invention provides a heated air supply system and a control method based on the heated air supply system, wherein the system includes an induced draft duct assembly vertically installed at a corner of an indoor wall, one end of the induced draft duct assembly is connected to an air conditioner indoor unit, and the other end is connected to the indoor room; two planes of the induced draft duct assembly along the vertical direction are respectively parallel to two indoor walls at the indoor corner where it is installed; the wind blown out by the induced draft duct assembly forms at least two wall-type air supply air flows along the indoor corner, and then hits the indoor floor to form a hot air lake, which is simultaneously diffused to the entire indoor space; the outlet of the induced draft duct assembly is 1.1-3m away from the indoor floor. The present invention solves the problem in the above-mentioned prior art that the upper air supply method is difficult to deliver hot air to the personnel space. It can directly deliver hot air to the lower part of the room with low loss and effectively suppress the rise of hot air flow, ensuring a good extension and diffusion effect of the hot air flow in the horizontal direction.

Description

Technical Field

[0001] The present invention relates to the field of heating and ventilation, and in particular to a heating air supply system and a control method based on the heating air supply system, and is particularly suitable for residential and office building spaces. Background Art

[0002] Using heating units for winter heating requires good airflow organization. Airflow organization is a crucial factor influencing a building's indoor ventilation and air conditioning effectiveness, determining the distribution of fresh air delivered, heat and cold, humidity, and indoor pollutant concentrations. Proper airflow organization should effectively improve indoor air quality, create a comfortable heat and humidity environment, and eliminate drafts while minimizing energy consumption.

[0003] There are two modes of airflow organization: traditional mixing ventilation based on the dilution principle (such as Figure 1 ); modern displacement ventilation powered by buoyancy control (e.g. Figure 2 ).

[0004] Traditional mixed ventilation air conditioners based on the dilution principle suffer from a widespread problem of large vertical temperature gradients in winter, resulting in excessively high head temperatures and cold feet. Furthermore, mixed ventilation workspaces are typically located in return or exhaust air environments, resulting in relatively poor sanitation. Finally, improper airflow organization leads to poor ventilation efficiency, reduced energy utilization, and a negative impact on energy conservation.

[0005] When displacement ventilation is used for hot air supply conditions, because the system air supply speed is relatively low (0.1~0.3m / s), when the supply air temperature is higher than the ambient air temperature, the air flow will rise evenly in the active area and will not diffuse. Therefore, it can be concluded that displacement ventilation can only be effectively applied when the supply air temperature is lower than the indoor air temperature. Summary of the Invention

[0006] The present invention aims to provide a heated air supply system and a control method based on the heated air supply system, addressing the aforementioned problem in the prior art of upper air supply, which makes it difficult to deliver heated air to the occupied area. This system can deliver heated air directly to the lower part of the room with low loss, effectively suppressing the upward flow of hot air, and ensuring good horizontal extension and diffusion of the hot air. Furthermore, the air conditioner indoor unit, installed in a corner, does not occupy the central space of the room. Furthermore, the corner can be integrated to beautify the air duct, making the air conditioner indoor unit a concealed unit, enhancing its aesthetics.

[0007] To achieve the above-mentioned objectives, the present invention provides a heating air supply system, comprising: an induced draft duct assembly vertically installed at a corner of an indoor wall, one end of the induced draft duct assembly being connected to an air-conditioning indoor unit, and the other end being connected to the indoor room; two planes of the induced draft duct assembly along the vertical direction are respectively parallel to two indoor walls at the indoor corner where it is installed; the wind blown out by the induced draft duct assembly forms at least two wall-type air supply airflows along the indoor corner, and then touches the indoor floor to form a hot air lake, and at the same time diffuses to the entire indoor space; the outlet of the induced draft duct assembly is 1.1-3m away from the indoor floor.

[0008] In the working state, the air flow sent by the air conditioner indoor unit is sent out through the induced draft duct assembly and forms two wall-type air supply air flows along the adjacent indoor walls. The wall-type air supply air flows diffuse after hitting the indoor floor to form a hot air lake.

[0009] Compared with the existing air-conditioning indoor unit, the hot air supplied in winter is directly blown by the hot air, causing problems such as drying of the nasal mucosa and cavity mucosa of the people; and the hot air is blown out and directly rises to the upper part of the room, causing the temperature difference problem of the entire space, that is, the huge vertical temperature difference between the feet and the head and feet; through the added air duct assembly, the hot air generated by the air-conditioning indoor unit is drained and sprayed to the indoor floor, and at the same time the hot air diffuses along the indoor floor and rises to the upper part of the indoor space, so that the temperature difference of the entire space is relatively small, and people are in a more comfortable environment; the hot air air lake further diffused on the indoor floor ensures the comfort of the user, who is away from the air-conditioning indoor unit and enjoys a good indoor environment at the same time.

[0010] The air conditioner indoor unit installed in the corner does not need to occupy the usable space in the middle of the room. At the same time, it can be combined with the corner to beautify the air duct, making the air conditioner unit a hidden unit to increase the aesthetics.

[0011] In addition, this solution uses an induced draft duct assembly (reducing costs), which, combined with the distance setting from the indoor ground (1.1-3m), can form a good hot air lake, reduce the air supply height, strengthen the suppression of hot air rise, and do not take up too much room space.

[0012] The indoor wall corner is formed by two adjacent indoor walls, and the two wall-type air supply air flows are formed on the surfaces of the two adjacent indoor walls.

[0013] This solution provides a specific structure of indoor wall corners, which is the same or similar to the wall corners in the prior art, wherein the adjacent indoor walls constitute the "wall" plane of the wall-type air supply airflow, so that the airflow is delivered to the indoor floor, and the airflow is relatively stable.

[0014] In a preferred embodiment of the present invention, the shadowed portion of the air duct assembly in the lateral direction is located on two adjacent indoor walls at the same time.

[0015] This solution provides a specific installation position of the induced draft duct assembly, that is, a portion of the induced draft duct assembly is located within the area of an indoor wall, and another portion of the induced draft duct assembly is located within the area of an adjacent indoor wall.

[0016] In a preferred embodiment of the present invention, the cross-section of the air duct assembly is fan-shaped.

[0017] The cross-section of the air outlet of the duct assembly is a quarter circle. Compared with rectangular and linear air outlets, the circular nozzle has a slower velocity decay, further reducing the decay of the air jet velocity and suppressing the rise of thermal air.

[0018] The cross-section of the induced draft duct assembly is fan-shaped. The above solution provides the specific assembly position and relationship of the induced draft duct assembly. Since the induced draft duct assembly fills the entire indoor space with hot air generated by the air conditioner indoor unit, and since the entire air conditioner indoor unit is located in a corner, the fan-shaped design matches the existing corner and fully utilizes the space.

[0019] In addition, there is no obstruction around the air duct assembly, which makes it easy to assemble, and there is no obstruction during use, which better guides the air flow movement.

[0020] In a preferred embodiment of the present invention, the draft duct assembly adopts a corrugated hose, and the corrugated hose is a retractable structure to adjust the distance between the outlet of the draft duct assembly and the indoor floor.

[0021] The retractable structure can adjust the distance between the outlet of the corrugated hose and the indoor floor according to actual needs, because under different space conditions and different wind speed adjustments, if you want to achieve better hot air diffusion efficiency, using a suitable distance is more critical.

[0022] The hot air attachment distance of the air lake area is adjusted by adjusting the height of the air outlet from the ground. The relationship between the hot air attachment distance x of the air lake area and the height h of the air outlet is: x = 10.9-2.1*h, h∈[1.1,2.4](R 2 =0.99, where R 2 is the coefficient of determination, which is a statistic to measure the goodness of fit, R 2 The closer the value is to 1, the better the curve fitting is.)

[0023] In a preferred embodiment of the present invention, a monitoring system is provided in the indoor unit of the air conditioner, the monitoring system including a human body recognition sensor, a controller communicating with the human body recognition sensor, and an actuator that receives instructions from the controller, the actuator being used to control the height h of the outlet of the corrugated hose from the indoor floor.

[0024] In a preferred embodiment of the present invention, the actuator includes a stepper motor and a rotating bearing axially connected to the stepper motor shaft, and the rotating bearing is fixedly connected to the corrugated hose; the stepper motor operates according to the instructions of the driver.

[0025] The above technical solution provides the structure of a complete monitoring system, improving the automation function of the entire product.

[0026] A control method for a hot air supply system adopting the above solution, characterized by including:

[0027] Obtain the distance between the current user and the air outlet of the air conditioner indoor unit, and set it as L;

[0028] Obtain the activity time of the current user in the activity area, and set it as t;

[0029] Send the above distance L and time t values to the controller, and the controller dynamically adjusts the height h of the outlet of the air duct assembly from the indoor ground according to the obtained values.

[0030] In a preferred embodiment of the present invention, an adjustment model between the distance L and the height h is established, and the adjustment model is h = (10.9 - L) / 2.1.

[0031] This adjustment model is obtained based on numerical simulation. The air lake hot air attachment distance x at different air supply heights h is simulated, and the relational expression between x and h is fitted in the origin software as x = 10.9 - 2.1*h. In the actual use logic, the distance L between the user and the air outlet of the air conditioner is the value x that the hot air attachment needs to reach. Therefore, the air supply height h that the air outlet of the air conditioner needs to meet is deduced from L. Then the relationship between L and h is the same as the relationship between x and h. Replace x in the formula with L, and the relational expression between the distance L between the current user and the air outlet of the air conditioner indoor unit and the air supply height h that needs to be controlled is deduced as h = (10.9 - L) / 2.1.

[0032] In a preferred embodiment of the present invention, when t > t1, the current distance L is fed back to the controller, denoted as x0, and the h value that triggered the previous adjustment action is denoted as x1. When x0 < x1, the air duct assembly rotates upward; when x0 > x1, the air duct assembly rotates downward and translates; when x0 = x1, the air duct assembly remains stationary; when t ≤ t1, the h value is not fed back to the controller.

[0033] Further, the value of t1 is 3 min < t1 < 5 min. Among them, t1 can be 3 min, or 3.5 min, 4 min, 5 min, etc., which are specifically set according to actual requirements; the purpose of setting this time is to adjust the height of the outlet of the air duct assembly from the indoor ground with the controller at any time within a certain time, and better realize the optimal utilization of energy.

[0034] During the specific working process, the human body recognition sensor 4 senses the position x of the human body from the air outlet and the time t since the last movement of the human body, and feeds x back to the controller (single-chip microcomputer) 5. The built-in program of the controller is h = (10.9 - x) / 2.1, and the obtained h value is fed back to the driver. The driver 6 controls the stepping motor 7 to rotate the bearing 8. The rotation of the bearing 8 drives the height of the corrugated hose 9. The corrugated hose 9 is rotated to adjust the height of the air outlet from the ground to h, thus meeting the requirement of the attachment distance of x.

[0035] Specifically, the height of the corrugated hose 9 from the ground in the natural vertical state is 1.2m.

[0036] When t > t1, the current x is fed back to the controller 5 and denoted as x0. The x value that triggered the last adjustment action is denoted as x1.

[0037] When x0 < x1, the bearing 8 rotates to the left. When x0 > x1, the bearing 8 rotates to the right. When x0 = x1, the bearing 8 remains stationary. The movement of the above bearing 9 drives the movement of the air duct assembly.

[0038] When t < t1, the x value is not fed back to the controller 5.

[0039] The value of t1 is 3min < t1 < 5min.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] Compared with the traditional top side air supply, the present invention is beneficial to suppressing the rise of hot air flow, sending the hot air of the winter air conditioner to the working area (the area where the user is located) to the greatest extent, having a larger attachment length, solving the problems that it is difficult to send the hot air to the feet in winter and the huge vertical temperature difference between the head and feet, while ensuring the freshness, oxygen content and cleanliness of the air in the working area, being beneficial to the health of personnel, and avoiding problems such as the drying of the nasal mucosa and cavity mucosa of personnel caused by direct blowing of hot air.

[0042] In addition, the present invention meets the energy-saving requirements of the air conditioning air supply system, forms a hot air pool with a relatively wide coverage area, ensures the freshness and comfort of the air in all working areas while reducing the energy consumption of the air conditioner; at the same time, because the indoor unit is placed in the corner, the use space in the middle of the room is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is the first air flow diffusion method of the present prior art;

[0044] Figure 2 It is the second air flow diffusion method of the present prior art;

[0045] Figure 3 Figure A is the first schematic diagram of effectively suppressing the rise of hot air flow of the present invention; Figure 3 B is a second schematic diagram of the present invention for effectively suppressing the rise of thermal airflow. Figure 3 C is a third schematic diagram of the present invention for effectively suppressing the rise of thermal airflow;

[0046] Figure 4 It is a schematic diagram of the assembly of the system of the present invention;

[0047] Figure 5 It is a working state diagram of the system of the present invention;

[0048] Figure 6 A schematic diagram of various parameters of the system of the present invention;

[0049] Figure 7 This is a specific assembly structure diagram of the indoor air conditioner of the present invention;

[0050] Figure 8 The working state of the indoor air conditioner of the present invention Figure 1 ;

[0051] Figure 9 The working state of the indoor air conditioner of the present invention Figure 2 ;

[0052] Figure 10 is the relationship between the attachment distance x and the height h of the present invention;

[0053] Figure 11 is the relationship between the attachment distance x and the height h under a specific embodiment of the present invention;

[0054] Figure 12 This is a temperature simulation cloud map under the environment of Example 4 of the present invention;

[0055] Figure 13 This is a temperature simulation cloud diagram in Example 4 of the present invention (no wall-type air supply airflow is formed);

[0056] Figure 14 This is a temperature simulation cloud map under the environment of Example 5 of the present invention;

[0057] Figure 15 This is a temperature simulation cloud map under the environment of Example 6 of the present invention;

[0058] Figure 16 This is a temperature simulation cloud map under the environment of Example 7 of the present invention;

[0059] Figure 17 This is a temperature simulation cloud map under the environment of Example 8 of the present invention;

[0060] Figure 18 This is a temperature simulation cloud map under the environment of Example 9 of the present invention;

[0061] Figure 19 This is a temperature simulation cloud map under the environment of Example 10 of the present invention. DETAILED DESCRIPTION

[0062] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0063] A heating air supply system comprises: an induced draft duct assembly vertically installed at a corner of an indoor wall, one end of the induced draft duct assembly being connected to an indoor unit of an air conditioner, and the other end being connected to the indoor room; two planes of the induced draft duct assembly in the vertical direction are respectively parallel to two indoor walls at the indoor corner where the induced draft duct assembly is installed; the wind blown out by the induced draft duct assembly forms at least two wall-type air supply air flows along the indoor corner, and then hits the indoor floor to form a hot air lake, which is simultaneously diffused to the entire indoor space; the outlet of the induced draft duct assembly is 1.1-3m away from the indoor floor.

[0064] In the working state, the air flow sent by the air conditioner indoor unit is sent out through the induced draft duct assembly and forms two wall-type air supply air flows along the adjacent indoor walls. The wall-type air supply air flows diffuse after hitting the indoor floor to form a hot air lake.

[0065] Compared with the existing air-conditioning indoor unit, the hot air supplied in winter is directly blown by the hot air, causing problems such as drying of the nasal mucosa and cavity mucosa of the people; and the hot air is blown out and directly rises to the upper part of the room, causing the temperature difference problem of the entire space, that is, the huge vertical temperature difference between the feet and the head and feet; through the added air duct assembly, the hot air generated by the air-conditioning indoor unit is drained and sprayed to the indoor floor, and at the same time the hot air diffuses along the indoor floor and rises to the upper part of the indoor space, so that the temperature difference of the entire space is relatively small, and people are in a more comfortable environment; the hot air air lake further diffused on the indoor floor ensures the comfort of the user, who is away from the air-conditioning indoor unit and enjoys a good indoor environment at the same time.

[0066] The air conditioner indoor unit installed in the corner does not need to occupy the usable space in the middle of the room. At the same time, it can be combined with the corner to beautify the air duct, making the air conditioner unit a hidden unit to increase the aesthetics.

[0067] In addition, this solution uses an induced draft duct assembly (reducing costs), which, combined with the distance setting from the indoor ground (1.1-3m), can form a good hot air lake, reduce the air supply height, strengthen the suppression of hot air rise, and do not take up too much room space.

[0068] like Figure 3 A, Figure 3 B and Figure 3 As shown in C, since the velocity of the air supply jet is high and the static pressure is low near the side wall, while the static pressure is high away from the side wall, the air supply jet bends toward the side wall under the action of the pressure difference and sticks to the wall (see the figure below). Compared with mixed ventilation, the amount of indoor air sucked by the air supply flow at this time is less than that during mixed ventilation. Therefore, the speed decay of the air supply flow slows down, and the resistance to the thermal buoyancy of the hot air is stronger. In the present invention, further, an air supply duct is added to reduce the air supply height, further reducing the amount of air supply jet suction. At the same time, the circular nozzle has a slower speed decay than the rectangular and linear air supply outlets, further slowing down the speed decay of the air supply jet and suppressing the rise of the hot air flow.

[0069] Example 1:

[0070] Reference Figure 4 and Figure 5 The invention discloses a heating air supply system, comprising: an air-conditioning indoor unit 3 installed at a corner of a room wall, the return air outlet of the air-conditioning indoor unit 3 being connected to the indoor space, the air outlet 1 of the air-conditioning indoor unit being installed and connected to an air duct assembly 2, the extension line of the outlet of the air duct assembly being perpendicular to the indoor floor; the air blown out by the air duct assembly forming at least two wall-type air supply airflows along the indoor corner.

[0071] In the working state, the air flow sent by the air conditioner indoor unit is sent out through the induced draft duct assembly and forms two wall-type air supply air flows along the adjacent indoor walls. The wall-type air supply air flows diffuse after hitting the indoor floor to form a hot air lake.

[0072] Compared with the existing air-conditioning indoor unit, the hot air supplied in winter is directly blown by the hot air, causing problems such as drying of the nasal mucosa and cavity mucosa of the people; and the hot air is blown out and directly rises to the upper part of the room, causing the temperature difference problem of the entire space, that is, the huge vertical temperature difference between the feet and the head and feet; through the added air duct assembly, the hot air generated by the air-conditioning indoor unit is drained and sprayed to the indoor floor, and at the same time the hot air diffuses along the indoor floor and rises to the upper part of the indoor space, so that the temperature difference of the entire space is relatively small, and people are in a more comfortable environment; the hot air air lake further diffused on the indoor floor ensures the comfort of the user, who is away from the air-conditioning indoor unit and enjoys a good indoor environment at the same time.

[0073] The air conditioner indoor unit installed in the corner does not need to occupy the usable space in the middle of the room. At the same time, it can be combined with the corner to beautify the air duct, making the air conditioner unit a hidden unit to increase the aesthetics.

[0074] In summary, the presence of the induced draft duct assembly reduces the air supply height and strengthens the suppression of rising hot air flows without taking up too much room space.

[0075] After the air jet adheres to the wall, the airflow continues to flow downward along the wall and extends to the ground. The adverse pressure gradient increases, and the main body of the jet separates from the vertical wall. After hitting the ground, it extends forward along the floor in a radial flow manner to form an "air lake area". (See below Figure 6 )

[0076] Furthermore, the indoor wall corner is formed by two adjacent indoor walls, and the two wall-type air supply air flows are formed on the surfaces of the two adjacent indoor walls.

[0077] This solution provides a specific structure of indoor wall corners, which is the same or similar to the wall corners in the prior art, wherein the adjacent indoor walls constitute the "wall" plane of the wall-type air supply airflow, so that the airflow is delivered to the indoor floor, and the airflow is relatively stable.

[0078] Furthermore, in the lateral direction, the shadow portion of the air duct assembly 2 is located on two adjacent indoor walls at the same time.

[0079] This solution provides a specific installation position of the induced draft duct assembly 2, that is, a portion of the induced draft duct assembly 2 is located in the area of an indoor wall, and another portion of the induced draft duct assembly is located in the area of an adjacent indoor wall.

[0080] The cross-section of the induced draft duct assembly 2 is fan-shaped. The above scheme provides the specific assembly position and relationship of the induced draft duct assembly. Since the induced draft duct assembly fills the entire indoor space with hot air generated by the air conditioner indoor unit, and since the entire air conditioner indoor unit is located in a corner, the fan-shaped design matches the existing corner and fully utilizes the space.

[0081] In addition, there is no obstruction around the air duct assembly, which makes it easy to assemble, and there is no obstruction during use, which better guides the air flow movement.

[0082] Example 2:

[0083] As the principle scheme of the hot air supply system described in Example 1, this embodiment provides a specific structure.

[0084] Reference Figure 7 As shown, the induced draft duct assembly 2 adopts a corrugated hose 9, and the corrugated hose 9 is a retractable structure, and the outlet of the induced draft duct assembly is adjusted to be 1.1-3 meters away from the indoor ground.

[0085] The retractable structure can adjust the distance between the outlet of the corrugated hose and the indoor floor according to actual needs, because under different space conditions and different wind speed adjustments, if you want to achieve better hot air diffusion efficiency, using a suitable distance is more critical.

[0086] Reference Figure 10As shown, the hot air attachment distance of the air lake area is adjusted by adjusting the height of the air outlet from the ground. The relationship between the hot air attachment distance x of the air lake area and the height h of the air outlet is: x = 10.9-2.1*h, h∈[1.1,2.4](R 2 =0.99, where R 2 is the coefficient of determination, which is a statistic to measure the goodness of fit, R 2 The closer the value is to 1, the better the curve fitting is.)

[0087] Specifically, the preferred height of the corrugated hose from the ground in a natural vertical state is 1.2 m (e.g. Figure 11 ). This distance can achieve the greatest effect.

[0088] Example 3:

[0089] In combination with the solutions of Example 1 and Example 2, this embodiment provides a specific intelligent implementation solution.

[0090] Reference Figure 7 As shown, a monitoring system is set up in the indoor unit of the air conditioner, which includes a human body recognition sensor 4, a controller 5 that is communicatively connected to the human body recognition sensor, and an actuator that receives instructions from the controller 5. The actuator is used to control the height h of the outlet of the corrugated hose from the indoor ground.

[0091] The actuator 6 includes a stepper motor 7 and a rotating bearing 8 axially connected to the stepper motor 7 . The rotating bearing 8 is fixedly connected to the corrugated hose 9 . The stepper motor 7 operates in response to a driver's instruction.

[0092] The above technical solution provides a complete monitoring system structure and improves the automation function of the entire product.

[0093] Reference Figure 8 , Figure 9 As shown, a control method based on a heating air supply system includes:

[0094] Get the distance between the current user and the air outlet of the air conditioner indoor unit, set to L;

[0095] Get the current user's activity time in the activity area, set as t;

[0096] The above-mentioned distance L and time t values are sent to the controller, and the controller dynamically adjusts the height h of the outlet of the induced draft duct assembly from the indoor ground according to the obtained values.

[0097] Establish an adjustment model for the distance L and height h, where the adjustment model is h = (10.9 - L) / 2.1. This adjustment model is obtained based on numerical simulation. The air lake hot air attachment distance x at different air supply heights h is simulated, and the relationship between x and h is fitted in the origin software as x = 10.9 - 2.1*h. By inverse deduction, the relationship between the current distance L of the user from the air outlet of the air conditioner indoor unit and the air supply outlet height h to be controlled is h = (10.9 - L) / 2.1.

[0098] When t > t1, the current distance L is fed back to the controller, denoted as x0, and the h value that triggered the last adjustment action is denoted as x1. When x0 < x1, the air duct component rotates upward; when x0 > x1, the air duct component rotates downward and translates; when x0 = x1, the air duct component remains stationary; when t ≤ t1, the h value is not fed back to the controller.

[0099] The value of t1 is 3min < t1 < 5min, and values such as 3.5min, 4min, 5min, etc. can also be selected, which are specifically set according to actual requirements. The purpose of setting this time is to, within a certain period of time, cooperate with the controller to adjust the height of the outlet of the air duct component from the indoor ground at any time, and better achieve the optimal utilization of energy.

[0100] In the specific working process, the human body recognition sensor 4 senses the position x of the human body from the air outlet and the time t since the last human body movement, and feeds x back to the controller (microcontroller) 5. The built-in program of the controller is h = (10.9 - x) / 2.1, and the obtained h value is fed back to the driver. The driver 6 controls the rotation of the bearing 8 of the stepper motor 7. The rotation of the bearing 8带动 the height of the corrugated hose 9, rotates the corrugated hose 9, and adjusts the height of the air supply outlet from the ground to h, thus meeting the requirement of the attachment distance of x. Specifically, the height of the corrugated hose 9 from the ground in its natural vertical state is 1.2m.

[0101] When t > t1, the current distance L is fed back to the controller, denoted as x0, and the h value that triggered the last adjustment action is denoted as x1. When x0 < x1, the air duct component rotates upward; when x0 > x1, the air duct component rotates downward and translates; when x0 = x1, the air duct component remains stationary; when t ≤ t1, the h value is not fed back to the controller. The value of t1 is 3min < t1 < 5min.

[0102] Example 4:

[0103] Refer to Figure 12 As shown, this example is a numerical simulation. The room size is selected as 12m × 12m × 2.8m, the air supply outlet size is R = 0.04m, and the air supply outlet height from the ground is 2.8m; the return air outlet size is 0.3m × 0.3m, the air supply speed is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 5.0m.

[0104] The different shaded colors in the figure represent different temperatures. See the temperature scale in the upper part of the figure. The darker the color, the lower the temperature. The figure below is a cloud diagram of mixed ventilation simulation under the same working conditions ( Figure 13 ), compared with the implementation cases in the present invention, it can be seen that in the mixed ventilation, the upper part of the room is hot and the lower part is cold. In the present invention, the hot air can be directly sent to the lower part of the room, and the temperature in the lower part of the room is higher.

[0105] Example 5:

[0106] Reference Figure 14 As shown, this embodiment is a numerical simulation. The room dimensions are 12m×12m×2.8m, the air outlet dimensions are R=0.04m, the air outlet height from the ground is 2.4m, the return air outlet dimensions are 0.3m×0.3m, the air supply velocity is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 6.0m.

[0107] Example 6:

[0108] Reference Figure 15 As shown, this embodiment is a numerical simulation. The room dimensions are 12m×12m×2.8m, the air outlet dimensions are R=0.04m, the air outlet height from the ground is 1.8m, the return air outlet dimensions are 0.3m×0.3m, the air supply velocity is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 7.2m.

[0109] Example 7:

[0110] Reference Figure 16 As shown, this embodiment is a numerical simulation. The room dimensions are 12m×12m×2.8m, the air outlet dimensions are R=0.04m, the air outlet height from the ground is 1.5m, the return air outlet dimensions are 0.3m×0.3m, the air supply velocity is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 8.0m.

[0111] Example 8:

[0112] Reference Figure 17 As shown, this embodiment is a numerical simulation. The room dimensions are 12m×12m×2.8m, the air outlet dimensions are R=0.04m, the air outlet height from the ground is 1.2m, the return air outlet dimensions are 0.3m×0.3m, the air supply velocity is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 8.3m.

[0113] Example 9:

[0114] Reference Figure 18As shown, this embodiment is a numerical simulation. The room dimensions are 12m×12m×2.8m, the air outlet dimensions are R=0.04m, the air outlet height from the ground is 0.6m, the return air outlet dimensions are 0.3m×0.3m, the air supply velocity is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 8.0m.

[0115] Example 10:

[0116] Reference Figure 19 As shown, this embodiment is a numerical simulation. The room dimensions are 12m×12m×2.8m, the air outlet dimensions are R=0.04m, the air outlet height from the ground is 0.3m, the return air outlet dimensions are 0.3m×0.3m, the air supply velocity is 3.0m / s, and the air supply temperature is 40°C. The attachment length is 6.4m.

[0117] The relevant data in Examples 4 to 10 are summarized and the table is as follows:

[0118]

[0119] In summary, Examples 4 to 10 address the difficulty of delivering heated air to the user space in the conventional upward air delivery method. This invention delivers heated air directly to the lower part of the room with low loss, effectively suppressing the upward flow of heated air and ensuring a good horizontal extension and diffusion of heated air.

[0120] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0121] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0122] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A hot air supply system, characterized in that: include: An air duct assembly is vertically installed at a corner of a room wall, one end of the air duct assembly is connected to the air conditioner indoor unit, and the other end is connected to the room; The two planes of the induced draft duct assembly in the vertical direction are respectively parallel to the two indoor walls at the indoor corners where the induced draft duct assembly is installed; the air blown out by the induced draft duct assembly forms at least two wall-type air supply air flows along the indoor walls, and then hits the indoor floor to form a hot air lake, which is simultaneously diffused to the entire indoor space; The outlet of the air duct assembly is 1.1-3m away from the indoor floor; The induced draft duct assembly is a retractable structure, and the control method of the heating air supply system includes: obtaining the distance between the current user and the air outlet of the air-conditioning indoor unit, setting it as L; obtaining the activity time of the current user in the activity area, setting it as t; sending the above distance L and time t values to the controller, and the controller dynamically adjusts the height h of the outlet of the induced draft duct assembly from the indoor ground according to the obtained values; when t>t1, the current distance L is fed back to the controller, recorded as x0, and the distance L value that triggered the last adjustment action is recorded as x1, when x0<x1, the induced draft duct assembly rotates upward; when x0>x1, the induced draft duct assembly translates and rotates downward; when x0=x1, the induced draft duct assembly remains stationary; when t≤t1, the h value is not fed back to the controller.

2. A hot air supply system according to claim 1, characterized in that: In the lateral direction, the shadowed portion of the air duct assembly is located on two adjacent indoor walls at the same time.

3. A hot air supply system according to claim 1, characterized in that: The cross-section of the air duct assembly is fan-shaped.

4. A hot air supply system according to claim 2, characterized in that: The air duct assembly adopts a corrugated hose, and the corrugated hose is a telescopic structure, which can adjust the distance between the outlet of the air duct assembly and the indoor floor.

5. A hot air supply system according to claim 2, characterized in that: The air supply surface formed by the air outlet of the air duct assembly is larger than the air supply surface of the air outlet of the air conditioner indoor unit.

6. A hot air supply system according to claim 4, characterized in that: A monitoring system is set up in the air conditioner indoor unit, which includes a human body recognition sensor, a controller communicating with the human body recognition sensor, and an actuator that receives instructions from the controller. The actuator is used to control the height h between the outlet of the corrugated hose and the indoor floor.

7. A hot air supply system according to claim 6, characterized in that: The actuator includes a stepper motor and a bearing connected to the stepper motor shaft, wherein the bearing is fixedly connected to the corrugated hose; the stepper motor receives instructions from a driver to perform a movement.

8. A control method for a hot air supply system according to any one of claims 1 to 7, characterized in that: include: Get the distance between the current user and the air outlet of the air conditioner indoor unit, set to L; Get the current user's activity time in the activity area, set as t; The above distance L and time t values are sent to the controller, and the controller dynamically adjusts the height h of the outlet of the induced draft duct assembly from the indoor ground according to the obtained values; When t>t1, the current distance L is fed back to the controller, recorded as x0, and the distance L value that triggered the last adjustment action is recorded as x1. When x0<x1, the duct assembly rotates upward; when x0>x1, the duct assembly translates downward; when x0=x1, the duct assembly remains stationary; when t≤t1, the h value is not fed back to the controller.

9. A control method for a heating air supply system according to claim 8, characterized in that: An adjustment model of the distance L and the height h is established, wherein the adjustment model h=(10.9-L) / 2.

1.

10. The control method of a hot air supply system according to claim 8, characterized in that: The t1 value is 3 minutes <t1<5min。

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