Heat exchange device, heat exchange system, and control method for heat exchange device

Abstract

The invention discloses a heat exchange device, a heat exchange system and a control method of the heat exchange device.The heat exchange device comprises an air quality detection unit, an air volume adjusting valve, an air supply part and a control part, and the air quality detection unit is used for obtaining air quality parameters; the air volume adjusting valve is used for controlling the air volume passing through the air volume adjusting valve; the air supply part is used for sucking air into the heat exchange device and discharging the air from the heat exchange device; the control part is configured to control the opening and closing angle of the air volume adjusting valve according to the air quality parameters obtained by the air quality detection unit. According to the heat exchange device, the control part controls the air volume of the air volume adjusting valve corresponding to the target room according to the air quality parameters, the air volume of the target room is automatically adjusted, vitiated air is exhausted in time, and the effect of intelligent partition control is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a heat exchange device, a heat exchange system and a control method for the heat exchange device. Background Art

[0002] In the heat exchange device of the prior art, construction workers manually adjust the air valve according to the size of the room during installation. Since the adjustment of the air valve is fixed, it cannot meet the usage needs of multiple scenarios in life.

[0003] When the angle of the air valve is set to a small value and the concentration of carbon dioxide or dust particles such as PM2.5 in the room is too high, the ventilation volume in the room will be insufficient. When ventilating multiple rooms, the air volume in each room cannot be adjusted in a targeted manner according to the air quality in each room, which will affect the air quality in the room. Summary of the Invention

[0004] In order to solve the above-mentioned problems, the present invention provides a heat exchange device, a heat exchange system and a control method for the heat exchange device. The control unit controls the air volume of the air volume regulating valve corresponding to the target room according to the air quality parameters. By automatically adjusting the air volume of the target room, the polluted air is discharged in time, thereby achieving the effect of intelligent zoning control.

[0005] In a first aspect, the heat exchange device proposed by the present invention includes: a body;

[0006] An air quality detection unit, used to obtain air quality parameters;

[0007] An air volume regulating valve, used to control the air volume passing through the air volume regulating valve;

[0008] an air supply unit, configured to draw air into the heat exchange device and discharge the air from the heat exchange device;

[0009] Control Department;

[0010] The control unit is configured to control the opening and closing angle of the air volume regulating valve according to the air quality parameters obtained by the air quality detection unit.

[0011] In some optional embodiments, the air quality detection unit includes: a room air quality detection unit and a main body air quality detection unit; the room air quality detection unit is used to obtain the air quality parameters of the target room; the main body air quality detection unit is used to obtain the air quality parameters entering the heat exchange device; the control unit determines whether the air quality parameters of the target room can be obtained from the room air quality detection unit; when the control unit can obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the opening and closing angle of the air volume regulating valve according to the air quality parameters obtained by the room air quality detection unit; when the control unit cannot obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the opening and closing angle of the air volume regulating valve according to the air quality parameters obtained by the main body air quality detection unit.

[0012] In some optional embodiments, the control unit controls the operation mode of the heat exchange device according to the air quality parameters obtained by the main body air quality detection unit.

[0013] In some optional embodiments, the operating mode of the heat exchange device includes: a ventilation mode; when the carbon dioxide concentration obtained by the main body air quality detection unit is greater than or equal to a threshold value A, the control unit controls the heat exchange device to operate in a ventilation mode; when the carbon dioxide concentration obtained by the main body air quality detection unit is less than a threshold value A, the control unit controls the operating mode of the heat exchange device according to the dust particle concentration obtained by the main body air quality detection unit.

[0014] In some optional embodiments, the operating mode of the heat exchange device also includes: an internal circulation mode; when the dust particle concentration obtained by the main air quality detection unit is greater than or equal to a threshold value B, the control unit controls the heat exchange device to alternately operate the ventilation mode and the internal circulation mode.

[0015] In some optional embodiments, when the heat exchange device alternately operates in the ventilation mode and the internal circulation mode, after the internal circulation mode operates for a duration T1, the ventilation mode operates for a duration T2, and T1 is the same as T2.

[0016] In some optional embodiments, the operating mode of the heat exchange device also includes: a mixed air mode; when the dust particle concentration obtained by the main body air quality detection unit is less than a threshold value B and greater than or equal to a threshold value C, the control unit controls the heat exchange device to operate the mixed air mode; when the dust particle concentration obtained by the main body air quality detection unit is less than a threshold value C, the control unit controls the heat exchange device to operate the ventilation mode.

[0017] In some optional embodiments, in the mixed air mode, when the dust particle concentration obtained by the main air quality detection unit is greater than or equal to a threshold value B, the control unit controls the heat exchange device to alternately operate the ventilation mode and the internal circulation mode; when the dust particle concentration obtained by the main air quality detection unit is less than a threshold value C, after continuing to operate the mixed air mode for a period of time T3, when the dust particle concentration obtained again is less than the threshold value C, the control unit controls the heat exchange device to switch to the ventilation mode.

[0018] In some optional embodiments, the threshold C has at least three levels; the value of the threshold B is 1.5 times the value of the threshold C.

[0019] In some optional embodiments, the air volume regulating valve includes: a blade and a driving member; the driving member drives the blade to rotate to achieve angle adjustment of the blade; according to the angle of rotation of the blade, the air volume regulating valve has a first opening angle and a second opening angle, and the first opening angle is greater than the second opening angle.

[0020] In some optional embodiments, the air volume regulating valve also has a third opening angle; when the control unit is unable to obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the air volume regulating valve to adjust to the third opening angle, and the third opening angle is smaller than the second opening angle.

[0021] In some optional embodiments, when the carbon dioxide concentration obtained by the room air quality detection unit is greater than or equal to threshold A, the control unit controls the air volume regulating valve to open to a first opening angle; when the carbon dioxide concentration obtained by the room air quality detection unit is less than threshold A, the control unit controls the opening and closing angle of the air volume regulating valve according to the parameters of the dust particle concentration.

[0022] In some optional embodiments, when the dust particle concentration obtained by the room air quality detection unit is greater than or equal to a threshold value C, the control unit controls the air volume regulating valve to open to a first opening angle; when the dust particle concentration obtained by the room air quality detection unit is less than the threshold value C, the control unit controls the air volume regulating valve to open to a second opening angle.

[0023] In some optional embodiments, when the control unit is unable to obtain the air quality parameters of the target room from the room air quality detection unit, when the carbon dioxide concentration obtained by the main body air quality detection unit is greater than or equal to threshold A, or the dust particle concentration obtained by the main body air quality detection unit is greater than or equal to threshold C, the control unit controls the air volume regulating valve to open to a first opening angle; when the dust particle concentration obtained by the main body air quality detection unit is less than threshold C, the control unit controls the air volume regulating valve to open to a second opening angle.

[0024] In some optional embodiments, when the carbon dioxide concentration obtained by the main air quality detection unit or the room air quality detection unit is greater than or equal to a threshold value A, the control unit controls the air volume regulating valve or the operating mode to remain unchanged until the carbon dioxide concentration obtained by the main air quality detection unit or the room air quality detection unit is less than the threshold value A, and then continues to operate for a duration T4.

[0025] In some optional embodiments, within the time period T4, when the acquired carbon dioxide concentration is greater than or equal to the threshold value A, the time period T4 is restarted.

[0026] In some optional embodiments, the control unit also includes an air volume preset value corresponding to the blade opening angle set by the air volume regulating valve; based on the air volume preset value and the number of the air volume regulating valves, the air volume output value that can be delivered to each target room at different gears is calculated.

[0027] In some optional embodiments, the control unit calculates the total output air volume based on the air volume output value of the target room at each gear and the number of target rooms corresponding to the air volume output value of each gear.

[0028] In some optional embodiments, the control unit controls the air supply unit to select the required output gear according to the total output air volume.

[0029] In some optional embodiments, it also includes: a centralized air supply mode capable of centrally supplying air to one of the target rooms; after the control unit receives the selection feedback of the centralized air supply mode, it controls the air volume regulating valve of the corresponding target room to open to a first opening angle, and the air supply unit outputs the maximum air volume.

[0030] In some optional embodiments, after receiving the selection feedback of the centralized air supply mode, the control unit controls the air volume control valves in the open state corresponding to other rooms other than the target room to switch to a third opening angle.

[0031] In some optional embodiments, the control unit obtains the number of target rooms based on the number of the room air quality detection units, and then controls the operating mode of the heat exchange device based on the ratio of the air quality parameters of the room air quality detection units and the number of rooms.

[0032] In some optional embodiments, when the ratio of the air quality parameters obtained from the room air quality detection unit to the number of rooms is greater than 50%, the control unit controls the heat exchange device to switch the operating mode.

[0033] In a second aspect, the heat exchange system proposed by the present invention comprises:

[0034] The heat exchange device mentioned above;

[0035] A wind box connected to the heat exchange device through a pipeline;

[0036] The air volume regulating valve is arranged on the air distribution box.

[0037] In a third aspect, the control method of the heat exchange device proposed by the present invention includes:

[0038] Obtain air quality parameters from the air quality detection unit;

[0039] Based on the air quality parameters, the opening and closing angles of the air volume control valve are controlled.

[0040] In some optional embodiments, obtaining the air quality parameters of the air quality detection unit includes: after obtaining the air quality parameters of the main body air quality detection unit, determining whether the air quality parameters of the room air quality detection unit can be obtained; controlling the opening and closing of the air volume regulating valve based on the air quality parameters includes: when the air quality parameters of the room air quality detection unit can be obtained, controlling the opening and closing angle of the air volume regulating valve according to the air quality parameters of the room air quality detection unit; when the air quality parameters of the room air quality detection unit cannot be obtained, controlling the opening and closing angle of the air volume regulating valve according to the air quality parameters of the main body air quality detection unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Schematic diagram of the structure of a heat exchange device according to an embodiment of the present invention;

[0042] Figure 2 This is a flow chart of a method for controlling an air volume regulating valve of a heat exchange device according to an embodiment of the present invention;

[0043] Figure 3 This is a second flow chart of a method for controlling an air volume regulating valve of a heat exchange device according to an embodiment of the present invention;

[0044] Figure 4This is one of the flow charts of the method for controlling the operating mode of the heat exchange device according to an embodiment of the present invention;

[0045] Figure 5 This is the second flow chart of the method for controlling the operating mode of the heat exchange device according to an embodiment of the present invention.

[0046] Reference numerals

[0047] Heat exchange device 100, air supply inlet 11, air supply outlet 12, exhaust air inlet 13, exhaust air outlet 14, main body air quality detection unit 15, pipeline 16, air volume regulating valve 17, and air distribution box 200. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0049] The following orientations or positional relationships are intended solely for the purpose of facilitating the description of the present disclosure and simplifying the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present disclosure. Specifically, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0050] In the description of this disclosure, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood broadly. For example, they can refer to mechanical or electrical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0051] The structure and working process of the heat exchange device 100 of the present disclosure are described below.

[0052] The heat exchange device 100 has an installed state. This refers to a state where the heat exchange device 100 is mounted on the ceiling or placed on the floor and is functioning normally. The heat exchange device 100 draws in air from both indoor and outdoor spaces, performs heat exchange internally, and then exhausts it back into the room or outdoors. Examples include fresh air and exhaust ventilation equipment containing a heat exchange core. Heat exchange, as used herein, refers to the process of heat transfer and energy exchange between spaces due to temperature differences.

[0053] In an embodiment of the present disclosure, the heat exchange device 100 can be installed indoors, with the outdoor and indoor areas separated by a wall. The heat exchange device 100 includes a housing, a heat exchange core, an air supply unit, an air quality detection unit, an air volume control valve 17, and a control unit.

[0054] The shell is used to form the outer contour of the heat exchange device 100 and is in the shape of a hollow rectangular box. The shell includes a top wall, a bottom wall, and four side walls. The top wall and the bottom wall are the surfaces located at the top and bottom of the shell, respectively. The four side walls are a first side wall arranged on the right side of the shell, a second side wall arranged on the left side of the shell opposite to the first side wall, a front wall arranged at the front of the shell adjacent to the first side wall and the second side wall, and a rear wall arranged at the rear of the shell. The front wall and the rear wall are arranged opposite to each other. The interior of the shell forms an air supply inlet space, an exhaust air supply inlet space, an air supply outlet space, and an exhaust air outlet space separated from each other. The shell is provided with an air supply inlet 11, an air supply outlet 12, an exhaust air supply inlet 13, and an exhaust air outlet 14. In other words, the air supply inlet space is provided with an air supply inlet 11, the exhaust air supply space is provided with an exhaust air supply inlet 13, the air supply outlet 12 is provided in the air supply outlet space, and the exhaust air outlet space is provided with an exhaust air outlet 14.

[0055] The air inlet 11 is an opening for connecting the interior of the housing with the outside of the housing through a pipe so that the outdoor air can enter the interior of the housing. The air inlet 11 is arranged on the first side wall of the housing and is located on the right side of the housing.

[0056] The air supply outlet 12 is an opening for connecting the interior of the housing and the room through a pipe so that the air in the housing is blown into the room. The air supply outlet 12 is arranged on the second side wall of the housing and is located on the left side of the housing.

[0057] The exhaust air inlet 13 is an opening that connects the interior of the housing and the room through a duct 16 to draw air from the room into the housing. The exhaust air inlet 13 is provided on the second side wall of the housing, at the left side of the housing.

[0058] The exhaust air outlet 14 is an opening for connecting the interior of the housing and the outside of the housing through a duct 16 so that the air in the housing is blown to the outside of the housing. The exhaust air outlet 14 is provided on the first side wall of the housing and is located on the right side of the housing.

[0059] The heat exchange core is housed within the housing and is constructed from multiple thin plates bonded together. For example, the heat exchange core can be a full heat exchange core. Air flows through the supply and exhaust ducts, exchanging heat as it passes through the heat exchange core. The heat exchange core includes an air inlet and outlet surface in the supply duct, and an exhaust inlet and outlet surface in the exhaust duct.

[0060] The shell forms a supply air passage and an exhaust air passage. The supply air passage guides air to enter from a supply air inlet 11, pass through the heat exchange core, and be discharged from a supply air outlet 12. The exhaust air passage guides air to enter from an exhaust air inlet 13, pass through the heat exchange core, and be discharged from an exhaust air outlet 14.

[0061] The air supply part includes an exhaust air fan and a supply air fan.

[0062] The exhaust air fan includes an exhaust air motor and an exhaust air blade, which is driven to rotate by the exhaust air motor to generate an air flow. The exhaust air blade may, for example, be a multi-wing centrifugal blade. The supply air fan includes a supply air motor and a supply air blade, which is driven to rotate by the supply air motor to generate an air flow. The supply air blade may, for example, be a multi-wing centrifugal blade. The exhaust air fan and the supply air fan are arranged on the downstream side of the heat exchange core opposite each other, air blown from the supply air outlet surface of the heat exchange core enters the supply air fan, and air blown from the exhaust air outlet surface of the heat exchange core enters the exhaust air fan.

[0063] The air volume regulating valve 17 is an electric air valve, which is connected to the indoor air outlet through a pipeline and can automatically regulate the air volume of each room during the operation of the heat exchange device 100. The air volume regulating valve 17 can be installed on the heat exchange device 100 or in the air distribution box 200 in the heat exchange system. The air volume regulating valve 17 includes a blade assembly and a driving member. The blade assembly includes a plurality of annularly arranged blades, which are located between two adjacent support plates. The number of blades is set according to actual needs, for example, the number of blades is five, and the driving member drives the plurality of blades to open or close synchronously. The air volume regulating valve 17 can be set to three air volumes, high, medium and low, through a wire control device. The opening angle of the air volume regulating valve 17 increases in turn according to the settings of low, medium and high. When the blades are in the closed state, the blades are parallel to the support plates, at this time the air volume is zero, and the opening angle of the blades at this time is defined as zero degrees; when the blades are rotated from zero degrees in the closed state to 90 degrees, the blades are in a fully open state, at this time the air volume is the largest, which is the first opening angle; when the blades are rotated from zero degrees in the closed state to 50 degrees, the blades are in a half-open state, at this time the air volume is less than the first opening angle, which is the second opening angle; when the blades are rotated from zero degrees in the closed state to 40 degrees, the air volume is less than the second opening angle, which is the third opening angle; in addition, in other embodiments, the blades can be rotated to 10 degrees, 20 degrees, 30 degrees, etc. according to the demand of air volume.

[0064] The air quality detection unit can be installed in the target room, or it can be set at the exhaust air inlet 13 of the heat exchange device 100. The air quality detection unit can obtain the air quality parameters in the target room or the air quality parameters entering the heat exchange device 100, and transmit the detected air quality to the control unit. The air quality detection unit can be one of a carbon dioxide sensor, a formaldehyde sensor, a dust particle sensor, a TVOC sensor, a humidity sensor, and a temperature sensor, or a combination of several of them. The air quality detection unit in this embodiment can be used to obtain air PM2.5 parameters and detect carbon dioxide parameters, humidity parameters, and temperature parameters.

[0065] The control unit is configured to receive the air quality parameters obtained by the air quality detection unit and send signals to control the opening and closing angle of the air volume control valve 17, the operation mode of the heat exchange device 100, the operation of the air supply unit, etc.

[0066] The above is a description of the structure of the heat exchange device 100 . Next, the structure of the heat exchange system will be described. The heat exchange system includes the air distribution box 200 and the above-mentioned heat exchange device 100 .

[0067] The air distribution box 200 is connected to the heat exchange device 100 via a pipe 16. Specifically, it can be connected to the air supply outlet 12 of the heat exchange device 100, or it can be connected to the exhaust air inlet 13 of the heat exchange device 100. The air distribution box 200 can be used to discharge the air in the heat exchange device 100 to each room, or it can be used to collect the air from each room into the heat exchange device 100.

[0068] The working process of the heat exchange device 100 is described below.

[0069] The target room is described by taking two rooms as an example. The two rooms are defined as Room 1 and Room 2. One air volume regulating valve 17 controls the air volume entering Room 1, and the other air volume regulating valve 17 controls the air volume entering Room 2.

[0070] For example, when the air quality detection unit detects that the carbon dioxide concentration in room 1 is greater than or equal to a first threshold, the control unit controls the air volume control valve 17 in room 1 to adjust to a first opening angle. The control unit controls the air volume control valve 17 to maintain the first opening angle until the carbon dioxide concentration obtained by the air quality detection unit is less than the first threshold. At this point, the control unit controls the opening angle of the air volume control valve 17 based on the dust particle concentration parameter.

[0071] For example, when the air quality detection unit detects that the carbon dioxide concentration in room 2 is less than a first threshold, the control unit controls the air volume control valve 17 in the corresponding room 2 based on the dust particle concentration parameter. When the dust particle concentration detected by the air quality detection unit is greater than or equal to a second threshold, the control unit controls the air volume control valve 17 in the corresponding room 2 to remain open at the first opening angle. When the dust particle concentration is less than the second threshold, the control unit controls the air volume control valve 17 in the corresponding room 2 to adjust to the second opening angle.

[0072] According to the detected air quality parameters, the opening angle of the air volume regulating valve 17 corresponding to room 1 and the opening angle of the air volume regulating valve 17 corresponding to room 2 are controlled, which not only increases the ventilation volume of the designated room in a targeted manner, but also does not affect the ventilation volume of other rooms, thereby achieving the effect of intelligent zoning control.

[0073] In an embodiment of the present disclosure, the air quality detection unit is used to obtain the air quality parameters in the target room or the heat exchange device 100. The control unit controls the air volume of the air volume regulating valve 17 corresponding to the target room according to the air quality parameters. By automatically adjusting the air volume of the target room, the polluted air is discharged in time, thereby achieving the effect of intelligent zoning control.

[0074] In an embodiment of the present disclosure, the air quality detection unit includes a room air quality detection unit and a main body air quality detection unit 15. The room air quality detection unit is used to obtain the air quality parameters of the target room, and the main body air quality detection unit 15 is used to obtain the air quality parameters entering the heat exchange device 100; the control unit determines whether the air quality parameters of the target room can be obtained from the room air quality detection unit.

[0075] When the control unit can obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the opening and closing angles of the air volume regulating valve 17 according to the air quality parameters obtained by the room air quality detection unit; when the control unit cannot obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the opening and closing angles of the air volume regulating valve 17 according to the air quality parameters obtained by the main body air quality detection unit 15.

[0076] Specifically, the main body air quality detection unit 15 is provided at the exhaust air inlet 13. The main body air quality detection unit 15 obtains the air quality parameters entering the heat exchange device 100 and transmits the detected air quality parameters to the controller. The main body air quality detection unit 15 can be one or a combination of a carbon dioxide sensor, a formaldehyde sensor, a dust particle sensor, a TVOC sensor, a humidity sensor, and a temperature sensor. In this embodiment, the main body air quality detection unit 15 can be used to obtain air PM2.5 parameters and detect carbon dioxide parameters, humidity parameters, and temperature parameters.

[0077] The room air quality detection unit is located in an air quality display placed in the target room, obtains the air quality parameters of the target room and displays them on the air quality display, and can transmit the detected air quality parameters to the controller. Similarly, the room air quality detection unit can be one of a carbon dioxide sensor, a formaldehyde sensor, a dust particle sensor, and a TVOC sensor, or a combination of several of them. The main body air quality detection unit 15 in this embodiment can be used to obtain air PM2.5 parameters and detect carbon dioxide parameters, humidity parameters, and temperature parameters.

[0078] The heat exchange system also includes an air quality display and a wired controller. The air quality display is equipped with a room air quality detection unit and a display screen that displays the air quality parameters obtained by the room air quality detection unit. The display screen can intuitively display the current room air quality.

[0079] The wired controller is provided with a main body air quality detection unit 15 and a display screen for displaying the air quality parameters obtained by the main body air quality detection unit 15. In addition, the wired controller also has a mode selection function. The user can use the wired controller to select automatic mode or centralized air supply mode, etc., and can also select a heat exchange mode such as internal circulation mode or ventilation mode.

[0080] The following describes the operating modes of the heat exchange device 100. The ventilation modes of the heat exchange device 100 of this embodiment include heat exchange mode and normal ventilation mode. Depending on the outdoor temperature and humidity parameters, the heat exchange device 100 operates in either heat exchange mode or normal ventilation mode.

[0081] When the heat exchange device 100 is in the heat exchange mode, the air supply outlet 12, the air supply inlet 11, the exhaust air inlet 13, and the exhaust air outlet 14 are opened, and at this time, the air supply fan and the exhaust air fan are started at the same time. On the one hand, the indoor air entering the shell from the exhaust air inlet 13 and a part of the outdoor air entering the shell from the air supply inlet 11, the above two air flows exchange energy with each other at the heat exchange core to achieve heat exchange. After exchanging energy, the air entering from the exhaust air inlet 13 enters the exhaust fan after heat exchange, and is blown out of the room from the exhaust air outlet 14. On the other hand, the air entering from the air supply inlet 11 enters the air supply fan after heat exchange, and is blown out of the room from the air supply outlet 12, achieving heat exchange and ventilation at the same time.

[0082] When the heat exchange device 100 is in normal ventilation mode, the air supply inlet 11, air supply outlet 12, exhaust air inlet 13, and exhaust air outlet 14 are open. The air supply and exhaust fans are started, and the outdoor air entering the housing through the air supply inlet 11 enters the air supply air path, enters the heat exchange core, and is blown out of the room through the air supply outlet 12. The indoor air entering through the exhaust inlet 13 is directly blown out through the exhaust outlet 14, thereby achieving indoor ventilation.

[0083] Furthermore, the heat exchange device 100 of this embodiment includes not only a ventilation mode but also an internal circulation mode and a mixed air mode.

[0084] When the heat exchange device 100 is in the internal circulation mode, the exhaust outlet 14 and the air supply inlet 11 are closed, the exhaust inlet 13 and the air supply outlet 12 are opened, the air supply fan and the exhaust fan are started, and the indoor air entering the shell through the exhaust inlet 13 enters the exhaust air path, passes through the fresh air filter arranged in the exhaust air path, and then enters the heat exchange core. When the indoor air reaches the exhaust outlet 14 after passing through the heat exchange core, since the exhaust outlet 14 is closed, the air will not be discharged from the exhaust outlet 14, but will enter the air supply air path along the channel connecting the exhaust outlet 14 and the air supply inlet 11, and then pass through the return air filter arranged in the air supply air path and then enter the heat exchange core. After passing through the heat exchange core again, the indoor air is discharged into the room from the air supply outlet 12, thereby realizing indoor air circulation.

[0085] When the heat exchange device 100 is in mixed air mode, the air supply inlet 11 is open in addition to the internal circulation mode. At this time, the exhaust outlet 14 remains closed. Outdoor air enters through the air supply inlet 11 and mixes with the air that has flowed through the air supply inlet 11. Although fresh air is introduced in mixed air mode, the amount of fresh air entering is less than that in ventilation mode.

[0086] In this embodiment, the air volume regulating valve 17 is arranged on the air distribution box 200 and is connected to the air supply outlet 12 of the heat exchange device 100 through the pipe 16. When the air supply part is started, the air blown out from the air supply outlet 12 enters the air distribution box 200, and the opening and closing of the air volume regulating valve 17 are adjusted according to the air quality parameters obtained by the room air quality detection unit or the main body air quality detection unit 15, and the pipe 16 leading to the target room is opened or closed. The heat exchange device 100 is linked with the air quality display, the wire controller and the air distribution box 200, so as to adjust the air volume of a specific room in a targeted manner and perform air cleanliness management for a specific room.

[0087] Figure 2 This is a flow chart of a method for controlling an air volume regulating valve of a heat exchange device according to an embodiment of the present invention; Figure 3Flowchart No. 2 of the control method of the air volume regulating valve of the heat exchange device according to the embodiment of the present application; Figure 4 Flowchart No. 1 of the control method of the operation mode of the heat exchange device according to the embodiment of the present application.

[0088] Embodiment 1

[0089] The following describes the operation of the automatic mode with three rooms (room 1, room 2, and room 3) as an example, i.e. the target rooms include room 1, room 2, and room 3, wherein two rooms are provided with air quality displayers, and one room is not provided with an air quality displayer. That is, two rooms can detect the air quality parameters of the rooms through the room air quality acquisition unit, and one room cannot detect the air quality parameters of the room through the room air quality acquisition unit. In this embodiment, the control unit controls the operation mode of the heat exchange device 100 according to the air quality parameters acquired by the body air quality detection unit 15.

[0090] When the user selects the automatic mode on the online controller, the control unit acquires the air quality parameters of the body air quality detection unit 15, and then determines whether the air quality parameters of the room air quality detection unit can be acquired. When it is determined that the air quality parameters of part / whole of the room air quality detection units of the rooms can be acquired, the control unit controls the angle adjustment of the air volume regulating valve 17 corresponding to the part of the rooms. That is, when the control unit can acquire the air quality parameters of the room air quality detection units installed in room 1 and room 2, the opening and closing angles of the air volume regulating valve 17 corresponding to room 1 and room 2 change according to the changes of the air quality parameters of the room air quality detection units.

[0091] When the room air quality detection unit of room 1 feeds back that the carbon dioxide concentration is greater than or equal to the threshold value A, the control unit controls the air volume regulating valve 17 corresponding to room 1 to adjust to the first opening angle. The control unit controls the air volume regulating valve 17 to adjust to the first opening angle and remain unchanged until the room air quality detection unit acquires the carbon dioxide concentration less than the threshold value A, and then forcibly continues to operate for a time length T4, which is preferably 10 minutes. During the time length T4, the room air quality detection unit acquires the carbon dioxide concentration every time length T5, which is preferably 5 seconds. When the carbon dioxide concentration acquired at one time is still greater than the threshold value A, the time length T4 is recalculated, i.e. the time length T4 is restarted from the time when the acquired carbon dioxide concentration is greater than the threshold value A, until all the carbon dioxide concentrations acquired during the time length T4 are less than the threshold value A, and then the control unit controls the opening and closing angles of the air volume regulating valve 17 of room 1 according to the parameters of the dust particulate matter concentration.

[0092] For example, if the room air quality detection unit in room 2 reports that the carbon dioxide concentration is less than threshold A, the control unit controls the opening and closing angles of the air volume control valve 17 in room 2 based on the dust particle concentration parameter. When the dust particle concentration is greater than or equal to threshold C, the air volume control valve 17 in the corresponding room 2 remains open to the first opening angle. When the dust particle concentration is less than threshold C, the control unit controls the air volume control valve 17 in the corresponding room 2 to adjust to the second opening angle. This effectively increases the ventilation volume in a specific room without affecting the ventilation volume in other rooms, achieving the effect of intelligent zoning control.

[0093] In a room without an air quality display, such as room 3, if the air quality parameter of room 3 cannot be obtained by the room air quality detection unit, the control unit may control the air volume control valve 17 corresponding to room 3 to be adjusted to a third opening angle, that is, to open the air volume control valve 17 corresponding to room 3 to a minimum angle.

[0094] In another embodiment, when the control unit cannot receive the air quality parameters for room 3, the control unit controls the angle adjustment of the air volume control valve 17 for room 3 based on the air quality parameters obtained by the main body air quality detection unit 15. While the control unit controls the operating mode of the heat exchange device 100 based on the air quality parameters obtained by the main body air quality detection unit 15, it also controls the angle adjustment of the air volume control valve 17 for room 3. The specific process of the control unit controlling the operating mode of the heat exchange device 100 and the opening angle of the air volume control valve 17 for room 3 based on the air quality parameters obtained by the main body air quality detection unit 15 is as follows.

[0095] The main body's air quality detection unit 15 first obtains the carbon dioxide concentration parameter. When the carbon dioxide concentration is greater than or equal to threshold A, the control unit controls the heat exchange device 100 to operate in ventilation mode. The air volume control valve 17 corresponding to room 3, which does not have an air quality indicator, is adjusted to the first opening angle. In ventilation mode, indoor air with high carbon dioxide concentrations is quickly discharged through the exhaust outlet 14, effectively reducing the indoor carbon dioxide concentration.

[0096] In order to ensure that the air containing high concentration of carbon dioxide is effectively discharged from the room, when the body air quality detection unit 15 obtains the carbon dioxide concentration greater than or equal to the threshold value A, the control unit controls the opening angle or the operation mode of the air volume regulating valve 17 to be constant. Until the carbon dioxide concentration obtained by the body air quality detection unit 15 is less than the threshold value A, the operation is forced to continue for a time T4, preferably T4 is 10 minutes, and during the time T4, the body air quality detection unit 15 obtains the carbon dioxide concentration every time interval T5, preferably T5 is 5 seconds. When the carbon dioxide concentration obtained at one time is still greater than the threshold value A, the time T4 is recalculated, that is, the time T4 is restarted from the time when the obtained carbon dioxide concentration is greater than the threshold value A, and until all the carbon dioxide concentrations obtained during the time T4 are less than the threshold value A, the control unit controls the operation mode of the heat exchange device 100 or the opening angle of the air volume regulating valve 17 according to the parameter of the dust particle concentration obtained by the body air quality detection unit 15.

[0097] When the dust particle concentration obtained is greater than or equal to the threshold value B, the control unit controls the heat exchange device 100 to alternately operate the air exchange mode and the internal circulation mode, and the air volume regulating valve 17 of the room 3 without the air quality display is still at the first opening angle.

[0098] Further, when the heat exchange device 100 alternately operates the air exchange mode and the internal circulation mode, the internal circulation mode operates for a time T1, and then the air exchange mode operates for a time T2. Preferably, the times T1 and T2 are the same. In this embodiment, after the internal circulation mode operates for 1 hour, the operation mode of the heat exchange device 100 is switched to the air exchange mode for 1 hour, and during this time, the air exchange mode and the internal circulation mode are forced to alternately operate without mode switching. In addition, the air volume regulating valve 17 corresponding to the room 3 is opened at the first opening angle for a time T1+T2, until the operation mode of the heat exchange device 100 is changed. In the internal circulation mode of this embodiment, the air enters from the exhaust air inlet 13 and is blown out from the supply air outlet 12, and in this process, the air is not only purified by the fresh air filter, but also purified by the return air filter, so that the concentration of dust particles in the room can be effectively reduced. When switching to the air exchange mode, the outdoor fresh air enters, reducing the stuffy feeling in the room and enhancing the circulation of indoor air.

[0099] When the dust particle concentration obtained is less than the threshold value B and greater than or equal to the threshold value C, the control unit controls the heat exchange device 100 to operate in the mixed air mode for a time T3, and the air volume regulating valve 17 of the room 3 without the air quality display is still at the first opening angle. In the mixed air mode, not only the concentration of dust particles in the room is reduced under the purification of the double filter, but also the outdoor fresh air is introduced in an appropriate amount, so that the indoor air quality is ensured while the indoor air circulation is maintained.

[0100] In mixed air mode, the dust particle concentration is acquired every time interval T5. When the acquired dust particle concentration is greater than or equal to threshold value B, the control unit controls the heat exchange device 100 to switch to alternating operation between ventilation mode and internal circulation mode. However, when the main air quality detection unit 15 acquires a dust particle concentration less than threshold value C, the operating mode is not immediately switched. The air volume control valve 17 remains unchanged, and the mixed air mode is forced to continue until the end of time interval T3. When the acquired dust particle concentration is less than threshold value C again, the heat exchange device 100 switches to ventilation mode.

[0101] When the main body air quality detection unit 15 detects that the dust particle concentration is less than threshold value C, the control unit controls the heat exchange device 100 to operate in ventilation mode, and adjusts the air volume control valve 17 in room 3, which does not have an air quality indicator, to the second opening angle. At this time, the dust particle concentration is low, and in ventilation mode, normal ventilation or heat exchange between indoor and outdoor air can be performed.

[0102] As can be seen from the above, in rooms without an air quality display, such as Room 3, the air volume control valve 17 is adjusted based on the carbon dioxide concentration or dust particle concentration obtained by the main body air quality detection unit 15. When the carbon dioxide concentration is greater than or equal to threshold A or the dust particle concentration is greater than or equal to threshold C, the control unit controls the air volume control valve 17 in the corresponding room 3 to adjust to the first opening angle. When the carbon dioxide concentration is less than threshold A and the dust particle concentration is less than threshold C, the control unit controls the air volume control valve 17 in the corresponding room 3 to adjust to the second opening angle.

[0103] The heat exchange device 100 of this embodiment switches the operating mode and the air volume control valve 17 switches the opening and closing angles as needed, fully meeting the user's intelligent control needs.

[0104] The following example illustrates the operation of automatic mode using three rooms (Room 1, Room 2, and Room 3) each equipped with a room air quality detection unit. This means that the air quality parameters of each room can be obtained through the room air quality detection unit.

[0105] When the control unit receives information that all three rooms can obtain and transmit the air quality parameters of the rooms through the room air quality detection units, the control unit controls the air volume control valves 17 in the three rooms to adjust their angles according to the parameters of the room air quality detection units. That is, if the room air quality detection units of room 1 and room 2 feedback that the carbon dioxide concentration is greater than or equal to threshold A or the dust particle concentration is greater than or equal to threshold C, the control unit controls the air volume control valves 17 in the corresponding rooms 1 and 2 to adjust to the first opening angle. If the room air quality detection unit of room 3 feedback that the carbon dioxide concentration is less than threshold A and the dust particle concentration is less than threshold C, the control unit controls the air volume control valve 17 in the corresponding room 3 to adjust to the second opening angle.

[0106] The control unit obtains the parameters of the main body air quality detection unit 15, which are only used to control the mode of the heat exchange device 100. The air volume control valve 17 will not change according to the changes in the air quality parameters obtained by the main body air quality detection unit 15. For example, when the main body air quality detection unit 15 obtains that the dust particle concentration is less than the threshold value B and greater than or equal to the threshold value C, the heat exchange device 100 runs the mixed air mode for a period of time T3. During this period, even if the main body air quality detection unit 15 obtains that the dust particle concentration is less than the threshold value C, it will not switch to the ventilation mode and adjust the opening and closing angle of the air volume control valve 17. Only when the room air quality detection unit obtains that the dust particle concentration of the target room is less than the threshold value C, the control unit controls the air volume control valve 17 corresponding to the target room to open to the second opening angle, which will not change due to the parameters obtained by the main body air quality detection unit 15.

[0107] Furthermore, in order to better meet user needs, in this embodiment, threshold A and threshold C are each set with at least three gears for users to choose from. Threshold B is 1.5 times the value of threshold C. The value of threshold B changes according to the change of the value of threshold C. Therefore, the number of gears of threshold B and threshold C is the same. Preferably, threshold A has three gears of 800ppm, 1000ppm, and 1500ppm; threshold C has three gears of 35mcg / m 3 50mcg / m 3 , 75mcg / m 3 Three-stage gear: By increasing the number of threshold selectable gears, the user experience is improved.

[0108] In an embodiment of the present disclosure, the control unit also includes an air volume preset value corresponding to the blade opening angle set by the air volume regulating valve 17; based on the air volume preset value and the number of air volume regulating valves 17, the air volume output value that can be delivered to each target room at different gears is calculated.

[0109] Specifically, in order to ensure that the air volume requirements of each room can be met, the control unit also includes air volume preset values ​​corresponding to the blade opening angles set by the air volume regulating valve 17. The number of air volume preset values ​​is the same as the number of blade opening angles set by the air volume regulating valve 17. That is, when the air volume regulating valve 17 of this embodiment includes four gears, namely, closed, first opening angle, second opening angle and third opening angle, the air volume preset value corresponds to the number of blade opening angles set by the air volume regulating valve 17, which also has four gears. For example: when the air volume regulating valve 17 is closed, the air volume preset value is 0; when the air volume regulating valve 17 is at the first opening angle, the air volume preset value is 350m 3 / min; when the air volume regulating valve 17 is at the second opening angle, the preset air volume is 280m 3 / min; When the air volume regulating valve 17 is at the third opening angle, the preset air volume value is 210m 3 / min.

[0110] Then, the control unit calculates the air volume output value that can be delivered to each room at different gears based on the preset air volume value and the number of air volume regulating valves 17. Take 8 rooms as an example, 350m 3 / min, the air volume output value of each room is 350 / 8, that is, 43; 280m 3 / min, the air volume output value of each room is 280 / 8, that is, 35. After calculating the air volume output value of each gear, the control unit calculates the total output air volume based on the air volume output value of the room at each gear and the number of target rooms corresponding to the air volume output value of each gear. That is, when the air volume regulating valve 17 of 1 room is in the closed state, the air volume regulating valves 17 of 3 rooms are opened to the first angle, and the air volume regulating valves 17 of 4 rooms are opened to the second angle, the control unit calculates the total output air volume to be 1*0+3*43+4*35=229m 3 / min.

[0111] Finally, the control unit controls the air supply unit to select the required air volume level according to the total air volume output. Further, in order to optimize the air volume level output by the air supply unit, this embodiment sets the air volume level with 20 as a level. For example, if the total air volume output is 240m 3 / min to 211m 3 When the output value is within / min, the air supply unit runs for 240m 3 / min air volume level. The total air volume output is calculated to be 260m 3 / min to 241m 3 When the output value is within / min, the air supply unit runs for 260m 3 / min air volume level, and so on. The control unit calculates the total output air volume to be 229m 3 / min, the control unit controls the air supply unit to run 240m 3 / min air volume level.

[0112] Still taking 8 rooms as an example, 350m 3 / min, the air volume output value of each room is 350 / 8, that is, 43; 280m 3 / min, the air volume output value of each room is 280 / 8, that is, 35; 210m 3 / min, the air volume output value of each room is 210 / 8, that is, 26. For example, when the air volume regulating valve 17 of one room is closed, the air volume regulating valves 17 of three rooms are opened to the first angle, the air volume regulating valves 17 of two rooms are opened to the second angle, and the air volume regulating valves 17 of two rooms are opened to the third angle, the total air volume output calculated by the control unit is 1*0+3*43+2*35+2*26=251m3 / min. The control unit calculates the total output air volume to be 251m 3 / min, the control unit controls the air supply unit to run 260m 3 / min air volume level.

[0113] According to the above calculation method, it can not only meet the air volume demand of each room, but also evenly distribute the air volume throughout the house. The uniform air volume helps to improve the user experience.

[0114] In an embodiment of the present disclosure, the heat exchange device 100 also includes a centralized air supply mode capable of centrally supplying air to one of the target rooms; after the control unit receives the selection feedback of the centralized air supply mode, it controls the air volume regulating valve 17 of the corresponding target room to open to the first opening angle, and the air supply unit outputs the maximum air volume.

[0115] In order to achieve the rapid ventilation function of a single room, a centralized air supply mode is also provided for centralized air supply to one of the rooms. After selecting the option of centralized air supply to the target room on the online controller, the control unit controls the air volume regulating valve 17 of the target room to open to the first opening angle according to the selected instruction, that is, the ventilation volume is maximum, and the air supply unit outputs the maximum air volume.

[0116] Furthermore, the remaining opened air volume control valves 17 are switched to the third opening angle, and the remaining closed air volume control valves 17 remain closed. In this way, when the air quality in the target room is poor or a large amount of carbon dioxide is produced, and ventilation is required in a short period of time, most of the air generated by the air supply unit is concentrated into the designated target room, effectively and quickly ventilating the designated target room without affecting the ventilation of other rooms. Figure 5 This is the second flow chart of the method for controlling the operating mode of the heat exchange device 100 according to an embodiment of the present invention.

[0117] Example 2

[0118] In this embodiment, the controller obtains the number of target rooms according to the number of room air quality detection units, and then controls the operation mode of the heat exchange device 100 according to the ratio of the air quality parameters of the room air quality detection units and the number of rooms.

[0119] The structure of the heat exchange device 100 or heat exchange system in Example 2 is the same as that in Example 1 and will not be elaborated on here. The main difference is that the operating mode of the heat exchange device 100 is switched based on the air quality parameters obtained by the room air quality detection units and the number of rooms with the same air quality conditions. When all or some rooms are equipped with air quality indicators, the control unit obtains the number of target rooms based on the number of room air quality detection units and then controls the operating mode of the heat exchange device 100 based on the ratio of the air quality parameters of the room air quality detection units to the number of rooms.

[0120] The air quality parameters detected by the room air quality detection unit include carbon dioxide concentration and dust particle concentration. In this embodiment, the target room refers to a room with a room air quality detection unit, and the room air quality detection unit is capable of detecting the carbon dioxide concentration and dust particle concentration of the target room. When the operating mode of the heat exchange device 100 is controlled according to the carbon dioxide concentration parameter, the ratio of the number of rooms refers to the ratio of the total number of rooms in all target rooms whose carbon dioxide concentration is greater than or equal to the threshold value A to the total number of target rooms. When the operating mode of the heat exchange device 100 is controlled according to the dust particle concentration parameter, the ratio of the number of rooms refers to the ratio of the total number of rooms in all target rooms whose dust particle concentration is greater than or equal to the threshold value C to the total number of target rooms.

[0121] For example, among all target rooms, when the number of rooms with carbon dioxide concentrations greater than or equal to threshold A is greater than 50%, the control unit controls the heat exchange device 100 to operate in ventilation mode. Similarly, the control unit controls the operation mode to remain unchanged until the room air quality detection unit obtains a carbon dioxide concentration less than threshold A, and then forces the operation to continue for a duration of T4. Within duration T4, the room air quality detection unit obtains the carbon dioxide concentration once every duration T5. When the carbon dioxide concentration obtained one time is still greater than threshold A, the T4 time is recalculated. Until all carbon dioxide concentration parameters obtained within duration T4 are less than threshold A, the control unit will control the operation mode of the heat exchange device 100 according to the dust particle concentration parameters.

[0122] If the number of rooms with carbon dioxide concentrations greater than or equal to threshold A among all target rooms is less than 50%, the control unit will make another determination based on the dust particle concentration parameter. If the number of rooms with dust particle concentrations greater than or equal to threshold C is greater than 50%, the control unit will control the heat exchange device 100 to alternate between ventilation mode and internal circulation mode, with the internal circulation mode operating for duration T1 and then the ventilation mode operating for duration T2. ​​If the number of rooms with dust particle concentrations greater than or equal to threshold C is less than 50%, the control unit will control the heat exchange device 100 to operate in ventilation mode.

[0123] So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0124] It should be noted that any implementations not shown or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the above definitions of the various components are not limited to the specific structures and shapes described in the embodiments, and can be easily modified or replaced by those skilled in the art.

[0125] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat exchange device comprising: ontology; An air quality detection unit, used to obtain air quality parameters; An air volume regulating valve, used to control the air volume passing through the air volume regulating valve; an air supply unit, configured to draw air into the heat exchange device and discharge the air from the heat exchange device; Control Department; It is characterized in that the control unit is configured to control the opening and closing angle of the air volume regulating valve according to the air quality parameters obtained by the air quality detection unit.

2. The heat exchange device according to claim 1, characterized in that The air quality detection unit includes: a room air quality detection unit and a body air quality detection unit; The room air quality detection unit is used to obtain the air quality parameters of the target room; The main body air quality detection unit is used to obtain the quality parameters of the air entering the heat exchange device; The control unit determines whether the air quality parameter of the target room can be obtained from the room air quality detection unit; When the control unit can obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the opening and closing angles of the air volume control valve according to the air quality parameters obtained by the room air quality detection unit; When the control unit cannot obtain the air quality parameters of the target room from the room air quality detection unit, the control unit controls the opening and closing angles of the air volume control valve according to the air quality parameters obtained by the main body air quality detection unit.

3. The heat exchange device according to claim 2, characterized in that The control unit controls the operation mode of the heat exchange device according to the air quality parameters obtained by the main body air quality detection unit.

4. The heat exchange device according to claim 3, characterized in that The operating modes of the heat exchange device include: ventilation mode; When the carbon dioxide concentration obtained by the main body air quality detection unit is greater than or equal to a threshold value A, the control unit controls the heat exchange device to operate in a ventilation mode; When the carbon dioxide concentration obtained by the main body air quality detection unit is less than a threshold value A, the control unit controls the operation mode of the heat exchange device according to the dust particle concentration obtained by the main body air quality detection unit.

5. The heat exchange device according to claim 4, characterized in that The operation modes of the heat exchange device also include: internal circulation mode; When the dust particle concentration obtained by the main body air quality detection unit is greater than or equal to a threshold value B, the control unit controls the heat exchange device to alternately operate the ventilation mode and the internal circulation mode.

6. The heat exchange device according to claim 5, characterized in that When the heat exchange device alternately operates in the ventilation mode and the internal circulation mode, after the internal circulation mode operates for a time period T1, the ventilation mode operates for a time period T2, and T1 is the same as T2.

7. The heat exchange device according to claim 6, characterized in that The operation modes of the heat exchange device also include: mixed air mode; When the dust particle concentration obtained by the main body air quality detection unit is less than a threshold value B and greater than or equal to a threshold value C, the control unit controls the heat exchange device to operate the mixed air mode; When the dust particle concentration obtained by the main body air quality detection unit is less than a threshold value C, the control unit controls the heat exchange device to operate in the ventilation mode.

8. The heat exchange device according to claim 7, characterized in that Also includes: In the mixed air mode, when the dust particle concentration obtained by the main body air quality detection unit is greater than or equal to a threshold value B, the control unit controls the heat exchange device to alternately operate the ventilation mode and the internal circulation mode; When the dust particle concentration obtained by the main air quality detection unit is less than the threshold value C, after continuing to run the mixed air mode for T3, when the dust particle concentration obtained again is less than the threshold value C, the control unit controls the heat exchange device to switch to the ventilation mode.

9. The heat exchange device according to claim 7, characterized in that The threshold C has at least three levels; The value of the threshold B is 1.5 times the value of the threshold C.

10. The heat exchange device according to claim 2, characterized in that The air volume regulating valve comprises: a blade and a driving member; The driving member drives the blade to rotate, thereby adjusting the angle of the blade; According to the rotation angle of the blade, the air volume regulating valve has a first opening angle and a second opening angle, and the first opening angle is greater than the second opening angle.

11. The heat exchange device according to claim 10, characterized in that The air volume regulating valve also has a third opening angle; When the control unit cannot obtain the air quality parameter of the target room from the room air quality detection unit, the control unit controls the air volume control valve to be adjusted to a third opening angle, which is smaller than the second opening angle.

12. The heat exchange device according to claim 10, characterized in that When the carbon dioxide concentration obtained by the room air quality detection unit is greater than or equal to a threshold value A, the control unit controls the air volume regulating valve to open to a first opening angle; When the carbon dioxide concentration obtained by the room air quality detection unit is less than a threshold value A, the control unit controls the opening and closing angles of the air volume regulating valve according to the parameter of the dust particle concentration.

13. The heat exchange device according to claim 12, characterized in that When the dust particle concentration obtained by the room air quality detection unit is greater than or equal to a threshold value C, the control unit controls the air volume regulating valve to open to a first opening angle; When the dust particle concentration obtained by the room air quality detection unit is less than a threshold value C, the control unit controls the air volume adjustment valve to open to a second opening angle.

14. The heat exchange device according to claim 12, characterized in that In a state where the control unit cannot obtain the air quality parameters of the target room from the room air quality detection unit, when the carbon dioxide concentration obtained by the main body air quality detection unit is greater than or equal to a threshold value A, or when the dust particle concentration obtained by the main body air quality detection unit is greater than or equal to a threshold value C, the control unit controls the air volume control valve to open to a first opening angle; When the dust particle concentration obtained by the main body air quality detection unit is less than a threshold value C, the control unit controls the air volume regulating valve to open to a second opening angle.

15. The heat exchange device according to claim 12 or 14, characterized in that: Also includes: When the carbon dioxide concentration obtained by the main air quality detection unit or the room air quality detection unit is greater than or equal to a threshold value A, the control unit controls the air volume regulating valve or the operation mode to remain unchanged until the carbon dioxide concentration obtained by the main air quality detection unit or the room air quality detection unit is less than the threshold value A, and then continues to operate for a duration T4.

16. The heat exchange device according to claim 15, characterized in that During the time period T4, when the acquired carbon dioxide concentration is greater than or equal to the threshold value A, the time period T4 is restarted.

17. The heat exchange device according to claim 11, characterized in that The control unit further includes a preset air volume value corresponding to the blade opening angle set by the air volume regulating valve; The air volume output value that can be delivered to each target room at different gears is calculated based on the preset air volume value and the number of the air volume regulating valves.

18. The heat exchange device according to claim 17, characterized in that The control unit calculates the total output air volume according to the air volume output value of the target room at each gear and the number of target rooms corresponding to the air volume output value at each gear.

19. The heat exchange device according to claim 18, characterized in that The control unit controls the air supply unit to select the required output gear according to the total output air volume.

20. The heat exchange device according to claim 11, characterized in that Also includes: Centralized air supply mode that can centrally supply air to one of the target rooms; After receiving the selection feedback of the centralized air supply mode, the control unit controls the air volume regulating valve of the corresponding target room to open to a first opening angle, and the air supply unit outputs a maximum air volume.

21. The heat exchange device according to claim 20, characterized in that After receiving the selection feedback of the centralized air supply mode, the control unit controls the air volume control valves in the open state corresponding to other rooms except the target room to switch to a third opening angle.

22. The heat exchange device according to claim 2, characterized in that After the control unit obtains the number of target rooms according to the number of the room air quality detection units, it controls the operation mode of the heat exchange device according to the ratio of the air quality parameters of the room air quality detection units and the number of rooms.

23. The heat exchange device according to claim 22, characterized in that When the ratio of the air quality parameters obtained from the room air quality detection unit to the number of rooms is greater than 50%, the control unit controls the heat exchange device to switch the operation mode.

24. A heat exchange system, characterized in that: include: The heat exchange device according to any one of claims 1 to 23; A wind box connected to the heat exchange device through a pipeline; The air volume regulating valve is arranged on the air distribution box.

25. A method for controlling a heat exchange device, characterized in that: include: Obtain air quality parameters from the air quality detection unit; Based on the air quality parameters, the opening and closing angles of the air volume control valve are controlled.

26. The control method according to claim 25, characterized in that: The method of obtaining the air quality parameters of the air quality detection unit includes: obtaining the air quality parameters of the air quality detection unit of the main body, Determine whether the air quality parameters of the room air quality detection unit can be obtained; The controlling the opening and closing of the air volume regulating valve based on the air quality parameter includes: when the air quality parameter of the room air quality detection unit can be obtained, controlling the opening and closing angle of the air volume regulating valve according to the air quality parameter of the room air quality detection unit, When the air quality parameters of the room air quality detection unit cannot be obtained, the opening and closing angles of the air volume regulating valve are controlled according to the air quality parameters of the main body air quality detection unit.

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