Air treatment device

Abstract

The utility model discloses an air treatment device, and belongs to the technical field of air treatment. The air treatment device comprises a shell, an air inlet and an air outlet, the air valve assembly is connected to the shell corresponding to the air opening, and the air valve assembly comprises a flange frame which is provided with a through part, and the through part is communicated with the air opening; the swing leaf is connected in the through part, the swing leaf can rotate between an opening position and a closing position, when the swing leaf is in the opening position, air can circulate through the through part, and when the swing leaf is in the closing position, the through part is closed; the electric switch identification device is used for identifying the position of the swing leaf, and comprises an elastic component which is provided with a first end and a second end which are opposite to each other, and the second end of the elastic component is connected with the swing leaf; the electric switch body is connected to the shell or the flange frame, and the electric switch body is connected with the first end of the elastic component and used for detecting the length of the elastic component. The air treatment device has the function of recognizing the position of the swing page.

Description

Technical Field

[0001] The present application relates to the technical field of air treatment, and in particular to an air treatment device. Background Art

[0002] An air handling unit, such as an air conditioner or heat exchanger, is a device used to regulate the temperature, humidity, cleanliness or air flow of indoor air.

[0003] Some air handling units have a fresh air function, which is to introduce outdoor air (fresh air) into the room. Most of these air handling units will use air valve assemblies. The air valve assembly is used to close the air outlet on the air handling unit to prevent the unit from shutting down or entering fresh air when there is severe wind and rain outdoors, causing abnormal noise, condensation, etc.

[0004] The damper assembly consists of a swing blade and a motor. The motor drives the swing blade to close or open the air vent. If the motor is damaged, the swing blade cannot open or close properly, resulting in poor air handling performance. Existing damper assemblies do not have a function to detect the position of the swing blade, resulting in the unit being unable to determine whether the swing blade is open or closed properly. Utility Model Content

[0005] The present application provides an air handling device having the function of detecting the position of a flap to identify whether the unit is normal.

[0006] In one aspect of the present application, an air handling device comprises: a shell having an air outlet provided thereon for circulating air; a fan arranged in the shell for driving air to flow into or out of the shell through the air outlet; an air valve assembly connected to the shell corresponding to the air outlet, the air valve assembly comprising: a flange frame having a through portion provided thereon, the through portion being connected to the air outlet; a swing leaf connected in the through portion, the swing leaf being rotatable between an open position and a closed position, wherein air can flow through the through portion in the open position and the through portion is closed in the closed position; an electric switch identification device for identifying the position of the swing leaf, the electric switch identification device comprising: an elastic component having a first end and a second end relative to each other, the second end of the elastic component being connected to the swing leaf to follow the extension and retraction of the swing leaf; an electric switch body connected to the shell or the flange frame, the electric switch body being connected to the first end of the elastic component for detecting the length of the elastic component to identify the position of the swing leaf.

[0007] In the present application, the electric switch identification device includes an elastic component connected to the swing leaf of the air valve assembly and an electric switch body connected to the elastic component; when the air valve assembly is opened or closed, the swing leaf rotates, thereby driving the elastic component to expand and contract, and the electric switch body can detect the length of the elastic component to identify the position of the swing leaf. If the length of the elastic component does not change, the position of the swing leaf does not change, and it can be known that the air valve assembly cannot be opened / closed normally.

[0008] In some embodiments, the elastic component includes: a connecting rod connected to the swing leaf; an elastic member made of elastic material, and the elastic member is connected between the electric switch body and the connecting rod.

[0009] In the present application, the elastic component adopts an elastic member to realize expansion and contraction. The elastic component can expand and contract and bend as the swing leaf rotates, and the structure is relatively simple.

[0010] In some embodiments, the connecting rod is hinged to the elastic member.

[0011] In the present application, since the swing leaf rotates when the air valve assembly is opened or closed, the connecting rod is hinged to the elastic member, and the connecting rod can rotate relative to the elastic member, thereby reducing or even avoiding bending deformation of the elastic member, thereby increasing the life of the elastic member.

[0012] In some embodiments, the connecting rod is hinged to the swing leaf.

[0013] In the present application, since the swing leaf rotates when the air valve assembly is opened or closed, the connecting rod is hinged to the swing leaf and the connecting rod can rotate relative to the swing leaf, which can reduce or even avoid bending deformation of the elastic member, thereby increasing the life of the elastic member.

[0014] In some embodiments, a gap exists between the second end of the elastic component and the rotation centerline of the swing leaf.

[0015] If the second end of the elastic member is relatively close to the rotational centerline of the swing leaf, the length change of the elastic member during swing leaf rotation is relatively small, making it difficult to detect the length change of the elastic member when the electric switch body has low recognition accuracy. In this application, a certain distance is provided between the second end of the elastic member and the rotational centerline of the swing leaf, so that the length change of the elastic member during swing leaf rotation is not too small, thereby reducing the accuracy requirements of the electric switch body.

[0016] In some embodiments, when the swing leaf is in the 90° open position, the first end of the elastic component and the second end of the elastic component are located on the same side of the swing leaf.

[0017] If the first and second ends of the elastic component are located on different sides of the swing leaf, the elastic component will bend significantly during the swing leaf's rotation, which will reduce the service life of the elastic component. If the first and second ends of the elastic component are located on the same side of the swing leaf, the bending deformation of the elastic component can be reduced.

[0018] In some embodiments, a support portion extending toward the air outlet is provided on the wall of the shell, and the electric switch body is connected to the support portion.

[0019] In some embodiments, the air valve assembly includes: a motor connected to the flange frame, the output shaft of the motor is connected to the swing leaf to drive the swing leaf to rotate; when the air valve assembly is opened or closed, the electric switch identification device identifies that the length of the elastic component does not change, then the motor is abnormal.

[0020] In this application, when the air valve assembly is opened / closed, the length of the elastic component of the electric switch identification device does not change, which means that the swing leaf does not rotate, indicating that the motor is damaged and fails to drive the swing leaf to rotate normally.

[0021] In some embodiments, the air valve assembly includes: a motor connected to the flange frame, the output shaft of the motor is connected to the swing leaf to drive the swing leaf to rotate; a controller, electrically connected to the motor and the electric switch identification device respectively, and the controller is used to control the rotation of the motor according to the position of the swing leaf identified by the electric switch identification device.

[0022] In the present application, the controller controls the rotation of the motor according to the position of the swing leaf, thereby achieving the purpose of correcting the valve opening.

[0023] On the other hand, an air handling device includes: an air valve assembly located on an air flow path, the air valve assembly including: a flange frame provided with a through portion for circulating air; a swing leaf connected to the through portion, the swing leaf being rotatable between an open position and a closed position, wherein air can flow through the through portion in the open position and the through portion is closed in the closed position; an electric switch identification device for identifying the position of the swing leaf, the electric switch identification device including: an elastic component having a first end and a second end relative to each other, the second end of the elastic component being connected to the swing leaf; an electric switch body fixed relative to the flange frame, the electric switch body being connected to the first end of the elastic component, for detecting the length of the elastic component to identify the position of the swing leaf.

[0024] In this application, the electric switch identification device includes an elastic component connected to the swing leaf of the air valve assembly and an electric switch body connected to the elastic component; when the air valve assembly is opened or closed, the swing leaf rotates, thereby driving the elastic component to expand and contract, and the electric switch body can detect the length of the elastic component to identify the position of the swing leaf. If the position of the swing leaf does not change, it can be known that the air valve assembly cannot be opened / closed normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 shows a schematic diagram of an air handling device according to some embodiments;

[0026] Figures 2 to 4 A partial cross-sectional view of an air handling device at a damper assembly according to some embodiments is shown;

[0027] Figure 5 A perspective view of a damper assembly and an electric switch identification device in an air handling device according to some embodiments is shown;

[0028] Figure 6 illustrates a side view of a damper assembly in an air handling unit according to some embodiments;

[0029] Figure 7 and Figure 8 A perspective view of a swing leaf and electric switch identification device in an air handling device according to some embodiments is shown;

[0030] Figure 9 An exploded view of an electric switch identification device in an air handling unit according to some embodiments is shown;

[0031] Figure 10 Illustration of an explosion of a damper assembly in an air handling unit according to some embodiments Figure 1 ;

[0032] Figure 11 Illustration of an explosion of a damper assembly in an air handling unit according to some embodiments Figure 2 .

[0033] In the above figures, 100, electric switch identification device; 110, electric switch body; 120, elastic component; 121, spring; 122, connecting rod; 123, connecting block;

[0034] 200, housing; 200a, air outlet; 201, fresh air outlet; 202, air supply outlet; 203, return air outlet; 204, exhaust outlet; 205, fresh air duct; 206, air supply duct; 207, return air duct; 208, exhaust duct; 209, support portion; 210, heat exchange core; 220, air supply fan; 230, exhaust fan;

[0035] 300, air valve assembly; 310, flange frame; 311, circulation cylinder; 312, flange plate; 3121, screw mounting hole; 313, transition portion; 314, through portion; 315, mounting column; 320, swing leaf; 320a, closed position; 320b, open position; 320c, first position; 321, connecting portion; 324, swing leaf body; 325, first swing leaf shaft; 326, second swing leaf shaft; 330, motor; 340, motor cover; 350, mounting seat; 351, mounting shaft. DETAILED DESCRIPTION

[0036] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

[0037] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] An air handling unit (AHU) is a device used to regulate the temperature, humidity, cleanliness, or airflow of indoor air. It can be an air conditioner, fresh air blower, or heat exchanger.

[0041] The following is an introduction using the air handling unit as an example:

[0042] The full heat exchanger is a highly efficient and energy-saving heat recovery device that pre-cools or preheats the incoming fresh air by recovering the waste heat from the exhaust.

[0043] The operating principle is as follows: When the product is operating, indoor exhaust air and outdoor fresh air flow through the heat exchange core. Due to the temperature difference and vapor partial pressure difference between the two airflows, a full heat exchange process occurs in the heat exchange core. In summer operation, the fresh air receives cooling from the air conditioner exhaust air, lowering its temperature. At the same time, it is dried by the conditioned air, reducing its moisture content. In winter operation, the fresh air receives heat from the air conditioner exhaust air, raising its temperature. In this way, through the full heat exchange process in the heat exchange core, the fresh air recovers energy from the air conditioner exhaust air.

[0044] See also Figure 1 The air treatment device according to the embodiment of the present application includes a housing 200 , a heat exchange core 210 , a blower 220 and an exhaust fan 230 .

[0045] The shell 200 forms the general appearance of the air handling device and is roughly in the shape of a rectangular parallelepiped. A fresh air inlet 201 , an air supply outlet 202 , a return air inlet 203 and an air exhaust outlet 204 are provided on the shell 200 .

[0046] The heat exchange core 210 is disposed in the housing 200 and is used to achieve heat exchange between indoor exhaust air and outdoor fresh air.

[0047] A fresh air duct and an exhaust air duct are formed in the shell 200, and the fresh air duct and the exhaust air duct are respectively connected to the heat exchange core 210.

[0048] The fresh air duct connects the fresh air inlet 201 and the air supply outlet 202 for circulating outdoor fresh air; the exhaust air duct connects the return air inlet 203 and the exhaust air outlet 204 for circulating indoor air.

[0049] Specifically, the fresh air duct includes a fresh air channel 205 and an air supply channel 206 , and the exhaust air duct includes a return air channel 207 and an exhaust air channel 208 .

[0050] The fresh air passage 205 is a passage from the fresh air port 201 to the side of the heat exchange core 210. The air supply passage 206 is a passage from the side of the heat exchange core 210 to the air supply port 202.

[0051] The return air passage 207 is a passage from the return air port 203 to the side of the heat exchange core 210. The exhaust air passage 208 is a passage from the side of the heat exchange core 210 to the exhaust air port 204.

[0052] The air supply fan 220 is arranged in the air supply channel 206 corresponding to the air supply outlet 202, and is used to force the outdoor fresh air to flow; the exhaust fan 230 is arranged in the exhaust channel 208 corresponding to the exhaust outlet 204, and is used to force the indoor air to flow.

[0053] When the air handling device is working, under the action of the supply fan 220 and the exhaust fan 230, the indoor air (exhaust air) from the return air outlet 203 flows through the heat exchange core 210 through the return air channel 207, and the outdoor fresh air from the fresh air outlet 201 flows through the heat exchange core 210 through the fresh air channel 205. The two air streams exchange heat at the heat exchange core 210, and the exhaust air after heat exchange is blown toward the exhaust outlet 204 through the exhaust channel 208, and the outdoor fresh air after heat exchange is blown toward the supply air outlet 202 through the supply air channel 206.

[0054] For example, when the air handling device operates in the summer cooling period, the outdoor fresh air obtains cooling energy from the indoor air, causing the temperature to decrease; when the air handling device operates in the winter heating period, the outdoor fresh air obtains heat energy from the indoor air, causing the temperature to increase.

[0055] In this application, the fresh air inlet 201, the air supply inlet 202, the air return inlet 203, and the air exhaust inlet 204 are also referred to as air inlets 200a. The air supply fan 220 and the exhaust fan 230 are also referred to as fans.

[0056] The air vent 200a is used for air circulation, that is, air enters the housing 200 from the air vent 200a or air is discharged from the housing 200 from the air vent 200a. The fan is used to drive the air flow.

[0057] Reference Figures 2 to 4 The air handling device includes a damper assembly 300, which is connected to the housing 200 corresponding to the air outlet 200a. When the damper assembly 300 is closed, the air flow path at the corresponding air outlet 200a is blocked, and when the damper assembly 300 is opened, the air flow path at the corresponding air outlet 200a is connected.

[0058] In other embodiments, the air vent 200a can be connected to the air duct via an air vent flange. When the air duct is extended indoors, the air vent 200a is connected to the indoors; when the air duct is extended outdoors, the air vent 200a is connected to the outdoors. The air valve assembly 300 is disposed in the air duct.

[0059] The air port 200a and the space inside the air duct are both located on the air flow path, and the air valve assembly 300 only needs to be disposed on the air flow path.

[0060] Reference Figure 5 and Figure 6 The damper assembly 300 includes a flange frame 310 . The flange frame 310 forms the overall appearance of the damper assembly 300 .

[0061] The flange frame 310 may include a substantially cylindrical flow tube 311. Air can flow through the flow tube 311, and the sidewall of the flow tube 311 can be used to connect an air duct, for example, the air duct can be fixed to the flow tube 311 by a clamp or a cable tie.

[0062] The flange frame 310 may include a flange 312. The flange 312 is connected to the flow tube 311. The flange 312 may be in the shape of a rectangular sheet. The flange 312 is used to connect to the housing 200.

[0063] Screw mounting holes 3121 may be provided near the four corners of the flange 312. Screws are passed through the screw mounting holes 3121 of the flange 312 to securely connect the flange 312 to the housing 200. The flange 312 may also be connected to the housing 200 by welding.

[0064] The flange frame 310 may include a transition portion 313. The transition portion 313 connects between the flange 312 and the flow tube 311. The end surface of the transition portion 313 connecting to the flange 312 is rectangular, while the end surface of the transition portion 313 connecting to the flow tube 311 is circular. The cross-section of the transition portion 313, perpendicular to the axis, gradually expands from the flow tube 311 to the flange 312.

[0065] A through portion 314 is provided in the flange frame 310. The through portion 314 axially penetrates the flange frame 310 for air circulation.

[0066] The damper assembly 300 includes a swing leaf 320. The swing leaf 320 is rotatably connected to the through portion 314. The outer shape of the swing leaf 320 is the same as the radial cross section of the through portion 314.

[0067] Combine Figure 2 and Figure 3 The swing leaf 320 can move between a closed position 320a and an open position 320b, wherein the through portion 314 is closed at the closed position 320a, and the through portion 314 is opened at the open position 320b and the angle at which the swing leaf 320 is opened can control the amount of air flowing through the flange frame 310.

[0068] Because the air vent 200a is connected to the through-hole 314, when the swing leaf 320 is in the closed position 320a, the through-hole 314 is closed, and the air vent 200a is closed and no air can flow. When the swing leaf 320 is in the open position 320b, the through-hole 314 is opened, and the air vent 200a is connected, allowing air to flow. Therefore, the air valve assembly 300 can be used to open or close the air vent 200a.

[0069] When the swing leaf 320 is opened at different angles, the amount of air flowing through the damper assembly 300 varies. For example, when the swing leaf 320 is opened at a smaller angle, the amount of air flowing through the damper assembly 300 is smaller; when the swing leaf 320 is opened at a larger angle, the amount of air flowing through the damper assembly 300 is larger.

[0070] Reference Figure 5 、 Figures 7 to 9The air handling device includes an electric switch identification device 100, which is connected to the swing leaf 320 and is used to identify the position of the swing leaf 320. By identifying the position of the swing leaf 320, it can be known whether the air valve assembly 300 is abnormal.

[0071] The electric switch identification device 100 includes an electric switch body 110. The electric switch body 110 has a function of measuring the length of the elastic member 120 described below. The electric switch body 110 can be connected to the housing 200.

[0072] A pressure sensor is installed within the electric switch body 110 and is connected to the elastic component 120. As the length of the elastic component 120 changes, the force exerted by the elastic component 120 on the pressure sensor changes. The force exerted by the elastic component 120 on the pressure sensor is proportional to the length of the elastic component 120. Therefore, the pressure value detected by the pressure sensor can be converted into the length of the elastic component 120.

[0073] The electric switch identification device 100 includes an elastic component 120 . The elastic component 120 has a first end and a second end at opposite ends. The first end of the elastic component 120 is connected to the electric switch body 110 , and the second end of the elastic component 120 is connected to the swing leaf 320 .

[0074] At least a portion of the elastic component 120 is made of elastic material, and can deform such as stretching and bending when subjected to external force. The elastic component 120 can restore its shape after the external force disappears.

[0075] Since the elastic component 120 is connected to the swing leaf 320 , when the swing leaf 320 rotates, the elastic component 120 will deform along with the swing leaf 320 , and the distance between the first end and the second end of the elastic component 120 will change.

[0076] It should be noted that, in this application, the length of the elastic component 120 is also referred to as the distance between the first end and the second end of the elastic component 120 .

[0077] The electric switch body 110 identifies the position of the swing leaf 320 based on the detected length of the elastic member 120. The air handling device can determine whether the swing leaf 320 is normally opened or closed based on the position information of the swing leaf 320.

[0078] When the swing leaf 320 of the damper assembly 300 is opened / closed, the electric switch body 110 detects that the length of the elastic component 120 changes, which indicates that the swing leaf 320 is opened / closed normally.

[0079] When the swing leaf 320 of the damper assembly 300 is opened / closed, the electric switch body 110 detects that the length of the elastic component 120 has not changed, which means that the swing leaf 320 has failed to open / close normally.

[0080] In some embodiments, reference Figures 2 to 4 A support portion 209 extending into the air outlet 200 a may be provided on the side wall of the housing 200 , and the electric switch body 110 is fixedly connected to the support portion 209 .

[0081] The support portion 209 may be formed by extending from the inner wall of the air outlet 200a to the inner space of the air outlet 200a. The support portion 209 may be integrally formed with the wall of the housing 200 forming the air outlet 200a.

[0082] In other embodiments, the support portion 209 is an independent plate, and the end of the support portion 209 is fixed to the wall of the housing 200 by welding or fasteners such as screws.

[0083] The electric switch body 110 may be connected to the support portion 209 by fasteners such as screws.

[0084] In some embodiments, the elastic component 120 includes an elastic member made of elastic material, such as a spring, rubber, or a bellows.

[0085] The following description takes the elastic member as spring 121 as an example:

[0086] Reference Figures 7 to 9 The spring 121 is connected to the electric switch body 110. The spring 121 can be fixed to the pressure sensor of the electric switch body 110 via a spring seat. The spring seat and the pressure sensor are connected by a fastener such as a screw. In other embodiments, the spring 121 is connected to the electric switch body 110 by pressing.

[0087] The elastic component 120 includes a connecting rod 122 . One end of the connecting rod 122 is connected to an end of the spring 121 away from the electric switch body 110 , and the other end of the connecting rod 122 is connected to the swing leaf 320 .

[0088] In some embodiments, a connecting block 123 is provided at the end of the spring 121 connected to the connecting rod 122. The spring 121 can be connected to the connecting block 123 by welding or pressing.

[0089] The connecting block 123 can be hinged to the connecting rod 122. The connecting block 123 and the connecting rod 122 can be hinged by a pin. The connecting rod 122 has a U-shaped groove running through it, and the end of the connecting block 123 is inserted into the U-shaped groove.

[0090] Assuming that the rotation centerline A of the swing leaf 320 is vertical, the U-shaped groove passes through the connecting rod 122 horizontally, and the pin is vertically inserted into the connecting rod 122 and the connecting block 123.

[0091] The rotation centerline A of the swing leaf 320 is vertical, so the swing leaf 320 rotates horizontally around the rotation centerline A. The connecting rod 122 rotates horizontally around the pin relative to the connecting block 123.

[0092] During the rotation of the swing leaf 320 , the connecting rod 122 rotates relative to the connecting block 123 , which can reduce the bending deformation of the spring 121 , and the spring 121 mainly undergoes telescopic deformation.

[0093] In some embodiments, the connecting rod 122 and the swing leaf 320 can be hinged. The swing leaf 320 and the connecting rod 122 can be hinged via a pin. The swing leaf 320 is provided with an outwardly protruding connecting portion 321, and the connecting rod 122 has a through-going U-shaped groove, and the connecting portion 321 is inserted into the U-shaped groove.

[0094] Assuming that the rotation centerline A of the swing leaf 320 is vertical, the U-shaped groove passes through the connecting rod 122 horizontally, and the pin is vertically inserted into the connecting rod 122 and the connecting portion 321.

[0095] The rotation centerline A of the swing leaf 320 is vertical, so the swing leaf 320 rotates horizontally around the rotation centerline A. The connecting portion 321 rotates horizontally relative to the connecting rod 122 around the pin.

[0096] During the rotation of the swing leaf 320 , the connecting rod 122 rotates, which can reduce the bending deformation of the spring 121 , and the spring 121 mainly undergoes telescopic deformation.

[0097] According to an embodiment of the present application, when projected onto the surface of the swing leaf 320 , the connection position of the elastic component 120 on the swing leaf 320 (the second end of the elastic component 120 ) does not intersect with the rotation centerline A.

[0098] Since the rotation center line A does not change position during the rotation of the swing leaf 320, if the connection position of the elastic component 120 on the swing leaf 320 intersects with the rotation center line A, the elastic component 120 will not change in length or will only change very slightly in length, which is insufficient to identify the position of the swing leaf 320.

[0099] Specifically, with the rotation center line A of the swing leaf 320 as a dividing line, the swing leaf 320 includes a first portion and a second portion located on both sides of the dividing line.

[0100] Taking the rotation center line A as the vertical direction as an example, the first part and the second part are arranged horizontally.

[0101] Assume that when the damper assembly 300 is opened, the first portion rotates in a direction away from the housing 200 , and the second portion rotates in a direction close to the housing 200 .

[0102] The elastic component 120 is connected to the first portion, and the connecting portion 321 on the swing leaf 320 is located on the first portion.

[0103] Because the elastic component 120 is located on the side of the swing leaf 320 that is closest to the housing 200, when the damper assembly 300 is opened, the first portion of the swing leaf 320 rotates away from the housing 200, causing the elastic component 120 to be stretched by the first portion. The greater the opening of the damper assembly 300, the greater the angle of rotation of the swing leaf 320 relative to the closed position, and the longer the elastic component 120.

[0104] In other embodiments, the elastic member 120 may be connected to the second portion. When the damper assembly 300 is opened, the second portion of the swing leaf 320 rotates toward the housing 200, shortening the length of the elastic member 120. The greater the opening of the damper assembly 300, the greater the angle of rotation of the swing leaf 320 relative to the closed position, and the shorter the length of the elastic member 120.

[0105] In some embodiments of the present application, there is a distance d between the connection position of the elastic component 120 on the swing leaf 320 and the rotation center line A, and d is not less than 1 / 4 of the radius of the swing leaf 320 .

[0106] Combine Figure 3 , projected on a plane perpendicular to the rotation center line A, the pendulum leaf 320 rotates from the closed position 320a to the open position 320b, and the axial distance from any point Q on the pendulum leaf 320 from the closed position 320a to the open position 320b is the length change value.

[0107] Since the length change of point Q decreases the closer it is to the rotational centerline A, if d is too small, the second end of elastic component 120 will be closer to the rotational centerline A, and the length change of elastic component 120 will be relatively small. This can make it difficult to detect the length change of elastic component 120 when the recognition accuracy of electric switch body 110 is low. Therefore, in this application, d is set to be no less than 1 / 4 of the radius of swing leaf 320. This allows the second end of elastic component 120 to be farther from the rotational centerline A, thereby reducing the recognition accuracy requirements for electric switch body 110.

[0108] In some embodiments of the present application, reference is made to Figure 4 In the figure, the valve opening of the air valve assembly 300 is 90°, and the swing leaf 320 rotates 90° from the closed position 320a; projected on a plane perpendicular to the axis of the flange frame 310, the first end of the elastic component 120 and the second end of the elastic component 120 are located on the same side of the swing leaf 320.

[0109] If the first end and the second end of the elastic component 120 are located on different sides of the swing leaf 320 , the spring 121 will be greatly bent and deformed during the rotation of the swing leaf 320 , which will reduce the service life of the spring 121 .

[0110] According to the embodiments of this application, referring to Figure 10 The air valve assembly 300 includes a driving member for providing power to the outside. The driving member is fixedly connected to the flange frame 310 and can serve as a driving source for the swing leaf 320 to rotate the swing leaf 320.

[0111] The driving member may be a motor 330 , and the output shaft of the motor 330 is connected to the swing leaf 320 , thereby driving the swing leaf 320 to rotate.

[0112] A protruding mounting post 315 is provided on the outer side wall of the flange frame 310. The motor 330 is fixed to the mounting post 315 by screws.

[0113] The damper assembly 300 includes a motor cover 340. The motor cover 340 covers the motor 330 and is connected to the flange frame 310, thereby concealing the motor 330. The motor cover 340 protects the motor 330 from being easily affected by the external environment when it is exposed.

[0114] Combine Figure 7 The swing leaf 320 includes a swing leaf body 324. The swing leaf body 324 is in the shape of a disc.

[0115] The swing leaf 320 includes a first swing leaf shaft 325 , which is formed by extending radially outward from a circumferential portion of the swing leaf body 324 .

[0116] The first swing leaf shaft 325 is provided with a mounting groove, and the output shaft of the motor 330 passes through the side wall of the flange frame 310 and is inserted into the mounting groove of the first swing leaf shaft 325 .

[0117] The swing leaf 320 includes a second swing leaf shaft 326, the axis of which coincides with the rotation centerline A. The second swing leaf shaft 326 and the first swing leaf shaft 325 are located at opposite ends of the same diameter of the swing leaf body 324. The second swing leaf shaft 326 is provided with a mounting groove.

[0118] Combine Figure 11 The damper assembly 300 includes a mounting base 350. The mounting base 350 is connected to the outer wall of the flange frame 310 in correspondence with the second swing leaf shaft 326. A mounting shaft 351 is provided on the mounting base 350. The mounting shaft 351 is inserted into the mounting groove of the second swing leaf shaft 326 by passing through the side wall of the flange frame 310.

[0119] The air handling device includes a controller for controlling the operation of the motor 330 or sending a fault signal to the outside according to the position of the swing leaf 320 identified by the electric switch identification device 100.

[0120] The air handling device includes a memory for storing programs and data related to the operation of the air handling device.

[0121] In order to store various information, the memory may be implemented by at least one of a non-volatile memory (such as a cache, a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), and a flash memory), a volatile memory (such as a random access memory (RAM)), or a storage medium such as a hard disk drive (HDD) and a CD-ROM, but is not limited thereto.

[0122] According to an embodiment, the corresponding relationship between the valve opening and the number of steps of the motor 330 may be stored in the memory.

[0123] When the controller receives a specific valve opening instruction, for example, the received valve opening is 75%, the number of steps of the motor 330 forward (or reverse) can be determined based on the 75% valve opening, and the motor 330 can be controlled to rotate the corresponding number of steps.

[0124] According to an embodiment, the corresponding relationship between the valve opening and the preset length of the elastic component 120 may be stored in the memory.

[0125] When, at a certain valve opening of the swing leaf 320, the actual length of the elastic component 120 detected by the electric switch identification device 100 is inconsistent with the preset length of the elastic component 120 corresponding to the stored valve opening, the unit can know that the swing leaf 320 is not in the correct position; when the actual length of the elastic component 120 detected by the electric switch identification device 100 is consistent with the preset length of the elastic component 120 corresponding to the stored opening, the unit can know that the swing leaf 320 is in the correct position.

[0126] The air handling device of this application has the function of correcting the valve opening:

[0127] The controller may control the motor to rotate forward or reverse based on the difference between the actual length of the elastic member 120 detected by the electric switch identification device 100 and the preset length, so as to correct the valve opening.

[0128] For example, taking the 75% valve opening instruction as an example, if the electric switch identification device 100 detects that the actual length of the elastic component 120 is smaller than the stored preset length for 75% valve opening, the controller controls the motor to continue forward rotation. If the electric switch identification device 100 detects that the actual length of the elastic component 120 is larger than the stored preset length for 75% valve opening, the controller controls the motor to reverse rotation, ultimately correcting the valve opening to 75%.

[0129] As described above, according to the embodiments of the present application, the electric switch identification device 100 includes an elastic component 120 connected to the swing leaf 320 of the damper assembly 300, and an electric switch body 110 connected to the elastic component 120. The electric switch body 110 identifies the position of the swing leaf 320 based on the detected length of the elastic component 120. Based on the position information of the swing leaf 320, the air handling device can determine whether the swing leaf 320 is normally open or closed.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0131] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air treatment device, characterized in that: include: a shell, on which air vents are provided for circulating air; a fan, disposed in the housing, for driving air to flow into or out of the housing through the air vent; An air valve assembly is connected to the housing corresponding to the air outlet, and the air valve assembly includes: A flange frame, on which a through portion is provided, the through portion being communicated with the air outlet; a swing leaf connected to the through-hole, the swing leaf being rotatable between an open position and a closed position, wherein air can flow through the through-hole in the open position and the through-hole is closed in the closed position; an electric switch identification device for identifying the position of the swing leaf, the electric switch identification device comprising: an elastic member having a first end and a second end opposite to each other, the second end of the elastic member being connected to the swing leaf; The electric switch body is connected to the housing or the flange frame. The electric switch body is connected to the first end of the elastic component and is used to detect the length of the elastic component to identify the position of the swing leaf.

2. The air treatment device according to claim 1, characterized in that The elastic component includes: A connecting rod connected to the swing leaf; The elastic member is made of elastic material and is connected between the electric switch body and the connecting rod.

3. The air treatment device according to claim 2, characterized in that The connecting rod is hinged to the elastic member.

4. The air treatment device according to claim 2, characterized in that The connecting rod is hinged to the swing leaf.

5. The air treatment device according to claim 1, characterized in that There is a gap between the second end of the elastic component and the rotation center line of the swing leaf.

6. The air treatment device according to claim 1, characterized in that When the swing leaf is in a 90° open position, the first end of the elastic component and the second end of the elastic component are located on the same side of the swing leaf.

7. The air treatment device according to claim 1, characterized in that A support portion extending toward the air outlet is provided on the wall of the shell, and the electric switch body is connected to the support portion.

8. The air treatment device according to claim 1, characterized in that The air valve assembly includes: a motor connected to the flange frame, wherein the output shaft of the motor is connected to the swing leaf to drive the swing leaf to rotate; When the air valve assembly is opened or closed, the electric switch body detects that the length of the elastic component does not change, and the motor is abnormal.

9. The air treatment device according to claim 1, characterized in that The air valve assembly includes: a motor connected to the flange frame, wherein the output shaft of the motor is connected to the swing leaf to drive the swing leaf to rotate; The controller is electrically connected to the motor and the electric switch identification device respectively, and is used to control the rotation of the motor according to the position of the swing leaf identified by the electric switch identification device.

10. An air treatment device for treating air, characterized in that: The air treatment device comprises: The air valve assembly is located on the air flow path, and the air valve assembly includes: A flange frame is provided with a through portion for air circulation; a swing leaf connected to the through-hole, the swing leaf being rotatable between an open position and a closed position, wherein air can flow through the through-hole in the open position and the through-hole is closed in the closed position; an electric switch identification device for identifying the position of the swing leaf, the electric switch identification device comprising: an elastic member having a first end and a second end opposite to each other, the second end of the elastic member being connected to the swing leaf; The electric switch body is fixed relative to the flange frame and is connected to the first end of the elastic component for detecting the length of the elastic component to identify the position of the swing leaf.

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