Fresh air filter joint, fresh air pipe and fresh air air conditioner

Abstract

The application relates to the manufacturing field of air conditioners, and particularly provides a fresh air filtering joint, a fresh air pipe and a fresh air air conditioner. In order to solve the problem of air flow backflow when the fresh air air conditioner is not used, the application provides a fresh air filtering joint, which comprises a tubular main body, the tubular main body comprises an air inlet and an air outlet; a rotating shaft is fixedly arranged in the tubular main body; first and second check vanes are pivotally arranged between the rotating shaft and the inner side of the tubular main body and are arranged on the two sides of the rotating shaft; at least one rebounding member for preventing the first and second check vanes from being opened is arranged on the rotating shaft; and an electromagnetic tappet is arranged on the rotating shaft, the electromagnetic tappet is arranged on the side of the first and second check vanes close to the air outlet, and the electromagnetic tappet is arranged to be in an extended state in a power-off state and in a retracted state in a power-on state. Therefore, the application can solve the problem of air flow backflow when the fresh air air conditioner is not used.

Description

Technical Field

[0001] The invention relates to the field of air conditioner manufacturing, and specifically provides a fresh air filter joint, a fresh air duct and a fresh air air conditioner. Background Art

[0002] With rapid economic development, people's living standards are improving, and their expectations for indoor temperature and humidity are also increasing. Air conditioners have become an essential household appliance. As people's expectations for quality of life continue to rise, so too has their expectations for indoor air quality. Fresh air air conditioners have therefore become a part of daily life. The indoor unit of a fresh air air conditioner exchanges fresh air with the outside air, injecting a moderate amount of comfortable fresh air into the previously confined space, restoring the carbon and oxygen balance of the indoor air. This air conditioner avoids the sudden influx of high-temperature outdoor air, as occurs with open windows, which can cause temperature imbalances in the air conditioning system and lead to significant energy losses. Because fresh air air conditioners incorporate a fresh air duct into the room, strong winds from outside can cause a backflow noise in the duct when the air conditioner is turned off or the fresh air function is not in use. This erratic whistling sound creates a negative user experience and can also negatively impact one's mental state.

[0003] Accordingly, the art requires a new fresh air filter connector, a fresh air duct, and a fresh air air conditioner to solve the problem of air backflow when the existing fresh air air conditioner is not in use. Summary of the Invention

[0004] The present invention aims to provide a fresh air filter connector, a fresh air duct and a fresh air air conditioner to solve the problem of air backflow when the existing fresh air air conditioner is not in use.

[0005] In a first aspect, the present invention provides a fresh air filter connector, characterized in that the fresh air filter connector includes a tubular body, and the tubular body includes an air inlet and an air outlet;

[0006] A rotating shaft is fixedly provided inside the tubular body, and a first check blade and a second check blade are pivotally provided between the rotating shaft and the inner side of the tubular body and are provided on both sides of the rotating shaft;

[0007] At least one rebound component for preventing the first check blade and the second check blade from opening is also provided on the rotating shaft;

[0008] An electromagnetic tappet is also provided on the rotating shaft. The electromagnetic tappet is provided on the side of the first check blade and the second check blade close to the air outlet, and the electromagnetic tappet is configured to be in an extended state when the power is off and in a retracted state when the power is on.

[0009] In the preferred technical solution of the above-mentioned fresh air filter connector, the rebound component is a torsion spring, the torsion spring is sleeved on the rotating shaft, and one end of the torsion spring is connected to the first check blade, and the other end is connected to the second check blade.

[0010] In the preferred technical solution of the above-mentioned fresh air filter joint, a filter screen is further provided in the tubular body on the side of the rotating shaft close to the air inlet.

[0011] In the preferred technical solution of the above-mentioned fresh air filter connector, a gasket is further provided between the inner wall of the tubular body and the first check blade and the second check blade.

[0012] In the preferred technical solution of the above-mentioned fresh air filter connector, the first check blade and the second check blade are further provided with thrust bevels on the side close to the air outlet, and the electromagnetic tappet is configured to abut against the thrust bevel in the extended state and to disengage from the thrust bevel in the retracted state. Correspondingly, a stop protrusion is further provided on the inner wall of the tubular body on the side of the first check blade and the second check blade close to the air inlet.

[0013] In the preferred technical solution of the above-mentioned fresh air filter connector, turbulent protrusions are further provided on the inner wall of the tubular body on the side of the first check blade and the second check blade close to the air inlet.

[0014] In the preferred technical solution of the above-mentioned fresh air filter connector, the number of the turbulence protrusions is multiple, and the protrusion heights of the turbulence protrusions are inconsistent.

[0015] In the preferred technical solution of the above-mentioned fresh air filter connector, a return flow slope inclined toward the first check blade and the second check blade is further provided on the inner wall of the tubular body on the side of the first check blade and the second check blade close to the air outlet; and / or,

[0016] The first non-return blade and the second non-return blade are made of polypropylene, polypropylene or metal.

[0017] The present invention also provides a fresh air duct, on which the fresh air filter connector described in any one of the above technical solutions is provided.

[0018] The present invention also provides a fresh air air conditioner, which is provided with a fresh air filter connector according to any one of the above technical solutions.

[0019] Those skilled in the art will understand that the fresh air filter connector in the technical solution of the present invention includes a tubular body, which includes an air inlet and an air outlet; a rotating shaft is fixedly arranged inside the tubular body, and the first check blade and the second check blade are pivotally arranged between the rotating shaft and the inner side of the tubular body, and are arranged on both sides of the rotating shaft; at least one rebound component for preventing the first check blade and the second check blade from opening is also arranged on the rotating shaft; an electromagnetic tappet is also arranged on the rotating shaft, and the electromagnetic tappet is arranged on the side of the first check blade and the second check blade close to the air outlet, and the electromagnetic tappet is arranged to be in an extended state when the power is off, and in a retracted state when the power is on.

[0020] When the above technical solution is adopted, the present invention arranges a non-return blade and a rotating shaft in the fresh air duct, and the non-return blade can rotate around the rotating shaft. When the fresh air air conditioner is in working state, fresh air needs to enter the room from the fresh air duct. At this time, the non-return blade rotates around the rotating shaft to open, allowing fresh air to pass through. At the same time, a rebound component is also provided on the non-return blade. When the fresh air air conditioner does not need to work, or when the fresh air air conditioner is in a non-working state due to external factors such as power outages, in order to prevent strong airflow from flowing back into the room in strong winds outdoors, the rebound component will rebound the non-return blade to a state of closing the fresh air channel. However, relying solely on the rebound component may not be able to continuously and completely rebound the non-return blade to a closed state under certain special circumstances. In order to understand the state of the fresh air channel, the present invention accordingly provides an electromagnetic tappet, which is configured to be in an extended state when the power is off and in a retracted state when the power is on. When the fresh air air conditioner is in working state, the electromagnetic tappet retracts, and when the fresh air air conditioner is in non-working state, the electromagnetic tappet extends. The auxiliary rebound component completely fixes the non-return blade in a position capable of sealing the fresh air channel. At the same time, once there is a power outage in the user's house, the fresh air air conditioner itself cannot be used. At this time, the electromagnetic tappet directly blocks the air path, avoiding the bad situation of air being blown into the room after the power is cut off when the outdoor environment is in harsh conditions of strong winds. The above technical solution can solve the problem of air backflow when the existing fresh air air conditioner is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The preferred embodiment of the fresh air filter connector of the present invention is described below with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic structural diagram of the first embodiment of the fresh air filter connector of the present invention when the check blade closes the fresh air channel;

[0023] Figure 2 It is a schematic top view of the cross-sectional structure of the first embodiment of the fresh air filter connector of the present invention when the check blade closes the fresh air channel.

[0024] List of reference numerals:

[0025] 1-Fresh air filter connector;

[0026] 11- tubular body;

[0027] 111 - air inlet; 112 - air outlet; 113 - rotating shaft; 114 - first check blade; 115 - second check blade; 116 - rebound member; 117 - electromagnetic tappet; 118 - filter; 119 - gasket;

[0028] 1110-stop protrusion; 1111-turbulence protrusion; 1112-return slope;

[0029] 1141-Thrust ramp;

[0030] 1161-Torsion spring. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. For example, although the description is based on a circulating fan, the present invention can obviously adopt various other circulating fans as long as the circulating fan has the effect of accelerating air flow.

[0032] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that a device or component must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections 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 the present invention based on specific circumstances.

[0034] Reference Figure 1 and Figure 2 , the fresh air filter connector (1) of the present invention is described.

[0035] First embodiment:

[0036] like Figure 1 and Figure 2 As shown, in order to solve the problem of air flow backflow when the existing fresh air air conditioner is not in use, the present invention provides a fresh air filter connector (1), the fresh air filter connector (1) includes a tubular body (11), the tubular body (11) includes an air inlet (111) and an air outlet (112);

[0037] A rotating shaft (113) is fixedly arranged inside the tubular body (11), and a first check blade (114) and a second check blade (115) are pivotally arranged between the rotating shaft (113) and the inner side of the tubular body (11), and are arranged on both sides of the rotating shaft (113);

[0038] At least one resilient member (116) is also provided on the rotating shaft (113) for preventing the first non-return blade (114) and the second non-return blade (115) from opening.

[0039] An electromagnetic tappet (117) is also provided on the rotating shaft (113). The electromagnetic tappet (117) is provided on a side of the first check blade (114) and the second check blade (115) close to the air outlet (112). The electromagnetic tappet (117) is configured to be in an extended state in a power-off state and in a retracted state in a power-on state.

[0040] The advantage of the above-mentioned setting method is that by arranging a non-return blade and a rotating shaft (113) in the fresh air duct, the non-return blade can rotate around the rotating shaft (113). When the fresh air air conditioner is in working state, fresh air needs to enter the room from the fresh air duct. At this time, the non-return blade rotates around the rotating shaft (113) to open, allowing fresh air to pass through. At the same time, a rebound component (116) is also provided on the non-return blade. When the fresh air air conditioner does not need to work, or when the fresh air air conditioner is in a non-working state due to external factors such as power failure, in order to prevent strong air flow from flowing back into the room in strong winds outdoors, the rebound component (116) will rebound the non-return blade to a state of closing the fresh air channel. However, relying solely on the rebound component (116) may not be able to continuously and completely rebound the non-return blade to a state of closing the fresh air channel under certain special circumstances. state, so the present invention accordingly provides an electromagnetic tappet (117), which is configured to be in an extended state in a power-off state and in a retracted state in a power-on state. When the fresh air air conditioner is in a working state, the electromagnetic tappet (117) retracts, and when the fresh air air conditioner is in a non-working state, the electromagnetic tappet (117) extends the auxiliary rebound component (116) to completely fix the non-return blade in a position capable of sealing the fresh air channel. At the same time, once the power is cut off in the user's house, the fresh air air conditioner itself cannot be used. At this time, the electromagnetic tappet (117) directly blocks the air path, avoiding the bad situation of air being blown into the room after the power is cut off in the harsh conditions of strong winds in the outdoor environment. The above technical solution can solve the problem of air flow backflow when the existing fresh air air conditioner is not in use.

[0041] Further reference below Figure 1 and Figure 2 , the rebound component (116) of the fresh air filter connector (1) is described in detail.

[0042] like Figure 1 and Figure 2 As shown, in a possible embodiment, the rebound member (116) is a torsion spring (1161), which is sleeved on the rotating shaft (113), and one end of the torsion spring (1161) is connected to the first check blade (114), and the other end is connected to the second check blade (115).

[0043] The advantage of the above-mentioned setting method is that: by setting the torsion spring (1161) on the rotating shaft (113), and the two ends of the torsion spring (1161) are respectively connected to the two check blades. Since the torsion spring (1161) itself has elasticity, in the natural state, the two ends of the torsion spring (1161) will generate a certain thrust toward the object they touch. If a torsion spring (1161) with appropriate elasticity is selected, when the fresh air air conditioner is not working, the torsion spring (1161) will push the two check blades to a closed state. This structure can prevent the outdoor air flow from flowing back into the fresh air duct when the fresh air air conditioner is not working, which causes inconvenience to the user. At the same time, when the fresh air air conditioner is working, a strong suction force will be generated, and this suction force is sufficient to overcome the elastic force of the torsion spring (1161) and make the two check blades open, which will not affect the operation of the fresh air air conditioner.

[0044] like Figure 2 As shown, in a possible embodiment, a filter screen (118) is further provided in the tubular body (11) on the side of the rotating shaft (113) close to the air inlet (111).

[0045] The advantage of the above arrangement is that by setting a filter (118) in the fresh air duct, the fresh air air conditioner can exchange indoor air with outdoor fresh air while ensuring that the outdoor air does not carry a large amount of dust and impurities into the room and cause damage to the indoor environment.

[0046] like Figure 1 、 Figure 2 As shown, in a possible real-time manner, a gasket (119) is further provided between the inner wall of the tubular body (11) and the first non-return blade (114) and the second non-return blade (115).

[0047] The advantages of the above arrangement are that: by arranging the gasket (119) between the tubular body (11) and the first check blade (114) and the second check blade (115), the sealing performance of the fresh air duct is increased; when the fresh air air conditioner is not working, the sealing gasket and the first check blade (114) and the second check blade (115) cooperate with each other to more thoroughly prevent the outdoor air flow from flowing back into the room; at the same time, the addition of the sealing gasket can also protect the first check blade (114) and the second check blade (115), thereby reducing their wear and extending their service life.

[0048] like Figure 1 、 2As shown, the first check blade (114) and the second check blade (115) are further provided with a thrust bevel (1141) on the side close to the air outlet (112), and the electromagnetic tappet (117) is configured to abut against the thrust bevel (1141) in the extended state and to disengage from the thrust bevel (1141) in the retracted state. Correspondingly, a stop protrusion (1110) is further provided on the inner wall of the tubular body (11) on the side of the first check blade (114) and the second check blade (115) close to the air inlet (111).

[0049] The advantage of the above-mentioned arrangement is that: a thrust bevel (1141) structure is provided on the first check blade (114) and the second check blade (115); when the electromagnetic tappet (117) is extended in a power-off state and abuts against the provided thrust bevel (1141), the thrust of the check blade by the electromagnetic tappet (117) can be divided into two directions of force, one being a force perpendicular to the direction of the check blade, and the other being a force parallel to the direction of the check blade. The force perpendicular to the direction of the check blade will make the check blade close more tightly, and accordingly, the tubular body (11) on one side of the air inlet (111) is provided. A stop protrusion (1110) is provided on the inner wall. When the non-return blade is subjected to a force in a vertical direction of the electromagnetic tappet (117), it can abut against the stop protrusion (1110). The non-return blade is clamped by the electromagnetic tappet and the stop protrusion, making the non-return blade more stable. Compared with a planar structure without a thrust bevel (1141), the thrust bevel (1141) is provided so that the non-return blade is subjected to forces in two directions, so that the electromagnetic tappet (117) can always keep in contact with the non-return blade, thereby avoiding problems such as loose sealing and noise caused by loose contact between the electromagnetic tappet (117) and the non-return blade.

[0050] like Figure 1 、 Figure 2 As shown, in a possible real-time manner, a turbulence protrusion (1111) is further provided on the inner wall of the tubular body (11) on the side of the first check blade (114) and the second check blade (115) close to the air inlet (111).

[0051] The advantage of the above-mentioned setting method is that the turbulent protrusion (1111) can only disrupt the air flow direction attached to the inner wall of the tubular body (11). Under normal circumstances, since the flow rate of the air flowing into the inner wall of the tubular body (11) is the same as the flow rate of the air poured in from the outside, the turbulent protrusion (1111) is set on the inner wall of the tubular body (11) on the side close to the air inlet (111). When the fresh air air conditioner is not working, when there is a strong air flow outside flowing into the fresh air duct, the turbulent protrusion (1111) will disrupt the air flow attached to the inner wall of the tubular body (11). The airflow on the inner wall appropriately reduces the impact strength of the outdoor airflow on the ends of the first check blade (114) and the second check blade (115), thereby reducing the overall torque of the first check blade (114) and the second check blade (115). The air in the middle part has a smaller torque itself, and it is necessary to ensure sufficient airflow during normal operation, so it is not blocked. Therefore, the overall structure can ensure that the check blade can complete the sealing of the fresh air duct with a smaller torque and can ensure the circulation of sufficient airflow.

[0052] like Figure 1 、 Figure 2 As shown, in a possible real-time manner, the number of turbulence protrusions (1111) is multiple, and the protrusion heights of the turbulence protrusions (1111) are inconsistent.

[0053] The advantage of the above-mentioned setting method is that by setting multiple groups of turbulent protrusions (1111) with different protrusion heights, the backflow of outdoor wind can be blocked in stages. Due to the different heights of the protrusions, the original trajectory of the outdoor wind can be disrupted, which can significantly weaken the trend of outdoor natural wind backflowing into the room. At the same time, since the power of the fresh air air conditioner is relatively large, the fresh air function will not be significantly affected after the air conditioner is started, and fresh air can still be provided normally.

[0054] like Figure 1 、 Figure 2 As shown, a return flow slope (1112) inclined toward the first check blade (114) and the second check blade (115) is further provided on the inner wall of the tubular body (11) on the side of the first check blade (114) and the second check blade (115) close to the air outlet (112); and / or, the first check blade (114) and the second check blade (115) are made of polypropylene, polypropylene or metal.

[0055] The advantage of the above-mentioned arrangement is that, by arranging a return flow slope (1112) on the inner wall on one side of the air outlet (112), after the outdoor airflow breaks through the edge of the non-return blade, it will be blocked by the return flow slope (1112) and its flow direction will be changed, so that part of the airflow is blown toward the air inlet (111), playing a part of the reaction force and reducing the size of the opening blown open. In this way, the subsequent outdoor wind will be disturbed by the wind in front whose direction has been changed, thereby disrupting the airflow entering the fresh air duct and further reducing its influence.

[0056] In summary, in this embodiment, by arranging a non-return blade and a rotating shaft (113) in the fresh air duct, the non-return blade can rotate around the rotating shaft (113). When the fresh air air conditioner is in working state, fresh air needs to enter the room from the fresh air duct. At this time, the non-return blade rotates around the rotating shaft (113) to open, allowing fresh air to pass through. At the same time, a rebound component (116) is also provided on the non-return blade. When the fresh air air conditioner does not need to work, or when the fresh air air conditioner is in a non-working state due to external factors such as power failure, in order to prevent strong airflow from flowing back into the room in strong winds outdoors, the rebound component (116) will rebound the non-return blade to a state of closing the fresh air channel. However, relying solely on the rebound component (116) may not be able to continuously and completely rebound the non-return blade to a state of closing the fresh air channel under certain special circumstances. state, so the present invention accordingly provides an electromagnetic tappet (117), which is configured to be in an extended state in a power-off state and in a retracted state in a power-on state. When the fresh air air conditioner is in a working state, the electromagnetic tappet (117) retracts, and when the fresh air air conditioner is in a non-working state, the electromagnetic tappet (117) extends the auxiliary rebound component (116) to completely fix the non-return blade in a position capable of sealing the fresh air channel. At the same time, once the power is cut off in the user's house, the fresh air air conditioner itself cannot be used. At this time, the electromagnetic tappet (117) directly blocks the air path, avoiding the bad situation of air being blown into the room after the power is cut off in the harsh conditions of strong winds in the outdoor environment. The above technical solution can solve the problem of air flow backflow when the existing fresh air air conditioner is not in use.

[0057] It should be noted that the above-mentioned embodiments are only used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above-mentioned structure so that the present invention can be applied to more specific application scenarios.

[0058] For example, the rebound member (116) can be a torsion spring (1161) or a reset rod reset device. In addition, the rebound member (116) also includes other commonly used devices and structures that can achieve this rebound effect.

[0059] In addition, the present invention also provides a fresh air duct, characterized in that a fresh air filter connector (1) according to any one of the above technical solutions is provided on the fresh air duct.

[0060] In addition, the present invention also provides a fresh air air conditioner, characterized in that the fresh air air conditioner is provided with a fresh air filter connector (1) according to any one of the above technical solutions.

[0061] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A fresh air filter connector, characterized in that: The fresh air filter connector includes a tubular body, and the tubular body includes an air inlet and an air outlet; A rotating shaft is fixedly provided inside the tubular body, and a first check blade and a second check blade are pivotally provided between the rotating shaft and the inner side of the tubular body and are provided on both sides of the rotating shaft; At least one rebound component for preventing the first check blade and the second check blade from opening is also provided on the rotating shaft; An electromagnetic tappet is also provided on the rotating shaft. The electromagnetic tappet is provided on a side of the first check blade and the second check blade close to the air outlet, and the electromagnetic tappet is configured to be in an extended state in a power-off state and in a retracted state in a power-on state. Turbulence protrusions are further provided on the inner wall of the tubular body on the side of the first check blade and the second check blade close to the air inlet, the number of the turbulence protrusions is multiple, and the protrusion heights of the turbulence protrusions are inconsistent; A return flow slope inclined toward the first check blade and the second check blade is further provided on the inner wall of the tubular body on the side of the first check blade and the second check blade close to the air outlet; The first check blade and the second check blade are further provided with thrust slopes on the side surfaces close to the air outlet, and the electromagnetic tappet is arranged to abut against the thrust slopes in an extended state and to be separated from the thrust slopes in a retracted state.

2. The fresh air filter connector according to claim 1, characterized in that: The resilient component is a torsion spring, which is sleeved on the rotating shaft, and one end of the torsion spring is connected to the first non-return blade, and the other end of the torsion spring is connected to the second non-return blade.

3. The fresh air filter connector according to claim 1, characterized in that: A filter is also provided in the tubular body on a side of the rotating shaft close to the air inlet.

4. The fresh air filter connector according to claim 1, characterized in that: A gasket is further provided between the inner wall of the tubular body and the first and second check blades.

5. The fresh air filter connector according to claim 1, characterized in that: A stop protrusion is further provided on the inner wall of the tubular body on the side of the first non-return blade and the second non-return blade close to the air inlet.

6. The fresh air filter connector according to claim 1, characterized in that: The first non-return blade and the second non-return blade are made of polypropylene, polypropylene or metal.

7. A new air duct, characterized in that: The fresh air duct is provided with a fresh air filter connector according to any one of claims 1 to 6.

8. A fresh air air conditioner, characterized in that: The fresh air air conditioner is provided with a fresh air filter connector according to any one of claims 1 to 6.

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