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, the rotating shaft is arranged to deviate from the center of the cross section of the tubular main body, the rotating shaft divides the cross section of the tubular main body into two halves, a blocking plate is fixedly arranged on the half with smaller area, a check blade is also pivotally arranged on the rotating shaft, the check blade is arranged to be capable of blocking the pipeline of the half with larger area in a closed state, a rebound component for preventing the check blade from being opened is also arranged on the rotating shaft, the check blade is made of metal, and an electromagnet is further arranged on the inner wall of the tubular main body on the side of the check blade close to the air inlet. 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 demands for a better quality of life continue to rise, users are increasingly concerned about indoor air quality, while pursuing a comfortable indoor temperature. As a result, fresh air air conditioners have become widely used in daily life. Fresh air air conditioners' indoor units exchange fresh air with the outside air, injecting a moderate amount of comfortable fresh air into previously confined spaces, restoring indoor air quality to a carbon-oxygen balance. This air conditioner avoids the sudden influx of high-temperature outdoor air, as occurs with open windows, which can cause temperature imbalances and significant energy losses. Because fresh air air conditioners incorporate a fresh air duct into the room, strong winds can cause 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 a person'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, the tubular body includes an air inlet and an air outlet;

[0006] A rotating shaft is fixedly provided inside the tubular body, and is arranged offset from the center of the cross section of the tubular body. The rotating shaft divides the cross section of the tubular body into two halves. A blocking plate is fixedly provided on the half with a smaller area. A non-return blade is also pivotally provided on the rotating shaft. The non-return blade is configured to block the pipeline of the half with a larger area of ​​the tubular body in a closed state.

[0007] A rebound component for preventing the non-return blade from opening is also provided on the rotating shaft;

[0008] The non-return blade is made of metal, and an electromagnet is correspondingly provided on the inner wall of the tubular body on the side of the non-return blade close to the air inlet.

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

[0010] In the preferred technical solution of the above-mentioned fresh air filter connector, a filter screen is further provided in the tubular main 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 non-return blade.

[0012] In the preferred technical solution of the above-mentioned fresh air filter connector, a thrust bevel is further provided on the side of the check blade close to the air outlet, and an electromagnetic tappet is correspondingly provided on the inner wall of the tubular body. 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. 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.

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

[0014] In the preferred technical solution of the above-mentioned fresh air filter joint, there are multiple turbulence protrusions, 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 check blade is further provided on the inner wall of the tubular body on the side of the check blade close to the air outlet.

[0016] The present invention also provides a fresh air duct, on which is provided a fresh air filter connector according to any one of the above technical solutions.

[0017] 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.

[0018] It is understood by those skilled in the art 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;

[0019] A rotating shaft is fixedly provided inside the tubular body, and is arranged offset from the center of the cross section of the tubular body. The rotating shaft divides the cross section of the tubular body into two halves. A blocking plate is fixedly provided on the half with a smaller area. A non-return blade is also pivotally provided on the rotating shaft. The non-return blade is configured to block the pipeline of the half with a larger area of ​​the tubular body in a closed state.

[0020] A rebound component for preventing the non-return blade from opening is also provided on the rotating shaft;

[0021] The non-return blade is made of metal, and an electromagnet is correspondingly provided on the inner wall of the tubular body on the side of the non-return blade close to the air inlet.

[0022] 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, the 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 the 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 the fresh air air conditioner is in a non-working state due to external factors such as power outage, 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 in some special In special circumstances, it may not be possible to continuously and completely rebound the check blade to the state of closing the fresh air channel. Therefore, the present invention correspondingly arranges an electromagnet on the inner wall of the tubular main body on the side of the check blade close to the air outlet. The electromagnet is configured to be in an adsorption state when the fresh air air conditioner is not working. At this time, the electromagnet adsorbs the check blade and assists the rebound component to completely fix the check blade in a position that can block the fresh air channel. When the fresh air air conditioner is in working state, the electromagnet has no adsorption force, and the check blade can be opened freely to allow outdoor fresh air to pass through. The above technical solution can solve the problem of air flow backflow when the existing fresh air air conditioner is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiment of the fresh air filter connector of the present invention is described below with reference to the accompanying drawings, in which:

[0024] 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;

[0025] 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.

[0026] List of reference numerals:

[0027] 1-Fresh air filter connector;

[0028] 11- tubular body;

[0029] 111 - air inlet; 112 - air outlet; 113 - rotating shaft; 114 - check blade; 115 - blocking plate; 116 - rebound member; 117 - electromagnet; 118 - filter screen; 119 - gasket; 1110 - electromagnetic tappet; 1111 - turbulence protrusion; 1112 - return flow slope;

[0030] 1141-Thrust ramp;

[0031] 1161-Torsion spring. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Reference Figure 1 and Figure 2 , the fresh air filter connector (1) of the present invention is described.

[0036] First embodiment:

[0037] 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), and the tubular body (11) includes an air inlet (111) and an air outlet (112);

[0038] A rotating shaft (113) is fixedly arranged inside the tubular body (11). The rotating shaft (113) is arranged away from the center of the cross section of the tubular body (11). The rotating shaft (113) divides the cross section of the tubular body (11) into two halves. A blocking plate (115) is fixedly arranged on the half with a smaller area. A non-return blade (114) is also pivotally arranged on the rotating shaft (113). The non-return blade (114) is arranged to block the pipeline of the half with a larger area of ​​the tubular body (11) in a closed state.

[0039] A resilient member (116) is also provided on the rotating shaft (113) for preventing the non-return blade (114) from opening.

[0040] The non-return blade (114) is made of metal, and an electromagnet (117) is correspondingly provided on the inner wall of the tubular body (11) on the side of the non-return blade (114) close to the air inlet (111).

[0041] The advantage of the above arrangement is that: when the above technical solution is adopted, the present invention arranges the check blade (114) and the rotating shaft (113) in the fresh air duct, and the check blade (114) The non-return blade (114) can rotate around the rotating shaft (113). When the fresh air air conditioner is in operation, fresh air needs to enter the room from the fresh air duct. At this time, the non-return blade (114) 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 (114). When the fresh air air conditioner does not need to work, or when the fresh air air conditioner is in a non-operating state due to external factors such as power failure, in order to prevent strong air flow from flowing back into the room under strong winds, the rebound component (116) will rebound the non-return blade (114) 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 (114) to a state of closing the fresh air channel under certain special circumstances. Therefore, the present invention accordingly provides an electromagnet (117) on the inner wall of the tubular body (11) on the side of the non-return blade (114) close to the air outlet (112). The electromagnet (117) The electromagnet (117) is configured to be in an adsorption state when the fresh air air conditioner is not in operation. At this time, the electromagnet (117) adsorbs the check blade (114) and assists the rebound component (116) to completely fix the check blade (114) in a position capable of sealing the fresh air passage. When the fresh air air conditioner is in operation, the electromagnet (117) has no adsorption force, and the check blade (114) can be opened freely, allowing outdoor fresh air to pass through. The above technical solution can solve the problem of air flow backflow when the existing fresh air air conditioner is not in use.

[0042] Further reference below Figure 1 and Figure 2 , the rebound component (116) of the fresh air filter connector (1) of the present invention is described in detail.

[0043] 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 blocking plate (115), and the other end is connected to the check blade (114).

[0044] 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 sealing plate (115) and the non-return blade (114), since the torsion spring (1161) itself has elasticity, in a 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 elastic force of the torsion spring (1161) itself will push the non-return blade (114) 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, causing 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 non-return blade (114) open, which will not affect the operation of the fresh air air conditioner.

[0045] 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).

[0046] The advantage of the above-mentioned setting method is that by arranging the filter (118) in the fresh air duct, the fresh air air conditioner can exchange the indoor air with the 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. In addition, by arranging the filter (118) in the fresh air duct, the non-return structure of the fresh air filter joint (1) can also be protected, so that the non-return structure of the fresh air filter joint (1) will not fail to function due to dust accumulation.

[0047] like Figure 1 、 Figure 2 As shown, in one possible embodiment, a gasket (119) is further provided between the inner wall of the tubular body (11) and the check blade (114).

[0048] The advantages of the above-mentioned setting method are: by arranging a gasket (119) between the tubular body (11) and the non-return blade (114), the sealing of the fresh air duct is increased. When the fresh air air conditioner is not working, the gasket (119) and the non-return blade (114) cooperate with each other to more thoroughly prevent the outdoor air flow from flowing back into the room. At the same time, when there is a strong air flow blowing into the fresh air duct from the outside, the addition of the gasket (119) can also significantly reduce the vibration caused by the strong wind, avoiding the fresh air duct from generating obvious noise when there is a strong wind outdoors, which has a bad impact on the user's experience. In addition, the addition of the gasket (119) can also protect the non-return blade (114), reduce its wear, extend its service life, and avoid unnecessary costs during the user's use.

[0049] like Figure 1 、 2 As shown, in a possible real-time mode, the check blade (114) is further provided with a thrust bevel (1141) on the side near the air outlet (112), and correspondingly, an electromagnetic tappet (1110) is further provided on the inner wall of the tubular body (11), and the electromagnetic tappet (1110) is configured to be in an extended state in a power-off state and in a retracted state in a power-on state, and the electromagnetic tappet (1110) is configured to abut against the thrust bevel (1141) in the extended state and to be separated from the thrust bevel (1141) in the retracted state.

[0050] The advantage of the above-mentioned setting method is that: a thrust bevel (1141) structure is set on the non-return blade (114). When the electromagnetic tappet (1110) is extended in the power-off state and abuts against the set thrust bevel (1141), the thrust of the non-return blade (114) by the electromagnetic tappet (1110) can be divided into two directions of force, one is a force perpendicular to the direction of the non-return blade (114), and the other is a force parallel to the direction of the non-return blade (114). The force perpendicular to the direction of the non-return blade (114) will make the non-return blade (114) always fit on the electromagnet (117), so that it is closed more tightly, and the non-return blade (114) is more stable. Compared with the planar structure without the thrust bevel (1141), the thrust of the non-return blade (114) is set. 1141) causes the check blade (114) to be subjected to forces in two directions, so that the electromagnetic tappet (1110) can always keep in contact with the check blade (114), thereby avoiding problems such as poor sealing and noise caused by the loose contact between the electromagnetic tappet (1110) and the check blade (114). At the same time, since the electromagnetic tappet (1110) is configured to be in an extended state when the power is off, once the power is off in the user's house, the fresh air air conditioner itself cannot be used. At this time, the electromagnetic tappet (1110) directly blocks the air path, thereby avoiding the bad situation of air being blown into the room after the power is off when the outdoor environment is in a harsh condition of strong wind.

[0051] 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 check blade (114) close to the air inlet (111).

[0052] 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 a strong air flow flows into the fresh air duct from the outside, the turbulent protrusion (1111) will disrupt the air flow attached to the inner wall, so that the impact strength of the outdoor air flow on the end of the check blade (114) is appropriately reduced, thereby reducing the overall torque of the check blade (114). The air in the middle part has a smaller torque itself, and it is necessary to ensure sufficient air flow in during normal operation, so it is not blocked. Therefore, the overall structure can ensure that the check blade (114) The fresh air duct can be sealed with less torque, which reduces energy consumption and ensures sufficient airflow without affecting the main functions of the fresh air air conditioner.

[0053] 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.

[0054] 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 into the room.

[0055] like Figure 1 、 Figure 2 As shown, a return flow slope (1112) inclined toward the check blade (114) is further provided on the inner wall of the tubular body (11) on the side of the check blade (114) close to the air outlet (112).

[0056] The advantage of the above-mentioned setting method is that by setting a return flow slope (1112) on the inner wall on one side of the air outlet (112), after the outdoor air flow breaks through the edge of the non-return blade (114), it will be blocked by the return flow slope (1112) and its flow direction will be changed, so that part of the air flow will be 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 air flow entering the fresh air duct and further reducing its influence.

[0057] In summary, in this embodiment, by arranging a non-return blade (114) and a rotating shaft (113) in the fresh air duct, the non-return blade (114) 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 (114) 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 (114). When the fresh air air conditioner does not need to work, or when the fresh 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 under strong winds outdoors, the rebound component (116) will retract the non-return blade (114). The air conditioner is configured to rebound to a state where the fresh air passage is closed. However, relying solely on the rebound component (116), under certain special circumstances, the check blade (114) may not be able to rebound completely to a state where the fresh air passage is closed. Therefore, the present invention accordingly provides an electromagnetic tappet (1110) and an electromagnet (117). The electromagnetic tappet (1110) 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 a working state, the electromagnetic tappet (1110) retracts to allow fresh air to pass through. When the fresh air air conditioner is in a non-working state, the electromagnetic tappet (1110) extends the auxiliary rebound component (116) to close the check blade (114). It is completely fixed in a position where it can block the fresh air passage. 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 strut (1110) (117) directly blocks the air passage, avoiding the bad situation that air is still blown into the room after the power is cut off in the room due to the harsh conditions of strong winds in the outdoor environment. In addition, an electromagnet (117) is also provided on the inner wall of the tubular body (11) in the direction of the air inlet (111) of the check blade (114). The electromagnet (117) is configured to adsorb the check blade (114) when the fresh air air conditioner is not working to close the fresh air passage, and not adsorb the check blade (114) when the fresh air air conditioner is working to allow it to open freely. The above technical solution can solve the problem of air flow backflow when the existing fresh air air conditioner is not in use.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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, the rotating shaft being arranged offset from the center of the cross section of the tubular body. The rotating shaft divides the cross section of the tubular body into two halves, a blocking plate is fixedly provided on the half with a smaller area, and a non-return blade is also pivotally provided on the rotating shaft. The non-return blade is configured to block the pipeline of the half with a larger area of ​​the tubular body in a closed state; A rebound component for preventing the non-return blade from opening is also provided on the rotating shaft; The non-return blade is made of metal, and an electromagnet is correspondingly provided on the inner wall of the tubular body on the side of the non-return blade close to the air inlet. The non-return blade is also provided with a thrust inclined surface on the side close to the air outlet. An electromagnetic tappet is correspondingly provided on the inner wall of the tubular body, 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. The electromagnetic tappet is configured to abut against the thrust inclined surface in the extended state and keep the non-return blade in contact with the electromagnet, and to be separated from the thrust inclined surface in the retracted state. A turbulence protrusion is further provided on the inner wall of the tubular body on the side of the check blade close to the air inlet, wherein 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 check blade is further provided on the inner wall of the tubular body on the side of the check blade close to the air outlet.

2. The fresh air filter connector according to claim 1, characterized in that: The rebound component is a torsion spring, which is sleeved on the rotating shaft, and one end of the torsion spring is connected to the blocking plate, and the other end is connected to the 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 check blade.

5. 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 4.

6. 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 4.

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