Three-way air guide assembly and air conditioning range hood

Abstract

The present invention relates to a three-way air guide assembly and an air-conditioning range hood, comprising a three-way valve body having a mixed exhaust branch pipe, an oil fume intake branch pipe, and an air-conditioning air intake branch pipe, both of which are connected to the mixed exhaust branch pipe; a windshield member located in a space enclosed by the three-way valve body and hinged to the three-way valve body, the windshield member being rotatable relative to the three-way valve between a first position and a second position, wherein the windshield member blocks the air-conditioning air intake branch pipe in the first position, and a ventilation gap is defined between the windshield member and the air-conditioning air intake branch pipe in the second position; a rotation stop member located in the space enclosed by the three-way valve body and connected to the three-way valve body, wherein when the windshield member rotates to the second position, the rotation stop member acts on the windshield member and provides a force to prevent the windshield member from further rotating, and at this time, the windshield member can rotate back to the first position under the action of gravity. Thus, when no air-conditioning air is flowing in the air-conditioning air intake branch pipe, the windshield member can rotate back to the first position under the action of gravity, thereby always ensuring that the windshield member can play a role in preventing backflow.

Description

Technical Field

[0001] The present invention relates to the technical field of oil fume exhaust equipment, in particular to a three-way air guide component and an air-conditioning range hood. Background Art

[0002] An air-conditioning range hood is a device that integrates an air conditioner and a range hood. The air conditioner is used to cool or heat the kitchen, and the range hood is used to extract the kitchen fumes and discharge them to the outside. Generally, when the air conditioner and the range hood are integrated together, they will share a common exhaust passage. The fumes exhausted from the flue and the indoor air sucked in by the air conditioner will converge in this exhaust passage and then be discharged to the outside. The cooling function of the air conditioner is not necessarily used at the same time as the range hood extraction function. Therefore, when the cooling function of the air conditioner is turned off and the range hood extraction function is turned on, there is a possibility that the fumes in the flue will flow back into the channel of the air conditioning system and may eventually flow back into the room. Based on this, a windshield can be set to close the channel for extracting hot air from the air conditioner when the cooling function of the air conditioner is turned off, thus avoiding the backflow of fumes. However, there are still cases where the anti-backflow function fails in actual use. Summary of the Invention

[0003] Aiming at the problem that the anti-backflow function is easy to fail, the present invention proposes a three-way air guide component and an air-conditioning range hood to avoid the failure of the oil fume anti-backflow function.

[0004] A three-way air guide assembly, comprising:

[0005] A three-way valve body, the three-way valve body having a mixed discharge branch pipe, and an oil fume suction branch pipe and an air conditioning air suction branch pipe both connected to the mixed discharge branch pipe;

[0006] a windshield member, the windshield member being located in a space enclosed by the three-way valve body and being hingedly connected to the three-way valve body, the windshield member being rotatable relative to the three-way valve between a first position and a second position, wherein in the first position the windshield member blocks the air-conditioning air intake branch pipe, and in the second position a ventilation gap is defined between the windshield member and the air-conditioning air intake branch pipe, and the air-conditioning air intake branch pipe and the mixed discharge branch pipe are communicated with each other through the ventilation gap;

[0007] A stop member is located in the space enclosed by the three-way valve body and is connected to the three-way valve body. When the wind shield rotates to the second position, the stop member acts on the wind shield and provides a force to prevent it from continuing to rotate, and the wind shield located at the second position can rotate back to the first position under the action of gravity.

[0008] The above solution provides a three-way air guide assembly, wherein the windshield and the stopper are disposed within the space enclosed by the three-way valve body. The windshield can be used to block the air-conditioning air intake branch, thereby preventing oil smoke from the oil smoke intake branch from flowing back into the room through the air-conditioning air intake branch. When it is necessary to connect the air-conditioning air intake branch with the mixed exhaust branch to allow air-conditioning air to be discharged, the windshield can be rotated from the first position to the second position. Ultimately, a ventilation gap is formed between the windshield and the air-conditioning air intake branch, allowing air-conditioning air to flow from the air-conditioning air intake branch into the mixed exhaust branch. The stopper can limit the rotation range of the windshield, preventing it from rotating further after reaching the second position. Consequently, when air-conditioning air is no longer flowing through the air-conditioning air intake branch, the windshield can be rotated back to the first position under the action of gravity, blocking the air-conditioning air intake branch and ensuring that the windshield can always prevent backflow. This avoids the situation where the wind shield rotates too far and cannot return to the first position.

[0009] In one embodiment, the axis of rotation of the wind shield relative to the three-way valve body is a reference axis, and a cross section of the wind shield passing through its own center of gravity and the reference axis is a reference plane. When the wind shield is in the first position, the angle between the reference plane and the horizontal plane passing through the reference axis is 10° to 30°.

[0010] When the wind shield is in the second position, the angle between the reference plane and the horizontal plane is greater than 80°, and when the wind shield is in the second position, the angle between the reference plane and the horizontal plane is less than 90°.

[0011] In one embodiment, when the wind shield is in the second position, the angle between the reference plane and the horizontal plane is 89°.

[0012] In one embodiment, the wind shield is a plate-shaped structure. When the wind shield is located at the first position, the outer ring surface of the wind shield abuts and seals the three-way valve body, thereby cutting off the air-conditioning air intake branch and the mixed exhaust branch.

[0013] In one embodiment, the rotation direction of the wind shield when it rotates from the first position to the second position is a first turn. When the wind shield is rotated to the second position, the wind shield and the stop member are arranged in sequence on the first turn, and the stop member abuts against the wind shield.

[0014] In one embodiment, when the wind shield rotates to the second position, the surface of the anti-rotation member opposite to the wind shield is the first side surface, and the surface of the wind shield facing away from the first side surface is the second side surface. The anti-rotation member is provided with a plurality of oil holes, and the oil holes pass through from the first side surface to the second side surface.

[0015] In one embodiment, the wind shield is located at the outlet of the air-conditioning air intake branch pipe, the position on the mixed exhaust branch pipe that is connected to the air-conditioning air intake branch pipe is the air-conditioning air entry position, the position on the mixed exhaust branch pipe that is connected to the oil fume intake branch pipe is the oil fume entry position, and the air-conditioning entry position is not downstream of the oil fume entry position in the flow direction of the airflow in the mixed exhaust branch pipe.

[0016] In one embodiment, the air-conditioning air inlet position and the oil fume inlet position are at the same position, the oil fume suction branch pipe and the air-conditioning air inlet branch pipe intersect at this position, and the intersection of the oil fume suction branch pipe and the air-conditioning air inlet branch pipe is the installation position, the wind shield is hinged at the installation position, and the anti-rotation member is installed at the installation position.

[0017] An air-conditioned range hood comprises a range hood portion, an air-conditioning system and the above-mentioned three-way air guide assembly, wherein the range hood portion has an oil fume channel, the outlet of which is connected to the inlet of the oil fume suction branch pipe, and the air-conditioning system has an air-conditioning air channel, the outlet of which is connected to the inlet of the air-conditioning air suction branch pipe.

[0018] The above scheme provides an air-conditioning range hood, which adopts the three-way air guide assembly described in any of the above embodiments, so as to ensure that when there is no air-conditioning air flowing in the air-conditioning air intake branch pipe, the wind shield can rotate to the first position under the action of gravity, blocking the air-conditioning air intake branch pipe, and always ensuring that the wind shield can play a role in preventing backflow.

[0019] In one embodiment, the three-way air guide assembly is located above the oil fume duct and the air conditioning air duct, the range hood part also includes a fan, the fan is located in the oil fume duct, and the air conditioning system also includes a heat exchanger, the heat exchanger is located in the air conditioning air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a cross-sectional view of the three-way air guide assembly of this embodiment when the air-conditioning air intake branch pipe is blocked;

[0023] Figure 2 This is a cross-sectional view of the three-way air guide assembly of this embodiment when the air conditioning air intake branch pipe and the mixed air discharge branch pipe are connected;

[0024] Figure 3 Schematic diagram of the structure of the air-conditioning range hood described in this embodiment.

[0025] Description of reference numerals:

[0026] 10. Three-way air guide assembly; 11. Three-way valve body; 111. Mixed exhaust branch; 112. Oil fume suction branch; 113. Air conditioning air suction branch; 12. Wind shield; 121. Ventilation gap; 13. Stop member; 14. Installation position; 20. Air conditioning range hood; 21. Hood part; 211. Oil fume duct; 22. Air conditioning system; 221. Air conditioning air duct. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1 and Figure 2 As shown, in one embodiment, a three-way air guide assembly 10 is provided, comprising:

[0029] The three-way valve body 11 has a mixed exhaust branch pipe 111 and an oil fume suction branch pipe 112 and an air conditioning air suction branch pipe 113 both of which are connected to the mixed exhaust branch pipe 111 .

[0030] The oil smoke intake branch 112 is used to guide the oil smoke into the mixed exhaust branch 111, and the air conditioning air intake branch 113 is used to guide the air conditioning air into the mixed exhaust branch 111. The mixed fluid of the oil smoke and the air conditioning air can continue to flow along the mixed exhaust branch 111. The mixed exhaust branch 111 can be connected to the outside of the room, so that the mixed fluid is discharged to the outside of the room.

[0031] Specifically, the air-conditioning wind may be hot wind generated when the air-conditioning system 22 is in operation, for example, hot wind generated around a condenser when the air-conditioning system 22 is in operation.

[0032] Furthermore, if Figure 1 and Figure 2 As shown, in one embodiment, the three-way air guide assembly 10 further includes a wind shield 12, which is located in the space enclosed by the three-way valve body 11, and the wind shield 12 is hinged to the three-way valve body 11, and the wind shield 12 can rotate between a first position and a second position relative to the three-way valve.

[0033] like Figure 1 As shown, in the first position, the windshield 12 blocks the air conditioning air intake branch 113, blocking the air conditioning air intake branch 113, the mixed exhaust branch 111, and the oil fume intake branch 112. At this point, even if oil fume flows through the oil fume intake branch 112, there is no air conditioning air to be discharged from the air conditioning air intake branch 113, and oil fume cannot enter the air conditioning air intake branch 113, effectively preventing oil fume backflow.

[0034] like Figure 2 As shown, in the second position, a ventilation gap 121 is defined between the wind shield 12 and the air-conditioning air intake branch pipe 113. The air-conditioning air intake branch pipe 113 and the mixed exhaust branch pipe 111 are connected via the ventilation gap 121. At this point, both the oil smoke in the oil smoke intake branch pipe 112 and the air-conditioning air in the air-conditioning air intake branch pipe 113 can flow into the mixed exhaust branch pipe 111.

[0035] Furthermore, if Figure 1 and Figure 2 As shown, in one embodiment, the three-way air guide assembly 10 further includes a rotation stopper 13, the rotation stopper 13 is located in the space surrounded by the three-way valve body 11, and the rotation stopper 13 is connected to the three-way valve body 11. Figure 2 As shown, when the wind shield 12 rotates to the second position, the anti-rotation member 13 acts on the wind shield 12 and provides a force to prevent it from continuing to rotate, and the wind shield 12 located at the second position can rotate back to the first position under the action of gravity.

[0036] Assuming that the direction of rotation of the wind shield 12 when it rotates from the first position to the second position is the first turn, the stop member 13 determines the limit position of the wind shield 12 rotating along the first turn. Even if the stop member 13 rotates to the limit position, i.e., the second position, it can eventually return to the first position under the action of gravity. In other words, assuming that the axis of rotation of the wind shield 12 relative to the three-way valve body 11 is the reference axis, the longitudinal plane passing through the reference axis is the reference longitudinal plane. When the three-way air guide assembly 10 is installed, during the process of the wind shield 12 rotating from the first position along the first turn, no matter where the wind shield 12 stops, the center of gravity of the wind shield 12 is offset to one side of this reference longitudinal plane, and this side is the side of the reference longitudinal plane facing the first position, so that the wind shield 12 can always return to the first position under the action of gravity.

[0037] The above solution provides a three-way air guide assembly 10, in which the windshield 12 and the anti-rotation member 13 are provided in the space enclosed by the three-way valve body 11. The windshield 12 can be used to block the air-conditioning air intake branch 113, thereby preventing the oil smoke in the oil smoke intake branch 112 from flowing back into the room from the air-conditioning air intake branch 113. When it is necessary to connect the air-conditioning air intake branch 113 with the mixed exhaust branch 111 so that the air-conditioning air can be discharged, the windshield 12 can be rotated from the first position to the second position. Finally, the ventilation gap 121 is formed between the windshield 12 and the air-conditioning air intake branch 113, so that the air-conditioning air flows from the air-conditioning air intake branch 113 into the mixed exhaust branch 111. The anti-rotation member 13 can limit the rotation range of the windshield 12, so that the windshield 12 cannot continue to rotate after rotating to the second position. Therefore, when no air-conditioning air is flowing through the air-conditioning air intake branch pipe 113, the wind shield 12 can rotate back to the first position under the action of gravity, blocking the air-conditioning air intake branch pipe 113, thereby ensuring that the wind shield 12 can always play the role of preventing backflow, thereby avoiding the situation where the wind shield 12 rotates too much and cannot return to the first position.

[0038] It should be noted that, based on the fact that when the wind shield 12 rotates to the second position, the wind shield 12 can rotate back to the first position under the action of gravity, it can be understood that the height of the center of gravity of the wind shield 12 in the first position is lower than the height of the center of gravity of the wind shield 12 in the second position.

[0039] Specifically, in some embodiments, the power source for the wind shield 12 to rotate from the first position to the second position can be the thrust provided by the air-conditioning air flowing through the air-conditioning air intake branch pipe 113. When the air-conditioning air is no longer flowing through the air-conditioning air intake branch pipe 113, the aforementioned thrust disappears, and the wind shield 12 rotates back to the first position under the action of gravity.

[0040] By using the thrust of the air conditioning wind to switch from the first position to the second position, and then returning to the second position with the help of its own gravity, the setting of driving parts such as motors can be reduced, and the situation of too many components being set in the three-way valve body to avoid forming too many cleaning dead corners occurs.

[0041] More specifically, Figure 1 As shown, in one embodiment, when the windshield 12 rotates back to the first position, it abuts the three-way valve body 11 and blocks the air-conditioning air intake branch 113. In the absence of external force, the windshield 12 can remain in the first position until air-conditioning air flows through the air-conditioning air intake branch 113 again, at which point the windshield 12 rotates along the first direction.

[0042] Furthermore, if Figure 1 As shown, in one embodiment, the axis of rotation of the windshield member 12 relative to the three-way valve body 11 is a reference axis, and a cross section of the windshield member 12 passing through its center of gravity and the reference axis is a reference plane. When the windshield member 12 is in the first position, the angle a1 between the reference plane and the horizontal plane passing through the reference axis is 10° to 30°.

[0043] When there is no air-conditioning air flowing through the air-conditioning air intake branch pipe 113, the windshield 12 is located in the first position. At this time, the oil smoke that continues to flow through the three-way valve body 11 will be partially deposited on the windshield 12. Since the angle between the reference plane and the horizontal plane is 10° to 30° at this time, the deposited oil can flow along the windshield 12 to the hinge between the windshield 12 and the three-way valve body 11, and can even continue to flow downward into the oil smoke intake branch pipe 112 without gathering on the windshield 12. Moreover, when the windshield 12 blocks the air-conditioning air intake branch pipe 113, the reference plane is set at an angle relative to the horizontal plane, and the edge of the windshield 12 away from the reference axis rests on the inner wall of the three-way valve body 11. The three-way valve body 11 can provide an upward support force for the windshield 12, and the stability of the windshield 12 in the first position is relatively high.

[0044] Specifically, in one embodiment, when the wind shield 12 is in the first position, the angle between the reference plane and the horizontal plane is 10°.

[0045] Furthermore, in some embodiments, Figure 2 As shown, when the wind shield 12 is in the second position, the angle a2 between the reference plane and the horizontal plane is greater than 80°, and when the wind shield 12 is in the second position, the angle a2 between the reference plane and the horizontal plane is less than 90°. Thus, although the center of gravity of the wind shield 12 is offset to one side of the reference longitudinal plane, the ventilation gap 121 is sufficiently large to allow air conditioning air to flow smoothly.

[0046] Specifically, in some embodiments, when the wind shield 12 is in the second position, the angle a2 between the reference plane and the horizontal plane is 89°.

[0047] Furthermore, if Figure 1 and Figure 2 As shown, in one embodiment, the wind shield 12 is a plate-shaped structure. When the wind shield 12 is in the first position, the outer ring surface of the wind shield 12 abuts and seals against the three-way valve body 11, thereby blocking the air conditioning air intake branch 113 and the mixed discharge branch 111, thereby preventing oil smoke from entering the air conditioning air intake branch 113.

[0048] The windshield 12 is a plate-shaped structure, the two surfaces with the largest sum of areas on the windshield 12 are the first shielding surface and the second shielding surface, the outer ring surface is arranged along the edge of the first shielding surface, and the reference plane is parallel to the first shielding surface.

[0049] Furthermore, in some embodiments, Figure 1 and Figure 2 As shown, the rotation direction of the windshield member 12 when it rotates from the first position to the second position is a first rotation direction. When the windshield member 12 rotates to the second position, the windshield member 12 and the rotation-stopping member 13 are arranged in sequence along the first rotation direction, and the rotation-stopping member 13 abuts against the windshield member 12. Thus, the rotation-stopping member 13 blocks one side of the windshield member 12, preventing the windshield member 12 from continuing to rotate along the first rotation direction.

[0050] like Figure 1 and Figure 2 As shown in the figure, the turn marked by b is the first turn.

[0051] Furthermore, in one embodiment, when the wind shield 12 rotates to the second position, the surface of the anti-rotation member 13 opposite to the wind shield 12 is the first side surface, and the surface of the wind shield 12 facing away from the first side surface is the second side surface, and the anti-rotation member 13 is provided with a plurality of oil holes (not shown in the figure), and the oil holes pass through from the first side surface to the second side surface.

[0052] The oil flowing down from the wind shield 12 can then pass through the stopper from the oil hole and continue to flow into the oil fume suction branch pipe 112 .

[0053] Specifically, in one embodiment, when the windshield 12 is in the first position, the angle between the reference plane and the horizontal plane is 10° to 30°, and the oil passage hole is provided on the rotation-stopping member 13. Oil blocked by the windshield 12 slides along the surface of the windshield 12 to the position of the rotation-stopping member 13, then continues through the oil passage hole and eventually flows into the oil fume suction branch pipe 112.

[0054] Further, optionally, in other embodiments, when the wind shield 12 is located in the second position, the stop member 13 and the wind shield 12 are arranged sequentially on the first direction, and the stop member 13 provides a pulling force for the wind shield 12 to prevent the wind shield 12 from continuing to rotate along the first direction.

[0055] Specifically, in one embodiment, the anti-rotation member 13 is a pull rope, one end of which is connected to the wind shield 12, and the other end of which is connected to the three-way valve body 11. When the wind shield 12 is in the second position, the pull rope is in a straightened state, and the pull rope provides a force for the wind shield 12 to prevent it from continuing to rotate along the first direction.

[0056] Furthermore, in one embodiment, the wind shield 12 is located at the outlet of the air-conditioning air intake branch 113, the position on the mixing exhaust branch 111 that is connected to the air-conditioning air intake branch 113 is the air-conditioning air entry position, the position on the mixing exhaust branch 111 that is connected to the oil fume intake branch 112 is the oil fume entry position, and the air-conditioning entry position is not downstream of the oil fume entry position in the flow direction of the airflow in the mixing exhaust branch 111.

[0057] The oil stains blocked by the wind shield 12 at the outlet of the air-conditioning air intake branch 113 can flow from the air-conditioning air intake position to the oil fume intake position along the wall of the mixed exhaust branch 111 and finally flow back into the oil fume intake branch 112.

[0058] Specifically, in one embodiment, when the wind shield 12 is located at the first position, the angle between the reference plane and the horizontal plane is 10° to 30°. The wind shield 12 is located at the outlet of the air-conditioning air intake branch 113, and the wind shield 12 is hinged to the pipe wall of the air-conditioning air entry position, and the stopper 13 is located at this hinged position. The stopper 13 is provided with the oil hole. The oil stains on the wind shield 12 flow along the inclined surface to the position of the stopper 13, and the oil stains can continue to pass through the oil hole and flow to the oil fume entry position, and finally enter the oil fume intake branch 112.

[0059] Specifically, if Figure 1 and Figure 2 As shown, in one embodiment, the air-conditioning air inlet position and the oil fume inlet position are at the same position, the oil fume suction branch 112 and the air-conditioning air inlet branch 113 intersect at this position, and the intersection of the oil fume suction branch 112 and the air-conditioning air inlet branch 113 is the installation position 14, and the wind shield 12 is hinged at the installation position 14.

[0060] The anti-rotation member 13 is installed in the installation position 14. The oily dirt flowing down from the windshield member 12 passes through the anti-rotation member 13 and directly slides into the oil smoke suction branch pipe 112.

[0061] Specifically, if Figure 1 and Figure 2 As shown, when the windshield 12 is in the second position, the outlet of the air-conditioning air intake branch pipe 113 is located on one side of the windshield 12, and the outlet of the oil fume intake branch pipe 112 is located on the other side of the windshield 12. The oily dirt deposited on the windshield 12 is mainly located on the surface of the windshield 12 facing the outlet of the oil fume intake branch pipe 112.

[0062] Furthermore, if Figure 3 As shown, in another embodiment, an air-conditioning range hood 20 is provided, comprising a range hood portion 21, an air conditioning system 22, and the aforementioned three-way air guide assembly 10. The range hood portion 21 has an oil fume duct 211, the outlet of which communicates with the inlet of the oil fume intake branch 112. The air conditioning system 22 has an air conditioning air duct 221, the outlet of which communicates with the inlet of the air conditioning air intake branch 113.

[0063] The above scheme provides an air-conditioning range hood 20, which adopts the three-way air guide assembly 10 described in any of the above embodiments, so as to ensure that when there is no air-conditioning air flowing in the air-conditioning air intake branch pipe 113, the wind shield 12 can be rotated to the first position under the action of gravity to block the air-conditioning air intake branch pipe 113, thereby always ensuring that the wind shield 12 can play a role in preventing backflow.

[0064] Furthermore, in one embodiment, the three-way air guide assembly 10 is located above the oil fume duct 211 and the air conditioning duct 221. The range hood 21 also includes a fan located in the oil fume duct 211. The air conditioning system 22 also includes a heat exchanger located in the air conditioning duct.

[0065] The fan is started to draw the oil smoke upward from the bottom, so that the oil smoke is discharged upward from the oil smoke channel 211 into the oil smoke suction branch 112. After entering the oil smoke suction branch 112, the oil smoke continues to flow upward into the mixed discharge branch 111. When the air conditioning system 22 is in operation, the heat released by the heat exchanger can be carried away by the gas circulating in the air conditioning duct, forming air conditioning wind. The air conditioning wind flows upward into the air conditioning wind suction branch 113, and then continues to flow upward into the mixed discharge branch 111. Finally, the fluid in the mixed discharge branch 111 can be discharged outdoors.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0068] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0069] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0070] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0071] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A three-way air guide assembly, characterized in that: include: A three-way valve body, the three-way valve body having a mixed discharge branch pipe, and an oil fume suction branch pipe and an air conditioning air suction branch pipe both connected to the mixed discharge branch pipe; The wind shield is located in the space enclosed by the three-way valve body, and the wind shield is hinged to the three-way valve body, and the wind shield can rotate relative to the three-way valve between a first position and a second position, when the wind shield is in the first position, the air-conditioning air intake branch is blocked, and when the wind shield is in the second position, a ventilation gap is provided between the wind shield and the air-conditioning air intake branch, and the air-conditioning air intake branch and the mixed discharge branch are connected through the ventilation gap; the axis of rotation of the wind shield relative to the three-way valve body is a reference axis, and the cross section of the wind shield passing through its own center of gravity and the reference axis is a reference plane, when the wind shield is in the second position, the angle between the reference plane and the horizontal plane passing through the reference axis is greater than 80°, and when the wind shield is in the second position, the angle between the reference plane and the horizontal plane passing through the reference axis is less than 90°; A stop member is located in the space enclosed by the three-way valve body and is connected to the three-way valve body. When the wind shield rotates to the second position, the stop member acts on the wind shield and provides a force to prevent it from continuing to rotate, and the wind shield located at the second position can rotate back to the first position under the action of gravity.

2. The three-way air guide assembly according to claim 1, characterized in that: When the wind shield is in the first position, the angle between the reference plane and the horizontal plane passing through the reference axis is 10° to 30°.

3. The three-way air guide assembly according to claim 2, characterized in that: When the wind shield is in the second position, the angle between the reference plane and the horizontal plane is 89°.

4. The three-way air guide assembly according to claim 1, characterized in that: The wind shield is a plate-shaped structure. When the wind shield is located at the first position, the outer ring surface of the wind shield abuts and seals the three-way valve body, thereby cutting off the air-conditioning air intake branch and the mixed exhaust branch.

5. The three-way air guide assembly according to any one of claims 1 to 4, characterized in that: The rotation direction of the wind shield when it rotates from the first position to the second position is a first turn. When the wind shield is rotated to the second position, the wind shield and the anti-rotation member are arranged in sequence on the first turn, and the anti-rotation member abuts against the wind shield.

6. The three-way air guide assembly according to claim 5, characterized in that: When the wind shield rotates to the second position, the surface of the anti-rotation member opposite to the wind shield is the first side surface, and the surface of the wind shield facing away from the first side surface is the second side surface. The anti-rotation member is provided with a plurality of oil holes, and the oil holes pass through from the first side surface to the second side surface.

7. The three-way air guide assembly according to any one of claims 1 to 4, characterized in that: The wind shield is located at the outlet of the air-conditioning air intake branch pipe, the position on the mixed exhaust branch pipe that is connected to the air-conditioning air intake branch pipe is the air-conditioning air entry position, and the position on the mixed exhaust branch pipe that is connected to the oil fume intake branch pipe is the oil fume entry position. In the flow direction of the airflow in the mixed exhaust branch pipe, the air-conditioning entry position is not downstream of the oil fume entry position.

8. The three-way air guide assembly according to claim 7, characterized in that: The air-conditioning air inlet position and the oil fume inlet position are at the same position, the oil fume suction branch pipe and the air-conditioning air inlet branch pipe intersect at this position, and the intersection of the oil fume suction branch pipe and the air-conditioning air inlet branch pipe is the installation position, the wind shield is hinged at the installation position, and the anti-rotation member is installed at the installation position.

9. An air-conditioning range hood, characterized in that: It includes a range hood part, an air-conditioning system and a three-way air guide assembly as described in any one of claims 1 to 8, the range hood part has an oil fume channel, the outlet of the oil fume channel is connected to the inlet of the oil fume suction branch, the air-conditioning system has an air-conditioning air channel, the outlet of the air-conditioning air channel is connected to the inlet of the air-conditioning air suction branch.

10. The air-conditioning range hood according to claim 9, characterized in that: The three-way air guide assembly is located above the oil fume channel and the air conditioning air channel. The range hood part also includes a fan, which is located in the oil fume channel. The air conditioning system also includes a heat exchanger, which is located in the air conditioning air duct.

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