Fresh air pipe and air conditioner

Abstract

The embodiment of the utility model provides a fresh air pipe and an air conditioner, the fresh air pipe comprises a body pipe, the body pipe is provided with an indoor unit connecting end, an outdoor exhaust end and an outdoor air inlet end, the indoor unit connecting end is used for being connected with an indoor unit, the outdoor exhaust end is used for being connected with an outdoor unit, and the outdoor air inlet end is used for being communicated with the outdoor air environment; the control assembly is arranged in the body pipe, and the control assembly has a first control state and a second control state; when the control assembly is switched to the first control state, the outdoor air exhaust end is communicated with the indoor unit connecting end; and when the control assembly is switched to the second state, the outdoor air inlet end communicates with the indoor unit connecting end.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a fresh air duct and an air conditioner. Background Art

[0002] In related technologies, air conditioners with fresh air function usually require fresh air ducts and exhaust ducts to be installed through the wall separately, resulting in complex pipeline structure and cumbersome installation process; and indoor air is usually discharged directly into the outdoor air environment through the exhaust duct, resulting in low cooling capacity utilization rate. Utility Model Content

[0003] The embodiments of the present application provide a fresh air duct and an air conditioner, which can simplify the piping structure and installation process and improve the cooling capacity utilization rate.

[0004] On the one hand, an embodiment of the present application provides a fresh air duct, comprising: a main body pipe, having an indoor unit connection end, an outdoor exhaust end and an outdoor air inlet end, the indoor unit connection end is used to be connected to the indoor unit, the outdoor exhaust end is used to be connected to the outdoor unit, and the outdoor air inlet end is used to be connected to the outdoor air environment; a control component is arranged in the main body pipe, and the valve is used to connect the outdoor exhaust end and the indoor unit connection end so that the air in the indoor unit is discharged into the outdoor unit, or to connect the outdoor air inlet end and the indoor unit connection end so that outdoor fresh air is introduced into the indoor unit.

[0005] In some embodiments, the control component includes a first valve and a second valve, the first valve and the outdoor exhaust end are correspondingly arranged to rotate to connect or block the outdoor exhaust end and the indoor unit connection end; the second valve and the outdoor air inlet end are correspondingly arranged to rotate to connect or block the outdoor air inlet end and the indoor unit connection end.

[0006] In some embodiments, when the air pressure at the indoor unit connection end is greater than the air pressure at the outdoor exhaust end, the first valve opens to connect the outdoor exhaust end and the indoor unit connection end; when the air pressure at the indoor unit connection end is less than the air pressure at the outdoor exhaust end, the first valve closes to block the outdoor exhaust end and the indoor unit connection end.

[0007] In some embodiments, a first pivot portion is provided on the inner wall of the main body tube, a second pivot portion is provided on the first valve, and the first pivot portion and the second pivot portion are rotatably connected; a first limiting opening portion is provided on one of the first pivot portion and the second pivot portion, and a first limiting flange portion is provided on the other of the first pivot portion and the second pivot portion, the first limiting flange portion is embedded in the first limiting opening portion, and the first limiting flange portion can be rotated between the opposite side walls of the first limiting opening portion; the first limiting opening portion is set toward the outdoor exhaust end, so that the first valve opens when the air pressure of the first valve at the indoor unit connection end is greater than the air pressure of the outdoor exhaust end, and the first valve closes when the air pressure of the first valve at the indoor unit connection end is less than the air pressure of the outdoor exhaust end.

[0008] In some embodiments, when the air pressure at the indoor unit connection end is lower than the air pressure at the outdoor air inlet end, the second valve opens to connect the outdoor air inlet end and the indoor unit connection end; when the air pressure at the indoor unit connection end is higher than the air pressure at the outdoor air inlet end, the second valve closes to block the outdoor air inlet end and the indoor unit connection end.

[0009] In some embodiments, a third pivot portion is provided on the inner wall of the main body tube, and a fourth pivot portion is provided on the second valve, and the third pivot portion and the fourth pivot portion are rotatably connected; a second limiting opening portion is provided on one of the third pivot portion and the fourth pivot portion, and a second limiting flange portion is provided on the other of the third pivot portion and the fourth pivot portion, the second limiting flange portion is embedded in the second limiting opening portion, and the second limiting flange portion can be rotated between the opposite side walls of the second limiting opening portion; the second limiting opening portion is arranged to face away from the outdoor air inlet end, so that the second valve opens when the air pressure at the indoor unit connection end is lower than the air pressure at the outdoor air inlet end, and closes when the air pressure at the indoor unit connection end is higher than the air pressure at the outdoor air inlet end.

[0010] In some embodiments, the control component includes a third valve, which can rotate between a first position and a second position; when the third valve moves to the first position, the third valve connects the outdoor exhaust end and the indoor unit connection end, and blocks the outdoor air inlet end and the indoor unit connection end; when the third valve moves to the second position, the third valve blocks the outdoor exhaust end and the indoor unit connection end, and connects the outdoor air inlet end and the indoor unit connection end.

[0011] In some embodiments, the fresh air duct includes a driving component connected to the valve, and the driving component is used to drive the valve to rotate and switch.

[0012] In some embodiments, the main pipe includes a three-way pipe body, an indoor side pipe section and an outdoor side pipe section, the three-way pipe body has a first open end, a second open end and the outdoor air inlet end that are connected to each other; the indoor side pipe section is connected to the first open end, and the indoor unit connection end is formed on the end of the indoor side pipe section away from the first open end; the outdoor side pipe section is connected to the second open end, and the outdoor exhaust end is formed on the end of the outdoor side pipe section away from the first open end.

[0013] On the other hand, an embodiment of the present application provides an air conditioner, comprising an indoor unit, an outdoor unit and the fresh air duct described in any of the above embodiments, the indoor unit connection end is connected to the indoor unit, the outdoor exhaust end is connected to the outdoor unit, and the outdoor air inlet end is connected to the outdoor air environment.

[0014] In some embodiments, the indoor unit is provided with a fresh air fan, and the fresh air fan is connected to the indoor unit connection end. When the control component controls the outdoor air inlet end and the indoor unit connection end to be connected, the fresh air fan is used to suck the outdoor fresh air into the indoor unit through the fresh air duct; when the control component controls the outdoor air exhaust end and the indoor unit connection end to be connected, the fresh air fan is used to discharge the air in the indoor unit to the outdoor unit through the fresh air duct.

[0015] In some embodiments, the fresh air duct includes a first valve and a second valve, the first valve is corresponding to the outdoor exhaust end, and the second valve is corresponding to the outdoor air inlet end, and the first valve and the second valve are rotatably arranged in the main body tube; when the fresh air fan is running to exhaust air to the outside, the air pressure in the main body tube causes the first valve to open so that the outdoor exhaust end and the indoor unit connection end are connected; when the fresh air fan is running in reverse to inhale outdoor fresh air, the air pressure in the main body tube causes the second valve to open so that the outdoor air inlet end and the indoor unit connection end are connected.

[0016] In some embodiments, the outdoor unit is provided with at least one heating device, and the at least one heating device is arranged along the flow direction of the exhaust airflow of the outdoor exhaust end.

[0017] In some embodiments, the outdoor unit is provided with a first installation cavity, a second installation cavity, a middle partition, an outdoor fan and a plurality of heating devices, wherein the plurality of heating devices include a compressor and an outdoor electrical control box, the middle partition is arranged between the first installation cavity and the second installation cavity, the compressor is arranged in the first installation cavity, the outdoor fan and the outdoor electrical control box are respectively arranged in the second installation cavity, and the outdoor electrical control box is fixed on the middle partition.

[0018] The embodiment of the present application sets a main body pipe and a valve. The main body pipe has an indoor unit connection end, an outdoor exhaust end and an outdoor air inlet end. The valve is switched to change the on-off state between the indoor unit connection end and the outdoor exhaust end, as well as the on-off state between the indoor unit connection end and the outdoor air inlet end, so that the fresh air duct can be used for introducing outdoor fresh air and discharging indoor dirty air respectively. There is no need to set two air ducts through the wall for introducing fresh air and discharging dirty air respectively, thereby simplifying the pipeline structure and installation process; when discharging the indoor dirty air, the fresh air duct can be used to discharge the indoor dirty air to the outdoor unit, and the cold energy in the indoor dirty air can be used to cool the heating components in the outdoor unit, thereby improving the utilization rate of the cold energy in the indoor dirty air. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is an axonometric structural diagram of a fresh air duct provided in some embodiments of the present application;

[0021] Figure 2 is a partial cross-sectional structural diagram of a fresh air duct provided in some embodiments of the present application;

[0022] Figure 3 This is an axonometric structural diagram of a valve of a fresh air duct provided in some embodiments of the present application;

[0023] Figure 4 This is a partial projection structure diagram of the fresh air duct provided in some embodiments of the present application;

[0024] Figure 5 yes Figure 4 AA partial cross-sectional structural diagram of the Zhongxin air duct;

[0025] Figure 6 yes Figure 4 BB partial cross-sectional structural diagram of the Zhongxin air duct;

[0026] Figure 7 This is another partial cross-sectional structural diagram of the fresh air duct provided in some embodiments of the present application;

[0027] Figure 8 This is a connection structure diagram of the air conditioner provided in some embodiments of the present application.

[0028] Description of main component symbols:

[0029] 1-Fresh air duct, 10-Main pipe, 11-Indoor unit connection end, 12-Outdoor exhaust end, 13-Outdoor air inlet end, 14-First pivoting portion, 141-First peripheral wall, 142-First position-limiting opening, 15-Third pivoting portion, 151-Second peripheral wall, 152-Second position-limiting opening, 101-Three-way pipe body, 1011-First opening end, 1012-Second opening end, 102-Indoor side pipe section, 103-Outdoor side pipe section, 2 0-control component, 21-first valve, 211-second pivoting part, 212-first limiting flange part, 22-second valve, 221-fourth pivoting part, 222-second limiting flange part, 23-third valve, 2-indoor unit, 201-fresh air fan, 3-outdoor unit, 301-first installation cavity, 302-compressor, 303-second installation cavity, 304-middle partition, 305-outdoor fan, 306-outdoor electrical control box. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0031] In the description of the present application, 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" and the like 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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0033] The use of "suitable for" or "configured to" in this application is intended to be open and inclusive language, and does not exclude devices that are adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0034] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0035] like Figure 1 and Figure 2 As shown, on the one hand, an embodiment of the present application provides a fresh air duct 1, which includes a main tube 10 and a control component 20, which can simplify the pipeline structure and installation process and improve the utilization rate of cooling capacity.

[0036] The main tube 10 has an indoor unit connection end 11, an outdoor exhaust end 12, and an outdoor air inlet end 13. The indoor unit connection end 11 is connected to the indoor unit 2, the outdoor exhaust end 12 is connected to the outdoor unit 3, and the outdoor air inlet end 13 is connected to the outdoor air environment. The indoor unit connection end 11 is located indoors, while the outdoor exhaust end 12 and the outdoor air inlet end 13 are both located outdoors.

[0037] The control assembly 20 is disposed within the main tube 10 and has a first control state and a second control state. When the control assembly 20 is switched to the first control state, the outdoor air outlet 12 and the indoor unit connection terminal 11 are electrically connected. When the control assembly 20 is switched to the second control state, the outdoor air inlet 13 and the indoor unit connection terminal 11 are electrically connected. The number of control assemblies 20 can be determined based on actual needs and can be one or more, and this embodiment of the application is not limited thereto.

[0038] When it is necessary to introduce outdoor fresh air into the room, a negative pressure can be formed in the main tube 10, and the control component 20 is switched to a position where the outdoor air inlet end 13 and the indoor unit connection end 11 are connected, so that the outdoor fresh air can be introduced into the indoor unit 2 through the main tube 10 under the action of the negative pressure; and when it is necessary to discharge the indoor dirty air to the outside, exhaust pressure can be formed in the main tube 10, and the control component 20 is switched to a position where the outdoor exhaust end 12 and the indoor unit connection end 11 are connected, so that the indoor dirty air in the indoor unit 2 can be discharged to the outdoor unit 3 through the main tube 10 under the action of the exhaust pressure, and the cooling capacity in the indoor dirty air is used to cool the heating components in the outdoor unit 3, thereby improving the utilization rate of the cooling capacity in the indoor dirty air.

[0039] Compared with the related art, the fresh air duct 1 provided in the embodiment of the present application is provided with a main body tube 10 and a control component 20, and uses the switching of the control component 20 to change the on-off state between the indoor unit connection end 11 and the outdoor exhaust end 12, and the on-off state between the indoor unit connection end 11 and the outdoor air inlet end 13, so that the fresh air duct 1 can be used for introducing outdoor fresh air and discharging indoor dirty air respectively, without setting two air ducts for introducing fresh air and discharging dirty air through the wall, thereby simplifying the pipeline structure and installation process; and when discharging the indoor dirty air, the fresh air duct 1 can be used to discharge the indoor dirty air to the outdoor unit 3, and the cold energy in the indoor dirty air can be used to cool the heating components in the outdoor unit 3, thereby improving the utilization rate of the cold energy in the indoor dirty air.

[0040] In some embodiments, the control assembly 20 may include a first valve 21 and a second valve 22. The first valve 21 is disposed corresponding to the outdoor exhaust terminal 12 and is configured to rotatably connect or block the outdoor exhaust terminal 12 and the indoor unit connection terminal 11; the second valve 22 is disposed corresponding to the outdoor air inlet terminal 13 and is configured to rotatably connect or block the outdoor air inlet terminal 13 and the indoor unit connection terminal 11.

[0041] Here, the main pipe 10 may have a three-way pipe structure, with the indoor unit connection end 11, the outdoor exhaust end 12, and the outdoor air inlet end 13 respectively formed on three branches of the three-way pipe structure. A first valve 21 may be provided on the branch where the outdoor exhaust end 12 is located, for independently controlling the flow between the outdoor exhaust end 12 and the indoor unit connection end 11; and a second valve 22 may be provided on the branch where the outdoor air inlet end 13 is located, for independently controlling the flow between the outdoor air inlet end 13 and the indoor unit connection end 11.

[0042] In some examples, the first valve 21 may be opened only when the air pressure at the indoor unit connection terminal 11 is greater than the air pressure at the outdoor exhaust terminal 12, thereby connecting the outdoor exhaust terminal 12 and the indoor unit connection terminal 11. In the fresh air mode, a negative pressure is formed at the indoor unit connection terminal 11. At this time, the air pressure at the outdoor exhaust terminal 12 is greater than the air pressure at the indoor unit connection terminal 11. The first valve 21 remains closed, so that the outdoor exhaust terminal 12 and the indoor unit connection terminal 11 are blocked by the first valve 21, preventing the air in the outdoor unit 3 from being accidentally sucked into the indoor unit 2. In the exhaust mode, the air pressure at the indoor unit connection terminal 11 is greater than the air pressure at the outdoor exhaust terminal 12. The first valve 21 may move to a position that connects the outdoor exhaust terminal 12 and the indoor unit connection terminal 11, thereby connecting the outdoor exhaust terminal 12 and the indoor unit connection terminal 11 so that the indoor dirty air in the indoor unit 2 is discharged into the outdoor unit 3.

[0043] like Figures 2 to 6 As shown, in some examples, a first pivoting portion 14 may be provided on the inner wall of the main tube 10, and a second pivoting portion 211 may be provided on the first valve 21. The second pivoting portion 211 is rotatably connected to the first pivoting portion 14, so that the first valve 21 can be rotatably switched on and off. A first position-limiting opening may be provided on one of the first pivoting portion 14 and the second pivoting portion 211, and a first position-limiting flange 212 may be provided on the other of the first pivoting portion 14 and the second pivoting portion 211. The first position-limiting flange 212 is embedded in the first position-limiting opening 142 and can rotate between opposite sidewalls of the first position-limiting opening 142. For example, a first limiting opening portion 142 may be provided on the peripheral wall of the first pivotal portion 14, i.e., the first peripheral wall 141, and a first limiting flange portion 212 may be provided on the peripheral wall of the second pivotal portion 211; the first limiting flange portion 212 is embedded in the first limiting opening portion 142 and rotates between the opposite side walls of the first limiting opening portion 142.

[0044] In some examples, the first limiting opening portion 142 can be set toward the outdoor exhaust end 12. On the one hand, the first valve 21 is opened when the air pressure at the indoor unit connection end 11 is greater than the air pressure at the outdoor exhaust end 12, and then the first valve 21 is closed in the fresh air mode of inhaling outdoor fresh air, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are blocked. On the other hand, the first valve 21 is closed when the air pressure at the indoor unit connection end 11 is less than the air pressure at the outdoor exhaust end 12, and then the first valve 21 is opened in the exhaust mode of discharging indoor polluted air, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are connected. Specifically, in the fresh air mode, a negative pressure is formed at the indoor unit connection end 11. At this time, the air pressure at the outdoor exhaust end 12 is greater than the air pressure at the indoor unit connection end 11. Due to the limiting effect of the first limiting opening portion 142 on the first limiting flange portion 212, the first valve 21 cannot move to the open position to connect the outdoor exhaust end 12 and the indoor unit connection end 11, so that the first valve 21 is still in the closed position, and then the outdoor exhaust end 12 and the indoor unit connection end 11 are still in a blocked state, preventing the air in the outdoor unit 3 from being accidentally sucked into the indoor unit 2; in the exhaust mode, the air pressure at the outdoor exhaust end 12 is less than the air pressure at the indoor unit connection end 11, and the first valve 21 can move to the open position to connect the outdoor exhaust end 12 and the indoor unit connection end 11, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are connected, so that the indoor dirty air in the indoor unit 2 is discharged to the outdoor unit 3.

[0045] In some examples, the second valve 22 can be opened only when the air pressure at the indoor unit connection terminal 11 is lower than the air pressure at the outdoor air inlet terminal 13, thereby connecting the outdoor air inlet terminal 13 and the indoor unit connection terminal 11. In the fresh air mode, a negative pressure is formed at the indoor unit connection terminal 11. At this time, the air pressure at the outdoor air inlet terminal 13 is higher than the air pressure at the indoor unit connection terminal 11. The second valve 22 can move to a position that connects the outdoor air inlet terminal 13 and the indoor unit connection terminal 11, thereby connecting the outdoor air inlet terminal 13 and the indoor unit connection terminal 11 so that outdoor fresh air can be drawn into the indoor unit 2. In the exhaust mode, the air pressure at the outdoor air inlet terminal 13 is lower than the air pressure at the indoor unit connection terminal 11. The second valve 22 remains closed, blocking the outdoor air inlet terminal 13 and the indoor unit connection terminal 11. This ensures that all indoor polluted air is discharged into the outdoor unit 3, thereby fully utilizing the cooling capacity of the indoor polluted air to cool the heating components of the outdoor unit 3.

[0046] In some examples, a third pivoting portion 15 may be provided on the inner wall of the main tube 10, and a fourth pivoting portion 221 may be provided on the second valve 22. The fourth pivoting portion 221 and the third pivoting portion 15 are rotatably connected to each other, so that the second valve 22 can be rotatably switched on and off. A second position-limiting opening 152 may be provided on one of the third pivoting portion 15 and the fourth pivoting portion 221, and a second position-limiting flange 222 may be provided on the other of the third pivoting portion 15 and the fourth pivoting portion 221. The second position-limiting flange 222 is embedded in the second position-limiting opening 152 and can rotate between opposite sidewalls of the second position-limiting opening 152. For example, a second limiting opening portion 152 may be provided on the peripheral wall of the third pivotal portion 15, i.e., the second peripheral wall 151, and a second limiting flange portion 222 may be provided on the peripheral wall of the fourth pivotal portion 221. The second limiting flange portion 222 is embedded in the second limiting opening portion 152, and the second limiting flange portion 222 can rotate between the opposite side walls of the second limiting opening portion 152.

[0047] Here, the second limiting opening portion 152 can be set back to the outdoor air inlet end 13. On the one hand, the second valve 22 is opened when the air pressure at the indoor unit connection end 11 is lower than the air pressure at the outdoor exhaust end 12, and then the second valve 22 is opened in the fresh air mode of inhaling outdoor fresh air, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are connected. On the other hand, the second valve 22 is closed when the air pressure at the indoor unit connection end 11 is higher than the air pressure at the outdoor exhaust end 12, and then the second valve 22 is closed in the exhaust mode of discharging indoor polluted air, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are blocked. Specifically, in the fresh air mode, a negative pressure is formed at the indoor unit connection end 11. At this time, the air pressure at the outdoor air inlet end 13 is greater than the air pressure at the indoor unit connection end 11. The second valve 22 can move to the open position to connect the outdoor air inlet end 13 and the indoor unit connection end 11, so that the outdoor air inlet end 13 and the indoor unit connection end 11 are connected, so that the outdoor fresh air is sucked into the indoor unit 2; while in the exhaust mode, the air pressure at the outdoor air inlet end 13 is lower than the air pressure at the indoor unit connection end 11. Due to the restrictive effect of the second limiting opening portion 152 on the second limiting flange portion 222, the second valve 22 cannot move to the open position to connect the outdoor air inlet end 13 and the indoor unit connection end 11, so that the second valve 22 is still in the closed position, and then the outdoor air inlet end 13 and the indoor unit connection end 11 are still in a blocked state, ensuring that the indoor dirty air is completely discharged to the outdoor unit 3, so as to fully utilize the cooling capacity of the indoor dirty air to cool the heating components of the outdoor unit 3.

[0048] like Figure 7As shown, in other embodiments, the control assembly 20 may include a third valve 23 that is movable between a first position and a second position. When the third valve 23 moves to the first position, the third valve 23 connects the outdoor exhaust terminal 12 and the indoor unit connection terminal 11 and blocks the outdoor air inlet terminal 13 from the indoor unit connection terminal 11. When the third valve 23 moves to the second position, the third valve 23 blocks the outdoor exhaust terminal 12 and the indoor unit connection terminal 11 and connects the outdoor air inlet terminal 13 to the indoor unit connection terminal 11. The movement of the third valve 23 can be determined according to actual needs, and can adopt a movement form such as rotation or translation, which is not limited in the present embodiment. For example, the third valve 23 is rotatable between the first position and the second position.

[0049] Here, the main body tube 10 can have a three-way pipe structure, and the indoor unit connection end 11, the outdoor exhaust end 12 and the outdoor air inlet end 13 are respectively formed on the three branches of the three-way pipe structure; the third valve 23 can be arranged at the connection of the branch where the outdoor exhaust end 12 is located and the branch where the outdoor air inlet end 13 is located, and can be movably covered The branch where the outdoor exhaust end 12 is located or the branch where the outdoor air inlet end 13 is located. When the third valve 23 moves to the first position, the third valve 23 covers the branch where the outdoor air inlet end 13 is located and exposes the branch where the outdoor air exhaust end 12 is located, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are connected, and the outdoor air inlet end 13 and the indoor unit connection end 11 are blocked by the third valve 23; and when the third valve 23 moves to the second position, the third valve 23 covers the branch where the outdoor air exhaust end 12 is located and exposes the branch where the outdoor air inlet end 13 is located, so that the outdoor exhaust end 12 and the indoor unit connection end 11 are blocked by the third valve 23, and the outdoor air inlet end 13 and the indoor unit connection end 11 are connected.

[0050] The driving mode of the control component 20 when switching on and off can be determined according to actual needs. For example, active driving by setting a special driving structure, passive driving by using the air pressure in the main tube 10 to drive the control component 20 to switch, etc. can be adopted. The embodiments of the present application do not limit this. In some embodiments, the air pressure generated in the main tube 10 when the fresh air module of the indoor unit 2 is in operation can be used to turn the control component 20 on or off. There is no need to set up a special driving structure, which can simplify the mechanical structure. In other embodiments, the fresh air duct 1 may include a driving member connected to the control component 20, and the driving member is used to drive the control component 20 to rotate and switch, thereby realizing active drive switching control. The type of driving member can be determined according to actual needs. For example, a driving motor and the like can be adopted. The embodiments of the present application do not limit this.

[0051] In some embodiments, the main pipe 10 may include a three-way pipe body 101, an indoor pipe section 102, and an outdoor pipe section 103. The three-way pipe body 101 has a first open end 1011, a second open end 1012, and an outdoor air inlet end 13, which are interconnected. The indoor pipe section 102 is connected to the first open end 1011, and the indoor unit connection end 11 is formed on the end of the indoor pipe section 102 away from the first open end 1011. The outdoor pipe section 103 is connected to the second open end 1012, and the outdoor air outlet end 12 is formed on the end of the outdoor pipe section 103 away from the first open end 1011. Here, the control assembly 20 may be disposed within the three-way pipe body 101.

[0052] like Figures 1 to 8 As shown, on the other hand, an embodiment of the present application provides an air conditioner, which includes an indoor unit 2, an outdoor unit 3 and a fresh air duct 1 of any of the above embodiments, wherein the indoor unit connection end 11 is connected to the indoor unit 2, the outdoor exhaust end 12 is connected to the outdoor unit 3, and the outdoor air inlet end 13 is connected to the outdoor air environment. The type of air conditioner can be determined according to actual needs, and can adopt air conditioners with split structures such as wall-mounted air conditioners and cabinet air conditioners, which are not limited in this embodiment of the present application. The air conditioner provided in the embodiment of the present application has the above-mentioned fresh air duct 1, thereby simplifying the pipeline structure and installation process, and improving the utilization rate of cooling capacity.

[0053] In some embodiments, the indoor unit 2 may be provided with a fresh air blower 201, which is connected to the indoor unit connection terminal 11. When the control component 20 controls the outdoor air inlet terminal 13 and the indoor unit connection terminal 11 to be conductive, the fresh air blower 201 is used to draw outdoor fresh air into the indoor unit 2 through the fresh air duct 1. When the control component 20 controls the outdoor air outlet terminal 12 and the indoor unit connection terminal 11 to be conductive, the fresh air blower 201 is used to discharge the air in the indoor unit 2 through the fresh air duct 1 to the outdoor unit 3, thereby achieving a ventilation function.

[0054] In some examples, the fresh air duct 1 may include the first valve 21 and the second valve 22 as described above. When the fresh air blower 201 is running to exhaust air to the outside, the air pressure in the main duct 10 causes the first valve 21 to open, thereby connecting the outdoor air outlet 12 with the indoor unit connection end 11. When the fresh air blower 201 is running in the reverse direction to draw in outdoor fresh air, the air pressure in the main duct 10 causes the second valve 22 to open, thereby connecting the outdoor air inlet 13 with the indoor unit connection end 11.

[0055] In some embodiments, the outdoor unit 3 may be equipped with at least one heating element, which is arranged along the direction of the exhaust airflow from the outdoor exhaust terminal 12. In some examples, the outdoor unit 3 may be equipped with multiple heating elements, which are sequentially arranged along the direction of the exhaust airflow from the outdoor exhaust terminal 12. In this way, after the indoor polluted air discharged from the fresh air duct 1 passes through the outdoor exhaust terminal 12 and enters the outdoor unit 3, it can flow through multiple heating elements, achieving cooling and heat dissipation of the multiple heating elements.

[0056] In some examples, the outdoor unit 3 may be provided with a first installation cavity 301 and a compressor 302. The compressor 302 is disposed in the first installation cavity 301, and the first installation cavity 301 is connected to the outdoor exhaust port 12. In this way, the indoor polluted air discharged through the fresh air duct 1 can enter the first installation cavity 301, thereby cooling and dissipating the heat of the compressor 302.

[0057] In some examples, the outdoor unit 3 may be provided with a first mounting cavity 301, a second mounting cavity 303, a middle partition 304, an outdoor fan 305, and multiple heat-generating components, including a compressor 302 and an outdoor electrical control box 306. The middle partition 304 is disposed between the first mounting cavity 301 and the second mounting cavity 303, with the compressor 302 disposed in the first mounting cavity 301. The outdoor fan 305 and the outdoor electrical control box 306 are each disposed in the second mounting cavity 303, with the outdoor electrical control box 306 secured to the middle partition 304. In this way, the indoor polluted air exhausted through the fresh air duct 1 can sequentially pass through the first mounting cavity 301 and the second mounting cavity 303, cooling and dissipating the heat to the compressor 302 and the outdoor electrical control box 306, respectively, thereby improving the utilization rate of the cooling capacity of the indoor polluted air.

[0058] The above is a detailed introduction to the fresh air duct and air conditioner provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A new air duct, characterized in that: include: The main body tube has an indoor unit connection end, an outdoor exhaust end, and an outdoor air inlet end, wherein the indoor unit connection end is used to connect to the indoor unit, the outdoor exhaust end is used to connect to the outdoor unit, and the outdoor air inlet end is used to communicate with the outdoor air environment; A control component is arranged in the main body tube, and the control component has a first control state and a second control state; when the control component is switched to the first control state, the outdoor exhaust end and the indoor unit connection end are connected; when the control component is switched to the second control state, the outdoor air inlet end and the indoor unit connection end are connected.

2. The fresh air duct according to claim 1, characterized in that: The control component includes a first valve and a second valve. The first valve is correspondingly arranged to the outdoor exhaust end and is used to connect or block the outdoor exhaust end and the indoor unit connection end; the second valve is correspondingly arranged to the outdoor air inlet end and is used to connect or block the outdoor air inlet end and the indoor unit connection end.

3. The fresh air duct according to claim 2, characterized in that: When the air pressure at the indoor unit connection end is greater than the air pressure at the outdoor exhaust end, the first valve opens to connect the outdoor exhaust end and the indoor unit connection end; and when the air pressure at the indoor unit connection end is less than the air pressure at the outdoor exhaust end, the first valve closes to block the outdoor exhaust end and the indoor unit connection end.

4. The fresh air duct according to claim 3, characterized in that: A first pivoting portion is provided on the inner wall of the main body tube, a second pivoting portion is provided on the first valve, and the first pivoting portion and the second pivoting portion are rotatably connected; a first limiting opening portion is provided on one of the first pivoting portion and the second pivoting portion, and a first limiting flange portion is provided on the other of the first pivoting portion and the second pivoting portion, the first limiting flange portion is embedded in the first limiting opening portion, and the first limiting flange portion can be rotated between the opposite side walls of the first limiting opening portion, and the first limiting opening portion is arranged toward the outdoor exhaust end.

5. The fresh air duct according to claim 2, characterized in that: When the air pressure at the indoor unit connection end is lower than the air pressure at the outdoor air inlet end, the second valve opens to connect the outdoor air inlet end and the indoor unit connection end; and when the air pressure at the indoor unit connection end is higher than the air pressure at the outdoor air inlet end, the second valve closes to block the outdoor air inlet end and the indoor unit connection end.

6. The fresh air duct according to claim 5, characterized in that: A third pivot portion is provided on the inner wall of the main body tube, and a fourth pivot portion is provided on the second valve, and the third pivot portion and the fourth pivot portion are rotatably connected; a second limiting opening portion is provided on one of the third pivot portion and the fourth pivot portion, and a second limiting flange portion is provided on the other of the third pivot portion and the fourth pivot portion, the second limiting flange portion is embedded in the second limiting opening portion, and the second limiting flange portion can be rotated between the opposite side walls of the second limiting opening portion, and the second limiting opening portion is arranged to face away from the outdoor air inlet end.

7. The fresh air duct according to claim 1, characterized in that: The control component includes a third valve, which can move between a first position and a second position; when the third valve moves to the first position, the third valve connects the outdoor exhaust end and the indoor unit connection end, and blocks the outdoor air inlet end and the indoor unit connection end; when the third valve moves to the second position, the third valve blocks the outdoor exhaust end and the indoor unit connection end, and connects the outdoor air inlet end and the indoor unit connection end.

8. An air conditioner, characterized in that: It includes an indoor unit, an outdoor unit and a fresh air duct according to any one of claims 1 to 7, wherein the indoor unit connection end is connected to the indoor unit, the outdoor exhaust end is connected to the outdoor unit, and the outdoor air inlet end is connected to the outdoor air environment.

9. The air conditioner according to claim 8, characterized in that The indoor unit is provided with a fresh air blower, and the fresh air blower is connected to the indoor unit connection end. When the control component controls the outdoor air inlet end and the indoor unit connection end to be connected, the fresh air blower is used to suck the outdoor fresh air into the indoor unit through the fresh air duct; when the control component controls the outdoor air exhaust end and the indoor unit connection end to be connected, the fresh air blower is used to discharge the air in the indoor unit into the outdoor unit through the fresh air duct.

10. The air conditioner according to claim 9, characterized in that The fresh air duct includes a first valve and a second valve, the first valve is correspondingly provided at the outdoor air exhaust end, the second valve is correspondingly provided at the outdoor air inlet end, and the first valve and the second valve are rotatably provided in the main body tube respectively; When the fresh air fan operates to exhaust air to the outside, the air pressure in the main pipe causes the first valve to open, so that the outdoor exhaust end and the indoor unit connection end are connected; when the fresh air fan operates in reverse to inhale outdoor fresh air, the air pressure in the main pipe causes the second valve to open, so that the outdoor air inlet end and the indoor unit connection end are connected.

11. The air conditioner according to claim 8, characterized in that The outdoor unit is provided with at least one heating device, and the at least one heating device is arranged along the flow direction of the exhaust air flow of the outdoor exhaust end.

12. The air conditioner according to claim 11, characterized in that The outdoor unit is provided with a first installation cavity, a second installation cavity, a middle partition, an outdoor fan and a plurality of heating devices, wherein the plurality of heating devices include a compressor and an outdoor electric control box. The middle partition is arranged between the first installation cavity and the second installation cavity, the compressor is arranged in the first installation cavity, the outdoor fan and the outdoor electric control box are respectively arranged in the second installation cavity, and the outdoor electric control box is fixed on the middle partition.

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