Air duct components and air conditioners

Abstract

The present invention discloses an air duct assembly and an air conditioner, wherein the air duct assembly comprises: an air duct shell, a wind wheel and a switch device. A circulating air duct and a fresh air duct are formed in the air duct shell, and a return air port and a supply air port connected to the circulating air duct are provided on the air duct shell, and the fresh air duct is connected to the supply air port; the wind wheel is provided on the circulating air duct; the switch device is installed on the air duct shell and is used to open and close the fresh air duct. The air duct assembly according to an embodiment of the present invention has a fresh air channel and is provided with a switch device to open and close it.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and in particular to an air duct component and an air conditioner having the air duct component. Background Art

[0002] Air conditioners in related technologies, especially window-type air conditioners, do not have a structure for introducing fresh air, which results in a decrease in the air quality of the indoor environment after the air conditioner has been running for a period of time, which can easily lead to bacterial growth, affecting the safety and health of users. Summary of the invention

[0003] An object of the present invention is to provide an air duct assembly having a fresh air passage and provided with a switch device for opening and closing.

[0004] According to an embodiment of the present invention, the duct assembly comprises: a duct housing, a wind wheel and a switch device. A circulating duct and a fresh air duct are formed in the duct housing, and a return air port and a supply air port connected to the circulating duct are provided on the duct housing, and the fresh air duct is connected to the supply air port; the wind wheel is provided on the circulating duct; and the switch device is installed on the duct housing for opening and closing the fresh air duct.

[0005] The air duct assembly according to the embodiment of the present invention has a fresh air channel and is provided with a switch device for opening and closing.

[0006] In addition, the air duct assembly according to the above embodiment of the present invention may also have the following additional technical features:

[0007] In some embodiments, the bottom surface of the air supply outlet includes a first step surface, a second step surface and a connecting surface, the connecting surface is connected between the first step surface and the second step surface, and the first step surface is higher than the second step surface to form a step, and the outlet of the fresh air duct is arranged on the first step surface.

[0008] In some embodiments, the first step surface is configured as an arc-shaped surface whose depth gradually decreases in a direction away from the second step surface.

[0009] In some embodiments, the circulation air duct is configured to be inclined from the return air outlet to the supply air outlet in a direction away from the fresh air duct.

[0010] In some embodiments, the wind wheel is configured to rotate in a direction from the return air outlet to the supply air outlet and in a direction away from the fresh air duct.

[0011] In some embodiments, the fresh air duct penetrates the duct shell in the front-to-back direction, the circulating air duct extends in the longitudinal direction, the rear side of the air supply port is closed and the front side is open for air supply, the air supply port is configured to extend in the transverse direction, and the fresh air duct is arranged at one end of the air supply port in the transverse direction, and the transverse, longitudinal and front-to-back directions are perpendicular to each other.

[0012] In some embodiments, the air duct shell includes: a rear air duct and a front air duct, the rear air duct is provided with a fresh air inlet and the circulating air duct; the front air duct is arranged on the front side of the rear air duct, and the front air duct is provided with a fresh air outlet and an air guide port, the fresh air outlet and the fresh air inlet are opposite to each other front and back and jointly construct the fresh air duct, and the air guide port and the air outlet end of the circulating air duct are opposite to each other front and back and jointly construct the air supply port.

[0013] In some embodiments, the flow area of ​​the fresh air outlet is smaller than the flow area of ​​the fresh air inlet.

[0014] In some embodiments, a portion of the switch device is disposed in the fresh air inlet to open and close the fresh air inlet.

[0015] In some embodiments, the switch device is configured to be installed into the fresh air inlet from the front side of the fresh air inlet.

[0016] In some embodiments, the air duct assembly further includes: an air outlet frame, the air outlet frame is connected to the air duct shell and is opposite to the air supply port, and the switch device includes a pull rod, which extends to be adjacent to the air outlet frame and does not extend out of the air outlet frame.

[0017] In some embodiments, a handle perpendicular to the pull rod is provided on one end of the pull rod adjacent to the air outlet frame.

[0018] An air conditioner according to an embodiment of the present invention comprises: an air duct assembly and a heat exchanger, wherein the air duct assembly is the air duct assembly described above; and the heat exchanger is arranged in the circulating air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of an air duct assembly according to an embodiment of the present invention.

[0020] Figure 2 It is a front view of an air duct assembly according to an embodiment of the present invention.

[0021] Figure 3 yes Figure 2 Cross-sectional view of the middle section AA.

[0022] Figure 4 yes Figure 2 Cross-sectional view of the middle section BB.

[0023] Figure 5 4 is a side view of an air duct assembly according to an embodiment of the present invention.

[0024] Figure 6 It is a rear view of an air duct assembly according to an embodiment of the present invention.

[0025] Figure 7 Schematic diagram of an exploded view of an air duct assembly according to an embodiment of the present invention.

[0026] Figure 8 Schematic diagram of an air duct shell of an air duct assembly according to an embodiment of the present invention.

[0027] Fig. 9 It is a front view of an air duct shell of an air duct assembly according to an embodiment of the present invention.

[0028] Fig.10 yes Fig. 9 Cross-sectional view of section CC.

[0029] Fig.11 yes Fig. 9 Cross-sectional view of the middle section DD.

[0030] Fig.12 It is a rear view of an air duct assembly according to an embodiment of the present invention.

[0031] Fig.13 It is a schematic diagram of a rear air duct of an air duct assembly according to an embodiment of the present invention.

[0032] Fig.14 It is a front view of the rear air duct of the air duct assembly according to one embodiment of the present invention.

[0033] Fig.15 yes Fig.14 Cross-sectional view of the middle section EE.

[0034] Fig.16 yes Fig.14 Cross-sectional view of the middle section FF.

[0035] Fig.17 Schematic diagram of a front air duct of an air duct assembly according to an embodiment of the present invention.

[0036] Fig.18 It is a front view of the front air duct of the air duct assembly of one embodiment of the present invention.

[0037] Fig.19 yes Fig.18 Cross-sectional view of the middle section GG.

[0038] Fig. 20 is a cross-sectional view of a switch device according to an embodiment of the present invention.

[0039] Fig.21 Schematic diagram of an explosion of a switch device according to an embodiment of the present invention.

[0040] Fig. 22 Schematic diagram of a switch element of a switch device according to an embodiment of the present invention.

[0041] Fig.23 Schematic diagram of an air conditioner according to an embodiment of the present invention.

[0042] Fig.24 It is a front view of an air conditioner according to an embodiment of the present invention.

[0043] Fig.25 yes Fig.24 Cross-sectional view of the middle section HH.

[0044] Reference numerals:

[0045] Air conditioner 1000,

[0046] Duct assembly 100, switch device 10, door pocket 11, switch member 12, vent 101, damper 121, closed portion 1211, embedded portion 1212, first insert 1213, second insert 1214, first portion 1215, second portion 1216, guide port 102, guide portion 122, limit portion 103, pull rod 123, handle 124, duct shell 20, circulating duct 201, fresh air duct 202, return air port 203, air supply port 204, wind wheel 23, air outlet frame 24, rear duct 21, front duct 22, fresh air inlet 205, fresh air outlet 206, air guide port 207, cover plate 25, first step surface 208, second step surface 209, connecting surface 2010,

[0047] Heat exchanger 300. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0049] like Figure 1-Figure 19The air duct assembly 100 according to the embodiment of the present invention comprises: an air duct shell 20, in which a circulating air duct 201 and a fresh air duct 202 are formed, and an air supply port 204 connected to a return air port 203 of the circulating air duct 201 is provided on the air duct shell 20. The circulating air duct 201 can be used as an air duct for indoor circulating air flow, and the air flow is sucked into the circulating air duct 201 by the suction force of the return air port 203, and is sent out through the supply air port 204 after heat exchange in the circulating air duct 201. The fresh air duct 202 can provide fresh air to the room and improve the indoor air environment.

[0050] The air duct assembly 100 may further include a wind wheel 23, which is disposed in the circulating air duct 201 and is used to drive the air flow from the return air port 203 to the air supply port 204. Thus, a circulating heat exchange is formed from indoors → return air port 203 → circulating air duct 201 (which may contain a heat exchanger 300) → air supply port 204 → indoors. To improve the indoor environment, the circulating air duct 201 may contain a heat exchange device, or may be configured to contain a purification device, etc. The inner ring heat exchange device may improve the indoor temperature, and the inner purification device may improve the indoor air quality.

[0051] The air duct assembly 100 may further include a switch device 10 , which is installed on the air duct housing 20 and is used to open and close the fresh air duct 202 .

[0052] Optionally, the switch device 10 is the switch device 10 described in other embodiments of the present invention.

[0053] According to the air duct assembly 100 of the embodiment of the present invention, the switch device 10 is provided, so that the switch device 10 can be quickly installed and the installation efficiency of the switch device 10 can be improved. The installation of the switch member 12 from front to back can facilitate the installation of the air duct assembly 100, increase the installation space, and simplify the difficulty of the installation process.

[0054] Of course, other forms of switch devices 10 may also be used to open and close the air duct.

[0055] Optionally, the door cover 11 is nested in the fresh air duct 202, and the switch member 12 is suitable for being installed on the door cover 11 from front to back. That is, after the door cover 11 is nested on the fresh air duct 202, the switch member 12 can be installed on the door cover 11 from front to back, so that the installation of the switch device 10 can be further simplified, and the assembly process can be simplified.

[0056] The air duct assembly 100 may further include an air outlet frame 24. The air outlet frame 24 may be arranged to be connected to the air duct housing 20 and opposite to the air outlet 204. The air outlet frame 24 may be used to guide the air sent out of the air outlet 204 and guide the air flow sent out of the air outlet 204 to a predetermined position. In addition, the air outlet frame 24 may also play a protective role, preventing external impurities or hands from entering the circulating air duct 201, thereby reducing safety hazards.

[0057] Optionally, the switch device 10 may include a pull rod 123, which extends to the vicinity of the air outlet frame 24 and does not extend out of the air outlet frame 24. During use, the air outlet frame 24 can be removed and then the switch member 12 can be driven to move, thereby opening and closing the fresh air duct 202. When the air outlet frame 24 is not removed, it is difficult to adjust the opening and closing state of the fresh air duct 202, so that misoperation can be avoided.

[0058] For example, when the air duct assembly 100 (or the air conditioner 1000 in the present invention) is used in public places such as hotels, the open operation form of the switch device 10 can easily cause the switch device 10 to be over-adjusted and damaged. Therefore, after the pull rod 123 is set on the air outlet frame 24 in the present invention, damage caused by misadjustment or arbitrary adjustment of the switch device 10 can be avoided.

[0059] In addition, in combination with other embodiments of the present invention, the pull rod 123 is connected to the air outlet and extends forward.

[0060] In addition, the end of the pull rod 123 adjacent to the air outlet frame 24 is provided with a handle 124 perpendicular to the pull rod 123. In combination with other embodiments of the present invention, the end of the pull rod 123 adjacent to the air outlet frame 24 is the end of the pull rod 123 away from the door frame 11.

[0061] Optionally, the air duct shell 20 includes: a rear air duct 21 and a front air duct 22. The rear air duct 21 is provided with a fresh air inlet 205 and a circulation air duct 201. The front air duct 22 is arranged at the front side of the rear air duct 21, and is provided with a fresh air outlet 206 and an air guide 207. The fresh air outlet 206 and the fresh air inlet 205 are opposite to each other front and back and together form a fresh air duct 202, and the air guide 207 and the air outlet end of the circulation air duct 201 are opposite to each other front and back and together form an air supply port 204. Through the combination of the front and rear air ducts 21, the difficulty of manufacturing the air duct can be reduced, the molding of the air duct shell 20 is facilitated, and the molding efficiency is improved.

[0062] Optionally, the switch device 10 in the present invention can be configured such that at least a portion is disposed in the fresh air inlet 205, for opening the fresh air inlet 205, so that the installation of the switch device 10 can be facilitated. Moreover, in conjunction with the following description, the fresh air inlet 205 has a larger flow area than the fresh air outlet 206, so that the installation of the switch device 10 can be facilitated.

[0063] Optionally, the switch device 10 is configured to be suitable for being installed into the fresh air inlet 205 from the front side of the fresh air inlet 205. Thus, the installation of the switch device 10 can be facilitated.

[0064] In combination with the switch device 10 described in other embodiments of the present invention, the door cover 11 can be nested in the fresh air inlet 205, and the switch member 12 is suitable for being installed on the door cover 11 from front to back. In this way, the fresh air duct 202 and the air supply port 204 in the present invention are both arranged to extend in the front-to-back direction, so that the fresh air duct can be conveniently formed into the air supply port 204, thereby driving the introduction of fresh air through the wind wheel 23. In addition, the installation of the switch member 12 can be facilitated, and the movement of the switch member 12 in the front-to-back direction can be facilitated, so as to facilitate the opening and closing of the fresh air duct 202.

[0065] Optionally, the switch member 12 abuts against the rear side of the front air duct 22 in the open position. The front air duct 22 can be used to limit the switch member 12, thereby preventing the switch member 12 from being pulled out of the door pocket 11 and reducing the failure rate of the switch device 10.

[0066] Optionally, the air duct may further include: a cover plate 25, the cover plate 25 covers the front side of the rear air duct 21 to cover the circulation air duct 201, and the return air port 203 is formed on the cover plate 25. A complete circulation air duct 201 can be formed by combining the cover plates 25.

[0067] In the above-mentioned embodiment, the flow area of ​​the fresh air outlet 206 can be set to be smaller than the flow area of ​​the fresh air inlet 205, so that it is easier to generate negative pressure at the fresh air outlet 206, which facilitates the air flow into the fresh air duct 202 and sent to the room. Moreover, the fresh air inlet 205 with a larger flow area can provide more fresh air, thereby improving the fresh air delivery efficiency.

[0068] Optionally, the fresh air duct 202 can be connected to the air supply port 204. During operation, the airflow is sent out from the air supply port 204, and the airflow is also guided to be sent to the room through the fresh air duct 202, so that fresh air is provided to the room through the fresh air duct 202.

[0069] In addition, in order to facilitate the fresh air to be stably delivered to the room through the fresh air duct 202, the negative pressure formed at the outlet of the fresh air duct 202 during operation can be increased, so as to more conveniently introduce the fresh air into the room. In the present invention, there are many different ways to increase the negative pressure at the outlet of the fresh air duct 202, including at least forming negative pressure through the structure; and providing negative pressure by turning the wind wheel 23.

[0070] Optionally, the bottom surface of the air outlet 204 includes a first step surface 208, a second step surface 209 and a connecting surface 2010, the connecting surface 2010 is connected between the first step surface 208 and the second step surface 209, and the first step surface 208 is higher than the second step surface 209 to form a step, and the outlet of the fresh air duct 202 is arranged at the first step surface 208. In this way, during the operation of (the air conditioner 1000 or other equipment), an air flow path from the return air duct to the air outlet 204 can be formed through the circulation air duct 201, and since the step structure is arranged at the air outlet 204, the negative pressure formed at the step can be enhanced, so that the fresh air can be easily passed into the room from the circulating air duct.

[0071] Advantageously, the step may be arranged to be higher than the circulating air duct 201 .

[0072] In addition, in order to further enhance the generation of negative pressure, the present invention constructs the aforementioned first step surface 208 into an arc-shaped surface shape whose depth gradually decreases in the direction away from the second step surface 209. In this way, the negative pressure effect at the first step surface 208 can be further enhanced, and the suction force on the airflow in the fresh air duct 202 can be effectively enhanced, thereby increasing the fresh air volume.

[0073] Optionally, the present invention can also form a negative pressure at the outlet of the fresh air duct 202 by changing the structure of the circulating air duct 201. For example, the circulating air duct 201 is configured to be inclined from the return air port 203 to the air supply port 204 in a direction away from the fresh air duct 202, so that during operation, the airflow will be transported in a direction away from the fresh air duct 202 during the process of being transported from the return air port 203 to the air supply port 204, so that a negative pressure can be formed on the side away from its transport direction, that is, a negative pressure is formed at the location of the fresh air duct 202, thereby effectively improving the effect of the negative pressure.

[0074] In order to further improve the negative pressure generation effect, the rotation direction of the wind wheel 23 can be changed. For example, the wind wheel 23 is configured to rotate in the direction from the return air port 203 to the air supply port 204 away from the fresh air duct 202. In this way, during the rotation of the wind wheel 23, the air flow will be transported from the return air port 203 to the air supply port 204 away from the fresh air duct 202, so that the negative pressure effect at the location of the fresh air duct 202 can be further improved.

[0075] Optionally, in the present invention, the fresh air duct 202 penetrates the duct shell 20 in the front-to-back direction, so that the fresh air can be smoothly delivered to the room from back to front through the fresh air duct 202. The running trajectory of the fresh air in the fresh air duct 202 is relatively simple, avoiding the energy loss that may be caused when the duct changes direction.

[0076] The circulation air duct 201 extends in the longitudinal direction (refer to the up-down direction in the drawings), and the rear side of the air supply port 204 is closed and the front side is open for air supply, that is, the air supply port 204 is configured to supply air forward. The air supply port 204 is configured to extend in the transverse direction (refer to the left-right direction in the drawings), thereby forming a wide range of air supply. The fresh air duct 202 is arranged at one end of the air supply port 204 in the transverse direction, so as to facilitate the formation of negative pressure at the location of the fresh air duct 202, effectively improving the generation effect of negative pressure.

[0077] The transverse, longitudinal, and front-to-back directions are perpendicular to each other.

[0078] like Figure 20 to Figure 22 According to the switch device 10 of the embodiment of the present invention, the switch device 10 includes: a door cover 11 and a switch member 12. The door cover 11 is used to provide an air flow channel, and the switch member 12 is used to selectively open and close the air flow channel.

[0079] Specifically, the door pocket 11 is provided with a vent 101, which can be used for airflow to pass through. The vent 101 extends in the front-to-back direction, and the switch member 12 is movably connected to the door pocket 11 between an open position and a closed position, and the switch member 12 is configured to be suitable for being plugged into the door pocket 11 from front to back. Among them, the switch member 12 includes a damper 121, and the damper 121 is used to open and close the vent 101. When the switch member 12 is in the open position, the damper 121 opens the vent 101, and when the switch member 12 is in the closed position, the damper 121 closes the vent 101.

[0080] The switch member 12 is suitable for being plugged into the door frame 11 from front to back, that is, when the switch member 12 is installed on the door frame 11 from front to back, the switch member 12 does not have a non-elastic structure that interferes with the door frame 11. This includes but is not limited to: the switch member 12 can be installed on the door frame 11 from the front side of the door frame 11, and the switch member 12 and the front side of the door frame 11 are separated in the projection from front to back; or the switch member 12 can be installed on the door frame 11 from the front side of the door frame 11, and the switch member 12 and the front side of the door frame 11 have the ability to elastically deform at the place where the projection from front to back overlaps, so that during the installation of the switch member 12, it can give way through elastic deformation.

[0081] In addition, the switch member 12 can be plugged into the door frame 11, so that the movement of the switch member 12 can be guided by the plug-in structure, so that the switch member 12 can move smoothly.

[0082] According to the switch device 10 of the embodiment of the present invention, a complete switch device 10 is formed through a modular design through a combination of a door frame 11 and a switch member 12. The modular design can simplify the production and design of the switch device 10, reduce the impact of the production and installation of the switch device 10 on the surrounding structure, and also reduce the impact of the surrounding structure on the switch device 10, thereby facilitating the production, assembly and design of the switch device 10.

[0083] In addition, since the switch member 12 can be installed on the door frame 11 from front to back, the switch member 12 can be guided by the plug-in structure, which also simplifies the assembly process of the switch device 10 and improves the operating stability of the switch device 10.

[0084] For example, when the switch device 10 is applied to the fresh air duct 202 of the air conditioner 1000, that is, when the fresh air duct 202 is opened and closed by the switch device 10, the door cover 11 can be nested in the fresh air duct 202, and the switch member 12 can be smoothly installed on the door cover 11 from the front to the back, and it is no longer necessary to install the switch member 12 from the back side of the fresh air duct 202. The installation of the switch device 10 can be simplified, the installation efficiency of the switch device 10 can be improved, and the space during the installation process can be increased, and the installation process can be further simplified, and the installation efficiency of the switch device 10 can be improved.

[0085] The switch device 10 of the present invention can be applied to a wall-mounted air conditioner 1000, a cabinet air conditioner 1000, a mobile air conditioner 1000, etc., and can also be applied to a window air conditioner.

[0086] Taking the window unit as an example, the fresh air duct 202 is located in the indoor unit part, and the outdoor unit part is located at the rear side of the indoor unit part. The rear side of the fresh air duct 202 may be various pipelines or outdoor unit parts. In this way, when the switch component 12 is installed from the back to the front, there is not much space left for assembling the switch component 12, which may easily cause the switch component 12 to be damaged or unable to be installed. By setting the switch device 10 in the present invention, the switch component 12 can be installed from the front side of the door frame 11, and the installation space of the switch component 12 is large enough, which can effectively improve the assembly efficiency. Moreover, through plug-in matching, a certain guiding effect can be provided to the switch component 12 to ensure that the switch component 12 can be smoothly switched between the open position and the closed position.

[0087] In addition, the switch member 12 can have various forms, for example, a structure is used to close and open the vent 101, and a guiding opening structure and a guiding plug-in structure are provided to achieve guidance. In addition, the closed structure and the guiding structure can be integrated into one place, the closed structure is used to open and close the vent 101, and the guiding structure is used to movably cooperate with the vent 101 to achieve guidance.

[0088] Optionally, the damper 121 includes a closing portion 1211 and an embedded portion 1212, wherein the closing portion 1211 is configured to cover and open the vent 101. The embedded portion 1212 is connected to the closing portion 1211, and the embedded portion 1212 is adapted to be inserted into the vent 101 from front to back and be movably nested in the vent 101. The nesting cooperation between the embedded portion 1212 and the vent 101 can provide guidance for the forward and backward movement of the damper 121, and for the movement of the damper 121 between the open position and the closed position, so as to facilitate the damper 121 to move to a predetermined position along a predetermined trajectory, thereby smoothly opening and closing the vent 101 through the damper 121.

[0089] In addition, the closing portion 1211 can be configured in the form of a cover plate 25. For example, the closing portion 1211 can be configured as a plate portion that is perpendicular to the axis of the vent 101 (i.e., perpendicular to the front and rear directions). During the forward and backward movement of the closing portion 1211, the closing portion 1211 can cover the vent 101; when the closing portion 1211 is away from the vent 101, the closing portion 1211 can open the vent 101.

[0090] Optionally, when the closing portion 1211 closes the vent 101 , the closing portion 1211 may be embedded into the vent 101 to form a closed structure, or the closing portion 1211 may be covered with the outside of the vent 101 to form a closed structure.

[0091] Optionally, the embedded part 1212 includes: a first insert 1213 and a second insert 1214, the first insert 1213 is connected to the closed part 1211 and extends backward. The second insert 1214 is connected to the closed part 1211 and extends backward. The first insert 1213 and the second insert 1214 are spaced apart in a first direction (refer to the up and down direction in the figure), and the first direction is perpendicular to the front and back direction. The first insert 1213 and the second insert 1214 can provide guidance for the front and back movement of the damper 121, and guide the front and back movement of the damper 121. The first insert 1213 and the second insert 1214 are spaced apart, and a flow channel can be formed between the first insert 1213 and the second insert 1214. When the closed part 1211 opens the vent 101, the flow channel formed between the first insert 1213 and the second insert 1214 can guide the airflow to circulate, that is, the switch device 10 is adjusted to an open state.

[0092] Therefore, by providing the first insert 1213 and the second insert 1214 spaced apart from each other, it is possible to provide effective guidance for the movement of the damper 121 and to provide guidance for the movement of the switch member 12 at the same time.

[0093] Optionally, the first insert 1213 and the second insert 1214 are respectively embedded in the vent 101 on opposite sides in the first direction. The cooperation between the first insert 1213 and the second insert 1214 will constrain the freedom of the embedded part 1212 in the first direction, so that the embedded part can move back and forth stably, thereby further improving the guiding effect of the damper 121 and facilitating the stable movement of the damper 121.

[0094] Optionally, the width of the first insert 1213 in the second direction (refer to the left-right direction in the figure) is the same as the width of the vent 101, and the second direction is perpendicular to the first direction and the front-back direction. The width of the first insert 1213 is comparable to the width of the vent 101, so that the freedom of the first insert 1213 in the second direction is constrained, thereby improving the stability of the front-back movement of the inner insert.

[0095] Optionally, the second insert 1214 includes: a first part 1215 and a second part 1216. The first part 1215 is connected to the closed part 1211 and extends backward. The second part 1216 is connected to the first part 1215 and extends backward, wherein the width dimension of the first part 1215 in the second direction is the same as the width dimension of the vent 101, and the width dimension of the second part 1216 in the second direction is smaller than the width dimension of the vent 101, and the second direction is perpendicular to the first direction and the front-back direction. The first part 1215 of the second insert 1214 can also constrain the freedom of the embedded part 1212 in the second direction, thereby ensuring the stable movement of the embedded part 1212. In addition, by providing the second part 1216, the space occupied by the second insert 1214 in the vent 101 can be reduced, the space utilization rate is improved, and the influence of the embedded part 1212 on the flow rate of the airflow is reduced.

[0096] In addition, the second insert 1214 is configured to have a first part 1215 and a second part 1216, so that the space occupied by the embedded part 1212 in the vent 101 can be adjusted. By moving the embedded part to different positions, the flow area of ​​the vent 101 can be adjusted, thereby increasing the function of adjusting the flow rate of the airflow.

[0097] Optionally, the first insert 1213 is in the shape of a plate. The first insert 1213 can be close to three adjacent inner sides of the vent 101, which can effectively improve the stability of guiding the inner insert 1212, and the first insert 1213 in the shape of a plate can effectively reduce the space it occupies and reduce its impact on the flow rate of the airflow.

[0098] Optionally, the second insert 1214 is in a hollow tubular shape extending along a second direction, and the second direction is perpendicular to the first direction and the front-rear direction. This reduces the material usage of the switch member 12 and saves materials. In addition, the second insert 1214 is set to be in a hollow tubular shape, and when the switch member 12 is injection molded, the problem of cold shrinkage can be avoided, and the formation of poor injection molding can be reduced.

[0099] Optionally, the door cover 11 further includes a guide opening 102 whose axis extends in the front-to-back direction. The switch member 12 further includes: a guide portion 122, which is suitable for being inserted into the guide opening 102 from front to back and being movably nested in the guide opening 102, and the guide portion 122 is connected to the damper 121. By providing the guide opening 102 and the guide portion 122, further guidance can be provided for the switch member 12, facilitating the stable movement of the switch member 12. Moreover, a guide structure of a slider guide groove is also formed between the guide portion 122 and the damper 121, and between the vent 101 and the guide opening 102, further improving the effect of guiding the switch member 12.

[0100] Optionally, the door cover 11 is in a tubular shape extending in the front-to-back direction, the rear end of the door cover 11 is open and wedge-shaped, and the vents 101 and the guide openings 102 are arranged at intervals in a direction perpendicular to the front-to-back direction and are arranged at the front end of the door cover 11. This facilitates the installation of the door cover 11 and reduces the use of materials. Moreover, when the door cover 11 is installed in the fresh air duct 202, the stability of the door cover 11 can be improved.

[0101] Optionally, a limit portion 103 is provided on the switch member 12, and when the switch member 12 is in the closed position, the limit portion 103 abuts against the front side of the door frame 11. The limit portion 103 can provide guidance for the switch member 12, so that the switch member 12 can be stably maintained in the closed position, avoiding excessive movement of the switch member 12 and causing it to be unusable.

[0102] Optionally, in the aforementioned embodiment of the present invention, a damper 121 and a guide portion 122 are included, and a step can be provided on the outer peripheral surface of at least one of the damper 121 and the guide portion 122 to form a limiting portion 103. For example, a step can be provided on the opposite surfaces of the damper 121 and the guide portion 122 to form the limiting portion 103. When the switch member 12 is in the closed position, the limiting portions 103 on the damper 121 and the guide portion 122 both abut against the door frame 11.

[0103] Furthermore, at least one of the aforementioned vent 101 and guide opening 102 has a flange structure at its periphery, and when the switch member 12 is in the closed position, the limit portion 103 can be pressed against the flange structure. In addition, the flange structure can effectively improve the structural strength of the door frame 11.

[0104] Optionally, the switch member 12 further includes a pull rod 123, which is connected to the damper 121 and extends forward. The switch member 12 can be pulled by the pull rod 123 to complete the switching of the damper 121 between the closed position and the open position, thereby further simplifying the operation.

[0105] In addition, a handle 124 perpendicular to the pull rod 123 is provided at one end of the pull rod 123 away from the door cover 11. The pull rod 123 can be easily pulled by the handle 124.

[0106] like Figure 23-Figure 25 The air conditioner 1000 according to the embodiment of the present invention comprises: an air duct assembly 100 and a heat exchanger 300 . The air duct assembly 100 is the air duct assembly 100 described above. The heat exchanger 300 is disposed in the circulation air duct 201 .

[0107] According to the air conditioner 1000 of the embodiment of the present invention, fresh air can be selectively introduced or not introduced, and after adding a fresh air introduction structure, simple assembly can still be achieved.

[0108] Optionally, the switch member 12 abuts against the rear side of the heat exchanger 300 in the open position, so as to maintain the stability of the switch member 12 and prevent the switch member 12 from being pulled out of the door pocket 11.

[0109] In the present invention, the switch component 12 of the switch device 10 can be installed from the front of the fresh air duct to improve production efficiency; and the pull rod 123 of the switch component 12 is hidden by the air outlet frame 24 after installation. Specifically, the front end of the pull rod 123 is hidden behind the air outlet frame 24 or inside the air outlet frame 24 and will not extend out of the air outlet frame; in addition, a handle 124 is protruding from the pull rod 123, and the gear position of the fresh air door 121 can be changed by the handle 124.

[0110] In the description of the present invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0111] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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 at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0112] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0113] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0114] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0115] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An air duct assembly, characterized in that: The air duct assembly comprises: An air duct shell, wherein a circulating air duct and a fresh air duct are formed in the air duct shell, and the air duct shell is provided with a return air port and an air supply port connected to the circulating air duct, and the fresh air duct is connected to the air supply port; A wind wheel, wherein the wind wheel is arranged in the circulating air duct; A switch device, the switch device is installed on the air duct housing and is used to open and close the fresh air duct; The bottom surface of the air supply port includes a first step surface, a second step surface and a connecting surface, the connecting surface is connected between the first step surface and the second step surface, and the first step surface is higher than the second step surface to form a step, and the outlet of the fresh air duct is arranged on the first step surface; The first step surface is configured as an arcuate surface whose depth gradually decreases in a direction away from the second step surface; The circulation air duct is configured to be inclined from the return air port to the supply air port in a direction away from the fresh air duct; The wind wheel is configured to rotate in a direction from the return air port to the supply air port and in a direction away from the fresh air duct.

2. The air duct assembly according to claim 1, characterized in that: The fresh air duct penetrates the duct shell in the front-to-back direction, the circulating air duct extends in the longitudinal direction, the rear side of the air supply port is closed and the front side is open for air supply, the air supply port is configured to extend in the transverse direction, and the fresh air duct is arranged at one end of the air supply port in the transverse direction, and the transverse, longitudinal and front-to-back directions are perpendicular to each other.

3. The air duct assembly according to claim 1, characterized in that: The air duct shell comprises: A rear air duct, wherein the rear air duct is provided with a fresh air inlet and the circulating air duct; A front air duct, wherein the front air duct is arranged at the front side of the rear air duct, and a fresh air outlet and an air guide port are provided on the front air duct, the fresh air outlet and the fresh air inlet are opposite to each other front and back and jointly construct the fresh air duct, and the air guide port and the air outlet end of the circulating air duct are opposite to each other front and back and jointly construct the air supply port.

4. The air duct assembly according to claim 3, characterized in that: The flow area of ​​the fresh air outlet is smaller than the flow area of ​​the fresh air inlet.

5. The air duct assembly according to claim 3, characterized in that: A portion of the switch device is disposed in the fresh air inlet to open and close the fresh air inlet.

6. The air duct assembly according to claim 5, characterized in that: The switch device is configured to be suitable for being installed into the fresh air inlet from the front side of the fresh air inlet.

7. The air duct assembly according to claim 1, characterized in that: The air duct assembly also includes: An air outlet frame is connected to the air duct shell and is opposite to the air supply port. The switch device includes a pull rod, which extends to the vicinity of the air outlet frame and does not extend out of the air outlet frame.

8. The air duct assembly according to claim 7, characterized in that: A handle perpendicular to the pull rod is provided on one end of the pull rod adjacent to the air outlet frame.

9. An air conditioner, characterized in that: include: An air duct assembly, wherein the air duct assembly is an air duct assembly according to any one of claims 1 to 8; A heat exchanger is arranged in the circulating air duct.

Images