Air conditioner air inlet duct assembly and air conditioner indoor unit

Abstract

The present invention relates to an air inlet duct assembly of an air conditioner and an indoor unit of an air conditioner, and belongs to the technical field of fresh air system of an air conditioner. The air inlet duct assembly of the air conditioner in the present invention comprises a fresh air duct and an air conditioning piping installation pipe, the fresh air duct and the air conditioning piping installation pipe are both arranged horizontally or obliquely downward, the fresh air duct is located below the air conditioning piping installation pipe, the fresh air duct and the air conditioning piping installation pipe are fixedly connected to form an integral pipe fitting with an outer cylindrical surface, the front end of the fresh air duct has an air inlet, the front end of the air conditioning piping installation pipe is cantilevered relative to the front end of the fresh air duct to form a front end rain shielding portion, rain shields are respectively installed on both sides of the front end of the fresh air duct, the rain shields are rotatably arranged by a rotating shaft, when the rain shields are in a closed state, the outer surface of the rain shields does not exceed the outer cylindrical surface of the integral pipe fitting, and when the rain shields are in an open state, the rain shields form a rain shielding structure on both sides of the front end of the fresh air duct. The present invention is not only easy to install, but also has a good rainproof effect on the fresh air inlet.

Description

Technical Field

[0001] The invention relates to an air inlet pipe assembly of an air conditioner and an indoor unit of an air conditioner, belonging to the technical field of fresh air systems of air conditioners. Background Art

[0002] With the development and progress of science and technology, many air conditioners have been equipped with fresh air treatment devices, which can introduce fresh air from the outside to continuously replace the indoor air, keeping the indoor air fresh and clean.

[0003] In order to reduce the difficulty of installing fresh air air conditioners and reduce damage to indoor decoration, the fresh air air conditioners are installed as directly as possible using the reserved air conditioning pipe holes on the wall. The fresh air duct is wrapped together with the air conditioning pipe and then directly passes from the room to the outside. However, the disadvantage is that it is limited by the requirement of the air duct passing through the wall, and it is not easy to directly design an effective rainproof structure at the entrance of the fresh air duct. When the fresh air force is strong enough, rainwater is easily sucked into the air duct and collected at the indoor fan inlet joint or inside the fan, resulting in a decrease in the fresh air volume, abnormal noise when the fresh air blows through the rain, and even water leakage in the air conditioner indoor unit and water blowing from the fresh air outlet.

[0004] In order to solve the problem of rainwater being sucked into the air duct by the fresh air fan, the next best option is to install a rain cover structure at the inlet end of the outdoor fresh air duct. This adds additional risks to the outdoor high-altitude installation operation. In some cases, the installers cannot reach the wall hole where the air-conditioning pipe exits, so they cannot install the rain cover and cannot ensure that rainwater does not enter the air duct.

[0005] When installing a fresh air rain shield, it is required that the air inlet direction of the rain shield be facing downward to prevent rain from entering the air duct. However, in some air-conditioning installation scenarios, the installer cannot completely ensure that the air inlet direction of the rain shield is facing downward. In this case, there is still a risk that the rain shield cannot block the rain. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an air inlet duct assembly for an air conditioner, which is not only easy to install but also has a good rainproof effect on the fresh air inlet.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: an air inlet duct assembly of an air conditioner, including a fresh air duct and an air-conditioning piping installation pipe, the fresh air duct and the air-conditioning piping installation pipe are both arranged horizontally or obliquely downward, the fresh air duct is located below the air-conditioning piping installation pipe, the fresh air duct and the air-conditioning piping installation pipe are fixedly connected to form an integral pipe fitting with an outer cylindrical surface, the front end of the fresh air duct has an air inlet, the front end of the air-conditioning piping installation pipe is cantilevered relative to the front end of the fresh air duct to form a front end rain shielding portion, rain shields are respectively installed on both sides of the front end of the fresh air duct, the rain shields are rotatably arranged by a rotating shaft, the axis of the rotating shaft is parallel to the axis of the fresh air duct, the rain shield has an open state and a closed state, when the rain shield is in the closed state, the outer surface of the rain shield does not exceed the outer cylindrical surface of the integral pipe fitting, when the rain shield is in the open state, the rain shield forms a rain shield structure on both sides of the front end of the fresh air duct.

[0008] Furthermore, the rain shield is equipped with an elastic reset member, and when the elastic reset member is in a natural state, the rain shield is in an open state.

[0009] Furthermore, the elastic reset element is a torsion spring.

[0010] Furthermore, the fresh air duct and the air conditioning piping installation pipe are connected by a snap-on structure; both sides of the lower part of the air conditioning piping installation pipe are provided with snap-on grooves, which are arranged along the axial direction of the air conditioning piping installation pipe, and both sides of the upper part of the fresh air duct are provided with connecting ribs that are compatible with the snap-on grooves.

[0011] Furthermore, the new air duct includes a first air duct located at its front end and a second air duct located at its rear end, the outer diameter of the first air duct is smaller than the outer diameter of the second air duct, and the end of the first air duct is inserted into the inner hole of the second air duct to achieve docking between the two; the rain shield is installed at the location of the first air duct.

[0012] Furthermore, the front end of the air conditioning piping installation pipe exceeds the air inlet by a safe axial distance greater than or equal to 50 mm.

[0013] Furthermore, the front end face and the bottom surface of the fresh air duct are both provided with air inlets, and the axial safety distance of the rain shield beyond the air inlet in the front-to-back direction is greater than or equal to 30 mm.

[0014] Furthermore, a water stop edge is arranged at the air-avoiding position of the rotating shaft of the rain shield.

[0015] Furthermore, a drain trough is arranged on the bottom wall of the fresh air duct, and the position of the drain trough is matched with the air-avoiding position of the rotating shaft of the rain shield.

[0016] The present invention also provides an air conditioner indoor unit which is not only easy to install but also has good rainproof effect on the fresh air inlet. The air conditioner indoor unit has the above-mentioned air conditioner air inlet duct assembly.

[0017] The beneficial effects of the present invention are as follows: the fresh air duct and the air conditioning piping installation pipe are fixedly connected to form an integral pipe fitting with an outer cylindrical surface, the diameter of the outer cylindrical surface matches the wall hole, and when the rain shield is in a closed state, the outer surface of the rain shield does not exceed the outer cylindrical surface of the integral pipe fitting, thereby not affecting the integral pipe fitting from passing through the wall hole. During implementation, the installer directly passes the integral pipe fitting through the wall hole indoors, without the need to increase the outdoor high-altitude operation risk caused by the fresh air function of the air conditioner; after the fresh air duct is out of the wall, the rain shields on both sides of the pipe opening can be opened automatically to prevent rainwater from being sucked into the fresh air duct by the fresh air fan, and at the same time, the front end rain shield formed by the overhang of the air conditioning piping installation pipe can effectively achieve all-round rain protection, thereby avoiding the problems of reduced fresh air volume, abnormal noise caused by fresh air blowing through rainwater, water leakage in the air conditioner indoor unit, and water blowing from the fresh air outlet to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention when the rain shield is in a closed state.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention when the rain shield is in an open state.

[0020] Figure 3 It is a structural schematic diagram of the fresh air duct assembly and the air conditioning piping assembly of the present invention when they are in a separated state.

[0021] Figure 4 It is a schematic diagram of the exploded structure of the new air duct assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of the design requirements of the rainproof structure size and the location of the air inlet and the drain trough of the present invention.

[0023] Parts markings in the figure: fresh air duct 10, air inlet 11, connecting rib 12, drain trough 13, first air duct 14, second air duct 15, air conditioning piping installation pipe 20, slot 21, rain shield 30, rotating shaft 31, elastic reset member 32, water stop edge 33, limit slot 34. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figures 1 to 5As shown, the air inlet duct assembly of the air conditioner in the present invention includes a fresh air duct 10 and an air conditioning piping installation pipe 20, the fresh air duct 10 and the air conditioning piping installation pipe 20 are arranged horizontally or obliquely downward, the fresh air duct 10 is located below the air conditioning piping installation pipe 20, the fresh air duct 10 and the air conditioning piping installation pipe 20 are fixedly connected to form an integral pipe fitting with an outer cylindrical surface, the front end of the fresh air duct 10 has an air inlet 11, the front end of the air conditioning piping installation pipe 20 is cantilevered relative to the front end of the fresh air duct 10 to form a front end rain shielding portion, rain shields 30 are respectively installed on both sides of the front end of the fresh air duct 10, the rain shield 30 is rotatably arranged by a rotating shaft 31, the axis of the rotating shaft 31 is parallel to the axis of the fresh air duct 10, the rain shield 30 has an open state and a closed state, when the rain shield 30 is in the closed state, the outer surface of the rain shield 30 does not exceed the outer cylindrical surface of the integral pipe fitting, when the rain shield 30 is in the open state, the rain shield 30 forms a rain shield structure on both sides of the front end of the fresh air duct 10. The installation method of the rotating shaft 31 only needs to be able to realize the rotation of the rain shield 30 relative to the fresh air duct 10. Since the fresh air duct 10 and the air-conditioning piping installation pipe 20 are fixed together, the specific rotation connection point can be on the fresh air duct 10 or on the air-conditioning piping installation pipe 20.

[0026] It should be noted that the outer cylindrical surface of the integral pipe fitting in the present invention should be understood in a broad sense, and the outer cylindrical surface can be discontinuous, as long as it meets the requirement of being able to pass directly through the wall hole as a whole. Correspondingly, the diameter size of the outer cylindrical surface should match the wall hole. During implementation, the installer directly passes the integral pipe fitting through the wall hole indoors, without the need to increase the risk of outdoor high-altitude operations caused by the fresh air function of the air conditioner; after the fresh air duct 10 is out of the wall, the rain shields 30 on both sides of the pipe mouth can be opened automatically. The combination of the rain shields 30 on both sides of the pipe mouth and the front end rain shield formed by the overhang of the air conditioning piping installation pipe 20 can effectively achieve all-round rain protection, thereby avoiding the problems of reduced fresh air volume, abnormal noise caused by fresh air blowing through rainwater, water leakage in the air conditioner indoor unit, and water blowing from the fresh air outlet to the greatest extent.

[0027] It is understandable that the rain shield 30 can be opened automatically by relying on the gravity of the rain shield 30 itself, but the wind resistance of this structural design is relatively weak. The preferred solution is: the rain shield 30 is equipped with an elastic reset member 32. When the elastic reset member 32 is in a natural state, the rain shield 30 is in an open state. The elastic force of the elastic reset member 32 provides a supporting force, which can effectively maintain the rain shield 30 in an open state. When closing the rain shield 30, the reaction force of the elastic reset member 32 must be overcome first.

[0028] The elastic reset member 32 is preferably a torsion spring. The specific installation method of the torsion spring can be designed to match the rotating connection structure. In this embodiment, the fixed end (non-deformed end) of the torsion spring is arranged on the air conditioning piping installation pipe 8, and the other end of the torsion spring is fixed in the limit slot 34 of the rain shield 30. During implementation, the installer applies external force to twist and deform the torsion spring, so that the rain shield 30 is closed and tightly wraps the outer circle of the new air duct 10. At this time, the outer diameter of the new air duct 10 and the rain shield 30 after the combination is smaller than the wall hole, and it can pass through the wall hole smoothly; when the new air duct 10 and the rain shield 30 are out of the wall, the elastic force of the torsion spring is released to restore the deformation, and the rain shield 30 opens automatically to prevent rainwater from entering the new air duct 10. Of course, a compression spring can also be used instead of a torsion spring, as long as the requirements of external force closure and self-recovery of the rain shield 30 can be achieved.

[0029] The fresh air duct 10 and the air conditioning piping installation pipe 20 can be of an integrated design or a split design, and then fixed and assembled. For the convenience of processing and assembly, the preferred solution is that the fresh air duct 10 and the air conditioning piping installation pipe 20 are connected by a buckle structure. To make the connection structure reliable, the preferred connection solution is that both sides of the lower part of the air conditioning piping installation pipe 20 are provided with a card slot 21, and the card slot 21 is arranged along the axial direction of the air conditioning piping installation pipe 20, and both sides of the upper part of the fresh air duct 10 have connecting ribs 12 that are compatible with the card slot 21.

[0030] The new air duct 10 can be an integrated design or a segmented assembly design. For the convenience of processing and assembly, the preferred solution is: the new air duct 10 includes a first air duct 14 located at the front end thereof and a second air duct 15 located at the rear end thereof. The outer diameter of the first air duct 14 is smaller than the outer diameter of the second air duct 15. The end of the first air duct 14 is inserted into the inner hole of the second air duct 15 to achieve the connection between the two. The rain shield 30 is installed at the location of the first air duct 14. Since the outer surface of the rain shield 30 does not exceed the outer cylindrical surface of the integral pipe when the rain shield 30 is in the closed state, it is necessary to design a rain shield avoidance structure at the front end of the new air duct 10. The combined design of the first air duct 14 and the second air duct 15 can not only meet the installation requirements of the rain shield 30, but also the second air duct 15 can adopt an equal-section design, can be directly produced by the extrusion tube molding process, and is also more convenient to assemble.

[0031] To effectively ensure the rainproof effect, the front end of the air conditioning pipe installation pipe 20 exceeds the air inlet 11 by an axial safety distance of greater than or equal to 50 mm. Figure 5 Marked as A in the.

[0032] To improve the air intake efficiency, the preferred method of the air inlet 11 is as follows: the front end face and the bottom surface of the fresh air duct 10 are both provided with the air inlet 11. To effectively ensure the rainproof effect, the axial safety distance of the rain shield 30 in the front and rear directions beyond the air inlet 11 is greater than or equal to 30 mm. The axial safety distance size corresponding to the rain shield 30 on the front side is Figure 5 Marked as B, the axial safety distance dimension corresponding to the rear side of the rain shield 30 is Figure 5 Marked as C.

[0033] In order to effectively ensure the rainproof effect, a water stop edge 33 is provided at the rotation axis avoidance position of the rain shield 30. A further preferred solution is that a drainage groove 13 is provided on the bottom wall of the fresh air duct 10, and the position of the drainage groove 13 is adapted to the rotation axis avoidance position of the rain shield 30. Under extreme working conditions, even if a small amount of rainwater enters the fresh air duct 10 from the rotation axis avoidance position, it can be discharged by using the drainage groove 13. The drainage groove 13 is generally designed in front of the bottom air inlet.

[0034] After the air inlet duct assembly of the air conditioner is implemented, the air conditioner indoor unit of the present invention can be obtained. Other main components of the air conditioner indoor unit of the present invention can be implemented with reference to the prior art.

Claims

1. An air inlet duct assembly for an air conditioner, comprising a fresh air duct (10) and an air conditioner piping installation pipe (20), characterized in that: The fresh air duct (10) and the air conditioning pipe installation pipe (20) are both arranged horizontally or obliquely downward, the fresh air duct (10) is located below the air conditioning pipe installation pipe (20), the fresh air duct (10) and the air conditioning pipe installation pipe (20) are fixedly connected to form an integral pipe having an outer circular surface, the front end of the fresh air duct (10) has an air inlet (11), the front end of the air conditioning pipe installation pipe (20) is cantilevered relative to the front end of the fresh air duct (10) to form a front end rain shielding portion, and the front end of the fresh air duct (10) is provided with an air inlet (11). Rain shields (30) are respectively installed on both sides of the end. The rain shields (30) are rotatably arranged via a rotating shaft (31). The axis of the rotating shaft (31) is parallel to the axis of the fresh air duct (10). The rain shields (30) have an open state and a closed state. When the rain shields (30) are in the closed state, the outer surface of the rain shields (30) does not exceed the outer circumferential surface of the integral pipe. When the rain shields (30) are in the open state, the rain shields (30) form a rain shield structure on both sides of the front end of the fresh air duct (10).

2. The air inlet duct assembly of the air conditioner according to claim 1, characterized in that: The rain shield (30) is provided with an elastic reset member (32). When the elastic reset member (32) is in a natural state, the rain shield (30) is in an open state.

3. The air inlet duct assembly of the air conditioner according to claim 2, characterized in that: The elastic reset member (32) is a torsion spring.

4. The air inlet duct assembly of the air conditioner according to claim 1, characterized in that: The fresh air duct (10) and the air conditioning piping installation pipe (20) are connected via a snap-fit ​​structure; both sides of the lower part of the air conditioning piping installation pipe (20) are provided with snap-fit ​​grooves (21), the snap-fit ​​grooves (21) are arranged along the axial direction of the air conditioning piping installation pipe (20), and both sides of the upper part of the fresh air duct (10) are provided with connecting ribs (12) adapted to the snap-fit ​​grooves (21).

5. The air inlet duct assembly of the air conditioner according to claim 1, characterized in that: The fresh air duct (10) comprises a first air duct (14) located at the front end thereof and a second air duct (15) located at the rear end thereof, the outer diameter of the first air duct (14) being smaller than the outer diameter of the second air duct (15), and the end of the first air duct (14) being inserted into the inner hole of the second air duct (15) to achieve docking of the two; and a rain shield (30) being installed at the location of the first air duct (14).

6. The air inlet duct assembly of an air conditioner according to claim 1, characterized in that: The front end of the air conditioning piping installation pipe (20) exceeds the air inlet (11) by an axial safety distance greater than or equal to 50 mm.

7. The air inlet duct assembly of an air conditioner according to claim 1, characterized in that: The front end face and the bottom surface of the fresh air duct (10) are both provided with an air inlet (11), and the rain shield (30) exceeds the air inlet (11) by an axial safety distance of greater than or equal to 30 mm in the front-to-back direction.

8. The air inlet duct assembly of an air conditioner according to any one of claims 1 to 7, characterized in that: A water-stop edge (33) is provided at a space-avoiding position of the rotating shaft of the rain shield (30).

9. The air inlet duct assembly of the air conditioner according to claim 8, characterized in that: The bottom wall of the fresh air duct (10) is provided with a drain groove (13), and the position of the drain groove (13) is matched with the air-avoiding position of the rotating shaft of the rain shield (30).

10. An air conditioner indoor unit, characterized in that: An air-conditioner air inlet duct assembly as claimed in any one of claims 1 to 9.

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