Mute air duct of mobile air conditioner and mobile air conditioner

Abstract

The utility model discloses a mute air duct of a mobile air conditioner and the mobile air conditioner. The mute air duct of the mobile air conditioner comprises an air duct body, and an air inlet is formed in one side of the air duct body so that air can enter the air duct body; the motor is fixed to the other side, opposite to the air inlet, of the air duct body, and the motor and the air inlet are coaxially arranged; and the centrifugal fan blades are arranged on the motor in a sleeving mode and extend towards the air inlet, and the motor drives the centrifugal fan blades to rotate so as to suck air into the air duct body through the air inlet and exhaust the air. Wherein a circle of mute baffle plate is formed by surrounding the air inlet and vertically extending towards the centrifugal fan blade, and the mute baffle plate surrounds the centrifugal fan blade so as to reduce the noise when the air enters the air duct body.

Description

Technical Field

[0001] This application relates to the field of portable air conditioning technology, and in particular to a silent air duct for a portable air conditioner and a portable air conditioner. Background Technology

[0002] Currently, portable air conditioners require a centrifugal fan to expel exhaust gases during use in order to regulate indoor temperature. Existing technology typically involves fixing the centrifugal fan inside the exhaust duct of the portable air conditioner, drawing air into the duct and then expelling it through centrifugal force. However, this design often results in abnormal noise from the exhaust duct during operation, negatively impacting the user experience.

[0003] Therefore, existing technologies still need improvement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a silent air duct for a portable air conditioner and a portable air conditioner, which aims to solve the problem of abnormal noise that occurs during the operation of the centrifugal fan of the portable air conditioner in the prior art.

[0005] This application provides a silent air duct for a portable air conditioner, comprising:

[0006] The air duct body has an air inlet on one side to allow air to enter the air duct body;

[0007] A motor is fixed on the other side of the air duct body opposite to the air inlet and is coaxially arranged with the air inlet;

[0008] Centrifugal fan blade, which is sleeved on the motor and extends toward the air inlet. The motor drives the centrifugal fan blade to rotate so as to draw air into the air duct body through the air inlet and discharge it.

[0009] A sound-absorbing baffle extends vertically around the air inlet toward the centrifugal fan blades to reduce noise when air enters the duct body.

[0010] In one embodiment, a ring groove is provided between the silent baffle and the air inlet, the ring groove being provided at the end of the centrifugal fan blade extending toward the air inlet, so that air drawn into the air duct body can flow through.

[0011] In one embodiment, a raised ring is formed between the annular groove and the air inlet, and the raised ring cooperates with the silent baffle to accommodate one end of the centrifugal fan blade extending toward the air inlet within the annular groove.

[0012] In one embodiment, the centrifugal fan blade includes:

[0013] A connecting part is sleeved on the rotating shaft of the motor to drive the centrifugal fan blades to rotate with the rotating shaft;

[0014] The blade portion is arranged axially around and parallel to the axis of rotation;

[0015] The protrusion is located at the end of the blade portion away from the connecting portion and extends toward the air inlet. The protrusion, the protrusion and the silent baffle cooperate to form a flow channel for air that is not drawn into the blade portion to enter the air duct body.

[0016] In one embodiment, the centrifugal fan blade has a rim surrounding the protrusion, and a gap is provided between the rim and the protrusion to allow air to pass through.

[0017] In one embodiment, the thickness of the sound-silencing baffle is less than the distance between the sound-silencing baffle and the edging.

[0018] In one embodiment, the duct body includes:

[0019] A first air duct assembly, wherein the air inlet is disposed on the first air duct assembly;

[0020] The second air duct assembly is fastened to the first air duct assembly to form a spiral air duct of the air duct body, and an air outlet is formed at the top of the air duct body.

[0021] In one embodiment, a plurality of snap-fit ​​structures are provided around the first air duct component, and a plurality of snap-hole structures are provided on the second air duct component corresponding to the snap-fit ​​structures. The snap-fit ​​structures and the snap-hole structures cooperate to achieve the snap-fit ​​and holding of the first air duct component and the second air duct component, forming the air duct body.

[0022] In one embodiment, the second air duct assembly has a mounting through hole corresponding to the air inlet, and the motor is fixedly mounted on the second air duct assembly through the mounting through hole.

[0023] This application also provides a portable air conditioner, including a silent air duct as described in any of the preceding claims.

[0024] This application discloses a silent air duct for a portable air conditioner and the portable air conditioner itself. The silent air duct of the portable air conditioner includes: an air duct body with an air inlet on one side for air to enter; a motor fixed to the other side of the air duct body opposite the air inlet and coaxially arranged with the air inlet; and a centrifugal fan blade sleeved on the motor and extending towards the air inlet. The motor drives the centrifugal fan blade to rotate, drawing air into the air duct body through the air inlet and discharging it. A silent baffle extends vertically around the air inlet towards the centrifugal fan blade, reducing noise when air enters the air duct body. This application effectively reduces the noise of the centrifugal fan during use by providing a silent baffle surrounding the centrifugal fan blade at the air inlet of the air duct body, thus providing a better user experience. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a perspective view of the silent air duct of the portable air conditioner described in this application;

[0027] Figure 2 This is an assembly diagram of the silent air duct of the portable air conditioner described in this application;

[0028] Figure 3 This is an exploded schematic diagram of the silent air duct of the portable air conditioner described in this application;

[0029] Figure 4 This is an exploded view of the silent air duct of the portable air conditioner described in this application from another angle;

[0030] Figure 5 This is a cross-sectional schematic diagram of the silent air duct of the portable air conditioner described in this application;

[0031] Figure 6 yes Figure 5 Enlarged view of section A in the middle. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present application.

[0033] In existing technologies, when portable air conditioners use centrifugal fans to expel internal exhaust gas, noise is often generated between the centrifugal fan and the exhaust duct, affecting the user experience. To solve this technical problem, this application discloses a silent air duct and portable air conditioner. By setting a silent baffle at the air inlet of the exhaust duct corresponding to the centrifugal fan blades, the noise during the operation of the centrifugal fan is effectively reduced, providing a better user experience.

[0034] The technical solution of this application will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, the silent air duct of the portable air conditioner described in this application includes an air duct body 100, a motor 200, and a centrifugal fan blade 300. The air duct body 100 has an air inlet 101 on one side to allow air to enter. The motor 200 is fixed to the other side of the air duct body 100 opposite to the air inlet 101 and is coaxially arranged with the air inlet 101. The centrifugal fan blade 300 is sleeved on the motor 200 and extends towards the air inlet 101. The motor 200 drives the centrifugal fan blade 300 to rotate, drawing air into the air duct body 100 through the air inlet 101 and discharging it. A silent baffle 130 extends vertically around the air inlet 101 towards the centrifugal fan blade 300 to reduce noise when air enters the air duct body 100.

[0036] Furthermore, such as Figure 2 and Figure 3 As shown, a ring groove 140 is provided between the silent baffle 130 and the air inlet 101. The ring groove 140 is provided at the end of the centrifugal fan 300 that extends toward the air inlet 101, so that the air drawn into the air duct body 100 can flow through it.

[0037] Furthermore, such as Figure 2 and Figure 3As shown, a protrusion 150 is formed between the annular groove 140 and the air inlet 101. The protrusion 150 cooperates with the silent baffle 130 to accommodate one end of the centrifugal fan blade 300 extending toward the air inlet 101 within the annular groove 140.

[0038] Furthermore, such as Figure 4 As shown, the centrifugal fan 300 includes a connecting portion 310, a blade portion 320, and a protrusion 330. The connecting portion 310 is sleeved on the rotating shaft 210 of the motor 200 to drive the centrifugal fan 300 to rotate with the rotating shaft 210. The blade portion 320 is arranged around and parallel to the axial direction of the rotating shaft 210. The protrusion 330 is located at the end of the blade portion 320 away from the connecting portion 310 and extends towards the air inlet 101. The protrusion 330, the protrusion 150, and the silent baffle 130 cooperate to form a flow channel for air not drawn into the blade portion 320 to enter the air duct body 100.

[0039] Furthermore, such as Figure 4 and Figure 6 As shown, the centrifugal fan blade 300 is provided with a rim 340 around the protrusion 330, and a gap is provided between the rim 340 and the protrusion 330 to allow air to pass through.

[0040] Furthermore, such as Figure 6 As shown, the thickness of the noise-reducing baffle 130 is less than the distance between the noise-reducing baffle 130 and the edging 340.

[0041] Furthermore, such as Figure 2 and Figure 5 As shown, the air duct body 100 includes a first air duct assembly 110 and a second air duct assembly 120. The air inlet 101 is disposed on the first air duct assembly 110; the second air duct assembly 120 is engaged with the first air duct assembly 110 to form a spiral air duct of the air duct body 100, and an air outlet 102 is formed at the top of the air duct body 100.

[0042] Furthermore, such as Figure 3 and Figure 4 As shown, a plurality of snap-fit ​​structures 111 are provided around the first air duct assembly 110, and a plurality of snap-fit ​​structures 121 are provided on the second air duct assembly 120 corresponding to the snap-fit ​​structures 111. The snap-fit ​​structures 111 and the snap-fit ​​structures 121 cooperate to achieve the snap-fit ​​and holding of the first air duct assembly 110 and the second air duct assembly 120, forming the air duct body 100.

[0043] Furthermore, such as Figure 3 and Figure 4As shown, the second air duct assembly 120 is provided with a mounting through hole 122 corresponding to the air inlet 101, and the motor 200 is fixedly mounted on the second air duct assembly 120 through the mounting through hole 122.

[0044] In this application, a noise-reducing baffle 130 is provided at the air inlet 101 of the air duct body 100 corresponding to the centrifugal fan blades 300, thereby effectively reducing the noise during the operation of the centrifugal fan and providing users with a better user experience. Optionally, the noise-reducing baffle 130 is integrally formed and fixed to the first air duct assembly 110, or the noise-reducing baffle 130 is fixed to the first air duct assembly 110 by adhesive.

[0045] Specifically, in one implementation, such as Figure 1 , Figure 2 and Figure 5 As shown, the silent air duct of the portable air conditioner described in this application is formed by the fastening and holding of a first air duct assembly 110 and a second air duct assembly 120 to form a spiral-shaped air duct body 100, and a spiral air duct is formed within the air duct body 100. An air inlet 101 is provided axially in the first air duct assembly 110, and an air outlet 102 is formed at the top of the air duct body 100. Further, the second air duct assembly 120 is provided with a mounting through hole 122 corresponding to the air inlet 101. The motor 200 is fixed to the second air duct assembly 120 through the mounting through hole 122 and is positioned corresponding to the air inlet 101. A centrifugal fan blade 300 is sleeved on the rotating shaft 210 of the motor 200 and extends towards the air inlet 101. To ensure the normal rotation of the centrifugal fan blade 300, a gap is left between the centrifugal fan blade 300 and the first air duct assembly 110.

[0046] At this time, when the motor 200 starts working, the centrifugal fan 300 rotates synchronously with the shaft 210, drawing air from outside the duct body 100 into the duct body 100 through the air inlet 101, and then discharging it from the air outlet 102 after passing through the volute duct. In this case, most of the air enters the duct body 100 axially via the centrifugal fan 300 and is discharged through the volute duct, but a small portion of the air may enter the duct body 100 through the gap between the centrifugal fan 300 and the first duct assembly 110. The airflow formed by this portion of air causes the centrifugal fan 300 and the first duct assembly 110 to vibrate, thereby generating noise. Therefore, in this application, a sound-dampening baffle 130 is provided around the air inlet 101, such as... Figure 5 and Figure 6As shown, the silent baffle 130 is arranged around the centrifugal fan blade 300, so that air that is not drawn into the centrifugal fan blade 300 must pass through the channel between the silent baffle 130 and the centrifugal fan blade 300 to enter the air duct body 100. This reduces the vibration of the centrifugal fan blade 300 and the first air duct assembly 110, thereby effectively reducing the noise of the centrifugal fan blade 300 during operation and providing users with a better user experience.

[0047] Furthermore, such as Figure 6 As shown, a protrusion 330 extends from the centrifugal fan blade 300 toward the first air duct assembly 110 to increase the corresponding area between the protrusion 330 and the noise-reducing baffle 130, thus lengthening the path that air not drawn into the centrifugal fan blade 300 needs to take, and further reducing the vibration of the centrifugal fan blade 300 and the first air duct assembly 110. Furthermore, a rim 340 is fixed around the protrusion 330, with a gap between the rim 340 and the protrusion 330, creating different flow channels for air passing between the noise-reducing baffle 130 and the protrusion 330, further reducing the impact of airflow on the centrifugal fan blade 300 and the first air duct assembly 110. Furthermore, the thickness of the silent baffle 130 is less than the distance between the silent baffle 130 and the edging 340, so as to avoid the silent baffle 130 from resonating when air flows through the space between the silent baffle 130 and the edging 340, thereby further ensuring the silent effect of the air duct body 100 during use.

[0048] Furthermore, such as Figure 2 and Figure 6As shown, an annular groove 140 is provided between the silent baffle 130 and the air inlet 101, and a protrusion 150 is provided between the annular groove 140 and the air inlet 101. The protrusion 150, the annular groove 140, the protrusion 330, and the silent baffle 130 together constitute the flow channel for air not drawn into the centrifugal fan 300 to enter the duct body 100. Specifically, when the centrifugal fan 300 starts to rotate with the rotating shaft 210, air is mainly drawn into the centrifugal fan 300 along the axial direction through the air inlet 101 and enters the duct body 100. If air not drawn into the centrifugal fan 300 wants to enter the duct body 100 through the gap between the centrifugal fan 300 and the first duct assembly 110, it must first bypass the protrusion 150, then rotate back into the annular groove 140, travel along the annular groove 140, and then enter the silent baffle. The channel between plate 130 and the protrusion 330, after passing through the channel between the silent baffle 130 and the edging 340 and the gap between the edging 340 and the protrusion 330, enters the air duct body 100. The entire flow channel rotates multiple times, thereby reducing the impact of airflow on the centrifugal fan 300 and the first air duct assembly 110, avoiding abnormal noise from the centrifugal fan 300 during operation, thus reducing the noise of the air duct body 100 and providing users with a better user experience.

[0049] This application also provides a portable air conditioner, including the silent air duct of the portable air conditioner described above, thereby reducing the noise of the centrifugal fan during operation and providing users with a better user experience.

[0050] In summary, this application discloses a silent air duct for a portable air conditioner and the portable air conditioner itself. The silent air duct of the portable air conditioner includes: an air duct body with an air inlet on one side for air to enter; a motor fixed to the other side of the air duct body opposite the air inlet and coaxially arranged with the air inlet; and a centrifugal fan blade sleeved on the motor and extending towards the air inlet. The motor drives the centrifugal fan blade to rotate, drawing air into the air duct body through the air inlet and discharging it. A silent baffle extends vertically around the air inlet towards the centrifugal fan blade, reducing noise when air enters the air duct body. This application effectively reduces the noise of the centrifugal fan during use by providing a silent baffle surrounding the centrifugal fan blade at the air inlet of the air duct body, providing a better user experience.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0052] It should be noted that this application uses a silent air duct for a portable air conditioner and a portable air conditioner as an example to introduce the specific structure and working principle of this application, but the application of this application is not limited to portable air conditioners, and can also be applied to the production and use of other similar products.

[0053] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0054] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A silent air duct for a portable air conditioner, characterized in that, include: The air duct body has an air inlet on one side to allow air to enter the air duct body; A motor is fixed on the other side of the air duct body opposite to the air inlet and is coaxially arranged with the air inlet; Centrifugal fan blade, which is sleeved on the motor and extends toward the air inlet. The motor drives the centrifugal fan blade to rotate so as to draw air into the air duct body through the air inlet and discharge it. A sound-absorbing baffle extends vertically around the air inlet toward the centrifugal fan blades to reduce noise when air enters the duct body.

2. The silent air duct of the portable air conditioner according to claim 1, characterized in that, A ring groove is provided between the silent baffle and the air inlet. The ring groove is provided at the end of the centrifugal fan blade that extends toward the air inlet, so that the air drawn into the air duct body can flow through it.

3. The silent air duct of the portable air conditioner according to claim 2, characterized in that, A raised ring is formed between the annular groove and the air inlet. The raised ring cooperates with the silent baffle to accommodate one end of the centrifugal fan blade extending toward the air inlet within the annular groove.

4. The silent air duct of the portable air conditioner according to claim 3, characterized in that, The centrifugal fan blades include: A connecting part is sleeved on the rotating shaft of the motor to drive the centrifugal fan blades to rotate with the rotating shaft; The blade portion is arranged axially around and parallel to the axis of rotation; The protrusion is located at the end of the blade portion away from the connecting portion and extends toward the air inlet. The protrusion, the protrusion and the silent baffle cooperate to form a flow channel for air that is not drawn into the blade portion to enter the air duct body.

5. The silent air duct of the portable air conditioner according to claim 4, characterized in that, The centrifugal fan blade is surrounded by a rim, and a gap is provided between the rim and the protrusion to allow air to pass through.

6. The silent air duct of the portable air conditioner according to claim 5, characterized in that, The thickness of the sound-silencing baffle is less than the distance between the sound-silencing baffle and the edging.

7. The silent air duct of the portable air conditioner according to claim 1, characterized in that, The air duct body includes: A first air duct assembly, wherein the air inlet is disposed on the first air duct assembly; The second air duct assembly is fastened to the first air duct assembly to form a spiral air duct of the air duct body, and an air outlet is formed at the top of the air duct body.

8. The silent air duct of the portable air conditioner according to claim 7, characterized in that, A plurality of snap-fit ​​structures are provided around the first air duct component, and a plurality of snap-fit ​​holes are provided on the second air duct component corresponding to the snap-fit ​​structures. The snap-fit ​​structures and the snap-fit ​​holes cooperate to achieve the snap-fit ​​and holding of the first air duct component and the second air duct component, forming the air duct body.

9. The silent air duct of the portable air conditioner according to claim 7, characterized in that, The second air duct assembly has a mounting through hole corresponding to the air inlet, and the motor is fixedly mounted on the second air duct assembly through the mounting through hole.

10. A portable air conditioner, characterized in that, Including the silent air duct of the portable air conditioner as described in any one of claims 1-9.

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