Mobile air conditioner and fan thereof

Abstract

The invention provides a mobile air conditioner and a fan thereof, the fan is arranged on the mobile air conditioner, the fan comprises a wind wheel, a volute tongue and a volute, and the volute surrounds the fan and forms at least part of an air duct of the mobile air conditioner; the volute comprises an airflow combing part, the airflow combing part is arranged on the inner wall of the volute, the airflow combing part is arranged away from the volute tongue, and the airflow combing part comprises a plurality of concave parts which are continuously arranged. The air flow combing part is arranged in the volute and plays a role in guiding air in the volute, the flowability of air in the volute is improved, air flow is prevented from being disordered, air field distribution is more uniform, and therefore noise generated when the movable air conditioner operates is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile air conditioners, and in particular to a mobile air conditioner and a fan thereof. Background Art

[0002] In the hot summer, the high temperature has caused troubles to people's lives, and mobile air conditioners are becoming more and more popular among users. However, during use, there is such a problem: when the mobile air conditioner is delivering air, the gas generates vortexes inside the volute, thereby generating noise, which affects the user experience. Summary of the invention

[0003] Therefore, the present invention provides a mobile air conditioner and a fan thereof, wherein an air flow combing device is provided in the volute to prevent gas from generating vortexes inside the volute, thereby reducing the noise of the mobile air conditioner during use and improving the user experience.

[0004] The present invention provides a mobile air conditioner and a fan thereof. A fan is provided in the mobile air conditioner, the fan comprises: a wind wheel, a volute tongue, and a volute, the volute surrounds the fan and forms at least part of the air duct of the mobile air conditioner; the volute comprises: an airflow combing part, the airflow combing part is provided on the inner wall of the volute, and the airflow combing part is provided away from the volute tongue, and the airflow combing part comprises a plurality of continuously provided concave parts.

[0005] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the airflow combing part is a plurality of continuously arranged recessed parts, which are continuously arranged, thereby enhancing the guiding effect of the recessed parts on the wind inside the volute and improving the fluidity of the gas inside the volute. The airflow combing part is arranged inside the volute to prevent the gas from generating vortices when flowing to the air outlet, thereby reducing the noise generated by the mobile air conditioner during operation.

[0006] Furthermore, the recessed portion is provided with a tail portion and a head portion, the tail portion comprising: a tail end, the tail end being arranged away from the head portion; wherein a line connecting the tail end and the center of the wind wheel and a line connecting the head portion and the center of the wheel have a first angle, and the first angle is 15° to 20°.

[0007] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the line connecting the tail end and the center of the wind wheel and the line connecting the head end and the center of the wheel form a first angle, and the first angle is 15° to 20°, which limits the relative position of the head end and the tail end, so that the recessed portion guides the gas in the volute, prevents the gas in the volute from generating vortices, and makes the gas distribution more even, which not only improves the air supply effect of the mobile air conditioner, but also reduces the noise generated by the mobile air conditioner during air supply, thereby improving the user experience.

[0008] Furthermore, the tail also includes: an arc end, the arc end is connected to the tail end, and a line between the head and the center of the circle and a tangent of the arc end have an angle of 20° to 25°, and the tangent passes through the center of the circle.

[0009] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the angle between the line between the head and the center of the circle and the tangent of the arc end is 20° to 25°, which limits the relative position of the arc end and the head, so that the recessed portion can comb the gas in the volute to avoid airflow turbulence, thereby reducing the noise generated by the mobile air conditioner during operation.

[0010] Furthermore, the head and the tail have a relative distance d in the direction of the line between the head and the center of the circle, and the relative distance d is 30 mm to 35 mm.

[0011] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the relative distance d limits the depth of the recessed portion, enhances the guiding effect of the recessed portion on the gas, prevents air flow turbulence in the volute, thereby reducing the noise of the mobile air conditioner during air supply and improving the user experience.

[0012] Furthermore, the volute also includes: a first side wall, the first side wall includes: a first end and a second end, the first end is connected to the recessed portion, the second end is inclined in a direction away from the wind wheel, and the inclination angle along the vertical direction is 5° to 15°.

[0013] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the first end is connected to the recessed portion, and the second end is inclined in the direction away from the wind wheel, thereby increasing the air outlet of the volute, reducing the loss of gas inside the volute, and improving the air outlet effect of the mobile air conditioner.

[0014] Furthermore, the volute also includes: a second side wall, the second side wall is a straight wall, the second side wall is arranged between the volute tongue and the recessed portion, and the second side wall is arranged away from the first side wall.

[0015] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the second side wall is a straight arm, which prevents the gas from generating vortexes inside the volute, thereby increasing the wind speed and ensuring the air outlet effect of the mobile air conditioner. At the same time, it reduces the noise of the mobile air conditioner when supplying air and improves the user experience.

[0016] Furthermore, there is a distance h between the second side wall and the tangent line of the wind wheel, and the distance h is 10 mm to 20 mm.

[0017] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the distance h is 10 mm to 20 mm, which reduces the distance of the narrowest air outlet of the volute, increases the wind speed, reduces the gas vortex inside the volute, and thus reduces the noise of the mobile air conditioner.

[0018] Furthermore, a ratio b of the diameter of the wind wheel to the diameter of the volute is 0.68 to 0.75.

[0019] Compared with the prior art, the technical effect achieved by adopting this technical solution is: when the ratio of the diameter of the wind wheel to the diameter of the volute is between 0.68 and 0.75, the pressure resistance of the wind wheel is significantly improved, which makes the service life of the fan longer, thereby improving the user experience.

[0020] Furthermore, there is a gap n between the volute tongue and the wind wheel, and the gap n is 8 mm to 10 mm.

[0021] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the gap between the volute tongue and the wind wheel is improved, the air volume of the fan is increased, thereby improving the air outlet effect of the mobile air conditioner, bringing a comfortable environment to users and enhancing the user experience.

[0022] Furthermore, the present invention also provides a mobile air conditioner, which includes: a housing; a heat exchanger; and a fan, wherein the fan and the heat exchanger cooperate with each other to promote the operation of the heat exchanger.

[0023] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the mobile air conditioner of the present invention includes the fan of any technical solution of the present invention, therefore, it has all the beneficial effects of the fan of any technical solution of the present invention, which will not be repeated here.

[0024] After adopting the technical solution of the present invention, the following technical effects can be achieved:

[0025] (1) An airflow combing part is provided inside the volute to guide the wind inside the volute, improve the fluidity of the gas inside the volute, prevent the airflow from being turbulent, and make the air field more evenly distributed, thereby reducing the noise generated by the mobile air conditioner during operation;

[0026] (2) The first end is connected to the concave portion, and the second end is inclined in a direction away from the wind wheel, thereby increasing the air outlet of the volute, improving the air outlet efficiency of the fan, reducing the loss of gas inside the volute, and improving the air outlet effect of the mobile air conditioner;

[0027] (3) The second side wall is a straight arm, which prevents the gas from generating vortexes inside the volute, thereby increasing the wind speed and ensuring the air outlet effect of the mobile air conditioner. At the same time, it reduces the noise of the mobile air conditioner when supplying air and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a fan provided by an embodiment of the present invention.

[0029] Figure 2 for Figure 1 Magnified view of area A in the middle.

[0030] Figure 3 This is a schematic diagram of the structure of the fan from the first perspective.

[0031] Figure 4 This is a structural schematic diagram of the fan from a second perspective.

[0032] Description of reference numerals:

[0033] 100: fan; 110: wind wheel; 200: volute; 210: volute tongue; 220: recessed portion; 221: tail portion; 221a: tail end; 221b: arc end; 222: head portion; 230: first side wall; 231: first end portion; 232: second end portion; 240: second side wall; 250: first outer wall. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present embodiment provides a fan, which includes: a wind wheel 110, a volute 200, the volute 200 surrounds the wind wheel 110 and forms at least a part of the air duct of the mobile air conditioner, and a volute tongue 210. The volute 200 includes: an airflow combing part, the airflow combing part is arranged on the inner wall of the volute 200, and the airflow combing part is arranged away from the volute tongue 210, and the airflow combing part includes a plurality of continuously arranged recessed parts 220.

[0036] Specifically, as attached Figure 1 As shown, the volute 200 surrounds the wind wheel 110 to form at least a portion of the air duct, and the airflow combing portion is a plurality of continuously arranged recessed portions 220, and the plurality of recessed portions 220 are arranged away from the volute tongue 210, which guides the gas in the volute 200 and prevents the gas from generating vortexes, thereby reducing the noise of the mobile air conditioner when supplying air and improving the user experience.

[0037] Specifically, the recessed portion 220 is disposed on the right side of the volute 200, and the recessed portion 220 is divided into multiple sections. Specifically, the recessed portion 220 is provided with 4 to 6 sections, which diverts and guides the gas in the volute 200 to avoid vortex flow. Figure 1 As shown in the figure, the wind direction of the fan is counterclockwise.

[0038] Specifically, the recessed portion 220 is provided with a tail portion 221 and a head portion 222, and the tail portion 221 includes: a tail end 221a, and the tail end 221a is arranged away from the head portion 222; wherein, a line between the tail end 221a and the center of the wind wheel 110 and a line between the head portion 222 and the center of the circle have a first angle, and the first angle is 15° to 20°.

[0039] Specifically, as attached Figure 1 As shown, the line connecting the tail end 221a and the center of the wind wheel 110 and the line connecting the head 222 and the center of the circle form a first angle α1, and the first angle α1 is 15° to 20°, which limits the relative position of the head 222 and the tail end 221a, so that the recessed portion 220 guides the gas in the volute 200, prevents the gas in the volute 200 from generating vortexes, and makes the gas distribution more uniform, which not only improves the air supply effect of the mobile air conditioner, but also reduces the noise generated by the mobile air conditioner during air supply, thereby improving the user experience.

[0040] Specifically, the tail 221 also includes: an arc end 221b, the arc end 221b is connected to the tail end 221a, and a line between the head 222 and the center of the circle and a tangent of the arc end 221b have a second angle of 20° to 25°, and the tangent passes through the center of the circle.

[0041] Specifically, as attached Figure 1 As shown, the angle between the line between the head 222 and the center of the circle and the tangent of the arc end 221b is a second angle α2, and the second angle α2 is 20° to 25°, which limits the relative position of the arc end 221b and the head 222, so that the recessed portion 220 can guide the gas in the volute 200, avoid air flow turbulence, generate vortices, and thus reduce the noise generated by the mobile air conditioner when supplying air.

[0042] Specifically, the head 222 and the tail end 221a have a relative distance d in the direction of the line between the head 222 and the center of the circle, and the relative distance d is 30 mm to 35 mm.

[0043] Specifically, as attached Figure 2 As shown, the relative distance d limits the depth of the recessed portion 220, enhances the guiding effect of the recessed portion 220 on the gas, prevents the air flow turbulence in the volute 200, thereby reducing the noise generated by the mobile air conditioner when supplying air and improving the user's actual experience.

[0044] Specifically, the volute 200 also includes: a first side wall 230, the first side wall 230 includes: a first end 231 and a second end 232, the first end 231 is connected to the recessed portion 220, the second end 232 is inclined in a direction away from the wind wheel 110, and the inclination angle along the vertical direction is 5° to 15°.

[0045] Specifically, as attached Figure 1 As shown, the first end 231 is connected to the recessed portion 220, and the second end 232 is inclined in a direction away from the wind wheel 110, thereby increasing the air outlet of the volute 220, improving the air outlet efficiency of the mobile air conditioner, reducing the loss of gas inside the volute 200, and improving the actual user experience.

[0046] Specifically, the volute 200 further includes: a second side wall 240 , which is a straight wall. The second side wall 240 is disposed between the volute tongue 210 and the recessed portion 220 , and the second side wall 240 is disposed away from the first side wall 230 .

[0047] Specifically, as attached Figure 1 As shown, the second side wall 240 is a straight arm, and the extension direction of the second side wall 240 is consistent with the gravity direction of the fan. The setting position of the second side wall 240 is determined by the specific usage conditions. The second side wall 240 effectively avoids the gas from generating vortexes inside the volute 200, thereby ensuring the air outlet effect of the mobile air conditioner, reducing the noise generated by the mobile air conditioner during operation, and improving the user experience.

[0048] Specifically, there is a distance h between the second side wall 240 and a tangent line of the wind wheel 110 , and the distance h is 10 mm to 20 mm.

[0049] As attached Figure 1 As shown, the distance h is 10 mm to 20 mm, which reduces the distance of the narrowest air outlet of the volute 200, increases the wind speed, reduces the gas vortex inside the volute 200, and thus reduces the noise of the mobile air conditioner.

[0050] For example, the ratio b of the diameter of the wind wheel 110 to the diameter of the volute 200 is 0.68 to 0.75.

[0051] Specifically, when the ratio b of the diameter of the wind wheel 110 to the diameter of the volute 200 is between 0.68 and 0.75, the pressure resistance of the wind wheel 110 is significantly improved, the service life of the fan is extended, thereby improving the user experience.

[0052] Preferably, the ratio b of the diameter of the wind wheel 110 to the diameter of the volute 200 is 0.75, and the pressure resistance of the wind wheel 110 is optimal. The diameter of the volute 200 is 308 mm, the diameter of the wind wheel is 231 mm, and the blades of the wind wheel 110 are Y-shaped blades with 43 blades, which improves the use effect of the wind wheel 110.

[0053] For example, there is a gap n between the volute tongue 210 and the wind wheel 110, and the gap n is 8 mm to 10 mm.

[0054] Preferably, the gap between the volute tongue 210 and the wind wheel 110 is improved to increase the air volume of the fan and ensure the comfort of the user. Specifically, the radius of the volute tongue 210 is 28 mm, and the gap between the volute tongue 210 and the wind wheel 110 is 9 mm, which greatly improves the air outlet effect of the mobile air conditioner.

[0055] As attached Figure 3 As shown, the air outlet of the volute 200 is expanded, and the expansion is inclined to form a third angle (α3). The third angle (α3) is 20° to 30°, which increases the air outlet of the volute 200 and the air output of the fan, making the user more comfortable when using it.

[0056] As attached Figure 4 As shown, the first outer wall 250 of the volute 200 is a straight wall, and the extension direction of the first outer wall 250 is consistent with the gravity direction of the fan, which reduces the loss of gas inside the volute 200 and ensures the air outlet effect of the mobile air conditioner.

[0057] Table 1

[0058]

[0059] Among them, the fan before the modification was without an airflow combing structure, and the fan after the modification was equipped with an airflow combing structure.

[0060] As shown in Table 1 above, before the modification, when the fan reaches a speed of 1100r / min, the air volume is 380m 3 The wind wheel shaft power is 19.85W, the static pressure at the outlet of the volute 200 is 12.1Pa, the total pressure at the outlet of the volute 200 is 66.6Pa, and the average outlet velocity is 6.83m / s; when the modified fan reaches 1100r / min, the air volume is 399m 3 The wind wheel shaft power is 20.44W, the static pressure at the outlet of the volute 200 is 6.1Pa, the total pressure at the outlet of the volute 200 is 65.6Pa, and the average outlet flow rate is 6.78m / s.

[0061] Specifically, experiments have shown that when the fan reaches the same rotation speed, the air volume of the fan equipped with an airflow combing structure is higher than that of the fan without an airflow combing structure. The airflow combing structure reduces the loss of gas inside the volute 200, significantly increases the air volume of the fan, improves the actual experience of the user, and at the same time reduces the static pressure and total pressure at the air outlet of the volute 200, reduces the noise of the mobile air conditioner during operation to a certain extent, and is more comfortable to use.

[0062] Table 2

[0063]

[0064] As shown in Table 2 above, when the fan with an airflow combing structure and the fan without an airflow combing structure reach the same air volume, the noise of the fan without an airflow combing structure is 49.4db, and the noise of the fan with an airflow combing structure is 48.1db.

[0065] Specifically, experiments have shown that when the same air volume is achieved, the noise value is reduced by 1.3db. The airflow combing structure effectively alleviates the vortex generated by the gas in the volute 200, reduces the noise generated by the mobile air conditioner during operation, and makes users more comfortable when using it.

[0066] The embodiment of the present invention further provides a mobile air conditioner, which includes: a housing; a heat exchanger; and a fan, wherein the fan and the heat exchanger cooperate with each other to promote the operation of the heat exchanger.

[0067] The mobile air conditioner of the present invention includes the fan of any technical solution of the present invention, therefore, it has all the beneficial effects of the fan of any technical solution of the present invention, which will not be described in detail here.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan, characterized in that: The fan is provided in a mobile air conditioner, and the fan comprises: Wind wheel (110); A volute (200), the volute (200) surrounds the wind wheel (110) and forms at least a part of the air duct of the mobile air conditioner; Cochlear tongue (210); The volute (200) comprises an airflow combing portion, which is arranged on the inner wall of the volute (200) and is arranged away from the volute tongue (210), and comprises a plurality of continuously arranged recessed portions (220).

2. The fan according to claim 1, characterized in that: The recessed portion (220) is provided with a tail portion (221) and a head portion (222), wherein the tail portion (221) comprises: a tail end (221a), wherein the tail end (221a) is arranged away from the head portion (222); A line connecting the tail end (221a) and the center of the wind wheel (110) and a line connecting the head (222) and the center of the wheel have a first angle (α1), and the first angle (α1) is 15° to 20°.

3. The fan according to claim 2, characterized in that: The tail portion (221) further comprises: an arc end (221b), the arc end (221b) being connected to the tail end (221a), and a line connecting the head portion (222) and the center of the circle and a tangent line of the arc end (221b) having a second angle (α2), the second angle (α2) being 20° to 25°, and the tangent line passing through the center of the circle.

4. The fan according to claim 3, characterized in that: The head (222) and the tail end (221a) have a relative distance d in the direction of a line connecting the head (222) and the center of the circle, and the relative distance d is 30 mm to 35 mm.

5. The fan according to claim 1, characterized in that: The volute (200) further comprises: A first side wall (230), wherein the first side wall (230) comprises: a first end portion (231) and a second end portion (232), wherein the first end portion (231) is connected to the recessed portion (220), and the second end portion (232) is inclined in a direction away from the wind wheel (110), and an inclination angle in the vertical direction is 5° to 15°.

6. The fan according to claim 5, characterized in that: The volute (200) further comprises: The second side wall (240) is a straight wall. The second side wall (240) is disposed between the volute tongue (210) and the recessed portion (220), and the second side wall (240) is disposed away from the first side wall (230).

7. The fan according to claim 6, characterized in that: There is a distance h between the second side wall (240) and a tangent line of the wind wheel (110), and the distance h is 10 mm to 20 mm.

8. The fan according to claim 1, characterized in that: A ratio b of the diameter of the wind wheel (110) to the diameter of the volute (200) is in a range of 0.68 to 0.

75.

9. The fan according to claim 8, characterized in that: There is a gap n between the volute tongue (240) and the wind wheel (110), and the gap n is 8 mm to 10 mm.

10. A mobile air conditioner, characterized in that: The mobile air conditioner comprises: case; Heat exchanger; The fan according to any one of claims 1 to 9, wherein the fan cooperates with the heat exchanger to promote the operation of the heat exchanger.

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