An air conditioner

Abstract

The present invention provides an air conditioner, comprising: an air conditioner housing; an air inlet, arranged on one side of the air conditioner housing, the air inlet area is S1; an air outlet, arranged on the other side of the air conditioner housing, the air outlet area is S2; wherein, the air conditioner anti-surge capacity optimal coefficient K, wherein K=S1 / S2; the value range of the air conditioner anti-surge capacity optimal coefficient K is 2.45-2.55. The problem of air conditioner surging caused by unequal areas of air inlet and air outlet is solved.

Description

Technical Field

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

[0002] With the progress of society and the continuous improvement of the quality of life, people's requirements for the comfort of air conditioning are also increasing. Noise is precisely one of the key factors affecting the comfort of air conditioning.

[0003] Wall-mounted air conditioners usually use cross-flow fans for air supply. The advantages of cross-flow fans such as smooth air output and low noise are very suitable for bedroom scenes. However, the weaknesses of cross-flow fans such as low pressure head and poor wind resistance are also very prominent. In some special cases, surge phenomenon is very likely to occur. Intermittent air flow pulsation and fluctuating noise performance worsen people's experience of air conditioning comfort. Therefore, the surge noise of wall-mounted air conditioners needs to be solved urgently. In the prior art, a detachable baffle is set at the end of the cross-flow fan to avoid backflow, and the width of the baffle is set to 6-25mm. Although it can solve the backflow problem and reduce surge to a certain extent, the detachable baffle is easy to loosen after long-term use, causing abnormal noise, and the effect of avoiding surge is relatively poor. Summary of the invention

[0004] The invention solves the problem of surging and poor durability of the air conditioner caused by unequal areas of the air inlet and the air outlet.

[0005] To solve the above problems, an embodiment of the present invention provides an air conditioner, comprising: an air conditioner shell; an air inlet, arranged on one side of the air conditioner shell, and the air inlet area is S1; an air outlet, arranged on the other side of the air conditioner shell, and the air outlet area is S2, wherein the air conditioner has an optimal anti-surge capability coefficient K, wherein K=S1 / S2; the value range of the optimal anti-surge capability coefficient K of the air conditioner is 2.45~2.55.

[0006] Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: since the areas of the air inlet and the air outlet of the air conditioner are inconsistent, the air inlet and the air outlet of the air conditioner are inconsistent, resulting in air outlet surge of the air conditioner. When the ratio of the air inlet and the air outlet of the air conditioner is set to K, the anti-surge ability of the air conditioner is optimized; experiments have proved that when the ratio of the air inlet area to the air outlet area is in the range of 2.45~2.55, the anti-surge ability of the air conditioner is optimized, thereby improving the durability of the air conditioner.

[0007] In one embodiment of the present invention, the air conditioner housing includes: an air conditioner base, and the air duct side receiving groove is provided on the air conditioner base.

[0008] In one embodiment of the present invention, it further comprises: a cross-flow fan wheel, which is arranged in the air conditioner housing, and one end of the cross-flow fan wheel is arranged in the air duct side receiving groove.

[0009] In one embodiment of the present invention, the air duct side accommodating groove includes: a groove bottom, a reserved space formed between the side wall of the crossflow wind wheel and the groove bottom; a base step, which is arranged on a side close to the crossflow wind wheel and extends in a direction away from the groove bottom.

[0010] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: the crossflow impeller will not contact the bottom of the groove when rotating, thereby preventing friction between the two and causing wear to the crossflow impeller and the bottom of the groove; a base step is arranged on the base of the air conditioner to reduce the air intake on the side of the crossflow impeller, thereby increasing the air intake of the part of the crossflow impeller that does not overlap with the base step, thereby preventing the airflow from flowing back from the side to the air inlet, and improving the anti-surge ability of the air conditioner.

[0011] In one embodiment of the present invention, the base step is annular and is integrally formed with the groove bottom.

[0012] Compared with the existing technology, the technical effects achieved by adopting this technical solution are: the base step is arranged in a ring shape, which can better reduce the air intake on the side of the crossflow impeller; and the base step and the groove bottom are integrally formed to make the base step more stable. When the crossflow impeller is working, the base step will not loosen, and thus no abnormal noise will be generated.

[0013] In one embodiment of the present invention, the overlap amount d between the crossflow impeller and the base step ranges from 7.0 to 7.5 mm.

[0014] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the longer the matching length between the crossflow wind wheel and the base step is, the stronger the anti-surge ability is; however, when the matching length between the crossflow wind wheel and the base step is too long, a large amount of air volume will be lost; therefore, when the overlap amount between the crossflow wind wheel and the base step is d, the air conditioner can achieve the maximum air output while ensuring the anti-surge ability; experiments have shown that when the overlap amount d between the crossflow wind wheel and the base step is in the range of 7.0~7.5mm, the air conditioner can achieve the maximum air output while ensuring the anti-surge ability.

[0015] In one embodiment of the present invention, a first protrusion is provided on the base step, and the first protrusion is aligned with the side wall of the crossflow impeller.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: during assembly, the first protrusion can be aligned with the side wall of the crossflow impeller, so that the overlap between the crossflow impeller and the base step reaches a set value.

[0017] In one embodiment of the present invention, a second protrusion is further provided on the base step, and the distance between the first protrusion and the second protrusion is d.

[0018] In one embodiment of the present invention, a bearing installation position is further provided on the air duct side receiving groove, and a bearing is installed in the bearing installation position; wherein the rotating shaft of the crossflow impeller is assembled with the bearing.

[0019] In summary, the above embodiments of the present application may have one or more of the following advantages or beneficial effects:

[0020] i) The ratio of the air inlet area to the air outlet area of ​​the air conditioner is set in the range of 2.45 to 2.55, so that the anti-surge capability of the air conditioner is optimized.

[0021] ii) The overlap value d between the crossflow impeller of the air conditioner and the step of its base is set in the range of 7.0-7.5 mm, so that the air conditioner can reach the maximum air output while ensuring the anti-surge capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an air conditioner 100 provided in an embodiment of the present invention;

[0023] Figure 2 Another structural schematic diagram of an air conditioner 100 provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the internal structure of an air conditioner 100 provided in an embodiment of the present invention;

[0025] Figure 4 for Figure 3 Enlarged view of area I in the middle;

[0026] Figure 5 It is a schematic diagram of the connection structure between the air duct side receiving groove 60 and the crossflow wind wheel 40.

[0027] 100 is an air conditioner; 10 is an air conditioner housing; 20 is an air inlet; 30 is an air outlet; 40 is a crossflow impeller; 50 is an air conditioner base; 60 is a duct side receiving groove; 61 is a reserved space; 62 is a base step; 621 is a first protrusion; 622 is a second protrusion; 63 is an annular protrusion; 64 is an annular groove; 65 is an annular fixing plate; 66 is a bearing; and 67 is a groove bottom. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1 , which is a structural schematic diagram of an air conditioner 100 provided in an embodiment of the present invention. The air conditioner 100, for example, includes: an air conditioner housing 10, an air inlet 20, and an air outlet 30. The air inlet 20 is provided on one side of the air conditioner housing 10, and the area of ​​the air inlet 20 is S1; the air outlet 30 is provided on the other side of the air conditioner housing 10, and the area of ​​the air outlet 30 is S2.

[0030] Specifically, the optimal coefficient of the anti-surge capability of the air conditioner 100 is K, where K=S1 / S2; and the value range of K is 2.45~2.55.

[0031] For example, the area S1 of the air inlet 20 and the area S2 of the air outlet 30 are different, which will result in different air inlet and air outlet volumes. However, in order to ensure that the air conditioner 100 can maintain the smallest possible air inlet resistance, as much work as possible can be converted into effective work, thereby improving the use efficiency of the air conditioner 100. Therefore, the area S1 of the air inlet 20 is set larger than the area S2 of the air outlet 30; however, when the area S1 of the air inlet 20 is set much larger than the area S2 of the air outlet 30, the anti-surge capability of the air conditioner 100 will be reduced. Experiments have shown that when the ratio of the area S1 of the air inlet 20 to the area S2 of the air outlet 30 is 2.45~2.55, the anti-surge capability of the air conditioner 100 is higher.

[0032] Preferably, when the ratio of the area S1 of the air inlet 20 to the area S2 of the air outlet 30 is 2.50, the anti-surge capability of the air conditioner 100 is the highest.

[0033] For details, see Figure 2 The air inlet 20 is arranged at the top of the air conditioner 100, and the corresponding air outlet 30 is arranged at the bottom of the air conditioner 100, so that the air from the air inlet 20 can enter more easily from the air inlet 20, and the air from the air outlet 30 can be discharged more easily from the air outlet 30.

[0034] Preferably, a filter is provided on the inner side of the air inlet 20 to prevent dust in the use space of the air conditioner 100 from entering the interior of the air conditioner 100 .

[0035] Furthermore, when the filter is installed on the air inlet 20, the air intake volume at the air inlet 20 will be reduced. Therefore, when the filter is provided on the air inlet 20, the area of ​​the air inlet 20 can be appropriately increased so that the actual air intake area of ​​the air inlet 20 reaches 2.45 to 2.55 times the area of ​​the air outlet 30.

[0036] Specific, combined Figure 3 and Figure 4 The air conditioner 100, for example, further includes: an air conditioner base 50, a motor and a crossflow fan wheel 40; wherein, an air duct side receiving groove 60 is provided on the end of the air conditioner base 50 away from the motor; the crossflow fan wheel 40 is arranged inside the air conditioner casing 10, with one end arranged at the motor and the other end opposite to it being arranged in the air duct side receiving groove 60.

[0037] Furthermore, the duct side receiving groove 60 includes, for example, a groove bottom 67 and a base step 62. A reserved space 61 is formed between the side wall of the crossflow impeller 40 and the groove bottom 67; the base step 62 is arranged on a side close to the crossflow impeller 40 and extends in a direction away from the groove bottom 67.

[0038] For example, the reserved space 61 is the fitting clearance between the crossflow impeller 40 and the air duct side receiving groove 60. Since one end of the crossflow impeller 40 is connected to the motor, and the other end is rotatably connected to the air duct side receiving groove 60; when the crossflow impeller 40 rotates with the motor, the other end thereof will produce a certain relative displacement with the air duct side receiving groove 60. Therefore, the reserved space 61 is provided so that the crossflow impeller 40 will not contact the side wall of the air duct side receiving groove 60 when rotating, thereby preventing friction between the two, thereby causing wear to the crossflow impeller 40 and the air duct side receiving groove 60.

[0039] Specifically, when the overlap amount between the crossflow impeller 40 and the base step 62 is d, the air conditioner 100 reaches the maximum air output while ensuring the anti-surge capability.

[0040] For example, when the crossflow impeller 40 rotates, air is sucked into the upper part of the crossflow impeller 40 to form an airflow. Since the crossflow impeller 40 is relatively long, the air intake on both sides of the crossflow impeller 40 is relatively small, while the air intake in the middle of the crossflow impeller 40 is relatively large, thereby making the internal pressure of the air conditioner 100 relatively large. At the same time, due to the instability of the eccentric vortex and the movement of the eccentric vortex inside, the airflow at both ends of the air conditioner 100 will flow out to the air inlet 20, causing backflow. The backflow process will cause the entire air duct to surge, and the air outlet will be unstable and fluctuate.

[0041] Furthermore, the longer the fitting length between the crossflow wind wheel 40 and the base step 62 is, the shorter the length of the relative air outlet 30 is, thereby reducing its area S2, but the actual total amount of air output remains unchanged, which can make the anti-surge capability stronger; however, when the fitting length between the crossflow wind wheel 40 and the base step 62 is too long, the shorter the length of the relative air outlet 30 is, thereby reducing its area S2, but the actual total amount of air output remains unchanged, which will result in a large loss of air volume.

[0042] Specifically, when the ratio of the area S1 of the air inlet 20 to the area S2 of the air outlet 30 is 2.45-2.55, and the overlap amount of the crossflow impeller 40 and the base step 62 is d, the air conditioner 100 can achieve the highest air output while ensuring the anti-surge capability. Preferably, when the ratio of the area S1 of the air inlet 20 to the area S2 of the air outlet 30 is 2.45-2.55, and the overlap amount d of the crossflow impeller 40 and the base step 62 obtained by experiment is 7.0-7.5 mm, the air conditioner 100 can achieve a higher air output while ensuring the anti-surge capability.

[0043] Preferably, when the overlap amount d between the crossflow impeller 40 and the base step 62 is 7.3 mm, the air conditioner 100 can achieve the maximum air output while ensuring the anti-surge capability.

[0044] Preferably, the base step 62 is annular and is integrally formed with the groove bottom 67. For example, the base step 62 is annular, which can better reduce the amount of air intake on the side of the crossflow impeller 40; and the base step 62 and the groove bottom 67 are integrally formed to make the base step 62 more stable. When the crossflow impeller 40 is working, the base step 62 will not loosen, so that the air conditioner 100 will not produce abnormal noise when working.

[0045] For details, see Figure 5 The base step 62 is fixedly arranged on the air conditioner base 50, and the base step 62 is located between the air conditioner base 50 and the crossflow impeller 40 to reduce the air intake at the side of the crossflow impeller 40, thereby increasing the air intake at the part of the crossflow impeller 40 that does not overlap with the base step 62, thereby preventing the airflow from flowing back from the side to the air inlet 20, thereby improving the anti-surge capability of the air conditioner 100.

[0046] Preferably, a first protrusion 621 and a second protrusion 622 are provided on the base step 62. The first protrusion 621 is aligned with the side wall of the crossflow impeller 40; and the distance between the first protrusion 621 and the second protrusion 622 is d.

[0047] For example, during assembly, the first protrusion 621 may be aligned with the side wall of the crossflow impeller 40 so that the overlap amount between the crossflow impeller 40 and the base step 62 reaches a set value d.

[0048] Specifically, the duct side receiving groove 60 further includes, for example: a crossflow impeller mounting assembly and a bearing 66. The duct side receiving groove 60 is provided with an annular protrusion 63 on one side close to the crossflow impeller mounting assembly, and an annular groove 64 is provided on the opposite crossflow impeller mounting assembly.

[0049] Preferably, the annular protrusion 63 is an inclined surface on one side, and one side is arranged perpendicular to the plane of the air duct side receiving groove 60. For example, when installing the crossflow impeller mounting assembly, the crossflow impeller mounting assembly is inserted from the side close to the inclined surface, and when the annular protrusion 63 is located in the annular groove 64, the crossflow impeller mounting assembly is fixed in the air duct side receiving groove 60.

[0050] Preferably, the crossflow impeller mounting assembly further includes, for example: an annular fixing plate 65. The annular fixing plate 65 is disposed at one end close to the inner side of the air conditioner 100. For example, when the crossflow impeller mounting assembly is fixed in the air duct side receiving groove 60, the plane of the annular groove 64 on the end away from the air conditioner 100 and the plane of the annular protrusion 63 perpendicular to the air duct side receiving groove 60 cooperate to prevent the crossflow impeller mounting assembly from moving toward the inner side of the air conditioner 100; the annular fixing plate 65 cooperates with the air conditioner housing 10 to prevent the crossflow impeller mounting assembly from moving toward the outer side of the air conditioner 100, thereby improving the stability of the crossflow impeller mounting assembly.

[0051] Furthermore, a bearing mounting position is provided on the inner side of the crossflow impeller mounting assembly, wherein a bearing 66 is mounted in the bearing mounting position, and one end of the crossflow impeller 40 is rotatably connected to the bearing 66 .

[0052] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. An air conditioner, characterized in that: include: Air conditioner housing (10); An air inlet (20) is provided on one side of the air conditioner housing (10), and the area of ​​the air inlet (20) is S1; An air outlet (30) is provided on the other side of the air conditioner housing (10), and the area of ​​the air outlet (30) is S2; wherein the air conditioner anti-surge capability optimal coefficient K is, where K=S1 / S2; and the value range of the air conditioner anti-surge capability coefficient K is 2.45-2.55; The air conditioner housing (10) comprises: an air conditioner base (50), wherein the air conditioner base (50) is provided with a receiving space and an air duct side receiving groove (60); A crossflow wind wheel (40) is arranged in the accommodation space, and one end of the crossflow wind wheel (40) is arranged in the air duct side accommodation groove (60); The air duct side receiving groove (60) comprises a groove bottom (67) and a base step (62); A reserved space (61) is formed between the side wall of the crossflow impeller (40) and the groove bottom (67); The base step (62) is arranged on a side close to the crossflow impeller (40), and is extended in a direction away from the groove bottom (67); The overlap amount d between the crossflow impeller (40) and the base step (62) has a value range of 7.0 to 7.5 mm; The air duct side receiving groove (60) further comprises: a crossflow wind wheel mounting assembly and a bearing (66), and one end of the crossflow wind wheel (40) is rotatably connected to the bearing (66).

2. The air conditioner according to claim 1, characterized in that: The base step (62) is annular and is integrally formed with the groove bottom (67).

3. The air conditioner according to claim 1, characterized in that: A first protrusion (621) is provided on the base step (62), and the first protrusion (621) is aligned with a side wall of the crossflow impeller (40).

4. The air conditioner according to claim 3, characterized in that: A second protruding piece (622) is also provided on the base step (62), and the distance between the first protruding piece (621) and the second protruding piece (622) is d.

5. The air conditioner according to claim 1, characterized in that: A bearing installation position is also provided on the air duct side receiving groove (60), and the bearing (66) is installed in the bearing installation position; Wherein, the rotating shaft of the crossflow impeller (40) is assembled with the bearing (66).

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