An air conditioning system

Abstract

The invention discloses an air conditioning system, comprising an indoor unit, the indoor unit comprising a housing (1), a panel (2), a lining plate (3), a mounting seat (4), a heat exchanger (5), a centrifugal impeller (6), a motor (7), and an inlet collector (8), the lower end surface of the housing being connected with the panel, the mounting seat being provided with a mounting groove, the heat exchanger being installed in the mounting groove, the centrifugal impeller and the motor being installed in the housing, the centrifugal impeller comprising an arc-shaped front cover plate (61), the inlet collector being installed at the air inlet of the arc-shaped front cover plate, characterized in that: a side wall (42) is provided at the radial inner end of the mounting seat, the side wall is adjacent to the mounting groove, a plurality of fixed guide vanes (43) are provided on one side of the side wall, a plurality of rotating guide vanes (62) are provided on the outer side of the arc-shaped front cover plate, and the rotating guide vanes and the fixed guide vanes together constitute a backflow promotion structure. The invention has the effect of suppressing turbulence outside the front cover plate and reducing noise.

Description

Technical Field

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

[0002] like Figure 1 As shown, the existing air conditioning system includes a wall-mounted or wall-mounted indoor unit, the indoor unit includes a shell, a panel, a lining, a mounting seat, a heat exchanger, a centrifugal impeller, a motor, and an inlet collector. The lower end face of the shell is connected to the panel, the inner wall of the shell is fitted with the lining, the lower end face of the lining is connected to the panel, the upper end face of the panel is provided with a mounting seat, the mounting seat is provided with a mounting groove, a heat exchanger is installed in the mounting groove, the other end of the heat exchanger is connected to the lining, a centrifugal impeller and a motor are installed in the shell, the driving shaft of the motor is connected to the centrifugal impeller, the centrifugal impeller includes an arc-shaped front cover plate, an inlet collector is installed at the air inlet of the arc-shaped front cover plate, and the radial outer end of the inlet collector is connected to the mounting seat. Since there is a certain amount of backflow on the back side / outside of the arc-shaped front cover plate, the backflow will cause turbulence. However, the backflow control structure of the existing indoor unit still has great deficiencies in controlling backflow and reducing noise. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an air conditioning system, which can promote the return of the return airflow on the back side / outside of the arc-shaped front cover plate through the combined design of the rotating guide vane and the fixed guide vane, and reduce the noise caused by the turbulence caused by the slow return flow. Therefore, in the indoor unit of the present invention, the rotating guide vane and the fixed guide vane together constitute a return flow promotion structure, which has the effect of suppressing the turbulence on the back side / outside of the arc-shaped front cover plate and reducing noise.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] An air conditioning system comprises an indoor unit, the indoor unit comprising a shell (1), a panel (2), a lining plate (3), a mounting seat (4), a heat exchanger (5), a centrifugal impeller (6), a motor (7), and an inlet collector (8), the lower end surface of the shell being connected to the panel, the inner side wall of the shell being fittedly connected to the lining plate, the lower end surface of the lining plate being connected to the panel, the upper end surface of the panel being provided with a mounting seat, the mounting seat being provided with a mounting groove (41), the heat exchanger being installed in the mounting groove, the other end of the heat exchanger being connected to the lining plate, the shell being provided with a centrifugal impeller and a motor, the driving shaft of the motor being connected to the lining plate, and the inner side wall of the shell being connected to the lining plate. The centrifugal impeller is connected, and the centrifugal impeller includes an arc-shaped front cover plate (61), an inlet collector is installed at the air inlet of the arc-shaped front cover plate, and the radial outer end of the inlet collector is connected to the mounting seat, and is characterized in that: the radial inner end of the mounting seat (4) is provided with a side wall (42), the side wall is adjacent to the mounting groove, and a fixed guide vane (43) is provided on one side of the side wall, and a rotating guide vane (62) is provided on the outer side of the arc-shaped front cover plate, a plurality of fixed guide vanes are distributed along the circumference of the side wall, and a plurality of rotating guide vanes are distributed along the circumference of the arc-shaped front cover plate, and the rotating guide vanes and the fixed guide vanes together constitute a reflux promotion structure.

[0006] Furthermore, the rotating guide vane (62) comprises a side edge (63), a notch (64), and an arc-shaped bottom edge (65); the side edge is parallel to the axis of the centrifugal impeller (6), and the side edge is flush with the arc-shaped front cover plate (61) and the outer periphery of the blade; the lower end of the side edge 6 has a notch; the lower end of the rotating guide vane has an arc-shaped bottom edge; the arc line of the arc-shaped bottom edge is parallel to the arc line of the corresponding part of the inlet collector (8).

[0007] Furthermore, the fixed guide vane (43) is generally of rectangular structure, the lower end of the fixed guide vane has a bottom edge (45), the contour line of the bottom edge smoothly transitions with the arc line of the arc-shaped bottom edge (65), and the radial inner end of the fixed guide vane is arranged in the notch (64).

[0008] Furthermore, an arc-shaped portion (44) is provided at the upper end of the side wall (42), the height of the arc-shaped portion gradually decreases from the radial outer end to the radial inner end, the lowest end of the arc-shaped portion is at the same position as the highest end of the fixed guide plate (43), and the arc-shaped portion plays a role in guiding the return airflow.

[0009] Furthermore, an arc-shaped return flow channel is formed between the arc-shaped bottom edge (65), the bottom edge (45) and the inlet collector (8), and the arc-shaped return flow channel starts from the side wall (42) and ends at the gap between the end of the inlet collector and the end of the arc-shaped front cover plate (61). The arc-shaped return flow channel has a better effect of suppressing turbulence and reducing noise.

[0010] Furthermore, in the same projection plane, the inclination direction of the rotating guide vane (62) is opposite to the inclination direction of the fixed guide vane (43).

[0011] Furthermore, the radial depth of the notch (64) is 0.3-0.5 times the radial width of the fixed guide vane (43); and the axial height of the arc-shaped portion (44) is 1.1-1.3 times the radial gap between the side wall (42) and the side edge (63).

[0012] An air conditioning system of the present invention can promote the return of the return airflow on the back side / outside of the arc-shaped front cover plate through the combined design of the rotating guide vane and the fixed guide vane, thereby reducing the noise caused by the turbulence generated by the slow return flow. Therefore, in the indoor unit of the present invention, the rotating guide vane and the fixed guide vane together constitute a return flow promotion structure, which has the effect of suppressing the turbulence on the back side / outside of the arc-shaped front cover plate and reducing the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the indoor unit in the prior art;

[0014] Figure 2 It is a schematic diagram of the structure of the indoor unit of the present invention;

[0015] Figure 3 This is a partially enlarged structural diagram of the indoor unit of the present invention;

[0016] Figure 4 This is a partially enlarged structural diagram of the indoor unit of the present invention.

[0017] In the figure: shell 1, panel 2, lining plate 3, mounting seat 4, heat exchanger 5, centrifugal impeller 6, motor 7, inlet collector 8, mounting groove 41, side wall 42, fixed guide vane 43, arc-shaped portion 44, bottom edge 45, arc-shaped front cover plate 61, rotating guide vane 62, side edge 63, notch 64, arc-shaped bottom edge 65, "→" airflow direction. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 2-4As shown, an air conditioning system includes an indoor unit, which includes a shell 1, a panel 2, a lining plate 3, a mounting seat 4, a heat exchanger 5, a centrifugal impeller 6, a motor 7, and an inlet collector 8. The lower end surface of the shell 1 is connected with the panel 2, the inner side wall of the shell 1 is fitted with the lining plate 3, the lower end surface of the lining plate 3 is connected to the panel 2, the upper end surface of the panel 2 is provided with a mounting seat 4, the mounting seat 4 is provided with a mounting groove 41, the heat exchanger 5 is installed in the mounting groove 41, the other end of the heat exchanger 5 is connected to the lining plate 3, the shell 1 is installed with a centrifugal impeller 6 and a motor 7, and the driving shaft of the motor 7 is connected to the centrifugal impeller 6 Next, the centrifugal impeller 6 includes an arc-shaped front cover plate 61, an inlet collector 8 is installed at the air inlet of the arc-shaped front cover plate 61, and the radial outer end of the inlet collector 8 is connected to the mounting seat 4, which is characterized in that: a side wall 42 is provided at the radial inner end of the mounting seat 4, the side wall 42 is adjacent to the mounting groove 41, a fixed guide vane 43 is provided on one side of the side wall 42, a rotating guide vane 62 is provided on the outer side of the arc-shaped front cover plate 61, a plurality of fixed guide vanes 43 are distributed along the circumference of the side wall 42, a plurality of rotating guide vanes 62 are distributed along the circumference of the arc-shaped front cover plate 61, and the rotating guide vanes 62 and the fixed guide vanes 43 together constitute a reflux promotion structure.

[0021] An air conditioning system of the present invention can promote the return of the return airflow on the back side / outside of the arc-shaped front cover plate 61 through the combined design of the rotating guide vane 62 and the fixed guide vane 43, and reduce the noise caused by turbulence caused by slow return. Therefore, in the indoor unit of the present invention, the rotating guide vane 62 and the fixed guide vane 43 together constitute a return promotion structure, which has the effect of suppressing turbulence on the back side / outside of the arc-shaped front cover plate 61 and reducing noise.

[0022] Furthermore, the rotating guide vane 62 includes a side 63, a slot 64, and an arc-shaped bottom edge 65. The side 63 is parallel to the axis of the centrifugal impeller 6, and the side 63 is flush with the arc-shaped front cover plate 61 and the outer periphery of the blade. The lower end of the side 63 has a slot 64, and the lower end of the rotating guide vane 62 has an arc-shaped bottom edge 65. The arc line of the arc-shaped bottom edge 65 is parallel to the arc line of the corresponding part of the inlet collector 8.

[0023] Furthermore, the fixed guide vane 43 is generally of a rectangular structure, and the lower end of the fixed guide vane 43 has a bottom edge 45 , the contour line / arc line of the bottom edge 45 smoothly transitions with the arc line of the arc bottom edge 65 , and the radial inner end of the fixed guide vane 43 is disposed in the slot 64 .

[0024] Furthermore, an arc portion 44 is provided at the upper end of the side wall 42, and the height of the arc portion 44 gradually decreases from the radial outer end to the radial inner end. The lowest end of the arc portion 44 is at the same position as the highest end of the fixed guide plate 43, and the arc portion 44 plays a role in guiding the return airflow.

[0025] Furthermore, an arc-shaped reflux channel is formed between the arc-shaped bottom edge 65, the bottom edge 45 and the inlet collector 8. The arc-shaped reflux channel starts from the side wall 42 and ends at the gap between the end of the inlet collector 8 and the end of the arc-shaped front cover plate 61. The arc-shaped reflux channel has a better effect of suppressing turbulence and reducing noise.

[0026] Furthermore, in the same projection plane, the inclination direction of the rotating guide vane 62 is opposite to the inclination direction of the fixed guide vane 43 , which has the effect of promoting the backflow.

[0027] Further, the radial depth of the notch 64 is 0.3-0.5 times, preferably 0.4 times, the radial width of the fixed guide vane 43. The axial height of the arc portion 44 is 1.1-1.3 times, preferably 1.2 times, the radial gap between the side wall 42 and the side edge 63. By designing these parameters, turbulence can be further suppressed and noise can be reduced.

[0028] An air conditioning system of the present invention can promote the return of the return airflow on the back side / outside of the arc-shaped front cover plate 61 through the combined design of the rotating guide vane 62 and the fixed guide vane 43, and reduce the noise caused by turbulence caused by slow return. Therefore, in the indoor unit of the present invention, the rotating guide vane 62 and the fixed guide vane 43 together constitute a return promotion structure, which has the effect of suppressing turbulence on the back side / outside of the arc-shaped front cover plate 61 and reducing noise.

[0029] The above-mentioned implementation modes are for explanation of the present invention rather than limitation of the present invention. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An air conditioning system, comprising an indoor unit, the indoor unit comprising a shell (1), a panel (2), a lining plate (3), a mounting seat (4), a heat exchanger (5), a centrifugal impeller (6), a motor (7), and an inlet collector (8), wherein the lower end surface of the shell is connected to the panel, the inner side wall of the shell is fittedly connected to the lining plate, the lower end surface of the lining plate is connected to the panel, the upper end surface of the panel is provided with a mounting seat, the mounting seat is provided with a mounting groove (41), the heat exchanger is installed in the mounting groove, the other end of the heat exchanger is connected to the lining plate, the shell is provided with a centrifugal impeller and a motor, the driving shaft of the motor is connected to the centrifugal impeller, the centrifugal impeller comprises an arc-shaped front cover plate (61), the inlet collector is installed at the air inlet of the arc-shaped front cover plate, and the radial outer end of the inlet collector is connected to the mounting seat; Features: A side wall (42) is provided at the radial inner end of the mounting seat (4), the side wall is adjacent to the mounting groove, a fixed guide vane (43) is provided on one side of the side wall, a rotating guide vane (62) is provided on the outer side of the arc-shaped front cover plate, a plurality of fixed guide vanes are distributed along the circumference of the side wall, a plurality of rotating guide vanes are distributed along the circumference of the arc-shaped front cover plate, and the rotating guide vanes and the fixed guide vanes together constitute a reflux promotion structure; The rotating guide vane (62) comprises a side edge (63), a notch (64), and an arc-shaped bottom edge (65); the side edge is parallel to the axis of the centrifugal impeller (6), and is flush with the arc-shaped front cover plate (61) and the outer periphery of the blade; the lower end of the side edge (63) has a notch; the lower end of the rotating guide vane has an arc-shaped bottom edge; the arc line of the arc-shaped bottom edge is parallel to the arc line of the corresponding part of the inlet collector (8); the fixed guide vane (43) is generally rectangular in structure; the lower end of the fixed guide vane has a bottom edge (45); the profile line of the bottom edge smoothly transitions with the arc line of the arc-shaped bottom edge (65); the radial inner end of the fixed guide vane is arranged in the notch (64).

2. An air conditioning system according to claim 1, characterized in that: An arcuate portion (44) is provided at the upper end of the side wall (42), the height of the arcuate portion gradually decreases from the radial outer end to the radial inner end, the lowest end of the arcuate portion is at the same position as the highest end of the fixed guide plate (43), and the arcuate portion plays a role in guiding the return airflow.

3. An air conditioning system according to claim 2, characterized in that: An arc-shaped return flow channel is formed between the arc-shaped bottom edge (65), the bottom edge (45) and the inlet collector (8). The arc-shaped return flow channel starts from the side wall (42) and ends at the gap between the end of the inlet collector and the end of the arc-shaped front cover plate (61). The arc-shaped return flow channel has a better effect of suppressing turbulence and reducing noise.

4. An air conditioning system as claimed in claim 3, characterized in that: The radial depth of the notch (64) is 0.3-0.5 times the radial width of the fixed guide vane (43); the axial height of the arc-shaped portion (44) is 1.1-1.3 times the radial gap between the side wall (42) and the side edge (63).

5. An air conditioning system as claimed in claim 3, characterized in that: In the same projection plane, the inclination direction of the rotating guide vane (62) is opposite to the inclination direction of the fixed guide vane (43).

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