EP3640548B1 - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- EP3640548B1 EP3640548B1 EP18885141.4A EP18885141A EP3640548B1 EP 3640548 B1 EP3640548 B1 EP 3640548B1 EP 18885141 A EP18885141 A EP 18885141A EP 3640548 B1 EP3640548 B1 EP 3640548B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- retaining ring
- flow
- cross
- conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0025—Cross-flow or tangential fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Definitions
- the present disclosure relates to the field of air conditioner, and in particular to an air conditioner.
- the cross-flow air duct is widely used in air conditioners.
- Two ends of the cross-flow air duct system are relatively low-pressure zones.
- return vortexes At the working process of the cross-flow blade, it is easy to form return vortexes at positions of two end surfaces, which causes a phenomenon of non-uniform air blow and causes noise easily.
- the air conditioner when used to heat and supply heat air, external air is engulfed at two end surfaces due to the phenomenon of return vortexes, causing the temperatures at two end surfaces to be significantly lower than the temperatures at other positions of the air flow outlet, and there is a problem of non-uniform air blow at the air flow outlet.
- the Chinese utility model application CN 206 094 308 U discloses an air conditioner.
- Document WO2013080395 discloses an air conditioner according to the preamble of the independent claim 1.
- the main objective of the present disclosure is to provide an air conditioner, to solve the problem of non-uniform air blow of an air duct structure of an air conditioner in the prior art.
- the present disclosure provides an air conditioner comprising an air-conditioner air inlet, an air-conditioner air outlet, and an air duct structure disposed between the air-conditioner air inlet and the air-conditioner air outlet;
- the air duct structure comprises: a cross-flow blade, and a volute-and-tongue assembly, wherein the cross-flow blade is arranged inside the volute-and-tongue assembly;
- the volute-and-tongue assembly comprises an air flow inlet and an air flow outlet; along an extending direction of the cross-flow blade, a height of the air flow inlet is a ; a height of the air flow outlet is b; a height of the air-conditioner air inlet is h ; and a height of the air-conditioner air outlet is k, wherein k ⁇ b ⁇ a ⁇ h.
- the air duct structure further comprises: an upper end cap provided at a first end
- the present disclosure relates to the field of air conditioner, and in particular to an air conditioner.
- the cross-flow air duct is widely used in air conditioners.
- Two ends of the cross-flow air duct system are relatively low-pressure zones.
- return vortexes At the working process of the cross-flow blade, it is easy to form return vortexes at positions of two end surfaces, which causes a phenomenon of non-uniform air blow and causes noise easily.
- the air conditioner when used to heat and supply heat air, external air is engulfed at two end surfaces due to the phenomenon of return vortexes, causing the temperatures at two end surfaces to be significantly lower than the temperatures at other positions of the air flow outlet, and there is a problem of non-uniform air blow at the air flow outlet.
- the Chinese utility model application CN 206 094 308 U discloses an air conditioner according to the preamble of the independent claim 1.
- the main objective of the present invention is to provide an air conditioner, to solve the problem of non-uniform air blow of an air duct structure of an air conditioner in the prior art.
- the present invention provides an air conditioner according to claim 1.
- the air duct structure further comprises: a first end cap provided at a first end of the volute-and-tongue assembly, and a first retaining ring provided on the first end cap, wherein, at least a portion of a first end of the cross-flow blade is disposed inside the first retaining ring.
- the cross-flow blade fits the first retaining ring with a clearance.
- the clearance between the cross-flow blade and the first retaining ring is c, wherein 5 mm ⁇ c ⁇ 10 mm.
- the first retaining ring includes: a first retaining ring section for air intake, and a first retaining ring section for air blow; wherein the first retaining ring section for air intake is provided at a side of the first end cap, and the side of the first end cap is adjacent to the air flow inlet; the first retaining ring section for air blow is disposed at another side of the first end cap, and the other side of the first end cap is adjacent to the air flow outlet; a distance from an outer end surface of the first retaining ring section for air intake to an end surface of the first end of the cross-flow blade is e , and a distance from an outer end surface of the first retaining ring section for air blow to the end surface of the first end of the cross-flow blade is d, wherein e ⁇ d.
- the air duct structure further comprises: a second end cap provided at a second end of the volute-and-tongue assembly, and a second retaining ring provided on the second end cap; wherein at least a portion of a second end of the cross-flow blade is disposed inside the second retaining ring; the first retaining ring and the second retaining ring are arranged opposite to each other; and the air flow inlet and the air flow outlet are disposed between the first retaining ring and the second retaining ring.
- the cross-flow blade fits the second retaining ring with a clearance.
- the clearance between the cross-flow blade and the second retaining ring is s, wherein 5 mm ⁇ s ⁇ 10 mm.
- the second retaining ring comprises: a second retaining ring section for air intake, and a second retaining ring section for air blow; wherein, the second retaining ring section for air intake is provided at a side of the second end cap, and the side of the second end cap is adjacent to the air flow inlet; the second retaining ring section for air blow is disposed at another side of the second end cap, and the other side of the second end cap is adjacent to the air low outlet; a distance from an outer end surface of the second retaining ring section for air intake to an end surface of a second end of the cross-flow blade is f , and a distance from an outer end surface of the second retaining ring section for air blow to the end surface of the second end of the cross-flow blade is g, wherein f ⁇ g .
- the dimension of the air flow inlet is a ; the dimension of the air flow outlet is b ; the dimension of the air-conditioner air inlet is h ; and the dimension of the air-conditioner air outlet is k.
- the air conditioner includes the air-conditioner air inlet, the air-conditioner air outlet, and the air duct structure disposed between the air-conditioner air inlet and the air-conditioner air outlet; the air duct structure includes the volute-and-tongue assembly and the cross-flow blade; the cross-flow blade is arranged inside the volute-and-tongue assembly.
- the volute-and-tongue assembly includes the air flow inlet and the air flow outlet.
- the air conditioner of the present invention can reduce the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure, thereby avoiding the phenomenon of non-uniform air blow, and solving the problem of non-uniform air blow of an air duct structure of the air conditioner in the prior art.
- the present invention provides an air conditioner.
- the air conditioner includes an air-conditioner air inlet 70, an air-conditioner air outlet 80, and an air duct structure arranged between the air-conditioner air inlet 70 and the air-conditioner air outlet 80.
- the air duct structure includes a cross-flow blade 20 and a volute-and-tongue assembly 10.
- the cross-flow blade 20 is arranged inside the volute-and-tongue assembly 10.
- the volute-and-tongue assembly 10 includes an air flow inlet 11 and an air flow outlet 12.
- a dimension of the air flow inlet 11 is a ; a dimension of the air flow outlet 12 is b ; a dimension of the air-conditioner air inlet 70 is h ; and a dimension of the air-conditioner air outlet 80 is k, where k ⁇ b ⁇ a ⁇ h.
- the dimension of the air flow inlet 11 is a ; the dimension of the air flow outlet 12 is b ; the dimension of the air-conditioner air inlet 70 is h ; and the dimension of the air-conditioner air outlet 80 is k.
- the air conditioner includes the air-conditioner air inlet 70, the air-conditioner air outlet 80, and the air duct structure disposed between the air-conditioner air inlet 70 and the air-conditioner air outlet 80; the air duct structure includes the volute-and-tongue assembly 10 and the cross-flow blade 20; the cross-flow blade 20 is arranged inside the volute-and-tongue assembly 10.
- the volute-and-tongue assembly 10 includes the air flow inlet 11 and the air flow outlet 12.
- the air conditioner of the present invention can reduce the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure, thereby avoiding the phenomenon of non-uniform air blow, and solving the problem of non-uniform air blow of an air duct structure of the air conditioner in the prior art.
- the volute-and-tongue assembly 10 has a cross-flow air duct.
- the cross-flow air duct has an air flow inlet 11 and an air flow outlet 12.
- the air duct structure if the air flow resistance at the air flow inlet becomes larger, the flow-through load resistance of the air duct structure becomes larger; and if the air flow resistance at the air flow outlet becomes larger, the flow-through load resistance of the air duct structure becomes smaller. Therefore, that the dimension of the air flow outlet 12 is less than the dimension of the air flow inlet 11 helps to ensure the continuity and smoothness of the air flow of the air intake and the air blow.
- 6mm ⁇ a-b ⁇ 15mm better smoothness of the air flow at the air flow inlet and at the air flow outlet can be ensured, and a larger sheltered dimension of the cross-flow blade 20 can be avoided, thereby ensuring an effective working dimension of the cross-flow blade 20.
- the air duct structure further includes an first end cap 30 provided at a first end of the volute-and-tongue assembly 10, and a first retaining ring 50 provided on the first end cap 30. At least a portion of the first end of the cross-flow blade 20 is disposed inside the first retaining ring 50.
- the air duct structure further includes the first end cap 30 and the first retaining ring 50.
- the first end cap 30 is disposed at the first end of the volute-and-tongue assembly 10, and the first retaining ring 50 is provided on the first end cap 30. At least a portion of the first end of the cross-flow blade 20 is disposed inside the first retaining ring 50.
- the cross-flow blade 20 fits the first retaining ring 50 with a clearance.
- the clearance between the cross-flow blade 20 and the first retaining ring 50 is c, wherein 5 mm ⁇ c ⁇ 10 mm.
- the flow volume and the flow rate at two ends of the cross-flow blade 20 are lower; the pressure gradient is larger; and controlling the clearance to be smaller to reduce drastic changes of the pressure gradient and improve the surge phenomenon caused by the pressure change.
- the clearance is too small, the requirements for the dynamic balance of the blade and the accuracy of the air duct structure are high, and actually, it is difficult to meet the requirements, thus causing the problem that the fan collides with the inner wall of the air duct structure to generate friction when the fan is running. Therefore, in this embodiment, when 5 mm ⁇ c ⁇ 10 mm, the drastic changes of the pressure gradient at two ends of the cross-flow blade 20 can be effectively reduced.
- the first retaining ring 50 includes a first retaining ring section 51 for air inlet and a first retaining ring section 52 for air blow.
- the first retaining ring section 51 for air inlet is provided at a side of the first end cap 30, and the side of the first end cap 30 is adjacent to the air flow inlet 11.
- the first retaining ring section 52 for air blow is disposed at another side of the first end cap 30, and the other side of the first end cap 30 is adjacent to the air flow outlet 12.
- the distance from the outer end surface of the first retaining ring section 51 for air inlet to the end surface of the first end of the cross-flow blade 20 is e, and the distance from the outer end surface of the first retaining ring section 52 for air blow to the end surface of the first end of the cross-flow blade 20 is d, where e ⁇ d.
- the first retaining ring 50 includes the first retaining ring section 51 for air inlet and the first retaining ring section 52 for air blow; the first retaining ring section 51 for air inlet is provided at the side of the first end cap 30, and the side of the first end cap 30 is adjacent to the air flow inlet 11, and the first retaining ring section 52 for air blow is provided at the other side of the first end cap 30, and the other side of the first end cap 30 is adjacent to the air flow outlet 12.
- the distance from the outer end surface of the first retaining ring section 51 for air inlet to the end surface of the first end of the cross-flow blade 20 is e
- the distance from the outer end surface of the first retaining ring section 52 for air blow to the end surface of the first end of the cross-flow blade 20 is d, where e ⁇ d.
- the air duct structure further includes a second end cap 40 provided at the second end of the volute-and-tongue assembly 10, and a second retaining ring 60 provided on the second end cap 40. At least a portion of the second end of the cross-flow blade 20 is disposed inside the second retaining ring 60.
- the first retaining ring 50 and the second retaining ring 60 are arranged opposite to each other, and the air flow inlet 11 and the air flow outlet 12 are disposed between the first retaining ring 50 and the second retaining ring 60.
- the cross-flow blade 20 fits the second retaining ring 60 with a clearance.
- the clearance between the cross-flow blade 20 and the second retaining ring 60 is s, wherein 5 mm ⁇ s ⁇ 10 mm.
- the second retaining ring 60 includes a second retaining ring section 61 for air intake, and a second retaining ring section 62 for air blow.
- the second retaining ring section 61 for air intake is provided at a side of the second end cap 40, and the side of the second end cap 40 is adjacent to the air flow inlet 11.
- the second retaining ring section 62 for air blow is disposed at another side of the second end cap 40, and the other side of the second end cap 40 is adjacent to the air flow outlet 12.
- the distance from the outer end surface of the second retaining ring section 61 for air intake to the end surface of the second end of the cross-flow blade 20 is f
- the distance from the outer end surface of the second retaining ring section 62 for air blow to the end surface of the second end of the cross-flow blade 20 is g , where f ⁇ g .
- the air flow inlet 11 is disposed between the first retaining ring section 51 for air inlet and the second retaining ring section 61 for air intake
- the air flow outlet 12 is disposed between the first retaining ring section 52 for air blow and the second retaining ring section 62 for air blow.
- the air conditioner includes the air-conditioner air inlet 70 and the air-conditioner air outlet 80; the air duct structure is disposed between the air-conditioner air inlet 70 and the air-conditioner air outlet 80; along the extending direction of the cross-flow blade 20, the dimension of the air-conditioner air inlet 70 is greater than the dimension of the air flow inlet 11; and/or the dimension of the air flow outlet 12 is greater than the dimension of the air-conditioner air outlet 80.
- the dimension of the air-conditioner air inlet 70 is h
- the dimension of the air-conditioner air outlet 80 is k, wherein 6 mm ⁇ h-a ⁇ 15 mm, and/or, 6 mm ⁇ b-k ⁇ 15mm.
- the overall air duct satisfies a variation trend of the dimension of the air duct gradually decreasing along the flow direction.
- the air-conditioner air inlet 70, the air flow inlet 11, the air flow outlet 12 and the air-conditioner air outlet 80 are designed to be tapered.
- the air conditioner further includes a heat exchanger 90.
- the heat exchanger 90 is disposed between the air-conditioner air inlet 70 and the air flow inlet 11 of the cross-flow air duct.
- the dimension of the air flow inlet 11 is a ; the dimension of the air flow outlet 12 is b ; the dimension of the air-conditioner air inlet 70 is h ; and the dimension of the air-conditioner air outlet 80 is k.
- the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure can be reduced, thereby avoiding the phenomenon of non-uniform air blow.
- the air conditioner includes the air-conditioner air inlet 70, the air-conditioner air outlet 80, and the air duct structure disposed between the air-conditioner air inlet 70 and the air-conditioner air outlet 80; the air duct structure includes the volute-and-tongue assembly 10 and the cross-flow blade 20; the cross-flow blade 20 is arranged inside the volute-and-tongue assembly 10.
- the volute-and-tongue assembly 10 includes the air flow inlet 11 and the air flow outlet 12.
- the air conditioner of the present invention can reduce the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure, thereby avoiding the phenomenon of non-uniform air blow, and solving the problem of non-uniform air blow of the air duct structure of the air conditioner in the prior art.
- Two ends of the cross-flow air duct system are relatively low-pressure zones.
- the air conditioner is applied to heating and air distribution, external air is engulfed at two end surfaces due to the phenomenon of return vortexes, thus causing the temperatures at two end surfaces to be significantly lower than the temperatures at other positions of the air flow outlet, and there is a problem of non-uniform air blow at the air flow outlet.
- the overall air duct satisfies the variation trend of the dimension of the air duct structure gradually decreasing along the flow direction.
- the air-conditioner air inlet 70, the air flow inlet 11, the air flow outlet 12 and the air-conditioner air outlet 80 are designed to be tapered, which solves the problems of the non-uniform air blow and the non-uniform temperature of the air blow at the end surface of the air flow outlet of the cross-flow air duct.
- spatially relative terms such as “above”, “over”, “on a surface of”, “upper”, etc., may be used herein to describe the spatial position relationships between one device or feature and other devices or features as shown in the drawings. It should be appreciated that the spatially relative term is intended to include different directions during using or operating the device other than the directions described in the drawings. For example, if the device in the drawings is inverted, the device is described as the device “above other devices or structures” or “on other devices or structures” will be positioned “below other devices or structures” or “under other devices or structures”. Thus, the exemplary term “above” can include both “above” and "under”. The device can also be positioned in other different ways (rotating 90 degrees or at other orientations), and the corresponding description of the space used herein is interpreted accordingly.
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Description
- The present disclosure relates to the field of air conditioner, and in particular to an air conditioner.
- At present, the cross-flow air duct is widely used in air conditioners. Two ends of the cross-flow air duct system are relatively low-pressure zones. During the working process of the cross-flow blade, it is easy to form return vortexes at positions of two end surfaces, which causes a phenomenon of non-uniform air blow and causes noise easily. In addition, when the air conditioner is used to heat and supply heat air, external air is engulfed at two end surfaces due to the phenomenon of return vortexes, causing the temperatures at two end surfaces to be significantly lower than the temperatures at other positions of the air flow outlet, and there is a problem of non-uniform air blow at the air flow outlet.
- The Chinese utility model application
CN 206 094 308 U discloses an air conditioner. DocumentWO2013080395 discloses an air conditioner according to the preamble of the independent claim 1. - The main objective of the present disclosure is to provide an air conditioner, to solve the problem of non-uniform air blow of an air duct structure of an air conditioner in the prior art.
- In order to achieve the above objective, the present disclosure provides an air conditioner comprising an air-conditioner air inlet, an air-conditioner air outlet, and an air duct structure disposed between the air-conditioner air inlet and the air-conditioner air outlet; the air duct structure comprises: a cross-flow blade, and a volute-and-tongue assembly, wherein the cross-flow blade is arranged inside the volute-and-tongue assembly; the volute-and-tongue assembly comprises an air flow inlet and an air flow outlet; along an extending direction of the cross-flow blade, a height of the air flow inlet is a; a height of the air flow outlet is b; a height of the air-conditioner air inlet is h; and a height of the air-conditioner air outlet is k, wherein k < b < a < h.
- Furthermore, 6 mm ≤ a-b ≤ 15 mm.
- Furthermore, the air duct structure further comprises: an upper end cap provided at a first end
- The present disclosure relates to the field of air conditioner, and in particular to an air conditioner.
- At present, the cross-flow air duct is widely used in air conditioners. Two ends of the cross-flow air duct system are relatively low-pressure zones. During the working process of the cross-flow blade, it is easy to form return vortexes at positions of two end surfaces, which causes a phenomenon of non-uniform air blow and causes noise easily. In addition, when the air conditioner is used to heat and supply heat air, external air is engulfed at two end surfaces due to the phenomenon of return vortexes, causing the temperatures at two end surfaces to be significantly lower than the temperatures at other positions of the air flow outlet, and there is a problem of non-uniform air blow at the air flow outlet.
- The Chinese utility model application
CN 206 094 308 U discloses an air conditioner according to the preamble of the independent claim 1. - The main objective of the present invention is to provide an air conditioner, to solve the problem of non-uniform air blow of an air duct structure of an air conditioner in the prior art.
- In order to achieve the above objective, the present invention provides an air conditioner according to claim 1.
- Furthermore, 6 mm ≤ a-b ≤ 15 mm.
- Furthermore, the air duct structure further comprises: a first end cap provided at a first end of the volute-and-tongue assembly, and a first retaining ring provided on the first end cap, wherein, at least a portion of a first end of the cross-flow blade is disposed inside the first retaining ring.
- Furthermore, the cross-flow blade fits the first retaining ring with a clearance.
- Furthermore, the clearance between the cross-flow blade and the first retaining ring is c, wherein 5 mm ≤ c ≤ 10 mm.
- Furthermore, the first retaining ring includes: a first retaining ring section for air intake, and a first retaining ring section for air blow; wherein the first retaining ring section for air intake is provided at a side of the first end cap, and the side of the first end cap is adjacent to the air flow inlet; the first retaining ring section for air blow is disposed at another side of the first end cap, and the other side of the first end cap is adjacent to the air flow outlet; a distance from an outer end surface of the first retaining ring section for air intake to an end surface of the first end of the cross-flow blade is e, and a distance from an outer end surface of the first retaining ring section for air blow to the end surface of the first end of the cross-flow blade is d, wherein e < d.
- Furthermore, 3 mm ≤ d-e ≤ 8 mm.
- Furthermore, the air duct structure further comprises: a second end cap provided at a second end of the volute-and-tongue assembly, and a second retaining ring provided on the second end cap; wherein at least a portion of a second end of the cross-flow blade is disposed inside the second retaining ring; the first retaining ring and the second retaining ring are arranged opposite to each other; and the air flow inlet and the air flow outlet are disposed between the first retaining ring and the second retaining ring.
- Furthermore, the cross-flow blade fits the second retaining ring with a clearance.
- Furthermore, the clearance between the cross-flow blade and the second retaining ring is s, wherein 5 mm ≤ s ≤ 10 mm.
- Furthermore, the second retaining ring comprises: a second retaining ring section for air intake, and a second retaining ring section for air blow; wherein, the second retaining ring section for air intake is provided at a side of the second end cap, and the side of the second end cap is adjacent to the air flow inlet; the second retaining ring section for air blow is disposed at another side of the second end cap, and the other side of the second end cap is adjacent to the air low outlet; a distance from an outer end surface of the second retaining ring section for air intake to an end surface of a second end of the cross-flow blade is f, and a distance from an outer end surface of the second retaining ring section for air blow to the end surface of the second end of the cross-flow blade is g, wherein f < g.
- Furthermore, 3 mm ≤ g-f≤ 8 mm.
- Furthermore, 6 mm ≤ h-a ≤ 15 mm, and/or, 6 mm ≤ b-k ≤ 15mm.
- In the air conditioner of the present invention, along the extending direction of the cross-flow blade, the dimension of the air flow inlet is a; the dimension of the air flow outlet is b; the dimension of the air-conditioner air inlet is h; and the dimension of the air-conditioner air outlet is k. By setting k<b<a<h, the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure can be reduced, thereby avoiding the phenomenon of non-uniform air blow. The air conditioner includes the air-conditioner air inlet, the air-conditioner air outlet, and the air duct structure disposed between the air-conditioner air inlet and the air-conditioner air outlet; the air duct structure includes the volute-and-tongue assembly and the cross-flow blade; the cross-flow blade is arranged inside the volute-and-tongue assembly. The volute-and-tongue assembly includes the air flow inlet and the air flow outlet. The air conditioner of the present invention can reduce the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure, thereby avoiding the phenomenon of non-uniform air blow, and solving the problem of non-uniform air blow of an air duct structure of the air conditioner in the prior art.
- The accompanying drawings attached to the specification form a part of the disclosure and are intended to provide a further understanding of the present invention. The illustrative embodiments of the invention and the description thereof are used for explanations of the present invention, and do not constitute improper limitations of the present invention which is defined in the claims. In the accompanying drawings:
-
FIG. 1 is a schematic structural diagram of an air duct structure of an air conditioner according to an embodiment of the present invention; -
FIG. 2 is a schematic diagram illustrating a cross-sectional structure in an A-A direction of the air conditioner inFIG. 1 . -
FIG. 3 is a schematic diagram illustrating a partially enlarged structure at a location B of the air conditioner inFIG. 2 ; -
FIG. 4 is a schematic diagram illustrating a partially enlarged structure at a location C of the air conditioner inFIG. 2 ; - The above drawings include the following reference signs:
10, volute-and-tongue assembly; 11, air flow inlet; 12, air flow outlet; 20, cross-flow blade; 30, first end cap; 40, second end cap; 50, first retaining ring; 51, first retaining ring section for air intake; 52, first retaining ring section for air blow; 60, second retaining ring; 61, second retaining ring section for air intake; 62, second retaining ring section for air blow; 70, air-conditioner air inlet; 80, air-conditioner air outlet; 90, heat exchanger. - It should be noted that the embodiments in the present invention and the features in the embodiments can be combined with each other if no conflicts occur, as long as staying in the scope of the claims. The invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
- It should be noted that the following detailed description is illustrative and is intended to provide a further description of the invention. Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as commonly understood by the ordinary skilled in the art of the present invention.
- It should be noted that terms used herein are only for the purpose of describing specific embodiments and not intended to limit the exemplary embodiments of the present invention. The singular of a term used herein is intended to include the plural of the term unless the context otherwise specifies. In addition, it should also be appreciated that when terms "include" and/or "comprise" are used in the description, they indicate the presence of features, steps, operations, devices, components.
- The present invention provides an air conditioner. Refer to
FIG. 1 andFIG. 2 , the air conditioner includes an air-conditioner air inlet 70, an air-conditioner air outlet 80, and an air duct structure arranged between the air-conditioner air inlet 70 and the air-conditioner air outlet 80. The air duct structure includes across-flow blade 20 and a volute-and-tongue assembly 10. Thecross-flow blade 20 is arranged inside the volute-and-tongue assembly 10. The volute-and-tongue assembly 10 includes anair flow inlet 11 and anair flow outlet 12. Along the extending direction of thecross-flow blade 20, a dimension of theair flow inlet 11 is a; a dimension of theair flow outlet 12 is b; a dimension of the air-conditioner air inlet 70 is h; and a dimension of the air-conditioner air outlet 80 is k, where k < b < a < h. - In the air conditioner of the present invention, along the extending direction of the
cross-flow blade 20, the dimension of theair flow inlet 11 is a; the dimension of theair flow outlet 12 is b; the dimension of the air-conditioner air inlet 70 is h; and the dimension of the air-conditioner air outlet 80 is k. By setting k<b<a<h, the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure can be reduced, thereby avoiding the phenomenon of non-uniform air blow. The air conditioner includes the air-conditioner air inlet 70, the air-conditioner air outlet 80, and the air duct structure disposed between the air-conditioner air inlet 70 and the air-conditioner air outlet 80; the air duct structure includes the volute-and-tongue assembly 10 and thecross-flow blade 20; thecross-flow blade 20 is arranged inside the volute-and-tongue assembly 10. The volute-and-tongue assembly 10 includes theair flow inlet 11 and theair flow outlet 12. The air conditioner of the present invention can reduce the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure, thereby avoiding the phenomenon of non-uniform air blow, and solving the problem of non-uniform air blow of an air duct structure of the air conditioner in the prior art. - In the present embodiment, the volute-and-
tongue assembly 10 has a cross-flow air duct. The cross-flow air duct has anair flow inlet 11 and anair flow outlet 12. - Preferably, 6 mm ≤ a-b ≤ 15 mm.
- In the present embodiment, as for the air duct structure, if the air flow resistance at the air flow inlet becomes larger, the flow-through load resistance of the air duct structure becomes larger; and if the air flow resistance at the air flow outlet becomes larger, the flow-through load resistance of the air duct structure becomes smaller. Therefore, that the dimension of the
air flow outlet 12 is less than the dimension of theair flow inlet 11 helps to ensure the continuity and smoothness of the air flow of the air intake and the air blow. When 6mm ≤ a-b ≤ 15mm, better smoothness of the air flow at the air flow inlet and at the air flow outlet can be ensured, and a larger sheltered dimension of thecross-flow blade 20 can be avoided, thereby ensuring an effective working dimension of thecross-flow blade 20. - In order to further avoid the problem of non-uniform air blow of the air duct structure, as shown in
FIG. 2 , the air duct structure further includes anfirst end cap 30 provided at a first end of the volute-and-tongue assembly 10, and afirst retaining ring 50 provided on thefirst end cap 30. At least a portion of the first end of thecross-flow blade 20 is disposed inside thefirst retaining ring 50. - In the present embodiment, the air duct structure further includes the
first end cap 30 and thefirst retaining ring 50. Thefirst end cap 30 is disposed at the first end of the volute-and-tongue assembly 10, and thefirst retaining ring 50 is provided on thefirst end cap 30. At least a portion of the first end of thecross-flow blade 20 is disposed inside thefirst retaining ring 50. - To ensure a normal operation of the
cross-flow blade 20, thecross-flow blade 20 fits thefirst retaining ring 50 with a clearance. - Preferably, the clearance between the
cross-flow blade 20 and thefirst retaining ring 50 is c, wherein 5 mm ≤ c ≤ 10 mm. - In the present embodiment, the flow volume and the flow rate at two ends of the
cross-flow blade 20 are lower; the pressure gradient is larger; and controlling the clearance to be smaller to reduce drastic changes of the pressure gradient and improve the surge phenomenon caused by the pressure change. However, if the clearance is too small, the requirements for the dynamic balance of the blade and the accuracy of the air duct structure are high, and actually, it is difficult to meet the requirements, thus causing the problem that the fan collides with the inner wall of the air duct structure to generate friction when the fan is running. Therefore, in this embodiment, when 5 mm ≤ c ≤ 10 mm, the drastic changes of the pressure gradient at two ends of thecross-flow blade 20 can be effectively reduced. - As for the specific structure of the
first retaining ring 50, as shown inFIG. 3 , thefirst retaining ring 50 includes a firstretaining ring section 51 for air inlet and a firstretaining ring section 52 for air blow. The firstretaining ring section 51 for air inlet is provided at a side of thefirst end cap 30, and the side of thefirst end cap 30 is adjacent to theair flow inlet 11. The firstretaining ring section 52 for air blow is disposed at another side of thefirst end cap 30, and the other side of thefirst end cap 30 is adjacent to theair flow outlet 12. The distance from the outer end surface of the firstretaining ring section 51 for air inlet to the end surface of the first end of thecross-flow blade 20 is e, and the distance from the outer end surface of the firstretaining ring section 52 for air blow to the end surface of the first end of thecross-flow blade 20 is d, where e < d. - In the present embodiment, the
first retaining ring 50 includes the firstretaining ring section 51 for air inlet and the firstretaining ring section 52 for air blow; the firstretaining ring section 51 for air inlet is provided at the side of thefirst end cap 30, and the side of thefirst end cap 30 is adjacent to theair flow inlet 11, and the firstretaining ring section 52 for air blow is provided at the other side of thefirst end cap 30, and the other side of thefirst end cap 30 is adjacent to theair flow outlet 12. - In order to ensure that the dimension of the
air flow inlet 11 is greater than the dimension of theair flow outlet 12, preferably, the distance from the outer end surface of the firstretaining ring section 51 for air inlet to the end surface of the first end of thecross-flow blade 20 is e, and the distance from the outer end surface of the firstretaining ring section 52 for air blow to the end surface of the first end of thecross-flow blade 20 is d, where e < d. - Preferably, 3 mm ≤ d-e ≤ 8 mm.
- In this embodiment, by setting 3mm ≤ d-e ≤ 8mm, a smooth air flow of the air intake and the air blow can be ensured without causing a large blocking dimension to the
cross-flow blade 20, thereby ensuring an effective operation dimension of thecross-flow blade 20. - Accordingly, the air duct structure further includes a
second end cap 40 provided at the second end of the volute-and-tongue assembly 10, and asecond retaining ring 60 provided on thesecond end cap 40. At least a portion of the second end of thecross-flow blade 20 is disposed inside thesecond retaining ring 60. Thefirst retaining ring 50 and thesecond retaining ring 60 are arranged opposite to each other, and theair flow inlet 11 and theair flow outlet 12 are disposed between thefirst retaining ring 50 and thesecond retaining ring 60. - Preferably, the
cross-flow blade 20 fits thesecond retaining ring 60 with a clearance. - Preferably, the clearance between the
cross-flow blade 20 and thesecond retaining ring 60 is s, wherein 5 mm ≤ s ≤ 10 mm. - As for the specific structure of the
second retaining ring 60, as shown inFIG. 2 andFIG. 4 , thesecond retaining ring 60 includes a secondretaining ring section 61 for air intake, and a secondretaining ring section 62 for air blow. The secondretaining ring section 61 for air intake is provided at a side of thesecond end cap 40, and the side of thesecond end cap 40 is adjacent to theair flow inlet 11. The secondretaining ring section 62 for air blow is disposed at another side of thesecond end cap 40, and the other side of thesecond end cap 40 is adjacent to theair flow outlet 12. The distance from the outer end surface of the secondretaining ring section 61 for air intake to the end surface of the second end of thecross-flow blade 20 is f, and the distance from the outer end surface of the secondretaining ring section 62 for air blow to the end surface of the second end of thecross-flow blade 20 is g, where f < g. - In the present embodiment, the
air flow inlet 11 is disposed between the firstretaining ring section 51 for air inlet and the secondretaining ring section 61 for air intake, and theair flow outlet 12 is disposed between the firstretaining ring section 52 for air blow and the secondretaining ring section 62 for air blow. - Preferably, 3 mm ≤ g-f ≤ 8 mm.
- Preferably, the air conditioner includes the air-
conditioner air inlet 70 and the air-conditioner air outlet 80; the air duct structure is disposed between the air-conditioner air inlet 70 and the air-conditioner air outlet 80; along the extending direction of thecross-flow blade 20, the dimension of the air-conditioner air inlet 70 is greater than the dimension of theair flow inlet 11; and/or the dimension of theair flow outlet 12 is greater than the dimension of the air-conditioner air outlet 80. - Preferably, along the extending direction of the
cross-flow blade 20, the dimension of the air-conditioner air inlet 70 is h, and the dimension of the air-conditioner air outlet 80 is k, wherein 6 mm ≤ h-a ≤ 15 mm, and/or, 6 mm ≤ b-k ≤ 15mm. - In this embodiment, the overall air duct satisfies a variation trend of the dimension of the air duct gradually decreasing along the flow direction. The air-
conditioner air inlet 70, theair flow inlet 11, theair flow outlet 12 and the air-conditioner air outlet 80 are designed to be tapered. - The air conditioner further includes a
heat exchanger 90. Theheat exchanger 90 is disposed between the air-conditioner air inlet 70 and theair flow inlet 11 of the cross-flow air duct. - From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
In the air conditioner of the present invention, along the extending direction of thecross-flow blade 20, the dimension of theair flow inlet 11 is a; the dimension of theair flow outlet 12 is b; the dimension of the air-conditioner air inlet 70 is h; and the dimension of the air-conditioner air outlet 80 is k. By setting k<b<a<h, the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure can be reduced, thereby avoiding the phenomenon of non-uniform air blow. The air conditioner includes the air-conditioner air inlet 70, the air-conditioner air outlet 80, and the air duct structure disposed between the air-conditioner air inlet 70 and the air-conditioner air outlet 80; the air duct structure includes the volute-and-tongue assembly 10 and thecross-flow blade 20; thecross-flow blade 20 is arranged inside the volute-and-tongue assembly 10. The volute-and-tongue assembly 10 includes theair flow inlet 11 and theair flow outlet 12. The air conditioner of the present invention can reduce the return vortexes formed at the positions of two end surfaces of the cross-flow air duct of the air duct structure, thereby avoiding the phenomenon of non-uniform air blow, and solving the problem of non-uniform air blow of the air duct structure of the air conditioner in the prior art. - Two ends of the cross-flow air duct system are relatively low-pressure zones. During the working process of the cross-flow blade, it is easy to form return vortexes at positions of two end surfaces, which causes the phenomenon of non-uniform air blow and causes noise easily. In addition, when the air conditioner is applied to heating and air distribution, external air is engulfed at two end surfaces due to the phenomenon of return vortexes, thus causing the temperatures at two end surfaces to be significantly lower than the temperatures at other positions of the air flow outlet, and there is a problem of non-uniform air blow at the air flow outlet.
- In the air conditioner of the present invention, the overall air duct satisfies the variation trend of the dimension of the air duct structure gradually decreasing along the flow direction. The air-
conditioner air inlet 70, theair flow inlet 11, theair flow outlet 12 and the air-conditioner air outlet 80 are designed to be tapered, which solves the problems of the non-uniform air blow and the non-uniform temperature of the air blow at the end surface of the air flow outlet of the cross-flow air duct. - It should be noted that the terms "first", "second", and the like in the description, claims and drawings of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a specific order or order. It should be appreciated that such terms can be interchangeable if appropriate, so that the embodiments of the invention described herein can be implemented, for example, in an order other than those illustrated or described herein. In addition, the terms "comprise", "have" and any deformations thereof, are intended to cover a non-exclusive inclusion, for example, a process, a method, a system, a product, or a device that includes a series of steps or units is not necessarily limited to explicitly list those steps or units, but can include other steps or units that are not explicitly listed or inherent to such a process, a method, a product or a device.
- For convenience of description, spatially relative terms such as "above", "over", "on a surface of", "upper", etc., may be used herein to describe the spatial position relationships between one device or feature and other devices or features as shown in the drawings. It should be appreciated that the spatially relative term is intended to include different directions during using or operating the device other than the directions described in the drawings. For example, if the device in the drawings is inverted, the device is described as the device "above other devices or structures" or "on other devices or structures" will be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both "above" and "under". The device can also be positioned in other different ways (rotating 90 degrees or at other orientations), and the corresponding description of the space used herein is interpreted accordingly.
Claims (13)
- An air conditioner, comprising an air-conditioner air inlet (70), an air-conditioner air outlet (80), and an air duct structure disposed between the air-conditioner air inlet (70) and the air-conditioner air outlet (80), wherein, the air duct structure comprises:a cross-flow blade (20), anda volute-and-tongue assembly (10), wherein the cross-flow blade (20) is arranged inside the volute-and-tongue assembly (10);wherein the volute-and-tongue assembly (10) comprises an air flow inlet (11) and an air flow outlet (12); along an extending direction of the cross-flow blade (20), a dimension of the air flow inlet (11) is a; a dimension of the air flow outlet (12) is b; a dimension of the air-conditioner air inlet (70) is h; and a dimension of the air-conditioner air outlet (80) is k,
- The air conditioner according to claim 1, characterized in that, 6 mm ≤ a-b ≤ 15 mm.
- The air conditioner according to claim 1, characterized in that, the air duct structure further comprises:a first end cap (30) provided at a first end of the volute-and-tongue assembly (10), anda first retaining ring (50) provided on the first end cap (30), wherein, at least a portion of a first end of the cross-flow blade (20) is disposed inside the first retaining ring (50).
- The air conditioner of claim 3, characterized in that, the cross-flow blade (20) fits the first retaining ring (50) with a clearance.
- The air conditioner according to claim 4, characterized in that, the clearance between the cross-flow blade (20) and the first retaining ring (50) is c, wherein 5 mm ≤ c ≤ 10 mm.
- The air conditioner according to claim 3, characterized in that, the first retaining ring (50) comprises:a first retaining ring section (51) for air intake, and a first retaining ring section (52) for air blow;wherein the first retaining ring section (51) for air intake is provided at a side of the first end cap (30), and the side of the first end cap (30) is adjacent to the air flow inlet (11); the first retaining ring section (52) for air blow is disposed at another side of the first end cap (30), and the other side of the first end cap (30) is adjacent to the air flow outlet (12);a distance from an outer end surface of the first retaining ring section (51) for air intake to an end surface of the first end of the cross-flow blade (20) is e, and a distance from an outer end surface of the first retaining ring section (52) for air blow to the end surface of the first end of the cross-flow blade (20) is d, wherein e < d.
- The air conditioner according to claim 6, characterized in that, 3 mm ≤ d-e ≤ 8 mm.
- The air conditioner according to claim 3, characterized in that, the air duct structure further comprises:a second end cap (40) provided at a second end of the volute-and-tongue assembly (10), anda second retaining ring (60) provided on the second end cap (40); wherein at least a portion of a second end of the cross-flow blade (20) is disposed inside the second retaining ring (60);the first retaining ring (50) and the second retaining ring (60) are arranged opposite to each other;and the air flow inlet (11) and the air flow outlet (12) are disposed between the first retaining ring (50) and the second retaining ring (60).
- The air conditioner of claim 8, characterized in that, the cross-flow blade (20) fits the second retaining ring (60) with a clearance.
- The air conditioner according to claim 9, characterized in that, the clearance between the cross-flow blade (20) and the second retaining ring (60) is s, wherein 5 mm ≤ s ≤ 10 mm.
- The air conditioner according to claim 8, characterized in that, the second retaining ring (60) comprises:a second retaining ring section (61) for air intake, and a second retaining ring section (62) for air blow;wherein, the second retaining ring section (61) for air intake is provided at a side of the second end cap (40), and the side of the second end cap (40) is adjacent to the air flow inlet (11); the second retaining ring section (62) for air blow is disposed at another side of the second end cap (40), and the other side of the second end cap (40) is adjacent to the air flow outlet (12);a distance from an outer end surface of the second retaining ring section (61) for air intake to an end surface of a second end of the cross-flow blade (20) is f, and a distance from an outer end surface of the second retaining ring section (62) for air blow to the end surface of the second end of the cross-flow blade (20) is g, wherein f < g.
- The air conditioner according to claim 11, characterized in that, 3 mm ≤ g-f ≤ 8 mm.
- The air conditioner according to claim 1, characterized in that, 6 mm ≤ h-a ≤ 15 mm, and/or, 6 mm ≤ b-k ≤ 15mm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711299373.3A CN108266794B (en) | 2017-12-08 | 2017-12-08 | Air conditioner |
PCT/CN2018/118958 WO2019109891A1 (en) | 2017-12-08 | 2018-12-03 | Air conditioner |
Publications (3)
Publication Number | Publication Date |
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EP3640548A1 EP3640548A1 (en) | 2020-04-22 |
EP3640548A4 EP3640548A4 (en) | 2020-06-17 |
EP3640548B1 true EP3640548B1 (en) | 2023-07-26 |
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ID=62772153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18885141.4A Active EP3640548B1 (en) | 2017-12-08 | 2018-12-03 | Air conditioner |
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EP (1) | EP3640548B1 (en) |
CN (1) | CN108266794B (en) |
WO (1) | WO2019109891A1 (en) |
Families Citing this family (1)
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CN108266794B (en) * | 2017-12-08 | 2020-01-17 | 珠海格力电器股份有限公司 | Air conditioner |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5487405U (en) * | 1977-12-02 | 1979-06-20 | ||
JP2001201078A (en) * | 2000-01-19 | 2001-07-27 | Mitsubishi Heavy Ind Ltd | Indoor unit and airconditioner |
WO2013080395A1 (en) * | 2011-12-02 | 2013-06-06 | 三菱電機株式会社 | Air conditioner |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100848903B1 (en) * | 2002-03-07 | 2008-07-29 | 엘지전자 주식회사 | Ceiling-installed air conditioner |
JP5369141B2 (en) * | 2011-06-10 | 2013-12-18 | 三菱電機株式会社 | Air conditioner |
CN202361596U (en) * | 2011-11-23 | 2012-08-01 | 广东美的电器股份有限公司 | Indoor unit of wall-mounted air conditioner |
CN203489363U (en) * | 2013-08-28 | 2014-03-19 | 珠海格力电器股份有限公司 | Air purifier |
CN104696281A (en) * | 2013-12-04 | 2015-06-10 | 珠海格力电器股份有限公司 | Fan and air conditioner with same |
CN105509280B (en) * | 2015-12-30 | 2018-09-04 | 美的集团武汉制冷设备有限公司 | Air fairing and air conditioner |
CN206094308U (en) * | 2016-09-20 | 2017-04-12 | Tcl空调器(中山)有限公司 | Air conditioner indoor unit and air conditioner |
CN108266794B (en) * | 2017-12-08 | 2020-01-17 | 珠海格力电器股份有限公司 | Air conditioner |
CN207570012U (en) * | 2017-12-08 | 2018-07-03 | 珠海格力电器股份有限公司 | Air conditioner |
-
2017
- 2017-12-08 CN CN201711299373.3A patent/CN108266794B/en active Active
-
2018
- 2018-12-03 WO PCT/CN2018/118958 patent/WO2019109891A1/en unknown
- 2018-12-03 EP EP18885141.4A patent/EP3640548B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5487405U (en) * | 1977-12-02 | 1979-06-20 | ||
JP2001201078A (en) * | 2000-01-19 | 2001-07-27 | Mitsubishi Heavy Ind Ltd | Indoor unit and airconditioner |
WO2013080395A1 (en) * | 2011-12-02 | 2013-06-06 | 三菱電機株式会社 | Air conditioner |
Also Published As
Publication number | Publication date |
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EP3640548A4 (en) | 2020-06-17 |
EP3640548A1 (en) | 2020-04-22 |
CN108266794A (en) | 2018-07-10 |
CN108266794B (en) | 2020-01-17 |
WO2019109891A1 (en) | 2019-06-13 |
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