CN213542816U - Machine and air conditioner in spiral case, air conditioning - Google Patents

Abstract

The utility model provides a machine and air conditioner in spiral case, air conditioning, spiral case (2) are including bottom plate (3) that are located its air inlet direction one side, spiral case (2) are still including setting up on bottom plate (3), and be located stator (4) of air outlet (5) department of spiral case (2), stator (4) are at least one, can with spiral case (2) the wind separation of air outlet (5) department becomes two at least air-out passageways. According to the utility model discloses make the air current of water conservancy diversion wall to the direction of spiral case distribute more evenly, even it is more even to obtain the air outlet air current and flow, it is mobile to improve centrifugal fan export, effectively prevents and has avoided producing the phenomenon of backward flow in spiral tongue department, improves fan efficiency, solves the air-out backward flow of centrifugal hanging machine, the problem of inefficiency, it is inhomogeneous to solve centrifugal hanging machine wind gap air-out simultaneously, the poor problem of travelling comfort, still reduce air-out air current disturbance and friction and collision simultaneously, the noise abatement.

Description

Machine and air conditioner in spiral case, air conditioning

Technical Field

The utility model relates to an air conditioning technology field, concretely relates to machine and air conditioner in spiral case, air conditioning.

Background

The prior air conditioner has more cross-flow fans, more air port flow guide components aiming at the air outlet characteristics of the cross-flow fans, relatively short air port flow guide components aiming at the air conditioner of the centrifugal fan system, high-pressure airflow at the air outlet of a centrifugal volute easily flows back to a volute tongue gap of low pressure, so that vortex loss and backflow loss are generated in the volute, the efficiency of the centrifugal fan is reduced, discontinuous vortex noise exists at the outlet of the volute, the tone quality of the air conditioner is poor, and therefore, an air guide device aiming at the air outlet characteristics of the centrifugal fan is urgently needed to dredge the airflow, improve the efficiency of the fan and reduce the noise.

Patent CN209541124U proposes an air outlet guide plate for a circular through-flow cabinet, in which a reinforcing rib and an air diffuser are arranged at an upper air outlet and a lower air outlet to define a flow channel of air flow together, so as to reduce air flow turbulence and friction collision, but the air flow is separated by a single rib, and the problem of air flow along-path resistance and air resistance of the rib to the air flow cannot be solved well. Patent CN204553346U proposes an air processing device for a volute of a centrifugal fan, which mainly sets an auxiliary volute tongue on a main volute tongue to prevent backflow, improve air supply tone, improve air supply effect, reduce power consumption of a motor, etc., but it does not have the functions of guiding air, improving turbulence and changing air outlet direction.

Because the indoor centrifugal hanging machine of air conditioner among the prior art has the air-out at the phenomenon of the inside backward flow of spiral case, leads to technical problem such as inefficiency, consequently the utility model discloses the research designs a spiral case, indoor set of air conditioner and air conditioner.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art that there is the phenomenon that the indoor centrifugal wall-hung machine of air conditioner has the air-out at the inside backward flow of spiral case in the air conditioning indoor set, leads to the defect of inefficiency to a spiral case, air conditioning indoor set and air conditioner are provided.

In order to solve the above problem, the utility model provides a spiral case, wherein:

the spiral case is including being located the bottom plate of the axial direction one side of its air inlet, the spiral case is still including setting up on the bottom plate, and be located the stator of the air outlet department of spiral case, the stator is at least one, can with the spiral case the wind of air outlet department separates into two at least air-out passageways.

Preferably, one end of the guide vane is connected with the air outlet, and the other end of the guide vane extends towards the inside of the volute; and/or the volute comprises a flow guide wall and a volute tongue, the flow guide wall and the volute tongue are arranged oppositely, the flow guide wall extends to the position of the air outlet, and the guide vane separates and guides the flow of a flow channel between the flow guide wall and the volute tongue.

Preferably, when the guide wall and the volute tongue are included: the guide vanes are more than two and are arranged side by side along the direction from the flow guide wall to the volute tongue; and/or the guide vane is a curved guide vane, and the curved shape of the guide vane is set to guide airflow towards the direction of the volute tongue.

Preferably, a plane perpendicular to the end surface of the air outlet is defined as a first plane, and the first plane is a plane where the bottom plate is located; and in the linear lengths of the projections of two or more guide vanes on the first plane: the length of a projection straight line of the guide vane relatively close to the guide wall side is longer than that of the guide vane relatively far away from the guide wall side.

Preferably, there are 4 guide vanes, 4 guide vanes are arranged in sequence along the direction from the flow guide wall to the volute tongue, and the projection straight line length of the guide vane on the first plane is L1, L2, L3 and L4 in sequence from the direction from the flow guide wall to the volute tongue, and there are: l1 (80% -100%) L, L2 (70% -80%) L, L3 (60% -70%) L, L4 (50% -60%) L, and L1> L2> L3> L4, wherein L is the length of the volute diffusion section, namely the linear distance between the volute tongue and the end face of the air outlet.

Preferably, the end face of the guide vane, which is connected with the bottom plate, is defined as a first end face, the end face of the guide vane, which is opposite to the first end face, is defined as a second end face, the distance between the first end face and the second end face is defined as a height difference H, the height differences between the first end face and the second end face of the guide vane in the direction from the guide wall to the volute tongue are H1, H2, H3 and H4 in sequence, and H1 is more than or equal to H2 and more than or equal to H3 and more than or equal to H4.

Preferably, in the two or more guide vanes, a distance from the guide vane closest to the guide wall side to the guide vane closest to the volute tongue side on the end surface of the air outlet along the direction from the guide wall to the volute tongue is h,

the distance between the flow guide wall and the connecting wall of the volute tongue along the direction from the flow guide wall to the volute tongue is K,

and h ═ 60% to 80% K.

Preferably, the end face of the guide vane that meets with the bottom plate is a first end face, the end face of the guide vane that is back to the back with the first end face is a second end face, and at the windward end of the guide vane, a torsion angle θ is formed between the tangent of a side arc of the first end face and the tangent of the same side arc of the second end face, wherein the torsion angle is an included angle between the tangent of a first position point of the blade-shaped projection on the volute bottom plate at the upper end of the blade and the tangent of a second position point of the blade-shaped projection at the bottom plate, and the first position point and the second position point are at different heights in the same vertical direction, and θ is 10 ° -30 °.

Preferably, an included angle formed between a tangent plane direction of the guide vane at the end face of the air outlet and the end face of the air outlet is β, and is greater than or equal to 90 ° and less than or equal to 150 °.

Preferably, when the guide wall and the volute tongue are included: the number of the guide vanes is 4, the 4 guide vanes are sequentially arranged along the direction from the guide wall to the volute tongue, an included angle formed between the tangential direction of the guide vanes at the end face of the air outlet and the end face of the air outlet from the direction from the guide wall to the volute tongue is beta 1, beta 2, beta 3 and beta 4, and the included angle is beta 1 to beta 1 is greater than or equal to 120 degrees and less than or equal to 150 degrees, beta 2 to 120 degrees and less than or equal to 130 degrees, beta 3 to less than or equal to 120 degrees and beta 4 to 90 degrees and less than or equal to 110 degrees.

The utility model also provides an air-conditioning indoor unit, it includes preceding arbitrary the spiral case, still include centrifugal fan blade, centrifugal fan blade set up in the spiral case.

Preferably, the number of the centrifugal fan blades is more than two, the number of the volutes is more than two, and the centrifugal fan blades and the volutes are arranged in a one-to-one correspondence manner; and/or the presence of a gas in the gas,

the air outlet of the volute is used for discharging air towards the horizontal direction, the volute further comprises an air inlet, and the air inlet of the volute is located on the upper end face and/or the lower end face of the volute and used for feeding air from the upper side and/or feeding air from the lower side.

Preferably, the heat exchanger comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is arranged above the volute, and the second heat exchanger is arranged below the volute.

The utility model also provides an air conditioner, it includes preceding arbitrary air conditioning indoor unit.

The utility model provides a pair of machine and air conditioner have following beneficial effect in spiral case, air conditioning:

the utility model discloses a set up a novel spiral case structure, the spiral case exit end arranges the stator, the stator can be evacuated the air-out air current, make the air current more carry out the water conservancy diversion towards the spiral case position, make the air current distribution of direction of water conservancy diversion wall to spiral case more even, even make the air current flow of air outlet more even, improve centrifugal fan outlet flow, effectively prevent and avoid the phenomenon that produces the backward flow at the spiral case position, improve fan efficiency, solve the air-out backward flow of centrifugal hanging machine, the problem of inefficiency, solve the air outlet of centrifugal hanging machine wind gap uneven simultaneously, the problem of travelling comfort difference, still reduce air-out air current disturbance and friction collision simultaneously, reduce the noise; can make the air-out angle big through two centrifugal fan structures, the wide range prevents that the air current from blowing directly, improves the travelling comfort.

Drawings

FIG. 1 is a structural view of the whole air conditioner indoor unit of the present invention;

fig. 2 is a top internal view of the indoor unit of the air conditioner of the present invention;

fig. 3 is a schematic three-dimensional structure diagram of a volute in an indoor unit of an air conditioner of the present invention;

fig. 4 is a top internal view of the volute in the indoor unit of the air conditioner of the present invention;

fig. 5 is a three-dimensional structure view of the scroll casing of the indoor unit of the air conditioner according to the present invention in place of embodiment 1;

fig. 6 is a three-dimensional structure view of the scroll casing in the indoor unit of the air conditioner according to the embodiment 2;

fig. 7 is a top view of the scroll casing in the indoor unit of the air conditioner according to the alternative embodiment 2 of the present invention;

fig. 8 is an enlarged view of the guide vane windward side in the volute of the indoor unit of the air conditioner of the present invention in a drop shape.

The reference numerals are represented as:

1. a centrifugal fan blade; 2. a volute; 21. a flow guide wall; 22. a volute tongue; 23. an air inlet; 3. a base plate; 4. a guide vane; 41. a first end face; 42. a second end face; 5. an air outlet; 6. a heat exchanger; 61. a first heat exchanger; 62. a second heat exchanger; 8. and a controller.

Detailed Description

The utility model discloses the whole text indicates "horizontal direction" and indicates the direction parallel with ground, and the direction of the perpendicular to ground that "top" indicates is located the top of certain object, and the direction of the perpendicular to ground that "below" indicates is located the below of certain object.

As shown in fig. 1-8, the present invention provides a spiral casing, wherein:

the spiral case 2 is including being located its air inlet direction one side bottom plate 3, spiral case 2 is still including setting up on the bottom plate 3, and be located the stator 4 of 5 departments of the air outlet of spiral case 2, stator 4 is at least one, can with spiral case 2 the wind of 5 departments of air outlet separates into two at least air-out passageways.

The utility model discloses a set up a neotype spiral case structure, the stator is arranged to the spiral case exit end, the stator can be sparse to the air-out air current, make the air current more carry out the water conservancy diversion towards spiral case tongue position, make the air current of water conservancy diversion wall to the direction of spiral case distribute more evenly, even it is more even to obtain the air outlet air current and flow, it flows to improve centrifugal fan export, effectively prevent and avoided the phenomenon that produces the backward flow in spiral case tongue department, improve fan efficiency, solve the backward flow of centrifugal hanging machine air-out, the problem of inefficiency, it is uneven to solve centrifugal hanging machine air outlet air-out simultaneously, the poor problem of travelling comfort, still reduce air-out air current disturbance and friction and collision simultaneously, the noise is reduced.

The utility model provides a novel spiral case structure, this spiral case structure has export air ducting, and it is evenly arranged side by side on spiral case export bottom plate by a plurality of curved surface stator for sparse air current improves centrifugal fan air-out uniformity, and curved surface stator can be integrated into one piece with the spiral case, also can make detachable installation module, through set up the spiral shell hole site on curved surface stator, beats the curved surface stator at the spiral case relevant position by the screw, realizes detachable water conservancy diversion structure; the novel volute is used for the centrifugal wall hanging machine, so that air outlet of the wall hanging machine is uniform, outlet backflow is reduced, and fan efficiency is improved. The air conditioner includes: the novel centrifugal fan comprises a shell, double centrifugal fans, a novel volute, an evaporator, a controller component and an air inlet and an air outlet. The front surface of the shell is provided with an air outlet and is communicated with volute outlets of two double-suction centrifugal fans to form a front air outlet, the upper side and the lower side of the shell are respectively provided with an air inlet to provide air inlet airflow for the double-suction centrifugal impellers, the fan component consists of the double-suction centrifugal impellers and a novel volute, the double-suction centrifugal fan blades can intake air from the upper side and the lower side and blow out air from the volute air outlet, the air outlet airflow can be more uniformly blown out from the air outlet through the diversion of curved guide vanes, meanwhile, the backflow of the air outlet can be effectively reduced by the curved guide vanes, the air quantity of the whole machine is improved (the conventional centrifugal volute has backflow at the volute tongue, the controller component is arranged at the right side of the fan component to realize independent and accurate control of the fan component due to the fact that the outflow of the outlet airflow is uneven, a V-shaped heat exchanger is arranged between the upper air inlet and the fan part, and a straight plate type heat exchanger is also arranged between the lower air inlet and the fan part.

In fig. 2, an air flow enters the centrifugal fan blade 1 through an upper air inlet and a lower air inlet centrifugal fan system respectively, passes through an upper first heat exchanger 61 and a lower second heat exchanger 62, and is pressurized under the combined action of the volute 2, so that the air flow flows out of the air outlet 5, and is subjected to the flow guide and evacuation effects of the curved guide vane 4 arranged at the air outlet 5 when passing through the air outlet 5; through set up the sparse air current that curved surface stator can be better in the wind gap, avoid the air current too concentrated, can evenly flow out, reduce backward flow and reduce the vortex.

Preferably, one end of the guide vane 4 is connected with the air outlet 5, and the other end extends towards the inside of the volute 2; and/or the volute casing 2 comprises a flow guide wall 21 and a volute tongue 22, the flow guide wall 21 is arranged opposite to the volute tongue 22, the flow guide wall 21 extends to the position of the air outlet 5, and the guide vane 4 divides and guides a flow passage between the flow guide wall 21 and the volute tongue 22.

This is the utility model discloses a further preferred structural style of stator, the position that the stator extends to the air outlet from the inside bottom plate of air outlet promptly, can effectively hang down the air current water conservancy diversion of air outlet department to the air outlet outside to the air current to air-out passageway department is separated and is directed flow, can make the air current direct flow towards snail tongue department promptly, makes snail tongue department can not produce the phenomenon that pressure is too low, takes place the backward flow in this department because the air current is less, makes the air current flow more even; the guide vane is arranged at the air outlet channel between the guide wall and the volute tongue, so that the air flow at the air outlet channel is effectively ensured to generate a better drainage effect.

Preferably, when the guide wall 21 and the volute tongue 22 are included: the number of the guide vanes 4 is more than two, and the guide vanes are arranged side by side along the direction from the flow guide wall 21 to the volute tongue 22; and/or the guide vane 4 is a guide vane with a curved surface shape, and the curved surface shape of the guide vane 4 is set to guide the airflow towards the volute tongue 22. The guide vanes are arranged side by side along the direction from the flow guide wall 21 to the volute tongue 22, so that airflow between the flow guide wall and the volute tongue can be uniformly distributed, the airflow between the volute tongue and the flow guide wall tends to be uniform more, the guide vane structure in a curved surface shape can further improve the guiding effect on the airflow, the backflow at the volute tongue and even at the whole air outlet is reduced, and the air volume of the whole machine is improved.

Preferably, the number of the guide vanes 4 is 3 to 6, and more preferably 4.

Preferably, a plane perpendicular to the end surface of the air outlet 5 is defined as a first plane, and the first plane is a plane where the bottom plate 3 is located; and two or more of the guide vanes 4 in the linear lengths of their projections on the first plane: the length of a projection straight line of the guide vane 4 relatively close to the guide wall 21 side is longer than that of the guide vane 4 relatively far from the guide wall 21 side. The arrangement form can ensure that the extension length of the guide vane on the flow guide wall side is greater than that of the guide vane on the volute tongue side, and the flow at the volute tongue is generally less than the airflow flow at the flow guide wall side, so that the structure form can further ensure that an area with large flow is preferably contacted and guided to an area with small flow by the guide vane, further improve the effect of guiding the flow towards the volute tongue, and improve the transverse uniform distribution of the airflow in the graph 4.

Preferably, there are 4 guide vanes 4, 4 guide vanes are sequentially arranged along the direction from the flow guide wall 21 to the volute tongue 22, and the projection straight lengths of the guide vanes 4 on the first plane from the flow guide wall 21 to the volute tongue 22 are L1, L2, L3 and L4, and the projection straight lengths of the 4 guide vanes on the first plane have a relationship with the length of the volute diffusion section, and there are: l1 (80% -100%) L, L2 (70% -80%) L, L3 (60% -70%) L, L4 (50% -60%) L, and L1> L2> L3> L4, wherein L is the length of the volute diffusion section, namely the linear distance between the volute tongue 22 and the end face of the air outlet 5. This is the further preferred structural style of a plurality of stator that distribute side by side of the utility model, and extension length reduces from left to right in figure 4 gradually, can further improve the effect of the place water conservancy diversion of orientation snail tongue, further improves the horizontal evenly distributed nature of air current in figure 4.

As shown in fig. 3, because the centrifugal volute has a high wind speed at the side far from the volute tongue, a large flow rate, and a large amount of airflow flows out from the side far from the volute tongue, the airflow at the side needs to be guided to the position where the flow rate at the side of the volute tongue is small, and the outlet uniformity of the whole outlet is ensured, so that the curved guide vane arc length L1-L4 and the volute diffuser length L satisfy the above relationship, and the outlet uniformity can be improved, and backflow can be prevented.

Preferably, as shown in fig. 5, an end surface of the guide vane 4 connected to the bottom plate 3 is defined as a first end surface 41, an end surface of the guide vane 4 opposite to the first end surface 41 is defined as a second end surface 42, a distance between the first end surface 41 and the second end surface 42 is defined as a height difference H, and a distance between the first end surface 41 and the second end surface 42 of the guide vane 4 relatively close to the side of the guide wall 21 in a direction from the guide wall 21 to the volute tongue 22 is greater than a distance between the first end surface 41 and the second end surface 42 of the guide vane 4 relatively far from the side of the guide wall 21. Because the position air current velocity of the stator blade that is close to the water conservancy diversion wall side is located is high, and the flow is big, and the position velocity of flow that the stator blade that is close to the snail tongue side is located is less, and the flow is little, consequently design curved surface stator has certain difference in height, can make the regional air current that the big velocity of flow is high better deflect and flow to the region that the little velocity of flow is little, makes the air outlet air current more even, and can effectively prevent the back flow of snail tongue side, the noise reduction improves tone quality, improves the air supply effect.

Preferably, the height difference between the first end surface 41 and the second end surface 42 of the guide vane 4 in the direction from the flow guide wall 21 to the volute tongue 22 is H1, H2, H3 and H4 in sequence, and H1 is more than or equal to H2 and more than or equal to H3 and more than or equal to H4. This is the further preferred structural style of a plurality of stator that distribute side by side of the utility model, and the extension height reduces from left to right in figure 5 gradually, can further improve the effect of the place water conservancy diversion of orientation snail tongue, further improves the horizontal evenly distributed nature of air current in figure 5.

As shown in fig. 4, preferably, in the two or more guide vanes 4, the distance between the guide vane 4 closest to the guide wall 21 side and the guide vane 4 closest to the volute tongue 22 side on the end surface of the air outlet 5 along the direction from the guide wall 21 to the volute tongue 22 is h,

the distance between the flow guide wall 21 and the connecting wall of the volute tongue 22 at the end face of the air outlet 5 along the direction from the flow guide wall 21 to the volute tongue 22 is K,

and h ═ 60% to 80% K.

The shared outlet width h of stator has certain relation with spiral case outlet width K, and the shared outlet width of stator is too big, influences the outflow of air current, and the shared outlet width undersize of stator, the effect of water conservancy diversion that plays that can not be fine again, for guaranteeing effective air-out area, h ═ 75% K, preferred value h ═ 75% K

Preferably, the end face of the guide vane 4 connected to the bottom plate 3 is a first end face 41, the end face of the guide vane 4 opposite to the first end face 41 is a second end face 42, and at the windward end of the guide vane 4, a torsion angle θ is formed between a tangent of a side arc line of the first end face 41 and a tangent of the same side arc line of the second end face 42, and θ is 10 ° to 30 °. As shown in fig. 6 and 7, for another alternative implementation of the novel volute, the curved guide vane can be designed as a non-straight blade, the curved guide vane can be designed as a twisted blade with a certain twist angle θ, wherein the twist angle is an included angle between a tangent line of a first position point of a blade shape projected onto a bottom plate of the volute at the upper end of the blade and a tangent line of a second position point of the blade shape at the bottom plate, the first position point and the second position point are different heights in the same vertical direction, and the twist angle θ is 10 ° to 30 °.

Preferably, an included angle formed between a tangent plane direction of the guide vane 4 at the end face of the air outlet 5 and the end face of the air outlet 5 is β, and is greater than or equal to 90 ° and less than or equal to 150 °. By setting the inclination angle beta between 90 degrees and 150 degrees, the airflow can be deflected better, and the flow guiding effect on the airflow is further improved.

Preferably, when the guide wall 21 and the volute tongue 22 are included: the number of the guide vanes is 4, the 4 guide vanes 4 are sequentially arranged along the direction from the guide wall 21 to the volute tongue 22, and an included angle formed between the tangential direction of the guide vane 4 at the end face of the air outlet 5 and the end face of the air outlet 5 from the direction from the guide wall 21 to the volute tongue 22 is β 1, β 2, β 3 and β 4 in sequence, and 120 ° β 1 ≦ 150 °, 120 ° β 2 ≦ 130 °, 110 ° β 3 ≦ 120 °, 90 ° β 4 ≦ 110 °. The inclination angle β of the curved guide vane is related to the air flow velocity and direction at the tuyere, and in order to further better deflect the air flow, it is preferable to satisfy the condition that β 1 is larger than or equal to 120 ° -150 °, β 2 is larger than or equal to 120 ° -130 °, β 3 is larger than or equal to 110 ° -120 °, and β 4 is larger than or equal to 90 ° -110 °, so as to further improve the effect of guiding the air flow toward the volute tongue, and further improve the transverse uniform distribution of the air flow in fig. 4.

Preferably, the projection shape of the windward end of the guide vane 4 on the bottom plate 3 is a 'drop shape'; and/or the guide vane 4 and the bottom plate 3 are integrally formed or detachably connected. The windward side of the curved guide vane is in a 'drop shape' design, so that the curved guide vane is more in line with the flow characteristic of fluid, the wind resistance of the guide vane is reduced, and the flow loss in a flow channel is reduced; the curved guide vane can be integrally formed with the volute and can also be manufactured into a detachable installation module, and the curved guide vane is punched at the corresponding position of the volute by a screw through arranging a screw hole position on the curved guide vane to realize a detachable flow guide structure; the novel volute is used for the centrifugal wall hanging machine, so that air outlet of the wall hanging machine is uniform, outlet backflow is reduced, and fan efficiency is improved.

The utility model also provides an air-conditioning indoor unit, it includes preceding arbitrary the spiral case, still include centrifugal fan blade 1, centrifugal fan blade 1 set up in spiral case 2. In the volute of the utility model, the centrifugal fan is arranged in the volute and used for sucking and blowing air, the outlet end of the volute is provided with the curved guide vane, and the guide vane is used for evacuating the air outlet airflow, so that the air outlet airflow flows more uniformly, and the problem of low efficiency caused by the backflow of the air outlet of the centrifugal wall hanging machine is solved; the problems of uneven air outlet and poor comfort of the air outlet of the centrifugal wall hanging machine are solved; the outlet backflow of the centrifugal fan is effectively prevented, and the fan efficiency is improved; the outlet flow of the centrifugal fan is improved, so that the flow of the air port is more uniform; the disturbance and the friction collision of the air outlet flow are reduced, and the noise is reduced; the air outlet angle is large, the range is wide, the air flow is prevented from being blown straight, and the comfort is improved.

Preferably, the number of the centrifugal fan blades 1 is more than two, the number of the volutes 2 is more than two, and the centrifugal fan blades 1 and the volutes 2 are arranged in a one-to-one correspondence manner; and/or the presence of a gas in the gas,

the air outlet 5 of the volute 2 is air-out towards the horizontal direction, the volute 2 further comprises an air inlet 23, and the air inlet 23 of the volute is positioned on the upper end surface and/or the lower end surface of the volute 2 so as to intake air from the upper side and/or intake air from the lower side.

The utility model can further increase the air outlet angle and the air outlet range, prevent the air flow from blowing directly and further improve the comfort through more than two centrifugal fan blades and the volute structures arranged one by one; and the volute is preferably set to be in a structural form of air inlet from top to bottom and air outlet from the front.

Preferably, the heat exchanger 6 is further included, and the heat exchanger 6 includes a first heat exchanger 61 and a second heat exchanger 62, wherein the first heat exchanger 61 is disposed above the volute 2, and the second heat exchanger 62 is disposed below the volute 2. The utility model discloses because there are the air intake (air inlet about preferred) of two directions, consequently need set up the heat exchanger between the spiral case that gets into centrifugal fan, the air current that so first air intake got into gets into centrifugal fan after carrying out the heat transfer through first heat exchanger and is blown off, and the air current that the second air intake got into is blown off in getting into centrifugal fan after the heat transfer of second heat exchanger, has increased heat transfer area, has improved heat transfer effect.

In fig. 1, the air flow enters the centrifugal fan system from the upper air inlet and the lower air inlet respectively, passes through the first heat exchanger 61 at the upper part and the second heat exchanger 62 at the lower part and then enters the centrifugal fan blade 1, and the air current is pressurized under the combined action of the volute 2, so that the air current flows out from the air outlet 5, the air current can be subjected to the diversion and evacuation actions of the guide vane 4 which is arranged on the curved surface at the air outlet 5 when passing through the air outlet, the hidden danger that condensed water drops into the air inlet machine and dust deposition drops into the air inlet machine exists in the upper evaporator of the air conditioner, therefore, the inclination angle of the V-shaped evaporator must meet the requirement that the angle is more than or equal to 35 degrees, meanwhile, the controller 8 can independently and accurately control the two centrifugal fans, so that the rotating speeds of the two centrifugal fans can be adjusted according to working condition requirements, and the operation and the stop of the fans can be selectively controlled according to requirements, so that the air outlet and the air volume of the air conditioner can meet the requirements of a human body, and the comfort is improved.

Preferably, the first heat exchanger 61 is a heat exchanger with a vertical section in a "V" shape or a heat exchanger with a vertical section in a "W" shape, the "V" port of the "V" shaped heat exchanger faces upward, and the "W" port of the "W" shaped heat exchanger faces upward; and/or the second heat exchanger 62 is a horizontally arranged straight plate heat exchanger. The first heat exchanger is arranged above the fan, and is arranged into the V-shaped heat exchanger or the W-shaped heat exchanger, the V-shaped opening faces upwards, and the W-shaped opening faces upwards, so that condensed water formed by condensation of air flow through the evaporator can be effectively collected, and the condensed water is prevented from dripping into the fan to cause potential safety hazards; the utility model discloses a be located the preferred form that sets up of second heat exchanger of below, because the heat exchanger that is located the fan below does not exist and has the comdenstion water to fall into the hidden danger in the fan, consequently consider to set up the heat exchanger into the straight plate heat exchanger that the level set up, can increase heat transfer area, improve heat transfer effect.

Preferably, when the first heat exchanger 61 is a heat exchanger with a V-shaped longitudinal section, the V-shaped heat exchanger includes a first straight plate section and a second straight plate section, and an included angle between the first straight plate section and a horizontal plane is greater than or equal to 35 °, and an included angle between the second straight plate section and the horizontal plane is greater than or equal to 35 °. The utility model discloses still be through being the contained angle between two straight sections and the horizontal direction with "V" shape heat exchanger more than 35 can further effectively avoid the evaporimeter to drip and fall the ash in the fan, guarantee the safe operation of fan.

The utility model also provides an air conditioner, it includes preceding arbitrary air conditioning indoor unit. The utility model provides a novel spiral case structure, this spiral case structure have export air ducting, and it comprises a plurality of curved surface stator for sparse air current improves centrifugal fan air-out homogeneity, has solved the air-out inequality of centrifugal hanging machine simultaneously, exports backward flow, fan inefficiency, the big scheduling problem of noise.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (14)

1. A spiral casing, characterized by:

spiral case (2) are including being located bottom plate (3) of its air inlet direction one side, spiral case (2) are still including setting up on bottom plate (3), and be located stator (4) of air outlet (5) department of spiral case (2), stator (4) are at least one, can with spiral case (2) the wind of air outlet (5) department separates into two at least air-out passageways.

2. The spiral casing of claim 1 wherein:

one end of the guide vane (4) is connected with the air outlet (5), and the other end extends towards the inside of the volute (2); and/or the volute (2) comprises a flow guide wall (21) and a volute tongue (22), the flow guide wall (21) is arranged opposite to the volute tongue (22), the flow guide wall (21) extends to the position of the air outlet (5), and the guide vane (4) divides and guides a flow passage between the flow guide wall (21) and the volute tongue (22).

3. The spiral casing of claim 2 wherein:

when comprising the guide wall (21) and the volute tongue (22): the guide vanes (4) are more than two and are arranged side by side along the direction from the flow guide wall (21) to the volute tongue (22); and/or the guide vane (4) is a curved guide vane, and the curved shape of the guide vane (4) is set to guide airflow towards the direction of the volute tongue (22).

4. The spiral casing of claim 3 wherein:

a plane perpendicular to the end face of the air outlet (5) is defined as a first plane, and the first plane is a plane where the bottom plate (3) is located; and in the linear lengths of the projections of two or more guide vanes (4) on the first plane: the length of a projection straight line of the guide vane (4) relatively close to the side of the flow guide wall (21) is longer than that of the guide vane (4) relatively far away from the side of the flow guide wall (21).

5. The spiral casing of claim 4 wherein:

the number of the guide vanes (4) is 4, the 4 guide vanes are sequentially arranged along the direction from the flow guide wall (21) to the volute tongue (22), the projection straight line length of the guide vanes (4) on the first plane is sequentially L1, L2, L3 and L4 from the direction from the flow guide wall (21) to the volute tongue (22), and the guide vanes are provided with: l1 (80% -100%) L, L2 (70% -80%) L, L3 (60% -70%) L, L4 (50% -60%) L, and L1> L2> L3> L4, wherein L is the diffusion section length of the volute, namely the straight-line distance between the volute tongue (22) and the end face of the air outlet (5).

6. The spiral casing of claim 3 wherein:

defining the guide vane (4) with the terminal surface that bottom plate (3) meet is first terminal surface (41), the guide vane (4) with the terminal surface that first terminal surface (41) carried on the back is second terminal surface (42), the distance between first terminal surface (41) and second terminal surface (42) is difference in height H:

the height difference between the first end face (41) and the second end face (42) of the guide vane (4) in the direction from the flow guide wall (21) to the volute tongue (22) is H1, H2, H3 and H4 in sequence, and H1 is more than or equal to H2 and more than or equal to H3 and more than or equal to H4.

7. The spiral casing of claim 3 wherein:

among the more than two guide vanes (4), the distance between the guide vane (4) closest to the guide wall (21) side and the guide vane (4) closest to the volute tongue (22) side on the end surface of the air outlet (5) along the direction from the guide wall (21) to the volute tongue (22) is h,

the distance between the flow guide wall (21) and the connecting wall of the volute tongue (22) at the end surface of the air outlet (5) along the direction from the flow guide wall (21) to the volute tongue (22) is K,

and h ═ 60% to 80% K.

8. The spiral casing of claim 3 wherein:

the end face that stator (4) and bottom plate (3) meet is first end face (41), the terminal surface of stator (4) with first end face (41) back to the back is second end face (42), and be in the windward end department of stator (4), press from both sides between the tangent line of a side arc line of first end face (41) and the tangent line of the same side arc line of second end face (42) and establish torsion angle theta, wherein torsion angle is the contained angle between the tangent line of the first position point on blade upper end lobate projection to the spiral case bottom plate and the tangent line of the second position point of lobate at bottom plate department lobate, and first position point and second position point are for being located the different height on same vertical direction to theta is 10 ° -30 °.

9. The spiral casing of any of claims 1 to 8 wherein:

the guide vane (4) is located the tangent plane direction of the terminal surface department of air outlet (5) and the contained angle that becomes between the terminal surface of air outlet (5) is beta to 90 ≦ beta ≦ 150.

10. The spiral casing of claim 9 wherein:

when comprising the guide wall (21) and the volute tongue (22): the guide vanes are 4, the 4 guide vanes (4) are sequentially arranged along the direction from the guide wall (21) to the volute tongue (22), an included angle formed between the tangential direction of the guide vane (4) at the end face of the air outlet (5) and the end face of the air outlet (5) from the direction from the guide wall (21) to the volute tongue (22) is beta 1, beta 2, beta 3 and beta 4, 120 degrees is less than or equal to beta 1 and 150 degrees, 120 degrees is less than or equal to beta 2 and 130 degrees, 110 degrees is less than or equal to beta 3 and 120 degrees, and 90 degrees is less than or equal to beta 4 and 110 degrees.

11. An air conditioning indoor unit, characterized in that: the spiral casing of any of claims 1 to 10, further comprising a centrifugal fan blade (1), the centrifugal fan blade (1) being arranged in the spiral casing (2).

12. An indoor unit of an air conditioner according to claim 11, wherein:

the centrifugal fan blades (1) are more than two, the volutes (2) are more than two, and the centrifugal fan blades (1) and the volutes (2) are arranged in a one-to-one correspondence manner; and/or the presence of a gas in the gas,

the air outlet (5) of the volute (2) is air-out towards the horizontal direction, the volute (2) further comprises an air inlet (23), and the air inlet (23) of the volute is located on the upper end face and/or the lower end face of the volute (2) to supply air from the upper side and/or supply air from the lower side.

13. An indoor unit of an air conditioner according to any one of claims 11 to 12, wherein:

the heat exchanger (6) comprises a first heat exchanger (61) and a second heat exchanger (62), the first heat exchanger (61) is arranged above the volute (2), and the second heat exchanger (62) is arranged below the volute (2).

14. An air conditioner, characterized in that: an indoor unit of an air conditioner comprising any one of claims 11 to 13.

Images