CN204063280U - Air conditioner - Google Patents

Abstract

The utility model relates to a kind of air conditioner, the length in the rotation direction (AX) of cross flow fan (8) is longer than the length direction length of blow-off outlet (3), and cross flow fan (8) has: the extension (8a) extended from the two ends of blow-off outlet (3) along rotation direction (AX); With impact walls (18), it is arranged in air conditioner main body, and for the blowout airflow collision blown out from the fan extension (8a) of cross flow fan (8).And, about the length in the rotation direction (AX) of the opposite face (18a) of impact walls (18), the length being configured to the opposite face (LU19b) of rear guide portion side end (19b) is shorter than the length (LU19a) of the opposite face of stabilizer side end (19a).

Description

Air conditioner

Technical field

The utility model relates to air conditioner, especially relates to the indoor set of the split type air conditioner with indoor set and off-premises station.

Background technology

The indoor set of air conditioner is arranged on (indoor of house, office building etc.) within doors of carrying out air conditioning, the room air utilizing heat exchanger to make to suck from suction inlet carries out heat exchange with the cold-producing medium circulated kind of refrigeration cycle, if heat running, then heat this room air, if cooling operation, then cool this room air, by blow-off outlet again to indoor air-supply, for this reason, blowing fan and heat exchanger are accommodated in indoor set body interior.

There is various ways in the indoor set of air conditioner, be known in the elongated ceiling that is wall-hanging, the blowout of direction of blow-off outlet embedded etc., known use cross flow fan (also referred to as cross-flow fan, axial-flow fan, cross streams fan) is as blowing fan.Relative to the suction inlet of the indoor set from air conditioner to the air stream of blow-off outlet, be configured with heat exchanger at the upstream side of cross flow fan, namely between suction inlet and cross flow fan, be configured with heat exchanger, blow-off outlet is positioned at the downstream of cross flow fan.The length of the length direction of the blow-off outlet of indoor set is roughly the same with the total length of the length direction (rotation direction) of cross flow fan, outside the length direction at the both ends of cross flow fan, separate regulation and be configured with the support of rotating shaft of supporting cross flow fan and drive motors etc. spatially.

Cross flow fan (hereinafter referred to as fan) to be attached at by multiple impeller monomer on the flat board of the ring-type (circular) with external diameter and internal diameter and support plate along rotation direction and to form, and described impeller monomer is that to make to bend to cross section be that multiple wings of roughly arc-shaped tilt with predetermined angular and with concentric annular fixedly.On rotation direction, on the vane nose of the impeller monomer of an end, be fixed with the discoideus fan end plate installed by the rotating shaft of the bearing portion of indoor set main body supporting, the impeller monomer of another end is different from the support plate of other parts, is provided with the fan end plate that central authorities have the band projection of the lug boss for installing the electric machine rotational axis securing drive motors.Drive motors carries out rotary actuation, and thus, fan rotates around the center of rotating shaft and rotation.The mode that the wing is positioned at direction of rotation front with its outer circumferential side front end tilts.

Below, for convenience of explanation, the impeller monomer be connected along rotation direction is called the section (Even of fan).In addition, the impeller monomer at the both ends that rotation direction is positioned at fan is called end segments.

With the rotation of fan, room air is inhaled into the indoor set main body of air conditioner from suction inlet, during by heat exchanger, becomes as described above by thermoregulator adjustment air, after crossing fan, is blown from fan along direction of rotation.Then, flow with broadening gradually being formed in the blowout wind path between the stabilizer of front face side and the rear guide portion of rear side, and be blown to indoor from the blow-off outlet of the bottom being formed at indoor set main body.

For the air-flow crossing fan, when fan rotates, form multiple wings of fan by the inhalation area of upstream side and the blowout region in downstream.Be known in the configuration aspects of such cross flow fan, relative to the blow-off direction of the air-flow of fan, what be configured in front face side produces eddy current near the stabilizer splitting inhalation area and blowout region.

In the inside of indoor set, due to act on air at the room air be inhaled into by frictional resistance during heat exchanger (pressure loss) and when aforesaid fan rotates in the inner eddy generation of fan, therefore the air pressure of the inside of indoor set becomes and forces down than air.On the other hand, fan makes air-flow accelerate and provides overcome atmospheric energy and blow out from blow-off outlet.But when from fan to air-flow, supply does not overcome atmospheric sufficient energy, the air pressure near the blow-off outlet in indoor set becomes and forces down than air.In addition, even if provide sufficient energy, air-flow equably in blow-off outlet flowing, in the end of wind path, can not make air turbulence by the friction between wall, there is air-flow towards blow-off outlet irregularity ground situation about flowing.In these cases, the inside produced from blow-off outlet to indoor set sucks the phenomenon of room air, and this phenomenon is called suck-back.

In the roughly OBL blow-off outlet extended in left-right direction, near the both ends of left and right directions and the upside of above-below direction easily there is suck-back.Its reason is as described below.

The both ends in the rotation direction of fan are configured with: the fan end plate (support plate) forming rotary body and impeller monomer; The sidewall of the side of wind path is relatively formed in the outside of this fan end plate and fan end plate.Be separated with the distance of about 5mm between this fan end plate and sidewall, prevent both contacts and produce spin friction.But, be formed in the outside being spatially located at the both ends in the rotation direction of fan between fan end plate and the sidewall relative with this fan end plate, because air-flow becomes the pressure atmosphere forced down than air by pressure loss during heat exchanger.Thus, easily there is suck-back in the pressure differential between the atmospheric pressure thinking because of the outside of indoor set near the both ends of blow-off outlet.In addition, the upside of blow-off outlet is connected stabilizer, because of the eddy current occurred near aforesaid stabilizer, becomes minimal pressure, and the difference between atmospheric pressure becomes maximum, thus easily suck-back occurs in the downside be connected with rear guide portion.

When there is suck-back, the sinuous flow of the air-flow that reason adverse current produces, overall as fan, air quantity reduces, and causes the reduction of fan performance, thus causes the increase of noise.And when cooling operation, if there is suck-back, then the low temperature wall of the room air and indoor set inside that enter the high humility of indoor set inside because of suck-back contacts and condenses, then its dew becomes water droplet and disperse to indoor (become and fly to reveal).In addition, the improper phenomenon repeatedly carrying out blowing out, sucking also can occur, noise increases.

Especially, such as because of dust accretions make flowing resistance become large at suction inlet etc. time, be difficult to provide sufficient energy to air from fan, easily suck-back occur.

Namely part as above-mentioned easy generation suck-back realizes the structure of the raising of the flow performance at the both ends in the rotation direction of fan, there is following situation, namely, sidewall shape is made to change (for example, referring to patent document 1) with the ventilation path in the rotation direction of the ventilation path fan of the blowing portion in framework from the diminishing mode of the blowing portion of fan.In addition, also there is following situation, that is, at the both ends in the rotation direction of fan, arrange in the mode covering the blowing portion near sucting and prevent adverse current plate, and then realize the minimizing (for example, referring to patent document 2) of flowing resistance as the shape of chamfering.

Prior art document

Patent document

Patent document 1: Japanese Unexamined Patent Publication 8-121395 publication (0013 ~ 0023 hurdle, Fig. 1)

Patent document 2: Japanese Unexamined Patent Publication 2001-201078 publication (0030 ~ 0035 hurdle, Fig. 2)

Utility model content

The technical problem that utility model will solve

With regard to the situation making sidewall shape change from the diminishing mode of the blowing portion of fan with the ventilation path in the rotation direction of the ventilation path fan of the blowing portion in framework, by reducing ventilation path, prevent significant stall, and, prevent from, from sidewall, significant stripping occurs, form smooth-going flow field.But, in order to there is not the spin friction between fan end and sidewall, the gap between the sidewall of the fan of rotation and the indoor set main body of fixed part and air conditioner can not be made to be zero.Thus, there is following problem, that is, prevent room air by the ventilation path that reduces from blow-off outlet and the suck-back flowing into the inside of indoor set is difficult.In addition, about being become the part of minimal pressure and the upside of blow-off outlet by eddy current, also without any consideration.

In addition, at the both ends in the rotation direction of fan, arrange in the mode covering the blowing portion near sucting and prevent adverse current plate, and, realize in the shape as chamfering in the structure of the minimizing of flowing resistance, be also provided with chamfered section in the stabilizer side being become low pressure by eddy current.Thus, prevent from expanding the amount corresponding to chamfering between adverse current plate and fan, there is room air and be easily inhaled into the such problem in the inside of indoor set from blow-off outlet.

The utility model is made for solving above-mentioned problem, its objective is and a kind of air conditioner is provided, at the both ends of the length direction of blow-off outlet, especially in the stabilizer side of the part and blow-off outlet that are become minimal pressure by eddy current, can suck-back be prevented, and low-power and low noise can be realized.

The feature of air conditioner of the present utility model is to have: indoor set main body, heat exchanger and cross flow fan, described indoor set main body have room air is sucked suction inlet, by the blowout wind path of the described air sucked from described suction inlet to the blow-off outlet of indoor blowout and described blow-off outlet that the described air sucked from described suction inlet is led, described heat exchanger, in described indoor set main body, carries out heat exchange with the described air sucked from described suction inlet, described cross flow fan is in described indoor set main body, described air is carried to described blow-off outlet from described suction inlet, when observing from the front of described indoor set main body, be made up of stabilizer before described blowout wind path, described stabilizer to be led by described cross flow fan described blow-off outlet by the described air of blowing, the back side of described blowout wind path is made up of rear guide part, described rear guide part to be led by described cross flow fan described blow-off outlet by the described air of blowing, when observing from the front of described indoor set main body, the end of the left and right of described blowout wind path is provided with impact walls, this impact walls is arranged to connect described stabilizer and described rear guide part, and there is the opposite face relative with the end of the left and right of described cross flow fan, the length that described opposite face is configured to the rotation direction of the described cross flow fan of the rear guiding side end being positioned at described rear guiding side is shorter than the length in described rotation direction of the stabilizer side end being positioned at described stabilizer side.

The effect of utility model

According to the utility model, near the both ends of blow-off outlet, make the blowout air-flow from the end segments of cross flow fan collide with impact walls and produce hold up higher than atmospheric pressure, thus prevent the outside of room air machine indoor from entering the such suck-back in the inside of indoor set by blow-off outlet.And, for the air-flow near the stabilizer of eddy generation, hold up higher than atmospheric pressure is formed so that the width of suck-back (length in rotation direction) can be prevented fully, for from eddy current away from air-flow, hold up with the narrow width formation that holds up the air-flow near comparison eddy generation, the increase of the energy loss caused by impact walls can be suppressed thus, and low-power and low noise can be realized.

Accompanying drawing explanation

Fig. 1 is the stereoscopic figure of the indoor set of the air conditioner representing the cross flow fan having carried embodiment 1 of the present utility model.

Fig. 2 is the longitudinal section of the Q-Q line along Fig. 1 of embodiment 1.

Fig. 3 is the synoptic diagram of the cross flow fan representing embodiment 1, and Fig. 3 (a) is the side view of cross flow fan, and Fig. 3 (b) is the sectional view of the U-U line along Fig. 3 (a).

Fig. 4 is the stereogram (Fig. 4 (a)) represented enlargedly by the fan fixing 5 impeller monomers in rotation direction of embodiment 1 and the key diagram (Fig. 4 (b)) representing support plate.

Fig. 5 is the stereogram observing the indoor set of the air conditioner of embodiment 1 from oblique below.

Fig. 6 is stereogram (Fig. 6 (a)) and the top view (Fig. 6 (b)) of the impact walls representing embodiment 1.

Fig. 7 is the key diagram of the impact walls representing embodiment 1.

Fig. 8 is the key diagram of the cross sectional shape of the impact walls representing embodiment 1.

Fig. 9 is the sectional view of the W-W line along Fig. 5 representing embodiment 1.

The position that Figure 10 is embodiment 1, transverse axis represents depth direction AY, the longitudinal axis represent the line chart of the length of the rotation direction AX of the opposite face of impact walls.

Figure 11 is the key diagram of the air-flow represented in the indoor set main body produced by cross flow fan of embodiment 1.

Figure 12 is the line chart of the wind speed representing the air-flow blown out from the fan of embodiment 1, and transverse axis represents the position of depth direction AY, and the longitudinal axis represents wind speed.

Figure 13 is the schematic diagram of the internal structure of the indoor set represented simplifiedly in the stabilizer side end of embodiment 1.

Key diagram near the impact walls of the right part that Figure 14 sees when being the observation Figure 13 representing embodiment 1 enlargedly.

Figure 15 be embodiment 1 with the sectional view of the rotation vertically fan center side end Hb of the position 20a of cutting indoor set.

Figure 16 is the key diagram near the impact walls of the right part of the indoor set represented enlargedly in the rear guide portion side end of embodiment 1.

Figure 17 is the stereogram of other structure example of the impact walls representing embodiment 1.

Figure 18 be embodiment 1 with the sectional view of the rotation vertically fan center side end Hb of the position 20a of cutting indoor set.

The position that Figure 19 is embodiment 1, transverse axis represents depth direction AY, the longitudinal axis represent the line chart of the length of the rotation direction AX of the opposite face of impact walls.

Figure 20 is the sectional view of the impact walls 18 representing embodiment 1.

Figure 21 is the stereogram of the impact walls representing embodiment 2 of the present utility model enlargedly.

Figure 22 is the key diagram of the cross sectional shape of the impact walls representing embodiment 2.

Figure 23 is top view (Figure 23 (a)) and the sectional view (Figure 23 (b)) of the impact walls representing embodiment 2.

Figure 24 is the line chart of the ratio of the opposite face relative to depth direction AY (length (LD) of length (the LU)/bottom surface of opposite face) of the impact walls representing embodiment 2.

Figure 25 is the key diagram of the cross sectional shape of the impact walls representing embodiment 3 of the present utility model.

Figure 26 is the top view of the impact walls representing embodiment 3.

Figure 27 is the line chart of the ratio of the opposite face relative to depth direction AY (length (LD) of length (the LU)/bottom surface of opposite face) of the impact walls representing embodiment 3.

Figure 28 is the top view of the impact walls representing embodiment 3.

Figure 29 is the key diagram of the cross sectional shape of the impact walls representing embodiment 3.

Figure 30 is the key diagram of the angle of inclined plane for illustration of the impact walls in the position 20a of embodiment 4 of the present utility model.

Figure 31 is the key diagram of the angle of inclined plane for illustration of the impact walls in the rear guide portion side end of embodiment 4.

Figure 32 is the line chart of inclined plane relative to the angle θ of the position of depth direction AY of the impact walls representing embodiment 4.

Detailed description of the invention

Embodiment 1

Below, based on accompanying drawing, embodiment 1 of the present utility model is described.The longitudinal section of Fig. 1 to be the stereoscopic figure of the indoor set 1 of the air conditioner representing the cross flow fan 8 having carried embodiment 1, Fig. 2 be Q-Q line along Fig. 1.Represent the flowing of air in FIG with blank arrowhead, represent the flowing of air in fig. 2 with dotted arrow.In fact air conditioner forms kind of refrigeration cycle by indoor set and off-premises station, but is the structure about indoor set here, and eliminates the structure relevant with off-premises station.As shown in Figures 1 and 2, the indoor set (hereinafter referred to as indoor set) 1 of air conditioner is the elongated roughly rectangular shape extended at left and right directions when observing from front, and is arranged on the wall in room.At the top 1a of indoor set 1 main body, arrange become the suction inlet of air in suction chamber suction grid 2, dust carried out to the electrostatic (electric dust) precipitator 5 of electrostatic precipitation, dust carried out to the cancellous filter 6 of dedusting.And the heat exchanger 7 that pipe arrangement 7b runs through the structure of multiple aluminum fin-stock 7a arranged side by side is configured in face side and the upper side of cross flow fan 8 in the mode of surrounding fan 8.In addition, before indoor set 1 main body, 1b is covered by front panel, the bottom of indoor set 1 main body is provided with blow-off outlet 3, is blown in the heat exchanger 7 by the room air of heat exchange from blow-off outlet 3 to indoor.Blow-off outlet 3 is made up of the opening slenderly extended as length direction by the left and right directions of indoor set 1 main body.That is, blow-off outlet 3 is set in the mode that the length direction of blow-off outlet 3 is consistent with the left and right directions of indoor set 1 main body.Blowing fan and cross flow fan 8 are to be arranged between heat exchanger 7 and blow-off outlet 3, by motor 16(with reference to Fig. 3 by the left and right directions (length direction) of indoor set 1 main body as the mode in rotation direction) rotary actuation carry room air to blow-off outlet 3 from suction inlet 2.In the inside of indoor set 1 main body, there is stabilizer 9 and the rear guide portion 10 of isolating inhalation area E1 and blowout region E2 relative to fan 8.Stabilizer 9 is formed the front face side of the blowout wind path 11 of the room air guiding blow-off outlet 3 blown out from cross flow fan 8, and rear guide portion 10 is such as vortex shapes, and forms the rear side of blowout wind path 11.This side of guide portion 10 is mild curved surface more rearward compared with the stabilizer 9 of front face side, and blowout wind path 11 is the shapes broadened gradually towards blow-off outlet 3.Upper and lower wind direction blade 4a, left and right wind direction blade 4b are installed on blow-off outlet 3 freely to rotate, and the direction to indoor air-supply is changed.In the drawings, O represents the pivot of fan 8, and E1 is the inhalation area of fan 8, and E2 is the blowout region being positioned at the opposition side of inhalation area E1 relative to pivot O.The upstream-side-end 10a of the tongue 9a of stabilizer 9 and the air stream of rear guide portion 10 is utilized to isolate inhalation area E1 and the blowout region E2 of fan 8.In addition, RO represents the direction of rotation of fan 8.

Fig. 3 is the synoptic diagram of the cross flow fan 8 representing embodiment 1, and Fig. 3 (a) is the side view of cross flow fan, and Fig. 3 (b) is the sectional view of the U-U line along Fig. 3 (a).The latter half of Fig. 3 (b) represents the state of the multiple wings observing subtend, and the first half represents 1 wing 13.Fig. 4 (a) represents the stereogram fixing the fan 8 of 5 impeller monomers 14 at rotation direction AX enlargedly, and Fig. 4 (b) is the key diagram representing support plate 12.In the diagram, motor 16, motor shaft 16a the part of impeller being represented as cross flow fan 8 is eliminated.The quantity of the quantity of the impeller monomer 14 of formation fan 8, the wing 13 of formation 1 impeller monomer 14 can be several, but is not limited to this number.

As shown in Figure 3, Figure 4, cross flow fan 8 is at rotation direction AX(length direction) there are multiple such as 5 impeller monomers 14.Be configured with the support plate 12 of ring-type in one end of impeller monomer 14, the multiple wings 13 extended at rotation direction AX are configured along the periphery of support plate 12.Such as possess multiple impeller monomer 14 thermoplastic resin formed by AS resin, ABS resin etc. along rotation direction AX, by ultrasonic bonding etc., the front end of the wing 13 and the support plate 12 being adjacent to the impeller monomer 14 configured are linked.And do not arrange the wing 13 on the fan end plate 12b being positioned at the other end, fan end plate 12b is circular plate shape.Be positioned at the support plate 12a(of one end of rotation direction AX hereinafter referred to as fan end plate) center be provided with fan shaft 15a, the center of the fan end plate 12b being positioned at the other end is provided with fan hub 15b.And the motor shaft 16a of fan hub 15b and motor 16 is fixed by screw etc.That is, fan end plate 12a, 12b of being positioned at the two ends of the rotation direction AX of fan 8 are circular plate shape, and the middle body residing for rotation 17 is formed with fan shaft 15a and fan hub 15b.The middle body residing for rotation 17 becoming pivot of the support plate 12 except two ends is the ring-types in space, as shown in Figure 4 (b), has internal diameter K1 and external diameter K2.Here, in Fig. 3 (b), Fig. 4 (b), little by little line is the imaginary rotation linking motor shaft 16a and fan shaft 15a and represent pivot O, and here as rotation 17, the bearing of trend of rotation 17 is rotation direction AX.In addition, by 1 impeller monomer section of being called 14, the section at the both ends being positioned at rotation direction AX is called end segments 14a.

Fig. 5 is the stereogram observing indoor set 1 main body of the air conditioner of present embodiment from oblique below.In the figure, for ease of understanding, eliminating upper and lower wind direction blade 4a and left and right wind direction blade 4b, being observed a part for fan 8 by blow-off outlet 3.Compared with the length L1 of the length direction of the blow-off outlet 3 of indoor set, the length L2 of the rotation direction AX of fan 8 is formed (L2>L1) longlyer.This blow-off outlet 3 is with its length direction mode opening consistent with the left and right directions of indoor set 1 main body.And a part of the end segments 14a of two sides of fan 8 extends from the two ends of blow-off outlet 3 respectively, and two end segments 14a of this extension and fan 8 are not called fan extension 8a towards the part of blow-off outlet 3.And, the impact walls 18 that the blowout air-flow blown out from fan extension 8a collides is arranged in indoor set 1 main body relative with fan extension 8a.In addition, sidewall 30 and fan end plate 12a, 12b are arranged on and the both ends of fan 8 divide out the position of predetermined distance with fan end plate 12a, 12b with extending substantially in parallel, form the two sides of suction inlet 2 to the left and right of the wind path of blow-off outlet 3 of the inside of machine 1 indoor.

At fan 8 along the part of rotation direction AX except the fan extension 8a at two ends, the i.e. middle body of the rotation direction AX of fan 8, as shown in Figure 2, it is following structure, namely, the rear side of blowout wind path 11 forms until blow-off outlet 3 by rear guide portion 10, becomes swirl shape from side, the most upstream 10a of rear guide portion 10 to blow-off outlet 3, and becomes large gradually from the distance of the outer thoughtful rear guide portion 10 of the impeller of fan 8.The front face side of blowout wind path 11 is made up of stabilizer 9.By the rotation of fan 8, be accelerated in the front face side of fan 8 and the air-flow that is blown flows in blowout wind path 11 with describing curve, and be forwardly blown side from blow-off outlet 3.

Fig. 6 ~ Fig. 9 is the figure of the shape for illustration of the impact walls 18 on the both ends of machine 1 disposed in the interior, Fig. 6 represents the impact walls 18 on the both ends being separately positioned on indoor set 1 body interior, the stereogram (Fig. 6 (a)) of the impact walls 18 on the one end being arranged on right side seen when representing and observe Fig. 5 enlargedly and top view (Fig. 6 (b)).Fig. 7 is the key diagram representing impact walls 18, Fig. 8 (a) and (b) are vertically to comprise the sectional view during plane cutting impact walls 18 of rotation 17 with the face of the fan end plate 12b of end segments 14a, Fig. 8 (a) represents the cross section being configured in the stabilizer side end 19a of stabilizer 9 side, and Fig. 8 (b) represents the cross section being configured in the rear guide portion side end 19b of rear guide portion 10 side.In addition, Fig. 9 is the sectional view of the W-W line along Fig. 5, represents the longitudinal section vertical with the rotation 17 of indoor set 1 comprising the part of impact walls 18 near fan end plate 12b.In fig .9, in the cross section of fan extension 8a, rear guide portion 10, stabilizer 9 and impact walls 18 constitute wall for the air-flow blown out from fan extension 8a, and represent with oblique line.

In the cross section shown in Fig. 8, the opposite face 18a of impact walls 18 be with fan extension 8a substantially in parallel faced by face, the air-flow blown out from fan extension 8a and opposite face 18a collide.In fan extension 8a, the back side of blowout wind path 11 is made up of until in way the upstream side of rear guide portion 10, but as shown in Figure 9, from the rear guide portion side end 19b(in way below illustrate) relative with the opposite face 18a of impact walls 18, not such with blow-off outlet 3 opening is connected, and is connected with stabilizer 9.Here, on the depth direction AY of indoor set 1 main body, this side residing for blow-off outlet 3 is called front face side, this side residing for rear guide portion 10 is called rear side, on the opposite face 18a relative with fan extension 8a of impact walls 18, using the front face side that is connected with stabilizer 9 as stabilizer side end 19a, using the rear side that is connected with rear guide portion 10 as rear guide portion side end 19b.Namely, impact walls 18 is arranged in the mode connecting the stabilizer side end 19a being configured in stabilizer 9 side and the rear guide portion side end 19b being configured in rear guide portion 10 side with surrounding the periphery of fan extension 8a, and has the opposite face 18a collided from the room air of fan extension 8a blowout.And, from the distance (distance of the radial direction of fan 8) of the opposite face 18a of the outer thoughtful impact walls 18 of the impeller of fan 8 as shown in the Reference numeral ア Fig. 9 from side, the most upstream 10a of rear guide portion 10 via impact walls 18(from rear guide portion side end 19b to stabilizer side end 19a) to roughly the same with the part that stabilizer 9 is connected.In addition, the collision area collided from blowout air-flow and the impact walls 18 of fan extension 8a blowout is represented with region E3.That is, will represent that the blowout region E2(blowing out the region of air-flow from fan 8 is with reference to Fig. 2) the air-flow blown out from fan extension 8a and impact walls 18 region of colliding as collision area E3.This collision area E3 becomes a part of blowout region E2.

In figure 6, dotted line represents fan 8 and fan end plate 12b, and in the figure 7, dotted line represents fan end plate 12b.As shown in Figure 6, Figure 7, the shape of impact walls 18 is configured in the length of rotation direction AX, and the length of the opposite face 18a in rear guide portion side end 19b is shorter than the length of the opposite face 18a in stabilizer side end 19a.Be arranged on left and right both ends on impact walls 18 be connected with sidewall 30 to such as be shaped integratedly with the sidewall 30 of left and right, and using sidewall 30 as one end in the lateral direction inner side extension.Therefore, in the top view (Fig. 6 (b)) of opposite face 18a representing impact walls 18, be roughly trapezoidal shape.Here, in opposite face 18a, the edge in outside will be positioned at as edge Ha outside fan on the left and right directions of indoor set 1 main body, on the contrary using the edge that is positioned at inner side on the left and right directions of indoor set 1 main body as edge Hb inside fan.As shown in Figure 6 (b), after to be trapezoidal opposite face 18a during top view be upper base, guide portion side end 19b and the stabilizer side end 19a that goes to the bottom is mutually almost parallel, outside a limit and fan, edge Ha is the connecting portion of sidewall 30 and impact walls 18, and with rear guide portion side end 19b(upper base) and stabilizer side end 19a(go to the bottom) generally perpendicularly crossing.In addition, inside another limit and fan, edge Hb tilts to make the length of the rotation direction AX of stabilizer side end 19a longer than the length of the rotation direction AX of rear guide portion side end 19b.Stabilizer side end 19a and reduce starting position 19c(and illustrating below about details) between the length of rotation direction AX of opposite face 18a identical.

In addition, structurally, also there is sidewall 30 in concavo-convex situation on the AX of rotation direction, thus the length of the rotation direction AX of the rear guide portion side end 19b of the length of the rotation direction AX of the stabilizer side end 19a of above-mentioned opposite face 18a and opposite face 18a refer to relative to fan extension 8a with rotation 17 substantially in parallel faced by the length from fan end plate 12a, 12b of opposite face 18a.Namely, as shown in Fig. 8 (a) and (b), the length (Nb) of the rotation direction AX of the opposite face 18a from fan end plate 12b of guide portion side end 19b after length (Na) > of the rotation direction AX of the opposite face 18a from fan end plate 12b of stabilizer side end 19a.

In addition, as mentioned above, in the rear guide portion side end 19b of impact walls 18, owing to being smoothly connected with rear guide portion 10, so in fact, the height that impact walls 18 erects from rear guide portion 10 in most end becomes zero.Here, in order to easy understand, rear guide portion side end 19b is near the most end that impact walls 18 is connected with rear guide portion 10, and the distance becoming opposite face 18a and bottom surface 18b has the position of the size of certain degree.

As shown in Figure 7, with fan end plate 12b vertically to comprise the plane cutting impact walls 18 of rotation 17 time cross section (cross section on the plane C2 at the cross section on the plane C1 in such as stabilizer side end 19a, 20a place, position) in, as shown in Figure 8, the cross sectional shape of impact walls 18 is polygon, here in quadrangle.Four limits of quadrangle are the parts in face of inner side of opposite face 18a, bottom surface 18b, impact walls side 18c, sidewall 30.Opposite face 18a is a face of impact walls 18, with rotation 17 abreast towards the fan extension 8a of end segments 14a.Bottom surface 18b is in the face relative with opposite face 18a with the opposition side of fan extension 8a, and with form the rear guide portion 10 blowing out the rear side of wind path 11 and be connected.Impact walls side 18c, towards the inner side of the left and right directions of indoor set 1 main body, is the face connecting opposite face 18a and bottom surface 18b, and in the face of blowout wind path 11.Above-mentioned Nb<Na refers in the quadrangle on the cross section of the position of depth direction AY, and about the length on a limit of expression opposite face 18a, the length of rear guide portion side end 19b is shorter than the length of stabilizer side end 19a.

In addition, the height of impact walls 18, namely, the distance of opposite face 18a and bottom surface 18b, because the distance (distance of the radial direction of fan 8) between the periphery of fan 8 and rear guide portion 10 becomes greatly, gradually so the distance in stabilizer side end 19a becomes larger than the distance in rear guide portion side end 19b.

The length of the rotation direction AX of the opposite face 18a towards end segments 14a of impact walls 18 is configured to smoothly change on the depth direction AY of impact walls 18 as shown in the curve I1 of Figure 10.Figure 10 is the line chart that transverse axis represents the position of depth direction AY, the longitudinal axis represents the length of the rotation direction AX of the opposite face 18a of impact walls 18.As shown in curve I1, the length of the rotation direction AX of the opposite face 18a of impact walls 18 becomes following length, namely, the length (Na) of stabilizer side end 19a is maximum, the length (Nb) of rear guide portion side end 19b is minimum, position 20a, 20b of depth direction AY on the way, smoothly link the length of Na and Nb with roughly straight line.In this structure example, the interval (in Fig. 10 from stabilizer side end 19a to the interval of reducing starting position 19c) from stabilizer side end 19a to about 10% of the length of the entirety of depth direction is identical with the length of the rotation direction AX of opposite face 18a.Namely, on depth direction AY, position between the stabilizer side end 19a and rear guide portion side end 19b of impact walls 18 is provided with reduces starting position 19c, about the length of the rotation direction AX of opposite face 18a, make from stabilizer side end 19a to the length identical (=Na) reducing starting position 19c, from minimizing starting position 19c towards rear guide portion side end 19b, the length of the rotation direction AX of opposite face 18a is smoothly reduced.Here, reduce the minimizing starting the length of the rotation direction AX meaned in opposite face 18a to start, reducing starting position 19c is arranged in the way between stabilizer side end 19a and rear guide portion side end 19b, the starting position of stabilizer side when shortening the length of the rotation direction AX of opposite face 18a.

Below, an example of each length of the fan that present embodiment uses is shown.

The end being located at impeller monomer 14 is fixed on the external diameter K2(of the support plate 12 of the ring-type on the wing 13 with reference to Fig. 4) be that Φ 110mm, internal diameter K1(are with reference to Fig. 4) be Φ 60mm, be circumferentially fixed with such as 35 wings 13 at this support plate 12.In addition, on the AX of rotation direction, the length direction length L1=610mm of blow-off outlet 3, the total length L2=640mm of the rotation direction AX of fan 8.About impact walls 18, in stabilizer side end 19a, the length Na of the rotation direction AX of the opposite face 18a of the impact walls 18 from fan end plate 12a, 12b is 15mm, in rear guide portion side end 19b, the length Nb of the rotation direction AX of the opposite face 18a of the impact walls 18 from fan end plate 12a, 12b is 5mm.In addition, the S in Fig. 8 represents the space formed between fan end plate 12a, the 12b at the two ends of fan 8 and sidewall 30.The length of the rotation direction AX of space S is such as 10mm.And about the length of the rotation direction AX of end segments 14a, end segments 14a is at one end 25mm, is 70mm at the end segments 14a of the other end, the rotation direction AX length of other the section 14 except 2 end segments 14a is roughly 80mm.In addition, the distance ア between the surface of the outer thoughtful impact walls 18 from impeller in fan extension 8a is about 5mm.In addition, the length (from stabilizer side end 19a to the length along curved surface of rear guide portion side end 19b) of the depth direction AY of the opposite face 18a of impact walls 18 is 200mm, makes the length of the part that the length of stabilizer side is identical (from stabilizer side end 19a to the length along curved surface reducing starting position 19c) be 20mm.

Figure 11 is the key diagram of the air-flow represented in indoor set 1 main body of cross flow fan 8.In the inside of cross flow fan 8, what adjoint air-flow occurred near stabilizer 9 passes through produced eddy current (circulation eddy current) F1.Namely region E4 is at indoor set 1 internal gas pressure minimum (Pmin) in the surrounding of eddy current F1, maximum with the difference of atmospheric pressure (P0).Thus, more easily there is suck-back in stabilizer side (Ga) this side of the blow-off outlet 3 blown out by the air-flow of eddy current F1 periphery compared with rear guide portion side (Gb).

In addition, from fan 8 blow out air-flow wind speed as shown in figure 12.The transverse axis of Figure 12 represents that the position of depth direction AY, the longitudinal axis represent the wind speed of blowout air-flow.In the drawings, J1, J2 represent the wind speed of air-flow J1, the J2 shown in Figure 11.According to the shape of wind path and the characteristic of cross flow fan 8, in blowout wind path 11, the wind speed of the air-flow of flowing is little in stabilizer side, guide portion side after trend, wind speed becomes large, maximum near the central authorities of stabilizer side and rear guide portion side, guide portion side after trend further, wind speed diminishes.When wind speed distributes like this, do not provide energy to air-flow entirety equably by fan 8.Especially, in stabilizer side, the wind speed of air-flow is low, and energy is insufficient.And room air flows into suck-back in indoor set 1 stabilizer side (Ga) is easier than rear guide portion side (Gb) by blow-off outlet 3 to be caused.

Below, based on Figure 13, Figure 14, to the stabilizer side (Ga) that suck-back easily occurs, the effect of the impact walls 18 namely near stabilizer side end 19a is described.Figure 13 is the schematic diagram of the internal structure of the indoor set 1 represented simplifiedly in stabilizer side end 19a, along airflow direction (dotted arrow), represents the relation of suction inlet 2, heat exchanger 7, fan 8, blow-off outlet 3 simplifiedly.In addition, Figure 14 is the key diagram near the impact walls 18 of the right part represented enlargedly when observing Figure 13.

On the AX of rotation direction, the both ends section 14a of fan 8 has the fan extension 8a extended from the both ends of the length direction of blow-off outlet 3, relative with the opposite face 18a of impact walls 18 in blowout side.The blowout region E2 relative with this impact walls 18 is called collision area E3.On the other hand, on the rotation direction AX of fan 8, except the part except fan extension 8a, namely the middle body of the rotation direction AX of fan 8 relatively configures with the blow-off outlet 3 be made up of opening in blowout region E2.Here, the position of two fan end plate 12a, 12b is the export-oriented face in the outside towards indoor set 1 main body of such as fan end plate 12a, 12b and the position of fan end face.

Air conditioner operates, and by motor 16, fan 8 is rotated.Cross flow fan 8 rotates to RO direction (with reference to Fig. 2), thus, is inhaled at the suction inlet 2 of room air from the top being arranged at indoor set 1 main body, during by heat exchanger 7, carries out heat exchange with the cold-producing medium flowed in pipe arrangement 7b.And the air-flow A become by air conditioning, is blown to indoor from blow-off outlet 3 by cross flow fan 8.Here, when the room air be inhaled into from suction inlet 2 is by heat exchanger 7, frictional resistance (pressure loss) occurs, thus as shown in figure 14, the air pressure Pe1 of inhalation area E1 during inflow cross flow fan 8 becomes lower than atmospheric pressure P0.Space S is and inhalation area E1 continuous print space, owing to being identical pressure atmosphere, so be the air pressure Pe1(< atmospheric pressure P0 equal with inhalation area E1).In addition, when being conceived to the blowout side of end segments 14a, the air-flow Aa blown out to the place relative with impact walls 18 contacts with impact walls 18, and the energy of wind speed is converted into the energy of pressure, produces and hold up P1a in collision area E3.Along with the rotation of fan 8 accelerates, the wind speed Va of air-flow Aa becomes large, holds up P1a and uprises.If wind speed Va is more than setting, then holds up P1a and become higher than atmospheric pressure P0.This holds up P1a and becomes more different according to the pressure loss of carried heat exchanger etc. than wind speed Va during atmospheric pressure P0 height.

Be mounted on cross flow fan 8 on the indoor set 1 of air conditioner according to such as weak refrigeration, force the operation mode such as cold to set the rotating speed of running.Wind speed during by operating with minimum speed, to obtain the mode that hold up P1a higher than atmospheric pressure P0, the length Na of the rotation direction AX of the opposite face 18a in the interval ア (with reference to Fig. 9) between decision impact walls 18 and the periphery of the fan 8 and stabilizer side end 19a of impact walls 18.The size determined in this wise if having is to arrange the stabilizer side end 19a of impact walls 18, then in the running of indoor set 1, namely when the rotation of fan 8, can using the collision area E3 of the end segments 14a of fan 8 as holding up P1a(> atmospheric pressure P0) space.Hold up P1a> atmospheric pressure P0 by making the collision area E3 be communicated with space S become, and mineralization pressure is poor, holds up the inflow that P1a cuts off the room air of atmospheric pressure P0.Thereby, it is possible to the suck-back preventing room air from being flowed into by the space S that the pressure of blow-off outlet 3 inside externally to indoor set 1 of machine 1 is indoor low is occurred.Especially, easily occurring in the stabilizer side end 19a of suck-back, producing between fan 8 and impact walls 18 and larger than atmospheric pressure P0 hold up P1a, prevent suck-back thus.

But the collision stream towards impact walls 18 can not become towards the air-supply air-flow outside indoor set 1, thus make to hold up P1a and increase compared with atmospheric pressure P0 superfluously, consider to become loss from the object of air-supply.Namely, from stabilizer side end 19a to rear guide portion side end 19b on depth direction AY, be provided with the impact walls 18 of the opposite face 18a on the AX of rotation direction with same widths and blowout air-flow and impact walls 18 are collided, flowing resistance is increased, thus for fan 8, load becomes large, causes the increase of energy loss, noise.

Thus, in embodiment 1, consider the balance preventing suck-back and air-supply, in the shape of the rear guide portion side end 19b of impact walls 18, make the length (width of left and right directions) of the rotation direction AX towards the face of fan 8 and opposite face 18a shorter than stabilizer side end 19a.And, from stabilizer side end 19a towards rear guide portion side end 19b, smoothly make impact walls 18 reduce with the length of the rotation direction AX from fan end plate 12b of the opposite face 18a of fan.

Here, such as, on depth direction AY, the air-flow at the 20a place, position reduced between starting position 19c and rear guide portion side end 19b is described.Figure 15 is the longitudinal section representing indoor set 1, represents the cross section vertical with rotation 17 through the fan medial end Hb of position 20a.In the same manner as Fig. 9, in this section, a part for rear guide portion 10, stabilizer 9 and impact walls 18 constitutes wall for air-flow, represents with oblique line.Be formed with impact walls 18 closer to the part of stabilizer side end 19a compared with the 20a of position, blow out wind path 11 being formed with closer to the part of rear guide portion side end 19b compared with the 20a of position.Thus, from flowing to the air-flow be blown between position 20a and rear guide portion side end 19b to blowout wind path 11 and becoming towards the air-supply air-flow outside indoor set 1 on depth direction AY the air-flow that the fan extension 8a of fan 8 blows out.On the other hand, depth direction AY collides to the air-flow blown out between position 20a and stabilizer side end 19a and impact walls 18 and formed hold up, prevent suck-back.

In the above description, although be illustrated the air-flow at 20a place, position, but on the AX of rotation direction, when observing from fan end plate 12a, 12b side at both ends, the cross section shown in Fig. 9 is become in fan end plate 12a, 12b side, depth direction AY all collides with impact walls 18 to the air-flow blown out between stabilizer side end 19a and rear guide portion side end 19b and formed and holds up, prevent suck-back.Along with the cross section vertical with rotation 17 from fan end plate 12a, 12b tend to inner side position, from rear this side of guide portion side end 19b, form blowout wind path 11, become towards the air-supply air-flow indoor set 1 from a part for the blowout air-flow of fan extension 8a blowout.And, through the fan medial end Hb of the stabilizer side end 19a of impact walls 18, the blowout wind path 11 same with Figure 11 with the section constitution that rotation 17 is vertical, more not forming impact walls 18 by the inner side of rotation direction AX than it, all becomes air-supply air-flow.

Below, the effect of the impact walls 18 near rear guide portion side end 19b is described.Figure 16 is the key diagram near the impact walls 18 of the right part represented enlargedly in rear guide portion side end 19b.About the impact walls 18 of rear guide portion side end 19b, the length Nb of the opposite face 18a of rotation direction AX is shorter than the length Na of stabilizer side end 19a, and the width towards the opposite face 18a of end segments 14a is narrow.Thus, as shown in figure 16, the length of the rotation direction AX of the high-voltage section P1b caused by airflow collision narrows, but due to away from circulation eddy current F1, become the place being difficult to suck-back compared with stabilizer 9 side, so for suck-back, obtain sufficient effect with this degree.Here, owing to reducing the width of the opposite face 18a of impact walls 18, so near rear guide portion 10, the air-flow Aaa from the air-flow A that fan 8 blows out and the opposite face 18a of impact walls 18 collides, and produces and holds up P1b.On the other hand, the air-flow Aab flowed to the inside in the lateral direction do not collide with impact walls 18 by blowing out wind path 11 and blow-off outlet 3 blows out outside indoor set 1.Like this, in the portion, by making the length of the opposite face 18a of impact walls 18 shorter than stabilizer side end 19a, air-flow of blowing can be guaranteed.

Namely, in the position from stabilizer side end 19a to the depth direction AY of rear guiding side end 19b, be formed with the impact walls 18 with the opposite face 18a that can obtain the length (length of rotation direction AX) held up prevented needed for suck-back in this position.When being formed like this, the length (length of rotation direction AX) of the opposite face 18a of stabilizer side end 19a is the longest, and the length (length of rotation direction AX) towards rear guiding side end 19b, required opposite face 18a shortens.In the part that this shortens, the air-flow blown out from fan 8 does not collide with impact walls 18, flows to blow-off outlet 3 as air-supply air-flow.

Therefore, be identically formed from stabilizer side end 19a to whole positions of rear guiding side end 19b opposite face 18a rotation direction AX length impact walls 18 compared with, concerning identical rotation speed of the fan, air quantity increase, can power consumption be reduced.And, the noise that the collision with air-flow produces can also be reduced.

As mentioned above, wind speed during by operating with minimum speed, stably to obtain length Na, the minimizing starting position 19c that the mode that hold up P1a higher than atmospheric pressure P0 determines the rotation direction AX of the opposite face 18a in the stabilizer side end 19a of impact walls 18 near the both ends of blow-off outlet 3.And the length Nb of the rotation direction AX of the opposite face 18a in rear guide portion side end 19b sets in the width of the scope of Na>Nb >=0.

Above, in embodiment 1, have: suction inlet 2, be arranged at the top of air conditioner 1 main body, and suck room air; Heat exchanger 7, carries out heat exchange with the room air sucked from this suction inlet 2; Blow-off outlet 3, is arranged at while the left and right directions of air conditioner 1 main body extends along its length the bottom of air conditioner 1 main body, has carried out the room air of heat exchange to indoor blowout by by heat exchanger 7; Cross flow fan 8, the mode of the left and right directions of air conditioner 1 main body as rotation direction AX to be arranged between heat exchanger 7 and blow-off outlet 3, sends room air from suction inlet 2 to blow-off outlet 3; Fan extension 8a, is in the both ends of cross flow fan 8 respectively, and cross flow fan 8 extends from the two ends of the length direction of blow-off outlet 3 to rotation direction AX; Stabilizer 9, forms the front face side of the blowout wind path 11 of the room air guiding blow-off outlet 3 blown out from cross flow fan 8; Rear guide portion 10, forms the rear side of blowout wind path 11; Impact walls 18, is separately positioned on the both ends of air conditioner 1 main body in the mode of stable connection device 9 and rear guide portion 10, for the room air collision blown out from fan extension 8a; With opposite face 18a, be a face of impact walls 18, towards fan extension 8a.The length that opposite face 18a is configured to the rotation direction AX of the rear guide portion side end 19b being positioned at rear guide portion 9 side is shorter than the length of rotation direction AX of the stabilizer side end 19a being positioned at stabilizer 9 side, thus, near the both ends of blow-off outlet 3, the blowout air-flow from the end segments 14a of fan 8 is made to collide with impact walls 18 and produce hold up higher than atmospheric pressure, thus the both ends of left and right directions at blow-off outlet 3, can prevent the outside of room air machine 1 indoor from being entered the suck-back of the inside of indoor set 1 by blow-off outlet 3.Thereby, it is possible to prevent because there is suck-back and the increase of the reduction of the fan performance that produces, noise, fly dew etc.And, concerning the air-flow near the stabilizer 9 of eddy generation F1, holding up of the width prevented needed for suck-back (length of rotation direction AX) is formed in collision area E3, concerning from eddy current F1 away from air-flow, with compared with holding up the air-flow near eddy generation F1, formed with narrower width and hold up, can suck-back be prevented thus, and the increase of being collided the energy loss caused by blowout air-flow and impact walls 18 can be suppressed, and low-power and low noise can be realized.

In addition, in the rotation direction AX length of the opposite face 18a of impact walls 18, the consistent length from stabilizer side end 19a to minimizing starting position 19c is Na.Thus, concerning the air-flow near the stabilizer 9 of eddy generation F1, be formed in holding up P1 and can be formed with the sufficient width (being the length of rotation direction AX) and the length of depth direction AY that can cut off the inflow of the room air caused by suck-back in the collision area E3 be communicated with space S here.Therefore, it is possible to reliably prevent suck-back from occurring in the stabilizer side that suck-back easily occurs.This minimizing starting position 19c adopts the position of about 10% of the length of the depth direction of impact walls 18 from stabilizer side end 19a, but is not limited thereto.As shown in figure 11, adopt the position linking the pivot O of the fan 8 and straight line Z of rear guide portion 10 side of blow-off outlet 3 and Gb and intersect with the opposite face 18a of impact walls 18, represent with minimizing starting position 19c in fig. 11, but preferably adopt compared with this position closer to the position of rear guide portion side end 19b.This is because, from stabilizer side end 19a to minimizing starting position 19c, close to the region E4 becoming low pressure because of eddy current F1, easily cause suck-back.

Above, starting position 19c is reduced in the starting position of stabilizer 9 side when impact walls 18 is the length in the way between stabilizer side end 19a and rear guide portion side end 19b with the rotation direction AX shortening opposite face 18a, about the length of the rotation direction AX of opposite face 18a, identical to the length reducing starting position 19c by making from stabilizer side end 19a, from easily causing the stabilizer side end 19a of suck-back to minimizing starting position 19c, formed compared with other parts of impact walls 18 rotation direction AX the holding up of width more fully, thus reliably can prevent suck-back.

In addition, Figure 17 is the stereogram of the structure example of other the shape representing impact walls 18.In the impact walls 18 shown in Fig. 7, in each position from stabilizer side end 19a to the depth direction AY of rear guide portion side end 19b, with vertical with fan end plate 12b and when comprising the plane cutting impact walls 18 of rotation 17 cross section be in polygon, such as quadrangle shape.Impact walls 18 shown in Figure 18 is in each position from stabilizer side end 19a to the depth direction AY of rear guide portion side end 19b, is in polygon-shaped, such as such in quadrangle shape with the cross section during plane cutting impact walls 18 vertical and vertical with fan end plate 12b.Thus, through the fan medial end Hb of position 20a and the cross section vertical with rotation 17 as shown in figure 18.When for this shape, the length that the length of the rotation direction AX of the opposite face 18a of the impact walls 18 in rear guide portion side end 19b is configured the rotation direction AX of the opposite face 18a than the impact walls 18 in stabilizer side end 19a is short.Thus, in stabilizer side end 19a, can hold up can prevent the sufficient width of suck-back from being formed on the AX of rotation direction, especially because hold up easily causing the both ends of the fan of suck-back and can be formed at stabilizer side (Ga), thus room air can be prevented by the both ends of the left and right directions of blow-off outlet 3 and near stabilizer 9 namely blow-off outlet 3 upside and flow into the inside of indoor set 1.

And, when Figure 15 and Figure 18 in the cross section vertical with rotation 17 at 20a place, position is compared, on straight line (Figure 15) at coupling position 20a and pivot O and the plumb line (Figure 18) through position 20a, the air-flow flowed to blowout wind path 11 is different.That is, in each position of upstream side compared with stabilizer side end 19a, the air-flow flowed to blowout wind path 11 becomes more than the space D shown in Figure 18.Thus, in the structure of Figure 18, air quantity can be made more than the structure of Figure 15, can low-power and low noise be realized.

Figure 19 is relevant with the shape of the impact walls 18 of embodiment 1, is the line chart of the length of the rotation direction AX of the opposite face 18a representing impact walls 18 and fan 8.Transverse axis represents the position of depth direction AY, and the longitudinal axis represents the length of the rotation direction AX of opposite face 18a.Here, the length of the rotation direction AX of opposite face 18a refers to the length from fan end plate 12a, 12b of fan 8.In the length of the rotation direction AX of the opposite face 18a of impact walls 18, in the position of upstream side compared with stabilizer side end 19a, may not be linearity as shown in Figure 10 to the change of rear guide portion side end 19b, also can be the curve-like of stepped, concave, convex, wavy etc.Even if changing in this wise with the curve I3 of the curve I2 of stepped change, mild convex in such as Figure 19, also can play same effect.

Figure 20 is the sectional view of the impact walls 18 representing embodiment 1, represents the impact walls 18 being such as configured in the end on the right side of blow-off outlet 3.The impact walls 18 being configured at the end in left side when observing blow-off outlet 3 is also same, overturns about the impact walls on the right side of this.In addition, this cross section also can be with vertical with fan end plate 12b and comprise the plane cutting of rotation 17 time cross section, also can be with the cross section during plane cutting vertical and vertical with fan end plate 12b.The left side of impact walls side 18c blows out wind path 11 with blow-off outlet 3 continuous print, thus impact walls side 18c forms the side of blowout wind path 11.So far the impact walls 18 illustrated is following shape as Suo Shi Figure 20 (a), namely, make the length of the rotation direction AX of the opposite face 18a of impact walls and bottom surface 18b become roughly the same length, connect opposite face 18a and become θ=90 ° with the impact walls side 18c of bottom surface 18b relative to opposite face 18a.Here, angle θ be from the opposite face 18a of impact walls along clockwise direction (being counterclockwise the end in the left side of blow-off outlet 3) until impact walls side 18c angulation.

As other structure example of impact walls 18, as shown in Figure 20 (b), the length of the opposite face 18a of rotation direction AX is formed shortlyer than bottom surface 18b, and impact walls side 18c and opposite face 18a angulation θ also can become obtuse angle (>90 °).In Figure 20 (a), disorderly and easily produce eddy current F2 near the 18c of impact walls side in this bight as Suo Shi Figure 20 (d) with the air-flow of the corner impact of opposite face 18a and impact walls side 18c in the air-flow flowed with colliding with opposite face 18a.In Figure 20 (b), angle θ (>90 °) becomes obtuse angle, gently tilts and flow to impact walls side 18c with the air-flow of the corner impact of opposite face 18a and impact walls side 18c, thus is difficult to produce eddy current F2 in this part.Like this, by suppressing stripping, disorder, energy loss, noise can be reduced, and low-power and low noise can be realized.

In addition, as shown in Figure 20 (c), the length of the opposite face 18a of rotation direction AX also can be longer than bottom surface 18b form, impact walls side 18c and bottom surface 18b angulation θ becomes acute angle (<90 °).In the structure shown here, in the same manner as Figure 20 (a), near the 18c of impact walls side, easily produce the structure of eddy current F2, but compared with Figure 20 (a) and (b), the length of the rotation direction AX of blowout wind path 11 can be made longer.Thereby, it is possible to increase the air quantity determined by wind speed X wind path area.In addition, in other words, compared with Figure 20 (a) and (b), the length of the rotation direction AX of opposite face 18a can be increased.Thus, be the structure of the width that can increase the rotation direction AX held up be formed on opposite face 18a.

Even the shape of the arbitrary impact walls 18 of Figure 20 (a) ~ (c), also can be formed between opposite face 18a and fan 8 and hold up, thus can prevent the room air of the outside of indoor set 1 from being invaded the suck-back of the space S (with reference to Figure 14, Figure 16) at the both ends of fan 8 by blow-off outlet 3.

In addition, on the depth direction AY of impact walls 18, be not limited to any 1 structure of Figure 20 (a) and (b), (c) from the cross sectional shape of the impact walls 18 stabilizer side end 19a to rear guide portion side end 19b, also can form in combination.Such as, also can near stabilizer side end 19a, as Figure 20 (a), Figure 20 (c) to increase opposite face 18a or to expand the mode blowing out wind path 11, at 20a, 20b place, position of depth direction AY, adopt the shape of Figure 20 (a), Figure 20 (b), in the position close to rear guide portion side end 19b, because the length of the rotation direction AX of opposite face 18a is short, so adopt Figure 20 (b).

In addition, from stabilizer side end 19a to rear guide portion side end 19b, from middle body to rear guide portion side end 19b, as shown in figure 12, large than stabilizer side end 19a from the wind speed of the air-flow of fan 8 blowout.In the part that wind speed is large, bight becomes obtuse angle and prevents eddy current F2 as Suo Shi Figure 20 (b), and can reduce the energy loss, the noise that are caused by eddy current F2, be effective.

Embodiment 2

Below, based on accompanying drawing, embodiment 2 of the present utility model is described.In the present embodiment, it is characterized in that, the cross sectional shape of impact walls 18 is polygon, substantially adopts quadrangle, become the shape having reamed the bight formed with opposite face 18a and the impact walls side 18c of fan 8 by impact walls 18 with straight line or curve, there is the shape of so-called chamfered section.Cross section now also can be by vertical with fan end plate 12a, 12b and comprise the plane cutting of rotation 17 time cross section, also can be by the cross section during plane cutting vertical and vertical with fan end plate 12a, 12b.In each figure of embodiment 2, the Reference numeral identical with embodiment 1 represents identical or suitable with it part.

Figure 21 is the stereogram of the impact walls 18 representing embodiment 2 of the present utility model enlargedly, is the impact walls 18 of the end on the right side being such as configured at indoor set 1 main body.In the drawings, dotted line represents fan end plate 12b.The both ends of indoor set 1 main body are arranged at respectively and the impact walls 18 had towards the opposite face 18a of fan 8 surrounds the shape of the periphery of the fan extension 8a of blowout region E2 from stabilizer side end 19a throughout rear guide portion side end 19b as illustrated in fig. 9 in the mode of stable connection device 9 and rear guide portion 10.The end in the left side of the blow-off outlet 3 extended along left and right at length direction is configured with same impact walls 18, but becomes the shape of left and right upset.

In embodiment 2, it is characterized in that, cut away the bight of edge Hb inside the fan of the opposite face 18a of fan 8 and be made inclined plane, becoming inclined plane 21.Here, such as do not form inclined plane 21 from stabilizer side end 19a to minimizing starting position 19c, in rear guide portion side end 19b, be formed with the inclined plane 21 of the such shape in the angle of cutting away edge Hb inside fan significantly.The face surrounded by little by little ruling shown in position 19b, 20a, 20b represents with the cross section during plane cutting impact walls 18 vertical with fan end plate 12b.

Figure 22 represents the key diagram with the cross sectional shape during plane cutting impact walls 18 vertical with fan end plate 12b, and Figure 22 (a) is stabilizer side end 19a(or reduces starting position 19c), the cross section of Figure 22 (b) to be position 20a, Figure 22 (c) be rear guide portion side end 19b.In addition, Figure 23 is top view (Figure 23 (a)) and the sectional view (Figure 23 (b)) of the impact walls 18 representing embodiment 2.Figure 23 (b) represents the cross section along the W20a-W20a line of Figure 23 (a).

As mentioned above, about the height of impact walls 18, namely the distance between opposite face 18a and bottom surface 18b, because the distance (distance of the radial direction of fan 8) between the periphery of fan 8 and rear guide portion 10 becomes large gradually, so be positioned at the stabilizer side end 19a in downstream relative to air-flow, becoming than large at the rear guide portion side end 19b being positioned at upstream.

In the same manner as embodiment 1, impact walls 18 be connected to one end be formed blowout wind path 11 sidewall 30 on and form, but when representing the length LU of length LD, the opposite face 18a of bottom surface 18b of impact walls 18 of rotation direction AX and upper surface, be fan end plate 12a when impact walls 18 of left end with fan end plate 12b() the length from export-oriented face represent.In addition, about the length of the rotation direction AX of opposite face 18a, the length being positioned at the rear guide portion side end 19b of rear guide portion 10 side is shorter than the length of the stabilizer side end 19a being positioned at stabilizer 9 side.And, using the starting position of stabilizer side time length (LU) of the rotating shaft direction AX of shortening opposite face 18a as minimizing starting position 19c, from stabilizer side end 19a to minimizing starting position 19c, make the length of opposite face 18a (LU) identical.Therefore, the opposite face 18a towards fan 8 of impact walls 18 in the same manner as embodiment 1, the length (LU19b) from fan end plate 12b of the rotation direction AX after length (LU19a) > from fan end plate 12b of the rotation direction AX in stabilizer side end 19a in guide portion side end 19b.And, stabilizer side end 19a(or reduce starting position 19c) and rear guide portion side end 19b between position 20a, as the length between them, become LU19a>LU20a>LU19b.

In addition, in this structure example, identical from the length (LD) of the fan end plate 12b to impact walls side 18c of the bottom surface 18b of impact walls 18 throughout rear guide portion side end 19b from stabilizer side end 19a.That is, stabilizer side end 19a(or reduce starting position 19c) in rotation direction AX length (the LD19a)=position 20a from the bottom surface 18b fan end plate 12b to impact walls side 18c rotation direction AX the length (LD20a) from the bottom surface 18b fan end plate 12b to impact walls side 18c=rear guide portion side end 19b rotation direction AX the impact walls side 18c from fan end plate 12b to bottom surface 18b length (LD19b).

In addition, opposite face length (LU)/sole length (LD) is called opposite face ratio (LU/LD), for depth direction AY position opposite face ratio (LU/LD), at rear guide portion side end 19b than little at stabilizer side end 19a, and formed in the mode meeting following formula (1).

LU19a/LD19a（=1）

>LU20a/LD20a

>LU19b/LD19b……（1）

Figure 24 is the opposite face 18a about impact walls 18 and the bottom surface 18b of embodiment 2, represents the line chart of the opposite face length (LU) from the fan end plate 12b/sole length (LD) of rotation direction AX.Transverse axis represents the position of depth direction AY.Meet the mode of formula (1) with the opposite face ratio (LU/LD) the position for this depth direction AY, from minimizing starting position 19c to rear guide portion side end 19b, inside fan, edge Hb is provided with inclined plane 21.The angle θ between inclined plane 21 is deasil made to become obtuse angle from opposite face 18a.In addition, from stabilizer side end 19a to minimizing starting position 19c, make the length (LU) of the length (LD) of the rotation direction AX of bottom surface 18b and the rotation direction AX of opposite face 18a identical, LD19a=LD19c=LU19a=LU19c.

From in minimizing starting position 19c to rear guide portion side end 19b, opposite face ratio (LU/LD) one such as lower described in.

At stabilizer side end 19a, reduce starting position 19c, being LU19a/LD19a=LU19c/LD19c=1, at position 20a, is LU20a/LD20a=0.8, at rear guide portion side end 19b, is LU19b/LD19b=0.6.And in the scope of the length difference of opposite face 18a and bottom surface 18b, in the inner side of left and right directions (rotation direction AX), the face be connected on opposite face 18a is made up of inclined plane 21.

As shown in Figure 22, Figure 23, on the AX of rotation direction, in the length LU from fan end plate 12b of opposite face 18a, the longest at the length LU19a of stabilizer side end 19a, the shortest at the length LU19b of rear guide portion side end 19b.Thus, in the same manner as embodiment 1, in stabilizer side end 19a, at the collision area E3(of impact walls 18 with reference to Figure 16) in form hold up larger than atmospheric pressure with sufficient width, cut off room air to region S adverse current, can suck-back be prevented thus.Especially, owing to not forming inclined plane 21 from stabilizer side end 19a to minimizing starting position 19c, so easily causing near the stabilizer 9 of suck-back, whole of the opposite face 18a of length LU19a is being formed and is holding up, reliably can prevent suck-back.

In addition, as shown in Figure 22 (b) shows, position 20a between stabilizer side end 19a and rear guide portion side end 19b, 20% of the such as inner side of the blowout air-flow blown out from the fan extension 8a of end segments 14a blows out to inclined plane 21, is directed to blow-off outlet 3 smoothly and becomes air-supply air-flow along inclined plane 21.And 80% of the fan end plate 12b side of the blowout air-flow blown out from the fan extension 8a of end segments 14a to be collided with impact walls 18 and formation for holding up.

And, as shown in Figure 22 (c), from the circulation eddy current F1 of fan inside away from rear guide portion side end 19b in, form along the wide inclined plane 21 of rotation direction AX, thus, 60% of the such as inner side of the blowout air-flow blown out from the fan extension 8a of end segments 14a blows out to inclined plane 21, is directed to blow-off outlet 3 smoothly and becomes air-supply air-flow.And, 40% of fan end plate 12b side from the blowout air-flow that the fan extension 8a of end segments 14a blows out is collided with opposite face 18a and is formed in collision area E3 and hold up, become in the collision area E3 be communicated with space S and hold up P1> atmospheric pressure P0, mineralization pressure is poor thus, holds up the inflow that P1 cuts off the room air of atmospheric pressure P0.Thereby, it is possible to the suck-back preventing room air from flowing into the low space S of the pressure of inside of indoor set 1 such by the outside of blow-off outlet 3 machine 1 indoor occurs.

In addition, the clockwise angle θ from opposite face 18a of inclined plane 21 is 110 ° ~ 160 °.This angle is not limited to this scope, as long as air-flow can smoothly along the angle that inclined plane 2 flows.

Like this, in stabilizer 9 side (Ga: with reference to Figure 15, Figure 18) easily causing suck-back, the opposite face 18a of impact walls 18 is made to rise to along the length needed for rotation direction AX cut-out suck-back fully, formed with required width (length of rotation direction AX) on the AX of rotation direction thus and hold up, room air entering and preventing suck-back from blow-off outlet can be cut off.And, be difficult to rear guide portion 10 side (Gb: with reference to Figure 15, Figure 18) causing suck-back, shorter than stabilizer 9 side (Ga) by the length of the rotation direction AX making opposite face 18a, thus, the part of blowout air-flow blown out from fan extension 8a flows to blow-off outlet 3 and becomes air-supply air-flow.With when the length of the rotation direction AX by opposite face 18a is compared with adopt the structure of the length LU19a identical with stabilizer side end 19a from stabilizer side end 19a to rear guide portion side end 19b, if form inclined plane 21 as illustrated in fig. 22, then for identical rotation speed of the fan, air quantity can increase, can power consumption be reduced, and can realize energy-conservation.And, because the whole blowout air-flow blown out from fan extension 8a does not collide with opposite face 18a, so the noise produced with the collision of air-flow can be reduced.

In addition, by the face be connected with the inner side of the opposite face 18a towards fan 8 is made inclined plane 21, even if contact from a part for the air of fan extension 8a blowout with impact walls 18, this air also flows along inclined plane 21, is not formed and smoothly flow to blow-off outlet 3 with peeling off as Suo Shi Figure 20 (d).Thereby, it is possible to reduction noise, reduce the flowing resistance of air, thus can prevent wind speed (air quantity) from reducing, can low-power be realized.

In addition, about from stabilizer side end 19a to the opposite face 18a reducing starting position 19c, also inside fan, inclined plane 21 can be set edge Hb.This part is the part close to stabilizer 9, easily cause suck-back, hold up so preferably formed with sufficient width (length of rotation direction AX), but the inclined plane 21 gently tilted of close such as 180 ° of opposite face 18a and inclined plane 21 angulation θ also can be set.By arranging inclined plane 21, the generation of the such disorder of Figure 20 (d) can be reduced.

In addition, in embodiment 2, as shown in figure 22, the length LD of the rotation direction AX of the bottom surface 18b of impact walls 18 is identical to rear guide portion side end 19b from stabilizer side end 19a.That is, the length of the left and right directions of the blowout wind path 11 that the blowout air-flow blown out from fan 8 passes through is until blow-off outlet 3 is all roughly the same.Thus, the pressure loss, disorder are also few, can obtain stable blowout air-flow.In the position that the length of the rotation direction AX of opposite face 18a is short, such as, at position 20a, 19b, be also bottom surface stable structure.In addition, in rear guide portion side end 19b, the length LU19b from fan end plate 12b of the rotation direction AX of opposite face 18a can also be that zero ground is formed.Like this, can there is no opposite face 18a causing in the low part of the possibility of suck-back yet, from the fan extension 8a of end segments 14a using whole blowout air-flows as air-supply air-flow.Thus, with form the situation of opposite face 18a in rear guide portion side end 19b compared with, air quantity can be made to increase, and can power consumption be reduced.

In addition, in fig. 24, from minimizing starting position 19c to rear guide portion side end 19b, opposite face ratio (LU/LD) is diminishingly changed, but is not limited thereto.Such as, also can change stepwise.In addition, the inclined plane 21 in key diagram is planes, but is not limited to plane, also can adopt the inner side at left and right directions, namely at the curved surface that blowout wind path 11 side is protruded.

Above, in embodiment 2, also in the same manner as embodiment 1, about the length (LU) of the rotation direction AX of the opposite face 18a of impact walls 18, the length (LU19b) being configured to the rotation direction AX of the rear guide portion side end 19b being positioned at rear guide portion 10 side is shorter than the length (LU19a) of rotation direction AX of the stabilizer side end 19a being positioned at stabilizer 9 side, thus, near the both ends of blow-off outlet 3, the blowout air-flow from the end segments 14a of fan 8 is made to collide with impact walls 18 and be made hold up higher than atmospheric pressure, thus in the both ends of the left and right directions of blow-off outlet 3, can prevent the outside of room air machine 1 indoor from entering the such suck-back in the inside of indoor set 1 by blow-off outlet 3.Thereby, it is possible to prevent the reduction of fan performance because suck-back produces, noise increase, fly dew etc.And, for the air-flow near the stabilizer 9 of eddy generation F1, holding up of the width prevented needed for suck-back (length of rotation direction AX) is formed in collision area E3, for from eddy current F1 away from air-flow, formed hold up with the narrow width that holds up be compared to the air-flow near eddy generation F1, can suck-back be prevented thus, and the increase of being collided the energy loss caused by blowout air-flow and impact walls 18 can be suppressed, and low-power and low noise can be realized.

And, with the fan end plate 12a with the circular plate shape be arranged on the two ends of cross flow fan 7, in cross section during the vertical plane cutting impact walls 18 of 12b, impact walls 18 is in polygon, and there is opposite face 18a, at the bottom surface 18b relative with opposite face 18a with the opposition side of fan extension 8a, the impact walls side 18c of opposite face 18a and bottom surface 18b is linked in the inner side of left and right directions, if on the AX of rotation direction from fan end plate 12a, the length of the opposite face 18a that 12b starts is LU, and on the AX of rotation direction from fan end plate 12a, when the length of the bottom surface 18b that 12b starts is LD, about the opposite face ratio obtained by LU/LD, the opposite face ratio (LU19b/LD19b) of rear guide portion side end 19b is less than the opposite face ratio (LU19a/LD19a(=1) of stabilizer side end 19a), thus can suck-back be prevented, and air-flow of blowing can be guaranteed, particularly by the blow-off outlet 3 that air-flow smoothly led by inclined plane 21, the energy loss caused by airflow collision can be reduced thus and realize low-power, and, there is the effect that can reduce with the collision sound of impact walls 18.

In addition, with in the cross section during plane cutting impact walls 18 vertical with fan end plate 12a, the 12b of circular plate shape at the two ends being arranged at cross flow fan 8, formed with the inclined plane that obtuse angle is crossing by with opposite face 18a with the face that opposite face 18a connects in the inner side of left and right directions, thus, compared with the situation adopting the bight of vertically intersecting with edge Hb inside the fan of impact walls 18, can suppress to peel off at adjacent corner, disorderly, and there is the effect that can realize low-power and low noise.

Embodiment 3

In embodiment 3, also about the length of the rotation direction AX of the opposite face 18a of impact walls 18, make structure that rear guide portion side end 19b is shorter than stabilizer side end 19a and embodiment 1,2 identical.In embodiment 1, in the shape of impact walls 18, make opposite face 18a identical with the length of bottom surface 18b, the situation connecting the impact walls side 18c of opposite face 18a and bottom surface 18b and opposite face 18a angulation θ=90 ° is illustrated.In addition, in embodiment 2, throughout rear guide portion side end 19b, the length (LD) from fan end plate 12b of bottom surface 18b is adopted the length identical with stabilizer side end 19a from stabilizer side end 19a, for the difference of the length of opposite face 18a and the length of bottom surface 18b, inside fan, edge Hb arranges inclined plane 21 and defines the air-flow smoothly flowed.In embodiment 3, make the length from fan end plate 12b of bottom surface 18b on depth direction AY from stabilizer side end 19a(or reduce starting position 19c) change to rear guide portion side end 19b.Here, the length of bottom surface 18b adopts the length different from the length of the opposite face 18a of this position.But, at stabilizer side end 19a(or minimizing starting position 19c), the length from fan end plate 12b of bottom surface 18b is the longest, the shortest in the length from fan end plate 12b of rear guide portion side end 19b, bottom surface 18b.

Figure 25 represents the key diagram with the cross sectional shape during plane cutting impact walls 18 vertical with fan end plate 12b, and Figure 25 (a) is stabilizer side end 19a and reduces the cross section that to be position 20a, Figure 25 (c) be in rear guide portion side end 19b, starting position 19c, Figure 25 (b).In addition, Figure 26 is the top view of the impact walls 18 representing embodiment 3.As shown in the figure, from stabilizer side end 19a throughout rear guide portion side end 19b ground, the length (LD) from fan end plate 12b to impact walls side 18c of the bottom surface 18b of impact walls 18 is alternatively formed, at least stabilizer side end 19a and reduce 19c place, starting position length (LD19a) > after length (LD19b) in guide portion side end 19b.The opposite face 18a towards fan 8 of impact walls 18 in the same manner as embodiment 1, the length (LU19b) from fan end plate 12b of the rotation direction AX after length (LU19a) > from fan end plate 12b of the rotation direction AX in stabilizer side end 19a in guide portion side end 19b.

And in the structure shown here, the length (LU) of opposite face 18a is constant relative to the opposite face ratio (LU/LD) of the length (LD) of bottom surface 18b.Therefore, about the opposite face ratio (LU/LD) of the position of impact walls 18, the relation of formula (2) is met.

LU19a/LD19a（=1）

=LU19c/LD19c

>LU20a/LD20a

=LU19b/LD19b……（2）

In addition, Figure 27 represents an example of the structure meeting formula (2), the longitudinal axis represents the opposite face ratio (LU/LD) of the length of opposite face 18a relative to the length of the bottom surface 18b of impact walls 18, is the line chart of the opposite face length (LU) from the fan end plate 12b/sole length (LD) representing rotation direction AX.Transverse axis represents depth direction AY.To meet the mode of this opposite face ratio (LU/LD), set from stabilizer 9 side to the length of opposite face 18a of the position of the depth direction AY of rear guide portion 10 side and the length of bottom surface 18b.And in the scope of the difference of the length of opposite face 18a and the length of bottom surface 18b, the face be connected the inner side of the rotation direction AX with opposite face 18a is as inclined plane 21.Such as, inclined plane 21 is arranged on edge Hb inside the fan of minimizing starting position 19c to rear guide portion side end 19b.This inclined plane 21 adopts with opposite face 18a with crossing face, the obtuse angle of θ >90 °.In this structure example, be provided with the position of inclined plane 21, making opposite face more constant than LU/LD, such as opposite face compares LU/LD=0.8.From stabilizer side end 19a to minimizing starting position 19c, LU/LD=1, from minimizing starting position 19c to rear guide portion side end 19b, LU/LD=0.8 is constant.But, in shaping, from reducing the opposite face that becomes regulation the 19c of starting position at once than being difficult.Be formed at reduce starting position 19c fan inside boundary between the bight of edge Hb and inclined plane 21 be on depth direction AY after the length of degree of guide portion 10 side be necessary, preferably naturally gently formed.

As shown in figure 11, easily suck-back is caused in the part of the circulation eddy current F1 close to fan inside.In embodiment 3, it is characterized in that, from circulation eddy current F1 away from rear guide portion side end 19b, make the length (LD19b) of the rotation direction AX of bottom surface 18b shorter than the length (LD19a) of stabilizer side end 19a.Such as, when respectively Figure 22 (b) of embodiment 2, (c) and Figure 25 (b), (c) being compared, in Figure 25 (b), (c), the air-flow of the partial-flow that the length of the bottom surface 18b to impact walls 18 from the blowout air-flow that the fan extension 8a of end segments 14a blows out is shorter than the structure of Figure 22 (b), (c) does not collide with impact walls 18, and by the inner side of impact walls side 18c by the blow-off outlet 3 that smoothly leads.That is, the length blowing out the rotation direction AX of the blowout wind path 11 of region E2 increases the amount corresponding with the length of the rotation direction AX shortening bottom surface 18b.Thereby, it is possible to make flowing resistance less than the structure of Figure 22, and air quantity can be increased.When the identical situation of input is compared, can air quantity be increased, when comparing with same air quantity, input can be reduced, thus reduce power consumption, can be energy-conservation.In addition, because the air-flow collided with impact walls 18 tails off, so can also reduce to collide sound.

Here, the length of the rotation direction AX of the bottom surface 18b of impact walls 18 is described.When the length of this bottom surface 18b is long, the length of the rotation direction AX of blowout wind path 11 shortens, and the air quantity of blowout air-flow is reduced.On the other hand, when the length of bottom surface 18b is too short, make the length of the rotation direction AX of blowout wind path 11 rise to more than necessity, the speed of blowout air-flow reduces, and can not obtain the wind speed of abundant speed at blow-off outlet 3.When blow-off outlet 3 can not obtain sufficient wind speed, still have room air can the outside of machine 1 main body indoor by the possibility of blow-off outlet 3 to blowout region E2 adverse current.By impact walls 18, hold up higher than atmospheric pressure is formed on opposite face 18a, can prevent the room air of adverse current from entering space S, even if but again flow out to indoor set 1 from blow-off outlet 3 to the room air of blowout region E2 adverse current because holding up, also can not cause loss.Thus, the length of the rotation direction AX of the bottom surface 18b in the stabilizer side end 19a of impact walls 18 is determined, the wind speed not causing the degree of suck-back at blow-off outlet 3 can be obtained under the wind speed when operating with minimum speed.If arrange the stabilizer side end 19a of impact walls 18 like this, then, in the running of indoor set 1, namely when the rotation of fan 8, sufficient wind speed can be obtained at blow-off outlet 3.That is, easily occurring in the stabilizer side end 19a of suck-back, formed between fan 8 and impact walls 18 and larger than atmospheric pressure P0 hold up P1a, and blow out the air-flow of abundant wind speed near the 18c of impact walls side, reliably can prevent suck-back thus.

In embodiment 3, inside the fan from minimizing starting position 19c to rear guide portion side end 19b, edge Hb is provided with inclined plane 21.By this inclined plane 21, eddy current F2(that the air-flow to bight flowing becomes reason can be suppressed with reference to Figure 20 (d)) generation, and can flowing resistance be reduced.

In addition, make the opposite face ratio (LD20a/LD20a) at 20a place, position identical with the opposite face ratio (LU19b/LD19b) in rear guide portion side end 19b, LU20a/LD20a=LU19b/LD19b is constant, but is not limited thereto.As long as make the opposite face ratio (LU19b/LD19b) of rear guide portion side end 19b be less than the opposite face ratio (LU19a/LD19a) of stabilizer side end 19a.One such as shown in Figure 28 of the structure of LU19a/LD19a>LU19b/LD19b.Figure 28 is the top view of the impact walls 18 representing embodiment 3, such as, and the opposite face ratio (LU19a/LD19a)=1 of stabilizer side end 19a, the opposite face ratio (LU19b/LD19b)=0.25 of rear guide portion side end 19b.About the length (LU) of opposite face relative to the opposite face ratio of the length (LD) of bottom surface, compare in rear guide portion 10 side and form in stabilizer 9 side littlely, if compare with the length of same bottom surface, then compared with during LU19a/LD19a=LU19b/LD19b, the length of opposite face 18a can be shortened in rear guide portion 10 side.Be difficult to the rear guide portion side end 19b causing suck-back, the ratio of the air-flow collided to the ratio of air-flow and the opposite face 18a of impact walls 18 that blowout wind path 11 flows by inclined plane 21 can be made many, can reduce further thus and collide from the air-flow of fan 8 blowout and impact walls 18 energy loss that produces and collide sound.

Figure 29 (a) and (b) represent other structure example of the impact walls 18 of embodiment 3 respectively, represent identical with minimizing starting position 19c with the stabilizer side end 19a(of impact walls 18) the vertical cross section of fan end plate 12b.The feature of this structure example is, the length LD19a of the length LU19a> bottom surface 18b of opposite face 18a.The shape of the impact walls 18 at rear guide portion side end 19b, 20a place, position is therebetween identical with the shape shown in Figure 22, Figure 25.In the structure shown here, about the opposite face ratio (LU/LD) of the position of impact walls 18, the relation of formula (3) is met.

LU19a/LD19a（>1）

>LU20a/LD20a

≥LU19b/LD19b……（3）

In impact walls 18, formed at collision area E3 as illustrated in fig. 14 with the opposite face 18a of fan 8 and hold up P1a, prevent the outside of room air machine 1 indoor by blow-off outlet 3 to space S adverse current.Become by the eddy current F1 produced in the inside of fan 8 part of minimal pressure and stabilizer side end 19a and near impact walls 18, such as adopt the shape held up reliably being formed and prevent suck-back to the impact walls reduced the 19c of starting position from stabilizer side end 19a.Figure 29 (a) is the length (LU19a) of the rotation direction AX constituting opposite face 18a longly, thus can prevent holding up of the width needed for suck-back in the formation of the both ends of fan 8.

On the other hand, because the length of the rotation direction AX from fan end plate 12b of bottom surface 18b is shorter than opposite face 18a, so the length of the left and right directions (rotation direction AX) of blowout wind path 11.The area of blowout wind path 11 becomes large, and the air quantity of blowout air-flow becomes many.But as mentioned above, easily causing near the stabilizer side end 19a of suck-back, the length (LD19a) of bottom surface 18b is even if adopt the length that also can not be caused the wind speed of the degree of suck-back when the rotating speed of fan 8 is low.

In addition, in the same manner as embodiment 1,2, part close to rear guide portion side end 19b is difficult to cause suck-back, thus it is shorter than stabilizer side end 19a by the length of the rotation direction AX making opposite face 18a, thus, to be formed in this position by the part of air-flow and prevent holding up needed for suck-back, and using other parts of air-flow as air-supply air-flow, energy loss and collision sound can be reduced.

Figure 29 (b) is using the structure in the face that rotation direction AX is connected with inner side as inclined plane 21 of the opposite face 18a at Figure 29 (a).In the structure of Figure 29 (b), by the inclined plane 21 being formed at edge Hb inside fan of the opposite face 18a of impact walls 18, the air-flow flowed in the bight to opposite face 18a smoothly flows and the blow-off outlet 3 in downstream of leading along inclined plane 21.Thereby, it is possible to suppress the generation of the disorder shown in Figure 20 (d).

Above, with with the fan end plate 12a of circular plate shape at two ends being arranged at cross flow fan 8, in cross section during the vertical plane cutting impact walls 18 of 12b, impact walls 18 is in polygon, and there is opposite face 18a, bottom surface 18b, with impact walls side 18c, this bottom surface 18b is relative with opposite face 18a in the opposition side of fan extension 8a, this impact walls side 18c links opposite face 18a and bottom surface 18b in the inner side of left and right directions, if on the AX of rotation direction from fan end plate 12a, the length of the opposite face 18a that 12b starts is LU, and on the AX of rotation direction from fan end plate 12a, when the length of the bottom surface 18b that 12b starts is LD, about the opposite face ratio obtained with LU/LD, the opposite face ratio (LU19b/LD19b) of rear guide portion side end 19b is less than the opposite face ratio (LU19a/LD19a(>=1) of stabilizer side end 19a), suck-back can be prevented thus, and guarantee air-flow of blowing, especially, air-flow smoothly to be led blow-off outlet 3 by the inclined plane 21 of edge Hb inside the fan of opposite face 18a, suck-back can be prevented thus, and have and reduce the energy loss that caused by airflow collision and the effect reducing power consumption.

In addition, with in the cross section of the plane cutting impact walls 18 vertical with fan end plate 12a, the 12b of circular plate shape at the two ends being arranged at cross flow fan 8, formed with the inclined plane that obtuse angle is crossing by with opposite face 18a with the face that opposite face 18a connects in the inner side of left and right directions, thus, compared with the situation adopting the bight of vertically intersecting with edge Hb inside the fan of impact walls 18, can suppress to peel off at adjacent corner, disorderly, and there is the effect that can realize low-power and low noise.

Embodiment 4

Below, based on accompanying drawing, embodiment 4 of the present utility model is described.In embodiment 4, as shown in the Figure 25 (b) in Figure 20 (a) and (b) in embodiment 1, the Figure 22 (b) in embodiment 2, (c), embodiment 3, (c), become in the inner side of left and right directions (rotation direction AX) and the face that the opposite face 18a of impact walls 18 connects and have with opposite face 18a with the structure of the crossing inclined plane 21 in obtuse angle.Opposite face 18a and inclined plane 21 angulation of impact walls 18 are angle θ, are described about this angle θ.Here, on the right part of machine 1 disposed in the interior impact walls 18 when, be deasil angle θ with inclined plane 21 angulation from opposite face 18a.On the left part of machine 1 disposed in the interior impact walls 18 when, due to the shape making the impact walls 18 of right part become left and right upset, so be angle θ with inclined plane 21 angulation widdershins from opposite face 18a.

Figure 30 is the sectional view (Figure 30 (a)) of the impact walls 18 representing 20a place, position and the key diagram (Figure 30 (b)) of explanation angle θ.In addition, Figure 31 is the sectional view (Figure 31 (a)) of the impact walls 18 represented in rear guide portion side end 19b and the key diagram (Figure 31 (b)) of explanation angle θ.Opposite face 18a after the opposite face 18a at 20a place, position and inclined plane 21 angulation θ (20a) > in guide portion side end 19b and inclined plane 21 angulation θ (19b).Such as, angle θ (20a) is 150 DEG C, and angle θ (19b) is 120 °.Here, about the position of the depth direction AY of opposite face 18a, position in Figure 30 is between stabilizer side end 19a and rear guide portion side end 19b, but as long as guide portion side end 19b more leans on the position of stabilizer 9 side after the ratio shown in Figure 31, which position can, here the situation of such as position 20a is described.

At 20a place, position, as shown in Figure 30 (b), the opposite face 18a of air-flow and impact walls 18 vertically flows into, but is broken down into the component (B1) vertical with inclined plane 21 and the component parallel with inclined plane 21 (B2) to the air-flow B that inclined plane 21 flows in inclined plane 21.The component (B2) parallel with inclined plane 21 flows to blow-off outlet 3 along inclined plane 21 from impact walls side 18c.On the other hand, the component (B1) vertical with inclined plane 21 collides with inclined plane 21 and the power conversion of wind speed is become the energy of pressure, inclined plane 21 is formed and holds up, and assists the formation held up with inclined plane 21 continuous print opposite face 18a.

Figure 31 (b) is also same, and the air-flow B flowed to inclined plane 21 is broken down into the component (B1) vertical with inclined plane and the component parallel with inclined plane (B2) in inclined plane 21.The component (B2) parallel with inclined plane flows along inclined plane 21 to impact walls side 18c.On the other hand, vertical with inclined plane component (B1) and inclined plane 21 are collided and are formed between inclined plane 21 and hold up.

Due to angle θ (20a) > angle θ (19b), so at air-flow B(20a) and air-flow B(19b) for formed objects, with inclined plane 21(20a) with inclined plane 21(19b) the vertical air-flow of inclined plane be component B1(20a) > component B1(19b).That is, in stabilizer 9 side easily causing suck-back, be formed at than large the holding up of rear guide portion side end 19b the length that inclined plane 21 determines the rotation direction AX of the bottom surface 18b in the stabilizer side end 19a of impact walls 18, reliably can prevent suck-back.

On the other hand, due to angle θ (20a) > angle θ (19b), so at air-flow B(20a) and air-flow B(19b) when being formed objects, with inclined plane 21(20a) with inclined plane 21(19b) the parallel air-flow of inclined plane be component B2(20a) < component B2(19b).That is, be difficult to cause suck-back and low hold up guide portion side end 19b fully, compared with stabilizer side end 19a, the component B2 acting on air-supply air-flow becomes large.Therefore, with make angle θ identical with stabilizer side end 19a compared with situation about forming, the increase of being collided the energy loss caused by air-flow and impact walls 18 can be suppressed, the suppression of power consumption can be realized.In addition, the noise produced by collision can also be suppressed.

Figure 32 is the line chart that transverse axis represents the position of depth direction, the longitudinal axis represents the angle θ of inclined plane 21.Rake is not had to minimizing starting position 19c from stabilizer side end 19a, thus the angle θ in stabilizer side end 19a is 180 °, angle θ in rear guide portion side end 19b adopts 120 °, position between them, at position 20a, position 20b, angle θ smoothly reduces with substantially linear.Along with angle θ diminishes, and can produce between inclined plane 21 hold up minimizing.That is, the position of depth direction AY is along with guide portion 10 side (rear guide portion side end 19b) after trend, and air-supply air-flow becomes many, thus is being difficult to the position causing suck-back, and the energy of wind speed is directly used in air-supply.Meanwhile, the air-flow collided with impact walls 18 reduces, thus can reduce the energy loss and collision sound that are caused by airflow collision.

On the other hand, the position of depth direction AY is along with trend stabilizer 9 side (stabilizer side end 19a), and air-supply air-flow reduces, and the air-flow collided with impact walls 18 increases.Thus, in stabilizer 9 side easily causing suck-back, reliably suck-back can be prevented.

Figure 32 is an example, is not limited thereto.That is, angle θ also can not be made to change with linearity gradually.Also can such as stepped or curve-like ground change.

In addition, the structure that edge Hb has an inclined plane 21 inside this fan is applied to embodiment 2, the entire infrastructure shown in embodiment 3.In addition, even if do not form inclined plane 21, the opposite face 18a that also can be applicable to impact walls 18 becomes the situation of the shape of the angle larger than 90 ° with impact walls side 18c.As shown in Figure 9, in fact at rear guide portion side end 19b, the distance formed between the rear guide portion 10 of blowout wind path 11 and the periphery of fan 8 is close, thus the length being formed in the impact walls side 18c on the blowout wind path 11 between rear guide portion 10 and the periphery of fan 8 shortens.That is, as shown in Figure 31 (a), when form the little inclined plane 21 of angle θ, before being connected with impact walls side 18c, the possibility becoming the position of bottom surface 18b is high.In this situation, also impact walls side 18c can be considered as inclined plane 21.

In explanation so far, from stabilizer side end 19a to minimizing starting position 19c, shape edge Hb inside fan not being arranged to inclination is illustrated.But, by making edge Hb inside the fan of stabilizer side end 19a become 90 °, when this bight becomes the large reason of air turbulence, also rake can be set in this bight.If there is impact walls 18 with sufficient length on the rotation direction AX of the opposite face 18a of fan 8, even if then edge Hb arranges inclination inside the fan of opposite face 18a, the air-flow collided with opposite face 18a and inclined plane also can be utilized to be formed and can prevent holding up fully of suck-back.

In addition, also from stabilizer side end 19a to minimizing starting position 19c, by the bight of edge Hb inside the fan of opposite face 18a by Surface forming, thus, smooth-going face can be become for air-flow, the disorder of the air-flow caused by bight can be suppressed.During actually by shaping rear guide portion 10, sidewall 30, impact walls 18 such as injection mo(u)ldings, most bight is made up of the shape with fillet.

Above, with in the cross section of the plane cutting impact walls 18 vertical with fan end plate 12a, the 12b of circular plate shape at the two ends being arranged at cross flow fan 8, formed with the inclined plane that obtuse angle is crossing by with opposite face 18a with the face that opposite face 18a connects in the inner side of left and right directions, thus, adopt compared with the situation in the bight of right angle intersection with edge Hb inside the fan of impact walls 18, can suppress to peel off at adjacent corner, disorderly, and there is the effect that can realize low-power and low noise.

In addition, about the angle θ between inclined plane 21 and opposite face 18a, this side of inclined plane 21 being arranged on rear guide portion 10 side is formed than the inclined plane 21 being arranged on stabilizer 9 side littlely, thus, hold up to prevent the width needed for suck-back (length of rotation direction AX) from being formed at stabilizer side end 19a, while rear guide portion side end 19b formation holds up, increase air-supply air-flow and increase air quantity, there is the effect realizing low-power and low noise while can preventing suck-back.

In addition, in embodiment 1 ~ embodiment 4, the length from stabilizer side end 19a to the rotation direction AX reducing starting position 19c, opposite face 18a is constant, but is not limited thereto.Obtain preventing holding up fully of suck-back in stabilizer side end 19a, when also being held up fully near the position 20a of rear guide portion side end 19b from this part, also can not arrange and reduce starting position 19c, the length of the rotation direction AX of the opposite face 18a from stabilizer side end 19a is reduced.

The explanation of Reference numeral

1 indoor set (air conditioner), 2 suction grids, 3 blow-off outlets, 4 wind direction blades, 5 electrostatic (electric dust) precipitators, 6 filters, 7 heat exchangers, 8 cross flow fans (impeller), 8a fan extension, 9 stabilizers, guide portion after 10, 11 blowout wind paths, 12 support plates, 12a, 12b fan end plate, 13 wings, 14 connect (impeller monomer), 14a end segments, 15 fan hubs, 16 motors, 17 rotations, 18 impact walls, 18a opposite face, 18b bottom surface, 18c impact walls side, 19a stabilizer side end, guide portion side end after 19b, 19c reduces starting position, 21 inclined planes, 30 sidewalls.

Claims (10)

1. an air conditioner, is characterized in that, has: indoor set main body, heat exchanger and cross flow fan;

Described indoor set main body have room air is sucked suction inlet, by the blowout wind path of the described air sucked from described suction inlet to the blow-off outlet of indoor blowout and described blow-off outlet that the described air sucked from described suction inlet is led;

Described heat exchanger, in described indoor set main body, carries out heat exchange with the described air sucked from described suction inlet;

Described cross flow fan, in described indoor set main body, carries described air from described suction inlet to described blow-off outlet,

When observing from the front of described indoor set main body, be made up of stabilizer before described blowout wind path, described stabilizer to be led by described cross flow fan described blow-off outlet by the described air of blowing, the back side of described blowout wind path is made up of rear guide part, described rear guide part to be led by described cross flow fan described blow-off outlet by the described air of blowing

When observing from the front of described indoor set main body, the end of the left and right of described blowout wind path is provided with impact walls, and this impact walls is arranged to connect described stabilizer and described rear guide part, and has the opposite face relative with described cross flow fan,

Described opposite face, from the distance of this opposite face outer thoughtful of described cross flow fan with identical to the distance of the stabilizer side end being positioned at described stabilizer side from the rear guide part side end being positioned at described rear guide part side,

The length being positioned at the rotation direction of the described cross flow fan of the rear guiding side end of described rear guiding side is shorter than the length in described rotation direction of the stabilizer side end being positioned at described stabilizer side.

2. air conditioner as claimed in claim 1, is characterized in that,

The end face of the end of the left and right of described cross flow fan is provided with the end plate of circular plate shape,

Described impact walls has described opposite face, be positioned at the position, opposition side of described cross flow fan and the bottom surface relative with described opposite face, the impact walls side of described opposite face and described bottom surface is linked with the inner side at described blowout wind path, setting the length of the described opposite face from described end plate on described rotation direction as LU, if when the length of the described bottom surface from described end plate on described rotation direction is LD, about the opposite face ratio obtained with LU/LD, the described opposite face of described rear guiding side end is than the described opposite face ratio being less than described stabilizer side end.

3. air conditioner as claimed in claim 1, is characterized in that,

There is in the way of described impact walls between described stabilizer side end and described rear guiding side end the minimizing starting position during length in the described rotation direction of shortening described opposite face,

From described stabilizer side end to described minimizing starting position, the length in the described rotation direction of described opposite face is made to become identical length.

4. air conditioner as claimed in claim 2, is characterized in that,

There is in the way of described impact walls between described stabilizer side end and described rear guiding side end the minimizing starting position during length in the described rotation direction of shortening described opposite face,

From described stabilizer side end to described minimizing starting position, the length in the described rotation direction of described opposite face is made to become identical length.

5. the air conditioner according to any one of Claims 1 to 4, is characterized in that,

The end face of the end of the left and right of described cross flow fan is provided with the end plate of circular plate shape,

With in the cross section of impact walls described in the plane cutting orthogonal with described end plate, formed with the inclined plane that obtuse angle is crossing by with described opposite face with the face that described opposite face connects in the inner side of described blowout wind path.

6. air conditioner as claimed in claim 5, it is characterized in that, about the angle θ between described inclined plane and described opposite face, this side of angle θ arranging the described inclined plane of side of leading in the rear is less than the angle θ of the described inclined plane being arranged on described stabilizer side.

7. the air conditioner as described in claim 2 or 6, is characterized in that, is polygon with the cross section of impact walls described in the plane cutting orthogonal with described end plate.

8. air conditioner as claimed in claim 5, it is characterized in that, be polygon with the cross section of impact walls described in the plane cutting orthogonal with described end plate.

9. the air conditioner according to any one of Claims 1 to 4,6, is characterized in that, when observing from the front of described indoor set main body, described blow-off outlet is formed along the left and right directions of described indoor set main body.

10. air conditioner as claimed in claim 5, is characterized in that, when observing from the front of described indoor set main body, described blow-off outlet is formed along the left and right directions of described indoor set main body.