CN101517321B

CN101517321B - Air conditioner

Info

Publication number: CN101517321B
Application number: CN2007800341127A
Authority: CN
Inventors: 佐藤公二; 本庄稔
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2006-09-29
Filing date: 2007-09-28
Publication date: 2011-09-28
Anticipated expiration: 2027-09-28
Also published as: JP4187032B2; CN101517321A; JP2008089205A; WO2008041627A1

Abstract

The present invention provides an air conditioner having, in order to reduce noise with sufficient amount of airflow achieved, a heat exchanger, a cross flow fan, a tongue section (11), and an outlet opening. A comb-like section (20) formed by alternately arranging comb teeth (21) and grooves (22) is placed at the tongue section (11) facing the cross flow fan, along the longitudinal direction of the tongue section (11). The grooves (22) include deep grooves (22a) and shallow grooves (22b). The comb-like section (20) has a deep groove comb-like section (20a) constructed from comb teeth (21) and the deep grooves (22a) and a shallow groove comb-like section (20b) constructed from comb teeth (21) and the shallow grooves (22b).

Description

Air conditioner

Technical field

The present invention relates to use the air conditioner of cross flow fan, especially relate to the indoor set of air conditioner.

Background technology

Usually, in the indoor unit of air conditioner, use cross flow fan mostly as pressure fan, the noise that produces when reducing the running of this cross flow fan is provided with preceding tongue (stabilizer) in the side of returning of cross flow fan.Like this, as the conventional example of wanting to realize that noise reduces, for example can enumerate Japanese kokai publication hei 11-118177 communique (patent documentation 1), TOHKEMY 2005-90764 communique (patent documentation 2), TOHKEMY 2005-300133 communique (patent documentation 3).

In above-mentioned patent documentation 1, use cross flow fan as pressure fan, and the air introduction part is set with respect to tongue, the opening surface of this air introduction part sucks the zone from tongue region up to air and enlarges gradually.Thus, mitigation prevents that from the variation of tongue region up to the air influx in air suction zone the wing plate of fan propeller from moving to the violent change that the regional moment wing plate ambient air of air suction flows from tongue region, realizes the reduction of noise thus.

In above-mentioned patent documentation 2, on the stabilizer (tongue) that the direction of rotation that along cross flow fan is Air Blast fan is extended, form the recess with a plurality of square column shapes of the relative opening of Air Blast fan, and with this recess towards the upstream-side-end of opening and at least one square the becoming in the end of downstream side along the arc sections of stream axial bending.Thus,, the recess of tongue therefore can suppress noise because playing a role as the resonance type muffler, and, because the edge part of recess is an arc sections, therefore compare with non-curved shape, can suppress the cavity noise that causes by the impact that air flows.And, have enough air quantity performances.

And, in above-mentioned patent documentation 3, stabilizer (tongue) being arranged near the outlet in the housing, and on this tongue, arranging fin and recessed rib be set near the mode of cross flow fan (cross flow fan).Thus, the instability of the air that is produced by cross flow fan is flowed become stable, guiding even flow and pressure distribution realize the reduction of the mobile noise of air conditioner thus.

But in above-mentioned patent documentation 1～3, existence can't be guaranteed sufficient air quantity, the especially problem of the deficiency in draught of cross flow fan both end sides in the whole axial range of cross flow fan.And for noise, though realized the reduction of noise to a certain degree, noise in operating is still ear-piercing at dead of night, has the problem that needs further to reduce noise.

Summary of the invention

The present invention makes in view of the above problems, and the air conditioner of having realized following purpose at least is provided.

(1) guarantees air quantity, reduction noise.

(2) guaranteed as the two ends air quantity of cross flow fan shortcoming.

(3) by further reducing noise, also can provide comfortable environment even make to wait at dead of night in the running.

(4) realize the homogenising of the air quantity that cross flow fan is axial.

Therefore, in air conditioner of the present invention, described air conditioner has: heat exchanger, and it carries out heat exchange to inhaled air; Cross flow fan, it is arranged on the downstream of this heat exchanger; Tongue, it is along the axially approaching configuration of this cross flow fan; And blow-off outlet, its rotation by described cross flow fan blows out heat-exchanged air, it is characterized in that, facing on the described tongue of described cross flow fan, be equipped with the pars pectinata of broach shape along the length direction of this tongue, described pars pectinata by arrangement alternately a plurality of broach is set and a plurality of groove constitutes, described groove comprises deep trouth and the more shallow shallow slot of the degree of depth that the degree of depth is darker, described pars pectinata has: the deep trouth pars pectinata that is made of described broach and deep trouth, and the shallow slot pars pectinata that is made of described broach and shallow slot.

In having the air conditioner of the present invention of described structure, because will have the pars pectinata of described deep trouth pars pectinata and described shallow slot pars pectinata is configured on the described tongue, therefore the groove (deep trouth and shallow slot) of pars pectinata becomes the path of air, make the air that returns of cross flow fan can whirlpoolization, can reduce the interrupted noise that causes by whirlpoolization.Thus, the noise in the time of can reducing running such as late into the night can provide more comfortable space.And owing to utilize deep trouth pars pectinata and shallow slot pars pectinata to make the generation of noise that difference take place constantly, noise also can be reduced noise thus by decentralized.Like this, while by guaranteeing air quantity, reduce noise, thereby can provide efficient higher air conditioner.

In one embodiment, air conditioner of the present invention is characterised in that, arranges a plurality of described deep trouth pars pectinatas and constitutes deep trouth pectination row, and, arrange a plurality of described shallow slot pars pectinatas and constitute shallow slot pectination row, and described deep trouth pectination row and shallow slot pectination row are configured on the described tongue.

In one embodiment, air conditioner of the present invention is characterised in that, in described deep trouth pectination row, the degree of depth constant of deep trouth, spacing configuration to equate such as deep trouth pars pectinata, simultaneously, in described shallow slot pectination row, the degree of depth constant of shallow slot, the spacing configuration of shallow slot pars pectinata to equate.

In one embodiment, air conditioner of the present invention is characterised in that, in described deep trouth pectination row, at least any one party in the disposition interval of the degree of depth of deep trouth and deep trouth pars pectinata is at random, simultaneously, in described shallow slot pectination row, at least any one party in the disposition interval of the degree of depth of each groove of shallow slot and shallow slot pars pectinata is at random.

In one embodiment, air conditioner of the present invention is characterised in that, described shallow slot pars pectinata is configured in respectively near the both ends of described tongue.

In this embodiment, owing to described shallow slot pars pectinata is configured in respectively near the both ends of described tongue, therefore can increases the air quantity at this shallow slot pars pectinata place, therefore, the air quantity at cross flow fan two ends increases, and can make the axial air quantity homogenising of cross flow fan.Thus, utilize be formed on the tongue by the shallow slot pars pectinata that constitutes by the more shallow shallow slot that forms of groove that makes the pars pectinata two ends, can increase as the both sides air quantity of cross flow fan shortcoming, can make the axial air quantity homogenising of cross flow fan.

In one embodiment, it is characterized in that, described deep trouth pars pectinata is configured near the both ends of described tongue and is configured in than described shallow slot pars pectinata more by the position of both end sides.

In this embodiment, owing to be configured in described deep trouth pars pectinata near the both ends of described tongue and be configured in than described shallow slot pars pectinata more by the position of both end sides, near the air quantity the wall is reduced, make the air quantity homogenising, simultaneously, can suppress the generation of noise.

In one embodiment, it is characterized in that, described deep trouth pars pectinata is configured in the middle body of described tongue.

In this embodiment, by suppressing the air output of the middle body that wind pushing performance is good originally slightly, can make the further homogenising of axial air quantity of cross flow fan 10.

Description of drawings

Can understand the present invention fully from following detailed description and accompanying drawing.Accompanying drawing is only used for describing, and does not limit the invention.In the accompanying drawings,

Fig. 1 is the fragmentary perspective cross sectional view of the indoor unit of the air conditioner in the embodiments of the present invention;

Fig. 2 is the indoor unit cutaway view in the embodiments of the present invention;

Fig. 3 is the amplification stereogram of the A portion of the Fig. 1 in the embodiments of the present invention;

Fig. 4 (a), Fig. 4 (b) are the front view and the rearview of the tongue in the embodiments of the present invention;

Fig. 5 is the cutaway view along the B-B line of Fig. 4 (b) in the embodiments of the present invention;

Fig. 6 is used for illustrating the deep trouth of pars pectinata of embodiments of the present invention and the key diagram of shallow slot;

Fig. 7 (a) is the schematic diagram of cross flow fan, (b) is the key diagram that the air quantity of the cross flow fan on the tongue of existing type distributes is shown, and (c) is the key diagram that the air quantity of the cross flow fan on the tongue that illustrates in the embodiments of the present invention distributes.

The specific embodiment

Below, with reference to accompanying drawing embodiments of the present invention are elaborated.Fig. 1 illustrates the fragmentary perspective cross sectional view of the indoor unit 1 of air conditioner, and Fig. 2 illustrates the cutaway view of indoor unit 1.Grid 3 and front panel 4 before the front side of the shell main body 2 that constitutes indoor unit 1 shell is separately installed with, and the office, bight of bottom is provided with blow-off outlet 5 in front.

And, as shown in Figure 2, be provided with in the inside of shell main body 2 to make and suck the air-supply path 7 of air towards above-mentioned blow-off outlet 5 circulations, be equipped with the cross section in the upstream in this air-supply path 7 and be indoor heat converter 6 against V word shape.And then, be provided with cross flow fan 10, tongue 11 and back guide portion 12 successively in the downstream of this indoor heat converter 6.The fan propeller 10a of cross flow fan 10 is adapted in Fig. 2 can be towards rotation counterclockwise, and the above-mentioned tongue 11 of strip is near the fan propeller 10a that is axially disposed within this cross flow fan 10 of this cross flow fan 10 and be positioned at the position of blow-off outlet 5 tops.That is, tongue 11 is configured between the end portion (blow-off outlet 5 side parts) and cross flow fan 10 of the indoor heat converter 6 that is positioned at housing 2 front sides.

And, downside at tongue 11 is provided with the air stream guide portion 13 that is also used as drain pan continuously, this air stream guide portion 13 all forms air towards blow-off outlet 15 with back guide portion 12 and blows out path 14, so that the air stream that blows out from the fan propeller 10a of cross flow fan 10 can blow out from blow-off outlet 5 efficiently.And it is that the mode that rotate freely at the center is arranged on the opening surface of blow-off outlet 5 that wind direction alteration board 15 adopts with axle 16.

In the indoor unit 1 of above-mentioned air conditioner, by the action of cross flow fan 10, having formed in the past, the side inhaled air flows from the air that blow-off outlet 5 blows out.Promptly, utilize cross flow fan 10 fan propeller 10a rotation and with its effect near the tongue 11 that is provided with, generated the eccentric vortex that vortex center is positioned at fan propeller 10a inboard, on the other hand, the air stream that traverses along its diametric(al) has been flowed out towards blow-off outlet 5 by fan propeller 10a.And then, by this air-flow, utilize 6 pairs of heat exchangers suck air carry out heat exchange after from blow-off outlet 5 towards indoor air-supply.

Fig. 3 illustrates the amplification stereogram of the tongue 11 of the A portion among Fig. 1, and Fig. 4 (a) illustrates the front view of tongue 11, and Fig. 4 (b) illustrates the rearview of tongue 11.And Fig. 5 illustrates the cutaway view along the B-B line of Fig. 4 (b).As Fig. 3～shown in Figure 5, pars pectinata 20 roughly spreads all over the front portion that is formed on continuously endlong in the face of the tongue 11 of the face of the fan propeller 10a of cross flow fan 10 along its length direction.This pars pectinata 20 is to arrange broach 21 and groove 22 continuously and constitute every predetermined interleaved.In more detail, groove 22 is formed by mutual opposed of two adjacent broach 21 and the surface that is present in the tongue 11 between these opposed faces.The leading section of broach 21 forms smoothly crooked and towards the side-prominent shape of the fan propeller of cross flow fan, and the bottom surface 221 of groove 22 (surface that is present in the tongue 11 between the broach 21 of adjacency) equally also forms crooked smoothly and towards the side-prominent shape of the fan propeller of cross flow fan (with reference to Fig. 5).The leading section 21a that the overhangs that broach 21 is given prominence to from the bottom surface 221 of groove 22 on normal direction form at broach is maximum, descend the direction both sides to dwindle gradually thereon, thereby the leading section 21a of broach 21 forms level and smooth curved shape.In this manual, " degree of depth " of so-called groove refers to " overhang " that this broach 21 is given prominence to from groove bottom 221, in the present embodiment, deep trouth 22a and shallow slot 22b be according to distinguishing with described " overhang " of the protuberance of its corresponding respectively broach 21, also can be according to other part as benchmark.

And, as shown in Figure 6, in this embodiment, be provided with deep trouth 22a and the shallow shallow slot 22b of depth ratio deep trouth 22a that has deepened the degree of depth as groove 22, be arranged side by side a pair of deep trouth 22a and broach 21 formation deep trouth pars pectinata 20a, be arranged side by side a pair of shallow slot 22b and broach 21 formation shallow slot pars pectinata 20b.And, form deep trouth pectination row 20A by a plurality of deep trouth pars pectinata 20a that are arranged side by side predetermined number, form shallow slot pectination row 20B by a plurality of shallow slot pars pectinata 20b that are arranged side by side predetermined number.In this case, in deep trouth pectination row 20A and shallow slot pectination row 20B, each degree of depth constant of deep trouth 22a and shallow slot 22b, deep trouth pars pectinata 20a and shallow slot pars pectinata 20b spacing configuration to equate.And then, shown in Fig. 4 (a), interconnected deep trouth pectination row 20A and shallow slot pectination row 20B and constitute pars pectinata 20.Deep trouth pectination row 20A is arranged on the middle body of the pars pectinata 20 of tongue 11, shallow slot pectination row 20B is separately positioned on the both sides of these deep trouth pectination row 20A.Further, at the two ends of the tongue 11 that links to each other with these shallow slot pectination row 20B deep trouth pectination row 20A is set.Herein, the shallow more air quantity of the degree of depth of each groove 22 of pars pectinata 20 is big more, and the dark more air quantity of the degree of depth of opposite groove 22 is more little.

And, as shown in Figure 7, by deep trouth pectination row 20A being configured in the both ends of tongue 11, and the approaching deep trouth pectination row 20A that is configured in tongue 11 both ends disposes shallow slot pectination row 20B, the generation reason of noise can be removed, simultaneously, the low situation of air quantity of both sides can be improved.That is, Fig. 7 (a) illustrates cross flow fan 10, and the air quantity that Fig. 7 (b) illustrates the cross flow fan on the tongue of existing type distributes.In the present invention, owing to deep trouth pectination row 20A is configured in the two ends of tongue 11, and the approaching deep trouth pectination row 20A that is configured in tongue 11 both ends disposes shallow slot pectination row 20B, therefore can utilize this each

pectination row

20A, 20B to increase air quantity, therefore, shown in Fig. 7 (c), the air quantity at cross flow fan 10 two ends increases shown in the oblique line part like that, can make the axial air quantity homogenising of cross flow fan 10.Promptly, in existing type (slotless and roughly spread all over the tongue that total length all has the common shape of impartial cross sectional shape), by being configured in, shallow slot pectination row 20B, air quantity is increased because the existence of wall causes the reduction of air quantity to become significant than on the also close position at both ends of part X.In addition, be to expect that also air quantity increases, and becomes the generation reason of noise on the contrary even deep trouth pectination row 20A is arranged on both ends because shallow slot pectination row 20B is set in part near wall.Thus, utilize near the shallow slot pectination row 20B that constitutes by shallow slot 22b the both ends be formed at the pars pectinata 20 on the tongue 11, can increase, can make the air quantity homogenising as the both sides air quantity of cross flow fan 10 shortcomings.

And, owing to deep trouth pectination row 20A is configured in the middle body of tongue 11, dispose shallow slot pectination row 20B in its both sides respectively, therefore can suppress the air output of the middle body that wind pushing performance is good originally slightly, can make the further homogenising of axial air quantity of cross flow fan 10.And the rectified action performance function based on two

pectination row

20A, 20B can make the air quantity homogenising that blows out from blow-off outlet 5.

Further, by the pars pectinata 20 (deep trouth pars pectinata 20a and shallow slot pars pectinata 20b) that is formed at the pectination on the tongue 11, the groove 22 of pars pectinata 20 (deep trouth 22a and shallow slot 22b) becomes the path of air, make the air that returns of cross flow fan 10 can whirlpoolization, can reduce the interrupted noise that causes by whirlpoolization.Thus, the noise in the time of can reducing running such as late into the night can provide more comfortable space.And owing to utilize deep trouth pars pectinata 20a and shallow slot pars pectinata 20b to make the generation of noise that difference take place constantly, noise also can be reduced noise thus by decentralized.Like this, while by guaranteeing air quantity, reduce noise, thereby can provide efficient higher air conditioner.

The configuration of deep trouth pars pectinata 20a in the pars pectinata 20 of tongue 11 and shallow slot pars pectinata 20b is not limited to Fig. 4 (a), also can shorten the length of deep trouth pectination row 20A and shallow slot pectination row 20B, deep trouth pectination row 20A and shallow slot pectination row 20B that interconnected quantity is Duoed than illustrated example.And, in deep trouth pectination row 20A and shallow slot pectination row 20B, any one party in the disposition interval of each groove depth of deep trouth 22a and shallow slot 22b and deep trouth pars pectinata 20a and shallow slot pars pectinata 20b or both sides can be at random, also can access above-mentioned same action effect in this case.Further, deep trouth pectination row 20A and shallow slot pectination row 20B can be set also, but mix deep trouth pars pectinata 20a and shallow slot pars pectinata 20b randomly, also can play the effect that reduces the noise in the air conditioner in this case.At this moment, the degree of depth of the deep trouth 22a of spacing between broach 21 and the groove 22 and pars pectinata 20 and shallow slot 22b also can be at random.

More than embodiments of the present invention are illustrated, but can certainly carry out various changes.This change should not be viewed as and broken away from the spirit and scope of the present invention, in the claim that continues before self-explantory for a person skilled in the art change is included in.

Claims

1. air conditioner, described air conditioner has: heat exchanger (6), it carries out heat exchange to inhaled air; Cross flow fan (10), it is arranged on the downstream of this heat exchanger (6); Tongue (11), it is along the axially approaching configuration of this cross flow fan (10); And blow-off outlet (5), its rotation by described cross flow fan (10) blows out heat-exchanged air, it is characterized in that,

In the face of on the described tongue (11) of described cross flow fan (10), be equipped with the pars pectinata (20) of broach shape along the length direction of this tongue (11), described pars pectinata (20) constitutes by be staggered a plurality of broach (21) and a plurality of groove (22),

Described groove (22) comprises the shallow slot (22b) of dark deep trouth of the degree of depth (22a) and depth as shallow,

Described pars pectinata (20) has: the deep trouth pars pectinata (20a) that constitutes by described broach (21) and deep trouth (22a), and by the shallow slot pars pectinata (20b) of described broach (21) and shallow slot (22b) formation.

2. air conditioner according to claim 1 is characterized in that,

Arrange a plurality of described deep trouth pars pectinatas (20a) and constitute deep trouth pectination row (20A), and, arrange a plurality of described shallow slot pars pectinatas (20b) and constitute shallow slot pectination row (20B), and described deep trouth pectination row (20A) and shallow slot pectination row (20B) are configured on the described tongue (11).

3. air conditioner according to claim 2 is characterized in that,

In described deep trouth pectination row (20A), the degree of depth constant of deep trouth (22a), the spacing configuration of deep trouth pars pectinata (20a) to equate, and, in described shallow slot pectination row (20B), the degree of depth constant of shallow slot (22b), the spacing configuration of shallow slot pars pectinata (20b) to equate.

4. air conditioner according to claim 2 is characterized in that,

In described deep trouth pectination row (20A), at least any one party in the disposition interval of the degree of depth of deep trouth (22a) and deep trouth pars pectinata (20a) is at random, and, in described shallow slot pectination row (20B), at least any one party in the disposition interval of the degree of depth of shallow slot (22b) and shallow slot pars pectinata (20b) is at random.

5. according to claim 3 or 4 described air conditioners, it is characterized in that,

Described shallow slot pectination row (20B) are configured in respectively near the both ends of described tongue (11).

6. air conditioner according to claim 5 is characterized in that,

Described deep trouth pectination row (20A) are configured near the both ends of described tongue (11) and are configured in than described shallow slot pectination row (20B) more by the position of both end sides.

7. air conditioner according to claim 5 is characterized in that,

Described deep trouth pectination row (20A) are configured in the middle body of described tongue (11).

8. air conditioner according to claim 6 is characterized in that,