CN1815091A - Air conditioner - Google Patents

Abstract

The present invention promotes a diffuser effect which is one of performance factors of a centrifugal air blower, and realizes a centrifugal air blower with high static pressure and high efficiency. An air conditioner according to the present invention has an indoor unit including an air inlet part, an air outlet part, and a partition plate 2 for dividing the indoor unit 1 into an air blower chamber 3 and a heat exchanger chamber 4. The air blower chamber includes a fan casing 7 in which a centrifugal fan 6 is located, and a motor 8 for driving the centrifugal fan 6. Herein, a tongue part 9 constituting a diffuser 14 of the fan casing 7 is formed from at least two arcs R1 and R2.

Description

Air conditioner

(1) technical field

The present invention relates to a kind of indoor unit of divergence type air conditioner.

(2) background technology

In the past, as this air conditioner, for example general known structure shown in Figure 6 (with reference to Japan Patent JP06-74920B) that has.

That is, air conditioner shown in Figure 6 is mounted in the air conditioner of the pipeline type that uses on ceiling and the garret equal-height position position or ceiling hanging type etc.This air conditioner has air suction inlet 102 below the rear portion of unit 101, reach in front to have air blow-off outlet 103,104 respectively below the front portion.The housing 105 of blower fan 105A, fan electromotor 105B and the heat exchanger 106 of the described blower fan 105A of driving are housed in setting in described unit 101.

In the structure of described air conditioner in the past, typically use spiral-shaped housing 105, the diffuser that constitutes the portion that blows out of housing 105 has the peristome of housing, and the peristome of this housing has the tongue of close blower fan 105A, and extends from tongue heat exchanger 106 sides.

Described diffuser and housing are the important composition key element that the speed of air can be transformed into the pressure energy together, and the long more then converted quantity of the length of diffuser is big more, can obtain high static pressure and high performance wind pushing performance.For a long time, the wind pushing performance of always wishing this diffuser can have further raising.

(3) summary of the invention

In order to solve above-mentioned prior art problems, the object of the present invention is to provide a kind of diffusion effect that can further promote the housing of pressure fan, obtain more to increase the air conditioner of static pressure and high performance wind pushing performance.

In order to solve above-mentioned prior art problems, air conditioner of the present invention, be provided with the separated dividing plate of supply fan room and heat exchanger chamber being provided with suction portion and blowing out in the indoor unit of portion, the Blower Housing of centrifugal blower is housed in setting in supply fan room, has the motor that drives described centrifugal blower, it is characterized in that the tongue that constitutes the diffuser of described Blower Housing is formed by 2 circular arcs at least.

Air conditioner of the present invention utilize to constitute the tongue shape of this diffuser, thereby the substantive length that can prolong diffuser further promotes the diffusion effect of the housing of pressure fan can obtain more to increase static pressure and high performance wind pushing performance.

(4) description of drawings

Fig. 1 is the cutaway view of the air conditioner in the embodiments of the invention 1.

Fig. 2 is the major part enlarged drawing of the supply fan room of the air conditioner in the embodiments of the invention 1,2.

Fig. 3 is the major part key diagram of the air conditioner in the embodiments of the invention 1,2.

Fig. 4 is for representing that fan efficiency of the present invention is with respect to the chart of blower fan diameter D with the variation of the ratio of tongue arc radius R1, R2.

Fig. 5 is the major part enlarged drawing of the supply fan room of the air conditioner in the embodiments of the invention 4.

Fig. 6 is the cutaway view of air conditioner in the past.

(5) specific embodiment

In the 1st invention, the tongue that constitutes the diffuser of Blower Housing is made of 2 circular arcs at least, thus, can prolong the substantive length of diffuser, further promotes the diffusion effect of the Blower Housing of pressure fan, can realize more increasing static pressure and high performance wind pushing performance.

In the 2nd invention, the tangent line formed angle tangent with 2 circular arc both ends separately that constitute described tongue is the obtuse angle, thus, can suppress near peeling off and flowing backwards of the air-flow blower fan.

In the 3rd invention, 2 circular arcs that will constitute described tongue with curve connect, and thus, air are flowed along tongue and diffuser, improve the efficient of pressure fan.

In the 4th invention, the diffuser of described housing is constituted from the upstream tongue shape that enlarges gradually downstream, thus, can be successfully the speed of the air that blows out from blower fan can be transformed into the pressure energy, can realize high efficiency pressure fan.

The pressure fan that the 5th invention is provided, the diameter D of described centrifugal blower is set in the scope of 0.025≤R1/D≤0.11 and 0.14≤R2/D≤0.22 with the circular arc R 1 that constitutes described tongue, the relation of R2, thus, can make shape be suitable for reaching further high performance most, can realize having the high performance pressure fan of versatility.

In the 6th invention, described tongue uses porous material, thus, can suppress near the pressure oscillation of the air of tongue, reduces noise.

Embodiments of the invention are described with reference to the accompanying drawings.The present invention is not limited to present embodiment.

(embodiment 1)

Fig. 1 is the cutaway view of the air conditioner in the embodiments of the invention 1.As shown in Figure 1, the inside of air conditioner body 1 has been separated into supply fan room 3 and heat exchanger chamber 4 by dividing plate 2.

The Blower Housing 7 of centrifugal blower 6 is housed in setting in supply fan room 3.Described centrifugal blower 6 is driven by motor 8.Have suction portion 5 below the rear portion of supply fan room 3, air flows in the supply fan room 3.Dispose the tongue 9 of diffuser 14 parts that constitute described Blower Housing 7 at the supply fan room 3 and the boundary member of heat exchanger chamber 4.The major part of diffuser 14 is configured in the heat exchanger chamber 4.

Dispose in the heat exchanger chamber 4 with the peristome of described diffuser 14 in opposite directions, be supported in the heat exchanger 10 on the side plate.In the bottom of this heat exchanger 10 drain pan 11 is set.

Have the portion of blowing out 13 in the front of heat exchanger chamber 4, this blows out portion 13 flow direction changer 12 is housed.

The following describes the as above effect of the air conditioner of structure.Under the driving of motor 8, indoor air flows in the supply fan room 3 from suction portion 5.Air in the inflow supply fan room 3 flows in the Blower Housing 7 along two suction sides of Blower Housing 7, boosts by centrifugal blower 6, then, can be transformed into the pressure energy along the spiral-shaped of Blower Housing 7 from speed.Then, blow out from the peristome of diffuser 14, carry out heat exchange,, send to indoor from blowing out portion 13 again by flow direction changer 12 change wind directions by heat exchanger 10 while air increases pressure under the effect of diffuser 14.

Fig. 2 be the air conditioner of expression in the embodiments of the invention 1,2 Blower Housing 7 omission the major part enlarged drawing of a peristome part of diffuser 14, the shape that constitutes the tongue of the present invention 9 of diffuser 14 parts has been made relatively with shape (dotted line) in the past.Fig. 3 is that the major part of the air conditioner in the expression embodiments of the invention is the major part key diagram of tongue.

As Fig. 2, shown in Figure 3, tongue 9 is formed by 2 circular arc R 1, R2, and the tangent line formed angle tangent with the both ends of each circular arc is obtuse angle (Θ 1, Θ 2) (with reference to Fig. 3).By making this obtuse angle shape, thereby diffuser 14 is enlarged gradually, can prolong the length of tongue 9 a little.

As shown in Figure 2, compare with the tongue shape in the past shown in the dotted line, the shape of tongue 9 of the present invention be near diameter be the radius of the centrifugal blower 6 of D be R1 arc sections slightly to blow out lateral deviation from the position on 1 arc sections that radius is R2 in addition is set again.Like this, among the present invention, when air when Blower Housing 7 blows out, at first at circular arc R 1 place, peeling off and flowing backwards to the air of suction side of air-flow is suppressed, and the tongue 9 that is extended along the length of tongue in fact compared with the past rises the static pressure of air, then, along because of the circular arc R 2 level and smooth diffusers that enlarge can further promote diffusion effect, can realize high static pressure and high efficiency wind pushing performance.

As mentioned above, in the present embodiment 1, the tongue 9 that constitutes the diffuser 14 of Blower Housing 7 is made of 2 circular arc R 1, R2 at least, thus, can prolong the substantive length of diffuser 14, further promote the diffusion effect of the Blower Housing 7 of pressure fan, can realize more increasing static pressure and high performance wind pushing performance.

In addition, in the present embodiment 1, the tangent line formed angle tangent with 2 circular arc R 1, the R2 both ends separately that constitute tongue 9 is the obtuse angle, thus, can suppress near the centrifugal blower 6 air-flows and peel off and flow backwards.

And in the present embodiment 1,2 circular arc R 1, the R2 that will constitute tongue 9 with curve connect, and thus, can make air-flow more along tongue 9 and diffuser 14, can improve the efficient of pressure fan.

(embodiment 2)

In the embodiments of the invention 2,, diffuser 14 and the tongue 9 that has 2 arc sections R1, R2 are at least constituted from the upstream tongue shape that enlarges gradually downstream as Fig. 2, shown in Figure 3.Specifically, 2 circular arc R 1 of formation tongue 9, the formed angle of tangent line (Θ 1, Θ 2) of R2 are the angle (Θ 2) of the angle (Θ 1) of upstream side less than the downstream.

As mentioned above, in the present embodiment, tongue 9 is constituted from the upstream downstream the tongue shape that enlarges gradually, thus, can be successfully the speed of the air that blows out from centrifugal blower 6 can be transformed into the pressure energy, can realize high efficiency pressure fan.

(embodiment 3)

Fig. 4 (A), (B) are that expression centrifugal blower efficient is with respect to the diameter D of centrifugal blower 6 of the present invention and the chart of the variation of the ratio of arc radius R1, the R2 of tongue 9.As can be seen, preferably the scope with R1/D is designed to 0.025≤R1/D≤0.11 from the result, and the scope of R2/D is designed to 0.14≤R2/D≤0.22, thus, can design and can keep high efficiency pressure fan.

When the air-flow that blows out when the centrifugal blower 6 from diameter D flows to R1 portion, the occasion of R1/D＜0.025, because of the circular arc of R1 portion is little, so caused the peeling off of collision of air-flow taken place easily, blower fan 6 is narrow and small with the gap of the mid point of circular arc R 1, and back drop takes place easily.Otherwise, the occasion of R1/D＞0.11, blower fan 6 is roomy with the gap of the mid point of circular arc R 1, leaks easily, and the refluence to the suction side might take place.

In addition, because of diffuser has obtained further expansion from R2 portion, so the occasion of R2/D＜0.14, diffuser sharply enlarges at R2 portion place, might cause peeling off of air-flow, the occasion of R2/D＞0.22, and the length of diffuser shortens, and might cause decrease in efficiency.

The pressure fan that is provided in the present embodiment 3, the diameter D of centrifugal blower 6 is set in the scope of 0.025≤R1/D≤0.11 and 0.14≤R2/D≤0.22 with the circular arc R 1 that constitutes tongue 9, the relation of R2, thus, can make shape be suitable for further high performance most, can realize having the high performance pressure fan of versatility.

(embodiment 4)

Fig. 5 is the major part enlarged drawing of the supply fan room 3 in the embodiments of the invention 4, and the front end of tongue 9 is formed by porous material 15.The characteristics of this tongue 9 are to be formed by porous material 15 under the situation of circular arc R 1, R2 of the tongue 9 in keeping embodiment 1.

In the present embodiment 4, use porous material 15, thus, can suppress near the pressure oscillation of the air the tongue 9, reduce noise.

Utilizability on the industry:

Air conditioner of the present invention, the tongue that consists of the diffuser of Blower Housing is made of 2 circular arcs at least, by This, the substantive length that can prolong diffuser further promotes the diffusion effect of the Blower Housing of pressure fan, Can realize more increasing static pressure and high performance wind pushing performance, the present invention is not limited to the air conditioner aspect, also can fit Be used for the various device of use centrifugal blower etc.

Claims (6)

1, a kind of air conditioner, be provided with the separated dividing plate of supply fan room and heat exchanger chamber being provided with suction portion and blowing out in the indoor unit of portion, the Blower Housing of centrifugal blower is housed in setting in supply fan room, have the motor that drives described centrifugal blower, it is characterized in that

The tongue that constitutes the diffuser of described Blower Housing is formed by 2 circular arcs at least.

2, air conditioner as claimed in claim 1 is characterized in that, the tangent line formed angle tangent with 2 circular arc both ends separately that constitute described tongue is the obtuse angle.

3, air conditioner as claimed in claim 1 is characterized in that, 2 circular arcs that constitute described tongue connect with curve.

4, air conditioner as claimed in claim 1 is characterized in that, the diffuser of described Blower Housing or tongue enlarge downstream gradually from the upstream.

5, air conditioner as claimed in claim 1 is characterized in that, the diameter D of described centrifugal blower is set in the scope of 0.025≤R1/D≤0.11,0.14≤R2/D≤0.22 with the circular arc R 1 that constitutes described tongue, the relation of R2.

6, air conditioner as claimed in claim 1 is characterized in that, described tongue uses porous material.

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