WO2017187227A1

WO2017187227A1 - Air conditioner

Info

Publication number: WO2017187227A1
Application number: PCT/IB2016/052364
Authority: WO
Inventors: 片山絵里香; 岩瀬拓; 関谷禎夫
Original assignee: ジョンソンコントロールズヒタチエアコンディショニングテクノロジー（ホンコン）リミテッド
Priority date: 2016-04-27
Filing date: 2016-04-27
Publication date: 2017-11-02

Abstract

An air conditioner, provided with an outdoor unit (90), the outdoor unit (90) being provided with a pair of fans (4), and a heat exchanger (3) constituted by bonding to each other a pair of half bodies (30a, 30b) having mutually symmetrical shapes and being arranged on the upstream side of the fans (4) so as to correspond to the respective fans (4). With the length of opposing portions (70) of the half bodies (30a, 30b) being L, and the area of the plan view of a gap (39) formed between the opposing portions (70) being S, the following relationship is satisfied: S/L²≥0.16.

Description

[Document Name 明細 Statement

[Name of the generator〗 Air conditioner

【Technical field】

[0 0 0 1]

The present invention relates to an air conditioner.

[Background]

[0 0 () 2]

Conventionally, as an outdoor unit of an air conditioner, a pair of fans arranged side by side and a pair of symmetrically arranged halves arranged on the lower side upstream of the fan to correspond to each fan There are known heat exchangers that are configured by joining together (see, for example, Patent Document 1 and Patent Document 2). This outdoor unit has a structure in which the heat exchanger portions forming the halves extend toward the front side at the center of the left and right sides of the heat exchanger where the halves are joined.

According to such an outdoor unit, by providing the extending portion, it is possible to increase the heat exchange surface of the heat exchanger without greatly changing the outer structure of the outdoor unit.

[Prior art documents]

[Patent Literature]

[0 0 0 3]

[Patent Document 1〗 JP 2 0 1 1-1 1 2 3 0 3

[Patent Literature 2〗 Patent No. 4 8 4 8 2 5 6 Publication

Summary of the Invention

[Problems to be solved by the invention]

[0 0 0 4]

However, in the conventional outdoor unit (for example, see Patent Document 1 and Patent Document 2), there is a problem that the heat exchange performance is not sufficiently improved to meet the increased heat exchange surface by providing the extending portion. .

[0 0 0 5]

Accordingly, an object of the present invention is to provide an air conditioner having an outdoor unit that is superior in heat exchange performance compared to the conventional art.

[Means for Solving the Problems]

[() [) () 6]

The air conditioner of the present invention that has solved the above problems is a pair of fans arranged side by side and a pair of symmetrical shapes arranged below the upstream side of the blower so as to correspond to each blower. A heat exchanger configured by bonding a pair of halves, each of the halves being first in a circumferential direction centered on the blower in a plan view seen from the corresponding blower side. A heat exchange section, a second heat exchange section, and a third heat exchange section, wherein the first heat exchange section and the third heat exchange section face each other and are joined by the third heat exchange sections, The length of the facing part between the halves on the heat exchange part side is L, and the area in plan view of the gap formed between the facing parts on the third heat exchange part side is S. In that case, it is characterized by having an outdoor unit that satisfies the following relational expression (1).

S / L ² ≥ 0. 1 6 ■ · ■ Formula (1)

【The invention's effect】

[0 0 0 7]

According to the present invention, there is provided an air conditioner having an outdoor unit that is superior in energy saving performance than before.

[Brief description of the drawings] [0 0 0 8] Fig. 1 is a configuration explanatory diagram of an air conditioner according to a first embodiment of the present invention.

【Figure 2

1 is an overall perspective view of an outdoor unit constituting an air conditioner according to a first embodiment of the present invention.

[Figure 3]

1 is a plan view of an outdoor unit constituting an air conditioner according to a first embodiment of the present invention.

[Figure 4]

FIG. 3 is an overall perspective view of an outdoor heat exchanger constituting the outdoor unit of FIG.

[Figure 5]

FIG. 5 is a plan view of an outdoor unit for explaining a first modification of a third heat exchange unit in the half of the outdoor heat exchanger of FIG.

[Figure 6]

FIG. 5 is a plan view of an outdoor unit for explaining a second modification of the third heat exchange section in the half of the outdoor heat exchanger of FIG.

[Figure 7]

FIG. 5 is an overall perspective view of an outdoor unit that constitutes an air conditioner according to a second embodiment of the present invention.

[Figure 8]

FIG. 8 is an overall perspective view of an outdoor heat exchanger constituting the outdoor unit of FIG.

9]

It is a top view of the outdoor unit which comprises the air conditioner which concerns on 2nd Embodiment of this invention.

[Fig. 10]

FIG. 9 is a plan view of an outdoor unit for describing a first modification of a third heat exchange unit in the half of the outdoor heat exchanger of FIG.

[Figure 丄]

Outdoor unit for explaining the second modification of the third heat exchange part in the half of the outdoor heat exchanger in Fig. 8 [Fig. 12]

The length of the facing part between the halves of the outdoor heat exchanger is L, and the gap formed between the facing parts is

FIG. 4 is a graph showing the relationship between the value of “S /: ² ” when the area in plan view is S and “the passing air speed (mZ s) of the outdoor heat exchanger”.

[Figure 1 3]

The value of `` GZ L '' when the length of the facing part between the halves of the outdoor heat exchanger is L and the width of the gap formed between the facing parts at the end of the facing part is G FIG. 6 is a graph showing a relationship with the value of “opposed portion exchange heat amount Z overall exchange heat amount” per unit area of the heat exchange surface of the outdoor heat exchanger.

BEST MODE FOR CARRYING OUT THE INVENTION

[0 0 0 9]

Next, the present invention will be described in detail with reference to the drawings as appropriate for the embodiment.

In the air conditioner of the present invention, the area of the gap formed between the facing parts of the half of the heat exchanger configured by joining a pair of halves is S, and the length of the facing part The main feature is that it has an outdoor unit that satisfies the following relational expression (1) when L is L.

S / L ² ≥ 0.16 '''formula (丄)

Hereinafter, the present invention will be described in detail based on the first and second embodiments of the present invention.

[0 0 1 0]

(First embodiment)

Here, after describing the overall configuration of the air conditioner according to the first embodiment of the present invention, an outdoor unit constituting the air conditioner will be described. [0 0 1 丄]

FIG. 1 is a configuration explanatory diagram of an air conditioner 100 according to the present embodiment.

As shown in FIG. 1, the air conditioner 100 has an indoor unit 9 1 and an outdoor unit 90, and the indoor unit 9 1 and the outdoor unit 90 are connected via a pipe 10. ing. Incidentally, in the air conditioner 100 according to the present embodiment, two indoor units 91 are connected in parallel by a pipe 10. In the air conditioner 100 according to the present embodiment, it is assumed that the indoor units 91 are individually arranged in the two rooms, but the present invention is not limited to this. Indoor unit 9 1 can be one or more. When the indoor unit 9 機 is 3 or more, each indoor unit 9 丄 is connected in parallel through the pipe 10.

[0 0 1 2]

The indoor unit 9 1 includes an indoor heat exchanger 7 and an indoor expansion valve 8.

The outdoor unit 90 includes a compressor 1, a four-way valve 2, an outdoor expansion valve 6, an outdoor heat exchanger 3, and an accumulator 5.

In FIG. 1, reference numeral 4 is an outdoor blower that sends outside air to the outdoor heat exchanger 3, and reference numeral 9 is an indoor blower that sends indoor air to the indoor heat exchanger 7. Reference numerals 15 and 16 are pipe connection ports for connecting the pipe 10 to the outdoor unit 90.

[0 0 1 3]

This air conditioner 1 0 0 has a cooling operation in which the indoor heat exchanger 7 is used as an evaporator and the outdoor heat exchanger 3 as a condenser by switching the four-way valve 2, and the indoor heat exchanger 7 is used as a condenser and an outdoor unit. This is a heat pump type that performs heating operation using the heat exchanger 3 as an evaporator. Note that the switching state of the four-way valve 2 shown in FIG. 1 is that during cooling operation. In FIG. 1, the solid line arrow X indicates the refrigerant circulation direction during the cooling operation, and the broken line arrow Y indicates the refrigerant circulation direction during the heating operation.

[0 0 1 4]

For example, in the air conditioner 10 0 during cooling operation, the high-temperature and high-pressure refrigerant compressed by the compressor: [passes through the four-way valve 2 and flows into the outdoor heat exchanger 3 to exchange heat with air. The heat dissipates and condenses. Thereafter, the refrigerant isentropically expanded by the outdoor expansion valve 6 and becomes a gas-liquid two-phase flow in which a gas refrigerant and a liquid refrigerant are mixed at a low temperature and a low pressure. This gas-liquid two-phase flow of the refrigerant flows into the pipe 10 through the pipe connection port 15. Thereafter, the refrigerant flows into the indoor heat exchanger 7 through the indoor expansion valve 8 in each indoor unit 91.

[0 0 1 5]

At this time, the indoor expansion unit 8 adjusts the flow rate of the refrigerant flowing into the indoor heat exchanger 7. Then, the liquid refrigerant in the indoor heat exchanger 7 is vaporized into a gas refrigerant by an endothermic action from the air. In other words, when the liquid refrigerant is vaporized, the indoor heat exchanger 7 cools the surrounding air, so that the air conditioner 100 exhibits a cooling function. Next, the refrigerant that has exited each indoor heat exchanger 7 flows into the pipe 10. Thereafter, the refrigerant returns to the compressor 1 through the pipe connection port 16 and the accumulator 5. The refrigerant that has returned to the compressor 1 is compressed again to a high temperature and a high pressure, and circulates through the four-way valve 2, the outdoor heat exchanger 3, the indoor expansion valve 8, and the indoor heat exchanger 7. In other words, this cycle is repeated to form a frozen site.

[0 0 1 6]

Next, the indoor unit 91 will be described in more detail.

FIG. 2 is an overall perspective view of the outdoor unit 90 constituting the air conditioner 100 according to the present embodiment. Note that the front-rear, upper-left and right-left directions of the outdoor unit 90 in the present embodiment are based on the front-rear, top-bottom, left-right directions shown in FIG. 2 when the outdoor unit 90 is installed.

[0 0 1 7]

As shown in FIG. 2, the outdoor unit 90 has a substantially rectangular parallelepiped outer shape. The outdoor unit 90 includes a rectangular base member 丄 2 in a plan view, four support frames 11 1 erected on each of the squares of the base member 12, and the inside of the four support frames 11. The base member: an outdoor heat exchanger 3 disposed on L 2, and an outdoor fan 4 disposed above the outdoor heat exchanger 3.

[0 0 1 8]

The support frame 11 is L-shaped when viewed from the side (see FIG. 5), and is arranged so that the outer corner of the L-shape corresponds to the corner of the base member 12.

Although not shown, the outdoor heat exchanger 3 is arranged in a plurality such that heat radiation fins composed of elongated rectangular plates extending in the vertical direction are stacked in the outer peripheral direction of the outdoor unit 90, and the plurality of heat radiation fins are arranged. A plurality of refrigerant tubes are provided so as to penetrate and connect.

[0 0 1 9]

Such an outdoor heat exchanger 3 is exposed on four side surfaces of the substantially rectangular parallelepiped outdoor unit 90. The outdoor heat exchanger 3 forms a substantially cylindrical body having an inner space in cooperation with the panel 31 arranged on the front surface of the outdoor unit 90.

The outdoor heat exchanger 3 will be described in detail later.

[0 0 2 0]

An outdoor fan 4 is disposed above the outdoor heat exchanger 3.

The outdoor blower 4 is formed inside the outdoor heat exchanger 3, and is configured to discharge air from the compressor: [inside space 50 (see FIG. 3) in which etc. are arranged to the outside of the outdoor unit 90. ing. In other words, the driven outdoor blower 4 draws outside air into the outdoor unit 90 from between the heat radiation fins (not shown) of the outdoor heat exchanger 3 exposed on the three side surfaces of the outdoor unit 90, and this sucked air To the outside of the outdoor unit 90.

[0 0 2 ;!]

The outdoor unit 90 of the present embodiment includes two outdoor blowers 4a and 4b. These outdoor fans 4 a and 4 b are arranged side by side (side by side). In the following description, the two outdoor fans 4 a and 4 b are simply referred to as outdoor fans 4 unless they are particularly distinguished.

[0 0 2 2]

The outdoor blower 4 is provided with a plow fan fan 41, a motor (not shown) for rotating the plow fan fan 41, and a bell mouth 43 covering the periphery of the propeller fan 41. Each of the propeller fans 4 1 a and the propeller fan 4 lb of the outdoor blower 4 a and the outdoor blower 4 b are designed to rotate counterclockwise (counterclockwise) when viewed from above. The propeller fan 4 1 _a and the propeller fan 4 1 b that rotate in this way allow air to flow from the inner space 50 (see FIG. 3) formed inside the outdoor heat exchanger 3 as described above. It is sent out to the outside.

[0 0 2 3]

The bellmouth 4 3 is a cylindrical body. Specifically, the bell mouth 43 is formed in a substantially cylindrical shape that gradually decreases in diameter from the lower part on the inner space side to the upper part.

Although not shown, the top plate 13 to be disposed between the bell mouth 43 and the outdoor heat exchanger 3 has a circular opening having an outer diameter substantially equal to the inner diameter of the lower portion of the bell mouth 43. Is formed. Through the circular opening, the inner space communicates with the inner side of the bell mouth 43. In addition, a motor support frame (not shown) is spanned in the radial direction of the circular opening.

'

[0 0 2 4]

In FIG. 2, reference numeral 3 3 denotes an electric box. The electric box 33 is provided with a control device that generally controls the air conditioner 100. This electrical box 3 3 has a panel 3 near the top 1 3 It is arranged along the rear side of 1. That is, the electrical box 33 is disposed close to the panel 31. Reference numeral 4 4 is a casing.

[0 0 2 5]

Next, the outdoor heat exchanger 3 constituting the outdoor unit 90 will be described in more detail.

The outdoor heat exchanger 3 is disposed on the upstream side of the outdoor blower 4.

FIG. 3 is a plan view of the outdoor unit 90 for explaining the third heat exchange part 3 c in the left 30 a and the right half 30 b of the outdoor heat exchanger 3. In Fig. 3, the description of the outdoor unit 90's casing 4 4, the top plate 1 3, the compressor 1 and the electrical box 3 3 is omitted for the sake of drawing. In FIG. 3, the outdoor blower 4 is not equal to the outer diameter of the propeller fan 41 in a virtual line (broken line).

FIG. 4 is an overall perspective view of the outdoor heat exchanger 3 constituting the outdoor unit 90.

[0 0 2 6]

As shown in FIG. 3, the outdoor heat exchanger 3 is configured by integrally joining a left half 30 a and a right half 30 b.

Note that the left half 30 a and the right half 30 b correspond to the “half” in the claims. The left half 30 a and the right half 30 b are provided so as to correspond to the left and right outdoor fans 4 a and 4 b.

[0 0 2 7]

The left half 30 and the right half 30 are formed symmetrically. Specifically, the left half 30 a and the right half 30 b are based on the central axis 60 (see FIG. 3) of the outdoor unit 90 extending in the front-rear direction of the outdoor unit 90 in plan view. It is formed so as to be line symmetrical.

[0 0 2 8]

The left half 30 a and the right half 30 b are the first heat exchange unit 3 a disposed on the side surface of the outdoor unit 90

A second heat exchange unit 3b disposed on the back surface of the outdoor unit 90; and a third heat exchange unit 3c disposed so as to face the first heat exchange unit 3a. That is, each of the left half 30a and the right half 30b has a first heat exchange part 3a and a second heat exchange part 3 in the circumferential direction around the outdoor fans 4a and 4b, respectively. b and the third heat exchange part 3 c are arranged in this order. The first heat exchange unit 3a and the third heat exchange unit 3c are opposed to each other.

[0 0 2 9]

That is, each of the left half 30 a and the right half 30 b includes a first heat exchanging portion 3 a extending from the side to the back, a second heat exchanging portion 3 b extending in the left-right direction of the back, A third heat exchanging portion 3c extending from the left and right central portion of the back side toward the front side is provided. And the 3rd heat exchange part 3c has the edge part 71 on the opposite side to the 2nd heat exchange part 3b side.

[0 0 3 0]

Incidentally, the second heat exchanging part 3b in the present embodiment is defined by a part extending linearly in the left-right direction on the back surface of the outdoor unit 90. Further, the first heat exchange part 3a and the third heat exchange part 3c are a part extending linearly in the front-rear direction of the outdoor unit 90, and a curved part connected to the second heat exchange part 3b (circle Arc-shaped portion).

[() () 3 1]

The outdoor heat exchanger 3 is formed by integrally joining a left half 30 a and a right half 30 b through a connecting pillar 40. The left half 30 a and the right half 30 b have opposing portions 70 that face each other on the third heat exchange portion 3 c side.

The facing portion 70 in this embodiment is formed by the third heat exchange portion 3c described above, and is connected to the portion extending linearly in the front-rear direction of the outdoor unit 9 () and to the second heat exchange portion 3b. It consists of a curved part (arc-shaped part).

Further, the straight portions in the facing portion 70 of the left half 30 a and the right half 30 b are parallel to each other, and the parallel portions P are preferably parallel to each other. [0 0 3 2]

Since the outdoor unit 90 has such a parallel part P, it is possible to increase the heat exchange surface of the outdoor heat exchanger 3 while ensuring a large inner space 50.

[0 0 3 3]

As shown in FIG. 4, the connecting pillar 40 is vertically connected between the third heat exchanging part 3 c in the left half 3 () a and the third heat exchanging part 3 c in the right half 30 b. Extends in the direction.

The connecting pillar 40 maintains the minimum width of the gap 39 formed between the facing portion 70 in the left half 30 a and the facing portion 70 in the right half 30 b, The left half 30a and the right half 30b are connected together.

[() () 3 4]

Further, the connecting pillar 40 has a gap 39 formed between the third heat exchanging part 3c in the left half 30a and the third heat exchanging part 3c in the right half 30b. By blocking it, the outside air is prevented from entering the outdoor unit 90 directly from the gap 39. The connecting pillar 40 in this embodiment is formed of a plate-like body.

Incidentally, the lower end portion of the connecting pillar 40 is fixed to the base portion 12 (see FIG. 2), and the upper end portion of the connecting pillar 40 is fixed to the top plate 13 (see FIG. 2).

[0 0 3 5]

As shown in Fig. 3, between the end of the first heat exchange part 3a in the left half #: 30a and the end of the first heat exchange part 3a in the right half 30b Service space 3 1 a is secured. The opening constituting the service space 3 1 a faces the inner space 50 of the outdoor heat exchanger 3.

[0 0 3 6]

This service space 3 1 a is arranged in the inner space 50 of the outdoor heat exchanger 3, and various types such as an electric box 3 3 (see Fig. 2) and a compressor 1 (see Fig. 2) in which a control board and the like are accommodated. Enable access to refrigeration cycle components (eg maintenance).

Panel 3 1 (see Fig. 2) is attached to this service space 3 1 a so as to close it.

[0 0 3 7]

Returning to FIG. 3 again, the outdoor heat exchanger 3 forms a substantially cylindrical body having an inner space in cooperation with the panel 31 provided on the front surface of the outdoor unit 90 as described above. .

The third heat exchanging part 3c in the left half 30a and right half 30b has the tip part extending from the rear side of the outdoor unit 90 toward the front side, and the propeller fan 4 1a, 4 It is placed outside the turning radius of 1b.

The gap 3 9 is formed between the opposing portions 70 of the left half 30 a and the right 30 b. The width of the gap 39 is formed so as to gradually narrow from the rear side of the outdoor unit 90 toward the front side.

[() () 3 8]

In the outdoor unit 90 in this embodiment, the length in the front-rear direction of the facing portion 70 of the left half 30 a and the right half 30 b is L, and the area of the gap 39 in plan view is When S is set, the following relational expression (1) is satisfied.

S /. L ² ≥ 0. 1 6 '''Equation (1)

[0 0 3 9]

In addition, the outdoor unit 90 in the present embodiment satisfies the following relational expression (2) when the width of the gap 39 at the end 71 of the third heat exchange unit 3c is G. It has become.

G / L≥ 0. 1 7 '… Formula (2)

(In the above formula, L has the same meaning as L in the above formula (1)). [0 0 4 0]

The air conditioner 100 including the outdoor unit 90 described above can achieve the following operational effects, and the conventional air conditioner including the outdoor unit (see, for example, Patent Document 1 and Patent Document 2) By providing the direction portion 70, the heat exchange surface of the heat exchanger can be increased without greatly changing the configuration of the outer shape of the outdoor unit 90.

[0 0 4 1]

The outdoor unit 90 passes through the facing part 70 by setting the area S of the gap 39 and the length L of the facing part 70 so as to satisfy the above formula (1). The flow rate of the outside air can be brought close to the flow rate of the outside air passing through the whole outdoor heat exchanger 3 (the whole including the opposing portion 70). In other words, it is possible to make the outdoor air passage speed distribution in the circumferential direction of the outdoor heat exchanger 3 uniform.

Therefore, according to the air conditioner 100 including the outdoor unit 90 of the present embodiment, it is possible to provide the air conditioner 100 having the outdoor unit 90 superior in heat exchange performance than the conventional one.

[0 0 4 2]

In addition, the outdoor unit sets the area S of the gap 39 and the width G of the gap 39 at the end 71 so as to satisfy the formula (2). The amount of heat exchange per unit area on the exchange surface can be brought close to the amount of heat exchange per unit area in the entire outdoor heat exchanger 3 (the whole including the opposing portion 70). That is, according to the air conditioner 1 () () including the outdoor unit 90 of the present embodiment, the amount of heat exchange in the facing portion 7 () can be improved.

[0 0 4 3]

Although the first embodiment has been described above, the present invention is not limited to the first embodiment, and can be implemented in various forms.

In the sixth embodiment, the third heat exchanging part 3 c of the left half ^ 30 a and the third heat exchanging part 3 c of the right half 30 b form an arcuate part and a parallel part P However, the present invention is not limited to this. In other words, the third heat exchange section 3c of the left half 30a and the right half 30b is such that the width of the gap 39 gradually decreases from the rear side of the outdoor unit 90 toward the front side. What is necessary is just to be formed.

[0 0 4 4]

FIG. 5 is a plan view of the outdoor unit for explaining a first modification of the third heat exchange section 3 c in the left 30 a and the right half 30 b of the outdoor heat exchanger 3. FIG. 6 is a plan view of the outdoor unit for describing a second modification of the third heat exchange section 3 c in the left half 30 a and the right half 30 b of the outdoor heat exchanger 3.

[0 0 4 5]

As shown in FIG. 5, the third heat exchanging portion 3c has a tapered shape formed so as to be gradually closer to each other by inclining at a predetermined angle toward the end portion 71 in a plan view. It can also be. According to such a first modification, the outdoor heat exchanger 3 having the gap 39 satisfying the expressions (1) and (2) can be easily formed by bending or the like.

[0 0 4 6]

In addition, as shown in FIG. 6, the third heat exchanging portion 3c may be configured to have an arc shape in plan view.

According to such a second modification, the area S of the gap 39 with respect to the length L of the facing portion 70 can be set larger. According to the outdoor heat exchanger 3 having such a third heat exchanging portion 3c, the outdoor air passage speed distribution and the heat exchange amount in the circumferential direction of the facing portion 70 can be made more uniform.

[0 0 4 7] (Second embodiment)

Next, an air conditioner 100 (see FIG. 1) according to the second embodiment of the present invention will be described. The air conditioner I 0 () according to the second embodiment is different from the air conditioner 100 according to the first embodiment only in the outdoor unit 9 0 (see FIG. 1). Only 0 will be explained. Note that, in the second embodiment of the present invention, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0 0 4 8]

FIG. 7 referred to below is an overall perspective view of the outdoor unit 90 constituting the air conditioner 100 according to the second embodiment. FIG. 8 is an overall perspective view of the outdoor heat exchanger 3 constituting the outdoor unit 90 of FIG. FIG. 9 is a plan view of the outdoor unit 90.

[0 0 4 9]

As shown in FIG. 7, the outdoor unit 90 in the second embodiment is different from the outdoor unit 90 (see FIG. 2) in the first embodiment in the outdoor heat exchanger 3 and the panel 31. Yes.

In FIG. 7, 4, 4 a, 4 b are outdoor fans, reference numeral 1 1 is a support frame, reference numeral 1 2 is a base member, reference numeral 1 3 is a top plate, reference numeral 4 1, 4 1 a, 4 1 b are propeller fans, and 4 4 is a casing.

[0 0 5 1]

As shown in FIG. 8, the outdoor heat exchanger 3 in the second embodiment is the same as that in the first embodiment in that the first heat exchange unit 3a has a fourth heat exchange unit 3a '. Different from outdoor heat exchanger 3 (see Fig. 4)

Specifically, the left half 30 a of the outdoor heat exchanger 3 includes a fourth heat exchange section 3 a ′ disposed on the front side, a first heat exchange section 3 a disposed on the left side, and a rear A second heat exchanging part 3 b arranged on the side, and a third heat exchanging part c arranged so as to face the first heat exchanging part 3 a. The second heat exchange part 3 b and the fourth heat exchange part 3 a ′ are opposed to each other.

[0 0 5 2]

The right half 30 b of the outdoor heat exchanger 3 is arranged on the rear side with the fourth heat exchange part 3 a ′ arranged on the front side, the first heat exchange part 3 a arranged on the right side surface, and the rear side. The second heat exchanging part 3b and the third heat exchanging part c arranged so as to face the first heat exchanging part 3a are provided. The second heat exchanging part 3 b and the fourth heat exchanging part 3 a ″ are opposed to each other.

[0 0 5 3]

Then, from the front fourth heat exchanging part 3 a ′ to the side first heat exchanging part 3 a in the left half 30 a and the right half 30 b, each other is passed through the R part having a predetermined curvature. Bent to form an interior angle of 0 degrees.

In FIG. 8, reference numeral 38 denotes a side plate, reference numeral 39 denotes a gap, and reference numeral 40 denotes a connecting blade.

[0 0 5 4]

As shown in FIG. 9, the left half #; 30a and the right half 30b are respectively connected to the fourth heat exchange section 3a 'on the front, rear, left and right with the outdoor fans 4a and 4b as the center. The second heat exchanging part 3 b faces, and the first heat exchanging part 3 a and the third heat exchanging part 3 c face each other. Therefore, each of the left half 30 a and the right half 30 b is a four-sided heat exchanger having a third heat exchange part 3 c in the rear center part from the fourth heat exchange part 3 a ′ in the front side. It has become.

[0 0 5 5]

In such a left half 30 a and a right half 30 b, the length in the left-right direction of the fourth heat exchange part 3 a ′ is shorter than the length in the left-right direction of the second heat exchange part 3 b.

Therefore, there is a gap between the end of the fourth heat exchanging part 3 &'opening in the left half 30 a and the end of the fourth heat exchanging part 3 a' in the right half 3 Ob. A screw space 3 I a is formed. The panel 3 1 is attached to the service space 3 1 a. [0 0 5 6]

Such an outdoor heat exchanger 3 in the present embodiment is similar to the outdoor heat exchanger 3 (see FIG. 3) in the first embodiment described above, and includes a panel 31 provided on the front surface of the outdoor unit 90. Together, they form a generally cylindrical shape with an inner space.

The aforementioned gap 39 is formed between the opposing portions 70 of the left half 30 a and the right half 30 b. The width of the gap 39 is formed so as to gradually narrow from the rear side of the outdoor unit 90 toward the front side.

[0 0 5 7]

Also in the second embodiment, as in the first embodiment, the outdoor unit 90 has the length in the front-rear direction of the facing part 70 of the left half 3 () a and the right half 30 b. However, when the area of the gap 39 in plan view is S, the following relational expression (1) is satisfied.

S / L ² ≥ 0.16 '''formula (:!)

[0 0 5 8]

In addition, the outdoor unit 90 in the present embodiment has a width of the gap 39 at the end portion 71 of the third heat exchange unit 3c.

When G is set, the following relational expression (2) is satisfied.

G / L≥ 0.17 '' 'Formula (2)

(In the above formula, this is synonymous with L in the formula (1)).

[0 0 5 9]

The air conditioner 100 according to the second embodiment including the outdoor unit 90 described above is the same as the air conditioner 100 according to the first embodiment including the outdoor unit 90 (see FIG. 2) (see FIG. 1). As well as the following effects.

[0 0 6 0]

Further, according to this outdoor unit 90, the first heat exchange unit 3a, the second heat exchange unit 3b, the third heat exchange unit

Since the four surfaces of 3 c and the fourth heat exchange part 3 a ′ are arranged along the outer periphery of the outdoor unit 90, the heat transfer performance of the outdoor heat exchanger 3 can be improved. As a result, the ventilation resistance of the outdoor heat exchanger 3 can be reduced without increasing the size of the outdoor unit 90. Therefore, the air conditioner has excellent energy saving performance and can achieve compactness. Can be provided.

[() () 6 1]

Next reference figure: L 0 is a plan view of the outdoor unit for explaining a first modification of the third heat exchange section in the half #; of the outdoor heat exchanger of FIG. FIG. 9] is a plan view of an outdoor unit for explaining a second modification of the third heat exchange part in the half of the outdoor heat exchanger of FIG.

[0 0 6 2]

As shown in FIG. 10, the third heat exchanging portion 3c has a taper shape formed so as to be gradually closer to each other by inclining at a predetermined angle toward the end portion 71 in plan view. It is also possible to adopt a configuration with According to such a first modified example, the outdoor heat exchanger 3 having the gap 39 satisfying the expressions (1) and (2) can be easily formed by bending or the like. .

[0 0 6 3]

Further, as shown in FIG. 11, the third heat exchanging portion 3c may be configured to have an arc shape in plan view.

【Example】

[0 0 6 4]

Next, the Example which verified the effect of the air conditioner of this invention is described.

In the following examples, an empty unit having the outdoor unit 90 (see FIG. 7) according to the second embodiment described above is used. Work on the air conditioner l oo (see Figure IV); The β effect was verified.

(Example 丄)

In the present embodiment, the relationship between “the outdoor air exchanger 3 passing air speed (ra) J” with respect to the value of “S / Shi ² ” in the five outdoor heat exchangers 3 from No. 1 to No. 5 After completing the S ^ experiment with CAE (Computer Aided Engineering)

[0065]

Fig. 1 2 shows a plan view of the gap 39 formed between the facing portions 70, where L is the length of the facing portion 70 between the left half 30a and the right half 30b of the outdoor heat exchanger 3. When the area at S is S, the value of rs / L ² j and the `` air flow rate of outdoor heat exchanger 3 (m / s) J

[0066]

In FIG. 12, “◯” indicates the average value of the passing air speed (outside air passing speed) [m / s] in the whole outdoor heat exchanger 3 (the whole including the facing portion 70). The “A” mark is the average value of the passing wind speed (outside air passing speed) [mZs] across the two opposing portions 70.

By the way, as the passing air speed of the facing part 70 (indicated by “▲” in FIG. 12) approaches the overall passing air speed of the outdoor heat exchanger 3 (indicated by “◯” in FIG. 12), the outdoor This shows that the wind speed distribution in the circumferential direction of the heat exchanger 3 becomes uniform.

[0067]

As shown in Fig. 12, when the value of rs / L ² J is smaller than 0.16, the passing wind speed of the facing section 70 is lower than about 70% of the total passing wind speed of the outdoor heat exchanger 3. (See o. 1 in Fig. 12). On the other hand, when the value of iS / L ² J is 0.16 or more, the passing air speed of the facing portion 70 is about 80% or more of the entire passing air speed of the outdoor heat exchanger 3.

In other words, it was verified that the wind speed distribution in the circumferential direction of the outdoor heat exchanger 3 was made uniform by setting the value of “SZL ² ” to 0.16 or more.

[0068]

(Example 2)

In the present embodiment, the “opposing part replacement per unit area of the heat exchange surface of the outdoor heat exchanger 3 with respect to the value of G / Lj in the five outdoor heat exchangers 3 from No. 6 to No. 10” The relationship between the value of “total amount of heat Z! ¾ amount” was obtained through a simulation test by CAE (Computer Aided Engineering).

[0069]

Fig. 3 shows that the length of the facing portion 70 between the left half 30a and the right half 30b of the outdoor heat exchanger 3 is L, and the width of the gap 39 at the end 71 of the facing portion 70 is G. 4 is a graph showing the relationship between the value of “GZL” and the value of “opposed portion exchange heat amount 7 total exchange heat amount” per unit area of the heat exchange surface of the outdoor heat exchanger 3 in the case where

[00 70]

As shown in Fig. 1-3, with No. 8 outdoor heat exchanger 3 with a G / L value of 0.17, No. 6 and No. 7 outdoor heat exchanger 3 The value of the “opposite part exchange heat amount Z total exchange heat amount” is rapidly decreasing.

In other words, it was verified that the amount of heat exchanged in the circumferential direction of the outdoor heat exchanger 3 was made uniform by setting the value of rG / Lj to 0.17 or more.

[Explanation of symbols]

[00 71]

1 Compressor

2 Four-way valve

3 Outdoor heat exchanger a 1st heat exchange part b 2nd heat exchange part c 3rd heat exchange part Outdoor blower a Outdoor blower b Outdoor blower

/ Kyu Λ leg outdoor expansion valve indoor heat exchanger indoor 3 彭 ¾¾ valve

0 Piping

1 Support frame 2 Base member

3 Top plate

5 Piping connection port

0 a left half

0 b right half

1

1 a service space 3 electric box

9 Gap

0 articulated pillar

1 Puffer fan 1 a Propeller fan I b Huffman 3 Bermaus

Casing inner space Central axis

Opposing part

1

Outermost fence

1 Indoor unit

0 Air conditioner

Parallel part

Claims

[Document name〗 Claims

[Claim I]

A pair of fans arranged side by side;

A heat exchanger that is arranged on the lower side on the upstream side of the blower so as to correspond to each blower, and is configured by joining a pair of halves that are symmetrical to each other.

Each of the halves has a first heat exchange part, a second heat exchange part, and a third heat exchange part in a circumferential direction centering on the blower, as viewed from the corresponding blower side,

The first heat exchange part and the third heat exchange part face each other and are joined by the third heat exchange parts;

The length of the facing part between the halves on the third heat exchange part side is L,

An outdoor unit that satisfies the following relational expression (1) when the area of the gap formed between the facing parts on the third heat exchange part side in a plan view is S: A featured air conditioner.

S / L ² ≥ 0. 1 6 ■ · ■ Formula (1)

[Claim 2]

In the air conditioner according to claim 1,

The third heat exchange part has an end of the heat exchanger on the opposite side of the second heat exchange part, and the third heat exchange parts include a parallel part on the end side. An air conditioner that specializes in that.

[Claim 3]

In the air conditioner according to claim 1,

The third heat exchange part has an end of the heat exchanger on the opposite side of the second heat exchange part, and a gap formed between the facing parts on the third heat exchange part side The width of is gradually narrowed toward the end,

An air conditioner that satisfies the following relational expression (2), where G is the width of the gap at the end.

G / L≥ 0.17 '' 'Formula (2)

(In the above formula, this is synonymous with L in the formula (1)).

[Claim 4]

In the air conditioner according to claim 1,

The air conditioner is characterized in that the third heat exchanging portion has a tapered shape formed so as to incline at a predetermined angle toward the end portions in plan view and gradually approach each other.

[Claim 5]

In the air conditioner according to claim 1,

The air conditioner is characterized in that the third heat exchange part has an arc shape in a plan view.