WO2005052457A1

WO2005052457A1 - Air conditioner

Info

Publication number: WO2005052457A1
Application number: PCT/JP2004/017494
Authority: WO
Inventors: Akira Terasaki; Hideharu Unno
Original assignee: Advanced Air-Conditioning Reseatch And Development Center Co., Ltd.; Sanyo Electric Co., Ltd.; Toshiba Carrier Corporation
Priority date: 2003-11-28
Filing date: 2004-11-25
Publication date: 2005-06-09
Also published as: JP2005164074A

Abstract

The interior of a unit main body (1) is partitioned by a partition plate (6). A blowing device (S) is disposed in a blowing chamber (A) and a heat exchanger (5) is disposed in a heat exchange chamber (B), with a drain receiver (7) being disposed below the heat exchanger (5). The bottom (7a) of the drain receiver (7) consists of a first step (X) disposed on the heat exchange air lead-out side of the heat exchanger (5), a second step (Y) which is disposed on the heat exchange air upstream side of the first step (X) and on which the lower end of the heat exchanger (5) is directly placed, and a third step (Z) disposed on the heat exchange air upstream side of the second step (Y), these steps being continuous with each other. The second step (Y) is formed to be lower than the first step (X) and higher than the third step (Z).

Description

Technical field

The present invention relates to, for example, an air conditioner that is an indoor unit of a ceiling suspension type and has an improved drain receiver that receives drain water that also drip heat exchange.

Background art

[0002] In an air conditioner composed of an indoor unit and an outdoor unit, a so-called wall light

The wall force is similar to that of a ceiling-shaped indoor unit.

Air conditioners equipped with ceiling-mounted indoor units that are mounted in a state that does not give a feeling of oppression are often used.

[0003] In this type of indoor unit, there is a demand to reduce the dimension in the thickness direction (height direction) of the unit main body, which is a housing, as much as possible to make the shape with less pressure, but on the other hand, in the width direction (Horizontal direction) has relatively few dimensional restrictions. Therefore, the heat exchange air is blown out from a wide area along the ceiling surface to improve the efficiency of the heat exchange action.

[0004] In order to secure a necessary heat exchange area and restrict the height dimension as much as possible, for example, as shown in Japanese Patent Application Laid-Open No. The side force is inclined at a predetermined inclination angle toward the outlet side of the unit body. A drain pan (drain receiver) made of expanded polystyrene is provided at a lower portion of the indoor heat exchanger to receive drain water that also drops the power of the indoor heat exchanger with the refrigeration cycle operation.

Disclosure of the invention

[0005] In JP-A-11-101462 described above, a drain pump is attached to the drain pan portion between the blower and indoor heat exchange! /, And the drain water collected in the drain pan is sucked up. To be discharged outside the air conditioner body. Therefore, the cross-sectional shape of the bottom of the drain pan is gradually inclined so that the heat exchange air outlet side (secondary side) of the indoor heat exchanger is higher and the heat pump air inlet side (primary side), the drain pump mounting side, is lower. RU

[0006] In recent years, there has been a demand for a thinner unit by minimizing the height of the unit body as much as possible. Therefore, while the inclination angle of the indoor heat exchange becomes larger, the inclination angle from the secondary side to the primary side of the drain pan bottom is formed smaller. Therefore, when the amount of drain water generated is large, the drain water also accumulates on the secondary side of the indoor heat exchanger.

[0007] In the above-described drain pan, there is a possibility that drain water remaining on the secondary side is blown off by heat exchange air that passes through the indoor heat exchanger and is led to the secondary side. In this case, the water exchange of the drain water mixes with the heat exchange air blown into the blower loca- tion room provided in the secondary side direction, and scatters into the room, thereby impairing comfort.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drain receiving structure in which drain water does not blow out and the loca- tion is not blown out, thereby improving comfort. The aim is to provide an air conditioner that obtains the following.

The present invention has been made in order to satisfy the above-mentioned object, and the unit main body is divided into a ventilation chamber and a heat exchange chamber by a partition plate, and a suction port is provided on the ventilation chamber side to perform heat exchange. A blower is provided on the room side, and a blower is installed in the blower room that sucks heat exchange air from the inlet through the partition plate, blows it to the heat exchange room through the partition plate, and blows air into the room through the blower outlet. A heat exchanger that exchanges heat by conducting the heat exchange air that is blown is placed, and a drain receiver that receives drain water generated during the refrigeration cycle operation is placed below the heat exchanger. The bottom is a first stage provided on the heat exchange air outlet side of the heat exchanger and the lower end of the heat exchanger installed directly upstream of the heat exchange air on the first stage. A second step portion and a heat exchange air upstream side of the second step portion. And a third step portion provided, the second step portion is higher is formed than the low ingredients third stepped portion than the first step portion.

Brief Description of Drawings

FIG. 1 is a perspective view of an indoor unit constituting an air conditioner according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the indoor unit according to the embodiment.

FIG. 3 is a bottom view of the internal structure of the indoor unit according to the embodiment.

FIG. 4 is an exploded perspective view of the indoor unit according to the embodiment.

FIG. 5 is a cross-sectional view of a part of the indoor unit according to the embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

[0011] Fig. 1 is an overall perspective view of an indoor unit constituting an air conditioner, Fig. 2 is a cross-sectional view of the indoor unit, Fig. 3 is a bottom view showing an internal structure of the indoor unit, and Fig. 4 is an exploded view of the indoor unit. FIG. 5 is a perspective view, and FIG. 5 is a sectional view of one side of the indoor unit.

[0012] In the figure, reference numeral 1 denotes a unit main body, which is hooked on a suspension bolt suspended from a ceiling (not shown) and is mounted in a state very close to the ceiling surface. One of the features of this unit body 1 is that the width direction (horizontal direction) is much larger than the thickness direction (height direction).

[0013] The unit body 1 connects the bottom plate la constituting the lower surface, the top plate lb constituting the upper surface adjacent to the ceiling in a suspended state, and the bottom plate la and the top plate lb. It is composed of a pair of left and right side plate parts lc and a back part Id. Only the side plate lc is covered with the side cover le.

[0014] The bottom plate portion la is provided with a suction port 2 in which the grill 10 and the filter 11 are removably fitted along the width direction at about a half of the front-rear direction orthogonal to the width direction of the bottom plate portion la. Can be The front part opposite to the rear part Id is an outlet 3 to which a horizontal louver 13 is attached to be able to open and close, and a vertical louver 12 is rotatable further to the back of the horizontal louver 13 at the outlet 3. Mounted on

[0015] A partition plate 6 is provided inside the unit main body 1. The partition plate 6 is erected along one side edge of the suction port 2 into which the grill 10 described above is fitted, and is extended so as to abut on the top plate lb of the unit body 1. Further, since the partition plate 6 is extended so as to abut on the left and right side plate portions lc constituting the unit body 1, the inside of the unit body 1 is partitioned into two chambers A and B in the front-rear direction by the partition plate 6. Will be.

The inside of the unit body 1 has a blower chamber A in which a blower S and an electric component box 15 for driving and controlling the blower S are arranged and housed on the side of the suction port 2 with the partition plate 6 interposed therebetween, and an outlet 3. On the side, a heat exchange chamber B in which the indoor heat exchanger 5 is accommodated is formed.

The blower S has a fan motor 16 which is a so-called two-axis motor, which is fixedly supported by a motor fixing device 19 attached to the top plate lb, and has a rotating shaft 18 projecting from both side surfaces. In practice, the connecting shaft is connected to one of the rotating shafts 18 via a coupling (not shown). It is connected to the body and has a long shape. The blower device S includes a blower fan 4 fitted to each rotating shaft 18 of a fan motor 16 and a fan case 14 that surrounds the blower fan 4 except in the axial direction.

The fan motor 16 is disposed at a position deviated in one direction from the center in the longitudinal direction of the unit main body 1, and one blower fan 4 is attached to one of the rotating shafts 18 that also protrudes the one side force. The other side force of the fan motor 16 A plurality (three in this case) of blowers 4 are attached at predetermined intervals to the elongated rotary shaft 18 to which the connecting shaft is actually connected.

[0019] The blower fan 4 is a so-called multi-blade fan, and is of a type that blows air that also absorbs axial force as it rotates, in the circumferential direction. The long rotating shaft 18 to which the connecting shaft is connected is supported by a bearing 17. The bearing 17 is attached to the top plate lb via a bearing fixing device 20. Therefore, when the unit main body 1 is attached to a predetermined portion, the fan motor 16 and the motor fixing device 19 and the bearing 17 and the bearing fixing device 20 are suspended from the top plate lb.

The both sides of the fan case 14 are provided with openings through which the rotating shaft 18 penetrates and the both sides of the blower fan 4 are exposed, and form suction ports n of the blower fan 4. On the peripheral surface of the fan case 14, an outlet m having a rectangular cross-section is formed so as to protrude therefrom, and is fitted into an opening of the same shape provided in the partition plate 6 to move toward the heat exchange chamber B. Protrude.

In the heat exchange chamber B, the indoor heat exchanger 5 and a drain receiver 7 described below are arranged below the indoor heat exchanger 5. In particular, as shown in FIG. 2, the indoor heat exchanger 5 is in a state of being extremely inclined toward the outlet 3 because the unit unit 1 is formed with the vertical dimension as short as possible. It is arranged at an angle.

[0022] The indoor heat exchange 5 has end plates 5b at both end portions, a plurality of fins 5a arranged side by side with a small gap between the both end plates 5b, and these end plates. 5b and a heat exchange pipe 5c provided through the fins 5a. The end plate 5b, the fin 5a, and the heat exchange pipe 5c are made of a material having excellent heat transfer characteristics, and the end plate 5b and the fin 5a are in close contact with the heat exchange pipe 5c.

[0023] The upper edges of the end plate 5b and the fin 5a are aligned at the same position, especially under the end plate 5b. One of the features is that the edge is formed higher than the lower edge of the fin 5a. In other words, the side view of the indoor heat exchange 5 is covered with the end plate 5b, but only the lower end of the fin 5a is exposed from the end plate 5b.

[0024] The heat exchange pipes 5c are provided in a plurality of rows at a predetermined pitch along the longitudinal direction of the fins 5a and across the width direction of the fins 5a. One of the features is that the heat exchange pipes 5c in adjacent rows are provided at different height positions so as not to completely coincide with each other in the horizontal direction.

The drain receiver 7 is formed of, for example, a thick synthetic resin material, and receives all of the drain water droplets generated and dropped from the indoor heat exchanger 5 inclined with the refrigeration cycle operation. So that it occupies almost the entire bottom surface of the heat exchange chamber B.

[0026] The drain receiver 7 has a front wall integrally projecting from a bottom portion 7a on which the lower end portion of the indoor heat exchanger 5 is directly mounted and an outlet 3 which is a front side of the bottom portion 7a. Part 7b, a rear wall part 7c integrally projecting from the rear side of the bottom part 7a, and a side wall part connecting the front wall part 7b and the rear wall part 7c and integrally projecting from both sides of the bottom part 7a. Consists of 7d. In other words, the walls 7b-7d protrude along the front, rear, left and right peripheral portions of the bottom 7a, and the drain receiver 7 has a dish-shaped (recessed) cross section.

The front wall portion 7b, the side wall portion 7d, and the rear wall portion 7c have the same upper end surface in the same position and are formed substantially horizontally, while having the height (depth) ) The dimensions are different from each other. That is, one of the features is that the drain receiving bottom portion 7a is formed in a step-like manner with the front wall portion 7b side force acting on the rear wall portion 7c in the forward and backward directions.

[0028] To further explain the drain receiving bottom portion 7a, the front wall portion 7b side is the highest stepped first stepped portion X, which is adjacent to the first stepped portion X and is higher than the first stepped portion X. A second step Y which is one step lower is formed, and a third step Z which is formed one step lower than the second step Y on the rear wall 7c side adjacent to the second step Y is formed. . Referring to the second step Y in the center, the second step Y is formed lower than the first step X and higher than the third step Z.

[0029] As described above, the first, second, and third steps X, Υ, and Z have a step-like shape, and each of the steps is inclined downward in the front-rear direction. Straight to X, Y, Z The drain water that comes in contact with the drop is smoothly guided to the rear wall 7d, which is the inclined direction.

That is, the drain water dropped on the first step X is automatically led to the second step Y, and the drain water dropped on the second step Y and the first step X are dropped. The drain water thus drained is guided to the third step Z. Finally, all of the drain water dropped into the drain receiver 7 flows into the third step Z.

[0031] The lower end of the indoor heat exchanger 5 is placed on the second step Y. As described above, the indoor heat exchanger 5 includes a plurality of fins 5a arranged side by side with a small gap therebetween, and end plates 5b provided on both sides of the fins 5a. The lower edge of the end plate 5b is formed higher than the lower edge of the fin 5a. For this reason, the lower edge of the fin 5a directly rests on the second step Y, and the lower edge of the end plate 5b has a certain gap with the second step Y.

At the bottom 7a of the drain receiver 7, a drain pump is attached to the third step Z, which is the rear end, and drain water collected in the drain receiver 7 is connected to the drain receiver 7. Discharge via a hose (both not shown).

[0033] An upper heat insulating material 8 supporting the upper end of the indoor heat exchanger 5 is provided in the upper part of the heat exchange chamber B, and generates heat (warming heat) due to the refrigerating cycle action of the indoor heat exchanger 5. Like the drain receiver 7, it is formed of a thick heat insulating material so that the heat is not transmitted to the top plate part lb forming the unit body 1.

As shown in FIGS. 4 and 5, in particular, side heat insulators 9 are installed between both side walls 7 d forming both sides of the drain receiver 7 and both sides of the upper heat insulator 8. . The upper end face of the side heat insulating material 9 closely contacts the upper heat insulating material 8, and the lower end face of the side heat insulating material 9 closely contacts the upper end face of the drain receiving side wall 7e.

[0035] Explaining further, the side heat insulating material 9 is integrally attached to the inner surface of the side plate part lc constituting the unit main body 1. The lower end of the side plate portion lc is bent in the horizontal direction, and forms a fitting portion 21 that is bent downward in the vertical direction from the horizontal bent portion 21a. As an individual part before the assembled state as shown in FIG. 5, the lower end of the side heat insulating material 9 is slightly smaller than the bent part 2 la at the lower end of the side plate part lc as shown by the two-dot chain line in the figure. (About 2-3 mm).

In assembling, the outer side surface of the side wall 7 d of the drain receiver 7 is fitted to the fitting portion 21 at the lower end of the side plate portion lc. Fit it. 2, the fitting portion 21 is also provided at the lower end of the partition plate 6, and the rear wall 7c of the drain receiver 7 is fitted therein.

As shown in FIG. 5 again, the lower end of the side heat insulating material 9 rests on the upper end surface of the drain receiving side wall 7d, and the portion protruding from the bent portion 21a is compressed and elastically deformed. Therefore, the drain receiver 7 and the side heat insulating material 9 are in close contact with each other. Since the side heat insulating material 9 and the upper heat insulating material 8 are also in close contact with each other, heat exchange air does not leak from between them.

[0038] When the assembly of all the components is completed and the product is installed, the refrigeration cycle is performed, and the blower S is driven, the room air is sucked in from the suction port 2 and the blower chamber A and the partition plate 6 are separated. Is blown to the indoor heat exchanger 5 of the heat exchange chamber B via the The indoor air exchanges heat when passing through the indoor heat exchange ^^ 5, is guided by the vertical louver 12 and the horizontal louver 13, and is blown into the room from the outlet 3. From this, it is possible to obtain an indoor cooling or heating effect.

[0039] With the refrigeration cycle operation, drain water is generated in the indoor heat exchanger 5, and drops to the drain receiver 7 as water droplets. The drain receiver 7 is formed so as to occupy almost the entire area of the heat exchange chamber B, and the indoor heat exchange 5 is mounted on the drain receiver bottom 7a, so that all drain water is reliably received by the drain receiver 7. Can be

[0040] The drain receiver 7 is surrounded by a front wall 7b, a rear wall 7c, and both side walls 7d around the bottom 7a. Since the drain receiver 7 is formed in a concave shape in cross section, generation of drain water is performed. Even if the amount becomes extremely large, the drain water does not overflow from the drain receiver 7.

[0041] The drain receiving bottom 7a is formed from a first step X, a second step Y, and a third step Z from the front wall 7b to the rear wall 7c. Since these steps X-Z form a step shape that goes down sequentially, all the drain water dropped on the drain receiving bottom 7a surely flows into the third step Z.

On the other hand, the blower S is driven and the room air sucked from the suction port 2 is blown out to the heat exchange chamber B, and flows through the indoor heat exchanger 5. The indoor heat exchanger 5 is mounted on the second step Y forming the drain receiving bottom 7 and is arranged obliquely to the first step X side. Since the third step Z is provided on the primary side of the indoor heat exchanger 5 which is the heat exchange air introduction side, the drain water collected in the third step Z is affected by the flow of the heat exchange air. Two There is no backflow to the next step, the first step X side.

[0043] Since the drain water dripping from the indoor heat exchanger 5 to the first stage X is immediately guided to the second stage Y along the inclination, a little water is present on the secondary side of the indoor heat exchanger 5. The drain water does not accumulate, and therefore does not flow out of the outlet 3 into the room on the heat exchange air. By adopting the shape structure of the drain receiver 7, the comfort can be improved.

[0044] The lower end edge of the end plate 5b constituting the indoor heat exchange 5 is formed higher than the lower end edge of the fin 5a, and the lower end edge of the fin 5a is placed on the drain receiving bottom 7a. The lower edge is hardly immersed in the drain water collected in the drain receiving bottom 7a, and does not cause corrosion.

[0045] A plurality of rows of heat exchange pipes 5c constituting the indoor heat exchanger 5 are provided in the width direction of the fins 5a so that the heat exchange pipes 5c in adjacent rows do not completely coincide with each other in the horizontal direction. Since the height positions are different, the heat exchange action by contact between the heat exchange air that conducts the indoor heat exchange 5 and the heat exchange pipes 5c in each row is improved, and the heat transfer efficiency can be improved.

Since the lower end of the side heat insulating material 9 is previously projected below the bent portion 21a at the lower end of the side plate portion lc and is mounted on the upper end surface of the side wall portion 7e of the drain receiver 7, the side heat insulating material 9 The portion projecting from the bent portion 21a is compressed and elastically deformed, so that the drain receiver 7 and the side heat insulating material 9 come into close contact with each other. Therefore, the heat exchange air does not leak from between the side heat insulating material 9 and the drain receiver 7, and a special sealing material is not required separately, so that the sealing property is reliably maintained.

[0047] A fitting portion 21 is formed integrally with the side plate portion lc and the lower end portion of the partition plate 6, so that the side wall portion 7d and the rear wall portion 7c of the drain receiver 7 are fitted together. The positioning of the drain receiver 7 in the step can be performed easily and accurately, and the workability can be improved.

[0048] The drain receiver 7 of the present invention is not limited to the above-described configuration, and various modifications can be made without departing from the spirit of the present invention, and the present invention includes all of them. Things.

Industrial applicability

According to the present invention, it is possible to obtain an air conditioner having a drain receiving structure in which drain water is not blown out from a blowout port and improving comfort.

Claims

The scope of the claims

[1] A unit body having an interior partitioned into a ventilation chamber and a heat exchange chamber by a partition plate, having a suction port on the side of the ventilation chamber and an outlet on the side of the heat exchange chamber,

A blower that is disposed in the blower chamber of the unit body, sucks room air from a suction port, blows air to the heat exchange chamber via the partition plate, and blows air into the room from the blowout port; A heat exchanger that is disposed in the chamber and exchanges heat when air blown from the blower is conducted,

An air conditioner including a drain receiver disposed below the heat exchange and receiving drain water generated during the refrigeration cycle operation.

The drain receiver has a bottom portion provided on the heat exchange air outlet side of the heat exchanger, and a lower end of the heat exchanger provided on the heat exchange air upstream side of the first stage portion. And a third step portion provided directly upstream of the second step portion with respect to the heat exchange air, and the second step portion is provided with the second step portion. An air conditioner characterized by being formed lower than the first step and higher than the third step.

[2] The heat exchanger has end plates provided at both end portions, a plurality of fins arranged side by side with a narrow gap therebetween, and penetrating the end plates and the fins. And heat exchange pipes

2. The air conditioner according to claim 1, wherein lower end edges of the both end plates are formed higher than lower end edges of the fins.