WO2013153976A1

WO2013153976A1 - Air conditioner

Info

Publication number: WO2013153976A1
Application number: PCT/JP2013/059839
Authority: WO
Inventors: 高橋雅也
Original assignee: シャープ株式会社
Priority date: 2012-04-11
Filing date: 2013-04-01
Publication date: 2013-10-17
Also published as: CN104053955A; JP2013217614A; CN104053955B; JP5981201B2

Abstract

Provided is an air conditioner in which condensation water can be recovered using a simple structure, even if the droplet-formation surfaces are outside of the region above the drain pan. This invention is provided with: an air passage (6) provided between an inlet (4) and an outlet (5) formed in a casing (3); a heat exchanger (1) arranged in the air passage (6); and a drain pan (18) for recovering condensation water generated in the heat exchanger (1). Also provided is a recovery part (23) with which condensation water generated due to the temperature difference between the interior and the exterior of the air passage (6) is recovered to the drain pan (18). The recovery part (23) has inclined parts (30, 31) for guiding the condensation water to the drain pan (18), the inclined parts (30, 31) being formed so as to be continuous to the lower edges of the droplet-formation surfaces (27, 28) positioned outside of the region above the drain pan (18). The condensation water is guided to the drain pan (18) and is recovered by the inclined parts (30, 31).

Description

Air conditioner

The present invention relates to an air conditioner equipped with a heat exchanger and a drain pan for collecting condensed water.

In this type of air conditioner, when performing an air conditioning operation by a refrigeration cycle in which the indoor heat exchanger serves as an evaporator, for example, a cooling operation (dehumidifying operation), due to a temperature difference between the inside and outside of the casing of the indoor unit, It will be exposed to the boundary where the temperature difference occurs. If the dewed water is left as it is, it may cause problems such as dripping out of the case, so the dewed water will naturally drop (drop) on a drain pan with a function to collect the dewed water. It was recovered.

However, the collecting function of the drain pan is partial, and when collecting by natural fall (dripping), the collecting part must be directly below the dew spot. For this reason, in order to cover a wide range, the collection section has to be enlarged, leading to problems such as an increase in the size of the drain pan.

When the dew water cannot be collected due to the location of the location where the dew is generated, it has been structured so that it is difficult to generate dew by measures such as applying heat insulation, but when applying heat insulation, work such as peeling the heat insulation when disassembling the service etc. Therefore, workability is poor and the material cost increases due to an increase in the number of parts.

In Patent Literature 1, when screwing the front panel constituting the housing with a cooling component such as an internal heat exchanger, the screw head may be cooled and the front panel may be exposed. Measures have been disclosed for successfully performing the above. That is, in Patent Document 1, a drainage receptacle is formed immediately below the fastening screw, which is inclined downward from the front side to the backside of the front panel, and collects dew condensation water dripping from the screw head. It is disclosed that a drainage basin that collects dew water dripping from the head of a screw into a drain pan is formed between the drain pan and the drain pan. That is, in Patent Document 1, a measure is taken to guide the dripping portion to the inside of the drain pan receiving portion with the drainage receptacle and the drainage basin in the process of the dewed water propagating along the condensation surface.

JP 2007-101136 A

In Patent Document 1, the dew water that has fallen naturally is received by the drainage receiver directly below, leading to the drainage part of the drain pan. In this case, the dewwater is received by the drainage receiver directly below, and then received by the drainage receiver. In order to guide the water to a guide channel such as a drainage basin, it is necessary to form a drainage receptacle and a drainage basin, and there is a problem that the structure is complicated and the size is increased in terms of molding.

In view of the above, an object of the present invention is to provide an air conditioner that has a simple structure and can recover dewed water generated at a position outside the upper region of the drain pan.

In order to achieve the above object, the present invention provides an air passage provided between a suction port and an outlet formed in a housing, a heat exchanger disposed in the air passage, and the heat exchanger. In an air conditioner including a drain pan that collects the generated dew condensation water, a recovery unit that collects the dew condensation water generated due to a temperature difference between the inside and outside of the air passage is provided in the drain pan, and the recovery unit is located above the drain pan. An inclined portion for guiding the condensed water to the drain pan is formed continuously from the lower end of the dew surface located outside the region.

According to the above configuration, even if the dew surface is located away from the upper region of the drain pan, the inclined surface is continuously formed at the lower end of the dew surface. Is guided to the inside of the drain pan through a continuous inclined portion, peeled off at the lower end of the inclined portion, dropped into the drain pan and collected.

In this case, since the condensed water to be dripped may be collected in the drain pan, the tip position of the inclined portion may be in the upper region of the drain pan or in a state extending to the inner region of the drain pan. It may be in contact with the inner surface side. Therefore, in the following description, when the inside of the drain pan is referred to, not only the inner region of the drain pan but also the upper region of the drain pan is included.

In addition, according to the above configuration, unlike Patent Document 1, unlike the case where dripping of water from the dew surface is once received by the drainage receiver, the dew water is transmitted from the dew surface, so that it is opposed to the dew surface. There is no need for a surface having an angle, and therefore, there is an advantage that a simple structure can be obtained without complicating molding. In addition, there is an advantage that there is little adverse effect such as an increase in size of the parts, and there is little influence on the assemblability. Furthermore, depending on the combination of the shape of the dew surface / inclined surface and the adjustment of the angle of the inclined surface, the dripping position, the amount of water, and the falling speed are optimized to suppress splashing of water when recovering from the dripping. be able to.

Here, the dew surface may dew on not only one surface of the member outside the partition wall that partitions the air passage but also two adjacent surfaces. For example, it is a case where it has a dew surface on the side surface located outside in the left-right direction and a dew surface on the front surface located on the front side in the front-rear direction as the dew surface that deviates from the upper region of the drain pan.

In this case, the inclined portion includes two inclined portions: a side inclined portion formed continuously at the lower end of the side surface dew surface, and a front inclined portion formed continuously at the lower end of the front surface dew surface. It is good also as a structure provided.

That is, as a dew surface that deviates from the upper region of the drain pan, it has a dew surface on the side surface located outside in the left-right direction and a dew surface on the front surface located on the front side in the front-rear direction, It is good also as a structure which has the side inclined part formed continuously in the lower end of a side surface dew surface, and the front inclined part formed continuously in the lower end of the front side dew surface.

In the said structure, the dew generating water which generate | occur | produced on both the adjacent front side dew surface and the side surface dew surface can be efficiently collect | recovered to a drain pan through each inclination part (a side inclination part and a front inclination part). .

Moreover, a dew generation surface will not be specifically limited if it is the outer side of the partition wall which partitions off an air path and a housing | casing. That is, a partition wall that partitions the air passage from the housing is provided in the housing, and a structure having a dew surface that is out of the upper region of the drain pan is provided on the outer side of the partition wall opposite to the air passage. Also good.

In the above configuration, air conditioning operation by a refrigeration cycle in which the indoor heat exchanger serves as an evaporator, for example, cooling air flows through the air passage during cooling operation, but in the portion on the opposite side of the air passage across the partition wall, the air passage Due to the temperature difference between the side and the housing side (outside of the partition wall), the portion outside the partition wall is exposed. When this dew surface is located in the upper region of the drain pan, it is dropped directly below and collected in the drain pan. However, when the dew surface is at a position deviated from the upper region of the drain pan, the water dewed on the dew surface can be collected in the drain pan through the inclined portion formed continuously at the lower end of the dew surface.

A specific configuration of the partition wall of the air passage is exemplified. A side plate is attached to a side surface of the heat exchanger, and the side plate is a part of the partition wall that partitions the air passage and the housing.

Moreover, the following structure can also be illustrated as a dew surface of a partition wall. That is, a blower fan is disposed in the air passage, a bearing cover of the blower fan is integrally formed on the partition wall, the bearing cover is a part of the dew generation surface, and the inclined portion is continuously formed at the lower end of the bearing cover. Other configurations may be adopted.

According to the above configuration, the bearing of the rotating shaft of the blower fan is located outside the air passage, and the bearing cover that covers the bearing may be arranged at a position that is most likely to be removed from the upper region of the drain pan. Therefore, by forming an inclined part continuously at the lower end of the bearing cover that is integrally formed on the partition wall, even if the bearing cover is located outside the upper area of the drain pan, the condensed water is efficiently introduced into the drain pan by the inclined part. It can be recovered with good guidance.

As described above, with a simple structure in which the inclined surface is continuously formed from the lower end of the dew generation surface, the dew generation water can be guided to the inside of the drain pan, and the size of the collection part is suppressed and space saving is achieved. be able to. In addition, the cost can be reduced as compared with the case where a heat insulating material is used for dew generation.

It is a perspective view of the indoor unit of the air conditioner of the present invention. It is sectional drawing of an indoor unit. It is a perspective view of the indoor unit with the front cover removed. It is a perspective view of the indoor unit with the front panel removed. It is an expansion perspective view of the left side part of the indoor unit shown in FIG. FIG. 6 is a side view of FIG. 5. FIG. 5 is a front view of FIG. 4. (A) is a side cross-sectional view showing the positional relationship between the dew surface of the conventional example and the drain pan, (b) is a side cross-sectional view showing the positional relationship between the dew surface of this example and the drain pan, and (c) is the same as that of this example. It is front sectional drawing which shows the positional relationship of a dew surface and a drain pan.

Hereinafter, embodiments of an air conditioner according to the present invention will be described with reference to the drawings. In the present embodiment, an indoor unit (see FIG. 1) provided with a heat exchanger is connected to an outdoor unit (not shown) in which a compressor, an outdoor heat exchanger, an expansion valve, and a four-way switching valve are internally connected. A separate air conditioner having a refrigeration cycle will be described as an example. Note that the configuration of the outdoor unit is not directly related to the present invention, and thus the description thereof is omitted. In the following description, as indicated by arrows in FIGS. 1 to 4, the width direction is the left-right direction (axial direction) when the housing is viewed from the front, the depth direction of the housing is the front-back direction, The height direction is the vertical direction.

As shown in FIGS. 1 and 2, the indoor unit of this example includes a heat exchanger 1 and a blower fan 2, and these are housed in a housing 3. The casing 3 formed long in the left-right direction is attached to the upper part of the indoor wall so that a gap is formed between the casing 3 and the ceiling. The housing 3 includes a back plate 10 and a front panel 11.

As shown in FIG. 2, a suction port 4 is formed on the upper surface of the housing 3, and an air outlet 5 is formed on a curved surface from the front surface to the bottom surface of the housing 3. An air passage 6 extending from the suction port 4 to the blowout port 5 is formed in the housing 3. In the air passage 6, the heat exchanger 1 is disposed on the upstream side in the air flow direction, and the blower fan 2 is disposed on the downstream side of the heat exchanger 1. And the indoor air suck | inhaled from the suction inlet 4 by the drive of the ventilation fan 2 is heat-exchanged by the heat exchanger 1 which comprises a refrigerating cycle in the air path 6, is air-conditioned, and discharge | releases into the room | chamber interior from the blower outlet 5 Is done.

The heat exchanger 1 is arranged in an inverted V shape in a side view by a front heat exchanger 1a and

upper heat exchangers

1b and 1c so as to surround the front and upper sides of the blower fan 2. A drain pan 18 for collecting condensed water generated in the heat exchanger 1 is disposed below the front heat exchanger 1a. Of the

upper heat exchangers

1b and 1c, a back side drain receiver 19 for collecting condensed water generated in the heat exchanger 1c is provided below the rear heat exchanger 1c. Yes.

The front drain pan 18 is formed longer than the length in the left-right direction of the front heat exchanger 1a. In this example, the left side of the drain pan 18 is extended outward in the left-right direction, and a recovery path (not shown) is formed in the side surface portion of the back plate 10 so as to communicate with the back-side drain receiver 19 in the extended portion. Condensed water collected by the back side drain receptacle 19 through the road is collected by the extended portion of the front drain pan 18. The extending portion extends to the outside of the partition wall 22 (see FIG. 4) that partitions the air passage 6, and collects condensed water from the back side drain receiver 19 outside the partition wall 22. .

The drain pan 18 not only collects the dew condensation water generated in the heat exchanger 1, but also performs an air conditioning operation by a refrigeration cycle in which the heat exchanger 1 serves as an evaporator, for example, a cooling operation. Condensed water generated in the outer portion of the partition wall 22 serving as a boundary is also recovered due to the temperature difference between the air passage 6 through which the cold air flows and the outer space portion across the partition wall 22. The configuration of the dew condensation water recovery unit 23 will be described later.

As shown in FIGS. 1 and 3, the front panel 11 is attached to a front cover 12 that covers an opening on the front surface so that the front cover 12 can be opened and closed. A lattice-like filter guide 13 is provided in the upper part of the opening on the front surface and the opening on the upper surface, and the filter 7 is held. When the front cover 12 is opened, the filter 7 is exposed and the filter 7 can be attached and detached.

2 and 4, a drain pan unit 14 including a drain pan 18 is provided in the opening of the curved surface of the front panel 11. The drain pan unit 14 has a drain pan 18 at the top, the blower outlet 4 is formed below the drain pan 18, a wind guide panel 15 that opens and closes the blower outlet 5 is provided to be openable and closable, and a wind direction plate 16 is also provided. .

As shown in FIGS. 4 to 7, a partition wall 22 that partitions the air passage 6 and the housing is provided on the upper side of the drain pan 18. A side plate 20 of the heat exchanger 1 and a bearing cover 21 that supports the rotating shaft of the blower fan 2 are integrally formed on the partition wall 22 with a synthetic resin.

The heat exchanger 1 has side plates 20 attached to both side surfaces in the left-right direction. The side plate 20 is used for fixing the heat exchanger 1 to the back plate 10. Further, the side plate 20 is formed in a shape along the side shape of the heat exchanger 1, but is integrally formed with the bearing cover 21 of the blower fan 2 in order to function as the partition wall 22.

The bearing cover 21 is formed in a semi-cylindrical shape so that the front half of the bearing can be accommodated therein, and the rear surface is a flat surface facing the mounting portion 24 of the back plate 10. The upper part and the lower part of the bearing cover 21 are screwed to the side member on the back plate 10 side in the front-rear direction.

Reference numerals

25 and 26 in FIG.

The lower portion of the bearing cover 21 is located on the left side of the lower portion of the drain pan 18 but constitutes a part of the partition wall 22 and becomes a dew surface.

FIG. 8A is a side sectional view showing a positional relationship between the dew surface of the conventional bearing cover 21 and the drain pan 18. Since the bearing cover 21 is located rearward of the drain pan 18, the dew generation surface of the bearing cover 21 is located behind the drain pan 18 in the front-rear direction. Therefore, the dew condensation water generated on the dew surface is transmitted through the dew surface and separated from its lower end and naturally falls, so that it cannot be collected in the drain pan 18.

However, in this example, in order to eliminate the above-described problem of collecting condensed water, a collecting unit 23 as shown in FIGS. 8B and 8C is provided. FIG. 8B is a side sectional view showing the positional relationship between the dew surface and the drain pan, and FIG. 8C is a front sectional view. As shown in FIG. 8 (b), the collecting portion 23 of the present example is first formed with a plate-like front inclined portion 30 that is continuous with the lower end of the bearing cover 21 and is inclined downward in the front-rear direction. The lower end of the front inclined portion 30 is positioned in the upper region of the drain pan 18. Thereby, the dew condensation water generated on the dew surface 27 on the front side of the bearing cover 21 located behind the drain pan 18 is guided from the dew surface 27 on the front side to the inside of the drain pan 18 through the front inclined portion 30. It will be collected.

Further, as shown in FIG. 8C, the collection unit 23 is inclined on the side by tilting the outer edge side in the left-right direction of the plate-like front inclined portion 30 of the bearing cover 21 toward the center side in the left-right direction. Part 31 is formed. The lower end of the side inclined portion 31 is positioned in the upper region of the drain pan 18. Thereby, the dew condensation water generated on the dew surface 28 (the dew surface on the thickness side) on the side surface of the outer edge in the left-right direction of the bearing cover 21 can be guided to the inside of the drain pan 18.

In addition, in this example, although the collection | recovery part 23 outside the left end part partition wall 22 of the heat exchanger 1 was demonstrated, in the left end part partition wall outer side of the heat exchanger 1, the collection part shown in FIG. Any configuration in which a material is pasted may be adopted.

In the above configuration, during the cooling operation, the indoor air sucked from the suction port 4 of the housing 3 is heat-exchanged by the heat exchanger 1, and the air-conditioned cold air flows through the air passage 6 by the blower fan 2 and from the blower outlet 5. Released into the room. At this time, the partition wall 22 that divides the air passage 6 inside the housing 3 has a portion on the side opposite to the air passage 6, for example, the bearing cover 21, the air passage side and the housing 3 side (the partition wall 22 The bearing cover 21 is dewed due to the temperature difference from the outside. When the dew surface is located in the upper region of the drain pan 18, it can be dropped directly below and collected in the drain pan 18.

Further, even when the dew surface is at a position outside the upper region of the drain pan 18, the water dewed on the front surface dew surface 27 of the bearing cover 21 is continuously formed at the lower end of the front surface dew surface 27. It can be efficiently recovered from the tip of the front inclined portion 30 to the inside of the drain pan 18.

In particular, the dew surface of the bearing cover 21 has not only a right and left width dew surface 27 (front surface dew surface 27) but also a side surface dew surface 28 (thickness side surface 28). However, it may occur on two

adjacent surfaces

27 and 28 of the plate material. Even in this case, the dew condensation water can be guided to the inside of the drain pan 18 by the plate-like front inclined portion 30 and the side inclined portion 31 of the bearing cover 21.

In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. For example, in this example, the example in which the inclined portion is continuously formed on the bearing cover that constitutes a part of the partition wall is shown, but the member that forms the inclined portion is not limited to this, and other members that form the partition wall are also included. Of course, it may be formed on a part, for example, a side plate.

Moreover, although the front-end | tip of an inclination part is located in the upper area | region of a drain pan in FIG. 8, a water droplet can be more reliably guided to the inside of a drain pan by extending to the interior area of a drain pan. Furthermore, if the tip of the inclined portion is extended to the vicinity of the bottom of the drain pan, it is possible to reduce the falling sound of the water droplet and the scattering of the water droplet when the water droplet falls to the inner area of the drain pan. Further, the inclined portion may have a different inclination angle in the middle of the inclined surface. Further, the tip of the inclined portion may have a shape that hangs substantially vertically as the shape after reaching the inside of the drain pan.

DESCRIPTION OF SYMBOLS 1

Heat exchanger

1a, 1b, 1c Heat exchanger 2 Fan 3 Housing | casing 4 Suction inlet 5 Outlet 6 Air passage 7 Filter 10 Back plate 11 Front panel 12 Front cover 13 Filter guide 14 Drain pan unit 15 Wind guide panel 16 Wind direction plate 18 Drain pan 19 Back side drain receiver 20 Side plate 21 Bearing cover 22 Partition wall 23 Collection part 24 Mounting

part

25, 26 Screwing

part

27, 28 Dew surface 30 Front inclined part 31 Side inclined part

Claims

An air passage provided between a suction port and an air outlet formed in the housing, a heat exchanger disposed in the air passage, and a drain pan for collecting condensed water generated in the heat exchanger. In the air conditioner
A recovery unit that recovers the condensed water generated due to a temperature difference between the inside and the outside of the air passage is provided in the drain pan, and the recovery unit is continuously connected to a lower end of a dew surface that is located outside the upper region of the drain pan. An air conditioner characterized in that an inclined portion for guiding water to the drain pan is formed.
As the dew surface deviated from the upper region of the drain pan, it has a dew surface on the side surface located on the outside in the left-right direction and a dew surface on the front side located on the front side in the front-rear direction, and the inclined portion is a side surface It has a side inclined part formed continuously at the lower end of a side dew surface, and a front inclined part formed continuously at the lower end of a front side dew surface. Air conditioner.
The partition wall which partitions an air passage and a housing | casing in the said housing | casing is provided, and has the said dew surface which remove | deviated from the upper area | region of the said drain pan in the outer part on the opposite side to the said air passage of the said partition wall. Or the air conditioner of 2.
The air conditioner according to claim 3, wherein a side plate is attached to a side surface of the heat exchanger, and the side plate is a part of a partition wall that partitions the air passage and the housing.
A blower fan is disposed in the air passage, a bearing cover of the blower fan is integrally formed on the partition wall, the bearing cover is a part of the dew generation surface, and the inclined portion continues to a lower end of the bearing cover. The air conditioner according to claim 3, wherein the air conditioner is formed.