CN110741206A - Air conditioner - Google Patents

Abstract

The air conditioner (10) includes: a heat exchanger (31); a blower fan (38); a cleaning part for cleaning the blower fan, that is, a brush (41); and a motor (51) arranged on the side of the specific heat exchanger The plate (32) is located outside, and the cleaning part is driven, and the main body of the motor is disposed outside the outer end (34a) of the curved part of the hairpin pipe (34) provided in the heat exchanger.

Description

air conditioner

technical field

The present invention relates to an air conditioner.

Background technique

In general, the longer the use time of an air conditioner having a blower fan inside, the more dust adheres to the blower fan. As a result, the air volume may decrease or the power consumption may increase in the air conditioner. In addition, the air conditioner may be unsanitary due to the growth of mold and the like due to the adhesion of dust. Therefore, the air conditioner provided with the fan cleaning device which removes the dust adhering to the blower fan, and cleans the blower fan is provided (for example, refer patent document 1). The air conditioner described in Patent Document 1 includes a fan cleaning device and a control device for controlling the fan cleaning device, and includes a normal operation mode in which conditioned air is blown out into the room, and a fan cleaning operation in which the fan is rotated at a low speed and the fan cleaning device is moved. model. The fan cleaning device is configured to include a cleaning portion that is in contact with the fan during the fan cleaning operation mode, and can be moved to a position where the cleaning portion is retracted from the fan during the normal operation mode.

However, in the fan cleaning device, the cleaning portion is rotationally driven by a motor. The efficiency of this motor is good if it is arranged in a position close to the rotating shaft of the cleaning unit. Here, in the air conditioner, the motor of the fan cleaning device is attached to the side surface of the heat exchanger (specifically, the outer wall surface of the side plate constituting the side surface of the heat exchanger) and the location close to the rotating shaft of the cleaning unit.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent No. 4046755

SUMMARY OF THE INVENTION

The problem to be solved by the invention

However, in the conventional air conditioner, since the motor of the fan cleaning device is arranged in this portion, as described below, dew condensation water may adhere to the motor, which may increase the failure rate of the motor.

For example, in an air conditioner, the heat exchanger is cooled during cooling operation. Thereby, the outer wall surface of the side plate which comprises the side surface of a heat exchanger becomes cold. The motor of the conventional air conditioner is attached to the outer wall surface of the side plate. Therefore, due to the influence of cold air from the side plate, the motor may be cooled too much, and dew condensation water may be generated and adhered to the motor. Therefore, the failure rate of the motor may increase.

Moreover, for example, the side plate of a heat exchanger is arrange|positioned with the hairpin pipe which swelled toward the outside. When the air conditioner is in cooling operation, the refrigerant flows in the hairpin tube, and the dew condensation water will adhere to the hairpin tube. In the conventional air conditioner, the motor is arranged directly below the hairpin tube, so the dew condensation water drips from the hairpin tube and falls to the motor. As a result, the failure rate of the motor may increase.

The present invention was made in order to solve the above-mentioned problems, and an object thereof is to provide an air conditioner capable of suppressing adhesion of dew condensation water to a motor of a fan cleaning device.

solutions to problems

In order to achieve the above object, the present invention is an air conditioner comprising: a heat exchanger; a blower fan; a cleaning unit that cleans the blower fan; The main body of the motor is arranged on the outer side, and the cleaning unit is driven, and the main body of the motor is arranged on the outer side of the outer end of the curved portion of the hairpin tube provided in the heat exchanger.

Other schemes are described later.

Invention effect

ADVANTAGE OF THE INVENTION According to this invention, it can suppress that dew condensation water adheres to the motor of a fan cleaning apparatus.

Description of drawings

FIG. 1 is a schematic diagram showing the overall configuration of the air conditioner according to the first embodiment.

2 is a schematic diagram showing a heat exchanger of the indoor unit of the air conditioner according to Embodiment 1 and the configuration of its surroundings.

FIG. 3 is a schematic diagram showing the configuration of the fan cleaning device and its surroundings according to Embodiment 1. FIG.

4 is an exploded view showing the configuration of a motor unit of the fan cleaning device according to Embodiment 1. FIG.

5 is a schematic diagram showing a suitable arrangement position of the motor unit according to the first embodiment.

6A is a schematic diagram (1) showing a suitable arrangement relationship between the motor and the drain pan of the motor unit according to the first embodiment.

6B is a schematic diagram (2) showing a suitable arrangement relationship between the motor and the drain pan of the motor unit of the first embodiment.

6C is a schematic diagram (3) showing a suitable arrangement relationship between the motor and the drain pan of the motor unit according to the first embodiment.

FIG. 7 is a schematic diagram showing the configuration of the cleaning unit used in Embodiment 1. FIG.

FIG. 8 is a schematic diagram showing the configuration of another cleaning unit used in Embodiment 1. FIG.

FIG. 9 is a perspective view ( 1 ) of main parts showing the configuration of another cleaning unit used in Embodiment 1. FIG.

FIG. 10 is a perspective view ( 2 ) of main parts showing the configuration of another cleaning unit used in Embodiment 1. FIG.

FIG. 11 is a schematic diagram showing the configuration of a motor unit according to Embodiment 2. FIG.

FIG. 12 is an exploded view showing the configuration of a motor unit according to Embodiment 2. FIG.

FIG. 13 is a schematic diagram showing the internal structure of the motor unit according to Embodiment 2. FIG.

FIG. 14 is a schematic diagram showing the internal structure of the motor unit according to the first modification.

FIG. 15 is a schematic view showing the internal structure of the motor unit according to the second modification.

FIG. 16 is a schematic diagram showing the internal structure of the motor unit according to the third modification.

FIG. 17 is a schematic diagram showing the internal structure of the motor unit according to the fourth modification.

Detailed ways

Hereinafter, an embodiment of the present invention (hereinafter referred to as "the present embodiment") will be described in detail with reference to the accompanying drawings. In addition, each drawing is a schematic representation only to the extent which can fully understand this invention. Therefore, the present invention is not limited to the illustrated examples. In addition, in each figure, the same code|symbol is attached|subjected to the common component and the same component, and the repeated description is abbreviate|omitted.

[Embodiment 1]

The present Embodiment 1 aims to provide the following air conditioner 10 .

(1) As shown in FIG. 5 , in the air conditioner 10 according to the first embodiment, the motor 51 is separated from the side plate 32 of the heat exchanger 31 , and the motor 51 is excessively cooled due to the influence of the cold air transmitted from the side plate 32 . The generated dew condensation water does not adhere to the motor 51 .

(2) As shown in FIG. 5 , in the air conditioner 10 according to Embodiment 1, the motor 51 is displaced outward (leftward in FIG. 5 ) from the portion directly below the hairpin pipe 34 , and the motor 51 is displaced from the hairpin pipe The dew condensation water dropped by 34 does not fall to the main body of the motor 51 .

(3) As shown in FIG. 3 , in the air conditioner 10 of the first embodiment, the main body of the motor 51 is covered with the motor cover 60 , so that the dew condensation water does not drip onto the main body of the motor 51 or adhere to the dew condensation. Moreover, as shown in FIG. 3, the air conditioner 10 of this Embodiment 1 covers the upper part of the inner end part of the motor 51 with the protrusion part 32p, and prevents dew condensation water from dripping and adhering to the main body of the motor 51. In addition, as shown in FIGS. 6A to 6C , the air conditioner 10 according to Embodiment 1 can reliably receive the dew condensation water that drips by adhering to the motor cover 60 by the drain pan 39 .

<Overall structure of air conditioner>

Hereinafter, with reference to FIG. 1, the whole structure of the air conditioner 10 of this Embodiment 1 is demonstrated. FIG. 1 is a schematic diagram showing the overall configuration of the air conditioner 10 according to the first embodiment.

As shown in FIG. 1 , the air conditioner 10 includes an indoor unit 11 arranged indoors and an outdoor unit 12 arranged outdoors.

The indoor unit 11 sucks indoor air into the interior, passes the sucked indoor air through the heat exchanger 31 (refer to FIG. 2 ), and obtains conditioned air subjected to any treatment of heating, cooling, and dehumidification. It is blown out into the room to air-condition the room. The indoor unit 11 is connected to the outdoor unit 12 via a connection pipe 13 , and circulates the refrigerant between the indoor unit 11 and the outdoor unit 12 . The outdoor unit 12 exchanges heat with the circulating refrigerant.

The indoor unit 11 incorporates structures such as a blower fan 38 (refer to FIG. 2 ) and a heat exchanger 31 (refer to FIG. 2 ) using a casing 21 and a decorative frame 22 as an exterior member thereof. The blower fan 38 is a cross-flow fan that sends air from the air intake port 24 side to the air outlet port 25 side, and blows the air heat-exchanged by the heat exchanger 31 . The heat exchanger 31 is means for exchanging heat with the refrigerant.

In the example shown in FIG. 1, the front panel 23 is attached to the upper side part of the front surface of the decorative frame 22 (exterior member). The front panel 23 is a member that covers the front surface of the indoor unit 11 . Moreover, the upper and lower wind direction boards 26 are attached to the lower side part of the front surface of the decorative frame 22 .

The up-and-down wind direction plate 26 is a member which defines the direction of the up-down direction of the conditioned air blown out from the air outlet 25 . The up-and-down wind direction plate 26 is pivotally supported by the drain pan 39 in the vicinity of the lower end so that the upper portion can be opened and closed in the up-down direction, and is rotated by a driving part (not shown). The indoor unit 11 forms an air outlet 25 by opening the up-and-down air direction plate 26 .

<The structure of the heat exchanger and its surroundings>

Hereinafter, with reference to FIGS. 2 and 3 , the configuration of the heat exchanger 31 of the indoor unit 11 of the air conditioner 10 and its surroundings will be described. FIG. 2 is a schematic diagram showing the configuration of the heat exchanger 31 and its surroundings. FIG. 3 is a schematic diagram showing the configuration of the fan cleaning device 40 and its surroundings.

As shown in FIG. 2 , inside the indoor unit 11, the above-described blower fan 38, the above-described heat exchanger 31, and a drain pan 39 for receiving dew condensation water that adheres to the heat exchanger 31 and drips during the cooling operation are arranged. Construct. The heat exchanger 31 includes a plurality of fins 31a for exchanging heat between the refrigerant and indoor air, and a plurality of hairpin tubes 34 through which the refrigerant flows. As shown in FIG. 3 , the heat exchanger 31 has side plates 32 constituting side surfaces at both end portions. The fins 31a, the hairpin tubes 34, and the like are cooled during the cooling operation, and dew condensation water adheres thereto. The dew condensation water adhering to these components drops and is received by the drain pan 39 (see FIG. 2 ).

Moreover, the side plate 32 is provided with the protrusion part 32p. The protruding portion 32p is formed on the side plate 32 so as to cover at least the upper part of the inner end portion of the motor 51 so that the dew condensation water dropped from the hairpin 34 does not fall to the motor assembly 50 (particularly, the main body of the motor 51 ) described later. formed by protruding outside. In addition, the hairpin tube 34 has a shape bent so as to be folded back in the vicinity of the outer side of the side plate 32 . The hairpin pipes 34 are connected by pipes not shown.

When the indoor unit 11 is continuously used, dust and the like will adhere to the blower fan 38 . Therefore, as shown in FIGS. 2 and 3 , the indoor unit 11 includes a fan cleaning device 40 for cleaning the blower fan 38 .

As shown in FIG. 3 , the fan cleaning device 40 includes a brush 41 , a shaft 45 and a motor assembly 50

The brush 41 is a member (cleaning part) which abuts on the blower fan 38 (refer to FIG. 2 ) and performs cleaning.

The shaft 45 is a member that holds the brush 41 (cleaning part).

The motor unit 50 is a drive mechanism for rotationally driving the shaft 45 in the axial direction.

The brush 41 is constituted as a separate body from the shaft 45 and can be attached to and detached from the shaft 45 . In addition, here, the example in which the cleaning part of the fan cleaning device 40 is comprised by the brush 41 is demonstrated. However, the cleaning portion of the fan cleaning device 40 may be constituted not only by the hair-like brush 41 but also by a plate having elasticity such as a sponge or an elastic body.

The brush 41 and the shaft 45 are respectively elongated members. Hereinafter, the brush 41 and the shaft 45 are collectively referred to as "the brush 41 and the like". The brush 41 etc. are arrange|positioned so that rotation about the axis|shaft is possible between the fins 31a (refer FIG. 2) of the heat exchanger 31, and the ventilation fan 38. As shown in FIG. The brush 41 and the like are slightly longer than the length in the longitudinal direction of the ventilation fan 38 so as to cover the entire area in the longitudinal direction of the ventilation fan 38 . The brush 41 etc. are arrange|positioned so that both end parts may penetrate the two side plates 32 arrange|positioned at the both end parts of the heat exchanger 31. FIG.

Both ends of the brush 41 and the like are rotatably held by the motor assembly 50, bearing members not shown, and the like.

The brush 41 has a plurality of fiber portions 42 and a brush base portion 43 . The fiber portion 42 is a contact portion that is in contact with the blower fan 38 . The brush base 43 is a base for holding each fiber part 42 .

The motor assembly 50 includes a motor 51 that rotationally drives the brush 41 and the like, and a motor cover 60 that covers the periphery of the motor 51 . The rotating shaft 52 of the motor 51 is directly or indirectly connected to the shaft 45 through a gear, an adapter, or the like, not shown. In addition, in the example shown in FIG. 3 , although the spacer 69 shown in FIG. 5 is not used, the motor assembly 50 may be mounted on the side plate 32 of the heat exchanger 31 through the spacer 69 shown in FIG. 5 .

FIG. 4 shows the configuration of the motor unit 50 of the present embodiment. FIG. 4 is an exploded view of the motor assembly 50 of the present embodiment. FIG. 4 shows an example in which the motor unit 50 is disassembled into the motor 51 , the heat insulating material 54 , and the motor cover 60 .

In the example shown in FIG. 4 , the motor 51 includes a rotating shaft 52 , a lead wire 53 drawn from the inside of the main body to the outside, and a fixing portion 56 connected to the motor cover 60 with screws 55 . The heat insulating material 54 is tape-shaped, and is wound around the main body of the motor 51 so as to cover at least the peripheral surface of the main body of the motor 51 (see hollow arrow A11).

The motor cover 60 has a housing portion 61 that houses the main body of the motor 51 , and a fixing portion 66 that is fastened to the side plate 32 of the heat exchanger 31 and the like with screws 65 . A groove 62 for accommodating the lead wire 53 of the motor 51 is formed in the lower portion of the inner peripheral surface of the accommodating portion 61 .

The motor 51 on which the heat insulating material 54 is wound is accommodated in the accommodating portion 61 of the motor cover 60 (refer to the hollow arrow A12). At this time, the lead wire 53 of the motor 51 is pulled out to the outside of the motor cover 60 through the groove 62 of the motor cover 60 .

When the motor 51 is accommodated in the accommodating portion 61 of the motor cover 60 , the screw 55 passes through the fixing portion 56 of the motor 51 to connect the motor 51 and the motor cover 60 . Thus, the motor assembly 50 is assembled. The motor assembly 50 is arranged outside the side plate 32 (see FIG. 3 ) of the heat exchanger 31 . Then, the motor cover 60 and its attachment object are coupled to the motor cover 60 by passing the screws 65 through the fixing portions 66 of the motor cover 60 .

<Appropriate placement of the motor unit>

FIG. 5 shows a suitable arrangement position of the motor unit 50 of the present embodiment. FIG. 5 is a schematic diagram showing a suitable arrangement position of the motor unit 50 according to the present embodiment.

For example, in the air conditioner 10, during the cooling operation, the heat exchanger 31 is cooled. Thereby, the outer wall surface of the side plate 32 of the heat exchanger 31 becomes cold. If the motor 51 is directly attached to the outer wall surface of the side plate 32 , there is a possibility that dew condensation water may adhere to the main body of the motor 51 due to the influence of cold air transmitted from the side plate 32 . Therefore, such a configuration is not ideal.

Therefore, as shown in FIG. 5 , in the air conditioner 10 of the present embodiment, the motor 51 is arranged so that the inner end portion 50x of the main body of the motor 51 is separated from the side plate 32 . Specifically, the air conditioner 10 is provided with a spacer 69 , a space, and the like between the heat exchanger 31 and the motor assembly 50 . In addition, in the example shown in FIG. 5 , the air conditioner 10 attaches the motor assembly 50 to the heat exchanger 31 through the spacer 69, the space, etc., so that the inner end portion 50x of the main body of the motor 51 is separated from the side plate 32. leave.

In addition, even if the inner end portion 50x of the main body of the motor 51 is separated from the side plate 32, if the separation distance is insufficient, the dew condensation water adhering to the hairpin tube 34 may drop to the motor assembly 50.

At this time, the air conditioner 10 is not ideal for the following reasons, especially when dew condensation water falls near the mating surface 50z between the motor unit 50 and the spacer 69 . For example, in general, the mating surface 5Oz is sealed. However, if there is a gap between the mating surfaces 50z, there is a possibility that dew condensation water penetrates into the mating surface 50z through the gap and reaches the main body of the motor 51 . Therefore, the dew condensation water may adhere to the main body of the motor 51 . Therefore, it is not ideal that the dew condensation water falls near the mating surface 50z. Therefore, it is preferable for the air conditioner 10 to ensure a sufficient separation distance between the inner end portion 50x of the main body of the motor 51 and the side plate 32 .

Therefore, as shown in FIG. 5 , the air conditioner 10 of the present embodiment is arranged, for example, so that the inner end portion 50x of the main body of the motor 51 is larger than the outer end portion 34a of the curved portion of the hairpin tube 34 by a distance t1 to the outside. Motor 51 (motor assembly 50). Thereby, the air conditioner 10 can suppress the dew condensation water dripped from the hairpin pipe 34 from adhering to the main body of the motor 51 . In addition, here, the "outside" means the side away from the side plate 32 of the heat exchanger 31 .

However, in the air conditioner 10 , if the separation distance between the inner end portion 50x of the main body of the motor 51 and the side plate 32 is too large, the outer end portion 50y of the motor assembly 50 abuts on the inner wall surface of the decorative frame 22 . Therefore, when the motor 51 is driven, there is a possibility that the vibration of the motor 51 is propagated to the decorative frame 22 to generate noise.

Therefore, as shown in FIG. 5 , in the air conditioner 10 of the present embodiment, for example, the motor 51 (motor unit 50 ) is arranged so that the outer end 50y of the motor unit 50 faces inward by a distance t2 from the inner wall of the decorative frame 22 . . Thereby, the air conditioner 10 can suppress that the vibration of the motor 51 is propagated to the decorative frame 22 when the motor 51 is driven, and noise is generated.

<Appropriate arrangement relationship between the motor of the motor unit and the drain pan>

FIGS. 6A to 6C show a suitable arrangement relationship between the motor 51 and the drain pan 39 of the motor assembly 50 of the present embodiment. FIGS. 6A to 6C are schematic diagrams each showing a suitable arrangement relationship between the motor 51 and the drain pan 39 of the motor assembly 50 according to the present embodiment.

As shown in FIGS. 6A and 6B , the drain pan 39 is preferably arranged on the heat exchanger 31 (see FIG. 2 ) and the motor so as to extend outside the inner end portion of the motor cover 60 (inner end portion 50x of the motor 51 ). below the cover 60 . That is, the drain pan 39 may be arranged below the heat exchanger 31 (see FIG. 2 ) and the motor cover 60 , and the end of the drain pan 39 may be positioned outside the inner end of the motor cover 60 (the inner end 50x of the motor 51 ) . As a result, the air conditioner 10 can reliably receive the dew condensation water that is dripped by adhering to the motor cover 60 by the drain pan 39 .

Moreover, as shown to FIG. 6B, it is preferable that the lower part of the motor cover 60 is an inclined part which descends from the outer end part side toward the inner end part side. Thereby, the air conditioner 10 can make the lower surface of the lower part of the motor cover 60 function as the flow path R11 of the dew condensation water adhering to the motor cover 60. As a result, the air conditioner 10 can guide the dew condensation water adhering to the motor cover 60 to the drain pan 39 and receive it efficiently and reliably by the drain pan 39 .

In addition, as shown in FIG. 6C , the entire motor cover 60 may be arranged on the inner side of the outer end portion of the drain pan 39 . As a result, the air conditioner 10 can reliably receive the dew condensation water that is dripped by adhering to the motor cover 60 by the drain pan 39 .

<Configuration of cleaning section>

FIG. 7 shows the structure of the brush 41 (cleaning part) used in this embodiment. FIG. 7 is a schematic diagram showing the configuration of the brush 41 (cleaning unit).

As shown in FIG. 7 , the brush 41 has a structure in which the hair-implanted region 43a in which the fiber portion 42 is implanted is formed along the entire area of the brush base 43 .

The brush 41 is inserted into a housing portion 45 a (see FIG. 9 ) provided in the shaft 45 , and is attached to the shaft 45 . In addition, the brush 41 can be removed from the shaft 45 by being pulled out from the accommodating part 45a (refer FIG. 9).

The shaft 45 is arranged inside the indoor unit 11 so that both end portions of the shaft 45 penetrate through the two side plates 32 arranged at both end portions of the heat exchanger 31 . However, FIG. 7 shows only the side plate 32 arranged on the left side. Both ends of the shaft 45 are rotatably held by a motor 51 (motor assembly 50 ), bearing members not shown, and the like.

In the example shown in FIG. 7 , a bearing member (not shown) disposed on the right side of the shaft 45 is removed, and the brush 41 is inserted into the housing portion 45 a (see FIG. 9 ) from the right side of the shaft 45 toward the left side. example of the situation. However, the brush 41 can be inserted into the accommodating part 45a from the left side of the shaft 45 toward the right side by removing the motor 51 (motor assembly 50) arrange|positioned on the left side of the shaft 45 (refer FIG. 9).

The strength of the brush 41 is set so as to be able to maintain elasticity and to be easily inserted into the housing portion 45a of the shaft 45 (see FIG. 9 ). Thereby, the brush 41 can be easily replaced by being pulled out or inserted from the lateral direction of the shaft 45 . Moreover, the brush base part 43 (base part) of the brush 41 (cleaning part) may have elasticity which can bend. Thereby, the fan cleaning device 40 can bend the brush base 43 of the brush 41 to attach (insert) and remove (extract) to the shaft 45 . That is, the fan cleaning device 40 can bend the brush base 43 to perform replacement work. Such a fan cleaning device 40 can easily perform the replacement work of the brush 41 in a narrow space (for example, the replacement work of the brush 41 of the air conditioner 10 installed near the corner of the room).

<Configuration of other cleaning departments>

The brush 41 shown in FIG. 7 forms the hair-implantation area 43 a along the entire area of the brush base 43 . Therefore, the fiber portion 42 in the vicinity of the end portion comes into contact with the side plate 32 of the heat exchanger 31 . By using the brush 41 shown in FIG. 7 , the fan cleaning device 40 applies a load to the brush 41 when the brush 41 is rotated in order to make the brush 41 abut on the blower fan 38 when cleaning the blower fan 38 , resulting in The brush 41 gets dirty easily.

Therefore, the fan cleaning device 40 may use, for example, the brush 41A shown in FIGS. 8 to 10 instead of the brush 41 . 8 to 10 show the configuration of the brush 41A as another cleaning portion used in the present embodiment. FIG. 8 is a schematic diagram showing the configuration of the brush 41A. FIG. 9 and FIG. 10 are respectively main part perspective views showing the structure of the brush 41A.

As shown in FIGS. 8 and 10 , the brush 41A has, on the brush base 43 , a hair-implanted region 43 a where the fiber portion 42 is implanted, and a non-hair-implanted region 43 b where the fiber portion 42 is not implanted. The hair-implantation area 43a is formed in the brush base part 43 in the part other than one edge part or both ends. The non-hair-implantation regions 43b are formed at one end or both ends of the brush base 43 . The non-hair-planting region 43b is provided so as to extend from the outside to the inside of the side plate 32 .

As shown in FIG. 9 , the brush 41A is inserted into the housing portion 45 a provided in the shaft 45 and attached to the shaft 45 . In addition, the brush 41A can be detached from the shaft 45 by being pulled out from the accommodating portion 45a.

As shown in FIGS. 8 and 10 , the brush 41 has a handle portion 43 c at the end of the brush base 43 for holding the brush base 43 with a human hand.

The handle portion 43c is a portion closer to the end among the non-hair-implantation regions 43b formed at the end of the brush base 43 . As shown in FIGS. 8 and 10 , in a state where the brush 41A is attached to the shaft 45 , the handle portion 43 c protrudes from the end of the shaft 45 to the outside.

The fan cleaning device 40 can easily remove the brush 41A from the shaft 45 by holding the handle portion 43c with a human hand. At this time, the operator can change the direction of the brush 41A manually by operating the handle portion 43c, so that the brush 41A can be replaced at a position where it does not touch the blower fan 38 or the heat exchanger 31 . In addition, the brush base 43 of the brush 41A may have the elasticity which can be bent similarly to the brush base 43 of the brush 41 shown in FIG. 7 .

When the fan cleaning device 40 rotates the brush 41A to clean the blower fan 38 , the fiber portion 42 does not contact the side plate 32 of the heat exchanger 31 at one or both ends of the brush 41A. Therefore, the fan cleaning device 40 can reduce the load applied to the brush 41A when the brush 41A is rotated. In addition, the fan cleaning device 40 can make the brush 41A less likely to become dirty.

Moreover, since the fan cleaning device 40 is provided with the handle part 43c in the brush base part 43, the brush 41 can be pulled out easily from the space of the lateral direction of the heat exchanger 31.

<Main features of the air conditioner>

(1) As shown in FIG. 5 , in the air conditioner 10 of the present embodiment, the main body of the brush driving motor 51 is disposed so as to be further away from the outer end portion 34 a of the curved portion of the hairpin tube 34 provided in the heat exchanger 31 . On the outer side (left side in Fig. 5).

Such an air conditioner 10 can secure a space between the outer end portion 34 a of the curved portion of the hairpin pipe 34 provided in the heat exchanger 31 and the motor 51 . Thereby, the air conditioner 10 can suppress that the motor 51 is overcooled by the influence of the cold air transmitted from the side plate 32 of the heat exchanger 31, and dew condensation water is generated and adheres to the motor 51.

In the air conditioner 10 , since the motor 51 is disposed outside the outer end portion 34 a of the curved portion of the hairpin pipe 34 , it is possible to prevent the dew condensation water adhering to the hairpin pipe 34 and dripping from falling to the motor 51 .

(2) As shown in FIG. 5 , the main body of the motor 51 is preferably arranged such that the inner end 50x is separated from the side plate 32 and the outer end is separated from the exterior member of the casing. Thereby, the air conditioner 10 can suppress that the vibration of the motor 51 is propagated to the decorative frame 22 when the motor 51 is driven, and noise is generated. In addition, in the example shown in FIG. 3, the motor 51 may be arrange|positioned so that the inner end part 50x of the motor 51 may be spaced apart from the side plate 32, and the outer end part may be spaced apart from the exterior member of a case.

(3) As shown in FIGS. 6A and 6B , the drain pan 39 is arranged below the heat exchanger 31 and the motor cover 60 so as to extend to the outside of the inner end portion of the motor cover 60 . That is, the drain pan 39 is arranged below the heat exchanger 31 and the motor cover 60 , and the end portion of the drain pan 39 is positioned outside the inner end portion of the motor cover 60 . As a result, the air conditioner 10 can reliably receive the dew condensation water that is dripped by adhering to the motor cover 60 by the drain pan 39 .

(4) As shown in FIG. 6B , the lower portion of the motor cover 60 is preferably an inclined portion that descends from the outer end side toward the inner end side. Thereby, the air conditioner 10 can make the lower surface of the lower part of the motor cover 60 function as the flow path R11 of the dew condensation water adhering to the motor cover 60. Therefore, the air conditioner 10 can guide the dew condensation water adhering to the motor cover 60 to the drain pan 39 and receive it efficiently and reliably by the drain pan 39 .

(5) As shown in FIG. 6C , the entire motor cover 60 is preferably arranged on the inner side of the outer end portion of the drain pan 39 . As a result, the air conditioner 10 can reliably receive the dew condensation water that is dripped by adhering to the motor cover 60 by the drain pan 39 .

(6) As shown in FIG. 3 , the air conditioner 10 preferably includes a protruding portion 32p formed to protrude from the outer surface of the side plate 32 so as to cover the upper side of the inner end portion of the motor 51 . The protruding portion 32p functions as a dew preventing mechanism that suppresses adhesion of dew condensation water to the motor 51 . Thereby, the air conditioner 10 can suppress that the dew condensation water which adheres to the hairpin pipe 34 and drips drips to the motor 51 from falling.

(7) As shown in FIG. 4 , it is preferable that a groove 62 for accommodating the lead wire 53 of the motor 51 is formed in the lower portion of the motor cover 60 . The motor cover 60 can be accommodated in the accommodating portion 61 without applying a load to the lead wire 53 by passing the lead wire 53 through the groove 62 . In addition, the lead wire 53 can be arranged so that the lead wire 53 passes under the rotating shaft 52 by pulling the lead wire 53 to the outside through the groove 62 provided in the lower part of the inner peripheral surface of the housing portion 61 in the motor cover 60 . Thereby, even if dew condensation water drips toward the direction of the lead wire 53, for example, the motor cover 60 can arrange|position the lead wire 53 in the direction which does not easily get on the dew condensation water. Such a motor cover 60 can prevent the dew condensation water from adhering to the lead wires 53, so that the failure rate of the motor can be reduced.

(8) As shown in FIG. 4 , the main body of the motor 51 is preferably covered with the heat insulating material 54 . As a result, the air conditioner 10 can prevent the dew condensation water from being generated and adhering to the motor 51 due to excessive cooling of the motor 51 .

(9) As shown in FIGS. 8 to 10 , it is preferable that the brush 41A (cleaning portion) is provided with a non-hair-planting region 43b where the fiber portion 42 is not planted at one end or both ends of the brush base 43 (base). The non-hair-implantation region 43b can be provided so as to extend from the outside to the inside of the side plate 32 . Thereby, when the air conditioner 10 rotates the brush 41A to clean the blower fan 38, the fiber portion 42 can be prevented from contacting the side plate 32 of the heat exchanger 31 at one or both end portions of the brush 41A. Therefore, when the air conditioner 10 rotates the brush 41A, the load applied to the brush 41A can be reduced. In addition, the air conditioner 10 can make the brush 41A less likely to become dirty.

(10) As shown in FIGS. 8 to 10 , the end portion of the brush base 43 of the brush 41A preferably protrudes outward from the end portion of the shaft 45 as the handle portion 43c. Thereby, since the operator of the air conditioner 10 can hold the handle portion 43c, the brush 41 can be easily pulled out from the space in the lateral direction of the heat exchanger 31 when replacing the brush 41A.

As described above, according to the air conditioner 10 of the first embodiment, it is possible to suppress the dew condensation water from adhering to the main body of the motor 51 of the fan cleaning device 40 .

[Embodiment 2]

The motor cover 60 of the motor unit 50 (refer to FIGS. 3 and 4 ) of the first embodiment is constituted by a single member.

On the other hand, in Embodiment 2, the motor unit 50A in which the motor cover 60 is constituted by a plurality of (for example, two) members is provided (see FIGS. 11 to 13 ).

Hereinafter, the configuration of the motor unit 50A according to the second embodiment will be described with reference to FIGS. 11 to 12 . FIG. 11 is a schematic diagram showing the configuration of the motor unit 50A. FIG. 12 is an exploded view showing the configuration of the motor unit 50A. FIG. 13 is a schematic cross-sectional view showing the internal structure of the motor assembly 50A.

As shown in FIG. 11 , the motor unit 50A of the second embodiment is compared with the motor unit 50 (see FIG. 3 ) of the first embodiment, and the motor cover 60 includes two of the first motor cover 71 and the second motor cover 72 Components are different. Here, the first motor cover 71 is a member on the side (outer side) away from the side plate 32 of the heat exchanger 31 , and the second motor cover 72 is a side (inner side) close to the side plate 32 of the heat exchanger 31 . ) components are described. In addition, in the example shown in FIG. 11, although the spacer 69 shown in FIG. 5 is not used, the motor assembly 50A may be attached to the side plate 32 of the heat exchanger 31 through the spacer 69 shown in FIG.

As shown in FIG. 12 , the first motor cover 71 includes a housing portion 61 for housing the outer portion of the main body of the motor 51 , and a fixing portion 66 connected to the side plate 32 of the heat exchanger 31 and the like with screws 65 . A groove 62 for accommodating the lead wire 53 of the motor 51 is formed in the lower portion of the inner peripheral surface of the accommodating portion 61 . The groove 62 is formed so as not to penetrate the inner wall surface (the left wall surface in FIG. 12 ) of the housing portion 61 .

On the other hand, the second motor cover 72 has an accommodation portion 61 a that accommodates the inner portion of the main body of the motor 51 , and a fixing portion 66 a that is coupled to the first motor cover 71 with screws 55 . Similar to the housing portion 61 of the first motor cover 71 , a groove 62 a for housing the lead wire 53 of the motor 51 is formed in the lower portion of the inner peripheral surface of the housing portion 61 a. The groove 62a is formed so as to penetrate through the inner wall surface (the right wall surface in FIG. 12 ) of the accommodating portion 61a.

The groove 62 of the first motor cover 71 and the groove 62a of the second motor cover 72 have a structure in which they communicate with each other. The lead wire 53 of the motor 51 is pulled out to the outside of the motor cover 60 through the groove 62 of the first motor cover 71 and the groove 62 a of the second motor cover 72 .

The motor assembly 50A is assembled as follows. First, the belt-shaped heat insulating material 54 is wound around the outer periphery of the main body of the motor 51 (see open arrow A21). Next, the motor 51 on which the heat insulating material 54 is wound is accommodated in the accommodating portion 61 of the first motor cover 71 (refer to the hollow arrow A22). At this time, the lead wire 53 of the motor 51 is pulled out to the outside of the first motor cover 71 through the groove 62 of the first motor cover 71 . Next, the motor 51 is accommodated in the accommodating portion 61a of the second motor cover 72 (refer to the hollow arrow A23). At this time, the lead wire 53 of the motor 51 is pulled out to the outside of the second motor cover 72 through the groove 62 a of the second motor cover 72 . In this way, the motor assembly 50A is assembled.

FIG. 13 shows a schematic side cross-sectional structure of the motor assembly 50A. 13, the lead wire 53 of the motor 51 is removed and shown. As shown in FIG. 13 , the motor unit 50A is attached to the side plate 32 in a state where the entire circumference of the motor 51 is sealed by the first motor cover 71 and the second motor cover 72 . Such a motor assembly 50A can efficiently suppress the adhesion of dew condensation water to the motor 51 .

As described above, according to the second embodiment, as in the first embodiment, it is possible to efficiently suppress the adhesion of the dew condensation water to the main body of the motor 51 of the fan cleaning device 40 .

In addition, the technical scope of the present invention is not limited to the above-described embodiments, and various changes and modifications can be added without departing from the gist of the present invention.

For example, the above-described embodiments are described in detail in order to explain the gist of the present invention in an easy-to-understand manner. Therefore, the present invention is not limited to having all the components described. In addition, in the present invention, other constituent elements can be added to the constituent elements, or some of the constituent elements can be changed to other constituent elements. In addition, the present invention can also delete some of the constituent elements.

In addition, for example, the motor unit 50A (refer to FIGS. 11 to 13 ) of the above-described second embodiment can be modified like the first to fourth modifications shown in FIGS. 14 to 17 .

<1st Variation>

FIG. 14 is a schematic view showing the internal structure of the motor unit 50B according to the first modification. As shown in FIG. 14 , the motor unit 50B of the first modification is different from the motor unit 50A of the second embodiment (see FIGS. 11 to 13 ) in the following points.

(1) The first motor cover 71 has the fixing portion 101 coupled to the second motor cover 72 by the screws 111 .

(2) The second motor cover 72 has the fixing portion 102 connected to the side plate 32 by the screws 112 .

Similar to the motor unit 50A (see FIGS. 11 to 13 ) of Embodiment 2, the motor unit 50B of the first modification can efficiently suppress the adhesion of dew condensation water to the main body of the motor 51 of the fan cleaning device 40 . In addition, the motor 51 is accommodated by the first motor cover 71 and the second motor cover 72 .

<Second modification>

FIG. 15 is a schematic view showing the internal structure of the motor unit 50C according to the second modification. As shown in FIG. 15 , the motor unit 50C of the second modification is different from the motor unit 50B of the first modification (see FIG. 14 ) in the following points.

(1) The motor cover 60 is composed of only the first motor cover 71 .

(2) The side plate 32 includes the abutting portion 32Z that is formed to protrude from the outer surface of the side plate 32 in a threaded protrusion shape so as to abut against the inner end portion of the motor cover 60 .

The motor unit 50C of the second modification can reduce the number of parts of the second motor cover 72 as compared with the motor unit 50B (see FIG. 14 ) of the first modification. In addition, it is preferable that the motor cover 60 and the contact part 32Z (screw protrusion) have a structure which covers at least the whole upper part of the main body of the motor 51 . Thereby, the motor unit 50C of the second modification can efficiently suppress the adhesion of the dew condensation water to the main body of the motor 51 of the fan cleaning device 40 .

<The third modification>

FIG. 16 is a schematic view showing the internal structure of the motor unit 50D according to the third modification. As shown in FIG. 16 , the motor unit 50D of the third modification is different from the motor unit 50B of the first modification (see FIG. 14 ) in the following points.

(1) The first motor cover 71 has the fixing portion 104 fastened to the side plate 32 by the screws 111 , and the fixing portion 104 is protruded in a direction not overlapping with the fixing portion 102 of the second motor cover 72 .

(2) The motor 51 has the fixing portion 103 connected to the second motor cover 72 by the screws 113 .

(3) The first motor cover 71 has the cover portion 67 that covers the upper portion of the fixing portion 102 of the second motor cover 72 .

In the motor unit 50D of the third modification, the cover portion 67 can function as a dew prevention mechanism for suppressing the adhesion of dew condensation water to the motor 51 . Therefore, the motor unit 50D of the third modification can efficiently suppress the adhesion of the dew condensation water to the main body of the motor 51 of the fan cleaning device 40 . In addition, the cover portion 67 functions as a positioning mechanism that abuts on the side plate 32 and determines the position of the motor unit 50D. Thereby, the motor unit 50D can be stably arranged at a desired position.

<4th Variation>

FIG. 17 is a schematic view showing the internal structure of the motor unit 50E according to the fourth modification. As shown in FIG. 17 , the motor unit 50E of the fourth modification is different from the motor unit 50D of the third modification (see FIG. 16 ) in the following points.

(1) The first motor cover 71 does not have the cover portion 67 (see FIG. 16 ).

(2) However, the mating surface of the first motor cover 71 and the second motor cover 72 has a lap structure 68 that engages with the respective surfaces.

In the motor unit 50E of the fourth modification, the overlapping structure 68 can function as a dew prevention mechanism for suppressing the adhesion of dew condensation water to the motor 51 . Therefore, the motor unit 50E of the fourth modification can efficiently suppress the adhesion of the dew condensation water to the main body of the motor 51 of the fan cleaning device 40 .

Symbol Description

10—air conditioner, 11—indoor unit, 12—outdoor unit, 13—connecting piping, 21—chassis, 22—decoration frame (exterior component), 23—front panel, 24—air suction port, 25—air outlet, 26—up and down wind direction plate, 31—heat exchanger, 31a—radiating fin, 32—side plate, 32p—protruding part, 32Z—abutting part (thread protruding), 34—hairpin tube, 34a—outside of the curved part End, 38—Blower fan, 39—Drain pan, 40—Fan cleaning device, 41—Brush (sweeping part), 42—Fiber part, 43—Brush base (base), 43a—Fressing area, 43b—Non-flooding Area, 43c—handle part, 43z—track part, 45—shaft, 45a—receiving part, 50, 50A—motor assembly, 50x—inner end, 50y—outer end, 50z—matching surface, 51—motor (drive mechanism), 52—rotating shaft, 53—lead wire, 54—insulation material, 55, 65, 111, 112, 113—screws, 56, 66, 101, 102, 103—fixed part, 60—motor cover, 61, 61a—accommodating portion, 62, 62a—groove (for wire pulling), 67—cover portion (positioning mechanism), 68—overlapping structure, 69—spacer, 71—first motor cover, 72—second motor cover .

Claims (14)

1, air conditioner, characterized in that,

the disclosed device is provided with:

a heat exchanger;

an air supply fan;

a cleaning part for cleaning the air supply fan; and

a motor disposed outside the side plate of the heat exchanger and driving the cleaning unit,

the body of the motor is arranged outside the outer end of the bent portion of the hairpin tube provided in the heat exchanger.

2, air conditioner, characterized in that,

the disclosed device is provided with:

a heat exchanger;

an air supply fan;

a cleaning part for cleaning the air supply fan;

a motor disposed outside the side plate of the heat exchanger and driving the cleaning unit;

a motor cover covering the main body of the motor; and

a drain pan for receiving the condensed water dripping from the heat exchanger,

the drain pan is disposed below the heat exchanger and the motor cover, and an end of the drain pan is located outside an inner end of the motor cover.

3. An air conditioner according to claim 1 or 2,

the motor is arranged such that an inner end portion is separated from the side plate and an outer end portion is separated from an exterior member of the casing.

4. An air conditioner according to claim 1 or 2,

the motor is provided with a protruding part which is formed by protruding on the outer surface of the side plate in a mode of covering the upper part of the inner end part of the motor.

5. An air conditioner according to claim 1 or 2,

the cleaning part has a base part implanted with a fiber part,

the end of the base is provided with a region where the fiber part is not flocked.

6. The air conditioner according to claim 5,

the area where the fiber part is not flocked is provided so as to extend from the outside to the inside of the side plate.

7. The air conditioner according to claim 2,

the lower portion of the motor cover is an inclined portion that descends from an outer end portion side toward an inner end portion side.

8. The air conditioner according to claim 2,

the entire motor cover is disposed inside the outer end of the drain pan.

9. The air conditioner according to claim 2,

a groove for accommodating a lead wire of the motor is formed in a lower portion of an inner peripheral surface of the motor cover.

10. The air conditioner according to claim 2,

the motor includes a heat insulating material covering a peripheral surface of a main body of the motor.

11. The air conditioner according to claim 2,

the side plate includes an abutting portion formed to protrude from an outer surface of the side plate so as to abut on an inner end portion of the motor cover,

the motor cover and the contact portion are configured to cover at least an upper portion of the entire body of the motor.

12. The air conditioner according to claim 2,

the motor control device is provided with a cover part which is formed on the motor cover in a mode of covering the upper part of the inner end part of the motor.

13. The air conditioner according to claim 12,

the cover portion functions as a positioning mechanism that abuts against the side plate to determine the position of the motor.

14. The air conditioner according to claim 2,

the motor cover is composed of a plurality of cover members,

the mating surfaces of the cover members are of an overlapping configuration.

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