Background
For example, patent document 1 discloses a configuration in which an indoor unit of an air conditioner including an air blower device includes a plurality of sirocco fans serving as air blowing fans. The plurality of sirocco fans are housed inside the casing, respectively. The housing includes circular suction ports on both sides in the axial direction of the cylindrical shape of the sirocco fan, and a rectangular discharge port is formed by opening at the front end of a flared member formed to protrude. The casing is a necessary member for increasing the pressure so that the air sucked by the rotation of the blower fan is blown out from the outlet port.
In general, the housing is divided into two parts so that the sirocco fan can be housed therein, and in the configuration of cited document 1, the housing is divided vertically and is composed of two parts, an upper housing and a lower housing. The upper and lower housings are fixed to the casing.
A fan motor that drives the blower fan, a bearing that rotatably supports a rotary shaft that transmits the driving force of the fan motor to the blower fan, and the like are also fixed to the housing. In the structure of patent document 1, a bearing member having a bearing is attached to the rotating shaft, and a support member supporting the bearing member is fixed to the housing.
Documents of the prior art
Patent document
Patent document 1: japanese unexamined patent application publication No. 2012-97930
Disclosure of Invention
Technical problem to be solved by the invention
However, in the structure of patent document 1, in which the upper case and the lower case divided into two parts are fixed to the housing, the number of components increases and the number of mounting steps increases. In addition, in a structure in which the fan motor, the bearing, the support member, and the like are sequentially fixed to the casing from the housing, when the rigidity of the casing is insufficient, even if the shaft alignment is performed at the time of assembly, the shaft of the rotating shaft connecting the fan motor and the bearing is misaligned. If the rotation axis is displaced, vibration and noise are likely to occur. In order to suppress the generation of vibration and noise and to stably rotate the blower fan, the casing needs to have sufficient rigidity.
In addition, although the shaft alignment is an operation of aligning the fan motor and the bearing or the support, high positional accuracy is required for the mounting position of each component at the time of assembly. Further, since the casing and the blower fan housed therein also need to be in an appropriate positional relationship, alignment is required. In the configuration including a plurality of blower fans as in patent document 1, the number of housings increases, and therefore the number of components to be aligned becomes extremely large.
An object of one embodiment of the present invention is to provide a blower device in which the number of components is reduced, alignment between the components is facilitated, and a blower fan can be rotated stably.
Means for solving the problems
In order to solve the above problem, an air blowing device according to an aspect of the present invention includes: the blower fan includes a casing, a motor, a rotary shaft that transmits a driving force of the motor, a blower fan fixed to the rotary shaft, a housing that houses the blower fan, a motor fixing member that fixes the motor, and a part of the housing that houses the blower fan, a part of the motor fixing member that fixes the motor, or both of them, which are integrally formed with the casing.
Advantageous effects
According to one aspect of the present invention, there is provided a blower device in which the number of components is reduced, alignment between the components is facilitated, and a blower fan can be rotated stably.
Detailed Description
(first embodiment)
Hereinafter, an embodiment of the present invention will be described in detail. In the present embodiment, an air blowing device mounted in an indoor unit of an air conditioner is exemplified.
(construction of air blowing device 1)
Fig. 1 is a perspective view showing a blower device 1 according to a first embodiment of the present invention, in which the front side having a blowout opening 53 faces forward. Fig. 2 is a perspective view showing a state where a lower surface side member is detached from the air blower 1, and a front surface side having the blow-out opening 53 faces upward. Fig. 3 is a front view of the fan coupling 2 detached from the blower 1. Fig. 4 is a longitudinal sectional view of the blower 1.
As shown in fig. 1 and 2, the air blowing device 1 includes a casing 10, and four air blowing fans 4 and one fan motor (motor) 3 arranged along the longitudinal direction in the casing 10. The fan motor 3 is a two-shaft motor, and is located at the center of four blower fans 4 arranged side by side, and two blower fans 4 are connected to one motor shaft 3 a.
As shown in fig. 2, the blower fan 4 is a so-called sirocco fan in which two impellers 4a are connected to one common disk wall 4 b. Joint members 5 for fixing the blower fan 4 to the rotary shaft are provided at the center of the circular disk wall 4b so as to protrude from both sides. The four blower fans 4 and the fan motor 3 are coupled (integrated) via shaft members 6 and 7 constituting the joint member 5 and the rotation shaft. Hereinafter, the member connecting the blower fan 4, the fan motor 3, and the rotation shaft is referred to as a fan connector 2.
As shown in fig. 3, motor shafts 3a on both sides of the fan motor 3 are connected to joint members 5 on the fan motor 3 side of the two blowing fans 4 adjacent to the fan motor 3. The joint member 5 of the two blower fans 4 on the side of the counter fan motor 3 opposite to the side of the fan motor 3 is connected to one end of the shaft member 6. The other end of the shaft member 6 is connected to a joint member 5 on the fan motor 3 side of each of the adjacent blower fans 4. Then, the joint member 5 of the two adjacent blower fans 4 on the side of the counter fan motor 3 is connected to one end side of the shaft member 7.
The motor shaft 3a, the shaft members 6 and 7, and the joint member 5 of the blower fan 4 are connected by screw fastening in a state where the ends of the motor shaft 3a and the shaft members 6 and 7 are inserted into the joint member 5. The rotational force of the fan motor 3 can be transmitted to the plurality of blower fans 4 without being displaced by the screw fastening and the firm connection. Hereinafter, a single shaft including the motor shaft 3a, the shaft members 6 and 7, and the plurality of joint members 5 is referred to as a rotating shaft 8. The rotary shaft 8 is a member that transmits the driving force of the fan motor 3.
A bearing 20 is attached to the other end side of each shaft member 7 corresponding to both end portions of the rotary shaft 8. The bearing portions 20 include bearings (not shown) for rotatably receiving end portions of the rotary shaft 8 and support members for supporting the bearings, and the bearing portions 20 attached to both end portions of the rotary shaft 8 are detachable from fixing portions 30 provided at both end portions 10a in the longitudinal direction of the housing 10 shown in fig. 2. The bearing 20 is fitted into an insertion hole 31 (see fig. 7) formed in the fixing portion 30 and having an open bottom, from the bottom side (lower side), whereby the fan coupling 2 can be attached to the casing 10. Although not shown, the bearing portion 20 and the fixing portion 30 have a temporary fixing structure, and the bearing portion 20 can be temporarily fixed by being inserted into the insertion hole 31 of the fixing portion 30.
As shown in fig. 1 and 3, each blower fan 4 is housed in a casing 11 provided for each fan. The casing 11 has circular suction ports 11a on both sides in the axial direction of the cylindrical blower fan 4, and a rectangular discharge port 11c is formed at the tip end of a protruding bell-mouth member 11 b.
As shown in fig. 1, in the present embodiment, the casing 11 is divided into two parts, an upper casing 11-1 covering the upper half of the blower fan 4 and a lower casing 11-2 covering the lower half of the blower fan 4. Further, a motor cover (motor fixing member) 12 for fixing the fan motor 3 is also divided into two parts, an upper motor cover 12-1 for covering the upper half of the fan motor 3 and a lower motor cover 12-2 for covering the lower half of the fan motor 3. Then, among these, four upper cases 11-1 and upper motor cover 12-1 are integrally formed with the casing 10.
(case 10, lower case 11-2 and lower motor cover 12-2)
Fig. 5 is a perspective view showing the casing 10 of the blower 1, in which the front side having the outlet opening 53 faces upward. Fig. 6 is a longitudinal sectional view of the housing 10. Fig. 7 is a perspective view showing a state in which lower case 11-2 and lower motor cover 12-2 are attached to casing 10, and the front side having blow-out opening 53 faces upward. Fig. 8 is a perspective view showing a state in which lower case 11-2 and lower motor cover 12-2 are attached to casing 10, and the front side having blow-out opening 53 faces upward. Fig. 9 is a perspective view of lower housing 11-2, and fig. 10 is a perspective view of lower motor cover 12-2.
As shown in fig. 5 and 6, four upper cases 11-1 and an upper motor cover 12-1 are integrally formed with the casing 10. In other words, the four upper cases 11-1 and the upper motor cover 12-1 are made of the same resin material as the housing 10, and the resin material is poured into one molding die and molded. The upper casing 11-1 has an upper half of the suction port 11a and a bell-mouth member 11b, and includes an upper end 11ct of the discharge port 11 c.
Then, as shown in fig. 7 and 8, four lower cases 11-2 and one lower motor cover 12-2 are mounted on the casing 10. Specifically, the lower housing 11-2 as another component is fixed to the upper housing 11-1 integrally formed with the housing 10 in a fitting manner. Similarly, a lower motor cover 12-2 as another component is fixed to an upper motor cover 12-1 formed integrally with the housing 10 in a fitted manner.
As shown in fig. 9, the lower casing 11-2 has a lower half of the suction port 11a and includes a lower end portion 11cu of the discharge port 11 c. Reference numeral 900 is a perspective view showing the inside of the lower housing 11-2, and reference numeral 901 is a perspective view showing the outside of the lower housing 11-2. As indicated by reference numerals 900 and 901, a part 13a of an outer member 13 (see fig. 1 and 8) constituting the outer shape of the air blower 1 is integrally provided (integrated) on the lower end portion 11cu side of the air outlet 11c of the lower casing 11-2. The portion 13a of the outer member 13 does not need to be made of the same material as the lower casing 11-2, and may be attached to the lower end portion 11cu side of the outlet port 11c of the lower casing 11-2 by screws or the like. A part 13a of the outer member 13 can also be a handle to be held by an operator when the lower housing 11-2 is removed from the housing.
An end of the lower case 11-2 opposite to the lower end 11cu of the outlet 11c is provided with an engagement claw 11-2a that engages with a mounting hole 10b (see fig. 5) formed in the lower rear surface of the housing 10. The engaging claws 11-2a are engaged with the mounting holes 10b (see fig. 5) and fixed to the housing 10. The suction port 11a of the lower housing 11-2 is formed with an insertion claw 11-2b to be inserted into a receiving portion (not shown) on the housing 10 side.
On the other hand, as shown in fig. 10, the lower motor cover 12-2 has a lower half of a shaft opening 12a through which the motor shaft 3a protrudes. The circumferential end of the circumferential surface of the lower motor cover 12-2 is formed with a fixing piece 12-2a for fixing to the upper motor cover 12-1 integrally formed on the casing 10. Reference numeral 1000 is a perspective view showing the inside of lower motor cover 12-2, and reference numeral 1001 is a perspective view showing the outside of lower motor cover 12-2. In a state where fixing piece 12-2a is abutted against upper motor cover 12-1 formed integrally with housing 10, lower motor cover 12-2 is fixed with screws or the like.
The fan motor 3 is housed inside the motor cover 12 with the motor shaft 3a extended. In the fan motor 3, a base portion (non-rotating) from which a motor shaft 3a extends is fixed to the motor cover 12 via a rubber member (not shown) fitted in the shaft opening 12 a.
As shown in fig. 4, the housing 11 and the motor cover 12 are divided by a dividing line L passing through a shaft center P of the rotating shaft 8. The housing 11 and the motor cover 12 are divided into two parts by a plane parallel to the axis P of the axis P passing through the rotating shaft 8.
As a more preferable configuration, in the present embodiment, as shown in fig. 5 and 8, the front surface having the outlet opening 53 has a flat surface portion H continuous in the longitudinal direction, that is, the left-right direction, and the left-right surface corresponding to both end portions 10a in the longitudinal direction has a flat surface portion H continuous in the front-rear direction. That is, the casing 10 has a suction opening 52 on the upper surface and a discharge opening 53 on the front surface. Further, the housing 10 has a rear face 10c, and the rear face 10c forms a rear wall with respect to a planar portion H continuous in the left-right direction. Further, the housing 10 has a rear surface 10c, a front surface having a flat surface portion H continuous in the longitudinal direction, i.e., the left-right direction, and a left-right surface having a flat surface portion H continuous in the front-rear direction. Then, the fixing portion 30 for fixing the bearing portion 20 of the fan coupling 2 is formed on the flat portions H on the left and right surfaces by integral molding.
(attachment/detachment of Fan connection 2)
Next, the attachment and detachment of the fan coupling 2 to and from the housing 10 will be described with reference to fig. 1, 2, and 3. First, the detachment of the fan coupling 2 will be described.
When the fan coupling 2 is detached, first, the lower side components (see fig. 1) such as the four lower cases 11-2, the one lower motor cover 12-2, and the outer member 13 positioned on the lower side of the blower 1 are detached. This makes the fan coupling 2 detachable as shown in fig. 2. Further, since a part 13a of the exterior member 13 is provided integrally with the lower housing 11-2, it can be removed together by removing the lower housing 11-2.
Next, screws (not shown) for screwing the bearing portion 20 and the fixing portion 30 on the casing 10 side are removed from both ends of the fan coupling 2. Although not shown, since the bearing portion 20 and the fixing portion 30 have a fixing structure for temporary fixing, even if the screws on both sides of the fan coupling 2 are released, the fan coupling 2 does not fall down due to its own weight, and the operator does not need to hold his/her hands on the fan coupling 2. After the screw is removed, the temporary fixation is released and the bearing portion 20 is pulled out from the fixing portion 30.
On the other hand, when the fan is attached, both ends of the fan coupling 2 are gripped, the bearing 20 is inserted into the fixing portion 30, and the fan is temporarily fixed by the above-described fixing structure for temporary fixing. Thereafter, the bearing portion 20 and the fixing portion 30 are screwed together. Then, the lower side components (see fig. 1) such as the four lower cases 11-2, the one lower motor cover 12-2, and the outer member 13 are attached to the lower side of the blower 1. Further, since a part 13a of the exterior member 13 is provided integrally with the lower housing 11-2, it can be mounted together by mounting the lower housing 11-2.
[ Effect ]
As described above, in the blower device 1, the plurality of upper cases 11-1 and the upper motor cover 12-1 are integrally formed in the casing 10. This reduces the number of parts, and eliminates the need for a step of mounting upper housing 11-1 and upper motor cover 12-1 on casing 10, thereby simplifying the mounting step.
In addition, not only is the effect of reducing the number of components, but also the rigidity (strength) of the casing 10 can be improved by integrally molding the upper casing 11-1 and the upper motor cover 12-1 to the casing 10. This makes it difficult to deform the casing 10 such as twisting and warping, and maintains long-term axial alignment during mounting, thereby suppressing the generation of vibration and noise due to axial misalignment of the rotating shaft, and enabling stable rotation of the blower fan.
The housing 10 is formed with a part of the housing 11 and the motor cover 12, and the remaining parts of the housing 11 and the motor cover 12 are fitted to complete the housing 11 and the motor cover 12. Therefore, alignment is easily performed without positional deviation such as a configuration in which the case 11 and the motor cover 12, which are formed of other members, are attached to the housing.
Further, in the present embodiment, the fixing portion 30 to which the bearing portion 20 is attached is also formed by integral molding with the housing 10, and there is no positional deviation between the fixing portion 30 and the housing 10, in which the bearing portion 20 is attached to the rotating shaft 8 of the fan coupling 2. This eliminates positional deviation of the housing 11, the motor cover 12, and the fixing portion 30 with respect to the casing 10, and allows the fan coupling 2 to have a structure in which the shaft of the rotating shaft 8 and the positions of the members are not displaced and alignment is easy.
In the above configuration, the housing 11 and the motor cover 12 are divided by a dividing line L passing through the axis of the rotating shaft 8. Therefore, even if the upper housing 11-1 and the upper motor cover 12-1 are formed, problems such as difficulty in being pulled out from the molding die when the housing 10 is manufactured do not occur.
In the present embodiment, a more preferable configuration is one in which a front surface having the outlet opening 53 has a flat surface portion H continuous in the longitudinal direction, i.e., the left-right direction, and a left-right surface corresponding to both end portions 10a in the longitudinal direction has a flat surface portion H continuous in the front-rear direction. As a result, the rigidity of the housing 10 can be effectively improved as compared with a flat-plate-shaped housing having the rear face 10c constituting the rear wall as the main part, and a strong structure with little distortion or warpage can be obtained.
Further, since the housing 11 and the motor cover 12 are divided in the vertical direction, the fan connecting member 2 can be attached to and detached from the lower side of the blower 1. The air blower is not limited to a wall-mounted type or a ceiling-mounted type, and is configured to be attached to and detached from the lower side because the lower side of the air blower is an open space, so that it is not necessary to work in the ceiling, and the air blower can be attached to and detached from the ceiling even if there is no sufficient space between the air blower and the ceiling or a side of the air blower.
(modification example)
In the blower 1 of the first embodiment, the plurality of upper cases 11-1 and the upper motor cover 12-1 are integrally formed with the casing 10. However, for example, a configuration in which only the plurality of upper cases 11-1 or only the upper motor cover 12-1 is integrally formed with the housing 10 is also within the scope of the invention. Similarly, the configuration is not limited to the case 10 in which all of the upper cases 11-1 are integrally formed.
Further, in the blower device 1 of the above embodiment, the lower casing 11-2 is provided integrally with the part 13a of the outer member 13, but the lower motor cover 12-2 may be provided integrally with the part 13a of the outer member 13.
In the blower 1 of the above embodiment, the division direction of the casing 11 and the motor cover 12 is the vertical direction, but the present invention is not limited to the vertical direction.
In the air blowing device 1 of the above embodiment, a plurality of sirocco fans are described as an example of the air blowing fan, but the present invention is not limited to this, and a cross flow fan or the like can be applied to the present invention.
(second embodiment)
The following description relates to other embodiments of the present invention. For convenience of explanation, members having the same functions as those described in the above embodiments are given the same reference numerals, and description thereof will not be repeated.
In the present embodiment, an indoor unit of an air conditioner including the air blowing device 1 described in the first embodiment will be described. Fig. 11 is a perspective view showing an indoor unit 50 of an air conditioner according to a second embodiment. Fig. 12 is a sectional perspective view showing the internal structure of the indoor unit 50.
As shown in fig. 11 and 12, the indoor unit 50 includes the casing 10 and the fan assembly 2 constituting the blower 1, and includes a heat exchanger 51 on the front side of the fan assembly 2. The upper surface of the casing 10 is provided with a suction opening 52, and a filter 54 is provided on the suction opening 52.
The opening portion of the front of the casing 10 becomes the blow-out opening 53. The air outlets 11c of the plurality of casings 11 corresponding to the plurality of blower fans 4 are arranged toward the outlet opening 53. The heat exchanger front 51 is disposed between the outlet port 11c and the outlet opening 53.
The heat exchanger 51 is disposed in a state in which the upper portion is inclined forward relative to the lower portion, and the lower portion is disposed in a state in which it is closer to the blower fan 4. By arranging the heat exchanger 51 in an inclined state, the surface area can be increased while suppressing the height of the indoor unit 50 as compared with the case of arranging the heat exchanger in a straight state. A drain pan 55 is provided below the heat exchanger 51, and the drain pan 55 receives water (drain water) generated by heat exchange of the heat exchanger 51.
In addition, a main panel 56 for opening and closing the outlet opening 53 is provided on the front surface of the casing 10. The main panel 56 is formed in a plate shape that is gently curved between an upper edge portion and a lower edge portion. The main panel 56 is curved in a concave direction when viewed from the front. The main panel 56 is driven by, for example, a drive mechanism (not shown) having an arm and a motor at two left and right positions supporting the main panel 56. The main panel 56 closes the outlet opening 53 when the indoor unit 50 is stopped, and opens the outlet opening 53 when the indoor unit 50 is operated.
Note that the member denoted by reference numeral 57 in the drawing is a sub-panel, and the sub-panel 57 is also opened during operation. The main panel 56 is normally opened with the lower end side as the upper side of the turning shaft during cooling (the state shown in fig. 1 and 2), is normally opened with the upper end side as the lower side of the turning shaft during heating,
(conclusion)
The air blowing device 1 according to the present embodiment includes: a casing 10, a motor (fan motor 3), a rotary shaft 8 for transmitting a driving force of the motor, a blower fan 4 fixed to the rotary shaft 8, a housing 11 for housing the blower fan 4, and a motor fixing member for fixing the motor, wherein a part of the housing 11, a part of the motor fixing member, or both are integrally formed with the casing 10.
The air blowing device 1 according to embodiment 2 of the present invention can be configured as follows: in the aspect 1, the housing 11, the motor fixing member, or both of them are divided into two parts, and one of the divided parts is integrally formed with the housing 10.
The air blowing device 1 according to embodiment 3 of the present invention can be configured as follows: in the aspect 2, the housing 11, the motor fixing member, or both of them may be divided into two parts by a plane passing through the axis of the rotary shaft 8 and parallel to the axis.
The air blowing device 1 according to embodiment 4 of the present invention can be configured as follows: in the aspect 2 or 3, the housing 11 or the motor fixing member, or both of them are further divided into two in the up-down direction.
The air blowing device 1 according to embodiment 5 of the present invention can be configured as follows: in any of embodiments 1 to 4, the casing 10 further includes an intake port 52 on an upper surface, an outlet opening 53 on a front surface, flat surface portions H continuous in the left-right direction on a rear surface 10c and the front surface, and flat surface portions H continuous in the front-rear direction on the left and right surfaces.
The air blowing device 1 according to embodiment 6 of the present invention can be configured as follows: in any of aspects 1 to 4, the remaining portion of the housing 11, the motor fixing member, or both, which is not integrally molded with the casing 10, is integrated with a portion 13a of an outer member 13 constituting an outer shape of the blower 1.
The air blowing device 1 according to embodiment 7 of the present invention can be configured as follows: in embodiment 4, the motor, the rotary shaft 8, and the blower fan 4 are attached to and detached from the housing 10 from the lower surface side in a state in which they are coupled.
The air blowing device 1 according to embodiment 8 of the present invention can be configured as follows: in any of aspects 1 to 7, the blower fan 4 is a sirocco fan and includes a plurality of sirocco fans.
An indoor unit 50 of an air conditioner according to embodiment 9 of the present invention is characterized by including the blower 1 according to any one of embodiments 1 to 8.
The present invention is not limited to the above embodiments, and various modifications can be made within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. Further, by combining the technical means disclosed in the respective embodiments, new technical features can be formed.
Description of the reference numerals
1 air supply device
2 Fan connection
3 fan motor
3a motor shaft
4 blowing fan
8 rotating shaft
10 casing
11 outer cover
11-1 upper shell
11-2 lower shell
11-2a snap-in claw
11a suction inlet
11b bellmouth component
11c blow-out port
11ct upper end
11cu lower end
12 motor cover
12-1 upper motor cover
12-2 lower motor cover
12-2a fixing sheet
12a shaft opening
13 profile component
13a part of
20 bearing part
30 fixed part
31 is inserted into the hole
50 indoor machine
51 heat exchanger
52 suction opening
53 blowout opening