WO2019092886A1 - Indoor unit and air conditioner - Google Patents

Abstract

Provided is an indoor unit comprising an air flow direction device that adjusts the air flow direction of a gas passing through a duct and blown to the outside of a device, wherein the air flow direction device comprises: a vane having a flat blade that rotates about a rotational shaft and that deflects gas passing through, a shaft insertion part that has formed therein a shaft insertion hole through which a shaft, which is the rotational shaft, is inserted, and a seat that supports the shaft insertion part and that has formed therein a notch that is a portion cut out of the outer circumference; and a base having a shaft portion on which the shaft, which is the rotational shaft, is formed, a support face portion that has a support face corresponding to the vane seat and formed around the shaft, and a protrusion that is formed to correspond to the vane notch and that is in surface contact with the support face by way of the notch without being in contact with the vane seat. The base has a plurality of types of vanes mounted thereon. The combination of the vane notch and the base protrusion corresponding to the notch differs for each vane type.

Description

Indoor unit and air conditioner

The present invention relates to an indoor unit and an air conditioner. In particular, the present invention relates to the structure of a wind direction device provided in an indoor unit.

The blower outlet of the indoor unit of the air conditioner is provided with a vane for adjusting the wind direction of the blowout air flow in the left-right direction. The base for mounting the vane is provided with a shaft, and the vane is provided with a shaft insertion hole. By fitting the shaft portion into the shaft insertion hole, the vane can be accurately positioned in a specific direction in the drive mechanism relating to the vane even if there is assembly variation (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 10-047748

As in the air conditioner as described in Patent Document 1, one type of vane may be installed for one wind direction device, but two or more types of vanes may be attached at a predetermined location and installed. In the case of an indoor unit or the like, there is a possibility that the location to which each type of vane is attached may be mistaken.

This invention solves the above problems, and it aims at providing the indoor unit and air conditioner which can be attached to a plurality of kinds of vanes correctly.

In order to solve the above-mentioned subject, an indoor unit concerning this invention is an indoor unit provided with a wind direction device which adjusts a wind direction of gas which blows out of an air passage through an air path, and a wind direction device is centered on a rotating shaft. A flat blade that rotates and deflects the air flow direction of the passing gas, supports a shaft insertion portion and a shaft insertion portion in which a shaft insertion hole into which a shaft serving as a rotation shaft is inserted is formed. A vane having a seat portion having a notch and a notch, a shaft portion having an axis serving as a rotation axis, and a support surface portion formed around the shaft and having a support surface fitted to the seat of the vane, And a base having a convex portion which is formed corresponding to the notch of the vane and which contacts the support surface without contacting the seat of the vane by the notch, and a plurality of types of vanes are attached to the base Base convexes corresponding to the notches and notches of the vane The combination is different for each type of vanes.

According to the present invention, in the wind direction device of the indoor unit, the convex portion of the base corresponding to the notch of the vane and the notch is made different for each type of vane, so different types of vane have corresponding positions. Can be attached correctly.

It is a figure showing the structural example of the air conditioner in Embodiment 1 of this invention. It is a perspective view which shows the indoor unit 100 in Embodiment 1 of this invention. It is a disassembled perspective view which shows the indoor unit 100 in Embodiment 1 of this invention. It is a perspective view which shows the wind direction switching mechanism part 4 in Embodiment 1 of this invention. It is a perspective view which shows the wind direction apparatus 5 in Embodiment 1 of this invention. It is an enlarged perspective view of the vane 10 attachment part centering on the axial part 9a of the base 9 in Embodiment 1 of this invention. It is a perspective view explaining the structure of the vane 10 in Embodiment 1 of this invention. It is the figure which looked at the vane 10 in Embodiment 1 of this invention from the back side of the seat part 10e. It is a perspective view which shows the state in which the vane 10 and the base 9 in Embodiment 1 of this invention were fitted. It is sectional drawing (the 1) which shows the fitting state of the vane 10 and the base 9 in Embodiment 1 of this invention. It is sectional drawing (the 2) which shows the fitting state of the vane 10 and the base 9 in Embodiment 1 of this invention. It is a figure explaining the difference of the convex part 9c which concerns on the difference of two types of vanes 10 in Embodiment 1 of this invention. It is a figure explaining the difference of the seat part 10e and notch 10g which concern on two types of vanes 10 in Embodiment 1 of this invention. It is a perspective view when rotating the vane 10 in Embodiment 1 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like. In the following drawings, the same reference numerals denote the same or corresponding parts, which are common to all the embodiments described below. And the form of the component expressed to the whole specification is only an illustration, and is not limited to the form described in the specification. In particular, the combination of components is not limited to only the combination in each embodiment, and the components described in other embodiments can be applied to another embodiment. Moreover, the upper side in a figure is made into "upper side", and the lower side is demonstrated as "lower side." And, in the drawings, the relationship of the size of each component may be different from the actual one.

Embodiment 1
FIG. 1 is a diagram showing a configuration example of an air conditioner having an indoor unit 100 according to Embodiment 1 of the present invention. In FIG. 1, the air conditioner which performs air conditioning using a refrigerating cycle is shown as an example. The air conditioner has a refrigerant circuit in which a device in the outdoor unit 200 and a device in the indoor unit 100 are pipe-connected by the gas refrigerant pipe 300 and the liquid refrigerant pipe 400. The outdoor unit 200 includes a compressor 210, a four-way valve 220, an outdoor heat exchanger 230, and an expansion valve 240.

The compressor 210 compresses and discharges the sucked refrigerant. Here, although not particularly limited, the compressor 210 changes the capacity of the compressor 210 (the amount of refrigerant to be discharged per unit time) by arbitrarily changing the operating frequency by, for example, an inverter circuit or the like. It may be possible to The four-way valve 220 is a valve that switches the flow of the refrigerant, for example, according to the cooling operation and the heating operation.

The outdoor heat exchanger 230 exchanges heat between the refrigerant and air (air outside the room). For example, in heating operation, it functions as an evaporator and evaporates and evaporates the refrigerant. Also, in the cooling operation, it functions as a condenser and condenses and liquefies the refrigerant. An expansion valve 240 such as a throttling device (flow rate control means) decompresses and expands the refrigerant. For example, when expansion valve 240 is configured of an electronic expansion valve or the like, the degree of opening adjustment is performed based on an instruction from a control device (not shown) or the like.

The indoor unit 100 in FIG. 1 has the indoor heat exchanger 110 as an apparatus which comprises a refrigerant circuit. The indoor heat exchanger 110 exchanges heat between the air to be air-conditioned and the refrigerant, for example. During heating operation, the refrigerant functions as a condenser to condense and liquefy the refrigerant. In addition, during the cooling operation, the refrigerant functions as an evaporator to evaporate and evaporate the refrigerant.

FIG. 2 is a perspective view showing the indoor unit 100 according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view showing the indoor unit 100 according to Embodiment 1 of the present invention. In the first embodiment, a four-way cassette type indoor unit 100 having a ceiling 32 that can be embedded in the ceiling of a room and having outlets 32 in four directions will be described. The indoor unit 100 according to the first embodiment includes the indoor unit main body 2, the decorative panel 3, and the wind direction switching mechanism unit 4. When the indoor unit body 2 is installed on the ceiling side of the space to be air-conditioned in the embedded state, the lower surface, which faces the room, is open. The indoor unit body 2 accommodates devices such as a fan (not shown) that circulates air and performs air conditioning, and the indoor heat exchanger 110 described above. A wind direction switching mechanism unit 4 is installed on the lower surface side of the indoor unit body 2. The wind direction switching mechanism unit 4 will be described later.

In addition, on the lower surface side of the wind direction switching mechanism unit 4, the substantially square shaped decorative panel 3 is attached in a plan view. The decorative panel 3 faces the indoor side (lower side) which is a target space for air conditioning and the like. In the vicinity of the center of the decorative panel 3, there is provided a grill 31 serving as a suction port for air (gas) sucked into the indoor unit 100 by driving of a fan. The air after passing through the grill 31 is removed by a filter (not shown). Moreover, the blower outlet 32 which an air blows out is formed in each of four sides of the decorative panel 3 along each side.

FIG. 4 is a perspective view showing the wind direction switching mechanism 4 in the first embodiment of the present invention. The wind direction switching mechanism unit 4 has a wind direction device 5. As described later, the wind direction switching mechanism unit 4 includes the vanes 10 and the like in the wind direction device 5, and in the air path from the suction port to the blowout port 32, the air which has passed through the indoor heat exchanger 110 described above. The wind direction is adjusted and sent out from the air outlet 32. The wind direction switching mechanism 4 particularly adjusts the wind direction in the longitudinal direction (left and right direction) of the blowout port 32.

FIG. 5 is a perspective view showing a wind direction device 5 according to Embodiment 1 of the present invention. The wind direction device 5 at least includes a motor (not shown), a motor case 6 accommodating the motor, a crank 7, an arm 8, a base 9 and a vane 10. The motor case 6 is a case for housing a motor. Here, the motor is rotationally driven by receiving power supply from an electrical equipment box (not shown) of the indoor unit 100.

The crank 7 is connected to the arm 8 and transmits the force of the motor to the arm 8. Further, the arm 8 is connected to the plurality of vanes 10 at a location different from the crank 7, transmits the force to the plurality of vanes 10, and rotates the plurality of vanes 10. Here, although the motor rotates, the arm 8 to which the force is transmitted by the crank 7 linearly moves in the same direction as the long side direction of the outlet 32 of the decorative panel 3 shown in FIG. 3.

FIG. 6 is an enlarged perspective view of the vane 10 attached portion centering on the shaft portion 9a of the base 9 according to the first embodiment of the present invention. Moreover, FIG. 7 is a perspective view explaining the structure of the vane 10 in Embodiment 1 of this invention. Moreover, FIG. 8 is the figure which looked at the vane 10 in Embodiment 1 of this invention from the back side of the seat part 10e.

The base 9 is a base of the wind direction device 5. A plurality of attachment portions are formed on the base 9, and a plurality of vanes 10 are attached and installed on each attachment portion. The mounting portion has a shaft 9a, a support surface 9b, a projection 9c and a cantilevered piece 9d.

The shaft portion 9 a is inserted into a shaft insertion portion 10 f of the vane 10 described later, and has a shaft serving as a rotation shaft of the vane 10. The support surface 9 b corresponds to a seat 10 e of the vane 10 described later, and is formed around the shaft 9 a. The support surface portion 9 b is in contact with the attached vane 10 and has a support surface for supporting the vane 10.

The convex part 9c is installed corresponding to the notch 10g formed in the seat 10e of the vane 10 mentioned later. If the convex portion 9c and the notch 10g correspond to each other, the seat surface 10h, which is the bottom surface of the seat portion 10e described later, contacts the support surface 9b without contacting the seat portion 10e with the convex portion 9c. Can face. If the convex portion 9c and the notch 10g do not correspond to each other, the convex portion 9c interferes with the contact surface between the seat surface 10h and the support surface portion 9b. Further, a groove 9e is provided between the convex portion 9c and the support surface portion 9b. A seat 10e of the vane 10 described later is inserted into the space formed as the groove 9e, and the projection 9c and the support surface 9b sandwich a portion other than the notch 10g of the seat 10e. By sandwiching the seat portion 10 e, the attached vanes 10 are prevented from coming off the base 9. The convex portion 9 c serves as a stopper that limits the pivoting range (the pivotable range) of the vane 10.

In addition, the end of the cantilevered piece 9d elastically deforms as a free end. For this reason, the cantilevered piece 9 d has elasticity and contacts the attached vane 10 to apply an axial force to the vane 10. Further, in the vane 10 whose axial movement is limited by the convex portion 9c, a force in the opposite direction to the cantilevered piece 9d is applied by the convex portion 9c. Therefore, axial movement of the vanes 10 is suppressed. For this reason, the vibration of the vane 10 can be suppressed.

Further, as shown in FIGS. 7 and 8, the vane 10 has a blade 10a, a base 10b, a pin-like protrusion 10c, a plate-like protrusion 10d, a seat 10e, a shaft insert 10f and a notch 10g. ing. The blade portion 10 a has a flat plate-like blade, and adjusts and deflects the wind direction of the air having passed through the indoor heat exchanger 110 described above. Here, in the indoor unit 100 according to the first embodiment, two types of vanes 10 are installed. Two types of vanes 10 differ in the size of the flat part in blade part 10a.

The base 10 b is integral with the blade 10 a to transmit the force from the arm 8 to the vane 10 (in particular the blade 10 a). The pin-like protrusion 10 c and the plate-like protrusion 10 d are installed on the base 10 b. The pin-like protrusion 10 c is fitted in the hole of the arm 8 described above, and is connected to the arm 8 so that the blade 10 a can rotate around the shaft 9 a. In the vane 10, the force related to the rotation is transmitted from the arm 8 through the pin-like protrusion 10c. The plate-like protrusion 10 d is a member that limits the rotation area of the vane 10 so as not to mistake the rotational direction of the vane 10 when the vane 10 is attached to the base 9.

The seat portion 10 e is a disk-like pedestal that supports the wing portion 10 a and the base portion 10 b, and is instructed to be rotatable on the support surface of the support surface portion 9 b of the base 9. Further, the notch 10g is formed by cutting out a part of the outer peripheral portion of the seat portion 10e corresponding to the convex portion 9c so that the vane 10 can be attached without being disturbed by the convex portion 9c of the base 9 Be done. In the indoor unit 100 according to the first embodiment, the notches 10g are provided at two positions of the seat portion 10e. Here, as described above, in the indoor unit 100 according to the first embodiment, two types of vanes 10 are installed. The two types of vanes 10 have different positions of the notch 10g.

The seat surface 10 h is a surface on the back side of the seat portion 10 e and a surface in contact with the base 9. Further, the shaft insertion portion 10 f has a shaft insertion hole opened at the center of the seating surface 10 h. The shaft portion 9a of the base 9 is inserted into the shaft insertion hole of the shaft insertion portion 10f.

FIG. 9 is a perspective view showing a state in which the vane 10 and the base 9 are fitted in the first embodiment of the present invention. When attaching the vane 10 to the base 9, align the notch 10g of the vane 10 with the position of the convex portion 9c of the base 9, insert the shaft portion 9a into the shaft insertion hole of the shaft insertion portion 10f, and make the seating surface 10h Push in until it contacts the support surface of the support surface portion 9b. Then, the vane 10 is rotated so that the outer peripheral portion other than the notch 10g of the seat portion 10e is fitted into the groove 9e. Thereby, since the convex part 9c suppresses the seat part 10e, the vane 10 will be in a fitting state, without removing from the base 9. As shown in FIG.

In the fitted state of the vane 10 and the base 9, the bearing surface 10h of the vane 10 is in contact with the support surface of the support surface portion 9b, but the vane 10 is in the shaft insertion hole of the shaft insertion portion 10f. It is rotatably held around the axis of the inserted shaft 9a.

10 and 11 are cross-sectional views showing the fitted state of the vane 10 and the base 9 in the first embodiment of the present invention. FIG. 10 is a view taken along the longitudinal direction of the base 9 and the air outlet 32. As shown in FIG. FIG. 11 is a view as seen along the short direction of the base 9 and the air outlet 32. As shown in FIG. As shown in FIGS. 10 and 11, in a state where the vanes 10 are fitted, as described above, the cantilevered pieces 9d of the base 9 push up the vanes 10 from the seat surface 10h side by elasticity. On the other hand, the convex portion 9 c interferes with the push-up of the vane 10 by the cantilevered piece 9 d, whereby a force is applied to the vane 10 in a direction opposite to the direction in which the cantilevered piece 9 d pushes up the vane 10. Thereby, the movement of the vane 10 in the axial direction can be suppressed. For this reason, air can hit the blade portion 10a to suppress chatter noise generated by vibration.

FIG. 12 is a view for explaining the difference in the convex portion 9c according to the difference between the two types of vanes 10 in the first embodiment of the present invention. Moreover, FIG. 13 is a figure explaining the difference of the seat part 10e and notch 10g which concern on two types of vanes 10 in Embodiment 1 of this invention. As shown in FIG. 12, when attaching the two types of vanes 10 to the base 9, if the position to be attached to the base 9 is determined for each type, the convex portion 9 c is different according to each type. It is installed at the position. For example, 1 when the type-th reference convex portion 9c ₁ which corresponds to the vane 10 ₁ of the convex portion 9c ₂ corresponding to vane 10 ₂ of second type, rather than the position of the convex portion 9c _{1 L 1} only the upper Installed in position.

Then, as shown in FIG. 13, the notch 10g of the vane 10, the first kind notch 10g ₁ of the vane 10 ₁ of the corresponding position is notched and protrusion 9c _1. The second type cutouts 10 g ₂ of the vane 10 _2, corresponding with the protrusion 9c _2, the upper position is cut by _{L 1} than 10 g ₁ notch. Therefore, the vane 10 ₁ of the first type, even about to install the mounting unit for the vane 10 ₂ is mounted in the second type, and the convex portion 9c ₂ is disturbed, it can not be attached. Conversely, the second type of vane 10 _2, even about to install the mounting unit for the vane 10 ₁ is mounted in the first type, and the convex portion 9c ₁ baffle, can not be attached. Therefore, mounting errors of the vanes 10 can be prevented.

FIG. 14 is a perspective view when the vane 10 in Embodiment 1 of the present invention is rotated. When attaching the vane 10 to the base 9, the seat portion 10e of the vane 10 is brought into contact with the bearing surface 10h of the seat portion 10e and the support surface of the support surface portion 9b so that the seat 10e does not contact the convex portion 9c of the base 9 Let At this time, when the vane 10 is rotated in the wrong direction so that the rotational direction is reversed and the position of the pin-like protrusion 10 c is not reversed, the plate-like protrusion 10 d of the vane 10 is a protrusion of the base 9 Contact 9c to prevent rotation. Thus, the rotation area of the vane 10 is limited, so that the rotation in the wrong direction is avoided. Here, the rotation range limited by the plate-like protrusion 10 d and the protrusion 9 c is a range that does not prevent the rotation of the vane 10 by the motor.

As described above, according to the indoor unit 100 of the first embodiment, when the plurality of types of vanes 10 are attached to the base 9 in the wind direction device 5, the notches 10g of the vanes 10 and the types of vanes 10 are The positions of the corresponding convex portions 9c are made different. For this reason, it is possible to prevent different types of vanes 10 from being attached to the base 9 at an unmatched position. Further, by providing the groove 9e between the convex portion 9c and the support surface portion 9b, it is possible to sandwich the seat portion 10e of the vane 10 by using the groove 9e so as not to come off. Then, the base 9 has an elastic cantilevered piece 9d on the base 9, and the axial movement of the seat portion 10e of the vane 10 is suppressed by the convex portion 9c, thereby suppressing the vibration of the base 9 and generating vibration noise. Can be suppressed.

In the first embodiment, by configuring the air conditioner having the indoor unit 100, the heating operation and the cooling operation can be realized by switching the flow of the refrigerant by the four-way valve 220 of the outdoor unit 200. .

Second Embodiment
The indoor unit 100 according to the first embodiment described above changes the positions of the notches 10g of the plurality of types of vanes 10 and the corresponding convex portions 9c. However, it is not limited to this. The shapes of the notches 10g of the plurality of types of vanes 10 and the corresponding convex portions 9c may be made different from each other so that different types of vanes 10 can not be attached.

Moreover, although Embodiment 1 mentioned above demonstrated the case where two types of vanes 10 were attached to the base 9, it does not limit to this. The present invention can also be applied to the case where three or more types of vanes 10 are attached to the base 9.

Although the above-mentioned embodiment explained an air conditioner as an example of a refrigerating cycle device, it does not limit to this. For example, the invention can be applied to other refrigeration cycle devices such as a refrigeration system and a refrigeration system. Moreover, it can apply not only to a refrigerating cycle apparatus but a fan, a ventilator, etc.

DESCRIPTION OF SYMBOLS 1 indoor unit main body, 3 makeup panel, 4 wind direction switching mechanism part, 5 wind direction apparatus, 6 motor case, 7 crank, 8 arms, 9 bases, 9a shaft part, 9b support surface part, 9c, 9c ₁ , 9c ₂ convex parts, 9d cantilever, 9e grooves, 10, 10 _1, 10 ₂ vane, 10a wing portion, 10b base, 10c pin-shaped projections, 10d plate protrusions, 10e seat, 10f shaft insertion portion, 10 g, _{10 g} 1, 10g ₂ notch, 10h seat surface, 31 grille, 32 outlet, 100 indoor unit, 110 indoor heat exchanger, 200 outdoor unit, 210 compressor, 220 four-way valve, 230 outdoor heat exchanger, 240 expansion valve, 300 gas Refrigerant piping, 400 liquid refrigerant piping.

Claims (7)

An indoor unit comprising a wind direction device for adjusting the wind direction of gas blown out of the machine through a wind path, comprising:
The wind direction device
A flat-plate-like blade that rotates about a rotation axis and deflects the direction of the passing gas, a shaft insertion portion in which a shaft insertion hole into which a shaft serving as the rotation shaft is inserted is formed, and the shaft insertion portion is supported. And a vane having a seat portion formed with a notch in which a part of the outer periphery is cut away,
A shaft portion on which the shaft serving as the rotation shaft is formed, a support surface portion formed around the shaft and having a support surface aligned with the seat portion of the vane, and a recess corresponding to the notch of the vane And a base having a convex portion which is brought into contact with the support surface without being in contact with the seat portion of the vane by the notch.
An indoor unit in which a plurality of types of the vanes are attached to the base, and a combination of the notch of the vane and the convex portion of the base corresponding to the notch differs for each type of the vane. The base is
The indoor unit according to claim 1, further comprising: a groove for sandwiching an outer peripheral portion other than the portion of the notch in the seat portion of the vane, between the convex portion and the support surface portion. The base is
The room according to claim 2, further comprising a cantilevered piece whose end is elastically deformed as a free end and which holds the seat of the vane with the convex portion to suppress movement of the vane in the direction of the rotation axis. Machine. The vane according to any one of claims 1 to 3, further comprising: a plate-like projection that rotates around the rotation axis and limits the rotation range of the vane by the contact of the base with the projection. The indoor unit as described in 1 item. The indoor unit according to any one of claims 1 to 4, wherein a combination of the notch of the vane and the position of the convex portion of the base is different for each type of the vane. The indoor unit according to any one of claims 1 to 5, wherein a combination of the notch of the vane and the shape of the convex portion of the base is different for each type of the vane. An indoor unit according to any one of claims 1 to 6.
An air conditioner comprising: an indoor unit and an outdoor unit constituting a refrigerant circuit that is pipe-connected to circulate the refrigerant.

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