ES2926176T3 - Indoor unit of air conditioner - Google Patents

Abstract

It is an object of the invention to provide an indoor unit for air conditioning configured to have a wider airflow direction adjustment range than a conventional range, of air exhausted by an airflow direction adjustment vane, even when the expelled air has a low temperature. . An indoor air conditioning unit (1) has a through hole (43) allowing part of the exhausted air to pass in the direction of the thickness of a second airflow direction adjusting blade (40). Accordingly, the air passing through the through hole (43) flows to the downstream end of a convex surface (40a) during the cooling operation to attract the blowing air flowing along the convex surface (40a). ) from an upstream end and prevent separation of the blown air. the air from the convex surface (40a). This prevents the entry of hot air to inhibit dew condensation. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Indoor unit of air conditioner

technical field

The present invention relates to an indoor air conditioning unit.

Background art

A method for adjusting the angle of an airflow direction adjusting blade according to the temperature of the blown air has been conventionally adopted, so as to prevent dew condensation on the airflow direction adjusting blade. air. For example, Patent Literature Document 1 (JP 2009-97755 A) discloses an indoor air conditioning unit configured to detect the temperature of air passing through a blowing door and rotate a flow direction adjustment blade. to a position that forms a dew condensation safety angle that is a small angle with respect to a predetermined blowing direction, in the event that it is determined that dew condensation forms on the direction adjustment blade airflow direction, and rotate the airflow direction adjusting blade to a position that forms an angle greater than the dew condensation safety angle with respect to the predetermined blowing direction, in another case where it is determined that no dew condensation is forming.

Further related art can be found in CN 204786798 U, which discloses an indoor apparatus of an air conditioner, CN 105444387 A, which discloses an air outlet adjustment sheet and an indoor unit of an air conditioner, and WO 2017024637 A1, which describes an indoor unit of air conditioner and an air conditioner.

Summary of the invention

<Technical problem>

Accordingly, an air conditioning indoor unit as described above has an airflow direction adjustment range of the air blown by an airflow direction adjustment blade, which is narrower when the air blown has a low temperature.

In view of this, it is an object of the present invention to provide an indoor air conditioning unit configured to have an air flow direction adjustment range wider than a conventional range, of the air blown by a blade airflow direction adjustment even when the blown air has a low temperature.

<Problem Solutions>

The present invention is defined by the accompanying independent claim 1. The dependent claims describe optional features and different embodiments. Any description that does not fall within the scope of said claims does not, therefore, form part of the present invention.

An indoor air-conditioning unit according to a first aspect of the present invention is a wall-suspended indoor air-conditioning unit including an airflow direction adjusting sheet configured to vertically adjust the airflow direction of the blown air, wherein the airflow direction adjusting sheet has at least one through hole arranged at a longitudinal end and allowing part of the blown air to pass in the direction of its thickness.

Blowing air flowing along a lower surface of the airflow direction adjusting sheet is separated around a curved portion of the lower surface during cooling operation. Dew condensation forms where warm interior air entering the curved portion joins cool blown air. Dew condensation is particularly likely to form at the end of the airflow direction adjustment sheet.

The air conditioning indoor unit has this through hole which allows part of the blown air to pass in the thickness direction. The air passing through the through hole flows to a downstream end of the bottom surface to attract the blown air flowing along the bottom surface from an upstream end and prevent the blown air from separating from the surface. lower. This prevents hot air from entering, so dew condensation is inhibited.

An indoor air conditioning unit according to a second aspect of the present invention is the indoor air conditioning unit according to the first aspect, wherein the through hole is a long hole extending in a longitudinal direction of the sheet. airflow direction adjustment.

The air conditioning indoor unit has the through hole formed as the long hole extending in the longitudinal direction of the airflow direction adjusting sheet, to increase the air flowing. passes through the through hole and flows to the downstream end of the bottom surface. This configuration more effectively attracts the blown air flowing along the bottom surface from the upstream end, and the blown air is less likely to separate from the bottom surface.

An indoor air conditioning unit according to a third aspect of the present invention is the indoor air conditioning unit according to the first or second aspect, in which the through hole guides part of the blown air in the forward and downward direction during cooling operation.

The air conditioning indoor unit guides part of the blown air in the forward and downward direction through the through hole, so that the air passing through the hole is likely to flow to the downstream end of the bottom surface.

An indoor air conditioning unit according to a fourth aspect of the present invention is the indoor air conditioning unit according to any one of the first to third aspects, in which the through hole is inclined so as to extend downward. in the direction of the tip of the airflow direction adjustment blade.

An indoor air conditioning unit according to a fifth aspect of the present invention is the indoor air conditioning unit according to any one of the first to fourth aspects, wherein the through hole is located between a downstream end and a center. according to a flow direction of the blown air, on the air flow direction adjustment sheet.

An indoor air conditioning unit according to a sixth aspect of the present invention is the indoor air conditioning unit according to any one of the first to fifth aspects, and the indoor air conditioning unit further includes a perpendicular sheet. The perpendicular sheet has a laterally swinging vertical plane to laterally adjust the airflow direction of the air flowing into the airflow direction adjusting sheet. The through hole is located at least partially in a section of a region where a virtual plane that includes the vertical plane of the perpendicular blade, located at the farthest end opposite to the oscillation direction of the perpendicular blade, located in a position of maximum oscillation, it cuts the airflow direction adjustment sheet to an end closest to the region of the airflow direction adjustment sheet.

In an exemplary case where the perpendicular sheet is located at a position of maximum oscillation to the left, the air has a weak flow in the portion to the right of the region where the virtual plane including the vertical plane of the perpendicular blade, located at a more right position, cuts the airflow direction adjustment blade, and its airflow is likely to separate from the lower surface of the airflow direction adjustment blade. airflow and allow warm indoor air to enter to form dew condensation.

The air conditioning indoor unit has the through hole arranged in this section to allow the air passing through the through hole to flow to the downstream end of the bottom surface, so as to attract the blown air flowing along. of the bottom surface from the upstream end and prevent separation of air blown from the bottom surface. This prevents hot air from entering, so dew condensation is inhibited.

An indoor air conditioning unit according to a seventh aspect of the present invention is the indoor air conditioning unit according to any one of the first to sixth aspects, whereby the indoor air conditioning unit further includes a volute configured to guide the conditioned air to a blow outlet port. When the air conditioner has a temperature (hereinafter referred to as blowing air temperature) within a range of 5°C to 15°C, a tangent line at a terminal end of the volute and a virtual line joining a leading end and a rear end of the airflow direction adjustment blade forms an angle in a range of 0 degrees to 35 degrees.

The angle of the airflow direction adjusting blade in the direction of the volute is kept at an angle that is not likely to cause separation of the air blown along the airflow direction adjusting blade during cooling operation, to inhibit dew condensation on the airflow direction adjustment blade. When the airflow direction adjusting blade is inclined so as to have an angle causing separation, as a result of a user's request, the temperature of the blown air should be increased to prevent dew condensation or achieve retention of water when dew condensation forms.

The air conditioning indoor unit has this through hole provided at the longitudinal end of the airflow direction adjusting sheet and allowing part of the blown air to flow in its thickness direction. This configuration allows the airflow direction adjustment blade to be arranged at an angle within the range of 0 degrees to 35 degrees, even when the temperature of the blown air is lowered during cooling operation, to achieve excellent ease. of use.

<Advantageous Effects of the Invention and Disclosure>

The indoor air conditioning unit according to the first aspect of the present invention has the through hole which allows part of the blown air to pass in the thickness direction. Therefore, the air passing through the through hole flows to the downstream end of the bottom surface to attract the blown air flowing along the bottom surface from the upstream end and prevent the separation of the blown air from the bottom surface. the bottom surface. This prevents the entry of hot air to inhibit dew condensation.

The air conditioning indoor unit according to the second aspect of the present invention has this through hole formed as a long hole extending in the longitudinal direction of the airflow direction adjusting sheet, in order to to increase the air passing through the through hole and flowing to the downstream end of the bottom surface. This configuration more effectively attracts the blown air flowing along the bottom surface from the upstream end and the blown air is less likely to separate from the bottom surface.

The air conditioning indoor unit according to any one of the third to fifth aspects of the present invention guides part of the blown air in the forward and downward direction through the through hole, so that the air passing through is likely to through the through hole to flow to the downstream end of the bottom surface.

The indoor air conditioning unit according to the sixth aspect of the present invention has the through hole disposed in the portion located to the right of the region in which the virtual plane including the vertical plane of the perpendicular sheet located at the rightmost position, cuts the airflow direction adjustment blade when the perpendicular blade is at the maximum left swing position. This configuration allows air passing through the through hole to flow to the downstream end of the bottom surface to attract blown air flowing along the bottom surface from the upstream end and prevent blown air separation. of the lower surface. This prevents hot air from entering, so dew condensation is inhibited.

The air conditioning indoor unit according to the seventh aspect of the present invention has the through hole provided at the longitudinal end of the airflow direction adjusting sheet and allowing part of the blown air to flow in the airflow direction. of the thickness. This configuration allows the airflow direction adjusting blade to be arranged at an angle within the range of 0 to 35 degrees, even when the blown air temperature is lowered to 15°C or less during cooling operation, for excellent usability.

Brief description of the drawings

FIG. 1A is a perspective view of an indoor air conditioning unit that is not in operation.

FIG. 1B is a perspective view of the indoor air conditioning unit in preparation for operation.

FIG. 2A is a side view of the air conditioning indoor unit that is not in operation. FIG. 2B is a side view of the indoor air conditioning unit in preparation for operation. FIG. 3 is a perspective view of the air conditioning indoor unit in operation.

FIG. 4 is a longitudinal sectional view of the indoor air conditioning unit that is not in operation.

FIG. 5 is a longitudinal sectional view of the air conditioning indoor unit in preparation for operation.

FIG. 6 is a longitudinal sectional view of the air conditioning indoor unit in operation. FIG. 7 is a longitudinal sectional view of a panel transport mechanism.

FIG. 8 is a perspective view of a rear surface of a first panel.

FIG. 9A is an enlarged perspective view of a locking mechanism that joins the first panel and a movable tie.

FIG. 9B is an enlarged perspective view showing an unlocked state of the lock mechanism of FIG. 9A.

FIG. 10 is a partial perspective view of the air conditioning indoor unit in a case where the first panel is placed in a maintenance position.

FIG. 11A is a perspective view of a panel support mechanism before a support operates. FIG. 11B is a perspective view of the panel support mechanism after the support operates. FIG. 12 is a front view of the panel support mechanism before the support operates.

FIG. 13A is a perspective view of a first airflow direction adjustment blade, which is not in operation.

FIG. 13B is a perspective view of the first airflow direction adjustment blade in operation.

FIG. 14A is a sectional view taken along the line X-X indicated in FIG. 13A.

FIG. 14B is an enlarged sectional view of a first concave portion.

FIG. 14C is an enlarged sectional view of a second concave portion.

FIG. 15 is a longitudinal sectional view of the air conditioning indoor unit, indicating an angle of inclination of a second airflow direction adjusting blade.

FIG. 16A is a perspective view of the second airflow direction adjustment blade.

FIG. 16B is a sectional view taken along line Y-Y indicated in FIG. 16A.

FIG. 17 is a longitudinal sectional view of an indoor air conditioning unit that is not in operation, according to a modification example.

FIG. 18 is a longitudinal sectional view of the air conditioning indoor unit before starting operation, according to the modification example, including a panel transport mechanism in operation. FIG. 19 is a longitudinal sectional view of the air conditioning indoor unit in operation according to the modification example.

Description of achievements

Next, an embodiment of the present invention will be described with reference to the drawings. The following embodiment specifically exemplifies the present invention and is not intended to limit the technical scope of the present invention.

(1) Sketch of indoor air conditioning unit 1

FIG. 1A is a perspective view of an indoor air conditioning unit 1 that is not in operation. FIG. 1B is a perspective view of the air conditioning indoor unit 1 in preparation for operation. FIG. 2A is a side view of the air conditioning indoor unit 1, which is not in operation. FIG. 2B is a side view of the air conditioning indoor unit 1 in preparation for operation. FIG. 3 is a perspective view of the air conditioning indoor unit 1 in operation. The indoor air conditioning unit 1 shown in FIG. 1A, FIG. 1B, FIG. 2A, FIG. 2B and FIG. 3 is of the wall hanging type and includes an indoor unit body 10 and a front panel 11 covering a front surface of the indoor unit body 10.

As depicted in FIG. 1A and in FIG. 2A, the air conditioning indoor unit 1, which is not in operation, includes a blowing door 5 having a front end completely covered by a first panel 111 and a lower end completely covered by a first direction adjustment sheet. of the airflow 30. This configuration does not allow the interior of the indoor unit body 10 to be visible through the blowing door 5, in order to achieve excellent design.

As depicted in FIG. 1B and in FIG. 2B, the first panel 111 of the front panel 11 moves forward and up to face a second panel 112 before the air conditioning indoor unit 1 starts to work, to allow the blowing door 5 to be opened. forward. As depicted in FIG. 3, the first airflow direction adjustment sheet 30, placed at the bottom of the indoor unit body 10, subsequently rotates 180 degrees clockwise to open the lower end of the airflow door. blown 5.

(2) Indoor unit body 10

FIG. 4 is a longitudinal sectional view of the air conditioning indoor unit 1, which is not in operation. FIG. 5 is a longitudinal sectional view of the air conditioning indoor unit 1 in preparation for operation. FIG. 6 is a longitudinal sectional view of the air conditioning indoor unit 1, in operation. As depicted in FIG. 4, FIG. 5 and FIG. 6, the indoor unit body 10 includes a body casing 100 constituting an outer contour, as well as the first airflow direction adjustment sheet 30, a second airflow direction adjustment sheet 40 and a perpendicular airflow direction adjusting blade 50, which are configured to adjust the blowing direction of the air conditioner. The body shell 100 houses an indoor heat exchanger 12, a fan 13, and a frame 16.

(2-1) Body Shell 100

The body casing 100 has a front surface 101, an upper surface 102 and a lower surface 103, which form a substantially rectangular parallelepiped space that houses the internal heat exchanger 12, the fan 13, the frame 16 and a filter 9. upper surface 102 is provided with an upper blow gate 4A (see FIG. 10) including a plurality of slots. The blow port 5 extends from a lower part of the front surface 101 to a front part of the lower surface 103. The front surface 101 further includes a front blow port 4B disposed above the blow port 5.

Indoor heat exchanger 12 and fan 13 are secured to frame 16. Indoor heat exchanger 12 exchanges heat with air passing through it. The fan 13 causes the air introduced through the upper suction door 4A and the front suction door 4B to arrive and pass through the indoor heat exchanger 12, and then is blown outside by the blowing door 5. The blowing door 5 is provided with the first airflow direction adjusting blade 30 and the second airflow direction adjusting blade 40, configured to guide the blown air in a vertical direction. The first airflow direction adjustment blade 30 is driven by a motor (not shown) and is configured to change the blowing direction of the air, as well as to open and close the blowing door 5 adjacent to the bottom surface. 103.

The perpendicular airflow direction adjusting sheet 50 is disposed upstream of the first airflow direction adjusting sheet 30 and the second airflow direction adjusting sheet 40, and is configured to guide the air in a lateral direction.

The filter 9 is arranged between the indoor heat exchanger 12 and the front surface 101 as well as the top surface 102 of the body casing 100. The filter 9 removes the dust contained in the air that enters and flows to the indoor heat exchanger 12.

The fan 13 operates to make the indoor air flow through the upper suction door 4A, the front suction door 4B, the filter 9 and the indoor heat exchanger 12, sucked into the fan 13, and then blown out. to the outside through the blow port 5 via a blow flow path 18.

(2-2) First airflow direction adjustment sheet 30

The first airflow direction adjusting sheet 30 is still positioned to cover the lower end of the blowing door 5 when the air conditioning indoor unit is not in operation. Such a position of the first airflow direction adjusting blade 30 will be referred to as the initial position SP (see FIG. 4 and FIG. 5). The first airflow direction adjusting sheet 30, located at the home position SP, has a bottom surface that is constantly visible while the air conditioning indoor unit is not in operation, and therefore it is finished. so it has an excellent appearance. The lower surface will be referred to as decorative surface 30a.

In the initial position SP, the blowing door 5 has an inner surface that is directed downwards and is followed by blown air when the indoor air conditioning unit is in operation. The inner surface will be referred to as the Coanda surface 30b.

The first airflow direction adjustment blade 30 is rotated by means of a motor (not shown). The first airflow direction adjusting blade 30 has an axis (not shown) located above the front end of the first airflow direction adjusting blade 30 located at the initial position SP, at approximately the half the height of the blowing gate 5.

As depicted in FIG. 6, the first airflow direction adjustment sheet 30, rotated clockwise by 180 degrees, protrudes forward from the upper end of the blowing door 5, so that the decorative surface 30a is points upwards and the surface of Coanda 30b points downwards.

The first airflow direction adjustment sheet 30 will be described in detail later in a section "(5) Detailed description of the first airflow direction adjustment sheet 30".

(2-3) Second airflow direction adjustment blade 40

The second airflow direction adjustment blade 40 is located upstream of the blowing door 5 and above the initial position SP of the first airflow direction adjustment blade 30 when the indoor unit of air conditioning is not working. As depicted in FIG. 6, the second airflow direction adjusting sheet 40 has an arc-length shape having a downward-directed convex surface 40a and an upward-directed concave surface 40b during cooling operation. In order to generate a vertically downward airflow during heating operation, the second airflow direction adjusting sheet 40 can be positioned so that it has the convex surface 40a directed upward and the concave surface 40b directed downward.

The second airflow direction adjustment blade 40 is rotated by a motor (not shown). The second airflow direction adjustment blade 40 has an axis (not shown) located above the concave surface 40b.

The second airflow direction adjustment sheet 40 will be described in detail later in a section "(6) Detailed description of the second airflow direction adjustment sheet 40".

(2-4) Perpendicular airflow direction adjustment blade 50

As depicted in FIG. 4, FIG. 5 and FIG. 6, the perpendicular airflow direction adjustment blade 50 includes a plurality of blade pieces 501 and a coupling rod 503 that engages the plurality of blade pieces 501. In the blowing flow path 18, the perpendicular airflow direction adjustment blade 50 is located closer to the fan 13 compared to the first airflow direction adjustment blade 30 and the second airflow direction adjustment blade 30. airflow direction adjustment 40.

When the coupling rod 503 moves horizontally in a reciprocating motion in the longitudinal direction of the blow gate 5, the plurality of sheet pieces 501 swings sideways from a state perpendicular to the longitudinal direction. The link rod 503 is moved horizontally in a reciprocating motion by a motor (not shown).

(3) Front panel 11

As depicted in FIG. 1A, FIG. 2A and FIG. 4, the front panel 11 covers the front surface of the body 10 of the indoor unit. The front panel 11 is divided into upper and lower parts, and includes the first panel 111 as the bottom part and the second panel 112, placed above the first panel 111.

The first panel 111 and the second panel 112 constitute a design surface of the indoor air conditioning unit 1 and are similar to each other in design, color, or a combination thereof.

The first panel 111 has a different placement between the case where the indoor air conditioning unit 1 is not in operation and the case where the indoor air conditioning unit 1 is in operation.

In a first case where the air conditioning indoor unit 1 is not in operation, the first panel 111 and the second panel 112 have vertically aligned surfaces in a same vertical plane to aesthetically integrate with each other and achieve an excellent appearance. . The first panel 111 is configured to be vertically longer than the second panel 112 in a front view. The second panel 112 has a vertical length set to be equal to the height of the front end of the blow door 5. The first panel 111 and the blow door 5 have lower ends adjacent to each other as if the lower ends appear to be level in a front view. Similarly, the second panel 112 and the front surface 101 of the body casing 100 have upper ends adjacent to one another as if the upper ends appear to be flush in a front view.

In a second case when the air conditioning indoor unit 1 starts to work, a panel transport mechanism 21 simultaneously moves the first panel 111 forward and upward and moves the first panel 111 until the upper end of the first panel 111 is flush with the upper end of the second panel 112 in a front view. The front end of the blow door 5 is thus opened, and the front blow door 4B and the first panel 111 form a space for introducing air.

When the first panel 111 and the second panel 112 have upper ends level with each other, the front panel 11 does not protrude upwardly from an upper surface of the indoor unit body 10 when the air conditioning indoor unit is in operation, without which changes the size of the product between the case where the indoor air conditioning unit is in operation and the case where the indoor air conditioning unit is not in operation, in a front view.

even in the case where the ceiling surface of a room and the upper surface of the indoor air conditioning unit 1 have distance restrictions, a service person can mount the indoor air conditioning unit without paying attention to the size of the indoor unit. product in operation. The upper end of the first panel 111 and the upper end of the second panel 112 need not be completely flush in a front view, and only need to be adjacent to each other such that they appear to be flush in the front view. The upper end of the first panel 111 may thus protrude slightly from the upper end of the second panel 112 in front view.

As depicted in FIG. 2A and in FIG. 2B, the upper end of a side surface 111a of the first panel 111 and the lower end of a side surface 112a of the second panel 112 face each other and are inclined forward and upward. Even when the first panel 111 moves forward and upward simultaneously, the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112 will not interfere with each other.

(3-1) Panel transport mechanism 21

The panel transport mechanism 21 is configured to cause the first panel 111 to simultaneously move forward and upward, or, in other words, move obliquely upward. For a simpler description, suppose that the first panel 111 closes the front end of the blow door 5 in a closed position CP (see FIG. 2A), and that the first panel 111 moves vertically so that it has the upper end level with the upper end of the second panel 112 in a front view, and opens the front end of the blow door 5 in an open position OP (see FIG. 2B).

FIG. 7 is a longitudinal sectional view of the panel transport mechanism 21. FIG. 11A and FIG. 11B are perspective views of a panel support mechanism 24 before and after a support 25 operates, and reference will also be made to these figures depicting the panel transport mechanism 21. As depicted in FIG. 7, FIG. 11A and FIG. 11B, the panel transport mechanism 21 is obtained by applying a parallel crank mechanism. The panel transport mechanism 21 includes a first handle 211, a second handle 212, a movable link 213 and a fixed link 214.

(3-1 -1) First Crank 211

The first crank 211 is a resin member and has each end molded in the form of a column or tube so as to serve as a shaft. A first shaft 211a is provided located adjacent to the first panel 111 and rotatably held by an upper end bearing 213a of the movable link 213. As shown in FIG. 11A, the first axis 211a according to the present embodiment is formed as a pillar-like protrusion. There is further provided a second shaft 211b located adjacent to the indoor unit body 10 and coupled to an output shaft of a motor (not shown). As depicted in FIG. 7, the second shaft 211b is disposed behind the second panel 112. The output shaft of the motor according to the present embodiment receives a resin rod having a quadrilateral section, and the second shaft 211b has a center provided with a quadrilateral hole that receive the resin rod.

As depicted in FIG. 7, the first crank 211 includes a curved portion 211c. The curved portion 211c joins the first axis 211a and the second axis 211b, and extends so that it is distant obliquely downward from a virtual line (double-dotted-dash line KL) joining the center of the first axis 211a and the center of the second axis 211b to present a minimum distance, and then curves to extend toward the virtual line.

When the first panel 111 is lifted upward so that the first axis 211a is positioned in front of the second panel 112, the first handle 211 approaches the lower end of the second panel 112. The curved part 211c curves to avoid the lower end of the second panel 112, in order to avoid interference between the first handle 211 and the lower end of the second panel 112.

(3-1 -2) Second crank 212

The second crank 212 is a resin member and has each end molded in a column or tubular shape to serve as a shaft. A first shaft 212a is provided located adjacent to the first panel 111 and rotatably held by a lower end bearing 213b of the movable link 213. As shown in FIG.

11A, the first axis 212a according to the present embodiment is formed as a pillar-like protrusion. In addition, a second shaft 212b is provided, located adjacent to the indoor unit body 10 and rotatably retained by the lower end of the fixed link 214. As shown in FIG. 7, the second axis 212b according to the present embodiment is formed as a pillar-shaped protrusion.

(3-1-3) Movable ligature 213

The movable link 213 is an elongated resin member and is fixed in a vertical position to the rear surface of the first panel 111. The movable link 213 has upper and lower ends, each of which constitutes a bearing. The upper end serves as the upper end bearing 213a receiving the first shaft 211a of the first crank 211, while the lower end serves as the lower end bearing 213b receiving the first shaft 212a of the second crank 212.

As depicted in FIG. 11A, the upper end bearing 213a according to the present embodiment has a bearing hole which receives the columnar projection of the first shaft 211a of the first crank 211. The lower end bearing 213b has a bearing hole which receives the projection column-shaped of the first shaft 212a of the second crank 212.

(3-1-4) Fixed ligation 214

The fixed link 214 is located adjacent to the body 10 of the indoor unit and does not need to have a specific shape, it just needs to be provided with at least one bearing for the second shaft 211b of the first crank 211 and one bearing for the second shaft 212b of the second crank 212.

In the present embodiment, the second shaft 211b of the first crank 211 is supported by the output shaft of the motor, while the second shaft 212b of the second crank 212 is supported by a bearing 214b located below and distant a predetermined length from the motor. engine output shaft.

(3-2) Operation of the first panel 111 at the start of operation

When the first panel 111 is in the state shown in FIG. 4 and the motor rotates the second shaft 211b of the first crank 211 clockwise, the first crank 211 rotates clockwise. In this case, the first axis 211a of the first crank 211 traces an arc around the second axis 211b and lifts the movable link 213 upwards.

The first crank 211 stops rotating at a position where the virtual line joining the first axis 211a and the second axis 211b is tilted upward by about 5 degrees from a horizontal direction. Such stop position will be called the maximum rotation position Rm of the first crank 211 (see FIGS. 5 and 6). The first shaft 211a of the first crank 211 and the upper end bearing 213a of the movable link 213 are rotatably attached to each other. The lower end bearing 213b of the movable link 213 and the first shaft 212a of the second crank 212 are rotatably attached to each other. The bearing 214b of the fixed link 214 and the second shaft 212b of the second crank 212 are rotatably attached to each other.

The upwardly raised movable link 213 maintains the vertical position and moves upwards to distance itself from the body 10 of the indoor unit.

In this case, the "virtual line joining the first axis 211a and the second axis 211b" of the first crank 211 and a "virtual line joining the first axis 212a and the second axis 212b" of the second crank 212 are substantially parallel to each other, and a "virtual line joining the upper end bearing 213a and the lower end bearing 213b" of the movable link 213 and a "virtual line joining the output shaft of the motor and the bearing 214b" of the fixed ligature 214 are substantially parallel to each other, such that these four virtual lines substantially form a parallelogram.

When the first handle 211 acts as a motor and rotates, the first panel 111 fixed to the movable link 213 can go up or down while keeping it parallel to the fixed link 214.

As depicted in FIG. 5 and FIG. 6, when the first crank 211 reaches the maximum rotation position Rm, the first panel 111 is placed in front of the second panel 112 and the upper ends of the first panel 111 and the second panel 112 are leveled in a front view.

The first panel 111 is configured so that it is vertically longer than the second panel 112 in a front view. When the first panel 111 rises to have the top end flush with the top end of the second panel 112 in a front view, the first panel 111 covers the second panel 112 so that there appears to be only one panel.

The vertical length of the second panel 112 is equal to the height of the front end of the blow door 5. As shown in FIG. 2B, when the first panel 111 rises to the position (open position OP) where the upper end of the first panel 111 is flush with the upper end of the second panel 112 in a front view, the front end of the blown 5 opens completely.

The first panel 111 can be transported from the open position OP to the closed position CP by turning the first crank 211 of the panel transport mechanism 21 shown in FIG. 5.

(4) Mechanism configured to maintain the position of the first panel 111

The panel transport mechanism 21 operates when the air conditioning indoor unit is in operation, as well as during maintenance, such as cleaning of the filter 9. During maintenance, such as cleaning of the filter 9, the user must do rotating the first panel 111 to make the lower end of the first panel 111 face away from the indoor unit body 10 so as to open the front surface of the indoor unit body 10.

In this case, as depicted in FIG. 2A, the first panel 111, rotated to the closed position CP, causes interference between the upper end of the lateral surface 111a of the first panel 111 and the lower end of the lateral surface 112a of the second panel 112, so that a screeching sound and damage to the first panel 111 and the second panel 112.

To prevent such defects, when the user opens the front surface of the indoor unit body 10 for maintenance of the filter 9 or the like, the first panel 111 is brought to the open position OP in the present embodiment. As depicted in FIG. 2B, the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112 are away from each other in the open position OP. The rotation of the first panel 111 will not cause interference between the upper end of the lateral surface 111a of the first panel 111 and the lower end of the lateral surface 112a of the second panel 112, so that the generation of squeaks and damage to the first panel is avoided. 111 and to the second panel 112.

The user can manually move the first panel 111 from the closed position CP to the open position OP. The panel transport mechanism 21 is connected to the motor and this work is inconvenient for the user, so the first panel 111 is preferably transported by the panel transport mechanism 21.

The panel transport mechanism 21 operates when an operation button 81 or a maintenance preparation button 83 preliminarily provided on a remote control device is activated (see FIG.

3, hereinafter referred to as remote controller 80) of the indoor air conditioning unit 1.

For maintenance, the user initially activates the maintenance ready button 83 to cause the panel transport mechanism 21 to move the first panel 111 to the open position OP.

Next, the user turns the first panel 111 so that the lower end faces away from the indoor unit body 10, so as to open the front surface of the indoor unit body 10. Since the movable link 213 of the panel transport mechanism 21 is coupled to the rear surface of the first panel 111, such coupled state therebetween needs to be changed to a rotatable state in which the first panel 111 is rotatable only.

The rear surface of the first panel 111 and the movable link 213 of the panel transport mechanism 21 thus interpose a hinge mechanism 22, a locking mechanism 23 and the panel support mechanism 24.

(4-1) Articulation mechanism 22

The link mechanism 22 is configured to rotate the first panel 111 around the upper end bearing 213a of the movable link 213 so as to open the front surface of the indoor unit body 10 (see FIG. 8).

Specifically, the link mechanism 22 is disposed on the rear surface of the first panel 111 and retains the upper end bearing 213a of the movable link 213. The link mechanism 22 may alternatively be constituted by a shaft mounted on the bearing of upper end 213a of the movable ligature 213 by snap fit.

When the lower end of the first panel 111 is moved away from the indoor unit body 10, the first panel 111 rotates around the upper end bearing 213a of the movable link 213.

(4-2) Locking mechanism 23

FIG. 8 is a perspective view of the locking mechanism 23, disposed on the rear surface of the first panel 111. FIG. 9A is an enlarged perspective view of the locking mechanism 23, located between the first panel 111 and the movable tie 213. FIG. 9B is an enlarged perspective view showing an unlocked state of the lock mechanism 23 of FIG. 9A.

As depicted in FIG. 8, FIG. 9A and FIG. 9B, the first panel 111 has a part that faces the lower end bearing 213b of the movable link 213 and is provided with the locking mechanism 23, configured to restrain the lower end bearing 213b of the movable link 213. The locking mechanism lock 23 includes a jaw 231, a spring 232 and a handle 233. The jaw 231, the spring 232 and the handle 233 are made of the same resin and are molded in one piece in the present embodiment.

(4-2-1) Gag 231

The jaw 231 slides along the rear surface of the first panel 111. The jaw 231 has a jaw tip 231a normally inserted into a hole 213h provided in a lower part of the bottom end bearing 213b of the movable tie 213 to prevent that the lower end bearing 213b is distant from the rear surface of the first panel 111.

(4-2-2) Spring 232

The spring 232 upwardly biases the jaw 231 such that the jaw tip 231a of the jaw 231 is not distant from the hole 213h provided in the lower part of the lower end bearing 213b of the movable ligature 213. The spring 232 is made resin and molded into the shape of an arched beam. Spring 232 has a first end that is retained by the rear surface of first panel 111 and will be referred to as free end 232a. Spring 232 has a second end which is attached to jaw 231 and will be referred to as fixed end 232b. The jaw 231 and the spring 232 provide a locking function for the locking mechanism 23 in the present embodiment.

(4-2-3) Handle 233

The handle 233 is hooked by the user with a finger and is attached to the lower end of the clamp 231. The rear surface of the first panel 111 located in the open position OP and the body 10 of the indoor unit form a gap between them. that allows the user to introduce the hand. When the user engages with the finger and pulls the handle 233 downward, the jaw 231 is lowered and the tip 231a of the jaw exits through the hole 213h provided in the lower part of the lower end bearing 213b of the movable ligature 213, so that the first panel 111 and the lower end bearing 213b of the movable link 213 become separable from each other. The handle 233 provides an unlocking function for the lock mechanism 23 in the present embodiment.

(4-3) Panel support mechanism 24

FIG. 10 is a partial perspective view of the air conditioning indoor unit 1 in a case where the first panel 111 is placed in a maintenance position. As depicted in FIG. 10, when the first panel 111 is moved to a position (hereinafter referred to as "MP maintenance position") where the front surface of the indoor unit body 10 is open, it is necessary to hold the first panel 111 in the maintenance position. MP maintenance to allow the user to carry out the work with both hands.

The panel support mechanism 24 is configured to retain the first panel 111 in the maintenance position MP. As depicted in FIG. 10, the panel support mechanism 24 includes a shaft 24a disposed in the movable link 213 of the panel transport mechanism 21, and the support 25 is rotatably supported by the shaft 24a.

(4-3-1) Shaft 24th

FIG. 11A is a perspective view of panel support mechanism 24 before support 25 operates. FIG. 11B is a perspective view of panel support mechanism 24 after support 25 is in operation. FIG. 12 is a front view of the panel support mechanism 24 before the support 25 operates.

As depicted in FIG. 11A, FIG. 11B and FIG. 12, shaft 24a is in the form of a pin projecting outwardly from the two side surfaces of movable link 213. Shaft 24a is disposed within a portion 213c joining upper end bearing 213a and lower end bearing 213b. of the movable link 213, between the center of the section 213c and the lower end bearing 213b.

(4-3-2) Support 25

The support 25 has an elongated shape that has a section perpendicular to the longitudinal direction and lowered in the form of a U provided with a corner. The bracket 25 has one end provided with an axle hole 25a which receives the axle 24a.

For ease of description, the end of bracket 25 provided with shaft hole 25a will be referred to as first end 251, and the other end as second end 252. When shaft 24a is inserted into shaft hole 25a located in first end 251 , the support 25 can be rotated with respect to the movable tie 213. In case the support 25 is pushed closer to the movable tie 213 and rotated, part of the length 213c of the movable tie 213 fits to a part recess of the bracket 25, and the bracket 25 and the movable tie 213 overlap each other, so that the bracket 25 cannot be pushed further.

In another case where the support 25 stops being pushed closer to the movable link 213, the support 25 rotates away from the movable link 213. As shown in FIG. 11A, support 25 has a center of gravity 25g located above and ahead (so that it is away from the movable link 213) of the axis 24a and therefore naturally rotates away from the movable link 213, unless constrained.

The first end 251 has an end surface including an arc surface 251a having a central angle of 100 degrees around the shaft hole 25a and an inclined surface 251b protruding in the longitudinal direction of the support 25 from the arc surface. 251a.

When the bracket 25 rotates away from the movable tie 213 from the state that the leg portion 213c of the movable tie 213 fits the recessed portion of the bracket 25, the arc surface 251a and the inclined surface 251b rotate simultaneously. The movable ligature 213 has an advance locking surface 213d offset by 60 degrees in a direction of rotation from the inclined surface 251b and facing the inclined surface 251b.

When the bracket 25 rotates 60 degrees away from the movable link 213, the inclined surface 251b touches the advance lock surface 213d to stop the rotation of the bracket 25.

While the lower end bearing 213b of the movable tie 213 and the first panel 111 located in the open position OP remain coupled together, the support 25 is interposed between the rear surface of the first panel 111 and the section 213c of the movable tie. 213 and therefore remains motionless.

(4-3-3) Stand operation 25

When the handle 233 of the locking mechanism 23 (see FIG. 9B) is pulled down, the lower end bearing 213b of the movable tie 213 and the first panel 111 disengage, and the lower end is pulled by the user's hand. of the first panel 111 so that it moves away from the body 10 of the indoor unit, and the link mechanism 22 makes the first panel 111 rotate around the upper end bearing 213a of the movable link 213.

In a case where the first panel 111 starts to rotate away from the indoor unit body 10, the bracket 25 simultaneously starts to rotate around the axis 24a so that it follows the first panel 111. When the first panel 111 reaches the position of MP maintenance, the holder 25 rotates 60 degrees away from the movable tie 213 and the inclined surface 251b touches the locking surface 213d to stop the rotation of the holder 25. Even if the user releases the first panel 111 in this state, the second end 252 of the bracket 25 supports the rear surface of the first panel 111 to stop the first panel 111 at the maintenance position MP and open the front surface of the indoor unit body 10.

In another case where the first panel 111 is returned from an inclined position for maintenance to a vertical position, the bracket 25 is temporarily raised and the first panel 111 is pushed with one hand, so that the second end 252 of the bracket 25 slides on the rear surface of the first panel 111 approaching the movable link 213 of the panel transport mechanism 21. Ultimately, the portion of the span 213c of the movable tie 213 fits into the recessed part of the bracket 25, and the bracket 25 and the movable tie 213 overlap each other, so that the bracket 25 cannot be pushed further. The first panel 111 returns to the vertical position at this point.

As depicted in FIG. 11A, FIG. 11B and FIG. 12, the second end 252 is not located at a body end 25b of the bracket 25, but is temporarily raised rearwardly from a left side surface of the body end 25b of the bracket 25, in a front view of FIG. 12, is then folded to the left and extended along a sheet surface (vertically). The second end 252 is closer to the body 10 of the indoor unit compared to the body end 25b.

Second end 252 offsets from body end 25b of mount 25 as described above. Even if a buckling load is applied from the tip of the second end 252, the second end 252 deforms to generate a force that displaces the body end 25b toward the body 10 of the indoor unit. The support 25 inevitably has a moment towards the body 10 of the indoor unit in this case.

Even if the user mistakenly pushes the first panel 111 without moving the support 25 upward, the second end 252 of the support 25 deforms upon receiving a certain force and subsequently slides on the rear surface of the first panel 111 without causing damage.

As described above, the support 25 of the panel support mechanism 24 is arranged so that it is overlapped by the movable link 213 of the panel transport mechanism 21 when the first panel 111 has the upright posture in the closed position CP and in the open position OP, and lowers under its own weight to support the first panel 111 when the first panel 111 has the inclined posture in the maintenance position MP.

(4-3-4) Other application examples

The panel support mechanism 24 is also applicable to an indoor air conditioning unit that includes a front panel (including a front grille) configured to be non-actuated and to be rotated forward for filter maintenance, such as a indoor air conditioning unit standing on the floor.

The present embodiment exemplifies the first panel 111 in the tilted posture in the holding position MP, supported by the support 25 which moves downward under its own weight from the movable link 213. The present invention should not be limited by such a configuration. For example, support 25 may be rotatably retained by the rear surface of first panel 111 and may be configured to move downward under its own weight from first panel 111 and engage movable link 213 so that it stops when the first panel 111 tilts.

(5) Detailed description of the first airflow direction adjustment sheet 30

FIG. 13A is a perspective view of the first airflow direction adjustment blade 30, which is not in operation. FIG. 13B is a perspective view of the first airflow direction adjustment blade 30, in operation. FIG. 14A is a sectional view taken along the line X-X indicated in FIG. 13A.

As depicted in FIG. 13A, FIG. 13B and FIG. 14A, the first airflow direction adjustment sheet 30 includes a heat insulator 31 made of expanded polystyrene and interposed between a first sheet member 321 constituting the decorative surface 30a, and a second sheet member 322 constituting the decorative surface. Coanda surface 30b. The first sheet member 321 and the second sheet member 322 will collectively be referred to as "sheet member 32".

The first airflow direction adjusting blade 30 is configured to adjust the airflow direction of the air blown from the blow port 5 through the blow flow path 18. As shown in FIG. 4, the first airflow direction adjustment sheet 30 covers the lower end of the blowing door 5, so that the decorative surface 30a is directed just downward when the air conditioning indoor unit 1 is in a stop operation state.

As depicted in FIG. 6, the first airflow direction adjusting blade 30 rotates 180 degrees about an axis 30c when the air conditioning indoor unit 1 starts to work. In this case, the first airflow direction adjusting blade 30 reaches the upper end of the blowing door 5 (see FIG. 14A). In order to avoid interference with the first panel 111, the first airflow direction adjustment blade 30 inevitably rotates after the first panel 111 operates or so as to follow the operation of the first panel 111.

For a simpler description, assume that the first airflow direction adjustment blade 30 rotates 180 degrees around the axis to reach a maximum open position MOP (see FIG. 6).

The first airflow direction adjustment blade 30 remains stationary at the maximum open position MOP, so that the decorative surface 30a is directed upwards and the Coanda surface 30b is directed downwards. During cooling operation, the front suction door 4B of the indoor unit body 10 is located above the decorative surface 30a and indoor air is sucked through it. The blowing door 5 is located below the surface of Coanda 30b and blows cold air outside.

(5-1) Countermeasures against dew condensation on the first airflow direction adjustment sheet 30

The blow door 5 has a top wall that forms a slight gap from the decorative surface 30a to allow indoor air to enter easily. The second sheet member 322 constituting the Coanda surface 30b is cooled with cold air during cooling operation, and the first sheet member 321 constituting the decorative surface 30a is also cooled due to heat transfer, so that the decorative surface 30a has dew condensation.

Heat transfer in the thickness direction of the first airflow direction adjusting sheet 30 is prevented by the expanded polystyrene constituting the heat insulator 31. Consequently, the first sheet member 321 is cooled due to the internal heat conduction of the first sheet member 321 and the second sheet member 322.

Cold air flows along the Coanda surface 30b of the first airflow direction adjustment blade 30, located at the maximum open position MOP. Cool air is drawn off the surface of Coanda 30b at a distal end that has a change in arc curvature. Indoor air is trapped by an eddy formed after separation and comes into contact with the first airflow direction adjustment sheet 30, so as to form dew condensation.

(5-1-1) Concave part 33

To prevent dew condensation as described above, the first airflow direction adjusting sheet 30 is provided with concave portions 33 formed by reducing the thickness of the second sheet member 322. Concave portions 33 are provided at both ends of the first airflow direction adjustment sheet 30, and include a first concave portion 331 and a second concave portion 332.

As depicted in FIG. 14A, when the first airflow direction adjusting blade 30 is located at the maximum open position MOP, the first concave portion 331 is positioned within a range of 20% of a side width of the first adjusting blade. of the airflow direction 30, downstream of an upstream end 30up of the first airflow direction adjusting sheet 30, in the blown airflow.

When the first airflow direction adjustment blade 30 is located at the maximum open position MOP, the second concave portion 332 is positioned within an interval of 20% of the side width of the first airflow direction adjustment blade. airflow direction 30 and upstream of a downstream end 30dp of the first airflow direction adjusting sheet 30, in the blown airflow.

FIG. 14B is an enlarged sectional view of the first concave portion 331. FIG. 14C is an enlarged sectional view of the second concave portion 332. As shown in FIG. 14B and in FIG. 14C, the first concave portion 331 and the second concave portion 332 are formed by reducing the thickness of the second sheet member 322 between 35% and 60%. The first concave part 331 and the second concave part 332 have a minimum thickness t set within a range of 40% to 65% of the thickness of the second sheet member 322, excluding the first concave part 331 and the second concave part 332.

The minimum thickness of the first concave part 331 and the second concave part 332 appears to be preferably as small as possible. The second sheet member 322 according to the present embodiment is produced by resin injection molding, so that the minimum thickness is set within the range of 40% to 65% of the thickness of the second sheet member 322, as a thickness allowing that molten resin flows reliably into a mold. The first concave part 331 and the second concave part 332 each have a bottom having a rear surface supported by the expanded polystyrene constituting the thermal insulator 31 and having no deterioration in its strength.

The first concave portion 331 and the second concave portion 332 each have a concave width set to include a lower concave width w1 sized correspondingly to between 40% and 65% of the thickness of the second sheet member 322 , and a concave inlet w2 sized correspondingly to between 100% and 200% of the thickness of the second sheet member 322, and the concave width is preferably set within a range of 0.6 mm to 2.4 mm.

The heat transferred through the second sheet member 322 is blocked by the parts having the minimum thickness of the first concave part 331 and the second concave part 332, to prevent the decrease in temperature in the sections that go from the first part concave 331 and the second concave part 332 to the first sheet member 321. This also prevents temperature drop in a part in contact with hot air inside to prevent dew condensation.

The first concave part 331 and the second concave part 332 are not limited in number. It is preferred to provide two first concave portions 331 and a second concave portion 332 in view of the fact that an upstream portion of the blown airflow tends to be cooled.

Some indoor air conditioning units have a plurality of grooves in a part where not the blown air but the indoor air impinges. These grooves are provided to retain the condensate to be evaporated by the wind, and are completely different from the first concave part 331 and the second concave part 332, arranged to reduce heat transfer to a starting point and an ending point. where the cold air impinges, where the cold air and the hot air separate from each other.

(5-1-2) Wall 34

The above description assumes that dew condensation is formed by cooled indoor air entering the gap between the top wall of the blow door 5 and the decorative surface 30a, as well as indoor air trapped by the eddy formed after the separation of cold air flowing along the Coanda surface 30b of the first airflow direction adjustment sheet 30.

A different phenomenon from the above can form dew condensation. Namely, the perpendicular airflow direction adjusting sheet 50 can cause cold air flowing along the Coanda surface 30b of the first airflow direction adjusting sheet 30 located at the maximum open position MOP (see FIG. 6), impinges on a side wall outside the walls constituting the blowing door 5, to rotate on the decorative surface 30a.

The decorative surface 30a of the first airflow direction adjustment sheet 30, located at the maximum opening position MOP, and the upper wall outside the walls constituting the blowing door 5, form the gap that has negative pressure, which will cause cold air to flow up to the decorative surface 30a, so that dew condensation is formed in this case.

As depicted in FIG. 13A and in FIG. 13B, the second sheet member 322 according to the present embodiment has a lateral end in the longitudinal direction provided with a wall 34 rising in the thickness direction. When the perpendicular airflow direction adjustment blade 50 makes the air flow to the left and right, the cold air flowing obliquely through the Coanda surface 30b of the first direction adjustment blade of the air flow 30, impinges on the wall 34 and flows below the side wall of the blow door 5, in which case no flow is generated to rotate on the decorative surface 30a of the first air direction adjustment sheet. airflow 30. This setting prevents dew condensation. (6) Detailed description of the second airflow direction adjustment blade 40

In a state where the air conditioning indoor unit 1 is not in operation, as shown in FIG. 4, the second airflow direction adjustment blade 40 is located behind the first panel 111 located in the closed position CP, and above the first airflow direction adjustment blade 30, located in SP home position to make it invisible.

In another state that the air conditioning indoor unit 1 is in operation, as shown in FIG. 6, the first panel 111 moves to the open position OP to open the front end of the blowing door 5, and the first airflow direction adjustment blade 30 rotates to be positioned above the second adjustment blade of the airflow direction 40, so as to open the lower end of the blow door 5 to expose the second airflow direction adjustment sheet 40 through the blow door 5. FIG. 15 is a longitudinal sectional view of the air conditioning indoor unit 1, indicating an angle of inclination of the second airflow direction adjusting blade 40. As shown in FIG. 15, the second airflow direction adjustment sheet 40 has the convex surface 40a directed downward and the concave surface 40b directed upward. The cold air flowing along the upper concave surface 40b thus flows upwards towards the first airflow direction adjustment blade 30. Such flow along the concave surface 40b will be called main airflow. .

The cold air that flows along the lower convex surface 40a continues to flow along the convex surface 40a in parallel with the main airflow if the angle (hereinafter referred to as "0 tilt angle") of the second sheet airflow direction adjustment angle 40 is within a predetermined angle range. The tilt angle 0 of the second airflow direction adjusting blade 40 indicates the angle of a virtual line BL including a frontmost end and a rearmost end of the second airflow direction adjusting blade. 40, relative to a tangent line TL at a terminal end of a scroll 17. When the tilt angle 0 of the second airflow direction adjusting blade 40 is out of the predetermined angle range, the cold air it flows along a curved surface to the middle of it and away from it before being directed towards the first airflow direction adjustment blade 30, to move away from the main airflow.

The cold air flowing along the convex surface 40a is separated immediately after having passed the apex of the convex surface 40a, or in the center of a section joining the apex and one end of the downstream side of the convex surface. convex surface 40a. Indoor air, at a higher temperature than the cold air that no longer flows along the convex surface 40a, enters to form dew condensation.

The section that joins the lowest point and the end of the downstream side of the concave surface 40b will be called the second half of the concave section 40bb, and the section that joins the peak and the end of the downstream side of the convex surface 40a it will be called second half of convex section 40ab.

The present applicant has made tests to find that, when the perpendicular airflow direction adjusting blade 50 according to the present embodiment swings to the left or to the right, the convex second half-span 40ab is likely to at each end of the second airflow direction adjustment sheet 40, have dew condensation.

(6-1) Countermeasures against dew condensation on the second airflow direction adjustment sheet 40

As described above, the cold air is not separated in the convex second half-span 40ab and the second airflow direction adjustment sheet 40 is completely surrounded by cold air, unless the tilt angle 0 of the second airflow direction adjustment sheet 40 does not exceed the predetermined angle to prevent dew condensation on the second airflow direction adjustment sheet 40.

(6-1-1) Relationship between the posture of the second airflow direction adjustment blade 40 and the blown air temperature

The applicant investigated to find that dew condensation is prevented in the case that the tilt angle 0 of the second airflow direction adjusting blade 40 is within a range of 0 degrees to 5 degrees when the air blown has a temperature Tb within the range of 12 °C to 13 °C.

In another case where the user prefers to have an angle of inclination that causes the cold air to separate in the second convex half-span 40ab, in other words, where the angle of inclination 0 of the second air adjustment blade airflow direction 40 is set outside the range of 0 to 5 degrees, the temperature Tb of the blown air must be increased to a range of 14 °C to 16 °C to increase the dew point temperature, which narrows the parameter flexibility.

The applicant intends to widen the range of the tilt angle 0 of the second airflow direction adjusting sheet 40 as well as to prevent dew condensation. To achieve such a purpose, it is necessary that the cold air flowing along the convex surface 40a flows without separating in the second convex half-span 40ab. (6-1-2) Through hole 43

In order to make cold air flow without separating in the convex second half-section 40ab from the convex surface 40a, the second airflow direction adjusting sheet 40 according to the present embodiment has a longitudinal end provided with a Through hole 43 running in the thickness direction of the second airflow direction adjusting sheet 40. The through hole 43 will be described below with reference to the drawings.

FIG. 16A is a perspective view of the second airflow direction adjustment sheet 40. FIG.

16B is a sectional view taken along line Y-Y indicated in FIG. 16A. As depicted in FIG.

16A and in FIG. 16B, the through hole 43 is provided to cause cold air to flow along the second concave half-length 40bb of the concave surface 40b so as to flow to the second convex half-length 40ab of the convex surface 40a. (see dashed arrows indicated in FIG. 16B).

The through hole 43 has an opening 43b arranged in the concave second half-section 40bb and which is located upstream of an opening 43a arranged in the convex second half-section 40ab. The through hole 43 thus extends forward and downward in an oblique downward direction.

The provision of the through hole 43 causes part of the cold air flowing along the concave surface 40b to pass through the through hole 43, flow out towards the second convex half-span 40ab, and flow towards the end of the side. from downstream. This draws in the cold air that had initially flowed along the second convex half-span 40ab, so that it does not separate.

The through hole 43 is a long hole extending in the longitudinal direction of the second airflow direction adjustment sheet 40. The through hole 43 is located at least partially in a length from a region where a virtual plane including a vertical plane 50a of the sheet piece 501, located at the farthest end opposite the swing direction of the perpendicular airflow direction adjustment sheet 50, located at a maximum swing position in actual use, it cuts the second airflow direction adjustment sheet 40 to the closest end, to the region, of the second airflow direction adjustment sheet 40.

As depicted in FIG. 16A, the through hole 43 according to the present embodiment extends in a range of 20% of the total longitudinal extent from each end. In an exemplary case where the perpendicular airflow direction adjustment blade 50 is located at a position of maximum swing to the left, the air has a weak flow in a portion to the right of the airflow direction. region where the virtual plane including the vertical plane 50a of the rightmost sheet piece 501 intersects the second airflow direction adjustment sheet 40 (for example, an interval of 80mm from the right end) , and the airflow is likely to separate from the convex surface 40a of the second airflow direction adjusting sheet 40 and is likely to come into contact with the indoor air, so that dew condensation is formed. When the through hole 43 is arranged to extend in the range of 20% of the total longitudinal extent from each end, the cold air that has passed through the through hole 43 flows along the second convex half-length 40ab from the convex surface 40a so as to attract cold air flowing from an upstream part to the convex second half-span 40ab, and prevent its separation from the convex second half-span 40ab. This prevents indoor air from coming into contact with the second airflow direction adjustment sheet 40, so that dew condensation is prevented.

The through hole 43 is provided as described above in order to prevent dew condensation. Therefore, the present applicant investigated to find that dew condensation is inhibited when the tilt angle 0 of the second airflow direction adjusting blade 40 is within a range of 0 degrees to 32 degrees, when the temperature Tb of the blown air is within the range of 12 °C to 13 °C.

The through hole 43 is not necessarily this long hole, but may alternatively include a plurality of round holes arranged continuously in one direction, or a plurality of "long holes shorter than the long hole according to the previous embodiment" arranged continuously in one direction.

(7) Modification example

In the front panel 11 according to the above embodiment, the second panel 112 is fixed and only the first panel 111 moves to face the second panel 112 so as to open the front surface of the indoor unit body 10. The present invention should not be limited by this configuration, and both the first panel 111 and the second panel 112 can be moved to open the front surface of the indoor unit body 10. FIG. 17 is a longitudinal sectional view of an indoor air conditioning unit 1B not in operation according to the modification example. FIG. 18 is a longitudinal sectional view of the air conditioning indoor unit 1B before starting operation, including a panel transport mechanism in operation. FIG. 19 is a longitudinal sectional view of the air conditioning indoor unit 1B, in operation. As depicted in FIG. 17, FIG. 18 and FIG. 19, the air conditioning indoor unit 1B according to the modification example is different from the air conditioning indoor unit according to the previous embodiment in that the air conditioning indoor unit 1B includes a panel conveying mechanism 21B configured to convey both the first panel 111 and the second panel 112.

The panel transport mechanism 21B is obtained by adding a transport mechanism for the second panel 112 to the panel transport mechanism 21 configured to transport the first panel 111. As shown in FIG. 18, the panel transport mechanism 21B initially moves the first panel 111 forward and upward, and moves the second panel 112 horizontally away from the indoor unit body 10 when the first panel 111 is away from the indoor unit body 10. inside a predetermined distance.

Finally, the first panel 111 stops after moving horizontally a distance D1 and vertically a distance H1 from the body 10 of the indoor unit, as shown in FIG. 19. The second panel 112 stops after moving horizontally from the indoor unit body 10 a distance D2 shorter than the distance D1.

In the air conditioning indoor unit 1B in operation, the second panel 112 opens an upper front surface of the indoor unit body 10, and air passes between the upper front surface of the indoor unit body 10 and the second panel 112. to reach the front surface of the body 10 of the indoor unit. This configuration shortens the air suction path from the front surface of the indoor unit body 10 to achieve a reduction in air resistance.

(8) Features

(8-1)

The air conditioning indoor unit 1 has the through hole 43 which allows part of the blown air to pass in the thickness direction of the second airflow direction adjusting sheet 40. The air passing through the through hole 43 flows accordingly to the downstream end of the convex surface 40a during cooling operation to attract the blown air flowing along the convex surface 40a from the upstream end and prevent the blown air from separating of the convex surface 40a. This prevents hot air from entering, so dew condensation is prevented.

(8-2)

The through hole 43 is formed as this long hole extending in the longitudinal direction of the second airflow direction adjustment sheet 40 to increase the air passing through the through hole 43 and flowing to the downstream end. of the convex surface 40a. This configuration more effectively attracts the blown air flowing along the convex surface 40a from the upstream end, and the blown air is less likely to separate from the lower surface.

(8-3)

Part of the blown air is guided in the forward and downward direction through the through hole 43, so that the air passing through the through hole 43 is likely to flow to the downstream end of the convex surface 40a.

(8-4)

The through hole 43 of the indoor air conditioning unit 1 is located, at least partially, in the section that goes from the region where the virtual plane that includes the vertical plane 50a of the sheet piece 501 located at the farthest end opposite to the swing direction of the direction adjusting blade The perpendicular airflow direction adjustment blade 50, located at the position of maximum swing in actual use, cuts the second airflow direction adjustment blade 40 to the nearest end, to the region, of the second airflow direction adjustment blade. air flow direction 40. The cold air passing through the through hole 43 accordingly flows along the second convex half-length 40ab of the convex surface 40a to attract the cold air flowing from the downstream part. up towards the second convex half of the section 40ab, and prevent it from separating from the second convex half of the section 40ab. This prevents indoor air from coming into contact with the second airflow direction adjustment sheet 40, so that dew condensation is prevented.

(8-5)

The air conditioning indoor unit 1 has the through hole 43 arranged at the longitudinal end of the second airflow direction adjusting sheet 40, and in a manner that allows part of the blown air to flow in the thickness direction. This configuration allows the second airflow direction adjusting blade to be arranged at an angle within the range of 0 degrees to 35 degrees when the temperature of the blown air is within the range of 5°C to 15°C, to achieve excellent ease of use.

industrial applicability

The present invention is useful for a wall-suspended indoor air-conditioning unit as well as an indoor air-conditioning unit standing on the ground.

List of reference signs

1 indoor air conditioning unit

1B indoor air conditioning unit

40 second airflow direction adjustment blade

43 through hole

50 perpendicular blade (perpendicular airflow direction adjustment blade)

50th vertical plane

citation list

patent literature

Patent Literature Document 1: JP 2009-97755 A

Claims (4)

1. An indoor air conditioning unit, such as a wall suspended indoor air conditioning unit, including an airflow direction adjustment blade (40) configured to vertically adjust the airflow direction of the blown air, in which the airflow direction adjusting sheet (40) has at least one through hole (43) provided at a longitudinal end and allowing part of the blown air to pass in a thickness direction; the through hole (43) is inclined so as to extend downward toward a tip of the airflow direction adjusting sheet (40); the through hole (43) is located between a downstream end and a center according to the blown air flow direction, in the air flow direction adjusting sheet (40); Y the indoor air conditioning unit being characterized in that it further comprises: a perpendicular sheet (50) having a vertical plane (50a) that is swung sideways to laterally adjust the direction of the airflow flowing toward the airflow direction adjusting sheet (40), wherein the through hole (43) is located, at least partially, in a section that goes from a region where a virtual plane that includes the vertical plane (50a) of the perpendicular sheet (50) located at the farthest end opposite to the direction Perpendicular blade swing angle (50), located at a maximum swing position, cuts the airflow direction adjustment blade (40) to the nearest end, to the region, of the airflow direction adjustment blade. airflow direction (40). 2. The indoor air conditioning unit according to claim 1, wherein the through hole (43) is a long hole extending in a longitudinal direction of the airflow direction adjusting sheet (40). The air conditioning indoor unit according to claim 1 or claim 2, wherein the through hole (43) guides part of the blown air in the forward and downward direction during cooling operation. 4. The indoor air conditioning unit according to any one of claims 1 to 3, further comprising a scroll configured to guide the conditioned air to a blow port, so that, when the air conditioner has a temperature within a range of 5°C to 15°C, a tangent line at a terminal end of the volute and a virtual line joining a leading end and a trailing end of the adjusting blade of the volute airflow direction, they form an angle within a range of 0 degrees to 35 degrees.