JP4806568B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner having a substantially V shape in a side view and including a heat exchanger composed of a front heat exchanger part and a rear heat exchanger part, and in particular, a rear heat exchange. The present invention relates to an improvement of a drainage treatment structure that guides drain water dripping from a vessel part to a side drainage channel.

  In order to secure a sufficient heat exchange area and suppress the height dimension of the heat exchanger itself, thereby reducing the height dimension of the indoor unit body, it is substantially V-shaped in side view, There is a tendency that an indoor unit of an air conditioner including a heat exchanger composed of an exchanger unit and a rear heat exchanger unit is frequently used.

  In this indoor unit, a front drain pan is arranged at the lower part of the front heat exchanger part, and a rear drain pan is arranged at the lower part of the rear heat exchanger part, and each drain pan exchanges heat with each heat exchanger part. It receives drain water generated by the action. The drain water received by the rear drain pan is guided to the front drain pan through a side drainage channel comprising a gutter provided between both side ends of the rear drain pan and the front drain pan.

The front drain pan receives drain water generated in accordance with the heat exchange action of the front heat exchanger, and the drain water guided through the side drainage channel joins. A drain port body to which a drain hose is connected is provided in the front drain pan, and all drain water received by the rear drain pan and the front drain pan is quickly drained to the outside through the drain hose.
Japanese Patent No. 3235948

  By the way, the problem in the drain pan structure lies in the guide structure that guides drain water received by the rear drain pan to the side drainage channel. That is, there is a vertical drop between the bottom of the rear drain pan and the bottom of the side drainage channel. To reach.

  Therefore, when the drain water reaches the side drainage channel, it rebounds and is scattered around. Depending on the amount of water, after flowing around the lower surface of the rear drain pan, it may drip into the drainage channel or splash into the air duct or the side wall of the indoor unit main body without flowing down to the side drainage channel, causing water leakage from the indoor unit main unit. There was a fear of doing.

  As a countermeasure, a separate lid is put on the upper surface of the side drainage channel to prevent the drain water from scattering. Therefore, there is no risk of water splashing and water leakage, but the number of components in the indoor unit body increases and the number of assembly steps increases. Moreover, since the drainage channel is hermetically sealed by covering the lid and is always kept in a damp state, problems such as the occurrence of mold occur.

  The present invention has been made on the basis of the above circumstances, and the object of the present invention is to provide a rear channel by providing an optimally configured guide channel over a vertical drop from the rear drain pan to the side drainage channel. An object of the present invention is to provide an indoor unit of an air conditioner that can ensure drain water from a drain pan to a side drainage channel and improve drainage treatment efficiency.

In order to satisfy the above object, the indoor unit of an air conditioner according to the present invention includes a front panel and a rear body, the indoor unit body having a suction port and a blowout port, and a heat exchanger is disposed in the indoor unit body. It is substantially V-shaped when viewed from the side, and is composed of a front heat exchanger portion located on the front side of the indoor unit body and a rear heat exchanger portion located on the rear side, so that the blower is covered with the heat exchanger. It is arranged in and sucks room air from the suction port, distributes it to the heat exchanger and blows it from the blowout port,
The air passage communicating with the air outlet through the heat exchanger and the blower from the suction port, the rear drain pan disposed at the lower portion of the rear heat exchanger portion, and the lower portion of the front heat exchanger portion The side drain pan, a side drain channel that is provided with a drop in the vertical direction on both side ends of the rear drain pan, and that guides the drain water collected by the rear drain pan to the front drain pan, and the rear unit provided in the side drain channel The vertical direction of the water splash prevention rib which the drain pan side end is substantially the same height as the rear drain pan and is formed gradually lower toward the front drain pan, and the side end of the rear drain pan and the side drain channel Is formed on a substantially V-shaped road surface having a width at the upper end side connected to the side end of the rear drain pan wider than that of the lower end side connected to the side end of the side drainage channel. The upper end to the lower end Have a guide channel which is inclined obliquely outward over,
The rear drain pan is composed of a back wall, an inner wall provided inside the back wall at a predetermined interval, and a bottom wall integrally connecting the back wall and the lower end of the inner wall, There ing and the upper end of the guide channel.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect which can aim at the improvement of drainage treatment efficiency by ensuring the guidance of drain water from a rear drain pan to a side drainage channel.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic longitudinal sectional view of an indoor unit of an air conditioner. (Note that parts not marked in the description are not shown. The same applies hereinafter.)
The indoor unit body 1 includes a front panel 2 that is a front housing and a rear body 3 that is a rear housing, and has a horizontally long shape in the width direction with respect to the vertical direction. A front suction port 4 is opened at a part of the front side of the front panel 2, and a panel 2 </ b> A supported by an opening / closing drive mechanism is fitted into the front panel 2 facing the front suction port 4.

There is a predetermined gap between the front surface of the front heat exchanger section 8A and the panel 2A, and the upper and lower end portions of the panel 2A are provided with openings communicating with the indoor side, and indoor air is introduced to the front surface of the front heat exchanger section 8A. A suction port 4 is formed. In addition, an upper surface suction port 5 is provided in the upper portion of the front panel 2, and a frame-like beam is fitted into the upper surface suction port 5 and is partitioned into a plurality of spaces by the beam.

  A blowout port 6 is formed at the lower end of the front panel 2 and the lower end of the rear main body 3, and a plurality of blowout louvers 7 are provided at the blowout port 6. Each blow-out louver 7 can open and close the blow-out opening 6 according to its rotation posture, or can set the blow-out direction of the heat exchange air according to operating conditions.

  In the indoor unit main body 1, a heat exchanger 8 formed in a substantially inverted V shape by the front heat exchanger portion 8A and the rear heat exchanger portion 8B is disposed. The front heat exchanger section 8A is formed in a substantially parallel curved shape with a gap with the front panel 2, and faces the entire front suction port 4 and a part of the upper suction port 5. The rear heat exchanger portion 8B is formed in a straight shape, is inclined obliquely, and opposes the upper surface suction port 5.

  An indoor blower 10 is disposed between the front and rear heat exchanger portions 8A and 8B so as to be covered with the heat exchanger 8. The indoor blower 10 includes a fan motor disposed in a space at one side end of the indoor unit body 1, one support shaft is mechanically connected to the rotation shaft of the fan motor, and the other end supported by a bearing member. It is composed of a cross-flow fan. The axial length of the cross-flow fan coincides with the width direction length of the heat exchanger 8 and is disposed so as to be correctly opposed.

  The rear main body 3 is integrally formed with a front drain pan 12a disposed below the front heat exchanger portion 8A and a rear drain pan 12b disposed below the rear heat exchanger portion 8B. In other words, the front drain pan 12 a is located on the front side of the indoor unit body 1, along the lower end portion of the front suction port 4, and directly above the outlet port 6. The rear drain pan 12b is located on the rear surface side of the indoor unit main body 1 and is located above the front drain pan 12a.

  The front drain pan 12a receives drain water dripped from the front heat exchanger section 8A, and the rear drain pan 12b receives drain water dripped from the rear heat exchanger section 8B. The rear main body 3 is integrally provided with a side drainage channel R illustrated in FIG.

  The side drainage channel R is provided between both side ends of the rear drain pan 12b and both side ends of the front drain pan 12a from a position where there is a drop in the vertical direction. Therefore, the drain water received by the rear drain pan 12b is guided to the front drain pan 12a via the side drainage channel R.

  The outer wall surfaces of the front and rear drain pans 12a and 12b are provided in the vicinity of the indoor blower 10 to form a nose for the cross flow fan of the indoor blower 10. Before becoming a nose, the side wall portions of the rear drain pans 12a and 12b and the respective sides of the outlet 6 are connected by a partition member 14.

  The space surrounded by the partition member 14 forms a part of the air passage 15 that communicates the front inlet 4 and the upper inlet 5 through the heat exchanger 8 and the blower 10 to the outlet 6. As described above, the rear body 3 is integrally provided with the front drain pan 12a, the rear drain pan 12b, the side drainage channel R, and the blower channel 15.

Next, the side drainage channel R will be described in detail.
FIG. 2 is a plan perspective view of the state in which the front panel 2, the heat exchanger 8 and the blower 10 are removed from the indoor unit main body 1 and the rear main body 3 is left as viewed obliquely from the upper left on the front side.
Most of the center of the rear main body 3 excluding the left and right side portions is a portion that forms the air blowing path 15. A rear drain pan 12b is provided along the upper end of the air passage 15, and a front drain pan 12a is provided along the lower side. Furthermore, a part of the outlet 6 is formed along the lower portion of the front drain pan 12a.

  Side drainage channels R are provided along the left and right side portions of the blower channel 15. Specifically, the rear end of the side drainage channel R has a vertical drop with respect to the rear drain pan 12b side end, and the front end communicates with the front drain pan 12a side end. In particular, the right side portion of the right side drainage channel R is a mounting space for mounting the fan motor constituting the blower 10.

  Since both the left side drainage channel R and the right side drainage channel R have the same configuration, only the left side drainage channel R is illustrated and described below, and the right side drainage channel R is described and illustrated below. A new explanation is omitted by applying.

3 is an enlarged plan view of the left side portion of the rear main body 3, FIG. 4 is a side view of the left side portion of the rear main body 3, and FIG.
The side drainage channel R includes an inner partition plate 20 projecting so as to make a boundary with the blower channel 15, and an outer partition projecting in parallel at a predetermined interval on the outer side of the inner partition plate 20. It consists of a plate 21 and a bottom plate 22 that integrally connects the lower ends of the inner and outer partition plates 20, 21. Accordingly, the side drainage channel R has a substantially U-shaped cross section with the inner and outer partition plates 20 and 21 and the bottom plate 22.

  The protruding edges of the inner partition plate 20 and the outer partition plate 21 are cut into a semicircle. A receiving plate 23 is provided in parallel with a predetermined interval on the outer side of the outer partition plate 21, and the protruding edge of the receiving plate 23 is similarly cut into a semicircle. A bearing base (a motor band for restraining the fan motor on the right side) is placed on the semicircular cutouts of the inner and outer partition plates 20 and 21 and the receiving plate 23.

  The bearing base is for attaching a bearing at the end of the cross flow fan constituting the blower 10. Although the upper surface side of the side drainage channel R formed by the inner partition plate 20, the outer partition plate 21, and the bottom plate 22 is open, the bearing base (motor band) is disposed so that a part of the upper surface opening is formed. Closed.

  The rear drain pan 12b is formed by branching from the rear surface of the rear main body 3, the upper half is inclined obliquely toward the front, and the lower half is vertical, and the rear wall A has a predetermined interval. The inner wall B is provided at the same angle and in parallel with the obliquely inclined portion of the back wall A, and the bottom wall C integrally connects the back wall A and the lower end of the inner wall B.

  In the side drainage channel R, water splash prevention ribs 25 are integrally provided along the side end of the rear drain pan inner wall B and at a contact portion with the bottom wall C of the side drainage channel R. The water splash prevention rib 25 is parallel to the inner and outer partition plates 20 and 21 on the bottom plate 22 at a substantially intermediate portion between the inner partition plate 20 and the outer partition plate 21 in the side drainage channel R at a predetermined interval. Is provided.

  The upper ends of the water splash preventing ribs 25 have substantially the same height as the rear drain pan 12 b and are formed at the same height as the upper ends of the inner partition plate 20 and the outer partition plate 21. The water splash prevention rib 25 is formed so as to be gradually lowered from the upper end toward the lower end, and actually protrudes from the bottom plate 22 of the side drainage channel R by a predetermined height (several mm).

  The rear drain pan 12b is formed of a rear wall A, an inner wall B, and a bottom wall C in a substantially U-shaped cross section, but between the bottom wall C of the rear drain pan 12b and the bottom plate 22 of the side drainage channel R. , A vertical drop is formed. A guide channel 30 described later is provided between the vertical drops. That is, the guide channel 30 includes a channel surface that communicates the side end of the rear drain pan 12b and the side end of the side drainage channel R.

  If it demonstrates, only the side end of the inner surface wall B which comprises the rear part drain pan 12b will protrude sideways rather than the side end of the bottom wall C. The protruding end of the inner wall B extends downward with the same inclination angle as that of the inner wall B, and is connected to the vertical portion of the back wall A. The inverted triangular portion surrounded by the bottom wall C of the rear drain pan 12b, the back wall A below the bottom wall C, and the inner wall extension Bz is the guide channel 30.

  Since the upper end of the guide channel 30 is integrally connected to the rear drain pan bottom wall C, the width dimension of the upper end of the guide channel 30 is the same width dimension as the rear drain pan bottom wall C. The lower end of the guide channel 30 is common to the contact portion between the rear drain pan back wall A and the inner wall extension Bz.

  Therefore, as shown in FIG. 4, the guide channel 30 forms a substantially V-shaped unequal triangular road surface whose upper end is inclined obliquely downward with respect to the front surface, the left oblique side is vertical and the right oblique side is inclined obliquely. . The upper end is common to the bottom wall C of the rear drain pan 12b, the left oblique side is common to the rear wall A vertical portion, and the inner oblique wall extension Bz is used as it is for the right oblique side.

In the guide channel 30, the width dimension on the upper end side connected to the side end of the rear drain pan 12 b is wider than the width dimension on the lower end side connected to the side end of the side drainage channel R. And as shown in FIG. 3 and FIG. 5, the flow surface which inclines diagonally outward from the upper end to the lower end is made.
The left-side drainage channel R and the guide channel 30 are configured as described above, and the right-side drainage channel R has substantially the same structure as the left-side drainage channel R and includes the guide channel 30 having the same configuration. . The difference is that the left side drainage channel R and the receiving plate 23 support the bearing of the blower 10 as described above, whereas the right side drainage channel R and the receiving plate 23 support the fan motor of the blower 10. It is only to support the motor band that restrains.

When an operation start signal is sent from a remote controller (remote control panel) (not shown), the control unit opens the movable panel 2A and is a heat exchanger. The refrigeration cycle operation for 8 is performed and the blower 10 is driven.
The indoor air is sucked from the front suction port 4 and the upper suction port 5 and flows through the heat exchanger 8, and at this time, it performs a heat exchange action. The heat exchange air after heat exchange with the heat exchanger 8 is guided along the air blowing path 15 and blown out into the room through the blowout port 6. Therefore, air conditioning for the room is performed.

During the cooling operation, drain water is generated and dropped in the heat exchanger 8. The drain water dropped from the front heat exchanger section 8A is received by the front drain pan 12a, and the drain water dropped from the rear heat exchanger section 8B is received by the rear drain pan 12b.
Since the rear drain pan 12b is higher than the front drain pan 12a and the both ends of the rear drain pan 12b and the front drain pan 12a communicate with each other via the left and right side drainage channels R, the drain water received by the rear drain pan 12b. Is led to the right and left side drainage channel R and further collected in the front drain pan 12a.

In particular, there is a drop in the vertical direction between both side ends of the rear drain pan 12b and the left and right side drainage channels R. Since the guide channel 30 is formed here, the guide channel 30 is connected to the rear drain pan 12b. The drain water is smoothly guided to the left and right side drainage channels R through 30.
In other words, the guide channel 30 is formed so that the width of the upper end side, which is the side end of the rear drain pan 12b, is wider than the width of the lower end side, which is the side end of the side drainage channel R, and forms a substantially V-shaped surface. In addition, it is inclined obliquely outward from the upper end to the lower end.

Therefore, the drain water placed on the guide channel 30 from the rear drain pan 12b flows smoothly on the surface of the guide channel 30 and is guided to the left and right side drainage channels R. When it reaches the left right drainage channel R, it is led to the central portion of the side drainage channel R without being scattered.
Moreover, the water splash prevention rib 25 is provided from the position in contact with the lower end of the guide channel 30 in the left and right side drainage channel R to the front drain pan 12a. Since the base end portion of the water splash preventing rib 25 has substantially the same height as the rear drain pan 12b and is gradually formed lower toward the downstream side, the drain water flows from the rear drain pan 12b to the left and right sides through the guide channel 30. When drain water flows down to the partial drainage path R, the drainage water adheres to the surface of the inner partition plate 20 that forms a partition with the airflow path 15, thereby preventing condensation on the airflow path 15 side.

Therefore, the drain water flowing along the guide channel 30 does not enter the air passage 15 via the inner partition plate 20, and there is a possibility that the drain water is included in the heat exchange air blown from the outlet 6 Because there is nothing, comfort can be maintained.
In addition, although the base end part of the water splash prevention rib 25 is substantially the same height as the rear drain pan 12b, by forming it low from here to the downstream side (front drain pan 12a side), the inner and outer partition plates 20, 21 A sufficient gap can be secured between them.

Therefore, when manufacturing the rear main body 3, the thickness of the inner and outer partition plates 20 and 21 projecting in parallel can be sufficiently secured. Since the resin material can be effectively filled, it is possible to prevent the inner and outer partitions 20 and 21 from being thinned and to improve the quality without reducing the strength of the rear main body 3.
Further, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

The schematic sectional side view of the indoor unit of the air conditioner based on one Embodiment in this invention. The top perspective view which looked from the front side left diagonal upper direction of the rear main body based on the embodiment. The top view of the left side part of a rear main body based on the embodiment. The side view of the left side part of a rear main body based on the embodiment. The upper part perspective view of the left side part of a rear main body based on the embodiment.

Explanation of symbols

  4 ... Front suction port, 5 ... Upper surface suction port, 6 ... Outlet port, 2 ... Front panel, 3 ... Rear body, 1 ... Indoor unit body, 8A ... Front heat exchanger part, 8B ... Rear heat exchanger part, DESCRIPTION OF SYMBOLS 8 ... Heat exchanger, 10 ... Air blower, 15 ... Air flow path, 12b ... Rear drain pan, 12a ... Front drain pan, R ... Side drainage channel, 30 ... Guide flow path, 25 ... Water splash prevention rib

Claims (1)

An indoor unit body that includes a suction port and a blowout port and includes a front panel and a rear body, and is disposed in the indoor unit body and has a substantially V shape in a side view, and is positioned on the front side of the indoor unit body A heat exchanger composed of a front heat exchanger part and a rear heat exchanger part located on the rear surface side, and a heat exchanger arranged so as to be covered by the heat exchanger and sucking room air from the suction port In an indoor unit of an air conditioner equipped with a blower that circulates to
The rear main body constituting the indoor unit main body is
An air passage communicating from the suction port to the outlet through a heat exchanger and a blower;
A rear drain pan disposed at a lower portion of the rear heat exchanger section;
A front drain pan disposed at the bottom of the front heat exchanger section;
Side drainage channels that are provided with a drop in the vertical direction on both side ends of the rear drain pan, and that guide and distribute the drain water collected by the rear drain pan to the front drain pan,
The water drainage prevention rib provided in the side drainage channel, the rear drain pan side end portion being substantially the same height as the rear drain pan, and gradually formed lower toward the front drain pan,
The width of the upper end connected to the side end of the rear drain pan is provided between the side end of the rear drain pan and the side end of the side drainage channel in the vertical direction. A guide channel that is formed on a substantially V-shaped road surface wider than the width of the lower end side connected to the side end of the road, and that is inclined obliquely outward from the upper end to the lower end,
The rear drain pan is composed of a back wall, an inner wall provided inside the back wall at a predetermined interval, and a bottom wall integrally connecting the back wall and the lower end of the inner wall. an indoor unit of an air conditioner end, wherein Rukoto such as the upper end of the guide channel.

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