JP2000039170A - Ceiling embedded air conditioning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide ceiling-embedded air-conditioning equipment with the mounting structure of a drain cap for mounting so that it can be detachably and accurately sealed to a drain hole being provided on the bottom surface of an exposed catch pan. SOLUTION: A drain cap 11 is composed of a first waterstop body 12 where the peripheral edge part opposes the outer surface of an exposed catch pan 7, a second waterstop body 13 that is formed with a smaller diameter than the drain hole and is located at the position of the upper level of the inner surface of the exposed catch pan, a cylindrical sealing member 14 that is provided between the first and second waterstop bodies, is formed with a smaller diameter than and higher than the drain hole, is inserted through the drain hole, and is elastic, a flexing means consisting of a screw lever 15 or the like that coordinates with the first and second waterstop bodies for flexing the sealing member. When the drain hole is to be sealed, a drain cap is inserted into the drain hole, and the upper portion of the sealing member is buckled by the buckling means and is pressed to the inner-surface periphery part of the drain hole for sealing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-ceiling type air conditioner, and more particularly, to a drain cap which is detachably attached to a drain hole formed in a bottom surface of a dew tray so as to be accurately sealed. Mounting structure.

[0002]

2. Description of the Related Art A conventional ceiling-mounted air conditioner is, for example, as shown in FIG. 1, FIG. 8A and FIG.
A suction port 2 is provided at the center of the lower surface 1a of the main body casing 1 embedded in the ceiling surface, and an air outlet 3 is provided around the lower surface 1a, and the suction port 2 and the air outlet 3 formed in the main body casing 1 are connected to each other. A blower M including a blower fan 4 having a vertical drive shaft opposed to the suction port 2 and a heat exchanger 6 are provided in an air passage to be connected, and a drain hole on a bottom surface is provided at a lower portion of the heat exchanger 6. A heat insulating member 9 provided with a drain cap 11 which can be attached to and detached from the tray 10,
The configuration is such that a dew receiving tray 7 is provided.

However, in the case where the dew receiving tray 7 is composed of the heat insulating member 9, the drain hole 10 reinforced with the resin coating 9a can be formed thick, so that the drain hole 10 and the drain cap are formed. Although the structure is such that the fitting surface with the housing 11 can be sufficiently secured and can be sealed accurately and water leakage does not occur, in particular, in recent years, as the main body casing 1 has been downsized, The dew receiving tray 7 is formed in a thin shape, and the fitting surface between the drain hole 10 and the drain cap 11 is reduced, so that it is difficult to accurately seal the location and water leakage occurs. Had fear.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, the present invention has a drain cap mounting structure which is detachably mounted in a drain hole formed in the bottom surface of a dew tray so as to be able to seal accurately. It is an object to provide a ceiling embedded type air conditioner.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a main body casing embedded in a ceiling with a suction port provided in the center of the lower surface, an air outlet provided in the periphery of the lower surface, and an inside of the main body casing. An air passage connecting the formed suction port and the air outlet is provided with a blower and a heat exchanger including a blower fan having a vertical drive shaft opposed to the suction port. In a ceiling-embedded air conditioner provided with a dew tray provided with a drain cap that can be attached to and detached from a drain hole on a bottom surface at a lower portion, the drain cap is formed to have a larger diameter than the drain hole, and a peripheral portion thereof is provided. A first water-stopping body facing the outer surface of the dew tray, a second water-stopping body formed smaller in diameter than the drain hole and positioned above the inner surface of the dew-receiving tray, Before being provided between the two water stopping bodies It is formed smaller in diameter than the drain hole, and is formed higher than the drain hole and has a cylindrical sealing member having elasticity that is inserted therethrough. When sealing the drain hole, the drain cap is inserted from below the drain hole and a part of the second water stop body and the sealing member is sealed with the dew receiving tray. And the upper portion of the seal member is buckled by the bending / stretching means and pressed against the inner peripheral edge of the drain hole to seal.

Further, the bending and stretching means includes an insertion hole provided substantially at the center of the first water stopping body, a screw hole provided in the second water stopping body opposed to the insertion hole, and an insertion hole provided in the second water stopping body. It is constituted by a screw rod with a head screwed into the insertion screw hole, and the rotation of the screw rod reduces or expands the interval between the first water stopping body and the second water stopping body to bend and expand the seal member. The configuration is as described above.

Further, the bending and stretching means includes a screw hole provided substantially at the center of the first water blocking body, an insertion hole provided in the second water blocking body opposed to the screw hole, and a screw hole provided in the second water blocking body. A screw-head with a head that is screwed and inserted through the insertion hole, and a ring-shaped stopper that is mounted in a groove formed on the outer peripheral surface of the distal end of the screw-rod and abuts on the upper peripheral edge of the insertion hole of the second water blocking body. With the rotation of the screw rod, the distance between the first water-stopper and the second water-stopper is reduced or enlarged to bend and expand the seal member.

In addition, a step is provided on the second and / or first water-stopping body and the upper and / or lower part of the seal member for mutually engaging the same, and the step-by-step engagement is provided. Thus, these are configured not to be displaced in the circumferential direction.

In addition, a flange facing the outer surface of the dew tray is formed continuously on a lower peripheral edge of the seal member, and the flange is sandwiched between the first water blocking body and the outer surface of the dew tray, and the drain hole is formed. The outer peripheral edge and the inner peripheral edge of the drain hole are double-sealed by the flange and the upper part of the buckled seal member by pressing against the outer peripheral edge.

[0010] The seal member is made of synthetic rubber.

[0011] Further, a convex portion which is inserted into the lower part of the drain hole of the dew tray with almost no gap is continuously formed on the upper part of the first water stopping body, and the convex part is inserted into the drain hole to form the first stopper. It is configured to position the water body.

Further, a counterbore is formed at a lower peripheral edge of the drain hole of the dew receiving tray, and the first water stopping body is formed to have a substantially inverted concave cross section in correspondence with the counterbore, and is formed in a substantially inverted concave portion having the same cross section. It is configured to accommodate the head of the screw rod.

The counterbore is formed in a polygonal shape, and the first water stopping body is formed in a polygonal shape correspondingly.

In addition, a cylindrical spacer is provided between the first water-stopping body and the second water-stopping body to penetrate the screw rod and regulate the first water-stopping body and the second water-stopping body at a predetermined interval. When the upper part of the sealing member is buckled by tightening the screw rod, both ends of the spacer are brought into contact with the first water stopping body and the second water stopping body.

[0015] Further, the spacer is formed integrally with the first water stopping body or the second water stopping body.

[0016] Further, a hand portion for manually rotating the screw rod is continuously formed on the head of the screw rod.

Further, the handle portion is formed in a ridge.

Further, the drain hole of the dew tray is formed in a tapered shape in which the outer surface side of the dew tray is expanded, and the outer peripheral portions of the second water blocking body and the seal member are tapered in correspondence with the drain hole. The structure is formed as follows.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 and FIG.
(A) to FIG. 2 (C) and FIGS. 3 (A) to 3 (D)
4, FIG. 5, FIG. 5 (A) and FIG. 5 (B), FIG.
In FIG. 7, reference numeral 1 denotes a main body casing that is embedded in a ceiling surface to constitute a ceiling-embedded air conditioner, 2 denotes a suction port provided at the center of the lower surface 1 a of the main body casing 1, and 3 denotes a lower surface 1 a
The air outlets 5 provided on the periphery are air passages formed so as to pass through the suction port 2 and the air outlet 3 in the main body casing 1. A heat exchanger 6 and a blower including a fan motor M having a vertically opposed drive shaft and a blower fan 4 provided with a shroud 4a at a lower portion are provided. A dew tray 7 having a drain cap 11 that can be attached to and detached from the drain hole 10 is provided, a bell mouth 2a is provided between the blower fan 4 and the suction port 2, and a lower part of the heat exchanger 6 and the bell mouth 2a are provided. The upper surface is formed in a streamlined manner between the blower and a guide member 2b for guiding the suction airflow from the suction port 2 toward the heat exchanger 6 almost uniformly. I have. The dew tray 7 has a tray portion 8 and / or a heat insulating member 9 attached to the tray portion 8.

As shown in FIGS. 2A to 2C, the drain cap 11 is formed to have a larger diameter than the drain hole 10 and the peripheral edge thereof is opposed to the outer surface of the dew tray 7. And a second water stopping body formed smaller in diameter than the drain hole 10 and positioned above the inner surface of the dew receiving tray 7.
13, and formed between the first water-stop 12 and the second water-stop 13 and smaller in diameter than the drain hole 10, and
A cylindrical sealing member 14 having an elasticity formed higher than the drain hole 10 and inserted therethrough, and linked to the first water stopping body 12 and the second water stopping body 13 to bend and expand the sealing member 14. The drain hole is constituted by bending and stretching means described later.
When sealing 10, the drain cap 11 is inserted from below the drain hole 10 so that the second water blocking body 13 and a part of the seal member 14 are positioned above the inner surface of the dew receiving tray 7, and will be described later. The sealing member
The upper portion 14 is buckled so as to be pressed against the inner peripheral edge of the drain hole 10 to seal it. With this, as the main body casing 1 becomes smaller, the dew tray 7 becomes thinner. Even if it is formed, the fitting portion between the drain hole 10 and the drain cap 11 can be accurately sealed, and a structure in which water leakage does not occur from this location is obtained.

As shown in FIGS. 3 (A) and 3 (B), a bending / extension means linked to the first water-stop 12 and the second water-stop 13 for bending / expanding the seal member 14 is shown as an example. , An insertion hole provided substantially at the center of the first water stop 12
12a, a screw hole 13a provided in the second water blocking body 13 so as to face the insertion hole 12a, and a screw rod 15 with a head 15a which is screwed into the insertion hole 12a and inserted into the screw hole 13a. And
Due to the rotation of the screw rod 15, the distance between the first water stopping body 12 and the second water stopping body 13 is reduced or enlarged, and the sealing member 14
The upper portion of the seal member 14 is buckled, and the drain hole is bent.
The inner peripheral edge of 10 can be pressed evenly, and the drain hole 10 can be sealed accurately. 3A shows a state in which the upper part of the seal member 14 is buckled in the configuration in which the dew pan 7 is made up of the pan section 8 and the dew pan 7 is the pan. FIG. 3B shows a state in which the upper portion of the seal member 14 is buckled in the configuration including the portion 8 and the heat insulating member 9 attached thereto.

The bending and stretching means linked to the first and second water stopping bodies 12 and 13 to bend and stretch the sealing member 14 is shown in FIGS. 2B and 2C as another example. As described above, the screw hole 12a provided substantially at the center of the first water stopping body 12, the insertion hole 13a provided in the second water stopping body 13 facing the screw hole 12a, and the screw holes 12a are provided in the screw holes 12a. A screw rod 15 with a head 15a inserted through the mating insertion hole 13a, and the screw rod 15
A ring-shaped stopper 15d attached to a groove 15c formed on the outer peripheral surface of the distal end of the second water-stop 13 and abutting against the peripheral edge of the upper surface of the insertion hole 13a of the second water blocking body 13. The distance between the first water stopping body 12 and the second water stopping body 13 is reduced or enlarged to bend and expand the seal member 14, whereby the sealing is performed as described in the above example. The upper portion of the member 14 is buckled so that the inner peripheral edge of the drain hole 10 can be evenly pressed, so that the drain hole 10 can be sealed accurately. In addition, about the said one example and another example,
Either one may be adopted according to the design convenience or the like.

As shown in FIGS. 2 (B) and 2 (C), the second water stop 13 and / or the first water stop 12 and the upper and / or lower part of the seal member 14 are provided. A step A is provided for engaging these with each other, and the step A is engaged so that they are not displaced in the circumferential direction. The drain cap 11 composed of the second water stopping body 13 and the seal member 14 can be easily and accurately combined so as not to be displaced, and fitted into the drain hole 10 of the dew receiving tray 7. The structure is such that the workability for sealing is not impaired.

Further, a flange 14a facing the outer surface of the dew receiving tray 7 is continuously formed on the lower peripheral edge of the seal member 14, and the flange 14a is formed by the first water blocking body 12 and the outer surface of the dew receiving tray 7. The outer peripheral edge and the inner peripheral edge of the drain hole 10 are double-sealed by the flange 14a and the upper part of the buckled seal member 14 by pressing and pressing against the outer peripheral edge of the drain hole 10. The outer peripheral edge and the inner peripheral edge of the drain hole 10 can be double-sealed, so that more accurate sealing can be performed so that water leakage does not occur at the location. The structure is as follows.

Further, since the seal member 14 is made of synthetic rubber, the hardness of the seal member 14 can be set appropriately, and the inner peripheral edge portion and / or the outer peripheral portion of the drain hole 10 can be set. The structure is such that the peripheral portion can be sealed accurately and firmly.

Further, on the upper part of the first water stopping body 12, FIG.
As shown in (A), a convex portion to be inserted almost without a gap is continuously formed below the drain hole 10 of the dew receiving tray 7, and the convex portion is inserted into the drain hole 10 to form the first water blocking body 12. By having been positioned, the first water stopping body 12 can be easily,
In addition, the configuration is such that positioning can be performed accurately.

A counterbore 8a is formed at the lower periphery of the drain hole 10 of the dew receiving tray 7, and the first water-stopping body 12 is formed in a substantially inverted concave cross section corresponding to the counterbore 8a. By storing the head 15a of the screw rod 15 and a hook part to be described later in the substantially inverted concave portion 12b, the head 15a and the hand grip of the screw rod 15 are prevented from protruding from the bottom surface of the dew tray 7. , It has a configuration that is also refreshing in design.

As shown in FIG. 6, the counterbore 8a is formed in a polygonal shape, and the first water-stopping body 12 is formed in a polygonal shape corresponding to the counterbore 8a. Or, when it is loosened, the first water blocking body 12 is configured not to rotate together due to friction with the head 15a of the screw rod 15.

Also, the screw rod 15 is inserted between the first water stopping body 12 and the second water stopping body 13 to
A cylindrical spacer 16 that regulates the second water stop 13 and the second water stop 13 at predetermined intervals is provided, and the screw rod 15 is tightened to seal the seal member 14.
When the upper portion of the spacer 16 is buckled, by making both ends of the spacer 16 abut against the first water stop 12 and the second water stop 13, the screw rod 15, both ends of the spacer 16 When tightened until it comes into contact with the first water stopping body 12 and the second water stopping body 13, the inner peripheral edge of the drain hole 10 can be pressed with an appropriate pressing force at the upper part of the buckled seal member 14. The configuration is such that the drain hole 10 can be accurately sealed.

Further, the spacer 16 is provided with the first water stopping body.
By being formed integrally with 12 or the second water stopping body 13, the dimensions and shape can be accurately finished,
The configuration is advantageous in cost.

Also, the head 15a of the screw rod 15 is
As shown in FIG. 3C and FIG. 3D, a hand-holding portion 15b for manually turning the screw rod 15 is formed continuously, so that the finger can be easily hung on the screw rod 15 and tightened easily. It has a configuration that can be loosened.

Further, since the handle 15b is formed as a ridge, as described above, the section 12 has a substantially inverted concave shape.
Even when the head 15a of the screw rod 15 and the handle 15b are accommodated in b, the fingers can be easily hooked on the handle 15b of the ridge.

Further, the drain hole 10 of the dew receiving tray 7 is
As shown in the figure, while the outer surface side of the same dew receiving tray 7 is formed in a tapered shape which is expanded, the outer peripheral portions of the second water stopping body 13 and the sealing member 14 are formed in a tapered shape correspondingly, The drain cap 11 is configured to be easily inserted into and removed from the drain hole 10, and when the drain cap 11 is inserted into the drain hole 10, the drain hole 10 and the drain cap 11 can be accurately brought into close contact with each other. hand,
The configuration is such that the sealing performance at the location can be further improved.

With the above configuration, FIG. 1, FIGS. 2A to 2C, FIGS. 3A to 3D, and FIGS.
As shown in FIGS. 5 (A) and 5 (B), FIGS. 6 and 7, the drain cap 11 is formed to have a larger diameter than the drain hole 10. A first water stopping body 12 facing the outer surface of the receiving tray 7, a second water stopping body 13 formed smaller in diameter than the drain hole 10 and positioned above the inner surface of the dew receiving tray 7, 12 and second water stop
13, a cylindrical seal member 14 having a smaller diameter than the drain hole 10 and being formed higher than the drain hole 10 and having elasticity inserted therethrough; Bending and stretching means linked to the first water stopping body 12 and the second water stopping body 13 in order to bend and stretch, and when sealing the drain hole 10, insert the drain cap 11 from below the drain hole 10. The second water stop 13 and a part of the seal member 14 are positioned on the upper surface of the inner surface of the dew tray 7, and the sealing member 14 is
The upper part of the main body 1 is buckled and pressed against the inner peripheral edge of the drain hole 10 so as to seal the same. The fitting portion between the drain hole 10 and the drain cap 11 can be accurately sealed, and the ceiling-mounted type air conditioner can prevent water leakage from the location.

[0035]

As described above, according to the present invention, a ceiling-embedded air conditioner having a drain cap mounting structure that can be detachably mounted in a drain hole provided in the bottom surface of a dew tray and can be accurately sealed. Machine.

[Brief description of the drawings]

FIG. 1 is a sectional view of a ceiling-mounted air conditioner according to the present invention and a conventional example.

FIGS. 2A and 2B are cross-sectional views of a main part of the ceiling-mounted type air conditioner according to the present invention, wherein FIG. 2A shows a relationship between a drain hole on a bottom surface of a dew tray and a drain cap, and FIG. (C) shows the state after mounting.

FIG. 3 is a cross-sectional view of a main part of the ceiling-mounted air conditioner according to the present invention, in which (A) shows a state in which a drain cap is attached to a dew tray composed of a tray part without a heat insulating member, and (B).
Shows a state in which a drain cap is attached to a dew tray made of a saucer part provided with a heat insulating member, (C) shows a state in which a handle portion of a ridge is continuously formed on a bolt head, and (D) shows ( The arrow a in C) is shown.

FIG. 4 is a sectional view of a main part of the ceiling-mounted air conditioner according to the present invention.

FIG. 5 is a cross-sectional view of a main part of the ceiling-embedded air conditioner according to the present invention, in which (A) shows a state in which a positioning protrusion is provided on the upper part of a first water blocking body constituting a drain cap, B) shows a state in which the first water stopping body is formed in a substantially inverted concave cross section.

FIG. 6 is an exploded perspective view of an essential part of the ceiling-mounted air conditioner according to the present invention.

FIG. 7 is a sectional view of a main part of the ceiling-mounted air conditioner according to the present invention.

8A and 8B are cross-sectional views of a main part of a ceiling-embedded air conditioner according to a conventional example, where FIG. 8A shows an example and FIG. 8B shows another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body casing 1a Bottom surface 2 Suction port 2a Bell mouth 2b Guide member 3 Blow-out fan 4a Shroud 5 Air passage 6 Heat exchanger 7 Dew tray 8 Receiving tray 8a Counterbore 9 Insulation member 10 Drain hole 11 Drain cap 12 First Water stop 12a Insertion hole, screw hole 12b Substantially inverted concave section 13 Second water stop 13a Screw hole, insertion hole 14 Elastic body 14a Flange 15 Screw rod 15a Head 15b Handhold 15c Groove 15d Stopper 16 Spacer A Step

Claims (14)

[Claims] An air passage is provided at a center of a lower surface of a main body casing embedded in a ceiling surface, an air outlet is provided around a lower surface, and an air passage connecting the air inlet formed in the main body casing and the air outlet is provided. In addition, a heat exchanger and a blower comprising a blower fan having a vertical drive shaft facing the suction port are provided, and a lower part of the heat exchanger is provided with a drain cap detachable from a drain hole on a bottom surface. In the ceiling-embedded air conditioner provided with a dew tray, the drain cap is formed to have a larger diameter than the drain hole, and a first water stopping body having a peripheral portion facing an outer surface of the dew tray. A second water stopping body formed smaller in diameter than the drain hole and positioned above the inner surface of the dew tray, and a smaller diameter than the drain hole provided between the first water stopping body and the second water stopping body. And the drain hole A cylindrical sealing member having an elasticity formed by inserting the sealing member, and a bending and stretching means linked to the first water stopping body and the second water stopping body to bend and stretch the sealing member; When sealing the drain hole, the drain cap is inserted from below the drain hole to position a portion of the second water blocking body and the seal member above the inner surface of the dew receiving tray, and the bending and stretching means causes An embedded ceiling air conditioner, wherein an upper portion of a sealing member is buckled and pressed against an inner peripheral portion of the drain hole to seal the drain hole. 2. The bending / stretching means includes: an insertion hole provided substantially at the center of the first water blocking body; a screw hole provided in the second water blocking body opposed to the insertion hole; It is constituted by a screw rod with a head screwed into the insertion screw hole, and the rotation of the screw rod reduces or expands the interval between the first water stopping body and the second water stopping body to bend and expand the seal member. The ceiling-mounted air conditioner according to claim 1, wherein 3. A screw hole provided substantially at the center of the first water stopping body, an insertion hole provided in the second water stopping body opposed to the screw hole, and A screw-head with a head that is screwed and inserted through the insertion hole, and a ring-shaped stopper that is mounted in a groove formed on the outer peripheral surface of the distal end of the screw-rod and abuts on the upper peripheral edge of the insertion hole of the second water blocking body. The rotation of the screw rod reduces or enlarges an interval between the first water-stopper and the second water-stopper so that the seal member bends and expands. Ceiling-mounted air conditioner. 4. A step for mutually engaging the second water stop and / or the first water stop and the upper and / or lower part of the seal member is provided, and the step is engaged. The ceiling-mounted air conditioner according to any one of claims 1 to 3, wherein these are prevented from being displaced in a circumferential direction. 5. A flange facing the outer surface of the dew tray is continuously formed on a lower peripheral edge of the seal member, and the flange is sandwiched between the first water blocking body and the outer surface of the dew tray to form a drain hole. The outer peripheral portion and the inner peripheral portion of the drain hole are double-sealed with the flange and the upper portion of the buckled seal member by pressing against the outer peripheral portion. Item 7. The ceiling-mounted air conditioner according to Item 1. 6. The air conditioner according to claim 1, wherein the seal member is made of synthetic rubber. 7. A convex portion which is inserted substantially without a gap below the drain hole of the dew receiving tray is formed continuously above the first water stopping body, and the convex portion is inserted into the drain hole to form the first stopper. The ceiling-mounted air conditioner according to claim 1 or 5, wherein the water body is positioned. 8. A counterbore is formed at a lower peripheral edge of a drain hole of the dew receiving tray, and the first water stopping body is formed to have a substantially inverted concave cross-section corresponding to the counterbore. The head of the screw rod is accommodated.
Or the ceiling-mounted air conditioner according to claim 5. 9. While forming the counterbore in a polygonal shape,
The ceiling-embedded air conditioner according to claim 8, wherein the first water-stopping body is formed in a polygonal shape correspondingly. 10. A cylindrical spacer is provided between the first water stop and the second water stop to penetrate the screw rod and regulate the first water stop and the second water stop at a predetermined interval, 2. The structure according to claim 1, wherein when the screw rod is tightened to buckle the upper part of the seal member, both ends of the spacer are brought into contact with the first water stop and the second water stop. The ceiling-mounted air conditioner according to claim 5 or claim 7 to claim 9. 11. The ceiling-embedded air conditioner according to claim 10, wherein the spacer is formed integrally with the first water shutoff body or the second water shutoff body. 12. The ceiling-embedded type according to claim 1, wherein a handle portion for manually rotating the screw rod is continuously formed at the head of the screw rod. Air conditioner. 13. The ceiling-embedded air conditioner according to claim 12, wherein the handle is formed as a ridge. 14. A drain hole of the dew receiving tray is formed in a tapered shape in which an outer surface side of the dew receiving tray is expanded, and an outer peripheral portion of the second water stopping body and the sealing member is tapered in accordance with the opening. The ceiling-mounted air conditioner according to claim 1, wherein the air conditioner is formed in a ceiling.