JPH07269921A - Air conditioning device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of dew condensation on an outer case by providing the covering parts having heat insulating property for covering the inner peripheral parts of air holes of the outer case. CONSTITUTION:An outer case 11 is made of steel plate in the form of a rectangular case with an opening in its lower surface and is mounted to ceiling board. The air inlet opening 21b of an air inlet casing 21 is provided around its outer peripheral edge with a covering part 32 projecting to the amount corresponding to the plate thickness of the outer case 11. The air exhaust opening 30 of a supporting body 19 is also provided around its outer peripheral edge with a covering part 33 projecting to the amount corresponding to the plate thickness of the (4) outer case 11. The covering part 32 of the air inlet casing 21 is engaged with the air inlet opening 13 of the outer case 11 to cover its inner peripheral part 13a. The covering part 33 of the supporting body 19 is also inserted into the air exhaust opening 14 of the outer case 11 to cover its inner peripheral part 14a. Since in this way the inner peripheral parts 13a and 14a are covered with their respective heat insulating covering members 32 and 33, the transmission of heat to the outer case 11 can be lessened to prevent the occurrence of dew condensation thereon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which a connecting port of a connecting member is communicatively connected to a ventilation port formed in an outer box.

[0002]

2. Description of the Related Art Conventionally, as an air conditioner, for example, an air conditioning ventilation fan, there is one having a structure shown in FIG. The outer box 1 is arranged on the back side of the ceiling plate 2, the lower surface opening of which faces the indoor side, and the decorative plate 3 having the ventilation holes 3a around it.
Are covered by. Although not shown, an exhaust fan and an intake fan are provided inside the outer box 1, and a heat exchanger for exchanging heat between the exhaust air and the intake air is also provided.

The side plates of the outer box 1 are formed with exhaust ports (not shown) as air vents and intake ports 4 (shown in FIG. 13) on the side plates of the outer box 1. A connection plate 5, which is a connection member, is attached to the. The connection plate 5 has an exhaust connection port (not shown).
Further, the intake connection port 6 (see FIG. 13) is formed, and the connection port bodies 7 and 8 are attached to the respective connection ports. Ducts 7a and 8a are provided in the connection ports 7 and 8, respectively.
Are connected.

FIG. 13 shows a connecting portion between the intake connecting port 6 and the intake port 4. An inner casing 9 having a heat insulating property for holding a heat exchanger is provided on the inner surface of the outer case 1, and the outer casing is also provided. A seal member 10 is provided between the intake port 4 of the box 1 and the intake connection port 6 of the connection plate 5 to seal them. In this configuration, the air taken in by the intake fan flows as shown by arrow A.

[0005]

However, in the above conventional structure, as can be seen from FIG. 13, since the inner peripheral portion of the intake port 4 is exposed to the intake passage side, the heat of the intake air is transferred to the outer box 1. During the heating in winter, the indoor side is in a high temperature and high humidity state, but the temperature of the intake air is low, so that dew condensation occurs on the inner surface of the outer box 1.
Further, in the above-mentioned conventional one, since the inner peripheral portion of the exhaust port, which is another vent port, is exposed to the exhaust passage side, the heat of the exhaust air is transferred to the outer box 1, and during the cooling in summer. In the above, there is a problem that dew condensation occurs on the outer surface of the outer box 1 because the temperature of the exhaust air is low, while the outside of the room (the back side of the ceiling) is hot and humid.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioner in which dew condensation does not occur in an outer box.

[0007]

[Means for Solving the Problems] A first means is an outer box having a vent formed therein, and a connection port attached to the outer surface of the side plate where the vent is present in the outer box and connected in communication with the vent. The present invention is characterized in that a covering portion having a heat insulating property and covering the inner peripheral portion of the vent hole of the outer box is provided (the invention of claim 1).

A second means is the same as the first means, except that an inner casing made of a heat insulating material is mounted inside the outer box,
It is characterized in that a part of the inner casing constitutes a covering portion (the invention of claim 2).

According to a third means, in the first means, a seal member having a heat insulating property is provided between the vent hole of the outer box and the connection port of the connection member, and the seal member has a heat insulating property. Is characterized in that a part thereof constitutes a covering portion (the invention of claim 3). According to a fourth means, in the first means, an inner casing made of a heat insulating material is mounted inside the outer box, and a space between the vent hole of the outer box and the connection port of the connecting member is provided between them. A seal member having a heat insulating property for sealing is provided, and a characteristic is that a part of the inner casing and a part of the seal member constitute a covering portion (the invention of claim 4).

[0010]

In the first means, since the inner peripheral portion of the vent of the outer box is covered with the heat insulating coating, the heat of the air passing through the vent passage is less likely to be transferred to the outer box. ,
Therefore, it is possible to prevent the occurrence of dew condensation on the outer case as much as possible.

In the second means, since the inner peripheral portion of the vent of the outer box is covered with the covering portion formed by a part of the inner casing made of a heat insulating material, the inner casing provided in the outer box is surrounded by the inner periphery of the vent. It can be used for covering parts, and can reduce the number of parts and improve the assemblability.

In the third means, since the inner peripheral portion of the vent hole of the outer box is covered with the covering portion formed by a part of the heat insulating seal member, the seal member is used for covering the inner peripheral portion of the vent hole. Therefore, the number of parts can be reduced and the assemblability can be improved.

In the fourth means, the inner peripheral portion of the vent hole of the outer box is covered by the covering portion formed by a part of the inner casing and a part of the seal member. It can be used for covering the peripheral portion, and the number of parts can be reduced and the assembling property can be improved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention applied to an air conditioning ventilation fan will be described below with reference to FIGS. The outer box 11 is formed of a steel plate into a rectangular box shape whose lower surface is open. This outer box 11 is inserted into an opening 12 a (see FIGS. 4 and 5) formed in the ceiling plate 12 and the ceiling plate 12 is formed. Installed on. Side plate 1 of this outer box 11
In 1a (see FIG. 6), a substantially rectangular intake port 13 serving as a vent and a substantially rectangular exhaust port 14 also serving as a vent are formed.

As shown in FIGS. 4 and 5, an intake fan device 15 and an exhaust fan device 16 are provided inside the outer box 11, and the crossflow heat exchanger 1 is provided.
7 is supported via supports 18, 19 as inner casings, which are held by holding plates 20. That is, in detail, the intake fan device 15
As shown in FIG. 6, is composed of an intake casing 21 formed of a heat insulating material, such as styrofoam, and an intake blade 22 formed of centrifugal blades, and one surface 1a of the intake casing 21 faces slightly downward. It is formed in a slope shape. The suction casing 21 is formed with a suction port 21b and a discharge port 21c, and the suction port 21b has a rectangular shape whose outer surface side is substantially the same as the suction port 13 of the outer box 11. The inner surface has a circular shape.

Further, the exhaust fan device 16 has an exhaust casing 23 made of a steel plate and exhaust blades 24 composed of centrifugal blades. As shown in FIG. 6, the exhaust blades 24 and the intake blades 22 are connected to a rotary shaft of a biaxial motor 26 mounted on a motor mounting plate 25 that also serves as a partition plate. 24 is housed in the exhaust casing 23, and the intake vanes 22 are housed in the intake casing 21 while being inserted into the outer casing 11.

The support 18 is made of styrofoam, and has a main plate portion 18a having a slightly upward slope, an upper plate portion 18b protruding from the upper end thereof, and side plate portions 18c and 18d connected to both sides thereof. It is configured to have.
An intake opening 27 and an exhaust opening 28 are formed on the inner surface of the main plate portion 18a. Further, as shown in FIGS. 4 and 6, a receiving portion 29a for holding the heat exchanger 17 and positioning concave portions 29b, 29b are formed on the inner surfaces of the main plate portion 18a and the side plate portions 18c, 18d. An end surface 18e on the left side of the support 18 is formed in an upward slope shape (see FIGS. 4 and 5).

The support 19 is also made of styrofoam, and has a main plate portion 19a having a substantially vertical surface, an upper plate portion 19b protruding from the upper end thereof, and side plate portions 19c and 19d connected to both sides thereof. It has one and is configured. The side plate portion 19c of the support 19 has an exhaust opening 30
Are formed. Further, as shown in FIG. 6, a receiving portion 31a for holding the heat exchanger 17 and positioning recessed portions 31b, 31b are formed on the inner surfaces of the main plate portion 19a and the side plate portions 19c, 19d. The support 1
The end surface 19e of 9 is formed in a downward slope shape (see FIGS. 4 and 5) in the vertical direction.

As shown in FIGS. 1 and 6, the outer peripheral edge portion of the intake port 21b of the intake casing 21 is covered with a covering portion 32 protruding by an amount corresponding to the plate thickness of the outer box 11. Are formed. In addition, a covering portion 33 is formed on the peripheral edge portion of the support body 19 on the outer surface side of the exhaust opening 30 so as to project by an amount corresponding to the thickness of the outer box 11.

Therefore, the supports 18 and 19 are
The intake fan device 15 and the exhaust fan device 16 are inserted into the outer box 11, and then the end surface 18e of the support 18 and the end surface 19e of the support 19 are butted against each other.
1 is inserted in the heat exchanger 17 and
The positioning concave portions 29b and 31 of the supports 18 and 19
Insert it in b and apply it to the receiving parts 29a, 31a, and
By attaching the holding plate 20 to the opening of the outer box 11 by pressing the support 18 against the upper plate of the outer box 11, the support 18 and 19 and the heat exchanger 17 are fixed in a fall-off state. is doing. In this case, the intake casing 2
The one surface 21a of 1 has a slightly downward slope,
The main plate portion 18a of the base plate has a slightly upward slope shape, the left end surface 18e has an upward slope shape, and the right end surface 19e of the support body 19 has a downward slope shape. As a result, the intake casing 21 and the supports 18, 19 are mounted without rattling. The above-mentioned components are inserted and assembled into the outer case 11 with the outer case 11 being turned upside down in advance.

In this mounting mode, the cover portion 32 of the intake casing 21 is fitted into the intake port 13 of the outer box 11 to cover the inner peripheral portion 13a thereof, as shown in FIG. The covering portion 33 is also inserted into the exhaust port 14 of the outer box 11 to cover the inner peripheral portion 14a thereof, as shown in FIG.

On the other hand, as shown in FIGS. 1, 2 and 6, a connecting plate 34 as a connecting member is attached to the outer surface of the side plate 11a of the outer box 11 by engaging means and screwing means (not shown). There is. Each of the connection plates 34 has an intake connection port 35 and an exhaust connection port 3 as connection ports.
6 are formed, and the intake port 3 is provided in the intake connection port 35.
7, and an exhaust port body 38 is attached to the exhaust connection port 36.

In this case, as shown in FIG. 1 and FIG.
Sealing members 39, 39 made of a material having a heat insulating property, for example, sponge, are respectively fixed to the back surface of the connection plate 34 at the edges of the intake connection port 35 and the exhaust connection port 36 by an adhesive. By mounting the plate 34,
The sealing members 39, 39 are provided between the intake port 13 of the side plate 11a and the intake connection port 35 of the connection plate 34, and the exhaust port 14.
It is located between the exhaust port 36 and the exhaust connection port 36 so as to seal the spaces between them. In addition, as shown in FIG. 3, ducts 37a and 3 are provided in the intake port body 37 and the exhaust port body 38, respectively.
8a is connected. In addition, the lower surface opening of the outer box 11 is
It is adapted to be covered with a decorative plate 41 having a long and narrow ventilation hole 40 around it.

In the above structure, when the motor 26 is driven to rotate the intake vanes 22 and the exhaust vanes 24, first, the intake vanes 22 are rotated to cause the rotation of the intake vanes 22 and the exhaust vanes 24, as shown in FIGS.
As indicated by an arrow A, the outdoor air is sucked into the intake casing 21 through the duct 37a, the intake port body 37, the intake port 13 portion, and the intake port 21b of the intake casing 21. Outlet 21 of casing 21 for
It is discharged from c and is supplied to the room through the intake opening 27 of the support 18 and the one ventilation passage of the heat exchanger 17. In this case, since the inner peripheral portion 13a of the intake port 13 is covered with the covering portion 32, the heat of the intake air is rarely transferred from the inner peripheral portion 13a of the intake port 13 to the outer box 11.

On the other hand, the rotation of the exhaust vanes 24 causes room air to flow into the indoor air as shown by the arrow B in FIGS. 2 and 5, and the ventilation hole 40 of the decorative plate 41 and the suction port 23a of the exhaust fan casing 23 (FIG. 5). Through the exhaust fan casing 23, is discharged from the discharge port 23b of the exhaust fan casing 23, and is communicated with the exhaust opening 28, the other air passage of the heat exchanger 17, Exhaust opening 30 of support 19, exhaust port 14 portion, exhaust port body 3
8. It is discharged to the outside through the duct 38a. In this case, since the inner peripheral portion 14a of the exhaust port 14 is covered with the covering portion 33, the heat of the exhaust air is rarely transferred from the inner peripheral portion 14a of the exhaust port 14 to the outer box 11. Also,
The exhaust air and the intake air described above are heat-exchanged by the heat exchanger 17.

According to this embodiment having the above-mentioned structure, the inner peripheral portion 13 of the intake port 13 and the exhaust port 14 which are the ventilation ports of the outer box 11.
a and 14a are covered with a heat insulating member 3
Since they are covered with 2 and 33 respectively, the heat of the exhaust air and the intake air can be prevented from being transferred to the outer case 11 as much as possible, and as a result, the occurrence of dew condensation on the outer case 11 can be prevented as much as possible. In particular, the covering portion 32 is effective for preventing dew condensation during heating in winter. That is, during heating in winter, the indoor side is in a high temperature and high humidity state, but the temperature of the intake air is low, so there was a problem that dew condensation occurs on the inner surface of the outer box due to heat transfer at the intake port, In the present embodiment, such a problem can be eliminated by covering the inner peripheral portion 13a of the intake port 13 with the covering portion 32. Further, the covering portion 33 is effective in preventing dew condensation during cooling in summer. That is, during cooling in the summer, there is a problem that dew condensation occurs on the outer surface of the outer box because the temperature of the exhaust air is low, while the outdoor side (behind the ceiling) is in a high temperature and high humidity state. Since the inner peripheral portion 14a of the discharge port 14 is covered with the covering portion 33, such a problem can be eliminated.

Further, according to the present embodiment, the covering portion 32 is provided on the intake casing 21 as an inner casing made of a heat insulating material.
Since the intake casing 21 is formed,
It can be used for covering the inner peripheral portion 13a of No. 3, and the number of parts can be reduced and the assemblability can be improved. In this case, since the covering portion 32 is fitted into the intake port 13, the intake casing 21 can be positioned with respect to the outer box 11. Furthermore, according to the present embodiment, since the cover portion 33 is formed on the support body 19 as an inner casing made of a heat insulating material, the support body 19 can be used for coating the inner peripheral portion 14a of the exhaust port 14, This also makes it possible to reduce the number of parts and improve the assemblability. Also in this case,
Since the covering portion 33 is fitted into the exhaust port 14, the support 19 can be positioned with respect to the outer box 11.

FIG. 7 shows a second embodiment of the present invention. This embodiment differs from the first embodiment in the following points. That is, the intake casing 21 has a covering portion 32.
Is not formed. Further, the seal member 51 is made of a heat insulating and elastically deformable member such as sponge. Then, the seal member 51 is compressed by mounting the connecting plate 34 on the side plate 11b of the outer box 11 so as to slightly press it, and as a result, the covering portion 52 is formed on the seal member 51 as shown in FIG. The covering portion 52 covers the inner peripheral portion 13a of the intake port 13.

In the second embodiment, the seal member 51 can be used for covering the inner peripheral portion 13a of the intake port 13, so that the number of parts can be reduced and the assemblability can be improved. Since it is not necessary to form the covering portion 32 on the casing 21, the mold structure of the intake casing 21 can be simplified. In particular, in this case, since the covering portion 52 is formed by utilizing the elastic deformation of the seal member 51, the covering portion need not be formed at the stage of forming the seal member 51, and thus the seal member 51 can be easily formed. .

FIG. 8 shows a third embodiment of the present invention. The third embodiment differs from the second embodiment in the following points. That is, the inner dimension C of the intake port 21 a of the intake casing 21 is made equal to the inner dimension D of the intake port 13. Accordingly, by attaching the connection plate 34, the sealing member 51 is provided with the covering portion 53 that covers not only the inner peripheral portion 13a of the intake port 13 but also the inner surface of the intake port 21a. Also in the third embodiment, the same effect as that of the second embodiment can be obtained.

FIG. 9 shows a fourth embodiment of the present invention. The fourth embodiment differs from the first embodiment in the following points. That is, the protrusion 21 is longer than the plate thickness of the outer casing 11 into the inlet 21a of the intake casing 21 (longer than the protrusion length of the covering portion 32 in the first embodiment).
The covering portion 61 is formed, and the protruding end of the covering portion 61 is pressed against the connection plate 34. Since this covering portion 61 also serves as a seal member, the seal member can be dispensed with, and the work of adhering the seal member is also unnecessary, so that the number of parts can be reduced and the assemblability can be improved as a whole. .

FIG. 10 shows a fifth embodiment of the present invention. The fifth embodiment differs from the first embodiment in the following points. That is, the intake port 21a of the intake casing 21 is covered with the inner peripheral part 13a of the intake port 13 and the cover part 71 is formed so as to be inscribed in the inner peripheral surfaces of the exhaust connection port 35 and the intake port body 37. There is. According to the fifth embodiment, the separate seal member can be eliminated, and the cover portion 71 can facilitate the positioning of the intake port body 13.

FIG. 11 shows a sixth embodiment of the present invention. In this embodiment, the projection 21d formed on the intake casing 21 and the projection 81a formed on the seal member 81 are covered. The part 82 is configured. The covering portion 82 covers the inner peripheral portion 13 a of the intake port 13. In this case, the seal member 81 is pre-molded with a material that is not expected to be elastically deformed, such as styrofoam, so as to have the shape shown in FIG.

However, according to the sixth embodiment, the intake casing 21 and the seal member 81 are connected to the intake port 13.
Since it can be used for coating the inner peripheral portion 13a of the above, it is possible to reduce the number of parts and improve the assemblability. Also, the covering portion 8
Since the respective projecting portions 21d and 81a that form part 2 are fitted into the intake port 13, the intake casing 21 for the outer box 11
Can be positioned, and the intake port body 37 can be positioned with respect to the intake port 13.

The structures shown in the second to sixth embodiments can be applied to the exhaust port 14 and the same effects can be obtained. The present invention is not limited to the above embodiments, and the exhaust casing 23 may be formed of a heat insulating material such as styrofoam. Further, the connecting member may be a single piece of the intake port body 37 or the exhaust port body 38 instead of the connection plate 34 (in this case, the opening of each port body corresponds to the connection port). In addition, the present invention is not limited to an air conditioning ventilation fan, but can be widely applied to an air conditioner such as being applicable to an air conditioner or the like.

[0036]

As is apparent from the above description, the present invention can obtain the following effects. According to the invention of claim 1, since the inner peripheral portion of the vent of the outer box is covered with the heat insulating covering, it is possible to prevent the heat of the air passing through the ventilation path from being transferred to the outer box as much as possible. Therefore, it is possible to prevent the occurrence of dew condensation on the outer box as much as possible. According to the invention of claim 2, since the inner peripheral portion of the ventilation port of the outer box is covered with the covering portion formed by a part of the inner casing made of a heat insulating material, the inner casing provided in the outer box is provided with the inner peripheral portion of the ventilation port. It can be used for coating, and the number of parts can be reduced and the assemblability can be improved.

According to the third aspect of the present invention, since the inner peripheral portion of the vent hole of the outer box is covered with the covering portion formed of a part of the heat insulating seal member, the seal member is covered with the inner peripheral portion of the vent hole. Therefore, the number of parts can be reduced and the assemblability can be improved.

According to the fourth aspect of the present invention, since the inner peripheral portion of the vent hole of the outer box is covered with the covering portion formed by a part of the inner casing and a part of the sealing member, the inner casing and the sealing member are It can be used for covering the inner peripheral portion of the vent hole, and can reduce the number of parts and improve the assemblability.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an intake port portion showing a first embodiment of the present invention.

FIG. 2 is a vertical side view of an exhaust port portion.

FIG. 3 is a partially cutaway perspective view.

FIG. 4 is a vertical sectional front view of an intake fan device portion.

FIG. 5 is a vertical sectional front view of an exhaust fan device portion.

FIG. 6 is an exploded perspective view

FIG. 7 is a vertical sectional side view of a main part showing a second embodiment of the present invention.

FIG. 8 is a vertical sectional side view of a main part showing a third embodiment of the present invention.

FIG. 9 is a vertical sectional side view of a main part showing a fourth embodiment of the present invention.

FIG. 10 is a vertical sectional side view of a main part showing a fifth embodiment of the present invention.

FIG. 11 is a vertical sectional side view of a main part showing a sixth embodiment of the present invention.

FIG. 12 is a view corresponding to FIG. 3 showing a conventional example.

FIG. 13 is a view equivalent to FIG.

[Explanation of symbols]

11 is an outer box, 13 is an intake port (vent), 14 is an exhaust port (vent), 15 is an intake fan device, 16 is an exhaust fan device, 18 and 19 are supports (inner casing), 2
Reference numeral 0 is a holding plate, 21 is an intake casing (inner casing), 32 and 33 are covering portions, 34 is a connecting plate (connecting member), 35 is an intake connecting port (connecting port), and 36 is an exhaust connecting port (connecting port). Mouth), 39 is a seal member, 51 is a seal member, 52 is a covering portion, 61 is a covering portion, 71 is a covering portion, 81
Is a seal member, and 82 is a covering part.

Claims (4)

[Claims] 1. An outer box provided with a vent, and a connecting member having a connection port which is attached to an outer surface of a side plate where the vent is present in the outer box and has a connection port which is communicated with the vent. An air conditioner having a heat insulating property and provided with a covering portion for covering an inner peripheral portion of a vent of the outer box. 2. The air conditioner according to claim 1, wherein an inner casing made of a heat insulating material is mounted inside the outer box, and a part of the inner casing constitutes a covering portion. 3. A seal member having a heat insulating property is provided between the ventilation port of the outer box and the connection port of the connection member, and a part of the seal member constitutes a covering portion. The air conditioner according to claim 1, wherein the air conditioner is provided. 4. An inner casing made of a heat insulating material is mounted on the inner side of the outer box, and has a heat insulating property between the vent hole of the outer box and the connection port of the connecting member to seal them. The air conditioner according to claim 1, wherein a seal member is provided, and a part of the inner casing and a part of the seal member constitute a covering portion.