JP2002243186A - Ceiling installation type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high comfortability ceiling installation type air conditioner to eliminate a temperature difference in a vertical direction in a room without generating draft. SOLUTION: An air conditioner body 2 is provided with air supply means 20 and 22 for circulation to suck hot air residing in the vicinity of a ceiling 3 and supplying it downward not through a heat exchanger 12 during heating operation are provided separately from air supply means 11 and 30 to supply original temperature regulated air through the heat exchanger 12. This constitution eliminates a temperature difference in a vertical direction in a room without generating draft to a user.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air conditioner having a circulation function.

[0002]

2. Description of the Related Art FIGS. 18 and 19 show the structure of an embedded ceiling air conditioner 1 having a centrifugal fan, which is an example of a conventional ceiling mounted air conditioner.

First, reference numeral 2 in FIGS. 18 and 19 denotes a cassette type main body casing of the ceiling-mounted type air conditioner 1. The main body casing 2 is buried in the ceiling 3 so that a rectangular decorative panel 4 on the lower surface side is continuous with the ceiling 3 of the room in substantially the same plane.

The decorative panel 4 of the main body casing 2 is provided with a square air inlet 5 at the center, and a funnel-shaped air flow guide of a circular cylindrical bell mouth 15 inside the decorative panel 4. The centrifugal fan 11 described later is provided continuously in the direction of the rotation axis. Further, rectangular air outlets 9 having a predetermined length and a predetermined width are provided on the outer peripheral portion 4 of the air suction port 5 of the decorative panel 4 of the main body casing 2. .

On the other hand, in the main body casing 2, an all-circumferential ventilation passage 1 that makes a U-turn from the air suction port 5 through the bell mouth 15 to the air outlets 9, 9.
0, which is located at the center of the downstream portion (upper portion in the drawing) of the bell mouth 15 of the air passage 10 and on the air suction side thereof (on the air suction opening side edge 6a side of the shroud 6 described later). Is a centrifugal fan 1 corresponding to the bell mouth 15
1 is provided. The centrifugal fan 11 has its main plate 1
4 The boss 14a part integrally formed at the center is fixed to the rotation drive shaft 13a of the fan motor 13 and the ceiling panel 2a of the main body casing 2 via the fan motor 13.
It is hung horizontally rotatably by being connected and fixed to the lower surface of the.

The air passage 10 is provided with an air heat exchanger 12 having a generally rectangular annular structure surrounding the centrifugal fan 11. The heat exchanger 12 is supported by a drain pan 29 on the decorative panel 4. The drain pan 29 has side walls of a predetermined height on the inner peripheral side and the outer peripheral side, respectively, and forms a drain groove for receiving the heat exchanger 12 therebetween.

On the other hand, the centrifugal fan 11 has a central boss portion 14a fixed to the rotary drive shaft 13a of the fan motor 13 protruding high in the lower air suction direction, and has an edge portion having a predetermined width on the outer periphery. A main plate (hub) 14 having an inverted hat shape in cross section and a central air suction port side opening edge 6a forming an air suction port in the centrifugal direction in the centrifugal fan 11 has a small diameter and a downstream outer peripheral edge 6b side. The upper and lower are provided with a substantially funnel-shaped shroud 6 whose diameter gradually increases toward
Are arranged side by side in the circumferential direction at a predetermined blade angle and a predetermined blade interval according to the rotation direction. A downstream air outlet side edge 15b of the bell mouth 15 is axially loosely fitted in the air inlet opening side edge 6a of the shroud 6 so as to be relatively rotatable with a predetermined gap in the axial direction. Have been.

The air inlet of the bell mouth 15 is connected from the air inlet 5 of the main casing 2 to the air inlet 6a of the shroud 6 forming the air inlet of the centrifugal fan 11. Air from the centrifugal fan 11
As shown in the figure, in order to allow the fluid to smoothly flow in the centrifugal direction, the inside extends upward from the vicinity of the inner periphery of the mounting edge portion 15a on the decorative panel 4 side, and has a funnel shape from the air flow upstream side to the air flow downstream side. It has an airflow guide surface that reaches an opening edge 15b of the airflow outlet side on the shroud 6 side through an airflow inlet portion having a predetermined radius of curvature whose opening diameter is gradually reduced. Then, corresponding to the shroud 6 of the centrifugal fan 11 due to its shape, the air to the suction side of the centrifugal fan 11 is first efficiently sucked in the direction of the rotation axis of the centrifugal fan 11 on the bell mouth 15 side. By guiding the blown air as smoothly as possible in the centrifugal direction on the blowing side by the surface of curvature of the shroud 6 in the centrifugal direction, the air can be passed through the heat exchanger 12 without drift and heat exchange can be performed. It blows out from 9, 9, ....

The air blown out from the air outlets 9, 9,..., For example, during a heating operation, if the air blowing direction is controlled to be downward, the draft feeling to the user's head is increased. The inclination angles of the passages of the air outlets 9, 9,... Or the wind direction control plates 40, 40.
In order to prevent the draft from being generated, the air conditioner is controlled to be directed outward and horizontally, and is blown out above the room. Thereafter, the temperature around the user is comfortably controlled by natural convection.

[0010]

However, in the case of the above-mentioned conventional air conditioner structure, warm air is blown to an upper position in the indoor space where no draft is generated.
There is a problem that the warm air stays near the ceiling and does not come down to the lower part, so that the warm air stays in the upper part of the room, and effective heating of the feet of the user cannot be performed. That is, temperature unevenness in the vertical direction occurs in the indoor space.

The present invention has been made to solve such a problem, and at least during heating operation.
Separately from the temperature control air blower that blows out the original temperature-controlled air through the heat exchanger into the air conditioner body, it draws warm air near the ceiling without passing through the heat exchanger and blows it downward. Provided is a highly comfortable ceiling-mounted air conditioner in which a ventilation means is used to circulate with air at an appropriate temperature and eliminate the temperature difference in the vertical direction of the indoor space without causing drafts to users. The purpose is to do so.

[0012]

In order to achieve the object, the present invention is provided with the following means for solving the problems.

(1) The ceiling-mounted air conditioner of the present invention is an air conditioner body 2
In addition, separately from the blowing means 11 and 30 for blowing out the original temperature-controlled air through the heat exchanger 12, the warm air remaining near the ceiling 3 without passing through the heat exchanger 12 during the heating operation is removed. By providing the ventilation means 20, 22, 24 for circulation that sucks in and blows downward, the temperature difference in the vertical direction in the room is eliminated without causing draft to the user.

Therefore, according to the above configuration, first, during the cooling operation, the blowing means 11, 3 for blowing out the original temperature-regulated air.
Due to 0, the temperature-controlled air (cool air) is blown out from the air outlet through the heat exchanger 12 and descends gradually by natural convection, thereby realizing a comfortable cooling air conditioning environment for the user.

On the other hand, during the heating operation, the air is blown out from the other air outlets by the circulating air blowing means 20, 22, and 24 and stays near the ceiling 3 to reduce the temperature to some extent. Air is blown out,
The effective circulation of the indoor air is performed by the warm air that is blown out and does not feel the draft near the ceiling where the temperature is lowered to some extent, and the temperature unevenness in the vertical direction of the indoor space is effectively eliminated. You.

(2) The second aspect of the present invention is a ceiling-mounted air conditioner according to the first aspect of the present invention, wherein the second air blowing means 20, 22, and 24 blow air for circulation. Is a circulating air supply from an air intake 9a provided separately from a temperature control air supply passage 10 from the air intake 5 to the air outlet 9 via the heat exchanger 12 to the air outlet 9b. It is characterized by being provided in the passage 9c.

Therefore, in this configuration, efficient circulation can be performed by the ventilation passage 9c dedicated to circulation.

(3) The third aspect of the present invention is a ceiling-mounted air conditioner according to the first aspect of the present invention, wherein the second air blowing means 20, 22, 24 for blowing air for circulation is provided. Is characterized in that it is provided in a ventilation passage 10 for temperature control from the air inlet 5 to the air outlet 9 via the heat exchanger 12.

Therefore, in this configuration, it is not necessary to separately provide a ventilation passage dedicated to circulation, and the configuration is simple and the cost is reduced accordingly.

(4) The invention according to claim 4 The ceiling-mounted air conditioner according to the present invention is the air conditioner according to the above-described claim 3, wherein the second air blowing means 20, 22, 2 is provided.
Numeral 4 is provided on the downstream side of the heat exchanger 12, and is characterized in that the air passage 10 between the heat exchanger 12 and the heat exchanger 12 is closed and shut off by passage opening / closing means 61a, 61b during circulation. And

Therefore, in this configuration, at the time of the circulation in which the second air blowing means 20, 22, 24 are driven, the air blowing passage 1 for temperature control between the second air blowing means 20, 22, and the corresponding heat exchanger 12.
0 is closed and shut off by the passage opening / closing means 61a, 61b, and only warm air having a temperature that does not feel the draft near the ceiling 3 is sucked in and blown downward without passing through the heat exchanger 12, so that indoor air is blown out. Circulated.

(5) The invention of claim 5 The ceiling-mounted air conditioner of the present invention is characterized in that
In the configuration of the invention described in 2, 3, or 4, during cooling operation, the second ventilation means 20, 2 for circulation is used.
Nos. 2 and 24 are characterized in that they are kept stopped.

Therefore, during the cooling operation, the heat exchanger 1
Only the temperature-controlled air (cool air) via the air outlet 2 is blown out from the air outlet and descends gradually by natural convection, so that a comfortable cooling air-conditioning environment for the user is realized.

(6) The ceiling-mounted air conditioner of the present invention is an air conditioner body 2
A plurality of air blowing means 30A and 30B corresponding to each of a plurality of air outlets 9 and 9 communicating with a common air suction port 5 of the air conditioner main body 2 are provided therein. Each of the means 30A and 30B blows out the temperature-controlled air through the heat exchanger 12 from each of the air outlets 9 and 9, and during the heating operation, the plurality of air blowing means 30A and 30B.
30B, the temperature-regulated air from the air outlet 9 corresponding to one of the air outlets 9 via the heat exchanger 12 and the other air blowing means 30B, 30A from the corresponding air outlet 9 on the other side to the vicinity of the ceiling 3. It is characterized by stagnating warm air being blown out.

Therefore, according to the configuration, first, during the cooling operation, each of the plurality of blowing means 30A and 30B causes the temperature-controlled air (cool air) through the heat exchanger 12 to flow to the corresponding plurality of air outlets 9. , 9 are commonly blown out and gradually descend downward by natural convection, thereby realizing a comfortable air conditioning environment for the user.

On the other hand, during the heating operation, the temperature-controlled air (warm air) through the heat exchanger 12 from one of the plurality of air outlets 9, 9 by one of the plurality of blowing means 30A, 30B. ) And the other blowing means 3
0B and 30A, the corresponding air outlet 9 on the other side emits warm air staying in the vicinity of the ceiling 3 which is temporarily blown out and whose temperature is lowered to a certain extent, so that the draft near the ceiling does not feel a draft. As a result, the entire room air is circulated, and the temperature unevenness in the vertical direction of the indoor space is effectively eliminated.

(7) The ceiling-mounted air conditioner according to the present invention, in the configuration according to the sixth aspect of the present invention, wherein the switching of the air blowing state between the cooling operation and the heating operation is performed by heat exchange. Passage 39 by passage opening / closing means 70 provided in the bypass passage 39 portion of the vessel 12
It is characterized by being opened and closed.

Therefore, according to the configuration, first, at the time of the heating operation, the passage opening / closing means 70 causes the heat exchanger 1 to operate.
The portion of the bypass passage 39 that bypasses 2 is opened. Then, the heat exchanger 12 is bypassed to one of the three air blowing means 30B, and the same air blowing means 30B blows out warm air that does not feel the draft staying near the ceiling 3 downward, thereby forcing indoor air. The temperature distribution in the vertical direction in the room is made uniform by uniform circulation.

On the other hand, during the cooling operation, the portion of the bypass passage 39 that bypasses the heat exchanger 12 is closed by the passage opening / closing means 70, and the outside of each of the plurality of blowing means 30 A, 30 B is passed through the heat exchanger 12. The cool air is blown out in the horizontal direction and blows out above the room, and then the cooling air temperature around the user is adjusted comfortably by the cool air falling by natural convection.

[0030]

As described above, according to the ceiling-mounted air conditioner of the present invention, an appropriate circulation action can be exhibited during the heating operation, and the blown hot air does not stay near the ceiling. , So that it can reach near the floor.

As a result, the conventional temperature unevenness in the vertical direction of the indoor space is eliminated, and the temperature distribution is uniform and comfortable temperature control is possible.

Further, since the circulation is performed by warm air that has been blown out once and the temperature has decreased to some extent,
The draft feeling given to the user is extremely small.

Further, unlike the case of increasing the blowing amount to extend the reach of the warm air, there is no need to increase the capacity of the blower.

[0034]

(Embodiment 1) First, FIGS.
1 shows a configuration of an embedded ceiling air conditioner, which is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 1 of the present invention.

Reference numeral 2 in FIGS. 1 to 3 denotes a cassette type main body casing of the ceiling-mounted air conditioner 1. The main body casing 2 is buried in the ceiling 3 so that the decorative panel 4 on the lower surface side thereof is substantially flush with the ceiling of the room in the same manner as in the above-described conventional example. Has become.

The decorative panel 4 of the main body casing 2 is provided with an air inlet 5 at a central portion, and further, an air flow guide portion of a bell mouth 15 is provided inside the air inlet 5 in the rotation axis direction of a centrifugal fan 11 described later. It is continuously installed toward. A rectangular air outlet having a predetermined length and a predetermined width for blowing out the original air for temperature control is provided on the outer peripheral portion 3 of the air suction port 5 of the decorative panel 4 of the main body casing 2. 9,9,9, and the other one,
Particularly, at the time of heating, the air suction port 9a for sucking the air for circulation without passing through the heat exchanger 12, and the air blowing for circulation for blowing the sucked air downward without passing through the heat exchanger 12. An outlet 9b is provided for each.

On the other hand, inside the main body casing 2, a three-circumferential temperature-controlling air blow U-turn from the original temperature control air inlet 5 through the bell mouth 15 to the air outlets 9, 9, 9. A passage 10 is formed, which is located at the center of the downstream part (upper part in the drawing) of the bell mouth 15 of the blower passage 10 and on its air suction side (the air suction opening side edge 6a side of a shroud 6 described later). The centrifugal fan 11 corresponding to the bell mouth 15 is provided. The centrifugal fan 11 has a boss 14a integrally formed at the center of the main plate 14 fixed to a rotation drive shaft of a fan motor (not shown), and the main casing 2
Is connected to and fixed to the lower surface of the ceiling panel 2a.

The air passage 10 is provided with an air heat exchanger 12 having a U-shaped structure as a whole so as to surround the three sides of the centrifugal fan 11. The heat exchanger 12
Is supported above the decorative panel 4 via a drain pan (not shown).

On the other hand, the centrifugal fan 11 has a central boss portion 14a fixed to the rotary drive shaft of the fan motor protruding high downward in the air suction direction, and an edge portion having a predetermined width on the outer peripheral side. A main plate (hub) 14 having an inverted hat-shaped cross-section and an air inlet opening edge 6 at the center forming an air inlet in the centrifugal direction in the centrifugal fan 11;
a has a small diameter and a funnel-shaped shroud 6 whose diameter is gradually increased in a parabolic shape toward the blow-out end side outer peripheral edge 6b, and a plurality of blades 11a, 11a,.
Are arranged side by side in the circumferential direction at a predetermined blade angle and a predetermined blade interval according to the rotation direction. Also, its shroud 6
The bell mouth 1 is located in the opening edge 6a of the air inlet side.
5, a downstream air outlet side opening edge 15b is loosely fitted in a predetermined dimension in the axial direction so as to be relatively rotatable while maintaining a relatively predetermined gap.

The air inlet of the bell mouth 15 is connected to the air inlet side edge 6a of the shroud 6 forming the air inlet of the centrifugal fan 11, and the air inlet of the lower surface of the main casing 2 is formed. In order to allow the air from the inside 5 to smoothly flow in the centrifugal direction in the centrifugal fan 11, as shown in the drawing, it extends upward from the vicinity of the inner periphery of the mounting edge 15 a on the decorative panel 4 side, From the air flow downstream side to an air flow guide surface reaching the shroud 6 side air outlet side opening edge 15b via an air inlet having a predetermined radius of curvature with an opening diameter gradually reduced in a funnel shape. I have. The shape of the centrifugal fan 1 depends on its shape.
1 and the centrifugal fan 11 corresponding to the shroud 6.
At the bell mouth 15 side, the air to the suction side is first efficiently sucked in the direction of the rotation axis of the centrifugal fan 11, and then the surface of the shroud 6 in the centrifugal direction as smoothly as possible in the centrifugal direction on the outlet side. By guiding the blown air, the air is allowed to pass through the heat exchanger 12 without drift and heat exchange is performed, and then blown out from the three air outlets 9, 9 and 9.

For example, in the case of a heating operation, if the air blowing direction is controlled to be downward in the case of the heating operation, the draft blowing from the air blowing outlets 9, 9, 9 will increase the sense of draft to the user's head. From the above, the passage angles of the air outlets 9, 9, 9 themselves are inclined in the outer peripheral side horizontal direction, and the wind direction control plate provided in the passage is controlled in the outward horizontal direction so as not to generate draft, Blow it out above the room,
After that, the temperature around the user is comfortably controlled by natural convection.

However, in such a case, warm air is blown out to an upper position where the draft does not occur in the room as it is, so that the warm air stays near the ceiling and does not descend to the lower side, and the upper part of the room does not descend. In this case, there is a problem that it is impossible to effectively heat the user's feet. That is, temperature unevenness in the vertical direction occurs in the indoor space.

Therefore, in the case of this embodiment, in order to solve the same problem, the centrifugal blow-out of the original temperature-regulated air a through the heat exchanger 12 into the main casing 2 of the air conditioner 1 is performed. Instead of passing through the heat exchanger 12 separately from the first air blowing means composed of the fan 11, the warm air b near the ceiling 3 which has been blown out and whose temperature has dropped to such an extent that no draft is felt is sucked in, By providing the second air blowing means for circulation that blows downward, the temperature difference in the vertical direction of the indoor space is eliminated without causing draft to the user.

That is, the second for the circulation
The blowing means of the cross flow fan 20
A circulation air inlet 9a and an air outlet 9 provided on the other side of the decorative panel 4.
As shown in FIG. 3, the space above the space b is separated from the air passage 10 for temperature control via a partition 16 and a U-shaped guide 17 having an arc-shaped surface is located above the space and extends from the inner peripheral side to the outer peripheral side. And a vertically extending partition plate 18 extending to an intermediate position between the air inlet 9a and the air outlet 9b is provided below the air inlet 9a.
A reverse U-shaped ventilation passage 9c extending from the air outlet 9b to the air outlet 9b is formed, and has a scroll portion 19a and a tongue portion 19b located downstream thereof, that is, above the air outlet 9b. It is provided.

Therefore, in the case of this configuration, first, during the cooling operation, the temperature-controlled air (cool air) through the heat exchanger 12 is supplied to the three-way by the centrifugal fan 11 as the first blowing means for blowing out the original temperature-controlled air. Air is blown out horizontally from the air outlets 9, 9, 9 and gradually descends downward due to natural convection, thereby realizing a comfortable air conditioning environment for the user.

On the other hand, during the heating operation, the centrifugal fan 11 as the first blowing means blows temperature-controlled air (warm air) through the heat exchanger 12 from the air outlets 9, 9, 9, The warm air stagnating near the ceiling 3 sucked in from the air outlet 9b through the air inlet 9a is blown out from the air outlet 9b by the crossflow fan 20 for circulation, which is the blowing means of No.2. As a result, the warm and cool air near the ceiling 3 which is once blown out and has such a low temperature as not to make a draft feel, makes it possible to properly and effectively circulate the indoor air from the air outlets 9, 9, 9 above. By doing so, the temperature unevenness in the vertical direction of the indoor space is effectively eliminated without making the user feel a draft.

(Embodiment 2) Next, FIG. 4 and FIG.
9 shows a configuration of an embedded ceiling air conditioner that is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 2 of the present invention.

In this embodiment, an inverted U-shaped circulating ventilation passage 9c, the same air inlet 9a, and the same air outlet 9 having the same configuration as that of the first embodiment are used.
(b) The cross flow fan 20 is provided at two opposing opposite sides of the main casing 2 of the air conditioner 1.

According to such a configuration, the above-described circulating action occurs more effectively and as uniformly as possible in the entire room.

Further, the capacity of the cross flow fans 20, 20 can be reduced.

(Embodiment 3) FIG. 6 shows a configuration of an embedded ceiling air conditioner which is an example of a ceiling mounted air conditioner having a circulation function according to Embodiment 3 of the present invention. Is shown.

This embodiment is characterized in that the same circulating device as that in the first and second embodiments is formed by propeller fans 22 instead of the cross flow fan 20 described above. It is assumed that.

In the case of the propeller fans 22, 22, since the partition plate 18 is an axial fan, the above-mentioned partition plate 18 is formed in a substantially cylindrical shape having an oblong cross section as shown in the figure, and an air suction passage is formed on the outer peripheral side thereof. By forming an air blowing passage on the circumferential side, an inverted U-shaped blowing passage 9c similar to those of the first and second embodiments is formed.

Then, for example, a plurality of propeller fans 22, 22 are provided in the above-mentioned inner peripheral side air blowing passage portion to draw in and blow out warm air b at a temperature at which the draft near the ceiling 3 is not felt as indicated by an arrow.

In this case, the airflow guide plate 23 on the top surface is
As shown in the figure, it is preferable that a portion corresponding to the axis of the propeller fans 22, 22 at the center thereof is protruded in the axial direction of the propeller fans 22, 22, into a substantially conical shape having a predetermined dimension.

(Embodiment 4) Next, FIG. 7 shows a configuration of a ceiling-mounted air conditioner which is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 4 of the present invention. Is shown.

In this embodiment, the propeller fan 22 in the configuration of the third embodiment is replaced with the centripetal fan 24.
The other parts are all the same as those of the third embodiment and perform the same functions.

With such a configuration, the same operation and effect as in the third embodiment can be obtained.

(Embodiment 5) Next, FIG. 8 shows a configuration of an embedded ceiling air conditioner which is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 5 of the present invention. Is shown.

This embodiment employs the same centripetal fan 24 as that of the above-described fourth embodiment, and performs a similar operation at a lower cost than the above-described fourth embodiment. Characterized in that the blower of the present invention is constituted.

That is, in this configuration, in the fourth embodiment,
A ventilation passage 9c dedicated to circulation is formed in the main body casing 2 as shown in FIG.
Instead of incorporating the centripetal fan 24 as the air blowing means, as shown in the figure, the lower surface side corresponding portion forming the air inlet 9a and the air outlet 9b of the main body casing 2 is formed by a continuous integral decorative panel 4. After being closed, a cylindrical body 26 having an elliptical cross section is attached to the lower side thereof, and a plurality of centripetal fans 24, 24 are juxtaposed in the left-right longitudinal direction inside the cylindrical body 26. Then, the centripetal fans 24,
24 are provided with air inlets 9a, 9a.

According to such a configuration, the centripetal fan 2
By arranging the cylindrical body 26 provided with 4 and 24 as a unit as a circulation unit, it can be easily attached to the lower surface of the decorative panel 4 in an external state.

In the same configuration, as shown by the arrow in the figure, the opening at the lower end of the cylindrical body 26 eventually forms the air outlet 9b for circulation, so that a plurality of inner and outer peripheral wall portions are formed. The warm air b, which is drawn from the air suction ports 9a, 9a, and has a temperature that does not allow the draft near the ceiling to be felt, flows into the circulation air passage 9c in the cylindrical body 26.
The air is blown downward from the air outlet 9b via the air outlet to realize the same circulating action as in the above embodiments.

(Embodiment 6) Next, FIG. 9 shows a configuration of an embedded ceiling air conditioner which is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 6 of the present invention. Is shown.

This embodiment adopts, for example, a two-way blower instead of the four-way blower (multi-flow type) of the above-described first embodiment, and uses the heat exchanger 12 The same cross-flow fan 30 is also used as the first blowing means for blowing out the temperature control air a. Other configurations on the side of the ventilation device for circulation are the same as those of the first embodiment shown in FIGS. 1 to 3 and perform the same operations.

In the drawing, reference numeral 19 denotes a partition plate, 19a denotes a scroll portion of the cross flow fan 20, 19b denotes a tongue of the cross flow fan 20, and 27 denotes a casing side scroll of the cross flow fan 30 for blowing out temperature-controlled air. Department,
28 is a casing side tongue of the cross flow fan 30;
Reference numeral 29 denotes a drain pan that supports the heat exchanger 12.

(Embodiment 7) Next, FIGS.
Shows the configuration of a ceiling-mounted air conditioner that is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 7 of the present invention.

In this embodiment, a two-way blown ceiling-mounted air conditioner 1 as in the sixth embodiment described above using cross flow fans 30A and 30B of the same capacity.
However, in the case of the present embodiment, during the cooling operation, the first and second crossflows of the same capacity capable of blowing out the original temperature control air a via the heat exchanger 12 together. The second crossflow fan 30B on one side of the fans 30A and 30B is also used as a second ventilation means for circulation particularly during a heating operation.

That is, the ceiling-embedded air conditioner 1 of this embodiment is configured as follows.

Reference numeral 2 in FIGS. 10 and 11 denotes a cassette type main body casing of the ceiling-mounted type air conditioner 1. The main body casing 2 is buried in the ceiling such that the decorative panel 4 on the lower surface side thereof is substantially flush with the ceiling of the room.

The decorative panel 4 of the main body casing 2 is provided with an elongated air suction port 5 located at the center in the front-rear direction and extending to the left and right ends. 1, second cross flow fan 30
A first and a second temperature control ventilation passages 10a and 10b that are divided in two directions toward the directions A and 30B are provided in series. Further, a rectangular air outlet having a predetermined width, which is long in both left and right directions for blowing out the original air for temperature control, is provided at two sides before and after the air inlet 5 of the decorative panel 4 of the main body casing 2. 9, 9 are provided. The air outlet 9 corresponding to the second cross flow fan 30B on the other side is used to blow out the warm air b for circulation without passing through the heat exchanger 12 particularly during the heating operation. .

On the other hand, the first and second air passages 10a,
Reference numeral 10b denotes a parabolic scroll plate 31a, 32a which is separated from the air suction port 5 through the upper portion thereof in the direction of the air outlets 9, 9 and smoothly makes a U-turn, and is integrated with each other to form a scroll. It is formed between the plates 31a, 32a and the opposing tongue-side casings 31b, 32b, respectively, and is formed by the first and second air passages 10a, 10b in the fore-and-aft direction branching portion (the air inlet 5). A heat exchanger 12 having a flat plate structure is provided on the upper side), with one end side (front end side) being low, the other end side (rear end side) being high, and being inclined as shown in the figure.

The one end of the heat exchanger 12 is supported via a drain pan 29 on the decorative panel 4.
The other end forms a predetermined bypass passage 39 with the air suction port of the second cross flow fan 30B.

The bypass passage 39 is provided with an opening / closing damper 70 as a passage opening / closing means for opening / closing the bypass passage 39. Open / close damper 70
During the cooling operation, as shown in FIG. 11, the bypass passage 39 is brought into contact with the suction port side lower edge 32c of the second cross flow fan 30B to close the bypass passage 39, while as shown in FIG. Open the bypass passage 39 and
The warm air b near the ceiling that bypasses the heat exchanger 12 flows to the side of the cross flow fan 30B.

Therefore, in the case of this configuration, first, during the cooling operation, the first and second cross-flow fans 30A and 30B, which are the first blowing means for blowing out the original temperature-regulated air, pass through the heat exchanger 12. Temperature-controlled air (cool air) is horizontally blown out from both front and rear air outlets 9, 9 and gradually descends by natural convection, thereby realizing a comfortable cooling air-conditioning environment for the user.

On the other hand, during the heating operation, temperature-regulated air (warm air) is blown from the front air outlet 9 through the heat exchanger 12 by the front first cross flow fan 30A as the first blowing means. On the other hand, the second cross-flow fan 30B serves as a second blowing means, and the second cross-flow fan 30B for circulation, which is the second blowing means, causes the bypass passage 39 and the second Warm air b staying in the vicinity of the ceiling 3 is blown out from the rear air outlet 9 through the air passage 10b, and is blown out by the warm air b near the ceiling, which has been cooled to a certain degree. Appropriate and effective circulation of the indoor air from the rear air outlet 9 is performed, and the temperature in the vertical direction of the indoor space without causing the user to feel a draft. La is effectively eliminated.

(Eighth Embodiment) Next, FIGS.
Shows the configuration of an embedded ceiling air conditioner that is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 8 of the present invention.

This embodiment adopts the same concept as that of the above-described seventh embodiment in the four-way blowing type of the above-mentioned first embodiment, and the original temperature control ventilation passage 10 is The heat exchanger 12 is formed not in a U-shape but in an annular shape corresponding to each of the four air outlets 9, 9, 9, 9 at least in the cooling operation. Each air outlet 9, 9, 9,
9, while in the heating operation, the passage between the cross flow fan 20, which is the second ventilation means for circulation, and the heat exchanger 12 in the ventilation passage 10 is the first passage. The upper and lower two sets of opening / closing dampers 61a and 61b are closed and closed to form an inverted U-shaped ventilation passage (corresponding to 9c in FIG. 3) for circulation, which is the same as in the first embodiment. It is characterized by realizing a similar circulation function.

However, in the case of the configuration of the present embodiment, since the original ventilation passage 10 for temperature control is also used as the ventilation passage for circulation, the U-turn guide 17 of the construction of the first embodiment has a crossflow. It becomes a scroll portion 19a of the fan 20, and the partition plate 18 is a partition plate 41 having a tongue portion 19b of the cross flow fan 20 integrated therewith.
It has become.

Then, as described above, the air passage 10
Opening / closing means are first and second two sets of opening / closing dampers 61a,
As shown in FIG. 13, for example, as shown in FIG.
When a and 61b are opened, both the air inlet 9a and the air outlet 9b at the time of circulation become the outlet of the cool air a whose temperature is controlled via the heat exchanger 12, and effectively act.

(Embodiment 9) Next, FIGS.
15 shows a configuration of an embedded ceiling air conditioner that is an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 8 of the present invention.

In this embodiment, when the same functions as those of the above-described eighth embodiment are realized, the above-mentioned ventilation passage opening / closing dampers 61a and 61b are replaced by a single circular plate-shaped opening / closing damper (flap). 62 and the opening / closing damper 62
Is supported on the scroll part 17a side via a support shaft 62a,
As shown in FIG. 14, only the circulation air b is blown out by closing and closing the ventilation passage 10, and the air-mixed air (a + b) in which the temperature-controlled air a and the circulation air b are mixed and the temperature is slightly increased as shown in FIG. 15. ) Blowout condition,
It is possible to easily realize three air blowing states of only the temperature-controlled air a as shown in FIG.

(Embodiment 10) FIG. 17 shows a configuration of a ceiling-mounted air conditioner as an example of a ceiling-mounted air conditioner having a circulation function according to Embodiment 10 of the present invention. Is shown.

In this embodiment, the same circulation structure as that of the first embodiment described above is applied not to the ceiling-embedded bottom-surface outlet but to the ceiling-hanging-type side outlet. It is characterized by the following.

In the case of this configuration, as shown in the figure, the air outlet 9 for the temperature control air a is provided on the four side surfaces of the main body casing 2.
Since there are 9, 9, 9, the air inlet 9a for circulation and the air outlet 9b can be freely formed on the lower surface side portion.

Therefore, the height of the U-turn guide 45b made of an arc plate is set low as shown in the figure, and it is provided with a function as a scroll portion of the cross flow fan 20, which is the second blowing means for circulation, and When the tongue portion 17b is integrally provided on the upper portion of the plate 41, all of the original temperature control air outlets 9, 9, 9, 9 are maintained as the temperature control air a outlets as in the first embodiment. A circulation device can be provided.

Therefore, it is possible to install a circulating device below each of the four air outlets 9, 9, 9, if necessary.

Reference numeral 45a denotes an airflow guide for the air outlet 9.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a ceiling-mounted air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a bottom view of the air conditioner.

FIG. 3 is a sectional view of a main part of the air conditioner.

FIG. 4 is a perspective view showing a schematic configuration of a ceiling-mounted air conditioner according to Embodiment 2 of the present invention.

FIG. 5 is a bottom view of the air conditioner.

FIG. 6 is a cross-sectional view showing a configuration of a main part of a ceiling-mounted air conditioner according to Embodiment 3 of the present invention.

FIG. 7 is a cross-sectional view illustrating a configuration of a main part of a ceiling-mounted air conditioner according to Embodiment 4 of the present invention.

FIG. 8 is a cross-sectional view showing a configuration of a main part of a ceiling-mounted air conditioner according to Embodiment 5 of the present invention.

FIG. 9 is a cross-sectional view illustrating a configuration of a ceiling-mounted air conditioner according to Embodiment 6 of the present invention.

FIG. 10 is a cross-sectional view showing a configuration of a ceiling-mounted air conditioner according to Embodiment 7 of the present invention during a heating operation.

FIG. 11 is a cross-sectional view showing a configuration of the air conditioner during a cooling operation.

FIG. 12 is a cross-sectional view showing a configuration of a main part of a ceiling-mounted air conditioner according to Embodiment 8 of the present invention during a heating operation.

FIG. 13 is a cross-sectional view showing a configuration of a main part during a cooling operation of the air conditioner.

FIG. 14 is a cross-sectional view showing a configuration of a main part during a heating operation of a ceiling-mounted air conditioner according to Embodiment 9 of the present invention.

FIG. 15 is a cross-sectional view showing a configuration of a main part in an emix state during a cooling operation of the air conditioner.

FIG. 16 is a cross-sectional view showing a configuration of a main part during a cooling operation of the air conditioner.

FIG. 17 is a cross-sectional view showing a configuration of a main part of a ceiling-mounted air conditioner according to Embodiment 10 of the present invention during a heating operation.

FIG. 18 is a cross-sectional view illustrating a configuration of a ceiling-mounted air conditioner according to a conventional example during a heating operation.

FIG. 19 is a bottom view of the air conditioner.

[Explanation of symbols]

1 is an air conditioner, 2 is a main body casing, 3 is a ceiling, 5 is an air inlet for temperature control air, 9 is an air outlet for temperature control air, 9a is an air inlet for circulation air, 9
b is an air outlet for circulation air, 10, 1
Reference numerals 0a and 10b denote temperature control air blowing passages, 11 denotes a centrifugal fan, 12 denotes a heat exchanger, 20 denotes a cross flow fan, 22
Is a propeller fan, 24 is a centripetal fan, 30, 30A,
30B is a cross flow fan, and 61a, 61b and 70 are opening / closing dampers.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Sumio Shioji 1304 Kanaokacho, Sakai City, Osaka Daikin Industries, Ltd. Sakai Seisakusho Kanaoka Factory F-term (reference) 3L049 BA03 BB01 BC01 BD01 3L060 AA05 DD07

Claims (7)

[Claims] An air blowing means (1) for blowing out the original temperature-regulated air through a heat exchanger (12) in an air conditioner body (2).
In addition to 1) and (30), in a heating operation, a ventilation means for circulation which sucks warm air staying in the vicinity of the ceiling (3) without passing through the heat exchanger (12) and blows the air downward ( 20) A ceiling-mounted air conditioner characterized in that the temperature difference in the vertical direction of the room is eliminated without providing a draft to the user by providing (22) and (24). 2. A second air blowing means (20), (22), (24) for blowing air for circulation is provided through an air inlet (5) through an air outlet (5) via a heat exchanger (12). It is provided in a circulation ventilation passage (9c) extending from an air inlet (9a) provided separately from a temperature adjustment ventilation passage (10) reaching 9) to an air outlet (9b). The ceiling-mounted air conditioner according to claim 1, wherein: 3. A second air blowing means (20), (22), (24) for blowing air for circulation, from an air inlet (5) through a heat exchanger (12). The ceiling-mounted air conditioner according to claim 1, wherein the air conditioner is provided in a temperature control ventilation passage (10). 4. A second blowing means (20), (22),
(24) is provided on the downstream side of the heat exchanger (12), and at the time of circulation, the ventilation passage (10) with the heat exchanger (12) is provided with passage opening / closing means (61a), (61b).
4. The ceiling-mounted air conditioner according to claim 3, wherein the air conditioner is closed and shut off by the air conditioner. 5. The cooling device according to claim 1, wherein the second ventilation means (20), (22), (24) for circulation is kept stopped during the cooling operation. , 2, 3 or 4, the ceiling-mounted air conditioner. 6. A plurality of air outlets (9), (9) communicating with a common air inlet (5) of the air conditioner main body (2) in the air conditioner main body (2). A plurality of corresponding air blowing means (30A) and (30B) are provided. During the cooling operation, each of the air blowing means (30A) and (30B) separates the temperature-controlled air through the heat exchanger (12) into the above-mentioned air. While the air is blown out from the air outlets (9) and (9), during the heating operation, the heat exchange is performed from one of the plurality of air outlets (9) corresponding to one of the plurality of blowing means (30A) and (30B). The temperature-controlled air passing through the vessel (12) is blown out, and the warm air remaining in the vicinity of the ceiling (3) is blown out from the corresponding other side air outlet (9) by the other blowing means (30B) and (30A). A ceiling-mounted air conditioner characterized in that: 7. The switching of the air blowing state between the cooling operation and the heating operation is performed by the passage opening / closing means (70) provided in the bypass passage (39) of the heat exchanger (12). The ceiling-mounted air conditioner according to claim 6, wherein the air conditioner is opened and closed.