JPH10122587A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make optimum a stream of indoor air and realize a comfortable thermal environment by forming a ceiling adhering jet where a stream of cold air or warm air blown from an air conditioning indoor machine installed on a window upper wall of an indoor window side wall flows so as to creep horizontally along a ceiling face up to a side wall located oppositely to a window side. SOLUTION: Cold air or warm air blown in from an outlet of an indoor machine 1 installed on an upper part of an indoor window side wall horizontally along a ceiling face 21 mildly lowers in the vicinity of a wall face 22 located oppositely to a window side after passage through the ceiling face 21, and then forms a flow which is reversed at a lower portion in a room and returns to a window face 7 side. Air mildly circulated in the room is sucked from a gap 13 wider than a window width below a curtain or a roll blind 6 without becoming a strong air stream directly striking a human body in the room, and rises between the curtain or roll blind 6 and the window face 7 and is refluxed to the indoor machine 1 through a curtain box 5 having a function as a return air chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having excellent comfort for a human body living in a building room.

[0002]

2. Description of the Related Art In recent years, houses having high airtightness and high heat insulation have been developed in Japan, and heating and heating with low energy have been carried out.
Cooling is becoming possible. Currently, the most popular air conditioning system is an air conditioning system whose main purpose is to control the sensible heat of air.It blows out air at a high speed to keep the temperature inside the room uniform. Discomfort is a problem. In addition, it is frequently pointed out that non-uniform air temperature in places where air currents cannot reach, cold drafts due to cooling of window surfaces in winter, uncomfortable temperature differences between upper and lower rooms, and formation of warm air due to solar radiation in summer, etc. It is.

An air-conditioning technology for eliminating the distribution of indoor airflow and temperature, which is a problem of the air-conditioning technology, has been sought in recent years. And various indoor airflow control technologies have been proposed. Radiation air-conditioning technology using ceilings and floors is free from the problem of discomfort because it uses far-infrared rays (electromagnetic waves) that travel between the wall and the human body as media instead of using air as a medium. The problem is that it takes a long time to set an appropriate thermal environment at the time of starting to flow water or air, and that the construction cost under the ceiling and under the floor is large.

As a technique for controlling an indoor airflow so that a strong airflow does not hit a person, a sensor detects a position of a person and controls the airflow blown from an air conditioner so as not to hit the person. Technology (Mitsubishi Electric Technical Report Vo
l.68, No.5 (1994), p45) and a technology that forms a jet attached to the ceiling so as to crawl along the ceiling avoiding the lower part of the room where people are present, and allows air to flow out from the outlet and the lower part of the opposite side wall (air conditioning)・
Proceedings of the Sanitary Engineering Society Academic Lecture Meeting (1991), p369). The former technology of the sensor system is effective in a narrow space near an air conditioner, but has a problem that an effective effect cannot be obtained when the room is large or when there are many people.

FIG. 8 shows the problem of the latter technique of the jet flow method attached to the ceiling.
And based on FIG. In the ceiling-attached jet system shown in FIG. 8, the regulated air is blown in a direction parallel to the ceiling surface 21 from the outlet 3 of the indoor unit installed on the wall opposite to the window surface 7, and the curtain installed on the window wall side. Alternatively, the air is recirculated from the bottom of the roll blind 6 to the ceiling through the space between the window 7 and the ceiling. In addition, since there is the suction port 4 on the opposite side to the wall surface 22 where the indoor unit with the blowout is installed,
During heating, the floor surface 20 near the indoor unit installation wall becomes insufficiently heated. In particular, since the convection to the living area is very weak, there is a problem that the vertical temperature difference (temperature difference between the feet and the head) in the living room becomes large.

In the ceiling-attached jet system shown in FIG. 9, the outlet 3 and the inlet 4 are installed on the same wall surface 22. Therefore, when the installation surface 22 is opposite to the window surface 7, the window in winter Cold draft due to surface cooling poses a problem, and it is difficult to control the temperature and flow rate comfortably throughout the room. FIG.
In the ceiling attached jet method shown in FIG. 0, the outlet 3 is disposed on the ceiling surface 21 on the window side, and the inlet 4 is provided slightly below the outlet 3. In this case, the construction cost can be reduced because it can be configured with a general-purpose wall-mounted air conditioner of the package, but as can be seen from the air flow shown, the flow of the regulated air is poor near the window, and large temperature unevenness may occur in the room. Can be easily guessed.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide an economical air-conditioning system capable of realizing a comfortable thermal environment by optimizing the flow of indoor air. .

[0008]

According to the present invention, the flow of cold air or hot air blown from an air-conditioning indoor unit installed on the window upper wall of the indoor window side wall is such that the side wall opposite to the window side along the ceiling surface. By forming the ceiling-attached jet that crawls horizontally to the horizon, it is possible to prevent unpleasant high-speed air from coming into contact with humans. In addition, a large circulating flow is formed throughout the room by sucking indoor air from under the curtain installed on the indoor window side, thereby reducing the temperature distribution and airflow distribution in the room, and making the entire area of the room a comfortable space.

Although an air-conditioning indoor unit having an outlet for blowing along a ceiling surface is not common, there are some air-conditioning indoor units such as those for offices which draw in from the lower part of the indoor unit and blow it out to the front. The outlet of this type of air-conditioning indoor unit does not have a structure in which the jet flows positively along the ceiling, but if the outlet is shaped like a slot and the indoor unit is installed near the ceiling, the jet adhering to the ceiling can be removed. realizable. Even in the case of an indoor unit of a wall-mounted general-purpose air conditioner having a suction port at an upper part and an outlet at a lower part, a jet attached to a ceiling can be similarly realized by combining a cross fan.

Here, the reason why the adjusted air blown out in parallel to the ceiling surface adheres to the ceiling surface and flows is based on the fact that the jet air adheres to the ceiling surface better due to the Coanda attachment effect. In the case of blowing out warm air during heating, the Coanda-attached jet is lighter than the room air and reaches the facing wall without falling into the room. However, when the flow rate (m ³ / h) per unit floor area (m ² ) is 30 m / h or less, the blown warm air stays in the upper part of the room, and the difference between the upper and lower temperatures in the room is controlled to be small. Is difficult. If the blowout flow rate is higher than this, the blowout airflow forms a large circulating flow along the inner circumference of the room, and is returned to the indoor unit through the suction port near the floor below the window. For this reason, it is possible to reduce the difference between the upper and lower temperatures in the room, and realize energy-saving comfortable heating that does not require an excessive energy load for raising the temperature in the lower part of the room, which is a living area. In the case of blowing out heavy air during cooling, if the blowing speed is set to 3 m / s or more, in a room having a depth of about 5 m, a flow can be formed that adheres to the ceiling surface and reaches the facing wall.

Here, in order to increase the flow velocity without changing the flow rate, it is effective to reduce the height of the blowout slot. In addition, if the width of the outlet is widened and a two-dimensional slot is used, the adhesion to the ceiling surface is improved by the Coanda effect, the inertia force of the jet is maintained far away, and even heavy air during cooling may be in the middle of the room. It becomes difficult to peel off. In particular, the width of the blow-out slot is set to 4 times the width of the wall on which the window is installed.
If it is more than a certain value, the ceiling surface can be widely cooled and heated by the blown cold and hot air. This is due to the fact that the wider slot makes the jet jet more adherent, and that the adhering flow to the ceiling surface covers an area sufficient to cool or heat the ceiling surface That's why. Thereby, in addition to the cooling and heating effect by convection, the effect of radiation cooling and heating using the ceiling surface can be expected.

In the conventional radiation cooling and heating using a ceiling surface,
There was a problem that the structure required a radiant panel having a complicated structure on the ceiling surface, and the construction cost was high.However, in the air conditioning system of the present invention, the ceiling surface can be cooled and heated by airflow from the indoor side, so the structure of the ceiling surface is It becomes simple and can realize comfortable radiant air conditioning without increasing the cost. In particular, when the width of the blowout slot is 40% or more of the width of the wall on which the window is installed, most of the ceiling surface can be cooled and heated, so that the effect is further enhanced. Here, the air blown into the room is, of course, subjected to sensible heat adjustment (cooling or heating), but if necessary, latent heat adjustment (especially summer dehumidification) is also effective.

[0013] Also, conditioned air blown from the indoor unit,
The mixed air of the indoor air is uniformly sucked in from the gap under the window under the window or the window under the roll blind and the width is equal to the width of the window installation wall, and is returned to the indoor unit through the window. This allows the indoor unit to draw in warm air due to solar radiation in summer and cool air due to window cooling in winter without taking in the room. In addition, by combining with the ceiling surface attached jet blowing from the window side,
A gentle circulation flow along the inner circumference of the entire room can be formed, and the entire area of the room can be made to have a uniform flow velocity temperature. In order to recirculate the air passing between the curtain or the roll blind and the window surface to the indoor unit without leakage, it is effective to use a curtain box having a return chamber function.

As shown in FIG. 6, the curtain box 5 has a slot-shaped suction port 14 between the curtain 6 and the window surface 7 for uniformly sucking the return air from under the curtain in the width direction of the window. A mechanism (e.g., a discharge port of a curtain box and an indoor unit) for connecting the air outlet 15 to the air inlet 4 of the indoor unit 1 without leaking air. (A mechanism to directly connect the air intake ports of the above) or to connect them by a duct.

As described above, the system that combines the jet flow adhering to the ceiling surface from the window installation wall surface and the suction system near the floor surface below the curtain using the curtain box as a return chamber, makes a large gentle circulating flow around the inner circumference of the room. Is formed, and it becomes possible to control the entire room to a comfortable space with a sense of airflow and a small temperature difference. With the conventional convection air-conditioning system, in which a large circulation flow is not formed in the room, the warm air stays in the upper part of the room and the cool air stays in the lower part of the room, so a high energy load is required to control the indoor living area to a comfortable temperature and airflow. Needed. In addition, it was unpleasant because cold or warm air hit the person in the living room directly, or the temperature difference between the feet and the head increased. However, in the air-conditioning system of the present invention, since the temperature difference in the room can be reduced by forming a large gentle circulation flow, efficient energy-saving air-conditioning can be realized, and the flow along the ceiling surface can be realized by forming the flow along the ceiling surface. By using a curtain box with a return chamber function, it is not possible to directly introduce humans into the room without using direct wind, and also using a curtain box with a return chamber function to prevent the cold draft in the winter from unpleasant windows and the sunshine in the summer. .
In particular, if the slot-shaped outlet is made wider, it is possible to heat and cool most of the ceiling surface by the outlet airflow,
Radiation air conditioning can be realized by an inexpensive method.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an air conditioner according to the first aspect of the present invention is shown based on FIG. In this air conditioning system,
(B) The indoor unit 1 for generating cold air or hot air by heat exchange with a heat medium circulated and supplied from the outdoor unit 2 and blowing the air indoors with a fan is installed above the window surface 7, and (b) the indoor unit 1
An outlet 3 for blowing cool air or hot air blown along the indoor ceiling surface 21 is installed near the ceiling surface of the indoor unit 1, and (c) rises along the window surface 7 below the indoor unit 1. A curtain box 5 which is wider than the window width and functions as the return chamber which functions as a return chamber for returning the return air to the intake port 4 of the indoor unit 1 and which has the same width as the window installation wall width is provided. The curtain or the roll blind 6 is installed, and (d) the adjusted air from the indoor unit 1 and the mixed air in the room are sucked in from the gap 13 between the lower end of the curtain or the roll blind 6 and the floor surface 20. An air flow path is formed between the air conditioner and the window surface 7, and the air is returned to the intake port 4 of the indoor unit through the curtain box 5 having a return chamber function.

The flow of air in this case will be described with reference to FIG. FIG. 1 is a front view of a window wall on which the indoor unit 1 is installed. The air blown into the room horizontally from the outlet 3 of the indoor unit 1 installed above the indoor window side wall flows along the ceiling surface 21 to form a flow as shown in FIG. The cool air or hot air blown along the ceiling surface 21 passes through the ceiling surface 21, gently descends near the wall surface 22 opposite to the window side, and forms a flow that reverses the lower part of the room, Come back to the 7 side. The air gently circulating in the room does not become a strong airflow that directly hits the human body in the room, and the curtain or roll blind 6
It is sucked through the gap 13 wider than the lower window width, rises between the curtain or the roll blind 6 and the window surface 7,
The air is returned to the indoor unit 1 through the curtain box 5 having a function as a return air chamber.

The suction of the mixture of the conditioned air and the indoor air from the indoor unit 1 through the curtain or the space behind the roll blind 6 by the indoor unit 1 is performed as in the conventional air conditioning system shown in FIG. When air is directly sucked into the indoor unit without passing between the window and the curtain or roll blind, the warm air blown from the indoor unit rises in the room during heating, forming a gentle and large circulation flow in the room. In addition, the return air flows between the curtain or roll blind and the window surface, so that the cool air due to the cooling of the window surface in the winter or the warm air due to the solar radiation in the summer does not directly enter the room. This is because the air can be sucked by the indoor unit.

Here, in order to suck indoor air from the gap 13 below the curtain or the roll blind 6, the curtain or the roll blind must be made of a material that does not allow air to flow therethrough. When using a curtain,
Normal thick or tight fabrics are fine, but commonly used lace curtains are unsuitable. In order to prevent the curtain or the roll blind 6 from sticking to the window surface 7 due to the suction by the indoor unit 1, it is also effective to attach a weight to the lower portion of the curtain or the roll blind 6 as necessary.

In order to uniformly return air between the floor surface 20 and the curtain or the roll blind 6, a curtain box 5 having a return chamber function is required.
Changing the thickness of the slot-shaped outlet 15 in the width direction as necessary, or installing a partition plate in the outlet 15 to change the effective area of the slot-shaped outlet 15 in the width direction. Is valid. During the air conditioning in the room, it is necessary to recirculate the air between the window surface 7 and the curtain or the roll blind 6. Therefore, a curtain or a roll blind made of a transparent material (for example, made of vinyl) which is hard to flow the air is installed on the window side. It is effective to install a normal curtain 25 that can be freely opened and closed on the indoor side while the air conditioner is always kept closed during air conditioning.

In order to return the air sucked through the space between the window surface 7 and the curtain 6 into the curtain box 5 having the return chamber function to the indoor unit 1 without leakage, FIG.
As shown in (1), it is necessary to connect the outlet 15 of the curtain box 5 and the inlet 4 of the indoor unit 1 directly or by using a duct. In the case of the air conditioning system shown in FIG. 1, the air that has passed through the space behind the curtain 6 is sucked into the curtain box 5 from the suction port 14, and then connected to the intake port 4 of the indoor unit 1 via the duct 18. It is returned to the indoor unit 1 through 15.

A general-purpose wall-mounted room air conditioner (air conditioner having an intake port 4 at the upper part and an outlet 3 at the lower part) is used to show the configuration of the air conditioner according to the second embodiment of the present invention with reference to FIGS. . In this air conditioning system, (a) the outdoor unit 2
An indoor unit 17 of a wall-mounted general-purpose room air conditioner that generates cool air or hot air by heat exchange with a heat medium supplied from the circulation and blows the air through a fan, and sucks return air from above.
Is installed above the window surface 7, and (b) a slit 1 is provided at the upper portion to allow return air rising along the window surface 7 to flow toward the indoor unit.
The curtain box 5 wider than the window width having the window 5 is installed at the lower part of the indoor unit 17, and (c) the entire indoor unit 17 is covered to guide the return air from the slit 15 to the indoor unit 17. The conditioned air from the indoor unit 17 and the cover 19 in contact with the
Between the indoor unit intake port 4 and the outlet port 3 so as not to enter
And a return chamber 10 comprising a partition 16 provided on the front surface of the outlet 3 and the (d) slit 1
The cross fan 9 that sucks a part of the return air from the air conditioner 5 and the conditioned air from the indoor unit 17 and blows the indoor air along the ceiling surface 21 is installed.

General-purpose wall-mounted air conditioner (top suction
When using the lower fan and the cross fan 9, the cross fan 9 serving as the outlet may be installed anywhere in the upper front part, the upper part, and the upper side of the indoor unit 1 of the room air conditioner as long as the cross fan 9 can be installed near the ceiling surface. By using the cross fan 9, even a general-purpose air conditioner can form a flow along the ceiling surface 21, and also form a Coanda-adhering flow that reaches the opposing wall surface 22 without cooling air flowing into the room even during cooling. Therefore, a sufficient flow rate can be secured. Also in this case, it is effective to adjust the width of the outlet.

The flow of air in this case will be described with reference to FIG. FIG. 3 is a front view of the window wall surface on which the indoor unit 17 is installed. The air that has uniformly risen between the curtain 6 and the window surface 7 is sucked into the curtain box 5, and is led to the upper part where the indoor unit 17 is located through the slit 15 provided at the upper part. In order for the return air of the curtain box 5 to be eventually led to the cross fan 9,
The indoor unit 17 of the air conditioner is covered with a cover 19 in contact with the curtain box 5. Air outlet 3 of indoor unit 17
A partition 16 is provided so that air from the air conditioner does not directly enter the intake port 4 of the indoor unit. Here, the partition 16 is provided only between the outlet 3 and the air inlet 4 and on the front surface of the outlet 3, and has no partition at the end. Therefore, of the return air from the slit 15 of the curtain box 5, the return air at the end is directly
Since the return air in the center is obstructed by the partition 16, the return air is divided into right and left and enters the intake port 4 from the side face between the intake port 4 and the partition 16 on the front face of the intake port. Further, a part of the return air from the curtain box 5 is mixed with the conditioned air from the indoor unit 17 and is blown out directly along the ceiling surface 21 by the cross fan 9 without passing through the indoor unit 17. As described above, even in the general-purpose wall-mounted air conditioner having the upper suction and the lower blowing, the flow along the ceiling surface is formed by providing the return chamber 10 and the cross fan 9 each having a simple structure including the cover 19 and the partition 16. it can. In addition, by returning the return air that does not pass through the indoor unit 17 to the ceiling surface, a flow rate sufficient to form a flow of Coanda adhesion can be secured.

FIG. 7 shows a configuration of an air conditioner according to a third embodiment of the present invention using a general-purpose wall-mounted room air conditioner (air conditioner having an intake port 4 at an upper portion and an outlet 3 at a lower portion). In this air conditioning system, (a) an indoor unit of a wall-mounted general-purpose room air conditioner that generates cold air or hot air by heat exchange with a heat medium circulated and supplied from the outdoor unit 2, sends the air by a fan, and sucks return air from above. 17 to the window surface 7
A curtain box 5 wider than the window width having a slit 15 at the upper part is installed at the lower part of the indoor unit 17 in order to allow return air rising along the window surface 7 to flow to the indoor unit side. (C) In order to guide all the return air from the slit 15 to the indoor unit 17, a cover 19 that covers the indoor unit 17 and is in contact with the curtain box 5 is installed.
A duct 23 for sucking only air from the outlet 3 of the indoor unit 17 is installed, and (e) the air in the duct 23 is sucked.
The cross fan 9 that blows out indoors along the ceiling surface 21 is installed.

General-purpose wall-mounted air conditioner (top suction
When using the lower fan and the cross fan 9, the cross fan 9 serving as the outlet may be installed anywhere in the upper front part, the upper part, and the upper side of the indoor unit 1 of the room air conditioner as long as the cross fan 9 can be installed near the ceiling surface. By using the cross fan 9, even a general-purpose air conditioner can form a flow along the ceiling surface 21, and also form a Coanda-adhering flow that reaches the opposing wall surface 22 without cooling air flowing into the room even during cooling. Therefore, a sufficient flow rate can be secured. Also in this case, it is effective to adjust the width of the outlet.

The air conditioner indoor unit 17 is a curtain box 5
The cover 19 is in contact with the cover 19. Also, the indoor unit 17
A partition 24 is provided so that air from the outlet 3 of the air conditioner does not directly enter the air inlet 4 of the indoor unit 17. The partition 24 is provided not only at the portion where the outlet 3 exists but also at the end as shown in FIG.
A duct 23 is formed by the cover 19 and the partition 24 so that the air from the curtain box 5 and the air from the outlet 3 of the indoor unit 17 are not mixed. Therefore, all of the return air from the curtain box 5 is sucked into the intake port 4 of the indoor unit 17 and the indoor unit 1
All the air that has flowed out of the outlet 3 adjusted in 7 is sucked by the cross fan 9 and blown out along the ceiling surface 21.

[0028]

Example An example of heating by the air conditioner shown in FIG. 1 of the present invention is shown in Table 1 together with a comparative example. In the preliminary experiment, the outlet velocity was set to 3.5 m /
With the setting of sec, a heating experiment (case 2) using the air conditioner of the present invention was performed. As a comparative example, an experiment (Case 1) was conducted in which a general-purpose room air conditioner (upper suction / lower blowing) was set.

[Table 1] Hereinafter, heating of the ceiling attached jet system was performed under the operating conditions shown in Table 1. From the obtained experimental results, a comparative example (Case 1)
Then, the warm air blown from the indoor unit stayed in the upper part of the room without descending into the room, and the temperature difference between the feet and the head became large. In addition, a cold draft generated by cooling the window surface was observed on the floor near the window surface. On the other hand, in the device of the present invention (Case 2), the jet adhering to the ceiling passes through the ceiling surface,
It was found that the temperature was gradually lowered down the wall opposite to the window and was supplied to the center of the room, so that the vertical temperature difference in the room was small and the cold draft from the window was reduced.

In the air conditioner of the present invention, by adjusting the angle of the air outlet, the air flow is directed directly toward the human body at the start of air conditioning or during cooling when a person exercises vigorously outside and enters the room. It is also possible to promote convective cooling. In addition, when the curtain or roll blind is open, the air outlet can be directed vertically downward to reduce the cold draft from the window surface and create a flow that heats the floor surface mildly. is there. Further, in the case of the air conditioner of claim 2 using a general-purpose air-conditioning indoor unit and a cross fan, the angle of the blown airflow is changed by installing the airflow guide plate 11 on the ceiling surface near the outlet of the crossfan 9. be able to.

In the case of cooling using the air conditioner of the present invention, the adjusted air blown horizontally to the ceiling surface reaches the opposing wall without falling into the room by adjusting the blowing flow rate, and gently spreads the opposing wall. After the descent, a large circulating flow was formed in the room, passed between the curtain or the roll blind and the floor surface, passed between the curtain or the roll blind and the window surface, and returned to the indoor unit. In the air conditioner of the present invention, a comfortable indoor environment with less airflow is obtained, since a cold wind such as that generated by a general-purpose room air conditioner (upper suction, lower blowout) does not directly hit a room person. The air conditioner of the present invention controls the entire room to reduce the temperature difference, eliminates cold air or hot air that directly hits the human body,
This achieves comfortable air conditioning without discomfort.

[0031]

The indoor temperature and humidity environment obtained under the proper operating conditions of the air conditioner of the present invention configured as described above is extremely favorable for the human body, such as the draft of the blowing jet and the indoor thermal environment. From the problem of non-uniformity. A new air-conditioning system that meets the climate of Japan different from Europe and the United States can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a building to which an air conditioning system according to an embodiment of the present invention is applied, and shows a flow of air when a window surface is viewed from a front side by a broken arrow. .

FIG. 2 is a schematic cross-sectional view taken along line AA of FIG. 1, in which the flow of air is indicated by solid arrows.

FIG. 3 is a schematic front view of a building to which the air conditioning system according to the embodiment of the present invention is applied, in which the flow of air when a window surface is viewed from the front side is indicated by a broken arrow. .

FIG. 4 is a cross-sectional view taken along the line BB of FIG. 3, in which the flow of air is indicated by solid arrows.

FIG. 5 is a cross-sectional view taken along the line CC of FIG. 3, in which the flow of air is indicated by solid arrows.

FIG. 6 is a schematic perspective view of a curtain box having a return chamber function according to the embodiment of the present invention.

FIG. 7 is a schematic longitudinal sectional view corresponding to a sectional view taken along line CC of FIG. 3 of a building to which the air conditioning system according to the embodiment of the present invention is applied; Is shown.

FIG. 8 is a schematic diagram showing the flow of air in a conventional air conditioning system.

FIG. 9 is a schematic diagram showing the flow of air in another conventional air conditioning system.

FIG. 10 is a schematic diagram showing the flow of air in still another conventional air conditioning system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Air-conditioning indoor unit 2 Air-conditioning outdoor unit 3 Indoor unit outlet 4 Inlet of indoor unit 5 Curtain box with return chamber function 6 Curtain or roll blind 7 Window surface 8 Refrigerant pipe and drain pipe 9 Cross fan 10 Return chamber 11 Air flow Guide plate 12 Ceiling attached jet 13 Gap between curtain or roll blind and floor 14 Suction port of curtain box 15 Slit of curtain box 16 Partition 17 Indoor unit of wall-mounted general-purpose room air conditioner 18 Duct 19 Cover 20 Floor surface 21 Ceiling surface 22 Wall facing the window surface 23 Duct 24 Partition 25 Ordinary curtain

Claims (4)

[Claims] In an air conditioning system, an outdoor unit for supplying a heat medium to an indoor unit; a curtain or a roll blind made of a material through which air hardly flows; a curtain or a roll blind suspended from the curtain or a roll blind; A curtain box 5 having a return chamber function for guiding air to the indoor unit 1 from between the window surface 7 and the curtain or the roll blind 6 through a gap 13 between the roll blind 6 and the floor surface 20; and return air from the curtain box 5 An air conditioning system comprising: an indoor unit 1 having an intake port 4 for sucking air and an outlet port 3 for blowing conditioning air in parallel to a ceiling surface. 2. An indoor unit 17 of a wall-mounted general-purpose room air conditioner (air conditioner having an intake port 4 at an upper part of an indoor unit and a blow-out port 3 at a lower part) in an air conditioning system; and an outdoor unit for supplying a heat medium to the indoor unit 17. 2; a curtain or a roll blind 6 made of a material through which air hardly flows; and a window 7 and a curtain or a roll suspended from the curtain or the roll blind 6 through a gap 13 between the curtain or the roll blind 6 and the floor 20. A curtain box 5 wider than a window width having a slit 15 at an upper part for flowing return air from between the blinds 6 to the indoor unit side;
In order to guide the return air from the slit 15 to the indoor unit 17, the cover 19 that covers the entire indoor unit 17 and is in contact with the upper end of the curtain box 5, and the conditioned air from the indoor unit 17 directly enters the intake port 4 of the indoor unit 17. A return chamber 10 comprising a partition 16 provided between the indoor unit intake port 4 and the outlet 3 and in front of the outlet 3 so as not to
A cross fan 9 that sucks a part of the return air from the slit 15 of the curtain box 5 and the conditioned air from the indoor unit 17 between the partition 16 in the return chamber and the cover 19 and blows out the air in a direction parallel to the ceiling surface 21. And an air conditioning system comprising: 3. An indoor unit 17 of a wall-mounted general-purpose room air conditioner (air conditioner having an intake port 4 at an upper portion of an indoor unit and a blowout port 3 at a lower portion) in an air conditioning system; and an outdoor unit for supplying a heat medium to the indoor unit 17 2; a curtain or a roll blind 6 made of a material through which air hardly flows; and a window 7 and a curtain or a roll suspended from the curtain or the roll blind 6 through a gap 13 between the curtain or the roll blind 6 and the floor 20. A curtain box 5 wider than a window width having a slit 15 at an upper part for flowing return air from between the blinds 6 to the indoor unit side;
A cover 19 that covers the entire indoor unit 17 and contacts the curtain box 5 so as to guide all the return air from the slit 15 to the indoor unit 17; a duct 23 that sucks all the air from the outlet 3 of the indoor unit 17; An air conditioning system comprising: a ceiling surface 21; and a cross fan 9 that blows out air in a direction parallel to the ceiling surface 21. 4. An indoor unit (17) that blows out parallel to the ceiling (21).
4. The air conditioning system according to claim 1, wherein the width of the air outlet 3 or the air outlet of the cross fan 9 is 40% or more of the width of the side wall of the room. 5.