JPS5997436A - Air conditioner utilizing space above window - Google Patents

Abstract

PURPOSE:To enable to condition the air in the perimeter zone and the interior zone by the same air conditioner, by constituting the air conditioner in such a manner that ventilated air and outdoor air are returned to a room after they are heated or cooled by air conditioners scatteringly installed in the ceiling at the window, as well as to treat skin load of the window by an air-flow along the window surface in the inside of a room or by an air-flow flowing between the inter-pane space of the double-glazed window. CONSTITUTION:The air blown off from an air fan unit 26 proceeds to the ceiling 12 along the window surface. The rising air-flow along the window surface is heated or cooled, air-conditioning the heat load on the window surface, at the same time inducing the peripheral air in a room passing through a blind 28. The ventilated air gets into the ceiling from a vent port 30, and is sucked into a fan coil unit 14 from the suction port 20 of a unit 14. The air sucked in such a manner is mixed with the open-air from the open-air duct 18 of a unit 14, and is selectively cooling-conditioned or heating-conditioned in accordance with the heat load in the room, and is supplied to the inside of a room along the surface of the ceiling from the blow-off port 22 of a unit 14 projected from the ceiling 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is designed to easily and economically handle the heat load generated in the indoor perimeter zone and interior zone during cooling and heating operations, and to effectively achieve indoor air conditioning. Conventionally, the central system and the unit system are widely known as air conditioning systems for general buildings regarding air conditioners for buildings, which are characterized by the following.

However, with the central system, it is usually necessary to install a relatively long duct from the air-conditioning machine room installed in one part of the building to the air-conditioned room, which requires a large amount of transport power and requires a large amount of transport power. The heat loss is large and the energy loss is large. In addition, in a unit system in which small air conditioners such as unitary heat pumps and fan coil units are installed distributed in the ceiling, there are Due to the difference in heat load characteristics between the separate areas, that is, the interior zone, an air conditioner for the perimeter zone and an air conditioner for the interior zone are required separately, which not only increases the equipment cost but also causes the air in both zones to and mix with each other, resulting in a mixed loss of heat load. Another method is to install a small air conditioner on the waist wall of the outer wall and blow air directly.

Although this method is economical, it cannot adequately deal with the difference in heat load characteristics between the meter zone and the interior zone when the depth of the room is large, and in addition, the airflow does not reach the depths of the room. The disadvantage is that it cannot be expected to reach a sufficient level, and the indoor thermal environment is unfavorable.

In order to improve the shortcomings of these known air conditioning systems, the present invention aims to reduce costs by simplifying the system while maintaining a good indoor environment, and also to save energy mainly in transportation power. The purpose is to achieve this goal. In order to achieve this objective, the air conditioner of the present invention treats the skin load by airflow along the window surface or between the double-glazed windows in the room, and is installed dispersedly in the ceiling near the window. The air conditioner is configured to cool and heat the return air and outside air before returning it to the room. With this configuration, unlike the unit system, it is possible to treat the perimeter zone and interior zone with the same air conditioner, thus eliminating the need for zoning and allowing the configuration of air conditioners, ducts, and fan units for each span to be changed. When the air conditioner is placed in the perimeter ceiling, the duct only needs to extend straight from the air conditioner to the interior zone, and the duct work for each span is the same, making it standardized. In addition, for example, when an air conditioner is combined with an air source heat pump unit and a fan unit method, there is no need for heat source equipment construction or piping construction, which simplifies the system construction. In addition, in the central system, the fan power accounted for more than % of the air conditioning energy consumption, but in the present invention, the fan power is extremely small due to unitization, and the mixing loss between the indesoazo and perimeter zone is reduced. There is no heat loss in air conditioning or duct piping, and energy consumption for air conditioning is reduced by about 20 to 30% compared to the central system.

Specific examples of the present invention will be described below. Figure 1 shows an example of the present invention installed in the ceiling of an indoor perimeter zone. It is a specific example of an air conditioner showing one embodiment. This air conditioner 10 has a known fan coil unit 14 installed in a ceiling 12.

The fan coil unit is selectively supplied with cold water or hot water as needed from a cold/hot water pipe 16 connected to the outside, and outside air is supplied into the unit 14 from an outside air duct 18 communicating with outside air. Supplied. A known ventilation unit 26 as shown in, for example, Japanese Patent Application Laid-Open No. 55-82240 or No. 57-55336 is arranged on the waist wall of the glass window 24 of the room. A blind 28 is arranged inside the glass window 24, and the lower end of the passage between the glass window 24 and the blind 28 is connected to the air blowing unit 26 through a slit-shaped outlet, and the upper end is connected to a long and narrow return air opening 60.
It communicates with the suction port 20 of the fan coil unit 14 via. Therefore, indoor air is sucked into the unit 26 from the suction port of the blower unit 26 located below the waist wall, and is blown upward from the blower port of the blower unit 26. The air blown out in this way is directed toward the ceiling 12 along the window surface and attracts the ambient air in the room through the blind 28. At the same time, the upward air flow along the window surface simultaneously handles the heat load on the window surface and heats or The cooled air enters the ceiling through the return air port 60 at the same time as the surrounding air, and enters the suction port 20 of the fan coil unit 14.
from there into the unit 14. The air sucked in in this way is transferred to the return air and outside air duct 1 within the unit 14.
8 is mixed with outside air and selectively cooled or heated according to the heat load in the room, and then the air outlet 22 of the unit is connected below the fan coil unit and protrudes from the ceiling 12. Air is preferably supplied into the room along the ceiling surface. The air outlet 22 can also directly supply air to the interior zone by means similar to the air supply duct 60 shown in FIG.

Note that it is known that the heat load shielding rate can be improved by closing the blind 28 while the sunlight is strong.

2 to 4 show a part of the device shown in FIG. 1 that has been improved, and are particularly suitable for a room with a long depth, i.e.,
In this example, an air-cooled heat pump unit 62 is disposed in the ceiling 12 as in FIG. The air-cooled heat pump unit filter 2 that discharges air has a built-in total heat exchanger 66 as shown in Figures 6α and 3b, and is capable of exchanging heat between the outside air 68 and the surplus air 40. When outside air cooling is possible, the air passage switching plate 4 as shown in Fig. 6b is installed.
By the operation 2, it is also possible to introduce a large amount of outside air 38 into the room as supply air 44.

On the waist wall of the glass window, a transmitting unit 26 is installed substantially in the same manner as in FIG. The air is heated and cooled by processing the heat load on the window surface in the same manner as in FIG. During operation, a part of the return air 40 passes through the total heat exchanger filter 6 and then mixes with the outside air 68 for heat source,
It passes through the outdoor coil 52 and the outdoor fan 54 and is discharged 50 outdoors.

Most of the return air 40 passes through the total heat exchanger 66 and mixes with the outside air 687, and then is cooled and heated in the indoor coil 56Vc according to the indoor heat load, and is heated by a humidifier (not shown).
After passing through the indoor fan 58 and the supply air duct, the air is supplied indoors from the air outlet 62.

As shown in FIG. 4, the air supply duct 60 extends from the air outlet or air supply port of the heat pump unit 62 in a substantially perpendicular direction toward the interior of the room to ventilate the entire room.

The blinds are closed when sunlight is strong to improve the heat load shielding rate. FIG. 5 is a diagram similar to FIG. 2 showing yet another embodiment. An air-cooled heat pump unit 64 is installed in the ceiling 12, The outside wall opening 66 takes in and exhausts outside air for the heat source, takes in outside air from inside the room, and exhausts excess indoor air.
A slit-shaped opening 72 is formed at the lower end of the window to connect the space between the double-glazed windows and the indoor space.

The top of the space between the double panes is an open lower 4, which is connected to the lower return air of the air-cooled heat pump unit 64. Furthermore, a blind 78 is installed inside the space, and is closed when sunlight is strong.

Indoor air is introduced into the space between the double-glazed windows through the opening 72 at the bottom of the indoor glass 70, heated and cooled by the heat load on the window surface, and then passed through the opening at the top to the air-cooled heat pump.
It is sucked into the unit 64.

After the return air and the outdoor air are mixed in the air-cooled heat pump unit 64, they are cooled, heated, and preferably humidified according to the heat load in the room, and then sent to a blower connected to the air supply port of the air-cooled heat pump unit 64. It is supplied into the room from the outlet 80.

Figures 6 and 7 are yet another embodiment. In this embodiment, a fan coil unit 82 is installed in the ceiling 12 to take in outside air and exhaust excess air through an outside wall opening 84.

The fan coil unit 82 is selectively supplied with cold water or hot water from the cold/hot water pipe 85 as in FIG.

The window has double glass at 86.88VcL, and the bottom and top of the space between the double glasses are open, and the space in the waist wall and the exhaust inlet 9 of the fan coil ° unit 82 are open.
0. Furthermore, a blind 92 is installed inside the space between the double panes of glass, and is closed when sunlight is strong.

In the waist wall section, a space is created by an outer panel 94 and an inner panel 96, and an opening (wall inlet) 9 between the lower end of the inner panel 96 and the floor surface.
The fan coil unit 82 is configured as shown in FIG. 7, and is capable of discharging air from the exhaust suction port 90 to the outdoors.

In this device, the indoor air sucked into the space in the waist wall from the wall suction port 98 is further led to the space between the double-glazed windows 86 and 88, where it is heated and cooled by the heat load on the window surface. , exhaust suction port 9 of fan coil unit 82
0 into the fan coil unit 82, and is exhausted to the outside through the exhaust port 102 by the exhaust fan 100.

Indoor air sucked in from the return air port 106 provided in the lowered ceiling portion 104 is introduced into the fan coil unit 82 from the return air port 108 of the fan coil unit 82, and is then introduced into the fan coil unit 82 from the outside wall opening 84 through the outside air inlet 110. After passing through the air and mixing with outside air introduced into the fan coil unit 82, it is cooled and heated by the cold/hot water coil 112 according to the heat load, and then humidified by a humidifier (not shown). The air is blown into the room by the air fan 114 through the air supply port 116 and the air outlet 118 . Air outlet 118
is preferably arranged so that it blows toward the opposite side of the window, so that the air blown from the outlet 118 is directly directed to the wall inlet 9.
8 or the return air port 106.

FIGS. 8 and 9 show still another specific example. In this specific example, an empty heat pump unit 120 is installed in the ceiling 12, and draws outside air for heat source through an outer wall opening 122.
Exhaust and remove excess air.

As shown in FIG. 9, the air-cooled heat pump unit 1-120 has an inlet for surplus air 124 and an exhaust fan 126, and supplies surplus air 124 to the upstream or downstream side of the outdoor coil 130 by a switching damper 128. Is possible. The surplus air 124 is supplied to the downstream side of the outdoor coil 130 when the temperature of the surplus air 124 is higher than the salt layer of the outside air 1 and 2 during summer. In other cases, it is supplied upstream of the outdoor coil 160.

The window is double glazed and has substantially the same construction as the embodiment of FIG. The bottom and top of the space between the double panes of glass are open and connected to the space in the waist wall and the surplus air inlet of the air-cooled heat pump unit 120, respectively.

An outside air outlet 166 connected to an outside air duct 164 is provided on the indoor ceiling 12, and the outside air duct 164, which supplies fresh air into the room, is connected to an outside air processing air conditioner (not shown). After the outside air introduced into the building is adjusted in temperature and humidity and purified by the air conditioner,
Air is supplied to each room via an outside air duct 164.

Indoor air sucked into the space in the waist wall through the wall suction port 98 is further guided to the space between the double panes of glass.

After being heated and cooled by the heat load on the window surface, the surplus air 124 of the air-cooled heat pump unit 120 is drawn into the air-cooled heat pump unit 120 through the suction port, and is merged with the outside air 162 for heat source by the exhaust fan 126. The return air 1 provided with the lowered ceiling 104Vc is discharged through the outdoor coil 16o and the outdoor fan 138.
The indoor air sucked in from 06 is introduced into the air-cooled heat pump unit 120 from the return air port 108 of the air-cooled heat pump unit 120, and after being cooled and heated by the indoor coil 140 according to the indoor load, the indoor air is sent to the indoor fan. 142, the air is blown into the room through the air supply port and the air outlet 118. Since the air outlet 118 is provided at 5 to blow toward the opposite side of the window, the blown air is directly blown into the wall air inlet 98 and the return air outlet. It will not be sucked in through the air port 106.

The applicant has disclosed six types of air conditioners here. The first is (1) a blower unit 26 that is installed under the window and blows the drawn indoor air along the window glass, and (2) a flow path for the air from the blower unit between the window glass. (3) a return air port 60 which also serves as a blind box and which is connected to an air conditioner and sucks air from the blower unit and indoor air; (4) a return air port 60 which is connected to the air conditioner and which serves as a blind box and which cools and heats the return air and outside air from the return air port. This air conditioning equipment consists of an in-ceiling air conditioner 14.32 that supplies air into the room, and (5) a ceiling outlet 22.62 that supplies air from the air conditioner into the room (Fig. 1, and Figure 2). The second is (6) a double-glazed window 68.7 with an internal blind and air flow path that guides the indoor air sucked in from the bottom to the air conditioner in the ceiling.
0, (7) an in-ceiling air conditioner similar to that described in (4) above, and (8) a ceiling air outlet similar to that described in (5) above. figure).

The sixth is (9) a double-glazed window 86.88ζ with an internal blind and an air flow path that guides the indoor air sucked in from the bottom to the air conditioner's exhaust inlet in the ceiling; (10) the indoor air is directed to the window. (11) A ceiling return air port 106 that draws air in and guides it to the return air intake port of the air conditioner; 82.120 In-ceiling air conditioner that discharges air to
and (12) ceiling air outlet 11 similar to that described in (1) above.
8 (Figures 6 and 8). However, these do not have a limiting meaning, and each element can be used interchangeably. for example,
It is also possible to arrange the blower unit 26 shown in FIGS. 1 and 2 near the wall inlet of other embodiments, for example with the fan 54 shown in FIGS. 3a, 7, and 9. .58
, 100, 126, and has the effect of significantly increasing ventilation capacity. Furthermore, the air supply duct shown in FIG. 2 can be used in any embodiment as required, thereby increasing the ventilation effect in the interior zone. Also, depending on the structure of the building or its geographical conditions, the air conditioner could be housed within the ceiling of the interior zone. In addition, in Figures 1 and 6, a fan coil unit connected to a hot and cold water pipe is used as an air conditioner.
Although an air heat source heat pump unit is used in FIGS. 2, 5, and 8, if necessary, a water heat source heat pump unit can be used in which the air conditioner is connected to a cooling water pipe to increase heat exchange efficiency. Note that outside air may be introduced through an opening in the outer wall near the air conditioner (for example, as described in Section 2.5.
(Fig. 6), introducing outside air into the building in a concentrated manner away from the air conditioner and then introducing it into the air conditioner through a duct or ceiling (for example, Fig. 1), or using a separate device from the air conditioner. to blow air into the room without going through an air conditioner (for example, Figure 8)
However, these methods can also function in combination with other methods. In all of the above specific examples, the air conditioner is installed in the ceiling and separated from the building's outer wall, but it is also possible to install the air conditioner so that it is integrated with the outer wall of the building. Machine installation is simpler and safer.

This also applies to the blower unit; by pre-caulking the blower unit and installing it so that it is integrated with the outer wall, construction work can be simplified and floor space can be saved. becomes possible. In addition, in order to further reduce the energy consumption of air conditioners,
It is preferable that at least one supply air temperature detection device per unit is located near the boundary between the interior zone and the perimeter zone. For example, in the case of a fan coil unit, this allows air-side coil bypass control.

Control water volume, inlet water temperature, and in the case of heat pump units, compressor ON-OFF control 1
It is possible to control the rotation speed, etc.

In the present invention, in Figures 1 and 2, the indoor return air passage is constituted by an outdoor glass and a blind, while in Figure 5.6.8, it is constituted by an outdoor glass and an indoor glass. The blinds are stored between both glasses.
However, this does not have any limiting meaning; if necessary for the design, indoor glass can be used in the former case, or indoor glass can be replaced with blinds in the latter case. By having the above-described configuration, the present invention can provide the following advantages and technical effects.

(1) In order to eliminate the economic disadvantage of dividing the room into an interior zone and a perimeter zone and using multiple air conditioning units, the interior zone and perimeter zone of the room can be divided into an interior zone and a perimeter zone. A good indoor environment can be obtained in both zones. (2) Since the air conditioner is installed in the ceiling near the window, there is no need for a special air conditioner room like in the central system, and it is also possible to use an air source heat pump air conditioner. When using this, there is no need for any machine room, including a heat source machine room, and the building floor space can be used effectively.

(3) Since the air conditioners are installed separately, they can be operated individually only in the areas where they are needed, reducing energy loss.

(4) There is almost no need for a return air duct, and there may be no supply air duct, or only one at the depth of the room, reducing pressure loss in the duct, significantly reducing fan power and saving energy. (5) ) Duct work is reduced and construction becomes easier.

(6) When using an air-cooled heat pump unit,
It is possible to eliminate the need for piping work and duct work other than drain pipes, resulting in significant labor savings in construction.

(7) If part of the return air to the air conditioner or all of the air that passes through the double-glazed windows is discharged outside the building, the capacity of the heat source equipment can be reduced and the annual load on the equipment can be reduced. .

(8) Cold drafts that occur near windows in winter can be almost completely prevented.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the first embodiment of the present invention, Fig. 2 is a diagram similar to Fig. 1 showing the second embodiment, and Figs. 4 is a schematic plan view of the stable showing the duct in FIG. 2, FIG. 5 is a diagram similar to FIG. 1 showing the sixth embodiment, and FIG. A diagram similar to FIG. 1 showing the fourth embodiment,
Fig. 7 is an enlarged explanatory view of the fan coil unit shown in Fig. 6, Fig. 8 is a view similar to Fig. 1 showing the fifth embodiment, and Fig. 9 is an enlarged explanatory view of the air-cooled heat pump unit shown in Fig. 8. It is a diagram. Explanation of symbols 10: Air conditioner 12: Ceiling 14: Fan coil unit 16: Cold/hot water pipe 18: Outside air duct 20: Suction port 22: Air outlet 24 Ni-glass window 26: Ventilation unit 28 Ni-blind 60: Return air port 62: Air cooling Heat pump unit 34: Outer wall opening 36: Total heat exchanger 68: Outside air 40: Return air 42: Air path switching plate 44.
46: Air supply 48.50: Exhaust 52: Outdoor coil
54: Outdoor side fan 56: Indoor side coil 58: Indoor side fan 60: Supply air duct 62: Air outlet 64: Air cooling heat pump unit 66: Outer wall gap 68.7
0 Ni glass 78 Ni blind 80: Air outlet 82: Fan coil unit 86.88' Ni glass 1oo
: Exhaust fan 106: Return air port 118: Air outlet 12o
: Air-cooled heat pump unit 136: Outside air outlet Patent applicant: Shinryo Corporation (4 others)

Claims (1)

[Claims] (1) An air conditioner is installed in the ceiling of a room, and the air conditioner is forced to draw return air from the room into the ceiling through a ceiling opening provided near the top of a glass window. 1. An air conditioner characterized in that the air conditioner supplies air cooled and heated by the air conditioner into the room according to the heating and cooling load in the room. (2) The air according to claim (1), characterized in that an air supply duct extending toward the interior zone is connected to the air conditioner, and air is supplied into the room from an air supply port provided to the duct. harmonization device. (6) Provide an air supply port that opens into the room in the ceiling below the air conditioner, connect the air supply port and the air supply port of the air conditioner, and connect the air supply port to the interior side of the room through the air supply port provided in the ceiling. An air conditioner according to claim (1), wherein the air conditioner is a fan coil unit connected to cold and hot water pipes. The air conditioner described in (1). (5) The air conditioner according to claim (1), wherein the air conditioner is an air source heat pump unit. (6) The air conditioner according to claim (1), wherein the air conditioner is a water heat source heat pump unit connected to a cooling water pipe. (8) The air conditioner according to claim 1, which introduces outside air into the room through an air conditioner; (9) The outside air is intensively introduced into the building at a place away from the air conditioner, and from there through the duct or inside the ceiling. The air conditioner according to claim (7), wherein the air conditioner is introduced into each air conditioner. (10) Outside air is introduced into the room through the air conditioner after passing through a separate external leg (11) Part or all of the return air from the room is blown into the room through an opening in the outer wall near the air conditioner. (12) The air conditioner includes a heat exchanger that exchanges heat between outside air and exhaust air. The air conditioning system according to claim (7), which has the following features! (14) An air conditioner according to claim No. 1, wherein the exhaust air from inside the room is discharged outside the building after passing through an outdoor heat exchanger.
The air conditioner described in section 5). (15) Install a blower unit on the waist wall of the glass window that has an outlet that sucks indoor air from near the floor and blows it upward along the window glass; Claim 1 (1) having a return air port
). (16) The return air port also serves as a blind box.
An air conditioner according to claim (15). (17) The glass window has a multilayer structure, a blind is installed in the space formed by the indoor glass and the outdoor glass, an opening is provided at the lower end of the space, and indoor air is sucked through the opening, The air conditioner according to claim 1, wherein air flows upward through the space and passes through a return air port provided at the upper end of the space. (18) The glass window has a multi-layer structure, and a blind is installed in the space formed by the indoor glass and the outdoor glass, and an opening is provided at the lower end of the space, and excess indoor air is sucked through the opening. , Claim 1 has an exhaust device in which surplus indoor air flows upward through the space, passes through an opening at the upper end of the space connected to the exhaust side of the air conditioner, and is exhausted to the outside of the building. ). (19) An opening is formed at the lower end of the indoor glass;
The air conditioner according to claim 1 or claim 18. (20) The lower end of the space formed by the indoor glass and the outdoor glass communicates with the space in the waist wall, and The air conditioner according to claim (17) or (18), wherein the wall space has an opening on the indoor side near the floor surface,