JPH0579658A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent the increase of room cooling and heating load, contrive energy saving and increase the amount of ventilation by a method wherein circulating air is cooled or heated by effecting heat exchange with other heat medium at the outside of a room, and introduced atmosphere is also cooled or heated by the other heat medium to supply it into the room through a garret. CONSTITUTION:Heat exchange between atmosphere OA introduced through a filter 16 and one part of return air RA sucked through another filter 17 by an air discharging fan 13 is effected through a ventilating heat exchanger 14. Then, the atmosphere OA is introduced into a second heat exchanger 31 while being sucked by an atmosphere intaking fan 30 together with the one part of the return air RA to heat or cool it and, thereafter, is supplied into a room 1 through an air passage 19 in a ceiling while heating or cooling a space 34 in the ceiling 5. The balance of the return air RA is heated or cooled through a first heat exchanger 28 so as to provide it with a predetermined temperature and outlet it into the room 1 through an air outlet port 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner capable of energy saving and healthy air conditioning by applying outside air introduced for ventilation to radiant cooling and heating.

[0002]

2. Description of the Related Art Conventionally, the outside air generally introduced for ventilation is either the outside air as it is, or after heat exchange with a ventilation heat exchanger such as a total heat exchanger, mixed with the circulating air of a cooling and heating device or outside air. It was supplied indoors from a dedicated supply port.
FIG. 8 is a diagram showing a schematic configuration of a conventional air conditioner of this type. In the figure, reference numeral 1 denotes an air-conditioned room, which is formed by an inner wall 2 facing a corridor and the like, an outer wall 4 provided with windows 3 and a ceiling 5 and the like. Reference numeral 6 denotes an outlet provided in a part of the inner wall 2 for discharging return air RA from the inside of the chamber 1 to the outside.

Reference numeral 7 denotes an air outlet arranged on the ceiling 5 and having a built-in air volume adjusting damper 8. The supply air SA from the air conditioner body, which will be described later, is introduced through the air passage 9 and the damper 8 adjusts the air volume. Then, it blows out into the room 1. Reference numeral 10 denotes an air conditioner main body, which circulates air in the order of the exhaust port 6, the ventilation passage 11, the ventilation passage 9, the air outlet 7 and the chamber 1 and also serves as a circulation blower 12 which also serves to introduce the outside air OA, and the circulation blower 12. Blower 1
A blower 13 for discharge that discharges a part of the return air RA discharged from the discharge port 6 by 2 as outdoor air EA
And the exhaust air EA released to the outside by the exhaust blower 13 and the outside air OA introduced by the circulation blower 12.
Ventilation heat exchanger 14 for exchanging heat with each other, and mixed air of outside air OA heat-exchanged by ventilation ventilation heat exchanger 14 and return air RA discharged from discharge port 6 with another heat medium such as chlorofluorocarbon. A heat exchanger 15 for cooling or heating by exchanging heat with a filter 16 provided at the inlet of the outside air OA
And a filter 1 provided at the intake of the return air RA
7 and.

Next, the operation of the conventional air conditioner configured as described above will be described. First, a part of the return air RA discharged from the room to the ventilation passage 11 by the circulation blower 12 through the discharge port 6 passes through the ventilation heat exchanger 14 by the discharge blower 13 and is discharged to the outside as waste air EA. To be done. On the other hand, the remaining return air RA becomes together with the outside air OA that has been heat-exchanged with the waste air EA by the ventilation heat exchanger 14, and is cooled or heated by the heat exchanger 15 for predetermined cooling or heating.

Then, the circulation blower 12 sends the supply air SA to the ventilation passage 9, the air volume of each damper 8 is adjusted, and the air is blown into the room through each air outlet 7 to cool or heat the room. After that, the air whose temperature has risen or fallen due to dirt in the room is discharged from the discharge port 6 into the ventilation passage 11 as return air RA, and the same operation as described above is repeated again to perform air conditioning in the room.

[0006]

Since the conventional air conditioner is constructed as described above, the cooling and heating load is 100.
% Must be covered by forced convection air conditioning. Even when normal ventilation is performed, the heat load due to ventilation reaches about 50% of the total heating and cooling load. Therefore, if the ventilation volume is increased in order to prevent excessive coldness or excessive warmth, which is not good for health, the total load is significantly increased and a large equipment capacity is required, which is a problem against energy saving.

The present invention has been made in order to solve the above problems, and it is not necessary to increase the cooling and heating load so much even if the ventilation volume is increased for health, and it is possible to improve the energy saving. It is an object of the present invention to provide an air conditioner capable of

[0008]

In the air conditioner according to the present invention, the outside air introduced is heat-exchanged with another heat medium to be cooled or heated, and once introduced into the space above the ceiling or below the floor, the air is then introduced into the room. It is something that is supplied.

[0009]

The outside air introduced into the underfloor or underfloor of the air conditioner according to the present invention cools or heats the underfloor or the underfloor, and a certain amount of base load for cooling and heating is covered by the ceiling radiation or the underfloor radiation.

[0010]

【Example】

Example 1. Embodiments of the present invention will be described below with reference to the drawings. 1 is a diagram showing a schematic configuration of an air conditioner according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a configuration of a ceiling space behind the air conditioner in FIG. In each figure, a chamber 1, an inner wall 2, a window 3, an outer wall 4, a ceiling 5, an outlet 6, an outlet 7, a damper 8, an air passage 9, an air passage 11, an exhaust blower 1
3, the ventilation heat exchanger 14, the filter 16 and the filter 17 are the same as those of the conventional device in FIG.

Reference numeral 18 denotes a ceiling back plate which is arranged on the underside of the ceiling with a predetermined distance from the ceiling 5 and forms an air passage 19 in the ceiling together with the ceiling 5. Reference numerals 20 and 21 denote bolts and suspension fittings for suspending the ceiling backing plate 18, 22 is a heat insulating member attached to the ceiling ventilation passage 19 side of the ceiling backing plate 18, and 23 and 24 are bolts and suspensions for suspending the ceiling 5. Metal fittings, 25 is a ceiling ventilation passage 1
At the supply outlet for supplying the air in 9 by blowing it out into the room,
The ceiling 5 is formed by selecting an appropriate position so that the blown air flows along the window.

Reference numeral 26 is the main body of the air conditioner, which is the same as the conventional device such as the exhaust blower 13, the ventilation heat exchanger 14, the filters 16 and 17, and the return air RA exhausted from the room through the exhaust port 6. The blower 27 for circulation that supplies the air as the supply air SA to the outlet 7 via 19 and circulates the air indoors and outdoors, and the return air RA discharged from the outlet 6 by the blower 27 for heat exchange with other heat medium. The first heat exchanger 28 for cooling or heating, and a part of the return air RA is branched on the upstream side of the first heat exchanger 28,
The outside air OA heat-exchanged by the ventilation heat exchanger 14 is combined with the outside air OA and is supplied as the supply air SA into the ceiling ventilation passage 19 through the ventilation passage 29, and the outside air intake is supplied to the room through the supply outlet 25. Blower 30 and the outside air O introduced by this outside air intake blower 30 and part of the return air RA
The second heat exchanger 31 cools or heats the air together with A by exchanging heat with another heat medium.

Next, the operation of the air conditioner of the first embodiment constructed as described above will be described. First, the outside air OA purified by the filter 16 is heat-exchanged by the ventilation heat exchanger 14 with a part of the return air RA from the room which is purified by the filter 17 and drawn by the exhaust blower 13, and the outside air intake blower 30. It is guided to the second heat exchanger 31 together with a part of the return air RA drawn by. And a part of this return air RA is in the second heat exchanger 31,
The surface temperature of the ceiling 5 in the room is adjusted within the range of 20 to 24 ° C. during cooling, and within the range of 30 to 35 ° C. during heating, so that the amount of heat exchange is adjusted and the inside of the ceiling is passed through the ventilation passage 29. After being guided to the ventilation passage 19 and maintaining the ceiling 5 at a predetermined temperature, the air is supplied from the supply outlet 25 into the room. In addition, in the ceiling ventilation path 19, the heat insulating member 22
Therefore, there is no movement to the ceiling back plate 18 side, and most of the heat is used for cooling or heating the ceiling 5.

Now, if the indoor cooling load or heating load increases, and the indoor temperature rises above the range of 20 to 24 ° C. during cooling and below the range of 30 to 35 ° C. during heating,
The circulation blower 27 starts operating, and the first heat exchanger 28 is operated according to the temperature of the return air RA discharged from the room.
The heat exchange capacity of the air is adjusted, the return air RA becomes the supply air SA having a temperature necessary to compensate for the temperature increase or decrease accompanying the increase in the load, the air volume is adjusted by the damper 8 through the ventilation passage 9, and the blowout port 7 The air becomes cold or hot air and is blown out into the room. Thus, according to the embodiment (1), the base load is covered by the radiant cooling and heating from the ceiling 5, and the fluctuation of the load is covered by the convection cooling and heating. Therefore, even if the temperature in the chamber 1 is higher by 2 to 3 ° C. than when air conditioning is performed only by convection, the cooling effect of the same operating temperature is obtained, and even if the temperature is lower by 2 to 3 ° C., the heating effect of the same operating temperature is obtained.

The outside air O introduced into the ventilation passage 19 in the ceiling
Since part of the return air RA is mixed in A,
The amount of air passing through the air passage 19 in the ceiling increases, the wind speed increases, and the cooling or heating action of the ceiling 5 is promoted, so that the radiation cooling / heating effect can be further increased. further,
The interior of the ceiling has a double structure including the ceiling 5 and the ceiling back plate 18, and an in-ceiling ventilation passage 19 is formed between the ceiling 5 and the ceiling back plate 18, and the ceiling back plate 18 is provided on the side of the in-ceiling ventilation passage 19 side. Heat insulating member 22
Since the above is attached, heat leakage to the ceiling backing plate 18 side is prevented without cooling or heating extra air inside the ceiling, and the ceiling 5 can be efficiently cooled or heated at a sufficient wind speed. .. Furthermore, since the outside air OA after being cooled or heated on the ceiling 5 is blown down from the supply outlet 25 along the window 3, the perimeter zone having a large load is drafted by the person in the room 1 by draft. It is possible to achieve the original purpose of supplying fresh outside air OA into the chamber 1 while air-conditioning without causing discomfort.

Example 2. In the first embodiment described above, the case where the ceiling 5 and the ceiling backing plate 18 forming the double structure are suspended by separate bolts 23 and 20 and suspension fittings 24 and 21, respectively, has been described. like,
If the clog-shaped heat insulating member 32 is formed, its base 32a is attached to the ceiling backing plate 18, and the ceiling 5 is attached to the tips of the teeth 32b, the grooves formed between the teeth 32b. Becomes the ventilation passage 19 in the ceiling. Therefore, the bolt 23 and the hanging metal fitting 24 in FIG. 2 can be omitted, and since the ceiling 5 only needs to be attached, the assembly work can be facilitated and the inexpensive device can be provided. Leakage is completely eliminated.

Embodiment 3. Further, in the above-mentioned Example 1,
The case where a part of the return air RA is mixed with the outside air OA that is heat-exchanged in the second heat exchanger 31 and is guided to the in-ceiling air passage 19 has been described. Even if it is configured so as to lead to the above, it is possible to sufficiently exert the effect in terms of performing radiant cooling and heating.

Example 4. 4 is a diagram showing a schematic configuration of an air conditioning apparatus in Embodiment 4 of the present invention, and FIG. 5 is a sectional view showing a configuration under the floor of the air conditioning apparatus in FIG. In the figure, the same parts as those of the first embodiment shown in FIG. Reference numerals 33 and 34 denote room-side floor plates and under-floor floor plates that are arranged on the floor of the room 1 with a predetermined space therebetween, and 35 is a clog-shaped heat insulating member that is arranged between the floor plates 33 and 34. In-floor ventilation passage 3 in cooperation with the side floor plate 33
6 is formed. Reference numeral 37 is an air passage for guiding the supply air SA from the outside air intake blower 30 into the in-floor air passage 36, and 38.
Is a steel frame that supports and fixes the underfloor floor plate 34, and 39 is a supply air outlet that connects the in-floor ventilation passage 36 and the inside of the chamber 1.

Next, the operation of the air conditioner of the fourth embodiment constructed as described above will be explained. First, the outside air OA purified by the filter 16 is heat-exchanged by the ventilation heat exchanger 14 with a part of the return air RA from the room which is purified by the filter 17 and drawn by the exhaust blower 13, and the outside air intake blower 30. It is guided to the second heat exchanger 31 together with a part of the return air RA drawn by. And a part of this return air RA is in the second heat exchanger 31,
The surface temperature of the ceiling 5 in the room is controlled within the range of 20 to 24 ° C. during cooling and within the range of 30 to 35 ° C. during heating so that the amount of heat exchange is adjusted and the floor space is passed through the ventilation passage 37. Guided to the air passage 36, the floor plate 33 on the room side
Is maintained at a predetermined temperature, and then is supplied into the room through the supply outlet 39. In addition, in the floor ventilation passage 36, the heat insulating member 3
5, the heat does not move to the floor side floor plate 34 side, and most of the heat is used for cooling or heating the room side floor plate 33.

Now, if the indoor cooling load or heating load increases, and the indoor temperature rises above the range of 20 to 24 ° C. during cooling and below the range of 30 to 35 ° C. during heating,
The circulation blower 27 starts operating, and the first heat exchanger 28 is operated according to the temperature of the return air RA discharged from the room.
The heat exchange capacity of the air is adjusted, the return air RA becomes the supply air SA having a temperature necessary to compensate for the temperature increase or decrease accompanying the increase in the load, the air volume is adjusted by the damper 8 through the ventilation passage 9, and the blowout port 7 The air becomes cold or hot air and is blown out into the room. As described above, according to the fourth embodiment, the base load is covered by the radiant cooling and heating from the room-side floor plate 33, and the load variation is covered by the convection cooling and heating. Therefore, even if the temperature in the room 1 is higher by 2 to 3 ° C. than in the case of air conditioning using only convection, the cooling effect of the equivalent operating temperature is obtained, and even if the temperature is 2 to 3 ° C. lower, the heating effect of the equivalent operating temperature is obtained.

Further, the outside air OA introduced into the ventilation passage 36 in the floor
Since a part of the return air RA is mixed in the air, the amount of passing air in the in-floor ventilation passage 36 increases and the wind speed rises, and the cooling or heating effect of the room side floor plate 33 is promoted. Can be increased. further,
Since the underfloor has a double structure of the room side floor plate 33 and the underfloor side floor plate 34, and the in-floor ventilation passage 36 is formed by the heat insulating member 35 between these floor plates 33, 34, the underfloor floor plate 34 Heat leakage to the room is also prevented, and the room side floorboard 3 at a sufficient wind speed.
3 can be efficiently cooled or heated. Furthermore, the outside air OA after being used for cooling or heating the room side floor plate 33 is blown up along the window 3 from the supply outlet 39, so that the perimeter zone having a large load is
It is possible to achieve the original purpose of supplying new outside air OA into the room 1 after air-conditioning without giving the person in the room 1 the discomfort caused by the draft.

Embodiment 5. FIG. 6 is a diagram showing a schematic configuration of an air conditioner in Embodiment 5 of the present invention, FIG. 7 (A),
6B is a cross-sectional view and a front view showing the configuration of the ceiling portion of the air conditioner in FIG. 6, respectively. In the figure, parts similar to those of the conventional device shown in FIG. Reference numeral 40 denotes an illumination unit embedded in the ceiling 5, which is configured as shown in FIG. That is, 41
Is a reflection plate having a U-shaped cross section, which reflects the light of the illumination 42 toward the room 1, and 43 is formed so as to cover the opening of the reflection plate 41 and transmits the light reflected by the reflection plate 41. A transmission plate that leads to the chamber 1 side, 44 is an air outlet formed in the transmission plate 43 to communicate the interior of the lighting unit 40 with the chamber 1, and 45 is a damper 8 that communicates the ventilation passage 9 with the interior of the illumination unit 40. A duct, 46 is a heat insulating member attached to the back surface of the reflection plate 41, 47 is an inspection port that penetrates the central portion of the lighting unit 40, and connects the back of the ceiling and the room 1, and is a lid plate that can be opened and closed. It is blocked. The lighting unit 40 is 1/4 (1.5 m × 1.5) of a normal building module (3 m × 3 m).
m) is formed.

Next, the operation of the air conditioner according to the fifth embodiment of the present invention constructed as above will be described. First, a part of the return air RA discharged from the room to the ventilation passage 11 by the circulation blower 12 through the discharge port 6 passes through the ventilation heat exchanger 14 by the discharge blower 13 and is discharged to the outside as waste air EA. To be done. On the other hand, the remaining return air RA becomes together with the outside air OA that has been heat-exchanged with the waste air EA by the ventilation heat exchanger 14, and is cooled or heated by the heat exchanger 15 for predetermined cooling or heating.

Then, the circulation blower 12 sends the supply air SA to the ventilation passage 9, the air volume is adjusted by the dampers 8, and the air is blown out into the lighting unit 40 through the duct 45, which is indicated by an arrow in FIG. 7A. While circulating the light in the lighting unit 40, the transmission plate 43 is kept in the range of 20 to 24 ° C. during cooling and 30 to 30 ° C. during heating.
After cooling or heating in the range of 35 ° C. respectively, the air is blown into the chamber 1 from the air outlet 44 to cool or heat the inside of the chamber. After that, the air whose temperature has risen or fallen due to dirt in the room is discharged from the discharge port 6 into the ventilation passage 11 as return air RA, and the same operation as described above is repeated again to perform air conditioning in the room.

According to the fifth embodiment described above, the supply air SA whose air volume is adjusted by the damper 8 through the ventilation passage is
Once introduced into the lighting unit 40 via the duct 45,
Since the transparent plate 43 is cooled or heated and then supplied into the chamber 1, the base load is the ceiling 5 as in the first embodiment.
Radiant cooling and heating from the transparent plate 43 of FIG. Therefore, even if the temperature in the room 1 is slightly higher than that in the case of air conditioning using only convection, the cooling effect at the equivalent operating temperature can be obtained, and even if it is slightly lower, the heating effect at the equivalent operating temperature can be obtained. Further, since the air outlet 44 formed in the transmission plate 43 of the lighting unit 40 has a larger air outlet area than the air outlet 7 of the conventional device shown in FIG. 8, noise due to air blow is also reduced. Further, since the inspection port 47 is provided at the central portion of the lighting unit 40, it is possible to exhibit practically excellent effects such as improved workability during construction.

[0026]

As described above, according to the present invention, the introduced outside air is cooled or heated by exchanging heat with another heat medium, and once introduced into the ceiling or floor of the room, it is supplied to the room. Therefore, even if the ventilation amount is increased for health, it is not necessary to increase the cooling and heating load so much, and it is possible to provide the air conditioner capable of improving energy saving.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the configuration of the ceiling above the air conditioner in FIG.

[Fig. 3] Fig. 3 is a cross-sectional view showing the structure of the ceiling above the air conditioner in Embodiment 2 of the present invention.

FIG. 4 is a diagram showing a schematic configuration of an air conditioning apparatus in Embodiment 4 of the present invention.

5 is a cross-sectional view showing an underfloor configuration of the air conditioner in FIG.

FIG. 6 is a diagram showing a schematic configuration of an air conditioner in a fifth embodiment of the present invention.

7A and 7B respectively show a configuration of a ceiling portion of the air conditioner in FIG. 6, where FIG. 7A is a sectional view and FIG. 7B is a front view.

FIG. 8 is a diagram showing a schematic configuration of a conventional air conditioner.

[Explanation of symbols]

 1 Room 3 Window 5 Ceiling 6 Exhaust port 7,44 Air outlet 19 Intra-ceiling ventilation passages 22, 32, 35, 46 Heat insulating member 25, 39 Supply air outlet 28 First heat exchanger 31 Second heat exchanger 32a Table part 32b Teeth part 33 Room side floor plate 36 In-floor ventilation path 40 Lighting unit 43 Transmission plate 47 Inspection port

Claims (8)

[Claims] 1. A first heat exchange for cooling or heating the circulating air, which is once discharged from the room to the outside and then returned to the room and circulated in the room and the outside, by exchanging heat with another heat medium outside the room. And a second heat exchanger that cools or heats the introduced outside air by exchanging heat with another heat medium, and the outside air heat-exchanged by the second heat exchanger is provided in the ceiling of the room. An air conditioner characterized by being led to the back once and then being supplied into the room. 2. The air conditioner according to claim 1, wherein a part of the circulating air is mixed with the outside air that is heat-exchanged with the second heat exchanger. 3. The air outlet is formed so that the air, which is once guided to the back of the ceiling and then supplied to the room, flows along the window on the outer wall side of the room. 2. The air conditioner according to any one of 2. 4. The ceiling has a double structure, and the space formed between the ceilings has an outside air heat-exchanged by a second heat exchanger or an air mixture of the outside air and a part of the circulating air. 3. The method according to claim 1, wherein either one is guided.
Alternatively, the air conditioner according to claim 2. 5. A clog-shaped heat insulating member is inserted between both ceilings so that the tips of the clogged tooth portions are in contact with the indoor side ceiling, and are formed by the tooth portions and the indoor side ceiling. 5. The air conditioner according to claim 4, wherein either the outside air heat-exchanged by the second heat exchanger or the air mixed with the outside air and a part of the circulating air is introduced into the space. apparatus. 6. A first heat exchange for cooling or heating the circulating air, which is once discharged from the room to the outside and then returned to the room and circulated inside and outside the room, by exchanging heat with another heat medium outside the room. And a second heat exchanger that cools or heats the introduced outside air by exchanging heat with another heat medium, and the outside air heat-exchanged by the second heat exchanger is placed under the floor of the room. The air conditioner is characterized in that the air is once introduced into the room and then supplied into the room. 7. A first heat exchange for cooling or heating by circulating heat of the circulating air, which is once discharged from the room to the outside and then returned to the room and circulated in the room and the outside, with another heat medium outside the room. And a lighting unit that is buried in the ceiling and the lighting transmission plate is exposed to the room, and after the circulating air that has been heat-exchanged by the first heat exchanger is once guided into the lighting unit. An air conditioner characterized by being supplied to the room. 8. The air conditioner according to claim 7, wherein an opening / closing inspection opening for partitioning the space above the ceiling from the interior is formed in the center of the lighting unit.