JPH10141689A - Radiation type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent vapor condensation on an outer surface of a radiation panel at the time of cold radiation. SOLUTION: A fan 8 is disposed under a fan chamber 4 of a casing 1. A heat exchanging coil 9 is disposed at an upper side of the fan 8, and cooled air by the coil 9 is fed to a radiation air passage 5. A small amount of the cold air fed to the passage 5 is fed into a room R via an air permeable radiation panel 7, and an outer surface of the panel 7 is covered with an air layer L of the fed cold air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner using the radiant heat of air for air conditioning.

[0002]

2. Description of the Related Art Radiation type air conditioners of this type are conventionally known for heating. In the conventional device, the radiant air passage and the room are partitioned by a radiant panel made of a steel plate, the radiant panel is heated by warm air circulated to the radiant air passage, and the radiant panel is heated from the outer surface of the radiant panel. The room is heated by radiant heat.

[0003]

The above-mentioned conventional radiant air conditioner is excellent in that a more comfortable heating can be obtained by suppressing the airflow in the room, but the following problem arises when it is used for cooling. That is, at the time of cooling, the radiant panel made of steel is cooled by the cool air circulated to the radiating air passage, and the cool heat is radiated from the outer surface of the radiant panel into the room.
When the temperature of the outer surface of the panel becomes lower than the dew point temperature of the room air, a large amount of dew is generated on the outer surface of the panel. For this reason, it was not practical to use the radiation type air conditioner of the conventional structure for cooling. An object of the present invention is to provide a radiation type air conditioner that can be used for cooling.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, for example, as shown in FIG. 1, a radiation type air conditioner is constituted as follows. The radiating air passage 5 and the room R are partitioned by a permeable radiating panel 7, and the air-conditioning air circulated through the radiating air passage 5 passes through the permeable radiating panel 7 and passes through the room. It is configured so that only a small amount can flow out to R.

According to a second aspect of the present invention, the following configuration is added to the configuration of the first aspect. In the casing 1, the radiating air passage 5, the fan 8 and the heat exchange coil 9 are connected in series, and the air outside the casing 1 can be sucked from the suction port 8a of the fan 8.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
It will be explained by. FIG. 1A is a longitudinal sectional view of a floor-mounted fan coil unit (air conditioner). FIG. 1B is an enlarged schematic view of a portion B in FIG. 1A.

In FIG. 1 (A), a symbol R indicates a room,
Reference F indicates a floor, and reference W indicates a wall. The interior of the casing 1 of the fan coil unit is partitioned into a fan chamber 4, a radiation air passage 5, and a suction passage 6 by two partition plates 2 and 3 extending vertically. The suction passage 6 is provided with an air intake formed in the outer wall of the casing 1.
(Not shown) communicates with the room R. The radiating air passage 5 and the room R are defined by a permeable radiating panel 7. Here, the material of the radiation panel 7 is a sintered alloy, but any material having minute air permeability may be used, and other materials such as ceramics and plastics may be used.

A multi-blade fan 8 is disposed below the fan chamber 4, and a heat exchange coil 9 is disposed above the fan 8. Reference numeral 11 denotes a drain pan, and reference numeral 12 denotes a damper. Reference numeral 13 denotes a rectifying punching metal,
Reference numeral 14 denotes an outlet.

The above-mentioned fan coil unit is operated as follows during cold radiation. The damper 12 is set in the radiation posture M.
(Refer to the solid line diagram), and the fan 8 is operated in a state where cold water (or refrigerant) is circulated through the coil 9. Then, the air cooled by passing through the coil 9 is sucked into the suction port 8 a of the fan 8 through the radiating air passage 5, and circulated from the discharge port 8 b of the fan 8 to the coil 9. Note that a part of the air in the room R is generated by the suction path 6.
And a part of the cold air passing through the coil 9 is sucked into the suction port 8a of the fan 8
And a duct (not shown).

The cool air flowing through the radiating air passage 5 cools the radiant panel 7 and radiates cold to the room R. More specifically, as shown in FIG. 1 (B), a part of the cold air flowing through the radiating air passage 5 flows out through the radiating panel 7 into the room R, and a small amount of the cool air flows out. The outer surface of the radiation panel 7 is covered with an air layer L of cold air. For this reason, it is possible to prevent the air in the room R from coming into contact with the outer surface of the radiation panel 7 and to prevent the occurrence of dew condensation on the outer surface of the radiation panel 7. In addition, the outer surface of the radiation panel 7 is sufficiently cooled by the outflowing cold air, so that the radiation capability of cold heat is greatly improved.

During normal cooling, the damper 12
Can be switched from the radiation posture M in the solid line diagram to the normal posture N in the dashed line diagram. Then, the air in the room R flows into the suction passage 6.
, The fan 8, the coil 9, and the air outlet 14 are circulated to the room R in order.

The operation of the fan coil unit at the time of warm radiation is different from that at the time of the cold radiation described above in that warm water (or a heating medium) is circulated through the heat exchange coil 9; The same is true. Then, a part of the warm air flowing through the radiating air passage 5 flows out into the room R through the radiating panel 7 in a small amount, and the outer surface of the radiating panel 7 is sufficiently heated by the warm air flowing out. Therefore, the radiation ability to the room R is greatly improved.

The radiating air passage 5 may be provided separately from the fan coil unit, instead of being arranged integrally with the fan coil unit. Moreover,
Unitizing the radiation air passage and the heat exchange coil,
It is also possible to circulate air conditioning air from a separate fan for the radiation unit. The air conditioner to which the present invention is applied may be a wall-mounted type or a ceiling-embedded type instead of a floor-standing type.

[0014]

According to the first aspect of the present invention, the following effects can be obtained from the configuration and operation described above. At the time of cooling, a part of the cool air flowing through the radiating air passage flows through the permeable radiating panel into the room only in a small amount, and the outer surface of the radiating panel is covered with the air layer of the cool air flowing out. Therefore, it is possible to prevent the indoor air from contacting the outer surface of the radiation panel, and to prevent the occurrence of dew condensation on the outer surface of the radiation panel. Therefore, an air conditioner that can be used for cold radiation can be put to practical use.

In addition, during the above-mentioned cooling, the outer surface of the radiant panel is sufficiently cooled by the outflowing cold air, so that the ability to radiate cold heat indoors is greatly improved.
Similarly, during heating, the outer surface of the radiant panel is sufficiently heated by the outflowing warm air, so that the ability to radiate indoors is greatly improved. As described above, since the radiation capability to the room is greatly improved, it is not necessary to increase the temperature difference between the inside and the outside of the radiation panel while securing the predetermined cooling capability or the heating capability, and the energy for air conditioning can be saved. .

The invention of claim 2 has the following effect in addition to the effect of the invention of claim 1 described above. Since the radiation air passage can be formed using the internal space of the casing, the radiation type air conditioner can be made compact. Moreover,
Cooling air flowing out of the casing through the radiant panel and into the room can be replenished by the air outside the casing that has been drawn in from the fan inlet, eliminating the need for a dedicated air replenishment system. Is simple.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 (A)
1 is a longitudinal sectional view of a fan coil unit to which the present invention is applied. FIG. 1B is an enlarged schematic view of a portion B in FIG. 1A.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Casing, 5 ... Radiation air passage, 7 ... Breathable radiation panel, 8 ... Fan, 8a ... Suction port of fan 8, 9 ...
Heat exchange coil, R: indoor.

Claims (2)

[Claims] 1. A radiating air passage (5) and a room (R) are partitioned by a permeable radiating panel (7), and the air-conditioning air circulated through the radiating air passage (5) is supplied to the radiating air passage (5). A radiation type air conditioner characterized in that only a small amount can flow out into the room (R) through the air permeable radiation panel (7). 2. A radiating air passage (5), a fan (8), and a heat exchange coil (9) are connected in series in a casing (1), and a suction port of the fan (8) is connected. The radiation type air conditioner according to claim 1, wherein the air outside the casing (1) can be sucked in from 8a).