JPH0611155A - Ceiling cooling and heating device - Google Patents

Abstract

PURPOSE:To generate an air convection flow, make a comfortable radiation environment and enable air to be dehumidified by a method wherein a heat exchanging part is arranged in the midway of an interior air convection flow passage and an air suction means for sucking interior air from an air suction port is installed in the interior air convection flow passage. CONSTITUTION:A thermal medium circulation passage 3 communicating with a part of a circulation passage 6 of a thermal medium supplying device 5 is installed within a radiation panel 2 mounted at a ceiling. An interior part of the thermal medium circulation passage 3 is cooled by the thermal medium got from the thermal medium supplying device 5 so as to perform a radiation cooling with the radiation panel 2. An interior air convection flow passage 4 having an air suction port 31 opened into an interior side C and an air blowing port 32 is installed in a circulation passage 6 at the upstream side of the thermal medium circulation passage 3. A fan 22 for sucking interior air 2 from the air suction port 31 is arranged within the interior air convection flow passage 4. Air circulating within the interior air convection flow passage 4 is forcedly cooled and dehumidified by a heat exchanging part 11 and circulated and cooled at the interior side C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling heating / cooling system which creates a comfortable environment by radiant cooling or heating with cold / hot water, and more particularly to a technique for using both cooling / heating by ceiling surface radiation and cooling / heating by air convection.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Laid-Open No. 63-49648, cold water is circulated through a cooling coil embedded in a ceiling material to cool the ceiling surface and provide a radiant cooling effect to the indoor environment. Ceiling radiation cooling devices are known. In this air conditioner, by cooling the ceiling surface, dew condensation occurs on the ceiling surface, and for example, in order to solve the problem that the ceiling surface material easily becomes dirty due to moisture absorption, in order to eliminate the problem that cold air accumulated in the room is passed through the dehumidifier, The air is dried to prevent condensation on the ceiling.

[0003]

However, it is not possible to convection the indoor air only with the above-described conventional ceiling surface radiant cooling, so that not only a sufficient cooling feeling or heating feeling can be obtained, but also the indoor However, there is a drawback in that it is not possible to promptly respond to the urgent demand for lowering the temperature or raising the temperature, and the comfort of the radiation environment is impaired. Moreover, in order to absorb moisture during cooling, a dehumidifier is required separately, and it may not be possible to expect a sufficient dehumidifying effect in a wide radiant space.In such a case, keep the ceiling surface above the dew point temperature. However, there is a problem that the surface material of the ceiling cannot be easily soiled.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to generate air convection in a room to make the radiant environment more comfortable, and further, to improve the indoor air. It is an object of the present invention to provide a ceiling cooling and heating device capable of forcibly performing dehumidification to prevent moisture absorption in the ceiling surface material.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a heat medium circulation passage 3 is arranged on the back side of a radiation panel 2 installed on a ceiling, and a heat medium such as cold water or hot water is provided. A part of the circulation path 6 of the heat medium supply device 5 to be supplied constitutes the heat medium circulation passage 3 and the ceiling for supplying the heat medium from the heat medium supply device 5 into the heat medium circulation passage 3 via the circulation passage 6 In the cooling and heating device, the heat exchange part 11 is interposed in the circulation path 6 on the upstream side of the heat medium circulation passage 3, and the air intake port 31 and the air outlet port 32 provided in the radiation panel 2 are provided in the ceiling ceiling D. The indoor air convection passages 4 communicating with each other are installed, the heat exchange section 11 is provided in the middle of the indoor air convection passage 4, and the air for sucking the indoor air a from the air suction port 31 is provided in the indoor air convection passage 4. The suction means 22 is provided.

[0006]

According to the present invention, the circulation path 6 of the heat medium supply device 5
A part of the heat exchange portion 11 is connected to the heat medium circulation passage 3 provided on the back surface side of the radiation panel 2 and is interposed upstream of the heat medium circulation passage 3 of the circulation passage 6 in the water supply direction. Since the heating medium is provided in the middle of the indoor air convection passage 4 provided with the air suction means 22, the heating medium from the heating medium supply device 5 is first supplied to the heat exchange section 11 on the indoor air convection passage 4 side. In particular, during cooling, cold water having a temperature lower than that of the heat medium circulation passage 3 is supplied to the heat exchange portion 11, so that the indoor air a sucked into the indoor air convection passage 4 by the air suction means 22 is forced on the heat exchange portion 11 side. Air that has been sufficiently dried by cooling and dehumidifying
Can be circulated. Thereby, it is possible to prevent dew condensation on the ceiling surface even during cooling. Moreover, since the indoor air a is forcibly circulated between the indoor air convection passage 4 and the indoor side C by the air suction means 22, air convection is generated in the room not only during cooling but also during heating. You can As a result, a sufficient cooling feeling or heating feeling can be obtained by radiant cooling and heating of the ceiling surface, and at the same time, it becomes possible to promptly respond to a request for urgent temperature reduction or temperature increase in the room.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the ceiling cooling and heating apparatus used in the present embodiment has a plurality of radiation panels 2 for performing radiation cooling and heating on the ceiling surface installed on a ceiling material 1 and a ceiling on the back side of the radiation panel 2. The heat medium circulation passage 3 for performing the surface radiation cooling and heating and the indoor air convection passage 4 for forcibly dehumidifying the indoor air a and generating convection are separately arranged, and the heat medium supply device 5 The heat medium is supplied to the heat exchange section 11 of the indoor air convection passage 4 through the circulation path 6 and further supplied into the heat medium circulation passage 3. In this embodiment, a liquid cooling device is used as the heating medium supply device 5, and a mode in which the ceiling surface radiation cooling and the dehumidification of the indoor air a are performed by cold water that is the heating medium supplied from the liquid cooling device 5.

A circulation path 6 of the liquid cooling device 5 (usually referred to as a "chiller") is arranged in the ceiling D, and a coil is provided along the cooling water supply direction A in the middle of the circulation path 6. The unit 11 and the heat medium circulation passage 3 are interposed, and the coil unit 11 on the upstream side in the supply direction acts as a heat exchange portion for cooling the air in the indoor air convection passage 4, and is located downstream of the heat exchange portion 11. The heat medium circulation passage 3 is the radiation panel 2
Acts as a site for radiative cooling. As shown in FIG. 2, in the radiation panel 2, a metal film 1a such as an aluminum material is attached to the foamed ethylene heat insulating material 30 in order to improve the heat radiation to the ceiling material surface, and the heat insulating material 3 is also provided.
One bent pipe 8 that constitutes the fluid circulation passage 3 through which cold and hot water circulates is embedded between zero. This bent pipe 8
A heat insulating material 31 of the same quality as the heat insulating material 30 is attached to the back surface of the heat insulating material 30. Further, as shown in FIG. 3, the radiation panel 2 is disposed between the ceiling material 1 and the field edge receiver 13 and the field edge 14 on the back of the ceiling, and the lower surface of the radiation panel 2 contacts the back surface 1a of the ceiling material 1. As described above, the ceiling material 1 is fixed, and the radiation cooling of the ceiling surface by the radiation panel 2 is efficiently performed. On the other hand, the surface material 1b of the ceiling material 1 is made of, for example, rock wool and paper cloth finish in this embodiment, and is configured to have a low moisture permeability resistance and a high heat insulation performance.

A heat exchanging portion 11 consisting of a coil unit is interposed upstream of the heat medium circulating passage 3 in the circulation passage 6 shown in FIG. 1, and the inside of the heat exchanging portion 11 is arranged on the ceiling back D. The duct 17 forming the indoor air convection passage 4 passes through, and the air in the duct 17 passes through the heat exchange section 11 and is heat-exchanged in the heat exchange section 11. Both ends of the duct 17 are in communication with an intake grill 31 which is an air intake opening opened to the indoor side C and an outlet grill 32 which is an air outlet. A fan 22 is built in the blowout grill 32, and the indoor air a sucked from the blowout grill 32 into the indoor air convection passage 4 is sufficiently cooled and dehumidified by the heat exchange section 11 by the fan 22. From the outlet grill 32 to the indoor side C
In addition to being circulated and supplied to the inside, minute air convection is generated inside the room C. Further, a drain passage 35 for draining the condensed water is provided in the heat exchange section 11, and the condensed water generated when the air in the indoor air convection passage 4 is cooled by the heat exchange section 11 is discharged through the drain passage 35. It can be drained from the outside. In addition, the blowing grill 32
A filter 36, which is an air cleaning means for cleaning the air discharged from the blowout grill 32, is provided inside the filter 3 to remove the air dehumidified by the heat exchange section 11.
It is designed to be cleaned by passing 6 through.

Next, when cooling the room, when the fan 22 in the indoor air convection passage 4 is driven and the cold water is supplied from the liquid cooling device 5, the cold water passes through the heat exchange section 11 and the radiation panel 2 is cooled. Is supplied to the heat medium circulation passage 3. The cold water circulating in the heat medium circulation passage 3 is the ceiling material 1
By directly cooling the aluminum material of the back surface 1a of the above, the radiation cooling of the ceiling surface of the radiation panel 2 is efficiently performed. Also,
The indoor air a sucked into the indoor air convection passage 4 from the suction grill 31 by the fan 22 is forcibly cooled and dehumidified in the heat exchange section 11, and at the same time, the heat exchange section 1
The condensed water generated in No. 1 is drained from the drain passage 35. Then, the dry air sufficiently dehumidified in the heat exchange section 11 is circulated and supplied from the blowout grill 32 to the indoor side C to dehumidify the room.

Here, since the cold water from the liquid cooling device 5 is first supplied to the heat exchange section 11, the cold water having a temperature lower than that of the heat medium circulation passage 3 is supplied, and the cold water in the indoor air convection passage 4 is supplied. The air is sufficiently cooled in this heat exchange section 11.
It becomes possible to dehumidify, and it is possible to more effectively dehumidify the indoor air a. As a result, it is possible to reliably prevent dew condensation from occurring on the ceiling surface as in the conventional case, and prevent the surface material 1b of the ceiling material 1 from being soiled due to moisture absorption. Moreover, since the room air a is forcibly circulated between the room air convection passage 4 and the room side C by the fan 22 in the blowout grill 32, air convection can be generated in the room even during cooling. . As a result, a sufficient cooling feeling due to the radiation cooling of the radiation panel 2 can be obtained, so that it is possible to quickly cope with a sudden low temperature in the room, and the radiation environment becomes more comfortable. In addition, such comfort of the radiant environment can be similarly obtained during radiant heating without dehumidification, and by supplying hot water as a heat medium to the heat exchange section 11 and the heat medium circulation passage 3 in sequence. , The convection of warm air on the indoor side C is generated, and the radiation panel 2
The radiant heating of
Radiant heating can be made more comfortable by quickly responding to the demand for indoor high temperature.

In this embodiment, the indoor air convection passage 4 is also provided.
Since the filter 36 is built in the blow-out grill 31 to clean the air discharged from the blow-out grill 31, the air dehumidified in the heat exchange section 21 is purified and circulated and supplied to the indoor side C. And the radiant environment becomes even more comfortable. Further, the surface material 1b of the ceiling material 1 is made of a material having a low moisture permeability resistance and a high heat insulation performance, such as rock wool and paper cloth finish, so that it can absorb moisture during cooling, Material 1
It is possible to more reliably prevent the surface material 1b from being soiled.

As another embodiment of the present invention, instead of the filter 36, as shown in FIG. 4, an illumination device 50 in which the fan 22 and the blowout grill 32 are integrated is installed in the indoor air convection passage 4. The lighting device 50 may be arranged at the air outlet to cool the lighting device 50 with the air a discharged from the indoor air convection passage 4.

[0014]

As described above, according to the present invention, in the water circulation type ceiling cooling and heating apparatus, the heat exchanging section is provided upstream of the heat medium circulation passage in the circulation path of the heat medium supply apparatus in the water supply direction, and the ceiling ceiling is provided. Is an indoor air convection passage that communicates with the air inlet and the air outlet provided in the radiation panel, and the heat exchange section is provided in the middle of the indoor air convection passage.
Since the indoor air convection passage is configured to include air suction means for sucking indoor air from the air suction port, air convection is generated in the room not only during cooling but also during heating,
Since a sufficient cooling feeling or heating feeling due to the radiant cooling / heating of the ceiling surface can be quickly obtained, the radiant environment can be made more comfortable. Moreover, especially during cooling, cold water having a temperature lower than that of the heat exchange section is supplied to the heat exchange section, so that the indoor air sucked into the indoor air convection passage is sufficiently dehumidified on the heat exchange section side and circulated to the indoor side. Thus, it is possible to prevent the ceiling surface material from being soiled due to moisture absorption.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a ceiling cooling and heating apparatus used in an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an internal structure of the radiation panel of the above.

FIG. 3 is a cross-sectional view showing the installation structure of the radiation panel of the above.

FIG. 4 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Ceiling Material 2 Radiant Panel 3 Heat Medium Circulation Passage 4 Indoor Air Convection Passage 5 Heat Medium Supply Device 6 Circulation Route 11 Heat Exchange Section 22 Air Suction Means 31 Air Suction Ports 32 Air Outlets 36 Air Purification Means D Ceiling Back Room Air

Claims (1)

[Claims] 1. A heat medium circulation passage is arranged on the back side of a radiation panel installed on a ceiling, and a part of the circulation passage of a heat medium supply device for supplying a heat medium such as cold water or hot water is the heat medium circulation passage. A ceiling cooling and heating apparatus configured to supply the heat medium from the heat medium supply device into the heat medium circulation passage through the circulation path, wherein the heat exchange unit is provided in the circulation path upstream of the heat medium circulation passage. Then, indoor air convection passages that communicate with the air inlet and the air outlet provided in the radiation panel are installed in the ceiling, and the heat exchange section is provided in the middle of the indoor air convection passage,
A ceiling cooling and heating apparatus comprising air suction means for sucking indoor air from an air suction port in the indoor air convection passage.