JPH01155129A - Radiation type cooling device - Google Patents

Abstract

PURPOSE:To simplify an entire facility configuration while getting a high radiation cooling effect by a method wherein an electronic freezing element for generating a cold heat through a Peltier effect is arranged such that its cold heat radiating plate is installed so as to cause the generated cold heat to be transmitted to the cold heat radiation plate through a thermal conducting effect. CONSTITUTION:An electronic coolant element 2 is arranged at one surface of a cold heat radiation plate 1 of aluminum. A generated cold heat of the electronic freezing element 2 is directly transmitted to a cold heat radiation plate 1 through a thermal conduction. A plurality of cold heat radiation plates 1 provided with the electronic freezing element 2 are arranged in a side-by-side relation flush with it while the arranged surface of the electronic freezing element 2 being an upper surface. With this arrangement, a ceiling part of the cooling room 3 is formed by a plurality of cold heat radiation plates 1. A cooling operation is carried out by radiating the cold heat from the lower surfaces of these cold heat radiation plates.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radiant cooling device for cooling people, living things, machines, various articles, etc.

[Conventional technology]

Conventionally, in radiant cooling systems, heat radiation pipes for circulating chilled water and condensable refrigerant are installed in parallel on the ceiling of the room to be cooled.
In addition, a radiant panel with a flow path for cold air or cold water formed inside can be installed on the ceiling, or the space on the back side of the ceiling board can be used as a cold air flow path. A cooling effect is provided by radiating cold heat into the room to be cooled, and a cold source device that supplies cold water, cold air, and refrigerant to the heat radiation pipes, radiation panel, and space behind the ceiling is separately installed.

[Problem that the invention seeks to solve]

However, in order to obtain a predetermined cooling effect in radiant cooling, it is necessary to maintain the temperature of the cooling radiating surface at a target cooling temperature that is lower than the ambient temperature. In order to maintain the temperature of the cooling radiation surface at the target cooling temperature, cold water, cold air, and refrigerant at a temperature equal to or lower than the target cooling temperature are continuously supplied to the heat radiation pipes, radiant panels, and ceiling space. Therefore, it is necessary to install a large cooling and heating source equipment separately, and heavy insulation must be provided for the chilled water, cold air, and refrigerant supply lines that extend from the separately installed cooling and heating source equipment. However, there was a problem in that the entire equipment was large-scale both in terms of installation and construction.

An object of the present invention is to provide a radiant cooling device that can obtain a high radiant cooling effect and has a simple overall equipment configuration through a rational equipment configuration using an electronic refrigeration element that utilizes the Peltier effect.

[Means for Solving the Problems] The characteristic configuration of the radiation type cooling device according to the present invention is that an electronic refrigeration element that generates cold heat by the Peltier effect is arranged in such a way that the generated cold heat is transmitted to the cold radiation plate by thermal conduction. The cold radiation plate is attached to the cooling radiation plate, and the cold radiation plate is attached to the cooling device so as to provide a cooling effect to the cooling target area through cold radiation from the surface of the cold radiation plate that is cooled by cold conduction from the electronic refrigeration element. A heat dissipation space is provided on the ceiling or side wall of the target area, and a heat dissipation space facing the heat dissipation section of the electronic refrigeration element is partitioned on the back side of the cold radiation plate, and ventilation for cooling the heat dissipation space is provided for the heat dissipation space. The purpose is to install a ventilation system that circulates gas, and its functions and effects are as follows.

(Function) In other words, the cold radiation plate is entirely cooled by cold conduction from the attached electronic refrigeration element, and due to this cooling, cold heat is radiated from the surface of the cold radiation plate toward the area to be cooled. As a result, a cooling effect is provided to the area to be cooled by the area-wide cold radiation.

On the other hand, the heat generated by the generation of cold heat in the electronic refrigeration element is carried out to the heat radiation space formed on the back side of the cold radiation plate, but ventilation gas for cooling the heat radiation space is passed through the heat radiation space by a ventilation device. Therefore, the amount of heat radiated is transported and discharged from the heat radiating space to the outside of the system by the ventilation.

By discharging that heat sufficiently through forced ventilation, the temperature of the heat radiation space is maintained sufficiently low and the heat radiation efficiency is maintained high, so the cold heat generation efficiency is maintained high and the generated cold heat temperature is also low. Therefore, the cooling effect of the above-described radiant cooling using the electronic refrigeration element as the cooling heat source is maintained at a high level.

〔Effect of the invention〕

In other words, since the electronic refrigeration element attached to the cold radiation plate is used as the cold source, it is not necessary to install a large cold source device separately as in conventional equipment.
In addition, there is no need to extend heavily insulated pipes and ducts from the separate cold/heat source device.

On the other hand, the ventilation gas for cooling the heat radiation space that is ventilated into the heat radiation space is for discharging the heat radiation from the electronic refrigeration element, and is not for directly cooling the cold radiation plate for cold radiation. Therefore, the temperature of the ventilation gas for cooling the heat radiation space needs to be much higher than the target cooling temperature of the cold radiation plate. Gas can also be passed through the ventilation space, and even if the ventilation gas for cooling the heat dissipation space is appropriately cooled to some extent by a cooling device and then ventilated, the necessary cooling device and air passage insulation are only minor.

As a result of the above, although a high radiant cooling effect can be obtained as explained in the operation section, the overall equipment configuration can be made simpler and lighter than before, reducing installation and construction aspects. We have now been able to provide an advantageous radiant cooling device.

〔Example" Next, an example will be explained.

As shown in Figures 1 and 2, an electronic refrigeration element (2) is attached to one surface of an aluminum cold radiation plate (1), and the cold heat generated by the electronic refrigeration element (2) is thermally transferred. 1 directly to the cold radiation plate (1), and in this way, the plurality of cold radiation plates (1) to which the electronic freezing element (2) is attached are placed so that the surface on which the electronic freezing element (2) is attached is the top surface. The cooling radiation plates (1) are arranged flush on the ceiling of the room to be cooled (3), so that the ceiling of the room (3) to be cooled is formed by the plurality of cold radiation plates (1). 1) Cooling is performed by radiating cold heat from the bottom surface.

The electronic refrigeration element (2) generates cold heat with the Peltier effect by passing electricity from one metal to the other metal in a joint of different types and total bending, and as the cold heat is generated, the back of the electronic refrigeration element (2) Side finned heat dissipation part (2a)
Heat is radiated from the

Cold radiation plate (1) due to heat conduction from electronic refrigeration element (2)
The cold heat applied to the cold radiation plate (1) is efficiently conducted throughout the cold radiation plate (1) due to the good thermal conductivity of the cold radiation plate (1) made of aluminum. It is effectively cooled, and as a result, cold heat is radiated from the entire lower surface of the cold radiation plate (1) into the room to be cooled (3), thereby providing a cooling effect.

A heat insulating material (4) is laid on the entire top surface of the cold radiation plate (1), except for the area where the electronic refrigeration element (2) is attached, and the top side of the cold radiation plate (1), which does not contribute to air conditioning, is covered with insulation material (4). This is to prevent heat and cold radiation from escaping.

On the other hand, the back side (
The partition space on the upper surface side, that is, the ceiling space is
There is a heat radiation space (5) overlooking the finned heat radiation part (2a) of each electronic refrigeration element (2), and outside air is taken in from the outside air intake (6) as a ventilation device for the heat radiation space (5). The heat dissipation space (
5) and a heat dissipation space (5).
) through the exhaust duct (9) to the exhaust port (10)
An exhaust fan (11) is provided to exhaust air from the inside to the outside.

In other words, the above-mentioned air supply fan (8) and exhaust fan (11)
By ventilating the outside air into the heat radiation space (5) as ventilation air for cooling the heat radiation space, the amount of heat radiation from the electronic refrigeration element (2) is transported and discharged from the heat radiation space (5) to the outdoors. This is to maintain the cold heat generation efficiency of the refrigeration element (2) at a high level, and to maintain the generated cold heat temperature at a predetermined rated temperature.

The suction side terminal part of the exhaust duct (9) is a heat radiation space (5
) is branched into a plurality of parts, and each of the suction ports (9a) of these terminal parts is opened near the heat radiation part (2a) of each of the electronic refrigeration elements (2), whereby the electronic refrigeration elements (2) The heat radiated warm air around the heat radiating part (2a) is efficiently suctioned and removed in a local exhaust manner.

Additionally, the air supply duct (7) is equipped with a cooler (12) that cools the outside air to a predetermined temperature for several people, so that even when the outside temperature is high, the electronic refrigeration element (2) This is so that the amount of heat radiated can be sufficiently transported and discharged.

In addition, the temperature of the outside air (ventilation gas for cooling the heat radiation space) supplied to the heat radiation space (5) is - For example, while the cooling temperature of the cold radiation plate (1) is 20°C to 22°C, 28°C
Just keep it to a certain level.

[Another example]

Next, another example will be listed.

(a) The ventilation gas for cooling the heat radiation space that is ventilated into the heat radiation space may be simply outside air without cooling.

(0) As shown in Figure 3, the ventilation gas for cooling the heat radiation space is circulated between the heat radiation space (5) and the atmospheric radiator (13), and the ventilation gas for cooling the heat radiation space is circulated in the atmospheric heat radiator (13). It may also be cooled by heat radiation.

(C) As shown in FIG. 4, the exhaust air from the room to be cooled (3) which is being cooled by the air conditioner may be ventilated into the heat radiation space (5) as ventilation gas for cooling the heat radiation space.

5) As shown in FIG. 5, the ventilation gas for cooling the heat radiation space may be sprayed in spots onto the heat radiation portions (2a) of the electronic refrigeration elements (2).

(Published) Instead of making the heat dissipation part of the electronic refrigeration element a simple fin structure, as shown in Figures 6 to 8, the heat input side of the electronic refrigeration element (2) may be brought into contact with the heat dissipation ends of the elements (2). A heat pipe (14), a water jacket (15), or a heat sink (16) is installed to ensure a large heat radiation area. Fined heat dissipation parts (14a), (15a), (16a) of the plate (16)
) may be used to dissipate heat.

(f) The detailed structure of the electronic refrigeration element is not limited to a specific structure, and various types and structures of electronic refrigeration elements can be applied.

(G) The specific attachment structure for attaching the electronic refrigeration element to the cold radiation plate is arbitrary so that the generated cold heat is transmitted to the cold radiation plate by thermal conduction, and the electronic refrigeration element is attached to the cold radiation plate through a thermally conductive intermediate member. may be attached to a cooling radiation plate.

(1) Various improvements can be made to the material and specific shape and structure of the cold radiation plate.

(S) The specific structure of the heat dissipation space formed on the back side of the cold radiation plate can be improved in various ways. Instead of using the ceiling space as the heat dissipation space as in the previous example, it is possible to use a dedicated partition wall. A heat radiation space may be formed or a heat radiation space forming box may be provided.

B) A ventilation system that circulates ventilation gas for cooling the heat radiation space through the heat radiation space can be improved in various ways in terms of the blower configuration, the air path configuration, and the configuration of intervening devices such as coolers.

(+L) The cold radiation plate may be arranged in a vertical position on the side wall of the area to be cooled.

iv) The radiation type cooling device according to the present invention can be applied to cooling various objects such as people, living things, and equipment such as computers.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a perspective view showing the overall equipment configuration, and FIG. 2 being an enlarged sectional view. 3 to 8 respectively show other embodiments of the present invention, FIGS. 3 to 5 are schematic membrane (Jjl configuration diagrams), and FIGS. 6 to 8 are enlarged sectional views. (1) ...Cold radiation plate, (2) ...electronic refrigeration element, (2a) ...heat radiation part, (3).
... Cooling target area, (5) ... Heat radiation space, (12) ... Cooler, (13) ...
Atmospheric radiator.

Claims (1)

[Claims] 1. An electronic refrigeration element that generates cold heat by the Peltier effect (
2) is attached to the cold radiation plate (1) so that the cold heat generated is transferred to the cold radiation plate (1) by thermal conduction, and the cold heat is cooled by the cold conduction from the electronic refrigeration element (2). The cold radiation plate (1) is attached to the ceiling or side wall of the cooling target area (3) so that the cold radiation from the surface of the radiation plate (1) provides a cooling effect to the cooling target area (3). a heat radiation space (5) which is arranged and faces the heat radiation part (2a) of the electronic refrigeration element (2) on the back side of the cold radiation plate (1);
A radiant cooling system in which the heat radiation space (5) is partitioned and provided with a ventilation device that circulates ventilation gas for cooling the heat radiation space. 2. A plurality of the cold radiating plates (1) are arranged in parallel on the same plane, and on the back side of the group of parallelly arranged cold radiating plates (1), the heat radiating space (5) is defined by each cold radiating plate ( 1) The radiation type cooling device according to claim 1, wherein the radiation type cooling device is provided as a common heat radiation space for the heat radiation portions (2a) of each of the electronic refrigeration elements (2) attached to the electronic refrigeration element (2). 3. The radiation type cooling device according to claim 1 or 2, wherein the ventilation device ventilates outside air to the heat radiation space (5) as a ventilation gas for cooling the heat radiation space. 4. The ventilation device supplies the gas cooled by the cooler (12) as ventilation gas for cooling the heat radiation space to the heat radiation space (5).
) Claims 1 or 2 which provide ventilation to the
The radiant cooling device described in section. 5. The radiant air conditioner according to claim 1 or 2, wherein the ventilation device circulates ventilation gas for cooling the heat radiation space across the heat radiation space (5) and the atmospheric radiator (13). Device. 6. The ventilation device uses the exhaust air from the cooling target area (3) as ventilation gas for cooling the heat radiation space (5).
2. The radiant cooling device according to claim 1 or 2, which supplies ventilation to the air conditioner.