Refrigeration – Using electrical or magnetic effect – Thermoelectric; e.g. – peltier effect
Patent
1990-02-05
1991-12-24
Makay, Albert J.
Refrigeration
Using electrical or magnetic effect
Thermoelectric; e.g., peltier effect
454236, F25B 2102
Patent
active
050741160
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a radiation type local air conditioning unit used in the field of air conditioning equipment and of office furniture.
BACKGROUND OF THE INVENTION
Recently, office automation equipment (hereinafter referred to as "OA equipment") has come into common use in most offices. As the number of OA equipment units increases, maldistribution of heat load due to the heat generated by them becomes conspicuous, resulting in some parts of the room being rather warm and the other parts thereof too cold. This maldistribution is hard to eliminate by overall air conditioning, and requires complicated and expensive air conditioning equipment.
The radiation type air conditioners utilizing thermoelectric elements, proposed by Kanichi Kadotani and Tetsuo Onishi (see Japanese Patent Applications No. 62-97606 and 62-160939), are examples of apparatus for locally adjusting room temperature conditions.
FIGS. 1a, 1b and 1c illustrate a partition unit constituting a radiating air conditioner of this type; the partition unit is shown here in a front view, a partially sectional view taken in the direction of the arrow X, and a sectional view taken in the direction of the arrow Y. This partition unit is covered on all sides with panels. The front panel IF has, in the upper section thereof, a cooling plate 2 which is equipped, on its rear side, with a plurality of thermoelectric elements 2a and associated radiation fins 2b. Provided in the middle section of the front panel IF are air inlets 4a, breeze outlets 4b, and a power switch 5. Heat-dissipating-air inlets 3a and a heat-dissipating-air outlet 3b are provided in the middle section of the rear panel 1R and in the upper panel 1U, respectively. Provided in the middle section of the inner space of the partition unit 1 are a crossflow fan 3 for heat-dissipating-air blowing and a crossflow fan 4 for blowing out breeze, which are set in the horizontal position and are spaced apart from each other with respect to a vertical line. A power source controller 6 is provided below these crossflow fans.
When, in this construction, the power source controller 6 is operated by turning on the power switch 5 and electricity is supplied to the thermoelectric elements 2a so as to cause the cooling plate 2 to absorb heat by the Peltier effect, radiation cooling is effected on the front side (the side of the front panel IF) of the partition unit 1. The air 30, which is sucked in through the heat-dissipating-air inlets 3a by the crossflow fan 3 for heat-dissipating-air blowing, flows through an air passage 7 and comes into contact generated by the thermoelectric elements 2a. The air 30 is then discharged, as exhaust 31, to the exterior through the radiation outlet 3b in the upper panel 1U.
On the other hand, the air 40, which is sucked in through the air inlets 4a in the front panel IF by the crossflow fan 4 for blowing out breeze, is blown out, as air 41, through the breeze outlets 4b, thereby effecting convection cooling on the front side (the side of the front panel 1F) of the partition unit 1.
Thus, the radiation cooling by the cooling plate 2 is combined with the convection cooling by the crossflow fan 4 for blowing out breeze, thereby locally providing comfortable coolness.
However, the above described partition type radiation local air conditioning unit has the following problems:
1. Problem regarding coolness
The positions of the breeze outlets in the front panel of the partition unit are not ideal ones from the viewpoint of the synergetic cooling effect to be obtained by radiation cooling and convection cooling, which prevents satisfactory coolness from being obtained.
2. Problem regarding the apparatus size
The crossflow fan for blowing out breeze, set in the horizontal position, occupies a large space in the partition unit, which makes it difficult for the unit size to be diminished This constitutes a problem since partition type radiation local air conditioning units are required to be lighter, smaller and simpler.
SUMMARY OF THE INVEN
REFERENCES:
patent: 2162523 (1939-06-01), Blood et al.
patent: 4463569 (1984-08-01), McLarty
patent: 4505118 (1985-03-01), Altman
patent: 4694736 (1987-09-01), Yamagata et al.
patent: 4727385 (1988-02-01), Nishikawa et al.
patent: 4784445 (1988-11-01), Ott
Ishihara Takashi
Kadotani Kan-ichi
Onishi Tetsuo
Doerrler William C.
Kabushiki Kaisha Komatsu Seisakusho
Makay Albert J.
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