Abstract: A manufacturing apparatus equipped with product transfer means is arranged along the flow of products and provided with an air cleaning device. A partition panel is provided the downstream side of the clean air blow-off vent of the air cleaning device so as to form a clean air passageway and prevent dust from penetrating into the passageway, so that goods are manufactured and transferred in the cleaned air passageway.

Abstract: The present invention relates to an air-conditioning and an environmental control device for manufacturing plants of integrated circuits, chemicals and foods, hospitals, etc. where clean air is required. In this environmental control device, controlled air blows out from one side and is absorbed into the other side of the room. The blowing surface and the absorbing surface are divided on the basis of the predetermined module. Ventilating units are formed in a suitable size to conform to the module. Because of the construction, the controlling system of temperature or cleanliness of the air in the environmental control room can be rearranged to an optional one by replacing or changing positions of the ventilating units. Even if a controlling system is rearranged to an optional one, the room should be divided into a supply chamber, a mixing chamber, an environmental control chamber and a return chamber from one side to the opposite side of the room, so that air conditioned can flow as required.