Abstract: The photoelectron generating plate includes on a substrate a photoelectron emission layer for emitting photoelectrons by the illumination of the light and having a barrier property. A diffusion of a material of an underlying base member into the photoelectron emission layer is blocked by the barrier layer and thus the surface of the photoelectron emission layer is prevented from being coated by the material of the base member. As a result, temporal reduction in the number of generated negative ions can be considerably ameliorated. In other words, the charge removing device attains a good durability for a long time.

Abstract: An air conditioning seat device includes an air blower, and a dehumidifier for dehumidifying the air sent from the air blower owing to adsorption, and blows out the dehumidified air to holes provided on a skin of a seat through an air duct. In this makeup, the sweat on the body surface and in the clothes is rapidly vaporized, causing a large amount of vaporization heat loss. Accordingly, the human body feels coolness, and steaminess on the skin is suppressed owing to the sweat vaporization.

Abstract: An air conditioning seat device includes an air blower, and a dehumidifier for dehumidifying the air sent from the air blower owing to adsorption, and blows out the dehumidified air to holes provided on a skin of a seat through an air duct. In this makeup, the sweat on the body surface and in the clothes is rapidly vaporized, causing a large amount of vaporization heat loss. Accordingly, the human body feels coolness, and steaminess on the skin is suppressed owing to the sweat vaporization.

Abstract: The photoelectron generating plate includes on a substrate a photoelectron emission layer for emitting photoelectrons by the illumination of the light and having a barrier property. A diffusion of a material of an underlying base member into the photoelectron emission layer is blocked by the barrier layer and thus the surface of the photoelectron emission layer is prevented from being coated by the material of the base member. As a result, temporal reduction in the number of generated negative ions can be considerably ameliorated. In other words, the charge removing device attains a good durability for a long time.

Abstract: An oven with a humidity conditioner is capable of cooking food by appropriately humidifying or dehumidifying it while the amount of steam contained in an oven cavity is being regulated. The oven includes a heater or magnetron for heating the food accommodated in the oven cavity, a humidity regulator for regulating the humidity inside the oven cavity, a cooking method selector for selecting a cooking method, and a controller for controlling the humidity regulator in response to a signal from the cooking method selector to selectively humidify and dehumidify the interior of the oven cavity.

Abstract: The humidity control apparatus comprising solid absorbers (13a, 13b) and a heater therebetween selects the suitable operation mode among a dehumidification operation, a dehumidification with ventilation operation, a humidification operation and a dehumidification with ventilation operation, in accordance with the detected data of a temperature sensor (17), a moisture sensor (18) and an oxygen sensor (19). The apparatus selects and operates a suitable operation mode by combination of controllings of an intake damper (10) for selecting the inlet air-flow course, an exhaust damper (11) for selecting the outlet air-flow course, the heater (14) for heating the solid adsorbers (13a, 13b), a fan for flowing the air in the solid adsorbers (13a, 13b).

Abstract: The present invention improves a conventional Bunsen burner by providing it with a primary combustion chamber which covers the primary flame forming portion of the Bunsen burner and which has a secondary flame hole immediately above the primary flame forming portion. The burner apparatus of the present invention produces reduced NO.sub.x since the overall combustion is divided into primary flame combustion and secondary flame combustion.Further according to the invention, an indication of incomplete combustion due to oxygen deficiency in the ambient air or blockade of the primary air passage can be dependably detected for cessation of combustion by providing a flame rod and measuring the impedance (or ion current) of the rod.