JPS6363116U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram of a dehumidified dry air generating device for dental care showing an embodiment of the present invention, and Fig. 2 shows a state in which the four-way valve of the dehumidified dry air generating device shown in Fig. 1 is switched. 3 is a schematic configuration diagram showing an example of the arrangement when the dehumidified dry air generating device shown in FIG. 1 is applied to a dental medical facility; FIG. 4 is a diagram showing the inside of the dehumidifying cylinder shown in FIG. 1. 5 is a sequence circuit diagram showing a specific configuration example of the control circuit of the dental medical equipment shown in FIG. 1; FIG. 6 is a partial cross-sectional side view showing an example of the structure; FIG. Time chart showing the operating status of the dehumidified dry air generator. Fig. 7 is a partial cross-sectional side view showing an example of the structure of the cartridge type dehumidifying cylinder that can be applied in the middle of the dehumidified dry air supply piping shown in Fig. 1, and Fig. 8 is a state in which the dehumidifying cylinder shown in Fig. 7 is detached and regenerated. FIG. In the figure, 12 is an air compressor, 13 is a compressed air supply pipe (passage), 14 is a dehumidified dry air supply pipe (passage), 16 is dental medical equipment, 20 is a dehumidified dry air generator, and 21 is a supply valve ( on-off valve), 2
3 is a four-way valve (flow path switching valve), 26 and 27 are dehumidifying cylinders, 28 is an exhaust gap (passage), 29 is an exhaust valve (on/off valve), 30 is a solid moisture absorbent, 37 is a pressure switch, 3
8 and 39 are speed controllers (one-way throttle valves), and 40 is a control circuit, respectively.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of dehumidifying cylinders filled with a solid moisture absorbent inside, and compressed air produced by an air compressor is alternately supplied to one of the dehumidifying cylinders, while the other dehumidifying cylinder is supplied with compressed air produced by an air compressor. a flow path switching valve that communicates the air with an exhaust path to the atmosphere;
a distribution means for reducing the pressure of a portion of the air dehumidified and dried by one dehumidifying cylinder and guiding it to the other dehumidifying cylinder, and guiding the remaining dehumidified dry air to a dehumidified dry air supply passage to dental medical equipment; , an on-off valve provided in the middle of the compressed air supply passage to the flow path switching valve and the exhaust passage, and opening the on-off valve when dental medical equipment starts using dehumidified dry air for dental medical care; Dehumidifying dry air for dental care, comprising an operation control device that starts a flow path switching valve, stops the flow path switching valve after a predetermined period of time has elapsed from the end of use of the dehumidified dry air, and closes the on-off valve. generator. 2. An on-off valve in the middle of the exhaust passage closes the exhaust passage a predetermined time earlier than the start of each switching operation of the flow path switching valve in accordance with the switching cycle while the flow path switching valve is in operation, and The dehumidified dry air generating device for dental care according to claim 1, which is configured to open the exhaust passage in accordance with the completion of each switching operation of the valve.