Water box of respirator

Abstract

A water box of a respirator is formed by an upper cover (1) and a bottom box (3) in seal fit. A lower cover flange is arranged in the bottom box and separates the bottom box into a small cavity (3-2) and a large cavity (3-3). An upper cover flange is arranged on the upper cover (1). The upper cover flange fits the lower cover flange hermetically when the upper cover and the bottom box are in seal fit. A through hole is formed in the lower cover flange. A silicon funnel casing (4) is fixedly arranged in the through hole via a rubber seal (5). A heat conducting fin is arranged in the middle of the lower end face of the bottom box. An air inlet is formed in the sidewall of the small cavity. An air outlet is formed in the upper cover. The large-diameter end of the silicon funnel casing is inserted into a space between an inner annular flange and an outer annular flange to be in interference fit with the inner annular flange and the outer annular flange. The minimal height between a central hole in the small-opening end of the silicon funnel casing and the lower end face of the bottom box is 10-20mm larger than the height between a max line and the lower end face of the bottom box. The water box of the respirator has the advantage that the function of 360-degree backflow resisting can be achieved.

Description

Technical field [0001] The invention belongs to the technical field of medical devices, and particularly relates to a water box for a ventilator. Background technique [0002] During the treatment of the ventilator, pressurized air will be continuously blown out from the fan. The patient will wear a mask for a long time to breathe, which will cause excessive dryness and cause discomfort to the patient. If the weather becomes cold, the gas delivered by the ventilator will be cold air, and it is difficult for the patient to accept the pressurized cold air, and long-term use may easily cause the patient to catch a cold or catch cold. Therefore, the gas delivered by the ventilator needs to be heated and humidified. In most cases, a water storage box (hereinafter referred to as the water box) is arranged at the air outlet of the ventilator to store a certain amount of water. The water is heated to achieve the effect of humidification and heating. [0003] The ventilator suitable for h...

AI Technical Summary

Problems solved by technology

If the weather turns cold, the gas delivered by the ventilator will be cold air, and it is difficult for the patient to accept the pressurized cold air, and prolonged use will easily cause the patient to catch a cold, catch a cold, etc.

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