Humidifier humidifying capacity testing device and testing method

Abstract

The invention provides a humidifier humidifying capacity testing device which is used for testing a humidifier to be tested and comprises an environment temperature adjusting box, a first heat exchange assembly and a second heat exchange assembly, and the first heat exchange assembly and the second heat exchange assembly are arranged in the environment temperature adjusting box. The first heat exchange assembly comprises a container, a first heat exchange pipe and a second heat exchange pipe. A first liquid heat exchange medium is accommodated in the container; at least part of the first heatexchange tube is arranged in the container, gas passes through the first heat exchange tube, the second heat exchange tube is used for passing through a first liquid heat exchange medium, the gas canexchange heat with the first liquid heat exchange medium through the first heat exchange tube, the first heat exchange tube is connected with a humidifier to be tested, and the gas can be input into the humidifier to be tested through the first heat exchange tube; the second heat exchange assembly is used for exchanging heat with the first liquid heat exchange medium in the second heat exchange pipe. According to the test device, it can be guaranteed that the flow of gas input into the humidifier to be measured is not limited, and it can be guaranteed that the temperature of the gas input intothe humidifier to be measured is accurately controlled.

Description

technical field [0001] The invention relates to the technical field of medical device detection, in particular to a device and method for testing the humidification capacity of a humidifier. Background technique [0002] The humidifier to be tested is a medical device in the respiratory department that adds moisture to the inhaled gas of the patient. It is mainly used to keep the patient's respiratory tract moist and reduce the damage that may be caused by the dry respiratory tract of the patient when the patient is using a ventilator for a long time or the respiratory tract is insufficient. Therefore, the humidification capacity and heat output safety of the humidifier are the core technical indicators for evaluating the quality of the humidifier to be tested. [0003] In the related technology, for example, the patent application number 201510248962.3 discloses a humidifier humidification capacity test device, which can realize the separate adjustment of the ambient temper...

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Problems solved by technology

[0004] However, the adjustment of the temperature of the gas input into the humidifier to be tested by the humidifier humidification capacity test device is realized through the heat exchange between the spiral tube in the gas temperature buffer box and the air, because the capacity of the heat exchange chamber of the gas temperature buffer box The limitation of the gas may lead to a certain limitation of the flow range of the input gas to the humidifier to be tested; in addition, due to the small heat capacity of the gas and the large thermal inertia of the thermal components, it may cause the compressor or heating When the humidifier is turned on and off, the gas temperature fluctuation range in the heat exchange chamber is relatively large (generally about ±2 degrees), which is not conducive to the precise control of the temperature of the gas input into the humidifier to be tested.

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