Constant-temperature constant-humidity test chamber

Abstract

The invention discloses a constant-temperature constant-humidity test chamber comprising a case body inside which a working chamber, a refrigerating component, a heating component, a humidifying component and an electrical component are arranged. The test chamber further comprises a circulating air system, the circulating air system is arranged at the top of the case body, an air outlet is formed at the top of the case body, the working chamber is arranged inside the case body and positioned at the rear part of the door of the case body, a test sample holder is arranged inside the working chamber, the test sample holder comprises a plurality of horizontal grid plates which are arranged with a certain distance from up down inside the working chamber, an air supply passage and a return air passage are formed on two sides of the test sample holder, and the heating component is arranged beside the air outlet which is formed at the top of the case body. The constant-temperature constant-humidity test chamber has a simple structure, is convenient for fabrication and assembly, reduces the running cost during use, and has a long service life, and high precision of temperature and humidify control.

Description

technical field [0001] The invention belongs to the field of building material instruments, and relates to a constant temperature and humidity test box, which is suitable for temperature and humidity tests on test pieces such as thermal insulation materials, coiled materials and coatings. Background technique [0002] The constant temperature and humidity test chambers in the prior art all contain a heating system, a refrigeration system, a humidification system, a dehumidification system, and a control system for making these systems work in harmony. In addition to the relatively simple heating system, the systems are relatively complex. The refrigeration system and the dehumidification system generally require two sets of independent compressor refrigeration systems, and the box body also needs better thermal insulation performance, so the price is relatively expensive. In addition, the existing constant temperature and humidity chamber has high operating cost, high power ...

AI Technical Summary

Problems solved by technology

Except for the relatively simple heating system, the systems are relatively complex. The refrigeration system and the dehumidification system generally need to use two sets of independent compressor refrigeration systems, and the box body also needs better thermal insulation performance, so the price is relatively expensive.

In addition, due to the limitations of its principle, the existing constant temperature and humidity chamber has high operating costs, high power consumption, and high maintenance costs; in order to improve control accuracy, the compressor must be started frequently, which will reduce the service life of the compressor refrigeration or dehumidification system

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