Foldable access door

Abstract

The invention discloses a foldable access door, and relates to an access door, in particular to a novel access door device. The problems that a traditional access door is poor in sealing, poor in heat preservation, inconvenient to overhaul and the like can be solved. The foldable access door comprises door plates, rotating shafts, hinges, sealing strips, door handles and sealing plugs, wherein the two door plates are in a forward folding state when the access door is opened, the two door plates are folded in opposite directions when the access door is close to be closed, the sealing plugs are plugged between the two door plates after the access door is closed, and the sealing strips between the door plates and between the door plates and a door frame can be pressed under the action of elastic force, so that the air tightness of the access door can be improved, a door lock is not needed, cold bridges are reduced, and the heat preservation performance is enhanced; when the access door is opened, the sealing plugs need to be taken out firstly, then the two door plates are folded in the opposite directions, the access door is opened by a certain angle in a flat opening mode, then the two door plates are folded in the forward direction, the access door is opened, the door opening space can be saved, the large door opening area can be obtained, and overhauling of a unit is facilitated.

Description

technical field [0001] The invention relates to an inspection door, in particular to a novel inspection door device. Background technique [0002] Existing air-conditioning boxes, fan boxes, fresh air ventilators, and other box equipment inspection doors mainly include swing doors and detachable doors. If the size of the side-hung door is too small, it is inconvenient to overhaul; if the size is too large, a larger opening space is required, and there are generally water pipes and pillars on the outside of the box that affect the opening of the maintenance door; Generally, the thickness is small, resulting in poor thermal insulation performance; the panel needs to be removed when taking out the equipment in the box, which is complicated to operate and will affect the airtightness of the box; the detachable door can not be affected by the opening space, but most of them use bolts or screws It is very difficult to carry out on-site hole matching during installation, and it is...

AI Technical Summary

Problems solved by technology

If the size of the side-hung door is too small, it is inconvenient to overhaul; if the size is too large, a larger opening space is required, and there are generally water pipes and pillars on the outside of the box that affect the opening of the maintenance door; Generally, the thickness is small, resulting in poor thermal insulation performance; the panel needs to be removed when taking out the equipment in the box, which is complicated to operate and will affect the airtightness of the box; the detachable door can not be affected by the opening space, but most of them use bolts or screws It is very difficult to carry out on-site hole matching during installation, and it is easy to cause the holes to be out of alignment in later use; the detachable door of the larger unit or hoisting unit is complicated to disassemble, and the detachable door usually adopts an easy-to-detach tight Fixtures are easy to form gaps and cause air leakage; the detachable door of the positive pressure section has no fixed place and easy to leak air; the detachable door with bolts or screws is easy to form a cold bridge and cause cold (heat) loss

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