Large-air-volume outdoor air replacement main machine

Abstract

The invention relates to a large-air-volume outdoor air replacement main machine. The main machine comprises a unit body, wherein an indoor air supply opening, an indoor air return opening, an outdoorfresh air opening and an outdoor air exhaust opening are sequentially formed in the upper end of the unit body in a straight-line mode, a left compartment, a middle compartment and a right compartment are arranged in the unit body, integrated air duct foam is installed at the middle compartment, a filter unit, a heat recoverer, a water pan and a circuit installation area are embedded in the integrated air duct foam, fans are installed in the left compartment and the right compartment on the two sides of the middle compartment correspondingly, and the filter unit is provided with a differential pressure switch used for monitoring the service life of the filter unit. The air replacement main machine is large in air volume, small in size and low in noise, meets the installation requirement of a large house, is good in the sealing effect, meets the outdoor ultralow-temperature environment use, does not occupy a large amount of indoor or balcony space, and is various in function, indoor air is purified, indoor, outdoor air exchange can be performed under the condition of a compact structure, meanwhile, the functions of differential pressure online detection and the like are achieved, and the service life of a filter element can be monitored.

Description

technical field [0001] The invention relates to a fresh air system, in particular to a large-volume outdoor air replacement main unit. Background technique [0002] Fresh air system, as a device to solve indoor and outdoor air exchange, is more and more widely used in buildings. Generally, the main unit of the fresh air system is mostly installed in the ceiling of the kitchen or bathroom, or wall-mounted on the wall, and the air volume is generally lower than 800m 3 / h; if it is a large-scale apartment or villa, it is necessary to install multiple devices. The more devices, the more space and noise. Therefore, the air volume of the fresh air host, the size of the indoor space occupied, and the operating noise have become several items of the fresh air system. Important parameters. The function of the fresh air host determines the structure, generally composed of the casing, air inlet and outlet, fan, heat exchanger, and filter screen, and the performance of these component...

AI Technical Summary

Problems solved by technology

Even the existing large air volume machines generally do not have a heat recovery device or have a heat recovery device with low exchange efficiency, and cannot be installed outdoors, taking up a lot of space indoors or on the balcony

The single function is also a problem in the current fresh air host. Most of the large air volume fresh air hosts only achieve air purification. In the case of a compact structure, they cannot perform functions such as air replacement, defrosting, and online differential pressure detection.

[0004] Chinese patent CN207688351U discloses a heat-exchanging air purification fresh air fan with an internal full-foam structure, including a shell made of sheet metal, filled with an integrally formed EPP body foam in the shell, and embedded with a high-efficiency filter, a medium-efficiency filter, The heat recovery device, the water tray, and the centrifugal fan are installed on the fan mounting plate, which is embedded in the groove of the same shape on the foam of the EPP body, and inserted into the bypass valve assembly in the foam of the EPP body And the air inlet valve assembly, but the fresh air fan of this patent has a small air volume, a single function, and does not have the online detection function of pressure difference, which is inconvenient to use

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