Fresh air handling unit with self-adaptive mixed air supply function

Abstract

The utility model discloses a self-adaptive mixed air supply fresh air handling unit in the technical field of heating ventilation air conditioners, which comprises a mixing box, one side of the mixing box is fixedly connected and provided with an outdoor fresh air inlet pipeline, and one side of the surface of the outdoor fresh air inlet pipeline is provided with a first electric control valve. A quasi fresh air inlet pipeline is fixedly connected to the upper portion of the mixing box, a second electric control valve is installed on one side of the surface of the quasi fresh air inlet pipeline, and an air conditioning unit fresh air inlet is fixedly connected to one side of the mixing box. And the mixing ratio and the treatment intensity are dynamically optimized in combination with environmental parameters and air supplement requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the heating ventilation air conditioning technical field, concretely relates to a fresh air handling unit of adaptive mixed air supply. BACKGROUND

[0002] The fresh air handling unit of mixed air supply is an air handling device that can handle fresh air and return air simultaneously, commonly used to improve indoor air quality and regulate indoor temperature and humidity. This unit achieves more efficient air handling and energy utilization by mixing fresh air and return air.

[0003] Laboratory environment has strict requirements on air quality, and traditional fresh air handling units usually directly introduce outdoor fresh air and independently process temperature and humidity, resulting in the following problems:

[0004] 1. High energy consumption: when the outdoor and indoor temperature difference or humidity difference is large (such as high temperature and high humidity in summer or low temperature and low humidity in winter), high load processing is required for fresh air, resulting in serious energy waste.

[0005] 2. Resource redundancy: the laboratory requires a large amount of fresh air, but the existing system does not fully utilize the mixing potential of indoor low-pollution air.

[0006] 3. Control rigidity: existing technology cannot dynamically adjust the source of fresh air and the mixing ratio according to real-time environmental parameters, resulting in excessive processing or insufficient comfort, therefore we propose a fresh air handling unit of adaptive mixed air supply. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims to provide a fresh air handling unit of adaptive mixed air supply to solve the problems raised in the background technology.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a fresh air handling unit of adaptive mixed air supply, comprising a mixing box, one side of the mixing box is fixedly connected with an outdoor fresh air inlet pipeline, the surface of the outdoor fresh air inlet pipeline is installed on one side of a first electric regulating valve, the upper part of the mixing box is fixedly connected with a quasi-fresh air inlet pipeline, the surface of the quasi-fresh air inlet pipeline is installed on one side of a second electric regulating valve, and one side of the mixing box is fixedly connected with an air conditioning unit fresh air inlet.

[0009] Preferably, the indoor part of the outdoor fresh air inlet pipeline is respectively embedded with a first temperature sensor, a first humidity sensor, a first wind speed sensor and a first carbon dioxide sensor.

[0010] Preferably, the indoor part of the quasi-fresh air inlet pipeline is respectively embedded with a second temperature sensor, a second humidity sensor, a second wind speed sensor and a second carbon dioxide sensor.

[0011] Preferably, the inner part of the mixing box is respectively embedded with a third temperature sensor, a third humidity sensor and a third carbon dioxide sensor.

[0012] Preferably, the outer side of the mixing box is fixedly provided with a PLC control box, and the first temperature sensor, the first humidity sensor, the first wind speed sensor, the first carbon dioxide sensor, the second temperature sensor, the second humidity sensor, the second wind speed sensor, the second carbon dioxide sensor, the third temperature sensor, the third humidity sensor and the third carbon dioxide sensor are electrically connected with the PLC control box.

[0013] Preferably, one side of the PLC control box is provided with a touch control screen, and the touch control screen is electrically connected with the PLC control box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By introducing low-pollution indoor air to dilute high-load outdoor fresh air, the single treatment capacity is reduced.

[0016] 2. The mixing ratio and the treatment intensity are dynamically optimized in combination with the environmental parameters and the air supplement demand.

[0017] 3. When the indoor mixed air CO2 concentration is detected to exceed the standard, the outdoor fresh air mode is automatically switched to the pure outdoor fresh air mode and an alarm is given. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a whole structure schematic view of the utility model;

[0019] Fig. 2 It is a system structure schematic view of the utility model;

[0020] Fig. 3 It is a control logic flow structure schematic view of the utility model.

[0021] In the drawing: 1, outdoor fresh air inlet pipeline; 2, first electric regulating valve; 3, quasi fresh air inlet pipeline; 4, second electric regulating valve; 5, mixing box; 6, air conditioning unit fresh air inlet; 7, PLC control box; 8, touch control screen;

[0022] 9, first temperature sensor; 10, first humidity sensor; 11, first wind speed sensor; 12, first carbon dioxide sensor; 13, second temperature sensor; 14, second humidity sensor; 15, second wind speed sensor; 16, second carbon dioxide sensor; 17, third temperature sensor; 18, third humidity sensor; 19, third carbon dioxide sensor. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] Please refer to Figs. 1-3 The present application provides a technical solution: a fresh air handling unit with adaptive mixed air supply, comprising a mixing box 5, an outdoor fresh air inlet pipeline 1 fixedly connected to one side of the mixing box 5, a first electric regulating valve 2 installed on one side of the surface of the outdoor fresh air inlet pipeline 1, a quasi-fresh air inlet pipeline 3 fixedly connected above the mixing box 5, a second electric regulating valve 4 installed on one side of the surface of the quasi-fresh air inlet pipeline 3, and an air conditioning unit fresh air inlet 6 fixedly connected to one side of the mixing box 5.

[0025] Specifically, the indoor part of the outdoor fresh air inlet pipeline 1 is respectively embedded with a first temperature sensor 9, a first humidity sensor 10, a first wind speed sensor 11, and a first carbon dioxide sensor 12, the indoor part of the quasi-fresh air inlet pipeline 3 is respectively embedded with a second temperature sensor 13, a second humidity sensor 14, a second wind speed sensor 15, and a second carbon dioxide sensor 16, the indoor part of the mixing box 5 is respectively embedded with a third temperature sensor 17, a third humidity sensor 18, and a third carbon dioxide sensor 19, and the outer side of the mixing box 5 is fixedly installed with a PLC control box 7. The first temperature sensor 9, the first humidity sensor 10, the first wind speed sensor 11, the first carbon dioxide sensor 12, the second temperature sensor 13, the second humidity sensor 14, the second wind speed sensor 15, the second carbon dioxide sensor 16, the third temperature sensor 17, the third humidity sensor 18, and the third carbon dioxide sensor 19 are respectively electrically connected to the PLC control box 7. One side of the PLC control box 7 is provided with a touch control screen 8, and the touch control screen 8 is electrically connected to the PLC control box 7.

[0026] In this embodiment, by setting the outdoor fresh air inlet pipeline 1, external air can be directly introduced, by setting the quasi fresh air inlet pipeline 3, it is convenient to connect the laboratory corridor or the carbon dioxide concentration standard area, and internal air is extracted as secondary fresh air source, by setting the mixing box 5, cooperating with the first electric regulating valve 2 and the second electric regulating valve 4, the mixed ratio of double source fresh air can be dynamically adjusted according to the feedback of the first temperature sensor 9, the first humidity sensor 10, the first carbon dioxide sensor 12, the second temperature sensor 13, the second humidity sensor 14, the second carbon dioxide sensor 16, the third temperature sensor 17, the third humidity sensor 18 and the third carbon dioxide sensor 19, and the indoor and outdoor temperature and humidity, carbon dioxide concentration and other parameters can be monitored in real time, by setting the first wind speed sensor 11 and the second wind speed sensor 15, the actual air supply demand and mixed air flow can be detected, according to the temperature and humidity of the mixed fresh air, the operation strategy is given to the control system, and the minimum table cooling, heating or dehumidification operation is output, and the control system adopts a fuzzy PID algorithm or a machine learning model to generate optimal mixing ratio and processing parameters, if the temperature and humidity of the mixed fresh air are close to the set value, the table cooling / heating module is closed, and only filtered air is directly supplied.

[0027] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An adaptive hybrid air supply fresh air handling unit comprising a mixing box (5), characterized in that: One side of the mixing box (5) is fixedly connected with an outdoor fresh air inlet pipeline (1), the surface of the outdoor fresh air inlet pipeline (1) is provided with a first electric regulating valve (2), the upper side of the mixing box (5) is fixedly connected with a quasi fresh air inlet pipeline (3), the surface of the quasi fresh air inlet pipeline (3) is provided with a second electric regulating valve (4), and one side of the mixing box (5) is fixedly connected with an air conditioning unit fresh air inlet (6).

2. The fresh air handling unit with adaptive hybrid air supply according to claim 1, characterized in that: The inside of the outdoor fresh air inlet pipeline (1) is respectively embedded with a first temperature sensor (9), a first humidity sensor (10), a first wind speed sensor (11) and a first carbon dioxide sensor (12).

3. The fresh air handling unit with adaptive hybrid air supply according to claim 1, characterized in that: The inside of the quasi fresh air inlet pipeline (3) is respectively embedded with a second temperature sensor (13), a second humidity sensor (14), a second wind speed sensor (15) and a second carbon dioxide sensor (16).

4. The fresh air handling unit with adaptive hybrid air supply according to claim 1, characterized in that: The inside of the mixing box (5) is respectively embedded with a third temperature sensor (17), a third humidity sensor (18) and a third carbon dioxide sensor (19).

5. The self-adapting hybrid air supply fresh air handling unit according to claim 2, characterized in that: The outside of the mixing box (5) is fixedly provided with a PLC control box (7), and the first temperature sensor (9), the first humidity sensor (10), the first wind speed sensor (11), the first carbon dioxide sensor (12), the second temperature sensor (13), the second humidity sensor (14), the second wind speed sensor (15), the second carbon dioxide sensor (16), the third temperature sensor (17), the third humidity sensor (18) and the third carbon dioxide sensor (19) are electrically connected with the PLC control box (7).

6. The self-adapting hybrid air supply fresh air handling unit according to claim 5, characterized in that: One side of the PLC control box (7) is provided with a touch control screen (8), and the touch control screen (8) is electrically connected with the PLC control box (7).

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