CN218154632U - Energy-concerving and environment-protective intelligent new trend system suitable for transition season - Google Patents

Abstract

The utility model discloses an energy-saving environment-friendly intelligent fresh air system suitable for transition seasons, which comprises a sensible heat recovery exchanger, an exhaust fan, a fresh air fan, an air quality detector and a control module; the air exhaust outlet and the fresh air inlet of the sensible heat recovery exchanger are respectively communicated with the outdoor environment; the exhaust fan is arranged at an exhaust inlet of the sensible heat recovery exchanger and used for exhausting indoor air to the outside; the fresh air machine is arranged at a fresh air outlet of the sensible heat recovery exchanger and is used for sending outdoor air into a room; the air quality detector is arranged in an outdoor environment and is in communication connection with the control module, and the control module controls the exhaust fan and the fresh air fan to work according to an output signal of the air quality detector; in the transition season, utilize air quality detector to detect outdoor environment air quality, through judging whether for haze weather, the working method of intelligent selection filtration new trend or passive new trend reduces new trend and filters cost and ventilation power consumption.

Description

Energy-saving and environmentally friendly intelligent fresh air system suitable for transitional seasons

technical field

The utility model relates to an energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons, belonging to the technical field of fresh air systems.

Background technique

Most of the existing civil buildings are equipped with air-conditioning systems. The doors and windows are often closed tightly to prevent the infiltration of outdoor air. If no fresh air system is installed at this time, the respiration of personnel consumes oxygen and produces carbon dioxide, which makes the indoor air quality worse and worse. to the normal work and life of people in the building; sensible heat recovery fresh air fans are widely used in offices, catering, high-tech residences and other types of buildings. While providing fresh air and discharging dirty air, they can also filter suspended PM2.5 particles, and recover the sensible heat in the exhaust air in the air-conditioning season, so as to achieve the purpose of ventilation and energy saving in the air-conditioning season;

However, taking hot summer and cold winter regions as an example, the air conditioning season is about 7 to 8 months a year, and the rest of the time is a transitional season. The outdoor air temperature meets the indoor thermal comfort requirements and can be directly sent indoors; Fans are ventilated by opening windows, which cannot ensure that fresh air can be stably and effectively sent to various areas of the building, especially in rooms without windows; in addition, opening windows for ventilation in haze weather cannot guarantee the quality requirements of indoor air; on the contrary, if the transition season continues Using sensible heat recovery fresh air fans, the air temperature in the exhaust air is similar to that of the outdoor fresh air, which has no sensible heat recovery value, which increases the power consumption of sensible heat recovery fresh air fans.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems existing in the prior art, and to provide an energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons, which is used to detect the air quality of the outdoor environment by using an air quality detector in the transitional season, and pass the judgment Whether it is foggy weather, intelligently choose the working mode of filtering fresh air or passive fresh air to ensure indoor air quality, prolong the service life of the air filter, and adopt the mode of independent operation of a single fan, so that the power consumption of the fresh air system can be halved and the fresh air can be reduced. Filtration cost and ventilation power consumption, effectively reducing energy consumption, energy saving and environmental protection.

In order to achieve the above object, the utility model adopts the following technical solutions:

An energy-saving and environmentally friendly intelligent fresh air system suitable for transitional seasons, including a sensible heat recovery exchanger, an exhaust fan, a fresh air fan, an air quality detector and a control module; the exhaust air outlet and the fresh air inlet of the sensible heat recovery exchanger respectively communicated with the outdoor environment; the exhaust fan is arranged at the exhaust inlet of the sensible heat recovery exchanger, and the exhaust fan is used to discharge the indoor air to the outside; the fresh fan is arranged at the sensible heat recovery exchanger At the fresh air outlet, the fresh air blower is used to send the outdoor air into the room;

The air quality detector is arranged in the outdoor environment, and the air quality detector is used to detect the enthalpy value and PM2.5 concentration of the air in the outdoor environment; the air quality detector is connected with the control module in communication, and the control module according to The output signal of the air quality detector controls the work of the exhaust fan and the fresh fan.

As a further preference of the present invention, the exhaust outlet of the sensible heat recovery exchanger communicates with the exhaust louvers through an exhaust pipe, and the fresh air inlet of the sensible heat recovery exchanger communicates with the fresh air louvers through a fresh air pipe.

As a further preference of the present utility model, an exhaust valve is arranged on the exhaust pipe, and a fresh air valve is arranged on the fresh air pipe; the control module controls the exhaust valve and the fresh air valve to work according to the output signal of the air quality detector; The exhaust valve and the exhaust fan work synchronously, the exhaust valve opens synchronously when the exhaust fan starts, and the exhaust valve closes synchronously when the exhaust fan stops. The fresh air valve is closed synchronously when the fan stops.

As a further preference of the present utility model, one end of the exhaust fan communicates with the exhaust inlet of the sensible heat recovery exchanger, and the other end of the exhaust fan communicates with the indoor exhaust outlet through an indoor exhaust pipe; One end of the fresh air fan communicates with the fresh air outlet of the sensible heat recovery exchanger, and the other end of the fresh air fan communicates with the indoor fresh air outlet through the indoor fresh air pipe.

As a further preference of the present utility model, a cold and hot water coil is arranged in the air passage between the fresh air outlet of the sensible heat recovery exchanger and the fresh fan, and the cold and hot water coil communicates with the external air conditioning system; When needed, the fresh air is cooled or heated through the hot and cold water coils.

As a further preference of the present invention, an air filter is provided at the fresh air inlet of the sensible heat recovery exchanger; the air filter is used to filter particulate matter in the air to ensure the air quality of the fresh air.

As a further preference of the present utility model, the air quality detector communicates with the control module through a weak current signal line; the air quality detector and the control module adopt a communication connection mode of wired connection to ensure the connection between the air quality detector and the control module. The stability of the communication connection between them can prevent the signal transmission process from being disturbed by the external environment.

The utility model is beneficial in that:

In the transition season, the air quality detector is used to detect the air quality of the outdoor environment. By judging whether it is haze weather, intelligently choose the working mode of filtering fresh air or passive fresh air to ensure indoor air quality and prolong the service life of the air filter. The independent operation mode of the fan can reduce the power consumption of the fresh air system by half, reduce the cost of fresh air filtration and ventilation power consumption, effectively reduce energy consumption, save energy and protect the environment.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Meanings of reference signs in the figure:

1-Sensible heat recovery exchanger, 2-Exhaust fan, 3-Fresh fan, 4-Air quality detector, 5-Control module, 6-Exhaust pipe, 7-Exhaust louvers, 8-Fresh air pipe, 9 - fresh air louvers, 10- hot and cold water coil, 11- exhaust valve, 12- fresh air valve, 13- indoor exhaust pipe, 14- indoor fresh air pipe, 15- air filter, 16- weak current signal line.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is made concrete introduction.

As shown in Figure 1, this embodiment is an energy-saving and environmentally friendly intelligent fresh air system suitable for transitional seasons, including a sensible heat recovery exchanger 1, an exhaust fan 2, a fresh air fan 3, an air quality detector 4 and a control module 5; The exhaust air outlet and the fresh air inlet of the sensible heat recovery exchanger 1 are respectively connected with the outdoor environment; the exhaust fan 2 is arranged at the exhaust air inlet of the sensible heat recovery exchanger 1, and the exhaust fan 2 is used to discharge the indoor air to the outdoor The fresh air blower 3 is set at the fresh air outlet of the sensible heat recovery exchanger 1, and the fresh air blower 3 is used to send the outdoor air into the room;

Air quality detector 4 is arranged in the outdoor environment, and air quality detector 4 is used for detecting the enthalpy value of the air in the outdoor environment and PM2.5 concentration; Air quality detector 4 is connected with control module 5 communication, and control module 5 is according to air quality The output signal of the detector 4 controls the exhaust fan 2 and the fresh air fan 3 to work.

In this embodiment, the exhaust outlet of the sensible heat recovery exchanger 1 communicates with the exhaust louvers 7 through the exhaust pipe 6 , and the fresh air inlet of the sensible heat recovery exchanger 1 communicates with the fresh air louvers 9 through the fresh air pipe 8 .

In this embodiment, an exhaust valve 11 is provided on the exhaust pipe 6, and a fresh air valve 12 is provided on the fresh air pipe 8; the control module 5 controls the exhaust valve 11 and the fresh air valve 12 to work according to the output signal of the air quality detector 4; In the embodiment, the exhaust valve 11 works synchronously with the exhaust fan 2, the exhaust valve 11 is opened synchronously when the exhaust fan 2 is started, and the exhaust valve 11 is closed synchronously when the exhaust fan 2 is stopped; similarly, the fresh air valve 12 is synchronized with the fresh air fan 3 Work, the fresh air valve 12 is opened synchronously when the fresh air blower 3 starts, and the fresh air valve 12 is closed synchronously when the fresh air blower 3 stops.

In this embodiment, one end of the exhaust fan 2 communicates with the exhaust inlet of the sensible heat recovery exchanger 1, and the other end of the exhaust fan 2 communicates with the indoor exhaust outlet through the indoor exhaust pipe 13; The fresh air outlet of the heat recovery exchanger 1 is connected, and the other end of the fresh air blower 3 is connected with the indoor fresh air outlet through the indoor fresh air pipe 14 .

In this embodiment, a cold and hot water coil 10 is arranged in the air passage between the fresh air outlet of the sensible heat recovery exchanger 1 and the fresh air fan 3, and the cold and hot water coil 10 communicates with the external air conditioning system; The cold and hot water coil 10 cools or heats the fresh air.

In this embodiment, the fresh air inlet of the sensible heat recovery exchanger 1 is provided with an air filter 15; the air filter 15 is used to filter particulate matter in the air to ensure the air quality of the fresh air; in this embodiment, the PM2. 5 Filtration efficiency is greater than 95%.

In this embodiment, the air quality detector 4 communicates with the control module 5 through the weak current signal line 16; the communication connection mode of wired connection is adopted between the air quality detector 4 and the control module 5 to ensure that the air quality detector 4 and the control module The stability of the communication connection between 5, to avoid the interference of the external environment during the signal transmission process.

The working process and principle of the present embodiment are as follows:

During the transition season, utilize the air quality detector 4 that is arranged in the outdoor environment to detect and identify the enthalpy value and the PM2.5 concentration of the air in the outdoor environment;

When the air quality detector 4 measures the outdoor air enthalpy value at 28~ ^61kJ /kg, it is determined that this is a transitional season, and when the PM2. During the above two conditions, the air quality detector 4 outputs an electrical signal and is fed back to the control module 5 by the weak current signal line 16, and the control module 5 judges according to the electrical signal output by the air quality detector 4 that it now belongs to the non-haze weather in the transition season, and the control Module 5 controls the exhaust valve 11 to open and controls the exhaust fan 2 to start. At the same time, the control module 5 controls the fresh air valve 12 to close and controls the fresh air fan 3 to stop. The indoor air is discharged to the outside through the exhaust fan 2, and the indoor air passes through the indoor exhaust outlet, The indoor exhaust pipe 13, exhaust fan 2, sensible heat recovery exchanger 1, exhaust pipe 6 and exhaust louvers 7 are exhausted to the outside. Negative pressure makes outdoor fresh air enter the room from the window, and continues to flow indoors to achieve the effect of indoor air replacement; in non-smog weather, stop the fresh air supply from the fresh fan 3, start the exhaust fan 2 to exhaust the air, and realize the fresh air When the power consumption of the system is halved, the turbid air in the room is exhausted through the exhaust fan 2 to form a negative pressure in the room, and the wind is naturally taken in through the window to provide fresh and clean air to the building room stably and effectively, and to avoid ineffective heat in the transition season. While recovering, stopping the fresh air blower 3 also avoids the unnecessary work of the air filter 15, avoids the waste of consumables caused by the unified filtering mode, prolongs the service life of the air filter 15, and reduces the cost of fresh air filtration.

When the air quality detector 4 measures the outdoor air enthalpy value at 28~ ^61kJ /kg, it is determined that this is a transitional season, and when the PM2. When above-mentioned two conditions are satisfied, the air quality detector 4 outputs an electric signal and is fed back to the control module 5 by the weak electric signal line 16, and the control module 5 judges according to the electric signal output by the air quality detector 4 that it belongs to the haze weather in the transition season, and the control Module 5 controls the fresh air valve 12 to open and controls the fresh air fan 3 to start. At the same time, the control module 5 controls the exhaust valve 11 to close and controls the exhaust fan 2 to stop. The outdoor air is sent into the room through the fresh air fan 3, and the outdoor air passes through the fresh air louver 9, Fresh air pipe 8, air filter 15, sensible heat recovery exchanger 1, fresh air fan 3, indoor fresh air pipe 14 and indoor fresh air outlet are sent into the room. Under the action of wind pressure, the CO ₂ is discharged to the outside through the gaps or windows of doors and windows, achieving the effect of indoor air replacement, ensuring the air quality and necessary fresh air demand in the indoor personnel activity area of the building; realizing the opening of a new building in haze weather. Fan 3 supplies air, stops exhaust fan 2 to exhaust air, so as to provide fresh and clean air to the room while the power consumption of the fresh air system is halved, so that a positive pressure is formed in the room, and the turbid air in the room passes through the doors and windows under the action of wind pressure Slits or windows to discharge to the outside.

The utility model realizes that in the transition season, the air quality detector is used to detect the air quality of the outdoor environment, and by judging whether it is haze weather, the working mode of filtering fresh air or passive fresh air is intelligently selected to ensure the indoor air quality and prolong the service life of the air filter. The independent operation mode of a single fan can halve the power consumption of the fresh air system, reduce the cost of fresh air filtration and ventilation power consumption, effectively reduce energy consumption, save energy and protect the environment.

In describing the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention. Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection", "connection" and "setting" should be understood in a broad sense, for example, it can be a fixed connection , setting, or detachable connection, setting, or integral connection and setting; it can be mechanical connection or electrical connection; it can be directly connected, or indirectly connected through an intermediary, or it can be internal to the two components. connection; those skilled in the art can understand the specific meanings of the above terms in the utility model according to specific situations.

The basic principles, main features and advantages of the present utility model have been shown and described above; those skilled in the art should understand that the above-mentioned embodiments do not limit the present utility model in any form, and those obtained by means of equivalent replacement or equivalent transformation The technical solutions all fall within the protection scope of the present utility model.

Claims (7)

1. An energy-saving and environmentally friendly intelligent fresh air system suitable for transitional seasons, characterized in that it includes a sensible heat recovery exchanger, an exhaust fan, a fresh air fan, an air quality detector and a control module; the exhaust air of the sensible heat recovery exchanger The outlet and the fresh air inlet are respectively communicated with the outdoor environment; the exhaust fan is arranged at the exhaust inlet of the sensible heat heat recovery exchanger, and the exhaust fan is used to discharge the indoor air to the outside; the fresh air fan is arranged at the sensible heat recovery exchanger. At the fresh air outlet of the heat recovery exchanger, the fresh air blower is used to send the outdoor air into the room; The air quality detector is arranged in the outdoor environment, and the air quality detector is used to detect the enthalpy value and the PM2.5 concentration of the air in the outdoor environment; the air quality detector is connected with the control module in communication, and the control module according The output signal of the air quality detector controls the work of the exhaust fan and the fresh fan. 2. The energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons according to claim 1, characterized in that the exhaust outlet of the sensible heat recovery exchanger communicates with the exhaust louvers through the exhaust pipe, and the sensible heat The fresh air inlet of the heat recovery exchanger communicates with the fresh air louvers through the fresh air pipe. 3. The energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons according to claim 2, wherein an exhaust valve is arranged on the exhaust pipe, and a fresh air valve is arranged on the fresh air pipe; the control module according to The output signal of the air quality detector controls the exhaust valve and the fresh air valve to work. 4. The energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons according to claim 1, characterized in that one end of the exhaust fan communicates with the exhaust inlet of the sensible heat recovery exchanger, and the other end of the exhaust fan The indoor exhaust pipe communicates with the indoor air outlet; one end of the fresh air fan communicates with the fresh air outlet of the sensible heat recovery exchanger, and the other end of the fresh air fan communicates with the indoor fresh air outlet through the indoor fresh air pipe. 5. The energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons according to claim 4, characterized in that, a hot and cold water tray is arranged in the airflow channel between the fresh air outlet of the sensible heat recovery exchanger and the fresh fan pipes, and the hot and cold water coils communicate with the external air conditioning system. 6. The energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons according to any one of claims 1-5, characterized in that an air filter is provided at the fresh air inlet of the sensible heat recovery exchanger. 7. The energy-saving and environment-friendly intelligent fresh air system suitable for transitional seasons according to claim 1, wherein the air quality detector is communicatively connected to the control module through a weak current signal line.

Images