CN102705950A - Method for energy-saving air exchanging of small room - Google Patents

Abstract

An energy-saving ventilation method for a small room belongs to the field of air-conditioning energy-saving. Ventilation device includes wall bushing, heat recovery core, fan, _CO2 sensor, circuit control board, filter cover, louver air outlet; heat recovery core is fixed inside the wall bushing, and the end of the wall bushing Equipped with a two-way fan or a one-way fan at both ends of the wall bushing, the fan and the CO ₂ sensor are connected to the circuit control board; when the CO ₂ sensor detects that the concentration of indoor pollutants is higher than 1000ppm, the fan is started After the outdoor fresh air is sent to the room, the fan stops for a delay and then starts the fan to make the air flow in the opposite direction. After the air is exhausted to the outside, the fan stops for a delay. fan. The invention makes the indoor air fresh, and the temperature of the air entering the room in summer is not too high, and the temperature of the air entering the room in winter is not too low, which reduces the indoor cooling and heating load, and has the characteristics of energy saving, environmental protection, high intelligence, economy and practicality.

Description

A method for energy-saving ventilation in a small room

Technical field:

The invention relates to an energy-saving ventilation method for a small room, belonging to the technical field of air-conditioning energy-saving.

Background technique

With the improvement of people's living standards, people's requirements for indoor air environment are getting higher and higher. When the air conditioner is turned on in summer and heating in winter, people are often used to close the doors and windows of the house. For some occasions without fresh air system, such as student apartments, families In bedrooms, offices, etc., the concentration of indoor pollutants such as CO ₂ and VOC continues to rise, causing people to feel dizzy, drowsy, nausea and other symptoms, seriously affecting people's health and work and study.

Opening windows for natural ventilation is greatly affected by the external climate, which will cause large fluctuations in room temperature, increase building energy consumption, and cause indoor dust and noise pollution, especially for those who sit by the window indoors. The new energy-saving breathing window can solve the above problems to a certain extent, but the cost is relatively high. Ordinary buildings rarely adopt the method of leading the high-pressure gas from the front end of the air-conditioning indoor unit to the outside, and relying on the indoor and outdoor pressure difference to infiltrate the room through the doors and windows of the room to supply fresh air. It has the function of heat recovery. The air-air heat exchange device is added to the indoor unit of the air conditioner, and the indoor exhaust air and outdoor fresh air pass through the air-air heat exchange device, which can achieve the purpose of heat recovery and fresh air supply, but it will increase the size of the air conditioner indoor unit and reduce the room temperature. use space. The dual-channel full heat recovery ventilation device in an independent room is embedded in the wall and takes up less space, but this type of device is generally expensive, and sometimes even exceeds the price of the split air conditioner. The above-mentioned ventilation methods are usually designed according to the standard of reducing the indoor fresh air load as much as possible. Under special circumstances, such as when the number of people increases, the purpose of supplying fresh air on demand cannot be achieved.

Therefore, there is an urgent need for an energy-saving, environmentally friendly, economical and practical room ventilation device that can satisfy the small and intelligent on-demand supply of fresh air for rooms below 20 square meters, so as to solve the above problems.

Contents of the invention

The technical problem solved by the invention is to provide an energy-saving, environment-friendly, economical, practical and intelligent room ventilation method for air-conditioned rooms without a fresh air system.

The present invention solves the above technical problems through the following technical solutions: the ventilation device includes a wall bushing, a heat recovery core, a fan, a _CO2 sensor, a circuit control board, a filter cover, and a louver tuyere; the connection relationship is the wall bushing A heat recovery core is fixed inside, and a two-way fan or two one-way fans are installed at the end of the wall bushing, and both the fan and the _CO2 sensor are connected to the circuit control board.

In the aforementioned solution, when the CO ₂ sensor detects that the concentration of indoor pollutants is higher than 1000ppm, the fan is started to send outdoor fresh air to the room for (50~70)s, and the fan is stopped for a delay of (10~20)s, and then the fan is restarted for use. The air flows in the opposite direction, and the air is exhausted to the outside for (50~70)s, and the fan is stopped for a delay of (10~20)s, and the hot and cold fluids alternately pass through the heat recovery core. After several supplementary exhaust cycles, when the concentration of indoor pollutants is lower than 1000ppm, stop the fan. At the same time, the purpose of supplying fresh air and recovering ventilation heat is achieved.

The heat recovery core body is a porous structure made of high thermal conductivity material with large specific heat capacity, such as foamed copper, aluminum foam, beryllium oxide ceramics, polypropylene resin, and a porous structure made of waste products such as discarded aluminum beverage cans, etc. The porous structure formed by the erosion of waste metal blocks and the porous structure formed by the accumulation of waste steel balls and copper and aluminum pipe scraps.

The fan is a two-way axial flow fan, and there is no difference in forward and reverse performance.

The CO ₂ sensor has a measuring range of 0-2000ppm.

The circuit control board has a display for displaying indoor CO ₂ concentration, and can control the indoor CO ₂ concentration.

The wall bushing is a thermal insulation pipe made of different materials, and its shape varies according to different installation occasions, such as U-shaped, L-shaped, S-shaped, Y-shaped, T-shaped, etc.

The louver tuyere can be used not only as an air supply outlet but also as a return air outlet, and can adjust the wind direction and flow rate of the tuyere, such as H-type and V-shaped single-leaf louver tuyere with filters.

As a further improvement of the present invention, the heat recovery core can be radially arranged with copper tubes filled with low-boiling-point working fluid to further enhance the capacity of recovering waste heat.

As a further improvement of the present invention, the heat recovery core has a built-in nozzle, which is connected with a water tank by a small circulating water pump for room humidification and enhanced heat absorption capacity.

As a further improvement of the present invention, the heat recovery core can be coated with hygroscopic material to dehumidify the outdoor air.

The advantages of the present invention are that the temperature of the fresh air entering the room in summer will not be too high, and the temperature of the fresh air entering the room in winter will not be too low, reducing the cooling and heating load in the room and achieving the purpose of energy saving. In addition, it can avoid outdoor dust and noise pollution, and has the advantages of simplicity, practicality and economy. According to different human needs, by controlling the circuit board, controlling the indoor _CO2 concentration, adjusting the air volume and wind direction of the louver air outlet, so as to ensure the comfort and health requirements of different users, and meet the requirements of intelligence and humanization. The device of the present invention only needs to cost about 200-300 yuan per set.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a schematic diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of Embodiment 2 of the present invention.

Fig. 3 is a structural diagram of the heat recovery core of the present invention.

In the figure: 1-filter cover, 2-fan, 3-wall bushing, 4-louver tuyere, 5-heat recovery core, 6-circuit control board, 7-CO ₂ parameter sensor.

Detailed ways

Embodiment 1: As shown in Figure 1, a small room energy-saving ventilation device includes a wall bushing 3, a heat recovery core 5, a fan 2, a _CO sensor 7, a circuit control board 6, a filter cover 1, Venetian outlet 4. Put the wall bushing 3 in the wall hole, seal the surrounding, insert the heat recovery core 5 into the wall bushing, install the fan 2 and the filter cover 1 at the outdoor end of the wall bushing 3, and install the filter cover 1 on the wall The louver tuyere 4 is installed at the indoor end of the body liner 3, and the signal output terminal of the CO sensor 7 and the blower fan 2 are connected to the circuit control board 6, and the power is turned on, and the indoor CO concentration of the circuit control board ₆ is set _to be 1000ppm.

In the working process, first take summer as an example, when the _CO2 sensor 7 detects that the indoor _CO2 concentration is greater than 1000ppm, the fan 2 is started, and the outdoor air enters the room through the heat recovery core 5 and the louver air outlet 4, as indicated by the solid arrow in Figure 1 It shows that after sending fresh air outside for 50~70s, fan 2 stops for 10~20s, and then restarts the fan to make the air flow in reverse. The shutdown is delayed for 10 to 20 seconds, and the hot and cold fluids alternately pass through the heat recovery core 5, which is a replenishment and exhaust cycle. After performing several supplementary exhaust cycles, the fan 2 is stopped when the concentration of indoor pollutants is lower than 1000ppm. Since the indoor low-temperature air cools the outdoor high-temperature air through the heat recovery core 5, the temperature of the air entering the room will not be too high eventually. In the same way, in winter, the temperature of the air entering the room will not be too low. This not only reduces the indoor cooling and heating load, but also provides sufficient fresh air volume for the room, meeting the requirements of comfort, energy saving, and intelligence.

The heat recovery core is a porous structure made of a high thermal conductivity material with a large specific heat capacity, such as a porous structure made of foamed copper, aluminum foam, beryllium oxide ceramics, polypropylene resin, and discarded aluminum beverage cans. The porous structure formed by the erosion of waste metal blocks and the porous structure formed by the accumulation of waste steel balls and copper and aluminum pipe scraps.

The fan is a two-way axial flow fan, and there is no difference in forward and reverse performance.

The CO ₂ sensor has a measuring range of 0-2000ppm.

The circuit control board has a display for displaying indoor CO ₂ concentration, and can control the indoor CO ₂ concentration.

The wall bushing is a thermal insulation pipe made of different materials, and its shape varies according to different installation occasions, such as U-shaped, L-shaped, S-shaped, Y-shaped, T-shaped, etc.

The louver tuyere can be used not only as an air supply outlet but also as a return air outlet, and can adjust the wind direction and flow rate of the tuyere, such as H-type and V-shaped single-leaf louver tuyere with filters.

Embodiment 2: As shown in Figure 2, it is a plan view of a set of energy-saving ventilation devices for two adjacent rooms sharing a small room. The difference from Embodiment 1 is that the shape of the wall bushing is Y-shaped. By changing the shutter The flow rate of the tuyere can meet the ventilation requirements of the room 1 and the room 2 at the same time, and its working process is the same as that of the first embodiment.

The above is only a preferred and feasible embodiment of the present invention, and cannot therefore limit the scope of rights of the present invention. For those of ordinary skill in the art, it is possible to use the technical solutions and technical ideas of the present invention to make other various All corresponding changes and deformations should fall within the scope of protection required by the claims of the present invention.

Claims (9)

1. energy-conservation air exchanging method in small-sized room, it is characterized in that: air interchanger comprises body of wall lining, recuperation of heat core body, blower fan, CO ₂Sensor, circuit control panel, filter mantle, air grille; Its annexation is to be fixed with the recuperation of heat core body in the body of wall lining, two-way blower fan or two unidirectional blower fans is housed, blower fan and CO in the end of body of wall lining ₂Sensor all links to each other with circuit control panel; Work as CO ₂Sensor sensing chamber internal contamination substrate concentration, when being higher than 1000ppm, start blower fan to indoor send outdoor new wind (50 ~ 70) s after; Blower fan is shut down and is postponed (10 ~ 20) s time; And then start blower fan and make reverse air flow, to outdoor air draft (50 ~ 70) the s time, blower fan is shut down delay (10 ~ 20) the s time again; Cold fluid and hot fluid is alternately through the recuperation of heat core body, and be a benefit air draft cycle this moment; Carry out several and mend air draft week after date, after the indoor pollution substrate concentration is lower than 1000ppm, stop blower fan.

2. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1; It is characterized in that described recuperation of heat core body is a foam copper; Foamed aluminium, beryllium oxide ceramics, acrylic resin; The loose structure that discarded aluminum beverage can is processed, the leftover bits and pieces of loose structure that the erosion of waste metal piece forms and steel scrap pearl, copper aluminium tube is piled up the vesicular texture that forms.

3. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that described CO ₂Sensor, its measurement category are 0 ~ 2000ppm.

4. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that having on the described circuit control panel CO in the display room ₂The concentration display.

5. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that described body of wall lining is shaped as U type, L type, S type, Y type or T type.

6. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that H type or the V-type single leaf air grille of described air grille for the band filter.

7. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that described recuperation of heat core body can radially arrange the copper pipe that is filled with low boiling working fluid.

8. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that the built-in nozzle of described recuperation of heat core body, and nozzle utilizes a water circulating pump and tank to couple together.

9. the energy-conservation air exchanging method in a kind of small-sized room according to claim 1 is characterized in that described recuperation of heat core body scribbles hygroscopic material.

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