CN102425820A - Split air conditioner capable of realizing night ventilation - Google Patents

Abstract

The invention discloses a split air conditioner capable of realizing night ventilation, which comprises a split air conditioner indoor unit, an outdoor unit, a filter screen, an electric return air inlet, an outdoor air inlet pipe, a fresh air inlet, an electric butterfly valve, a temperature sensor and a controller. The invention combines the fresh air pipeline controlled by the temperature sensor and the controller with the indoor unit of the split air conditioner, controls and realizes the air conditioner operation mode and the night ventilation operation mode of the air conditioner according to the temperature difference of indoor and outdoor air, and can achieve the purposes of saving energy and improving indoor thermal comfort.

Description

A Split Type Air Conditioner That Can Realize Ventilation at Night

technical field

The invention relates to a split-type air conditioner capable of realizing ventilation at night, in particular to a split-type air conditioner that can automatically introduce outdoor fresh air according to the temperature of indoor and outdoor air, and belongs to the technical field of building environment and equipment engineering.

Background technique

With the improvement of people's living standards, the use of air conditioners in residential buildings is becoming more and more common. Reducing air-conditioning energy consumption has become an important aspect of building energy conservation in recent years. In this context, the passive cooling technology using renewable energy has become a research hotspot in the construction industry. Among them, the night ventilation technology that uses a large number of cool night winds to reduce the indoor air temperature and the temperature of the building envelope is a very effective passive cooling method. However, due to the limitation of outdoor wind conditions, if only relying on the effect of natural wind for night ventilation, the effect of cooling is often not achieved, so sometimes mechanical ventilation is used. In order to save investment, the ordinary split-type air conditioner is improved so that it not only has the ability to ventilate at night in summer, but also has the ability to introduce fresh air into the air conditioner.

Contents of the invention

The object of the present invention is to provide a split type air conditioner which can improve indoor thermal comfort and energy saving. the

To achieve the above object, the present invention adopts the following technical solution: a split air conditioner capable of night ventilation, including indoor unit, outdoor unit, outdoor air introduction pipe, fresh air outlet, filter screen, electric butterfly valve, and controller. The indoor unit is equipped with a fan, a heat exchanger, an air outlet, and an electric return air outlet. One end of the outdoor air introduction pipe is connected to the indoor unit, and the other end leads to the outside through a hole in the outer wall, and a detachable filter is installed on the side connected to the indoor unit, and the outdoor air introduction pipe is equipped with an electric butterfly valve. An indoor temperature sensor and an outdoor temperature sensor are respectively arranged indoors and outdoors. The controller is connected with the indoor temperature sensor and the outdoor temperature sensor with a signal line, and is also connected with the electric air return port and the electric butterfly valve with a control line.

The split-type air conditioner capable of realizing ventilation at night has two operating modes and the ability to switch them. In summer, when the outdoor air temperature detected by the outdoor temperature sensor is lower than the indoor air temperature detected by the indoor temperature sensor, and the difference between the two reaches the set range, the outdoor unit of the air conditioner stops running, the electric return air outlet is closed, and the electric butterfly valve is fully opened. , to realize the operation mode of night ventilation. When the outdoor air temperature detected by the outdoor temperature sensor is greater than the indoor air temperature detected by the indoor temperature sensor, and the difference between the two reaches the set range, the outdoor unit of the air conditioner starts to run, the electric return air outlet is opened, and the electric butterfly valve is closed to realize air conditioning. operating mode.

The effect and benefit of the present invention is to switch the operating mode of the air conditioner according to the indoor and outdoor temperature difference, realize the air conditioning operating mode and the night ventilation operating mode of the air conditioner, and can achieve the purpose of saving energy and improving indoor thermal comfort.

Description of drawings

Fig. 1 is a schematic diagram of the structure principle of the present invention.

Detailed ways

As shown in Figure 1, a split-type air conditioner that can realize ventilation at night is characterized in that it includes an indoor unit 1, an outdoor unit 2, an outdoor air introduction pipe 3, a fresh air outlet 4, a filter screen 5, an electric butterfly valve 6, and a control unit. device7. The indoor unit 1 is provided with a fan 8, a heat exchanger 9, an air outlet 10, and an electric return air outlet 11. One end of the outdoor air introduction pipe 3 is connected with the indoor unit 1, and the other end passes through the outer wall hole 15 to lead to the outside, and a detachable filter screen 5 is installed at the side connected with the indoor unit, and the outdoor air introduction pipe is equipped with an electric butterfly valve 6. An indoor temperature sensor 12 and an outdoor temperature sensor 13 are respectively arranged indoors and outdoors. The controller 7 is connected with the indoor temperature sensor 12 and the outdoor temperature sensor 13 with a signal line 16 , and is also connected with the electric air return port and the electric butterfly valve with a control line 14 .

The present invention consists of night ventilation system, air conditioning system and their mutual conversion auxiliary control system. The working process of the night ventilation system is that the outdoor air whose temperature is lower than the indoor temperature enters the indoor unit 1 through the fresh air outlet 4 and the outdoor air introduction pipe 3 under the action of the fan 8 in the indoor unit 1, and then is sent into the room through the air outlet 11. . The size of the outdoor air introduction pipe 3 is determined according to indoor hygiene requirements and thermal comfort requirements. The working process of the air conditioning system is that under the action of the fan 8, the indoor air enters the indoor unit 1 through the electric return air outlet 11 and mixes with the fresh air entering from the fresh air outlet 4 and the outdoor air introduction pipe 3, and the mixed air is mixed with the heat exchanger 9. The heat exchanged refrigerant is then sent into the room through the air outlet 10. The cycle of the refrigerant side is the same as that of the prior art. The auxiliary control system for mutual conversion between the night ventilation system and the air conditioning system includes the control of the electric butterfly valve, the electric return air outlet and the outdoor unit of the air conditioner. The control of the three is set according to the night ventilation operation mode and the air conditioning operation mode. In the night ventilation operation mode, when the outdoor air temperature detected by the outdoor temperature sensor 13 is lower than the indoor air temperature detected by the indoor temperature sensor 12, and the difference between the two reaches the set range, the controller 7 initiates an action, and the electric butterfly valve is fully opened. The air conditioner outdoor unit 2 stops running, and the electric return air outlet 11 is closed. In the air conditioner operation mode, when the outdoor air temperature detected by the outdoor temperature sensor 13 is greater than the indoor air temperature detected by the outdoor temperature sensor 12, and the difference between the two reaches the set range, the electric butterfly valve is closed or closed, and the air conditioner outdoor unit 2 starts to operate. Operation, the electric return air outlet 11 is opened.

Claims (2)

1. the detachable air conditioner that can realize night ventilation is characterized in that: comprise indoor set, off-premises station, outdoor air inlet tube, fresh wind port, screen pack, electric butterfly valve, controller; Establish blower fan, heat exchanger, air outlet, electronic return air inlet in the said indoor set; Outdoor air inlet tube one end links to each other with indoor set, and the other end passes the exterior wall hole and leads to outdoorly, and installs detachable screen pack at the side place that links to each other with indoor set, outdoor air inlet tube dress electric butterfly valve; Indoor and outdoor is established indoor temperature transmitter and outdoor temperature sensor respectively; Said controller links to each other with holding wire with indoor temperature transmitter, outdoor temperature sensor, also links to each other with control line with electronic return air inlet, electric butterfly valve.

2. a kind of detachable air conditioner that can realize night ventilation according to claim 1 is characterized in that: the ability that possesses two kinds of operational modes and switching thereof; In summer; The indoor air temperature that the outside air temperature that detects when outdoor temperature sensor detects less than indoor temperature transmitter; And when the difference of the two reached setting range, air-conditioner outdoor unit was out of service, and electronic return air inlet is closed; The electric butterfly valve standard-sized sheet, the operational mode of realization night ventilation; The indoor air temperature that the outside air temperature that detects when outdoor temperature sensor detects greater than indoor temperature transmitter; And when the difference of the two reached setting range, air-conditioner outdoor unit brought into operation, and electronic return air inlet is opened; Electric butterfly valve turns down, and realizes the operational mode of air-conditioning.