CN104818779A - Ventilation heat recovery radiation external wall system - Google Patents

Abstract

The invention relates to the technical field of building environmental protection, in particular to a ventilated heat recovery radiation exterior wall system to reduce energy consumption without increasing excessive costs. The exterior wall system mainly includes an outer wall, a radiation wall, an inner insulation layer and a ventilation interlayer, wherein the radiation wall is close to the indoor side, and a capillary network is laid inside; the inner insulation layer is arranged between the outer wall and the radiation wall. Between, the ventilation interlayer is arranged between the inner insulation layer and the outer wall; the radiation wall and the lower part of the inner insulation layer are provided with a first ventilation flow channel communicating with the ventilation interlayer, and the upper part of the outer wall is There is a second ventilation passage connected to the ventilation interlayer, switches are provided on the first ventilation passage and the second ventilation passage, and a fan is provided near the first ventilation passage indoors. The invention can reduce the influence of outdoor weather conditions on indoor temperature fluctuations, and has the advantages of energy saving, environmental protection and low cost.

Description

A ventilated heat recovery radiant exterior wall system

technical field

The invention relates to the technical field of building environmental protection, in particular to a ventilation heat recovery radiation exterior wall system.

Background technique

Existing air-conditioned rooms are generally equipped with a fresh air supply system, and at the same time, an exhaust system is also required. The enthalpy value of the exhaust air temperature is lower than that of the outdoors in summer, and higher than that of the outdoors in winter. It can be recycled in both winter and summer. At the same time, using a heat recovery device to recover the energy of the exhaust air is one of the energy-saving measures for building energy conservation. The ventilation method for ordinary houses is mainly natural ventilation, and the infiltration air volume of natural ventilation is generally difficult to meet the indoor air quality requirements. Therefore, it is a more feasible method to use mechanical exhaust to recover the energy of the exhaust. However, although the installation of the exhaust heat recovery device can save energy and reduce the operating cost of the air conditioner, it needs to increase the project investment, and the project construction pays great attention to additional investment. Therefore, heat recovery solutions are often ignored or even rejected.

Contents of the invention

In order to address the shortcomings of the above-mentioned prior art, the present invention provides a ventilated heat recovery radiant exterior wall system to reduce energy consumption without increasing excessive costs.

The present invention achieves the above-mentioned purpose of the invention through the following technical solutions:

A ventilated heat recovery radiant exterior wall system comprising an exterior wall, further comprising:

A radiating wall, the radiating wall is close to the indoor side, and a capillary network is laid in the radiating wall;

an inner insulation layer, the inner insulation layer is arranged between the outer wall and the radiation wall;

A ventilation interlayer, the ventilation interlayer is arranged between the inner insulation layer and the outer wall;

A first ventilation channel communicating with the ventilation interlayer is provided below the radiating wall and the inner insulation layer, and a second ventilation channel communicating with the ventilation interlayer is provided above the outer wall , the first ventilation channel and the second ventilation channel are provided with a switch, and the first ventilation channel is provided with a fan near the room.

Further, air-conditioned hot water or cold water can flow through the capillary network.

Preferably, a paint layer is provided on the side of the radiating wall close to the room, so as to increase the visual aesthetic effect of the room.

The above-mentioned ventilation channel can be closed by a switch when heating/cooling is not needed indoors, forming a closed air heat insulation layer for further heat insulation.

Compared with the prior art, the present invention has the following beneficial effects:

The ventilation and heat insulation heating/cooling exterior wall system of the present invention is used on the exterior wall, adopts capillary network radiation heating/cooling, and has uniform heat dissipation, and the added inner insulation layer prevents heat from being lost outside the outer wall, and at the same time, the air in the interlayer is ventilated The enthalpy value is lower than outdoors in summer and higher than indoors in winter, which can keep the temperature of the inner insulation layer constant. And this system directly utilizes the waste heat of the exhaust air, so the purpose of energy saving is achieved. Due to the existence of the air flow channel, the indoor hot air (heating) or cold air (cooling) can heat or cool the exterior wall of the building when it flows through the ventilation flow channel, so as to play the role of heat recovery, which can further reduce the outdoor weather. Effect of conditions on room temperature fluctuations. And in the non-air-conditioning or heating season, the switch of the air passage is closed, and the enclosed air layer can also reduce the loss of indoor heat.

Description of drawings

Fig. 1 is a schematic structural view of the ventilated heat recovery radiant exterior wall system of the present invention.

Figure 2 is a schematic diagram of the capillary network in the radiant wall.

Detailed ways

In order to make the technical problems and technical solutions to be solved by the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, a ventilated heat recovery radiant exterior wall system mainly includes a coating layer 1, a radiant wall body 2, an inner insulation layer 5, a ventilation interlayer 6 and an outer layer in sequence from indoor 9 to outdoor 10. Wall 7. Wherein, the radiating wall 2 is close to the side of the indoor 9, and the radiating wall 2 is provided with a capillary network, 13 is the water inlet of the capillary network, and 14 is the water outlet of the capillary network, and the air-conditioning hot water or cold water can be circulated in the capillary network as required; The inner insulation layer 5 is arranged between the outer wall 7 and the radiation wall 2; the ventilation interlayer 6 is arranged between the inner insulation layer 5 and the outer wall 7; The first ventilation channel 8 communicating with the ventilation interlayer 6, the outer wall 7 top is provided with the second ventilation channel 4 communicating with the ventilation interlayer 6, the first ventilation channel 8 and the second ventilation channel 4 are all provided with There are switches, the switch 12 is located in the first ventilation channel 8, the switch 11 is located in the second ventilation channel 4, and the first ventilation channel 8 is provided with a fan 3 near the room to provide power for exhausting the entire system.

When the system exhausts air, it is discharged through the first ventilation channel 8, the ventilation interlayer 6, and the second ventilation channel 4 near the indoor side. When cooling in summer or heating in winter, the capillary network laid in the radiant wall 2 flows cold water or hot water at a certain temperature that meets the indoor load, and the inner insulation layer 5 keeps the radiant wall 2 insulated, and the indoor air quality is not good and needs to be exhausted , turn on the fan 3, because the indoor air enthalpy value is lower than that of the outdoor in summer and higher than that of the outdoor in winter, the discharged air passes through the first ventilation channel 8 and passes through the ventilation interlayer 6 so that the temperature of the inner insulation layer 5 will not be too high in summer and too low in winter. The heat exchange amount of the inner insulation layer 5 outside. When in non-cooling or heating or when there is no need for exhaust, the switch 12 of the first ventilation flow channel 8 and the switch 11 in the second ventilation flow channel 4 can be closed by themselves to form a closed air insulation layer to slow down the impact of outdoor temperature changes. Influence of indoor temperature.

Claims (3)

1. A ventilated heat recovery radiant exterior wall system, comprising an exterior wall, characterized in that it also includes: A radiating wall, the radiating wall is close to the indoor side, and a capillary network is laid in the radiating wall; an inner insulation layer, the inner insulation layer is arranged between the outer wall and the radiation wall; A ventilation interlayer, the ventilation interlayer is arranged between the inner insulation layer and the outer wall; A first ventilation channel communicating with the ventilation interlayer is provided below the radiating wall and the inner insulation layer, and a second ventilation channel communicating with the ventilation interlayer is provided above the outer wall , the first ventilation channel and the second ventilation channel are provided with a switch, and the first ventilation channel is provided with a fan near the room. 2. A ventilated heat recovery radiant exterior wall system according to claim 1, characterized in that: the capillary network can circulate air-conditioned hot water or cold water. 3. A ventilated heat recovery radiant exterior wall system according to claim 1 or 2, wherein a paint layer is provided on the side of the radiant wall close to the interior.