CN201228427Y - Dry-type hot-water heating floor - Google Patents

Abstract

A dry hot water heating floor belongs to the technical field of floor radiation heating. The heating floor includes a ground decoration layer, an upper metal heat conducting film, a heating pipe, a lower metal heat conducting film, a thermal insulation layer, a wooden keel and a floor (or a ground surface). The heating pipe is laid in the pipe groove of the insulation material, and the upper and lower sides of the heating pipe are respectively provided with metal heat conduction films extending to the surroundings, which expands the heating surface of the heating pipe, makes the floor surface temperature uniform, and reduces the downward heat loss. There is no hollow volume between the keels, and the structure is relatively dense, which improves the thermomechanical performance. The diameter of the heating pipe is smaller than that of the conventional wet floor heating pipe, and larger than that of the integrated dry floor heating pipe, which reduces the thickness of the structural layer and the load on the floor, lowers the requirements for water quality, and the system resistance is small, reducing the need for circulating water pumps. energy consumption. The floor structure can be prefabricated, partially prefabricated or assembled and laid on site. The construction is simple and the maintenance is convenient. It is suitable for heating both new buildings and existing buildings.

Description

A dry hot water heating floor

technical field

The utility model relates to a structure of a dry-type hot water heating floor used for building heating, in particular to a double-layer metal heat-conducting film laid on the upper and lower sides of the heating pipe to increase the heat dissipation of the floor and improve the uniformity of the floor temperature, which is easy to install and maintain. 1. The hot water heating floor structure with small floor load belongs to the technical field of floor radiant heating, and is suitable for both new building heating and existing building heating.

Background technique

Low-temperature hot water ground radiation heating uses hot water with a temperature not higher than 60°C as the heat medium, circulates in the heating pipe, heats the floor, and dissipates heat to the room through the ground through radiation heat exchange and convection heat exchange. Compared with the traditional convection heating method, the low-temperature hot water ground radiation heating has high comfort, saves energy, and can utilize low-grade heat energy. At the same time, it is conducive to the implementation of household heat metering and convenient building decoration; it is also conducive to sound insulation of floors. The floor heating method can better adapt to the needs of the development of modern comfortable and energy-saving building technology. It is a comfortable and energy-saving heating method with broad development and application prospects.

Conventional low-temperature hot water ground radiation heating can be divided into wet type and dry type according to its floor structure. The wet floor refers to burying the heating pipe in the fine stone concrete on the ground insulation layer, and then making a leveling layer and a decorative layer on it. The thickness of the wet floor structure is large and the load is heavy. Floor heating usually needs to occupy a space height of at least 80mm, increasing the ground load by about 120kg/m ² . At the same time, the wet floor has a large amount of construction, is not easy to overhaul, and the temperature stress can easily cause cracks and deformation of the floor structure layer; the conventional dry floor directly exposes the heating pipe to the structure layer, and directly lays the floor and other decorative layers on it, which is better than the wet type hot water. Floor heating is easy to overhaul. However, there are a large number of hollows in the conventional dry-type structural layer, poor mechanical properties, thick structural layer, high cost, and small heat dissipation per unit area; the integrated dry-type floor directly embeds the heating tubes in the insulation material, and the distance between the heating tubes is the same as that of the thermal insulation material. The diameter of the pipe is fixed, and the upper surface is pasted and covered with aluminum foil to make an integrated finished product. According to the room area and heat load, the size of the heating pad area is determined, and it is assembled and assembled directly on the flat floor according to the needs. However, the diameter of the heating pipe is small, the water quality requirement is high, and the pipe is easy to be blocked; the system resistance is large and the energy consumption is large; the aluminum foil layer is placed on the heating pipe, so that the proportion of heat transfer from the floor to the floor is large, and the heat dissipation per unit floor area of the heating room is small. , It is not suitable for buildings with poor thermal insulation of the envelope structure and larger units. Although floor heating technology has the advantages of energy saving and comfort, there are still many deficiencies in technology and construction technology, which need to be improved. Therefore, how to optimize the panel structure and design method is the technical key to the vigorous development and promotion of floor heating technology in our country.

Utility model content

The purpose of this utility model is to provide a dry hot water heating floor, which overcomes many shortcomings in conventional floor heating, can effectively reduce the thickness of the floor structure layer, reduce the floor load, facilitate installation and maintenance, and avoid the Internal cracks deform, improve mechanical properties and thermal properties, and reduce initial investment and operating costs of the system.

The technical scheme of the utility model is as follows:

A dry-type hot water heating floor, comprising a ground decoration layer 1, a metal heat-conducting film, a heating pipe 3, an insulation layer 5 and a wooden keel 6, and pipe grooves are arranged in the insulation layer according to the pipe spacing, and it is characterized in that: the metal heat-conducting The film is composed of the upper metal heat-conducting film 2 and the lower metal heat-conducting film 4. The lower metal heat-conducting film is laid close to the body along the insulation layer and the surface of the pipe groove. The heating pipe is embedded on the lower metal heat-conducting film in the pipe groove of the insulation layer; It is laid on the heating pipe and the lower metal heat-conducting film, and is in close contact with the top of the pipe, the lower metal heat-conducting film and the wooden keel.

The lower part of the section of the pipe groove described in the utility model is semicircular, the middle and upper part is rectangular, the depth of the pipe groove is equal to the outer diameter of the pipe, and the top of the heating pipe is on the same plane as the upper surface of the lower metal heat-conducting film.

The metal heat-conducting film described in the utility model adopts a metal film or thin plate with corrosion resistance and strong thermal conductivity, and the metal film or thin plate preferably adopts aluminum foil or tin foil. Both the thickness of the upper metal heat conduction film and the lower metal heat conduction film are 0.1 mm to 0.6 mm.

The heating pipe described in the utility model uses cross-linked aluminum-plastic composite pipe (XPAP), polybutene pipe (PB), polyethylene pipe (PE), cross-linked polyethylene pipe (PE-X), random copolymerization Propylene pipe (PP-R) or heat-resistant reinforced polyethylene pipe (PE-RT), the outer diameter of the heating pipe is 12mm to 20mm, and the distance between the pipes is 150mm to 300mm. The wooden keels are of the same thickness as the insulation layer and have no hollow volume; the wooden keels are arranged parallel to the pipe length or perpendicular to the pipe length.

In the utility model, the thickness of the thermal insulation layer is 25 mm to 45 mm, and the thickness of the thermal insulation layer at the lower part of the heating tube should be thickened with the increase of the diameter of the heating tube.

In the utility model, a waterproof layer can be set on the upper metal heat-conducting film and under the ground decoration layer to the ground (such as toilet) that needs waterproofing; a moisture-proof layer can be established under the heat-preservation layer to the moisture-proof site (ground attached to the ground).

Compared with the prior art, the utility model has the following advantages and outstanding effects: ① The utility model covers the heating tube with two layers of metal heat-conducting film, which increases the contact area between the heat-conducting film and the heating tube and reduces the hollow volume , greatly improving the thermal conductivity, increasing the heat transfer to the ground and the room, reducing the heat transfer to the lower floor, and significantly improving the heat dissipation per unit floor area and the uniformity of the floor surface temperature distribution. ②The temperature distribution on the lower surface of the insulation layer and the lower surface of the floor slab is uniform, the temperature change is small, and the temperature of the floor slab is close to room temperature, which is conducive to reducing the overall thickness of the cushion. Excluding the floor slab and ground decoration layer, the thickness is about 25-45mm. ③The heating pipe is laid in the insulation layer, and the upper metal heat conduction film directly covers the ground decoration layer. There is no hollow part between the keels, the structure is relatively dense, and the mechanical properties are good, which improves the load-bearing capacity of the floor. ④ The diameter of the heating pipe in the hot water heating floor can be selected from 12 to 20 mm, which can reduce the thickness of the structural layer to a certain extent, and at the same time, the water quality is not high, and it is not easy to cause blockage of the system pipeline, which reduces the system resistance. Reduced energy consumption. ⑤Insulation layer, heating pipe, metal heat-conducting film, and wooden keel can be prefabricated, partly prefabricated, or directly paved as a whole structure on site, which is easy to transport, easy to construct, easy to operate, and easy to maintain.

Description of drawings

Fig. 1 is a structural schematic diagram of the dry hot water heating floor provided by the utility model.

Fig. 2 is an exploded schematic diagram of each structural layer of the dry hot water heating floor provided by the utility model.

1. Ground decoration layer; 2. Upper metal heat-conducting film; 3. Heating pipe; 4. Lower metal heat-conducting film; 5. Insulation layer; 6. Wooden keel;

Detailed ways

Below in conjunction with accompanying drawing, specific structure and implementation of the present utility model will be further described.

Fig. 1 is the structural representation of the dry-type hot water heating floor provided by the utility model, and this floor comprises ground decoration layer 1, metal heat-conducting film, heating pipe 3, insulation layer 5 and wooden keel 6; The metal heat-conducting film is composed of the upper metal heat-conducting film 2 and the lower metal heat-conducting film 4. The lower metal heat-conducting film is laid close to the skin along the insulation layer and the surface of the pipe groove. On the membrane; the upper metal heat-conducting film is laid horizontally on the heating tube and the lower metal heat-conducting film, and is in close contact with the top of the pipe, the lower metal heat-conducting film and the wooden keel. The lower part of the section of the pipe groove is semicircular, the middle and upper part is rectangular, the depth of the pipe groove is equal to the outer diameter of the pipe, and the top of the heating pipe is on the same plane as the upper surface of the lower metal heat-conducting film.

Since the thermal conductivity of the wall of the plastic heating pipe is small, the method of covering the metal heat-conducting film can increase the thermal conductivity. The laying position of the thermal film has a great influence on the heat transfer process in the floor. If the heat conduction film is only laid horizontally on the upper part of the heating pipe, the downward heat transfer is greater; if the heat conduction film is only laid on the lower part of the heating pipe, although the downward heat transfer is reduced, the uniformity of the temperature distribution on the floor surface is poor , and the utility model lays the heat conduction film on the upper and lower sides of the heating tube at the same time, which reduces the downward heat transfer, improves the uniformity of the temperature distribution, and greatly improves the heat dissipation per unit floor area.

The heating pipe 3 laid in the insulation layer in Figure 1 can use cross-linked aluminum-plastic composite pipe (XPAP), polybutylene pipe (PB), polyethylene pipe (PE), cross-linked polyethylene pipe (PE-X) , Random copolymer polypropylene pipe (PP-R) or heat-resistant reinforced polyethylene pipe (PE-RT), the outer diameter can be selected from 12mm to 20mm, which is smaller than the wet floor pipe diameter and larger than the integrated dry floor pipe diameter. That is to say, the thickness of the structural layer can be reduced to a certain extent, and at the same time, the requirements for water quality are not high, and it is not easy to cause blockage of the system pipeline, which reduces the system resistance and energy consumption.

The upper metal heat-conducting film 2 and the lower metal heat-conducting film 4 can be made of corrosion-resistant and strong heat-conducting metal film or thin plate, preferably aluminum foil or tin foil; the thickness of the metal film can be selected from 0.1 to 0.6mm. The greater the thickness, the better the heat transfer performance and the uniformity of the floor temperature distribution.

Fig. 2 is the decomposition schematic diagram of each structural layer of dry hot water heating floor provided by the utility model, and this floor is made up of ground decoration layer 1, metal heat conduction film, heating pipe 3, insulation layer 5 and wooden keel 6, and these components can be All assembled and prefabricated, paved on site; or partially prefabricated, partially assembled on site, paved; or all assembled and paved on site. The insulation material is reserved with pipe grooves for laying heating pipes, and the depth of the pipe grooves is equal to the outer diameter of the pipes. The thickness of the insulation layer is 25-45mm, and the thickness of the insulation layer is related to the selected pipe diameter. The thickness of the insulation layer increases as the diameter of the heating pipe increases. The thickness of the insulation layer at the lower part of the heating tube increases with the increase of the diameter of the heating tube. The floor (or the ground) 7 and the ground decoration layer are supported by wooden keels 6 arranged in parallel. An insulation layer and heating pipes are laid between the wooden keels on the floor. The wooden keels are in close contact with the insulation layer. Two columns are laid between the two wooden keels. Parallel heating tubes. A wooden keel perpendicular to the heating pipe can be added as needed. Before the heating pipe is laid, the lower metal heat conducting film 4 is laid on the insulation layer, and after compaction, the heating pipe 3 is laid, and then the upper metal heat conducting film 2 is laid, and the ground decoration layer 1 is directly laid on the upper metal heat conducting film. Both layers of metal heat conduction film are on the wooden keel. The distance between the heating tubes can be selected from 150mm to 300mm.

For the ground that needs to be waterproofed (such as the bathroom), a waterproof layer can be set on the upper metal heat-conducting film and under the ground decoration layer; for moisture-proof places (ground close to the ground), a moisture-proof layer can be set under the insulation layer.

In order to further understand the present description through several specific examples below.

Example 1:

The floor structure is 110mm from bottom to top, the insulation layer is 25mm, the heating pipe is polybutene (PB) pipe, the outer diameter of the heating pipe is 12mm, the upper and lower heat conduction films are made of aluminum foil, the thickness is 0.1mm, and the wooden floor is 9mm. The heating tube spacing is 150mm. When the indoor design temperature is 18°C and the average temperature of hot water in the heating pipe is 45°C, the average floor surface temperature is 27.9°C, the maximum temperature difference of the floor surface is 3.7°C, and the heat dissipation per unit floor area is 63W/m ² .

Example 2:

The floor structure is 110mm from bottom to top, the insulation layer is 25mm, the heating pipe is polybutene (PB) pipe, the outer diameter of the heating pipe is 12mm, the thickness of the upper and lower heat conducting films is 0.2mm, and the wooden floor is 9mm. The heating tube spacing is 200mm. When the indoor design temperature is 20°C and the average temperature of hot water in the heating pipe is 50°C, the average floor surface temperature is 25.6°C, the maximum temperature difference on the floor surface is 2.6°C, and the heat dissipation per unit floor area is 59W/m ² .

Example 3

The floor structure is 110mm from bottom to top, the insulation layer is 40mm, the heating pipe is polybutene (PB) pipe, the outer diameter of the heating pipe is 20mm, the thickness of the upper and lower heat conduction films is 0.6mm, and the wooden floor is 9mm. The heating tube spacing is 200mm. When the indoor design temperature is 22°C and the average temperature of hot water in the heating pipe is 35°C, the average floor surface temperature is 26.2°C, the maximum temperature difference on the floor surface is 0.8°C, and the heat dissipation per unit floor area is 65W/m ² .

Claims (9)

1. A dry hot water heating floor, including a floor decoration layer (1), a metal heat-conducting film, a heating pipe (3), an insulation layer (5) and a wooden keel (6), and pipe grooves are arranged in the insulation layer according to the pipe spacing, It is characterized in that: the metal heat-conducting film is composed of an upper metal heat-conducting film (2) and a lower metal heat-conducting film (4), the lower metal heat-conducting film is laid close to the body along the insulation layer and the upper surface of the pipe groove, and the heating tube is embedded in the insulation layer tube The lower metal heat-conducting film in the tank; the upper metal heat-conducting film is laid horizontally on the heating tube and the lower metal heat-conducting film, and is in close contact with the heating tube top, the lower metal heat-conducting film and the wooden keel. 2. A dry hot water heating floor according to claim 1, characterized in that: the lower part of the cross-section of the pipe groove is semicircular, the middle and upper part is rectangular, the depth of the pipe groove is equal to the outer diameter of the pipe, and the top of the pipe is in line with the outer diameter of the pipe. The upper surface of the lower metal heat conduction film is in the same plane. 3. A dry-type hot water heating floor according to claim 1 or 2, characterized in that: both the upper metal heat-conducting film and the lower metal heat-conducting film are made of metal films or thin plates with corrosion resistance and strong thermal conductivity. 4. A dry hot water heating floor according to claim 3, characterized in that: said metal film or sheet is made of aluminum foil or tin foil. 5. A dry-type hot water heating floor according to claim 1, characterized in that the thickness of the upper metal heat-conducting film and the lower metal heat-conducting film are both 0.1mm-0.6mm. 6. A dry hot water heating floor according to claim 1, characterized in that: the heating pipe is made of cross-linked aluminum-plastic composite pipe, polybutene pipe, polyethylene pipe, cross-linked polyethylene pipe, random Copolymerized polypropylene tube or heat-resistant reinforced polyethylene tube, the outer diameter of the heating tube is 12mm-20mm, and the tube spacing is 150mm-300mm. 7. A dry-type hot water heating floor according to claim 1, characterized in that: the wooden keel has the same thickness as the insulation layer and has no hollow volume; the wooden keel is parallel to or perpendicular to the length of the pipe Arranged in parallel. 8. A dry hot water heating floor according to claim 1, further characterized in that: the thickness of the insulation layer is 25-45 mm, and the thickness of the insulation layer at the lower part of the heating pipe increases as the diameter of the heating pipe increases. 9. A dry hot water heating floor according to claim 1, further characterized in that: for the ground that needs to be waterproofed, a waterproof layer is provided on the upper metal heat-conducting film and under the ground decoration layer; Fortify the moisture layer.

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