CN111895480A - A new type of non-combustible floor heating system - Google Patents

Abstract

The invention relates to a novel non-combustible floor heating system, comprising a temperature controller, a flame retardant insulation layer, a PTC graphene electric heating film, a thermal conductivity flame retardant cement mortar layer and a floor decoration layer, which are arranged on the ground in sequence from bottom to top. There is also a flame retardant cable buried between the layer and the thermally conductive flame retardant cement mortar layer; the PTC graphene electric heating film includes a lower flame retardant insulation thermal conduction layer and an upper flame retardant insulation thermal conduction layer, which are printed on the lower flame retardant insulation thermal conduction layer. There is a PTC graphene heating ink layer, and the two ends of the PTC graphene heating ink layer are respectively provided with conductive sheets; the conductive sheets of the PTC graphene electric heating film are electrically connected to the thermostat through a flame retardant cable, and the thermostat is connected to the mains. Due to the uniform heat conduction of the PTC graphene electric heating film, and the self-limiting temperature characteristics of the PTC graphene electric heating film, it will not continue to heat up and has high safety performance; fire safety hazards.

Description

A new type of non-combustible floor heating system

technical field

The invention relates to the field of floor heating, in particular to a novel non-combustible floor heating system.

Background technique

Floor heating is the abbreviation of ground radiation, which uses the entire ground as a radiator and uniformly heats the entire ground through a heat medium. From the heat medium, it is divided into two categories: water floor heating and electric floor heating. Compared with water floor heating, electric floor heating heats faster (water floor heating requires preheating), and the temperature regulation is more accurate and does not require cleaning (water floor heating generally takes 2-5 years. The floor coil needs to be cleaned once), and electric floor heating is more and more popular.

The common setting method of existing electric floor heating is to lay heating cables (similar to electric heating wires) on the ground, such as the heating cable electric floor heating technology disclosed in the patent application publication number CN102788381A filed on May 19, 2011. The heater consists of a main thermostat, an auxiliary thermostat, a main heating cable and an auxiliary heating cable, of which the main heating cable and the auxiliary heating cable are the heating bodies. The inventor pointed out that the disadvantage of laying heating cables on the ground (main heating cables, auxiliary heating cables) is that the heating cables generate unevenly, especially because the distance between adjacent heating cables is different when the main heating cables and auxiliary heating cables are laid in a circuitous way. , the temperature of the ground is slightly different, specifically including the following situations: (1) The temperature in the place where the heating cables are densely laid is high, and the temperature in the place where the heating cables are sparsely laid is low; (2) The temperature directly above the heating cable is high, and the adjacent heating cables are heated. (3) In another case, there is a thermal insulation material (cloth, sofa, etc.) placed on the ground, and the temperature continues to rise at this position, which has a fire safety hazard. The inventor also pointed out that when users choose electric floor heating, they give priority to the safety performance of floor heating, to be precise, the fireproof performance of electric floor heating.

SUMMARY OF THE INVENTION

Therefore, in view of the above problems, the present invention proposes a new type of non-combustible floor heating system, which eliminates the potential fire safety hazard of floor heating, has high safety performance, and conducts heat evenly for floor heating.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a novel non-combustible floor heating system, comprising a thermostat, a flame retardant insulation layer, a PTC graphene electric heating film, and a thermal conductivity flame retardant cement that are sequentially arranged on the ground from bottom to top. The mortar layer and the ground decoration layer, and a flame-retardant cable is buried between the flame-retardant insulation layer and the thermally conductive flame-retardant cement mortar layer;

The PTC graphene electric heating film comprises a lower flame-retardant insulating heat-conducting layer and an upper flame-retardant insulating heat-conducting layer that are composited with each other, and a PTC graphene heating ink layer is printed on the lower flame-retardant insulating heat-conducting layer, and the PTC graphene generates heat. Both ends of the ink layer are respectively provided with conductive sheets, and the PTC graphene heating ink layer and each conductive sheet are located between the lower flame retardant insulating heat-conducting layer and the upper flame-retardant insulating heat-conducting layer; the lower flame-retardant insulating heat-conducting layer is also provided with There are silver paste current-carrying strips, and the silver paste current-carrying strips are arranged on the PTC graphene heating ink layer; the conductive sheet of the PTC graphene electric heating film is electrically connected with the flame-retardant cable;

The conductive sheet of the PTC graphene electric heating film is electrically connected to a temperature controller through a flame retardant cable, and the temperature controller is connected to the commercial power.

Further, the thickness of the PTC graphene heating ink layer is more than 75 μm.

Further, the upper flame retardant insulating heat-conducting layer and the lower flame-retardant insulating heat-conducting layer are both made of PP film.

Further, a plurality of temperature sensors are evenly spaced between the PTC graphene electric heating film and the thermally conductive flame-retardant cement mortar layer, and each of the temperature sensors is electrically connected to a temperature controller through a flame-retardant cable.

Further, an alarm is also included, and the alarm is electrically connected with the thermostat.

By adopting the aforementioned technical solutions, the beneficial effects of the present invention are: the novel non-combustible floor heating system plays a role of heat preservation and heat insulation by setting a flame retardant insulation layer on the ground, effectively preventing heat from being transferred to the ground from the PTC graphene electric heating film; PTC graphene electric heating The heat conduction is uniform everywhere on the film, and the self-limiting temperature characteristics of the PTC graphene electric heating film, the PTC graphene electric heating film heats up to a certain temperature T (for example, 50 ° C), the PTC graphene electric heating film presents high resistance characteristics, reducing the current, thereby reducing the The heating efficiency will decrease with the temperature, and the temperature will not continue to rise, so as to eliminate the potential fire safety hazard of floor heating, with high safety performance; silver paste current-carrying strips are set on the PTC graphene electric heating film to avoid the virtual connection of the PTC graphene heating ink layer, which may lead to ignition ,breakdown. The thermally conductive flame-retardant cement mortar layer can quickly transfer the heat of the PTC graphene electric heating film to the ground decoration layer. In addition, the flame-retardant properties of the thermal insulation layer and the thermally conductive flame-retardant cement mortar layer can eliminate the hidden danger of floor heating fire and have high safety performance. Further, because placing objects on the ground is not conducive to heat dissipation, resulting in an abnormal increase in the local temperature on the ground, or due to the burning of objects on the ground, causing an abnormal increase in the local temperature on the ground, etc., the PTC graphene electric heating film will not work normally and stably. Therefore, There are also multiple temperature sensors between the PTC graphene electric heating film and the thermally conductive flame-retardant cement mortar layer. Each temperature sensor detects the real-time temperature of the PTC graphene electric heating film and transmits it to the thermostat. If the deviation of the value is large, the thermostat controls the PTC graphene electric heating film to stop heating, which further improves the safety and eliminates the hidden danger of floor heating fire.

Description of drawings

1 is a schematic cross-sectional structure diagram of a novel non-combustible floor heating system laid on the ground according to an embodiment of the present invention;

Fig. 2 is the exploded exploded view of the PTC graphene electric heating film of the embodiment of the present invention;

FIG. 3 is a circuit connection block diagram of an embodiment of the present invention.

Detailed ways

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

1, 2 and 3, the present embodiment provides a novel non-combustible floor heating system, including a thermostat 6, a plurality of temperature sensors 5 (only four temperature sensors 5 are shown in FIG. 1), an alarm 8, And the flame retardant insulation layer 1, the PTC graphene electric heating film 2, the thermal conductivity flame retardant cement mortar layer 3 and the ground decoration layer 4, which are sequentially arranged on the ground from bottom to top, the flame retardant insulation layer 1 and the thermal conductivity flame retardant cement Flame-retardant cables 7 are also embedded between the mortar layers 3 , and the temperature sensors 5 are evenly and equally spaced between the PTC graphene electric heating film 2 and the thermally conductive flame-retardant cement mortar layer 3 . In this specific embodiment, the flame retardant insulation layer 1 is preferably a grade A fireproof cement insulation board, the thermal conductivity flame retardant cement mortar layer 3 is made of high thermal conductivity cement, and the floor decoration layer 4 is a ceramic tile. The temperature controller 6 adopts a remote control frequency conversion temperature controller, and the temperature controller 6, the temperature sensor 5 and the alarm 8 are all existing electronic equipment. The thermostat 6 can detect the indoor temperature.

As shown in FIG. 2 , the PTC graphene electric heating film 2 includes a lower flame-retardant insulating heat-conducting layer 21 and an upper flame-retardant insulating heat-conducting layer 26 that are composited with each other. In this specific embodiment, preferably, the upper flame-retardant insulating heat-conducting layer is 26 and the lower flame-retardant, insulating, heat-conducting layer 21 are both made of food-grade PP film (polypropylene film), and the PP film has excellent electrical insulation properties. The PTC graphene heating ink layer 23 is printed on the lower flame retardant insulating heat conduction layer 21, and the two ends of the PTC graphene heating ink layer 23 are respectively provided with a conductive sheet 24 and a conductive sheet 25, and the PTC graphene generates heat. The ink layer 23 is provided with a silver paste current-carrying strip 22, and the PTC graphene heating ink layer 23, the silver paste current-carrying strip 22, the conductive sheet 24 and the conductive sheet 25 are all located in the lower flame retardant insulating thermal conduction layer 21 and the upper flame retardant. between the insulating and thermally conductive layers 26 . Arranging the silver paste current-carrying strips 22 on the PTC graphene electric heating film 2 can effectively avoid the virtual connection of the PTC graphene heating ink layer, resulting in ignition and breakdown. The thickness of the PTC graphene heating ink layer 23 is above 75 μm. The conductive sheet 24 and the conductive sheet 25 of each of the temperature sensors 5 and the PTC graphene electric heating film 2 are electrically connected to the temperature controller 6 through the flame retardant cable 7, and the alarm device 8 is electrically connected to the temperature controller 6. The device 6 is connected to the commercial power. The user sets the indoor temperature value X°C (for example, 28°C) through the thermostat 6, and the thermostat 6 controls the PTC graphene electric heating film 2 to generate heat to maintain the indoor temperature at X°C.

Due to the self-limiting temperature characteristic of the PTC graphene electric heating film 2, the safety performance is high, and the heat conduction is uniform. Specifically, when the PTC graphene electric heating film 2 generates heat exceeding a certain temperature T (for example, 50° C.), the PTC graphene electric heating film 2 exhibits high resistance characteristics, reduces the current, thereby reducing the heating efficiency, and the temperature decreases accordingly, and does not continue to heat up. At the same time, the flame-retardant thermal insulation layer 1 and the thermally conductive flame-retardant cement mortar layer 3 have flame-retardant properties themselves, so as to eliminate the potential safety hazard of floor heating fire.

In addition, considering that in the actual use process, placing items on the ground is not conducive to heat dissipation, resulting in an abnormal increase in the local temperature of the ground, or due to the burning of items on the ground (such as burning paper money during worship, etc.), resulting in an abnormal increase in the local temperature of the ground, etc. The reason is that the PTC graphene electric heating film 2 cannot work normally and stably. Therefore, multiple temperature sensors 5 are set between the PTC graphene electric heating film 2 and the thermally conductive flame-retardant cement mortar layer 3, and each temperature sensor 5 detects the PTC graphene electric heating. The real-time temperature generated by the film 2 is transmitted to the thermostat 6. Once the temperature value detected by each temperature sensor 5 has a large deviation, for example, the temperature value deviation between the temperature sensor and other temperature sensors exceeds 20 degrees Celsius, the thermostat 6 Control the PTC graphene electric heating film 2 to stop heating, and the alarm 8 sends out an alarm to remind the user to check the power failure, further improve the safety, and eliminate the hidden danger of floor heating fire.

Although the present invention has been particularly shown and described in connection with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Various changes are made within the protection scope of the present invention.

Claims (5)

1. a novel non-combustible floor heating system is characterized in that: comprising a thermostat and the flame retardant insulation layer, PTC graphene electric heating film, thermal conductivity flame retardant cement mortar layer and ground decoration layer that are arranged on the ground in turn from bottom to top, A flame retardant cable is also buried between the flame retardant insulation layer and the thermal conductivity flame retardant cement mortar layer; The PTC graphene electric heating film comprises a lower flame-retardant insulating heat-conducting layer and an upper flame-retardant insulating heat-conducting layer that are composited with each other, and a PTC graphene heating ink layer is printed on the lower flame-retardant insulating heat-conducting layer, and the PTC graphene generates heat. Both ends of the ink layer are respectively provided with conductive sheets, and the PTC graphene heating ink layer and each conductive sheet are located between the lower flame retardant insulating heat-conducting layer and the upper flame-retardant insulating heat-conducting layer; the lower flame-retardant insulating heat-conducting layer is also provided with There are silver paste current-carrying strips, and the silver paste current-carrying strips are arranged on the PTC graphene heating ink layer; the conductive sheet of the PTC graphene electric heating film is electrically connected with the flame-retardant cable; The conductive sheet of the PTC graphene electric heating film is electrically connected to a temperature controller through a flame retardant cable, and the temperature controller is connected to the commercial power. 2 . A novel non-combustible floor heating system according to claim 1 , wherein the thickness of the PTC graphene heating ink layer is more than 75 μm. 3 . 3. A new type of non-combustible floor heating system according to claim 2, characterized in that: the upper flame-retardant insulating heat-conducting layer and the lower flame-retardant insulating heat-conducting layer are both made of PP film. 4. a kind of novel non-combustible floor heating system according to claim 1 or 2 or 3, is characterized in that: also be provided with a plurality of temperature sensors at even intervals between the described PTC graphene electric heating film and the thermal conductivity fire-retardant cement mortar layer , each of the temperature sensors is electrically connected to the temperature controller through a flame-retardant cable. 5. A new type of non-combustible floor heating system according to claim 4, characterized in that it further comprises an alarm which is electrically connected to the thermostat.

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